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GB/T 9239.13-2023Mechanical vibration - Rotor balancing - Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

March 17, 2023

Implementation date

October 1, 2023

Scope

GB/T 9239.13-2023 (Mechanical vibration - Rotor balancing - Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors) is available as an English-translated PDF.

GB/T 9239.13-2023 is the Chinese standard "Mechanical vibration - Rotor balancing - Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors".

Its scope clause reads: This document specifies the procedure for on-site balancing of large and medium sized rotors in their own bearings: Describes the conditions suitable for on-site balancing, the required equipment, content of safety measures, and requirements for reporting and maintenance records: This document applies to the basis of the on-site balancing contract: This document does not provide guidance on methods for calculating corrected mass from measured vibration data: NOTE: The procedures specified in this document are suitable for medium and large machines: However, when it comes to small machines that need to maintain a good record of vibration characteristics and alignment mass configuration, many principles The same principle applies to smaller machines:.

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Document preview — GB/T 9239.13-2023

National Standard of the People's Republic of China

ICS: 21.120.40
Classification: J 04
Replacing: GB/T 28785-2012

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

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Field Balance
5 Guidelines for implementing site balancing
6 Security protection
7 Measure
8 Running status
9 report
Appendix A (Normative) Precautions and safety protection for on-site balancing of specific machine types
Appendix B (Informative) Example of On-Site Balance Report for Boiler Fans Not Greater Than 1MW
Appendix C (Informative) Example of On-Site Balance Report for Turbine Generator Equipment Greater than 50MW

1 Scope

This document specifies the procedure for on-site balancing of large and medium sized rotors in their own bearings: Describes the conditions suitable for on-site balancing, the required equipment, content of safety measures, and requirements for reporting and maintenance records:

This document applies to the basis of the on-site balancing contract:

This document does not provide guidance on methods for calculating corrected mass from measured vibration data:

NOTE: The procedures specified in this document are suitable for medium and large machines: However, when it comes to small machines that need to maintain a good record of vibration characteristics and alignment mass configuration, many principles

The same principle applies to smaller machines:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document:

Note: GB/T 13824-2015 Requirements for Mechanical Vibration of Rotating and Reciprocating Machines on Vibration Severity Measuring Instruments (ISO 2954;:2012, IDT)

Note: GB/T 11348 (all parts) Mechanical vibration is measured on the rotating shaft to evaluate the vibration of the machine [ISO 7919 (all parts)]

Note: GB/T 6075 (all parts) Mechanical vibration is measured and evaluated on non-rotating parts Vibration of machines [ISO 10816 (all parts)]

ISO 10817-1 Rotating shaft vibration measurement system Part 1: Relative and absolute detection of radial vibration (Rotatingshaft

Note: GB/T 21487:1-2008 Shaft Vibration Measurement System Part 1: Relative and Absolute Detection of Radial Vibration (ISO 10817-1:1998, IDT)

Part 2:Vocabulary)

Note: GB/T 6444-2008 Mechanical Vibration Balance Vocabulary (ISO 1925:2001, IDT)

ISO 21940-11 Mechanical vibration rotor balancing - Part 11: Balance method and tolerances for rotors with rigid characteristics (Me- iour)

Note: GB/T 9239:1-2006 Mechanical vibration constant (rigid) rotor balance quality requirements Part 1: Specification and inspection of balance tolerances (ISO 1940-1:2003, IDT)

ISO 21940-12 Mechanical vibration rotor balancing - Part 12: Balancing methods and tolerances for rotors with flexible characteristics (Me- haviour)

Note: GB/T 9239:12-2021 Mechanical Vibration Rotor Balance Part 12: Balance Method and Tolerance for Rotors with Flexibility (ISO 21940-

GB/T 9445 | GB/T 10610 | GB/T 10609.1 | GB/T 9239.11 | GB/T 9239.12 | GB/T 9239.21 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 40 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 2954 · GB/T 11348 · ISO 7919 · ISO 10816 · ISO 10817 · GB/T 21487 · ISO 1925 · ISO 21940 · GB/T 9239

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