摘要
文章以3种不同参数和形式的600 MW汽轮机调节级为研究对象,通过数值模拟手段,研究了3种调节级在变工况下的性能,分析焓降、反动度、动静叶片的能量损失系数等参数随着工况的变化关系,探讨了大型电站汽轮机调节级的设计理念,分析结果表明:在进行调节级的设计时,应根据汽轮机的不同功能和运行方式特点,合理确定调节级的焓降值,不宜过大,同时动叶应具有一定的反动度。
Control stages of 600 MW steam turbine with three different parameters and forms were studied. By numerical simulations, this paper studied the performance of three control stages in variable operation conditions, analyzed the relationship of enthalpy drop, degree of reaction, moving and stationary blade＇s energy loss coefficient and other parameters changing along with operating conditions, and discussed the design concept of large steam turbine control stage, the analysis showed that before designing the control stage, basing on characteristics of different functions and operation modes of steam turbine, the enthalpy drop of control stage should be reasonable, and the rotor blade should have a certain degree of reaction.
出处
《东方汽轮机》
2015年第1期6-10,共5页
Dongfang Turbine
关键词
调节级
焓降
反动度
数值模拟
设计理念
control stage
enthalpy drop
degree of reaction
numerical simulation
design concept
