供热机组给水回热系统优化及收益分析  

Optimization and Income Analysis of Feed-water Regenerative System in Heat-supply Turbine Sets

作　　者：高秀志[1] 谢林贵 杨浩 Gao Xiuzhi;Xie Lingui;Yang Hao(Dongfang Turbine Co.,Ltd.,Deyang Sichuan,618000)

机构地区：[1]东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2018年第1期18-22,共5页Dongfang Turbine

摘　　要：供热机组给水回热系统热力设计不能简单套用纯凝发电机组的设计模式,所有给水加热器不应该都以同一热力工况TMCR/VWO作为设计工况,而应该是部分给水加热器以纯凝发电工况作为设计工况,其他给水加热器以供热工况作为设计工况;供热期间给水加热器不再都采用逐级自流疏水,而是有部分给水加热器采用跨级疏水;为保证供热期间正常疏水畅通、充分利用正位差,适当调整了某些给水加热器的布置标高。通过采用上述措施,能够提高供热期间的热力循环效率。Thermodynamic design of feed-water regenerative system for heat-supply turbine sets can't apply simply the type for pure condensing generator sets.All feed-water heaters shouldn’t be designed on the same thermal condition TMCR/VWO.Some feed water heaters adopt pure condensing generation condition as design point and other heaters adopt heat-supply condition as design point.Not all feed-water heaters adopt step by step draining and some heaters adopt cross drain during the heat-supply period.Some heaters have been adjusted layout elevation so that normal drainage flows by making full use of positive elevation during heat-supply period.Thermodynamic cycle efficiency has been increased by adopting the above measures during the heat-supply period.

关 键 词：供热机组 给水回热系统 设计工况 逐级自流疏水 跨级疏水 热力循环效率 

分 类 号：TK223[动力工程及工程热物理—动力机械及工程]