Check valve for cryogenic fluid
AssigneeDong-A University Research Foundation for Industry-Academy Cooperation
InventorsSeungho HAN, Hyolim KANG, Juhyang PARK, Haeseong HWANG
Life of this patent
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Abstract
A check valve for cryogenic fluid includes: a valve body which is formed to have an inlet and an outlet open at both ends thereof, a valve seat which is formed inside the valve body to communicate with the inlet; a disk which is pivoted up and down at the upper end thereof about a pivot axis provided in the valve body to open and close the valve seat; and a sealing member which is made of a metal material shrinkable by cryogenic fluid introduced through the inlet, is provided in the circumferential direction of the valve seat, and when the disk closes the valve seat, is brought into close contact with the edge portion of the disk to produce sealing effects.
Claims10
A check valve for cryogenic fluid, comprising:
- a valve body formed to have an inlet and an outlet open at the both ends thereof;
- a valve seat formed inside the valve body to communicate with the inlet;
- a disk pivoted up and down at the upper end thereof around a pivot axis provided in the valve body to open and close the valve seat;
- and
- a sealing member that is made of metal contracted and deformed by cryogenic fluid introduced through the inlet, is provided in the circumferential direction of the valve seat, and, when the disk closes the valve seat, is brought into close contact with the edge portion of the disk to produce sealing effects.
A check valve for cryogenic fluid, comprising:
- a valve body formed to have an inlet and an outlet open at the both ends thereof,
- a valve seat formed inside the valve body to communicate with the inlet;
- a disk pivoted up and down at the upper end thereof around a pivot axis provided in the valve body to open and close the valve seat;
- an insulating pocket in the shape of a pocket installed on the rear surface of the disk;
- and
- an elastic member installed inside the insulating pocket to provide elastic force to the disk so that the disk is elastically in contact with the upper end of the valve body when rotating upward to open the valve seat.
Dependencies are inferred from the claim text.