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

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 12, 2022

Implementation date

October 12, 2022

Scope

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)) is available as an English-translated PDF.

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

Its scope clause reads: 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. Its clauses include terms and definitions; symbols and units.

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Document preview — GB/T 41980.2-2022

National Standard of the People's Republic of China

ICS: 23.100.10
Classification: J 20

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

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Symbols and Units
5 Instrumentation
6 General provisions
7 Determination of geometric parameters and fluid sound velocity
8 Valid frequency and pressure ranges
9 Test loop
10 Test Step
11 Data representation
12 Annotation Description
Appendix A (Informative) Description of the Test Procedure for Pressure Fluctuation of the Pump Under Test
Appendix B (normative) Test Report Sample Form

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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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 37 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 1219 · ISO 5598.2008 · ISO 10767

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