Patent ID: 7028994
Filing Date: 2006-04-18
Classification: B05B,F22G,F28C,F28F,Y10S,Y10T

Abstract:
1. A nozzle assembly for a desuperheating device configured for spraying cooling water, the nozzle assembly comprising: a nozzle housing having a housing inlet and a housing outlet fluidly interconnected by a plurality of housing passages, the housing outlet defining a valve seat; and a valve element disposed within the nozzle housing and axially slidable therewithin between a closed and an open position, the valve element having a truncated conical valve body including a conical outer surface and a concave inner surface a portion of the conical valve body extending downstream of the valve seat, the inner and outer surfaces collectively defining a body wall with a plurality of valve apertures extending therethrough the apertures being provided within the portion of the conical valve body that extends downstream of the valve seat; wherein the outer surface is sealingly engagable to the valve seat such that the flow of cooling water through the valve apertures is prevented when the valve element is in the closed position, the outer surface and the valve seat collectively defining an annular gap when the valve element is axially displaced to the open position such that a portion of the cooling water flowing through the annular gap may subsequently pass through the valve apertures.