汽轮机调节阀中蒸汽流量的计算  

Calculation of Main Steam Flow in Various Control Valves of Steam Turbine

作　　者：张宝 顾正皓 童小忠 

机构地区：[1]浙江省电力公司电力科学研究院,杭州310014

出　　处：《发电设备》2012年第6期389-391,共3页Power Equipment

基　　金：国家电网浙江省电力公司科技项目资助(ZDK026-20121201)

摘　　要：获得汽轮机各调节阀中主蒸汽流量是进行汽轮机变工况分析的关键。在准确表征主蒸汽流量的基础上,结合流量与喷嘴出口压力呈椭圆关系这一规律,建立了汽轮机各调节阀中蒸汽流量计算模型,实现了汽轮机调节阀中蒸汽流量的计算。以一台300 MW汽轮机为例,验证了该方法的有效性。To perform various analyses of steam turbine under varying working conditions, it is very important to acquire the main steam flow in related control valves. Based on accurate characterization of the main steam flow, and in combination of the law between steam flow and nozzle outlet pressure （oval relation）, a model has been set up for calculation of steam flow in various control valves, with which relevant calculations are achieved. The case calculation for a 300 MW unit proves this method to be effective.

关 键 词：汽轮机 调节阀 蒸汽流量 临界压比 调节级 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]