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。了解差胀的概念、测量原理及变化趋势,就可以在机组启动及运行期间,通过监视差胀的参数变化,结合绝对膨胀、轴向位移等汽轮机滑销系统参数的变化情况,判断汽轮机动静部分的状态。在参数异常时采取相应的调整措施,避免发生动静部分的摩擦。 Steam turbine differential expansion reflects the turbine static and dynamic part of the gap changes, is to protect the safety of steam turbine operation is one of the important parameters. Understanding of the concept of differential expansion, measurement principle and trend of change, you can start and run the unit by monitoring the parameters of differential expansion, combined with absolute expansion, axial displacement turbine slip system parameters such as changes in the judge turbine dynamic and static part status. When the parameters are abnormal, take corresponding adjustment measures to avoid the friction between the static part and the static part.