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Device and method for sealing a gas path in a turbine

a gas path and turbine technology, applied in the direction of machines/engines, liquid fuel engines, mechanical equipment, etc., can solve the problems of foreign material being released into the gas path, reducing the efficiency of the turbine, and premature failure,

Inactive Publication Date: 2013-07-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effects of this patent are not clearly stated and require further analysis and interpretation.

Problems solved by technology

Compressed working fluid that leaks around or bypasses the stator vanes or rotating blades reduces the efficiency of the turbine.
However, the reliefs in the strip seals weaken the strip seals, possibly leading to premature failure, increased maintenance, and / or foreign material being released into the gas path.

Method used

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  • Device and method for sealing a gas path in a turbine
  • Device and method for sealing a gas path in a turbine
  • Device and method for sealing a gas path in a turbine

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Embodiment Construction

[0016]Reference will now be made in detail to present embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms “first”, “second”, and “third” may be used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components.

[0017]Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment may be used on another embodiment to y...

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Abstract

A device for sealing a gas path in a turbine includes a first shroud segment and a slot in a surface of the first shroud segment. A barrier extends inside the slot, and a bypass channel in the slot provides fluid communication between the barrier and the slot to the gas path in the turbine. A method for sealing a gas path in a turbine includes placing a barrier between a first slot in a first shroud segment and a second slot in a second shroud segment and flowing a fluid between the barrier and the first slot to the gas path in the turbine, wherein the fluid flows through a first bypass channel in the first slot.

Description

FIELD OF THE INVENTION[0001]The present disclosure generally involves a device and method for sealing a gas path in a turbine.BACKGROUND OF THE INVENTION[0002]Turbines are widely used in a variety of aviation, industrial, and power generation applications to perform work. Each turbine generally includes alternating stages of peripherally mounted stator vanes and rotating blades. The stator vanes may be attached to a stationary component such as a casing that surrounds the turbine, and the rotating blades may be attached to a rotor located along an axial centerline of the turbine. A compressed working fluid, such as steam, combustion gases, or air, flows along a gas path through the turbine to produce work. The stator vanes accelerate and direct the compressed working fluid onto the subsequent stage of rotating blades to impart motion to the rotating blades, thus turning the rotor and performing work.[0003]Compressed working fluid that leaks around or bypasses the stator vanes or rot...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01D11/08
CPCF01D11/005
Inventor WINN, AARON GREGORYMCGOVERN, KEVIN THOMASMEENAKSHISUNDARAM, RAVICHANDRAN
Owner GENERAL ELECTRIC CO