A method of continuously conveying compressed gas to a plurality of vehicles, where the plurality of vehicles includes at least a first vehicle having a higher tank pressure and a second vehicle having a lower tank pressure that are simultaneously seeking compressed gas from the same delivery conduit. The method includes compressing gas using at least one compressor, conveying the compressed gas from the at least one compressor to a backpressure apparatus, conveying a non-bypass fill portion through the backpressure apparatus, diverting a bypass fill portion through a bypass conduit to at least one distributor, conveying the bypass fill portion through the at least one distributor to at least one of the one or more delivery conduits and subsequently to at least the first vehicle, and conveying the non-bypass fill portion through at least one of the one or more the delivery conduits to at least the second vehicle.

Disclosed is a BOG reliquefaction system. The BOG reliquefaction system includes: a compressor compressing BOG; a heat exchanger cooling the BOG compressed by the compressor through heat exchange using BOG not compressed by the compressor as a refrigerant; a pressure reducer disposed downstream of the heat exchanger and reducing a pressure of fluid cooled by the heat exchanger; and a second oil filter disposed downstream of the pressure reducer, wherein the compressor includes at least one oil-lubrication type cylinder and the second oil filter is a cryogenic oil filter.

Device and method for filling pressurized gas tanks, comprising a pressurized gas source, a transfer pipe connected to a tank to be filled, the transfer pipe comprising a set of valve(s) and a compressor, the device comprising a sensor for detecting the presence of oil in the gas flowing in the transfer pipe downstream of the compressor, the device comprising a bypass pipe connected to the transfer pipe downstream of the compressor and comprising a set of at least two valve(s) in series which are configured to enable, in a first configuration, the gas flowing in the transfer pipe to be extracted in the bypass pipe and, in a second configuration, fluid isolation between the bypass pipe and the transfer pipe, wherein the valve assembly of the transfer pipe defines in the second configuration a closed storage space for the gas extracted and enclosed in the bypass pipe, the closed storage space comprising a pressure relief system for the gas extracted and enclosed in the bypass pipe for lowering the pressure of the enclosed gas to a pressure lower than the pressure of the gas flowing in the transfer pipe, the oil presence detection sensor detecting oil in the closed storage space.

An improved filter apparatus for a cryogenic fluid includes a filter and a support. The filter includes a mesh having an internal space and an open end. The support is associated with the mesh for maintaining a volume of the internal space above a predetermined value. In operation cryogenic fluid enters the internal space through the mesh and exits the open end thereof.

A fluid drain system for pressurized fuel systems includes a fluid drain tool that includes: an enclosure including a collection cavity; a fitting configured for removable coupling to a fluid filter drain valve to fluidly couple the fluid drain tool to the fluid filter drain valve; a tube that fluidly couples the fitting to the enclosure, such that fluid collected from the fluid filter drain valve can be transferred through the tube to the collection cavity of the enclosure; and a selectively openable valve having a first end in fluid communication with the collection cavity of the enclosure, and a second end in fluid communication with an atmosphere.

A compressed gas delivery system includes a control system and at least one compressor fluidly connected to the control system for providing a compressed gas to the control system. The system also has a backpressure apparatus that is fluidly connected between the at least one compressor and the control system. The backpressure apparatus conveys a portion of the compressed gas to the control system. The compressed gas delivery system also includes a bypass conduit that is fluidly connected between the at least one compressor and the backpressure apparatus. The bypass conduit conveys a portion of the compressed gas through the flow limiting distributor directly to one or more vehicles during a dispensing operation.

To provide a hydrogen gas supply device with which pressure resistance of a filter that catches sulfur components contained in a hydrogen gas is improved. A hydrogen gas supply device for a hydrogen station includes a compression portion that compresses a hydrogen gas by reciprocating motion of a piston, in which a piston ring containing sulfur components is mounted on the piston, a filter arranged on the downstream side of the compression portion, the filter that catches sulfur components contained in the hydrogen gas, and a first pipe connecting the compression portion and the filter. The filter includes an element portion having activated carbon onto which the sulfur components contained in the hydrogen gas are absorbable, and a steel housing portion that houses the element portion, in which a gas introduction passage that communicates with the first pipe and guides the hydrogen gas to the element portion is formed.

A hydrogen gas supply apparatus according to one aspect of the present invention includes a compressor configured to compress hydrogen gas and supply the hydrogen gas compressed to a pressure accumulator which accumulates the hydrogen gas, an adsorption column disposed between the discharge port of the compressor and the pressure accumulator, and configured to include an adsorbent for adsorbing impurities in the hydrogen gas discharged from the compressor, and a plurality of valves disposed at the gas inlet/outlet port side of the adsorption column, being at a discharge port side of the compressor, and configured to be able to seal the adsorption column, wherein the space in the adsorption column is sealed using the plurality of valves such that the inside of the adsorption column is maintained to have a high pressure by the hydrogen gas compressed in the case where the compressor is stopped.

A screw compressor includes a hollow casing inside which a reservoir for air and oil is realized and on which, in an upper position, a suction group for air from outside the reservoir having at least an air intake valve and at least an air filter; on one lateral end a flow block provided with an oil/air separation device and an oil filter and at least a valve for extracting compressed air are disposed. The casing is provided with an opening on the opposite side with respect to that on which the flow block is provided. The compressor includes a casing closure flange to which a screw compression unit is fixed that when the flange is placed to close the opening causes the insertion into the reservoir of the unit.

A method and apparatus for compressing gases and supplying fuel to a gaseous fuel consuming device, such as a gaseous fueled vehicle or the like. One embodiment includes a gas compressor for compressing the gaseous fuel to an array of tanks having predetermined initial set points which are increasing for tanks in the array. One embodiment provides a selecting valve having first and second families of ports wherein the valve can be operated to select a plurality of ports from the first family to be fluidly connected with a plurality of ports with the second family, and such fluid connections can be changed by operation of the valve.