Flue gas shut-off valve
AssigneeExxon Research & Engineering Co.
InventorsDonald F. Shaw, Arthur A. Lietz
Life of this patent
Estimating the term…
Abstract
The slide valve of the present invention is adapted for use in horizontal piping runs. It comprises a valve body, an orifice plate, a sliding plate and guide means for the sliding plate. The orifice plate is located in the valve body and inclined at an angle, .alpha., selected to achieve a predetermined seating force when the sliding plate, also inclined, is in the valve body in the closed position and bearing on the orifice plate. The guide means are provided for guiding the slide plate when it is moved in and out of the valve body under conditions of use.
Claims10
A sliding plate valve comprising:
- a valve body with a longitudinal flow passage therethrough, and a port in the side thereof;
- an orifice plate extending horizontally through the port into the flow passage of the valve body and transverse to the longitudinal axis of the valve body, said orifice plate having a central opening defined by an inclined seating surface, said opening and said seating surface located in the flow passage of the valve and said seating surface facing the flow of fluid under conditions of use;
- an incline sliding plate positioned for bearing on the inclined seating surface of the orifice plate;
- said orifice plate having guide means located at the bottom thereof, said orifice plate, said guide means and said sliding plate being inclined at an angle variably selected to provide a predetermined seating force which is a function of the weight of the sliding plate and said angle of each of said orifice plate, said sliding plate and said guide means to thereby minimize the magnitude of the weight of said sliding plate carried by said guide means.
A sliding plate valve comprising:
- a valve body with a longitudinal flow passage therethrough;
- an opening in the side of said valve body;
- a horizontally disposed valve bonnet covering said opening in said valve body;
- an orifice plate extending from the bonnet into the flow passage of the valve body and transverse to the longitudinal flow passage, said orifice plate having a central opening within the valve body, said central opening being surrounded by an inclined seating surface, said seating surface being located within the flow passage of the valve body and facing the flow of fluid under conditions of use;
- a reciprocally removable inclined plate positioned for bearing on the seating surface of said orifice plate when said valve is closed, guide means located at the top and bottom of said orifice plate, said guide means located at the bottom having an inclined supporting surface for said sliding plate, said giude means extending from said bonnet into said valve;
- said orifice plate said sliding plate and said inclined surface of said guide means, each inclined at an angle variably selected to provide a predetermined seating force between said orifice plate seating surface and said sliding plate which is a function of the weight of said sliding plate and said angle of each of said orifice plate, said sliding plate and said supporting surface of said guide means to thereby minimize the magnitude of the weight of said sliding plate carried by said guide means.
Dependencies are inferred from the claim text.