一种液压系统脉动消除器的设计与分析

Aiming at the requirement of eliminating the pressure pulsation and improving the reliability and the life of the aeronautical hydraulic system, a new type of pressure pulse filter for the hydraulic system is designed. Based on the fluid network theory, the theoretical models for the pulse filter and the experimental system are established. Considering the difference of installation mode and load type, the filtering effect of the pulse filter is analyzed. Then the feasibility of the structure and the accuracy of the theoretical analysis are verified through simulation. The fluent software is used in the simulation method, and the throttling load of the system is considered. Finally, the filtering effect of the pulse filter under different working conditions is verified by experiments. The results show that the developed pressure pulse filter has no moving part and compact layout, and has high compatibility with commonly used piston pump, and is one type of the available component to decrease the hydraulic pressure. Moreover, in the range of 300-500 Hz, the pulse filter can eliminate the pulsation of 10 dB in the experiment, meeting the requirement for aircraft hydraulic system. The pulse filter can be applied in aeronautical field in the future.