Circulating water device for saving energy of submerged arc furnace

Abstract

The utility model discloses an energy-saving circulating water device for a submerged arc furnace, which belongs to the technical field of submerged arc furnaces and comprises a submerged arc furnace box, a pair of sliding holes are arranged on the inner wall of the upper end of the submerged arc furnace box, a heat insulation cover is slidably connected in the sliding holes, a cooling tank is arranged in the submerged arc furnace box, and the inner end of the cooling tank is fixedly connected with a return pipe. A communicating hole matched with the backflow pipe is formed in the middle of the condensing box, a plurality of heat conduction balls are arranged in the backflow pipe, a heat conduction plate is embedded in the inner end of the communicating hole, and a heat expansion bag is fixedly connected to the upper end of the heat conduction plate; the purpose that the temperature in the submerged arc furnace box is absorbed through the multiple heat conduction balls in the backflow pipe and circulated into the cooling tank can be achieved, so that the temperature in the submerged arc furnace box is maintained, continuous supply of heat is reduced, loss of the heat in the submerged arc furnace box is reduced, and the energy-saving effect of the submerged arc furnace box is improved.

Description

Technical Field

[0001] This utility model relates to the field of submerged arc furnace technology, and more specifically, to a circulating water device for energy saving in submerged arc furnaces. Background Technology

[0002] Submerged arc furnaces, also known as electric furnaces, are a common type of furnace in the metallurgical industry, widely used in the smelting of metals such as iron, steel, and copper. Submerged arc furnaces operate at extremely high temperatures and in very harsh environments; therefore, energy conservation and thermal management are crucial for improving furnace efficiency and reducing energy consumption. In the thermal management system of a submerged arc furnace, the circulating water system plays a vital role. Its main function is to help control the furnace temperature through effective heat exchange, preventing overheating, while also recovering and utilizing some waste heat to reduce energy waste.

[0003] Chinese Patent Announcement No. CN216925185U discloses a waste heat recovery device for circulating water in an industrial silicon submerged arc furnace. This patent uses a circulating pump to deliver high-temperature cooling circulating water to a heat dissipation pipe. The heat dissipation pipe dissipates heat inside the heating chamber, raising its temperature. At this point, the heating chamber can be used for heating. The high-temperature cooling circulating water flows back to the circulating water pipe after passing through the heat dissipation pipe, continuing to cool in the submerged arc furnace and heating itself. This cycle achieves the cooling effect on the submerged arc furnace. At the same time, the high temperature of the cooling circulating water can be used to heat other items in the heating chamber, realizing the utilization of waste heat and avoiding the waste of a large amount of heat energy in the cooling water.

[0004] However, in the aforementioned patent, when circulating water is used for cooling, the water temperature near the heat source is higher than that far from the heat source. This prevents the circulating water from fully absorbing heat for cooling, resulting in low efficiency of the existing circulating water device. Furthermore, most of the heat absorbed by the cooling water is lost, leading to a waste of thermal energy. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide an energy-saving circulating water device for ferroalloy furnaces. This device can absorb the temperature inside the ferroalloy furnace box through multiple heat-conducting balls in the return pipe and circulate it to the cooling tank, thereby maintaining the temperature inside the ferroalloy furnace box. This not only reduces the continued supply of heat but also reduces the loss of heat inside the ferroalloy furnace box, thereby improving the energy-saving effect of the ferroalloy furnace box.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A circulating water device for energy saving in a submerged arc furnace includes a submerged arc furnace box. A pair of sliding holes are formed on the inner wall of the upper end of the furnace box, and a heat-insulating cover is slidably connected within each hole. A cooling tank is formed inside the furnace box, and a return pipe is fixedly connected to the inner end of the cooling tank. A condenser is fixedly connected to the middle of the lower end of the return pipe. A connecting hole matching the return pipe is formed in the middle of the condenser. Multiple heat-conducting balls are arranged inside the return pipe, and a heat-conducting plate is embedded in the inner end of the connecting hole. A thermal expansion bladder is fixedly connected to the upper end of the heat-conducting plate. The multiple heat-conducting balls in the return pipe absorb heat from the furnace box and circulate it to the cooling tank, thereby maintaining the temperature inside the furnace box. This not only reduces the continued supply of heat but also reduces heat loss from the furnace box, thus improving the energy-saving effect of the furnace box.

[0010] Furthermore, a heat-conducting frame is fixedly connected to the inner wall of the connecting hole, and the heat-conducting frame is fixedly connected to the heat-conducting plate. The heat-conducting frame can better conduct the heat of the heat-conducting balls and the heat in the circulating water to the heat-conducting plate, so that the heat-conducting plate conducts the heat to the thermal expansion bladder, which expands and bulges out to block multiple heat-conducting balls at the bottom of the electric arc furnace box, and continuously maintains the heat of the heat-conducting balls in the cooling tank, so as to maintain the temperature inside the electric arc furnace box and achieve the effect of energy saving and heat preservation.

[0011] Furthermore, a limiting groove is provided at the upper end of the heat insulation cover, and an auxiliary block is slidably connected to the inner end of the limiting groove. The auxiliary block is fixedly connected to the inner wall of the sliding hole. A pull handle is fixedly connected to the opposite end of each pair of heat insulation covers. By pulling the pull handle, the heat insulation cover is opened, and the auxiliary block is used to slide along the limiting groove to limit the heat insulation cover, so as to prevent the heat insulation cover from falling out of the sliding hole.

[0012] Furthermore, a reset spring is provided in the limiting groove, and the reset spring is fixedly connected between the auxiliary block and the inner wall of the limiting groove. The reset spring can make a pair of heat preservation covers press against each other under its elastic force to reduce the outflow of heat.

[0013] Furthermore, sealing grooves are provided on both the front and rear inner walls of the electric arc furnace box. A sealing plate is slidably connected in the sealing groove, and the sealing plate is fixedly connected to the heat insulation cover. By sliding the sealing plate along the sealing groove, it can not only play a limiting and guiding role, but also seal the heat insulation cover and the inner wall of the electric arc furnace box to prevent heat from escaping from the electric arc furnace box.

[0014] Furthermore, the heat-conducting ball is a hollow heat storage ball. The hollow heat-conducting ball can float in the circulating water, which not only allows the circulating water to play a sufficient cooling role, but also allows the heat-conducting ball to absorb heat from the circulating water and continuously supply it to the cooling tank to maintain the temperature inside the electric arc furnace box.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This scheme can absorb the temperature inside the electric arc furnace box through multiple heat-conducting balls in the return pipe and provide it to the cooling tank, thereby maintaining the temperature inside the electric arc furnace box. This not only reduces the continued supply of heat, but also reduces the loss of heat inside the electric arc furnace box, thereby improving the energy-saving effect of the electric arc furnace box.

[0018] (2) In this scheme, a heat-conducting frame is fixedly connected to the inner wall of the connecting hole, and the heat-conducting frame is fixedly connected to the heat-conducting plate. The heat-conducting frame can better conduct the heat of the heat-conducting balls and the heat in the circulating water to the heat-conducting plate, so that the heat-conducting plate conducts the heat to the thermal expansion bladder to expand and bulge, blocking multiple heat-conducting balls at the bottom of the electric arc furnace box, and continuously maintaining the heat of the heat-conducting balls in the cooling tank, so as to maintain the temperature inside the electric arc furnace box, thereby achieving the effect of energy saving and heat preservation.

[0019] (3) In this scheme, a limiting groove is opened at the upper end of the heat insulation cover, and an auxiliary block is slidably connected to the inner end of the limiting groove. The auxiliary block is fixedly connected to the inner wall of the sliding hole. A pair of heat insulation covers are fixedly connected to a handle at one end away from each other. The heat insulation cover is opened by pulling the handle, and the auxiliary block is used to slide along the limiting groove to limit the heat insulation cover to prevent the heat insulation cover from falling out of the sliding hole.

[0020] (4) In this scheme, a reset spring is provided in the limiting groove, and the reset spring is fixedly connected between the auxiliary block and the inner wall of the limiting groove. The reset spring can make a pair of heat preservation covers press against each other under its elastic force to reduce the outflow of heat.

[0021] (5) In this scheme, sealing grooves are provided on the front and rear inner walls of the electric arc furnace box. A sealing plate is slidably connected in the sealing groove, and the sealing plate is fixedly connected to the heat insulation cover. By sliding the sealing plate along the sealing groove, it can not only play a limiting and guiding role, but also seal the heat insulation cover and the inner wall of the electric arc furnace box to prevent heat from overflowing from the electric arc furnace box.

[0022] (6) In this scheme, the heat-conducting ball is a hollow heat storage ball. The hollow heat-conducting ball can float in the circulating water, which not only allows the circulating water to play a full cooling role, but also allows the heat-conducting ball to absorb the heat in the circulating water and continuously supply it to the cooling tank to maintain the temperature inside the electric arc furnace box. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a front cross-sectional view of the structure of this utility model;

[0025] Figure 3 This is a front cross-sectional view of the condenser box in this utility model.

[0026] Explanation of the labels in the diagram:

[0027] 1. Submerged arc furnace box; 2. Insulation cover; 3. Cooling tank; 4. Return pipe; 5. Condensation box; 6. Connecting hole; 7. Heat-conducting ball; 8. Heat-conducting plate; 9. Thermal expansion bladder; 10. Heat-conducting frame; 11. Limiting groove; 12. Return spring; 13. Auxiliary block; 14. Pull handle; 15. Edge sealing groove; 16. Edge sealing plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1:

[0032] Please see Figure 1-3A circulating water device for energy saving in a submerged arc furnace includes a submerged arc furnace box 1. A pair of sliding holes are formed on the inner wall of the upper end of the submerged arc furnace box 1, and an insulation cover 2 is slidably connected within the sliding holes. A cooling tank 3 is formed inside the submerged arc furnace box 1, and a return pipe 4 is fixedly connected to the inner end of the cooling tank 3. A condensation box 5 is fixedly connected to the middle of the lower end of the return pipe 4. A connecting hole 6 matching the return pipe 4 is formed in the middle of the condensation box 5. Multiple heat-conducting balls 7 are provided inside the return pipe 4, and a heat-conducting plate 8 is embedded in the inner end of the connecting hole 6. A thermal expansion bladder 9 is fixedly connected to the upper end of the heat-conducting plate 8. The multiple heat-conducting balls 7 in the return pipe 4 absorb the heat inside the submerged arc furnace box 1 and circulate it to the cooling tank 3, thereby maintaining the temperature inside the submerged arc furnace box 1. This not only reduces the continued supply of heat but also reduces the loss of heat inside the submerged arc furnace box 1, thus improving the energy-saving effect of the submerged arc furnace box 1.

[0033] A heat-conducting frame 10 is fixedly connected to the inner wall of the connecting hole 6, and the heat-conducting frame 10 is fixedly connected to the heat-conducting plate 8. The heat-conducting frame 10 can better conduct the heat of the heat-conducting balls 7 and the heat in the circulating water to the heat-conducting plate 8, so that the heat-conducting plate 8 conducts the heat to the thermal expansion bladder 9 to expand and bulge, blocking multiple heat-conducting balls 7 at the bottom of the electric arc furnace box 1, and continuously maintaining the heat of the heat-conducting balls 7 in the cooling tank 3, so as to maintain the temperature inside the electric arc furnace box 1, thereby achieving the effect of energy saving and heat preservation.

[0034] The upper end of the heat insulation cover 2 is provided with a limiting groove 11. An auxiliary block 13 is slidably connected to the inner end of the limiting groove 11, and the auxiliary block 13 is fixedly connected to the inner wall of the sliding hole. A pull handle 14 is fixedly connected to one end of each pair of heat insulation covers 2 away from each other. By pulling the pull handle 14, the heat insulation cover 2 is opened, and the auxiliary block 13 is used to slide along the limiting groove 11 to limit the heat insulation cover 2, so as to prevent the heat insulation cover 2 from falling out of the sliding hole.

[0035] A reset spring 12 is provided in the limiting groove 11, and the reset spring 12 is fixedly connected between the auxiliary block 13 and the inner wall of the limiting groove 11. The reset spring 12 can make a pair of heat preservation covers 2 press against each other under its elastic force to reduce the outflow of heat.

[0036] The front and rear inner walls of the electric arc furnace box 1 are provided with sealing grooves 15. A sealing plate 16 is slidably connected in the sealing groove 15 and the sealing plate 16 is fixedly connected to the heat insulation cover 2. The sealing plate 16 slides along the sealing groove 15, which can not only play a limiting and guiding role, but also seal the heat insulation cover 2 and the inner wall of the electric arc furnace box 1 to prevent heat from escaping from the electric arc furnace box 1.

[0037] The heat-conducting ball 7 is a hollow heat storage ball. The hollow heat-conducting ball 7 can float in the circulating water, which not only allows the circulating water to play a full cooling role, but also allows the heat-conducting ball 7 to absorb the heat in the circulating water and continuously supply it to the cooling tank 3 to maintain the temperature inside the electric arc furnace box 1.

[0038] When using it, please refer to Figure 1-3The temperature inside the ferroalloy furnace box 1 is cooled and controlled by circulating water in the return pipe 4 and multiple heat-conducting balls 7. When the temperature is too high, the heat-conducting frame 10 conducts heat to the heat-conducting plate 8, which in turn conducts heat to the thermal expansion bladder 9, causing it to expand and bulge, reducing the inner diameter of the connecting hole 6. This prevents the heat-conducting balls 7 from passing through, causing multiple heat-conducting balls 7 to accumulate at the bottom of the ferroalloy furnace box 1. The heat stored in the heat-conducting balls 7 continuously heats the ferroalloy furnace box 1 until the temperature of the heat-conducting balls 7 and the circulating water decreases, allowing the thermal expansion bladder 9 to recover. This allows multiple heat-conducting balls 7 to continuously circulate and float in the return pipe 4. Compared with the traditional circulating water device for energy saving in ferroalloy furnaces, this utility model can achieve the purpose of absorbing the temperature inside the ferroalloy furnace box 1 and circulating it to the cooling tank 3 through multiple heat-conducting balls 7 in the return pipe 4, thereby maintaining the temperature inside the ferroalloy furnace box 1. This not only reduces the continued supply of heat but also reduces the loss of heat inside the ferroalloy furnace box 1, thereby improving the energy-saving effect of the ferroalloy furnace box 1.

[0039] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A circulating water device for energy saving of an electric arc furnace, comprising an electric arc furnace tank (1), characterized in that: The upper inner wall of the electric arc furnace box (1) is provided with a pair of sliding holes, and a heat insulation cover (2) is slidably connected in the sliding holes. The electric arc furnace box (1) is provided with a cooling tank (3), and a return pipe (4) is fixedly connected to the inner end of the cooling tank (3). A condenser box (5) is fixedly connected to the middle of the lower end of the return pipe (4). A connecting hole (6) matching the return pipe (4) is provided in the middle of the condenser box (5). Multiple heat-conducting balls (7) are provided in the return pipe (4). A heat-conducting plate (8) is embedded in the inner end of the connecting hole (6). A thermal expansion bladder (9) is fixedly connected to the upper end of the heat-conducting plate (8).

2. The circulating water device for energy saving of an ore smelting furnace according to claim 1, characterized in that: A heat-conducting frame (10) is fixedly connected to the inner wall of the connecting hole (6), and the heat-conducting frame (10) is fixedly connected to the heat-conducting plate (8).

3. The circulating water device for energy saving of an ore smelting furnace according to claim 1, characterized in that: The upper end of the heat insulation cover (2) is provided with a limiting groove (11), and an auxiliary block (13) is slidably connected to the inner end of the limiting groove (11). The auxiliary block (13) is fixedly connected to the inner wall of the sliding hole. A pull handle (14) is fixedly connected to one end of each pair of heat insulation covers (2) away from each other.

4. The circulating water device for energy saving of an ore smelting furnace according to claim 3, characterized in that: The limiting groove (11) is provided with a reset spring (12), and the reset spring (12) is fixedly connected between the auxiliary block (13) and the inner wall of the limiting groove (11).

5. The circulating water device for energy saving of an ore smelting furnace according to claim 1, characterized in that: The front and rear inner walls of the electric arc furnace box (1) are provided with sealing grooves (15), and sealing plates (16) are slidably connected in the sealing grooves (15), and the sealing plates (16) are fixedly connected to the heat insulation cover (2).

6. The circulating water device for energy saving of an ore smelting furnace according to claim 1, characterized in that: The heat-conducting ball (7) is a hollow heat storage ball.

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