Multi-venturi inline desuperheater

Abstract

A multi-venturi plate for a desuperheater can include a body disposed within a steam flow path, a plurality of venturis through the body, a peripheral flow path in the body, and a plurality of supply flow paths in the body. The body can include a liquid inlet configured to receive liquid therein. The peripheral flow path can be in fluid communication with the liquid inlet. Each of the plurality of supply flow paths can be in fluid communication with the peripheral flow path and an outlet end of the multi-venturi plate.

What is claimed is: 
     
         1 . A multi-venturi plate for a desuperheater, the multi-venturi plate comprising:
 a body having a liquid inlet configured to receive liquid from a liquid supply;   an inlet end and an outlet end, wherein the inlet end is fluidically upstream of the outlet end;   a plurality of venturis disposed through the body, wherein each of the plurality of venturis has a venturi inlet in fluid communication with the inlet end of the multi-venturi plate, a venturi outlet in fluid communication with the outlet end of the multi-venturi plate, and a radially interior surface;   a peripheral flow path disposed in the body, wherein the peripheral flow path is in fluid communication with the liquid inlet; and   a plurality of supply flow paths disposed in the body;   wherein each of the plurality of supply flow paths has an inlet in fluid communication with the peripheral flow path and an outlet in fluid communication with the outlet end of the multi-venturi plate.   
     
     
         2 . The multi-venturi plate of  claim 1 , wherein the peripheral flow path is disposed radially between a central longitudinal axis of the multi-venturi plate and a peripheral exterior surface of the body. 
     
     
         3 . The multi-venturi plate of  claim 1 , further comprising a surrounding flow path having one or more outlets in fluid communication with the outlet end of the multi-venturi plate, wherein the surrounding flow path is in fluid communication with one or more of the plurality of supply flow paths, and wherein the surrounding flow path surrounds one of the venturis. 
     
     
         4 . The multi-venturi plate of  claim 3 , wherein a cross-sectional flow area of the surrounding flow path differs from a cross-sectional flow area of at least one of the peripheral flow path, one or more of the plurality of supply flow paths, and a combination thereof. 
     
     
         5 . The multi-venturi plate of  claim 3 , wherein a cross-sectional flow area of the surrounding flow path equals a cross-sectional flow area of one of the plurality of supply flow paths. 
     
     
         6 . The multi-venturi plate of  claim 5 , wherein the cross-sectional flow area of the surrounding flow path differs from a cross-sectional flow area of another one of the plurality of supply flow paths. 
     
     
         7 . The multi-venturi plate of  claim 3 , wherein the surrounding flow path is annular, and wherein the peripheral flow path and the surrounding flow path have a common central longitudinal axis. 
     
     
         8 . The multi-venturi plate of  claim 1 , wherein the plurality of supply flow paths comprises a plurality of supply flow paths in fluid communication with the radially interior surface of a corresponding one of the plurality of venturis. 
     
     
         9 . The multi-venturi plate of  claim 1 , wherein the plurality of supply flow paths comprises a first set of supply flow paths in fluid communication with the radially interior surface of a corresponding one of the plurality of venturis and a second set of supply flow paths in fluid communication with the radially interior surface of another corresponding one of the plurality of venturis. 
     
     
         10 . The multi-venturi plate of  claim 1 , wherein the plurality of venturis comprises a central venturi having a common central longitudinal axis with the multi-venturi plate, and a plurality of peripheral venturis positioned radially outwardly of the central venturi. 
     
     
         11 . The multi-venturi plate of  claim 10 , wherein the plurality of peripheral venturis is positioned radially inwardly of the peripheral flow path. 
     
     
         12 . The multi-venturi plate of  claim 11 , further comprising a surrounding flow path having one or more outlets in fluid communication with the outlet end of the multi-venturi plate, wherein the surrounding flow path is in fluid communication with one or more of the plurality of supply flow paths, and wherein the plurality of peripheral venturis is positioned radially outwardly of the surrounding flow path. 
     
     
         13 . The multi-venturi plate of  claim 1 , wherein the peripheral flow path is configured to route liquid about at least a portion of the periphery of the body. 
     
     
         14 . The multi-venturi plate of  claim 1 , further comprising a plurality of surrounding flow paths, each surrounding flow paths having one or more outlets in fluid communication with the outlet end of the multi-venturi plate, wherein each surrounding flow path surrounds one of the venturis. 
     
     
         15 . A desuperheater, comprising:
 a desuperheater body having a steam inlet, a steam outlet, and a steam flow path from the steam inlet to the steam outlet;   an injection chamber disposed in the steam flow path;   a liquid supply conduit in fluid communication with the injection chamber; and   a multi-venturi plate disposed within the injection chamber, the multi-venturi plate comprising
 a body having a liquid inlet in fluid communication with the liquid supply conduit; 
 an inlet end and an outlet end, wherein the inlet end is fluidically upstream of the outlet end; 
 a plurality of venturis disposed through the body, wherein each of the plurality of venturis has a venturi inlet in fluid communication with the inlet end of the multi-venturi plate, a venturi outlet in fluid communication with the outlet end of the multi-venturi plate, and a radially interior surface; 
 a peripheral flow path disposed in the body, wherein the peripheral flow path is in fluid communication with the liquid inlet; and 
 a plurality of supply flow paths disposed in the body; 
 wherein each of the plurality of supply flow paths has an inlet in fluid communication with the peripheral flow path and an outlet in fluid communication with the outlet end of the multi-venturi plate. 
   
     
     
         16 . The desuperheater of  claim 15 , further comprising a surrounding flow path having one or more outlets in fluid communication with the outlet end of the multi-venturi plate, wherein the surrounding flow path is in fluid communication with one or more of the plurality of supply flow paths, and wherein the surrounding flow path surrounds one of the venturis. 
     
     
         17 . The desuperheater of  claim 15 , wherein the plurality of venturis comprises a central venturi having a common central longitudinal axis with the multi-venturi plate, and a plurality of peripheral venturis positioned radially outwardly of the central venturi. 
     
     
         18 . The desuperheater of  claim 17 , wherein the plurality of peripheral venturis is positioned radially inwardly of the peripheral flow path. 
     
     
         19 . The desuperheater of  claim 18 , further comprising a surrounding flow path having one or more outlets in fluid communication with the outlet end of the multi-venturi plate, wherein the surrounding flow path is in fluid communication with one or more of the plurality of supply flow paths, and wherein the plurality of peripheral venturis is positioned radially outwardly of the surrounding flow path. 
     
     
         20 . The desuperheater of  claim 15 , further comprising a plurality of surrounding flow paths, each surrounding flow path having one or more outlets in fluid communication with the outlet end of the multi-venturi plate, wherein each surrounding flow path surrounds one of the venturis.