A pressure vessel formed by either by: a) mating a first end or closure to a second end or closure or b) mating a first end to an intermediate body member and mating the intermediate body member to a second end; the first end comprising a hollowed thin walled dome (14) having an exterior surface (15a) and an interior surface (15b) and the dome terminating in an edge surface (14a), the dome (14) having an axis Y extending through its geometric center of the exterior surface, the dome supporting at least one thin hollow walled projection (16, 18, 20) having an exterior (19a) and interior surface (19b), the at least one projection extending outwardly from the dome outer surface (15a), and terminating in a top surface (16a, 23).

A compressed air production facility that reduces an extension cost without stopping an operating air compressor in a case of increasing the number of air compressors to cope with an increase in demands for compressed air is provided. A compressed air system supplies compressed air to compressed air consuming devices connected to a compressed air distributions line, the compressed air system including a plurality of air compressor units connected to the compressed air distributions line via respective air tanks. Each of the air compressor units includes: an air compressor main body; an adjustor of pressure setpoint that adjusts a pressure setpoint of an air tank to which the air compressor unit including the adjustor of pressure setpoint is connected; and a controller of air compressor that operates a rotational frequency of the air compressor main body on the basis of the pressure setpoint adjusted by the adjustor of pressure setpoint and a pressure of the air tank. The adjustor of pressure setpoint adjusts the pressure setpoint on the basis of a control variable indicating the rotational frequency of the air compressor main body or the pressure of the air tank.

An apparatus (112, 113) that provides pressurized gas to at least one target location (124), comprising at least one region of adsorptive material that increases an effective storage volume of at least one pressurized gas storage container in selective fluid communication with at least one target location, wherein pressurized gas is stored in the container at a positive pressure of about around 0.5 MPa to 4 MPa. The invention also relates to a method of providing pressurized gas to at least one target location (124) such as a pneumatic system in a vehicle.

A fluid system for a vehicle is provided. The fluid system is configured to couple to a chassis of the vehicle. A frame assembly of the fluid system is configured to couple with the chassis directly or with another component that is coupled, directly or indirectly, with the chassis. A cowling of the fluid system can enclose a fuel pressure vessel and an auxiliary fluid vessel. The auxiliary fluid vessel is configured to be placed in fluid communication with the component powered or operated by the fluid therein.

A system and method for maintaining overpressure in a logging unit or other pressurized space through interruptions is disclosed. A backup air supply comprising tanks mounted to a frame is operatively connected to the ambient environment of the logging unit through a valve assembly which also connects a conventional pressure setup (e.g., pumps and filters from the external environment). The valve assembly comprises two auto valves, a shuttle valve, and a pressure sensor that allow the logging unit to switch from the conventional external air supply to the tanks when the pressure detected from the conventional air supply falls below a predetermined level. The valve assembly is independently housed and may be mounted or detached from the frame housing the backup tanks.

A method for releasing a fluid from a pressure vessel assembly, the method including the steps of providing:a pressure vessel; a piezo electric device; and an electric field generator; arranging the piezo electric device in a sealed relationship with a part of the pressure vessel, thereby providing the pressure vessel assembly, providing a fluid contained within the pressure vessel assembly under pressure, and using the electric field generator to apply an electric field to the piezo electric device, such that the piezo electric device fails, thereby releasing the fluid from the pressure vessel assembly.

A safety apparatus is for containers loaded by gas pressure, in particular the gas side (13) of hydropneumatic devices such as hydraulic accumulators (1). The safety apparatus has a connection device (19) that can be attached to the pressure chamber of the container to form a passage (25) between the gas side (13) of the container and the outside. A structure (27) normally blocks the passage (25) and under the influence of temperature can be transferred into a state that allows a flow path through the passage (25) to be cleared.

A fluid system for a vehicle is provided. The fluid system is configured to couple to a chassis of the vehicle. A frame assembly of the fluid system is configured to couple with the chassis directly or with another component that is coupled, directly or indirectly, with the chassis. A cowling of the fluid system can enclose a fuel pressure vessel and an auxiliary fluid vessel. The auxiliary fluid vessel is configured to be placed in fluid communication with the component powered or operated by the fluid therein.

An apparatus (112, 113) that provides pressurised gas to at least one target location (124), comprising at least one region of adsorptive material that increases an effective storage volume of at least one pressurised gas storage container in selective fluid communication with at least one target location, wherein pressurised gas is stored in the container at a positive pressure of about around 0.5 MPa to 4 MPa. The invention also relates to a method of providing pressurised gas to at least one target location (124) such as a pneumatic system in a vehicle.

An air-storage system includes air-storage units that are in fluid communication with each other, that are in fluid communication with an air-actuated power generating system, that cooperatively enclose the air-actuated power generating system, and that cooperatively define a work area for placement of the air-actuated power generating system. Each of the air-storage units includes at least one air-storage subunit and a plurality of supporting subunits that support the at least one air-storage subunit. The at least one air-storage subunit of each of the air-storage units includes a plurality of first air-storage pipes that are colinearly arranged, that are connected to and in fluid communication with each other, and that are adapted to store pressurized air.