Some standard content:
JB/T8645—1997
Appendix A of this standard is a reminder appendix.
This standard is proposed and managed by the National Pump Standardization Technical Committee.
The responsible drafting units of this standard are: Institute of Irrigation and Drainage Machinery of Jiangsu University of Technology, Zhejiang Electromechanical Design Institute, Hangzhou Pump General Factory, Taizhou Xinjie Pump Industry Company, Taizhou Jiadi Screw Pump Industry Company, Tianjin Industrial Pump General Factory. The main drafters of this standard are: Xi Xuan, Lin Kan, Hong Zhensheng, Wei Shunlian, Yang Ling, Zhao Hengfeng. 718
1 Scope
Machinery Industry Standard of the People's Republic of China
Submersible Screw Pump
JB/T 8645—1997
This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking and packaging of submersible screw pumps (hereinafter referred to as pumps).
This standard applies to single-phase or three-phase submersible screw pumps that are submerged in water and connected to submersible motors, with a maximum head of 120m, a maximum flow of 30m/h, and a motor power of 0.25~7.5kW. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB191-90 Packaging, storage and transportation pictorial marks
GB755--87 Basic technical requirements for rotating electrical machines GB1971-80 Motor line terminal markings and rotation direction GB2828-87 Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) GB5013.2-85 Rubber insulated flexible cables with rated voltages of 450/750V and below Part 2 General purpose rubber sheathed flexible wires GB/T12785-91 Test methods for submersible electric pumps JB/T4297-92 Technical conditions for painting of pump products JB/T6880. 1—93 Grey iron castings for pumps
JB/T6880.2—93 Steel castings for pumps
JB/T7591—94 General technical conditions for starting components of small single-phase asynchronous motors JB/T8091-—95
Test methods for screw pumps
JB/Z346--89 Test limits for insulation between turns of AC low-voltage motors with scattered windings 3 Types and basic parameters
3.1 Type
3.1.1 The pump is vertical, and the pump and motor are connected as one and work underwater. The pump is located above the motor. 3.1.2 The casing protection of the pump is IPX8.
3.1.3 The pump quota is a continuous quota based on the continuous working system (S1). 3.1.4 From the drive end, the pump rotates counterclockwise. 3.2 Model
Pump models are represented by capital Chinese phonetic letters and Arabic numerals. 3.2.1 Motor type characteristics
Motor type characteristics are represented by the following capital Chinese phonetic letters: "Y\ represents oil-filled submersible motor;
"S\ represents water-filled submersible motor;
Approved by the Ministry of Machinery Industry of the People's Republic of China on October 5, 1997 and implemented on January 1, 1998
No letters represent dry submersible motors.
3.2.2 Model Indication Method
QG口O
3.2.3 Model Marking Example
JB/T8645—1997
Motor Matching Power, W
Head, m
Flow, m3/h
Motor Phases, Three-phase No Marking, Single-phase Marking D Motor Type Characteristics, According to 3.2.1
Submersible Screw Pump
QGY4-120-2.2 indicates a three-phase oil-filled submersible screw pump with a flow rate of 4.0m/h, a head of 120m, and a motor matching power of 2.2kW.
QGD1.2-100-0.55 indicates a single-phase dry submersible screw pump with a flow rate of 1.2m/h, a head of 100m, and a motor matching power of 0.55kW.
3.3 Basic parameters
3.3.1 The basic parameters of the pump when the frequency is 50Hz and the rated voltage is 380V (three-phase) or 220V (single-phase) shall comply with the values specified in Table 1. 3.3.2
When the power supply voltage drops to 0.85 times the rated voltage, the flow rate in Table 1 is allowed to drop by 25%, and the efficiency of the pump unit will drop by 20% accordingly. Table 1 Basic parameters of submersible screw pump
Pump unit efficiency
n=1 450 r/min
n=2 850 r/min
Technical requirements
JB/T8645—1997
Table 1 (end)
n= 1 450 r/min
Pump unit efficiency
n=2 850 r/min
4.1 The pump shall comply with the requirements of this standard and be manufactured according to the product drawings and technical documents approved through the prescribed procedures. 4.2 The pump should be able to operate continuously and normally under the following conditions: QGS
a) The shallowest depth of the pump submerged in water is not less than 0.5m, the deepest depth of the dry pump is not more than 15m, and the deepest depth of the water-filled and oil-filled pumps is not more than 30m; b) The water temperature does not exceed 40℃;
c) The pH value of the water is 6.58.5,
d) The solid content in the water (mass ratio) does not exceed 3%, the particle size is not more than 2 mm, and the fiber length does not exceed 0.3 times the rotor pitch. 4.3 The efficiency tolerance of the pump unit is as specified in Table 2. Table 2 Efficiency tolerance of the pump unit
Power of the pump matching motor
0. 25~0. 75
4.4 The flow rate of the pump under the specified head is not less than 95% of the flow rate at the specified point. Pump unit efficiency tolerance
4.5 During the operation of the pump, the influence of power supply voltage and frequency changes on motor performance and temperature rise limit shall comply with the provisions of GB755. 4.6 The electrical performance of the motor shall meet the following requirements: When the power, voltage and frequency are rated values, the guaranteed value of the motor power factor shall comply with the provisions of Table 3, and the guaranteed value of the motor efficiency shall comply with Appendix A (suggestive appendix);
Matching power
JB/T 8645-1997
Guaranteed value of motor power factor
2-pole motor
n=2 850 r/min
4-pole motor
n=1 450 r/min
Under rated voltage, the guaranteed value of the motor's stall torque shall not be less than 1.2 times the rated torque for a single-phase capacitor-start motor, and shall not be less than 1.8 times the rated torque for a 2-pole or 4-pole three-phase motor; Under rated voltage, the guaranteed value of the motor's maximum torque shall not be less than 1.8 times the rated torque for a single-phase motor, and shall not be less than 2 times the rated torque for a 2-pole or 4-pole three-phase motor;
Under rated voltage, the guaranteed value of the motor's stall current shall not exceed 7 times the rated current; The tolerance of the guaranteed value of the motor's electrical performance shall comply with the provisions of Table 4. Table 4 Tolerance of guaranteed values of motor electrical performance
Power factor (cosp)
Stalled torque
Maximum torque
Stalled current
—1/6 (1—cosg) Minimum—0.02, maximum—0.07 Guaranteed value -15%
Guaranteed value 10%
Guaranteed value +20%
When the pump is fully submerged in water, the temperature rise limit of the stator winding (resistance method) of the motor when running at rated power shall not exceed the provisions of 4.7 of Table 5.
4.8 The insulation resistance of the stator winding of the motor to the housing shall not be lower than the provisions of Table 6. The insulation resistance measurement of the water-filled motor shall be carried out after the stator winding has been immersed in water at room temperature for 12 hours. 4.9 When the motor is powered by a three-phase balanced power supply, the deviation of any phase of the motor's three-phase no-load current from the three-phase average value should not be greater than 10% of the three-phase average value.
Motor type
Water-filled type
Oil-filled type
Motor type
Water-filled type
Oil-filled type
JB/T 8645—1997
Table 5 Temperature rise limit of motor stator winding
Insulation material or insulation grade
Polyethylene
Polyvinyl chloride
Table 6 Insulation resistance of motor stator winding to housing Insulation material or insulation grade
San Vinyl
Polyvinyl chloride
E, B, F grade
Actual cold state
Temperature rise limit
When close to the working temperature
4.10 The stator winding of the motor shall be able to withstand a withstand voltage test lasting 1 minute without breakdown. The frequency of the test voltage is 50Hz and it shall be a sine wave as much as possible. The effective value of the test voltage: 1000V + 2 times the rated voltage. The minimum is 1500V. When testing pumps produced in large quantities, it is allowed to use a test of 120% of the test voltage for 1 second instead, and the test voltage is applied by a test rod. The withstand voltage test of the water-filled motor shall be carried out after the stator winding has been immersed in normal temperature water for 12 hours. During the type test, the withstand voltage test of the stator winding shall be carried out when the winding is close to the operating temperature. 4.11 The stator winding of the oil-filled and dry motor shall be able to withstand the inter-turn impulse withstand voltage test without breakdown of the inter-turn insulation. The test voltage (bee value) shall be in accordance with the provisions of JB/Z346.
4.12 The centrifugal switch or other switch used for starting the single-phase motor shall have a disconnecting speed of 60% to 75% of the specified speed after installation, and other performances shall comply with the provisions of JB/T7591.
4.13 The pump shall be equipped with an overheat or overcurrent protection device, and may also be equipped with a leakage protection device according to user requirements. 4.14 The lead-out cable of the pump shall adopt the YZW type medium-sized rubber sheathed cable or the cable with phase-to-phase performance specified in GB5013.2. The cable length shall not be less than 5m, and the specific length may also be determined by the supply and the supply parties in the contract. 4.15 All parts and components in the pump that bear water pressure shall be subjected to water (gas) pressure test without leakage, and the test pressure shall be 1.5 times the working pressure, but not less than 0.2MPa. After the pump is assembled, the inner cavity and sealing cavity of the motor should be able to withstand a 3-minute water (gas) pressure test without leakage. The test pressure is 0.2 MPa for oil-filled and dry motors and 0.05 MPa for water-filled motors. 4.16 The materials of the main parts and components of the pump should be selected according to the performance of the medium to be transported and in accordance with the following regulations: a) The overcurrent parts and components (suction chamber, discharge chamber, etc.) can be made of cast iron, cast steel and other materials, b) The motor rotor shaft and intermediate shaft can be made of 45 high-quality carbon steel, 40Cr alloy structural steel and other materials, c) The rotor can be made of 40Cr chrome-plated or 45 steel chrome-plated; d) The stator can be made of natural rubber and nitrile rubber, etc., e) If the user has special requirements, it can be selected according to the contract requirements. 4.17 The castings selected for the pump should comply with the provisions of JB/T6880.1 and JB/T6880.2. 4.18 The pump should have a reliable grounding device and grounding wire. The grounding wire of the lead-out cable should have an obvious grounding mark, and the wire and cable marks and rotation direction should comply with the provisions of GB1971, and should ensure that it is not easy to be damaged during the service life of the pump. 4.19 When inspecting the pump, the no-load current, no-load loss, stall current and stall loss of the motor should be controlled within an appropriate range to ensure that the motor performance meets the provisions of 4.6.
4.20 When the pump is used under the specified working conditions, the dry and oil-filled pumps shall run without trouble for not less than 2000 hours; the water-filled pump shall run without trouble for not less than 1000 hours. The life of the stator and rotor of the main hydraulic components shall not be less than 2000 hours. When tested under no-load conditions, the volumetric efficiency drops to 90% value 723
, which is the end of life point.
JB/T 8645—1997
4.21 The assembly of the pump should be complete and correct. After assembly, it should be able to rotate freely and smoothly without sticking. The nameplate markings should be complete, accurate and clear. The pump surface should be free of stains, bumps and cracks. 4.22 The surface of the pump shell should be painted according to the provisions of JB/T4297, and the exposed machined surface should be painted with anti-rust paint. 4.23 Under the condition that the user complies with the transportation, storage, installation and use rules of the pump, within 12 months from the date of shipment from the manufacturer, the use period shall not exceed 6 months, if the pump is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall be responsible for replacing or repairing parts (excluding normal damage of wearing parts) or the whole machine for the user. 5 Test method
The hydraulic performance test of the pump shall be in accordance with JB/T8091, and the test of the submersible motor shall be in accordance with GB/T·12785. During the test, the pump shall be submerged in water, and the pump parameters shall be converted to the pump parameters at the specified speed based on the actual measured results. The relay length during the test is 5m. 6 Inspection rules
6.1 Each pump shall be inspected and qualified, and can only be shipped with a product certificate. 6.2 Factory inspection items:
a) Appearance inspection;
b) Determination of DC resistance of motor stator winding in actual cold state; c) Determination of cold insulation resistance of motor stator winding to housing; d) Withstand voltage test;
e) Water (air) pressure test of pump;
f) Turn-to-turn impulse withstand voltage test:
g) Determination of disconnecting speed of centrifugal switch;
h) Determination of flow rate and pump unit efficiency at specified head point; The sampling method shall be in accordance with the one-time sampling plan specified in GB2828. The general inspection level is straight, and the qualified quality level AQL is 4.0. 6.3 Type test should be carried out in any of the following situations: a) Trial determination and identification of new products or old products for transfer to factory production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) Regular sampling of pumps produced in batches (at least once a year), with no less than two units sampled each time; d) When the product resumes production after a long period of suspension; e) When the inspection results are significantly different from the results of the last type test; f) When the national quality supervision agency puts forward the requirements for type test. 6.4 Pump type test items include;
a) All items of factory inspection, but 6.2c) should measure the hot insulation resistance; Wei) Temperature rise test;
c) Determination of pump hydraulic characteristic curve (including: head-flow curve, head-pump unit efficiency curve); d) Determination of motor characteristic curve (including: power factor-output power curve, stator current-output power curve, and stall characteristic curve). 6.5 When new product trials and changes to sealing devices may affect sealing performance, leakage measurements of the sealing devices must be performed. 7 Marking and packaging
7.1 The material of the nameplate and the method of engraving the data on the nameplate should ensure that the writing is not easily erased during the entire service life. 7.2 The nameplate should be fixed in a conspicuous position on the pump. The items that should be indicated are as follows: a) Manufacturer's name;
b) Pump model and name;
c) Head;
d) Flow rate;
e) Water outlet diameter;
f) Matching power;
g) Rated frequency,
h) Rated voltage;
i) Rated current,
Speed;
k) Number of phases,
1) Insulation level or temperature rise
m) Manufacturer's factory number and year and month of production, n) Pump quality
p) Product standard number.
7.3 The pump should have an obvious turning mark.
JB/T 8645—1997
7.4 The words and signs on the outer wall of the packaging box should be clear and standardized. The contents are as follows: a) Name of the shipping station and manufacturer,
b) Name of the receiving station and receiving unit;
c) Pump model and factory number;
d) Net weight of the pump and gross weight with packaging:
e) Box dimensions,
f) Necessary words and drawings such as "upward", "handle with care", "afraid of heat", "afraid of freezing", and "temperature limit" should be marked on appropriate parts of the packaging box, and the drawings should comply with the provisions of GB191.
7.5 The packaging of the pump should ensure that the pump will not be damaged due to improper packaging under normal transportation conditions. The water in the water-filled pump should be drained before packaging.
7.6 Each pump should be accompanied by the following random documents and accessories: a) Packing list,
b) Product certificate;
c) Operation and maintenance instructions,
d) Necessary random accessories.
Guaranteed motor efficiency values are shown in Table A1.
JB/T 8645—1997
Appendix A
(Suggested Appendix)
Guaranteed motor efficiency values
Table A1 Guaranteed motor efficiency values
2-pole motor
n=2850r/min
4-pole motor
n=1450 r/min2. The YZW medium rubber sheath cable or the interphase performance cable specified in 4.15. The cable length shall not be less than 5m, and the specific length can also be determined by the supplier and the belt supplier in the contract. 4.15 All parts and components in the pump that bear water pressure shall be subjected to water (gas) pressure test without leakage, and the test pressure shall be 1.5 times the working pressure, but not less than 0.2MPa. After the pump is assembled, the inner cavity and sealing cavity of the motor shall be able to withstand a water (gas) pressure test lasting 3 minutes without leakage. The test pressure is 0.2 MPa for oil-filled and dry motors and 0.05 MPa for water-filled motors. 4.16 The materials of the main parts and components of the pump should be selected according to the performance of the medium to be transported and in accordance with the following regulations: a) The overcurrent parts and components (suction chamber, discharge chamber, etc.) can be made of cast iron, cast steel, etc. b) The motor rotor shaft and intermediate shaft can be made of 45 high-quality carbon steel, 40Cr alloy structural steel, etc. c) The rotor can be made of 40Cr chrome-plated or 45 steel chrome-plated; d) The stator can be made of natural rubber and nitrile rubber, etc. e) If the user has special requirements, it can be selected according to the contract requirements. 4.17 The castings selected for the pump should comply with the provisions of JB/T6880.1 and JB/T6880.2. 4.18 The pump should have a reliable grounding device and grounding wire. The grounding wire of the lead-out cable should have an obvious grounding mark, and the wire and cable mark and rotation direction should comply with the provisions of GB1971, and it should be ensured that it is not easy to be damaged during the service life of the pump. 4.19 During the inspection of the pump, the no-load current, no-load loss, stall current and stall loss of the motor shall be controlled within an appropriate range to ensure that the motor performance meets the requirements of 4.6.
4.20 When the pump is used under the specified working conditions, the dry and oil-filled pumps shall run without trouble for not less than 2000 hours; the water-filled pumps shall run without trouble for not less than 1000 hours. The life of the stator and rotor of the main hydraulic components shall not be less than 2000 hours. When tested under no-load conditions, the end point of life is when the volumetric efficiency drops to 90% value 723
.
JB/T 8645—1997
4.21 The pump shall be assembled completely and correctly. After assembly, it shall be able to rotate freely and smoothly without any jamming. The nameplate markings shall be complete, accurate and clear. There shall be no stain, bruises or cracks on the surface of the pump. 4.22 The surface of the pump housing shall be painted in accordance with the provisions of JB/T4297, and the exposed machined surface shall be painted with anti-rust paint. 4.23 Under the condition that the user complies with the transportation, storage, installation and use rules of the pump, within 12 months from the date of shipment from the manufacturer, the use period shall not exceed 6 months, if the pump is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall be responsible for replacing or repairing parts (excluding normal damage of wearing parts) or the whole machine for the user. 5 Test method
The hydraulic performance test of the pump shall be in accordance with JB/T8091, and the test of the submersible motor shall be in accordance with GB/T·12785. During the test, the pump shall be submerged in water, and the parameters of the pump shall be converted to the parameters of the pump at the specified speed based on the actual measured results. The relay length during the test is 5m. 6 Inspection rules
6.1 Each pump shall be inspected and qualified, and shall be accompanied by a product certificate before leaving the factory. 6.2 Factory inspection items:
a) Appearance inspection;
b) Determination of DC resistance of motor stator winding in actual cold state; c) Determination of cold insulation resistance of motor stator winding to housing; d) Withstand voltage test;
e) Water (air) pressure test of pump;
f) Turn-to-turn impulse withstand voltage test:
g) Determination of disconnecting speed of centrifugal switch;
h) Determination of flow rate and pump unit efficiency at specified head point; The sampling method shall be in accordance with the one-time sampling plan specified in GB2828. The general inspection level is straight, and the qualified quality level AQL is 4.0. 6.3 Type test should be carried out in any of the following situations: a) Trial determination and identification of new products or old products for transfer to factory production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) Regular sampling of pumps produced in batches (at least once a year), with no less than two units sampled each time; d) When the product resumes production after a long period of suspension; e) When the inspection results are significantly different from the results of the last type test; f) When the national quality supervision agency puts forward the requirements for type test. 6.4 Pump type test items include;
a) All items of factory inspection, but 6.2c) should measure the hot insulation resistance; Wei) Temperature rise test;
c) Determination of pump hydraulic characteristic curve (including: head-flow curve, head-pump unit efficiency curve); d) Determination of motor characteristic curve (including: power factor-output power curve, stator current-output power curve, and stall characteristic curve). 6.5 When new product trials and changes to sealing devices may affect sealing performance, leakage measurements of the sealing devices must be performed. 7 Marking and packaging
7.1 The material of the nameplate and the method of engraving the data on the nameplate should ensure that the writing is not easily erased during the entire service life. 7.2 The nameplate should be fixed in a conspicuous position on the pump. The items that should be indicated are as follows: a) Manufacturer's name;
b) Pump model and name;
c) Head;
d) Flow rate;
e) Water outlet diameter;
f) Matching power;
g) Rated frequency,
h) Rated voltage;
i) Rated current,
Speed;
k) Number of phases,
1) Insulation level or temperature rise
m) Manufacturer's factory number and year and month of production, n) Pump quality
p) Product standard number.
7.3 The pump should have an obvious turning mark.
JB/T 8645—1997
7.4 The words and signs on the outer wall of the packaging box should be clear and standardized. The contents are as follows: a) Name of the shipping station and manufacturer,
b) Name of the receiving station and receiving unit;
c) Pump model and factory number;
d) Net weight of the pump and gross weight with packaging:
e) Box dimensions,
f) Necessary words and drawings such as "upward", "handle with care", "afraid of heat", "afraid of freezing", and "temperature limit" should be marked on appropriate parts of the packaging box, and the drawings should comply with the provisions of GB191.
7.5 The packaging of the pump should ensure that the pump will not be damaged due to improper packaging under normal transportation conditions. The water in the water-filled pump should be drained before packaging.
7.6 Each pump should be accompanied by the following random documents and accessories: a) Packing list,
b) Product certificate;
c) Operation and maintenance instructions,
d) Necessary random accessories.
Guaranteed motor efficiency values are shown in Table A1.
JB/T 8645—1997
Appendix A
(Suggested Appendix)
Guaranteed motor efficiency valuesbZxz.net
Table A1 Guaranteed motor efficiency values
2-pole motor
n=2850r/min
4-pole motor
n=1450 r/min2. The YZW medium rubber sheath cable or the interphase performance cable specified in 4.15. The cable length shall not be less than 5m, and the specific length can also be determined by the supplier and the belt supplier in the contract. 4.15 All parts and components in the pump that bear water pressure shall be subjected to water (gas) pressure test without leakage, and the test pressure shall be 1.5 times the working pressure, but not less than 0.2MPa. After the pump is assembled, the inner cavity and sealing cavity of the motor shall be able to withstand a water (gas) pressure test lasting 3 minutes without leakage. The test pressure is 0.2 MPa for oil-filled and dry motors and 0.05 MPa for water-filled motors. 4.16 The materials of the main parts and components of the pump should be selected according to the performance of the medium to be transported and in accordance with the following regulations: a) The overcurrent parts and components (suction chamber, discharge chamber, etc.) can be made of cast iron, cast steel, etc. b) The motor rotor shaft and intermediate shaft can be made of 45 high-quality carbon steel, 40Cr alloy structural steel, etc. c) The rotor can be made of 40Cr chrome-plated or 45 steel chrome-plated; d) The stator can be made of natural rubber and nitrile rubber, etc. e) If the user has special requirements, it can be selected according to the contract requirements. 4.17 The castings selected for the pump should comply with the provisions of JB/T6880.1 and JB/T6880.2. 4.18 The pump should have a reliable grounding device and grounding wire. The grounding wire of the lead-out cable should have an obvious grounding mark, and the wire and cable mark and rotation direction should comply with the provisions of GB1971, and it should be ensured that it is not easy to be damaged during the service life of the pump. 4.19 During the inspection of the pump, the no-load current, no-load loss, stall current and stall loss of the motor shall be controlled within an appropriate range to ensure that the motor performance meets the requirements of 4.6.
4.20 When the pump is used under the specified working conditions, the dry and oil-filled pumps shall run without trouble for not less than 2000 hours; the water-filled pumps shall run without trouble for not less than 1000 hours. The life of the stator and rotor of the main hydraulic components shall not be less than 2000 hours. When tested under no-load conditions, the end point of life is when the volumetric efficiency drops to 90% value 723
.
JB/T 8645—1997
4.21 The pump shall be assembled completely and correctly. After assembly, it shall be able to rotate freely and smoothly without any jamming. The nameplate markings shall be complete, accurate and clear. There shall be no stain, bruises or cracks on the surface of the pump. 4.22 The surface of the pump housing shall be painted in accordance with the provisions of JB/T4297, and the exposed machined surface shall be painted with anti-rust paint. 4.23 Under the condition that the user complies with the transportation, storage, installation and use rules of the pump, within 12 months from the date of shipment from the manufacturer, the use period shall not exceed 6 months, if the pump is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall be responsible for replacing or repairing parts (excluding normal damage of wearing parts) or the whole machine for the user. 5 Test method
The hydraulic performance test of the pump shall be in accordance with JB/T8091, and the test of the submersible motor shall be in accordance with GB/T·12785. During the test, the pump shall be submerged in water, and the parameters of the pump shall be converted to the parameters of the pump at the specified speed based on the actual measured results. The relay length during the test is 5m. 6 Inspection rules
6.1 Each pump shall be inspected and qualified, and shall be accompanied by a product certificate before leaving the factory. 6.2 Factory inspection items:
a) Appearance inspection;
b) Determination of DC resistance of motor stator winding in actual cold state; c) Determination of cold insulation resistance of motor stator winding to housing; d) Withstand voltage test;
e) Water (air) pressure test of pump;
f) Turn-to-turn impulse withstand voltage test:
g) Determination of disconnecting speed of centrifugal switch;
h) Determination of flow rate and pump unit efficiency at specified head point; The sampling method shall be in accordance with the one-time sampling plan specified in GB2828. The general inspection level is straight, and the qualified quality level AQL is 4.0. 6.3 Type test should be carried out in any of the following situations: a) Trial determination and identification of new products or old products for transfer to factory production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) Regular sampling of pumps produced in batches (at least once a year), with no less than two units sampled each time; d) When the product resumes production after a long period of suspension; e) When the inspection results are significantly different from the results of the last type test; f) When the national quality supervision agency puts forward the requirements for type test. 6.4 Pump type test items include;
a) All items of factory inspection, but 6.2c) should measure the hot insulation resistance; Wei) Temperature rise test;
c) Determination of pump hydraulic characteristic curve (including: head-flow curve, head-pump unit efficiency curve); d) Determination of motor characteristic curve (including: power factor-output power curve, stator current-output power curve, and stall characteristic curve). 6.5 When new product trials and changes to sealing devices may affect sealing performance, leakage measurements of the sealing devices must be performed. 7 Marking and packaging
7.1 The material of the nameplate and the method of engraving the data on the nameplate should ensure that the writing is not easily erased during the entire service life. 7.2 The nameplate should be fixed in a conspicuous position on the pump. The items that should be indicated are as follows: a) Manufacturer's name;
b) Pump model and name;
c) Head;
d) Flow rate;
e) Water outlet diameter;
f) Matching power;
g) Rated frequency,
h) Rated voltage;
i) Rated current,
Speed;
k) Number of phases,
1) Insulation level or temperature rise
m) Manufacturer's factory number and year and month of production, n) Pump quality
p) Product standard number.
7.3 The pump should have an obvious turning mark.
JB/T 8645—1997
7.4 The words and signs on the outer wall of the packaging box should be clear and standardized. The contents are as follows: a) Name of the shipping station and manufacturer,
b) Name of the receiving station and receiving unit;
c) Pump model and factory number;
d) Net weight of the pump and gross weight with packaging:
e) Box dimensions,
f) Necessary words and drawings such as "upward", "handle with care", "afraid of heat", "afraid of freezing", and "temperature limit" should be marked on appropriate parts of the packaging box, and the drawings should comply with the provisions of GB191.
7.5 The packaging of the pump should ensure that the pump will not be damaged due to improper packaging under normal transportation conditions. The water in the water-filled pump should be drained before packaging.
7.6 Each pump should be accompanied by the following random documents and accessories: a) Packing list,
b) Product certificate;
c) Operation and maintenance instructions,
d) Necessary random accessories.
Guaranteed motor efficiency values are shown in Table A1.
JB/T 8645—1997
Appendix A
(Suggested Appendix)
Guaranteed motor efficiency values
Table A1 Guaranteed motor efficiency values
2-pole motor
n=2850r/min
4-pole motor
n=1450 r/min21 The pump should be assembled completely and correctly. After assembly, it should be able to rotate freely and smoothly without any jamming. The nameplate markings should be complete, accurate and clear. The pump surface should be free of stains, bumps and cracks. 4.22 The surface of the pump shell should be painted in accordance with the provisions of JB/T4297, and the exposed processed surface should be painted with anti-rust paint. 4.23 Under the condition that the user complies with the transportation, storage, installation and use rules of the pump, within 12 months from the date of shipment from the manufacturer, the use period shall not exceed 6 months, if the pump is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall be responsible for replacing or repairing parts (excluding normal damage of wearing parts) or the whole machine for the user. 5 Test method
The hydraulic performance test of the pump shall be in accordance with JB/T8091, and the test of the submersible motor shall be in accordance with GB/T·12785. During the test, the pump shall be submerged in water, and the pump parameters shall be converted to the pump parameters at the specified speed based on the actual measured results. The relay length during the test is 5m. 6 Inspection rules
6.1 Each pump shall be inspected and qualified, and shall be accompanied by a product certificate before leaving the factory. 6.2 Factory inspection items:
a) Appearance inspection;
b) Determination of the DC resistance of the motor stator winding in the actual cold state; c) Determination of the cold insulation resistance of the motor stator winding to the housing; d) Withstand voltage test;
e) Water (air) pressure test of the pump;
f) Inter-turn impulse withstand voltage test:
g) Determination of the disconnecting speed of the centrifugal switch;
h) Determination of the flow rate and pump unit efficiency at the specified head point; The sampling method shall be in accordance with the one-time sampling plan specified in GB2828, The general inspection level is straight, and the qualified quality level AQL is 4.0. 6.3 Type test should be carried out in any of the following situations: a) Trial determination and identification of new products or old products for transfer to factory production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) Regular sampling of pumps produced in batches (at least once a year), with no less than two units sampled each time; d) When the product resumes production after a long period of suspension; e) When the inspection results are significantly different from the results of the last type test; f) When the national quality supervision agency puts forward the requirements for type test. 6.4 Pump type test items include;
a) All items of factory inspection, but 6.2c) should measure the hot insulation resistance; Wei) Temperature rise test;
c) Determination of pump hydraulic characteristic curve (including: head-flow curve, head-pump unit efficiency curve); d) Determination of motor characteristic curve (including: power factor-output power curve, stator current-output power curve, and stall characteristic curve). 6.5 When new product trials and changes to sealing devices may affect sealing performance, leakage measurements of the sealing devices must be performed. 7 Marking and packaging
7.1 The material of the nameplate and the method of engraving the data on the nameplate should ensure that the writing is not easily erased during the entire service life. 7.2 The nameplate should be fixed in a conspicuous position on the pump. The items that should be indicated are as follows: a) Manufacturer's name;
b) Pump model and name;
c) Head;
d) Flow rate;
e) Water outlet diameter;
f) Matching power;
g) Rated frequency,
h) Rated voltage;
i) Rated current,
Speed;
k) Number of phases,
1) Insulation level or temperature rise
m) Manufacturer's factory number and year and month of production, n) Pump quality
p) Product standard number.
7.3 The pump should have an obvious turning mark.
JB/T 8645—1997
7.4 The words and signs on the outer wall of the packaging box should be clear and standardized. The contents are as follows: a) Name of the shipping station and manufacturer,
b) Name of the receiving station and receiving unit;
c) Pump model and factory number;
d) Net weight of the pump and gross weight with packaging:
e) Box dimensions,
f) Necessary words and drawings such as "upward", "handle with care", "afraid of heat", "afraid of freezing", and "temperature limit" should be marked on appropriate parts of the packaging box, and the drawings should comply with the provisions of GB191.
7.5 The packaging of the pump should ensure that the pump will not be damaged due to improper packaging under normal transportation conditions. The water in the water-filled pump should be drained before packaging.
7.6 Each pump should be accompanied by the following random documents and accessories: a) Packing list,
b) Product certificate;
c) Operation and maintenance instructions,
d) Necessary random accessories.
Guaranteed motor efficiency values are shown in Table A1.
JB/T 8645—1997
Appendix A
(Suggested Appendix)
Guaranteed motor efficiency values
Table A1 Guaranteed motor efficiency values
2-pole motor
n=2850r/min
4-pole motor
n=1450 r/min21 The pump should be assembled completely and correctly. After assembly, it should be able to rotate freely and smoothly without any jamming. The nameplate markings should be complete, accurate and clear. The pump surface should be free of stains, bumps and cracks. 4.22 The surface of the pump shell should be painted in accordance with the provisions of JB/T4297, and the exposed processed surface should be painted with anti-rust paint. 4.23 Under the condition that the user complies with the transportation, storage, installation and use rules of the pump, within 12 months from the date of shipment from the manufacturer, the use period shall not exceed 6 months. If the pump is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall be responsible for replacing or repairing parts (excluding normal damage of wearing parts) or the whole machine for the user. 5 Test method
The hydraulic performance test of the pump shall be in accordance with JB/T8091, and the test of the submersible motor shall be in accordance with GB/T·12785. During the test, the pump shall be submerged in water, and the parameters of the pump shall be converted to the parameters of the pump at the specified speed based on the actual measured results. The relay length during the test is 5m. 6 Inspection rules
6.1 Each pump shall be inspected and qualified, and shall be accompanied by a product certificate before leaving the factory. 6.2 Factory inspection items:
a) Appearance inspection;
b) Determination of the DC resistance of the motor stator winding in the actual cold state; c) Determination of the cold insulation resistance of the motor stator winding to the housing; d) Withstand voltage test;
e) Water (air) pressure test of the pump;
f) Inter-turn impulse withstand voltage test:
g) Determination of the disconnecting speed of the centrifugal switch;
h) Determination of the flow rate and pump unit efficiency at the specified head point; The sampling method shall be in accordance with the one-time sampling plan specified in GB2828, The general inspection level is straight, and the qualified quality level AQL is 4.0. 6.3 Type test should be carried out in any of the following situations: a) Trial determination and identification of new products or old products for transfer to factory production; b) After formal production, if there are major changes in structure, materials, and processes that may affect product performance; c) Regular sampling of pumps produced in batches (at least once a year), with no less than two units sampled each time; d) When the product resumes production after a long period of suspension; e) When the inspection results are significantly different from the results of the last type test; f) When the national quality supervision agency puts forward the requirements for type test. 6.4 Pump type test items include;
a) All items of factory inspection, but 6.2c) should measure the hot insulation resistance; Wei) Temperature rise test;
c) Determination of pump hydraulic characteristic curve (including: head-flow curve, head-pump unit efficiency curve); d) Determination of motor characteristic curve (including: power factor-output power curve, stator current-output power curve, and stall characteristic curve). 6.5 When new product trials and changes to sealing devices may affect sealing performance, leakage measurements of the sealing devices must be performed. 7 Marking and packaging
7.1 The material of the nameplate and the method of engraving the data on the nameplate should ensure that the writing is not easily erased during the entire service life. 7.2 The nameplate should be fixed in a conspicuous position on the pump. The items that should be indicated are as follows: a) Manufacturer's name;
b) Pump model and name;
c) Head;
d) Flow rate;
e) Water outlet diameter;
f) Matching power;
g) Rated frequency,
h) Rated voltage;
i) Rated current,
Speed;
k) Number of phases,
1) Insulation level or temperature rise
m) Manufacturer's factory number and year and month of production, n) Pump quality
p) Product standard number.
7.3 The pump should have an obvious turning mark.
JB/T 8645—1997
7.4 The words and signs on the outer wall of the packaging box should be clear and standardized. The contents are as follows: a) Name of the shipping station and manufacturer,
b) Name of the receiving station and receiving unit;
c) Pump model and factory number;
d) Net weight of the pump and gross weight with packaging:
e) Box dimensions,
f) Necessary words and drawings such as "upward", "handle with care", "afraid of heat", "afraid of freezing", and "temperature limit" should be marked on appropriate parts of the packaging box, and the drawings should comply with the provisions of GB191.
7.5 The packaging of the pump should ensure that the pump will not be damaged due to improper packaging under normal transportation conditions. The water in the water-filled pump should be drained before packaging.
7.6 Each pump should be accompanied by the following random documents and accessories: a) Packing list,
b) Product certificate;
c) Operation and maintenance instructions,
d) Necessary random accessories.
Guaranteed motor efficiency values are shown in Table A1.
JB/T 8645—1997
Appendix A
(Suggested Appendix)
Guaranteed motor efficiency values
Table A1 Guaranteed motor efficiency values
2-pole motor
n=2850r/min
4-pole motor
n=1450 r/min5 The packaging of the pump should ensure that the pump will not be damaged due to improper packaging under normal transportation conditions. The water in the water-filled pump should be drained before packaging.
7.6 Each pump should be accompanied by the following random documents and accessories: a) Packing list,
b) Product certificate;
c) Operation and maintenance instructions,
d) Necessary random accessories.
The guaranteed value of motor efficiency is shown in Table A1.
JB/T 8645—1997
Appendix A
(Suggestive Appendix)
Guaranteed value of motor efficiency
Table A1 Guaranteed value of motor efficiency
2-pole motor
n=2850r/min
4-pole motor
n=1450 r/min5 The packaging of the pump should ensure that the pump will not be damaged due to poor packaging under normal transportation conditions. The water in the water-filled pump should be drained before packaging.
7.6 Each pump should be accompanied by the following random documents and accessories: a) Packing list,
b) Product certificate;
c) Operation and maintenance instructions,
d) Necessary random accessories.
The guaranteed value of motor efficiency is shown in Table A1.
JB/T 8645—1997
Appendix A
(Suggestive Appendix)
Guaranteed value of motor efficiency
Table A1 Guaranteed value of motor efficiency
2-pole motor
n=2850r/min
4-pole motor
n=1450 r/min
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.