背压变化对汽轮机功率影响的计算修正  

Rectification and Calculation the Effect on Turbine Power of Back Pressure Variation

作　　者：林湖[1] 周兰欣[1] 胡学武[2] 姚雅秋[1] 郭锦鹏[1] 丁千玲[1] 陆海清[1] 

机构地区：[1]华北电力大学动力工程系,河北保定071003 [2]天津大港电厂,天津300000

出　　处：《汽轮机技术》2004年第1期18-20,共3页Turbine Technology

摘　　要：凝汽器压力在一定条件下可认为是汽轮机背压,背压变化对机组的功率有很大的影响。把机组变工况和热力系统变工况理论结合起来,对系统进行分析计算,对现有的通用曲线进行修正,提出有效的修正系数,提高计算的实用性和精确度,扩大计算的适应范围。所得结果能适应不同系统结构及负荷变化的需要,具有一定的实用价值。In some condition, condenser pressure is equal to the back pressure of the turbine. Back pressure variation affects the assembly power greatly and relates directly to the efficient performance and safety of running turbine. So it is necessary to analyze the relationship between back pressure variation and turbine power. Based on theories of assembly variable condition and thermal power system variable condition, system is analyzed and calculated, and universal curve is rectified with efficient coefficient. The conclusion adapts to different system structure and different load, and has higher accuracy class, so it is available to wider application.

关 键 词：背压 汽轮机功率 影响 修正 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]