充气式蓄能器参数选型方法研究

容积和预充气压力是充气式蓄能器的关键参数,对其动态性能（工作状态下,其压力与流量的输出性能）有较大影响。以某型飞机舵面应急型充气式蓄能器计算选型为例,基于Hypneu 仿真软件中的液压元件库,结合该型飞机液压系统的主要设计参数以及应急型蓄能器的工作原理,建立蓄能器作动仿真模型;在Hypneu中设置测试点记录仿真曲线,通过分析仿真曲线探究充气式蓄能器的关键参数对其动态性能的影响;结合理论计算与仿真分析,提出一套蓄能器参数选型方法,并通过试验验证该选型方法。结果表明：蓄能器的预充气压力越大,初始蓄能器输出的有效容积越小,减少预充气压力增加有效容积的同时会降低蓄能器的输出压力,试验结果与仿真结果接近,使用该方法选型的蓄能器可以满足作动要求。

Research On Gas-charged Accumulator Parameter Selection Method

Volume and pre-charge pressure are the key parameters of the gas-filled accumulator, which have a great influence on its dynamic performance (the output performance of pressure and flow under working conditions).To provide a reference for the reasonable calculation and selection of accumulator parameters. , this paper takes the calculation and selection of a certain type of aircraft rudder surface emergency gas accumulator as an example, based on the hydraulic component library in the Hypneu simulation software, combined with the main design parameters of this type of aircraft hydraulic system and the working principle of the emergency accumulator, to establish an accumulator The simulation model of the actuation of the accumulator is established, and the test points are set in Hypneu to record the simulation curve, and the influence of the key parameters of the gas-filled accumulator on its dynamic performance is explored by analyzing the simulation curve. In addition, this paper combines theoretical calculation and simulation analysis to propose a set of Accumulator parameter selection method, and the selection method is verified by experiments. The results show that: the greater the pre-charge pressure of the accumulator, the smaller the effective volume output by the initial accumulator, and the reduction of the pre-charge pressure increases the effective volume at the same time. The output pressure of the accumulator will be reduced, the experimental results are close to the simulation results, and the accumulator selected by this method can meet the actuation requirements.