当胀差超过警戒值时，如没有控制汽轮机胀差的有效措施，只能打闸停机。
If the differential expansion is beyond the guard - line and no effective measures are taken to control the differential expansion, the only way is to switch off and stop the turbine.
汽轮机相对胀差上下极限值是根据汽轮机的结构、材料、安装轴向的间隙尺寸等因素综合考虑规定的。
The limit value of the steam turbine's relative differential expansion is stipulated synthetically according to the structure, material and the installational axial gap size and so on.
汽轮机差胀反映出汽轮机动静部分的间隙变化，是保护汽轮机安全运行的重要参数之一。
The difference expansion of the steam turbine reflects the gap change between the dynamic and static parts of the turbine, which is one of the important parameters to protect its safe operation.
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