An embodiment device for detecting a leak in a hydrogen storing system includes a case having an accommodation space defined therein, wherein the accommodation space is configured to accommodate a plurality of storage tanks and a component part therein, the component part including a component configured to fill a fuel into the plurality of storage tanks or supply the fuel to a fuel consumer, and a sensor part disposed in the case, the sensor part including a pressure sensor configured to measure a pressure of a fluid inside the accommodation space and a temperature sensor configured to detect a temperature of the fluid.

Disclosed is a pneumatic membrane gasometer for the storage of hydrogen gas at low pressure. The gasometer includes: a first bag-shaped membrane delimiting a hydrogen storage chamber; a second membrane partially delimiting a pressurization chamber superimposed, at least in part, on the storage chamber; a third membrane, placed resting on top of the first membrane, fixed in an impermeable manner at least to the second membrane, defining, with the first membrane, a cavity open towards the outside of the gasometer; hydrogen supply and discharge unit associated with the storage chamber; pressurization unit; mechanical anchor to a base surface of the first, second and third membranes; and a natural passive ventilation system to vent any hydrogen losses to the outside, including a duct adapted to connect cavity to the outside environment passing through the pressurization chamber.

An aseptic liquid cryogen dosing head has a liquid cryogen reservoir in communication with a dosing outlet. An electromagnetic actuator is attached to an upper end of a dosing valve stem and is operable to move the dosing valve stem to open and close the dosing outlet. An air-tight seal extends about the dosing valve stem and separates the liquid cryogen reservoir from a cavity between the seal and the electromagnetic actuator. A controller is operable to perform a head leakage test, including pressurizing the cavity with a pressure higher than a pressure within the reservoir, to check for leakage past the seal; and pressurizing the reservoir to check for leakage from the liquid cryogen reservoir.

An aeronautical cryogenic tank device for storing gas, having a spherical or annular shape about an axis, comprising an inner container (26) defining a liquefied gas storage chamber (28), an outer envelope (27) containing the inner container (26), an insulation chamber (29) defined between the inner container (26) and the outer envelope (27), the reduced-pressure insulation chamber (29) having scaling equal to or better than 10-9 millibar*litre/second, a removable collector (38) passing through the outer envelope (27) and the inner container (26) in a sealed manner, the collector (38) extending over a diameter or a diagonal of the inner container (26) and having a free end close to a bottom of the inner container (26), and a conduit supplied by the collector (38).

An acronautical gas storage cryogenic tank device, comprising an inner container (26) defining a liquefied gas storage chamber (28), an outer envelope (27) containing the inner container (26) and made of a plurality of demountable parts for accessing the inner container (26), the outer envelope (27) being made of a material resistant to temperatures from less than 60 C. to at least +80 C. an insulation chamber (29) defined between the inner container (26) and the outer envelope (27), the reduced-pressure insulation chamber (29) having helium-tightness equal to or better than 10*9) millibar*litre/second defined between the inner container (26) and the outer envelope (27), two connections of which at least one is a sliding connection, supporting the inner container (26) and borne by the outer envelope (27), a removable collector (42) passing through the outer envelope (27) and the inner container (26) in a sealed manner, and a flexible thermally insulating neck (42) forming a sealed interface between the collector on the one hand and, on the other hand, the outer envelope (27) and the inner container (26), the neck (42) being formed around a portion of the collector (38), the neck (42) passing through the insulation chamber (29) in order to allow the collector (38) to be demounted independently of the pressure in the insulation chamber (29).

Various embodiments of the present technology relate to solutions for leak detection in hydrocarbon storage environments. In some examples, a leak identification system confirms sensor outputs in a hydrocarbon storage environment. The leak identification system comprises processing circuitry. The processing circuitry obtains sensor data that characterizes hydrocarbon inputs and hydrocarbon outputs in the hydrocarbon storage environment. The processing circuitry processes the sensor data using a thermodynamic model to determine when a discrepancy exists between the hydrocarbon inputs and the hydrocarbon outputs. The processing circuitry generates feature vectors that represent video data that depicts the hydrocarbon storage environment. The processing circuitry provides the feature vectors as input to a machine learning engine trained to detect hydrocarbon leaks in the hydrocarbon storage environment. The processing circuitry receives a machine learning output that indicates when a hydrocarbon leak exists in the hydrocarbon storage environment.

A storage tank containing a fluid, the liquefaction temperature of which is lower than 50 C. under atmospheric pressure and having a cylindrical shape around an axis of revolution, the storage tank includes at least one thermal insulation barrier covered with a sealed and corrugated membrane which is made of a plurality of corrugations. These corrugations delimit a space between the corrugations and at least one thermal insulation barrier. The storage tank includes at least one system injecting gas into the space, the gas injection system including at least one circular pipe spreading around the axis of revolution of the storage tank and a nozzle linked to the circular pipe.

A module between a dihydrogen tank and an engine in an aircraft. The module comprises outer and inner boxes, a pipeline between the tank and the engine through the boxes, pressure limiters mounted on the pipeline and the inner box, an exhaust pipeline between the pressure limiters and the outside, shut-off valves mounted on the pipeline at the outer box, a detector for detecting a leak of the pipeline or of the outer box and a controller configured to control each shut-off valve as a function of the information delivered by the detector.

Leakage detection for pressurized fuel tanks. To provide facilitated leakage detection, a leakage detection device for pressurized fuel tanks for storing a pressurized fuel includes a fuel-sensing tracer and a light-wave conducting component. The fuel sensing tracer is configured to alter its optical properties in the presence of a predetermined fuel. The light-wave conducting component is in optical contact with the fuel sensing tracer. Light travelling within the light-wave conducting component is modifiable by altered optical properties of the fuel sensing tracer such that modified light is indicative of the presence of fuel at the location of the fuel sensing tracer.

A method of controlling a pressure in a hydrogen fuel tank of an aircraft hydrogen fuel system. The hydrogen fuel tank stores hydrogen fuel. The method comprises receiving leak information indicative of a leak of hydrogen fuel from the hydrogen fuel system. The method also comprises, based on the leak information received, causing control of the pressure in the hydrogen fuel tank.