某电厂上蒸汽管道（273×20mm）在运行中，门阀受损问板脱落井被高压蒸汽吹冲离开原位置，造成停机事故。为了尽快排除故障，恢复生产，需更换间阅寻找并取出脱落的闸板。闸板己被高压蒸汽吹冲离开原位置数十米，蒸汽育的走向并不是直线，闸板的寻找很棘手。一般采用破坏性的割 A power plant on the steam pipe (273 × 20mm) in operation, the door valve damaged board off the high-pressure steam blowing off from the original position, resulting in downtime. In order to troubleshoot as soon as possible, resume production, need to be replaced to read and find out and take off the gate. The gate has been blowing high-pressure steam blow away from the original location of tens of meters, the direction of steaming is not a straight line, looking for the gate is very tricky. Generally use destructive cutting