调速阀堵塞故障分析及数字化反馈系统设计  

Fault Analysis and Digital Feedback System Design of Speed Control Valve

作　　者：周琪 孟利民 李强[1] 曹旭峰 ZHOU Qi;MENG Li-min;LI Qiang;CAO Xu-feng(School of Mechanical Engineering,Anhui University of Science&Technology,Huainan,Anhui 232001;State Key Laboratory of Fluid Power and Mechatronic Systems,Hangzhou,Zhejiang 310027)

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001 [2]流体动力与机电系统国家重点实验室,浙江杭州310027

出　　处：《液压与气动》2023年第8期117-123,共7页Chinese Hydraulics & Pneumatics

基　　金：流体动力与机电系统国家重点实验室开放基金(GZKF-202211);安徽理工大学研究生创新基金(2022cx2066)。

摘　　要：为了研究调速阀阀口堵塞对液压传动系统工作状态的影响机理,基于AMESim软件,建立了调速回路仿真模型,分析节流口不同堵塞程度下的调速阀出口流量及压力波动特性,观察执行元件的速度变化趋势。研究表明由于堵塞引起的通流面积下降使介质流动状态发生改变,从而影响回路及执行元件的工作状况。鉴于此,针对调速阀节流部分设计一种监测流量并可实现自我调节的数字化反馈系统。结果表明在不同程度的堵塞情况下,该反馈系统可以实现流量调控或停止回路工作,因而提高调速回路准确性及调速阀维护时效性。To investigate the mechanism of regulating valve port blockage on the operation of a hydraulic transmission system.Based on AMESim software,the simulation model of the speed control circuit is established,and the flow and pressure fluctuation characteristics of the speed control valve outlet under different blockage degrees of the orifice are analyzed.Research shows that the decrease in flow area caused by blockage changes the flow state of the medium,thus affecting the working conditions of the circuit and the actuator.In view of this,a digital feedback system for monitoring flow and self-regulation is designed for the throttling part of the speed control valve.The results show that the feedback system can achieve flow control or stop the loop under different degrees of blockage,thus improving the accuracy of the speed control loop and the timeliness of the speed control valve maintenance.

关 键 词：调速阀 AMESim模型 堵塞问题 数字化 反馈系统 

分 类 号：TH137[机械工程—机械制造及自动化]