Spray heads for use with desuperheaters and desuperheaters including such spray heads

Patent metadata

Field	Value
Publication number	US-11767973-B2
Application number	US-202217833869-A
Country	US
Kind code	B2
Filing date	Jun 6, 2022
Priority date	Nov 9, 2018
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

Spray heads for use with desuperheaters and desuperheaters including such spray heads. One example of a spray head includes a main body having an exterior surface and defining a central passage, the main body adapted for connection to a source of fluid, at least one entrance port formed in the main body along the central passage, and at least one spray nozzle arranged adjacent the exterior surface of the main body. The spray head also includes a plurality of flow passages, each of the plurality of flow passages providing fluid communication between the entrance port and an exit opening of the spray nozzle. A first one of the plurality of flow passages follows a first non-linear path and has a first distance, and a second one of the plurality of flow passages follows a second non-linear path and has a second distance different from the first distance.

First claim

What is claimed is:

1. A spray head for a desuperheater, comprising:
a main body having an outer wall and an inner wall spaced radially inwardly of the outer wall, the inner wall defining a central passage, the main body adapted for connection to a source of fluid;
at least one entrance port formed in the main body along the central passage;
at least one spray nozzle arranged adjacent the outer wall of the main body, the spray nozzle having at least one exit opening; and
a plurality of flow passages, each of the plurality of flow passages providing fluid communication between the entrance port and the exit opening of the spray nozzle,
wherein a first one of the plurality of flow passages follows a first non-linear path and a second one of the plurality of flow passages follows a second non-linear path, and
wherein at least a portion of each of the plurality of flow passages is disposed radially outwardly of the outer wall.

2. The spray head of claim 1 , wherein the at least one entrance port comprises a plurality of entrance ports and the at least one spray nozzle comprises a plurality of spray nozzles, and wherein each of the plurality of flow passages provides fluid communication between a corresponding one of the plurality of entrance ports and a corresponding one of the plurality of spray nozzles.

3. The spray head of claim 1 , wherein a majority of each of the plurality of flow passages is disposed radially outwardly of the outer wall.

4. The spray head of claim 1 , wherein the main body comprises a first open end and a second open end, and wherein the central passage extends between the first open end and the second open end.

5. The spray head of claim 1 , wherein the main body comprises a first end and a second end opposite the first end, and wherein each exit opening is spaced from the second end of the main body.

6. The spray head of claim 1 , wherein the spray nozzle includes a single chamber disposed between and fluidly connecting each of the flow passages and the exit opening of the spray nozzle.

7. The spray head of claim 6 , wherein each of the flow passages has an outlet that feeds into the single chamber, such that the flow passages are independently coupled to the single chamber.

8. The spray head of claim 1 , wherein the entrance port is formed in the inner wall at a position adjacent a first end of the main body, the first flow passage has an inlet in fluid communication with the entrance port, and an outlet in fluid communication with the exit opening of the spray nozzle, the outlet positioned adjacent a second end of the main body.

9. The spray head of claim 1 , wherein the spray nozzle includes a first chamber and a second chamber, wherein the first chamber is disposed between and fluidly connects the first flow passage and the exit opening of the spray nozzle, and wherein the second chamber is disposed between and fluidly connects the second flow passage and the exit opening of the spray nozzle.

10. The spray head of claim 1 , wherein the first flow passage has a first inlet that fluidly connects the entrance port with the exit opening, and wherein the second flow passage has a second inlet that fluidly connects the entrance port with the exit opening, the second inlet being separate from the first inlet.

11. A desuperheater, comprising:
a desuperheater body; and
a spray head coupled to the desuperheater body, the spray head comprising:
a main body having an outer wall and an inner wall spaced radially inwardly of the outer wall, the inner wall defining a central passage, the main body adapted for connection to a source of fluid;
at least one entrance port formed in the main body along the central passage;
at least one spray nozzle arranged adjacent the outer wall of the main body, the spray nozzle having at least one exit opening; and
a plurality of flow passages, each of the plurality of flow passages providing fluid communication between the entrance port and the exit opening of the spray nozzle,
wherein a first one of the plurality of flow passages follows a first non-linear path and a second one of the plurality of flow passages follows a second non-linear path, and
wherein at least a portion of each of the plurality of flow passages is disposed radially outwardly of the outer wall.

12. The desuperheater of claim 11 , wherein a majority of each of the plurality of flow passages is disposed radially outwardly of the outer wall.

13. The desuperheater of claim 11 , wherein the main body comprises a first open end and a second open end, and wherein the central passage extends between the first open end and the second open end.

14. The desuperheater of claim 11 , wherein the main body comprises a first end and a second end opposite the first end, and wherein each exit opening is spaced from the second end of the main body.

15. The desuperheater of claim 11 , wherein the spray nozzle includes a single chamber disposed between and fluidly connecting each of the flow passages and the exit opening of the spray nozzle, and wherein each of the flow passages has an outlet that feeds into the single chamber, such that the flow passages are independently coupled to the single chamber.

16. The desuperheater of claim 11 , wherein the spray nozzle includes a first chamber and a second chamber, wherein the first chamber is disposed between and fluidly connects the first flow passage and the exit opening of the spray nozzle, and wherein the second chamber is disposed between and fluidly connects the second flow passage and the exit opening of the spray nozzle.

17. The desuperheater of claim 11 , wherein the first flow passage has a first inlet that fluidly connects the entrance port with the exit opening, and wherein the second flow passage has a second inlet that fluidly connects the entrance port with the exit opening, the second inlet being separate from the first inlet.

18. The desuperheater of claim 11 , wherein the entrance port is formed in the inner wall at a position adjacent a first end of the main body, the first flow passage has an inlet in fluid communication with the entrance port, and an outlet in fluid communication with the exit opening of the spray nozzle, the outlet positioned adjacent a second end of the main body.

19. The desuperheater of claim 11 , wherein the spray head comprises first and second entrance ports, wherein the central passage extends along a longitudinal axis of the spray head, and wherein the first entrance port is spaced from the second entrance port along the longitudinal axis.

20. A method of manufacturing, comprising:
creating a spray head for a desuperheater using an additive manufacturing technique, the creating comprising:
forming a main body of the spray head having an outer wall and an inner wall spaced radially inwardly of the outer wall, the inner wall defining a central passage, the main body adapted for connection to a source of fluid;
forming at least one entrance port in the main body along the central passage;
forming at least one spray nozzle arranged adjacent the outer wall of the main body, the spray nozzle having at least one exit opening; and
forming a plurality of flow passages that provide fluid communication between the entrance port and the exit opening of the spray nozzle, wherein a first one of the plurality of flow passages follows a first non-linear path, wherein a second one of the plurality of flow passages follows a second non-linear path, and wherein at least a portion of each of the plurality of flow passages is disposed radial

Assignees

• Fisher Controls Int Llc

Inventors

• Huber Marc
• Loffel Kaspar
• Duda Thomas

Classifications

• F22G5/123 Primary

  Water injection apparatus · CPC title

• B05B7/04

  with arrangements for mixing liquids or other fluent materials before discharge (mixing in general B01F, e.g. B01F25/00; mixing valves F16K11/00) · CPC title

• B05B7/0458

  the gas and liquid flows being perpendicular just upstream the mixing chamber · CPC title

• B05B7/06

  with {at least} one outlet orifice surrounding another approximately in the same plane · CPC title

• F22G5/12

  by attemperating the superheated steam, e.g. by injected water sprays · CPC title