一种复合式广谱液压脉动衰减器的设计与分析

为了降低液压泵出口的压力脉动,设计了一种复合式广谱液压脉动衰减器。该衰减器由1个扩张室、2个容积室、2个限流管和8个质量室构成。通过对复合式广谱液压脉动衰减器的参数进行合理配置,可实现对多个频率段的脉动进行衰减。采用插入损失来评价复合式广谱液压脉动衰减器的衰减效果,利用MATLAB软件对其衰减效果进行仿真,并分析了脉动衰减器主要结构参数与衰减效果的关系。结果显示,该液压脉动衰减器在20～1000 Hz的脉动频率范围内具有良好的衰减效果。复合式广谱液压脉动衰减器结构紧凑,衰减频率带变宽,衰减效果好,符合设计要求。

A Compound Wide-spectrum Hydraulic Pulsating Attenuator

In order to reduce the pressure pulsation at the outlet of hydraulic pump, a compound broad-spectrum hydraulic pulsation attenuator is designed. The attenuator consists of an expansion chamber, two volume chambers, two current limiting tubes and eight mass chambers. Through the rational configuration of the parameters of the complex wide spectrum hydraulic pulsating attenuator, the pulsating attenuation of multiple frequency segments can be realized. The insertion loss is used to evaluate the attenuation effect of the complex wide spectrum hydraulic pulsating attenuator, and MATLAB simulates the attenuation effect, and analyzes the relationship between the main structural parameters of the pulsating attenuator and it. The results show that the hydraulic pulsating attenuator has a good damping effect in the range of 20~1000 Hz pulsating frequency. The composite wide spectrum hydraulic pulsating attenuator has compact structure, high attenuation frequency and bandwidth, and good attenuation effect. It meets the design requirements.