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本文回顾了125MW机组二次完善化过程,分析了机组配汽机构所存在的问题及对高压缸效率所产生的影响,提出了合理配置喷嘴面积来改进高压缸效率和提高机组安全性的具体措施。本文还对早期出厂的前34台机组进行了大量的计算分析工作,给出了配汽机构的改进方案及改进后所能获得的效益。
In this paper, the revamping process of 125 MW units is reviewed. The problems existing in the steam distribution units of the units and their effects on the efficiency of the high pressure cylinders are analyzed. The specific measures to rationalize the nozzle area to improve the efficiency of the high pressure cylinders and improve the safety of the units are proposed . This paper also carried out a large amount of calculation and analysis work on the first 34 units in the early days of delivery. The improved scheme of the steam distribution mechanism and the benefits obtained after the improvement are given.