可调压式液压蓄能器的节能仿真分析

针对气囊式液压蓄能器在工作中充放能不充分、能量密度低、工作参数不可调节的问题,提出一种可调压式液压蓄能器来改善上述问题。通过对可调压式液压蓄能器工作原理的分析,在AMESim软件中建立仿真模型,并将此蓄能器结合非对称泵应用于液压缸举升节能回路,同时设置采用气囊式液压蓄能器的回路为参照,开展节能仿真研究。结果显示:可调压式液压蓄能器比气囊式液压蓄能器多放能29%,电机多节能7.46%,有利于提高工程机械能量回收效率和作业性能。

Simulation Analysis of Energy Saving of Pressure Adjustable Hydraulic Accumulator

There are some problems such as insufficient charging and discharging energy, low energy density and unadjustable working parameters in the pneumatic accumulator. To solve these problems, a pressure adjustable hydraulic accumulator was proposed. Through analyzing the working principle of pressure adjustable hydraulic accumulator, a simulation model was established in AMESim software. The pressure adjustable hydraulic accumulator combined with asymmetric pump was applied to the hydraulic cylinder lifting energy saving circuit, and a circuit with pneumatic accumulator was set as a reference to carry out energy saving simulation analysis. The results show that the pressure adjustable hydraulic accumulator can release 29% more energy than the pneumatic accumulator, and the motor can save 7.45% more energy. It can improve the energy recovery efficiency of construction machinery.