US 12,270,302 B2
Turbine
Atsushi Nakagawa, Tokyo (JP); and Eiji Konishi, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 18/031,275
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Oct. 19, 2021, PCT No. PCT/JP2021/038576
§ 371(c)(1), (2) Date Apr. 11, 2023,
PCT Pub. No. WO2022/113570, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 2020-195481 (JP), filed on Nov. 25, 2020.
Prior Publication US 2023/0374907 A1, Nov. 23, 2023
Int. Cl. F01D 11/00 (2006.01); F01D 9/04 (2006.01); F01D 11/02 (2006.01); F04D 19/00 (2006.01); F04D 29/68 (2006.01)
CPC F01D 11/001 (2013.01) [F01D 9/04 (2013.01); F01D 9/041 (2013.01); F01D 11/02 (2013.01); F04D 29/68 (2013.01); F04D 19/00 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A turbine comprising:
a rotor that includes a rotor main body rotatable around an axis and a plurality of rotor blades arranged in a circumferential direction along an outer peripheral surface of the rotor main body;
a casing that covers the rotor; and
a plurality of stator vanes that are arranged in the circumferential direction along an inner peripheral surface of the casing,
wherein the stator vanes each include
a stator vane main body that extends in a radial direction with respect to the axis and that includes a surface in which a suction portion, through which at least a portion of a working fluid flowing from one side to the other side in a direction along the axis is suckable, is formed,
a nozzle inner peripheral member that is provided inside the stator vane main body in the radial direction, and
a plurality of seal fins that protrude radially inward from an inner peripheral surface of the nozzle inner peripheral member and that are arranged at intervals in the direction along the axis, and
an ejection port through which the working fluid introduced through the suction portion is ejected is formed in the nozzle inner peripheral member and in a portion of the seal fin that is closer to the other side in the direction along the axis than the seal fin closest to the one side in the direction along the axis is,
wherein the suction portion includes a trailing edge side suction port formed at a position on a suction surface of the stator vane main body that is close to a trailing edge side, the trailing edge side suction port extending over an entire region in the radial direction.