Interface member for reconditioning a control ring of an engine compressor, and associated reconditioning method

Patent metadata

Field	Value
Publication number	US-11199199-B2
Application number	US-201716326866-A
Country	US
Kind code	B2
Filing date	Aug 22, 2017
Priority date	Aug 23, 2016
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

An interface member equips a control ring of a high-pressure compressor of an engine. This control ring has at least one housing intended to partially house a guide shoe. This interface member includes a central wall to which two holding tabs are secured, delimiting a through-housing having dimensions substantially identical to the initial dimensions of the housing, and suitable for being inserted into the housing, after it has been machined to receive same following a deformation, until the holding tabs keep it stationary relative to the control ring.

First claim

The invention claimed is:

1. A method for reconditioning a control ring of a high pressure compressor of an engine, said control ring having at least one housing extending along a direction of a thickness of the control ring for partially housing a guide shoe and said housing having undergone a deformation, the method comprising:
machining said housing, that has undergone deformation, such that the housing has dimensions adapted to house an interface part comprising a lateral wall with integral holding tongues and a through housing, wherein the through housing has dimensions identical to initial dimensions of said housing before said deformation; and
then introducing said interface part into said machined housing until the integral holding tongues make the interface part stationary relative to said control ring, wherein the integral holding tongues are dimensioned such that each integral holding tongue extends from an end section of the lateral wall and bear against an outer side face and along only a portion of the thickness of the control ring when the interface part is introduced into the machined housing, and wherein each integral holding tongue is flexible.

2. The method according to claim 1 , wherein said interface part is introduced into said machined housing by press-in force inducing deformation via a deformation slit, and wherein the interface part comprises the deformation slit.

3. The method according to claim 1 , wherein the integral holding tongues are provided at a bottom portion of the lateral wall and extend away from the lateral wall such that the integral holding tongues extend outside the housing when the lateral wall is introduced into the machined housing.

4. The method according to claim 3 , wherein each of the integral holding tongues extends perpendicularly to a longitudinal axis of the interface part.

5. The method according to claim 3 , wherein each of the integral holding tongues are provided in contact with an external surface of the control ring when the lateral wall is introduced into the machined housing.

6. An interface part for a control ring of a high pressure compressor of an engine, said control ring having at least one housing extending along a direction of a thickness of the control ring for partially housing a guide shoe, the interface part comprising:
a lateral wall with integral holding tongues delimiting, longitudinally, a through housing having dimensions identical to initial dimensions of said at least one housing that has undergone a deformation, and said lateral wall introduced in said at least one housing, after said at least one housing is machined to accommodate the through housing subsequent to the deformation of said at least one housing, until said integral holding tongues make the interface part stationary relative to said control ring,
wherein the integral holding tongues are dimensioned such that each integral holding tongue extends from an end section of the lateral wall and bear against an outer side face and along only a portion of the thickness of the control ring when the interface part is introduced into the machined housing, and wherein each integral holding tongue is flexible.

7. The interface part according to claim 6 , wherein said lateral wall comprises a deformation slit enabling the interface part to be deformed during the introduction of said interface part in said machined housing.

8. The interface part according to claim 7 , wherein said deformation slit is elastic.

9. The interface part according to claim 6 , wherein each holding tongue is generally of an L shape so as to bear closely and partially against the outer side face of an edge of said control ring.

10. The interface part according to claim 6 , wherein each holding tongue is generally of a U shape so as to surround a part of an edge of said control ring and to bear partially against a front face of said edge.

11. The interface part according to claim 10 , wherein each holding tongue comprises an end having at least one curvature so as to bear against a central part of said control ring, located forwardly of said edge.

12. The interface part according to claim 6 , wherein the integral holding tongues are provided at a bottom portion of the lateral wall and extend away from the lateral wall such that the integral holding tongues extend outside the housing when the lateral wall is introduced into the machined housing.

13. The interface part according to claim 12 , wherein each of the integral holding tongues extends perpendicularly to a longitudinal axis of the interface part.

14. The interface part according to claim 12 , wherein each of the integral holding tongues is provided in contact with an external surface of the control ring when the lateral wall is introduced into the machined housing.

15. A control ring of a high pressure compressor of an engine, the control ring comprising:
a housing for partially housing a guide shoe, said housing extending along a direction of a thickness of the control ring, and
an interface part comprising a lateral wall with integral holding tongues, said interface part delimiting, longitudinally, a through housing having dimensions identical to initial dimensions of said housing that has undergone a deformation, said interface part being partially introduced in said housing, after said housing is machined to accommodate the through housing subsequent to the deformation of said housing, until said holding tongues make the interface part stationary relative to said control ring,
wherein the integral holding tongues are dimensioned such that each integral holding tongue extends from an end section of the lateral wall and bear against an outer side face and along only a portion of the thickness of the control ring when the interface part is introduced into the machined housing, and wherein each integral holding tongue is flexible.

Assignees

• Safran Aircraft Engines

Inventors

• Bazot Olivier
• Edynak Jérémy Philippe Pierre

Classifications

• F01D17/16

  by means of nozzle vanes · CPC title

• F04D29/563 Primary

  specially adapted for elastic fluid pumps · CPC title

• F05D2230/80

  Repairing, retrofitting or upgrading methods · CPC title

• F01D17/162

  for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line (F01D17/167 takes precedence) · CPC title

• F04D29/644

  especially adapted for elastic fluid pumps · CPC title