热力发电Issue(12)：14-18,24,6.DOI:10.3969/j.issn.1002-3364.2014.12.014
高压调节阀配置方式对机组运行经济性的影响
Effect of regulating valve configuration mode on unit operation efficiency
摘要
Abstract
The relationship between regulating valve configuration mode and inlet steam pressure of the tur-bine was discussed.Taking a supercritical and a subcritical 600 MW unit as the examples,the operation ef-ficiencies of the two units under different regulating valve configuration modes were calculated in detail. The difference of heat rate changing rule between the above two units in constant pressure operation mode and sliding pressure operation mode of the sequence valve was pointed out.Moreover,with different num-bers of the regulating stage nozzle controlled by each high pressure valve,the variation rule of heat rate in different regulating value configuration modes and the configuration principle were put forward.Also,the effect of overlap degree was quantitatively analyzed.The results show that,configuration mode of the regu-lating valve has significant influence on the unit's efficiency.For the unit with four high pressure regulating valves,if the regulating valve was opened early,with every 2% increase in the pressure loss,the unit heat rate increases by about 1 3 kJ/(kW.h)to 1 5 kJ/(kW.h)in two-valve-point,only about 5 kJ/(kW.h)to 6 kJ/(kW.h)in three-valve-point and a slight little in-less-than-two-valve-point.关键词
高压调节阀/配置方式/重叠度/定压运行/滑压运行/热耗率Key words
high pressure regulating valve/configuration mode/overlap degree/fixed pressure operation/slide pressure operation/heat consumption rate分类
能源科技引用本文复制引用
江浩,常东锋,蒋辉,黄嘉驷,李欣,李钊,王勇..高压调节阀配置方式对机组运行经济性的影响[J].热力发电,2014,(12):14-18,24,6.基金项目
华能集团重点科技项目(HNKJ12-H73) （HNKJ12-H73）
