Annealing furnace for low-carbon cold-rolled steel sheet

Abstract

The utility model relates to an annealing furnace for a low-carbon cold-rolled steel sheet, which belongs to the technical field of annealing furnaces and comprises an annealing furnace body, the top of the annealing furnace body is fixedly connected with a water storage tank, and two multi-row heat conduction pipes are fixedly connected in the water storage tank. The low-carbon cold-roll steel sheet has the advantages that the contact area between the multiple rows of heat conduction pipes and cold water can be increased through the arrangement of the multiple rows of bent pipes of the multiple rows of heat conduction pipes, water in the water storage tank is boiled rapidly, the heat conversion rate of heat energy dissipated by the low-carbon cold-roll steel sheet body can be improved through the arrangement of the heat conduction gaskets and the copper-aluminum alloy materials, and the heat conduction efficiency is improved. And when the heat passes through the multiple rows of heat conduction pipes, cold water in the water storage tank exchanges heat with the heat to reduce the temperature of the heat, so that the temperature of the heat in the annealing furnace body can be gradually reduced, the heat on the surface of the low-carbon cold-rolled steel sheet is gradually reduced, and the service life of the low-carbon cold-rolled steel sheet is prolonged. Therefore, the production quality of the low-carbon cold-rolled steel plate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to an annealing furnace for low-carbon cold-rolled steel plates. Background Art

[0002] Heat treatment after cold rolling is an important process in cold rolling production. Cold rolled sheets are mostly low carbon steel sheets, and their heat treatment after rolling is usually recrystallization annealing. Cold rolled sheets undergo recrystallization annealing to reduce the hardness of steel, eliminate cold work hardening, improve the performance of steel, restore the plastic deformation capacity of steel, eliminate residual stress, stabilize the size, reduce deformation and crack tendency, refine grains, adjust the organization, and eliminate organizational defects. The recrystallization annealing of cold rolled sheets is carried out in an annealing furnace.

[0003] After searching, a Chinese patent discloses a cold rolling annealing furnace with heat insulation protection (authorization announcement number CN213232379U), including a casing, a plurality of rollers are rotatably installed in the casing, a plurality of lifting devices are fixedly installed on the top of the casing, a telescopic motor of the lifting device, the telescopic motor is connected with a fixed block, a transmission shaft is rotatably connected between the fixed blocks, a motor is connected to one side of the fixed block, the motor is connected to the transmission shaft through the fixed block, a sliding door is slidably connected at the entrance of the casing, a heat insulation rubber pad is connected and installed at the outlet of the casing, two pipes are connected to the top of the casing, one end of the pipe is connected to a cooling chamber, a condensation plate is fixedly installed on the top inner wall of the cooling chamber, and exhaust fans are installed on both sides of the condensation plate on the top inner wall of the cooling chamber. The utility model can prevent heat dissipation and play a heat insulation effect, and at the same time, the excess heat can be cooled to prevent the annealing furnace from being too high. Although the patent technology can.

[0004] However, the above device still has some shortcomings in actual use. The most obvious one is that the temperature in the existing low-carbon steel plate cold rolling annealing furnace is relatively high, which will release a large amount of heat energy to the workshop, but it cannot be effectively utilized, which easily leads to waste of heat energy. In addition, the above-mentioned annealing operation of the low-carbon steel plate is quickly completed by the exhaust fan. This method causes the annealing furnace to lose a lot of heat at once, which easily causes the heat loss on the surface of the low-carbon cold-rolled steel plate to be fast, which in turn affects the production quality of the low-carbon cold-rolled steel plate. Utility Model Content

[0005] In view of the existing problems in the prior art: the temperature in the existing cold rolling annealing furnace for low carbon steel plates is relatively high, which will release a large amount of heat energy to the workshop, but it cannot be effectively utilized, which easily leads to a waste of heat energy, and the above-mentioned annealing operation of the low carbon steel plate is quickly completed by the exhaust fan. This method causes the annealing furnace to lose a lot of heat at once, which easily causes the heat loss on the surface of the low carbon cold rolled steel plate to be fast, thereby affecting the production quality of the low carbon cold rolled steel plate. The main purpose of the utility model is to provide an annealing furnace for low carbon cold rolled steel plates.

[0006] The technical solution of the utility model is as follows: an annealing furnace for low-carbon cold-rolled steel plates, comprising an annealing furnace body, the top of the annealing furnace body is fixedly connected to a water storage tank, the interior of the water storage tank is fixedly connected to two multiple rows of heat-conducting pipes, the multiple rows of heat-conducting pipes are made of copper-aluminum alloy, the tops of the inner walls of the multiple rows of heat-conducting pipes are evenly fixedly installed with mounting rings, the interiors of the mounting rings are fixedly installed with fans, the inner walls of the multiple rows of heat-conducting pipes and on both sides of the mounting rings are evenly fixedly connected with thermal conductive gaskets, one end of the top of the water storage tank is fixedly connected to a water inlet hopper, one side of the water storage tank is fixedly connected to a drainage box, and the end of the drainage box away from the water storage tank is fixedly connected to a drainage pipe.

[0007] By adopting the above technical scheme, through the arrangement of multiple rows of bent tube shapes of multiple rows of heat pipes, the contact area between the multiple rows of heat pipes and the cold water can be increased, so that the water in the water tank boils quickly, and through the arrangement of thermal gaskets and copper-aluminum alloy materials, the heat conversion rate of the heat energy dissipated by the low-carbon cold-rolled steel plate body can be improved, so that the heat energy can be effectively utilized and the waste of heat energy can be avoided.

[0008] As a preferred embodiment, a transmission mechanism is equidistantly arranged at the top of the inner wall of the annealing furnace body, and the transmission mechanism includes two telescopic motors fixedly connected to the top of the inner wall of the annealing furnace body, and the bottom ends of the piston rods of the telescopic motors are fixedly connected to support blocks, and transmission rollers are rotatably installed between the two support blocks, and a servo motor is fixedly installed on the outer side of one of the support blocks, and the output shaft of the servo motor is fixedly connected to the central axis of the corresponding transmission roller.

[0009] By adopting the above technical solution, the outer side of the transmission roller is in contact with the top of the low-carbon cold-rolled steel plate and is used in conjunction with the rotating roller. When the output shaft of the servo motor rotates, it can drive the rotation of the transmission roller, thereby allowing the low-carbon cold-rolled steel plate to move forward step by step.

[0010] As a preferred embodiment, an inlet groove is provided on one side of the annealing furnace body, an outlet groove is provided on the other side of the annealing furnace body, a accommodating cavity is provided inside the annealing furnace body and above the inlet groove, a sliding door is slidably connected inside the accommodating cavity, two electric telescopic rods are fixedly installed at one end of the top of the annealing furnace body, and the piston rods of the electric telescopic rods extend to the inside of the accommodating cavity and are fixedly connected to the sliding door.

[0011] By adopting the above technical solution, the sliding door is driven to be stored in the accommodating cavity through the extension and retraction of the piston rod of the electric telescopic rod, thereby facilitating the low-carbon cold-rolled steel plate to enter the annealing furnace body for annealing operation.

[0012] As a preferred embodiment, rotating rollers are equidistantly installed at the bottom end of the inner wall of the annealing furnace body, a low-carbon cold-rolled steel plate body is arranged between the tops of the plurality of rotating rollers, and the inner walls of the multiple rows of heat pipes are coated with carbon nanotube thermal conductive coating.

[0013] By adopting the above technical solution and setting the carbon nanotube thermal conductive coating, the heat exchange rate between thermal energy and cold water can be improved.

[0014] As a preferred embodiment, a closed door is provided inside the outlet slot, the closed door is rotatably connected to the inner wall of the outlet slot via a hinge, and a handle is fixedly connected to the outer side of the closed door.

[0015] By adopting the above technical solution and setting a closed door, the dissipation of heat energy can be reduced.

[0016] As a preferred embodiment, one end of the multiple rows of heat-conducting pipes is perpendicular to the ground, and the other end of the multiple rows of heat-conducting pipes is toward the inlet groove, and a visual glass is provided on the outside of the water storage tank.

[0017] By adopting the above technical solution and providing the visual glass, the staff can clearly see the boiling situation of the cold water in the water storage tank.

[0018] As a preferred implementation, a valve is provided on the outside of the drain pipe, and the servo motor, telescopic motor, electric telescopic rod and fan are all electrically connected to an external control device.

[0019] By adopting the above technical solution, the servo motor, the telescopic motor, the electric telescopic rod and the fan can be started by controlling the external control device.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] 1. In the utility model, cold water can be loaded into the water storage tank through the setting of the water inlet bucket, and the high-temperature low-carbon cold-rolled steel plate body can be sent into the annealing furnace body. At this time, the fan is started to absorb the heat energy dissipated by the low-carbon cold-rolled steel plate body into the interior of the multiple rows of heat-conducting pipes. The multiple rows of curved pipe shapes of the multiple rows of heat-conducting pipes can increase the contact area between the multiple rows of heat-conducting pipes and the cold water, so that the water in the water storage tank boils quickly. The heat conversion rate of the heat energy dissipated by the low-carbon cold-rolled steel plate body can be improved through the setting of the heat-conducting gasket and the copper-aluminum alloy material. In this way, thermal energy can be effectively utilized to avoid waste of thermal energy. After the thermal energy is absorbed from one end of the multiple rows of heat pipes, it will come out from the other end of the multiple rows of heat pipes, forming a virtuous cycle, rather than directly extracting the thermal energy at once. When the heat passes through the multiple rows of heat pipes, the cold water in the water storage tank will exchange heat with the heat, lowering the temperature of the thermal energy, so that the thermal energy temperature in the annealing furnace body can be gradually reduced, so that the heat on the surface of the low-carbon cold-rolled steel plate is gradually reduced, thereby ensuring the production quality of the low-carbon cold-rolled steel plate.

[0022] 2. In the utility model, the height of the transmission roller and the support block can be adjusted by extending and retracting the piston rod of the telescopic motor, so as to adapt to the use of low-carbon cold-rolled steel plates of different widths, so that the outer side of the transmission roller is in conflict with the top of the low-carbon cold-rolled steel plate, and is used in conjunction with the rotating roller. When the output shaft of the servo motor rotates, it can drive the rotation of the transmission roller, thereby allowing the low-carbon cold-rolled steel plate to move forward step by step. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model provides an overall stereogram of an annealing furnace for low-carbon cold-rolled steel sheets;

[0024] Figure 2 A half-section view of an annealing furnace for a low-carbon cold-rolled steel plate is provided for the utility model;

[0025] Figure 3 The utility model provides a schematic diagram of the internal structure of multiple rows of heat conduction pipes of an annealing furnace for low-carbon cold-rolled steel plates;

[0026] Figure 4 The utility model provides an annealing furnace for low carbon cold rolled steel sheets Figure 3 Enlarged view of point A in the middle.

[0027] Legend: 1. Annealing furnace body; 2. Water storage tank; 3. Electric telescopic rod; 4. Sliding door; 5. Accommodating chamber; 6. Multiple rows of heat pipes; 7. Water inlet bucket; 8. Rotating roller; 9. Telescopic motor; 10. Transmission roller; 11. Servo motor; 12. Support block; 13. Thermal gasket; 14. Mounting ring; 15. Fan; 16. Drain box; 17. Drain pipe; 18. Closed door. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0029] Reference Figure 1-4 The annealing furnace for low-carbon cold-rolled steel plates comprises an annealing furnace body 1, a water storage tank 2 is fixedly connected to the top of the annealing furnace body 1, two multiple rows of heat-conducting pipes 6 are fixedly connected inside the water storage tank 2, the multiple rows of heat-conducting pipes 6 are made of copper-aluminum alloy, the tops of the inner walls of the multiple rows of heat-conducting pipes 6 are evenly fixedly installed with mounting rings 14, the insides of the mounting rings 14 are evenly fixedly installed with fans 15, the inner walls of the multiple rows of heat-conducting pipes 6 and the two sides of the mounting rings 14 are evenly fixedly connected with thermal conductive gaskets 13, one end of the top of the water storage tank 2 is fixedly connected with a water inlet hopper 7, one side of the water storage tank 2 is fixedly connected with a drainage box 16, and the end of the drainage box 16 away from the water storage tank 2 is fixedly connected with a drainage pipe 17, through the setting of the water inlet hopper 7, cold water can be loaded into the water storage tank 2, and the high-temperature low-carbon cold-rolled steel plate body can be sent into the annealing furnace body 1, at this time, the fan 15 is started to dissipate the heat energy dissipated by the low-carbon cold-rolled steel plate body The heat is sucked into the interior of the multiple rows of heat-conducting pipes 6. Through the setting of the multiple rows of bent tube shapes of the multiple rows of heat-conducting pipes 6, the contact area between the multiple rows of heat-conducting pipes 6 and the cold water can be increased, so that the water in the water storage tank 2 can boil quickly, and through the setting of the thermal conductive gasket 13 and the copper-aluminum alloy material, the heat conversion rate of the heat energy dissipated by the low-carbon cold-rolled steel plate body can be improved, so that the heat energy can be effectively utilized and the waste of heat energy can be avoided. After the heat energy is sucked from one end of the multiple rows of heat-conducting pipes 6, it will come out from the other end of the multiple rows of heat-conducting pipes 6, so that it forms a virtuous cycle, and the heat energy is not directly extracted at once. When the heat passes through the multiple rows of heat-conducting pipes 6, the cold water in the water storage tank 2 will exchange heat with the heat, reduce the temperature of the heat energy, and make the heat energy temperature in the annealing furnace body 1 gradually reduce, so that the heat on the surface of the low-carbon cold-rolled steel plate is gradually reduced, thereby ensuring the production quality of the low-carbon cold-rolled steel plate.

[0030] Reference Figure 2A transmission mechanism is equidistantly arranged at the top of the inner wall of the annealing furnace body 1, and the transmission mechanism includes two telescopic motors 9 fixedly connected to the top of the inner wall of the annealing furnace body 1, and the bottom ends of the piston rods of the telescopic motors 9 are fixedly connected to support blocks 12, and transmission rollers 10 are rotatably installed between the two support blocks 12, and a servo motor 11 is fixedly installed on the outside of one of the support blocks 12, and the output shaft of the servo motor 11 is fixedly connected to the central axis of the corresponding transmission roller 10. By retracting the piston rod of the telescopic motor 9, the height of the transmission roller 10 and the support block 12 can be adjusted, so that it can adapt to the use of low-carbon cold-rolled steel plates of different widths, so that the outer side of the transmission roller 10 is in conflict with the top of the low-carbon cold-rolled steel plate, and is used in conjunction with the rotating roller 8. When the output shaft of the servo motor 11 rotates, it can drive the rotation of the transmission roller 10, so that the low-carbon cold-rolled steel plate can be gradually advanced.

[0031] Reference Figure 2 An inlet slot is provided on one side of the annealing furnace body 1, and an outlet slot is provided on the other side of the annealing furnace body 1. A accommodating chamber 5 is provided inside the annealing furnace body 1 and above the inlet slot. A sliding door 4 is slidably connected inside the accommodating chamber 5. Two electric telescopic rods 3 are fixedly installed at one end of the top of the annealing furnace body 1. The piston rods of the electric telescopic rods 3 extend to the inside of the accommodating chamber 5 and are fixedly connected to the sliding door 4. When the low-carbon cold-rolled steel plate enters the annealing furnace body 1, the electric telescopic rod 3 can be controlled to start, driving the sliding door 4 to be stored in the inside of the accommodating chamber 5, thereby facilitating the low-carbon cold-rolled steel plate to enter the annealing furnace body 1 for annealing operation.

[0032] Reference Figure 3 The bottom end of the inner wall of the annealing furnace body 1 is equidistantly installed with rotating rollers 8, a low-carbon cold-rolled steel plate body is arranged between the tops of the plurality of rotating rollers 8, and the inner walls of the plurality of rows of heat-conducting pipes 6 are coated with carbon nanotube thermal conductive coating. The setting of the carbon nanotube thermal conductive coating can improve the heat exchange rate between thermal energy and cold water.

[0033] Reference Figure 2 A closed door 18 is arranged inside the outlet slot, and the closed door 18 is rotatably connected to the inner wall of the outlet slot by a hinge. A handle is fixedly connected to the outer side of the closed door 18. The setting of the closed door 18 can reduce the dissipation of heat energy.

[0034] Reference Figure 2 One end of the multiple rows of heat-conducting pipes 6 is perpendicular to the ground, and the other end of the multiple rows of heat-conducting pipes 6 is toward the inlet groove. A visual glass is arranged on the outside of the water storage tank 2. Through the arrangement of the visual glass, the staff can clearly see the boiling situation of the cold water in the water storage tank 2.

[0035] Reference Figure 2A valve is provided on the outside of the drain pipe 17, and the servo motor 11, the telescopic motor 9, the electric telescopic rod 3 and the fan 15 are all electrically connected to the external control device, and the servo motor 11, the telescopic motor 9, the electric telescopic rod 3 and the fan 15 can be controlled to start by the external control device.

[0036] Working principle: First, through the setting of the water inlet hopper 7, cold water can be loaded into the water storage tank 2, and the high-temperature low-carbon cold-rolled steel plate body can be sent into the annealing furnace body 1. At this time, the fan 15 is started to absorb the heat energy dissipated by the low-carbon cold-rolled steel plate body into the interior of the multiple rows of heat-conducting pipes 6. The multiple rows of curved tube shapes of the multiple rows of heat-conducting pipes 6 can increase the contact area between the multiple rows of heat-conducting pipes 6 and the cold water, so that the water in the water storage tank 2 boils quickly, and the heat transfer efficiency of the heat energy dissipated by the low-carbon cold-rolled steel plate body can be improved through the setting of the heat-conducting gasket 13 and the copper-aluminum alloy material. The heat exchange rate can effectively utilize the heat energy and avoid the waste of heat energy. After the heat energy is sucked from one end of the multiple rows of heat pipes 6, it will come out from the other end of the multiple rows of heat pipes 6, so that it forms a virtuous cycle, and the heat energy is not directly extracted at once. When the heat passes through the multiple rows of heat pipes 6, the cold water in the water storage tank 2 will exchange heat with the heat, reduce the temperature of the heat energy, so that the heat energy temperature in the annealing furnace body 1 can be gradually reduced, so that the heat on the surface of the low-carbon cold-rolled steel plate is gradually reduced, thereby ensuring the production quality of the low-carbon cold-rolled steel plate;

[0037] And by extending and retracting the piston rod of the telescopic motor 9, the height of the transmission roller 10 and the support block 12 can be adjusted, so as to adapt to the use of low-carbon cold-rolled steel plates of different widths, so that the outer side of the transmission roller 10 is in conflict with the top of the low-carbon cold-rolled steel plate, and is used in conjunction with the rotating roller 8. When the output shaft of the servo motor 11 is rotating, it can drive the rotation of the transmission roller 10, so that the low-carbon cold-rolled steel plate can move forward step by step. When the cold water in the water tank 2 boils, the valve can be turned and the hot water can be released through the drain pipe 17.

[0038] The above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An annealing furnace for low-carbon cold-rolled steel sheets, comprising an annealing furnace body (1), characterized in that: The top of the annealing furnace body (1) is fixedly connected to a water storage tank (2), and two rows of heat conducting pipes (6) are fixedly connected inside the water storage tank (2), and the rows of heat conducting pipes (6) are made of copper-aluminum alloy. Mounting rings (14) are fixedly installed at the top of the inner walls of the rows of heat conducting pipes (6) at equal distances, and fans (15) are fixedly installed inside the mounting rings (14). Thermal conductive pads (13) are fixedly connected at equal distances on the inner walls of the rows of heat conducting pipes (6) and on both sides of the mounting rings (14). One end of the top of the water storage tank (2) is fixedly connected to a water inlet hopper (7), one side of the water storage tank (2) is fixedly connected to a drainage box (16), and one end of the drainage box (16) away from the water storage tank (2) is fixedly connected to a drainage pipe (17).

2. The annealing furnace for low carbon cold rolled steel sheet according to claim 1, characterized in that: A transmission mechanism is equidistantly arranged at the top of the inner wall of the annealing furnace body (1), the transmission mechanism comprising two telescopic motors (9) fixedly connected to the top of the inner wall of the annealing furnace body (1), the bottom ends of the piston rods of the telescopic motors (9) are fixedly connected to support blocks (12), and a transmission roller (10) is rotatably mounted between the two support blocks (12), a servo motor (11) is fixedly mounted on the outer side of one of the support blocks (12), and the output shaft of the servo motor (11) is fixedly connected to the central axis of the corresponding transmission roller (10).

3. The annealing furnace for low carbon cold rolled steel sheet according to claim 2, characterized in that: An inlet slot is provided on one side of the annealing furnace body (1), an outlet slot is provided on the other side of the annealing furnace body (1), a receiving chamber (5) is provided inside the annealing furnace body (1) and above the inlet slot, a sliding door (4) is slidably connected inside the receiving chamber (5), two electric telescopic rods (3) are fixedly mounted on one end of the top of the annealing furnace body (1), piston rods of the electric telescopic rods (3) extend into the interior of the receiving chamber (5) and are fixedly connected to the sliding door (4).

4. The annealing furnace for low carbon cold rolled steel sheet according to claim 1, characterized in that: Rotating rollers (8) are equidistantly mounted on the bottom end of the inner wall of the annealing furnace body (1), a low-carbon cold-rolled steel plate body is arranged between the tops of the plurality of rotating rollers (8), and the inner walls of the plurality of rows of heat-conducting pipes (6) are coated with carbon nanotube heat-conducting coating.

5. The annealing furnace for low carbon cold rolled steel sheet according to claim 3, characterized in that: A closed door (18) is arranged inside the outlet slot, the closed door (18) is rotatably connected to the inner wall of the outlet slot via a hinge, and a handle is fixedly connected to the outer side of the closed door (18).

6. The annealing furnace for low carbon cold rolled steel sheet according to claim 1, characterized in that: One end of the multiple rows of heat-conducting pipes (6) is perpendicular to the ground, and the other end of the multiple rows of heat-conducting pipes (6) faces the inlet groove. A visual glass is provided on the outside of the water storage tank (2).

7. The annealing furnace for low carbon cold rolled steel sheet according to claim 3, characterized in that: A valve is provided on the outside of the drainage pipe (17), and the servo motor (11), the telescopic motor (9), the electric telescopic rod (3) and the fan (15) are all electrically connected to external control equipment.

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