Abstract: 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.

Abstract: 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.

Abstract: A thermal insulating structure includes: at least two first multilayer vacuum insulators that adjoin each other and that cover a to-be-insulated surface; a retainer that is fixed to the to-be-insulated surface and that protrudes from a boundary between the first multilayer vacuum insulators; a second multilayer vacuum insulator that extends along the boundary and that covers the boundary, the second multilayer vacuum insulator including a through-hole formed therein, in which the retainer is inserted; and a keep plate that is fixed to the retainer and that holds the second multilayer vacuum insulator and the first multilayer vacuum insulators.

Abstract: A liquefied gas storage tank includes: an inner shell storing a liquefied gas; an outer shell forming a vacuum space between the inner shell and the outer shell; and a fail-safe thermal insulating layer covering an outer side surface of the outer shell. According to this configuration, the fail-safe thermal insulating layer is not disposed in the vacuum space. This makes it possible to suppress the degradation over time of the degree of vacuum in the vacuum space.

Abstract: A horizontal type cylindrical double-shell tank includes an inner shell and an outer shell. The inner shell includes an inner shell main part storing a liquefied gas and an inner shell dome protruding from the inner shell main part. The outer shell forms a vacuum space between the inner shell and the outer shell, and includes an outer shell main part surrounding the inner shell main part and an outer shell dome surrounding the inner shell dome. The inner shell dome is provided with an inner shell manhole. The outer shell dome is provided with an outer shell manhole at a position corresponding to a position of the inner shell manhole.

Abstract: A thermal insulating structure includes: at least two first multilayer vacuum insulators that adjoin each other and that cover a to-be-insulated surface; a retainer that is fixed to the to-be-insulated surface and that protrudes from a boundary between the first multilayer vacuum insulators; a second multilayer vacuum insulator that extends along the boundary and that covers the boundary, the second multilayer vacuum insulator including a through-hole formed therein, in which the retainer is inserted; and a keep plate that is fixed to the retainer and that holds the second multilayer vacuum insulator and the first multilayer vacuum insulators.

Abstract: A railcar includes: an underframe including a pair of side sills located at both respective ends of the underframe in a car width direction and extending in a car longitudinal direction and a plurality of cross beams coupling the pair of side sills to each other in a car width direction; and an underfloor cover covering an underfloor portion of the underframe. The underfloor cover includes upper and lower plate-shaped members (a shielding plate and a closing plate) made of stainless steel, and the upper and lower plate-shaped members are at least partially spaced apart from each other.

Abstract: A structure of a horizontal type cylindrical double-shell tank mounted on a ship includes: an inner shell storing liquefied gas; and an outer shell forming a vacuum space between the inner shell and the outer shell. A pair of support units supporting the inner shell is disposed between the inner shell and the outer shell. Each support unit includes: a plurality of cylindrical elements arranged in a circumferential direction of the tank such that an axial direction of each of the cylindrical elements coincides with a radial direction of the tank; a plurality of inner members each holding an end portion of a corresponding one of the cylindrical elements at the inner shell side; and a plurality of outer members each holding an end portion of a corresponding one of the cylindrical elements at the outer shell side. Each of the cylindrical elements is made of glass fiber reinforced plastic.

Abstract: A support structure of a ship tank includes: a curved surface facing an outer peripheral surface of a horizontal type cylindrical tank; and a pair of support units supporting the tank on the curved surface. Each of the support units includes: a plurality of cylindrical elements arranged in a circumferential direction of the tank such that an axial direction of each of the cylindrical elements coincides with a radial direction of the tank; a plurality of inner members each holding an end portion of a corresponding one of the cylindrical elements at the tank side; and a plurality of outer members each holding an end portion of a corresponding one of the cylindrical elements at an opposite side to the tank. The inner members are fixed to the tank. The outer members of one of the support units are configured such that displacement of the outer members in an axial direction of the tank relative to the curved surface is restricted.

Abstract: A liquefied gas storage tank includes: an inner shell storing a liquefied gas; an outer shell forming a vacuum space between the inner shell and the outer shell; and a fail-safe thermal insulating layer covering an outer side surface of the outer shell. According to this configuration, the fail-safe thermal insulating layer is not disposed in the vacuum space. This makes it possible to suppress the degradation over time of the degree of vacuum in the vacuum space.

Abstract: A railroad vehicle where an air conditioner can be installed in an upper part of a roof thereof includes a roof structure having an opening, and a low roof main body having a recessed part provided in the opening, and recessed in a cross section, the air conditioner being able to be placed on the recessed part, and an edge part of the low roof main body which is continuously formed from the low roof main body and joined to the roof structure. The low roof main body and the edge part of the low roof main body are made of plastic.

Abstract: A railcar includes: an underframe including a pair of side sills located at both respective ends of the underframe in a car width direction and extending in a car longitudinal direction and a plurality of cross beams coupling the pair of side sills to each other in a car width direction; and an underfloor cover covering an underfloor portion of the underframe. The underfloor cover includes upper and lower plate-shaped members (a shielding plate and a closing plate) made of stainless steel, and the upper and lower plate-shaped members are at least partially spaced apart from each other.

Abstract: A horizontal type cylindrical double-shell tank includes an inner shell and an outer shell. The inner shell includes an inner shell main part storing a liquefied gas and an inner shell dome protruding from the inner shell main part. The outer shell forms a vacuum space between the inner shell and the outer shell, and includes an outer shell main part surrounding the inner shell main part and an outer shell dome surrounding the inner shell dome. The inner shell dome is provided with an inner shell manhole. The outer shell dome is provided with an outer shell manhole at a position corresponding to a position of the inner shell manhole.

Abstract: A structure of a horizontal type cylindrical double-shell tank mounted on a ship includes: an inner shell storing liquefied gas; and an outer shell forming a vacuum space between the inner shell and the outer shell. A pair of support units supporting the inner shell is disposed between the inner shell and the outer shell. Each support unit includes: a plurality of cylindrical elements arranged in a circumferential direction of the tank such that an axial direction of each of the cylindrical elements coincides with a radial direction of the tank; a plurality of inner members each holding an end portion of a corresponding one of the cylindrical elements at the inner shell side; and a plurality of outer members each holding an end portion of a corresponding one of the cylindrical elements at the outer shell side. Each of the cylindrical elements is made of glass fiber reinforced plastic.

Abstract: A support structure of a ship tank includes: a curved surface facing an outer peripheral surface of a horizontal type cylindrical tank; and a pair of support units supporting the tank on the curved surface. Each of the support units includes: a plurality of cylindrical elements arranged in a circumferential direction of the tank such that an axial direction of each of the cylindrical elements coincides with a radial direction of the tank; a plurality of inner members each holding an end portion of a corresponding one of the cylindrical elements at the tank side; and a plurality of outer members each holding an end portion of a corresponding one of the cylindrical elements at an opposite side to the tank. The inner members are fixed to the tank. The outer members of one of the support units are configured such that displacement of the outer members in an axial direction of the tank relative to the curved surface is restricted.

Abstract: A railcar includes a heat-resistant floor, and the heat-resistant floor includes a floor panel, a heat absorbing layer provided under the floor panel and configured to absorb heat, and a supporting plate configured to support the heat absorbing layer from below. The supporting plate includes contacting portions each configured to contact the heat absorbing layer and separated portions each continuously formed from the contacting portion in a railcar width direction, separated downward from the heat absorbing layer, and extending in a railcar longitudinal direction.

Abstract: Provided is a floor structure of a railcar in which thickness of a heat insulating material can be reduced while having predetermined heat resistance. The floor structure of the railcar includes a underframe having a pair of side sills extending in a railcar longitudinal direction and a cross beam arranged between the side sills and extending in a railcar width direction, a structural floor provided on an upper surface of the underframe, and a first heat insulating material arranged on a lower side of the structural floor via an air layer for the structural floor.

Abstract: An underframe structure of a railcar capable of reducing a deformation amount of a cross beam supporting an underfloor equipment upon underfloor fire. The underframe structure of the railcar includes an underframe having a pair of side sills extending in a railcar longitudinal direction and a cross beam arranged between the side sills and extending in a railcar width direction, a structural floor provided on an upper surface of the underframe, and an underfloor equipment suspended down in a center part in the railcar width direction of the cross beam. The underframe structure includes a passenger cabin floor provided on an upper side of the structural floor, the passenger cabin floor forming a lower surface of a passenger cabin S, and floor receiving members supporting the passenger cabin floor and extending in the railcar longitudinal direction between the structural floor and the passenger cabin floor.

Abstract: A railroad vehicle where an air conditioner can be installed in an upper part of a roof thereof includes a roof structure having an opening, and a low roof main body having a recessed part provided in the opening, and recessed in a cross section, the air conditioner being able to be placed on the recessed part, and an edge part of the low roof main body which is continuously formed from the low roof main body and joined to the roof structure. The low roof main body and the edge part of the low roof main body are made of plastic.

Abstract: A hydrophilic filtration membrane having high chemical resistance, high strength, high water permeability and high blocking performance, and being superior in fouling resistance is provided. A hydrophilic filtration membrane containing a hydrophilic polyethersulfone having a contact angle of 65 to 74 degree, a molecular weight of 10,000 to 100,000, and the number of hydroxy groups of 0.6 to 1.4 per 100 polymerization repeating units. The hydrophilic filtration membrane may additionally contain a polyvinylpyrrolidone having a molecular weight of 10,000 to 1,300,000.