液压管路压力非插入式检测方法研究

Study on Non-intrusive Pressure Measurement Method in Hydraulic Pipe System

传统液体压力检测方法需要感压元件和液体介质相接触才能实施检测 ,因而在液压系统故障诊断中临时安装压力表或压力传感器是十分困难的。非插入式液体压力检测方法有助于快速故障诊断的实现。方法之一是将液压作用下金属管道外径变形量转化为压力变化量 ,这是传统测压方法的延伸。本文提出通过测量超声波在液体介质中传播的声速实现压力非插入式检测的新方法。该方法完全突破了传统液体压力检测方法的思维模式 ,具有重要的应用价值。

With the help of the non-intrusive pressure measurement method,trouble diagnosis for the hydraulic pipe systems can be carried out rapidly and economically.One of the methods is to convert the deformation of external diameter of the metal pipes under pressure into a change of pressure A new mehod presented here is based on the determination of ultrasonic wave velocity of liquid media inside the pipe to realize the pressure measurement.