碳化硅加热器在水电站水轮机转轮拆装中的应用  

Application of Silicon Carbide Heater in Disassembly and Installation of Turbine Runner of Hydropower Station

作　　者：范鹏飞 杨庆山 占鹏 FAN Peng-fei;YANG Qing-shan;ZHAN Peng(Yunnan United Electric Power Development Co.,Ltd.Kunming 650000,China)

机构地区：[1]云南联合电力开发有限公司,云南昆明650000

出　　处：《云南水力发电》2022年第4期213-215,共3页Yunnan Water Power

摘　　要：在水电站机组大修过程中,需要将水轮机主轴连接螺栓进行拆装。缅甸瑞丽江一级电站水轮机受转轮螺栓内孔直径限制,市场上的高电阻电热合金丝加热棒加热功率小、使用寿命短且价格昂贵,无法满足检修工作现场螺栓拆除的要求。针对该问题,提出用改造后的碳化硅加热棒来对转轮螺栓进行加热。实践表明,改造后的碳化硅加热棒从加热效率、使用寿命以及经济性均明显优于原来的高电阻电热合金丝加热棒。During the overhaul of hydropower unit,it is necessary to disassemble and assemble the connecting bolts of the turbine main shaft.Due to the restriction of runner bolt bore diameter,the turbine of Ruilijiang I Hydropower Station in Myanmar has low heating power,short service life and expensive price,which can not meet the requirement of bolt removal in overhaul work site.To solve this problem,a modified silicon carbide heating rod is proposed to heat the runner bolts.Practice shows that the modified silicon carbide heating rod is obviously superior to the original high resistance electric heating rod in terms of heating efficiency,service life and economy.

关 键 词：转轮更换 螺栓拆装 螺栓加热 碳化硅加热元件 

分 类 号：TK730.8[交通运输工程—轮机工程]