Coolant feedthrough for vacuum plants, comprises a flange with mounting holes for a fastener, a transmission hole for transmitting a coolant having a coolant terminal arranged on each side of the flange, and a terminal area

摘要

The coolant feedthrough comprises a flange (1) with mounting holes (13) for a fastener, a transmission hole for transmitting a coolant having a coolant terminal arranged on each side of the flange, and a terminal area for attaching the flange at a mating surface surrounding a housing, where insulating sleeves are arranged in the mounting holes at the terminal area of a first insulator ring. A second insulator ring is arranged at a screwed surface opposite to the terminal area, extends itself over the mounting holes, and comprises holes corresponding with the mounting holes. The coolant feedthrough comprises a flange (1) with mounting holes (13) for a fastener, a transmission hole for transmitting a coolant having a coolant terminal arranged on each side of the flange, and a terminal area for attaching the flange at a mating surface surrounding a housing, where insulating sleeves are arranged in the mounting holes at the terminal area of a first insulator ring. A second insulator ring is arranged at a screwed surface opposite to the terminal area, extends itself over the mounting holes, and comprises holes corresponding with the mounting holes. A pressure ring (25) is arranged on the second insulator ring arranged at the screwed surface, and comprises the holes corresponding with the mounting holes of the flange. A sealing ring (26) is arranged at the terminal area of the flange or the first insulator ring arranged at the terminal area. The flange, on its side facing the opening of the mating surface, has an extension that protrudes into the opening. The first insulator ring arranged at the terminal area of the flange on its side facing the opening of the mating surface has a groove. The sealing ring is arranged in the groove. A third insulator ring (23) is arranged at the terminal area of the flange, whose outer diameter is smaller than the inner diameter of the first insulator ring. The sealing ring is arranged between the first and third insulator rings. The first and third insulator rings comprise a collar, which protrudes into the opening of the mating surface to center the flange with respect to the opening and to electrically isolate from the opening.