海洋钻井天车升沉补偿系统隔离阀设计及仿真研究

Design and Simulation of Isolation Valve for Offshore Drilling Crown-block Heave Compensation System

为了保障海洋钻井天车升沉补偿系统正常工作,遇到钻井事故时保证人员和设备的安全,根据系统工作原理设计了隔离阀的液压系统原理图,搭建AMESim仿真模型,进行动态特性分析和结构参数优化。结果表明:设计的液压系统具有自动关闭、手动关闭、保持常开和复位的功能,满足实际工况的需求;通过NLPQL算法进行结构参数优化,优化后隔离阀响应时间缩短,发生钻井事故时天车速度明显降低,性能显著提高;隔离阀关闭过程中无压力冲击现象,系统运行平稳。

An isolation valve hydraulic system schematic is designed according to working principle of the system in order to ensure normal operation of offshore drilling crane heave compensation system and ensure safety of personnel and equipment in case of a drilling accident. An AMESim simulation model is set up to carry out dynamic analysis and structural parameter optimization. The results show that the designed hydraulic system has the functions of automatic closing,manual closing,maintaining normal opening and resetting. It can meet the requirements of actual working conditions. Using the NLPQL algorithm to optimize structural parameters,we can make response time of isolation valve shorten,and speed of overhead crane is significantly reduced when a drilling accident occurs,and the performance is significantly improved. There is no pressure shock during the closing of isolation valve and the system runs smoothly.