Removal device

Patent metadata

Field	Value
Publication number	US-9677428-B2
Application number	US-201414206461-A
Country	US
Kind code	B2
Filing date	Mar 12, 2014
Priority date	Mar 12, 2014
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

A tool for removing a component from a turbomachine is provided. The tool includes a body having an alignment portion and a connection portion. The alignment portion defines a longitudinal axis and a cross sectional shape complementary to a slot defined in a rotor wheel of the turbomachine. When the tool is positioned in the slot, the connection portion is configured to contact the component. The tool additionally includes a force section connected to the body and configured to transfer a force to the connection portion in a direction substantially parallel to the longitudinal axis of the alignment portion.

First claim

What is claimed is:

1. A tool for removing a component of a turbomachine, comprising:
a body, the body comprising
a connection portion configured to contact the component; and
an alignment portion defining a longitudinal axis and a cross-sectional shape, the cross-sectional shape being a dovetail shape complementary to a slot defined in a rotor wheel of the turbomachine; and

a force section connected to the body and configured to transfer a force to the connection portion of the body in a direction substantially parallel to the longitudinal axis of the alignment portion.

2. The tool as in claim 1 , wherein the alignment portion of the body is configured to slidably couple the body of the tool to the slot defined in the rotor wheel.

3. The tool as in claim 1 , wherein the component is a near flow path seal and the slot defined in the rotor wheel is a dovetail slot configured to receive a rotor blade.

4. The tool as in claim 1 , wherein the connection portion comprises a clamp removably attached to the component of the turbomachine.

5. The tool as in claim 4 , wherein the clamp defines an upper clamping surface and a lower clamping surface, each defined at an angle greater than zero relative to the longitudinal axis of the alignment portion, and wherein when the clamp is in a closed position, the upper clamping surface is substantially flush with an outer surface of the component and the lower clamping surface is substantially flush with an inner surface of the component.

6. The tool as in claim 1 , wherein the force section is configured to transfer a pulling force to the body of the tool in a direction away from the component.

7. The tool as in claim 1 , wherein the force section comprises a slide hammer attached to a rear end of the alignment portion of the body.

8. The tool as in claim 7 , wherein the slide hammer comprises:
a rod attached to the rear end of the alignment portion of the body and defining a diameter and a longitudinal axis substantially parallel to the longitudinal axis of the alignment portion, the rod defining a cross-sectional shape distinct from the cross-sectional shape of the alignment portion of the body;
a handle defining a through hole, wherein the rod extends through the through hole of the handle; and
a stopper positioned at a distal end of the rod, the stopper defining a diameter that is greater than the diameter of the rod.

9. A method for removing a component of a turbomachine, comprising: positioning a tool into a slot defined in a rotor wheel of the turbomachine such that a
connection portion of the tool contacts the component, the tool defining a longitudinal axis;
applying a force to a force section of the tool, the force being transferred from the force section to the connection portion in a direction substantially parallel to the longitudinal axis of the tool;
applying the force to the component of the turbomachine using the tool.

10. The method as in claim 9 , further comprising:
attaching the tool to the component using the connection portion of the tool.

11. The method as in claim 10 , wherein the connection portion of the tool comprises a clamp.

12. The method as in claim 11 , wherein the clamp defines an upper clamping surface and a lower clamping surface, each defined at an angle relative to the longitudinal axis of the alignment portion, and wherein when the clamp is in a closed position, the upper clamping surface is substantially flush with an outer surface of the component and the lower clamping surface is substantially flush with an inner surface of the component.

13. The method as in claim 9 , wherein the component is a near flow path seal and the slot defined in the rotor wheel is a dovetail slot configured to receive a rotor blade.

14. The method as in claim 9 , wherein positioning the tool into the slot defined in the rotor wheel comprises sliding the tool into the slot defined in the rotor wheel such that the tool is slidably coupled to the rotor wheel.

15. The method as in claim 9 , wherein the force section comprises a slide hammer attached to a rear end of the tool.

16. The method as in claim 15 , further comprising:
sliding a handle of the slide hammer away from a body portion of the tool until the handle hits a stopper, such that the slide hammer exerts a pulling force on the tool in a direction away from the component.

17. An assembly for removing a component in a turbomachine, comprising:
a first rotor wheel, the component being slidably coupled to the first rotor wheel;
a second rotor wheel positioned adjacent to the first rotor wheel, the second rotor wheel defining a slot; and
a removal tool comprising
a body, the body comprising
a connection portion in contact with the component; and
an alignment portion positioned in the slot defined in the second rotor wheel, the alignment portion defining a longitudinal axis and a cross-sectional shape, the cross-sectional shape being complementary to the slot defined in the second rotor wheel; and

a force section connected to the body and configured to transfer a force to the connection portion of the body in a direction substantially parallel to the longitudinal axis of the alignment portion.

18. The assembly as in claim 17 , wherein the alignment portion of the body is slidably coupled to the slot defined in the rotor wheel.

19. The assembly as in claim 17 , wherein the connection portion comprises a clamp and the component comprises a near flow path seal, and wherein the clamp attaches the removal tool to the near flow path seal.

20. The assembly as in claim 19 , wherein the clamp defines an upper clamping surface and a lower clamping surface, each defined at an angle relative to the longitudinal axis of the alignment portion, and wherein when the clamp is in a closed position the upper clamping surface is substantially flush with an outer surface of the near flow path seal and the lower clamping surface is substantially flush with an inner surface of the near flow path seal.

Assignees

• Gen Electric

Inventors

• Holmes James Bradford
• Spracher David Randolph
• Hollis James Robert
• Sullivan Wayne David

Classifications

• F01D25/285 Primary

  Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures · CPC title

• F05D2230/70

  Disassembly methods · CPC title

• Y10T29/53796

  Puller or pusher means, contained force multiplying operator · CPC title

• B25B27/026

  fluid driven · CPC title

• B25B5/108

  the screw contacting one of the ends of the lever · CPC title