A short-net copper tube confluence fixture

Abstract

The utility model discloses a short-net copper tube collector clamp, comprising two weight-lifting clamps connected by weight-lifting bolts; two integral collector plates are arranged on both sides of the two weight-lifting clamps, insulating partitions are arranged on the outer sides of the two integral collector plates, between the two integral collector plates and the adjacent weight-lifting clamps, and between the two weight-lifting clamps, more than two bolts and insulating sleeves sleeved thereon pass through the two integral collector plates, the two weight-lifting clamps and all the insulating partitions, and fastening nuts are arranged at the ends of the bolts; the integral collector plates are provided with a plurality of circular holes, the axes of the circular holes are perpendicular to the axes of the bolts and are arranged in staggered layers, the front and rear end surfaces of the integral collector plates corresponding to each circular hole are fixedly connected with short-net copper tubes, and the outer diameter of the short-net copper tubes covers the circular holes; the utility model can avoid arcing between the copper tube and the collector clamp, reduce the short-net failure rate, thereby preventing uneven electrode baking and damage to equipment, and has low manufacturing cost.

Description

Technical Field

[0001] The utility model relates to a short-net copper tube confluence fixture, in particular to a short-net copper tube confluence fixture used for a submerged arc furnace. Background Art

[0002] In recent years, large-scale enclosed submerged arc furnaces have been widely used. The existing submerged arc furnaces, whether they are combined gripper structures or copper tile structures, are all connected in a basic conductive mode: transformer - short-net copper tube - cable - copper tube in the furnace - copper tile (or conductive element) - electrode. The short-net copper tubes are fixed and current-divided by the confluence fixture; the existing short-net copper tube confluence fixtures are as follows: Figure 1 As shown, it includes two lifting clamps 16 and 17 connected by a lifting bolt 13, and a left busbar 14 and a right busbar 15 are arranged on both sides of the two lifting clamps 16 and 17. The left busbar 14 and the right busbar 15 are arranged with a gap and are provided with a plurality of paired arc grooves. A plurality of busbar copper tubes 18 are clamped between the left busbar 14 and the right busbar 15. Insulating partitions 19 are arranged on the outsides of the two groups of busbars, between the two groups of busbars and the adjacent lifting clamps, and between the two lifting clamps. In order to ensure the tightness of the clamping, an insulating partition 19 is arranged on each of the two groups of busbars. The upper and lower sides of the root busbar copper tube 18 are provided with bolts 20 that pass through two groups of busbar clamps, two weight clamps and all insulating partitions. The outer sleeve of the bolt 20 is provided with an insulating sleeve 21, and the ends of the bolt 20 are provided with fastening nuts; but it has the following disadvantages: 1. Because the short network system and the busbar clamp are in a high temperature state for a long time, the bolts 20 at both ends of the two groups of busbar clamps have reduced strength, resulting in a certain degree of relaxation, and the clamps 14, 15 and the copper tube 18 cannot be tightly connected, the resistivity increases, and thus the frequency of arcing of the equipment increases. 2. The outer periphery of the bolt 20 is separated from the busbar by an insulating sleeve 21 to avoid eddy currents, but because there are many fastening points, as long as one insulating sleeve 21 is damaged, and the busbar clamp is in a state of severe dust for a long time, dust enters the gap and increases the arcing phenomenon of the entire busbar clamp. 3. When there is a slight mismatch between the size of the copper tube 18 and the arc-shaped groove size of the left and right confluence clamps 14 and 15, arcing may occur between the copper tube 18 and the confluence clamps 14 and 15. Once arcing occurs frequently, the copper tube may break due to arcing, resulting in current imbalance, uneven electrode baking, and damage to the equipment. Summary of the invention

[0003] The purpose of the utility model is to provide a short-net copper tube confluence fixture to address the deficiencies of the prior art, which can avoid arcing between the copper tube and the confluence fixture, reduce the short-net failure rate, thereby preventing uneven electrode baking and damage to equipment, and has low manufacturing cost.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a short-mesh copper tube busbar clamp, comprising two lifting clamps connected by lifting bolts; two integral busbars are arranged on both sides of the two lifting clamps, and insulating partitions are arranged on the outer sides of the two integral busbars, between the two integral busbars and the adjacent lifting clamps, and between the two lifting clamps, more than two bolts and their insulating sleeves pass through the two integral busbars, the two lifting clamps and all the insulating partitions, and the ends of the bolts are provided with fastening nuts; the integral busbars are provided with a plurality of circular holes, the axes of the circular holes are perpendicular to the axes of the bolts and are staggered, and the front and rear end surfaces of the integral busbars corresponding to each circular hole are fixedly connected with short-mesh copper tubes, and the outer diameter of the short-mesh copper tubes covers the circular holes.

[0005] In the utility model, since the two busbars are both integral and the short-net copper tubes are welded and fixedly connected to the busbars, the bolts only serve to connect the two integral busbars, which is convenient for lifting and installation. Even if there is a certain amount of looseness between the bolts and the busbars, the short-net copper tubes are still welded and fixedly connected to the busbars without gaps and arcing. Even if the insulating sleeve arranged outside the bolt is damaged, dust cannot enter between the short-net copper tubes and the busbars. In addition, since the short-net copper tubes are welded and fixedly connected to the busbars, even if the size of the copper tubes changes slightly, no gaps will be generated between the busbars. Arcing can be avoided, the failure rate of the short nets can be reduced, and uneven electrode baking and damage to equipment can be prevented. There is no need to process high-precision arc grooves and the outer circle of the copper tubes, and the number of bolts can be reduced, thereby reducing the manufacturing cost.

[0006] As a further improvement of the present invention, the outer diameter of the short mesh copper tube fixedly connected to the front and rear end surfaces of the integral busbar is equal to the diameter of the circular hole; this facilitates friction welding of the short mesh copper tube and the integral busbar, thereby ensuring the strength of the welding part and the load-bearing capacity of the short mesh after welding.

[0007] As a further improvement of the utility model, the outer insulating partitions of the two integral busbars are further provided with clamping plates, and the bolts and their insulating sleeves pass through the two clamping plates; the outer insulating partitions can be protected and shaped to improve the insulation effect.

[0008] In summary, the utility model can avoid arcing between copper tubes and current collecting fixtures, reduce short-circuit failure rate, thereby preventing uneven electrode baking and damage to equipment, and has low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the front view of the existing short-net copper tube confluence fixture.

[0010] Figure 2 It is the front view of the embodiment of the utility model.

[0011] Figure 3 for Figure 2 Left view of . DETAILED DESCRIPTION

[0012] In order to more clearly understand the purpose, technical solution and beneficial effects of the utility model, the utility model is further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following embodiments.

[0013] like Figure 2 , Figure 3 As shown, a short-net copper tube bus fixture of this embodiment includes two lifting clamps 1 and 2 connected by a lifting bolt 3; two integral busbars 4 and 5 are arranged on both sides of the two lifting clamps 1 and 2, and insulating partitions 6 are arranged on the outside of the two integral busbars 4 and 5, between the two integral busbars 4 and 5 and the adjacent lifting clamps 1 or 2, and between the two lifting clamps 1 and 2. The outer insulating partitions 6 of the two integral busbars 4 and 5 are also provided with clamping clamps 7 or 8, and three bolts are provided. 9 and its insulating sleeve 10 are all passed through the two clamping plates 7, 8, the two integral busbars 4, 5, the two lifting clamps 1, 2 and all the insulating partitions 6, and the ends of the bolts 9 are provided with fastening nuts 11; the integral busbars 4, 5 are provided with a plurality of circular holes, the axes of the circular holes are perpendicular to the axes of the bolts 9 and are arranged in staggered layers, and the front and rear end surfaces of the integral busbars 4, 5 corresponding to each circular hole are welded and fixedly connected with short mesh copper tubes 12, and the outer diameter of the short mesh copper tubes 12 is equal to the diameter of the circular hole.

[0014] When in use, the short-mesh copper tube 12 on the end face of the integral busbar 4, 5 close to the transformer side is connected to the transformer lead-out copper tube through the copper tube connector, and the short-mesh copper tube 12 on the other end face is connected to the water-carrying cable on the electrode side; in the utility model, since the two busbars 4, 5 are integral, and each short-mesh copper tube 12 is welded and fixedly connected to the busbars 4, 5, the bolt 9 only serves to connect the two integral busbars 4, 5, which is convenient for lifting and installation. Even if there is a certain amount of slack between the bolt 9 and the busbars 4, 5, each short-mesh copper tube 12 is still welded and fixedly connected to the busbars 4, 5, without gaps and arcing; even if the insulating sleeve 10 arranged outside the bolt 9 is damaged, the powder Dust cannot enter between the short-net copper tube 12 and the busbars 4, 5. In addition, each short-net copper tube 12 is welded and fixedly connected to the busbars 4, 5. Even if the copper tube size changes slightly, there will be no gap between the busbars, which can avoid arcing and reduce the failure rate of the short net, thereby preventing uneven electrode baking and damage to the equipment. There is no need to process high-precision arc grooves and the outer circle of the copper tube, and the number of bolts is reduced, which can reduce the manufacturing cost; the short-net copper tube 12 is friction-welded with the integral busbars 4, 5, and the welding strength is high, which can ensure the strength of the welding part and the bearing capacity of the short net after welding; the two clamping plates 7, 8 can protect the outer insulating partition 6 and shape it to improve the insulation effect.

Claims

1. A short-net copper tube confluence fixture, comprising two lifting clamps connected by lifting bolts; characterized in that: Two integral busbars are arranged on both sides of the two lifting clamps. Insulating partitions are arranged on the outer sides of the two integral busbars, between the two integral busbars and the adjacent lifting clamps, and between the two lifting clamps. More than two bolts and their insulating sleeves pass through the two integral busbars, the two lifting clamps and all the insulating partitions, and fastening nuts are arranged at the ends of the bolts. The integral busbars are provided with several circular holes, the axes of the circular holes are perpendicular to the axes of the bolts and are staggered. Short mesh copper tubes are fixedly connected to the front and rear end surfaces of the integral busbars corresponding to each circular hole, and the outer diameter of the short mesh copper tube covers the circular hole.

2. A short-net copper tube confluence fixture according to claim 1, characterized in that: The outer diameter of the short-mesh copper tube fixedly connected to the front and rear end surfaces of the integral busbar is equal to the diameter of the circular hole.

3. A short-net copper tube confluence fixture according to claim 1 or 2, characterized in that: The outer insulating partitions of the two integral busbars are also provided with clamping plates, and the bolts and their insulating sleeves pass through the two clamping plates.

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