Magnetic isolation device of submerged arc furnace

Abstract

The utility model discloses a magnetic isolation device of a submerged arc furnace, which relates to the technical field of submerged arc furnaces and comprises an electrode, circulating cooling water jackets are arranged on two sides of the electrode, a current-conducting plate is fixedly embedded on one side of each circulating cooling water jacket facing the electrode, and the circulating cooling water jackets surround the outer side of the current-conducting plate. A separation strip is arranged in the circulating cooling water jacket, the separation strip is of an S-shaped structure, the separation strip comprises a fixed section and an elastic section, and the fixed section is fixedly connected to the inner wall of the circulating cooling water jacket. According to the magnetic isolation device for the submerged arc furnace, the multiple separation strips are arranged in the circulating cooling water jacket, a water flow channel is formed between every two adjacent separation strips, after cooling water is conveyed into the circulating cooling water jacket through the liquid inlet pipe, the cooling water flows along the water flow channels, the water flow direction is stable, the cooling efficiency is improved, and the elastic sections have certain elasticity, so that the cooling efficiency is improved. The water flow swings, the coverage area is enlarged, the cooling uniformity is improved, and the energy consumption of the submerged arc furnace is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of submerged arc furnaces, in particular to a magnetic isolation device for submerged arc furnaces. Background Art

[0002] Traditional submerged arc furnaces use forged copper tiles to transmit electricity to electrodes. Copper tiles have poor cooling effects, so they have high resistance and high power loss during power transmission. Copper tiles are easily burned because they are in direct contact with furnace fire. Copper tiles are easily ignited when electrodes are lowered because they are in direct contact with electrodes. Copper tiles are consumable parts that need to be replaced frequently in submerged arc furnaces. On the one hand, the electrical efficiency is low, and on the other hand, the replacement of copper tiles causes thermal power outages in submerged arc furnaces, resulting in shutdown losses, low production efficiency, and high production costs.

[0003] For example, the patent entitled: Improved Submerged Arc Furnace Electrode Feeding Device (patent application number: CN201620397951.1) discloses an improved submerged arc furnace electrode feeding device. Each circulating cooling water jacket is an independent container, each of which is provided with a water inlet and a water outlet, and copper tubes are respectively connected to the water inlet and the water outlet. The circulating cooling water directly cools the conductive plate, and has a very good cooling effect on the graphite lining that is tightly fitted with the conductive plate, thereby obtaining the optimal conductive temperature. However, since the cooling water enters a large circulation area, when the cooling water enters the circulating cooling water jacket, the water flow direction is disordered, and uneven heat dissipation is prone to occur.

[0004] Therefore, it is necessary to propose a magnetic isolation device for an electric arc furnace to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a magnetic insulation device for an electric arc furnace, so as to solve the problem that the cooling water has a large circulation area, and when the cooling water enters the circulating cooling water jacket, the water flow direction is disordered, which easily leads to uneven heat dissipation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic isolation device for an electric arc furnace, comprising an electrode, circulating cooling water jackets are arranged on both sides of the electrode, a conductive plate is fixedly embedded on the side of the circulating cooling water jacket facing the electrode, the circulating cooling water jacket surrounds the outer side of the conductive plate, a dividing strip is arranged inside the circulating cooling water jacket, the dividing strip is in an S-shaped structure, the dividing strip comprises a fixed section and an elastic section, the fixed section is fixedly connected to the inner wall of the circulating cooling water jacket, and the elastic section is fixedly connected to the fixed section.

[0007] Preferably, the dividing strips are provided in plurality.

[0008] Preferably, a side of the circulating cooling water jacket close to the electrode is fixedly connected to a support seat via a screw, a graphite liner is fixedly installed inside the support seat, and the graphite liner is attached between the conductive plate and the electrode.

[0009] Preferably, a pressure ring is mounted on the outside of the circulating cooling water jacket, and a magnetic isolation plate is fixedly mounted on the pressure ring. Two magnetic isolation plates are provided, and the two magnetic isolation plates are symmetrically distributed about the axis of the pressure ring.

[0010] Preferably, a hydraulic cylinder is fixedly mounted on the pressure ring, an insulating box is fixedly connected to the telescopic end of the hydraulic cylinder, and the insulating box is fixedly mounted on the outer wall of the circulating cooling water jacket.

[0011] Preferably, a liquid inlet pipe is fixedly connected to the outer wall of the circulating cooling water jacket, a liquid inlet groove is opened on the wall of the circulating cooling water jacket, the liquid inlet pipe is connected to the circulating cooling water jacket through the liquid inlet groove, the liquid inlet groove is trapezoidal in shape, and the end away from the liquid inlet pipe has a larger width.

[0012] Preferably, a liquid outlet pipe is fixedly connected to the outer wall of the circulating cooling water jacket, the liquid outlet pipe and the liquid inlet pipe are symmetrically distributed about the axis of the circulating cooling water jacket, a liquid outlet groove is opened on the wall of the circulating cooling water jacket, and the liquid outlet pipe is connected to the circulating cooling water jacket through the liquid outlet groove.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model arranges a plurality of partitions inside the circulating cooling water jacket, and a water flow channel is formed between two adjacent partitions. When the cooling water is transported to the inside of the circulating cooling water jacket by the liquid inlet pipe, the cooling water flows along the water flow channel, and the water flow direction is stable, which improves the cooling efficiency. The elastic section has a certain elasticity, so that the water flow swings, expands the coverage area, improves the uniformity of cooling, and reduces the energy consumption of the ore-fired furnace.

[0015] 2. A magnetic isolation plate is installed on the pressure ring to isolate the magnetic field generated during the operation of the ore-fired furnace, thereby achieving a magnetic isolation effect, thereby reducing resistance and improving electrical efficiency;

[0016] 3. When the telescopic end of the hydraulic cylinder is extended, the circulating cooling water jacket is tightened to hold the graphite lining tightly on the electrode, so that the conductive plate and the graphite lining, and the graphite lining and the electrode are more closely matched. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the structure of the magnetic isolation device of the ore-fired furnace.

[0018] Figure 2 This is a schematic diagram of the structure of the circulating cooling water jacket of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the pressure ring and the magnetic isolation plate of the utility model.

[0020] In the figure: 1. electrode; 2. graphite lining; 3. circulating cooling water jacket; 4. support seat; 5. screw; 6. pressure ring; 7. oil cylinder; 8. magnetic isolation plate; 9. separator; 10. fixed section; 11. elastic section; 12. liquid inlet pipe; 13. liquid inlet tank; 14. liquid outlet pipe; 15. liquid outlet tank; 16. conductive plate; 17. insulating box. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clarify the technical solutions in the embodiments of the utility model; it is completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1 to Figure 3 The magnetic isolation device of the submerged arc furnace shown in the figure comprises an electrode 1, and a circulating cooling water jacket 3 is provided on both sides of the electrode 1. A conductive plate 16 is fixedly embedded on the side of the circulating cooling water jacket 3 facing the electrode 1. The conductive plate 16 can be made of, but not limited to, copper alloy to improve the conductivity. The circulating cooling water jacket 3 surrounds the outer side of the conductive plate 16 to improve the heat dissipation efficiency of the conductive plate 16. The side of the circulating cooling water jacket 3 close to the electrode 1 is fixedly connected to a support seat 4 through a screw 5, and a graphite liner 2 is fixedly installed inside the support seat 4, and the graphite liner 2 is attached between the conductive plate 16 and the electrode 1.

[0023] Specifically, after the submerged arc furnace runs for a certain period, the graphite liner 2 is deformed due to continuous oxidation, and when it cannot be in close contact with the electrode 1, it needs to be replaced. For easy replacement, the support seat 4 is removed, and a new graphite liner 2 is installed on the circulating cooling water jacket 3, and then the support seat 4 is installed on the circulating cooling water jacket 3, and the submerged arc furnace can continue to produce, thereby improving processing efficiency.

[0024] The outer wall of the circulating cooling water jacket 3 is fixedly connected with a liquid inlet pipe 12, and a liquid inlet groove 13 is provided on the wall of the circulating cooling water jacket 3. The liquid inlet pipe 12 is connected with the circulating cooling water jacket 3 through the liquid inlet groove 13. The liquid inlet groove 13 is in a trapezoidal shape, and the width of the end away from the liquid inlet pipe 12 is large. The liquid inlet pipe 12 is connected with the cooling water supply pipeline. Since the liquid inlet groove 13 is in a trapezoidal shape and the width of the end away from the liquid inlet pipe 12 is large, the water flow transported by the liquid inlet pipe 12 to the inside of the circulating cooling water jacket 3 is V-shaped, which is convenient for flowing to different positions.

[0025] A liquid outlet pipe 14 is fixedly connected to the outer wall of the circulating cooling water jacket 3. The liquid outlet pipe 14 and the liquid inlet pipe 12 are symmetrically distributed about the axis of the circulating cooling water jacket 3. A liquid outlet groove 15 is provided on the wall of the circulating cooling water jacket 3. The liquid outlet pipe 14 is connected to the circulating cooling water jacket 3 through the liquid outlet groove 15. The liquid outlet pipe 14 is connected to the suction pipe to realize water circulation inside the circulating cooling water jacket 3. The circulating cooling water directly cools the conductive plate 16 and cools the graphite liner 2 at the same time, thereby obtaining the optimal conductive temperature.

[0026] A partition bar 9 is arranged inside the circulating cooling water jacket 3. The partition bar 9 is arranged in plurality and has an S-shaped structure. The partition bar 9 includes a fixed section 10 and an elastic section 11. The fixed section 10 is fixedly connected to the inner wall of the circulating cooling water jacket 3, and the elastic section 11 is fixedly connected to the fixed section 10.

[0027] Specifically, a plurality of partition bars 9 are arranged inside the circulating cooling water jacket 3, and a water flow channel is formed between two adjacent partition bars 9. When the cooling water is transported to the inside of the circulating cooling water jacket 3 by the liquid inlet pipe 12, the cooling water flows along the water flow channel, and the water flow direction is stable, thereby improving the cooling efficiency. The elastic section 11 has a certain elasticity, so that the water flow swings, expands the coverage area, and improves the uniformity of cooling.

[0028] The outer sleeve of the circulating cooling water jacket 3 is provided with a pressure ring 6, and a magnetic isolation plate 8 is fixedly mounted on the pressure ring 6. Two magnetic isolation plates 8 are provided, and the two magnetic isolation plates 8 are symmetrically distributed about the axis of the pressure ring 6. The pressure ring 6 can be made of, but not limited to, carbon steel, and the magnetic isolation plates 8 can be made of, but not limited to, stainless steel plates. The magnetic isolation plates 8 are provided on the pressure ring 6 to isolate the magnetic field generated during the operation of the submerged arc furnace, to achieve the effect of magnetic isolation, thereby reducing resistance and improving electrical efficiency.

[0029] A hydraulic cylinder 7 is fixedly mounted on the pressure ring 6, and an insulating box 17 is fixedly connected to the telescopic end of the hydraulic cylinder 7, and the insulating box 17 is fixedly mounted on the outer wall of the circulating cooling water jacket 3. When the telescopic end of the hydraulic cylinder 7 is extended, the circulating cooling water jacket 3 is pressed tightly, and the graphite liner 2 is tightly held on the electrode 1, so that the conductive plate 16 and the graphite liner 2, and the graphite liner 2 and the electrode 1 are more closely matched.

Claims

1. A magnetic isolation device for a mineral arc furnace, comprising an electrode (1), characterized in that: A circulating cooling water jacket (3) is provided on both sides of the electrode (1); a conductive plate (16) is fixedly embedded on the side of the circulating cooling water jacket (3) facing the electrode (1); the circulating cooling water jacket (3) surrounds the outer side of the conductive plate (16); a partition bar (9) is provided inside the circulating cooling water jacket (3); the partition bar (9) is in an S-shaped structure; the partition bar (9) comprises a fixed section (10) and an elastic section (11); the fixed section (10) is fixedly connected to the inner wall of the circulating cooling water jacket (3); and the elastic section (11) is fixedly connected to the fixed section (10).

2. The magnetic isolation device for a submerged arc furnace according to claim 1, characterized in that: The dividing strips (9) are arranged in plurality.

3. The magnetic isolation device for a submerged arc furnace according to claim 1, characterized in that: The side of the circulating cooling water jacket (3) close to the electrode (1) is fixedly connected to a support seat (4) via a screw (5); a graphite liner (2) is fixedly installed inside the support seat (4); and the graphite liner (2) is attached between the conductive plate (16) and the electrode (1).

4. The magnetic isolation device for a submerged arc furnace according to claim 1, characterized in that: The circulating cooling water jacket (3) is externally sleeved with a pressure ring (6), and a magnetic isolation plate (8) is fixedly mounted on the pressure ring (6). Two magnetic isolation plates (8) are provided, and the two magnetic isolation plates (8) are symmetrically distributed about the axis of the pressure ring (6).

5. The magnetic isolation device for a submerged arc furnace according to claim 4, characterized in that: A hydraulic cylinder (7) is fixedly mounted on the pressure ring (6), an insulating box (17) is fixedly connected to the telescopic end of the hydraulic cylinder (7), and the insulating box (17) is fixedly mounted on the outer wall of the circulating cooling water jacket (3).

6. The magnetic isolation device for a submerged arc furnace according to claim 1, characterized in that: A liquid inlet pipe (12) is fixedly connected to the outer wall of the circulating cooling water jacket (3), a liquid inlet groove (13) is provided on the wall of the circulating cooling water jacket (3), the liquid inlet pipe (12) is connected to the circulating cooling water jacket (3) via the liquid inlet groove (13), and the liquid inlet groove (13) is in a trapezoidal shape, with a larger width at one end away from the liquid inlet pipe (12).

7. The magnetic isolation device for a submerged arc furnace according to claim 6, characterized in that: A liquid outlet pipe (14) is fixedly connected to the outer wall of the circulating cooling water jacket (3); the liquid outlet pipe (14) and the liquid inlet pipe (12) are symmetrically distributed about the axis of the circulating cooling water jacket (3); a liquid outlet groove (15) is provided on the wall of the circulating cooling water jacket (3); and the liquid outlet pipe (14) is connected to the circulating cooling water jacket (3) via the liquid outlet groove (15).

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