Adjusting device for continuous casting tundish nozzle baking furnace

Abstract

The utility model provides an adjusting device for a continuous casting tundish nozzle baking furnace. The adjusting device comprises a fuel gas pipeline, an oxygen pipeline and an air pipeline. The oxygen pipeline and the air pipeline intersect to form an input pipeline, the input pipeline comprises at least two first branch pipelines, the gas pipeline comprises at least two second branch pipelines, each first branch pipeline intersects with one second branch pipeline to form at least two mixing pipelines, and the mixing pipelines are communicated with the baking furnace and used for providing combustion energy for baking. At least one mixing pipeline is provided with a collecting tank, and the collecting tank can store flowing gas so that the flow in other mixing pipelines can be reduced. According to the utility model, the plurality of mixing pipelines are communicated with the baking furnace, so that materials in the baking furnace can be uniformly heated, the heating temperature of the materials can be automatically adjusted, and the required temperatures of the materials in different time periods are different to meet the baking requirements. And the effect of rapidly reducing the gas flow is achieved, and it is guaranteed that materials in the baking furnace are heated more evenly.

Description

Technical Field

[0001] The utility model relates to the technical field of iron and steel metallurgy, in particular to an adjusting device for a continuous casting tundish nozzle baking furnace. Background Art

[0002] The purpose of using a tundish is to transport the molten steel to the crystallizer smoothly at the designed flow rate and temperature, without contamination caused by inclusions, and to keep the steel flow rate injected into the crystallizer constant by maintaining the depth of the molten steel in the tundish.

[0003] Continuous casting requires that the temperature of the molten steel in the tundish be appropriate, stable, uniform, and have a small fluctuation range. Fluctuations in the temperature of the molten steel in the tundish will lead to fluctuations in the quality of the continuous casting billet. If the temperature is too low, the molten steel will condense and the water inlet of the tundish will freeze and become blocked, resulting in suspension of continuous casting and deterioration of the surface quality of the billet. If the temperature is too high, the columnar crystals in the billet will develop, promoting defects such as central segregation, looseness and cracks. At the same time, the secondary oxidation of the molten steel itself will aggravate the melting loss of the ladle lining and the refractory capacity of the water inlet, thereby contaminating the steel inlet.

[0004] In addition, if the temperature of the molten steel is too high, only low casting speed can be used, which reduces the continuous casting productivity. Therefore, improving the qualified rate of the molten steel temperature in the continuous casting tundish and reducing the temperature fluctuation of the molten steel in the tundish are of great significance to improving the quality of the casting, reducing accidents and stabilizing production operations. Due to the long baking time of the existing tundish, high gas consumption, easy collapse of the refractory material in the tundish, high ambient temperature of the continuous casting platform, poor working environment for workers, and it is difficult for the baking parts to meet the required process parameter requirements.

[0005] Moreover, in the prior art, regulating valves are mostly used to adjust the flow of each intake pipeline. However, the disadvantage of adjusting through the valve body is that the gas flow may increase or decrease sharply, which may lead to abnormal combustion or even flameout. Therefore, the adjustment amount of gas and air mostly requires repeated adjustment of the regulating valve several times, which has low adjustment efficiency and great difficulty. Utility Model Content

[0006] In view of this, the utility model aims to propose a continuous casting tundish nozzle baking furnace regulating device, so as to automatically adjust the heating temperature of the material, and the required temperature of the material in different time periods is different to meet the baking process requirements.

[0007] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0008] A continuous casting tundish nozzle baking furnace regulating device, comprising a gas pipeline, an oxygen pipeline and an air pipeline;

[0009] The oxygen pipeline and the air pipeline are joined to form an input pipeline, the input pipeline includes at least two first branch pipelines, and the gas pipeline includes at least two second branch pipelines;

[0010] Each of the first branch pipelines intersects with one of the second branch pipelines to form at least two mixing pipelines, and the mixing pipelines are connected to the baking furnace to provide combustion energy for the baking furnace;

[0011] At least one of the mixing pipelines is provided with a collecting tank, which can store the gas flowing through so as to reduce the flow in the other mixing pipelines.

[0012] Furthermore, the collection tank includes a tank body having an inner cavity, and an inner tube disposed in the inner cavity of the tank body;

[0013] The tank body is provided with an inlet connected to the mixing pipeline and an outlet connected to the baking oven;

[0014] The inner tube is connected with the inlet, and the inner tube extends from the inlet end to the bottom of the tank body, and one end of the inner tube close to the bottom of the tank body is spaced apart from the tank body, and an intermediate cavity is formed between the inner tube and the tank body, and an air inlet cavity is provided in the inner tube, and the air inlet cavity and the intermediate cavity are connected at the interval between the tank body and the inner tube.

[0015] Furthermore, the tank body is provided with a communication port connected to an external vacuum device.

[0016] Furthermore, the outlet is connected to the baking oven via a connecting pipeline, and a first one-way valve is provided on the connecting pipeline. The first one-way valve is used to prevent the gas in the baking oven from flowing back.

[0017] Furthermore, a second one-way valve is provided on the mixing pipeline, and the second one-way valve is used to prevent the airflow in the baking oven from flowing back.

[0018] Furthermore, the gas pipeline, the air pipeline and the oxygen pipeline are provided with a pneumatic flow regulating valve and a manual flow regulating valve.

[0019] Furthermore, the gas pipeline is provided with a pressure sensor for detecting pressure.

[0020] Furthermore, a first stop valve is also provided on the input pipeline.

[0021] Furthermore, the baking oven is provided with two interfaces, one of which is connected to the mixing pipeline, and the other interface is connected to the connecting pipeline;

[0022] A second stop valve is provided between the first branch pipeline and the mixing pipeline;

[0023] A third stop valve is provided between the second branch pipeline and the mixing pipeline.

[0024] Further, a flame arrester is provided on the input pipeline; and / or a third one-way valve and a fourth one-way valve are provided on the oxygen pipeline and the air pipeline, respectively.

[0025] Compared with the prior art, the utility model has the following advantages:

[0026] The continuous casting middle ladle water nozzle baking furnace regulating device described in the utility model is connected with the baking furnace by setting at least two mixing pipelines, and the baking furnace is charged through multiple air filling holes, which is conducive to the uniform heating of the materials in the baking furnace, and then automatically adjusts the heating temperature of the materials. The required temperature of the materials in different time periods is different, so as to meet the baking requirements. And by setting a collection tank on one of the mixing pipelines, when the gas flow entering the baking furnace is too much, the collection tank can reduce the gas flow entering other mixing pipelines due to the low pressure in its own tank under the same pressure of the constant input pipeline and the gas pipeline, and cache the different incoming gases, which can not only quickly reduce the gas flow at the connecting port connected to the baking furnace, but also ensure that the materials in the baking furnace are heated more evenly.

[0027] In addition, by arranging an inner tube in the inner cavity of the collecting tank, when oxygen, air and coal gas are mixed and pass through the air inlet cavity of the inner tube, due to the external pressure, the mixed gas passes through the air inlet cavity and enters the middle cavity and then is output from the outlet, which can improve the mixing effect of the mixed gas. Moreover, when adjusting the different temperatures required for baking materials, after the air and coal gas are mixed, when oxygen is introduced, the mixing effect of the mixed gas entering the baking furnace can be improved through the mixing mode of the middle cavity and the air inlet cavity, avoiding the sudden over-temperature caused by the critical state of oxygen addition, which affects the baking quality of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the working connection of the regulating device according to an embodiment of the utility model;

[0030] Figure 2 It is a cross-sectional schematic diagram of the collection tank described in the embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 1. Input pipeline; 2. Gas pipeline; 3. First mixing pipeline; 4. Second mixing pipeline; 5. Collecting tank; 6. Baking oven; 7. Connecting pipeline; 8. First one-way valve; 9. Second one-way valve; 10. Pneumatic flow regulating valve; 11. Manual flow regulating valve; 12. Pressure sensor; 13. First stop valve; 14. Second stop valve; 15. Third stop valve; 16. Flame arrester; 17. Third one-way valve; 18. Fourth one-way valve;

[0033] 101. air pipeline; 102. oxygen pipeline; 103. first branch pipeline;

[0034] 201, the second branch line;

[0035] 501, tank body; 502, inner tube; 503, middle cavity; 504, air inlet cavity;

[0036] 601, interface;

[0037] 5011, entrance; 5012, exit; 5013, connecting port. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] The present embodiment relates to a continuous casting tundish nozzle baking furnace regulating device, which comprises a gas pipeline 2, an oxygen pipeline 102 and an air pipeline 101. The oxygen pipeline 102 and the air pipeline 101 intersect to form an input pipeline 1, the input pipeline 1 comprises at least two first branch pipelines 103, the gas pipeline 2 comprises at least two second branch pipelines 201, each first branch pipeline 103 intersects with a second branch pipeline 201, and forms at least two mixing pipelines, the mixing pipeline is connected to the baking furnace 6, and is used to provide combustion energy for the baking furnace. At least one mixing pipeline is provided with a collecting tank 5, which can store the gas flowing through to reduce the flow in other mixing pipelines.

[0043] The continuous casting middle ladle water nozzle baking furnace regulating device described in this embodiment is connected to the baking furnace 6 by setting at least two mixing pipelines, and the baking furnace 6 is charged through multiple air filling holes, which is conducive to the uniform heating of the materials in the baking furnace 6, and then automatically adjusts the heating temperature of the materials. The required temperature of the materials in different time periods is different, and the baking requirements are met. And by setting a collection tank 5 on one of the mixing pipelines, when the gas flow entering the baking furnace 6 is too much, the collection tank 5 can reduce the gas flow entering other mixing pipelines due to the low pressure in its own tank under the same pressure of the constant input pipeline 1 and the gas pipeline 2, and can quickly reduce the gas flow at the connecting port 5013 connected to the baking furnace 6, ensuring that the materials in the baking furnace 6 are heated more evenly.

[0044] Based on the above overall introduction, an exemplary structure of the continuous casting tundish nozzle baking furnace adjustment device of this embodiment is as follows: Figure 1 As shown, in this embodiment, an air pipeline 101, a gas pipeline 2 and an oxygen pipeline 102 are provided, wherein the air pipeline 101 can be connected to an external blower, the gas pipeline 2 is connected to a gas tank 501 or a gas source, and the oxygen pipeline 102 is connected to an external oxygen tank.

[0045] Generally speaking, the baking process of the continuous casting tundish nozzle baking furnace 6 mostly adopts three stages of small-scale pre-baking and preheating drying, medium-fire baking, and high-fire baking to smelt and bake the materials. For example, in this embodiment, the long-life tundish is first prepared:

[0046] Two hours after the online tundish is poured, the next tundish is organized to be baked online. After the long-life tundish is put into operation, its preparation work can be summarized as: "one inspection, two seals". One inspection is to conduct necessary inspections on the tundish to ensure the overall quality of the tundish and meet the requirements of can opening, heat exchange and normal pouring. Two seals are to seal the upper edge of the tundish with the tundish cover plate with asbestos felt, use a burner with a sealing plate in the impact zone, increase the baking temperature in the impact zone, and reduce the temperature drop in the impact zone.

[0047] Secondly, pre-bake with low heat and dry with residual heat

[0048] Pre-bake at low heat (about 300℃) for about 2.0 hours, then turn off the gas to stop heating and baking, and use the residual heat from pre-bake to continue evaporating the water vapor in the middle bag until no water vapor comes out. Depending on the production situation, stop baking for 12-22 hours.

[0049] Again, bake on medium heat

[0050] According to the production situation, open the gas valve again for baking about 5 hours before use. In order to prevent the material from collapsing during baking, first use low heat (about 300℃) for 0.5 hour, slowly increase the temperature, and then use medium heat (about 850℃) for 3.5 hours.

[0051] Finally, bake over high heat

[0052] One hour before use, bake at high fire (above 1000℃) for 1.0 hour, measure the temperature of various parts inside and outside the tundish with an infrared temperature measuring gun, and when the tundish reaches the baking temperature requirement, open the can or heat exchange it, and the tundish enters the casting state.

[0053] As can be seen from the above baking process, the baking temperature needs to be adjusted multiple times in different stages of baking. In this embodiment, it is considered that when baking with a low fire, only the gas pipeline 2 needs to be opened to meet the temperature requirement. When baking with a medium fire, the air pipeline 101 can be opened appropriately to increase the baking temperature by mixing air and gas. When baking with a high fire, the oxygen pipeline 102 can be opened again to further increase the baking temperature to a higher temperature by adding oxygen to meet the needs of baking the material.

[0054] As an exemplary implementation, two mixing pipelines are provided in this embodiment. For the convenience of description, the mixing pipeline connected to the collecting tank 5 is named as the first mixing pipeline 3, and the other mixing pipeline is named as the second mixing pipeline 4. Of course, in other embodiments, in order to increase the adjustment accuracy, multiple mixing pipelines with collecting tanks 5 can also be provided to reduce the gas flow in each pipeline, avoid the sudden decrease or increase of the flame, and improve the heating uniformity of the material.

[0055] Preferably, if Figure 1 and Figure 2As shown, the collecting tank 5 comprises a tank body 501 having an inner cavity, and an inner tube 502 arranged in the inner cavity of the tank body 501, and the tank body 501 is provided with an inlet 5011 communicating with the mixing pipeline, and an outlet 5012 communicating with the baking oven 6. The inner tube 502 is communicated with the inlet 5011, and the inner tube 502 extends from the inlet 5011 end to the bottom of the tank body 501, and one end of the inner tube 502 close to the bottom of the tank body 501 is spaced from the tank body 501, and an intermediate cavity 503 is spaced between the inner tube 502 and the tank body 501, and an air inlet cavity 504 is provided in the inner tube 502, and the air inlet cavity 504 is communicated with the intermediate cavity 503 at the interval between the tank body 501 and the inner tube 502.

[0056] As Figure 2 As shown, the inner tube 502 is fixedly connected to the tank body 501, and specifically, the tank body 501 and the inner tube 502 can be integrally formed by welding, casting, etc. The inner tube 502 can be a tube with a circular ring structure, a rectangular structure, etc. One end of the inner tube 502 is fixed to the cavity wall of the tank body 501 near the inlet 5011, and the air inlet cavity 504 is connected to the inlet 5011. The other end of the inner tube 502 extends to the bottom of the tank body 501. The gas in the first mixing pipeline 3 enters through the air inlet cavity 504, flows along the tube wall of the inner tube 502 to the middle cavity 503, and then flows out from the outlet 5012 into the baking oven 6.

[0057] As Figure 2 As shown, the inlet 5011 of the collecting tank 5 of this embodiment is placed downward, and the mixed gas enters through the air inlet chamber 504 and flows to the middle chamber 503. The gas in the middle chamber 503 can move downward. When high-fire baking is required, a new mixture of oxygen and air enters the air inlet chamber 504. Since the pressure of the air inlet chamber 504 is high and the pressure of the middle chamber 503 is low, the newly entered mixed gas can be mixed with the previous mixed gas in the middle chamber 503 first, which plays a role of buffering mixing, thereby avoiding sudden increase or decrease in temperature, ensuring a smooth temperature transition, and achieving a better baking effect.

[0058] In this embodiment, an inner tube 502 is provided in the inner cavity of the collecting tank 5. When oxygen, air and coal gas are mixed, they pass through the air inlet cavity 504 of the inner tube 502. Due to the external pressure, the mixed gas passes through the air inlet cavity 504 and enters the middle cavity 503 and then is output from the outlet 5012, which can improve the mixing effect of the mixed gas. In addition, when adjusting the different temperatures required for baking materials, after the air and coal gas are mixed, when oxygen is introduced, the mixing effect of the mixed gas entering the baking furnace 6 can be improved through the mixing mode of the middle cavity 503 and the air inlet cavity 504, so as to avoid the sudden over-temperature caused by the critical state of oxygen addition, which affects the baking quality of the materials.

[0059] As a preferred embodiment, the tank body 501 is provided with a communication port 5013 for communicating with an external vacuum device. Figure 2As shown, the connecting port 5013 of this embodiment is connected to the bottom of the tank body 501 and is connected to the middle cavity 503. The pressure of the middle cavity 503 in the tank body 501 is reduced by an external vacuum device, which is beneficial to generate a pressure difference between the air inlet cavity 504 and the middle cavity 503, thereby promoting the effect of mixing different types of mixed gases and increasing the mixing uniformity.

[0060] In order to improve the safety of use, Figure 1 As shown, the outlet 5012 is connected to the baking oven 6 via a connecting pipe 7 , and a first one-way valve 8 is provided on the connecting pipe 7 . The first one-way valve 8 is used to prevent the gas in the baking oven 6 from flowing back.

[0061] In addition, Figure 1 As shown, a second one-way valve 9 is provided on the mixing pipeline, and the second one-way valve 9 is used to prevent the airflow in the baking oven 6 from flowing back.

[0062] Furthermore, in order to achieve a better regulation effect, a pneumatic flow regulating valve 10 and a manual flow regulating valve 11 are provided on the gas pipeline 2, the air pipeline 101 and the oxygen pipeline 102 of this embodiment. The pneumatic flow regulating valve 10 and the manual flow regulating valve 11 can be selected by using the structure of the prior art, which is not limited in this embodiment, and in order to increase the degree of automation, a controller is also provided on the baking oven 6, such as a PLC, for controlling the pneumatic flow regulating valve 10 to achieve automatic regulation.

[0063] In this embodiment, by simultaneously providing pneumatic valves and manual valves on the gas pipeline 2, the air pipeline 101, and the oxygen pipeline 102, flexibility can be increased. When high pressure and large flow are used, the pneumatic valve is used to control the flow of the pipeline, and when low pressure and small flow are used, the manual valve is used to control the flow of the pipeline. In addition, when the gas source is interrupted or a fault occurs, the manual valve reliably controls each pipeline, thereby improving safety. The manual valve can also facilitate the maintenance and cleaning of the pneumatic flow control valve 10, thereby improving the performance.

[0064] Preferably, a pressure sensor 12 for detecting pressure is provided on the gas pipeline 2. The pressure sensor 12 can be set so that when the gas pressure in the gas pipeline 2 is low, the controller can control the pneumatic flow regulating valve 10 to close to prevent gas leakage after the fire is extinguished.

[0065] like Figure 1 As shown, a first stop valve 13 is also provided on the input pipeline 1. The opening and closing of the first stop valve 13 can close the oxygen pipeline 102 and the air pipeline 101 under low-fire baking conditions, and can also be used for maintenance or cleaning of the oxygen pipeline 102 and the air pipeline 101. Of course, the first stop valve 13 can be controlled pneumatically, electrically or manually.

[0066] Further, as Figure 1 As shown, the baking oven 6 is provided with two interfaces 601, one of which is connected to the mixing pipeline, and the other interface 601 is connected to the connecting pipeline 7, a second stop valve 14 is provided between the first branch pipeline 103 and the mixing pipeline; a third stop valve 15 is provided between the second branch pipeline 201 and the mixing pipeline.

[0067] By providing the second stop valve 14 and the third stop valve 15, the second mixing pipeline 4 can be closed when the air pipeline 101 or the oxygen pipeline 102 is ignited alone, or when the air pipeline 101 and the oxygen pipeline 102 are ignited, so that the mixed gas is only input from the first mixing pipeline 3, thereby being suitable for the gas supply in the process of transition from low fire to medium fire. By mixing the gas in the collecting tank 5, the air supplied to the baking furnace 6 can be mixed evenly, so that the flame can maintain a stable burning state, thereby ensuring the baking effect.

[0068] The second stop valve 14 and the third stop valve 15 of this embodiment can be pneumatically controlled or electrically controlled and electrically connected to the controller to adapt to automatic control when different temperatures and flow rates are required during the baking process, thereby improving the convenience and practicality of adjustment.

[0069] In addition, in order to prevent the air pipeline 101 and the oxygen pipeline 102 from backfired, a flame arrester 16 is provided on the input pipeline 1, and a third check valve 17 and a fourth check valve 18 are provided on the oxygen pipeline 102 and the air pipeline 101, respectively. Of course, the flame arrester 16 may be provided only on the input pipeline 1, or the third check valve 17 and the fourth check valve 18 may be provided on the oxygen pipeline 102 and the air pipeline 101, respectively, to ensure the safety of baking.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous casting tundish nozzle baking furnace regulating device, characterized in that: It comprises a gas pipeline (2), an oxygen pipeline (102) and an air pipeline (101); The oxygen pipeline (102) and the air pipeline (101) are joined to form an input pipeline (1), the input pipeline (1) includes at least two first branch pipelines (103), and the gas pipeline (2) includes at least two second branch pipelines (201); Each of the first branch pipelines (103) intersects with one of the second branch pipelines (201) to form at least two mixing pipelines, and the mixing pipelines are connected to the baking furnace (6) to provide combustion energy for the baking furnace; At least one of the mixing pipelines is provided with a collecting tank (5), and the collecting tank (5) is capable of storing the gas flowing through so as to reduce the flow rate in the other mixing pipelines.

2. The continuous casting tundish nozzle baking furnace regulating device according to claim 1, characterized in that: The collecting tank (5) comprises a tank body (501) having an inner cavity, and an inner tube (502) arranged in the inner cavity of the tank body (501); The tank body (501) is provided with an inlet (5011) connected to the mixing pipeline, and an outlet (5012) connected to the baking oven (6); The inner tube (502) is connected to the inlet (5011), and the inner tube (502) extends from the inlet (5011) end to the bottom of the tank body (501), and one end of the inner tube (502) close to the bottom of the tank body (501) is spaced apart from the tank body (501), and an intermediate cavity (503) is provided at the interval between the inner tube (502) and the tank body (501), and an air inlet cavity (504) is provided in the inner tube (502), and the air inlet cavity (504) and the intermediate cavity (503) are connected at the interval between the tank body (501) and the inner tube (502).

3. The continuous casting tundish nozzle baking furnace regulating device according to claim 2, characterized in that: The tank body (501) is provided with a communication port (5013) that is connected to an external vacuum device.

4. The continuous casting tundish nozzle baking furnace regulating device according to claim 3 is characterized in that: The outlet (5012) is connected to the baking oven (6) via a connecting pipe (7), and a first one-way valve (8) is provided on the connecting pipe (7). The first one-way valve (8) is used to prevent the gas in the baking oven (6) from flowing back.

5. The continuous casting tundish nozzle baking furnace regulating device according to claim 3, characterized in that: The mixing pipeline is provided with a second one-way valve (9), and the second one-way valve (9) is used to prevent the airflow in the baking oven (6) from flowing back.

6. The continuous casting tundish nozzle baking furnace regulating device according to claim 3, characterized in that: The gas pipeline (2), the air pipeline (101) and the oxygen pipeline (102) are provided with a pneumatic flow regulating valve (10) and a manual flow regulating valve (11).

7. The continuous casting tundish nozzle baking furnace regulating device according to claim 3, characterized in that: The gas pipeline (2) is provided with a pressure sensor (12) for detecting pressure.

8. The continuous casting tundish nozzle baking furnace regulating device according to claim 3, characterized in that: The input pipeline (1) is also provided with a first stop valve (13).

9. The continuous casting tundish nozzle baking furnace regulating device according to claim 4, characterized in that: The baking oven (6) is provided with two interfaces (601), one of the interfaces (601) is connected to the mixing pipeline, and the other interface (601) is connected to the connecting pipeline (7); A second stop valve (14) is provided between the first branch pipeline (103) and the mixing pipeline; A third stop valve (15) is provided between the second branch pipeline (201) and the mixing pipeline.

10. The continuous casting tundish nozzle baking furnace regulating device according to claim 1, characterized in that: The input pipeline (1) is provided with a flame arrester (16); and / or the oxygen pipeline (102) and the air pipeline (101) are respectively provided with a third one-way valve (17) and a fourth one-way valve (18).

Images