基于AMESim的微磨料水射流增压系统压力稳定性研究

Study on the pressure stability of the micro abrasive water jet pressurization system based on AMESim

由于超高压发生器的瞬时压力是脉动的,所以水射流的出口速度是不稳定的,进而严重影响水射流机床的加工质量。蓄能器容积的大小、方向阀换向时间及喷嘴直径是影响系统压力稳定的主要因素。为此分析了系统压力稳定过程,并对3种不同方向阀的换向时间和4种不同容积的蓄能器应用AMESim(Advance Modeling Enviraneut for Performing Simrlatians ofErgineeving Systemsl)软件进行了仿真研究,所得结论与试验结果一致,对系统压力稳定性的提高具有指导意义。

Because the pressure of the instantaneous ultra generator is pulsing, the export speed of HPWJ is unstable, which seriously affects the quality of water jet machining tools. The accumulator volume, the directional valve reversal time and the nozzle diameter are the main factors which affect the stability, of the ,system pressure. Therefore, the stability of the system pressure is analyzed, and the three different direction valve commutation time and four different accumulator volume are simulated in AMESim software. The simulation results agree with the experimental results, which provides guiding significance for the improvement of system pressure stability.