GB/T 4980-2025Determination of sound level for noise emitted by displacement compressors (English PDF)

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 replaces GB/T 4980-2003 "Determination of noise level of positive displacement compressors".

In addition to the integration and editorial changes, the main technical changes are as follows.

— Changed the scope (see Chapter 1, Chapter 1 of the 2003 edition);

— Added all terms and definitions (see Chapter 3);

— Changed the requirements for measuring instruments (see Chapter 5, 4.1 of the 2003 edition);

— Changed the installation and operation of the compressor (see Chapter 6, 4.3 of the 2003 edition);

— Changed the measuring point position (see 7.3.2, 5.1.3.2 of the 2003 edition);

— The measurement method has been changed (see 8.1.2, 5.1.4 of the 2003 edition);

— Changed the background noise correction method (see 8.3, 5.1.1 of the 2003 edition);

— Added the noise measurement method for compressors with main dimensions greater than 7m (see 9.1, Appendix D);

— Changed the uncertainty (see Chapter 10, 4.2.3 of the 2003 edition);

— The acoustic environment identification method has been changed (see Appendix A, 5.3 of the 2003 edition, Appendix E).

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document is under the jurisdiction of the National Technical Committee on Compressor Standardization (SAC/TC145).

This document was drafted by: Hefei General Machinery Research Institute Co., Ltd., Hefei General Mechanical and Electrical Products Testing Institute Co., Ltd., Guangdong Ai Gao Equipment Technology Co., Ltd., the 711th Research Institute of China State Shipbuilding Corporation, Xiamen East Asia Machinery Industry Co., Ltd., Shanghai Younai Atlas Copco (Wuxi) Compressor Co., Ltd., Hitachi Compressor (Suzhou) Co., Ltd., Shanghai Keluo Compressor Co., Ltd., Sazhen Compressor (Shanghai) Co., Ltd., Xinlei Compressor Co., Ltd., Pan Asia Gas Technology (Wuxi) Co., Ltd.

Co., Ltd., Guangdong Baode Technology Co., Ltd.

The main drafters of this document are: Geng Maofei, Li Jinrong, Bao Yangyang, Nie Changjun, Diao Anna, Han Wenhao, Lü Zhaoling, Ni Jie, Liu Xiaoyu, Gao Baohua, Cheng Hongxing, Yuan Jun, Zhu Yunyu, Ye Cailiang, Li Xiaosa, Han Hongdong, Wang Yuli, Lin Siqiao, Chen Yuguo, Li Zhongquan.

This document was first issued in 1985, revised for the first time in 2003, and this is the second revision.

Determination of Noise of Positive Displacement Compressors

1 Scope

This document describes the method for determining the noise emitted by positive displacement compressors (including the method for determining the sound power level of positive displacement compressors and the method for determining the noise emitted by positive displacement compressors in the workplace).

The standard specifies the method for determining the emission sound pressure level at the working position and specifies the installation, operation and working requirements of positive displacement compressors during the determination.

This document applies to positive displacement compressors including the driver.

2 Normative references

GB/T 3102.7

GB/T 3241-2010

GB/T 3785.1-2023

GB/T 3947

GB/T 15173-2010

3 Terms and definitions

The terms and definitions defined in GB/T 3102.7 and GB/T 3947 and the following apply to this document.