摘要
阀盖与阀座是膜式燃气表的关键部件,是膜式燃气表计量误差的主要来源。采用二维激光位移传感器,设计了伺服电机驱动的二维定位平台与步进电机驱动的垂直立柱,通过MFC调用动态链接库函数的方式,实现了二维定位平台的双闭环反馈控制,实现了燃气表阀工作面的轮廓数据采集。结果表明:燃气表阀气密性合格与否的阈值为1.099μm,可准确无误地判断其气密性好坏,并在一定程度上可指导燃气表厂家进行气密性检测。
Valve cover and valve seat are critical components of diaphragm gas meter. And they are primary source of its metering error. With the 2D laser displacement sensor, two-coordinate platform and the vertical column were designed, which were driven by servo motor and stepper motor respectively. By means of MFC calling the functions of dynamic-link library, the double closed-loop feedback control of two-coordinate platform was achieved. Besides, the surface profile data of gas valve working surface was gathered. The results indicate that the threshold value of gas valve is 1.099 μm, which can judge the gas tightness of valves qualified or not, guide the gas meter manufacturers to test the gas tightness in some degree.
出处
《机械设计》
CSCD
北大核心
2018年第S1期162-165,共4页
Journal of Machine Design
关键词
燃气表阀
气密性
激光位移传感器
表面轮廓
gas meter valve
gas tightness
laser displacement sensor
surface profile
