引风机驱动汽轮机排汽压力高原因分析  

Cause Analysis of High Exhaust Steam Pressure of Driving Steam Turbine of Induced Draft Fan

作　　者：张家宽 张友辉 程东涛[3] Zhang Jiakuan;Zhang Youhui;Cheng Dongtao(Huaneng Shantou Haimen Power Production Co., Ltd., Shantou 515132, Guangdong Province,China;Huaneng Taicang Power Co., Ltd., Taicang 215424, Jiangsu Province, China;Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China)

机构地区：[1]华能汕头海门发电有限责任公司,广东汕头515132 [2]华能太仓发电有限责任公司,江苏太仓215424 [3]西安热工研究院有限公司,西安710054

出　　处：《发电设备》2021年第6期446-449,共4页Power Equipment

基　　金：中国华能集团有限公司总部科技项目(HNKJ17-H13)。

摘　　要：提出了引风机驱动汽轮机排汽压力影响因素的定性和定量分析方法,以某1000 MW机组汽动引风机为例,查找出冷却水流量偏小和真空泵抽吸能力不足是引起引风机驱动汽轮机排汽压力高的主要原因,并针对性地提出改进建议,可为同类型机组设计选型及改造方案制定提供参考,为引风机驱动汽轮机排汽压力高原因分析工作提供了分析思路和方法。A method for quantitative and qualitative analysis of influential factors on the exhaust steam pressure of driving steam turbine of induced draft fan was proposed.Analysis based on a 1000 MW power generator unit was found that lower flow rate of cooling water and insufficient suction capacity of the vacuum pump were the mainly reasons for higher exhaust steam pressure of the driving steam turbine of induced draft fan.The improvement suggestions are proposed to offer the reference for the design and transformation of same type units and provide the ideas and methods for the cause analysis of high exhaust pressure of driving steam turbine of induced draft fan.

关 键 词：引风机 驱动汽轮机 排汽压力 原因分析 冷却水 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]