A doser for dispensing a cryogenic fluid includes a doser body configured to receive the cryogenic fluid. A dosing arm has a proximal end and a distal end, with a central passage extending between the proximal and distal ends and configured to receive cryogenic fluid from the doser body. Multiple dosing heads are mounted to the distal end of the dosing arm with each of the dosing heads including a dosing valve. The dosing heads are configured to receive cryogenic fluid from the central passage of the dosing arm and to dispense the cryogenic fluid when the dosing valve is opened.

A liquefied fuel cryogenic tank has an inner jacket delimiting a fluid storage volume and an outer jacket disposed around the inner jacket with a vacuum thermal insulation gap therebetween. A withdrawal circuit has an assembly of one or more valves and a withdrawal line that has a first heating heat exchanger located outside the inner jacket and a second heating heat exchanger located inside the inner jacket. Fluid flows through the withdrawal line via the first heat exchanger and then the second heat exchanger or via the first heat exchanger without entering the second heat exchanger.

A system for cryogenic gas delivery includes a cryogenic tank configured to contain a cryogenic liquid and a gas within a headspace above the cryogenic liquid. The system also includes first and second vaporizers and a use outlet. A first pipe is configured to transfer gas from the headspace through the first vaporizer to the use outlet. A second pipe is configured to transfer liquid from the tank through the first vaporizer so that a first vapor stream is directed to the use outlet. A third pipe is configured to build pressure within the tank by transferring liquid from the tank through the second vaporizer so that a second vapor stream is directed back to the headspace of the tank. A first regulator valve is in fluid communication with the second pipe and opens when a pressure on an outlet side of the first regulator drops below a first predetermined pressure level. A second regulator valve is in fluid communication with the third pipe and opens when a pressure inside the tank drops below a second predetermined pressure level. The first predetermined pressure level is higher than the second predetermined pressure level.

A vaporizer apparatus for vaporizing liquefied natural gas (LNG) into vapor-phase natural gas for injection into an oil or gas well, comprises a blower assembly, a burner section, a heat exchanger section, and at least one flammable gas concentration sensor. The blower assembly comprises a primary blower configured to move air along an air flow path through the vaporizer apparatus and a flame arrestor configured to allow passage of the air into the vaporizer apparatus and impede passage of a flame out of the vaporizer apparatus. The burner section comprises an enclosure having an upstream end coupled to the blower assembly and a downstream end, and a burner inside the enclosure and in the air flow path for heating the air. The heat exchanger section comprises an enclosure having an upstream end coupled to the downstream end of the burner section enclosure and a downstream end, and at least one LNG heat exchange tube inside the enclosure and in the air flow path, and thermally communicable with the air heated by the burner. The at least one flammable gas concentration sensor is in the air flow path upstream of the burner and is configured to detect whether a concentration of a flammable gas in the air is above a flammable gas concentration set point.

For improving storage of hydrogen in a vehicle, a hydrogen tank assembly is provided for a vehicle. The hydrogen tank assembly includes an inner tank wall defining a hydrogen tank volume configured for storing liquid hydrogen; and an outer hydrogen collector defining, together with the inner tank wall, at least one cavity outside of the hydrogen tank volume and including at least one hydrogen outlet for leading gaseous hydrogen which leaks from the hydrogen tank through the inner tank wall into the at least one cavity to a hydrogen storage or a hydrogen consumer.

An air reservoir system is provided that includes a switchable valve to direct input air to an air reservoir, or stored air in the air reservoir to a firing pathway. Various example embodiments of the present general inventive concept may also include an air-saver system to maintain a minimum air pressure in the air reservoir during a firing operation.

A tap (1) is disclosed for delivering liquids, particularly for delivering high- and medium-density liquids from rigid vessels, comprising: a body (3); stem means (9); and elastic actuating means (11) of the stem means (9); air inlet/outlet means (13, 25, 28) in the body (3) and inside the vessel; valve means (7) for passing air; non-return valve means (26) placed between the air inlet and outlet means (13, 25, 28) and the vessel interior and adapted to be guided and driven by the pressure difference between outside the tap (1) and inside the vessel; anti-counterfeiting and protecting means (A); supporting means (E); and an integrated glass (D).

A valve assembly comprising a housing and a valve, the valve being disposed within the housing, a first indexed member integral to the housing, the first indexed member adapted to be complementary to a second indexed member, and a radio frequency identification device adapted to communicate with a radio frequency receiver, the valve being configured to align with a canister, seal the canister and open in a single movement. A drug containment device having said valve assembly is also disclosed.

The invention relates to a device (1) for determining a filling level of a liquid (F) in a container (B), comprising a submersible unit (2) having a pressure sensor unit (3) and a transmitter unit (14) configured as a radio transmitter unit, an ultrasonic transmitter unit or a light signal transmitter unit, and a float unit (5) having a further pressure sensor unit (6) and a further transmitter unit (15) configured as a radio transmitter unit, wherein the further pressure sensor unit (6) is arranged at or in a floating body (7) of the float unit (5) in such a manner that, if the float unit (5) is arranged in the liquid (F) for which the device (1) is intended to determine the filling level, the further pressure sensor unit (6) is arranged below the surface (O) of the liquid (F).

A compressed gas energy storage system may include an accumulator for containing a layer of compressed gas atop a layer of liquid. A gas conduit may have an upper end in communication with a gas compressor/expander subsystem and a lower end in communication with accumulator interior for conveying compressed gas into the compressed gas layer of the accumulator when in use. A shaft may have an interior for containing a quantity of a liquid and may be fluidly connectable to a liquid source/sink via a liquid supply conduit. A partition may cover may separate the accumulator interior from the shaft interior. An internal accumulator force may act on the inner surface of the partition and the liquid within the shaft may exert an external counter force on the outer surface of the partition, whereby a net force acting on the partition is less than the accumulator force.