초록 ▼

A pressure relief valve, which can be pressure activated or thermally activated, includes a valve housing with an inlet communicating with an interior of a pressure vessel, and a passage from the inlet, through the housing, to an outlet for communicating with the exterior of the housing. A seal plug

A pressure relief valve, which can be pressure activated or thermally activated, includes a valve housing with an inlet communicating with an interior of a pressure vessel, and a passage from the inlet, through the housing, to an outlet for communicating with the exterior of the housing. A seal plug has a passageway which communicates between an inlet side of the passage and an outlet side of the passage. The seal plug is disposed within a cavity of the housing and across the passage. The seal plug retains a frangible disk against a radial shoulder of the passage for sealing the passage. Excessive pressures within the pressure vessel cause the frangible disk to rupture, thereby exposing a flow path between the inlet and the outlet through which the gas can escape. A thermal trigger engages the seal plug within the cavity to restrict movement of the seal plug and maintain a seal of the passage when a temperature adjacent to the housing is below a predetermined temperature threshold. The thermal trigger releases the seal plug, which is movable within the cavity, allowing the seal plug to relocate within the cavity when the temperature reaches the predetermined temperature threshold, thereby exposing a flow path between the inlet and outlet through which gas can escape.

대표청구항 ▼

A pressure relief valve for releasing pressure from a container, the relief valve comprising: a valve housing having a passage with an inlet for communicating with an interior of the container, and an outlet for communicating with an exterior of the valve housing; a seal, disposed within the passage

A pressure relief valve for releasing pressure from a container, the relief valve comprising: a valve housing having a passage with an inlet for communicating with an interior of the container, and an outlet for communicating with an exterior of the valve housing; a seal, disposed within the passage between the inlet and the outlet, for sealing the passage the seal capable of exposing the passage when pressure within the container exceeds a predetermined threshold; a movable member, disposed between the outlet and the seal and configured to be capable of moving away from the seal, for interrupting the seal when the ambient temperature adjacent to the relief valve reaches a predetermined threshold; and a thermally responsive device, mounted to the valve housing, for engaging the movable member and restraining the movable member from interrupting the seal when the ambient temperature adjacent to the relief valve is below the predetermined temperature threshold, and for disengaging the movable member when the ambient temperature adjacent to the relief valve reaches the predetermined temperature threshold so as to allow the movable member to interrupt the seal and expose a flow path through the passage from the inlet to the outlet.