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,0.018 2 Pa·s and 3.864 cm3/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
Key words
piston type pressure measuring instrument/leakage/seal clearance/orthogonal test
维普
万方数据