高位布置汽轮发电机组回热系统疏水方式优化与热经济性比较  

Optimization and Thermal Economy Comparison of Drainage Method of the Regenerative System in High-level Layout Power Plant

作　　者：杜威 焦林生 王志强 李宁 DU Wei;JIAO Lin-sheng;WANG Zhi-qiang;LI Ning(State Grid Hebei Energy Technology Service Co.,Ltd.,Shijiazhuang 050000,China;National Energy Shaanxi Guohua Jinjie Energy Co.,Ltd.,Yulin 719000,China)

机构地区：[1]国网河北能源技术服务有限公司,石家庄050000 [2]国能陕西国华锦界能源有限责任公司,榆林719000

出　　处：《汽轮机技术》2022年第1期49-52,共4页Turbine Technology

摘　　要：由于布置的局限,全高位布置的汽轮发电机组回热系统可能出现上一级加热器的布置位置明显低于下一级加热器的情况,若采取常规的疏水逐级自流方式,极易出现疏水不畅、汽化,引起疏水管道振动等问题。为确保该类机组的经济、安全运行,提出了多种优化方案,并从可行性、热经济性、安全性对其进行了比较和分析,选出了最优方案。Due to the limitation of the layout,the regenerative system in High-level Layout turbo-generator may have a situation where the heater of the previous stage is arranged significantly lower than the heater of the next stage.If the conventional step-by-step gravity flow method is adopted,it is easy to cause problems such as poor drainage,vaporization,and vibration of drainage pipes.In order to ensure the economical and safe operation of this type of unit,this paper proposes a variety of optimization schemes,and compares and analyzes them from the perspective of feasibility,thermal economy,and safety,and selects the optimal scheme.

关 键 词：全高位布置 回热系统 疏水方式 热经济性 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]