1 Scope
This standard specifies terms and definitions, models and basic parameters, requirements, test methods, inspection rules, marking, packaging, transportation and storage of the oil injected screw air compressor for general use (hereinafter referred to as screw air compressor).
This standard is applicable to fixed and modified portable screw air compressors for general use with driver power of 2.2 kW to 630 kW and rated exhaust pressure of 0.3 MPa (0.5 MPa), 0.7 MPa (0.8 MPa), 1.0 MPa and 1.25 MPa.
Other screw air compressors with rated exhaust pressure not greater than 1.6 MPa can also refer to this standard.
This standard is not applicable to variable-frequency oil injected screw air compressors for general use.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 150 (All parts) Pressure vessels
GB 151 Tubular heat exchangers
GB/T 3480.5 Calculation of load capacity of spur and helical gears - Part 5: Strength and quality of materials
GB/T 3853-1998 Displacement compressor - Acceptance tests
GB/T 4975 Displacement compressors vocabulary－General
GB/T 4980 Determination of sound level for noise emitted by displacement compressors
GB/T 5330-2003 Industrial woven metal wire cloth (square opening series)
GB/T 6388 Transport package shipping mark
GB/T 7777 Measurement and evaluation of mechanical vibration of displacement compressors
GB/T 10095.2-008 Cylindrical gears - System of accuracy - Part 2: Definitions and allowable values of deviations relevant to radial composite deviations and runout information
GB/T 13306 Plates
GB/T 14295 Air filters
GB 19153 Minimum allowable values of energy efficiency and energy efficiency grades for displacement air compressors
GB 22207 Safety requirements of displacement air compressor
JB/T 2589 Displacement compressors - Methods for model designation
JB/T 3771 Specifications for the portable compressor chassis
JB/T 6431 Gray iron castings for displacement compressor - Specification
JB/T 6441 Safety valves for compressor
JB/T 6908 Steel forgings for displacement compressors
JB/T 7662 Displacement compressor vocabulary - Rotating compressor
JB/T 7663.1 Packaging technical condition of displacement compressors
JB/T 7663.2 Coating specifications for displacement compressors
JB/T 9104 The technical specification for spheroidal graphite iron castings of displacement compressors
NB/T 47006 Aluminum plate-fin heat exchanger
TSG R0003 Simple pressure vessels safety and technical regulations
TSG R0004 Supervision regulation on safety technology for stationary pressure vessel
TSG ZF001 Safety Technical Supervision Regulations for Safety Valves
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 4975 and JB/T 7662 apply.
4 Models and basic parameters
4.1 The model preparation of screw air compressor shall conform to JB/T 2589.
4.2 The rated exhaust pressure, nominal volume flow rate and power of the drive motor used for screw air compressor shall be as specified in Table 1.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Models and basic parameters
5 Requirements
6 Test methods
7 Inspection rules
7.1 Inspection type
7.2 Type inspection
7.3 Sampling inspection
7.4 End-of-manufacturing inspection
8 Marking, packaging and storage
Annex A (Normative) Dew point temperature map of compressed air
Annex B (Normative) Allowable eccentricity
