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METHOD OF ASSEMBLING CROWN OR BAND OF RUNNER AND METHOD OF ASSEMBLING RUNNER IN FRANCIS TYPE WATER TURBINE OR FRANCIS TYPE PUMP TURBINE
METHOD OF ASSEMBLING CROWN OR BAND OF RUNNER AND METHOD OF ASSEMBLING RUNNER IN FRANCIS TYPE WATER TURBINE OR FRANCIS TYPE PUMP TURBINE
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机译:弗朗西斯式水轮机或弗朗西斯式水轮机的流道或流道的组装方法及流道的组装方法
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摘要
PROBLEM TO BE SOLVED: To provide a method of assembling a crown or a band, restraining welding deformation, avoiding large-scale machining, and not causing a welding defect at integrally welding and assembling the crown and the band which have been separated into a plurality of parts and transported in a site.;SOLUTION: The method of assembling the band 2 of a runner including a crown 1, the band 2 and blades 3 in a Francis type water turbine or a Francis type pump turbine includes: a temporary welding process of welding with a welding amount smaller than a welding amount with respect to the whole beveling area of a section along the dividing line in temporary welding along dividing lines of the divided bands 2, and weld padding up to a water flowing surface near a crossing part with the blade 3; and a process of grinder-shaping the welds near the crossing parts 5a up to the water flowing surfaces. The crown 1 is also assembled similarly.;COPYRIGHT: (C)2011,JPO&INPIT
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