GB/T 9239.13-2023 English PDF

US$444.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 9239.13-2023: Mechanical vibration - Rotor balancing - Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9239.13-2023	444	Add to Cart	4 days	Mechanical vibration - Rotor balancing - Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors	Valid

Similar standards

GB/T 9445   GB/T 10610   GB/T 10609.1   GB/T 9239.11   GB/T 9239.12   GB/T 9239.21   

Basic data

Standard ID: GB/T 9239.13-2023 (GB/T9239.13-2023)
Description (Translated English): Mechanical vibration - Rotor balancing - Part 13: Criteria and safeguards for the in-situ balancing of medium and large rotors
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 21.120.40
Word Count Estimation: 24,230
Date of Issue: 2023-03-17
Date of Implementation: 2023-10-01
Older Standard (superseded by this standard): GB/T 28785-2012
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS21:120:40 CCSJ04 National Standards of People's Republic of China GB/T 9239:13-2023/ISO 21940-13:2012 Replacing GB/T 28785-2012 Mechanical Vibration Rotor Balancing Part 13: Criteria and safety protection for on-site balancing of large and medium-sized rotors Mechanical vibration-Rotorbalancing-Part 13: Criteria and (ISO 21940-13:2012, IDT) Released on 2023-03-17 2023-10-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 2 4 Field Balance 2 4:1 General 2 4:2 Reasons for site balancing 2 4:3 Purpose of Field Balancing 2 5 Guidelines for implementing site balancing3 6 Security protection 3 6:1 Safety protection of personnel when operating close to the rotating shaft 3 6:2 Special operating range for on-site balancing 3 6:3 Calibration quality and integrity and design of its connections3 6:4 Recommendations for specific machine safety4 7 Measure 4 7:1 Vibration measuring equipment 4 7:2 Measurement error 5 7:3 Phase reference signal 5 8 Running status 7 9 report 7 9:1 General 7 9:2 Report Overview 8 9:3 Vibration measuring equipment 8 9:4 Results 8 9:5 Text information 9 Appendix A (Normative) Precautions and safety protection for on-site balancing of specific machine types 10 Appendix B (Informative) Example of On-Site Balance Report for Boiler Fans Not Greater Than 1MW 11 Appendix C (Informative) Example of On-Site Balance Report for Turbine Generator Equipment Greater than 50MW 14 Reference 19

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: This document is part 13 of GB/T 9239 "Rotor Balance for Mechanical Vibration": GB/T 9239 has issued the following parts: --- Part 12: Balancing methods and tolerances for rotors with flexible characteristics; --- Part 13: Criteria and safety protection for on-site balancing of large and medium-sized rotors; --- Part 14: Evaluation procedures for balance errors; --- Part 21: Description and evaluation of balancing machines; --- Part 31: Machine unbalance variability and unbalance sensitivity; --- Part 32: Key criteria for shaft and mating balance: This document replaces GB/T 28785-2012 "Criteria and protection for on-site balancing of large and medium-sized rotors due to mechanical vibration": This document is related to Compared with GB/T 28785-2012, except for structural adjustment and editorial changes, the main technical changes are as follows: --- Deleted ISO 2041 and the term "site balance" (see Chapter 3 of GB/T 28785-2012); ---Change "magnitude" to "magnitude" (see Chapter 5, Chapter 5 of GB/T 28785-2012); --- Change "critical speed" to "resonance speed" (see Chapter 9, Chapter 9 of GB/T 28785-2012): This document is equivalent to ISO 21940-13:2012 "Mechanical Vibration Rotor Balancing Part 13: Standards for On-site Balancing of Large and Medium-sized Rotors" Rules and Security Protection": Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed and managed by the National Mechanical Vibration, Shock and Condition Monitoring Standardization Technical Committee (SAC/TC53): This document is drafted by: Zhengzhou Machinery Research Institute Co:, Ltd:, Huadian Electric Power Research Institute Co:, Ltd:, Henan Jiuyu Enpai Electric Power Technology Technology Co:, Ltd:, China Southern Power Grid Electric Power Technology Co:, Ltd:, Zhejiang University, China Institute of Metrology, Wolong Electric Nanyang Explosion-proof Group Co:, Ltd:, Qingdao National Laboratory of Marine Science and Technology Development Center, Hangzhou Steam Turbine Co:, Ltd:, Guangzhou Yongyibang Electronics Technology Co:, Ltd:, Xi'an Thermal Engineering Research Institute Co:, Ltd:, Shanghai Power Generation Equipment Design and Research Institute Co:, Ltd:, Sinopec Co:, Ltd: Qilu Branch: The main drafters of this document: Ma Weiping, Huang Haizhou, Guo Hui, Liu Shi, Chen Zhangwei, Cai Chenguang, Shen Zheng, Bing Hankun, Wang Zewei, Li Kongxing, Guo Yujie, Zhao Lei, Ding Xudong, Zhang Xueyan, Li Wangfan, Deng Jian, Wang Yanjie, Yang Yi: The previous versions of the documents replaced by this document are as follows: ---GB/T 28785, first released in:2012:

Introduction

Vibration caused by rotor unbalance is one of the most critical issues in the design and maintenance of rotating machinery: The dynamic forces it generates will have an impact on the machine and adverse effects on human health and safety: Balancing is the process of checking the mass distribution of a rotor and, if necessary, correcting it so that the remaining unbalance, or Vibration, or the process in which the forces on a bearing are within specified limits: GB/T 9239 "Mechanical Vibration Rotor Balance" explains balance in a general way, uses specific terms and definitions, and helps users choose Choose the appropriate balancing method and provide guidance for the application of balancing techniques: Contains most of the standards in the field of balance, grouped into five main areas: Introduction, vocabulary, balancing methods and tolerances, balancing machines, and mechanical design for balancing are intended to consist of the following parts: --- Part 1: Introduction: The purpose is to give the general background of the use of balancing technology in the GB/T 9239 series of documents, and to guide The user understands the corresponding part of the series, including vocabulary, balancing methods and tolerances, balancing machines and mechanical design for balancing: --- Part 2: Vocabulary: The purpose is to define the vocabulary used for balancing, giving an alphabetical index of the balancing vocabulary and a diagram of the balancing machine term solution guide: --- Part 11: Balance methods and tolerances for rotors with rigid characteristics: The purpose is to give a balancing method for rigid rotors and tolerances: It specifies the allowable value of residual unbalance, the necessary number of correction surfaces, the distribution of residual unbalance tolerance of correction surfaces and How to account for errors in the balancing process: --- Part 12: Balance methods and tolerances for rotors with flexible characteristics: The purpose is to give a balancing method for flexible rotors and tolerances: The typical structural forms of flexible rotors are given, the balance requirements according to their own characteristics are specified, and the balance methods are listed: method, provides a method for assessing the final state of equilibrium and gives guidance on tolerances for unbalance: --- Part 13: Criteria and safety protection for on-site balancing of large and medium-sized rotors: The purpose is to give large and medium-sized rotors in their own bearings The procedure for in-field balancing: Describes the conditions suitable for on-site balancing, the required instruments, the contents of safety measures, reports and Requirements for maintaining records: --- Part 14: Evaluation procedures for balance errors: The purpose is to give a procedure for evaluating the balance error and to specify the rotor Requirements for the identification of errors during balance measurements, the evaluation of identified errors and the consideration of errors in the determination of residual unbalance: --- Part 21: Description and evaluation of balancing machines: The purpose is to give the requirements for the performance evaluation of the balancing machine: --- Part 23: Balancing machine guards and other protective measures for measuring stations: The purpose is to give balancing machine shields and other protection Requirements for protective measures, define the different levels of protection provided by protective covers and other protective measures, and give the application of each level of protection scope: --- Part 31: Machine unbalance variability and unbalance sensitivity: The purpose is to give the determination of machine vibration sensitive to unbalance It provides a method for evaluating vibration sensitivity considering that the resonant speed is close to the operating speed: --- Part 32: Key criteria for shaft and mating balance: The purpose is to give a keyed rotor assembly when the individual components are balanced the only criterion: Mechanical Vibration Rotor Balancing Part 13: Criteria and safety protection for on-site balancing of large and medium-sized rotors

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- ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 9239.13-2023_English be delivered?

Answer: Upon your order, we will start to translate GB/T 9239.13-2023_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 9239.13-2023_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 9239.13-2023_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.