Sealing assembly for a fluid kinetic machine, method for producing a sealing assembly as well as fluid kinetic machine

Patent metadata

Field	Value
Publication number	US-10865651-B2
Application number	US-201816183357-A
Country	US
Kind code	B2
Filing date	Nov 7, 2018
Priority date	Nov 9, 2017
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

The invention relates to a sealing assembly for a fluid kinetic machine, in particular for an aircraft engine, for sealing a radial gap between a rotor and a stator, including at least one sealing support for retaining and/or fixing at least one sealing element, wherein the sealing support includes a first and a second radial web extending in a radial extension direction as well as an axial web extending in an axial extension direction, firmly bonded to the radial webs, and the radial webs form a receptacle for receiving an element of the stator. Therein, the radial webs are formed as sheet elements formed elongated in radial direction, wherein a radially interior end of the radial webs is respectively firmly bonded, in particular welded, to a radially exterior surface of the axial web.

First claim

We claim:

1. A sealing assembly for an aircraft engine, for sealing a radial gap between a rotor and a stator, including at least one sealing support for retaining and/or fixing at least one sealing element, wherein each sealing support includes a first and a second radial web extending in a radial extension direction as well as an axial web extending in an axial extension direction, firmly bonded to the radial webs, and the radial webs form a receptacle for receiving an element of the stator, wherein the radial webs are formed as flat sheet elements formed elongated in the radial direction, wherein a radially interior, non-bent end of the radial webs is respectively firmly bonded to a radially exterior surface of the axial web edge to edge.

2. The sealing assembly according to claim 1 , wherein the radial webs are welded to the radially exterior surface of the axial web.

3. The sealing assembly according to claim 2 , wherein the welding is effected by a laser.

4. The sealing assembly according to claim 2 , wherein the welding is performed in a direction, which is inclined to the radial and axial direction of a fluid kinetic machine and the sealing support, respectively, at an angle between 30° and 60°, preferably 115°.

5. The sealing assembly according to claim 1 , wherein the axial web is formed as a sheet element.

6. The sealing assembly according to claim 1 , wherein the sealing support is T-shaped such that the axial web extends beyond a connection area between the radial webs and the axial web on both sides in the axial direction.

7. The sealing assembly according to claim 1 , wherein an axially extending outer flange is formed at a radially outer end of at least one of the radially extending radial webs.

8. The sealing assembly according to claim 1 , wherein the sealing assembly includes a front ring or a front ring segment and/or a rear ring and/or a rear ring segment viewed in a flow direction, wherein the front ring or the front ring segment is connected to the first radial web and/or the rear ring or the rear ring segment is connected to the second radial web in a force-fit and/or firmly bonded manner.

9. The sealing assembly according to claim 8 , wherein the front ring or the front ring segment and/or the rear ring or the rear ring segment are formed as sheet elements.

10. The sealing assembly according to claim 1 , wherein the element of the stator is a blade foot or a blade foot segment of a guide blade ring, a guide blade ring segment or a guide blade of a fluid kinetic machine.

11. The sealing assembly according to claim 1 , wherein at least one slide stone is arranged between the radial webs and connected to them by at least one axial bolt.

12. The sealing assembly according to claim 1 , wherein the sealing element is formed as a honeycomb or brush seal.

13. The sealing assembly according to claim 1 , wherein the sealing assembly is a static inner air seal ring or a ring segment thereof.

14. The sealing assembly according to claim 1 , wherein the axial web is formed as a sheet element.

15. The sealing assembly according to claim 1 , wherein at least one sealing assembly is configured and arranged in a fluid kinetic machine.

Assignees

• MTU Aero Engines AG
• Almecon Tech Gmbh

Inventors

• Schlemmer Markus
• Pirker Klaus
• Kropp Ralph
• Vinke Lorenz
• Wiebe Waldemar

Classifications

• F01D11/001 Primary

  for sealing space between stator blade and rotor · CPC title

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• F05D2230/54

  by sheet metal manufacturing · CPC title

• F01D11/003

  by packing rings; Mechanical seals · CPC title

• F05D2240/56

  Brush seals · CPC title