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一、前言目前国内外的大型高水头电站,一般都系采用壳承受内水压力,而壳外围之砼层则承受发电机下层结构传下之荷重,并在两者之间铺设垫层,以保证各自的静力工作条件。在这种设计原则下,由于大型枢纽水头较高,因此壳厚度也是较大的。如哈尔滨工大会研究某大型枢纽水轮机壳焊接问题中有关壳尺寸及重量如下表:
I. Introduction At present, large-scale high-head hydropower plants at home and abroad generally adopt the shell to bear the internal water pressure while the concrete shell on the outer periphery of the shell withstands the load transmitted from the lower structure of the generator and lay a cushion between the two To ensure their own static working conditions. Under this design principle, the shell thickness is also larger due to the higher head of the large hub. Such as the Harbin Assembly to study a large pivot turbine shell welding problems related to shell size and weight in the following table: