Back to results
US 2006/0124195 A1Published application
Fueling nozzle with integral molecular leak sensor
AssigneeAir Products and Chemicals, Inc.
InventorsJoseph Cohen, Frank Schweighardt
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeAir Products and Chemicals, Inc.
InventorsJoseph Cohen, Frank Schweighardt
Estimating the term…
An apparatus and process for measuring the concentration of hydrogen gas being transferred through a nozzle from a source container to a destination container and for providing an alert and/or taking action where hydrogen gas leaks may create an unsafe condition. The invention can accurately and reproducibly respond to and measure the absolute hydrogen gas concentration within the nozzle housing using hydrogen gas sensors that are selective only to hydrogen, which do not require the presence of oxygen to operate and which do not saturate when hydrogen safety levels are reached. These sensors are positioned inside the nozzle housing to allow for the direct and immediate knowledge of the presence of hydrogen gas that cannot be safely determined by other means. An apparatus and process for detecting leaks of liquid hydrogen through a nozzle during transfer of liquid hydrogen from a source container to a destination container are also discussed.
A nozzle for use in a transfer system for dispensing liquid hydrogen from a liquid hydrogen source into a container and for detecting the undesirable entry of oxygen into the system, said nozzle comprising:
A method for detecting the undesirable entry of oxygen into a transfer system that transfers liquid hydrogen from a liquid hydrogen source into a container, said method comprising the steps of:
A nozzle for use in a transfer system for dispensing liquid hydrogen from a liquid hydrogen source into a container and for detecting the undesirable entry of oxygen into the system, said nozzle comprising:
Dependencies are inferred from the claim text.