Turbine component patch delivery systems and methods

Patent metadata

Field	Value
Publication number	US-10022921-B2
Application number	US-201414568458-A
Country	US
Kind code	B2
Filing date	Dec 12, 2014
Priority date	Dec 19, 2013
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A turbine component patch delivery system can include a compressed gas source fluidly connected to a delivery line comprising a dispensing end. The turbine component patch delivery system can further include one or more turbine component patch carriers that can be projected out of the dispensing end of the delivery line by the compressed gas source, wherein each of the one or more turbine component patch carriers comprise a turbine component patch material housed within a breakaway shell.

First claim

What is claimed is:

1. A turbine component repair patch delivery system comprising:
a compressed gas source;
a delivery line fluidly connected to the compressed gas source, wherein the delivery line comprises:
a deposition tool having a dispensing end, and supported by a flexible support arm;
an auxiliary patch application tool connected to the flexible support arm, and

one or more turbine component patch carriers that can be projected out of the dispensing end of the delivery line by the compressed gas source, wherein each of the one or more turbine component patch carriers comprise a turbine component repair patch material housed within a breakaway shell, and
wherein the auxiliary patch application tool is configured for facilitating locating a desired target location on a turbine component to be modified by the one or more turbine component patch carriers, while the turbine component is in situ within a partially or fully assembled turbine; and
wherein the turbine component repair patch material possesses a coefficient of thermal expansion that matches with the coefficient of thermal expansion of the desired target location.

2. The turbine component repair patch delivery system of claim 1 , wherein each of the one or more turbine component patch carriers houses from 1 mm 3 to 200 mm 3 of turbine component repair patch material.

3. The turbine component repair patch delivery system of claim 1 , wherein the auxiliary patch application tool comprises an optical system configured to provide an optical field of vision configured to include at least a portion of a projected path of the one or more turbine component patch carriers.

4. The turbine component repair patch delivery system of claim 1 , wherein the turbine component repair patch material comprises an environmentally resistant repair patch comprising:
one or more rare earth silicates;
wherein an inorganic composition of the environmentally resistant repair patch comprises, once cured, from about 80 mole percent to about 100 mole percent of a rare earth monosilicate and/or rare earth disilicate and from about 0 mole percent to about 20 mole percent of an inorganic additive; and,
wherein the environmentally resistant repair patch has, once cured, an adhesive strength of at least about 3 MPa and a coefficient of thermal expansion of from about 3.5×10 −6 /° C. to about 7.5×10 −6 /° C.

5. The turbine component repair patch delivery system of claim 1 , wherein the breakaway shell comprises at least one of a wax, gel, gelatin, denatured collagen, plasticizer or thermoplastic polymer.

6. The turbine component repair patch delivery system of claim 1 , wherein the compressed gas source comprises compressed CO 2 .

7. A turbine component repair patch delivery system comprising:
a compressed gas source;
a delivery line fluidly connected to the compressed gas source, wherein the delivery line comprises:
a deposition tool having a dispensing end, and supported by a flexible support arm;
an auxiliary patch application tool connected to the flexible support arm; and

one or more turbine component patch carriers that can be projected out of the dispensing end of the delivery line by the compressed gas source, wherein each of the one or more turbine component patch carriers comprise a turbine component repair patch material housed within a breakaway shell, and
wherein the auxiliary patch application tool comprises an optical system configured to provide an optical field of vision configured to include at least a portion of a projected path of the one or more turbine component patch carriers and for facilitating locating a desired target location on a turbine component to be modified by the one or more turbine component patch carriers, while the turbine component is in situ within a partially or fully assembled turbine; and
wherein the turbine component repair patch material possesses a coefficient of thermal expansion that matches with the coefficient of thermal expansion of the desired target location.

8. A turbine component repair patch delivery system comprising:
a compressed gas source;
a delivery line fluidly connected to the compressed gas source, wherein the delivery line comprises:
a deposition tool having a dispensing end, and supported by a flexible support arm;
an auxiliary patch application tool connected to the flexible support arm; and

one or more turbine component patch carriers that can be projected out of the dispensing end of the delivery line by the compressed gas source, wherein each of the one or more turbine component patch carriers comprise a turbine component repair patch material housed within a breakaway shell, wherein the turbine component repair patch material comprises an environmentally resistant patch material comprising:
one or more rare earth silicates, wherein an inorganic composition of the environmentally resistant patch comprises, once cured, from about 80 mole percent to about 100 mole percent of a rare earth monosilicate and/or rare earth disilicate and from about 0 mole percent to about 20 mole percent of an inorganic additive, and wherein the environmentally resistant patch has, once cured, an adhesive strength of at least about 3 MPa and a coefficient of thermal expansion of from about 3.5×10 −6 /° C. to about 7.5×10 −6 /° C.; and

wherein the auxiliary patch application tool comprises an optical system configured to provide an optical field of vision configured to include at least a portion of a projected path of the one or more turbine component patch carriers and for facilitating locating a desired target location on a turbine component to be modified by the one or more turbine component patch carriers, while the turbine component is in situ within a partially or fully assembled turbine; and
wherein the turbine component repair patch material possesses a coefficient of thermal expansion that matches with the coefficient of thermal expansion of the desired target location.

Assignees

• Gen Electric

Inventors

• Kittleson Jacob John
• Lipkin Don Mark

Classifications

• B29C73/025 Primary

  fed under pressure · CPC title

• B29L2031/08

  Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers · CPC title

• B23P6/04

  Repairing fractures or cracked metal parts or products, e.g. castings · CPC title

• B29K2103/04

  Inorganic materials · CPC title

• Y10T29/49318

  Repairing or disassembling · CPC title