Research on Self-healing Control Method for Gas Regulation Failure in Reciprocating Compressor under Valve Fault Condition

doi:10.3901/JME.2021.12.267

Abstract

Abstract: Valves are the most vulnerable components of a reciprocating compressor. Especially under the working condition of the air volume regulating system, valve disc rupture, spring rupture and other faults occur frequently, which leads to the failure of gas regulation of compressor and seriously affects the production of enterprises. In order to make the compressor automatically adjust workloads without stopping the machine to achieve normal performance under flow regulation failure condition, the model of air distribution between cylinder and valves is constructed and a self-healing control method based on shrinkage reconfiguration and load redistribution of valve flow distribution network is proposed. When the failure of partial valve air flow regulation occurs, the self-recovery mechanism is realized by quickly isolating the fault actuators, forming a new control area and then finding a self-healing path to complete load adaptive allocation. The composition of the fault self-healing control system is introduced, and performance test is carried out. The results show that the self-healing control system can restrain the development of faults in the initial stage of faults deterioration and adjust the pressure fluctuation to the permissible range within 12 s. The results demonstrate that the self-healing control method can realize the recovery of compressor from gas regulation failure state without shutdown and the healthy operation of the equipment can be ensured.

Key words: reciprocating compressor, gas regulation failure, region contraction and reconstruction, adaptive load distribution, self-healing control

CLC Number:

TH457
TB126

WANG Yao, ZHANG Jinjie, ZHOU Chao, JIANG Zhinong, LIU Wenhua, SUN Xu. Research on Self-healing Control Method for Gas Regulation Failure in Reciprocating Compressor under Valve Fault Condition[J]. Journal of Mechanical Engineering, 2021, 57(12): 267-274.

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