离子液体氢气压缩机整机系统动力学特性仿真分析  

Simulation and Analysis of Dynamic Properties of Ionic Liquid Hydrogen Compressor System

作　　者：曲殿君 魏双会 张鑫 赵强[2] 王增丽[2] QU Dianjun;WEI Shuanghui;ZHANG Xin;ZHAO Qiang;WANG Zengli(Lanzhou LS Petroleum Equipment Engineering Co.,Ltd.,Lanzhou 730314,China;College of New Energy,China University of Petroleum(East China),Qingdao,Shandong 266580,China)

机构地区：[1]兰州兰石石油装备工程股份有限公司,兰州730314 [2]中国石油大学(华东)新能源学院,山东青岛266580

出　　处：《西安交通大学学报》2025年第2期201-210,共10页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(52376020);中央高校基本科研业务费专项资金资助项目(23CX07007A)。

摘　　要：针对离子液体氢气压缩机中,液压驱动和氢气增压复杂耦合引起的整机系统动力平衡困难以及振动噪声问题,基于SimulationX设计构建了三级离子液体氢气压缩机的多系统耦合动力学分析模型,对氢气增压系统和液压驱动系统的瞬态动力学特性开展研究。通过多周期仿真,得到液压油和氢气作用下活塞启动阶段和稳定运行阶段的动力学特性;计算曲轴切向和法向合力,分析各级活塞力对曲轴不平衡性的影响;在变工况条件下运行系统,研究不同进气压力下电机的转速不均匀系数。计算结果表明:气阀开度的频繁变化和液压油的可压缩性会引起压缩活塞速度波动,活塞在上、下止点处会发生合外力突变,减小二级活塞力可有效提高曲轴平衡性;在进气压力由30 bar下降到15 bar过程中,各工况下电机转速不均匀系数均小于1%,且压力变化会导致系统运行不稳定,从而影响系统耗能。研究结果可为离子液体氢气压缩机的设计优化提供参考。To address the problems of power balance and vibration noise caused by the complex coupling of the hydraulic drive system and hydrogen pressurization system in the ionic liquid hydrogen compressor,a multisystem coupling dynamics model of threestage ionic liquid compressor was constructed based on SimulationX,and the transient dynamic properties of the hydraulic drive system and hydrogen pressurization system were investigated.The dynamic properties of the piston under the action of hydraulic oil and hydrogen in the startup stage and stable operation stage were obtained through multicycle simulation.The tangential and normal resultant forces of the crankshaft were calculated to analyze the influence of piston forces at all levels on the imbalance of the crankshaft.The system was operated under variable operating conditions,and the nonuniformity of the motor speed was investigated under different inlet pressures.It is found that frequent changes in valve opening and compressibility of hydraulic oil caused fluctuations in the speed of the compression piston,a sudden change in the resultant external force occurred at the upper and lower dead centers of the piston,and the balance of the crankshaft could be effectively improved by reducing the secondary piston force.As the inlet pressure decreased from 30bar to 15bar,the nonuniform coefficient of the motor speed was less than 1%under various operating conditions,the change in inlet pressure caused instability in the operation of the system,thus affecting the energy consumption of the system.The study results can provide a reference for the design optimization of ionic liquid hydrogen compressors.

关 键 词：氢气压缩机 氢气增压系统 液压驱动系统 多系统耦合 瞬态动力学特性 

分 类 号：TH457[机械工程—机械制造及自动化]