The invention relates to a device for supplying pressurized cryogenic fluid having a thermally insulated container consisting of an inner tank for cryogenic liquid to be pumped, for example hydrogen, and an outer tank delimiting a sealed volume about the inner tank, the inner tank and the outer tank extending vertically and being closed at the top end thereof by a set of covers, the device having a pumping system mounted on the set of covers and having a lower end seated in the inner tank to pump the cryogenic liquid therein, the device also having a cryogenic liquid feed circuit to supply the inner tank and a delivery circuit to transfer the cryogenic liquid pumped by the pumping system out of the inner tank, the pumping system having at least one piston pump actuated by an actuator, preferably a linear actuator.

A fluid storage and pressurizing assembly includes a storage receptacle and a pump assembly. The storage receptacle includes an inner vessel defining a cryogen space for storing a fluid at a storage pressure and a cryogenic temperature, an outer vessel surrounding the inner vessel, and an insulated space between the inner vessel and the outer vessel, and a pump assembly. The pump assembly includes a pump having an inlet disposed within the cryogen space for receiving a quantity of the fluid from the cryogen space, and an outlet for delivering the fluid therefrom, and a pump drive unit for driving the pump, the pump drive unit being at least partially disposed within a space defined by the storage receptacle

A cryogenic fluid system includes a vessel and a pumping system positioned for submerging within cryogenic fluid within the vessel. The pumping system includes an electric drive structured to move a pumping element within a pumping chamber to pump cryogenic fluid out of the vessel. A cooling jacket forms a heat exchange cavity about the electric drive such that heat is rejected externally of the storage vessel.

A cryogenic fluid system such as a cryogenic fuel system for an engine includes a storage vessel, and a pumping mechanism with a pump positioned inside the storage vessel to be submerged in fluid stored therein. The system further includes a reciprocable pumping element operated by way of a drive mechanism including a rotatable driving element and a magnetic coupling operably between the rotatable driving element and the reciprocable pumping element.

A submersible pumping system in a machine system includes a pumping element, and a drive mechanism for actuating the pumping element. The drive mechanism has an electromagnetic element with a superconducting state at or below a critical temperature. A temperature control jacket and cooling mechanism are provided to pump heat from a heat exchange cavity to cool the drive mechanism to or below a critical temperature less than an ambient temperature in a cryogenic environment.

An above-ground low-temperature tank includes a metal inner tank which stores low-temperature liquefied gas, and an outer tank which includes a concrete outer wall surrounding the inner tank. A hole portion which has a preset depth from a bottom surface of the inner tank is formed on a bottom portion of the inner tank, and a metal pit main body having a cylindrical bottomed accommodating portion is provided in a state where the accommodating portion is accommodated in the hole portion. A reinforcing body which supports at least an outer circumferential edge portion of a bottom surface of the pit main body is provided on the bottom surface side of the pit main body in the hole portion. A cold insulation material is provided below the reinforcing body.

A portable gas filling system for transfer of cryogenic fluids to high pressure gas cylinders includes a moveable platform, a cryogenic fluid pump for connection to an off platform cryogenic fluid Dewar, and a vaporizer for connection between the fluid pump and gas cylinders. A vacuum pump is provided for purging of interconnecting system lines and a gas accumulator interconnected to the system lines enables storage of gas to pressurize the Dewar.

A system and method for supplying a backup product in an air separation device, as well as a system and method for supplying a lower-pressure product to a user by means of pressurization of a cryogenic liquid pump during normal operation of an air separation device, i.e., when the cryogenic liquid pump is in the cold standby state. By means of the system and method, a cryogenic liquid product taken from a storage tank is pressurized by the cryogenic liquid pump to produce a lower-pressure product by taking full advantage of the low-speed operation of the cryogenic liquid pump in the cold standby state, and the lower-pressure product is transmitted to product supply lines of a user, to achieve the function of supplying the lower-pressure product to the user. The system and method not only reduce the energy loss of the cryogenic liquid pump in the cold standby state for a long time, but also avoid the bleeding rate of the cryogenic liquid product generated by sending a part of the cryogenic liquid product back to the storage tank, so that the advantage of quickly starting the cryogenic liquid pump from the cold standby state is ensured, and the requirements of the user to the higher-pressure product and the lower-pressure product can be satisfied.

Disclosed techniques include energy transfer using high-pressure vessels. Liquid is pumped into a high-pressure vessel to pressurize a gas. The gas can include air. Liquid is sprayed into the high-pressure vessel to cool the gas. Heat exchange is performed to cool the liquid before spraying the liquid into the high-pressure vessel. The spraying liquid into the top and the bottom of the high-pressure vessel is accomplished using nozzles in a top portion and nozzles in a bottom portion of the high-pressure vessel. The pressurized gas is transferred into a storage reservoir. The storage reservoir can include an underground cavern or aquifer. Gas from the storage reservoir is delivered to drive a turbine to recover stored energy. The extracting gas from the storage reservoir is accomplished using an additional high-pressure vessel. Heat exchange is performed to warm the liquid before spraying the liquid into the additional high-pressure vessel.

A system and a method for liquefied fuel storage are provided. The system includes a first module including a first outer vessel wall and a cryotank, a second module including a second outer vessel wall and a submerged pump at partially inside the second outer vessel wall, and a third module including a third outer vessel wall. The first, the second, and the third outer vessel walls are connected to provide an enclosure as an outer vessel.