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GB/T 17483.1-2024 English PDF

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GB/T 17483.1-2024: Hydraulic fluid power - Test code for determination of noise level - Part 1: Hydraulic pumps
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GB/T 17483.1: Evolution and historical versions

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GB/T 17483.1-2024English529 Add to Cart 5 days [Need to translate] Hydraulic fluid power - Test code for determination of noise level - Part 1: Hydraulic pumps Valid GB/T 17483.1-2024
GB/T 17483-1998English120 Add to Cart 0--9 seconds. Auto-delivery Test code for the determination of airborne noise level of hydraulic pumps Obsolete GB/T 17483-1998

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Basic data

Standard ID GB/T 17483.1-2024 (GB/T17483.1-2024)
Description (Translated English) Hydraulic fluid power - Test code for determination of noise level - Part 1: Hydraulic pumps
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J20
Classification of International Standard 23.100.10
Word Count Estimation 26,227
Date of Issue 2024-09-29
Date of Implementation 2024-09-29
Older Standard (superseded by this standard) GB/T 17483-1998
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 17483.1-2024: Hydraulic fluid power - Test code for determination of noise level - Part 1: Hydraulic pumps


---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.
ICS 23.100.10 CCSJ20 National Standard of the People's Republic of China Replace GB/T 17483-1998 Specification for determination of noise in hydraulic transmissions Part 1.Hydraulic pumps Part 1.Hydraulic pumps Released on 2024-09-29 2024-09-29 implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Measurement uncertainty 3 5 Test environment 3 6 Measuring instruments 3 7 Pump Installation 4 8 Operating conditions 4 9 Noise measurement point locations and number of measurement points 5 10 Determination Procedure 5 11 Recording Information 6 12 Test Report 8 Appendix A (Normative) Accuracy levels and systematic errors of measuring instruments 9 Appendix B (Normative) Noise measurement point locations and number of measurement points (hemispherical measurement surface) 10 Appendix C (Normative) Noise measurement point locations and number of measurement points (parallelepiped measurement surface) 12 Appendix D (Normative) Correction value of background noise sound pressure level 13 Appendix E (Normative) Calculation of sound pressure level and sound power level 14 References 16

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 1 of GB/T 17483 "Specification for the determination of noise in hydraulic transmissions". GB/T 17483 has been published as follows part. --- Part 1.Hydraulic pumps; --- Part 2.Hydraulic motors. (Currently GB/T 34887-2017) This document replaces GB/T 17483-1998 "Specification for the determination of airborne noise levels of hydraulic pumps" and is consistent with GB/T 17483-1998. In addition to structural adjustments and editorial changes, the main technical changes are as follows. --- Added 11 terms and definitions (see 3.1, 3.3~3.5, 3.7~3.13); changed the terms "free field above the reflecting surface" and "measurement Definition of “surface” (see 3.2, 3.6, 3.1, 3.2 of the.1998 edition); --- Changed the requirements for the test environment (see Chapter 5, Chapter 5 of the.1998 edition); --- In measuring instruments, the requirements for calibration and verification have been deleted (see 6.3 of the.1998 edition); --- In the installation conditions of the pump base, the noise radiated through the base when the pump vibrates is minimized (see 7.1.2) and the flange flange is added Dimensional requirements (see 7.1.5); ---In the hydraulic circuit, the requirements for the length of the pipeline from the pump outlet to the load valve and the length of the hose connecting the inlet and outlet ports have been changed (See 7.3.5, 7.4.3 of the.1998 edition); Deleted the requirements for the installation position of the test instrument (or sensor) (See.1998 edition 7.4.5); Changed the description of the loading valve installation position (see 7.3.6, 7.4.6 of the.1998 edition); Added the fluid pipe of the test space Requirements for sound insulation materials for pipes and loading valves (see 7.3.8); --- Changed the test selected parameters and their allowable range of variation (see Table 2, Table 2 of the.1998 edition); --- In the noise measurement point position and measurement point number, a parallelepiped measurement surface is added (see Chapter 9, Appendix C); --- In the background noise measurement, the requirements for the direction and observation time of the sound transmission level are added (see 10.1.5); --- In the determination of pump noise, the validity confirmation of the test results is added (see 10.2.2); --- In the general information of recording information, the test unit is deleted (see 11.2 of the.1998 edition); ---Changed the pump description, noise measurement environment, pump installation conditions, instrumentation, pump operating conditions, and noise test data records. Recorded content (see 11.3.1, 11.3.2, 11.3.4, 11.3.6~11.3.8, see.1998 edition 11.3.1, 11.3.2, 11.3.4, 11.3.5~11.3.7); --- The location of the pump in the test environment is added to the recorded information (see 11.3.5); --- Added test report information (see Chapter 12); --- Changed the allowable systematic error of the measuring instrument (see Table A.1, Table B.1 of the.1998 edition); --- Changed the microphone positions on the hemispherical measurement surface (see Figure B.1, Figure C.1 of the.1998 edition), added 10 additional microphone positions The coordinates of the position (see Table B.1); --- Changed the difference between the sound pressure level measured when the pump is running and the background noise sound pressure level to (6~10) dB, the background noise sound pressure level Correction values (see Table D.1, Table D.2, Table D.1 of the.1998 edition); added the sound pressure level and background noise measured when the tested pump is running When the difference between the sound pressure levels of the ambient and ambient noise is (11-15) dB, the correction value of the background noise sound pressure level shall be (see Table D.1 and Table D.2); --- Changed the calculation formula of pump noise A-weighted average sound pressure level and A-weighted sound power level (see E.1.1, E.1.2, E.2.1, E.2.2, A.1.1, A.1.2, A.2.1, A.2.2 of the.1998 edition). 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 Hydraulic and Pneumatic Standardization Technical Committee (SAC/TC3). This document was drafted by. Ningbo Product and Food Quality Inspection Institute (Ningbo Fiber Inspection Institute), Beijing Machinery Industry Automation Research Institute Co., Ltd., Xiamen University, Suzhou Liyuan Hydraulics Co., Ltd., Bosch Rexroth (Beijing) Hydraulics Co., Ltd., Beijing Huade Hydraulics Industrial Group Group Co., Ltd., Taizhong Group Yuci Hydraulic Industry Co., Ltd., Jingzhou Xiangsheng Petroleum Machinery Co., Ltd., China Machinery Engineering Academy Group Haixi (Fujian) Branch Co., Ltd., Guangdong Keda Hydraulic Technology Co., Ltd., Chongqing Tiema Transmission Co., Ltd., Jiangsu Guorui Hydraulic Machinery Co., Ltd., Qianjiang Lianrui Petroleum Machinery Co., Ltd., Tongling University, Jiangsu Yuanye Hydraulic Machinery Co., Ltd., Zhejiang Jibao Intelligent Equipment Co., Ltd. Co., Ltd. and Foshan Nanhai Mingsheng Machinery Manufacturing Co., Ltd. The main drafters of this document are. Zheng Zhijian, Li Jincun, Gao Jingcheng, Luo Jing, Ye Shaogan, Xie Hui, Wang Liang, Zhou Yu, Zhao Liquan, Wang Hong, Jiang Chunquan, Luo Yun, Zhou Youguo, Ruan Ruiyong, Luo Yan, Wang Dongsheng, Ma Jianming, Xia Ping, Liang Runming. This document was first published in.1998 and this is the first revision.

Introduction

In a hydraulic fluid power system, power is transmitted and controlled by a pressurized fluid in a closed circuit. The pump is a component that converts mechanical power into hydraulic power. In the process of converting mechanical power into hydraulic power, the pump radiates air-borne sound noise, fluid-borne sound vibration, and other effects. vibration and structure-borne sound. The airborne noise level of a hydraulic pump is an important consideration when selecting components. Therefore, the noise test method needs to be able to The determination of the noise level is complicated by the presence of interference in the noise measurement. The body-borne and structure-borne vibrations can be transferred into the circuit, eventually increasing the background airborne noise level and affecting the pump air transmission. Determination of acoustic noise level. GB/T 17483 "Specification for the measurement of hydraulic transmission noise" aims to standardize the measurement method of airborne noise and is intended to consist of two parts. --- Part 1.Hydraulic pumps. The purpose is to determine the specification for the determination of the airborne noise level of hydraulic pumps operating under steady-state conditions. --- Part 2.Hydraulic motors. The purpose is to determine the specification for the determination of airborne noise levels of hydraulic motors operating under steady-state conditions. Specification for determination of noise in hydraulic transmissions Part 1.Hydraulic pumps

1 Scope

This document specifies the specifications for the determination of the airborne noise levels of hydraulic pumps (hereinafter referred to as pumps) operating under steady-state conditions. This document is applicable to measuring the A-weighted sound power level of the pump and the sound power level of the pump in the frequency band (center frequency from 125 Hz to 8000 Hz). This document applies to pumps of all types and sizes, except for any limitations in specifications resulting from the test environment.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 3241 Electroacoustic octave and fractional octave filters GB/T 3767 Acoustics - Determination of sound power level and sound energy level of noise source by sound pressure method - Engineering method for approximate free field above reflecting surface GB/T 3785 (all parts) Electroacoustic sound level meter GB/T 3947 Acoustic Terminology GB/T 6882 Acoustics Sound pressure method for determining the sound power level and sound energy level of noise sources - Anechoic chamber and semi-anechoic chamber precision method GB/T 7631.2 Classification of lubricants, industrial oils and related products (Class L) Part 2.Group H (Hydraulic systems) GB/T 17446 Fluid power systems and components vocabulary ISO 9613-1.1993 Acoustics - Attenuation of outdoor sound propagation - Part 1.Calculation of atmospheric sound absorption mosphere)

3 Terms and definitions

The terms and definitions defined in GB/T 17446 and GB/T 3947 and the following apply to this document. 3.1 free sound field The sound field in a homogeneous isotropic medium where boundary effects can be neglected. NOTE In practice, this is a sound field in which boundary effects are negligible in the frequency range 125 Hz to 8000 Hz. 3.2 The free sound field in half space above an infinite reflecting surface with no other obstacles (3.1). Note. The sound source to be measured is located on this surface. 3.3 Anechoic room A test chamber with free sound field (3.1) is available.

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