US 10,648,570 B2Granted

Gas seal

AssigneeSiemens Aktiengesellschaft

InventorChristian Kirchner

Life of this patent

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Abstract

A gas seal which extends in a circumferential direction in an axis has a rotating slip ring and an axially movable stationary slip ring. A slip sleeve guides the stationary slip ring in the axial movement direction by a first sliding face on a second sliding face. The slip sleeve is fastened to a stator of the gas seal, wherein the slip sleeve has a first recess extending in the circumferential direction, and the stator has a second recess, opposite the first recess in the region of the fastening, extending in the circumferential direction, such that the first recess and the second recess define a common cavity extending in the circumferential direction. In the cavity there is an elongate fixing element which at least partially fills the first recess and the second recess such that an unlimited axial relative movement is only possible when the fixing element is radially deformed.

Claims13

Dependent claims

A gas seal which extends in a circumferential direction with respect to an axis, comprising:

a rotating slide ring and a stationary slide ring,
wherein the stationary slide ring is axially movable,
wherein the gas seal comprises a slide sleeve,
wherein contact between an outer surface of the slide sleeve and an inner surface of the stationary slide ring radially restrains the stationary slide ring while permitting movement of the stationary slide ring along an axial direction of mobility,
wherein the slide sleeve is fastened to a stator of the gas seal,
wherein the slide sleeve comprises an annular-shaped first recess extending in the circumferential direction, and the stator comprises an annular-shaped second recess extending in the circumferential direction and situated opposite the first recess in a region of the fastening, such that the first recess and the second recess define a common cavity which extends in the circumferential direction in an annular manner,
wherein, in the cavity, there is arranged an elongate fixing element which at least partially fills the first recess and second recess such that an unlimited axial relative movement is possible only when the fixing element is radially deformed.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/330,867Filed 22 Aug 2017
Priority: EP 1618848013 Sep 2016
Published: US 2019/0219173 A118 Jul 2019
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F16J 15/342
With cavities: with means for feeding fluid directly to the face
F16J 15/3464
With slip-ring pressed against a more or less radial face on one member: mounting of the seal
F16J 15/38
With slip-ring pressed against a more or less radial face on one member: sealed by a packing
F16J
Pistons