Method and apparatus for servicing combustion liners

Patent metadata

Field	Value
Publication number	US-10414005-B2
Application number	US-201415302239-A
Country	US
Kind code	B2
Filing date	Apr 9, 2014
Priority date	Apr 9, 2014
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

An apparatus and method for servicing a combustion liner in a combustion case of a turbine is provided. The apparatus includes an elongated bar having a handle at one end and a force applying member at an opposing end of the elongated bar. An attachment member is configured for attachment to a flange of the combustion case. The attachment member is also configured for pivotal attachment to the elongated bar. The apparatus is configured to apply a radially outward force on a downstream portion of the combustion liner when a radially inward force is applied to the handle.

First claim

The invention claimed is:

1. An apparatus for servicing a combustion liner in a combustion case of a turbine, the apparatus comprising:
an elongated bar having a handle at one end and a force applying member at an opposing end of the elongated bar;
an attachment member configured for attachment to a flange of the combustion case, the attachment member also configured for pivotal attachment to the elongated bar, the attachment member comprising a hook that is configured for attachment to the flange by mechanical fasteners, wherein the hook projects axially upstream from the flange;
a bracket configured to support and allow slidable motion of the elongated bar therethrough, the bracket including a pin configured to hang on the hook, wherein both the hook and pin are configured to allow the elongated bar to pivot along two substantially orthogonal axes; and
wherein the apparatus is configured to apply a radially outward force on a downstream portion of the combustion liner when a radially inward force is applied to the handle.

2. The apparatus of claim 1 , the elongated bar further comprising:
a bracket assembly located near a middle portion of the elongated bar, the bracket assembly configured for pivotal attachment to the attachment member.

3. The apparatus of claim 1 , the force applying member further comprising:
a wheel or ball comprised of a material configured to resist damaging the combustion liner.

4. The apparatus of claim 3 , wherein the wheel or ball are comprised of or coated with: acetal resin, plastic, polypropylene, polytetrafluoroethylene, or rubber.

5. The apparatus of claim 1 , the attachment member further comprising:
a liner guide having a slot configured for guiding a liner stop on the combustion liner.

6. The apparatus of claim 1 , the attachment member further comprising:
a clamp configured for clamping onto the flange.

7. The apparatus of claim 1 , wherein an opening of the hook is sized to be larger than a diameter of the pin.

8. The apparatus of claim 7 , wherein the opening of the hook is sized to be at least about 50% to about 100% larger than the diameter of the pin.

9. The apparatus of claim 7 , the force applying member further comprising:
a wheel or ball comprised of a material configured to resist damaging the combustion liner.

10. The apparatus of claim 9 , wherein the wheel or ball are comprised of or coated with: acetal resin, plastic, polypropylene, polytetrafluoroethylene, or rubber.

11. A method of servicing a combustion liner in a combustion case of a turbine, the method comprising:
providing an elongated bar having a handle at one end and a force applying member at an opposing end of the elongated bar;
attaching an attachment member to a flange of the combustion case, the attachment member configured for pivotal attachment to the elongated bar, the attachment member comprising a hook configured for attachment to the flange by mechanical fasteners, wherein the hook projects axially upstream from the flange, and a bracket configured to support and allow slidable motion of the elongated bar therethrough, the bracket including a pin configured to hang on the hook, and both the hook and pin are configured to allow the elongated bar to pivot along two substantially orthogonal axes; and
applying force to the handle of the elongated bar to apply a related force to the combustion liner, wherein a radially inward force applied to the handle causes a radially outward force on a downstream portion of the combustion liner.

12. The method of claim 11 , the attaching step further comprising:
clamping the attachment member onto the flange.

13. The method of claim 11 , the attaching step further comprising:
using mechanical fasteners that are screwed into the flange to secure the attachment member to the flange.

14. The method of claim 11 , wherein the elongated bar further comprises:
a bracket assembly located near a middle portion of the elongated bar, the bracket assembly configured for pivotal attachment to the attachment member.

15. The method of claim 14 , wherein the attachment member further comprises:
a liner guide having a slot configured for guiding a liner stop on the combustion liner.

16. The method of claim 11 , wherein the force applying member further comprises:
a wheel or ball comprised of a material configured to resist damaging the combustion liner; and
wherein the material is comprised of acetal resin, plastic, polypropylene, polytetrafluoroethylene or rubber.

Assignees

• Gen Electric
• Klejc Adrian Adam
• Hanson Stuart Craig
• Herbold John William
• Holmes James Bradford
• Kolvick Sandra Beverly
• Mogle Ii Thomas Alan
• Huth Robert Edward
• Sajdak Lukasz

Inventors

• Klejc Adrian Adam
• Hanson Stuart Craig
• Herbold John William
• Holmes James Bradford
• Kolvick Sandra Beverly
• Mogle Ii Thomas Alan
• Huth Robert Edward
• Sajdak Lukasz

Classifications

• F23R2900/00019

  Repairing or maintaining combustion chamber liners or subparts · CPC title

• F23R2900/00017

  Assembling combustion chamber liners or subparts · CPC title

• B23P6/005 Primary

  using only replacement pieces of a particular form · CPC title

• Y10T29/49732

  by attaching repair preform, e.g., remaking, restoring, or patching · CPC title

• Y10T29/4973

  Replacing of defective part · CPC title