Title:
蒸気タービン
Document Type and Number:
Japanese Patent JP7370226
Kind Code:
B2
Abstract:
A steam turbine includes a rotary shaft configured to rotate about an axis, a rotor blade including a rotor blade body extending radially outward from the rotary shaft, and a shroud on an end outside in a radial direction, a casing enclosing the rotor blade from outside in the radial direction and including a cavity accommodating the shroud on an inner circumference of the casing, a plurality of seal fins protruding radially inward from an opposing surface that faces the shroud in the cavity such that a clearance is between an outer circumferential surface of the shroud and the plurality of seal fins, and a plurality of swirl breaks upstream of the plurality of seal fins located furthest upstream in a direction of the axis in the cavity, the plurality of swirl breaks being arranged at intervals in a circumferential direction.
Inventors:
岩▲崎▼ 真人
Rinpei Kawashita
Katsuya Yamashita
Rinpei Kawashita
Katsuya Yamashita
Application Number:
JP2019208744A
Publication Date:
October 27, 2023
Filing Date:
November 19, 2019
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F01D11/08; F02C7/28; F16J15/447
Domestic Patent References:
| JP2011052645A | ||||
| JP2008101614A | ||||
| JP2012137006A | ||||
| JP2014066134A | ||||
| JP2021036136A |
Foreign References:
| WO2014162767A1 | ||||
| US20160138413 | ||||
| US20160341058 |
Attorney, Agent or Firm:
Yasushi Matsunuma
Eisuke Ito
Hiroyuki Hashimoto
Ancient city Satoshi
Koichiro Kamada
Eisuke Ito
Hiroyuki Hashimoto
Ancient city Satoshi
Koichiro Kamada