Systems and methods for passively controlling pressure within a cryogenic storage tank

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United States of America Patent

PATENT NO 11563222
SERIAL NO

15443668

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An all mechanically controlled, non-venting pressure control system for liquid hydrogen and liquid oxygen cryogenic tanks that requires no electrical control while managing disparate, non-stoichiometric reactant boil-off rates is provided. The pressure control system allows for the passive and repeatable stoichiometric consumption of hydrogen and oxygen boil-off from cryogenic tanks to form liquid water, while preventing the liquid hydrogen and liquid oxygen cryogenic tanks from overpressurizing and venting to the external environment. More particularly, in response to an overpressure condition in a first reactant reservoir, a backpressure regulator is opened, providing the overpressure first reactant to a fuel cell or other consumer, and providing a pilot signal to open a supply line from a second reactant reservoir to the consumer. Whether the second reactant is supplied from the second reactant reservoir as gas or a liquid is determined based on the pressure within the second reactant reservoir.

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Patent Owner(s)

  • BALL AEROSPACE & TECHNOLOGIES CORP.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Schmidt, Jeffrey A Longmont, US 48 997

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