摘要
往复压缩机运行过程中,如果其气量调节系统中的执行器失效,将可能影响压缩机的工作效率,甚至导致严重的问题。为此,构建了一种多执行器气量调节模型,提出了一种自愈调控算法,旨在有效应对执行器失效故障对系统性能和可靠性的影响。首先,建立了耦合执行器失效故障的压缩机多气阀并流机理模型,揭示了不同执行器故障模式对压缩机排气量、能耗、功率等热力学性能的影响规律,为后续研究自愈调控提供了基础数据;然后,提出了一种基于故障执行器隔离—负荷再分配—回流阀流量调整的执行器失效故障的自愈调控算法,该算法通过评估故障的劣化程度并启动相应调控策略,实现了系统自我修复的目标;最后,搭建了实验平台,分别进行了执行器失效故障实验和故障自愈调控实验,验证了自愈调控的快速性和稳定性。研究结果表明:气量调节系统的故障劣化程度跟执行器故障模式、系统工况参数有关;如果失效故障执行器数量增加,故障劣化程度会随之增加;如果系统工况负荷降低,故障劣化程度也会随之增加,据此可划分压缩机的故障劣化程度区间;通过启动自愈调控算法,成功抑制了故障的发展,分别在8 s、13 s内将发生轻度劣化、中度劣化故障工况的排气量波动调整至许可范围内,实现了将故障状态迅速恢复至正常状态的目标,从而满足了工业生产的要求。该研究可以为往复压缩机气量调节系统的稳定性和可靠性提供一种有效的应对方案。
During the operation of reciprocating compressor,if the actuator in its air volume regulation system fails,it may affect the working efficiency of the compressor and even lead to serious problems.Therefore,a multi-actuator gas flow regulation model was constructed,and a self-healing regulation algorithm was proposed to effectively deal with the influence of actuator failure on system performance and reliability.Firstly,a multi valve co-flow mechanism model for coupled actuator failure faults in compressors was established,and the influence of different actuator failure modes on the thermodynamic performance of compressor was revealed,such as discharge capacity,energy consumption,power,which provided basic data for subsequent research on self-healing control.Then,a self-healing control algorithm for actuator failure faults based on fault actuator isolation load redistribution reflux valve flow adjustment was proposed.The goal of system self-healing was realized by evaluating the deterioration degree of the fault and starting the control strategy accordingly.Finally,the experimental platform was built,and the actuator failure experiment and fault self-healing regulation experiment were respectively carried out to verify the rapidity and stability of self-healing regulation.The research results indicate that the degree of fault degradation in the air volume regulation system is related to the actuator fault mode and system operating parameters.If the number of failed actuators increases,the degree of fault degradation also increase.If the operating load of the system decreases,the degree of fault degradation also increases accordingly.Based on this,the degradation degree range of compressor faults can be divided.By activating the self-healing regulation algorithm,the development of faults is successfully suppressed.The fluctuation of exhaust volume under mild and moderate degradation fault conditions is respectively adjusted to the allowable range within 8 s and 13 s,achieving the goal of quickly restoring the fault
作者
田毅
刘雯华
王瑶
张进杰
江志农
TIAN Yi;LIU Wenhua;WANG Yao;ZHANG Jinjie;JIANG Zhinong(Beijing Key Laboratory of Health Monitoring and Self-recovery for High-end Mechanical Equipment,Beijing University of Chemical Technology,Beijing 100029,China;Guizhou Aerospace Kai Shan Petroleum Instrument Co.,Ltd.,Guizhou 550009,China)
出处
《机电工程》
CAS
北大核心
2024年第11期1958-1966,1976,共10页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(52101343)
中央高校基本科研业务费专项基金资助项目(ZY2455)。
关键词
往复式压缩机
多执行器气量调节模型
故障劣化程度评估
调控策略
执行器故障模式
故障劣化程度
故障自愈调控
reciprocating compressor
multi-actuator air volume regulation model
evaluation of fault deterioration degree
control strategy
actuator failure fault mode
degree of fault deterioration
fault self-healing regulation
