Coolable electrical component
AssigneeBBC Brown, Boveri & Company, Limited
InventorsGeorg Koppl, Gerhard Linhofer
Life of this patent
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Abstract
A coolable electrical component having a housing (1) filled with insulating gas, and a conductor (2) of hollow cylindrical construction causing a high voltage, arranged in this housing (1). Through the interior space (7) of the conductor a coolant is circulated. The electrical component occupies a smaller space and yet allows increased current load capacity. This is achieved by providing a high-pressure tank (19) extending in the longitudinal direction of the conductor (2) in the interior space (7) thereof. The tank is connected to a gas liquefaction installation by means of outlet orifices (18) perforated in its wall at regular intervals thereof. Such a componet may preferably be a tubular gas cable or a component of a gas-insulated, metal-encapsulated switchgear.
Claims10
Coolable electrical component, comprising:
- an elongated, hollow conductor having an inner space and at least one orifice therethrough to allow said inner space to communicate outside said hollow conductor;
- an outer housing surrounding and radially spaced from said hollow conductor and insulated therefrom, said outer housing defining an annular chamber between said outer housing and said hollow conductor and including an inlet opening and an outlet opening;
- a high pressure vessel disposed within said hollow conductor, said high pressure vessel including an interior space within said vessel, an insulating fluid in said interior space of said vessel, means for connecting said interior space to said inlet opening of said outer housing, and at least one expansion nozzle in said high pressure vessel to allow said insulating fluid in said interior space of said vessel to communicate with and expand into said inner space of said conductor;
- means for presssurizing and cooling said insulating fluid and for circulating said fluid through said inlet opening of said outer housing through said means for connecting said interior space to said inlet opening of said outer housing through the expansion nozzle to said inner space of said conductor through the said at least one orifice into said annular chamber and out of said housing through said outlet opening;
- and
- metering means coupled to said inlet opening for controlling the rate at which said insulating fluid flows through said inlet opening.
Dependencies are inferred from the claim text.