Spray nozzle device for delivering a restorative coating through a hole in a case of a turbine engine

Patent metadata

Field	Value
Publication number	US-11745195-B2
Application number	US-202117360567-A
Country	US
Kind code	B2
Filing date	Jun 28, 2021
Priority date	Nov 14, 2017
Publication date	Sep 5, 2023
Grant date	Sep 5, 2023

Abstract

An atomizing spray nozzle device includes an atomizing zone housing that receives different phases of materials used to form a coating. The atomizing zone housing mixes the different phases of the materials into a two-phase mixture of ceramic-liquid droplets in a carrier gas. The device also includes a plenum housing fluidly coupled with the atomizing housing and extending from the atomizing housing to a delivery end. The plenum housing includes an interior plenum that receives the two-phase mixture of ceramic-liquid droplets in the carrier gas from the atomizing zone housing. The device also includes one or more delivery nozzles fluidly coupled with the plenum chamber. The delivery nozzles provide outlets from which the two-phase mixture of ceramic-liquid droplets in the carrier gas is delivered onto one or more surfaces of a target object as the coating on the target object.

First claim

What is claimed is:

1. An atomizing spray nozzle device comprising:
a housing having a first inlet and a second inlet that receive different phases of materials used to form a coating from coaxial tubes, the first inlet disposed inside the second inlet, the housing having an interior annular chamber that surrounds an interior body and that is shaped to mix different phases of materials into a two-phase mixture of ceramic-liquid droplets in a carrier gas within the interior annular chamber,
the housing including two or more delivery nozzles from which the two-phase mixture of the ceramic-liquid droplets are directed in the carrier gas onto surfaces of a turbine engine as a coating, wherein the two or more delivery nozzles include at least one delivery nozzle that is oriented in a radial direction away from a center axis of the housing and at least two delivery nozzles being at different angles with respect to one another to form a fan-like arrangement that provides for a larger coverage area, the center axis extending from the first inlet and the second inlet to a delivery end, and
at least a portion of the housing having a tapered shape that increases in size along the center axis.

2. The atomizing spray nozzle device of claim 1 , wherein the two or more delivery nozzles include plural nozzles that are elongated along directions oriented at different angles with respect to the center axis.

3. The atomizing spray nozzle device of claim 1 , wherein the tapered shape of the housing positions the at least two delivery nozzles at different angles in the fan-like arrangement.

4. The atomizing spray nozzle device of claim 1 , wherein the housing comprises an atomizing zone housing portion fluidly coupled with the first inlet and the second inlet, wherein the housing further comprises a plenum housing portion fluidly coupled with the atomizing zone housing portion and extending from the atomizing zone housing portion to a delivery end.

5. The atomizing spray nozzle device of claim 4 , wherein the plenum housing portion comprises an interior plenum chamber that is elongated along a center axis, wherein the interior plenum chamber is configured to receive the two-phase mixture of the ceramic-liquid droplets in the carrier gas from an atomizing zone around an exterior of a mandrel located inside the interior plenum chamber to compensate for a pressure reduction of the two-phase mixture of the ceramic-liquid droplets in the interior plenum chamber.

6. The atomizing spray nozzle device of claim 4 , wherein the plenum housing portion has a tapered shape that increases in cross-sectional size along the center axis from the atomizing zone housing portion to the delivery end.

7. The atomizing spray nozzle device of claim 4 , wherein the plenum housing portion has a convex bent shape from the atomizing zone housing portion to the delivery end.

8. The atomizing spray nozzle device of claim 1 , wherein the two or more delivery nozzles include a first nozzle and a second nozzle, the first nozzle being closer to the delivery end than the second nozzle, wherein the first nozzle is longer than the second nozzle due to an increasing tapered shape of the housing such that the housing is configured to deliver the two-phase mixture at a higher pressure at one end of the housing than another end of the housing.

9. The atomizing spray nozzle device of claim 5 , wherein the interior plenum chamber in provides for delivery of the two-phase mixture of the ceramic-liquid droplets in the carrier gas from the two or more delivery nozzles that creates a spray of the two-phase mixture of the ceramic-liquid droplets and a uniform coverage of the coating on the turbine engine.

10. The atomizing spray nozzle device of claim 5 , wherein the interior plenum chamber has a first cross-sectional area at a first location at an intersection between the atomizing zone and the plenum housing portion, a second cross-sectional area at a second location that is closer to the delivery end, and a third cross-sectional area at a third location that is between the first location and the second location, wherein the first cross-sectional area is smaller than the second cross-sectional area and the third cross-sectional area is smaller than the second cross-sectional area.

11. An atomizing spray nozzle device comprising:
a housing having a first inlet and a second inlet that receive different phases of materials used to form a coating from coaxial tubes, the second inlet encircling the first inlet, the housing having an interior annular chamber that that is shaped to mix different phases of materials into a two-phase mixture of ceramic-liquid droplets in a carrier gas, the housing including two or more delivery nozzles from which the two-phase mixture of the ceramic-liquid droplets are directed in the carrier gas onto surfaces of a turbine engine as a coating, and
at least a portion of an exterior surface of the housing having a tapered shape that increases in size along a center axis of the housing that extends from the first inlet and the second inlet to a delivery end such that some of the two or more delivery nozzles are of a different length.

12. The atomizing spray nozzle device of claim 11 , wherein the two or more delivery nozzles include two or more delivery nozzles located through the housing on one side along a length of the housing.

13. The atomizing spray nozzle device of claim 11 , wherein the housing comprises an atomizing zone housing portion fluidly coupled with the first inlet and the second inlet, wherein the housing further comprises a plenum housing portion fluidly coupled with the atomizing zone housing portion and extending from the atomizing zone housing portion to a delivery end.

14. The atomizing spray nozzle device of claim 13 , wherein the plenum housing portion comprises an interior plenum chamber that is elongated along a center axis, wherein the interior plenum chamber is configured to receive the two-phase mixture of the ceramic-liquid droplets in the carrier gas from an atomizing zone around an exterior of a mandrel located inside the interior plenum chamber to compensate for a pressure reduction of the two-phase mixture of the ceramic-liquid droplets in the interior plenum chamber.

15. The atomizing spray nozzle device of claim 14 , wherein the plenum housing portion has an interior surface that defines the interior plenum chamber, the interior surface having a curved portion that bows outward away from the center axis upstream of the two or more delivery nozzles.

16. The atomizing spray nozzle device of claim 14 , wherein the atomizing zone housing portion, the plenum housing portion, and the two or more delivery nozzles are sized to be inserted into one or more of a stage one nozzle borescope opening or a stage two nozzle borescope opening of the turbine engine.

17. The atomizing spray nozzle device of claim 14 , wherein the plenum housing portion has an interior surface that defines the interior plenum chamber, the interior surface having a first conical portion that tapers outward and a second conical portion that tapers inward upstream of the two or more delivery nozzles.

18. The atomizing spray nozzle device of claim 11 , wherein at least a portion of the interior annular chamber has a cross-sectional area that decreases in size along the center axis to result in a more uniform delivery of the two-phase mixture.

19. The atomizing spray nozzle device of claim 11 , wherein the two or more delivery nozzles include a first delivery nozzle and a second delivery nozzle, the fir

Assignees

• Gen Electric

Inventors

• Kulkarni Ambarish Jayant
• Keshavan Hrishikesh
• Dede Mehmet
• Bewlay Bernard Patrick
• Wang Guanghua
• Pritchard Byron
• Idelchik Michael Solomon

Classifications

• B05B7/045 Primary

  the gas and liquid flows being parallel just upstream the mixing chamber (B05B7/0458, B05B7/0466 take precedence) · CPC title

• B05B1/046

  Outlets formed, e.g. cut, in the circumference of tubular or spherical elements · CPC title

• B05B1/20

  Perforated pipes or troughs, e.g. spray booms; Outlet elements therefor · CPC title

• B05B1/3006

  the controlling element being actuated by the pressure of the fluid to be sprayed (B05B1/323 takes precedence; single-unit outlet valves actuated by the pressure of the fluid to be sprayed B05B11/0062) · CPC title

• B05B7/0012

  Apparatus for achieving spraying before discharge from the apparatus · CPC title