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GB/T 41850.8-2022Mechanical vibration - Measurement and evaluation of machine vibration - Part 8: Reciprocating compressor systems (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 12, 2022

Implementation date

October 12, 2022

Scope

GB/T 41850.8-2022 (Mechanical vibration - Measurement and evaluation of machine vibration - Part 8: Reciprocating compressor systems) is available as an English-translated PDF.

GB/T 41850.8-2022 is the Chinese standard "Mechanical vibration - Measurement and evaluation of machine vibration - Part 8: Reciprocating compressor systems". Its scope clause reads: This document establishes procedures and guidelines for the measurement and classification of mechanical vibration in reciprocating compressor systems.

The defined vibration value is mainly used for Vibration staging of compressor systems and avoidance of reciprocating compressor system components (foundation, compressor, dampers, piping and Fatigue problems of accessory equipment of the system).

Shaft vibration is not considered. This document applies to rigidly mounted reciprocating compressor systems with a rated speed of 120r/min~1800r/min. proposed overall The evaluation criteria are related to the measurement method used.

This document is also used to evaluate whether the vibration of the machine has any effect on the equipment directly mounted on the machine. Adverse effects such as pulsation dampers and piping systems.

Note. The criteria presented in this document can also be used for reciprocating compressors other than the specified speed, but in this case different evaluation criteria may be used.

For machines driving reciprocating compressors, compliance with ISO 10816, other parts of ISO 20816 or other relevant standards will be and grading to evaluate.

This document does not include drivers. The application of this document is limited when considering the effects of internal parts of the machine, such as valves, pistons, piston rings, etc. may be detected from measurements.

The identification of such problems may require research into diagnostic techniques, which are beyond the scope of this document.

Reciprocating compressor systems to which this document applies include. ---Horizontal, vertical, V-type, W-type, L-type compressors; --- Fixed speed and variable speed compressors; --- Compressors driven by electric motors, gas engines, diesel engines and steam turbines, with or without gearboxes, flexible or rigid couplings connector; --- Oil-free and oil-lubricated reciprocating compressors.

This document does not apply to ultra-high pressure compressors. This document does not apply to condition monitoring, nor is noise within the scope of this document. Its clauses include terms and definitions.

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Document preview — GB/T 41850.8-2022

National Standard of the People's Republic of China

ICS: 17.160
Classification: J 04

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Vibration measurement
4.1 Measurement method
4.2 Measuring instruments and measuring quantities
4.3 Measuring position and measuring direction
4.4 Operating conditions
4.5 Recording of measurement results
5 Vibration Evaluation Criteria
5.1 Measurements
5.2 Evaluation area
5.3 Acceptable recommended value of total vibration value (2Hz~1000Hz)
Appendix A (Normative) Measurement Information Requirements
Appendix B (informative) Curve of limit value of total vibration velocity value
Appendix C (Informative) Measurement of Vibration Values on Crosshead Slides
Appendix D (Informative) RMS, Peak and Crest Factor
Appendix E (normative) Small Bore Connection (SBC)

1 Scope

This document establishes procedures and guidelines for the measurement and classification of mechanical vibration in reciprocating compressor systems. The defined vibration value is mainly used for

Vibration staging of compressor systems and avoidance of reciprocating compressor system components (foundation, compressor, dampers, piping and

Fatigue problems of accessory equipment of the system). Shaft vibration is not considered.

This document applies to rigidly mounted reciprocating compressor systems with a rated speed of 120r/min~1800r/min. proposed overall

The evaluation criteria are related to the measurement method used. This document is also used to evaluate whether the vibration of the machine has any effect on the equipment directly mounted on the machine.

Adverse effects such as pulsation dampers and piping systems.

Note. The criteria presented in this document can also be used for reciprocating compressors other than the specified speed, but in this case different evaluation criteria may be used.

For machines driving reciprocating compressors, compliance with ISO 10816, other parts of ISO 20816 or other relevant standards will be and grading to evaluate. This document does not include drivers.

The application of this document is limited when considering the effects of internal parts of the machine, such as valves, pistons, piston rings, etc.

may be detected from measurements. The identification of such problems may require research into diagnostic techniques, which are beyond the scope of this document.

Reciprocating compressor systems to which this document applies include.

---Horizontal, vertical, V-type, W-type, L-type compressors;

--- Fixed speed and variable speed compressors;

--- Compressors driven by electric motors, gas engines, diesel engines and steam turbines, with or without gearboxes, flexible or rigid couplings connector;

--- Oil-free and oil-lubricated reciprocating compressors.

This document does not apply to ultra-high pressure compressors. This document does not apply to condition monitoring, nor is noise within the scope of this document.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

ring-Vocabulary)

Note. GB/T 2298-2010 Mechanical Vibration, Shock and Condition Monitoring Vocabulary (ISO 2041.2009, IDT).

3 Terms and Definitions

The terms and definitions defined in ISO 2041 and the following apply to this document.

3.1 compressor system

Mechanical system consisting of foundation, compressor (crankcase, crosshead slide, cylinder), pulsation damper and piping.

GB/T 41350 | GB/T 41655 | GB/T 41856.1 | GB/T 41850.9 | GB/T 41850.1 | GB/T 41856.2 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 51 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 2298-2010Mechanical vibration, shock and condition monitoring -- Vocabulary

ISO 2041.2009

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