A liquid container refill management system including a machine learning algorithm and method of training the same, the system and method making use of noninvasive tank-in-tank measuring techniques. The system can comprise of a container fill level indicator. The container fill level indicator can be capable of detecting a vibration response signal on the outer surface of a container, wherein the system is capable of transmitting the response signal to a remote data processor for processing using a trained machine learning algorithm. The trained machine learning algorithm can be trained by the process of selecting model inputs and outputs to define an internal structure of the machine learning algorithm, applying a collection of input and output data samples to train the machine learning algorithm, and verifying the accuracy of the machine learning algorithm by applying input data samples and comparing received output values with expected output values.

A dewar vessel storage apparatus configured to hold at least two dewar vessels containing liquefied gas or cryo-compressed gas, comprising; a box having an outer, thermally insulating, wall; the box comprising a plurality of insulating cavities, each cavity configured to receive a single dewar vessel and is thermally insulated from each other cavity; a thermally insulating closure arrangement configured to close an open end of each cavity; a ventilation assembly comprising at least one conduit within the box configured to provide for venting of gas released from the dewar vessels when stored in the respective cavities of the box, the ventilation assembly configured to provide a gas outlet flow path from each cavity.

The invention relates to a transport container (1) for helium (He), comprising an inner container (6) for receiving the helium (He), a coolant container (14) for receiving a cryogenic liquid (N.sub.2), an outer container (2) in which the inner container (6) and the coolant container (14) are received, and a thermal shield (21) which can be actively cooled with the aid of the cryogenic liquid (N.sub.2), the thermal shield (21) comprising a tubular base section (22) in which the inner container (6) is received, and a cover section (23, 24) that closes the base section (22) at the front and that is arranged between the inner container (6) and the coolant container (14), wherein an intermediate space (20) is provided between the inner container (6) and the coolant.

The invention discloses a liquid oxygen storage tank, which includes an outer tank body, a buffer cavity is provided in the outer tank body, and an insulation tank with an upper end extending outside the buffer cavity is provided in the buffer cavity, and the buffer chamber is provided in the buffer tank. There is a buffer mechanism for reducing the impact force of the tank body. The thermal insulation tank is internally provided with an internal tank body, the internal tank body is provided with a storage cavity, and the upper end of the thermal insulation tank is provided with a control cavity. A driving block is arranged in the cavity. The invention adopts a high-vacuum multi-layer thermal insulation technology to prolong the number of days for holding liquid oxygen, and a heat preservation mechanism makes the storage time of liquid oxygen longer, and it is safer and more convenient to operate. If it is too high, it will start automatically and discharge excess gas to enhance the safety of use. Protect the container from damage. Ordinary personnel can rest assured to use it without the guidance of professionals.

In one aspect the present disclosure relates to a method of manufacturing a cryogenic pressure vessel. The method may include providing a metal lined, composite wrapped vessel which has a boss. The method may further include securing an inlet to the boss, and then encapsulating the metal lined, composite wrapped vessel within a metallic layer in a vacuum controlled environment to form an encapsulated inner tank subassembly. The method may further include securing at least one support to an exterior of the encapsulated inner tank subassembly, and within the controlled vacuum environment, applying a metal coating over the encapsulated inner tank subassembly and the at least one support to form a metal coated, encapsulated inner tank subassembly. The method may further include, within the controlled vacuum environment, encapsulating the metal coated, encapsulated inner tank subassembly within a metallic vacuum jacket, which forms the cryogenic pressure vessel.

A cryogenic storage vessel having an inner vessel defining a cryogen space; an outer vessel spaced apart from and surrounding the inner vessel, defining a thermally insulating space between the inner vessel and the outer vessel; and a receptacle defining passages for delivery of liquefied gas from the cryogen space to outside the cryogenic storage vessel. The receptacle has an elongated outer sleeve defining an interior space in fluid communication with the thermally insulating space that is sealed from the cryogen space; an elongated inner sleeve extending into the interior space defined by the elongated outer sleeve defining an inner receptacle space that is fluidly isolated from the thermally insulating space; and a collar extending around an inner surface of the elongated inner sleeve which seals against a cooperating surface of a pump assembly when a pump assembly is installed in the cryogenic storage vessel thereby dividing a warm end from a cold end of the receptacle. A motor for driving the pump can be installed within the cryogenic storage vessel.

A thermal insulating structure includes: at least two retainers that protrude from a to-be-insulated surface exposed to a vacuum space; at least two first multilayer vacuum insulating sheets adjacent to each other with the retainers positioned therebetween, the insulating sheets covering the to-be-insulated surface; at least one second multilayer vacuum insulating sheet that extends between the retainers along a boundary between the first multilayer vacuum insulating sheets in a manner to cover the boundary; at least two third multilayer vacuum insulating sheets that are adjacent to each other with the retainers positioned therebetween, the at least two third multilayer vacuum insulating sheets covering the first multilayer vacuum insulating sheets and the second multilayer vacuum insulating sheet; and a keep plate that is fixed to the retainers and holds the first multilayer vacuum insulating sheets, the second multilayer vacuum insulating sheet, and the third multilayer vacuum insulating sheets.

A fire engine including a vehicle frame, a liquid nitrogen storage tank, a liquid nitrogen conveying pipeline, a gasification device, a plurality of electric valves, a water pipe adapter, a liquid nitrogen spray gun, and a mixed spray gun. The liquid nitrogen conveying pipeline includes a first pipeline and a second pipeline. The first pipeline connects the lower part of the liquid nitrogen storage tank, the gasification device, and the upper part of the liquid nitrogen storage tank sequentially in that order. The second pipeline connects the liquid nitrogen storage tank, an input end of the liquid nitrogen spray gun, and a first input end of the mixed spray gun. The mixed spray gun includes a first input end, a second input end, a liquid nitrogen nozzle, and a spray pipe. The spray pipe includes a contraction section, an expansion section, and an acceleration section.

The present disclosure provides a storage system comprising a storage tank configured to store fuel at a cryogenic temperature for a predetermined amount of time. The storage tank may have a plurality of layers comprising: a first layer comprising a pressure vessel for containing the fuel at a pressurized state; a second layer comprising insulation for the first layer; a third layer comprising a vapor barrier; and a fourth layer comprising a shell configured to maintain a rigidity of the storage tank.

A tank including interior and exterior skins separated by an intercalated zone and at least one inspection device. The inspection device includes a first orifice configured to establish communication between the interior zone of the tank and the intercalated zone via the interior skin, configured to be blocked by a first plug, a second orifice configured to establish communication between the intercalated zone and the exterior zone of the tank via the exterior skin, configured to be blocked by a second plug, the first and second orifices being aligned in a radial direction, an intercalated pipe connecting the interior and exterior skins, communicating with the first and second orifices and including a bellows configured to be deformed in the radial direction.