Installation or removal of turbine blade at turbine blade base

Patent metadata

Field	Value
Publication number	US-11014205-B2
Application number	US-201715730961-A
Country	US
Kind code	B2
Filing date	Oct 12, 2017
Priority date	Nov 4, 2016
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

Embodiments of the present disclosure relate to the installation or removal of turbine blades at a turbine blade base thereof. An apparatus according to the present disclosure can include: an operative head configured to engage an axial sidewall of a turbine blade base; and a mount removably coupled to a portion of a turbomachine assembly by a coupler, wherein the operative head is slidably coupled to the mount such that the operative selectively engages the axial sidewall of the turbine blade base, and wherein the operative head is shaped to impart an axial and a circumferential force against the turbine blade base.

First claim

What is claimed is:

1. An apparatus for installation or removal of a turbine blade,
the apparatus comprising:
an operative head configured to engage an axial sidewall of a turbine blade base; and
a mount removably coupled to a portion of a turbomachine assembly by a coupler, wherein the operative head is slidably coupled to the mount such that the operative head selectively engages the axial sidewall of the turbine blade base, and wherein the operative head is shaped to impart an axial and a circumferential force against the turbine blade base, wherein the operative head includes a roller configured to rotate about an eccentric axis relative to the turbomachine assembly.

2. The apparatus of claim 1 , further including a vibrating assembly including a vibratory drive mechanism coupled to the operative head.

3. The apparatus of claim 1 , wherein the operative head is further shaped to axially displace a turbine blade having an interlocking shroud profile.

4. The apparatus of claim 1 , further including:
at least one lift member coupled to the mount; and
a lash extending through the at least one lift member and coupled to the turbomachine assembly, such that the at least one lift member mechanically couples the mount to the turbomachine assembly through the lash.

5. The apparatus of claim 1 , wherein the coupler includes at least one hook configured to engage an axial sidewall of the turbomachine assembly.

6. The apparatus of claim 1 , further including a spring axially coupled to the operative head, wherein the spring in an equilibrium position axially separates the operative head from the turbine blade base.

7. An apparatus for installation or removal of a turbine blade at a turbine blade base thereof, the apparatus comprising:
an operative head configured to engage an axial sidewall of the turbine blade base, wherein the operative head is shaped to impart an axial and a circumferential force against the turbine blade base;
an actuator configured to move the operative head into and out of engagement with the axial sidewall of the turbine blade base; and
a mount removably coupled to a portion of a turbomachine assembly by a coupler, wherein the actuator is slidably coupled to an exterior surface of the mount, further including a spring axially coupled to the operative head, wherein the spring, in an equilibrium position, axially separates the operative head from the turbine blade base.

8. The apparatus of claim 7 , further including a vibrating assembly mechanically coupled to the operative head, wherein the vibrating assembly includes a vibratory drive mechanism coupled to a fluid source through a fluid coupling, wherein the fluid source is removably attached to the turbomachine assembly.

9. The apparatus of claim 8 , wherein the vibratory drive mechanism is configured to impart a vibratory force through the operative head such that the vibratory force axially moves the turbine blade into or out contact with an interlocking shroud profile of an adjacent turbine blade.

10. The apparatus of claim 7 , wherein an interior radial surface of the mount defines an axial plane, and wherein the operative head includes a roller configured to rotate about a substantially radial axis relative to the turbomachine assembly, and within the axial plane of the lower surface of the mount.

11. The apparatus of claim 7 , further including:
at least one lift member coupled to the mount; and
a lash extending through the at least one lift member and coupled to the turbomachine assembly, such that the at least one lift member mechanically couples the mount to the turbomachine assembly through the lash.

12. The apparatus of claim 7 , further including a pair of circumferentially spaced guide rails positioned on the mount and coupled to the actuator, wherein a circumferential separation distance between the circumferentially spaced guide rails is substantially equal to a circumferential length of the turbine blade base.

13. The apparatus of claim 1 , further including a vibrating assembly mechanically coupled to the operative head, wherein the vibrating assembly includes a vibratory drive mechanism coupled to a fluid source through a fluid coupling, wherein the fluid source is removably attached to the turbomachine assembly.

14. The apparatus of claim 13 , wherein the vibratory drive mechanism is configured to impart a vibratory force through the operative head such that the vibratory force axially moves the turbine blade into or out of contact with an interlocking shroud profile of an adjacent turbine blade.

15. The apparatus of claim 2 , wherein the vibratory drive mechanism is configured to impart a vibratory force through the operative head such that the vibratory force axially moves the turbine blade into or out of contact with an interlocking shroud profile of an adjacent turbine blade.

16. An apparatus for installation or removal of a turbine blade, the apparatus comprising:
an operative head configured to engage an axial sidewall of a turbine blade base; and
a mount removably coupled to a portion of a turbomachine assembly by a coupler, wherein the operative head is slidably coupled to the mount such that the operative head selectively engages the axial sidewall of the turbine blade base, and wherein the operative head is shaped to impart an axial and a circumferential force against the turbine blade base, wherein an interior radial surface of the mount defines an axial plane, and wherein the operative head includes a roller configured to rotate about a substantially radial axis relative to the turbomachine assembly, and within the axial plane of the lower surface of the mount.

17. The apparatus of claim 1 , further including an actuator configured to move the operative head into and out of engagement with the axial sidewall of the turbine blade base.

18. The apparatus of claim 17 , further including a pair of circumferentially spaced guide rails positioned on the mount and coupled to the actuator, wherein a circumferential separation distance between the circumferentially spaced guide rails is substantially equal to a circumferential length of the turbine blade base.

Assignees

• Gen Electric

Inventors

• Wojtowicz Hubert Karol
• Kolvick Sandra Beverly
• Sullivan Wayne David

Classifications

• F01D5/005 Primary

  Repairing methods or devices · CPC title

• F01D25/285

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

• F05D2230/70

  Disassembly methods · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F01D5/225

  by shrouding · CPC title