摘要
文章对乌江渡发电厂扩建工程2台水轮机蜗壳的安装进行总结,介绍蜗壳的拼装、挂装、焊接等施工工艺,以及在施工过程中遇到的如蜗壳瓦片成形差及周长超差、焊缝坡口设计不合理、蜗壳混凝土浇筑变形控制、高强钢的加温及保温焊接、焊后消氢处理等控制方法,特别详细地介绍了NK HITEN610U高强调质钢的焊接工艺及质量控制点,为今后水电站水轮机蜗壳施工工艺提供参考。
The article summarizes scroll case installation of two units for Wujiangdu power plant's extension project.The paper introduces scroll case installation processes such as assembling,hoisting,welding and etc.,as well as some control methods in different conditions such as the tile of scroll case taking shape difference and ultra difference in girth,the designed slope of welding seam being unreasonable,scroll case concrete placing deformation,high-strength steel heating and keeping warm welding,hydrogen treatment after welding and etc.specially recommending in detail the welding process and quality control point of the high strength adjusting-quality steel NK-NITEN610U.The experience cauld offer reference for scroll case construction process of hydropower station in the future.
出处
《贵州水力发电》
2004年第1期53-56,共4页
Guizhou Water Power
关键词
水轮发电机组
金属蜗壳
蜗壳拼装
焊接
乌江渡发电厂
扩建工程
蜗壳瓦片
hydraulic machinery,turbine-generator unit,metal scroll case,scroll assembling,scroll case hoisting,scroll case welding and detecting flaw,Wujiangdu power plant's extension project
