高速叶片泵流体噪声变化特性研究  

Study on the Characteristics of Fluid Noise Change in High Speed Vane Pump

作　　者：司国雷 李彬杰 杨润雪 李健伟 魏列江[2] SI Guolei;LI Binjie;YANG Runxue;LI Jianwei;WEI Liejiang(Sichuan Aerospace Fenghuo Servo Control Technology Corporation,Chengdu Sichuan 611130,China;Key Laboratory of Advanced Pumps,Valves and Fluid Control System of the Ministry of Education,Lanzhou University of Technology,Lanzhou Gansu 730050,China)

机构地区：[1]四川航天烽火伺服控制技术有限公司,四川成都611130 [2]兰州理工大学特种泵阀及流控系统教育部重点实验室,甘肃兰州730050

出　　处：《机床与液压》2024年第22期187-192,共6页Machine Tool & Hydraulics

摘　　要：为了研究高转速工况下叶片泵噪声的产生机制和变化特性,采用计算流体力学和计算气动声学联合仿真技术,对高速叶片泵的流体噪声变化规律进行数值模拟。通过建立高速叶片泵流体噪声计算模型,在考虑声固耦合的情况下,研究了转速和油液温度对高速叶片泵流体噪声的影响,并进行了实验验证。结果表明:在相同频率下,体声源强度高于面声源强度,且随着频率的上升,声压总体呈现下降趋势;随着油液温度的升高,由流量脉动和空化引起的流体噪声减小,温度每上升30℃,噪声值总体下降1.15~8.76 dB。In order to study the generation mechanism and variation characteristics of blade pump noise under high speed operating conditions,computational fluid dynamics and computational aeroacoustics joint simulation technology were used to numerically simulate the fluid noise variation law of high speed blade pumps.By establishing a computational model for fluid noise in high speed vane pumps,the effects of rotational speed and oil temperature on fluid noise in high speed vane pumps were studied,taking into account acoustic solid coupling.And experimental verification was made.The results show that at the same frequency,the intensity of the body sound source is higher than that of the surface sound source,and as the frequency increases,the overall sound pressure shows a downward trend.As the oil temperature increases,the fluid noise caused by flow pulsation and cavitation decreases.For every 30℃increase in temperature,the overall noise value decreases from 1.15 dB to 8.76 dB.

关 键 词：高速叶片泵 流体噪声 声源转换 流量脉动 空化噪声 

分 类 号：TH137[机械工程—机械制造及自动化]