汽轮机通流改造后偏心运行中旁路原因探讨及解决方案

Discussion on Causes of Bypass in Eccentric Operation after Steam Turbine Throughflow Reconstruction and Its Solution

华夏电力公司对四台机组进行汽轮机高低压缸通流改造,改造后,每台汽轮机偏心通道都出现过运行中旁路、偏心测量数值无显示现象。对查找原因的详细过程和最终解决方案进行归纳整理,方便人们处理同类型汽轮机改造后的偏心测量问题,推广应用价值较高。

Huaxia electric power company has carried out the transformation of turbine’s high and low pressure cylinder through four units.After retrofitting,every steam rtbuine eccentric channel has appeared in operation bypass and eccentric measurement value.The detailed process and final solution fo r finding the cause are summarized.It is convenient for people to deal with the eccentric measurement of the same type of stea m turbine after retrofit.The scheme has high popularization an d application value.