| 摘要 |
PROBLEM TO BE SOLVED: To improve a structure of a pump casing by introducing structural innovation in which an upstream side case and a downstream side case in a fluid flow direction are centered and connected with each other to avoid inconvenience such as troublesomeness in the design and assembly of the structure in which the centering is made with an interior structure provided between the both cases. SOLUTION: In a casing structure in which the casing is constructed by integrally connecting a plurality of cases C in the axial direction of the main shaft, a fitting portion K is formed for fitting in a fitting structure centered on the axes of the upstream side case 12 positioned upstream in the flow direction and the downstream side case 11 adjacent downstream in the flow direction out of a plurality of cases C, and an attachment 25 which causes the interior structure N mounted inside the casing to be fitted and supported radially inside of the fitting portion K at the upstream side 12 or the downstream side case 11 is formally constructed. COPYRIGHT: (C)2011,JPO&INPIT
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