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Clearance control device

A technology for controlling devices and gaps, which is applied in the cooling of gas turbine devices, jet propulsion devices, turbine/propulsion devices, etc., and can solve problems such as engine performance and efficiency not being optimized

Active Publication Date: 2019-01-04
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this delay time, the performance and efficiency of the engine are not optimized

Method used

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Embodiment Construction

[0039] Reference will now be made in detail to present embodiments of the invention, one or more embodiments of which are illustrated in the accompanying drawings. Numeral and letter designations are used in the detailed description to refer to features in the drawings. The same or similar symbols are used in the drawings and description to refer to the same or similar parts of the present invention. As used in this specification, the terms "first", "second" and "third" are used interchangeably to distinguish one element from another element, and are not intended to indicate the position or importance of individual elements. The terms "upstream" and "downstream" refer to relative flow directions with respect to fluid flow in a fluid path. For example, "upstream" refers to the direction of flow of fluid out, and "downstream" refers to the direction of flow of fluid toward. "HP" means high pressure and "LP" means low pressure.

[0040] Furthermore, as used in this specificati...

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Abstract

The invention provides a clearance control system which includes one or more clearance control devices that include features for controlling the clearances between rotating and stationary components of an engine. In one exemplary aspect, a clearance control device utilizes a fluid to pressurize an actuation chamber defined by a compliant member of the clearance control device. The pressurization of the actuation chamber causes the actuation chamber to expand in a direction that changes the clearance between the stationary and rotating components of the engine.

Description

technical field [0001] The present application relates generally to gas turbine engines, and more particularly, the present application relates to clearance control systems for gas turbine engines and corresponding devices. Background technique [0002] Optimization of blade tip clearances can lead to better engine performance and efficiency. Traditionally, the clearance between the rotating and stationary turbomachinery components of the engine has been adjusted by Active Clearance Control (ACC) systems. For example, some conventional ACC systems deliver thermal control air, such as, for example, fan bypass air, to impinge on the flange so that the radial position of the casing and shroud can be adjusted relative to the tips of the rotating turbine blades. The lower temperature of the thermal control air combined with the coefficient of thermal expansion of the shell material causes the diameter of the shell to be reduced thereby providing a tighter clearance between the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D11/24
CPCF01D11/24F01D11/20Y02T50/60F02C7/042F02C3/04F02C7/057F02C7/28F02C9/18F02C7/18F05D2220/32F05D2240/35F05D2260/52
Inventor G.J.范德默维J.F.柯克
Owner GENERAL ELECTRIC CO