Control method and related equipment for roller segmented cooling

Abstract

This invention discloses a control method and related equipment for segmented roll cooling, relating to the field of roll cooling. The method primarily addresses the current issues of inaccurate and ineffective roll thermal crown control. The method comprises: obtaining the number of rolling blocks and variable compensation coils after work roll replacement on a target production line; determining a cooling water compensation value based on the number of rolling blocks and variable compensation coils after work roll replacement; and adjusting the RTC device based on the cooling water compensation value. The present invention is used for the control process of segmented roll cooling.

Description

Technical Field

[0001] The present invention relates to the field of roller cooling, and in particular to a control method for roller segmented cooling and related equipment. Background Art

[0002] The biggest difference between endless slab rolling and traditional hot rolling is that the workpiece is rigidly connected from the caster to the coiler. During production, the strip and rolls remain in constant contact. Consequently, the rolls experience greater thermal expansion than in hot rolling, and this expansion continues to increase as rolling progresses. Furthermore, irregular wave shapes that occasionally occur during production are often difficult to control.

[0003] The RTC (Roll Thermal Control) and RTC Plus equipment for thin slab endless rolling lines achieve differentiated cooling control for different roll zones by controlling the amount of water in each zone, ultimately achieving effective control of thermal crown. RTC can also adjust the amount of water in specific areas to control irregular roll shapes.

[0004] However, during on-site production, the water volume in each section can only be set and controlled through the model control parameter table. The set value distinguishes between steel types, widths, and thicknesses, and the parameters need to be configured before production. During normal production, the automatic control mode is executed, and the water volume setting of each section executes the set value of the model parameter table. The thermal convexity of the roll is controlled by setting the preset value. If a 1 / 4 wave shape appears between the frames during production, the operator will switch the RTC control mode of the corresponding frame to manual mode, and then adjust the water volume of the 1 / 4 position nozzle to achieve control of the 1 / 4 wave at the outlet of the frame. However, the current control method for the control of the thermal convexity of the roll is open-loop control, which is not precise enough and the thermal convexity control effect is poor. Summary of the Invention

[0005] In view of the above problems, the present invention provides a control method and related equipment for segmented cooling of a rolling mill roll, the main purpose of which is to solve the problem that the current control of the thermal crown of the rolling mill roll is not precise enough and the thermal crown control effect is poor.

[0006] To solve at least one of the above technical problems, in a first aspect, the present invention provides a method for controlling segmented cooling of a roll, the method comprising:

[0007] Obtain the number of rolling blocks and compensation coils after work roll change of the target production line;

[0008] Determine the cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils;

[0009] The RTC device is adjusted based on the above cooling water compensation value.

[0010] Optionally, the adjusting of the RTC device based on the cooling water compensation value includes:

[0011] The rack number and nozzle position of the RTC device are adjusted based on the above cooling water compensation value.

[0012] Optional,

[0013] The above-mentioned variable compensation volume number includes the variable compensation starting volume number and the variable compensation target volume number.

[0014] The above-mentioned variable compensation start roll number is used to represent the roll period position when the compensation water volume starts to change;

[0015] The above-mentioned variable compensation target volume number is used to represent the roll period position when the compensation water volume changes.

[0016] Optionally, the cooling water compensation value is determined based on the number of rolling blocks after the work rolls are changed and the number of compensation coils, including:

[0017] When the number of rolling blocks after the work roll change is less than or equal to the number of coils at the start of the compensation, the cooling water flow compensation value is determined based on the initial value of the RTC device and the initial flow compensation amount.

[0018] Optionally, the cooling water compensation value is determined based on the number of rolling blocks after the work rolls are changed and the number of compensation coils, including:

[0019] When the number of rolling blocks after the above-mentioned working roll change is less than or equal to the above-mentioned variable compensation target number of coils, the above-mentioned cooling water compensation value is determined based on the above-mentioned variable compensation starting number of coils, the above-mentioned variable compensation target number of coils, the number of rolling blocks after the above-mentioned working roll change, the initial value of the RTC equipment and the initial flow compensation amount.

[0020] Optionally, the cooling water compensation value is determined based on the number of rolling blocks after the work rolls are changed and the number of compensation coils, including:

[0021] When the number of rolling blocks after the working rolls are changed is greater than the target number of coils for variable compensation, the initial value of the RTC device is determined to be the cooling water compensation value.

[0022] Optionally, the above method further includes:

[0023] Obtain the actual thermal crown of the target work roll;

[0024] Determining a deviation value based on a difference between the actual thermal crown of the target work roll and the target thermal crown;

[0025] The cooling water volume compensation value is determined based on the deviation value and the water volume influence coefficient, wherein the water volume influence coefficient is determined based on the actual thermal convexity and the target thermal convexity.

[0026] In a second aspect, an embodiment of the present invention further provides a control device for roller segmented cooling, comprising:

[0027] An acquisition unit is used to acquire the number of rolling blocks and the number of compensation coils after the work rolls of the target production line are changed;

[0028] A determining unit, configured to determine a cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of variable compensation coils;

[0029] The regulating unit is used to regulate the RTC device based on the cooling water compensation value.

[0030] In order to achieve the above-mentioned purpose, according to the third aspect of the present invention, a computer-readable storage medium is provided, wherein the above-mentioned computer-readable storage medium includes a stored program, wherein when the above-mentioned program is executed by a processor, the steps of the control method of the above-mentioned roller segmented cooling are implemented.

[0031] In order to achieve the above-mentioned purpose, according to the fourth aspect of the present invention, there is provided an electronic device, comprising at least one processor and at least one memory connected to the above-mentioned processor; wherein the above-mentioned processor is used to call the program instructions in the above-mentioned memory to execute the steps of the above-mentioned control method for segmented cooling of the rolling mill roll.

[0032] Through the above-mentioned technical solution, the present invention provides a control method and related equipment for segmented roll cooling. This method addresses the current issues of imprecise and ineffective roll thermal crown control. By obtaining the number of rolling blocks and variable compensation coils after work roll replacement on the target production line, determining a cooling water compensation value based on these values, and adjusting the RTC equipment based on this cooling water compensation value, the present invention addresses the current issues of imprecise and ineffective roll thermal crown control. This method achieves control of roll thermal crown by setting and dynamically adjusting the water ratio at different locations, thereby better controlling strip shape and improving rolling stability and product quality.

[0033] Correspondingly, the control device, equipment and computer-readable storage medium for segmented cooling of the rolling mill provided in the embodiments of the present invention also have the above-mentioned technical effects.

[0034] 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

[0035] 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:

[0036] Figure 1 A schematic flow chart of a method for controlling segmented cooling of a roll provided by an embodiment of the present invention is shown;

[0037] Figure 2 An RTC water compensation setting diagram provided by an embodiment of the present invention is shown;

[0038] Figure 3 A schematic diagram of thermal expansion of upper and lower rollers provided by an embodiment of the present invention is shown;

[0039] Figure 4 A schematic block diagram showing the composition of a control device for segmented cooling of a roll provided by an embodiment of the present invention is shown;

[0040] Figure 5 A schematic block diagram of the composition of a control electronic device for roller segmented cooling provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0042] In order to solve the problem that the current control of the thermal crown of the roller is not accurate enough and the thermal crown control effect is poor, the embodiment of the present invention provides a control method for the segmented cooling of the roller, such as Figure 1 As shown, the method includes:

[0043] S101, obtaining the number of rolling blocks and the number of compensation coils after the work rolls of the target production line are changed;

[0044] For example, the number of rolling blocks and the number of variable compensation coils after the working rolls of the target production line are changed are detected in real time by monitoring equipment.

[0045] S102, determining a cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils;

[0046] Illustratively, an embodiment of the present invention provides a setting method for compensating cooling water volume according to the number of produced blocks. Whether the setting method is put into use can be configured in the secondary control system model program.

[0047] S103: Adjust the RTC device based on the cooling water compensation value.

[0048] Illustratively, an embodiment of the present invention is a method for regulating the thermal crown of a roll by controlling the water volume of each section of an RTC device, specifically including: water volume correction compensation and target thermal crown control.

[0049] Through the above-mentioned technical solution, the present invention provides a control method for segmented roll cooling, which addresses the current problems of imprecise and poor thermal crown control. This method obtains the number of rolling blocks and variable compensation coils after the work rolls are replaced on the target production line; determines a cooling water compensation value based on this number of rolling blocks and variable compensation coils; and adjusts the RTC equipment based on this cooling water compensation value. In this solution, thermal crown control is achieved by setting and dynamically adjusting the water ratio at different locations, thereby better controlling the strip shape, improving rolling stability, and enhancing product quality.

[0050] In one embodiment, the adjusting of the RTC device based on the cooling water compensation value includes:

[0051] The rack number and nozzle position of the RTC device are adjusted based on the above cooling water compensation value.

[0052] For example, Figure 2 As shown, the rack number and nozzle position of the RTC device are adjusted based on the above cooling water compensation value to achieve different working times of the working roll, to establish thermal expansion as quickly as possible in the early stage of adjustment, and to maintain a stable state of thermal expansion in the later stage.

[0053] In one embodiment,

[0054] The above-mentioned variable compensation volume number includes the variable compensation starting volume number and the variable compensation target volume number.

[0055] The above-mentioned variable compensation start roll number is used to represent the roll period position when the compensation water volume starts to change;

[0056] The above-mentioned variable compensation target volume number is used to represent the roll period position when the compensation water volume changes.

[0057] Exemplarily, the above-mentioned variable compensation starting volume number is configured to distinguish between racks, and the variable compensation target volume number is configured to distinguish between racks.

[0058] In one embodiment, the cooling water compensation value is determined based on the number of rolling blocks after the work rolls are changed and the number of compensation coils, including:

[0059] When the number of rolling blocks after the work roll change is less than or equal to the number of coils at the start of the compensation, the cooling water flow compensation value is determined based on the initial value of the RTC device and the initial flow compensation amount.

[0060] For example, if the function is put into use, when n roll When (i)≤nc_sfw,

[0061] RTC(i,j)=RTC SET (i,j)+SFW(i,j)

[0062] In one embodiment, the cooling water compensation value is determined based on the number of rolling blocks after the work rolls are changed and the number of compensation coils, including:

[0063] When the number of rolling blocks after the above-mentioned working roll change is less than or equal to the above-mentioned variable compensation target number of coils, the above-mentioned cooling water compensation value is determined based on the above-mentioned variable compensation starting number of coils, the above-mentioned variable compensation target number of coils, the number of rolling blocks after the above-mentioned working roll change, the initial value of the RTC equipment and the initial flow compensation amount.

[0064] For example, when n roll When (i)≤nt_sfw,

[0065]

[0066] In one embodiment, the cooling water compensation value is determined based on the number of rolling blocks after the work rolls are changed and the number of compensation coils, including:

[0067] When the number of rolling blocks after the working rolls are changed is greater than the target number of coils for variable compensation, the initial value of the RTC device is determined to be the cooling water compensation value.

[0068] For example, when nroll(i)>nt_sfw,

[0069] RTC(i,j)=RTC SET (i,j)

[0070] Where, SFW(i,j) is the initial flow compensation amount, 0≤SFW(i,j)≤30%;

[0071] i——rack number, j——nozzle position, when 1≤i≤5, 1≤j≤3, when 6≤i≤8, 1≤j≤5;

[0072] nc_sfw——change the compensation start volume number and distinguish the racks for configuration;

[0073] nt_sfw——change the number of target volumes for compensation and configure them based on the rack;

[0074] n roll (i)——Number of rolling blocks after work roll change;

[0075] RTC SET (i,j)——RTC device initial value (i.e. table setting);

[0076] It is understandable that if the function is not put into use,

[0077] RTC(i,j)=RTC SET (i,j)

[0078] In one embodiment, the method further includes:

[0079] Obtain the actual thermal crown of the target work roll;

[0080] Determining a deviation value based on a difference between the actual thermal crown of the target work roll and the target thermal crown;

[0081] The cooling water volume compensation value is determined based on the deviation value and the water volume influence coefficient, wherein the water volume influence coefficient is determined based on the actual thermal convexity and the target thermal convexity.

[0082] For example, an embodiment of the present invention also provides another method for controlling the target thermal crown of a work roll. This method is mainly achieved by controlling the water ratio in different areas of the RTC equipment. The target thermal crown of the work rolls of each stand needs to be configured in advance. The specific method is as follows:

[0083] Rc iact =(Rh iCT +Rh iCB ) / 2-(Rh iDT +Rh iDB +Rh iOT +Rh iOB ) / 4

[0084] ΔRc i =Rc iact -Rc itgt

[0085] RTC(i,j)=RTC(i,j)+(dFlw / dR c ) ij ΔRc i

[0086] Among them, the above formula, such as Figure 3 The thermal expansion diagram of the upper and lower rollers is shown as follows:

[0087] Rc iact ——actual thermal convexity of the i-th (target) rack;

[0088] ΔRc i ——The deviation between the actual thermal crown and the target thermal crown of the i-th rack;

[0089] Rh iCT —Thermal expansion of the middle part of the work roll on the i-th stand, data from ROP model calculation (mm);

[0090] Rh iDT ——Thermal expansion of the working roll drive side on the i-th stand, data from ROP model calculation (mm);

[0091] Rh iOT ——Thermal expansion of the operating side of the work roll on the i-th stand, data from ROP model calculation (mm);

[0092] Rh iCB ——Thermal expansion of the middle part of the work roll under the i-th stand, data from ROP model calculation (mm);

[0093] Rh iDB ——Thermal expansion of the drive side of the work roll under the i-th stand, the data comes from the ROP model calculation (mm);

[0094] Rh iOB ——Thermal expansion of the working roll operating side under the i-th stand, the data comes from the ROP model calculation (mm);

[0095] Rh itgt ——Target thermal crown of the work roll of the ith stand (configurable, mm);

[0096] dw e ——Edge position definition (mm), 0≤dw e ≤100;

[0097] dFlw / dR c ——Water volume influence coefficient of the deviation between actual thermal convexity and target convexity, (% / mm).

[0098] For example, in the embodiment of the present invention, in order to more quickly achieve thermal expansion of the rolls and bring the rolls to thermal equilibrium at the initial stage of rolling, the RTC water compensation amount SFW(i)(j) can be set to 20%. The variable compensation starting roll number nc_sfw is set to 5, and the compensation amount changes linearly starting from the fifth roll. The variable compensation target roll number nt_sfw is set to 10. At the tenth roll, the water compensation amount is 0. Subsequent water volume settings are based solely on the data in the model parameter table.

[0099] For example, the embodiment of the present invention can define the edge of the rolling mill roll, with dwe set to 100 mm and the target thermal convexity Rhitgt set to 0.1 mm. The settings need to be made separately for the rack, steel type, and specification based on the on-site cooling water volume and cooling effect. The initial value is set to 50, and the set value is modified according to the actual production situation.

[0100] Furthermore, as a response to the above Figure 1 In order to realize the method shown in the figure, the embodiment of the present invention also provides a control device for roller segment cooling, which is used to Figure 1 This device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will not describe the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can implement all the contents of the aforementioned method embodiment. Figure 4 As shown, the device includes: an acquisition unit 21, a determination unit 22, and an adjustment unit 23, wherein

[0101] An acquisition unit 21 is used to acquire the number of rolling blocks and the number of compensation coils after the work rolls of the target production line are changed;

[0102] A determining unit 22 is configured to determine a cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils;

[0103] The regulating unit 23 is used to regulate the RTC device based on the cooling water compensation value.

[0104] Through the above-mentioned technical solution, the present invention provides a control method and related equipment for segmented roll cooling. This method addresses the current issues of imprecise and ineffective roll thermal crown control. By obtaining the number of rolling blocks and variable compensation coils after work roll replacement on the target production line, determining a cooling water compensation value based on these values, and adjusting the RTC equipment based on this cooling water compensation value, the present invention addresses the current issues of imprecise and ineffective roll thermal crown control. This method achieves control of roll thermal crown by setting and dynamically adjusting the water ratio at different locations, thereby better controlling strip shape and improving rolling stability and product quality.

[0105] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be provided. By adjusting kernel parameters, a method for controlling segmented roll cooling is implemented, addressing the current issues of inaccurate and ineffective roll thermal crown control.

[0106] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program. When the program is executed by a processor, the control method for segmented cooling of a rolling mill roll is implemented.

[0107] An embodiment of the present invention provides a processor, which is used to run a program, wherein the control method for segmented cooling of a rolling mill roll is executed when the program is run.

[0108] An embodiment of the present invention provides an electronic device, comprising at least one processor and at least one memory connected to the processor; wherein the processor is configured to call program instructions in the memory to execute the control method for roller segmented cooling as described above.

[0109] An embodiment of the present invention provides an electronic device 30, such as Figure 5 As shown, the electronic device includes at least one processor 301, and at least one memory 302 and a bus 303 connected to the processor; wherein the processor 301 and the memory 302 communicate with each other through the bus 303; the processor 301 is used to call the program instructions in the memory to execute the above-mentioned control method for segmented cooling of the rolling mill roll.

[0110] The intelligent electronic devices in this article can be PCs, PADs, mobile phones, etc.

[0111] The present application also provides a computer program product, which, when executed on a process management electronic device, is suitable for executing the steps of initializing the control method for the above-mentioned segmented cooling of a rolling mill.

[0112] It should be noted that, in the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0113] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0114] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0115] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0116] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0117] The present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device is caused to execute the following Figure 1 This corresponds to the flow of memory control in the embodiment.

[0118] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)).

[0119] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0120] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0121] Units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0122] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0123] If the integrated unit is implemented in the form of 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 the present application is essentially 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, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0124] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method for roller segmented cooling, characterized in that: include: Obtain the number of rolling blocks and compensation coils after work roll change of the target production line; Determining a cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils; adjusting the RTC device based on the cooling water compensation value; The variable compensation volume number includes the variable compensation starting volume number and the variable compensation target volume number. The variable compensation start roll number is used to represent the roll period position when the compensation water volume starts to change; The variable compensation target volume number is used to represent the roll period position at the end of the compensation water volume change; The determining of the cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils includes: When the number of rolling blocks after the working rolls are changed is greater than the variable compensation target number of coils, the initial value of the RTC device is determined to be the cooling water compensation value.

2. The method according to claim 1, characterized in that The adjusting of the RTC device based on the cooling water compensation value includes: The rack number and nozzle position of the RTC device are adjusted based on the cooling water amount compensation value.

3. The method according to claim 1, characterized in that The determining of the cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils includes: When the number of rolling blocks after the work rolls are changed is less than or equal to the variable compensation starting coil number, the cooling water flow compensation value is determined based on the RTC equipment initial value and the initial flow compensation amount.

4. The method according to claim 1, wherein The determining of the cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils includes: When the number of rolling blocks after the working rolls are changed is less than or equal to the target number of variable compensation coils, the cooling water compensation value is determined based on the variable compensation starting number of coils, the target number of variable compensation coils, the number of rolling blocks after the working rolls are changed, the initial value of the RTC equipment and the initial flow compensation amount.

5. A control device for roller segmented cooling, characterized in that: include: An acquisition unit is used to acquire the number of rolling blocks and the number of compensation coils after the work rolls of the target production line are changed; a determining unit, configured to determine a cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of variable compensation coils; an adjusting unit, configured to adjust the RTC device based on the cooling water quantity compensation value; The variable compensation volume number includes the variable compensation starting volume number and the variable compensation target volume number. The variable compensation start roll number is used to represent the roll period position when the compensation water volume starts to change; The variable compensation target volume number is used to represent the roll period position at the end of the compensation water volume change; The determining of the cooling water compensation value based on the number of rolling blocks after the work rolls are changed and the number of compensation coils includes: When the number of rolling blocks after the working rolls are changed is greater than the variable compensation target number of coils, the initial value of the RTC device is determined to be the cooling water compensation value.

6. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the control method for segmented cooling of a roll according to any one of claims 1 to 4 is implemented.

7. An electronic device, characterized in that: The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the control method for segmented cooling of the roll according to any one of claims 1 to 4.

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