Baking device for submersed nozzle of continuous casting machine

Abstract

The baking device comprises a baking box, a nozzle supporting arm, a burner mounting seat and a flame detection mounting seat, a side opening door capable of being opened and closed is arranged on one vertical side of a box body of the baking box, an opening is formed in the top side of the baking box, and the nozzle supporting arm is fixedly connected with the baking box; the nozzle supporting arm is provided with a notch which is located above the baking oven and used for suspending a nozzle, the burner mounting seat is mounted on the baking oven, a burner is mounted on the burner mounting seat and used for being aligned with a baking hole of the nozzle suspended in the notch, the flame detection mounting seat is mounted on the baking oven, and an infrared detector is mounted on the flame detection mounting seat. The infrared detector is used for detecting whether the burner generates flames or not, the baking device is provided with a control system, the control system is in signal connection with the infrared detector and the burner, and the control system is used for cutting off gas supply of the burner when the flames are extinguished. According to the device, linkage of flame detection and an energy supply system is realized, and the use safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steelmaking continuous casting, and particularly relates to a baking device for an immersion nozzle of a continuous caster. Background Art

[0002] The immersion nozzle needs to be preheated before being put into operation to achieve the expected service life and effect. Therefore, a baking device is required to bake and preheat the immersion nozzle before it is put into operation.

[0003] The existing baking device mixes and burns gas and compressed air at the baking burner to preheat the immersion nozzle. However, this device has the defect of flame extinction during the preheating process. When the flame goes out, there is a risk of gas leakage and gas poisoning of the staff because the gas and compressed air are still being supplied. At the same time, this device requires manual ignition, which poses a risk of scalding to the staff, has great potential safety hazards in production, does not meet the requirements of modern metallurgical essential safety, and also does not meet the relevant provisions of the "[AQ2001 - 2018] Safety Regulations for Steelmaking". Summary of the Invention

[0004] To solve the above problems, the present application provides a baking device for an immersion nozzle of a continuous caster.

[0005] The present application provides a baking device for an immersion nozzle of a continuous caster, which includes a baking oven, a nozzle support arm, a burner mounting seat, and a flame detection mounting seat. The baking oven is provided with an openable side door on a vertical side of the box body, and an open top. The nozzle support arm is fixedly connected to the baking oven. The nozzle support arm is provided with a notch above the baking oven for suspending the nozzle. The burner mounting seat is installed on the baking oven, and a burner is installed on the burner mounting seat. The burner is used to align with the baking hole of the nozzle suspended in the notch. The flame detection mounting seat is installed on the baking oven, and an infrared detector is installed on the flame detection mounting seat. The infrared detector is used to detect whether the burner generates a flame. The baking device is configured with a control system, and the control system is signal - connected to both the infrared detector and the burner. The control system is used to cut off the gas supply of the burner when the flame goes out.

[0006] In some embodiments, the burner mounting seat is arranged on a vertical side of the baking oven adjacent to the side door, and the flame detection mounting seat is arranged on a side of the burner mounting seat deviating from the side door.

[0007] In some embodiments, the flame detection mounting seat is inclined and installed on the baking oven compared with the burner mounting seat, and the detection port of the flame detection mounting seat is relatively close to the burner mounting seat.

[0008] In some embodiments, the flame detection mounting seat is installed on the baking oven at an inclination of 45°.

[0009] In some embodiments, the detection port of the flame detection mount faces the baking hole of the water inlet suspended at the notch.

[0010] In some embodiments, the oven body includes a steel structure shell and a refractory material layer fixed to the inner side of the steel structure shell.

[0011] In some embodiments, firebricks are installed on the bottom side of the inner wall of the oven. The firebricks are located directly below the notch and are used to support the water inlet suspended at the notch.

[0012] In some embodiments, the water inlet support arm is welded to the steel structure shell.

[0013] In some embodiments, gusset plates are welded to the water inlet support arm at the corners.

[0014] In some embodiments, both the burner mount and the flame detection mount are installed in the oven in an inlaid manner.

[0015] The beneficial effects of this application are as follows: A baking device for the submerged entry nozzle of a continuous casting machine is provided, including an oven, a water inlet support arm, a burner mount, and a flame detection mount. The burner installed on the burner mount provides flame for the water inlet suspended on the water inlet support arm. A flame detection mount is added to the oven, and an infrared detector installed on the flame detection mount is used to detect whether the burner generates flame. This device involves a control system that is signal-connected to the infrared detector and the burner. When the detection data of the infrared detector feedbacks that the flame provided by the burner is extinguished, the control system cuts off the gas supply to the burner, thereby realizing the interlock between the flame detection and the energy supply system, improving the use safety, realizing the function of automatically cutting off the gas supply system after the flame goes out, and ensuring the safety of on-site workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0017] Figure 1 It is the front view of a baking device for the submerged entry nozzle of a continuous casting machine provided by this application;

[0018] Figure 2 It is the side view of a baking device for the submerged entry nozzle of a continuous casting machine provided by this application;

[0019] Figure 3 It is the top view of a baking device for the submerged entry nozzle of a continuous casting machine provided by this application.

[0020] Attached drawing reference numerals: 100 - baking oven, 110 - side opening door, 120 - open mouth, 131 - steel structure outer shell, 132 - refractory material layer, 140 - clay brick, 200 - submerged nozzle support arm, 210 - notch, 220 - rib plate, 300 - burner mounting seat, 400 - flame detection mounting seat, 20 - submerged nozzle, 21 - baking hole. Specific implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0022] In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0023] The existing baking device mixes and burns gas and compressed air at the baking burner to preheat the submerged nozzle. However, this device has the defect of flame extinction during the preheating process. When the flame goes out, since gas and compressed air are still supplied, there is a risk of gas leakage and gas poisoning of the staff. At the same time, this device requires manual ignition, there is a risk of the staff being scalded, and there are relatively large potential safety hazards in production.

[0024] Please refer to Figures 1 to 3 , the present application provides a baking device for the submerged nozzle of a continuous casting machine, hereinafter simply referred to as the baking device. The baking device includes a baking oven 100 as the main structure, and a submerged nozzle support arm 200, a burner mounting seat 300, and a flame detection mounting seat 400 connected to the baking oven 100.

[0025] The baking oven 100 includes a steel structure outer shell 131 and a refractory material layer 132. The refractory material layer 132 is fixed to the inner side of the steel structure outer shell 131 to improve the fire resistance of the box body. Please refer to Figure 1 and Figure 3, the top side of the baking oven 100 is an open mouth 120. Through the open mouth 120, the water inlet 20 can be vertically inserted into the baking oven 100. The baking oven 100 is provided with an openable side door 110 on one vertical side of the box body. By opening the side door 110, the water inlet 20 is horizontally moved into the baking oven 100. The detachable installation of the water inlet 20 is realized through the water inlet support arm 200, and the water inlet 20 is installed on the water inlet support arm 200 in a hanging manner. Please refer to Figure 1 and Figure 2 , the water inlet support arm 200 is fixedly connected to the steel structure shell 131 of the baking oven 100. The water inlet support arm 200 is arranged outside the baking oven 100, and a part of the structure of the water inlet support arm 200 is located directly above the baking oven 100. A notch 210 is opened in the part of the structure of the water inlet support arm 200 that is located directly above the baking oven 100. The water inlet 20 is suspended through this notch 210 of the water inlet support arm 200.

[0026] Please refer to in combination with Figures 1 to 3 , the burner mounting seat 300 is installed on the baking oven 100. The burner mounting seat 300 is specifically installed on the vertical side of the baking oven 100. A burner is installed on the burner mounting seat 300. The burner is a general term for a device that makes fuel and air spray out and mix for combustion in a certain way. The fuel is a gaseous substance, and generally gas is used as the fuel of the burner in the field of this application. The burner in this application has an electronic ignition function. The control system of the baking device controls the burner to perform electronic ignition, and the burner can provide a flame for preheating the water inlet 20. Matched with the structure of the water inlet 20, the burner is aligned with the baking hole 21 of the water inlet 20. At this time, the water inlet 20 is suspended in the notch 210 of the water inlet support arm 200, which can achieve the effect that the flame provided by the burner directly enters the baking hole 21 of the water inlet 20, realizing sufficient preheating of the water inlet 20, reducing the distribution degree of the flame outside the water inlet 20, and reducing the degree of the flame overflowing from the baking oven 100 to a certain extent.

[0027] Please refer to in combination with Figures 1 to 3 , the flame detection mounting seat 400 is installed on the baking oven 100. An infrared detector is installed on the flame detection mounting seat 400, and whether the burner generates a flame is detected through the infrared detector.

[0028] The baking device is configured with a control system. The control system is signal-connected to both the infrared detector and the burner. The control system judges the real-time situation of the flame existence in the baking oven 100 according to the detection signal of the infrared detector. And when it is determined that the flame goes out, the control system automatically cuts off the gas supply of the burner, improving the risk of gas leakage caused by continuous gas input when the flame goes out and resulting in poisoning of personnel.

[0029] In summary, when preheating the nozzle 20 using the baking device of the present application, the burner installed on the burner mounting seat 300 provides a flame for the nozzle 20 suspended on the nozzle support arm 200. A flame detection mounting seat 400 is added to the baking oven 100, and an infrared detector installed on the flame detection mounting seat 400 is used to detect whether the burner generates a flame. This device involves a control system that is signal-connected to the infrared detector and the burner. When the detection data of the infrared detector indicates that the flame provided by the burner has gone out, the control system cuts off the gas supply to the burner, thereby realizing the interlock between the flame detection and the energy supply system, improving the use safety, achieving the function of automatically cutting off the gas supply system after the flame goes out, and ensuring the safety of on-site staff.

[0030] In some embodiments, please refer to Figure 2 and Figure 3 , the burner mounting seat 300 is provided on the vertical side of the baking oven 100, and is installed on the vertical side adjacent to the side door 110 in the baking oven 100. The flame detection mounting seat 400 is installed on the same vertical side of the baking oven 100 where the burner mounting seat 300 is located, and the flame detection mounting seat 400 is located on the side of the burner mounting seat 300 that is deviated from the side door 110.

[0031] Because when the side door 110 is closed, there is a certain gap between the side door 110 and the box body of the baking oven 100, and it is difficult to achieve high-temperature sealing with general sealing, so there is a possibility that the flame will escape from the side door gap during the baking process. Through the above distribution of the burner mounting seat 300 and the flame detection mounting seat 400, the defect that the relevant cables of the infrared detector are easily damaged by the flame in the case of flame escape when the side door 110 is closed is improved, the operation of the flame detection related system is maintained, and the maintenance cost of the flame detection related system is reduced.

[0032] In some embodiments, please refer to Figure 3 , the flame detection mounting seat 400 is installed on the baking oven 100 in an inclined manner compared to the burner mounting seat 300, and the detection port of the flame detection mounting seat 400 is relatively close to the burner mounting seat 300, which has the effect of facilitating the infrared detector to collect the corresponding data of the flame. On the premise that the detection port of the flame detection mounting seat 400 is close enough to the burner mounting seat 300, the interference between the flame detection mounting seat 400 and the burner mounting seat 300 is avoided. The scheme of the inclined flame detection mounting seat 400 also has the advantages of being convenient for replacing and maintaining the infrared detector.

[0033] In some embodiments, please refer to Figure 3 , the flame detection mounting seat 400 is preferably installed on the baking oven 100 at an inclination of 45°.

[0034] In some embodiments, please refer toFigure 3 Similar to the baking hole 21 of the burner aligning with the nozzle 20 as described above, the detection port of the flame detection mounting seat 400 also faces the baking hole 21 of the nozzle 20 suspended at the notch 210.

[0035] In some embodiments, please refer to Figure 1 and Figure 2 , a refractory brick 140 is installed on the bottom side of the inner wall of the baking oven 100. The refractory brick 140 is located directly below the notch 210 and is used to support the nozzle 20 suspended at the notch 210.

[0036] Regarding the connection between the nozzle support arm 200 and the baking oven 100, in some embodiments, the nozzle support arm 200 is directly welded to the steel structure shell 131 of the baking oven 100. Further, please refer to Figure 1 , a rib plate 220 is welded at the corner of the nozzle support arm 200 to strengthen the structural strength of the nozzle support arm 200 through the rib plate 220.

[0037] Regarding the connection between the burner mounting seat 300 and the flame detection mounting seat 400 and the baking oven 100, in some embodiments, the burner mounting seat 300 and the flame detection mounting seat 400 are installed on the baking oven 100 by means of inlay, so as to realize the rapid installation of the burner-related structure and the infrared detector-related structure.

[0038] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the first feature is at a lower horizontal height than the second feature.

[0039] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. A baking device for an immersed nozzle of a continuous casting machine, characterized in that: include: The oven has an openable and closable side door on one vertical side of the oven body, and an opening on the top side; A nozzle support arm is fixedly connected to the baking oven, and the nozzle support arm is provided with a notch located above the baking oven for suspending the nozzle; A burner mounting seat is mounted on the baking oven, the burner mounting seat is mounted with a burner, and the burner is used to align with the baking hole of the water outlet suspended on the notch; A flame detection mounting seat is mounted on the baking oven, and the flame detection mounting seat is equipped with an infrared detector, and the infrared detector is used to detect whether the burner generates flame; The baking device is provided with a control system, which is signal-connected to the infrared detector and the burner, and is used to cut off the gas supply to the burner when the flame is extinguished.

2. The baking device according to claim 1, characterized in that: The burner mounting seat is arranged on a vertical side of the baking oven adjacent to the side-opening door, and the flame detection mounting seat is arranged on a side of the burner mounting seat deviating from the side-opening door.

3. The baking device according to claim 2, characterized in that: The flame detection mounting seat is installed on the baking oven at an angle compared to the burner mounting seat, and the detection port of the flame detection mounting seat is relatively close to the burner mounting seat.

4. The baking device according to claim 3, characterized in that: The flame detection mounting base is installed on the baking oven at an angle of 45°.

5. The baking device according to claim 4, characterized in that: The detection port of the flame detection mounting seat faces the baking hole of the water outlet suspended in the slot.

6. The baking device according to any one of claims 1 to 5, characterized in that: The box body of the baking oven comprises a steel structure shell and a refractory material layer fixed on the inner side of the steel structure shell.

7. The baking device according to claim 6, characterized in that: Clay bricks are installed on the bottom side of the inner wall of the baking oven. The clay bricks are located directly below the notch and are used to support the water outlet suspended in the notch.

8. The baking device according to claim 6, characterized in that: The nozzle support arm is welded to the steel structure shell.

9. The baking device according to claim 8, characterized in that: The nozzle support arm is welded with a rib plate at the corner.

10. The baking device according to claim 1, characterized in that: The burner mounting seat and the flame detection mounting seat are both mounted on the baking oven in an embedded manner.

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