Analysis and Treatment of Local Deformation of Volute Seat Ring in a Hydropower Station
This paper introduces the deformation phenomenon of the seat ring during the installation of Nam Hsi Long 4 hydropower station project in Vietnam.Through on-site data testing and literature analysis,it is believed that the main causes of deformation are thermal deformation caused by overlay welding at the segmented section of the volute,as well as the influence of the welding sequence of the two side rib plates at the water inlet of the seat ring on the deformation of the seat ring.The deformation treatment method is to recheck the level after pouring the snail shell concrete,and then perform appropriate scraping and grinding treatment on local high points to achieve normal operation effect.
国家科技期刊平台
NSTL
万方数据
