Cycle valve for use in hydromethanation process

摘要

A cycle valve can include a valve body and a dynamic sealing spool assembly contained within the interior of the valve body. The dynamic sealing spool assembly includes a sleeve and a gate cartridge assembly which slides within the sleeve between an open and a closed position. The sleeve can include a sleeve opening while the gate cartridge assembly can include two openings, each of which includes a dynamic seat assembly. The dynamic seat assembly in one opening can be formed by upper and lower dynamic seats configured as solid blocks which seal the pathway through the valve when the gate cartridge assembly is in the closed position. The dynamic seat assembly in the other opening can be formed by upper and lower dynamic seats configured as cylinders which form the pathway through the valve when the gate cartridge assembly is in the open position.

主权项

1. A valve comprising:
a valve body having a first flange, a first cover configured to attach to the first flange, a first port, and a second port, the first and second ports forming ports of a pathway through the valve body; a sleeve inserted through the first flange into an interior of the valve body, the sleeve having a sleeve opening that aligns with the first and second ports; a piston gate configured to insert into the sleeve, the piston gate having a first opening configured to align with the sleeve opening when the piston gate is in an open position and a second opening configured to align with the sleeve opening when the piston gate is in a closed position; a first dynamic seat assembly contained within the first opening of the piston gate, the first dynamic seat assembly comprising a first upper dynamic seat, a first lower dynamic seat, and a plurality of springs positioned between the first upper dynamic seat and the first lower dynamic seat to bias the first upper dynamic seat and first lower dynamic seat against an inner surface of the sleeve surrounding the sleeve opening when the piston gate is in the open position, the first upper dynamic seat and the first lower dynamic seat each having a cylindrical shape that forms the pathway between the first and second ports when the piston gate is in the open position; and a second dynamic seat assembly contained within the second opening of the piston gate, the second dynamic seat assembly comprising a second upper dynamic seat, a second lower dynamic seat, and a second plurality of springs positioned between the second upper dynamic seat and the second lower dynamic seat to bias the second upper dynamic seat and second lower dynamic seat against the inner surface of the sleeve surrounding the sleeve opening when the piston gate is in the closed position, the second upper dynamic seat and the second lower dynamic seat comprising solid blocks that cover the sleeve opening to block the pathway between the first and second ports when the piston gate is in the closed position.