This standard specifies types and basic parameters, specifications, test methods, inspection rules, guarantee, marking, packaging, transportation and storage of water ring vacuum pumps and compressors (hereinafter referred to as "pumps").
This standard is applicable to water ring vacuum pumps and compressors for suction or transportation of gas free of solid particles, insoluble in water, of temperature generally form -10℃ to 40℃.
Liquid ring pumps use non-aqueous liquid as working solution may made reference to this standard.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 1348 Spheroidal Graphite Iron Castings
GB/T 2100 Corrosion-resistant Steel Castings for General Applications (GB/T 2100-2002, eqv ISO 11972:1998)
GB/T 4662 Rolling Bearings — Static Load Ratings (GB/T 4662-2003, ISO 76:1987; ISO 76:1987/AMD.1:1999, IDT)
GB/T 4879 Rustproof Packaging
GB/T 6391 Rolling Bearings — Dynamic Load Ratings and Rating Life (GB/T 6391-2003, ISO 281:1990; ISO 281:1990/AMD.1:2000; ISO 281:1990/AMD.2:2000, IDT)
GB/T 9239.1-2006 Mechanical Vibration — Balance Quality Requirements for Rotors in a Constant (Rigid) State — Part 1: Specification and Verification of Balance Tolerances (ISO 1940-1:2003, IDT)
GB/T 9439 Grey Iron Castings
GB/T 11352 Carbon Steel Castings for General Engineering Purposes (GB/T 11352-1989, neq ISO 3755:1991)
GB/T 13306 Plates
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB/T 13929 Methods of Testing for Water-ring Vacuum Pumps and Compressors
JB/T 4127.1 Specification for Mechanical Seals
JB/T 4127.3 Technical Requirement on Product Reception of Mechanical Seal
JB/T 4297 Painting Specification for Pumps
JB/T 8097 Methods of Measuring and Evaluating Vibration of Pumps
JB/T 8098 Methods of Measuring and Evaluating Noise of Pumps
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1 suction capacity
Suction capacity of water ring vacuum pump refers to the gas volume, in m3/min, get through the pump inlet within unit time, at specified degree of vacuum of the inlet and outlet atmospheric pressure of 1013.25 hPa
