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Enhanced cloth seal

一种密封件、部件的技术，应用在布密封件领域，能够解决不能充分降低泄漏率等问题

Active Publication Date: 2013-06-26
GENERAL ELECTRIC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The newest cloth seal constructions rely on the cloth material to effect the seal, or otherwise employ some form of raised gasket that is closed whenever there is a pressure drop across only the cloth portion of the seal. Does not adequately reduce or eliminate leak rate

Method used

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  • Enhanced cloth seal
  • Enhanced cloth seal
  • Enhanced cloth seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Referring now to the drawings, in which like numerals represent like elements throughout the several views, FIG. 1 shows a schematic diagram of a rotating machine, such as a gas turbine engine 10 . Gas turbine engine 10 may include a compressor 15 . Compressor 15 compresses an incoming air stream 20 . Compressor 15 delivers compressed air stream 20 to combustor 25 . Combustor 25 mixes compressed air stream 20 with compressed fuel stream 30 and ignites the mixture to produce combustion gas stream 35 . Although only a single combustor 25 is shown, the gas turbine engine 10 may include any number of combustors 25 . The combustion gas stream 35 is then routed to a turbine 40 . Combustion gas flow 35 drives turbine 40 to produce mechanical work. The mechanical work produced in turbine 40 drives compressor 15 and an external load 45 (eg, generator, etc.).

[0033] Gas turbine engine 10 may run on natural gas, various types of syngas, and / or other types of fuels. Gas tur...

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PUM

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Abstract

A cloth seal for use with turbine components includes at least first and second cloth layers. One or more central shims are positioned between the first and second cloth layers, so as to block a leakage flow path through at least one of the cloth layers. Another shim is positioned on and seals the opposite side of the first cloth layer from the one or more central shims positioned between the first and second cloth layers so as to block another leakage flow path through at least one of the cloth layers. Yet another sealing shim may be positioned on the opposite side of the second cloth layer from the one or more central shims positioned between the first and second cloth layers to as to seal the opposite side of the second cloth layer and block another leakage flow path through at least one of the cloth layers.

Description

technical field [0001] The present subject matter relates generally to cloth seals for use with turbomachinery, such as gas turbine engines, and more particularly to a cloth seal through which surface leakage is reduced. Background technique [0002] In general, turbomachines (eg, gas turbine engines, etc.) include a primary air flow path therethrough. The primary airflow path typically includes the intake, compressor, combustor, turbine, and exhaust. Leakage of gas from, or into, the gas flow path is detrimental to overall engine performance and is generally otherwise undesirable. Gas path leaks can reduce gas turbine engine efficiency, increase fuel costs, and potentially increase emissions levels. [0003] Secondary airflow may be used within gas turbine engines to cool various heated components. In particular, cooling air extracted from later stages of compressors in gas turbine engines may be used to cool components therein and to purge gaps and cavities between adja...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D11/00
CPCF16J15/0812F01D11/006F05D2240/57F05D2300/6012
Inventor N.N.萨拉维特D.W.韦伯O.萨穆拉拉V.J.摩根
Owner GENERAL ELECTRIC TECH GMBH