钟罩浮力补偿中凸轮渐开线线型设计研究

Research on Involute Linetype of Cam for Buoyancy Compensation of Bell Prover

钟罩压力波动是衡量钟罩式气体流量标准装置准确度等级最关键的技术指标。通过对凸轮式浮力补偿机构中凸轮线型的设计进行的深入研究,给出了钟罩装置中凸轮的渐开线线型设计的具体方法,分析了钟罩应用中渐开线与阿基米德螺线的不同,解决了影响钟罩压力波动的关键设计问题,为进一步深入研究高准确度的钟罩提供了技术保证。

The pressure fluctuation is the key technical indicator to evaluate the accuracy class of bell provers. The design of cam linetype for buoyancy compensation is researched deeply. Concrete meth- od of involute linetype design of cam is advanced. Meanwhile, differences between involute and Archime- des spiral in applicaion to bell prover are analyzed. The crucial design question of bell prover is solved and further research on bell prover of higher accuracy class is guaranteed.