Steam conditioning valve
OwnerDavid John Marleyinventor
Life of this patent
Estimating the term…
Abstract
A steam conditioning valve having a multi-turn labyrinth disk stack mounted between the inlet and the outlet of the valve is provided with a cooling fluid spray assembly for injecting the cooling fluid into the valve upstream of the labyrinth. The spray assembly includes a cooling fluid supply line extending through the valve housing without physically contacting the housing to prevent heat transfer between the cooling fluid line and the valve housing.
Claims12
A steam conditioning valve for reducing high temperature high pressure steam at the inlet of the valve to low temperature low pressure steam at the outlet of the valve comprising:
- a valve housing having a steam inlet area and a steam outlet area;
- a series of members forming a multi-turn labyrinth mounted in said valve housing between the inlet area and the outlet area to require the steam to flow through the multi-turn labyrinth before reaching the outlet area;
- an orifice member spacedly mounted in the inlet area of said valve housing to prevent substantial physical contact with said valve housing, said orifice member also being mounted proximate to said series of members for spraying cooling fluid into the inlet area side of said series of members;
- and
- a cooling fluid line spacedly extending through said valve housing to prevent substantial physical contact with said valve housing and being connected to said orifice member to supply cooling fluid to said orifice member.
A device for conditioning steam to reduce its temperature and pressure comprising:
- a housing having a steam inlet and a steam outlet;
- pressure reducing means, located between the inlet and the outlet of said housing, for reducing the pressure of steam flowing from the inlet to the outlet, said pressure reducing means including a stack of members forming a multi-turn labyrinth for the flow of steam and cooling fluid therethrough and having a circular bore therein providing an inlet to the multi-turn labyrinth;
- a valve plug movable within the circular bore of said stack to control the entry of steam and cooling fluid into the multi-turn labyrinth of said stack of annular members, said valve plug having a passageway formed therein to extend longitudinally therethrough for balancing the steam pressure across said valve plug;
- spray means, mounted in said housing, for injecting cooling fluid into the stream;
- and
- supply means for supplying cooling fluid to said spray means in said housing with substantially no physical contact between said supply means and said housing.
Dependencies are inferred from the claim text.