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Title:
ROTOR ASSEMBLY FOR TURBINE, TURBINE, AND BLADE
Document Type and Number:
WIPO Patent Application WO/2016/076374
Kind Code:
A1
Abstract:
A rotor assembly for a turbine, provided with a rotor shaft and a plurality of blades, the rotor shaft having: two protruding parts; two bearing surfaces; two first opposing surfaces that constitute a portion of a wall surface of a blade groove that extends in the circumferential direction; and two second opposing surfaces that are positioned further outward than are the first opposing surfaces and are separated by an interval greater than that between the first opposing surfaces, the two second opposing surfaces facing each other in the axial direction of the rotor shaft and constituting a portion of the wall surface of the blade groove . The base part of each of the blades has: two abutting surfaces that are set apart from each other in the axial direction of the rotor shaft and are capable of respectively abutting the two bearing surfaces in the radial direction of the rotor shaft; two first side surfaces that respectively face the two first opposing surfaces; two second side surfaces respectively facing the two second opposing surfaces, the two second side surfaces being separated by an interval smaller than that between the first opposing surfaces and the first side surfaces; and two rim parts positioned respectively adjacent to the outer-peripheral surfaces of the two protruding parts.

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Inventors:
YAMAMOTO YUKI (JP)
Application Number:
PCT/JP2015/081793
Publication Date:
May 19, 2016
Filing Date:
November 11, 2015
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F01D5/02; F01D5/30
Foreign References:
JPH0763004A1995-03-07
JP2014040829A2014-03-06
JPH01131801U1989-09-07
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P. C. (JP)
誠真 IP patent business corporation (JP)
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