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GB/T 41980.2-2022 English PDF

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GB/T 41980.2-2022: Hydraulic fluid power - Determination method of pressure ripple levels generated in systems and components - Part 2: Hydraulic pumps(simplified method)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41980.2-2022	409	Add to Cart	4 days	Hydraulic fluid power - Determination method of pressure ripple levels generated in systems and components - Part 2: Hydraulic pumps(simplified method)	Valid

Similar standards

GB/T 42155 GB/T 40565.3 GB/T 40565.2 GB/T 41980.3 GB/T 41981.1 GB/T 41981.2

Basic data

Standard ID: GB/T 41980.2-2022 (GB/T41980.2-2022)
Description (Translated English): Hydraulic fluid power - Determination method of pressure ripple levels generated in systems and components - Part 2: Hydraulic pumps(simplified method)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J20
Classification of International Standard: 23.100.10
Word Count Estimation: 22,238
Date of Issue: 2022-10-14
Date of Implementation: 2022-10-12
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41980.2-2022: Hydraulic fluid power - Determination method of pressure ripple levels generated in systems and components - Part 2: Hydraulic pumps(simplified method)

---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.
Hydraulic fluid power -- Determination method of pressure ripple levels generated in systems and components -- Part 2.Hydraulic pumps(simplified method) ICS 23.100.10 CCSJ20 National Standards of People's Republic of China in hydraulic transmission systems and components Determination of pressure fluctuations Part 2.Hydraulic pumps (simplified method) (ISO 10767-2.1999, Hydraulicfluidpower-Determinationof 2022-10-12 Released 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and Units 1 5 Instrumentation 2 6 General provisions 3 7 Determination of geometric parameters and fluid sound velocity 3 8 Valid frequency and pressure ranges3 9 Test loop 4 10 Test Step 5 11 Data representation 5 12 Annotation Description 6 Appendix A (Informative) Description of the Test Procedure for Pressure Fluctuation of the Pump Under Test 7 Appendix B (normative) Test Report Sample Form 16 Reference 18

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 of Standardization Documents" drafted. This document is part 2 of GB/T 41980 "Methods for the determination of pressure fluctuations in hydraulic transmission systems and components". GB/T 41980 The following sections have been published. --- Part 1.Hydraulic pumps (precision method); --- Part 2.Hydraulic pumps (simplified method). This document is modified using ISO 10767-2.1999 "Determination of pressure fluctuations in hydraulic transmission systems and components - Part 2.For pumps simplification method". The technical differences between this document and ISO 10767-2.1999 and their reasons are as follows. --- Replaced ISO 5598.1985 with the normatively cited GB/T 17446 and replaced with the normatively cited GB/T 41980.1 ISO 10767-1 (see Chapter 3) to adapt to our country's technical conditions and increase operability; --- Added the symbol c to indicate the speed of sound in the corrected fluid (see Table 1 in 4.1) to adapt to the technical conditions of our country; --- Replaced ISO 1000.1992 (see 4.2, 11.3) with the normatively quoted GB 3100 to adapt to the technical conditions of our country, adding Operability; --- Replaced ISO 1219-1.1991 (see 4.3) with the normatively cited GB/T 786.1 to adapt to the technical conditions of our country, adding Operability; --- Changed the way of citing the date of ISO 9110-1 (see Chapter 5, 6.1) to adapt to the technical conditions of our country and increase the operability action; --- Change the piezoelectric pressure sensor required for pressure fluctuation measurement to a pressure sensor, without limiting the pressure sensor principle (see 5.2), in order to adapt to the technical conditions of our country. The following editorial changes have been made to this document. --- In order to harmonize with existing standards, the name of the standard is changed to "Determination of Pressure Fluctuations in Hydraulic Transmission Systems and Components Part 1" Part. Hydraulic Pump (Simplified Method)"; --- Replaced ISO 10767-1.1996 with GB/T 41980.1 cited for information (see 7.1, 9.2); --- Adjusted the appendix number and order; --- Added the word "(uncorrected)" after the fluid reference sound velocity c0 in Table B.2. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Hydraulic Pneumatic Standardization Technical Committee (SAC/TC3). This document is drafted by. Yanshan University, Zhejiang University, Hefei Dongfang Energy Saving Technology Co., Ltd., Beijing Huade Hydraulic Industry Group Co., Ltd. Co., Ltd., Sichuan Aerospace Fiberhome Servo Control Technology Co., Ltd., Guangzhou Huaxin Hydraulic Co., Ltd., Xuzhou Weieride Heavy Industry Technology Co., Ltd., Taizhong Group Yuci Hydraulic Industry (Jinan) Co., Ltd., Xiamen University, Taiyuan University of Science and Technology, Beijing Machinery Industry Automation Research Company Limited. The main drafters of this document. Cai Wei, Zhao Jingyi, Xu Bing, Wu Peng, Jiao Ling, Liu Yuhui, Yu Changhe, Xiao Hua, Liu Yufeng, Hou Liang, Ye Shaoqian, An Gao Cheng, Cao Qiaohui, Compass.

Introduction

GB/T 41980 "Determination of pressure fluctuations in hydraulic transmission systems and components" aims to standardize pressure waves in hydraulic systems and components The dynamic measurement method consists of three parts. --- Part 1.Hydraulic pumps (precision method). A test designed to determine source flow pulsation and source impedance for measuring positive displacement hydraulic pumps program. --- Part 2.Hydraulic pumps (simplified method). The purpose is to determine the test procedure for measuring the accuracy of a positive displacement hydraulic pump without high requirements. --- Part 3.Hydraulic motors. The purpose is to determine the test procedure for the hydraulic motor under steady state conditions. If you need to measure pressure fluctuations at lower pressure levels, lower frequencies or higher accuracy levels, GB/T 41980.1 can be used. Book The test program of the file can obtain pressure fluctuation data with minimal calculation and processing of the measured data. This document establishes a unified A program to measure and report the pressure fluctuation characteristics of hydraulic pumps to assist in the design of low-noise hydraulic systems. Appendix A gives the test The relevant technical requirements of the test program. in hydraulic transmission systems and components Determination of pressure fluctuations Part 2.Hydraulic pumps (simplified method)

1 Scope

This document specifies the test procedure for the fluid pressure fluctuation characteristic value of hydraulic pumps (maximum error is 1dB~-3dB). This document applies to the measurement and data processing of the pressure fluctuation characteristics of hydraulic pumps.

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. GB/T 786.1 Graphical symbols and circuit diagrams of fluid transmission systems and components - Part 1.Graphical symbols (GB/T 786.1- 2021, ISO 1219-1.2012, IDT) GB 3100 International System of Units and Its Application (GB 3100-1993, eqvISO 1000.1992) GB/T 17446 Vocabulary of Fluid Transmission Systems and Components (GB/T 17446-2012, ISO 5598.2008, IDT) GB/T 41980.1 Determination of pressure fluctuations in hydraulic transmission systems and components - Part 1.Hydraulic pumps (precision method) (GB/T 41980.1-2022, ISO 10767-1.2015, MOD)

3 Terms and Definitions

The terms and definitions defined in GB/T 17446 and GB/T 41980.1 and the following terms and definitions apply to this document. 3.1 LS The equivalent length of the outlet chamber (from the high pressure chamber of the pump to the inlet of the test line) during normal operation under the specified test conditions. 3.2 DS The equivalent diameter of the outlet chamber (from the pump high pressure chamber to the test line inlet) under normal operation under the specified test conditions.

4 Symbols and units

4.1 The symbols given in Table 1 apply to this document. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 41980.2-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 41980.2-2022_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 41980.2-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 41980.2-2022_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.