一、故障现象2011年11月20日,克拉玛依石化公司600MW连续重整汽轮机安装完成,具备试车条件,准备空负荷试运转。当紧急停车系统(ESD)启动条件刚满足、现场和室内均未按下启动按钮时,汽轮机的主蒸汽阀开始打开,并迅速达到全开,汽轮机立即飞速转起来。现场操作人员立即按下紧急停机按钮,才避免了一起事故的发生。二、检查过程由于汽轮机的主蒸汽阀是靠电液转换器(图 First, the fault phenomenon November 20, 2011, Karamay Petrochemical Company 600MW continuous reformer turbine installation is completed, with test conditions, ready to test run at no load. When the emergency stop system (ESD) activation conditions were met and neither the scene nor the interior had pressed the start button, the main steam valve of the steam turbine began to open and quickly reached full open, and the turbine turned immediately rapidly. Site operators immediately press the emergency shutdown button, to avoid the occurrence of an accident. Second, the inspection process Because the main steam turbine steam valve is based on electro-hydraulic converter (Figure