Steel billet heating furnace for producing steel rails

Abstract

The utility model discloses a steel billet heating furnace for producing steel rails, which relates to the technical field of heating furnaces and comprises an outer shell and a high-temperature-resistant heat conductor, the high-temperature-resistant heat conductor is embedded in the outer shell, and a space between the outer shell and the high-temperature-resistant heat conductor is filled with water. A plurality of conveying rollers are rotationally arranged at the bottom of the inner side of the high-temperature-resistant heat conductor, a plurality of heating units are uniformly and fixedly arranged on the top wall and the side wall of the inner side of the high-temperature-resistant heat conductor, each heating unit comprises a high-temperature-resistant ceramic body, and a nozzle is arranged in each high-temperature-resistant ceramic body and penetrates through the high-temperature-resistant heat conductor to extend into the outer shell. According to the device, steel billets for steel rail production are conveyed in the device through the conveying rollers, the heating unit heats the steel billets for steel rail production, and the high-temperature-resistant heat conductor transfers heat dissipated when the steel billets are heated into water between the outer shell and the high-temperature-resistant heat conductor.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, specifically a billet heating furnace for producing steel rails. Background Technology

[0002] Billet heating furnaces are crucial equipment in steel production, primarily used to heat steel billets to suitable temperatures for subsequent processing. The main function of the furnace is to improve the plasticity and machinability of the billets through high-temperature treatment, ensuring the smooth progress of subsequent rolling, forging, and other processes. The furnace operates by burning energy sources such as coal gas, oil, or electricity to generate high-temperature gas. The billet passes through the heating zone within the furnace, where it receives heat and reaches the predetermined temperature. The design and use of billet heating furnaces must consider factors such as thermal efficiency, temperature uniformity, and energy conservation.

[0003] The utility model authorized by announcement number CN214694311U discloses a billet heating furnace. This utility model allows high-temperature flue gas to enter the water storage chamber through a gas guide pipe, a placement box and other mechanisms. It uses water to filter the flue gas and uses the high-temperature flue gas to heat the water source in the water storage chamber, thereby reducing energy consumption and improving economic efficiency.

[0004] The above-mentioned device can achieve the purpose of secondary utilization of heat in flue gas. However, the device only utilizes the heat in high-temperature flue gas and does not utilize the heat dissipated during heating. Therefore, the utilization rate of the heat that can be reused in the device is low. Moreover, relying solely on water to filter high-temperature flue gas is far from sufficient. Therefore, a billet heating furnace with higher energy utilization and cleaner operation is needed. Utility Model Content

[0005] The purpose of this invention is to provide a billet heating furnace for producing steel rails, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A billet heating furnace for producing steel rails includes an outer shell and a high-temperature resistant heat conductor. The high-temperature resistant heat conductor is embedded in the outer shell. The space between the outer shell and the high-temperature resistant heat conductor is filled with water. A first water inlet pipe and a second water inlet pipe are respectively provided on the bottom of both sides of the outer shell. A first water outlet pipe and a second water outlet pipe are respectively provided on the top of both sides. Several conveying rollers are rotatably arranged on the bottom inner side of the high-temperature resistant heat conductor. Several heating units are uniformly fixed on the top and side walls of the inner side of the high-temperature resistant heat conductor. Each heating unit includes a high-temperature resistant ceramic body. A nozzle is provided in the high-temperature resistant ceramic body and extends through the high-temperature resistant heat conductor into the outer shell. A collecting pipe is provided on the outer side of the high-temperature resistant heat conductor. The nozzles at the same height are connected to the collecting pipes. There are four collecting pipes. The four collecting pipes are connected to each other through a first connecting pipe. An oil pipe is provided on the first connecting pipe and passes through the outer shell.

[0008] The top plate of the high-temperature heat conductor has through holes on its front and rear sides. A collecting hood is installed in the through holes. A heat exchanger is installed above the collecting hood. The collecting hood is connected to the air inlet of the heat exchanger through a pipe. A suction fan is installed on the top of the outer shell. The air outlet of the heat exchanger is connected to the air inlet of the suction fan through a second connecting pipe, and the second connecting pipe passes through the top plate of the outer shell.

[0009] As a further embodiment of this utility model: the height of the first water outlet pipe and the second water outlet pipe is higher than the height of the first water inlet pipe and the second water inlet pipe.

[0010] As a further embodiment of this utility model: a first inlet valve is provided on the first inlet pipe, a second inlet valve is provided on the second inlet pipe, a first outlet valve is provided on the first outlet pipe, and a second outlet valve is provided on the second outlet pipe.

[0011] As a further improvement of this utility model, the heat exchanger is provided with a number of fins evenly distributed on it.

[0012] As a further embodiment of this utility model: a smoke treatment device is provided on one side of the suction fan above the outer casing, and the air outlet of the suction fan is connected to the smoke treatment device through a third connecting pipe, and the air outlet of the smoke treatment device is provided with a smoke exhaust pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The steel billet used for rail production is conveyed in the device by several conveying rollers. The heating unit heats the steel billet. The high-temperature heat conductor transfers the heat dissipated during the heating of the steel billet to the water between the outer shell and the high-temperature heat conductor, which facilitates the reuse of heat and improves the energy utilization efficiency of the device.

[0015] 2. The flue gas generated during the production of steel billets for rails is collected by the collection hood. Under the action of the suction fan, the flue gas is fed to the flue gas treatment device through the heat exchanger. The heat exchanger fully transfers the heat in the flue gas to the water between the outer shell and the high-temperature heat-conducting body, which facilitates the secondary utilization of heat. The flue gas treatment device purifies the flue gas to avoid environmental pollution, thereby achieving the technical purpose of energy saving and emission reduction. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a top view of the structure of this utility model.

[0018] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the heating unit in this utility model.

[0020] Figure reference numerals: 1. Outer shell; 2. High-temperature resistant heat conductor; 3. Conveying roller; 4. Heating unit; 41. High-temperature resistant ceramic body; 42. Nozzle; 5. First water inlet pipe; 6. First water inlet valve; 7. Second water inlet pipe; 8. Second water inlet valve; 9. First water outlet pipe; 10. First water outlet valve; 11. Second water outlet pipe; 12. Second water outlet valve; 13. Oil pipe; 14. Collecting pipe; 15. First connecting pipe; 16. Collecting hood; 17. Heat exchanger; 18. Second connecting pipe; 19. Fan; 20. Third connecting pipe; 21. Flue gas treatment device; 22. Exhaust pipe. Detailed Implementation

[0021] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings and description, similar or identical parts are referred to by the same reference numerals. Furthermore, in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of the utility model. Any obvious modifications or alterations made to this utility model do not depart from its spirit and scope.

[0022] Example

[0023] Please see Figures 1-4In this embodiment of the present invention, a billet heating furnace for producing steel rails includes an outer shell 1 and a high-temperature resistant heat conductor 2. The high-temperature resistant heat conductor 2 is embedded in the outer shell 1, and the space between the outer shell 1 and the high-temperature resistant heat conductor 2 is filled with water. A first water inlet pipe 5 and a second water inlet pipe 7 are respectively provided on the bottom sides of the outer shell 1. A first water inlet valve 6 is provided on the first water inlet pipe 5, and a second water inlet valve 8 is provided on the second water inlet pipe 7. A first water outlet pipe 9 and a second water outlet pipe 11 are respectively provided on the top sides of the outer shell 1. A first water outlet valve 10 is provided on the first water outlet pipe 9, and a second water outlet valve 12 is provided on the second water outlet pipe 11. A plurality of conveying rollers 3 are rotatably arranged on the bottom inner side of the high-temperature resistant heat conductor 2. A plurality of heating elements are uniformly fixed on the top and side walls of the inner side of the high-temperature resistant heat conductor 2. The heating unit 4 includes a high-temperature resistant ceramic body 41. A nozzle 42 is installed inside the high-temperature resistant ceramic body 41, extending through a high-temperature resistant heat conductor 2 into the outer shell 1. A collecting pipe 14 is installed on the outside of the high-temperature resistant heat conductor 2. The nozzle 42 at the same height is connected to the collecting pipe 14. There are four collecting pipes 14, which are interconnected by a first connecting pipe 15. An oil pipe 13 is installed on the first connecting pipe 15, extending through the outer shell 1. Steel billets for rail production are conveyed within the device via several conveying rollers 3. The heating unit 4 heats the steel billets. The high-temperature resistant heat conductor 2 transfers the heat emitted during heating of the steel billets to the water between the outer shell 1 and the high-temperature resistant heat conductor 2, facilitating the reuse of heat and improving the energy utilization efficiency of the device.

[0024] The high-temperature heat conductor 2 has through holes on its front and rear sides. A collecting shroud 16 is installed inside each through hole. A heat exchanger 17 is installed above the collecting shroud 16. Several fins are evenly arranged on the heat exchanger 17. The collecting shroud 16 is connected to the air inlet of the heat exchanger 17 through a pipe. A suction fan 19 is installed opposite to the top of the outer shell 1. The air outlet of the heat exchanger 17 is connected to the air inlet of the suction fan 19 through a second connecting pipe 18, which passes through the top plate of the outer shell 1. A flue gas treatment device 21 is installed on one side of the suction fan 19 above the outer shell 1. A third... The connecting pipe 20 connects the air outlet of the suction fan 19 to the flue gas treatment device 21. The air outlet of the flue gas treatment device 21 is equipped with a smoke exhaust pipe 22. The flue gas generated during the production of steel billets for rails is collected and gathered through the collecting hood 16. Under the action of the suction fan 19, the flue gas is fed into the flue gas treatment device 21 through the heat exchanger 17. The heat exchanger 17 fully conducts the heat in the flue gas to the water between the outer shell 1 and the high-temperature heat-conducting body 2, which facilitates the secondary utilization of heat. The flue gas treatment device 21 purifies the flue gas to avoid environmental pollution, thereby achieving the technical purpose of energy saving and emission reduction.

[0025] When the device is running, the suction fan 19 is started to transport the steel billet used for rail production to the high-temperature heat conductor 2. Oil is supplied to the nozzle 42 through the oil pipe 13. The heating unit 4 performs high-temperature treatment on the steel billet used for rail production. The first water inlet valve 6, the second water inlet valve 8, the first water outlet valve 10, and the second water outlet valve 12 are opened to fill the space between the outer shell 1 and the high-temperature heat conductor 2 with water. During heating, the heat is conducted to the water through the high-temperature heat conductor 2, and the flue gas generated by heating is collected by the collecting hood 16 and transported to the heat exchanger 17. Under the action of the heat exchanger 17 and the fins, the heat is transferred to the water again, thereby making full secondary use of the heat and improving the energy utilization rate of the device.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A billet heating furnace for producing a steel rail, comprising an outer housing (1) and a high-temperature-resistant heat conductor (2), characterized in that, The high-temperature-resistant heat conductor (2) is embedded and installed in the outer shell (1), the space between the outer shell (1) and the high-temperature-resistant heat conductor (2) is filled with water, the bottom of the outer shell (1) on both sides is respectively provided with a first water inlet pipe (5) and a second water inlet pipe (7), the top of the outer shell (1) on both sides is respectively provided with a first water outlet pipe (9) and a second water outlet pipe (11), a plurality of conveying rollers (3) are rotatably arranged on the inner bottom of the high-temperature-resistant heat conductor (2), a plurality of heating units (4) are uniformly arranged on the inner top wall and the side wall of the high-temperature-resistant heat conductor (2), the heating unit (4) comprises a high-temperature-resistant ceramic body (41), a nozzle (42) is arranged in the high-temperature-resistant ceramic body (41) and extends into the outer shell (1) through the high-temperature-resistant heat conductor (2), a collecting pipe (14) is arranged on the outside of the high-temperature-resistant heat conductor (2), the nozzles (42) at the same height are communicated with the collecting pipes (14), the number of the collecting pipes (14) is four, the four collecting pipes (14) are communicated with each other through a first connecting pipe (15), and an oil pipe (13) is arranged on the first connecting pipe (15) and extends through the outer shell (1); The high-temperature-resistant heat conductor (2) is embedded and installed in the outer shell (1), the space between the outer shell (1) and the high-temperature-resistant heat conductor (2) is filled with water, the bottom of the outer shell (1) on both sides is respectively provided with a first water inlet pipe (5) and a second water inlet pipe (7), the top of the outer shell (1) on both sides is respectively provided with a first water outlet pipe (9) and a second water outlet pipe (11), a plurality of conveying rollers (3) are rotatably arranged on the inner bottom of the high-temperature-resistant heat conductor (2), a plurality of heating units (4) are uniformly arranged on the inner top wall and the side wall of the high-temperature-resistant heat conductor (2), the heating unit (4) comprises a high-temperature-resistant ceramic body (41), a nozzle (42) is arranged in the high-temperature-resistant ceramic body (41) and extends into the outer shell (1) through the high-temperature-resistant heat conductor (2), a collecting pipe (14) is arranged on the outside of the high-temperature-resistant heat conductor (2), the nozzles (42) at the same height are communicated with the collecting pipes (14), the number of the collecting pipes (14) is four, the four collecting pipes (14) are communicated with each other through a first connecting pipe (15), and an oil pipe (13) is arranged on the first connecting pipe (15) and extends through the outer shell (1); 2. The billet heating furnace for producing a steel rail according to claim 1, characterized by, The height of the first water outlet pipe (9) and the second water outlet pipe (11) is higher than that of the first water inlet pipe (5) and the second water inlet pipe (7).

3. The billet heating furnace for producing a steel rail according to claim 1, characterized by, A first water inlet valve (6) is arranged on the first water inlet pipe (5), a second water inlet valve (8) is arranged on the second water inlet pipe (7), a first water outlet valve (10) is arranged on the first water outlet pipe (9), and a second water outlet valve (12) is arranged on the second water outlet pipe (11).

4. The billet heating furnace for producing a steel rail according to claim 3, characterized in that, A plurality of fins are uniformly arranged on the heat exchanger (17).

5. The billet heating furnace for producing a steel rail according to claim 4, characterized in that, A flue gas treatment device (21) is arranged on one side of the suction fan (19) above the outer shell (1), a third connecting pipe (20) is arranged to connect the outlet of the suction fan (19) with the flue gas treatment device (21), and an exhaust pipe (22) is arranged at the outlet of the flue gas treatment device (21).

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