12-1 What are the standards for the manufacture and design of screw air compressors in my country?
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12-1 What are the standards for the manufacture and design of screw air compressors in my country?

China's screw air compressor standards include energy efficiency limits, design specifications for compressed air stations, installation standards, product quality grades, safety rules, pressure vessel regulations, and energy consumption classification.
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Answer: (1) GB 19153-2003 "Energy efficiency limit values and energy saving evaluation values for positive displacement air compressors". This standard specifies the energy efficiency limit values, energy saving evaluation values, test methods and sampling methods for positive displacement air compressors (hereinafter referred to as air compressors). It is applicable to direct-connected portable reciprocating piston air compressors, micro reciprocating piston air compressors, fully oil-free reciprocating piston air compressors, general fixed reciprocating piston air compressors, general oil-injected screw air compressors, and general oil-injected sliding vane air compressors.

(2) GB 50029-2003 "Design Specifications for Compressed Air Stations". This specification was revised from GBJ 29-1990 "Design Specifications for Compressed Air Stations" by China Machinery International Engineering Design Institute (formerly the Eighth Design Institute of the Ministry of Machinery Industry) in conjunction with relevant units in accordance with the requirements of the Ministry of Construction's Construction Standard [1997] No. 108 document. During the revision process, the specification group conducted extensive investigations and research, carefully summarized the experience in design and use since the implementation of the original specification, referred to relevant domestic and foreign materials, and carried out necessary testing. After review and finalization, the Ministry of Construction issued and implemented it with Announcement No. 139.

This specification is divided into nine chapters and six appendices. The main contents of this revision are: the addition of screw compressors, compressed air drying, purification, and modifications and supplements to the contents related to environmental protection, energy saving, production safety, labor protection, etc.

(3) "Compressor Installation Standard Specification". This specification is applicable to the installation of positive displacement compressors such as reciprocating piston, screw, vane and diaphragm.

(4) JB/T 53056-1999 "General Oil-Injected Screw Air Compressors". This standard specifies the product quality grade, test method, sampling method and evaluation method of general oil-injected screw air compressors (hereinafter referred to as screw air compressors).

This standard applies to general fixed screw air compressors and their modified mobile screw air compressors with nominal exhaust pressures of 0.7, 1.0, and 1.5 MPa and rated drive motor power of 7.5 to 900 kW.

(5) GB 10892-1989 "Safety Rules and Operating Procedures for Fixed Air Compressors". This standard specifies the safety rules and operating procedures that should be followed in the design, installation, operation and maintenance of air compressors. It is applicable to general fixed or skid-mounted positive displacement air compressors (hereinafter referred to as compressors).

(6) Quality and Technical Supervision Bureau Boiler [1999] No. 154 "Safety Technical Supervision Regulations for Pressure Vessels". This regulation has played a positive role in strengthening the safety management of pressure vessels, reducing the incidence of pressure vessel accidents, especially reducing the occurrence of serious accidents and controlling the recurrence of similar accidents. The new version of the regulation has been officially implemented since January 1, 2000.

(7) JB/T 50159--1999 "Energy Consumption Classification of Compressed Air Stations". This standard specifies the energy consumption levels of compressed air stations using reciprocating piston air compressors in mechanical industrial enterprises. Compressed air stations are classified into special, first, second and third grades according to the nominal exhaust volume of the first line in cubic meters and the average power consumption per unit during the statistical period. Those that do not meet the third grade indicators are classified as out-of-grade. This standard was first issued in 1987.

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