Title:
MULTISTAGE CENTRIFUGAL FLUID MACHINE
Document Type and Number:
WIPO Patent Application WO/2014/171209
Kind Code:
A1
Abstract:
In order to eliminate the need for secondary processing for providing positioning in the axial direction in a shear key section when shear keys are used in a barrel-type casing in a high-pressure uniaxial multistage fluid machine, a multistage centrifugal fluid machine (200) is equipped with a cylindrical outer casing (2), and an inner casing (1) which fits into this outer casing, with a flow path for an operating gas being formed between the inner casing and a rotor. The inner casing is secured at one end of the outer casing by means of shear keys (21, 22). Inner barrels (4) of the inner casing are configured with a first inner barrel group and a second inner barrel group, with the first inner barrel group and the second inner barrel group respectively being fastened by means of tie bolts (141, 143) provided at multiple locations in the circumferential direction. Furthermore, the interval between groove parts provided on the outer circumference of each inner barrel group is joined by means of multiple connecting members (122).
Inventors:
YANAGIHARA KAZUTOSHI (JP)
MIURA HARUO (JP)
MIURA HARUO (JP)
Application Number:
PCT/JP2014/055546
Publication Date:
October 23, 2014
Filing Date:
March 05, 2014
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
F04D29/42; F04D17/12
Foreign References:
| US3153383A | 1964-10-20 | |||
| JPS55137295U | 1980-09-30 | |||
| GB956731A | 1964-04-29 | |||
| JP2003269390A | 2003-09-25 | |||
| JPS6067797A | 1985-04-18 |
Attorney, Agent or Firm:
POLAIRE I. P. C. (JP)
Polaire Intellectual Property Corporation (JP)
Polaire Intellectual Property Corporation (JP)
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