安全阀阀瓣膜传感器标定的理论与实验研究  

Theoretical and Experimental Research on Calibration of Slide Valve Membrane Sensor of Safety Valve

作　　者：郭崇志[1] 丘垂育[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640

出　　处：《传感技术学报》2009年第5期647-650,共4页Chinese Journal of Sensors and Actuators

基　　金：国家质检总局科研计划项目资助(2008QK256)"具有在线监测功能的安全阀其监测系统的应用研究"

摘　　要：通过对安全阀阀瓣膜传感器进行ANSYS数值模拟和相关实验研究,从理论和实验两方面探索了对阀瓣膜传感器进行标定问题,经过实验验证后,提出了一种准确可行的标定方案。首先,采用ANSYS软件模拟了阀瓣膜传感器承受不同载荷下的应变与压力的关系;同时也设计了一套阀瓣膜传感器的标定实验装置,利用该实验装置对阀瓣膜传感器进行了标定实验。标定实验结果分析表明,阀瓣在承受不同载荷的情况下,应变与压力呈良好的线性关系,线性度达到99.9%,并与相同载荷情况下ANSYS分析结果完全吻合,从而验证了这一标定实验方案的可靠性;通过对阀瓣膜传感器的灵敏度、线性度、重复性、滞后性等指标进行分析,结果显示其参数满足一般传感器的标准,验证了该传感器的可行性。Through ANSYS simulation and experimental research, the calibration of slide valve membrane sensor of safety valve was discussed both in theoretical and experimental sides. After experimental validation, a viable and accurate program was got. First of all, the relationship between strain and pressure of slide valve membrane sensor under different loads was analyzed and simulated by using ANSYS software; then an experimental device was designed and used to calibrate the slide valve membrane sensor. The experimental results show that the relationship between the strain and pressure of slide valve membrane sensor under different loads is linear, and its linearity reaches 99.9 percent. It is basically consistent with the result of ANSYS simulation in the case of same loads, and the reliability of calibration experiment was verified. Besides, the slide valve membrane sensor＇s parameters, including sensitivity, linearity, repeatability, hysteresis quality, generally meet sensor criteria. These prove that the sensor is feasible.

关 键 词：阀瓣膜传感器 安全阀 圆膜式应变计 标定 

分 类 号：TM305[电气工程—电机] TP212.1[自动化与计算机技术—检测技术与自动化装置]