Sensor integrated glass bulb temperature pressure relief device design for hydrogen storage systems

Patent metadata

Field	Value
Publication number	US-9012103-B2
Application number	US-201313759380-A
Country	US
Kind code	B2
Filing date	Feb 5, 2013
Priority date	Feb 5, 2013
Publication date	Apr 21, 2015
Grant date	Apr 21, 2015

Abstract

A TPRD for a high pressure storage vessel including an integrated pressure sensor cooperative with an activation mechanism and a method of monitoring a TPRD for use in a fuel cell system. The TPRD comprises a release piston, moveable between an open and a closed position, which controls the flow of gas from a fuel storage vessel through a gas outlet port. The thermally activated activation mechanism comprises a gas-inlet chamber and a liquid-filled bulb having an air bubble. Upon activation, the release piston moves from the closed position to the open position. The integrated pressure sensor detects the pressure within the TPRD. A difference in pressure between that of the fluid within the fuel storage vessel and the pressure within the TPRD provides indicia of impaired movement of the release piston.

First claim

What is claimed is:

1. A temperature pressure relief device for use with a fuel storage tank, the device comprising:
a housing having a conduit and a gas outlet port allowing a gas to flow through the housing from the fuel storage tank, and a release piston disposed within the conduit which is moveable between an open and a closed position such that when in the closed position gas cannot flow from the fuel storage tank to the gas outlet port;
an activation mechanism comprising a…

Assignees

• Gm Global Tech Operations Inc

Inventors

• Heise Axel

Classifications

• F16K31/002 Primary

  Mechanical Engineering · mapped topic

• F16K17/383 Primary

  Mechanical Engineering · mapped topic

• F16K37/0091 Primary

  Mechanical Engineering · mapped topic

• F17C13/04

  Mechanical Engineering · mapped topic

• H01M8/04201

  Electricity · mapped topic