The Influence of Pressure Pulsation on Safety Valves Opening Pressure
As a critical component of the aviation hydraulic system,the safety valve's performance directly impacts the safety and stability of aviation flight.The difference of opening pressure between factory test and external test of safety valves for aviation hydraulic system is studied.The research focuses on the influence of pressure pulsation of test bench on opening pressure of the safety valve.By theoretical derivation,a mathematical expression relating the pressure pulsation amplitude to opening pressure is obtained and experimentally validated.Experimental results demonstrate that the frequency of pressure pulsation has no effect on opening pressure.However,there is a negative correlation between the pressure pulsation amplitude and the opening pressure.Based on this conclusion,the phenomenon of high opening pressure in external test is effectively resolved.The research provides guidance and reference significance for the testing of aviation hydraulic components and the consistency testing of theoretical and actual performance of the components.
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