Abstract: A fluid sealing device for sealing an opening of an installation pipe in which at least a long object is installed includes: a flange configured to close the opening of the installation pipe, the flange having a hole through which the long object is made to pass, and the flange having a stop face that is continuous with and at an angle to an inner surface of the hole; one or more sealing members configured to be disposed on an outer periphery of the long object and configured to exert an urging force toward an axial center of the long object upon being compressed in an axial direction of the long object, thereby sealing a gap between the flange and the long object; and a clamping member configured to press the one or more sealing members toward the stop face.

Abstract: A fluid sealing device for sealing an opening of an installation pipe in which at least a long object is installed includes: a flange configured to close the opening of the installation pipe, the flange having a hole through which the long object is made to pass, and the flange having a stop face that is continuous with and at an angle to an inner surface of the hole; one or more sealing members configured to be disposed on an outer periphery of the long object and configured to exert an urging force toward an axial center of the long object upon being compressed in an axial direction of the long object, thereby sealing a gap between the flange and the long object; and a clamping member configured to press the one or more sealing members toward the stop face.

Abstract: A pipe type solid insulation cable system includes a plurality of solid insulation cables; a plurality of steel pipes in which the plurality of solid insulation cables are inserted, respectively; and a refrigerant circulation path that includes a plurality of refrigerant pipes, which are provided to be adjacent to the plurality of steel pipes, respectively, circularly connected with each other to circulate a refrigerant therein, wherein the pipe type solid insulation cable system is configured to indirectly cool the plurality of solid insulation cables in the plurality of steel pipes, respectively, by cooling at least a part of a periphery of each of the plurality of steel pipes by the refrigerant circulation path without flowing the refrigerant in the plurality of steel pipes.

Abstract: A pipe type solid insulation cable system includes a plurality of solid insulation cables; a plurality of steel pipes in which the plurality of solid insulation cables are inserted, respectively; and a refrigerant circulation path that includes a plurality of refrigerant pipes, which are provided to be adjacent to the plurality of steel pipes, respectively, circularly connected with each other to circulate a refrigerant therein, wherein the pipe type solid insulation cable system is configured to indirectly cool the plurality of solid insulation cables in the plurality of steel pipes, respectively, by cooling at least a part of a periphery of each of the plurality of steel pipes by the refrigerant circulation path without flowing the refrigerant in the plurality of steel pipes.

Abstract: A power cable includes a steel pipe coupled to a reference potential node, three transmission cables within the steel pipe and respectively including a conductor to transmit three-phase alternating current power, and a return cable within the steel pipe and coupled to the reference potential node. Each of the three transmission cables includes a first insulating layer covering the conductor, a metal layer covering the first insulating layer, and a second insulating layer covering the metal layer. The three transmission cables are twisted around a periphery of the return cable along a longitudinal direction of the return cable, and the metal layer is coupled to the reference potential node.

Abstract: A power cable includes a steel pipe coupled to a reference potential node, three transmission cables within the steel pipe and respectively including a conductor to transmit three-phase alternating current power, and a return cable within the steel pipe and coupled to the reference potential node. Each of the three transmission cables includes a first insulating layer covering the conductor, a metal layer covering the first insulating layer, and a second insulating layer covering the metal layer. The three transmission cables are twisted around a periphery of the return cable along a longitudinal direction of the return cable, and the metal layer is coupled to the reference potential node.

Abstract: A power cable includes a steel pipe coupled to a reference potential node, three transmission cables within the steel pipe and respectively including a conductor to transmit three-phase alternating current power, and a return cable within the steel pipe and coupled to the reference potential node. Each of the three transmission cables includes a first insulating layer covering the conductor, a metal layer covering the first insulating layer, and a second insulating layer covering the metal layer. The three transmission cables are twisted around a periphery of the return cable along a longitudinal direction of the return cable, and the metal layer is coupled to the reference potential node.