Gas turbine rotor and exhaust maintenance skid

Patent metadata

Field	Value
Publication number	US-9388709-B2
Application number	US-201414460681-A
Country	US
Kind code	B2
Filing date	Aug 15, 2014
Priority date	Aug 15, 2014
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

A system and method for maintenance and inspection of a rotor and exhaust assembly that includes a maintenance skid. The maintenance skid includes an exhaust portion that holds an exhaust and a rotor portion that holds a rotor. A pair of movable stands are part of the exhaust portion, where the movable stands move along tracks. At least two stands are part of the rotor portion, where the stands include rollers that allow the rotor to be turned.

First claim

What is claimed is:

1. A gas turbine rotor and exhaust assembly maintenance system, said system comprising:
a maintenance skid configured to support the gas turbine rotor and exhaust assembly after it has been removed from a gas turbine, said maintenance skid including an exhaust portion configured to support an exhaust of the gas turbine rotor and exhaust assembly and a rotor portion configured to support a rotor of the gas turbine rotor and exhaust assembly, said exhaust portion including opposing tracks and said rotor portion including a rotor portion platform;
a pair of exhaust stands where each exhaust stand is slidably mounted to one of the tracks so as to allow the exhaust to be slidably removed from the rotor and reassembled thereto; and
at least two rotor stands secured to the rotor portion platform and being configured to support the rotor, said rotor stands including rollers that are configured to allow the rotor that is seated on the rotor portion to be turned.

2. The system according to claim 1 wherein the rollers are power rollers.

3. The system according to claim 1 wherein a portion of the rollers are power rollers.

4. The system according to claim 1 wherein the exhaust stands are powered to move back and forth along the tracks.

5. The system according to claim 1 further comprising a maintenance platform that is configured to allow a person to stand on the maintenance platform and inspect or work on a bearing, seal, or a combination thereof, of the exhaust assembly.

6. The system according to claim 1 wherein the rollers are configured to be removable from the rotor stands so as to be replaceable with other rollers having other sizes.

7. The system according to claim 1 wherein the exhaust stands are configured to be replaceable with other exhaust stands having other sizes.

8. A method for providing maintenance and inspection of a rotor and exhaust assembly of a gas turbine, said method comprising:
providing a maintenance skid configured to support the rotor and exhaust assembly after it has been removed from the gas turbine, said maintenance skid including an exhaust portion configured to support an exhaust of the rotor and exhaust assembly and a rotor portion configured to support a rotor of the rotor and exhaust assembly, said exhaust portion including opposing tracks and said rotor portion including a rotor portion platform;
providing a pair of exhaust stands where each exhaust stand is slidably mounted to one of the tracks so as to allow the exhaust to be slidably removed from the rotor and reassembled thereto; and
providing at least two rotor stands secured to the rotor portion platform and being configured to support the rotor, said rotor stands including rollers that are configured to allow the rotor that is seated on the rotor portion to be turned to allow blades that are part of the rotor to be removed and replaced.

9. The method according to claim 8 wherein at least a portion of the rollers are power rollers.

10. The method according to claim 8 wherein the exhaust stands are powered to move back and forth along the tracks.

11. The method according to claim 8 further comprising a maintenance platform that is configured to allow a person to stand on the maintenance platform and inspect or work on the exhaust assembly.

12. The method according to claim 8 wherein the rollers are configured to be removable from the rotor stands so as to be replaceable with other rollers having other sizes.

13. The method according to claim 8 wherein the exhaust stands are configured to be replaceable with other exhaust stands having other sizes.

Assignees

• Siemens Energy Inc

Inventors

• Edwards James B

Classifications

• F01D25/285 Primary

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

• F05D2230/72

  Maintenance · CPC title