Control method, device and equipment of refining furnace and medium

Abstract

The invention discloses a control method, device and equipment of a refining furnace and a medium, and belongs to the technical field of metallurgy. The method comprises the following steps: acquiring an image of molten steel in the refining furnace through the camera device; according to the image, the exposed area of the molten steel is determined; according to the exposed area, the turning strength of the molten steel is determined; and the argon blowing amount of the bottom of the refining furnace is adjusted according to the turning strength. According to the method, no matter what stage the smelting is, as long as the turning strength changes, the argon blowing amount needs to be correspondingly adjusted, the bottom blowing effect is improved, and the inclusion index qualification rate of a finished product is increased.

Description

Technical Field

[0001] The present invention relates to the field of metallurgical technology, and in particular to a control method, device, equipment and medium for a refining furnace. Background Art

[0002] Ladle Furnace (LF) uses electric arc heating to perform refining outside the furnace in a special ladle. Its main functions are heating, desulfurization and inclusion removal.

[0003] In the existing technology, argon gas is blown into the bottom of the LF furnace to stir the molten steel to generate eddy currents, which drives the molten steel to transfer mass and heat, thereby realizing the function of rapid heating of the electrode. The stirring of argon gas accelerates the chemical reaction between slag and steel, and improves the heating efficiency.

[0004] However, regardless of the smelting stage, argon is added at a fixed flow rate, resulting in poor bottom blowing effect and unqualified inclusion indicators in the finished product. Summary of the Invention

[0005] In view of the above problems, the present invention has been proposed to provide a control method, device, equipment and medium for a refining furnace that solves the above problems. The image of the molten steel can be obtained by a camera device, the churning intensity of the molten steel can be determined based on the image, and the amount of argon blown at the bottom of the refining furnace can be adjusted according to the churning intensity. Regardless of the stage of smelting, as long as the churning intensity changes, the amount of argon blown must be adjusted accordingly to improve the bottom blowing effect and increase the qualified rate of inclusion indicators of the finished product.

[0006] In a first aspect, the present invention provides a method for controlling a refining furnace, wherein a camera device is arranged on a cover of the refining furnace, the method comprising:

[0007] Acquiring an image of the molten steel in the refining furnace by the camera device;

[0008] determining the exposed area of the molten steel according to the image;

[0009] Determining the churning intensity of the molten steel according to the exposed area;

[0010] The amount of argon blown into the bottom of the refining furnace is adjusted according to the churning intensity.

[0011] Optionally, determining the churning intensity of the molten steel according to the exposed area includes:

[0012] The ratio of the exposed area to the preset standard area is calculated to obtain the churning intensity of the molten steel.

[0013] Optionally, adjusting the amount of argon blown at the bottom of the refining furnace according to the churning intensity includes:

[0014] If the churning intensity is greater than the first intensity threshold and less than a preset second intensity threshold, the argon blowing amount at the bottom of the refining furnace is not adjusted;

[0015] If the churning intensity is less than or equal to the first intensity threshold, increasing the argon blowing amount at the bottom of the refining furnace;

[0016] If the churning intensity is greater than or equal to the second intensity threshold, the argon blowing amount at the bottom of the refining furnace is reduced.

[0017] Optionally, the camera device includes a camera, a telescopic device, and a protective cover arranged on the furnace cover, the telescopic device is connected to the camera, and is used to drive the camera into the protective cover or withdraw it to the outside of the refining furnace through a telescopic action, and the telescopic device includes a retracted state and an extended state. The method further includes:

[0018] Obtaining the operating conditions of the refining furnace, wherein the operating conditions include electrode heating conditions, charging conditions, wire feeding conditions, and other operating conditions, wherein the other operating conditions are conditions other than the electrode heating conditions, the charging conditions, and the wire feeding conditions;

[0019] If the working condition is the electrode heating working condition, the feeding working condition or the wire feeding working condition, the telescopic device is controlled to enter the contracted state to withdraw the camera out of the refining furnace.

[0020] Optionally, a purge device is further arranged on the furnace cover to control the telescopic device to perform a contraction action to withdraw the camera out of the refining furnace. The method further includes:

[0021] The blowing device is controlled to blow toward a target area to form an air curtain in the target area. The target area is a spatial area where the telescopic device is located in the extended state.

[0022] Optionally, the camera device further includes a water cooling device, and the method further includes:

[0023] When the camera enters the protective cover, the water cooling device is controlled to cool the camera through circulating water.

[0024] Optionally, the camera device further includes an air cooling device, and the method further includes:

[0025] When the camera enters the protective cover, the air cooling device is controlled to cool the camera through compressed air.

[0026] In a second aspect, the present invention provides a control device for a refining furnace, wherein a camera device is arranged on the cover of the refining furnace, and the device comprises:

[0027] an acquisition module, configured to acquire an image of the molten steel in the refining furnace through the camera device;

[0028] A first determining module is configured to determine an exposed area of the molten steel according to the image;

[0029] A second determining module is configured to determine the churning intensity of the molten steel according to the exposed area;

[0030] The regulating module is used to regulate the argon blowing amount at the bottom of the refining furnace according to the churning intensity.

[0031] In a third aspect, the present invention provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0032] In a fourth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0033] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0034] The embodiments of the present invention provide a control method, device, equipment and medium for a refining furnace. The method captures images of molten steel in the refining furnace through a camera device, and understands changes in the molten steel inside the refining furnace through the images. The method determines the exposed area of the molten steel based on the images, and uses the exposed area to reflect the churning of the molten steel. The method determines the churning intensity of the molten steel based on the exposed area, and quantifies the churning state of the molten steel based on the churning intensity. The method adjusts the amount of argon blown at the bottom of the refining furnace based on the churning intensity. When the churning intensity changes, the amount of argon blown at the bottom of the refining furnace is adjusted accordingly, thereby improving the uniformity of the molten steel, improving the churning effect, and increasing the qualified rate of inclusion indicators of the finished product obtained by smelting.

[0035] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0037] Figure 1 This is a flow chart of a control method for a refining furnace provided in this embodiment;

[0038] Figure 2 This is a structural block diagram of a control device for a refining furnace provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0040] Figure 1 This is a flow chart of a control method for a refining furnace provided by an embodiment of the present invention. Figure 1 As shown, the method includes:

[0041] Step S110: Acquire an image of the molten steel in the refining furnace through a camera device.

[0042] In an embodiment of the present application, a camera is mounted on the roof of a refining furnace and aimed at the molten steel to capture images of the molten steel. The camera can be connected to monitoring equipment in a main control room via a high-temperature resistant network cable to transmit the captured images to the monitoring equipment. The high-temperature resistant network cable can also be equipped with a high-temperature protective sleeve to enhance its heat resistance. The monitoring equipment can then display the received images on a display terminal.

[0043] Step S120: Determine the exposed area of the molten steel according to the image.

[0044] In an embodiment of the present application, an image is identified by image recognition technology to identify the partial area of the molten steel surface that is not covered by slag or other coverings, thereby obtaining the exposed area of the molten steel.

[0045] Step S130: Determine the churning intensity of the molten steel according to the exposed area.

[0046] In the embodiments of the present application, the exposed area can reflect the churning state of the molten steel, and the churning state can be quantified by the churning intensity to reflect the intensity of the churning state. For example, the greater the churning intensity, the more intense the churning state of the molten steel; the smaller the churning intensity, the weaker the churning state of the molten steel.

[0047] Step S140: Adjust the argon blowing amount at the bottom of the refining furnace according to the churning intensity.

[0048] In the examples of this application, churning of the molten steel is caused by blowing argon into the bottom of the refining furnace. Excessive churning indicates excessive stirring, which can lead to oxidation and increased inclusions. Too little churning indicates poor stirring, resulting in poor uniformity. Therefore, adjusting the amount of argon blown into the bottom of the refining furnace based on the churning intensity can adjust the churning state and stirring effect of the molten steel, resulting in a high qualified inclusion index rate in the finished product.

[0049] Optionally, step S130 includes:

[0050] The ratio of the exposed area to the preset standard area is calculated to obtain the churning strength of the molten steel.

[0051] In the embodiment of the present application, the exposed area is compared with the standard area. If the exposed area is larger than the standard area, it means that the molten steel is churning a bit violently; if the exposed area is smaller than the standard area, it means that the molten steel is not churning sufficiently. Therefore, the ratio of the exposed area to the standard area can be used as the churning intensity of the molten steel, and the churning state of the molten steel can be quantified by the ratio.

[0052] Optionally, step S140 includes:

[0053] If the churning intensity is greater than the first intensity threshold and less than the preset second intensity threshold, the amount of argon blowing at the bottom of the refining furnace will not be adjusted; if the churning intensity is less than or equal to the first intensity threshold, the amount of argon blowing at the bottom of the refining furnace will be increased; if the churning intensity is greater than or equal to the second intensity threshold, the amount of argon blowing at the bottom of the refining furnace will be reduced.

[0054] In the embodiment of the present application, if the churning intensity is greater than a first intensity threshold and less than a preset second intensity threshold, the churning state of the molten steel is relatively appropriate, and there is no need to adjust the amount of argon blown at the bottom of the refining furnace. If the churning intensity is less than or equal to the first intensity threshold, the churning of the molten steel is insufficient, and the amount of argon blown at the bottom of the refining furnace needs to be increased to enhance the churning effect of the molten steel. If the churning intensity is greater than or equal to the second intensity threshold, the churning of the molten steel is too intense, and the amount of argon blown at the bottom of the refining furnace needs to be reduced to reduce the churning effect of the molten steel.

[0055] In the embodiment of the present application, the increase and decrease of the argon blowing amount can also be preset to increase the argon blowing amount at the bottom of the refining furnace, including:

[0056] The current argon blowing amount of the refining furnace is determined; and the sum of the current argon blowing amount and the increased amount is used as a first target argon blowing amount, and the argon blowing amount at the bottom of the refining furnace is controlled to be the first target argon blowing amount.

[0057] Reduce the amount of argon blown into the bottom of the refining furnace, including:

[0058] The current argon blowing amount of the refining furnace is determined; and the difference between the current argon blowing amount and the reduced amount is used as a second target argon blowing amount, and the argon blowing amount at the bottom of the refining furnace is controlled to be the second target argon blowing amount.

[0059] The increment includes a first increment, a second increment, and a third increment, which increase in sequence, and the decrement includes a first decrement, a second decrement, and a third decrement, which increase in sequence. Therefore, if the billowing intensity is less than or equal to the first intensity threshold and greater than the third intensity threshold, the first target argon purge amount is the current argon purge amount plus the first increment; if the billowing intensity is less than or equal to the third intensity threshold and greater than the fourth intensity threshold, the first target argon purge amount is the current argon purge amount plus the second increment; if the billowing intensity is less than or equal to the fourth intensity threshold, the first target argon purge amount is the current argon purge amount plus the third increment. If the billowing intensity is greater than or equal to the second intensity threshold and less than the fifth intensity threshold, the second target argon purge amount is the current argon purge amount minus the first decrement; if the billowing intensity is greater than or equal to the fifth intensity threshold and less than the sixth intensity threshold, the second target argon purge amount is the current argon purge amount minus the second decrement; and if the billowing intensity is greater than or equal to the sixth intensity threshold, the second target argon purge amount is the current argon purge amount minus the third decrement.

[0060] Among them, the sixth intensity threshold>the fifth intensity threshold>the second intensity threshold>the first intensity threshold>the third intensity threshold>the fourth intensity threshold.

[0061] Exemplarily, the first intensity threshold is 0.8, the second intensity threshold is 1.3, the third intensity threshold is 0.7, the fourth intensity threshold is 0.5, the fifth intensity threshold is 1.5, and the sixth intensity threshold is 1.7; the first increase is 10N L / min, the second increase is 20N L / min, and the third increase is 50N L / min, the first decrease is 10N L / min, the second decrease is 20NL / min, and the third decrease is 50N L / min.

[0062] Optionally, the camera device includes a camera, a telescopic device, and a protective cover arranged on the furnace cover. The telescopic device is connected to the camera and is used to drive the camera into the protective cover or withdraw it to the outside of the refining furnace through a telescopic action. The telescopic device includes a retracted state and an extended state. When the telescopic device is in the retracted state, the camera withdraws to the outside of the refining furnace to further prevent splashing molten steel or other impurities from damaging the camera; when the telescopic device is in the extended state, the camera is in the protective cover, and images of the molten steel can be captured. The method also includes:

[0063] The first step is to obtain the working conditions of the refining furnace, which include electrode heating conditions, charging conditions, wire feeding conditions and other conditions. Other conditions are conditions other than electrode heating conditions, charging conditions and wire feeding conditions.

[0064] In the second step, if the working condition is electrode heating, feeding or wire feeding, the telescopic device is controlled to enter a contracted state to withdraw the camera out of the refining furnace.

[0065] If the working condition is other working conditions, the telescopic device is controlled to enter the extended state to extend the camera into the protective cover.

[0066] In this embodiment of the present application, a protective cover placed on the furnace cover protects the camera from damage by splashing molten steel or other impurities. The camera is extended and retracted by a telescopic mechanism. The protective cover can be provided with an entrance and exit for the camera to enter and exit. The entrance and exit dimensions can be designed based on the size of the camera. For example, the entrance and exit dimensions are 140mm*150mm.

[0067] The refining process in a refining furnace uses arc heating and argon blowing to precisely control the molten steel's temperature and homogenize its composition, thereby removing inclusions, reducing gas content, and achieving desulfurization. Therefore, during electrode heating, charging, or wire feeding, the molten steel can react violently, causing slag to splash, which can damage the camera lens. In this case, a telescopic device can be used to retract the camera outside the refining furnace to protect it and extend its service life. The camera can be a high-temperature, high-definition, pinhole (elbow) industrial camera.

[0068] In an embodiment of the present application, the telescopic device is controlled by a programmable logic controller (PLC) and a relay. The telescopic device includes a cylinder and a telescopic rod. The camera is mechanically connected to the telescopic rod. The cylinder is used to push the telescopic rod to move, and the movement of the telescopic rod drives the extension and retraction of the camera. The telescopic device includes manual control function and automatic control function; the manual control function is divided into on-site control and main control room control. On-site control is achieved through two buttons on the on-site control box, and the two buttons are used to control the extension and retraction of the telescopic device respectively; the main control room control is controlled through the control screen on the display terminal. Triggering the buttons in the control screen realizes the extension and retraction control of the telescopic device. The automatic control function controls the extension and retraction of the telescopic device according to the working conditions of the refining furnace.

[0069] The control box is connected to the monitoring equipment in the main control room through an industrial switch. The monitoring equipment includes a display terminal for displaying images and data.

[0070] Optionally, a purge device is further arranged on the furnace cover. After the second step, the method further comprises:

[0071] The third step is to control the blowing device to blow towards the target area to form an air curtain in the target area, where the target area is the spatial area where the telescopic device is in the extended state.

[0072] In the embodiment of the present application, the telescopic device will be fixedly passed through the target area in the refining furnace during the telescopic process. When the telescopic device is in the extended state, the telescopic device will be in the target area; when the telescopic device is in the retracted state, the telescopic device will withdraw from the refining furnace and leave the target area, making the target area empty. After the target area becomes empty, the splashing slag may accumulate in the target area. When the telescopic device wants to extend next time, the accumulated molten steel will block the extension of the telescopic device, making it impossible for the telescopic device to send the camera into the protective cover. Therefore, in order to prevent splashing slag from entering the target area, after the camera exits the refining furnace, the purge device is controlled to purge the target area to form an air curtain in the target area, which blocks the splashing molten steel from entering the target area.

[0073] The purge device is supplied with medium-pressure nitrogen. By controlling the nitrogen flow rate, the barrier strength of the air curtain can be controlled. For example, during electrode heating, charging, or wire feeding, the purge device is controlled to operate at a first flow rate; in other operating conditions, it is controlled to operate at a second flow rate. The purge device is disabled when the refining furnace is not performing smelting operations, reducing energy consumption and lowering costs. The first flow rate is greater than the second flow rate, and the barrier strength of the air curtain is higher at the first flow rate.

[0074] Optionally, the camera device further includes a water cooling device, and the method further includes:

[0075] When the camera enters the protective cover, the water cooling device is controlled to cool the camera through circulating water.

[0076] In an embodiment of the present application, circulating water is connected to the protective cover to cool the camera and prevent damage to the camera caused by overheating of the ambient temperature.

[0077] Optionally, the camera device further includes an air cooling device, and the method further includes:

[0078] When the camera enters the protective cover, the air cooling device is controlled to cool the camera by compressed air.

[0079] In the embodiment of the present application, the air cooling device uses compressed air to purge and cool the camera, removing some of the heat from the protective cover. The air cooling device and the water cooling device can be integrated into one unit. A pressure sensor can also be used to detect the pressure of the compressed air. If the pressure is outside the normal pressure range, the air cooling device is controlled to stop operation.

[0080] The air cooling device is connected to a control box, and is powered by a power supply in the control box and controlled by a controller in the control box. The air cooling device may be a cold dryer.

[0081] The method in the embodiment of the present application can effectively control the bottom blowing of argon in the refining furnace, reduce the unqualified rate of inclusion detection, and reduce the occurrence of accidents. It reduces 0.25 accidents of inclusion failure judgment caused by operation per month. Based on the loss of 500 yuan per ton of steel, the monthly cost consumption is reduced by about 40,000 yuan, and the cumulative annual cost loss is reduced by about 480,000 yuan. The argon flow control is realized to reduce costs and increase efficiency, and the argon consumption per ton of steel is reduced by 1Nm 3 / t, argon cost 140 yuan / Nm 3 , achieving an annual output of 2 million tons and saving 280,000 yuan in costs per year, for a total economic benefit of 480,000 yuan + 280,000 yuan = 760,000 yuan. This reduces labor intensity, ultimately ensuring the stability of molten steel composition and quality; and enabling intelligent refining control to promote intelligent and high-quality development for steel companies.

[0082] Based on the same inventive concept, an embodiment of the present invention further provides a control device for a refining furnace, wherein a camera device is arranged on the cover of the refining furnace. Figure 2 This is a structural block diagram of a control device for a refining furnace provided by an embodiment of the present invention. Figure 2 As shown, the apparatus 200 includes an acquisition module 201 , a first determination module 202 , a second determination module 203 and an adjustment module 204 .

[0083] An acquisition module 201 is configured to acquire an image of the molten steel in the refining furnace through a camera device;

[0084] A first determining module 202 is configured to determine the exposed area of the molten steel based on the image;

[0085] The second determining module 203 is used to determine the churning intensity of the molten steel according to the exposed area;

[0086] The regulating module 204 is used to regulate the amount of argon blown into the bottom of the refining furnace according to the churning intensity.

[0087] Optionally, the second determining module 203 is further configured to:

[0088] The ratio of the exposed area to the preset standard area is calculated to obtain the churning strength of the molten steel.

[0089] Optionally, the adjustment module 204 is further configured to:

[0090] If the churning intensity is greater than the first intensity threshold and less than the preset second intensity threshold, the argon blowing amount at the bottom of the refining furnace is not adjusted;

[0091] If the churning intensity is less than or equal to the first intensity threshold, increasing the amount of argon blown into the bottom of the refining furnace;

[0092] If the churning intensity is greater than or equal to the second intensity threshold, the argon blowing amount at the bottom of the refining furnace is reduced.

[0093] Optionally, the camera device includes a camera, a telescopic device, and a protective cover arranged on the furnace cover. The telescopic device is connected to the camera and is used to drive the camera into the protective cover or withdraw it to the outside of the refining furnace through a telescopic action. The telescopic device includes a retracted state and an extended state. The device 200 also includes a first control module for:

[0094] Obtain the working conditions of the refining furnace, which include electrode heating conditions, charging conditions, wire feeding conditions, and other conditions. Other conditions are conditions other than electrode heating conditions, charging conditions, and wire feeding conditions.

[0095] If the working condition is electrode heating, charging or wire feeding, the telescopic device is controlled to enter a retracted state to withdraw the camera out of the refining furnace.

[0096] Optionally, a purge device is further arranged on the furnace cover to control the telescopic device to perform a contraction action to withdraw the camera out of the refining furnace. The device 200 further includes a second control module for:

[0097] The blowing device is controlled to blow toward the target area to form an air curtain in the target area. The target area is the spatial area where the telescopic device is located when it is in the extended state.

[0098] Optionally, the camera device further includes a water cooling device, and the device 200 further includes a third control module, configured to:

[0099] When the camera enters the protective cover, the water cooling device is controlled to cool the camera through circulating water.

[0100] Optionally, the apparatus 200 further includes a fourth control module, configured to:

[0101] When the camera enters the protective cover, the air cooling device is controlled to cool the camera by compressed air.

[0102] It can be understood that the device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0103] An embodiment of the present invention further provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

[0104] The processor may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application, or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above chips.

[0105] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory may include removable or non-removable (or fixed) media. Where appropriate, the memory may be internal or external to the electronic device. In certain embodiments, the memory may be a non-volatile solid-state memory.

[0106] In one embodiment, the memory may be a read-only memory (ROM). In one embodiment, the ROM may be a mask-programmable ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0107] The processor implements any one of the control methods for the refining furnace in the above embodiments by reading and executing computer program instructions stored in the memory.

[0108] In one example, the electronic device may further include a communication interface and a bus. The processor, memory, and communication interface are connected via the bus and communicate with each other. The communication interface is primarily used to enable communication between the various modules, devices, units, and / or devices in the embodiments of this application. Where appropriate, the bus may include one or more buses.

[0109] In addition, in conjunction with the refinery control method in the above-mentioned embodiments, embodiments of the present invention may provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when executed by a processor, the computer program instructions implement any of the refinery control methods in the above-mentioned embodiments.

[0110] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. The storage medium can be a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD). The storage medium can also include a combination of the above-mentioned types of memory.

[0111] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0112] The embodiments of the present invention provide a control method, device, equipment and medium for a refining furnace. The method captures images of molten steel in the refining furnace through a camera device, and understands changes in the molten steel inside the refining furnace through the images. The method determines the exposed area of the molten steel based on the images, and uses the exposed area to reflect the churning of the molten steel. The method determines the churning intensity of the molten steel based on the exposed area, and quantifies the churning state of the molten steel based on the churning intensity. The method adjusts the amount of argon blown at the bottom of the refining furnace based on the churning intensity. When the churning intensity changes, the amount of argon blown at the bottom of the refining furnace is adjusted accordingly, thereby improving the uniformity of the molten steel, improving the churning effect, and increasing the qualified rate of inclusion indicators of the finished product obtained by smelting.

[0113] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0114] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the invention.

[0115] It should be noted that the above embodiments illustrate rather than limit the invention, and that a person skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The present invention may be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

Claims

1. A method for controlling a refining furnace, characterized in that: A camera device is arranged on the cover of the refining furnace, and the method includes: Acquiring an image of the molten steel in the refining furnace by the camera device; determining the exposed area of the molten steel according to the image; Determining the churning intensity of the molten steel according to the exposed area; The amount of argon blown into the bottom of the refining furnace is adjusted according to the churning intensity.

2. The control method of the refining furnace according to claim 1, characterized in that: Determining the churning intensity of the molten steel according to the exposed area includes: The ratio of the exposed area to the preset standard area is calculated to obtain the churning intensity of the molten steel.

3. The control method of the refining furnace according to claim 1, characterized in that: The step of adjusting the argon blowing amount at the bottom of the refining furnace according to the churning intensity comprises: If the churning intensity is greater than the first intensity threshold and less than a preset second intensity threshold, the argon blowing amount at the bottom of the refining furnace is not adjusted; If the churning intensity is less than or equal to the first intensity threshold, increasing the argon blowing amount at the bottom of the refining furnace; If the churning intensity is greater than or equal to the second intensity threshold, the argon blowing amount at the bottom of the refining furnace is reduced.

4. The control method of the refining furnace according to claim 1, characterized in that: The camera device includes a camera, a telescopic device, and a protective cover arranged on the furnace cover. The telescopic device is connected to the camera and is used to drive the camera into the protective cover or withdraw it to the outside of the refining furnace through a telescopic action. The telescopic device includes a retracted state and an extended state. The method further includes: Obtaining the operating conditions of the refining furnace, wherein the operating conditions include electrode heating conditions, charging conditions, wire feeding conditions, and other operating conditions, wherein the other operating conditions are conditions other than the electrode heating conditions, the charging conditions, and the wire feeding conditions; If the working condition is the electrode heating working condition, the feeding working condition or the wire feeding working condition, the telescopic device is controlled to enter the contracted state to withdraw the camera out of the refining furnace.

5. The control method of the refining furnace according to claim 4, characterized in that: The furnace cover is further provided with a purge device, which controls the telescopic device to perform a contraction action to withdraw the camera out of the refining furnace. The method further comprises: The blowing device is controlled to blow toward a target area to form an air curtain in the target area. The target area is a spatial area where the telescopic device is located in the extended state.

6. The control method of the refining furnace according to claim 4, characterized in that: The camera device further includes a water cooling device, and the method further includes: When the camera enters the protective cover, the water cooling device is controlled to cool the camera through circulating water.

7. The control method of the refining furnace according to claim 4, characterized in that: The camera device further includes an air cooling device, and the method further includes: When the camera enters the protective cover, the air cooling device is controlled to cool the camera through compressed air.

8. A control device for a refining furnace, characterized in that: A camera device is arranged on the cover of the refining furnace, and the device includes: an acquisition module, configured to acquire an image of the molten steel in the refining furnace through the camera device; A first determining module is configured to determine an exposed area of the molten steel according to the image; A second determining module is configured to determine the churning intensity of the molten steel according to the exposed area; The regulating module is used to regulate the argon blowing amount at the bottom of the refining furnace according to the churning intensity.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method according to any one of claims 1 to 7.

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