Method for preventing continuous casting and rolling equipment from cracking, heat exchange system and electronic equipment
By utilizing the waste heat from the furnace roll cooling water system to heat the crystallizer on the continuous casting and rolling equipment, the problem of cracking in the continuous casting and rolling equipment was solved, achieving low-energy consumption and high-efficiency equipment protection.
Patent Information
- Application Number
- CN202511863845.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-11
- Publication Date
- 2026-03-03
AI Technical Summary
After a long period of shutdown in winter, the temperature of the cooling water in the crystallizer is low, which makes the billet prone to cracking. Traditional heating methods are energy-intensive, require large equipment investment, and are complicated to operate.
Before casting begins on the continuous casting and rolling equipment, the cooling water of the furnace roll cooling water system is heated and its heat is transferred to the crystallizer cooling water system. The residual heat of the furnace roll cooling water system is used to heat the crystallizer. Heating is stopped once the crystallizer cooling water reaches the target temperature, and casting is then carried out.
It effectively reduces the probability of cracking when the continuous casting equipment starts casting, reduces the accident rate, and requires no additional energy consumption and is easy to operate.
Smart Images
Figure CN121589260A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of strip steel production technology, and in particular to a method, heat exchange system and electronic equipment for preventing cracking in continuous casting and rolling equipment. Background Technology
[0002] Currently, after a long period of shutdown in winter, the cooling water temperature of the crystallizer is low and the cold zone is too strong, which makes the billet prone to cracking when the continuous casting and rolling machine starts casting. In severe cases, it can lead to steel leakage or even accidents.
[0003] However, the traditional method to avoid cracks is to heat the cooling water of the crystallizer using external heating equipment, but this method has problems such as high energy consumption, large equipment investment, and complicated operation. Summary of the Invention
[0004] This application provides a method, heat exchange system, and electronic equipment for preventing cracking in continuous casting and rolling equipment. The embodiments provided in this application solve the technical problems of high energy consumption, large equipment investment, and complex operation in the prior art.
[0005] In a first aspect, this application provides a method for preventing cracking in continuous casting and rolling equipment, applied to a heat exchange system on a continuous casting and rolling production line. The heat exchange system includes a heat exchange device, a heating device, a furnace roll heat exchange water assembly, a crystallizer heat exchange water assembly, a crystallizer cooling water subsystem, a furnace roll cooling water subsystem, and a crystallizer to be heated. The heating device is fixedly installed in the furnace roll cooling water subsystem. The furnace roll cooling water subsystem is connected to the furnace roll heat exchange water assembly through the heating device. The furnace roll heat exchange water assembly is connected to the crystallizer heat exchange water assembly through the heat exchange device. The crystallizer heat exchange water assembly is connected to the crystallizer cooling water subsystem through the crystallizer to be heated. The method for preventing cracking in continuous casting and rolling equipment includes: Before the continuous casting and rolling equipment on the continuous casting and rolling production line starts casting strip steel, the first cooling water in the furnace roll cooling water subsystem is heated based on the heating equipment, and the heated first cooling water is transferred to the furnace roll heat exchange water assembly. Based on the heat exchange device, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange assembly, and the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined. When the actual temperature of the target cooling water reaches the target casting temperature, heating of the first cooling water is stopped, and casting of the strip is started to prevent cracking of the continuous casting and rolling equipment.
[0006] In one feasible implementation, the step of transferring the heat from the heated first cooling water to the crystallizer cooling water subsystem via the second cooling water in the crystallizer heat exchange assembly, based on the heat exchange device, and determining the actual temperature of the target cooling water in the crystallizer cooling water subsystem, includes: Based on the preset start-up heating time and the heat exchange rate of the heat exchange equipment, the flow rate at which the heat of the first cooling water after heating is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange assembly is determined. Based on the flow rate and the capacity of the target cooling water in the crystal cooling water subsystem, the actual temperature of the target cooling water in the crystal cooling water subsystem is determined.
[0007] In one feasible implementation, the target pouring temperature is determined in the following manner: Based on the target steel grade corresponding to the strip and the preset steel grade-casting temperature mapping table, the target casting temperature corresponding to the strip is determined.
[0008] In one feasible implementation, the target pouring temperature is determined in the following manner: Determine whether the target steel grade corresponding to the strip exists in the preset steel grade-casting temperature mapping table; If it exists, determine the target casting temperature corresponding to the target steel grade.
[0009] In a second aspect, this application provides a heat exchange system using the method for preventing cracking in continuous casting and rolling equipment as described in the first aspect. The heat exchange system includes a heat exchange device, a heating device, a furnace roll heat exchange water assembly, a crystallizer heat exchange water assembly, a crystallizer cooling water subsystem, a furnace roll cooling water subsystem, and a crystallizer to be heated. The heating device is fixedly installed within the furnace roll cooling water subsystem. The furnace roll cooling water subsystem is connected to the furnace roll heat exchange water assembly via the heating device. The furnace roll heat exchange water assembly is connected to the crystallizer heat exchange water assembly via the heat exchange device. The crystallizer heat exchange water assembly is connected to the crystallizer cooling water subsystem via the crystallizer to be heated.
[0010] In one feasible implementation, the heat exchange system further includes a first valve and a second valve, wherein the first valve is installed on the connecting pipe between the furnace roller cooling water subsystem and the heat exchange equipment; The second valve is installed on the connecting pipe between the crystallizer cooling water subsystem and the heat exchange equipment. Both the first valve and the second valve are bidirectional valves.
[0011] In one feasible implementation, the heat exchange system further includes a first flow meter and a second flow meter, wherein the first flow meter is installed on the connecting pipe between the furnace roller cooling water subsystem and the heat exchange equipment; The second flow meter is installed on the connecting pipe between the crystallizer cooling water subsystem and the heat exchange equipment.
[0012] In one feasible implementation, the heat exchange system further includes a temperature sensor installed on the connecting pipe between the crystallizer cooling water subsystem and the crystallizer to be heated.
[0013] In a third aspect, this application provides an electronic device including a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus, and the machine-readable instructions are executed by the processor to perform the steps of the method for preventing cracking in a continuous casting and rolling equipment as described above.
[0014] In a fourth aspect of this application, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, performs the steps of the method for preventing cracking in a continuous casting and rolling equipment as described above.
[0015] The method, heat exchange system, and electronic equipment for preventing cracking in continuous casting and rolling equipment provided in this application, compared with the prior art, involve heating the first cooling water in the furnace roll cooling water subsystem before the continuous casting and rolling equipment starts casting strip steel on the continuous casting and rolling production line, based on heating equipment, and then transferring the heated first cooling water to the furnace roll heat exchange water assembly; based on the heat exchange equipment, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange assembly, and the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined; when the actual temperature of the target cooling water reaches the target casting temperature, the heating of the first cooling water is stopped, and the casting of strip steel is started, thereby preventing cracking of the continuous casting and rolling equipment. This application utilizes the residual heat of the furnace roll cooling water subsystem to heat the crystallizer to be heated, without consuming additional energy, and is simple to operate and easy to implement, effectively reducing the probability of cracking when the continuous casting equipment starts casting, thereby reducing the accident rate. Attached Figure Description
[0016] Figure 1 A flowchart illustrating a method for preventing cracking in a continuous casting and rolling equipment according to an embodiment of this application is shown. Figure 2 This illustration shows a connection diagram of a heat exchange system provided in an embodiment of this application; Figure 3 This paper shows a structural block diagram of a device for preventing cracking in continuous casting and rolling equipment according to an embodiment of this application; Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of this application is shown.
[0017] Figure 2 and Figure 4 The correspondence between the figure labels and figure titles in the accompanying drawings is as follows: 10 Heat exchange system; 100 Heating equipment; 110 Furnace roller cooling water subsystem; 120 Furnace roller heat exchange water assembly; 200 Crystallizer to be heated; 210 Crystallizer cooling water subsystem; 220 Crystallizer heat exchange water assembly; 300 Heat exchange equipment; 400 First valve; 410 First flow meter; 500 Second valve; 510 Second flow meter; 600 Temperature sensor; 3 Device for preventing cracking of continuous casting and rolling equipment; 301 First determination module; 302 Second determination module; 303 Third determination module; 500 Vehicle fault determination device; 510 Determination module; 4 Electronic equipment; 401 Processor; 402 Memory; 403 Bus. Detailed Implementation
[0018] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.
[0019] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element. The term "two or more" includes two or more cases.
[0020] First, the applicable application scenarios of this application will be introduced. The embodiments provided in this application are applicable to the field of strip steel production technology.
[0021] Currently, the traditional method to avoid cracks is to heat the cooling water of the crystallizer using external heating equipment. However, this method has problems such as high energy consumption, large equipment investment, and complex operation.
[0022] Based on this, the embodiments of this application provide a method, heat exchange system and electronic equipment for preventing cracking in continuous casting and rolling equipment. The embodiments provided by this application solve the technical problems of high energy consumption, large equipment investment and complex operation in the prior art.
[0023] Figure 1 A flowchart illustrating a method for preventing cracking in a continuous casting and rolling equipment, as provided in an embodiment of this application, is shown. Figure 1 As shown, a method for preventing cracking in continuous casting and rolling equipment is applied to the heat exchange system of a continuous casting and rolling production line. The heat exchange system includes heat exchange equipment, heating equipment, furnace roll heat exchange water assembly, crystallizer heat exchange water assembly, crystallizer cooling water subsystem, furnace roll cooling water subsystem, and a crystallizer to be heated. The heating equipment is fixedly installed in the furnace roll cooling water subsystem. The furnace roll cooling water subsystem is connected to the furnace roll heat exchange water assembly through the heating equipment. The furnace roll heat exchange water assembly is connected to the crystallizer heat exchange water assembly through the heat exchange equipment. The crystallizer heat exchange water assembly is connected to the crystallizer cooling water subsystem through the crystallizer to be heated.
[0024] In the embodiments provided in this application, the cooling water in the furnace roller cooling water subsystem is heated by heating the heat exchange equipment. After the cooling water is heated, the cooling water in the furnace roller cooling water subsystem is controlled to flow into the furnace roller heat exchange water assembly connected to the heat exchange equipment. The heat of the cooling water in the furnace roller heat exchange water assembly is transferred to the crystallizer cooling water subsystem through the heat exchange equipment, so that the crystallizer to be heated is heated.
[0025] Among them, the crystallizer in the continuous casting and rolling equipment is a key component in the continuous casting process. It is used to solidify molten steel into the required shape, that is, to provide a cooling channel for molten steel, so that the steel gradually cools down from the liquid state and begins to solidify, forming the required cross-sectional shape.
[0026] Methods to prevent cracking in continuous casting and rolling equipment include the following steps: S101. Before the continuous casting and rolling equipment on the continuous casting and rolling production line starts casting strip steel, the first cooling water in the furnace roll cooling water subsystem is heated based on the heating equipment, and the heated first cooling water is transferred to the furnace roll heat exchange water assembly.
[0027] In this step, the embodiment provided in this application starts the heating equipment in advance before the continuous casting and rolling equipment on the continuous casting and rolling production line starts casting the strip steel, thereby heating the first cooling water in the furnace roll cooling water subsystem, and diverting the first cooling water from the roll cooling water subsystem to the furnace roll heat exchange water assembly through the valve.
[0028] S102. Based on the heat exchange equipment, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange component, and the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined.
[0029] In this step, after determining that the first cooling water is diverted from the roller cooling water subsystem to the furnace roller heat exchange water assembly, the heat of the first cooling water in the furnace roller heat exchange water assembly is transferred to the crystallizer cooling water subsystem through the heat exchange equipment, so as to increase the actual temperature of the target cooling water in the crystallizer cooling water subsystem, thereby heating the crystallizer to be heated, so as to prevent cracking of the continuous casting and rolling equipment.
[0030] For example, based on the preset start-up heating time and the heat exchange rate of the heat exchange equipment, the flow rate of the heat of the first cooling water after heating is determined to be transferred to the crystallizer cooling water subsystem by the second cooling water in the crystallizer heat exchange component; based on the flow rate and the capacity of the target cooling water in the crystallizer cooling water subsystem, the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined.
[0031] Understandably, in the embodiments provided in this application, a preset start-up heating time for casting strip steel is first set, then the heat exchange rate of the selected heat exchange equipment is determined, and then, based on the preset start-up heating time and the heat exchange rate of the heat exchange equipment, the flow rate of the heat of the first cooling water after heating is determined to be transferred from the second cooling water in the crystallizer heat exchange component to the crystallizer cooling water subsystem. At the same time, the flow rate of the cooling water in the furnace roller cooling water subsystem flowing into the furnace roller heat exchange water component is calculated, and based on the flow rate of the heat of the first cooling water transferred from the second cooling water in the crystallizer heat exchange component to the crystallizer cooling water subsystem, the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined in real time.
[0032] In one embodiment provided in this application, the actual temperature of the target cooling water in the crystallizer cooling water subsystem can be determined by a temperature sensor installed inside the crystallizer cooling water subsystem.
[0033] For example, the embodiments provided in this application can determine the target casting temperature in the following way: based on the target steel grade corresponding to the strip and the preset steel grade-casting temperature mapping table, the target casting temperature corresponding to the strip is determined.
[0034] In the above-described embodiments, the following steps are taken: determining whether the target steel grade corresponding to the strip exists in the preset steel grade-casting temperature mapping table; if it exists, determining the target casting temperature corresponding to the target steel grade.
[0035] In the embodiments provided in this application, different steel grades correspond to different casting temperatures. For example, low-carbon steel requires a lower casting temperature, while medium-carbon steel and high-carbon steel require a higher casting temperature.
[0036] Here, in the embodiments provided in this application, when it is determined that the target steel grade corresponding to the strip does not exist in the preset steel grade-casting temperature mapping table, the target casting temperature corresponding to the target steel grade will be reset according to the operator's work experience or the experience value of experimental data, and the corresponding target casting temperature will be stored in the preset steel grade-casting temperature mapping table to realize the update of the preset steel grade-casting temperature mapping table.
[0037] In the embodiments provided in this application, the target pouring temperature can be customized and selected according to different application scenarios. The temperature range of the target pouring temperature in this application can be specifically set to 29-32 degrees Celsius.
[0038] S103. When the actual temperature of the target cooling water reaches the target casting temperature, stop heating the first cooling water and start casting the strip steel to prevent cracking of the continuous casting and rolling equipment.
[0039] In this step, the embodiment provided in this application closes the valves between the crystallizer heat exchange water assembly and the crystallizer cooling water subsystem, as well as the valves between the furnace roll heat exchange water assembly and the furnace roll cooling water subsystem, when the actual temperature of the target cooling water reaches the target casting temperature, and simultaneously stops heating the first cooling water and starts casting the strip steel to prevent cracking of the continuous casting and rolling equipment.
[0040] The method for preventing cracking in continuous casting and rolling equipment provided in this application, compared with the prior art, involves heating the first cooling water in the furnace roll cooling water subsystem before the continuous casting and rolling equipment starts casting strip steel on the continuous casting and rolling production line, based on a heating device, and then transferring the heated first cooling water to the furnace roll heat exchange water assembly; based on the heat exchange device, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange assembly, and the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined; when the actual temperature of the target cooling water reaches the target casting temperature, the heating of the first cooling water is stopped, and the casting of strip steel is started, thereby preventing cracking of the continuous casting and rolling equipment. This application utilizes the residual heat of the furnace roll cooling water subsystem to heat the crystallizer to be heated, without consuming additional energy, and is simple to operate and easy to implement, effectively reducing the probability of cracking when the continuous casting equipment starts casting, thereby reducing the accident rate.
[0041] Figure 2 A connection diagram of a heat exchange system provided in an embodiment of this application is shown. Figure 2 As shown, the heat exchange system 10 includes a heat exchange device 300, a heating device 100, a furnace roller heat exchange water assembly 120, a crystallizer heat exchange water assembly 220, a crystallizer cooling water subsystem 210, a furnace roller cooling water subsystem 110, and a crystallizer 200 to be heated. The heating device 100 is fixedly installed in the furnace roller cooling water subsystem 110. The furnace roller cooling water subsystem 110 is connected to the furnace roller heat exchange water assembly 120 through the heating device 100. The furnace roller heat exchange water assembly 120 is connected to the crystallizer heat exchange water assembly 220 through the heat exchange device 300. The crystallizer heat exchange water assembly 220 is connected to the crystallizer cooling water subsystem 210 through the crystallizer 200 to be heated.
[0042] It should be noted that the type of heat exchange device 300 in the embodiments provided in this application can be customized and used according to different application scenarios. This application can use plate heat exchangers or shell and tube heat exchangers.
[0043] In the above, the furnace roller cooling water subsystem 110 and the crystallizer cooling water subsystem 210 are connected by heat exchange equipment 300 to form a closed loop.
[0044] In the embodiments provided in this application, the heating device 100 can be a heating furnace. In the embodiments provided in this application, the furnace roller cooling water subsystem 110 is drawn from the heating device 100 to form a circulation loop, and the cooling water in the furnace roller heat exchange water assembly 120 is drawn from the furnace roller cooling water subsystem 110 and connected to the heat exchange device 300 to form a circulation loop.
[0045] Here, in the embodiment provided in this application, the crystallizer cooling water subsystem 210 is connected to the right side of the crystallizer 200 to be heated, forming a circulation loop. The cooling water in the crystallizer heat exchange water assembly 220 is drawn out from the crystallizer cooling water subsystem 210 and connected to the heat exchange device 300, forming another circulation loop.
[0046] For example, the heat exchange system 10 also includes a first valve 400 and a second valve 500. The first valve 400 is installed on the connecting pipe between the furnace roller cooling water subsystem 110 and the heat exchange device 300; the second valve 500 is installed on the connecting pipe between the crystallizer cooling water subsystem 210 and the heat exchange device 300. Both the first valve 400 and the second valve 500 are bidirectional valves.
[0047] It should be noted that in the embodiments provided in this application, the first valve 400 and the second valve 500 are both used to control the heat exchange flow rate, and the heat exchange of the heat exchange device 300 is stopped when both the first valve 400 and the second valve 500 are closed.
[0048] For example, the heat exchange system 10 also includes a first flow meter 410 and a second flow meter 510. The first flow meter 410 is installed on the connecting pipe between the furnace roller cooling water subsystem 110 and the heat exchange device 300; the second flow meter 510 is installed on the connecting pipe between the crystallizer cooling water subsystem 210 and the heat exchange device 300.
[0049] It should be noted that the first flow meter 410 and the second flow meter 510 in the embodiments provided in this application are both used to monitor the heat exchange flow rate of cooling water in real time.
[0050] For example, the heat exchange system 10 also includes a temperature sensor 600, which is installed on the connecting pipe between the crystallizer cooling water subsystem 210 and the crystallizer 200 to be heated.
[0051] It should be noted that the temperature sensor 600 in the embodiments provided in this application is used to monitor the actual temperature of the cooling water in the crystallizer cooling water subsystem 210 in real time, and to determine whether the actual temperature of the cooling water has reached the target casting temperature corresponding to the target steel grade.
[0052] The working principle is as follows: Before the continuous casting and rolling equipment on the continuous casting and rolling production line starts casting strip steel, the heating equipment 100 is started in advance to raise the temperature of the cooling water in the furnace roll cooling water subsystem 110. Then, the first valve 400 and the second valve 500 are opened, and the heat exchange equipment 300 transfers the heat of the cooling water in the furnace roll cooling water subsystem 110 to the cooling water in the crystallizer cooling water subsystem 210. The actual temperature of the cooling water in the crystallizer cooling water subsystem 210 is monitored in real time to ensure that it reaches the target temperature range required for casting. When the actual temperature of the cooling water in the crystallizer cooling water subsystem 210 reaches the target temperature, the casting of strip steel is started. After the continuous casting and rolling equipment starts casting, the first valve 400 and the second valve 500 are closed to stop the heat exchange.
[0053] Compared with the prior art, the heat exchange system 10 provided in this application provides a method for heating the first cooling water in the furnace roll cooling water subsystem 110 based on the heating equipment 100 before the continuous casting and rolling equipment starts pouring strip steel on the continuous casting and rolling production line. The heated first cooling water is then transferred to the furnace roll heat exchange water assembly 120. Based on the heat exchange equipment 300, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem 210 through the second cooling water in the crystallizer heat exchange assembly to determine the actual temperature of the target cooling water in the crystallizer cooling water subsystem 210. When the actual temperature of the target cooling water reaches the target pouring temperature, the heating of the first cooling water is stopped, and the pouring of strip steel is started to prevent cracking of the continuous casting and rolling equipment. This application uses the residual heat of the furnace roll cooling water subsystem 110 to heat the crystallizer 200 to be heated, without consuming additional energy. It is simple to operate and easy to implement, effectively reducing the probability of cracking when the continuous casting equipment starts pouring, thereby reducing the accident rate.
[0054] Please see Figure 3 , Figure 3 A structural block diagram of a device for preventing cracking in continuous casting and rolling equipment, provided in an embodiment of this application, is shown. Figure 3 As shown, the device 3 for preventing cracking in continuous casting and rolling equipment includes: The first determining module 301 is used to heat the first cooling water in the furnace roll cooling water subsystem based on the heating equipment before the continuous casting and rolling equipment on the continuous casting and rolling production line starts casting strip steel, and to transfer the heated first cooling water to the furnace roll heat exchange water assembly.
[0055] The second determining module 302 is used to transfer the heat of the heated first cooling water to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange component based on the heat exchange equipment, and to determine the actual temperature of the target cooling water in the crystallizer cooling water subsystem.
[0056] The third determining module 303 is used to stop heating the first cooling water and start pouring the strip steel when the actual temperature of the target cooling water reaches the target pouring temperature, so as to prevent cracking of the continuous casting and rolling equipment.
[0057] For example, the second determining module 302 is specifically used for: Based on the preset start-up heating time and the heat exchange rate of the heat exchange equipment, the flow rate of the heat from the first cooling water after heating is determined to be transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange component.
[0058] Based on the flow rate and the capacity of the target cooling water in the crystal cooling water subsystem, the actual temperature of the target cooling water in the crystal cooling water subsystem is determined.
[0059] For example, the target pouring temperature can be determined in the following way: Based on the target steel grade corresponding to the strip and the preset steel grade-casting temperature mapping table, the target casting temperature corresponding to the strip is determined.
[0060] For example, the target pouring temperature can be determined in the following way: Determine whether the target steel grade corresponding to the strip exists in the preset steel grade-casting temperature mapping table.
[0061] If it exists, determine the target casting temperature corresponding to the target steel grade.
[0062] The device 3 for preventing cracking in continuous casting and rolling equipment provided in this application embodiment, compared with the prior art, heats the first cooling water in the furnace roll cooling water subsystem based on the heating equipment before the continuous casting and rolling equipment starts pouring strip steel on the continuous casting and rolling production line, and then transfers the heated first cooling water to the furnace roll heat exchange water assembly; based on the heat exchange equipment, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange assembly, and the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined; when the actual temperature of the target cooling water reaches the target pouring temperature, the heating of the first cooling water is stopped, and the pouring of strip steel is started, so as to prevent cracking of the continuous casting and rolling equipment. This application uses the residual heat of the furnace roll cooling water subsystem to heat the crystallizer to be heated, without consuming additional energy, and is simple to operate and easy to implement, effectively reducing the probability of cracking when the continuous casting equipment starts pouring, thereby reducing the accident rate. Please see Figure 4 , Figure 4 This application provides a schematic diagram of the structure of an electronic device according to an embodiment of the present application. Figure 4 As shown, electronic device 4 includes processor 401, memory 402 and bus 403.
[0063] Memory 402 stores machine-readable instructions executable by processor 4001. When electronic device 4 is running, processor 401 and memory 402 communicate via bus 403. When the machine-readable instructions are executed by processor 401, they can perform the operations described above. Figure 1 The specific implementation of the steps in the method embodiment for preventing cracking of continuous casting and rolling equipment can be found in the method embodiment, and will not be repeated here.
[0064] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the above-described actions. Figure 1 The specific implementation of the steps in the method embodiment for preventing cracking of continuous casting and rolling equipment can be found in the method embodiment, and will not be repeated here.
[0065] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0066] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0067] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code.
[0068] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0069] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0070] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0071] This application also provides a computer program product including computer software instructions that, when executed on a processing device, cause the processing device to execute a process for preventing cracking in a continuous casting and rolling equipment.
[0072] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).
[0073] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0074] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between devices or units, and may be electrical, mechanical, or other forms.
[0075] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0076] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0077] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0078] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
[0079] Although preferred embodiments have been described in this specification, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this specification.
[0080] Obviously, those skilled in the art can make various modifications and variations to this specification without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, this specification is also intended to include such modifications and variations.
Claims
1. A method for preventing cracking in continuous casting and rolling equipment, applied to the heat exchange system of a continuous casting and rolling production line, characterized in that, The heat exchange system includes a heat exchange device, a heating device, a furnace roller heat exchange water assembly, a crystallizer heat exchange water assembly, a crystallizer cooling water subsystem, a furnace roller cooling water subsystem, and a crystallizer to be heated. The heating device is fixedly installed in the furnace roller cooling water subsystem. The furnace roller cooling water subsystem is connected to the furnace roller heat exchange water assembly through the heating device. The furnace roller heat exchange water assembly is connected to the crystallizer heat exchange water assembly through the heat exchange device. The crystallizer heat exchange water assembly is connected to the crystallizer cooling water subsystem through the crystallizer to be heated. The method for preventing cracking in continuous casting and rolling equipment includes: Before the continuous casting and rolling equipment on the continuous casting and rolling production line starts casting strip steel, the first cooling water in the furnace roll cooling water subsystem is heated based on the heating equipment, and the heated first cooling water is transferred to the furnace roll heat exchange water assembly. Based on the heat exchange device, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange assembly, and the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined. When the actual temperature of the target cooling water reaches the target casting temperature, heating of the first cooling water is stopped, and casting of the strip is started to prevent cracking of the continuous casting and rolling equipment.
2. The method for preventing cracking in continuous casting and rolling equipment according to claim 1, characterized in that, Based on the heat exchange device, the heat of the heated first cooling water is transferred to the crystallizer cooling water subsystem via the second cooling water in the crystallizer heat exchange assembly, and the actual temperature of the target cooling water in the crystallizer cooling water subsystem is determined, including: Based on the preset start-up heating time and the heat exchange rate of the heat exchange equipment, the flow rate at which the heat of the first cooling water after heating is transferred to the crystallizer cooling water subsystem through the second cooling water in the crystallizer heat exchange assembly is determined. Based on the flow rate and the capacity of the target cooling water in the crystal cooling water subsystem, the actual temperature of the target cooling water in the crystal cooling water subsystem is determined.
3. The method for preventing cracking in continuous casting and rolling equipment according to claim 1, characterized in that, The target pouring temperature is determined using the following methods: Based on the target steel grade corresponding to the strip and the preset steel grade-casting temperature mapping table, the target casting temperature corresponding to the strip is determined.
4. The method for preventing cracking in continuous casting and rolling equipment according to claim 3, characterized in that, The target pouring temperature is determined using the following methods: Determine whether the target steel grade corresponding to the strip is stored in the preset steel grade-casting temperature mapping table; If it exists, determine the target casting temperature corresponding to the target steel grade.
5. A heat exchange system using the method for preventing cracking in continuous casting and rolling equipment as described in any one of claims 1-4, characterized in that, The heat exchange system includes a heat exchange device, a heating device, a furnace roller heat exchange water assembly, a crystallizer heat exchange water assembly, a crystallizer cooling water subsystem, a furnace roller cooling water subsystem, and a crystallizer to be heated. The heating device is fixedly installed in the furnace roller cooling water subsystem. The furnace roller cooling water subsystem is connected to the furnace roller heat exchange water assembly through the heating device. The furnace roller heat exchange water assembly is connected to the crystallizer heat exchange water assembly through the heat exchange device. The crystallizer heat exchange water assembly is connected to the crystallizer cooling water subsystem through the crystallizer to be heated.
6. The heat exchange system according to claim 5, characterized in that, The heat exchange system also includes a first valve and a second valve, wherein the first valve is installed on the connecting pipe between the furnace roller cooling water subsystem and the heat exchange equipment; The second valve is installed on the connecting pipe between the crystallizer cooling water subsystem and the heat exchange equipment. Both the first valve and the second valve are bidirectional valves.
7. The heat exchange system according to claim 5, characterized in that, The heat exchange system also includes a first flow meter and a second flow meter, wherein the first flow meter is installed on the connecting pipe between the furnace roller cooling water subsystem and the heat exchange equipment; The second flow meter is installed on the connecting pipe between the crystallizer cooling water subsystem and the heat exchange equipment.
8. The heat exchange system according to claim 5, characterized in that, The heat exchange system also includes a temperature sensor, which is installed on the connecting pipe between the crystallizer cooling water subsystem and the crystallizer to be heated.
9. An electronic device, characterized in that, include: The device includes a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. The machine-readable instructions are executed by the processor to perform the steps of the method for preventing cracking in a continuous casting and rolling equipment as described in any of claims 1-4.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the method for preventing cracking in a continuous casting and rolling equipment as described in any one of claims 1-4.