Desuperheater and spray nozzles therefor

Patent metadata

Field	Value
Publication number	US-11248784-B2
Application number	US-201816133298-A
Country	US
Kind code	B2
Filing date	Sep 17, 2018
Priority date	Jun 7, 2018
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A desuperheater includes a ring body defining an axial flow path and one or more spray nozzle assemblies around the ring body. Each spray nozzle assembly is connected to a separate water manifold and steam manifold to provide cooling water and atomizing steam through the spray nozzle assemblies. A nozzle sleeve of each spray nozzle assembly has a solid, unitary body having first, second, and third fluid passages formed through the body. The first fluid passage is in fluid communication with the water manifold and with a first exit aperture formed in a second end of the body. The second fluid passage is in fluid communication with the steam manifold and with a second exit aperture formed in the second end of the body. The third fluid passage is in fluid communication with the steam manifold and with a third exit aperture formed in the second end of the body. The second and third exit apertures are positioned on opposite sides of the first exit aperture.

First claim

What is claimed:

1. A spray nozzle assembly for a desuperheater, the spray nozzle assembly comprising:
a housing having a body and a cap flange secured to the body, the body and the cap flange defining a bore within the housing;
a first aperture formed through the body and intersecting the bore;
a second aperture formed through the cap flange and intersecting the bore; and
a nozzle sleeve disposed within the bore, the nozzle sleeve comprising:
a solid, unitary sleeve body;
a first fluid passage formed through the sleeve body and in direct fluid communication with the first aperture and with a first exit aperture formed in a second end of the sleeve body;
a second fluid passage formed through the sleeve body and in direct fluid communication with the second aperture and with a second exit aperture formed in the second end of the sleeve body; and
a third fluid passage formed through the sleeve body and in direct fluid communication with the second aperture and with a third exit aperture formed in the second end of the sleeve body; wherein
the second and third exit apertures are positioned on opposite sides of the first exit aperture.

2. A desuperheater comprising a plurality of the spray nozzle assemblies of claim 1 , the desuperheater comprising:
a ring body defining an axial flow path;
the plurality of spray nozzle assemblies disposed around the ring body;
a water manifold connected to the first aperture of each of the spray nozzle assemblies for providing cooling water to each of the spray nozzle assemblies; and
a steam manifold connected to the second aperture of each of the spray nozzle assemblies for providing atomizing steam to each of the spray nozzle assemblies, separately from the cooling water.

3. The desuperheater of claim 2 , wherein:
the first fluid passage is in fluid communication with the water manifold through the first aperture;
the second fluid passage is in fluid communication with the steam manifold through the second aperture; and
the third fluid passage is in fluid communication with the steam manifold through the second aperture.

4. The desuperheater of claim 2 , wherein the first fluid passage comprises a first section that extends radially across the body and a second section that intersects the first section and extends longitudinally along the body.

5. The desuperheater of claim 2 , wherein the second fluid passage comprises a first section that extends longitudinally along the body, a third section that extends longitudinally along the body, and a second section interconnecting the first and third sections, the second section forming a helix around the first fluid passage.

6. The desuperheater of claim 5 , wherein:
the third fluid passage comprises a first section that extends longitudinally along the body, a third section that extends longitudinally along the body, and a second section interconnecting the first and third sections, the second section forming a helix around the first fluid passage; and
the first sections of the second and third fluid passages are positioned on opposite sides of the first fluid passage, the second sections of the second and third fluid passages are positioned on opposite sides of the first fluid passage, and the third sections of the second and third fluid passages are positioned on opposite sides of the first fluid passage.

7. The desuperheater of claim 2 , wherein:
the second end of the body comprises a planar first surface that extends perpendicular to a longitudinal axis of the nozzle sleeve and a planar second surface that extends from the first surface and at an acute angle to the longitudinal axis of the nozzle sleeve;
the second exit aperture is formed through the first surface; and
the first and third exit apertures are formed through the second surface.

8. The desuperheater of claim 7 , wherein the first, second, and third exit apertures are linearly extending slots.

9. The desuperheater of claim 7 , wherein the first exit aperture is elliptical and the second and third exit apertures are arcuately extending slots.

10. The desuperheater of claim 2 , wherein:
the second end of the body comprises a planar first surface that extends perpendicular to a longitudinal axis of the nozzle sleeve, a planar second surface that extends from the first surface and at an acute angle to the longitudinal axis of the nozzle sleeve, and a planar third surface that extends from the second surface and parallel to the longitudinal axis of the nozzle sleeve;
the second exit aperture is formed through the first surface;
the first exit aperture is formed through the second surface; and
the third exit aperture is formed through the third surface.

11. The desuperheater of claim 10 , wherein the first, second, and third exit apertures are linearly extending slots.

12. The desuperheater of claim 10 , wherein the first exit aperture is elliptical and the second and third exit apertures are arcuately extending slots.

13. The desuperheater of claim 2 , wherein the first fluid passage comprises:
a first section that extends radially across the body;
a second section that intersects the first section and extends longitudinally along the body; and
an annular section that intersect the second section and the first exit aperture.

14. The desuperheater of claim 13 , wherein the first exit aperture comprises a plurality of holes positioned in a circular pattern through the second end of the body.

15. The desuperheater of claim 13 , wherein:
the second fluid passage comprises a first section that extends longitudinally along the body, a second section that extends from the first section, radially inward through the body, and turns to extend longitudinally through the body, and a third section that extends from the first section longitudinally through the body;
the third fluid passage comprises a first section that extends longitudinally along the body on an opposite side of the body from the first fluid passage, a second section that extends from the first section, radially inward through the body, and turns to extend longitudinally through the body, and a third section that extends from the first section longitudinally through the body;
the second section of the second fluid passage and the second section of the third fluid passage merge together, pass through annular section, and are in fluid communication with the second exit aperture; and
the third section of the second fluid passage and the third section of the third fluid passage intersect the third exit aperture, which is an annular, ring-shaped aperture.

16. The spray nozzle assembly of claim 1 , wherein the first fluid passage comprises a first section that extends radially across the sleeve body and a second section that intersects the first section and extends longitudinally along the sleeve body.

17. The spray nozzle assembly of claim 1 , wherein:
the second end of the sleeve body comprises a planar first surface that extends perpendicular to a longitudinal axis of the nozzle sleeve and a planar second surface that extends from the first surface and at an acute angle to the longitudinal axis of the nozzle sleeve;
the second exit aperture is formed through the first surface; and
the first and third exit apertures are formed through the second surface.

18. The spray nozzle assembly of claim 17 , wherein the first, second, and third exit apertures are linearly extending slots.

19. The spray nozzle assembly of claim 17 , wherein the first exit aperture is elliptical and the second and third exit ap

Assignees

• Fisher Controls Int Llc

Inventors

• Goodwin Justin P
• Johnson Shane M
• Rhamy Rusty C
• Talbert Daniel M

Classifications

• B05B7/0458

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

• F28C3/08

  with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) · CPC title

• B05B13/0278

  Arrangement or mounting of spray heads (B05B13/0207 takes precedence) · CPC title

• F22G5/123 Primary

  Water injection apparatus · CPC title

• B05B1/044

  Slits, e.g. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains (B05B1/046 takes precedence) · CPC title