沙角发电A厂200 MW汽轮机低压缸通流部分的改造

Flow path remaking for LP cylinder of 200 MW steam turb ine in Shajiao A Power Station

沙角发电A厂 2 0 0MW 1号国产三排汽轮机 ,与现代汽轮机相比 ,性能已相当落后 ,严重影响了电厂的“创一流”达标 ,必须对其低压缸通流部分进行改造来提高机组效率、出力及降低能耗。为此 ,介绍了 1号机汽轮机低压缸通流部分改造的方案 ,改造过程中遇到的问题和对策 ,改造效果及一些经验性的建议。

The Chinese-made 200 MW triple-flow steam turbine of Unit 1 in Shajia o A Power Station is very backward in performance as compared with modern turbin es. In order to improve the efficiency and output of the unit as well as to save energy, flow path remaking for the LP cylinder must be conducted. In this paper , the remaking scheme, the problems encountered and countermeasures as well as t he remaking effect are described. Some suggestions are proposed as well.