摘要
大容量调峰机组的变压运行是近年来火电厂的重要发展趋势。分析了火电厂锅炉机组变压变流量运行的优点和可行性,以及变压运行对锅炉机组和给水泵的影响,并与传统的定压节流配汽方式进行了比较;推导了给水泵变压变流量运行方式应用于火电厂调峰机组时的调压范围和优化运行模型,该模型不仅全面考虑了供水指标、水泵的效率、模型求解运算量等问题,而且模型物理意义与实际工况相符,具有较强的实用性,对调峰机组的节能降耗具有研究意义。研究表明,变压运行能使锅炉效率提高3%左右,而给水泵的年节电量更可达30%￣60%。
The transformation run of big capacity adjusting peak set is the important trend of combusting coal plant in recent years. The merit and feasibility of optimium run to boiler set in combusting coal plant, and the influence of transformation run to boiler set and feeding water pump were analyzed particularly, and the comparison was done between them and traditional steady pressure throttle preparing stream mode; adjusting pressure range and optimized running mode was deduced for feeding water pump transformation running mode applied in combusting coal plant adjusting peak set. The mode takes into account of the feed water criterion, the efficiency of pump and the disposition of itself all-round, the physics signification of that accords with the practice, and it has important meaning to the saving energy and reducing consumption of adjusting peak set. It is testified that the efficiency of boiler could be increased 3%, and electricity consumption of pump could be saved 30%-60% with the use of transformation run.
出处
《排灌机械》
2006年第2期20-25,共6页
Drainage and Irrigation Machinery
关键词
调峰机组
给水泵
变压运行
优化模型
Adjusting peak set
Boiler feeding water pump
Transformation run
Optimize mode
