汽轮机进汽阀的卸载分析  

Analysis on Load-Release for Steam Turbine Inlet Valve

作　　者：何劲[1] 刘慧[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030

出　　处：《热力透平》2010年第1期68-70,共3页Thermal Turbine

摘　　要：汽轮机参数的提高将导致汽轮机进汽阀开启过程中承受巨大的蒸汽作用力,需要卸载才能开启阀门。本文通过对进汽阀的系统组成、运行控制过程、卸载结构的要素、压力平衡估算办法,以及卸载漏汽对启动过程的影响等多个方面进行分析,以便廓清汽轮机进汽阀卸载设计的思路,为进汽阀的卸载设计和运行提供参考。The turbine parameter increase will give rise to the great steam action force during the inlet valve start-up of steam turbine,resulting that valve can not be opened until load being dumped.In this paper,the issues are analyzed on inlet valve system composition,valve control start-up program,element of load-release structure,pressure balance evaluation method and effect of load-release leakage upon starting etc.to make the idea clear of inlet valve load-release design.

关 键 词：进汽阀 卸载方式 卸压结构 泄漏 密封性 阀切换 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]