660MW超超临界机组高压旁路减压阀振动异常分析与处理Cause Analysis and Treatment on Abnormal Vibration of High-Pressure Bypass Decompression Valve of 660 MW Ultra-Supercritical Unit
朱朝阳,胡洲,顾正皓
ZHU Chaoyang,HU Zhou,GU Zhenhao
摘要(Abstract)：
某600 MW超超临界机组高旁减压阀自投运以来一直存在高频振动的问题,经查发现第3级减压笼罩和底板发生了脱落。通过对减压阀振动情况的分析和计算,查明第3级减压笼罩和底板脱落的原因,并分析了由此可能产生的运行危害,最后基于分析计算对高旁减压阀进行了改造,通过增加减压等级,解决了高旁减压阀存在的高频振动大的问题,对高旁减压阀的设计选型及运行具有指导和借鉴意义。
There is high-frequency vibration in high-pressure bypass decompression valve of 600 MW ultrasupercritical unit since its operation. It is detected that the third-stage decompression casing and floor board have fallen down, the reason of which is detected by analysis and calculation of decompression valve vibration, and the consequent hazards during operation are also analyzed. Finally, the high-pressure decompression valve is retrofitted in accordance to the analysis and calculation. By increase of decompression level, the fierce high-frequency vibration in high-pressure bypass decompression valve is eliminated, which provides guidance and reference for design and type selection of high-pressure bypass decompression valve.
关键词(KeyWords)：
660 MW;超超临界;机组;高压旁路减压阀;振动
660 MW;ultra-supercritical;unit;high-pressure bypass decompression valve;vibration
基金项目(Foundation):
作者(Author):
朱朝阳,胡洲,顾正皓
ZHU Chaoyang,HU Zhou,GU Zhenhao
DOI: 10.19585/j.zjdl.2016.07.011
参考文献(References)：
- [1]聂雨,张燕平,黄树红,等.汽轮机旁路系统仿真建模[J].热能动力工程,2013,28(4):336-340.
- [2]邢志刚,张成智.超临界600 MW机组高旁阀内漏原因分析与处理[J].河南电力,2012(2):43-45.
- [3]闫玉峰.1 000 MW超超临界机组旁路系统的运行[J].山东电力技术,2011(5):15-18.
- [4]徐传堂,张大志.600 MW超临界汽轮机组高压旁路阀内漏原因分析及处理[J].节能,2009(7):54-55.
- [5]郑国,叶涛.300 MW汽轮机旁路系统高旁阀改造[J].电站辅机,2003(2):18-22.
- [6]张淑萍,黄荣国.300 MW汽机旁路系统高压蒸汽变换阀阀体应力计算[J].电站系统工程,2000,16(5):293-295.