200MW苏制汽轮机中压缸温差大的原因分析

Temperature Analysis of the Big Gap Between the Upper and Lower Casing in the Steam Turbine's Intermediate Pressure Cylinder Madw By Former USSR

针对神头第一发电厂二单元 2台苏制汽轮机投产以来一直存在中压缸温差大的问题 ,从系统、保温和停机方式几方面分析了其原因 ,并给出相应的整改措施 。

The temperature-related problem of the big gap between the upper and lower casing has been existent since the two steam turbines (K-200-130-3 made by the former USSR in the second unit of the Shentou power plant) were put into operation. The problem can be discovered by the records of the start-up and shutdown of the unit, which seriously affect the safe operation and warming start-up. The analysis of the problem, which is the key point, has been conducted in this dissertation.