GBJ 29-1990 Design specification for compressed air stations GBJ29-90
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Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Design Code for Compressed Air Station
GBJ29—90
1991Beijing
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National Standard of the People's Republic of China
Ancient Design Code
GBJ29—90
Editor Department: Ministry of Machinery and Electronics Industry of the People's Republic of China Approval Department: People's Republic of China Ministry of Construction of the People's Republic of China Date of implementation: March 1, 1991
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Notice on the release of the national standard
"Compressed Air Station Design Code"
(90) Jianbiaozi No. 226
According to the requirements of the National Planning Commission's Notice No. [1986] No. 250, the "Compressed Air Station Design Code" revised by the Ministry of Machinery and Electronics Industry and relevant departments has been reviewed by relevant departments. The "Compressed Air Station Design Code" GBJ29-90 is now approved as a national standard and will be implemented on March 1, 1991. The original "Compressed Air Station Design Code" TJ29-78 will be abolished at the same time.
This code is managed by the Ministry of Machinery and Electronics Industry, and its specific interpretation and other work are the responsibility of the Eighth Design Institute of the Ministry of Machinery and Electronics Industry. The publication and distribution is organized by the Standard and Quota Research Institute of the Ministry of Construction.
Ministry of Construction of the People's Republic of China
May 10, 1990
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Revision Notes
This specification is edited by the Ministry of Machinery and Electronics Industry in accordance with the requirements of the State Planning Commission's Document No. 250 [1986], and is specifically revised by the Eighth Design Institute of the Ministry of Machinery and Electronics Industry in conjunction with relevant units from the "Compressed Air Station Design Specification" TJ29-78.
During the revision process, the specification group conducted extensive investigations and studies, carefully summarized the experience in design and use since the implementation of the original specification, referred to relevant domestic and foreign materials, and conducted necessary testing. Finally, our ministry reviewed and finalized the draft together with relevant departments.
This specification is divided into nine chapters and one appendix. The main contents of this revision are: adding content related to environmental protection, energy saving, safety, etc., and adding new provisions on drying and purification of compressed air.
During the implementation of this specification, if any modification or supplement is found, please send your opinions and relevant information to the Eighth Design Institute of our Ministry, and copy it to the Construction Department of our Ministry for reference in future revisions.
Ministry of Machinery and Electronics Industry
May 1990
Engineering Construction Standard Full Text Information System
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Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Layout of Compressed Air Station
Process System·
Composition of Compressed Air Station and equipment layout
Electrical and thermal measuring instruments and protective devices Water supply and drainage
Heating and ventilation
Compressed air pipelines
Terms used in this specification
Additional explanation
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Chapter 1 General
Article 1.0.1 In order to ensure safe production, protect the environment, save energy, strive to improve working conditions, and achieve advanced technology and economic rationality in the design of compressed air stations, this specification is specially formulated.
Article 1.0.2 This specification is applicable to the design of new, rebuilt, and expanded compressed air stations and compressed air pipelines equipped with piston air compressors and screw air compressors with electric transmission, working pressure less than or equal to the gauge pressure of 0.8MPa, and single-unit exhaust volume less than or equal to 100m2/min.
For the design of the rebuilt and expanded compressed air station and compressed air pipeline, the existing buildings, structures, equipment and pipelines shall be fully utilized. This code does not apply to compressed air stations and compressed air pipelines in special places such as underground and caves.
Article 1.0.3 The design of compressed air stations and compressed air pipelines shall comply with the relevant requirements of the current national "Industrial Enterprise Design Hygiene Standards", "Architectural Design Fire Protection Code" and other standards and specifications in addition to the implementation of this code. Article 1.0.4 The compressed air station shall be classified as Class D according to the production fire hazard category. The compressed air station composed entirely of cylinder oil-free lubrication or oil-free screw air compressors shall be classified as Class E for production fire hazard. Engineering Construction Standard Full Text Information System
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Chapter II
Layout of Compressed Air Stations
Article 2.0.1 The layout of compressed air stations in factories (mines) shall be determined based on the following factors and after comparison of technical and economic plans. 1. Close to the load center,
2. Reasonable power supply and water supply,
3. Possibility of expansion;
4. Avoid being close to places that emit explosive, corrosive and toxic gases and dust and other harmful substances, and be located on the leeward side of the above places with the lowest wind frequency throughout the year; 5. The distance between the compressed air station and the places with noise and vibration protection requirements should comply with the relevant national standards and specifications. Article 2.0.2 The orientation of the compressed air station should allow good cross-hall wind between the machines and reduce western exposure.
Article 2.0.3 The compressed air station should be an independent building. When it is adjacent to or located in other buildings, it should be separated by a wall. Engineering Construction Standard Full Text Information System
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Chapter 3 Process System
Article 3.0.1 The model and number of air compressors and air supply systems of different air quality and pressure should be determined according to the air supply requirements and compressed air load after technical and economic scheme comparison. www.bzxz.net
In a compressed air station, the number of air compressors should be 3 to 6; for air supply systems of the same quality and pressure, the models of air compressors should not exceed two. Article 3.0.2 The spare capacity of the compressed air station shall meet the following requirements according to the load and system conditions:
, when the largest unit is under maintenance, the exhaust volume of the remaining units shall ensure the gas volume required for the production of the entire plant (mine), except for the allowable reduction of gas supply through deployment measures. 2. When the gas volume required for production cannot be guaranteed after deployment and equipment units are required, the air supply system with equal to or less than 5 air compressor units can add one as a backup; 3. For decentralized compressed air stations with interconnected pipelines, their spare capacity should be set uniformly;
4. For two-pressure air supply systems, the unit of the higher pressure system should be used as the backup unit of the low-pressure system;
5. For station buildings with oil and oil-free models, oil-free air compressor units should be used as backup.
Article 3.0.3 According to the dust conditions of the environment where the compressed air station is located, the air intake system of the air compressor must be equipped with corresponding effective filters or filtering devices. Article 3.0.4 The air intake of the air compressor intake system should be installed outdoors and should be protected from rain. In hot areas, the air intake of screw air compressors and piston air compressors with a speed of less than or equal to 10m/min can be installed indoors. Article 3.0.5 An aftercooler should be installed between the exhaust port of the piston air compressor and the air storage tank. It is not appropriate for each air compressor to share an aftercooler and an air storage tank. Engineering Construction Standard Full Text Information System
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Article 3.0.6 The selection of air drying devices such as refrigeration type, heatless regeneration and heating regeneration adsorption type should be determined based on the air supply system and the user's requirements for the degree of air dryness and the amount of air handled, after technical and economic comparison. When the user requires that the dry compressed air cannot be interrupted, no less than two sets of air drying devices should be selected, one of which is a spare. Article 3.0.7 When using a heatless regeneration adsorption air drying device, it is advisable to use an oil-free lubricated air compressor: When using an oil-lubricated air compressor, effective degreasing measures must be taken for the compressed air before entering the adsorption air drying device. Article 3.0.8 When the user has requirements for the dust particle size of the compressed air, a filter of corresponding precision should be installed after the air drying device, or after the air storage tank if there is no air drying device. When the gas point requires the supply of compressed air with dust particles less than 0.5um, a high-precision filter should be installed at the gas-using equipment. Except for users who require that the gas supply cannot be interrupted, compressed air filters can be omitted.
Article 3.0.Article 9 The selection of heat source for heating regeneration adsorption air drying device shall ensure the regeneration effect, facilitate maintenance and management, and save energy. When steam is used as the heat source, its temperature shall meet the adsorbent regeneration temperature requirements. Article 3.0.10 The air dry combustion device should be installed after the gas storage tank. The temperature of compressed air entering the adsorption air drying device shall not exceed 40°C. Article 3.0.11 A check valve should be installed between the piston air compressor and the gas storage tank. A vent pipe should be installed between the compressor and the check valve. A muffler should be installed on the vent pipe. A cut-off valve should not be installed between the piston air compressor and the gas storage tank. If installed, a safety valve must be installed between the compressor and the cut-off valve. A safety valve must be installed on the gas storage tank.
The selection of safety valves shall comply with the relevant provisions of the current national "Regulations on Safety Supervision of Pressure Vessels".
A cut-off valve should be installed between the gas storage tank and the gas supply main. Article 3.0.12 For the complete set of oil-injected screw air compressor units, an aftercooler should be installed between the outlet of the minimum pressure valve and the main air supply pipe, and a cut-off valve should be installed, and a vent pipe should be installed between the minimum pressure valve and the cut-off valve. Engineering 4 Construction Standard Full Text Information System
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A check valve must be installed at the casing outlet of the non-complete set of oil-free screw air compressors. A cut-off valve should be installed between the check valve and the main air supply pipe. A safety valve must be installed between the check valve and the cut-off gate, and a vent pipe should be installed. Article 3.0.13 An analytical sampling valve should be installed at the outlet of the air drying device and the filter.
Article 3.0.14 The layout of the air intake and exhaust pipes of the air compressor should reduce the impact of pipeline vibration on the building.
The pipeline between the air compressor and the aftercooler should be easy to disassemble and remove carbon deposits. Heat compensation should be considered for exhaust pipes.
In cold areas, antifreeze measures should be taken for outdoor oil and water pipes on the ground. Article 3.0.15 Compressed air stations should adopt noise reduction measures such as sound insulation, sound elimination and sound absorption on air compressor units, pipes and their buildings in accordance with the current national "Design Specifications for Noise Control in Industrial Enterprises" and "Urban Area Environmental Noise Standards". Sound insulation duty rooms, suction silencers, etc. can be set up. Article 3.0.16 Compressed air stations should be equipped with waste oil collection devices. The discharge of wastewater must comply with the provisions of the current national standards and specifications. Engineering Construction Standards Full Text Information System
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Chapter 4 Composition and Equipment Layout of Compressed Air Stations Article 4.0.1 In addition to the machine room, the compressed air station should have an auxiliary room. Its composition and area should be determined based on the scale of the compressed air station, the machine repair system and the needs of operation management, etc., on the premise of making full use of the cooperative conditions of the enterprise where it is located. Article 4.0.2 The layout of equipment and auxiliary rooms in the machine room, as well as the layout of other buildings adjacent to the machine room, should not affect the natural ventilation and lighting of the machine room. Article 4.0.3 The gas storage tank should be arranged outdoors and should be located on the north side of the machine room. The clear distance between the vertical gas storage tank and the outer wall of the machine room should not affect lighting and ventilation, and should not be less than 1.0m.
Note: When it is difficult to arrange the gas storage tank of the oil-free lubricated air compressor outdoors, it can be arranged indoors. Article 4.0.4 In the machine room in hot areas, measures should be taken to reduce heat dissipation for equipment and pipelines.
Article 4.0.5 The air compressor units in the machine room should be arranged in a single row. The width of the passage between the machines should be determined according to the needs of equipment operation, disassembly and transportation, and the clear distance should not be less than the provisions of Table 4.0.5.
Article 4.0.6 When the air drying device is installed in the compressed air station, it is declared to be placed at one end close to the auxiliary room.
Article 4.0.7 When a special maintenance area is required in a compressed air station, its area should not be larger than the area occupied and required for operation of a single largest air compressor. Article 4.0.8 Compressed air stations with a single unit exhaust volume equal to or greater than 20m/min and a total installed capacity equal to or greater than 60m/min should be equipped with lifting equipment for maintenance. Its lifting capacity should be determined according to the heaviest component of the air compressor unit. Article 4.0.9 The coupling and belt drive device of the air compressor unit must be equipped with safety protection facilities.
Article 4.0.10 When the vertical cylinder head of the air compressor is 3m above the ground, the main passage of the machine
Clear distance between the passages of the machine
Air compressor exhaust volume Q (m/min)
10Q<40
Single row arrangement
Double row arrangement
Passage between air compressor units or between air compressors and auxiliary equipment
Passage between air compressor units and walls
Distance (m)
Note: ①This table is applicable to piston air compressors, and screw air compressors are determined according to product conditions. ②When it is necessary to disassemble and assemble the nut parts of the piston rod and crosshead of the air compressor in the passage between the air compressor unit and the wall, the value of 1.5 in the table should be appropriately increased. ③ When arranging the equipment, in addition to ensuring that the piston components in the cylinder, the core in the cooler, and the rotor or stator of the motor can be pulled out during maintenance, there should be a margin of not less than 0.5m. If the spacing values listed in Table 4.0.5 or the spacing values increased according to Note ② cannot meet this requirement, they should be increased. ④ The passage for operation and maintenance of the drying device should not be less than 1.5m. Mobile or detachable maintenance platforms and escalators should be set up. The suction filter should be installed in a place that is convenient for maintenance. Platforms and escalators should be set up when necessary.
Guardrails should be installed around the maintenance platform and the synchronous motor pit. A protective net or board should be installed at the bottom of the railing.
The trench in the compressed air station should be able to drain accumulated water and should be covered with a cover plate Engineering Construction Standard Full Text Information System0m.
Note: When it is difficult to arrange the air tank of the oil-free lubricated air compressor outdoors, it can be arranged indoors. Article 4.0.4 In the machine room in hot areas, measures should be taken to reduce heat dissipation of equipment and pipelines.
Article 4.0.5 The air compressor units in the machine room should be arranged in a single row. The width of the passage between machines should be determined according to the needs of equipment operation, disassembly and transportation, and the net distance should not be less than the provisions of Table 4.0.5.
Article 4.0.6 When the air drying device is installed in the compressed air station, it is declared to be placed at one end close to the auxiliary room.
Article 4.0.7 In the compressed air station, when a special maintenance area is required, its area should not be larger than the area occupied and required for operation of a largest air compressor. Article 4.0.8 Compressed air stations with a single unit exhaust volume equal to or greater than 20m/min and a total installed capacity equal to or greater than 60m/min should be equipped with lifting equipment for maintenance. The lifting capacity should be determined according to the heaviest component of the air compressor unit. Article 4.0.9 The coupling and belt drive device of the air compressor unit must be equipped with safety protection facilities.
Article 4.0.10 When the vertical cylinder head of the air compressor is 3m above the ground, the main passage of the machine
Clear distance between the passages of the machine
Air compressor exhaust volume Q (m/min)
10Q<40
Single row arrangement
Double row arrangement
Passage between air compressor units or between air compressors and auxiliary equipment
Passage between air compressor units and walls
Distance (m)
Note: ①This table is applicable to piston air compressors, and screw air compressors are determined according to product conditions. ②When it is necessary to disassemble and assemble the nut parts of the piston rod and crosshead of the air compressor in the passage between the air compressor unit and the wall, the value of 1.5 in the table should be appropriately increased. ③ When arranging the equipment, in addition to ensuring that the piston components in the cylinder, the core in the cooler, and the rotor or stator of the motor can be pulled out during maintenance, there should be a margin of not less than 0.5m. If the spacing values listed in Table 4.0.5 or the spacing values increased according to Note ② cannot meet this requirement, they should be increased. ④ The passage for operation and maintenance of the drying device should not be less than 1.5m. Mobile or detachable maintenance platforms and escalators should be set up. The suction filter should be installed in a place that is convenient for maintenance. Platforms and escalators should be set up when necessary.
Guardrails should be installed around the maintenance platform and the synchronous motor pit. A protective net or board should be installed at the bottom of the railing.
The trench in the compressed air station should be able to drain accumulated water and should be covered with a cover plate Engineering Construction Standard Full Text Information System0m.
Note: When it is difficult to arrange the air tank of the oil-free lubricated air compressor outdoors, it can be arranged indoors. Article 4.0.4 In the machine room in hot areas, measures should be taken to reduce heat dissipation of equipment and pipelines.
Article 4.0.5 The air compressor units in the machine room should be arranged in a single row. The width of the passage between machines should be determined according to the needs of equipment operation, disassembly and transportation, and the net distance should not be less than the provisions of Table 4.0.5.
Article 4.0.6 When the air drying device is installed in the compressed air station, it is declared to be placed at one end close to the auxiliary room.
Article 4.0.7 In the compressed air station, when a special maintenance area is required, its area should not be larger than the area occupied and required for operation of a largest air compressor. Article 4.0.8 Compressed air stations with a single unit exhaust volume equal to or greater than 20m/min and a total installed capacity equal to or greater than 60m/min should be equipped with lifting equipment for maintenance. The lifting capacity should be determined according to the heaviest component of the air compressor unit. Article 4.0.9 The coupling and belt drive device of the air compressor unit must be equipped with safety protection facilities.
Article 4.0.10 When the vertical cylinder head of the air compressor is 3m above the ground, the main passage of the machine
Clear distance between the passages of the machine
Air compressor exhaust volume Q (m/min)
10Q<40
Single row arrangement
Double row arrangement
Passage between air compressor units or between air compressors and auxiliary equipment
Passage between air compressor units and walls
Distance (m)
Note: ①This table is applicable to piston air compressors, and screw air compressors are determined according to product conditions. ②When it is necessary to disassemble and assemble the nut parts of the piston rod and crosshead of the air compressor in the passage between the air compressor unit and the wall, the value of 1.5 in the table should be appropriately increased. ③ When arranging the equipment, in addition to ensuring that the piston components in the cylinder, the core in the cooler, and the rotor or stator of the motor can be pulled out during maintenance, there should be a margin of not less than 0.5m. If the spacing values listed in Table 4.0.5 or the spacing values increased according to Note ② cannot meet this requirement, they should be increased. ④ The passage for operation and maintenance of the drying device should not be less than 1.5m. Mobile or detachable maintenance platforms and escalators should be set up. The suction filter should be installed in a place that is convenient for maintenance. Platforms and escalators should be set up when necessary.
Guardrails should be installed around the maintenance platform and the synchronous motor pit. A protective net or board should be installed at the bottom of the railing.
The trench in the compressed air station should be able to drain accumulated water and should be covered with a cover plate Engineering Construction Standard Full Text Information System
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