Design and Performance Analysis of Isolation Valve Group for Liquid Gas Storage Device

In order to ensure the normal operation of the liquid gas storage device and ensure the safety of personnel when equipment failure occurs, the hydraulic system principle of the isolation valve group is designed according to the working condition of the crane heave compensation device. At the same time, the system simulation model is built to analyze the dynamic characteristics. The results show that the designed isolation valve block has automatic shutdown, manual shutdown, and maintains normal opening and resetting functions, which meets system performance requirements. The NLPQL (Nonlinear Programming Quadratic Line search) algorithm is used to optimize the structural parameters, and the response time of the isolated valve group is shortened after optimization. After optimization, the speed of hydraulic cylinder is obviously reduced and the performance is significantly improved when equipment failure occurs. There is no pressure shock and pulsation during the closing process of the isolation valve group, and the dynamic characteristics of the system are good.