Electric furnace conductive cross arm chuck connecting plate

Abstract

The utility model discloses an electric furnace conductive cross arm chuck connecting plate, which relates to the technical field of conductive cross arms and comprises a conductive cross arm main body, a second water passing tank is arranged at the top of one side of the conductive cross arm main body, and a first water passing tank is arranged at the bottom end of one side of the conductive cross arm main body. The front end of each of the first water passing tank and the second water passing tank adopts a copper-steel composite plate with a copper clad layer and a carbon steel base layer, and the size of the copper clad layer is larger than that of the carbon steel base layer. The first chuck connecting plate base layer carbon steel plate and the second chuck connecting plate base layer carbon steel plate are connected with the first water passing box base layer carbon steel plate and the second water passing box base layer carbon steel plate in a welding mode, and finally the flat-end reinforcing screws are used for reinforcing and fixing. And the defect that copper plates covered on three side surfaces of the chuck connecting plate are easy to burn out and crack is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of conductive cross arms, in particular to a chuck connecting plate for an electric furnace conductive cross arm. Background Art

[0002] The key equipment of the steel plant electric furnace, the electric furnace conductive cross arm, is the main device for conducting electricity and supporting and clamping the electrode during steelmaking. The outer ring material of the entire electric furnace conductive cross arm uses a copper-steel composite steel plate. The outer copper coating is mainly for conductivity and power consumption, and the inner carbon steel layer is mainly for the strength of the conductive cross arm. The front end clamps the electrode and is close to the electric furnace. The temperature is high, more than 1500 °C of the molten steel furnace temperature, the current is large, 100 KV, the voltage is high, 220 KV, and the vibration is large during operation;

[0003] For the chuck connecting plate at the front end of the existing electric furnace conductive cross arm, its three sides are covered with copper plates and welded at the edges. There are often micro-gaps between the covered copper plates and the lower substrate, which will cause an increase in the voltage drop at the gap interface, resulting in an increase in the electric field strength at the interface in the micro-gap state. Under the action of such a large current and high voltage, the electric field strength at the micro-gap interface increases rapidly, and a space discharge phenomenon will occur between the micro-gap interfaces, that is, micro-arc sparks appear. Especially when covering the copper plate, there are also impurities such as dust and fine iron filings between the micro-gap interfaces. Due to the existence of these impurities, the resistance between the micro-gap interfaces will increase significantly, and the arc sparks will also increase significantly, and then burn through the covered copper plate on the side or burn out and crack the edge weld of the relatively weak covered copper plate;

[0004] In actual use of this structure, the covered copper plate on the side of the chuck connecting plate is burned out and cracked in as short as 3 months, and generally, the covered copper plate of the chuck connecting plate will be burned out and cracked in about 1 year, causing the entire electric furnace conductive cross arm to fail. In view of this, in-depth research on the above problems has led to the generation of this case. Content of the Utility Model

[0005] The purpose of the utility model is to provide a chuck connecting plate for an electric furnace conductive cross arm to solve the problem that the copper plate of the structure with the side covered with copper plates is easily damaged and cracked as mentioned in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An electric furnace conductive cross-arm chuck connecting plate, comprising a conductive cross-arm main body. A second water passing tank is provided at the top of one side of the conductive cross-arm main body, and a first water passing tank is provided at the bottom end of one side of the conductive cross-arm main body. One end of the first water passing tank is welded with a first chuck connecting plate clad copper plate, and one end of the first chuck connecting plate clad copper plate is provided with a first chuck connecting plate base carbon steel plate. One end of the second water passing tank is welded with a second chuck connecting plate clad copper plate, and one end of the second chuck connecting plate clad copper plate is provided with a second chuck connecting plate base carbon steel plate. A plurality of flat-end strengthening screws are provided at one ends of the first chuck connecting plate base carbon steel plate and the second chuck connecting plate base carbon steel plate, and one ends of the flat-end strengthening screws respectively extend into the interiors of the first water passing tank and the second water passing tank.

[0007] Preferably, bolt holes are provided at one ends of the first water passing tank and the second water passing tank, and the connection mode between the bolt holes and the flat-end strengthening screws is threaded connection.

[0008] Preferably, the shape and size of the first chuck connecting plate base carbon steel plate and the second chuck connecting plate base carbon steel plate are the same, and the thickness of the first chuck connecting plate base carbon steel plate and the second chuck connecting plate base carbon steel plate is 20 mm.

[0009] Preferably, the shape and size of the first chuck connecting plate clad copper plate and the second chuck connecting plate clad copper plate are the same, and the thickness of the first chuck connecting plate clad copper plate and the second chuck connecting plate clad copper plate is 45 mm.

[0010] Preferably, the centers of the first chuck connecting plate clad copper plate and the first chuck connecting plate base carbon steel plate are on the same horizontal line, and the length and width of the first chuck connecting plate clad copper plate are respectively greater than the length and width of the first chuck connecting plate base carbon steel plate.

[0011] Preferably, the first chuck connecting plate clad copper plate and the bottom end of the first water passing tank are on the same horizontal plane, and the height of the first chuck connecting plate clad copper plate is less than the height of the first water passing tank.

[0012] Preferably, a groove is provided at one end of the flat-end strengthening screw, and the shape of the groove is a regular hexagon.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] A composite plate is made by using a chuck connecting plate to bond a clad copper plate and a base carbon steel plate of the chuck connecting plate. The size of the clad copper plate of the chuck connecting plate is larger than that of the water tank and larger than the base carbon steel plate of the chuck connecting plate. The base carbon steel plate of the chuck connecting plate is welded to the base carbon steel plate of the water tank, and finally, flat-end strengthening screws are used for strengthening and fixing. It is not necessary to cover the three sides of the chuck connecting plate with copper plates and weld their edges. This structure not only ensures the copper-steel composite strength of the chuck connecting plate but also avoids the deficiencies and defects of the copper plates covering the three sides of the chuck connecting plate being easily burned out and cracked. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front sectional structural schematic diagram of the present utility model;

[0016] Figure 2 is a partial side view structural schematic diagram of the present utility model;

[0017] Figure 3 is a partial front sectional structural schematic diagram of the present utility model.

[0018] In the figure: 1. First water tank; 2. First base carbon steel plate of the chuck connecting plate; 3. Flat-end strengthening screw; 4. First clad copper plate of the chuck connecting plate; 5. Second base carbon steel plate of the chuck connecting plate; 6. Second clad copper plate of the chuck connecting plate; 7. Second water tank; 8. Conductive cross arm body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment: Please refer to Figures 1-3 , an electric furnace conductive cross arm chuck connecting plate, including a conductive cross arm body 8. A second water tank 7 is provided at the top on one side of the conductive cross arm body 8, and a first water tank 1 is provided at the bottom on one side of the conductive cross arm body 8. One end of the first water tank 1 is welded with a first clad copper plate 4 of the chuck connecting plate, and a first base carbon steel plate 2 of the chuck connecting plate is provided at one end of the first clad copper plate 4 of the chuck connecting plate. One end of the second water tank 7 is welded with a second clad copper plate 6 of the chuck connecting plate, and a second base carbon steel plate 5 of the chuck connecting plate is provided at one end of the second clad copper plate 6 of the chuck connecting plate;

[0021] The shape and size of the first chuck connecting plate base carbon steel plate 2 and the second chuck connecting plate base carbon steel plate 5 are the same, and the thickness of the first chuck connecting plate base carbon steel plate 2 and the second chuck connecting plate base carbon steel plate 5 is 20 mm;

[0022] The shape and size of the first chuck connecting plate clad copper plate 4 and the second chuck connecting plate clad copper plate 6 are the same, and the thickness of the first chuck connecting plate clad copper plate 4 and the second chuck connecting plate clad copper plate 6 is 45 mm;

[0023] The centers of the first chuck connecting plate clad copper plate 4 and the first chuck connecting plate base carbon steel plate 2 are on the same horizontal line, and the length and width of the first chuck connecting plate clad copper plate 4 are respectively greater than the length and width of the first chuck connecting plate base carbon steel plate 2;

[0024] The first chuck connecting plate clad copper plate 4 is on the same horizontal plane as the bottom end of the first water tank 1, and the height of the first chuck connecting plate clad copper plate 4 is greater than the height of the first water tank 1;

[0025] Specifically, as Figure 1 , Figure 2 and Figure 3 shown, the area of the clad copper plate is large and the area of the base steel plate is small. It is only welded to the base carbon steel plate of the water tank. The base carbon steel plate on the chuck connecting plate does not exceed the height of the base carbon steel plate of the water tank, and it is not necessary to cover the three sides of the chuck connecting plate with copper plates and weld their edges.

[0026] A plurality of flat-end strengthening screws 3 are provided at one end of the first chuck connecting plate base carbon steel plate 2 and the second chuck connecting plate base carbon steel plate 5, and one end of each flat-end strengthening screw 3 extends into the first water tank 1 and the second water tank 7 respectively;

[0027] Bolting holes are provided at one end of the first water tank 1 and the second water tank 7, and the connection between the bolting holes and the flat-end strengthening screws 3 is a threaded connection;

[0028] A groove is provided at one end of the flat-end strengthening screw 3, and the shape of the groove is a regular hexagon;

[0029] Specifically, as Figure 1 , Figure 2 and Figure 3 shown, this structure can ensure the copper-steel composite strength of the chuck connecting plate. It can avoid the splitting of the copper-steel composite plate due to the weight and vibration of the electrode during use.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A conductive cross arm chuck connecting plate for an electric furnace, comprising a conductive cross arm body (8), a second water box (7) being arranged at the top of one side of the conductive cross arm body (8), and a first water box (1) being arranged at the bottom of one side of the conductive cross arm body (8), characterized in that: A first clamp connecting plate composite copper plate (4) is welded to one end of the first water transfer box (1), and a first clamp connecting plate base carbon steel plate (2) is arranged at one end of the first water transfer box (1); a second clamp connecting plate composite copper plate (6) is welded to one end of the second water transfer box (7), and a second clamp connecting plate base carbon steel plate (5) is arranged at one end of the second water transfer box (7); a plurality of flat-end reinforcing screws (3) are arranged at one end of the first water transfer box (2) and the second water transfer box (5), and one end of the flat-end reinforcing screws (3) extends to the inside of the first water transfer box (1) and the second water transfer box (7), respectively.

2. The electric furnace conductive cross arm clamp connection plate according to claim 1, characterized in that: One end of each of the first water transfer box (1) and the second water transfer box (7) is provided with a bolt hole, and the connection between the bolt hole and the flat-end reinforcement screw (3) is a threaded connection.

3. The electric furnace conductive cross arm clamp connection plate according to claim 1, characterized in that: The first clamp connecting plate base carbon steel plate (2) and the second clamp connecting plate base carbon steel plate (5) have the same shape and size, and the thickness of the first clamp connecting plate base carbon steel plate (2) and the second clamp connecting plate base carbon steel plate (5) is 20 mm.

4. The electric furnace conductive cross arm clamp connection plate according to claim 1, characterized in that: The first clamping plate composite copper plate (4) and the second clamping plate composite copper plate (6) have the same shape and size, and the thickness of the first clamping plate composite copper plate (4) and the second clamping plate composite copper plate (6) is 45 mm.

5. The electric furnace conductive cross arm clamp connection plate according to claim 1, characterized in that: The centers of the first clamp connecting plate composite copper plate (4) and the first clamp connecting plate base carbon steel plate (2) are on the same horizontal line, and the length and width of the first clamp connecting plate composite copper plate (4) are respectively greater than the length and width of the first clamp connecting plate base carbon steel plate (2).

6. The electric furnace conductive cross arm clamp connection plate according to claim 1, characterized in that: The first clamp connection plate composite copper plate (4) and the bottom end of the first water transfer box (1) are located on the same horizontal plane, and the height of the first clamp connection plate composite copper plate (4) is greater than the height of the first water transfer box (1).

7. The electric furnace conductive cross arm clamp connection plate according to claim 1, characterized in that: One end of the flat-end reinforcing screw (3) is provided with a groove, and the shape of the groove is a regular hexagon.

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