基于正交试验的压力计量仪泄漏量影响因素分析  

Analysis of influencing factors in pressure measurement instrument leakage based on orthogonal test

作　　者：孙玲 张远 于亚文 SUN Ling;ZHANG Yuan;YU Yawen(School of Mechanical Engineering and Automation,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学机械工程与自动化学院,辽宁大连116034

出　　处：《大连工业大学学报》2024年第3期212-216,共5页Journal of Dalian Polytechnic University

基　　金：辽宁省教育厅科学研究项目(J2020107).

摘　　要：针对0~250 MPa自动活塞式压力计量仪器的活塞系统,利用ANSYS Fluent仿真软件,仿真计算了不同压力、密封间隙、不同动力黏度条件下活塞系统泄漏量的变化规律。在压力为250 MPa时,间隙为0.02 mm,动力黏度为0.018 2 Pa·s,此时的泄漏量达到最大3.864 cm^(3)/s。通过正交试验对比分析得出各因素对活塞泄漏量影响的主次顺序依次为活塞间隙、压力、流体动力黏度。研究结果对研制高效率、高精度的活塞式压力计量仪器具有指导意义。Aiming at the piston system of 0-250 MPa automatic piston pressure measuring instrument,ANSYS Fluent simulation software was used to simulate and calculate the change rule of leakage of piston system under different pressure,seal clearance and dynamic viscosity.When the pressure was 250 MPa,the clearance,the dynamic viscosity and the maximum leakage amount were 0.02 mm,0.0182 Pa\5s and 3.864 cm 3/s,respectively.A comparative analysis of the orthogonal tests showed that the piston gap,pressure and hydrodynamic viscosity were the main factors influencing the piston leakage in order of priority.It has guiding significance to develop high efficiency and high precision piston pressure measuring instrument.

关 键 词：活塞式压力计量仪器 泄漏量 密封间隙 正交试验 

分 类 号：TH137[机械工程—机械制造及自动化] TH117