DE202014010775U1 - Carbon floating ring gasket for rotating waves - Google Patents

Abstract

A gasket (1) comprising at least two chamber rings (3, 4) between which a radial sealing ring (5) is received, said chamber rings (3, 4) being axially adjacent, said chamber rings (3, 4) having a chamber (6 ), in which the radial sealing ring (5) is received, and wherein the radial sealing ring (5) at its in the installed state of a shaft (2) end facing an axial extension (7) which projects in the axial direction of the radial seal (5) and on one of the chamber rings (4) sealingly or sealingly slides, characterized in that the axial extension (7) has an inner diameter which is greater than the inner diameter of the chamber ring (4) against which it sealingly or sealingly slides.

Description

Technical area

The invention relates to a seal according to the preamble of claim 1.

State of the art

A seal of this kind is already out of the DE 43 05 117 A1 known. There, a seal is shown, which comprises at least two chamber rings, between which a radial sealing ring is received.

The chamber rings are arranged axially adjacent, wherein the chamber rings form a chamber in which the radial sealing ring is received. The radial sealing ring has at its in the installed state of a shaft end facing an axial extension which protrudes in the axial direction of the radial seal and sealingly abuts one of the chamber rings or sealingly slides.

With this construction it is possible, when using certain materials, that the extension grinds into the chamber ring due to wear. This results in a fixation of the radial sealing ring in the radial direction.

The radial seal can no longer avoid in the radial direction, since it is virtually run into a groove and guided in this. There is a risk that the radial seal will be destroyed.

Presentation of the invention

The invention is therefore based on the object, a seal of the type mentioned in such a way and further to form that the radial seal is sufficiently movable even after prolonged operation in the radial direction.

The present invention achieves the aforementioned object by the features of claim 1.

According to the invention it has been recognized that the axial extension must have an inner diameter which is greater than the inner diameter of the chamber ring, on which it bears sealingly or slides sealingly.

The inner diameter of the axial sealing surface of the radial seal is increased by adding a paragraph so far that it is always taking into account a radial path of the shaft is greater than the inner diameter of the chamber ring on which the radial seal sealingly seals or slides.

As a result, an axial shrinkage or grinding of the radial seal in the chamber ring, resulting in a radial fixation of the radial seal, effectively avoided.

In that regard, a seal of the type mentioned is configured and further developed such that the radial sealing ring is sufficiently movable even after prolonged operation in the radial direction.

Consequently, the object mentioned above is achieved.

The radial sealing ring could be formed as an integrally formed sliding ring, protrudes from an axial extension to sealingly abut against a chamber ring or to slide sealingly. As a result, the radial seal of the generic document DE 43 05 117 A1 so far changed that from the DE 43 05 117 A1 known sliding ring (reference numeral 20 from 2 of the DE 43 05 117 A1 ) sealingly bears directly on a chamber ring or slides sealingly. As a result, a greater compactness of the seal is achieved.

The radial seal could be made of a carbon material. A carbon material wears less the chamber ring than titanium or other metals.

The seal described here can be used for high-pressure sealing, in particular for compressors. Use in compressors or in the carbon dioxide reinjection is also conceivable.

Brief description of the drawing

In the drawing shows the only one

Fig. A seal, namely a carbon floating ring seal for a rotating shaft.

Embodiment of the invention

The only FIGURE shows a seal 1 for a rotating shaft 2 comprising at least two chamber rings 3 . 4 between which a radial seal 5 is included, with the chamber rings 3 . 4 are arranged axially adjacent, wherein the chamber rings 3 . 4 a chamber 6 form, in which the radial seal 5 is received, and wherein the radial seal 5 at its in the installed state of the shaft 2 facing the end an axial extension 7 having, in the axial direction of the radial seal 5 protrudes and on one of the chamber rings 4 sealingly or sealingly slides.

The axial extension 7 has an inner diameter which is larger than the inner diameter of the chamber ring 4 where it fits tightly or slides sealingly. This is done by a paragraph 8th achieved, the radially below, namely radially inside, of the extension 7 is trained.

The radial seal 5 is formed as an integrally formed sliding ring, of which the axial extension 7 protrudes to the chamber ring 4 sealingly to rest or to slide sealingly. The radial seal 5 is made of a carbon material.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4305117 A1 [0002, 0013, 0013, 0013]

Claims (3)

Poetry ( 1 ) comprising at least two chamber rings ( 3 . 4 ), between which a radial sealing ring ( 5 ), the chamber rings ( 3 . 4 ) are arranged axially adjacent, wherein the chamber rings ( 3 . 4 ) a chamber ( 6 ) in which the radial sealing ring ( 5 ), and wherein the radial seal ( 5 ) at its in the installed state of a shaft ( 2 ) end facing an axial extension ( 7 ), which in the axial direction of the radial seal ( 5 ) and on one of the chamber rings ( 4 ) sealingly or sealingly slides, characterized in that the axial extension ( 7 ) has an inner diameter that is larger than the inner diameter of the chamber ring ( 4 ), on which it rests sealingly or slides sealingly. Seal according to claim 1, characterized in that the radial sealing ring ( 5 ) is formed as an integrally formed sliding ring, of which the axial extension ( 7 ) protrudes to the chamber ring ( 4 ) to seal or slide sealingly. Seal according to claim 1 or 2, characterized in that the radial sealing ring ( 5 ) is made of a carbon material.

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