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Method for removing seal device

A technology of sealing device and sealing belt, which is used in the direction of engine sealing, mechanical equipment, engine components, etc.

Inactive Publication Date: 2004-10-27
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to replace the sealing tape there are currently known and expensive methods of machine fastening elements or fastening devices

Method used

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  • Method for removing seal device
  • Method for removing seal device
  • Method for removing seal device

Examples

Experimental program
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Embodiment Construction

[0024] perspective figure 1 , shows a part of the gray cast iron casing 2 of the steam turbine. The portion shown is one half of a hollow cylinder in which the rotor (not shown) of the steam turbine rotates. Seen from the direction of the rotor axis, in order to seal the gap between the casing 2 and the rotor, a plurality of sealing strips 3 (all extending into the gap) are sequentially inserted into the casing 2 one by one. To simplify the figure, only three such sealing strips 3 are shown. The sealing bands mounted on the rotor each fit between two adjacent sealing bands 3 of the casing 2 . In this way, the so-called labyrinth seal of the gap between the rotor and the casing 2 is formed.

[0025] Each sealing strip 3 is fastened in a groove 6 of the casing 2 by metal fastening means 4 . The fastening device is a caulking strip of high-alloy steel.

[0026] exist figure 2 In the enlarged figure of , the fastening condition of the sealing tape 3 on the casing 2 can be c...

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PUM

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Abstract

The invention relates to a method for removing a seal (3) that is fixed in a groove (6) of a component. According to said method, a highly pressurised jet of liquid is aimed at the seal (3) or between the seal (3) and the component in order to loosen the seal (3) and free it from the groove. The inventive method is particularly suitable for freeing a sealing strip in a rotor or in a housing (2) of a turbine-type machine, and is considerably less time-consuming and expensive than the twisting-off method that has been used up until now.

Description

technical field [0001] The invention relates to a particularly cost-effective and simple method of dismantling a sealing device mounted in a groove of a module by means of fastening means. Background technique [0002] Such a sealing device may be, for example, a sealing tape fastened to the casing or rotor of the turbine in order to seal the gap (between the rotor shaft and the guide vanes fastened to the casing or between the casing and the rotor). between the rotor blades) to prevent the leakage of the working medium that flows in the turbine and drives the rotor. In such a device, viewed from the axial direction of the rotor, if the relevant sealing strips on the casing or guide vanes and the relevant sealing strips on the rotor shaft or rotor blades of the rotor are installed alternately one by one, this is called For the so-called "labyrinth" seal. The working medium no longer seeps out in large quantities from the labyrinth seal, so that such a loss of working mediu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P6/00B23P19/04B26F3/00F16J15/00F16J15/3268
CPCF16J15/3268B23P19/047B23P6/002Y10T29/53657Y10T29/5383Y10T29/49718Y10T29/49721Y10T29/49815Y10T29/49822Y10T29/49719
Inventor 沃尔弗拉姆·克罗科夫尼古劳斯·基法拉斯
Owner SIEMENS AG