JB/T 8685-1998 This standard is equivalent to ISO 8012:1998 "Design and Structure Specifications and Data Sheets for Reciprocating Compressors for Process Flow". Except for the following contents, which are different from ISO 8012, the other contents of this standard are equivalent to the international standard. 1 "Reference Standard" is converted to the current standard of my country; 2 The pressure unit is changed to the statutory MPa; 3 The words unrelated to reciprocating compressors are deleted from the definition; 4 The original ISO 8012 Appendix A "Description of Conformity with the Contract" is a prompt appendix; while Appendix B "Data Sheet" is a standard appendix. When converted into the Chinese standard, according to the requirements of GB/T 1.1, the standard appendix "Data Sheet" is placed in front, and the prompt appendix "Description of Conformity with the Contract" is placed behind. This standard specifies the design and structural technical requirements for reciprocating compressors for process flow, and also specifies the requirements for documents. This standard applies to reciprocating compressors for process flow. The standard contains the minimum requirements for oil-lubricated or oil-free cylinders and crosshead compressors for conveying air or gas, but does not include requirements for mobile air compressors, diaphragm compressors and general air compressors with an absolute exhaust pressure not exceeding 1MPa. This standard also includes requirements for the compressor driver, drive equipment, lubrication system, control, instrumentation and auxiliary equipment. This standard is generally not applicable to compressors used in key process flows of refineries. This standard was first issued on March 19, 1998. JB/T 8685-1998 Design structure specification and data sheet for reciprocating compressors for process flows JB/T8685-1998 standard download decompression password: www.bzxz.net

ICS.23.140
Machinery Industry Standard of the People's Republic of China
JB/T 8685-1998
eqyIso8012:1988
Reciprocating compressors for the process industryReciprocating typesSpecifications and data shectsfor their dcsignand construction1998-03-19 Issued by
Ministry of Machinery Industry of the People's Republic of China
1998-07-01 Implementation
JB/T8685—1999
ESO Foreword
1 Specification
Application Area
Cited Standards
Basic Requirements
Compressors
Drivers and Transmission Equipment
Auxiliary Equipment
Control and Setting
Source (Standard)
Appendix B (Appendix for reference)
Data Sheet
Instructions for Conformity with the Company
JB.T8685—1998|| tt||This standard is equivalent to 1508012:1988 "Design Structure Specification and Data Sheet for Reciprocating Compressors of Lower Technical Grade" This standard has the following contents which are different from [S08]2, except that the other contents are the same as those of the international standard. (1) "Used standard" is converted to the current standard: (2) The unit of stopping force is changed to MPa: (3) The word "compressor" in the definition is deleted: (4) Appendix A "Explanation of the Contract" of ISO9012 is the appendix of the standard, while Appendix "Data Sheet" is the appendix of the standard. When converted to the same standard, according to the requirements of BT1.1, the appendix "Data Sheet" of the standard is placed in front, and the missing information is placed at the end.
This standard shall be implemented from January 1998. The appendix of the technical standard is the appendix of the standard, and Appendix B of this standard is the appendix of the specification.
This standard was proposed by the National Technical Committee for Compressed Air Compression Equipment and was drafted by Shanghai Compressor Co., Ltd. This standard was drafted by: Guan Dan, Mei Liangshi, Lu Peiming, and Chuan Xiaoling. JBT8685-1998
TSO (National Standards Organization) is a worldwide federation of standardization bodies (150 member bodies) that prepares international standards. The work of TSO is usually completed by the technical committees of the TSO. All members are interested in the purpose of a technical committee and have the right to join the committee. In terms of technical standardization, TSO maintains a close cooperative relationship with the International Committee (IEC). The draft international standards are submitted to the member bodies for voting by the technical committees. , must obtain at least 75% of the votes of the members of the same body, can be formally adopted as the main international standard: International Standard 1S0012 [FJSUI118 Compressor, Pneumatic and Gas Seal Machinery Technical Committee Development should be noted, unless otherwise stated!, All international standards are constantly revised, and any international standard referenced by them refers to the latest version,
■ Scope
Machinery Industry Standards of the People's Republic of China
Reciprocating Compressors for Process Flow
Design Structure Specifications and Data Sheets
Cobijpressor fur th praeess industry—Reciprucatingtypes.-Specieations and dalu sheelsfor their desigo and cpnstrucllonJB/T8685—1996
eQ1508012:1988
standard defines the design and structural technical requirements of reciprocating hydraulic machines in Sichuan, and also stipulates the requirements for parts. 2 Application areas
This standard is applicable to the following process reciprocating sewing machines. The standard includes the minimum requirements for conveying air or gas with lubrication or oil-free lubrication, usually with a crosshead: low pressure compressors, including mobile air compressors, diaphragm compressors and the first gas pressure The requirements for air-generating machines shall not exceed "MPa".
The standard also includes the requirements for non-compressed compressors, actuating equipment, lubrication systems, controls, instruments and auxiliary equipment, and non-standard "key process compressors". 3 Cited standards
The texts contained in the following standards become the provisions of this standard through reference in this standard. This standard is published and the services shown are valid: All standards will be revised according to the plan. All parties using this standard should explore the possibility of discontinuing the latest version of the following standards. GE/1 786.1...1997
GB/T 2625—1981
GB3:00-1993
GD 3836.11983
GB 3B36.2--1983
83836.3---1983
G8 3836.4198 3
0B 3836.51987
GB/T 4980—:98s
GR/T1J0211989
JB/T76651995
Unit system
Pneumatic shape symbols
Test and control process theft graphic symbols and document codes and international unit system and its application
Explosion-proof electrical equipment for explosive environments, explosion-proof electrical equipment for explosive environments, explosion-proof electrical equipment for explosive environments, isolation type gas equipment, "d you explosion-proof electrical equipment for explosive environments, increased safety type sound gas equipment, various "" standards, flame-proof electrical equipment for explosive environments, capital needs to be equipped with full-type circuits and electrical Equipment: Explosion-proof electrical equipment for explosive atmospheres\Type electrical equipment "P" Positive displacement compressor acceptance test
Determination of noise sound power level of positive displacement compressors Process
Evaluation and classification of heat resistance of electrical insulation
General purpose machine noise power level Field determination of sound intensity method This standard uses ST units throughout (for international units, see GB31U Approved by the Ministry of Machinery Industry of the People's Republic of China on March 10, 1998 and implemented on July 1, 1998
JB/T8685-1998
Except S1 In addition to the unit system, this standard also uses some non-51 units, these units are: Capacitance: L11-10-m
Time: mi (min60s)
Time: h(-3.6[0's]
Speed: rimu(lrimin-
5 Specifications
5.1 General
s..1 Oil-free, T-type compressor
ral'sh
Compression stroke compressor that is not contaminated by lubricating oil or other components. 5.1.2 Oil-free, painted compressor
A compressor in which the cylinder is sprayed with cooling gas, the cylinder wall and the sealing device are free from overflow. 5.1.3 Oil suction, compressor!
The oil in the compression chamber is continuously humidified. After the oil and gas leave the compressor, the warm air is separated from the air or gas.
5.1.4 Standard suction and exhaust positions The suction and exhaust positions on the compressor are considered representative. If the supplier provides general reductions in the labor distribution of the goods, other responsibilities: the definition of the gas position and its mutual gas position shall be agreed upon separately. 5.1.5 Volumetric compressor filling volume
The volume swept by the first stage compression element of the compressor in one revolution 5.1.6 Volumetric compressor volumetric flow
The volume swept by the first stage compression element of the compressor in a unit time 5.1.? Residual air volume
The volume of the compressed acid occupied by the gas at the end of the cycle: 5.1.8 Relative clearance volume
The residual volume of the class! 5.1.9 Layout diagram
Use reference numbers to indicate the main components (such as compressor body, air filter, intermediate cooling, gearbox and coupling): the relative position of the simplified diagram. See the figure e
5.1.10 Connecting rod load
The force generated by the pressure difference acting on the piston end face and transmitted through the connecting rod. 5.1.11 Allowable connecting rod load
The maximum daily connecting rod load allowed for continuous operation 5.1.12 Avoid cold rod filling two
environment box directly with liquid cooling rod filling box. 2
The monitored compressor
, C-gas
G, H intercooler
11 group intake main
K, 0-suction and buffer
,, gas stage
M-2 stage air main pipe
Q-suction load up
Typical -stage compressor
EF] stage cylinder
5. 2 Leli
5. 2. 1 Table bed, hall
The pressure measured with atmospheric pressure as the seasonal point
Time: The pressure measured in this standard clothing is the annual force: 5.2.2 Absolute pressure method
JB/18695-1998
National cloth merchant Figure two examples
real device and real machine
R Feineng
K·Low speed coupling
T—speed gear device
A high-speed joint
V second source engine
Just take the seasonal point as the unique average pressure. Equal to the air, the static pressure will generate the force and 5.2.3 static pressure
Under the condition of the fluid flow, the unique fluid transport capacity. 5.2.4
The name of static force and dynamic pressure
J9/T8685-1999
It indicates the force after the kinetic energy of the fluid is converted into pressure energy without loss. In a static state, the static pressure of the fluid is equal to the value of the static pressure of the fluid.
3.2.5 The absolute average force of the gas in the standard suction position. Note: When the flow rate and range of the gas are very low, the relative pressure can be used to represent the relative force. 5.2.6 Exhaust pressure
The absolute average force of the gas in the standard exhaust position. : When the gas is close to the When the temperature is low enough: the absolute maximum pressure can be exceeded. 5.2.7 The rated exhaust pressure H is the maximum exhaust pressure required by the expected operating conditions specified in the application. 5.2.8 The maximum pressure that the designed components can safely withstand. 5.2.9 The maximum allowable operating pressure 1. The compressor or the parts of this standard (such as a separate level, when the compressor is operated under the specified conditions and the gas is compressed, the maximum operating pressure allowed by the supplier's design. 5.2.10 Safety cabinet set pressure The lower opening pressure on the air inlet side of the safety valve. Note: For differential pressure safety rooms, the set pressure refers to the positive square difference of the safety valve that can pass through the safety limit when the room is open, divided by the exhaust pressure: 5. 3 Temperature
5.3.1 Suction temperature
The full temperature of the compressor in the standard suction position. 5.3.2 Discharge temperature
The full temperature of the compressor in the standard scavenging position. 5.3.3 Discharge temperature
The maximum operating temperature,
5.3.4 High allowable operating temperature
The maximum allowable gas temperature when the compressor is operated or used under the specified operating conditions. 5.3. 5 Design temperature
The maximum temperature that the designed compressor can safely withstand. Design temperature includes body temperature, coolant temperature and ambient temperature. 5.3.1 Maximum designed exhaust temperature
The maximum expected operating temperature under any specified operating conditions [including partial load operation;] 5.4 Flow rate
5.4.1 Actual flow rate of compressor! Also known as actual static air volume] The actual volume flow rate of the gas compressed by the compressor at the standard exhaust position should be converted to the full temperature, full pressure and humidity (such as humidity) of the standard suction position. 5.4.2 Standard volume flow rate (standard transmission gas) 4
3B/T86851998
The actual volume flow rate of the gas compressed by the compressor at the standard exhaust position should be converted to the standard conditions (temperature and humidity). 5.4.3 Intake gas The maximum power required to compress the gas or mixture from a given suction pressure to a given exhaust gas shape in a standard suction compressor according to the selected reference process. 5.5.2 Coupling power of the motor The maximum power required to push the motor to the maximum position. When a gear or pulley drive is used as the preferred mode, the power should include these external transmission losses. 5.5.3 The power required to compress the crankshaft of the compressor is equal to the sum of the internal and external transmission losses. Unless otherwise specified, the power of external transmission (such as output and non-transmission) losses is not included. 5.6 Required specific energy
5.6.1 Required specific energy
Ratio of compressor shaft power to actual volume flow. 5.7 Speed
5.7.1 Compressor speed
Output shaft rotation speed
5.7.2 Uneven output shaft speed
In a specific operation cycle, the difference between the instantaneous maximum and minimum output speeds is divided by the average arithmetic displacement of the selected unit, and the resulting value is:
=2 × mnx.men
Paax+Fmin
Where: n is the rotation speed of the compressor, rmins
5.7.3 Average speed
Linear speed. The following formula is used to determine the average speed of the air intake or exhaust valve:
average speed of the air intake or exhaust valve, m/s;
Formula: Ch
5—operation, m:
a crankshaft speed, /min,
5.7.4 Valve continuity
The semi-average gas flow through any intake or exhaust valve group. os
speed, m
H rate surface, m\
a valve opening area, m;
cn—average speed of the air intake or exhaust valve. m/s~
JB/T8685-1998
The valve opening area should be equal to the product of the sum of the opening circumferences of the corresponding intake or exhaust valves at the cylinder end and the valve lift height! 5.7.5 Compressor rating or pressure
The compressor speed required to meet the specified operating conditions. 5.7.6 Minimum allowable compressor speed
The minimum compressor speed for continuous operation. 5.7.7 Maximum allowable compressor speed
The compressor speed for continuous operation. 5.8 Operating point
5.8.1 Standard operating point
A certain operating point of the compressor specified in the data sheet. 5.8.2 Normal operating point
The expected standard operating point of the compressor. 5.8.3 Specified operating point
The specified operating point specified by the user. The performance test data at this point must be obtained. 5.9 Plate
5.9.1 Base
A typical base plate or tree supporting a machine (such as a compressor, gearbox or plate motor). 5.9.2 Common foundation
A room or structure supporting more than one machine (e.g., compressor, gearbox, or low-speed engine). 5.93 Bottom
A floor or structure supporting one or more foundations. 5.9.4 A pad or support beneath a machine supporting the machine.
5.9.5 Guide rail
Located under the compressor body, it is used to support the movable base of the compressor. 6 Basic requirements
6.1 Generalbzxz.net
6.1.! If the enterprise standard conflicts with the inquiry form or order form, the data in the order form shall prevail. The order form shall include the data sheet of the expansion specifications. 6.1.2 All the subordinate documents in the price inquiry form, proposal or order form are property certificates, and shall not be disclosed to the two parties unless it is for the purpose of implementing the proposal or contract.
6.1.3 Unless otherwise specified in another document, the approval of the document (such as the system) cannot be used to deviate from the required base in the order form. This approval does not apply to the support of the combination. G
JB/T8685-1998
6.1.4 For the budget proposal, a simple 6.2 Price list
6.2.1 The user shall provide as complete data as possible, give the possible and specified part of the requirements and account for the known changes in working conditions, and at the same time make a decision on the options or requirements provided in this bid, and give the funds and other measures required for the supplier to prepare a follow-up proposal.
6.2.2 The user shall specify the relevant design and delivery regulations that he hopes to be followed and the implementation of exceptions or objections to these regulations. 6.2.3 The user shall indicate in the data sheet that he hopes to include the main parts in the proposal. 6.3 Proposal
6.3.1 The supplier's internal construction shall include the active data sheet and be improved according to the user's specified cost and the applicable ratio of the machine. If necessary, the characteristics of the new and modified equipment shall be further clearly explained. 63.2 Unless otherwise specified in the enquiry, the supplier shall only quote for the items listed in II.2.1 and shall supply equipment in accordance with its own standards:
3.3 Proposal statement to state the time required from the effective date of the contract to the date of shipment. 6.3.4 The supplier shall specify the flow control system and scope of supply for the press. 6.3.5 Note that all equipment in the proposal shall not conform to the applicable technical specifications and may differ from the applicable technical specifications. Differences may include the design of the drying rate. 6.4 Rated value
6.4.1 Setting value
a) The rated deviation of the compressor shall be within (-6)% of the rated value specified in the data sheet: For some parts (such as load-bearing, the original medium can have a larger false error. b) The specific energy deviation at the rated point specified in the data sheet shall not exceed 6% of the rated value, but the external transmission failure such as gear device shall be indicated in the data sheet.
Test procedure G3T8 [See Appendix B (Appendix 6.5 Noise limit
.S.1 Shangfang has restrictions on the noise radiation level of compressors and auxiliary equipment in the air, which will be explained when inquiring. When the user makes a request to the supplier, the supplier will take into account the factory's current operating noise characteristics. The supplier will not bear the costs caused by the user's necessary components being imperfect.
6.5.3 The supplier will specify the maximum allowable A-weighted sound level of the corresponding frequency band of the compressor and auxiliary equipment in the price list, with 10-w as the standard decibel value.
The supplier will specify the main equipment to be supplied. 6.5.3 The measurement method and data processing shall be in accordance with the provisions of G/74980 or JB.T7665. The scope of on-site production test shall be agreed upon by the user and the supplier and stated in the data sheet. The noise level of the machine room is determined by the power requirements of the installed machines and the sustainability of the machine room. It is impossible for the supplier to predict the current frequency. 6.5.4 When it is mandatory to comply with the noise limit, in addition to the normal cost of the equipment, the supplier shall provide a noise reduction system. 6.5.5 If the user is to equip the silencer to avoid these noise limits, the supplier shall indicate the noise level of the equipment it supplies. JB/T868S--1998
6.5.6 The silencer and valve shall be installed at the corresponding positions in the pipe system, and the compressor shall be able to avoid undesirable noise under any operating conditions. This shall be agreed upon by the supplier and the user. 6.5.7 Any special noise measurement plan shall be carried out according to the agreement between the supplier and the user. 1 General Principles
The compressor, driver and accessory equipment should be designed to operate continuously under specified conditions and to respond quickly to necessary maintenance, especially the compressor and valves.
2 Maintenance Intervals
The maintenance intervals specified below apply to the entire compressor unit including the driver and accessory equipment: The maintenance intervals are divided into five categories: Maintenance interval refers to a period of time during which no special person is required to perform maintenance on the compressor and its accessory equipment (such as adding lubricating oil and draining condensate). The operation procedures of various maintenance procedures are as follows: Instructions. Maintenance intervals can be divided into 1, 4, 24 hours. It is believed that the above routine maintenance intervals are unnecessary. The maintenance intervals shall be specified in the product flow and the supplier's operating instructions. The temperature and pressure inspections shall be carried out regularly after a long period of operation, which is not within the scope of maintenance. 7.3 Allowable speed The shaft rotation speed and the average piston speed shall be determined so that the compressor can run well within the required operating conditions within a suitable range within the process requirements. The supplier shall indicate the average piston speed in the data sheet: the supplier shall indicate the maximum and minimum typical speeds in the operating instructions. The standard stipulates the maximum speed and average speed, because they do not depend on the design of the compressor, but on the type of compressor used, that is, the type of pressure gas, lubrication conditions, opening and closing, etc. If the user considers it necessary to determine the maximum allowable speed based on experience, the technical requirements of the inquiry form and order form may be listed as follows: 7.4 Maximum allowable operating temperature 1.
Under all specified operating conditions, the maximum expected temperature drop must be determined to ensure reliable operation. The maximum temperature limit depends on the type of gas, lubricating oil, component material and compressor equipment. This standard does not make detailed regulations on the maximum allowable operating temperature. Users should inform suppliers of the effective laws and regulations of their country and specify the temperature limit according to user requirements or calculation based on experience. This becomes the user's regulations.
.5 Live rod load
The actual live rod load is calculated based on the setting value of the safety valve of each stage, the positive belt suction pressure of each stage and taking into account the partial load operation. The actual live rod load shall not exceed the allowable load of the live rod. 6 Torsional vibration and uneven speed
7.6.1 Torsional vibration
The power supplier is responsible for ensuring that the entire machine and transmission equipment of the compressor are not affected by dangerous torsional vibrations within its operating range. In addition to belt drives, the above provisions also apply to platforms where the power supplier does not supply the drive motor and (or) special driving equipment. In case of fuel injection, when the reciprocating prime mover of the compressor is not provided by the supplier, the prime mover manufacturer is responsible. If the torsional vibration calculation results indicate that the drive components need to be modified, and the components are not within the scope of supply of the supplier, the cost of the modification shall be 83 Allowable speed
The shaft speed and piston average speed should be determined so that the compressor can run well under the required operating conditions within the appropriate cycle and within the process requirements. The supplier should indicate the maximum and minimum allowable speeds in the operating instructions. The standard stipulates the maximum allowable speed and the average speed, because they do not depend on the design of the compressor, but on the type of gas, lubricating oil, compressor material and compressor equipment. If the user considers it necessary to determine the maximum allowable speed based on experience, the technical requirements of the inquiry form and order form are as follows: 7.4 Maximum allowable operating temperature 1.
Under all specified operating conditions, the maximum expected temperature drop must be determined to ensure reliable operation. The maximum temperature limit depends on the type of gas, lubricating oil, compressor material and compressor equipment. This standard does not make detailed regulations on the maximum allowable operating temperature. Users should inform suppliers of the effective laws and regulations of their country and specify the temperature limit according to user requirements or calculation based on experience. This becomes the user's regulations.
.5 Live rod load
The actual live rod load is calculated based on the setting value of the safety valve of each stage, the positive belt suction pressure of each stage and taking into account the partial load operation. The actual live rod load shall not exceed the allowable load of the live rod. 6 Torsional vibration and uneven speed
7.6.1 Torsional vibration
The power supplier is responsible for ensuring that the entire machine and transmission equipment of the compressor are not affected by dangerous torsional vibrations within its operating range. In addition to belt drives, the above provisions also apply to platforms where the power supplier does not supply the drive motor and (or) special driving equipment. In case of fuel injection, when the reciprocating prime mover of the compressor is not provided by the supplier, the prime mover manufacturer is responsible. If the torsional vibration calculation results indicate that the drive components need to be modified, and the components are not within the scope of supply of the supplier, the cost of the modification shall be 83 Allowable speed
The shaft speed and piston average speed should be determined so that the compressor can run well under the required operating conditions within the appropriate cycle and within the process requirements. The supplier should indicate the maximum and minimum allowable speeds in the operating instructions. The standard stipulates the maximum speed and average speed, because they do not depend on the design of the compressor, but on the type of compressor used, that is, the type of pressure gas, lubrication conditions, opening and closing, etc. If the user considers it necessary to determine the maximum allowable speed based on experience, the technical requirements of the inquiry form and order form may be listed as follows: 7.4 Maximum allowable operating temperature 1.
Under all specified operating conditions, the maximum expected temperature drop must be determined to ensure reliable operation. The maximum temperature limit depends on the type of gas, lubricating oil, component material and compressor equipment. This standard does not make detailed regulations on the maximum allowable operating temperature. Users should inform suppliers of the effective laws and regulations of their country and specify the temperature limit according to user requirements or calculation based on experience. This becomes the user's regulations.
.5 Live rod load
The actual live rod load is calculated based on the setting value of the safety valve of each stage, the positive belt suction pressure of each stage and taking into account the partial load operation. The actual live rod load shall not exceed the allowable load of the live rod. 6 Torsional vibration and uneven speed
7.6.1 Torsional vibration
The power supplier is responsible for ensuring that the entire machine and transmission equipment of the compressor are not affected by dangerous torsional vibrations within its operating range. In addition to belt drives, the above provisions also apply to platforms where the power supplier does not supply the drive motor and (or) special driving equipment. In case of fuel injection, when the reciprocating prime mover of the compressor is not provided by the supplier, the prime mover manufacturer is responsible. If the torsional vibration calculation results indicate that the drive components need to be modified, and the components are not within the scope of supply of the supplier, the cost of the modification shall be 8
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.