锅浪跷水电站水轮机蜗壳的安装与焊接技术  

Installation and Welding of Spiral Case in Guolangqiao Hydropower Station

作　　者：李万有 杨小军[2] 杨宏 Li wanyou;Yang xiaojun;Yanghong(Datang Ya'an Electric Power Development Co.,Ltd Sichuan Ya'an 625000;Sichuan Ertan International Engineering Consulting Co.,Ltd.,Sichuan,Chengdu 610072)

机构地区：[1]大唐雅安电力开发有限公司,四川雅安625500 [2]四川二滩国际工程咨询有限责任公司,四川成都610072

出　　处：《四川水力发电》2023年第4期81-84,93,共5页Sichuan Hydropower

摘　　要：结合锅浪跷水电站3号机组的蜗壳安装与焊接出现的焊接缺陷,从后续的处理措施、处理过程和结果来看,要保证蜗壳安装焊接质量,除加强焊接前的焊接工艺、焊接顺序及方案等技术准备外,焊接过程更要注意减少焊接残余应力,加强焊接环境控制及焊接过程中的预热、后热、层间打磨、焊条保温等精细化管理。所采取的质量管理及技术调整措施,可为其它电站在蜗壳焊接过程中预防焊接缺陷提供参考。Combined with the welding defects in spiral case installation and welding of Unit#3 of Guolangqiao Hydropower Station,from the follow-up treatment measures,processing procedure and results,to ensure the welding quality of spiral case installation,in addition to strengthening the technical preparation of welding process,welding sequence and plan,more attention should be paid to reducing welding residual stress during welding,strengthening the control of welding environment and the fine management of preheating,post-heating,interlayer grinding and electrode insulation in the welding process.The quality management and technical adjustment measures adopted can provide a reference for other power stations to prevent welding defects in the process of spiral case welding.

关 键 词：水电站 蜗壳 安装 焊接 

分 类 号：TM622[电气工程—电力系统及自动化] TV734.1[水利工程—水利水电工程] TK36[动力工程及工程热物理—热能工程]