摘要
在寒冷地区,传统大型供热机组供热模式在能源梯级利用方面存在很大缺陷,供热抽汽压力设定不合理,致使机组的做功能力下降,调峰能力不高。提出了可采用两台大型供热机组热网加热器串联运行,在第一台机组热网加热器前增设小背压机组的新模式。该模式不仅能较好地降低第一台机组供热抽汽压力至合理值,还能增加供热机组的发电量。另外,还可以用背压机带动电动压缩式热泵,增大了机组的对外供热能力,降低了机组的发电出力,提高了大型供热机组深度参与电网的调峰能力。
Traditional heating mode of large heating units has a prodigious defect in the energy cascade utilization in cold region,and the Heating steam pressure is not reasonable .Leading to reduced unit load and Peaking capacity is not high .A new model is proposed on two heat exchangers were series operation and a small back -pressure turbine was placed before the heat exchanger of first large heating unit heater ,so as to increase the generating capacity of heating unit and can reduce the first unit heating extraction steam pressure to a reasonable value .In addition ,also can use the samll back pressure turbine driven electric compression type heat pump ,so as to increase the external heating capacity and reduce the heating unit power output and improve the regulating ability of power network .
出处
《汽轮机技术》
北大核心
2014年第1期69-71,共3页
Turbine Technology
关键词
大型供热机组
供热模式
电网调峰
供热抽汽参数
large heating units
heating mode
power network peak regulation
extraction steam parameters
