System and method for inspecting turbomachines

Patent metadata

Field	Value
Publication number	US-9683460-B2
Application number	US-201414588173-A
Country	US
Kind code	B2
Filing date	Dec 31, 2014
Priority date	Jul 11, 2014
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A method for inspecting a turbomachine is provided. The method includes the steps of, attaching a gimbal mount to the turbomachine, inserting a probe into the turbomachine through the gimbal mount, and adjusting a position of the probe via the gimbal mount. A removing step removes the probe from the turbomachine. An attaching step attaches a traverse actuator system to the gimbal mount. The traverse actuator system is connected to the gimbal mount through a pressure isolation system. A reinserting step is used to reinsert the probe back into the turbomachine. An inspecting step is used to inspect or test the turbomachine.

First claim

The invention claimed is:

1. A method for inspecting a turbomachine, the method comprising the steps of:
attaching a gimbal mount to the turbomachine;
inserting a probe into the turbomachine through the gimbal mount;
adjusting a position of the probe via the gimbal mount;
removing the probe from the turbomachine;
attaching a traverse actuator system to the gimbal mount, the gimbal mount comprising a plurality of turnbuckles located at equal intervals around the gimbal mount, and wherein the gimbal mount is configured to be mounted to a port or a vessel flange of the turbomachine, and adjustment of the turnbuckles translates into a tangential or axial adjustment of a sensor head position for the probe, the traverse actuator system is connected to the gimbal mount through a pressure isolation system;
reinserting the probe back into the turbomachine; and
inspecting or testing the turbomachine.

2. The method of claim 1 , wherein there are four turnbuckles located at 90 degree intervals around the gimbal mount, the adjusting a position of the probe step further comprising:
adjusting a first set of turnbuckles spaced by 180 degrees to move the probe in an axial direction with respect to the turbomachine, and adjusting a second set of turnbuckles spaced by 180 degrees to move the probe in a tangential direction with respect to the turbomachine;
wherein the first set of turnbuckles is 90 degrees offset from the second set of turnbuckles.

3. The method of claim 1 , the attaching a traverse actuator system step further comprising:
connecting a mounting plate to a complementary mounting plate, the mounting plate is attached to a rail, and the rail supports both the pressure isolation system and the gimbal mount, the mounting plate is configured to align with the complementary mounting plate connected to the traverse actuator system; and
wherein a plurality of keys are interposed between the mounting plate and the complementary mounting plate to ensure alignment between the traverse actuator system and the gimbal mount.

4. The method of claim 1 , wherein the inspecting step further comprises:
reading at least one of pressure values, temperature values or moisture values obtained from within the turbomachine.

5. The method of claim 1 , the probe further comprising at least one of:
a pressure probe having a plurality of ports, a moisture probe, a temperature probe, a camera.

6. The method of claim 1 , the probe further comprising:
a pressure probe having a plurality of ports, and an elongated shaft having a sensor head located at one end and a plurality of output ports located at an opposing end of the elongated shaft.

7. The method of claim 1 , the pressure isolation system further comprising:
a valve seal located between the gimbal mount and a pressure seal, the valve seal configured to isolate the pressure seal from the gimbal mount when the probe is not in the valve seal; and
a probe bearing located adjacent to the pressure seal, the probe bearing configured to facilitate back and forth movement of the probe by reducing friction.

8. The method of claim 7 , wherein the valve seal is at least one of:
a ball valve seal or a guillotine seal.

9. The method of claim 7 , wherein the probe bearing is comprised of at least one of:
roller bearings, ball bearings, or low friction material.

10. The method of claim 7 , further comprising the step of:
connecting the pressure seal to a pressurized source or a vacuum source.

11. The method of claim 1 , the traverse actuator system further comprising:
a carriage configured to move the probe into and out of the turbomachine;
a track having a plurality of linearly arranged teeth, the track configured for operation with the carriage; and
a motor operably connected with the carriage and track, the motor configured to engage the plurality of linearly arranged teeth so that operation of the motor forces the carriage to move along the track.

12. The method of claim 11 , the traverse actuator system further comprising:
an enclosure configured to operate in hazardous environments, the enclosure housing the motor; and
a yaw drive configured to rotate the probe about a radial axis of the turbomachine.

13. The method of claim 11 , the traverse actuator system further comprising:
monitoring an insertion location of the probe with a camera, the camera configured to operate in hazardous environments; and
wherein the camera is connected to a monitoring station having a display.

14. The method of claim 11 , the traverse actuator system further comprising:
a leg assembly attached to a rail of the traverse actuator system, the leg assembly configured to stabilize the traverse actuator system, the leg assembly having a plurality of adjustable length legs configured to lock in position at a desired length.

15. The method of claim 11 , the traverse actuator system further comprising:
an articulated cable guide comprised of a plurality of chain links, the articulated cable guide configured to retain a plurality of cables, and to follow movement of the carriage so that the cables avoid catching on obstructions.

16. A method for inspecting an operating turbomachine, the method comprising the steps of:
attaching a gimbal mount to the turbomachine, the gimbal mount comprising a plurality of turnbuckles located at equal intervals around the gimbal mount, and wherein the gimbal mount is configured to be mounted to a port or a vessel flange of the turbomachine, and adjustment of the turnbuckles translates into a tangential or axial adjustment of a sensor head position for a probe;
inserting the probe into the turbomachine through the gimbal mount;
adjusting a position of the probe via the gimbal mount;
removing the probe from the turbomachine;
attaching a traverse actuator system to the gimbal mount, the traverse actuator system is connected to the gimbal mount through a pressure isolation system, connecting a mounting plate to a complementary mounting plate, the mounting plate is attached to a rail, and the rail supports both the pressure isolation system and the gimbal mount, the mounting plate is configured to align with the complementary mounting plate connected to the traverse actuator system, a plurality of keys are interposed between the mounting plate and the complementary mounting plate to ensure alignment between the traverse actuator system and the gimbal mount;
reinserting the probe back into the turbomachine; and
inspecting or testing the turbomachine, and reading at least one of pressure values, temperature values or moisture values obtained from within the operating turbomachine.

17. The method of claim 16 , the probe further comprising at least one of:
a pressure probe having a plurality of ports, a moisture probe, a temperature probe, a camera, or an elongated shaft having a sensor head located at one end and a plurality of output ports located at an opposing end of the elongated shaft.

18. The method of claim 17 , the pressure isolation system further comprising:
a valve seal located between the gimbal mount and a pressure seal, the valve seal configured to isolate the pressure seal from the gimbal mount when the probe is not in the valve seal; and
a probe bearing located adjacent to the pressure seal, the probe bearing configured to facilitate back and forth movement of the probe by reducing friction, the probe bearing comprised of at least one of, roller bearings, ball bearings, or low friction material.

19. The method of claim 18 , the traverse actuator syst

Assignees

• Gen Electric

Inventors

• Moore Lawrence James
• Fuller Fredrick Levi
• Boss Jason Michael
• Zabek Bernard Baran
• Geraci Gerald Marco
• Pomykai Michael Richard

Classifications

• F05D2260/80

  Diagnostics · CPC title

• G05B2219/40607

  Fixed camera to observe workspace, object, workpiece, global · CPC title

• G01N25/00

  Investigating or analyzing materials by the use of thermal means (G01N3/00 - G01N23/00 take precedence) · CPC title

• G01M15/14

  Testing gas-turbine engines or jet-propulsion engines · CPC title

• B64D47/08

  Arrangements of cameras · CPC title