热力发电2017，Vol.46Issue(10)：71-75,5.DOI:10.3969/j.issn.1002-3364.2017.10.071
抽汽供热机组滑压压力优化计算
Optimization calculation for sliding pressure of steam turbine with extraction for heating
文乐 1杨新民 1王伟锋 1薛志恒1
作者信息
- 1. 西安热工研究院有限公司,陕西 西安710054
- 折叠
摘要
Abstract
In order to obtain the sliding pressures of steam turbine with extraction for heating,the matrix equation for steam and water in regenerative system was employed to analyze the characteristics of thermal power system under conditions with varying extraction flow,electrical loads and backpressures.On the basis of the unit's performance test data under pure condensing conditions,steam turbine valve discharge characteristics and output correction curves of backpressure,the optimization calculation method for the sliding pressure during heat supply period was put forward.Moreover,by taking a 350 MW unit as the example,this calculation method was applied to carry out varying load calculation on the basis of the rated-sliding pressure curves and test data,and the sliding pressures of this unit under conditions with different electricity loads,backpressures and extraction flows were obtained.The results show that,the proposed method is simple and effective,which has better practical engineering application and promotion value.关键词
抽汽供热机组/回热系统/汽轮机/定滑压运行/滑压压力/特性曲线/背压Key words
steam extraction for heating/regenerative system/steam turbine/rated-sliding pressure operation/sliding pressure/characteristic curve/back pressure分类
能源科技引用本文复制引用
文乐,杨新民,王伟锋,薛志恒..抽汽供热机组滑压压力优化计算[J].热力发电,2017,46(10):71-75,5.
