超临界600MW机组性能测试及分析  

Performance Test and Analysis of a Supercritical 600MW Unit

作　　者：王增建 

机构地区：[1]中国大唐集团科学技术研究院有限公司西北分公司,西安710065

出　　处：《机械工程师》2016年第5期69-71,共3页Mechanical Engineer

摘　　要：对某电厂1号汽轮机组进行了检修前的热力试验,在611MW下,经参数修正后机组热耗率为8308 k J/(k W·h),比热耗率设计值8120 k J/(k W·h)高188 k J/(k W·h)。高压缸效率为82.14%,中压缸效率为91.44%,经漏汽修正后为89.65%。机组热耗率偏高的主要原因是高、中压缸效率降低,调速汽门节流损失大,加热器端差偏离设计值。The thermal test of a steam turbine unit of a power plant is carried out before the maintenance. Unit heat consumption rate is 8308 k J/（k W·h） as the load is 611 MW, which is 188 k J/（k W·h） higher than the design value 8120 k J/（k W·h）. High pressure cylinder efficiency is 82.14%. Medium pressure cylinder efficiency is 89.65%.Reasons for the high heat consumption rate of the unit are that the efficiency high and intermedium cylinder is low, the throttle loss of speed governing steam door is large, and terminal temperature difference deviate from the design values.

关 键 词：汽轮机 热耗率 高压缸 汽封 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]