GB/T 5657-1995 Technical requirements for centrifugal pumps (Class III)
Some standard content:
National Standard of the People's Republic of China
Technical specifications for centrifugal pumps--Class I
This standard is equivalent to the international standard ISO9908-1993 "Technical specifications for centrifugal pumps--Class I". GB/T5657--1995
GB5657---85
Replaces GB5658--85
GB565985
There are three technical specifications for centrifugal pumps, which are divided into Class I, Class I and Class II. Class I has the most stringent requirements, while Class I has the loosest requirements. Any content that may need to be decided by the buyer or agreed upon by the buyer and the manufacturer is printed in bold and listed in Appendix F (reference).
1 Subject content and scope of application
1.1 This standard specifies the class requirements for the design, manufacture, factory inspection and testing, and shipment of centrifugal pumps. and covers design features relating to the installation, maintenance and safety of the pump (including the base, couplings and auxiliary piping, excluding the driver if it is not integral with the pump).
1.2 This standard applies to centrifugal pumps of single-stage, multi-stage, horizontal or vertical construction (coupled or coaxial) for general applications with any type of drive and mounting.
1.3 Where the application of this standard has been requested: a. Where a special design feature is required, alternative designs may be proposed that meet the intent of this standard, provided they are described in detail;
b. Pumps that do not fully comply with the requirements of this standard may be proposed for consideration, provided that all differences are described. 1.4 Whenever conflicting technical requirements are contained in more than one document, the applicability of the documents shall be determined in the following order: Purchase order or enquiry (if no order has been issued) see Appendix B (reference document) : Data sheet L see Appendix A (reference document);
c. This standard;
d. Other standards mentioned in the order or inquiry, 2 Reference standards
GB3216 Test methods for centrifugal pumps, mixed flow pumps, axial flow pumps and rotary pumps GB4216 Dimensions of grey cast iron pipe flanges
GB/T4662 Rated static load of rolling bearings
Cavity dimensions for axial suction centrifugal pumps and soft packing GB5661
Basis for the formulation of machine vibration standards
GB6075
GB6391
Calculation method for rated dynamic load and rated life of rolling bearings GB6556 Types, main dimensions, materials and identification marks of mechanical seals GB6558 Assessment criteria for flexible rotor balance Steel pipe flanges
GB 9113
Determination of the allowable imbalance of rigid rotor balance quality GB9239
Approved by the State Technical Supervision Commission on July 14, 1995 and implemented on March 1, 1996
GB/T 5657-1995
GB10889 Measurement and evaluation method for pump vibration GB10890 Measurement and evaluation method for pump noise 3 Definitions
The definitions of terms that need to be explained in this standard are as follows: 3.1 Working conditions
Various parameters (such as working temperature and working pressure) determined by the given application and the pumped liquid. These parameters will affect the structural type and structural materials.
3.2 Allowable operating range
The flow range allowed by the pump equipped with the supplied impeller under the specified working conditions. This range is limited by cavitation, heat, vibration, noise, axiality and other similar conditions, and it must be determined by the manufacturer. The upper and lower limits of the operating range are expressed in terms of maximum and minimum continuous flow rates. 3.3 Rated conditions
All conditions (except the driver conditions) at the guaranteed operating point. This operating point must meet all specified operating conditions and take into account the necessary margins.
3.4 Driver rated output power
The maximum permissible output power of the driver under field operating conditions. 3.5 Basic design pressure
The pressure derived from the allowable stress of the material used for pressure-bearing parts at 20°C. 3.6 Rated pressure
The ultimate pressure under the worst operating conditions for a given application. 3.7 Rated inlet pressure
The inlet pressure as the working condition of the guaranteed point. 3.8 Rated outlet pressure
The pump outlet pressure at the guaranteed point under the conditions of rated flow, rated speed, rated inlet pressure and density. 3.9 Pressure-temperature rating
The relationship between pressure and temperature given in the form of a curve (see Figure 1). Basic design pressure
Working pressure
TWorking temperature
Figure 1 Pressure-excitation rating
3.10 Maximum permissible continuous speed
The maximum speed allowed by the manufacturer for continuous operation. 3.11 Shutdown speed
GB/T 5657--1995
The speed at which the independent overspeed emergency device is actuated to shut down the prime mover. Note: For steam turbines and reciprocating engines, this speed should be at least 110% of the maximum continuous speed. For gas turbines, this speed should be at least 105% of the maximum continuous speed.
3.12 First critical speed
The speed at which the lowest lateral natural vibration frequency of the rotating parts coincides with the rotational frequency. 3.13 Design radial load
The maximum hydraulic radial force to which the largest impeller (diameter and width) is subjected when operating within the specified range of its maximum speed performance curve under the conditions of design liquid density (usually 1000kg/m). 3.14 Maximum radial load
The maximum hydraulic radial force to which the largest impeller (diameter and width) is subjected when operating at any point on its maximum speed performance curve under the conditions of maximum liquid density.
3.15 Shaft radial runout
The total radial deviation indicated by an instrument measuring the position of the shaft relative to the bearing housing when the shaft supported in the bearing is turned by hand with the shaft in a horizontal position.
3.16 Face runout
The total axial deviation indicated by an instrument attached to the shaft and rotating with it at the radial plane outside the stuffing box when the shaft supported in the bearing in a horizontal position is turned by hand. This radial plane is the plane that determines the centering of the sealing components. 3.17 Shaft deflection
The displacement of the shaft from its geometric center due to the hydraulic radial force acting on the impeller. It does not include shaft displacement caused by the tilt of the shaft within the bearing clearance range. It also does not include shaft curvature caused by impeller imbalance or radial runout of the shaft. 3.18 Circulation (flushing)
The return flow of pumped liquid from the high-pressure area to the seal chamber can be in the form of an external pipeline or an internal channel. This return flow is used to remove the heat generated at the seal or to maintain a positive pressure in the seal chamber. It is treated to improve the working environment of the seal. In some cases, the best method may be a circulation method from the seal chamber to the low-pressure area (such as the inlet). 3.19 Injection (flushing)
Introducing a suitable (clean, compatible, etc.) liquid from an external liquid source into the seal chamber and then into the pumped liquid. 3.20 Barrier fluid
A suitable (clean, compatible, etc.) fluid is introduced continuously or intermittently on the atmospheric side of the main shaft seal to remove air or moisture, prevent or remove deposits (including ice), lubricate auxiliary seals, extinguish sparks, dilute, heat or cool leaking liquid. 3.21 Barrier fluid (isolation fluid)
A suitable (clean, compatible, etc.) liquid introduced between two seals (mechanical seals and/or soft packing). The pressure of the barrier fluid depends on the configuration of the seals. Barrier fluid can be used to prevent air from entering the pump. Usually barrier liquids are easier to seal than pumped liquids and/or are less harmful when condensed.
4 Design
4.1 General
4.1.1 Characteristic curve
The characteristic curve should show the allowable operating range of the pump. 4.1.2 Net Positive Suction Head (NPSH)
NPSHR shall be determined based on the cold water (normal temperature clean water) specified in GB3216. NPSHA must be larger than NPSHR by a margin of at least 0.5m.
4.1.3 Installation
GB/T 5657-1995
The pump is preferably suitable for outdoor installation under normal environmental conditions. If the pump is only suitable for indoor installation, this should be clearly stated in the manufacturer's documents.
The buyer shall specify the environmental conditions for outdoor installation. 4.2 Prime mover
Operating conditions determined by the opponent:
The ratio of the rated output power of the prime mover suitable as the driver of the coupling-connected pump to the rated shaft power of the pump (in the range of 1-100 kW) shall be at least equal to the percentage given in Figure 2. For pump shaft powers outside this range, the percentage shall be determined by negotiation between the manufacturer and the purchaser. If the rated output power of the prime mover meets the power requirements of the installed impeller of a given diameter under any operating condition, no additional margin is required.
Shaft power recorded under rated conditions, kW
Figure 2 Output power of the prime mover expressed as a percentage of the pump shaft power under rated conditions For uncertain operating conditions:
The rated output power of the prime mover as the driver of the coaxial pump must meet the power requirements of the installed impeller of a given diameter under any operating condition. No additional margin is required in these cases. 4.3 Critical speed, balance and vibration
4.3.1 Critical speed
Under operating conditions, the actual first lateral critical speed of the rotor when connected to the agreed driver shall exceed the maximum permissible continuous speed including the turbine driven pump's auto-stop speed by at least 10%. For vertical pumps, a flexible shaft is permitted. 4.3.2 Balance and vibration
4.3.2.1 Horizontal pumps
When measured on the manufacturer's test equipment, the unfiltered vibration values shall not exceed the vibration severity limits given in Table 1. These values are measured radially at the bearing housing at rated speed (±5%) and rated flow (±5%) when the pump is running without cavitation. For reference, balancing according to GB9239 G6.3 grade will usually meet the requirements of Table 1. For pumps with special impellers, such as single-channel impeller pumps, the vibration values may exceed the limits given in Table 1. In this case, the manufacturer should indicate this in the supply.
1800225
For vertical pumps with rigid couplings, the vibration readings shall be taken at the top flange of the drive base. For vertical pumps with flexible couplingsa.
, the vibration readings shall be taken near the upper bearing of the pump. During factory testing, the vibration limit (RMS velocity value) of rolling bearings and sliding bearingsb
bearing pumps shall not exceed 7.1mm/s at rated speed (±5%) and rated flow (±5%) and without cavitation. The balance of flexible rotors can refer to GB6558.4.4 Pressure-bearing parts
4.4.1 Pressure-temperature ratings
The manufacturer shall clearly specify the ultimate pressure (maximum allowable working pressure) of the pump under the worst working conditions. The rated pressure of the pump (pump body and pump cover, including shaft seal box and packing gland/sealing end cover) shall not exceed the nominal pressure of the pump flange. Pressure.
When the pump is made of cast iron, ductile iron, carbon steel or stainless steel, the basic design pressure at 20°C shall be at least 0.6 MPa. For materials where the tensile strength requirements do not allow the rated value of 0.6 MPa to be achieved, the manufacturer shall adjust the pressure-temperature rating according to the stress-temperature rating of the material and clearly state it. If the manufacturer makes clear provisions on the nameplate and data sheet, low-head pumps may have lower pressure-temperature ratings. 4.4.2 Wall thickness
The pressure shell, including the shaft seal box, packing gland and sealing end cover, shall have an appropriate thickness to withstand the maximum allowable working pressure and limit deformation at the operating temperature.
The pump body shall also be suitable for the hydrostatic test pressure at ambient temperature (see Chapter 6). 4.4.3 Materials
The materials used for pressure-containing parts shall be determined according to the pumped liquid and the purpose of the pump (see Chapter 5). 4.4.4 Mechanical properties
4.4.4.1 Disassembly
The pump shall be designed so that the disassembly necessary for the replacement of spare parts can be carried out without moving the suction and discharge connections. If the construction is not so, i.e. disassembly involves some movement, this shall be stated. 4.4.4.2 Pump gaskets
The design of the pump gaskets shall be suitable for the hydrostatic test conditions at rated working conditions and ambient temperature. 4.4.4.3 External bolted connections
The bolts or studs connecting the pressure-containing parts shall be selected to suit the maximum allowable working pressure and the normal tightening method. 4.5 Short pipes (nozzles) and other connections
Note: For the purpose of this standard, short pipes and nozzles are synonymous. 4.5.1 Types and sizes
The types and sizes of various fluid connections shall be stated in the manufacturer's documentation. 4.5.2 Sealing parts
GB/T 56571995
The vent hole, pressure measuring hole and drain hole should be equipped with a sealing part that can withstand the maximum allowable working pressure and can be removed. The material of the sealing part should be suitable for the pumped liquid.
4.6 External forces and external moments on the short pipe (inlet and outlet) Upon request, the manufacturer should provide detailed data on the allowable external forces and external moments acting on the short pipe. 4.7 Short pipe (pipe mouth) flange
If a circular flange is used, the outer diameter of the flange should comply with the flange of GB4216 or GB9113 standards. If the manufacturer's standard form requires the flange thickness and diameter to be larger than the corresponding size of the specified grade, it shall be requested by the manufacturer. Heavier flanges can also be provided, but the planes and holes shall be processed in accordance with the above standards. The bolt holes shall be arranged across the center line.
4.8 Impeller
4.8.1 Impeller design
Depending on the application, closed, semi-open or open impeller designs may be selected. 4.8.2 Impeller fixing
The impeller shall be fixed to prevent circumferential and axial movement when it rotates in the specified direction. For coaxial pumps, it shall also be noted that the impeller shall be reliably fixed in either direction of rotation. 4.9 Running clearance
When determining the running clearance between stationary and rotating parts, the operating conditions and the properties of the materials used for these parts (such as hardness and abrasion resistance) shall be taken into account. The size of the clearance shall be such as to prevent contact under operating conditions. The material combination shall be selected to minimize the risk of wear and seizure.
4.10 Shaft and bushing
4.10.1 General
The shaft shall be of sufficient size and rigidity to:
Transmit the rated power of the prime mover:
Minimize the poor working condition of the packing and seal; c
Minimize the risk of wear and seizure; d. Give due consideration to the starting method and related inertia loads. 4.10.2 Surface roughness
The surface roughness of the stuffing box sealing area should be suitable for the requirements that both the mechanism seal and the packing seal can work satisfactorily. 4.10.3 Shaft deflection
The calculated deflection of the shaft at the radial plane passing through the outer end of the stuffing box caused by the radial load generated during the operation of the pump should not exceed 50um within the allowable working range as confirmed by the prototype test. 4.10.4 Diameter
If possible, the diameter of the shaft sleeve in the sealing area should comply with the provisions of GB5661. 4.10.5 Radial runout of the shaft
The manufacture and assembly of the shaft and sleeve (if installed) shall ensure the radial runout value at the radial plane passing through the outer end face of the stuffing box (see 3.15): the nominal outer diameter is less than 50mm, not more than 50um; the nominal outer diameter is 50~100mm, not more than 80m: the nominal outer diameter is greater than 100mm, not more than 100 μm.
4.10.6 Axial displacement
The allowable axial displacement of the rotor of the bearing shall not have a harmful effect on the performance of the mechanical seal. 4.11 Bearings
4.11.1 General
Standard types of rolling bearings are usually used. 4.11.2 Rolling bearing life
GB/T 5657—1995
Rolling bearings should be calculated and selected in accordance with the requirements of GB4662 and GB6391: the basic rated life (110)" when operating within the allowable operating range should be at least 10,000 hours.
4.11.3 Lubrication
The instruction manual should include information on the type, dosage and number of uses of the lubricant used. 4.11.4 Design of bearing housing
The bearing housing should be designed to prevent the intrusion of impurities and the loss of lubricant under normal working conditions. 4.12 Shaft seal
4.12.1 General
The design of the pump should allow or use mechanical seals Or use soft packing (except for pumps without stuffing box). Unless the working conditions require otherwise, the size of the seal chamber shall comply with the provisions of GB5661. 4.12.2 The stuffing box
shall provide sufficient space to replace the packing (including compression packing) without moving or disassembling any parts except the packing gland components and protective devices.
The packing gland shall be able to withstand the force required to compress the packing. 4.12.3 Mechanical seal
Mechanical seals shall be suitable for withstanding given working conditions. Suitable sealing element materials should be selected so that they can withstand corrosion, wear, temperature and mechanical stress, etc. The water pressure test pressure of the mechanical seal shall not exceed Ultimate sealing pressure. 4.13 Nameplate
The nameplate should be securely fastened to the pump.
The required information on the nameplate should at least include the manufacturer's name (or trademark) and address, the pump identification number (such as serial number or product number), model and size. The remaining space can provide additional information such as flow, head and speed. 4,14 Direction of rotation
The direction of rotation must be indicated by an arrow provided on a structurally secure protrusion. For movable coaxial pumps, the direction of the starting reaction can be indicated as alternating in both directions.
4.15 Coupling
If the drive motor is not an integral part of the pump, the pump should be connected to the drive motor by a flexible coupling. The coupling halves shall be effectively secured against circumferential and axial movement relative to the shaft. If the coupling parts are assembled together for balancing, their correct assembly position shall be indicated by permanent and prominent markings. Suitable, fixed coupling guards shall be provided. The guards shall be designed in accordance with national safety regulations. 4.16 Horizontal Pump Bases
4.16.1 General
Bases intended for grouted installations shall be rigid enough to accommodate freestanding installations or bolted installations on grouted foundations.
Bases requiring grouted installations shall be designed to ensure good grouting (e.g. air entrapment shall be prevented). 416.2 The assembly of the pump and driver on the base shall use shims or wedges to adjust the driver vertically to compensate for the tolerances of the pump, driver and base. If the buyer provides the driver or coupling, the buyer shall provide the pump manufacturer with certified installation dimensions for these devices. If the driver is not installed by the pump manufacturer and there is no other stipulation, the driver mounting holes shall not be drilled. 5 Materials
Unless otherwise specified by the buyer, the manufacturer shall select the materials based on the intended pumped liquid and intended application. 3
6 Factory inspection and testing
GB/T 56571995
The pressure-bearing parts of the pump shall be subjected to a water pressure test with a test pressure of at least 1.3 times the basic design pressure. Pumps are usually subjected to only certain other internal factory tests that can be determined by the manufacturer. If witnessed or non-self-testing is required, it should be stated in the inquiry order. If a hydraulic performance test is required, it should be carried out with cold water in accordance with GB3216 standard C grade. For other liquids other than cold water and some special working conditions, the hydraulic performance of the pump should be calculated by the manufacturer and the conversion method should be explained. If a noise test is required, the air noise measurement test emitted by the pump should be carried out in accordance with GB10890 or the agreement between the buyer and the manufacturer.
7 Preparation for shipment
7.1 General
All internal parts should be drained of liquid before shipment. If the bearing is oil lubricated, the liquid in the bearing box should be drained and a warning label "to be filled with oil" should be fixed.
7.2 Fixing of rotor components during transportation
In order to avoid damage to the bearings due to vibration during transportation, the rotor components should be fixed as required according to the distance and method of transportation, the rotor mass and the bearing type. At this time, the warning label should be firmly attached.7.3 Orifices
All orifices connected to the pressure chamber must be equipped with plugging parts to facilitate transportation. The plugging parts must be resistant to wind and rain erosion and must be strong enough to withstand accidental damage.||t t||7.4 Identification
The pump and all loose parts supplied with the pump must be marked with the specified identification number. The marking must be clear and durable. 7.5 Documentation
If not otherwise specified, the specified number of copies of the documents in Appendix C (reference) shall be supplied with the pump. GB/T5657-1995
Appendix A
Centrifugal Pump Data Sheet
(Reference)
A1 If a data sheet is required or requested, the following centrifugal pump data sheet may be used: - Buyer enquiries, orders and Contract processing; and manufacturers bid and manufacture.
42 The requirements for each component are in accordance with this standard. A3 In order to provide a larger space for writing or printing, the data sheet can be enlarged and divided into two pages, but in any case, the line number should comply with the standard data sheet.
A4 Data sheet filling instructions
In the appropriate column, use the symbol "×" to indicate the required information; a line marked with " must be filled in by the buyer when inquiring; the blank column can be used to briefly describe the required information, and can also be used to fill in the mark indicating that the information here has been modified: for the convenience of transmission To specify information in rows and columns, use the following table: Three-column row
Column 1
Two-column row
One-column row
Example: Row 29/2
Column 1
Column 2
Example: Row 55/1
Example: Row 7
Column 3
Column 2
GB/T5657--1995
45 Table A1 gives a more detailed explanation of various terms in the data table that are not generally understood. Table A1
Technical condition category
Driver
Site conditions
Available NPSH at rated/normal flow Solids content
Corrosive
Maximum inlet gauge pressure
Maximum pump shaft power at rated impeller diameter
Maximum pump shaft power at maximum impeller diameter Rated driver output power
Hazard
Maximum rated head curve
Methods for reducing axial force
Radial bearing type and specification
Thrust bearing type and specification
Type of device, installation, operation, construction or other characteristics Work tasks, such as: boiler feed pump, wastewater pump, fire pump, circulation pump, reflux pump, etc.
For example: GB/T ××××-××
If not directly driven, relevant information must be given in "Notes" Company name
Company name
For example, outdoor, indoor installation, other environmental conditions A fairly accurate name for the fluid. When the fluid is a mixture, the composition analysis must be given in the "Notes"
When specifying the available NPSH, it may be necessary to consider normal working conditions
The solid content and particle size, mass percentage, particle characteristics (spherical, square, rectangular) and solid density (kg/m3) in the fluid and other properties (such as tendency to agglomerate) must be given in "Notes\" The corrosive composition of the liquid
The maximum inlet pressure during operation, for example due to changes in system pressure, etc.
The maximum power requirement at rated impeller diameter and specified density, viscosity and speed
The maximum power requirement of the pump at maximum impeller diameter and specified density, viscosity and speed
The following factors must be considered when determining the power:
a. Function and operating mode;
b. Position of the operating point on the performance curve;
c. Friction loss of the shaft seal;
d. Circulating liquid flow of the mechanical seal; wwW.bzxz.Net
e. Medium characteristics (solid particles, density, viscosity) such as: flammable, toxic, odorous, corrosive and radioactive. The maximum field range under the installed impeller diameter
such as: axial thrust bearing, balance disc or balance drum, flat Balance hole, opposed impeller
Neck including internal clearance
Must include internal clearance knee
Supply of lubricant
Impeller form
Shaft seal configuration
Shaft seal type, size
Design pressure
Test pressure
Pump body support
Casing division
Driver
Mechanical seal element
Mechanical seal, auxiliary seal
GB/T 5657
Continued Table A1
Type of lubricant, e.g. oil, pressure oil, grease, etc. For example: oil pump, grease pump, oil level controller, grease cup, oil dipstick with observation hole, etc.
Type of impeller, e.g. closed, open, channel, etc. Indicated by appropriate symbols shown in Appendix D
Mechanical seal:
Type: Balanced (B)
Unbalanced (U)
Bellows (Z)
Dimensions: Nominal diameter of shaft sleeve (mm) is based on the shaft diameter passing through the stationary ring (e.g. GB5661)
Packing seal:
Dimensions: Shaft seal cavity diameter is in accordance with GB5661
Refers to auxiliary piping system (pipeline, cooler, etc.) Auxiliary piping system (pipes, coolers, etc.) For example: center support, foot support, bearing seat support with radial and axial divisions relative to the shaft
When there is more information, a separate data sheet or space in the "Notes" can be used. If necessary, the material code of mechanical sealing components specified in Chapter 5 of GB6556 can be used
For example: Type 0 sealing ring
The company or entrusting organization that is going to carry out the different tests, such as the manufacturer and the test standard to be implemented (51) and the name of the organization entrusting the test (52)
56571995
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再源游2. Fixing of rotor components during transportation
In order to avoid damage to bearings due to vibration during transportation, the rotor components should be fixed as required according to the distance and method of transportation, the mass of the rotor and the type of bearing. At this time, the warning label should be firmly attached. 7.3. Orifices
All orifices connected to the pressure chamber must be equipped with plugs to facilitate transportation. The plugs must be resistant to wind and rain erosion and strong enough to withstand accidental damage.
7.4. Identification
The pump and all loose parts supplied with the pump must be marked with the specified identification number. The identification must be clear and durable. 7.5. Documents
If not otherwise specified, the specified number of copies of the documents shall be supplied with the pump in accordance with Appendix C (reference). GB/T5657-1995
Appendix A
Centrifugal Pump Data Sheet
(Reference)
A1 If a data sheet is required or requested, the following centrifugal pump data sheet can be used for: - buyer enquiries, ordering and contract processing; and manufacturer bidding and manufacturing.
42 The requirements for each component are in accordance with this standard. A3 In order to provide more space for writing or printing, the data sheet can be enlarged and divided into two pages, but in any case, the line numbering should comply with the standard data sheet.
Instructions for filling in A4 data sheets
Use the symbol "×" in the appropriate column to indicate the required information; the row marked with " must be filled in by the buyer when inquiring; the blank column can be used to briefly describe the required information, and can also be used to fill in the mark indicating that the information here has been modified: To facilitate the transmission of information in designated rows and columns, the following table can be used: Three-column row
Column 1
Two-column row
One-column row
Example: Row 29/2
Column 1
Column 2
Example: Row 55/1
Example: Row 7
Column 3
Column 2
GB/T5657--1995
45 Table A1 gives a more comprehensive explanation of various terms in the data sheet that are not generally understood. Detailed explanation. Table A1
Technical condition category
Driver
Site conditions
Available NPSH at rated/normal flow rateSolid content
Corrosive
Maximum inlet gauge pressure
Maximum pump shaft power at rated impeller diameter
Maximum pump shaft power at maximum impeller diameterRated driver output power
Hazard
Maximum rated head curve
Axial force reduction method
Radial bearing type, specification
Thrust bearing type, specification
Type of device, installation, operation, construction or other characteristicsWorking tasks, such as: boiler feed pump, wastewater pump, fire pump, circulation pump, reflux pump, etc.
For example: GB/T ××××-××
If not directly driven, relevant information must be given in "Notes" Company name
Company name
For example, outdoor, indoor installation, other environmental conditions A fairly accurate name for the fluid. When the fluid is a mixture, the composition analysis must be given in the "Notes"
When specifying the available NPSH, it may be necessary to consider normal working conditions
The solid content and particle size, mass percentage, particle characteristics (spherical, square, rectangular) and solid density (kg/m3) in the fluid and other properties (such as tendency to agglomerate) must be given in "Notes\" The corrosive composition of the liquid
The maximum inlet pressure during operation, for example due to changes in system pressure, etc.
The maximum power requirement at rated impeller diameter and specified density, viscosity and speed
The maximum power requirement of the pump at maximum impeller diameter and specified density, viscosity and speed
The following factors must be considered when determining the power:
a. Function and operating mode;
b. Position of the operating point on the performance curve;
c. Friction loss of the shaft seal;
d. Circulating liquid flow of the mechanical seal;
e. Medium characteristics (solid particles, density, viscosity) such as: flammable, toxic, odorous, corrosive and radioactive. The maximum field range under the installed impeller diameter
such as: axial thrust bearing, balance disc or balance drum, flat Balance hole, opposed impeller
Neck including internal clearance
Must include internal clearance knee
Supply of lubricant
Impeller form
Shaft seal configuration
Shaft seal type, size
Design pressure
Test pressure
Pump body support
Casing division
Driver
Mechanical seal element
Mechanical seal, auxiliary seal
GB/T 5657
Continued Table A1
Type of lubricant, e.g. oil, pressure oil, grease, etc. For example: oil pump, grease pump, oil level controller, grease cup, oil dipstick with observation hole, etc.
Type of impeller, e.g. closed, open, channel, etc. Indicated by appropriate symbols shown in Appendix D
Mechanical seal:
Type: Balanced (B)
Unbalanced (U)
Bellows (Z)
Dimensions: Nominal diameter of shaft sleeve (mm) is based on the shaft diameter passing through the stationary ring (e.g. GB5661)
Packing seal:
Dimensions: Shaft seal cavity diameter is in accordance with GB5661
Refers to auxiliary piping system (pipeline, cooler, etc.) Auxiliary piping system (pipes, coolers, etc.) For example: center support, foot support, bearing seat support with radial and axial divisions relative to the shaft
When there is more information, a separate data sheet or space in the "Notes" can be used. If necessary, the material code of mechanical sealing components specified in Chapter 5 of GB6556 can be used
For example: Type 0 sealing ring
The company or entrusting organization that is going to carry out the different tests, such as the manufacturer and the test standard to be implemented (51) and the name of the organization entrusting the test (52)
56571995
oruru/
(d)#（H）
(S) (
潮面觉
uup/8y
再源游2. Fixing of rotor components during transportation
In order to avoid damage to bearings due to vibration during transportation, the rotor components should be fixed as required according to the distance and method of transportation, the mass of the rotor and the type of bearing. At this time, the warning label should be firmly attached. 7.3. Orifices
All orifices connected to the pressure chamber must be equipped with plugs to facilitate transportation. The plugs must be resistant to wind and rain erosion and strong enough to withstand accidental damage.
7.4. Identification
The pump and all loose parts supplied with the pump must be marked with the specified identification number. The identification must be clear and durable. 7.5. Documents
If not otherwise specified, the specified number of copies of the documents shall be supplied with the pump in accordance with Appendix C (reference). GB/T5657-1995
Appendix A
Centrifugal Pump Data Sheet
(Reference)
A1 If a data sheet is required or requested, the following centrifugal pump data sheet can be used for: - buyer enquiries, ordering and contract processing; and manufacturer bidding and manufacturing.
42 The requirements for each component are in accordance with this standard. A3 In order to provide more space for writing or printing, the data sheet can be enlarged and divided into two pages, but in any case, the line numbering should comply with the standard data sheet.
Instructions for filling in A4 data sheets
Use the symbol "×" in the appropriate column to indicate the required information; the row marked with " must be filled in by the buyer when inquiring; the blank column can be used to briefly describe the required information, and can also be used to fill in the mark indicating that the information here has been modified: To facilitate the transmission of information in designated rows and columns, the following table can be used: Three-column row
Column 1
Two-column row
One-column row
Example: Row 29/2
Column 1
Column 2
Example: Row 55/1
Example: Row 7
Column 3
Column 2
GB/T5657--1995
45 Table A1 gives a more comprehensive explanation of various terms in the data sheet that are not generally understood. Detailed explanation. Table A1
Technical condition category
Driver
Site conditions
Available NPSH at rated/normal flow rateSolid content
Corrosive
Maximum inlet gauge pressure
Maximum pump shaft power at rated impeller diameter
Maximum pump shaft power at maximum impeller diameterRated driver output power
Hazard
Maximum rated head curve
Axial force reduction method
Radial bearing type, specification
Thrust bearing type, specification
Type of device, installation, operation, construction or other characteristicsWorking tasks, such as: boiler feed pump, wastewater pump, fire pump, circulation pump, reflux pump, etc.
For example: GB/T ××××-××
If not directly driven, relevant information must be given in "Notes" Company name
Company name
For example, outdoor, indoor installation, other environmental conditions A fairly accurate name for the fluid. When the fluid is a mixture, the composition analysis must be given in the "Notes"
When specifying the available NPSH, it may be necessary to consider normal working conditions
The solid content and particle size, mass percentage, particle characteristics (spherical, square, rectangular) and solid density (kg/m3) in the fluid and other properties (such as tendency to agglomerate) must be given in "Notes\" The corrosive composition of the liquid
The maximum inlet pressure during operation, for example due to changes in system pressure, etc.
The maximum power requirement at rated impeller diameter and specified density, viscosity and speed
The maximum power requirement of the pump at maximum impeller diameter and specified density, viscosity and speed
The following factors must be considered when determining the power:
a. Function and operating mode;
b. Position of the operating point on the performance curve;
c. Friction loss of the shaft seal;
d. Circulating liquid flow of the mechanical seal;
e. Medium characteristics (solid particles, density, viscosity) such as: flammable, toxic, odorous, corrosive and radioactive. The maximum field range under the installed impeller diameter
such as: axial thrust bearing, balance disc or balance drum, flat Balance hole, opposed impeller
Neck including internal clearance
Must include internal clearance knee
Supply of lubricant
Impeller form
Shaft seal configuration
Shaft seal type, size
Design pressure
Test pressure
Pump body support
Casing division
Driver
Mechanical seal element
Mechanical seal, auxiliary seal
GB/T 5657
Continued Table A1
Type of lubricant, e.g. oil, pressure oil, grease, etc. For example: oil pump, grease pump, oil level controller, grease cup, oil dipstick with observation hole, etc.
Type of impeller, e.g. closed, open, channel, etc. Indicated by appropriate symbols shown in Appendix D
Mechanical seal:
Type: Balanced (B)
Unbalanced (U)
Bellows (Z)
Dimensions: Nominal diameter of shaft sleeve (mm) is based on the shaft diameter passing through the stationary ring (e.g. GB5661)
Packing seal:
Dimensions: Shaft seal cavity diameter is in accordance with GB5661
Refers to auxiliary piping system (pipeline, cooler, etc.) Auxiliary piping system (pipes, coolers, etc.) For example: center support, foot support, bearing seat support with radial and axial divisions relative to the shaft
When there is more information, a separate data sheet or space in the "Notes" can be used. If necessary, the material code of mechanical sealing components specified in Chapter 5 of GB6556 can be used
For example: Type 0 sealing ring
The company or entrusting organization that is going to carry out the different tests, such as the manufacturer and the test standard to be implemented (51) and the name of the organization entrusting the test (52)
56571995
oruru/
(d)#（H）
(S) (
潮面觉
uup/8y
再源游5 Documents
If not otherwise specified, the specified number of copies of the documents shall be supplied with the pump in accordance with Appendix C (reference). GB/T5657-1995
Appendix A
Centrifugal Pump Data Sheet
(reference)
A1 If a data sheet is required or requested, the following centrifugal pump data sheet may be used for: - buyer enquiries, ordering and contract processing; and manufacturer bidding and manufacturing.
42 The requirements for each component are in accordance with this standard. A3 To provide more space for writing or printing, the data sheet may be enlarged and divided into two pages, but in any case, the line numbering should conform to the standard data sheet.
Instructions for filling in A4 data sheets
Use the symbol "×" in the appropriate column to indicate the required information; the row marked with " must be filled in by the buyer when inquiring; the blank column can be used to briefly describe the required information, and can also be used to fill in the mark indicating that the information here has been modified: To facilitate the transmission of information in designated rows and columns, the following table can be used: Three-column row
Column 1
Two-column row
One-column row
Example: Row 29/2
Column 1
Column 2
Example: Row 55/1
Example: Row 7
Column 3
Column 2
GB/T5657--1995
45 Table A1 gives a more comprehensive explanation of various terms in the data sheet that are not generally understood. Detailed explanation. Table A1
Technical condition category
Driver
Site conditions
Available NPSH at rated/normal flow rateSolid content
Corrosive
Maximum inlet gauge pressure
Maximum pump shaft power at rated impeller diameter
Maximum pump shaft power at maximum impeller diameterRated driver output power
Hazard
Maximum rated head curve
Axial force reduction method
Radial bearing type, specification
Thrust bearing type, specification
Type of device, installation, operation, construction or other characteristicsWorking tasks, such as: boiler feed pump, wastewater pump, fire pump, circulation pump, reflux pump, etc.
For example: GB/T ××××-××
If not directly driven, relevant information must be given in "Notes" Company name
Company name
For example, outdoor, indoor installation, other environmental conditions A fairly accurate name for the fluid. When the fluid is a mixture, the composition analysis must be given in the "Notes"
When specifying the available NPSH, it may be necessary to consider normal working conditions
The solid content and particle size, mass percentage, particle characteristics (spherical, square, rectangular) and solid density (kg/m3) in the fluid and other properties (such as tendency to agglomerate) must be given in "Notes\" The corrosive composition of the liquid
The maximum inlet pressure during operation, for example due to changes in system pressure, etc.
The maximum power requirement at rated impeller diameter and specified density, viscosity and speed
The maximum power requirement of the pump at maximum impeller diameter and specified density, viscosity and speed
The following factors must be considered when determining the power:
a. Function and operating mode;
b. Position of the operating point on the performance curve;
c. Friction loss of the shaft seal;
d. Circulating liquid flow of the mechanical seal;
e. Medium characteristics (solid particles, density, viscosity) such as: flammable, toxic, odorous, corrosive and radioactive. The maximum field range under the installed impeller diameter
such as: axial thrust bearing, balance disc or balance drum, flat Balance hole, opposed impeller
Neck including internal clearance
Must include internal clearance knee
Supply of lubricant
Impeller form
Shaft seal configuration
Shaft seal type, size
Design pressure
Test pressure
Pump body support
Casing division
Driver
Mechanical seal element
Mechanical seal, auxiliary seal
GB/T 5657
Continued Table A1
Type of lubricant, e.g. oil, pressure oil, grease, etc. For example: oil pump, grease pump, oil level controller, grease cup, oil dipstick with observation hole, etc.
Type of impeller, e.g. closed, open, channel, etc. Indicated by appropriate symbols shown in Appendix D
Mechanical seal:
Type: Balanced (B)
Unbalanced (U)
Bellows (Z)
Dimensions: Nominal diameter of shaft sleeve (mm) is based on the shaft diameter passing through the stationary ring (e.g. GB5661)
Packing seal:
Dimensions: Shaft seal cavity diameter is in accordance with GB5661
Refers to auxiliary piping system (pipeline, cooler, etc.) Auxiliary piping system (pipes, coolers, etc.) For example: center support, foot support, bearing seat support with radial and axial divisions relative to the shaft
When there is more information, a separate data sheet or space in the "Notes" can be used. If necessary, the material code of mechanical sealing components specified in Chapter 5 of GB6556 can be used
For example: Type 0 sealing ring
The company or entrusting organization that is going to carry out the different tests, such as the manufacturer and the test standard to be implemented (51) and the name of the organization entrusting the test (52)
56571995
oruru/
(d)#（H）
(S) (
潮面觉
uup/8y
再源游5 Documents
If not otherwise specified, the specified number of copies of the documents shall be supplied with the pump in accordance with Appendix C (reference). GB/T5657-1995
Appendix A
Centrifugal Pump Data Sheet
(reference)
A1 If a data sheet is required or requested, the following centrifugal pump data sheet may be used for: - buyer enquiries, ordering and contract processing; and manufacturer bidding and manufacturing.
42 The requirements for each component are in accordance with this standard. A3 To provide more space for writing or printing, the data sheet may be enlarged and divided into two pages, but in any case, the line numbering should conform to the standard data sheet.
Instructions for filling in A4 data sheets
Use the symbol "×" in the appropriate column to indicate the required information; the row marked with " must be filled in by the buyer when inquiring; the blank column can be used to briefly describe the required information, and can also be used to fill in the mark indicating that the information here has been modified: To facilitate the transmission of information in designated rows and columns, the following table can be used: Three-column row
Column 1
Two-column row
One-column row
Example: Row 29/2
Column 1
Column 2
Example: Row 55/1
Example: Row 7
Column 3
Column 2
GB/T5657--1995
45 Table A1 gives a more comprehensive explanation of various terms in the data sheet that are not generally understood. Detailed explanation. Table A1
Technical condition category
Driver
Site conditions
Available NPSH at rated/normal flow rateSolid content
Corrosive
Maximum inlet gauge pressure
Maximum pump shaft power at rated impeller diameter
Maximum pump shaft power at maximum impeller diameterRated driver output power
Hazard
Maximum rated head curve
Axial force reduction method
Radial bearing type, specification
Thrust bearing type, specification
Type of device, installation, operation, construction or other characteristicsWorking tasks, such as: boiler feed pump, wastewater pump, fire pump, circulation pump, reflux pump, etc.
For example: GB/T ××××-××
If not directly driven, relevant information must be given in "Notes" Company name
Company name
For example, outdoor, indoor installation, other environmental conditions A fairly accurate name for the fluid. When the fluid is a mixture, the composition analysis must be given in the "Notes"
When specifying the available NPSH, it may be necessary to consider normal working conditions
The solid content and particle size, mass percentage, particle characteristics (spherical, square, rectangular) and solid density (kg/m3) in the fluid and other properties (such as tendency to agglomerate) must be given in "Notes\" The corrosive composition of the liquid
The maximum inlet pressure during operation, for example due to changes in system pressure, etc.
The maximum power requirement at rated impeller diameter and specified density, viscosity and speed
The maximum power requirement of the pump at maximum impeller diameter and specified density, viscosity and speed
The following factors must be considered when determining the power:
a. Function and operating mode;
b. Position of the operating point on the performance curve;
c. Friction loss of the shaft seal;
d. Circulating liquid flow of the mechanical seal;
e. Medium characteristics (solid particles, density, viscosity) such as: flammable, toxic, odorous, corrosive and radioactive. The maximum field range under the installed impeller diameter
such as: axial thrust bearing, balance disc or balance drum, flat Balance hole, opposed impeller
Neck including internal clearance
Must include internal clearance knee
Supply of lubricant
Impeller form
Shaft seal configuration
Shaft seal type, size
Design pressure
Test pressure
Pump body support
Casing division
Driver
Mechanical seal element
Mechanical seal, auxiliary seal
GB/T 5657
Continued Table A1
Type of lubricant, e.g. oil, pressure oil, grease, etc. For example: oil pump, grease pump, oil level controller, grease cup, oil dipstick with observation hole, etc.
Type of impeller, e.g. closed, open, channel, etc. Indicated by appropriate symbols shown in Appendix D
Mechanical seal:
Type: Balanced (B)
Unbalanced (U)
Bellows (Z)
Dimensions: Nominal diameter of shaft sleeve (mm) is based on the shaft diameter passing through the stationary ring (e.g. GB5661)
Packing seal:
Dimensions: Shaft seal cavity diameter is in accordance with GB5661
Refers to auxiliary piping system (pipeline, cooler, etc.) Auxiliary piping system (pipes, coolers, etc.) For example: center support, foot support, bearing seat support with radial and axial divisions relative to the shaft
When there is more information, a separate data sheet or space in the "Notes" can be used. If necessary, the material code of mechanical sealing components specified in Chapter 5 of GB6556 can be used
For example: Type 0 sealing ring
The company or entrusting organization that is going to carry out the different tests, such as the manufacturer and the test standard to be implemented (51) and the name of the organization entrusting the test (52)
56571995
oruru/
(d)#（H）
(S) (
潮面觉
uup/8y
再源游Characteristics of the medium (solid particles, density, viscosity) For example: flammable, toxic, odorous, corrosive and radioactive Maximum range under the installed impeller diameter
For example: axial thrust bearing, balance disc or balance drum, balance hole, opposed impeller
Neck including internal clearance
Must include internal clearance knee
Lubricant supply
Impeller form
Shaft seal configuration
Shaft seal type and size
Design pressure
Test pressure
Pump body support
Casing division
Driver
Mechanical seal element
Mechanical seal, auxiliary seal
GB/T 5657
Continued Table A1
Type of lubricant, e.g. oil, pressure oil, grease, etc. For example: oil pump, grease pump, oil level controller, grease cup, oil dipstick with observation hole, etc.
Type of impeller, e.g. closed, open, channel, etc. Indicated by appropriate symbols shown in Appendix D
Mechanical seal:
Type: Balanced (B)
Unbalanced (U)
Bellows (Z)
Dimensions: Nominal diameter of shaft sleeve (mm) is based on the shaft diameter passing through the stationary ring (e.g. GB5661)
Packing seal:
Dimensions: Shaft seal cavity diameter is in accordance with GB5661
Refers to auxiliary piping system (pipeline, cooler, etc.) Auxiliary piping system (pipes, coolers, etc.) For example: center support, foot support, bearing seat support with radial and axial divisions relative to the shaft
When there is more information, a separate data sheet or space in the "Notes" can be used. If necessary, the material code of mechanical sealing components specified in Chapter 5 of GB6556 can be used
For example: Type 0 sealing ring
The company or entrusting organization that is going to carry out the different tests, such as the manufacturer and the test standard to be implemented (51) and the name of the organization entrusting the test (52)
56571995
oruru/
(d)#（H）
(S) (
潮面觉
uup/8y
再源游Characteristics of the medium (solid particles, density, viscosity) For example: flammable, toxic, odorous, corrosive and radioactive Maximum range under the installed impeller diameter
For example: axial thrust bearing, balance disc or balance drum, balance hole, opposed impeller
Neck including internal clearance
Must include internal clearance knee
Lubricant supply
Impeller form
Shaft seal configuration
Shaft seal type and size
Design pressure
Test pressure
Pump body support
Casing division
Driver
Mechanical seal element
Mechanical seal, auxiliary seal
GB/T 5657
Continued Table A1
Type of lubricant, e.g. oil, pressure oil, grease, etc. For example: oil pump, grease pump, oil level controller, grease cup, oil dipstick with observation hole, etc.
Type of impeller, e.g. closed, open, channel, etc. Indicated by appropriate symbols shown in Appendix D
Mechanical seal:
Type: Balanced (B)
Unbalanced (U)
Bellows (Z)
Dimensions: Nominal diameter of shaft sleeve (mm) is based on the shaft diameter passing through the stationary ring (e.g. GB5661)
Packing seal:
Dimensions: Shaft seal cavity diameter is in accordance with GB5661
Refers to auxiliary piping system (pipeline, cooler, etc.) Auxiliary piping system (pipes, coolers, etc.) For example: center support, foot support, bearing seat support with radial and axial divisions relative to the shaft
When there is more information, a separate data sheet or space in the "Notes" can be used. If necessary, the material code of mechanical sealing components specified in Chapter 5 of GB6556 can be used
For example: Type 0 sealing ring
The company or entrusting organization that is going to carry out the different tests, such as the manufacturer and the test standard to be implemented (51) and the name of the organization entrusting the test (52)
56571995
oruru/
(d)#（H）
(S) (
潮面觉
uup/8y
再源游
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