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Air suction labyrinth type seal element

A technology of seals and seal components, applied in the direction of engine seals, engine components, machines/engines, etc., can solve problems such as wear and tear, and achieve the effect of low leakage, high durability and effective sealing

Inactive Publication Date: 2008-01-30
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compressor discharge pressure (CDP) seal assembly 26 and forward outer seal (FOS) 34 wear through the extended operations described above

Method used

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  • Air suction labyrinth type seal element
  • Air suction labyrinth type seal element
  • Air suction labyrinth type seal element

Examples

Experimental program
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Embodiment Construction

[0017] Reference is made to the drawings, wherein like reference numerals represent like elements throughout the different drawings. 2 and 3 illustrate an exemplary seal assembly 42 that seals a leak between a region of higher pressure P (high) and a region of lower pressure P (low). In this particular example, seal assembly 42 replaces the compressor discharge pressure (CDP) seal described above and is disposed between central shaft 24' and diffuser tank 12', however, it will be appreciated that seal assembly 42 The features can be used in any application requiring a surface seal. The basic components of the seal assembly 42 include a rotor 44, a stationary seal bracket 46, and a seal body 48 (sometimes referred to as a "slider"), all disposed about the longitudinal axis of the engine. The rotor 44 is generally disc-shaped and forms a first axially facing primary seal surface 50 .

[0018] The seal carrier 46 is a non-rotating, axially extending member and forms a radially ...

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PUM

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Abstract

The sealing element body (48) includes the following components: an annular axial-extending part (72); a radical extending part (70) which forms a main sealing surface (50) and fits with the axial-extending part (72) and forms an approximately L-shaped section plane; and at least one annular axial-extending sealing tooth (88).

Description

technical field [0001] The present invention relates generally to face seals for rotating machinery, and in particular to suction or gas balance face seals. Background technique [0002] Face seals are used to reduce leakage from the gap between two components from a high pressure area to a low pressure area. Such seals have been used in rotating machinery such as steam turbines and gas turbines. [0003] In gas turbines, face seals are used between stationary equipment rooms, between rotor and stator components, and can be used between different rotating components. Gaps or leak paths between these various components must be sealed, and the seals used need to be able to compensate for variations in gaps due to differential heat generated and elongation of machine components during the machine tool cycle. [0004] Adapting to the seal to be sealed is usually done by maintaining compliant contact between the components (for example, using brush or leaf seals) or by creating...

Claims

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Application Information

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IPC IPC(8): F01D11/02F16J15/447
Inventor W·L·赫伦J·C·阿尔伯斯C·C·格林P·克鲁金顿
Owner GENERAL ELECTRIC CO