Abstract:
PROBLEM TO BE SOLVED: To supply a high voltage insulation system for using in a high discharge electric field at temperatures not higher than the room temperature. SOLUTION: This is related to the high voltage insulation system appropriate for low temperatures, and further related to a coolant which is equipped with an insulator (2) of a solid material based on cellulose fabric (20). The insulator (2) of the solid material is preferably used by a form of cardboard, and saturated by a polymer resin (21). It has a high partial discharge early phase electric field of 77K, and further this coefficient of thermal expansion most appropriately agrees with that of a ceramic high temperature superconductor. The cardboard is capable of forming in a dry condition especially in order to produce a coil bobbin, and alternately jointed together with cotton fiber, and a laminated material of desired thickness is formed.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of diffusing a loss of heat from internal conductors, a high-voltage system, and a high-power circuit breaker. SOLUTION: The high-voltage system includes a supply line (40) and the high power circuit breaker (20), this supply line (40) is provided with the internal conductor (41) extended in a lengthwise direction and an external conductor (42) surrounding this internal conductor, the high power circuit breaker (20) is provided with an internal conductor (21), extending in the lengthwise direction and an external conductor (22) surrounding this internal conductor (21) by the type of housing. The internal conductors (21, 41) and the external conductors (22, 42) are connected, in a manner such as to make electrical conduction with each other. At least one heating pipe (1) is provided for the purpose of diffusing heat energy from the internal conductor (21). The heat pipe (1) interacts with a cooling gas flow (51). COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve a thermal load capacity of a generator switch, in electrical equipment for feeding and/or switching a large current and/or high voltage. SOLUTION: In the vicinity of a protective enclosure cover 3a of generator switches 20, 21, 22, radiation plates 5, 50, 51, 52 have at least one flexed metal sheet 50a. This sheet is used for feeding the stream along the protective enclosure cover. A typical execution mode includes the radiation plate electrically further thermally insulated from a housing 3, the radiation plate making structures 51a, 51c for guiding air on an inner surface 5a deflect in a horizontal direction, the flexed metal sheet with an inclined part lined up in a region 30a flattened on the protective enclosure cover, and the flexed metal sheet toward a cooling element 6 on the protective enclosure cover. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve a cooling efficiency of an outgoing generator line etc. by arranging a contact pressure means. SOLUTION: The cooling device relates to an electrical operating means, which has a cooling-target surface 12. The cooling device has a coolant, an outer wall the inside of which defines a volume 20 for the coolant, attachments 38 to secure the cooling device to the electrical operating means, and a contact pressure means 40. The outer wall is provided with a thermally conductive contact wall 32 having a contact surface 33 which is designed for a regional contact with the cooling-target surface 12. The contact pressure means 40 mechanically applies a prestress to the contact wall 32 to create a regional-contact pressure of the contact surface on the cooling-target surface, when the cooling device is attached to the electrical operating means. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of diffusing a heat loss from an internal conductor and to provide a circuit breaker. SOLUTION: The circuit breaker (20R, 20S, and 20T) having elongated internal conductors (21R, 21S, and 21T) and outer conductors (22R, 22S, and 22T) like a housing has at least one heat pipe (1), extending from this inner conductor (21R, 21S, and 21T) to outer conductors (22R, 22S, and 22T) and having an insulating hollow object (5) for forming an electric insulating gap. This heat pipe (1) has a flexible deformable part (9). This heat pipe (1) can pass along the inside of a support insulator (24), which supports the inner conductor (21R, 21S, and 21T). In addition to a working medium, the heat pipe (1) contains an auxiliary gas which produces dielectric strength, strengthened at a low temperature. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
A heat pipe (1) carries off heat-loss in an inner conductor (21) and extends from the inner conductor as far as an outer conductor (22). It also has an insulating hollow body (5) to form an electric insulating section (7). The heat pipe can run in an insulator (24) to support the inner conductor. An independent claim is also included for a method for cooling a heavy-duty circuit breaker's inner conductor stretched as an oblong and surrounded by an outer conductor in the form of a casing.
Abstract:
A heat pipe (1) carries off heat-loss in an inner conductor (21) and extends from the inner conductor as far as an outer conductor (22). It also has an insulating hollow body (5) to form an electric insulating section (7). The heat pipe can run in an insulator (24) to support the inner conductor. An independent claim is also included for a method for cooling a heavy-duty circuit breaker's inner conductor stretched as an oblong and surrounded by an outer conductor in the form of a casing.
Abstract:
Un limitador de corriente de fallo superconductor, incluyendo un compuesto conductor en forma de banda (1) con una primera y una segunda superficie principal, incluyendo una capa superconductora (11) hecha de un material superconductor a alta temperatura y una capa de derivación eléctrica (12), y una capa barrera térmica no conductora eléctrica (3) en contacto con la primera superficie principal del compuesto conductor (1), y dispuesta en la primera superficie principal de modo que se pueda poner en contacto con un fluido de refrigeración, caracterizado porque la capa barrera térmica (3) tiene propiedades térmicas que aumentan un tiempo de recuperación trec necesario para que el compuesto conductor (1) se enfríe por debajo de una temperatura crítica Tc del superconductor (11) después de un evento de fallo, en comparación con un compuesto conductor idéntico sin capa barrera térmica, y porque el grosor de la capa barrera térmica (3) es entre aproximadamente 0, 3 y 2 mm.
Abstract:
The present invention relates to a high-voltage insulation system which is suitable for low temperatures and which, in addition to a cooling liquid (3) comprises a solid material insulator (2) based on a cellulose fabric (20). The solid material insulator (2) is preferably used in the form of pressboards and is impregnated with a polymer resin (21). It has a high partial discharge inception field of 77 K and, in addition, its thermal coefficient of expansion is optimally matched to that of ceramic high-temperature superconductors. The pressboards can be formed in the dry stage, in particular to produce coil formers, and are joined together alternately with cotton fabrics to form laminates of any desired thickness.