某600 MW机组汽轮机低压缸切除改造  

Application of LP Cylinder Cutting Technology in a 600 MW Steam Turbine Unit

作　　者：王骐 刘亚南 刘网扣 Wang Qi;Liu Yanan;Liu Wangkou(Kaifeng Power Generation Branch,Henan Electric Power Co.,Ltd.,Kaifeng 475000,Henan Province,China;Henan Electric Power Maintenance Engineering Co.,Ltd.,Zhengzhou 450016,China;Shanghai Power Equipment Research Institute Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]河南电力有限公司开封发电分公司,河南开封475000 [2]河南电力检修工程有限公司,郑州450016 [3]上海发电设备成套设计研究院有限责任公司,上海200240

出　　处：《发电设备》2019年第5期366-370,共5页Power Equipment

摘　　要：对低压缸切除改造技术在某600MW机组上的应用进行了介绍,对低压缸切除进行安全性校核后,详细介绍了连通管改造、旁路冷却蒸汽改造、汽轮机本体改造、热工控制改造等方案,并对改造后机组性能进行了分析。结果表明:机组实现了热电解耦,同时供电煤耗大幅降低,供热经济性提升。An introduction is presented to the application of low pressure (LP) cylinder cutting technology in a 600 MW unit.After the low pressure cylinder was switched off,a safety checking was conducted on the unit,following which,retrofit schemes were discussed in detail,covering the connection pipe,cooling steam bypass system,steam turbine property,and the thermal control system,etc.Moreover,an analysis was carried out on the performance of the unit.Results show that the unit has realized thermoelectric decoupling after cutting the LP cylinder,when the coal consumption of power supply is greatly reduced and the heat supply economy is obviously improved.

关 键 词：火电机组 供热方案 安全性校核 调峰 

分 类 号：TK263.1[动力工程及工程热物理—动力机械及工程] TK267