CAJ | 학술논문

就某发电厂350MW 三菱燃煤亚临界纯凝机组改造为抽汽供热机组,在热网投入运行后存在的主要技术问题进行分析,提出提高供热可靠性的措施.主要涉及热网疏水泵风扇电源改造,增加供热工况除氧器水位调节门函数曲线,机组 RB 保护逻辑修改研究,热网电动调整蝶阀 LV 改造为液压控制,热网最大抽汽量运行中热网跳闸处理,热网外管线大量泄漏对机组的影响,探索纯凝机组改造为抽汽供热机组的解决方案,为其它同类型机组改造设计提供参考和借鉴.
취모발전엄350MW 삼릉연매아림계순응궤조개조위추기공열궤조,재열망투입운행후존재적주요기술문제진행분석,제출제고공열가고성적조시.주요섭급열망소수빙풍선전원개조,증가공열공황제양기수위조절문함수곡선,궤조 RB 보호라집수개연구,열망전동조정접벌 LV 개조위액압공제,열망최대추기량운행중열망도갑처리,열망외관선대량설루대궤조적영향,탐색순응궤조개조위추기공열궤조적해결방안,위기타동류형궤조개조설계제공삼고화차감.
This paper analyzes the main technological problems on stream extraction heat supply unit (transformed from 350MWMitsubishi coal-fired subcritical straight condensing unit) of a power plant after heat supply network’s in service with reliable measures for improving heat supply. It mainly concerns about power supply reformation on drain pump fan of heat supply network, increasing function curve for level control value of deaerator of heat supply condition, logic modification study on unit RB protection, butterfly gate LV for motor-driven regulation of heat supply network transformed into hydraulic control, trip handling in the process of maximum stream extracting capacity for heat supply network and unit implication of abundance leakage on outer line pipe of heat supply network. The exploration on solutions (straight condensing unit transformed into stream extraction one)provide reference for other similar unit transformation.