300MW供热发电机组热网循环水泵的变频节能改造

Variable frequency energy-saving reformation of water circulating pump in heat supply network of 300 MW cogeneration unit

介绍了300 MW供热发电机组热网系统的组成,分析了热网循环水泵运行中出现的问题,提出了热网的总供水流量由热网循环水泵出口调节阀调节改为热网循环水泵变频调节的变频节能改造方案。改造方案实施后,达到了降低机组运行维护费用、节能减排、提升热网供热安全系数、提高企业的经济效益和社会效益之目的。

The composition of the heat supply network system of300 MW cogeneration unit was introduced. The problems happened in operation of water circulating pump in heat supply network were analyzed. A variable frequency energy-saving reformation scheme for the water circulating pump in heat supply network was put forward. The total water supply flow of the heat supply network was regulated by the regulating valve installed in outlet of the water circulating pump originally; and in the reformation scheme the total water flow will be regulated by the reformed water circulating pump directly. After the scheme was implemented,the operation and maintenance cost of the unit was decreased; the heat supply safety factor of the heat supply network was increased; the economic benefit and the social effect of the enterprise were enhanced.