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Position: Chinese Standard in English/JB/T 7255-2007
JB/T 7255-2007   Water ring vacuum pumps and compressors (English Version)
Standard No.: JB/T 7255-2007 Status:superseded remind me the status change

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Language:English File Format:PDF
Word Count: 5000 words Price(USD):120.0 remind me the price change

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Implemented on:2008-2-1 Delivery: via email in 1 business day
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Standard No.: JB/T 7255-2007
English Name: Water ring vacuum pumps and compressors
Chinese Name: 水环真空泵和水环压缩机
Chinese Classification: J71    Pump
Professional Classification: JB    Professional Standard - Machinery
Issued by: NDRC
Issued on: 2007-8-28
Implemented on: 2008-2-1
Status: superseded
Superseded by:JB/T 7255-2020 Water ring vacuum pumps and compressors
Superseded on:2021-4-1
Superseding:JB/T 7255-1994
Language: English
File Format: PDF
Word Count: 5000 words
Price(USD): 120.0
Delivery: via email in 1 business day
1 Scope 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
Contents Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Types and Basic Parameters 4.1 Types 4.2 Basic parameters 5 Specifications 5.1 Performance 5.2 Driver 5.4 Critical speed 5.5 Balance 5.6 Vibration 5.7 Noise 5.8 Pressure parts 5.9 External force and torque of inlet and outlet 5.10 Inlet and outlet flanges 5.11 Cover plate (or side cover) and distributor for air suction and discharge 5.12 Impeller 5.13 Shaft and shaft sleeve 5.14 Assembly of shaft sleeve 5.15 Bearing 5.16 Shaft seal 5.17 Coupling 5.18 Foundation 5.19 Materials 5.20 Castings quality 6 Test Methods 6.1 Chemical analysis and mechanical property test of materials 6.2 Hydraulic test 6.3 Performance test 6.4 Vibration measurement 6.5 Noise measurement 6.6 Balance test 7 Inspection Rules 7.1 Type inspection 7.2 Delivery inspection 8 Guarantee 9 Marking, Packaging, Transportation and Storage 9.1 Marking 9.2 Packaging and transportation 9.3 Storage Table 1 Basic Parameters of Single Stage Water Ring Vacuum Pumps Table 2 Basic Parameters of Two Stage Water Ring Vacuum Pumps Table 3 Basic Parameters of Single Stage Water Ring Compressors Table 4 Basic Parameters of Two Stage Water Ring Compressors
Referred in JB/T 7255-2007:
*GB/T 1348-2019 Spheroidal graphite iron castings
*GB/T 2100-2017 Corrosion-resistanst steel castings for general applications
*GB/T 4662-2012 Rolling bearings - Static load ratings
*GB/T 4879-2016 Rustproof packaging
*GB/T 6391-2010 Rolling bearings—Dynamic load ratings and rating life
*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
*GB/T 9439-2010 Grey Iron Castings
*GB/T 11352-2009 Carbon steel castings for general engineering purpose
*GB/T 13306-2011 Plate
*GB/T 13384-2008 General specifications for packing of mechanical and electrical product
*GB/T 13929-2010 Methods of testing for water-ring vacuum pumps and compressors
*JB/T 4127.1-2013 Mechanical Seal - Part1: Specification
*JB/T 4127.3-2011 Mechanical seal — Part 3:Product acceptance specification
*JB/T 4297-2021
*JB/T 8097-1999 Methods of measuring and evaluating vibration of pumps
*JB/T 8098-1999 Methods of measuring and evaluating noise of pumps
JB/T 7255-2007 is referred in:
* NB/T 47005-2009(JB/T Plate Evaporator Device
Code of China
Standard
JB/T 7255-2007  Water ring vacuum pumps and compressors (English Version)
Standard No.JB/T 7255-2007
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count5000 words
Price(USD)120.0
Implemented on2008-2-1
Deliveryvia email in 1 business day
Detail of JB/T 7255-2007
Standard No.
JB/T 7255-2007
English Name
Water ring vacuum pumps and compressors
Chinese Name
水环真空泵和水环压缩机
Chinese Classification
J71
Professional Classification
JB
ICS Classification
Issued by
NDRC
Issued on
2007-8-28
Implemented on
2008-2-1
Status
superseded
Superseded by
JB/T 7255-2020 Water ring vacuum pumps and compressors
Superseded on
2021-4-1
Abolished on
Superseding
JB/T 7255-1994
Language
English
File Format
PDF
Word Count
5000 words
Price(USD)
120.0
Keywords
JB/T 7255-2007, JB 7255-2007, JBT 7255-2007, JB/T7255-2007, JB/T 7255, JB/T7255, JB7255-2007, JB 7255, JB7255, JBT7255-2007, JBT 7255, JBT7255
Introduction of JB/T 7255-2007
1 Scope 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
Contents of JB/T 7255-2007
Contents Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Types and Basic Parameters 4.1 Types 4.2 Basic parameters 5 Specifications 5.1 Performance 5.2 Driver 5.4 Critical speed 5.5 Balance 5.6 Vibration 5.7 Noise 5.8 Pressure parts 5.9 External force and torque of inlet and outlet 5.10 Inlet and outlet flanges 5.11 Cover plate (or side cover) and distributor for air suction and discharge 5.12 Impeller 5.13 Shaft and shaft sleeve 5.14 Assembly of shaft sleeve 5.15 Bearing 5.16 Shaft seal 5.17 Coupling 5.18 Foundation 5.19 Materials 5.20 Castings quality 6 Test Methods 6.1 Chemical analysis and mechanical property test of materials 6.2 Hydraulic test 6.3 Performance test 6.4 Vibration measurement 6.5 Noise measurement 6.6 Balance test 7 Inspection Rules 7.1 Type inspection 7.2 Delivery inspection 8 Guarantee 9 Marking, Packaging, Transportation and Storage 9.1 Marking 9.2 Packaging and transportation 9.3 Storage Table 1 Basic Parameters of Single Stage Water Ring Vacuum Pumps Table 2 Basic Parameters of Two Stage Water Ring Vacuum Pumps Table 3 Basic Parameters of Single Stage Water Ring Compressors Table 4 Basic Parameters of Two Stage Water Ring Compressors
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