Abstract: A joint structure connecting a first and second double pipe, includes a male bayonet at an end portion of one of the pipes, the male bayonet including a first flange; a female bayonet at an end portion of the other of the pipes, the female bayonet including a second flange fastened to the first; a first positioning member mounted on the first double pipe; a second positioning member mounted on the second double pipe, the second positioning member being positioned with respect to the first so that a center axis of the male bayonet and the female bayonet conform to each other; and a slide mechanism which supports the first positioning member so the first positioning member is slidable in an axial direction of the first double pipe or supports the second positioning member so the second positioning member is slidable in an axial direction of the second double pipe.

Abstract: Each of a pair of couplers includes: a vacuum double-pipe structure main part; a valve seat forming an opening through which a fluid flows; and a valve body in the main part. The valve body is configured such that, when separating the couplers, in each coupler, the body is brought into contact with the seat by a spring to close the opening, and when coupling the couplers, the body of each coupler is pressed by the body of the other coupler to move away from the seat and open the opening. The valve body includes: a holding member holding a sealing material sealing between the body and the seat when the body is in contact with the seat; a resin block covering a distal end surface of the holding member; and a metal operating member accommodating the block and protruding from the holding member to pass through the opening.

Abstract: An emergency release system includes a first shut-off valve unit which is land-based; and a second shut-off valve unit which is provided for a marine vessel and separably connected to the first shut-off valve unit, and the first shut-off valve unit is provided with a reservoir container which receives liquid air generated in the first shut-off valve unit and dropped, in a state in which the second shut-off valve unit is separated from the first shut-off valve unit, and the system includes a container support mechanism which is capable of retaining the reservoir container at a retracted position in a state in which the first and second shut-off valve units are connected to each other, the container support mechanism being configured to automatically shift the reservoir container to a reserving position, in a state in which the first and second shut-off valve units are separated from each other.

Abstract: An object is to propose a fluid handling device for liquid hydrogen that prevents evaporation of liquid hydrogen, and moreover affords excellent heat insulation without liquefying oxygen in the vicinity.

Abstract: A liquefied hydrogen transport method includes connecting first and second loading arms to the manifold while vacuum insulation double tubes of the first and second loading arms are filled with hydrogen gas and air is mixed in piggyback lines; supplying an inactive gas to one of the piggyback lines of the first and second loading arms and taking in a gas mixture of an inactive gas and air from the other of the piggyback lines of the first and second loading arms; supplying hydrogen gas to one of the piggyback lines of the first and second loading arms and taking in a gas mixture of hydrogen gas and an inactive gas from the other of the piggyback lines of the first and second lading arms; and transporting liquefied hydrogen through any one of the vacuum insulation double tubes of the first and second loading arms.

Abstract: A joint structure connecting a first and second double pipe, includes a male bayonet at an end portion of one of the pipes, the male bayonet including a first flange; a female bayonet at an end portion of the other of the pipes, the female bayonet including a second flange fastened to the first; a first positioning member mounted on the first double pipe; a second positioning member mounted on the second double pipe, the second positioning member being positioned with respect to the first so that a center axis of the male bayonet and the female bayonet conform to each other; and a slide mechanism which supports the first positioning member so the first positioning member is slidable in an axial direction of the first double pipe or supports the second positioning member so the second positioning member is slidable in an axial direction of the second double pipe.

Abstract: A liquefied hydrogen loading arm configured to transport liquefied hydrogen includes: a support frame structure including a base riser erected on a ground, an inboard boom, an outboard boom, and a counterweight; a flexible vacuum insulation double tube including a flexible metal inner tube, a flexible metal outer tube fitted on the inner tube, and a vacuum layer, the vacuum insulation double tube being disposed in an upward curved shape in a space below the support frame structure; a vacuum insulation double connecting tube connected to a distal end portion of the vacuum insulation double tube and connected to a distal end portion of the outboard boom; and a midway portion support mechanism configured to support a lengthwise midway portion of the vacuum insulation double tube on the support frame structure through a hard curved member curved upward in a convex shape.

Abstract: An object is to provide an emergency detachment device of a fluid handling device, the emergency detachment device having exceptional heat insulation performance and making it possible to handle extremely-low-temperature fluids such as liquid hydrogen. A first coupler 2 and a second coupler 3 are provided with a vacuum section 10 between an inner pipe section 5 and an outer pipe section 6, and are provided with two valves 1 in series. A remaining-fluid-transferring mechanism is provided such that, after second valves 1B provided further inward enter a closed-valve state during emergency detachment, residual fluid that remains closer to the first valves 1A than the second valves 1B is transferred into the inner pipes sections 5 provided further inward of the second valves 1B.

Abstract: A low temperature fluid dual structure pipe includes: an inner pipe through which a low temperature fluid flows; and an outer pipe externally fitted to the inner pipe with a sealed tubular space therebetween. An inactive gas having a melting point and a boiling point each of which is equal to or higher than a temperature of the low temperature fluid is filled in the tubular space between the inner pipe and the outer pipe. When the low temperature fluid flows through the inner pipe, the inactive gas is liquefied or solidified, and therefore, at least one of a liquefied inactive gas layer and a solidified inactive gas layer is formed on an outer peripheral surface of the inner pipe. As a result, a pseudo vacuum layer that is in a substantially vacuum state is formed in the tubular space.

Abstract: An object is to provide an emergency detachment device of a fluid handling device, the emergency detachment device having exceptional heat insulation performance and making it possible to handle extremely-low-temperature fluids such as liquid hydrogen. A first coupler 2 and a second coupler 3 are provided with a vacuum section 10 between an inner pipe section 5 and an outer pipe section 6, and are provided with two valves 1 in series. A remaining-fluid-transferring mechanism is provided such that, after second valves 1B provided further inward enter a closed-valve state during emergency detachment, residual fluid that remains closer to the first valves 1A than the second valves 1B is transferred into the inner pipes sections 5 provided further inward of the second valves 1B.

Abstract: A liquefied hydrogen loading arm configured to transport liquefied hydrogen includes: a support frame structure including a base riser erected on a ground, an inboard boom, an outboard boom, and a counterweight; a flexible vacuum insulation double tube including a flexible metal inner tube, a flexible metal outer tube fitted on the inner tube, and a vacuum layer, the vacuum insulation double tube being disposed in an upward curved shape in a space below the support frame structure; a vacuum insulation double connecting tube connected to a distal end portion of the vacuum insulation double tube and connected to a distal end portion of the outboard boom; and a midway portion support mechanism configured to support a lengthwise midway portion of the vacuum insulation double tube on the support frame structure through a hard curved member curved upward in a convex shape.

Abstract: A liquefied hydrogen transport method includes connecting first and second loading arms to the manifold while vacuum insulation double tubes of the first and second loading arms are filled with hydrogen gas and air is mixed in piggyback lines; supplying an inactive gas to one of the piggyback lines of the first and second loading arms and taking in a gas mixture of an inactive gas and air from the other of the piggyback lines of the first and second loading arms; supplying hydrogen gas to one of the piggyback lines of the first and second loading arms and taking in a gas mixture of hydrogen gas and an inactive gas from the other of the piggyback lines of the first and second lading arms; and transporting liquefied hydrogen through any one of the vacuum insulation double tubes of the first and second loading arms.

Abstract: An emergency release system includes a first shut-off valve unit which is land-based; and a second shut-off valve unit which is provided for a marine vessel and separably connected to the first shut-off valve unit, and the first shut-off valve unit is provided with a reservoir container which receives liquid air generated in the first shut-off valve unit and dropped, in a state in which the second shut-off valve unit is separated from the first shut-off valve unit, and the system includes. a container support mechanism which is capable of retaining the reservoir container at a retracted position in a state in which the first and second shut-off valve units are connected to each other, the container support mechanism being configured to automatically shift the reservoir container to a reserving position, in a state in which the first and second shut-off valve units are separated from each other.

Abstract: An object is to propose a fluid handling device for liquid hydrogen that prevents evaporation of liquid hydrogen, and moreover affords excellent heat insulation without liquefying oxygen in the vicinity.

Abstract: A low temperature fluid dual structure pipe includes: an inner pipe through which a low temperature fluid flows; and an outer pipe externally fitted to the inner pipe with a sealed tubular space therebetween. An inactive gas having a melting point and a boiling point each of which is equal to or higher than a temperature of the low temperature fluid is filled in the tubular space between the inner pipe and the outer pipe. When the low temperature fluid flows through the inner pipe, the inactive gas is liquefied or solidified, and therefore, at least one of a liquefied inactive gas layer and a solidified inactive gas layer is formed on an outer peripheral surface of the inner pipe. As a result, a pseudo vacuum layer that is in a substantially vacuum state is formed in the tubular space.