压降检漏过程中温度对漏率检测影响研究  

The Influence of Temperature on Leak Rate in Pressure-based Air Leak Detector

作　　者：朱会学[1] 马林[1] 李锦云[1] 

机构地区：[1]华中科技大学FESTO气动技术中心,湖北武汉430074

出　　处：《机床与液压》2010年第13期10-12,21,共4页Machine Tool & Hydraulics

基　　金：国家自然科学基金面上项目(50675075)

摘　　要：建立压降检漏系统的数学模型,得出温度变化、压力变化以及实际漏率之间的关系,提出直压检漏系统中基于检测压力条件下容腔漏率检测的校正方法,并分析温度变化对差压检漏系统检测结果的影响。仿真结果验证基于检测压力条件下的漏率计算公式是有效的,表明差压检测法测得的泄漏量比实际泄漏量大。研究结果为压降检漏系统温度校正的深入研究提供参考。The mathematical model of pressure-based air leak detector was established. The relationships of temperature, pres- sure and leak rate were presented. The temperature compensation of leak detection based on the detected pressure was proposed in the direct-pressure-based air leak detector. The influence of temperature change on the result of differential pressure measurement was ana- lyzed. The simulation results verify the validity of the formula of leak rate based on the detected pressure in the direct-pressure-based air leak detector and show that the testing leakage is bigger than real leakage in differential pressure measurement.

关 键 词：压降检漏 漏率 温度补偿 

分 类 号：TB774[一般工业技术—真空技术]