A short screen device for electroslag furnace

Abstract

The utility model discloses a short-net device for an electroslag furnace, including a transformer, a connection end of the transformer fixedly connected to a water-cooled copper bar through a first connecting piece, a connection end of the water-cooled copper bar fixedly connected to one end of a first conductive copper plate, the other end of the first conductive copper plate fixedly connected to a shunt, the shunts are respectively equipped with second conductive copper plates distributed symmetrically in the center, the second conductive copper plate is fixedly equipped with a first busbar connecting frame, the water-cooled copper bar is fixedly connected to one end of a third conductive copper plate, the other end of the third conductive copper plate is fixedly connected to a fourth conductive copper plate, the fourth conductive copper plate is fixedly equipped with a second busbar connecting frame, and a second connecting piece is fixedly connected between the water-cooled copper bar and the transformer. The coaxial layout method can reduce the power consumption of the device during use, and also optimizes the overall structure of the device, making it more stable and reliable in operation during use, and convenient for maintenance and overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of electric slag furnaces, in particular to a short-net device of an electric slag furnace. Background Art

[0002] The electric slag furnace is a highly efficient and energy-saving smelting equipment, which is widely used in the smelting process of steel, nonferrous metals, rare earth and other industries. A short-net device is installed in the electric slag furnace, through which the consumable electrode, slag pool, metal molten pool, steel ingot, bottom water tank and transformer are connected to form a loop, thereby realizing the whole smelting process. The working characteristics of the existing short-net device are large current, short length and complex structure. There are many faults in the harsh working environment, and the inspection and maintenance are inconvenient. To this end, we propose a short-net device for the electric slag furnace. Utility Model Content

[0003] The utility model aims to provide a short net device for an electroslag furnace to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a short-circuit device for an electric slag furnace, comprising a transformer, wherein the connection end of the transformer is fixedly connected to a water-cooled copper bar through a first connecting piece, the connection end of the water-cooled copper bar is fixedly connected to one end of a first conductive copper plate, the other end of the first conductive copper plate is fixedly connected to a shunt, the shunts are respectively equipped with second conductive copper plates distributed in a central symmetrical manner, the second conductive copper plates are fixedly equipped with a first busbar connecting frame, one end of a third conductive copper plate is fixedly connected to the water-cooled copper bar, the other end of the third conductive copper plate is fixedly connected to a fourth conductive copper plate, the fourth conductive copper plate is fixedly equipped with a second busbar connecting frame, and a second connecting piece is fixedly connected between the water-cooled copper bar and the transformer.

[0005] Preferably, the first connecting member, the second connecting member, the first conductive copper plate, the second conductive copper plate, the first busbar connecting frame, the third conductive copper plate, the fourth conductive copper plate and the side wall of the second busbar connecting frame are respectively fixedly mounted with insulating plates.

[0006] Preferably, the first connecting member and the second connecting member are copper-clad flexible connections.

[0007] Preferably, the water-cooled copper busbar includes a connecting portion, the bottom of the connecting portion is fixedly connected to the cooling portion via a heat exchange portion, a cooling groove is provided in the cooling portion, the input end of the cooling groove is fixedly connected to a water inlet joint via a connecting pipe, and the output end of the cooling groove is fixedly connected to a water outlet joint via a connecting pipe.

[0008] Preferably, the number of the cooling grooves is at least three groups, and the three groups of cooling grooves are evenly distributed from top to bottom, and the cooling grooves are distributed in a serpentine shape in the cooling part.

[0009] Compared with the prior art, the utility model has the following beneficial effects: a short-net device for an electroslag furnace re-arranges the first busbar connecting frame and the second busbar connecting frame for busbar connection in the device, and adopts a coaxial layout to reduce the power consumption of the device during use, and also optimizes the overall structure of the device, making it more stable and reliable during use, and convenient for maintenance and overhaul;

[0010] The water-cooled copper busbar in the device is redesigned, and evenly distributed cooling grooves are set in the water-cooled copper busbar. The water-cooled copper busbar is cooled by passing cooling water into the cooling grooves to ensure that it is at a low stability during use, thereby improving its efficiency and stability in transmitting current. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a structural schematic diagram of the water-cooled copper bar of the utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the cooling groove distribution of the utility model.

[0014] In the figure: 1. transformer; 2. first connecting piece; 3. water-cooling copper busbar; 31. connecting part; 32. heat exchange part; 33. cooling part; 34. cooling trough; 35. connecting pipe; 36. water inlet joint; 37. water outlet joint; 4. first conductive copper plate; 5. shunt; 6. second conductive copper plate; 7. first busbar connecting frame; 8. third conductive copper plate; 9. fourth conductive copper plate; 10. second busbar connecting frame; 11. second connecting piece; 12. insulating plate. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0016] See also Figure 1 , Figure 2 and Figure 3The utility model provides a technical solution: a short-circuit device for an electroslag furnace, comprising a transformer 1, a connecting end of the transformer 1 is fixedly connected with a first connecting piece 2, an output end of the transformer 1 is connected to a water-cooled copper bar 3 through the first connecting piece 2, one end of a first conductive copper plate 4 is fixedly connected in the water-cooled copper bar 3, the other end of the first conductive copper plate 4 is fixedly connected to a shunt 5, and the current is respectively led to two smelting stations by setting the shunt 5, two output ends of the shunt 5 are respectively fixedly connected with a second conductive copper plate 6, the upper and lower side walls of the second conductive copper plate 6 are respectively fixedly equipped with a first busbar connecting frame 7, one end of a third conductive copper plate 8 is fixedly connected in the connecting end of the water-cooled copper bar 3, the other end of the third conductive copper plate 8 is fixedly connected with a fourth conductive copper plate 9 which is axially symmetrically distributed, the upper and lower side walls of the fourth conductive copper plate 9 are respectively fixedly equipped with a second busbar connecting frame 10, and a second connecting piece 11 is fixedly connected between the connecting end of the water-cooled copper bar 3 and the transformer 1.

[0017] The water-cooled copper bar 3 and the transformer 1 are connected by a first connector 2 and a second connector 11 . The first connector 2 and the second connector 11 are copper-skin flexible connectors. The electromagnetic vibration generated by the transformer 1 can be effectively isolated by providing the copper-skin flexible connector.

[0018] The first connector 2, the second connector 11, the first conductive copper plate 4, the second conductive copper plate 6, the first busbar connecting frame 7, the third conductive copper plate 8, the fourth conductive copper plate 9 and the side wall of the second busbar connecting frame 10 are respectively fixedly equipped with insulating plates 12, and the copper plates are isolated from each other by the insulating plates 12, thereby improving the safety of the device during use;

[0019] like Figure 2 As shown in the figure, the first busbar connecting frame 7 and the second busbar connecting frame 10 are axially symmetrically distributed with respect to the smelting station. The first busbar connecting frame 7 and the second busbar connecting frame 10 are respectively used for assembling the upper and lower busbars. The upper and lower busbars are divided into different directions. The lower busbar is connected to the conductive plate in the smelting station. The upper busbar passes through the collector in the smelting station and is transferred to the conductive pull rod, the consumable electrode, and the newly generated steel ingot, and then returns to the conductive plate, and finally returns to the transformer 1. The first busbar connecting frame 7 and the second busbar connecting frame 10 adopt an axially symmetrical layout, which realizes the coaxial low power consumption performance and improves the stability during operation, and can be widely used in steel, metallurgy and other industries.

[0020] like Figure 3As shown in the figure, the water-cooled copper busbar 3 includes a connecting portion 31, which is used to connect with each conductive copper plate. The bottom of the connecting portion 31 is fixedly connected to the cooling portion 33 through an integrally formed heat exchange portion 32. The heat exchange portion 32 absorbs the heat generated by the connecting portion 31, and the heat exchange portion 32 is cooled by the cooling portion 33 to reduce the temperature of the connecting portion 31, thereby improving the stability of the electrical connection in the connecting portion 31. The cooling portion 33 is provided with cooling grooves 34 distributed in a serpentine shape. The number of cooling grooves 34 is at least three groups, which are evenly distributed from top to bottom to the cooling portion 3. 3, the output end of the cooling groove 34 is fixedly connected to the water inlet joint 36 through the connecting pipe 35, and the output end of the cooling groove 34 is fixedly connected to the water outlet joint 37 through the connecting pipe 35. The water inlet joint 36 and the water outlet joint 37 are used to connect with the external cooling water circulation pipeline. The cooling water is supplied to the cooling part 33 through the water inlet joint 36 and the connecting pipe 35, and is discharged through the water outlet joint 37 after the circulation of the cooling groove 34 completes the cooling treatment of the water-cooled copper bar 3 as a whole. By designing the cooling groove 34 in the water-cooled copper bar 3, the heat dissipation efficiency of the water-cooled copper bar 3 is improved.

Claims

1. A short-circuit device for an electroslag furnace, comprising a transformer (1), characterized in that: The connection end of the transformer (1) is fixedly connected to a water-cooled copper bar (3) via a first connecting member (2); the connection end of the water-cooled copper bar (3) is fixedly connected to one end of a first conductive copper plate (4); the other end of the first conductive copper plate (4) is fixedly connected to a shunt (5); the shunts (5) are respectively equipped with second conductive copper plates (6) distributed in a centrally symmetrical manner; the second conductive copper plates (6) are fixedly equipped with a first busbar connecting frame (7); the water-cooled copper bar (3) is fixedly connected to one end of a third conductive copper plate (8); the other end of the third conductive copper plate (8) is fixedly connected to a fourth conductive copper plate (9); the fourth conductive copper plate (9) is fixedly equipped with a second busbar connecting frame (10); and a second connecting member (11) is fixedly connected between the water-cooled copper bar (3) and the transformer (1).

2. The short screen device for an electroslag furnace according to claim 1, characterized in that: The first connecting member (2), the second connecting member (11), the first conductive copper plate (4), the second conductive copper plate (6), the first busbar connecting frame (7), the third conductive copper plate (8), the fourth conductive copper plate (9) and the side wall of the second busbar connecting frame (10) are respectively fixedly mounted with insulating plates (12).

3. The short screen device for an electroslag furnace according to claim 1, characterized in that: The first connecting piece (2) and the second connecting piece (11) are copper-clad flexible connections.

4. The short screen device for an electroslag furnace according to claim 1, characterized in that: The water-cooled copper busbar (3) comprises a connecting portion (31), the bottom of the connecting portion (31) being fixedly connected to a cooling portion (33) via a heat exchange portion (32), a cooling groove (34) being provided in the cooling portion (33), an input end of the cooling groove (34) being fixedly connected to a water inlet joint (36) via a connecting pipe (35), and an output end of the cooling groove (34) being fixedly connected to a water outlet joint (37) via a connecting pipe (35).

5. The short screen device for an electroslag furnace according to claim 4, characterized in that: The number of the cooling grooves (34) is at least three groups, and the three groups of cooling grooves (34) are evenly distributed in sequence from top to bottom. The cooling grooves (34) are distributed in a serpentine shape in the cooling portion (33).

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