一种提高引进型300MW汽轮机调节级效率的方法  

A method to increase the efficiency of governing stage of introduced 300 MW steam turbine unit

作　　者：李建河[1] 李俊[1] 陈宝义[1] 刘长生[1] 马军[1] 朱小令[2] 

机构地区：[1]淮北国安电力有限公司,安徽淮北235106 [2]西安热工研究院有限公司,陕西西安710032

出　　处：《中国电力》2007年第9期76-78,共3页Electric Power

摘　　要：引进型300MW汽轮机组,一直存在调节级效率明显偏低的问题,严重影响整机效率。淮北国安电力有限公司与西安热工研究院有限公司合作,对调节级进行了技术改造,在不改变汽封结构形式,仍采用镶嵌式汽封的情况下,通过增加调节级叶顶汽封片数量,实现多级节流来减少漏汽损失,实现提高效率的目的,为同类型机组的优化改造提供了借鉴,具有较高的推广应用价值。The efficiency of governing stage on the introduced 300 MW turbine unit is much lower, which is seriously affecting the overall efficiency of unit. With the cooperation of Huaibei Guoan Power Co., Ltd. and Xi＇an TPRI, the governing stage was retrofitted. Without any changes in gland structure, the number of sealing strips on the blade top of governing stage was increased to reduce the steam leakage loss and improve the stage efficiency. It provides great reference for the optimization retrofit of the similar units with higher promotion value.

关 键 词：300MW汽轮机 调节级 汽封 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]