Throttle mechanism and turbine

Patent metadata

Field	Value
Publication number	US-11719116-B2
Application number	US-202217827205-A
Country	US
Kind code	B2
Filing date	May 27, 2022
Priority date	Jun 16, 2021
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

There are provided a throttle mechanism and the like that are capable of easily changing a cross-sectional area of a flow path according to an operating state. The throttle mechanism in an embodiment is a throttle mechanism that controls a flow rate of a fluid flowing through a flow path, and is configured to make a cross-sectional area of the flow path change autonomously according to temperature.

First claim

What is claimed is:

1. A throttle mechanism for controlling a flow rate of a fluid flowing through a flow path, comprising:
a first flow path forming member in which a first through hole forming the flow path and a trench communicating with the first through hole are formed;
a second flow path forming member in which a second through hole forming the flow path is formed, the second flow path forming member movably installed inside the trench; and
a biasing member biasing the second flow path forming member in a moving direction of the second flow path forming member inside the trench, wherein
the biasing member includes:
a first biasing member installed on one side in the moving direction inside the trench; and
a second biasing member installed on the other side in the moving direction inside the trench,
a material that forms the first biasing member and a material that forms the second biasing member are different from each other in the tendency that a Young's modulus changes according to temperature, and
the throttle mechanism is configured to make the cross-sectional area of the flow path change by an overlapping portion of the first through hole and the second through hole varying in size as the second biasing member moves inside the trench according to temperature.

Assignees

• Toshiba Energy Systems & Solutions Corp

Inventors

• Iwai Shogo
• Ono Takahiro

Classifications

• F01D11/24 Primary

  by selectively cooling-heating stator or rotor components · CPC title

• F01D5/081

  Cooling fluid being directed on the side of the rotor disc or at the roots of the blades (F01D5/087 takes precedence) · CPC title

• F02C7/18

  the medium being gaseous, e.g. air {(F02C7/125 takes precedence)} · CPC title

• F16K31/002

  actuated by temperature variation (thermo-electric F16K31/025) · CPC title

• G05D23/025

  the sensing element being placed within a regulating fluid flow · CPC title