Title:
TURBINE ROTOR BLADE AND TURBINE
Document Type and Number:
WIPO Patent Application WO/2020/110257
Kind Code:
A1
Abstract:
A turbine rotor blade according to at least one embodiment is coupled to a rotary shaft, rotates around an axis, and comprises a hub having a hub surface inclined with respect to the axis in a cross section along the axis, and a plurality of rotor blades provided on the hub surface. In a throat section wherein the blade-to-blade distance between two adjacent rotor blades is the smallest, the value (Lt/r), which is the value when the blade-to-blade distance Lt at a given radial position is divided by the distance r from the axis at that radial position, assumes the maximum value at a position where the non-dimensional span length is in the range of 0.2 to 0.65 when a position on a base-end part on the hub side in the span direction of the rotor blades is defined as zero and a position on the tip-end side on the opposite side from the hub side is defined as 1.
Inventors:
CHIBA TAKERU (JP)
HOSHI TORU (JP)
HOSHI TORU (JP)
Application Number:
PCT/JP2018/043984
Publication Date:
June 04, 2020
Filing Date:
November 29, 2018
Export Citation:
Assignee:
MITSUBISHI HEAVY IND ENGINE & TURBOCHARGER LTD (JP)
International Classes:
F02B39/00; F01D5/14
Domestic Patent References:
| WO2018131167A1 | 2018-07-19 |
Foreign References:
| JPH09100701A | 1997-04-15 | |||
| JP2008133765A | 2008-06-12 | |||
| JP2011117344A | 2011-06-16 | |||
| JP2016098757A | 2016-05-30 | |||
| JP2003201802A | 2003-07-18 |
Other References:
See also references of EP 3786425A4
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (JP)
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