Arrangement for sealing structural members using a V-shaped insert, particularly in the case of turbo-engines

• US 5,338,152 A
• Filed: 05/06/1993
• Issued: 08/16/1994
• Est. Priority Date: 05/11/1992
• Status: Expired due to Fees

• Current Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbH
• Original Assignee: MTU Motoren- und Turbinen-Union Muenchen GmbH
• Inventors: Feldmann, Manfred
• Primary Examiner(s): Look, Edward K.
• Assistant Examiner(s): Lee, Michael S.
• Application Number:
  US08/057,773
• Time in Patent Office: 467 Days
• Field of Search: 415/134, 415/136, 415/137, 415/138, 415/139, 415/209.1, 415/209.2, 415/209.3, 415/209.4, 415/191, 277/27, 277/198, 277/199, 277/205
• US Class Current: 415/139
• CPC Class Codes: F01D 11/005 Sealing means between non relatively rotating elements
• CPC Class Codes: F16J 15/441 with floating ring

Abstract

An arrangement for sealing structural members particularly in the case of turbo-engines is provided. A structural member is to be divided along a first plane into segments, which can be moved relative to one another, and is to be movable in a second plane which is angularly offset with respect to the first plane. Projections of the segments sealingly engage in a groove of an additional structural member. Expansion gaps, which are arranged between abutting edges of the segments, are to be sealed off longitudinally and transversely with respect to the course of the gap by sealing plates. In this case, each expansion gap is to be sealed off between a sealing plate arranged transversely to the course of the gap and an opposing surface of the groove acting as a sealing surface by means of a V-shaped insert. The V-shaped insert is actuated by a local pressure difference; is arranged using free legs which spread open in the direction of the groove base; and is expanded in the direction of the opposite sealing surface of the groove.

Claims

1. An arrangement for sealing structural members between flow channels being supplied by fluids of different pressures, comprising:

a first structural member divided along a first plane into segments that are movable relative to one another, the first structural member being movable in a second plane that is angularly offset with respect to the first plane;

a second structural member having a groove, wherein projections of the segments sealingly engage in the groove;

expansion gaps arranged between abutting edges of the segments;

sealing plates sealing-off the expansion gaps longitudinally and transversely with respect to a course of the gaps;

a V-shaped insert, each for sealing-off one of the expansion gaps between one plate arranged transversely with respect to the course of the gap and an opposite transverse surface of the groove acting as a sealing surface for one end face of said insert;

the V-shaped insert having two legs following said V-shape and projecting freely towards a base of said groove,

wherein the insert is uniformly expanded via the two legs towards the opposingly facing sealing surface of the groove;

wherein the insert is disposed via the expansion of the V-shaped legs in a sealing manner on corresponding oblique abutting surfaces of two segments at one expansion gap;

wherein the V-shaped insert covers the expansion gap with a base wall between the two legs sloping in the direction of its sealing end face on the opposite transverse surface of the groove;

wherein the V-shaped insert is actuated by a partial pressure of said fluids, the fluid pressure acting before the insert in the groove is greater than the fluid pressure acting behind the insert at the expansion gap.

2. An arrangement according to claim 1, wherein the groove is arranged on a housing-type sealing support of the second structural member.

3. An arrangement according to claim 2, wherein the first plane is an annular plane, the segments of the first structural member in this annular plane being shroud segments of a guiding baffle of a turbine which is segmented along the circumference, the second structural member being a housing wall section of the turbine with the groove which extends on it along the circumference.

4. An arrangement according to claim 2, wherein the first structural member and the second structural member are wall elements of one of a propelling nozzle and an air inlet of a turbo-engine.

5. An arrangement according to claim 4, wherein the turbo-engine is a turboramjet engine.

6. An arrangement according to claim 1, wherein the first plane is an annular plane, the segments of the first structural member in this annular plane being shroud segments of a guiding baffle of a turbine which is segmented along the circumference, the second structural member being a housing wall section of the turbine with the groove which extends on it along the circumference.

7. An arrangement according to claim 1, wherein the first structural member and the second structural member are wall elements of one of a propelling nozzle and an air inlet of a turbo-engine.

8. An arrangement according to claim 7, wherein the turbo-engine is a turboramjet engine.

9. An arrangement according to claim 1, wherein the arrangement for sealing structural members is used in a turbo-engine.

10. An arrangement according to claim 1, wherein the corresponding oblique abutting surfaces on which the insert is disposed via the expansion of the V-shaped legs are formed by a correspondingly preprofiled recess for the insert between adjacent abutting edges of two segments.