TH4359B - Electrical connections for contact with molten metal - Google Patents

Abstract

An electrical connection device to be placed in contact with the molten metal mass. It consists of a long metal bar (5) inserted through the wall of the container. Let one end touch the molten metal in the tub. The other end consists of a terminal section (8) connected from the outer wall of the container, a casing (9), made of a conductive and heat-conducting material, encircled and in contact with that terminal part, the casing is connected. With an electric power source which the casing is cooled by the coolant fluid This device is used when a contact is required between the electrode rod and the molten material and eliminates the Risk of excessive electrode melting

Claims (2)

1.Electrical connection to be placed in the wall of a metal container. With one end of it being in contact with the molten metal mass inside the container. And the other end that passes out into the outer wall of the container is connected to the power supply. And cooled by the circulating fluid The device consists of .- (a) a long metallic object for passing through the wall of the vessel in such a way that one end is in contact with the molten metal and the other end is a connector protruding to the outside of the vessel. (B) a casing made of good thermal and electrical conductive material that covers and comes into contact with such terminal parts. The casing is connected to a power source and (c) a cooling aid to the casing. By circulation of cooling fluid. 2. Electrical connection equipment according to claim 1, in which the connector of the long metallic object. And the casing has a circular cross-sectional ground And the sheath was arranged around and in contact with the aforementioned terminal part of a long metal object by Method of fastening longitudinal anchor 3. Electrical connection device according to claim 1 or 2, in which the sheath extends beyond the lower end of the terminal part of the said long metallic object and forms a hole. Free up inside the casing The gaps contain a plug made of fireproof material to be crashed into the lower end of the said purpose. 4. Electrical connection equipment according to one of the above claims. It consists of a casing that surrounds the casing in such a way that it is spaced in a ring gap to provide a passage for the cooling fluid. The casing consists of an inlet and an outlet hole connected to the Supply of cooling fluid for delivery into the aforementioned ring gap 5. Electrical connection equipment according to one of the claims 1 to 3, which the cooling part of the aforementioned casing consists of: One or more channels are located in the transverse outer surface of the casing to circulate cooling fluid - and the casing covering the funnel. The cladding consists of an entrance and an exit hole. Connected to the end of the channel It is also connected to the supply of cooling fluid. 6. Electrical connection equipment according to claim 5, in which the transverse outer surface of the casing consists of a number of longitudinal channels scattered throughout. 7. Electrical connection device according to claim 5, in which the transverse outer surface of the sheath consists of a threaded channel. One number of channels 8. Electrical connection equipment according to claim 5, in which the lateral outer surface of the casing contains a large number of spiral channels to form a parallel cooling circuit. Connect electrically according to any of the claims 4 through 8 at the entrance hole. And holes for the exit of the fluid to cool Provided to the casing were arranged at the lower and upper ends of the cladding respectively. The exit hole at the top end of the casing consists of a ring groove surrounding the casing and has an inner circumference attached to one or more of the exit points of the casing while the outer circumference is attached. It is connected to the concentric annular exit chamber through a number of horizontal channels located in the front surface of the thicker part of the enclosure at the top 1 0. According to any of the above claims 4 through 9, the top of the enclosure ends at a circular base plate, which is equipped with a support to fix it on the bottom wall of the enclosure. Metal container The helper also creates an electrical insulation between the container's metal shell and the casing. 1.Electrical connecting devices according to one of the above claims are devices used in a steel melting electric furnace. 2. The equipment according to claim 11 that the furnace is a DC arc furnace.