Squeegee apparatus and methods of use thereof

Patent metadata

Field	Value
Publication number	US-10646894-B2
Application number	US-201615199180-A
Country	US
Kind code	B2
Filing date	Jun 30, 2016
Priority date	Jun 30, 2016
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

The present invention is directed to a squeegee apparatus which includes a main housing including an inlet end and an outlet end, the outlet end including an extrusion face and a protruding lip member, the inlet end including an inlet opening and the extrusion face including at least one outlet opening, wherein the inlet opening and the at least one outlet opening are in fluid communication with each other within the main housing. The present invention is also directed to a method for repairing a thermal barrier coating with a squeegee apparatus including supplying a repair composition into the inlet opening of the squeegee apparatus and depositing the repair composition from the at least one outlet opening onto the damaged region and concurrently traversing the squeegee apparatus over the damaged region while contacting a thermal barrier coating adjacent to the damaged region with the lip member.

First claim

What is claimed is:

1. A system comprising:
a squeegee apparatus which includes a main housing comprising an inlet end and an outlet end, the outlet end comprising an extrusion face and a protruding lip member, wherein the lip member is flexible and elongated, the inlet end comprising an inlet opening and the extrusion face comprising at least one outlet opening, wherein the inlet opening and the at least one outlet opening are in fluid communication with each other within the main housing, wherein the squeegee apparatus is configured to dispense and apply a thermal barrier coating;
a repair composition storage apparatus that stores the thermal barrier coating and is configured to deliver the thermal barrier coating to the squeegee apparatus; and
a conduit through which the thermal barrier coating is delivered from the repair composition storage apparatus to the squeegee apparatus.

2. The system of claim 1 , wherein the at least one outlet opening is a plurality of outlet openings, and wherein the squeegee apparatus comprises a material comprising a shore hardness within a range of 26 to 77 on a Shore A hardness scale.

3. The system of claim 1 , wherein the extrusion face is elongated and positioned lengthwise adjacent to the lip member, and wherein the squeegee apparatus is composed of isobornyl acrylate.

4. The system of claim 1 , wherein the extrusion face is elongated and positioned lengthwise adjacent to the lip member, and wherein the at least one outlet opening is a plurality of outlet openings.

5. The system of claim 4 , wherein the main housing further comprises an internal chamber, wherein the internal chamber is in fluid communication with the inlet opening, and wherein the internal chamber is in fluid communication with the plurality of outlet openings via flow channels that are all parallel to each other and are located within the main housing.

6. The system of claim 1 , wherein the inlet end is mounted to an adaptor, the adaptor further mounted to an outlet end of the conduit, and wherein the adaptor comprises a sensor operable to detect presence of the thermal barrier coating in the adaptor.

7. The system of claim 6 , wherein the conduit further comprises an inlet end and wherein the inlet end of the conduit is mounted to the repair composition storage apparatus, and wherein the repair composition storage apparatus is operable to deliver the thermal barrier coating to the inlet opening via the conduit and the adaptor.

8. The system of claim 1 , wherein the lip member has a straight edge.

9. The system of claim 1 , wherein the lip member has a curved edge.

10. The system of claim 1 , wherein the main housing comprises an inlet opening that is in fluid communication with one outlet opening located within the main housing via a single flow channel that extends from the inlet opening to the one outlet opening.

11. The system of claim 1 , wherein the squeegee apparatus is composed of a heat resistant material comprising a polymerized density within a range of 1.12 g/cm 3 to 1.17 g/cm 3 .

12. The system of claim 1 , wherein the squeegee apparatus is composed of a material comprising a tensile strength between 0.8 MPa and 5.0 MPA.

13. The system of claim 11 , wherein the squeegee apparatus is composed of isobornyl acrylate, wherein the lip member has a length between 0.5 inches and 3.0 inches, and wherein an overall height of the squeegee apparatus is between 1.3 inches and 1.5 inches.

14. The system of claim 13 , wherein the lip member has a length between 1.4 inches and 1.6 inches, wherein an overall height of the squeegee apparatus is 1.4 inches, wherein the squeegee apparatus is composed of a material comprising an elongation at break from 45% to 220%, wherein the squeegee apparatus is composed of a material comprising a compressive set from 0.5% to 5.0%, wherein the squeegee apparatus is composed of a material comprising a shore hardness from 26 to 77 on a Shore A hardness scale, and wherein the squeegee apparatus is composed of a material comprising a tensile tear resistance from 2 Kg/cm to 12 Kg/cm.

15. A system turbine repair squeegee apparatus comprising:
a squeegee apparatus which includes a housing extending from an inlet end to an outlet end, the housing including a protruding, flexible, and elongated lip member along the outlet end, the housing including an inlet opening in the inlet end and outlet openings in the outlet end, the housing including an internal chamber and plural, parallel flow channels inside the housing that are all parallel to each other and that fluidly couple the inlet opening with the outlet openings, wherein the internal chamber, the flow channels, and the outlet openings are shaped to dispense a thermal barrier coating;
a repair composition storage apparatus that stores the thermal barrier coating and is configured to deliver the thermal barrier coating to the squeegee apparatus; and
a conduit through which the thermal barrier coating is delivered from the repair composition storage apparatus to the squeegee apparatus.

16. The system of claim 15 , wherein the inlet end is mounted to an adaptor, the adaptor further mounted to an outlet end of the conduit, and wherein the adaptor comprises a sensor operable to detect presence of the thermal barrier coating in the adaptor.

17. The system of claim 16 , wherein the conduit further comprises an inlet end and wherein the inlet end of the conduit is mounted to the repair composition storage apparatus, and wherein the repair composition storage apparatus is operable to deliver the thermal barrier coating to the inlet opening via the conduit and the adaptor.

18. A system comprising:
a squeegee apparatus which includes a main housing comprising an inlet end and an outlet end, the outlet end comprising an extrusion face and a protruding lip member, wherein the lip member is flexible and elongated, the inlet end comprising an inlet opening and the extrusion face comprising an outlet opening, wherein the inlet opening and the outlet opening are in fluid communication with each other within the main housing via a single flow channel that extends from the inlet end to the outlet end, wherein the squeegee apparatus is configured to dispense and apply a thermal barrier coating;
a repair composition storage apparatus that stores the thermal barrier coating and is configured to deliver the thermal barrier coating to the squeegee apparatus; and
a conduit through which the thermal barrier coating is delivered from the repair composition storage apparatus to the squeegee apparatus.

19. The system of claim 18 , wherein the squeegee apparatus is composed of isobornyl acrylate, wherein the lip member has a length between 0.5 inches and 3.0 inches, and wherein an overall height of the squeegee apparatus is between 1.3 inches and 1.5 inches.

20. The system of claim 18 , wherein the inlet end is mounted to an adaptor, the adaptor further mounted to an outlet end of the conduit, and wherein the adaptor comprises a sensor operable to detect presence of a repair composition in the adaptor.

Assignees

• Gen Electric

Inventors

• KUO Pei-Hsin
• Griffin Weston Blaine
• Venkataramani Venkat Subramaniam
• Keshavan Hrishikesh

Classifications

• B05C11/023

  Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface (B05C11/021, B05C11/04 take precedence) · CPC title

• B22F7/08

  with one or more parts not made from powder {(B22F7/062 takes precedence)} · CPC title

• B05C11/04

  with blades · CPC title

• B05C5/027

  Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated (B05C5/0254 takes precedence) · CPC title

• B22F5/009 Primary

  of turbine components other than turbine blades (of turbine blades B22F5/04) · CPC title