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GB/T 33625-2017 English PDF (GBT33625-2017)

GB/T 33625-2017 English PDF (GBT33625-2017)

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GB/T 33625-2017: Oil-free reciprocating air compressors on locomotives and power cars

This Standard specifies the requirements, test methods, inspection rules and marking, packaging and storage of air-cooling, single-stage, single-action, direct-drive oil-free reciprocating air compressors used on the pantograph system of locomotives and power cars.
GB/T 33625-2017
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 23.140
J 72
Oil-free Reciprocating Air Compressor
on Locomotives and Power Cars
ISSUED ON. MAY 12, 2017
IMPLEMENTED ON. DECEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
3. No action is required - Full-copy of this standard will be automatically and immediately delivered to your EMAIL address in 0~60 minutes.
Table of Contents
Foreword ... 3
1 Application Scope ... 4
2 Normative References ... 4
3 Requirements ... 5
4 Test Methods ... 7
5 Inspection Rules ... 9
6 Marking, Packaging and Storage ... 10
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of the National Standardization Technical Committee on Compressors (SAC/TC 145).
The drafting organizations of this Standard. Hefei General Machinery Research Institute, Hefei General Environment Control Technology Co., Ltd., Jiangsu Dehou Electric Co., Ltd.
The main drafters of this Standard. Zhang Chenyan, Liu Cen, Wang Shusheng, Gao Xiangjia, Zhang Jinan.
Oil-free Reciprocating Air Compressor
on Locomotives and Power Cars
1 Application Scope
This Standard specifies the requirements, test methods, inspection rules and marking, packaging and storage of air-cooling, single-stage, single-action, direct-drive oil-free reciprocating air compressors (hereinafter referred to as ?€?air compressors?€?) used on the pantograph system of locomotives and power cars.
This Standard applies to air compressors used on the pantograph system of locomotives and power cars, whose rated discharge pressure is not greater than 1.0 MPa.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition dated applies to this document. For undated references, the latest edition of the referenced documents (including all amendments) applies to this Standard.
GB/T 755, Rotating Electrical Machines ?€? Rating and Performance
GB/T 3853, Displacement Compressor ?€? Acceptance Tests
GB/T 4208, Degrees of Protection Provided by Enclosure (IP Code)
GB/T 4980, Determination of Sound Level for Noise Emitted by Displacement Compressors
GB/T 7777, Measurement and Evaluation of Mechanical Vibration of Displacement Compressors
GB/T 9438, Aluminum Alloy Castings
GB/T 9440, Malleable Iron Castings
GB/T 11021, Electrical Insulation ?€? Thermal Evaluation and Designation
GB/T 13306, Plate
GB/T 15115, Die Casting Aluminum Alloys
GB/T 15487, Methods of Flow Measurement for Displacement Compressor
GB 19153, Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Displacement Air Compressors
GB/T 21563-2008, Railway Applications ?€? Rolling Stock Equipment ?€? Shock and Vibration Tests
GB 22207, Safety Requirements of Displacement Air Compressor
JB/T 6431, Gray Iron Castings for Displacement Compressor ?€? Specification JB/T 7663.1, Packaging Technical Condition of Displacement Compressors
JB/T 7663.2, Coating Specifications for Displacement Compressors
JB/T 8934, Direct Drive Portable Reciprocating Piston Air Compressor
JB/T 9104, The Technical Specification for Spheroidal Araphite Iron Castings of Displacement Compressors
TB/T 1126, Standard Voltage for Locomotive Control and Light Circuit
3 Requirements
3.1 General requirements
3.1.1 Air compressors shall comply with this Standard; they shall be manufactured in accordance with the drawings and technical documents which are approved through specified procedures.
3.1.2 Specified operating conditions of air compressors
a) suction pressure. 0.1 MPa (absolute pressure);
b) suction temperature. 20??C;
c) suction relative humidity. 0;
d) rated discharge pressure. 0.8 MPa;
e) operating voltage. DC 110 V;
f) rotational speed. as specified in the product technical documents, expressed in r/min.
3.1.3 Air compressors shall be capable of operating normally under the following service environmental conditions.
a) the altitude not more than 2 500 m;
4.1.2 The testing of the input specific power of air compressors shall be conducted as specified in GB 19153.
4.1.3 The testing of the noise power level of air compressors shall be conducted as specified in GB/T 4980.
4.1.4 The testing of the mechanical vibration intensity of air compressors shall be conducted as specified in GB/T 7777.
4.2 Environment adaptation
4.2.1 High-temperature test
4.2.1.1 After storing air compressors for 2 h under the environmental conditions of 40??C, start the machine for continuous operation for 2 h. the operating voltage during operation is DC 110 V and the discharge pressure is the rated discharge pressure. Measure the discharge temperature of air compressors at this moment, which shall be as specified in this Standard.
4.2.1.2 Install the air compressors under the environmental conditions of 70??C which are installed inside the car body in actual use or install the air compressors under the environmental conditions of 50??C which are installed inside the car body; store for 2 h; start the machine to run continuously for 10 min. the operating voltage during operating is DC 110 V and the discharge pressure is the rated discharge pressure. Measure the discharge temperature of air compressors at this moment, which shall be as specified in this Standard.
4.2.2 Low-temperature test
After storing air compressors for 2 h under the environmental conditions of - 40??C, air compressors shall be capable of being started normally under the operating voltage of DC 77 V and operating continuously for 1 h under the rated discharge pressure. 4.2.3 High-altitude test
The test shall be conducted in areas of altitude 2 500 m or simulated in a low air pressure testing chamber in the library. The environmental pressure of the testing chamber during the simulation test is 75 kPa. The test time is 30 min; air compressors shall be capable of operating normally under the rated pressure ratio.
4.2.4 Impact and vibration test
Conduct impact and vibration test for the air compressors in accordance with the provisions for equipment class A, category 1 specified in GB/T 21563-2008. Conduct inspection for the connectors and appearance after test. Operate continuously for 2 h under the rated discharge pressure, no abnormality shall occur during operation.

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