RESETTABLE THERMAL PRESSURE RELIEF DEVICE

摘要

A resettable thermal pressure relief device (TPRD) is disclosed. The TPRD includes a piston, a housing adapted to receive the piston and allow movement between an open and a closed position. The housing includes an actuator having a temperature sensitive material disposed therein. The temperature sensitive material volumetrically expands, increasing a length of the actuator and forcing a lever from a first position to a second position. The piston is held in the closed position by the lever in the first position. When the lever moves to the second position, the piston is allowed to move to the open position, allowing a fluid to flow through the TPRD from a high pressure vessel in communication therewith.

主权项

1. A resettable thermal pressure device (TPRD), comprising:
a housing having a first aperture and a second aperture allowing a fluid to flow through the housing; a piston slidably mounted in the housing and movable between an open position and a closed position, the piston sealing the second aperture when the piston is in the closed position; a lever disposed in the housing and having a first position which selectively militates against the piston moving into the open position; a lever spring adapted to bias the lever against the housing and selectively move the lever to the second position; and an actuator having a temperature sensitive material adapted to expand volumetrically with an increase in temperature, a collar coupled to the actuator, wherein the actuator facilitates a movement of the lever to the second position when a desired temperature is attained to allow the piston to move to the open position.