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US 10,941,345 B2Granted
Systems and methods for valve sealing
OwnerPaul Brent Voorheesinventor
Life of this patent
Estimating the term…
Abstract
A system for sealing an unheading or isolation valve in a petroleum refining process. Some aspects relate to a bellows seal for preventing leakage of petroleum product and steam within the valve. Some aspects relate to a restrictor for restricting the motion of a dynamic seat relative to a seat base structure.
Claims8
A valve sealing system for use in an unheading or isolation valve in a petroleum refining or chemical process, said sealing system comprising:
- a seat base structure fixably attached to a main body of said unheading or isolation valve;
- a dynamic seat movably attached to said seat base structure such that said dynamic seat can move with the contour of a valve blind;
- a restrictor for restricting the vertical movement of said dynamic seat relative to said seat base structure, wherein flanges on said restrictor engage base projections in said seat base structure and seat projections in said dynamic seat to restrict said movement.
Dependencies are inferred from the claim text.