N-38000型双背压凝汽器运行分析  

Operation optimization of an N-38000 dual-pressure condenser

作　　者：张利平[1] 李开拓[1] 王伟锋[2] 陈浩天[1] 

机构地区：[1]华北水利水电大学电力学院,河南郑州450045 [2]西安热工研究院有限公司,陕西西安710032

出　　处：《热力发电》2014年第7期135-138,共4页Thermal Power Generation

摘　　要：以某N-38000型双压凝汽器为研究对象,针对凝汽器低压侧和高压侧分别计算了在不同蒸汽负荷、冷却水入口温度以及单、双循环水泵运行时凝汽器的变工况特性。在此基础上运用等效热降法,综合考虑水资源的价格因素,计算了机组不同负荷下单、双循环水泵切换的最佳循环水入口温度。研究结果表明:当机组40%负荷运行时,单循环水泵运行较经济;机组负荷分别在60%、80%、100%负荷运行时单、双循环水泵切换的最佳循环水入口温度分别为25.1、22.3、17.6℃。The variable working conditions for both high and low pressure sides of an N-38000 type dual-pressure condenser was calculated,when this condenser was in single and dual water circulating pump operation,at different steam loads and cooling water inlet temperatures.On this basis, the equivalent heat drop method was applied to calculate the optimal inlet temperature of circulating water for suitching the single and dual circulating water pump,at different unit loads.The results show that,with the unit load of 40%,running single circulating water pump is more economical,while when the unit load is 60%,80% and 100%,the optimal inlet temperature of circulating water is 25.1 ℃,22.3 ℃ and 17.6 ℃,respectively.

关 键 词：N-38000型 双压凝汽器 变工况 微增功率 最佳循环水入口温度 

分 类 号：TK246.1[动力工程及工程热物理—动力机械及工程]