GB/T 41980.1-2022 Active National standards

GB/T 41980.1-2022 Hydraulic fluid power—Determination method of pressure ripple levels generated in systems and components—Part 1:Hydraulic pumps(precise method)

Publish Date: 2022-10-12 Implement Date: 2022-10-12 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 41980.1-2022

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Hydraulic and pneumatic devices

ICS Name: Pumps and motors

Publish Date: 2022-10-12

Implement Date: 2022-10-12

Pages: 26 pages

Scope

This document establishes a test procedure for measuring the source flow pulsation and source impedance of a volumetric hydraulic pump. This document is applicable to all types and sizes of volumetric pumps operating under steady-state conditions with a pump excitation frequency ranging from 50 Hz to 400 Hz. This document takes the calculation of high-impedance pressure fluctuations as an example. The method and theoretical basis of the test procedure are explained in Appendix A. The test procedure is called the dual-pressure/dual-system method. The evaluation items are as follows: a) the source flow pulsation (in the standard Norton model) amplitude (m3/s) and phase (°) of more than 10 individual pump excitation frequency harmonics; b) the source flow pulsation (in the modified model) amplitude (m3/s), phase (°), and time-domain waveform of more than 10 individual pump excitation frequency harmonics; c) the source impedance amplitude (N·s/m5) and phase (°) of more than 10 individual pump excitation frequency harmonics; d) the high-impedance pressure fluctuations (MPa) of more than 10 individual pump excitation frequency harmonics, and the root-mean-square average value of the pressure fluctuation harmonics f1~f10.