A heat dissipation device for a furnace shell of an electric arc furnace

Abstract

The utility model relates to the technical field of furnace shell heat dissipation, specifically for a kind of heat dissipation device for ore-heating furnace furnace shell, applied to furnace shell, including the heat dissipation mechanism being arranged on furnace shell, furnace shell includes furnace bottom plate, the furnace body being arranged on furnace bottom plate, the furnace edge being arranged on furnace body;Furnace body is equidistantly provided with multiple groups of heat dissipation fin groups extending to furnace edge along its circumference, and heat dissipation mechanism includes the air supply system being arranged on furnace bottom plate and the exhaust system being arranged on furnace edge;Air supply system and exhaust system are used in cooperation and all act on heat dissipation fin group. By setting air supply system and exhaust system cooperation in heat dissipation fin group, form the directional convection airflow of " lower in upper out", accelerate the air flow of heat dissipation fin surface and gap, intensify heat exchange efficiency. Compared with traditional natural heat dissipation, the heat dissipation speed of furnace shell is accelerated, the temperature of furnace shell can be quickly reduced, the stability and service life of furnace body structure are guaranteed. Heat dissipation fin group is composed of multiple wave-shaped heat dissipation fins, solve the problem of limited heat dissipation area of traditional flat heat dissipation fin.

Description

Technical Field

[0001] This utility model relates to the field of furnace shell heat dissipation technology, specifically a heat dissipation device for the furnace shell of a submerged arc furnace. Background Technology

[0002] During the operation of an electric arc furnace, the furnace shell, as a key component supporting and protecting the internal structure, continuously absorbs heat due to the high-temperature environment inside the furnace, causing its own temperature to rise continuously. Traditional methods of heat dissipation for electric arc furnace shells mostly rely on natural heat dissipation from the furnace surface or simple heat sink structures, but these methods have the following problems: 1. The natural heat dissipation efficiency is low. Especially when the electric arc furnace is running at high load for a long time, the heat of the furnace shell is difficult to dissipate quickly, which can easily lead to excessively high furnace shell temperature, affecting the stability and service life of the furnace structure, and may even cause safety hazards.

[0003] 2. Existing heat sink structures are mostly flat, with limited heat dissipation area, and slow airflow between heat sinks, resulting in insufficient heat exchange and failing to meet the requirements for efficient heat dissipation.

[0004] 3. The lack of a targeted forced convection cooling mechanism makes it difficult to adapt to the heat dissipation requirements of the furnace shell under different operating conditions by relying on a single heat dissipation method. When the furnace body temperature fluctuates greatly, the heat dissipation effect is unstable and it is difficult to effectively control the furnace shell temperature within a reasonable range. Utility Model Content

[0005] The purpose of this invention is to provide a heat dissipation device for the shell of a submerged arc furnace, which solves the problem of low efficiency in existing heat dissipation methods for submerged arc furnace shells mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation device for a submerged arc furnace shell, applied to the furnace shell, comprising a heat dissipation mechanism disposed on the furnace shell, the furnace shell comprising a furnace bottom plate, a furnace body disposed on the furnace bottom plate, and a furnace edge disposed on the furnace body; the furnace body is provided with multiple sets of heat dissipation fins extending to the furnace edge at equal intervals along its circumference; the heat dissipation mechanism comprises an air supply system disposed on the furnace bottom plate and an exhaust system disposed on the furnace edge; the air supply system and the exhaust system are used in conjunction and both act on the heat dissipation mechanism. The heat sink assembly consists of multiple corrugated heat sinks; the air supply system includes multiple mounting seats equidistantly arranged along the circumference of the furnace bottom plate, a fan mounted on the mounting seat, an air collecting hood mounted on the air outlet of the fan, and a fan-shaped air outlet plate slidably mounted on the furnace bottom plate and connected to the air collecting hood via a flexible hose, with multiple air outlets equidistantly arranged on the air outlet plate; the exhaust system includes a guide tube detachably connected to the furnace side and an exhaust hood (12) slidably mounted vertically inside the guide tube, with an air outlet pipe on the exhaust hood.

[0007] Furthermore, a limiting block is provided at the bottom of the air outlet plate, and a set screw is provided on the limiting block.

[0008] Furthermore, a T-shaped heat dissipation support plate is provided at the bottom of the furnace bottom plate.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: The heat dissipation device for the shell of a submerged arc furnace provided by this utility model has the following specific beneficial effects: 1. Improved heat dissipation efficiency: By coordinating the air supply and exhaust systems for the heat sink assembly, a directional convection airflow of "bottom in, top out" is formed, accelerating airflow across the surface and gaps of the heat sink and enhancing heat exchange efficiency. Compared to traditional natural heat dissipation, this accelerates the dissipation of heat from the furnace shell, rapidly reducing the furnace shell temperature and ensuring the stability and service life of the furnace structure.

[0010] 2. Increased heat dissipation area: The heat sink assembly is composed of multiple corrugated heat sinks. The S-shaped structure greatly increases the contact area between the heat sink and the air in the same space, improves the efficiency of heat transfer, and solves the problem of limited heat dissipation area of ​​traditional flat heat sinks.

[0011] 3. Adaptability to different operating conditions: The fan-shaped air outlet of the air supply system can be adjusted by sliding to ensure that the gap between the air outlet and the heat sink is aligned; the exhaust hood of the exhaust system can slide vertically along the guide tube to adapt to changes in the height of the heat sink assembly. This adjustability allows the heat dissipation device to be flexibly adjusted according to the heat dissipation requirements of the furnace shell under different operating conditions, ensuring the stability of the heat dissipation effect and effectively controlling the furnace shell temperature within a reasonable range.

[0012] 4. Auxiliary heat dissipation supplement: The T-shaped heat dissipation support plate at the bottom of the furnace bottom plate not only enhances the stability of the furnace body, but also helps to absorb and dissipate the heat of the furnace bottom plate by increasing the contact area with the air, further improving the overall heat dissipation effect of the furnace shell and reducing safety hazards. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the present utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a partially enlarged view of the present utility model; Figure 4 This is a structural diagram of the furnace shell of this utility model.

[0014] In the picture: 1. Furnace bottom plate; 2. Furnace body; 3. Furnace edge; 4. Heat sink; 5. Mounting base; 6. Fan; 7. Air collection hood; 8. Air outlet plate; 9. Limiting block; 10. Top screw; 11. Flow guide tube; 12. Exhaust hood; 13. Air outlet pipe; 14. Heat dissipation support plate. Detailed Implementation

[0015] Combination Figures 1 to 4 This utility model discloses a heat dissipation device for the furnace shell of a submerged arc furnace. The device is applied to the furnace shell and includes a heat dissipation mechanism installed on the furnace shell. The device enhances the heat exchange efficiency of the heat dissipation fin assembly by cooperating with the air supply system and exhaust system contained in the heat dissipation mechanism, thereby achieving efficient cooling of the furnace shell of the submerged arc furnace.

[0016] Specifically, The furnace shell consists of a furnace bottom plate 1, a furnace body 2, and a furnace side 3, which are welded together to form an integral structure. Multiple sets of heat dissipation fins are welded equidistantly along the circumference of the furnace body 2. Each set of heat dissipation fins contains 10-15 corrugated heat dissipation fins 4, made of 304 stainless steel with a thickness of 3mm. The spacing between adjacent heat dissipation fins is 5cm, and the top of each fin extends to the bottom of the furnace side 3, forming a heat dissipation channel running through the side of the furnace body. A support plate 14 with heat dissipation fins is bolted to the bottom of the furnace bottom plate 1. The support plate 14 is T-shaped and made of cast iron, which enhances the stability of the furnace body and expands the contact area with air through the bottom fins, thus aiding in heat dissipation.

[0017] Air supply system installation: Multiple mounting bases 5 are welded at equal intervals along the circumference of the furnace bottom plate 1. Each mounting base is bolted with a fan 6 (specifically an axial flow fan, power 500W, air volume 1500m³ / h). The fan outlet is connected to an air collection hood 7 via a flange. The air collection hood 7 adopts a conical structure (diameter gradually narrows from 20cm to 10cm) to reduce air resistance. The outlet of the air collection hood 7 is connected to a fan-shaped air outlet plate 8 via a high-temperature resistant flexible hose (temperature resistance ≥150℃). A T-shaped slider is welded to the bottom of the air outlet plate 8. The slider slides in contact with a T-shaped groove on the surface of the furnace bottom plate 1, and the two sides of the slider extend outward to form limiting blocks 9. The position of the air outlet plate 8 can be fixed by tightening the set screws 10 on the limiting blocks 9. Multiple air outlets (diameter 8cm, the specific number is determined according to the number of heat sinks) are equally spaced along the length of the air outlet plate, and the air outlets face the bottom gap of the heat sink assembly.

[0018] Exhaust system installation: A guide cylinder 11 (made of bent stainless steel plate, with its ends fixed by bolts) is detachably connected to furnace side 3 via bolts. The guide cylinder 11 is cylindrical (30cm in diameter) with vertical slide rails on its inner wall. The exhaust hood 12 is slidably connected to the guide cylinder via the slide rails. The position of the exhaust hood 12 can be adjusted according to the height of the heat sink assembly (adjustment range 0-50cm). After adjustment, its position is fixed by bolts, and the installation position of the exhaust hood 12 must not affect the normal use of the electrodes. The exhaust hood 12 adopts a trumpet-shaped structure (inlet diameter 40cm), and the outlet is connected to the exhaust pipe 13 via a pipe. The exhaust pipe 13 is then connected to the factory's exhaust duct (or directly discharged to the outdoor high altitude). The exhaust power is provided by an induced draft fan at the end of the duct (power 800W, air pressure 200Pa).

[0019] Working principle and process of this utility model: I. Working Principle This invention utilizes the synergistic effect of the air supply and exhaust systems to enhance the airflow velocity of the heat dissipation fins on the furnace surface, accelerating heat transfer and achieving efficient cooling of the submerged arc furnace shell. The specific principle is as follows: 1. Basic heat dissipation of the heat sink assembly: Multiple sets of wave-shaped heat sinks 4 arranged circumferentially in the furnace body 2 are in direct contact with the furnace shell, absorbing the heat of the furnace body 2 through heat conduction and expanding the heat dissipation area.

[0020] 2. Forced convection enhances heat dissipation: The air supply system forces cold air into the heat sink from the bottom, while the exhaust system draws hot air from the top, forming a directional airflow channel to accelerate heat exchange on the surface of the heat sink.

[0021] 3. Auxiliary heat dissipation supplement: The T-shaped heat dissipation support plate 14 at the bottom of the furnace bottom plate 1 increases the contact area with the air, which helps to absorb the heat of the furnace bottom plate and further reduces the overall temperature of the furnace shell.

[0022] II. Work Process 1. Equipment Start-up and Airflow Formation: The blower 6 of the air supply system is started. Cold air is gathered by the air collector hood and then delivered through a flexible hose to the fan-shaped air outlet plate 8. From there, multiple air outlets on the air outlet plate 8 blow the air directionally towards the gaps at the bottom of the heat sink assembly. Simultaneously, the exhaust fan at the end of the exhaust system is started. The exhaust hood 12 draws hot air from the top of the heat sink assembly, collects it through the exhaust pipe 13, and then discharges it (connecting to the factory's exhaust duct or high-altitude discharge). The blowing and exhaust create a "bottom-in, top-out" convective airflow that rapidly flows over the surface and gaps of the corrugated heat sink 4.

[0023] 2. Heat transfer and cooling: The heat of the furnace body 2 is transferred to the wave-shaped heat sink 4 through heat conduction, which raises the temperature of the heat sink 4; when the cold air flows through the heat sink 4, it exchanges heat with the high-temperature heat sink, absorbs heat and becomes hot air, and is discharged by the exhaust system; the continuous airflow circulation causes the temperature of the heat sink 4 to continuously decrease, which in turn reduces the temperature of the furnace body 2 and the furnace shell as a whole through heat conduction.

[0024] 3. Adaptive adjustment: If the air blowing position needs to be adjusted, the top screw 10 of the bottom limit block 9 of the air outlet plate 8 can be loosened, the T-shaped slider can be slid to change the position of the air outlet plate 8, and then the top screw 10 can be tightened to fix it, ensuring that the gap between the air outlet and the heat sink 4 is aligned; if the height of the heat sink assembly changes, the height of the exhaust hood 12 can be adjusted by the vertical slide rail in the guide tube 11, and then fixed with bolts after adjustment to ensure that the exhaust hood 12 is always aligned with the top of the heat sink assembly and does not affect the operation of the electrodes.

[0025] 4. Assisted heat dissipation: The heat from the furnace bottom plate 1 is partially transferred to the T-shaped heat dissipation support plate 14 at the bottom. The heat dissipation support plate 14 uses surface fins to naturally convect with the surrounding air, which helps to dissipate excess heat and further ensures the stable operation of the furnace shell at low temperature.

[0026] Through the above process, this device can significantly improve the heat dissipation efficiency of the furnace shell of the electric arc furnace, avoiding equipment damage or safety hazards caused by excessive furnace shell temperature.

Claims

1. A heat dissipation device for a submerged arc furnace shell, applied to the furnace shell, comprising a heat dissipation mechanism disposed on the furnace shell, the furnace shell comprising a furnace bottom plate (1), a furnace body (2) disposed on the furnace bottom plate (1), and a furnace edge (3) disposed on the furnace body (2); the furnace body (2) is provided with multiple sets of heat dissipation fins extending to the furnace edge (3) at equal intervals along its circumference, characterized in that, The heat dissipation mechanism includes an air supply system on the furnace bottom plate (1) and an exhaust system on the furnace side (3); the air supply system and the exhaust system are used together and both act on the heat sink assembly, which is composed of multiple corrugated heat sinks (4); the air supply system includes multiple mounting seats (5) arranged equidistantly along the circumference of the furnace bottom plate (1), a fan (6) on the mounting seat (5), an air collecting hood (7) at the air outlet of the fan (6), and a fan-shaped air outlet plate (8) slidably mounted on the furnace bottom plate (1) and connected to the air collecting hood (7) via a flexible hose, with multiple air outlets equidistantly provided on the air outlet plate (8); the exhaust system includes a guide tube (11) detachably connected to the furnace side (3) and an exhaust hood (12) slidably mounted in the guide tube (11), with an air outlet pipe (13) provided on the exhaust hood (12).

2. The heat dissipation device as described in claim 1, characterized in that, The bottom of the air outlet plate (8) is provided with a limiting block (9), and the limiting block (9) is provided with a top screw (10).

3. The heat dissipation device as described in claim 1, characterized in that, The bottom of the furnace bottom plate (1) is provided with a T-shaped heat dissipation support plate (14).

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