Conduit with damping fingers

Patent metadata

Field	Value
Publication number	US-10557572-B2
Application number	US-201715721350-A
Country	US
Kind code	B2
Filing date	Sep 29, 2017
Priority date	Sep 29, 2017
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

An apparatus that includes a conduit having a first end, a second end, and a longitudinal axis. The conduit may define an inner channel and may be configured to extend through a vane cavity of a vane. The apparatus may further include a damping finger that includes a first portion coupled to the conduit and a second portion diverging outward at an angled orientation from the conduit. The damping finger may be resiliently flexible and the second portion of the damping finger may be configured to contact an inner surface of the vane.

First claim

What is claimed is:

1. An apparatus comprising:
a conduit comprising a first end, a second end, and a longitudinal axis, wherein the conduit defines an inner channel and is configured to extend through a vane cavity of a vane; and
a damping finger comprising a first portion coupled to the conduit, and a second portion diverging outward from the first portion at an angle relative to the longitudinal axis of the conduit, wherein the damping finger is resiliently flexible and the second portion of the damping finger is configured to contact an inner surface of the vane; wherein: the first portion comprises an attachment surface in contact with the conduit; the first portion comprises a first surface, opposite the attachment surface, that faces away from the longitudinal axis of the conduit; a second surface of the second portion faces away from the longitudinal axis of the conduit; and the first surface is continuous with the second surface.

2. The apparatus of claim 1 , wherein an engagement surface of the second portion of the damping finger comprises a contact element.

3. The apparatus of claim 2 , wherein the damping finger comprises a nickel-based super alloy.

4. The apparatus of claim 2 , wherein the contact element is detachably coupled to the second portion of the damping finger.

5. The apparatus of claim 1 , wherein the second portion of the damping finger is disposed medially along the longitudinal axis of the conduit between the first end and the second end.

6. The apparatus of claim 1 , wherein the damping finger is a first damping finger and the apparatus further comprises a second damping finger, wherein the second damping finger is coupled to the conduit opposite the first damping finger.

7. The apparatus of claim 6 , wherein the first damping finger and the second damping finger comprise one damping finger pair of a plurality of damping finger pairs distributed medially along the longitudinal axis between the first end and the second end.

8. The apparatus of claim 1 , wherein the first portion of the damping finger is brazed to the conduit.

9. A gas turbine engine comprising:
a vane extending between a radially inward structure and a radially outward structure, the vane defining a vane cavity;
a conduit extending through the vane cavity and defining an inner channel configured to convey at least one of fluid and wiring between the radially inward structure and the radially outward structure; and
a damping finger comprising a first portion coupled to the conduit and a second portion diverging outward from the first portion at an angle relative to a longitudinal axis of the conduit, wherein the damping finger is resiliently flexible and a tip of the second portion of the damping finger contacts an inner surface of the vane;
wherein:
the first portion comprises an attachment surface in contact with the conduit;
the first portion comprises a first surface, opposite the attachment surface, that faces away from the longitudinal axis of the conduit;
a second surface of the second portion faces away from the longitudinal axis of the conduit; and
the first surface is continuous with the second surface.

10. The gas turbine engine of claim 9 , wherein the vane comprises a leading edge, a trailing edge, and two opposing sides extending between the leading edge and the trailing edge, wherein the inner surface is of one of the two opposing sides.

11. The gas turbine engine of claim 10 , wherein the damping finger is a first damping finger and the gas turbine engine further comprises a second damping finger, wherein the second damping finger is coupled to the conduit opposite the first damping finger such that the second damping finger contacts the inner surface of the other of the two opposing sides.

12. The gas turbine engine of claim 10 , wherein the tip of the second portion of the damping finger comprises a contact element.

13. The gas turbine engine of claim 12 , wherein the contact element is detachably coupled to the second portion of the damping finger.

14. The gas turbine engine of claim 9 , wherein the first portion is radially outward of the second portion.

15. The gas turbine engine of claim 9 , wherein the first portion of the damping finger consists of a segment of the damping finger that is directly in contact with the conduit.

16. The gas turbine engine of claim 9 , wherein the second portion of the damping finger is disposed medially between the radially inward structure and the radially outward structure.

17. The gas turbine engine of claim 9 , wherein the first portion of the damping finger is brazed to the conduit.

18. A method of assembling a gas turbine engine, the method comprising:
depressing a second portion of a damping finger towards a conduit, wherein a first portion of the damping finger is coupled to the conduit and the second portion diverges outward from the first portion at an angle relative to a longitudinal axis of the conduit in an undepressed state; and
inserting the conduit through an aperture defined in a radially outward structure of the gas turbine engine, wherein the aperture opens to a vane cavity of a vane that extends between the radially outward structure and a radially inward structures;
wherein:
the first portion comprises an attachment surface in contact with the conduit;
the first portion comprises a first surface, opposite the attachment surface, that faces away from the longitudinal axis of the conduit;
a second surface of the second portion faces away from the longitudinal axis of the conduit; and
the first surface is continuous with the second surface.

19. The method of claim 18 , wherein a cross-sectional diameter of the aperture is greater than a first cumulative cross-sectional diameter of the conduit and the first portion of the damping finger and less than a second cumulative cross-sectional diameter of the conduit and the second portion of the damping finger in an undepressed state.

Assignees

• United Technologies Corp

Inventors

• Banhos Jonas S
• Berube Jesse Ian
• Oldach William
• Lopez Jesus S
• Kumar Ravi Mandya
• Hjelm Scott David
• Kesler Nicholas Andrew

Classifications

• F16L7/00

  Supporting pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic (sleeves for supporting pipes, cables or protective tubing, between relatively movable points F16L3/01) · CPC title

• F05D2230/237

  Brazing · CPC title

• F01D9/02

  Nozzles; Nozzle boxes; Stator blades; Guide conduits {, e.g. individual nozzles (nozzle boxes F01D9/047)} · CPC title

• F01D25/04 Primary

  Antivibration arrangements · CPC title

• F05D2230/60

  Assembly methods · CPC title