专利名称：Method for construction of water intake
portion of hydraulic machine
发明人：Kagehiko Yamamoto,Hideo Ito,Mizuho
Tanaka,Shoji Sato,Hidetoshi Togashi,IsaoYanagida,Yukio Yamaguchi,MutsuoSuzuki,Tadakazu Oguri,Hisanao Kita,JunzoKomatsu
申请号：US05/657272申请日：19760211公开号：US04134530A公开日：19790116
摘要：A water intake portion of a hydraulic machine consists of a casing and a speedring positioned between the casing and guide vanes for guiding water from the casing tothe guide vanes. The speed ring consists of a pair of upper and lower flat members of aring form, a plurality of stay vanes positioned between the aforesaid pair of members forinterconnecting same rigidly, and a reinforcing member of a cylindrical form, which iswelded to the top surface of the upper flat member between the inner and outercircumferential edges of the upper flat member. Edges defining therebetween anopening of this casing are welded to the top surface of the upper flat member of a ringform, of the speed ring in the position between the aforesaid reinforcing member andthe outer circumferential edge of the upper flat member, as well as to the undersurfaceof the lower flat member of a ring form, respectively. In this respect, the welding of thereinforcing member of a cylindrical form to the top surface of the upper flat member of
a ring form is followed by the welding of the edges of the opening of the casing to theupper and lower flat members of a ring form.
申请人：HITACHI, LTD.
代理机构：Craig & Antonelli
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