某核电汽轮机组高中压缸轴瓦两侧温差大原因分析  

Analysis on Unit HIP Cylinder's Bush Differential Temperature of Fore-and-aft Axle

作　　者：张巍 楼昕皓 张献峰 王继承 王琇峰[2] 殷东升 ZHANG Wei;LOU Xinhao;ZHANG Xianfeng;WANG Jicheng;WANG Xiufeng;YIN Dongsheng(Nuclear Power Operation Management Co.,Ltd.,Jiaxing Zhejiang,314300;School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an Shaanxi,710049;Suzhou Veizu Equipment Diagnosis Technology Co.,Ltd.,Suzhou Jiangsu,215200)

机构地区：[1]中核核电运行管理有限公司,浙江嘉兴314300 [2]西安交通大学机械工程学院,陕西西安710049 [3]苏州微著设备诊断技术有限公司,江苏苏州215211

出　　处：《东方汽轮机》2024年第2期70-74,共5页Dongfang Turbine

摘　　要：某核电厂1 000 MW半速汽轮机组大修后启机过程中高中压缸1#轴瓦两侧温差最大达20℃,相较同型号机组对应轴瓦两侧温差明显偏大。通过分析造成1#轴瓦两侧温差大的因素,并于该机组2022年4月大修期间进行1#轴承(座)倾角测试与故障排查试验,最终研究发现造成1#轴瓦两侧温差大的原因是汽缸滑销系统运动不畅造成的轴瓦倾斜。文章的研究结果,对避免汽轮机轴承金属温差大的故障重复发生以及确保机组安全可靠运行提供了参考。The maximum temperature difference is 20℃between the two sides of the bearing pad of a 1000 MW steam turbine unit in a nuclear power plant during start-up process after overhaul,which is obviously larger than that of the corresponding bearing pad of the same type of unit.By analyzing and investigating the factors that caused the large temperature difference between the two sides of 1#bearing pad,during the major overhaul of the unit in April 2022,1#bearing(pedestal)inclination test and troubleshooting experiment were carried out,the final study found that the reason for the large temperature difference between the two sides of 1#bearing pad was the bearing tilt caused by the poor sliding of the sliding pin system.The research results of this paper provide a reference for avoiding the repeated failure of the large temperature difference of the steam turbine bearing metal and ensuring the safe and reliable operation of the unit.

关 键 词：汽轮机 可倾瓦轴承 温差 

分 类 号：TK268[动力工程及工程热物理—动力机械及工程]