Cooling water system, control method and device thereof and readable storage medium

Abstract

The invention discloses a cooling water system, a control method and device thereof and a readable storage medium, and relates to the technical field of equipment control. The control method of the cooling water system comprises the steps that the pressure of a roller is checked through a pressure sensor to obtain pressure data; according to the pressure data, the starting time and the cooling water flow are determined; when the opening moment is reached, the pneumatic switch valve is opened; and after the pneumatic switch valve is opened, the cooling water nozzle carries out cooling work according to the flow of the cooling water by controlling the adjusting valve. The control precision of the cooling water system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of device control, and in particular to a cooling water system, a control method and device thereof, and a readable storage medium. BACKGROUND

[0002] The roll cooling water system is mainly used for cooling the work roll of the rolling mill, reducing the work roll temperature, protecting the roll surface, controlling the thermal expansion of the roll, maintaining the roll shape, and prolonging the service life of the roll. However, the control method of the existing cooling water system has the technical problem of low control precision. SUMMARY

[0003] The present application provides a cooling water system, a control method and device thereof, and a readable storage medium, which are used to solve the technical problem of low control precision in the prior art.

[0004] In a first aspect, the present application provides a control method of a cooling water system, the cooling water system being used for a roll of a rolling mill, and the cooling water system comprising a pressure sensor, a cooling water nozzle, a pneumatic on-off valve, and a regulating valve. The method comprises the following steps.

[0005] The pressure sensor is used to check the pressure of the roll to obtain pressure data.

[0006] The pressure data are used to determine an opening time and a cooling water flow rate, respectively.

[0007] When the opening time is reached, the pneumatic on-off valve is opened.

[0008] After the pneumatic on-off valve is opened, the regulating valve is controlled to make the cooling water nozzle perform a cooling work according to the cooling water flow rate.

[0009] The control method of the cooling water system can accurately determine the cooling water flow rate according to the pressure data, ensures the data accuracy of the cooling water flow rate, and further improves the control precision of the cooling water system.

[0010] In a second aspect, the present application provides a control device of a cooling water system, the cooling water system being used for a roll of a rolling mill, and the cooling water system comprising a pressure sensor, a cooling water nozzle, a pneumatic on-off valve, and a regulating valve. The device comprises the following units.

[0011] An acquisition unit is configured to check the pressure of the roll by using the pressure sensor to obtain pressure data.

[0012] A processing unit is configured to determine an opening time and a cooling water flow rate according to the pressure data, respectively.

[0013] A control unit is configured to open the pneumatic on-off valve when the opening time is reached.

[0014] The control unit is further configured to control the regulating valve to make the cooling water nozzle perform the cooling operation according to the cooling water flow after the pneumatic on-off valve is opened.

[0015] The control device of the cooling water system in the embodiment can accurately determine the cooling water flow according to the pressure data, ensures the data accuracy of the cooling water flow, and further improves the control precision of the cooling water system

[0016] In a third aspect, the application provides another control device of a cooling water system, which comprises a processor and a memory, and the memory stores a computer program which, when executed by the processor, implements the steps of the control method of the cooling water system according to any one of the above embodiments. Therefore, the control device of the cooling water system has all the beneficial effects of the control method of the cooling water system according to any one of the above embodiments, which will not be repeated here.

[0017] In a fourth aspect, the application provides a readable storage medium, which stores a program or instructions, and the program or instructions, when executed by a processor, implement the steps of the control method of the cooling water system according to any one of the above embodiments. Therefore, the readable storage medium has all the beneficial effects of the control method of the cooling water system according to any one of the above embodiments, which will not be repeated here.

[0018] According to a fifth aspect, the application provides a cooling water system, which comprises the control device of the cooling water system according to the second aspect, or the control device of the cooling water system according to the third aspect, and / or the readable storage medium according to the fourth aspect, and thus has all the beneficial technical effects of the control device of the cooling water system according to the second aspect, or the control device of the cooling water system according to the third aspect, and / or the readable storage medium according to the fourth aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without any creative labor.

[0020] Figure 1 The flow chart of the control method of the cooling water system provided by the embodiments of the application is shown in the figure.

[0021] Figure 2 The functional module block diagram of the control device of the cooling water system provided by the embodiments of the application is shown in the figure.

[0022] Figure 3A structural block diagram of a control device of a cooling water system provided in an embodiment of the present application is shown in the figure;

[0023] Figure 4 A structural block diagram of a cooling water system provided in an embodiment of the present application is shown in the figure;

[0024] wherein, Figure 4 The correspondence between the reference signs and the component names in the figure is as follows:

[0025] 900 cooling water system, 901 pressure sensor, 902 cooling water nozzle, 903 controller, 904 electromagnetic flowmeter, 905 cooling water setting model, 906 regulating valve, 907 pneumatic on-off valve, 908 high-pressure water supply pump, 909 cooling water pipeline. DETAILED DESCRIPTION

[0026] In order to better understand the technical solutions provided in the embodiments of the present application, the technical solutions of the embodiments of the present application are described in detail below through the figures and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0027] In this document, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, and do not necessarily require or imply that these entities or actions exist in any such actual relationship or order. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a list of elements does not only include those elements, but also includes other elements not explicitly listed or other elements inherent to such process, method, article or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element. The term "more than two" includes two or more than two.

[0028] In some embodiments, as shown in Figure 1 A control method of a cooling water system provided in an embodiment of the present application includes:

[0029] Step S101, checking the pressure of the roller by the pressure sensor to obtain pressure data;

[0030] Step S102, determining the opening time and the cooling water flow rate respectively according to the pressure data;

[0031] Step S103, opening the pneumatic on-off valve when the opening time is reached;

[0032] Step S104, after the pneumatic on-off valve is opened, the cooling water nozzle is controlled to work according to the cooling water flow by controlling the regulating valve.

[0033] In this embodiment, a control method of a cooling water system for cooling a roll of a rolling mill is provided, which comprises a pressure sensor, a cooling water nozzle, a pneumatic on-off valve, a regulating valve and the like.

[0034] Exemplarily, the cooling water system further comprises a PLC (Programmable Logic Controller) controller, and the control method of the cooling water system is executed by the PLC controller.

[0035] The pressure sensor is in contact with the roll of the rolling mill and can check the pressure of the roll to obtain pressure data of the roll, wherein the pressure data is a pressure value of the roll.

[0036] Exemplarily, after the pressure sensor obtains the pressure data, the pressure data is transmitted to the PLC controller for processing.

[0037] According to the pressure data, an opening time and a cooling water flow are determined respectively, wherein the opening time is a time when the cooling water system starts to work, and the cooling water flow is an output flow of the cooling water of the cooling water system.

[0038] When the opening time is reached, the pneumatic on-off valve is opened, wherein the pneumatic on-off valve is arranged in series with the regulating valve on the cooling water pipeline.

[0039] After the pneumatic on-off valve is opened, the cooling water nozzle is controlled to work according to the cooling water flow by controlling the regulating valve.

[0040] Exemplarily, by controlling the opening degree of the regulating valve, the flow of the cooling water nozzle can be adjusted.

[0041] Exemplarily, by controlling the opening degree of the regulating valve, the cooling water nozzle sprays the cooling water onto the roll according to the cooling water flow, so as to cool the roll.

[0042] It should be noted that according to the pressure data, the cooling water flow can be accurately determined, so as to ensure the data accuracy of the cooling water flow, and further ensure the control accuracy of the cooling water system.

[0043] The control method of the cooling water system in this embodiment can accurately determine the cooling water flow according to the pressure data, so as to ensure the data accuracy of the cooling water flow, and further improve the control accuracy of the cooling water system.

[0044] In some embodiments, the application provides a control method of a cooling water system, the method comprising:

[0045] In step S201, position information of the steel material to be rolled is determined according to the pressure data, wherein the steel material to be rolled is rolled by the roll.

[0046] In step S202, the opening time is determined according to the position information.

[0047] In this embodiment, the position information of the steel material to be rolled is determined according to the pressure data, wherein the steel material to be rolled is rolled by the roll, and the position information represents the position of the steel material to be rolled.

[0048] The opening time is determined according to the position information.

[0049] For example, the opening time can be determined according to the position information of the steel material to be rolled and the rolling speed.

[0050] In some embodiments, the application provides a control method of a cooling water system, the method comprising:

[0051] In step S301, the generation mode of the rolling mill is determined according to the pressure data.

[0052] In step S302, the cooling water flow is determined according to the generation mode.

[0053] In this embodiment, the generation mode of the rolling mill is determined according to the pressure data, wherein the generation mode is the rolling mode of the rolling mill for the steel material to be rolled.

[0054] For example, the generation mode can be a single block rolling mode, a semi-endless rolling mode or a full-endless rolling mode.

[0055] The cooling water flow is determined according to the generation mode.

[0056] For example, the PLC controller can determine the cooling water flow corresponding to the generation mode.

[0057] In some embodiments, the application provides a control method of a cooling water system, the method comprising:

[0058] In step S401, a preset cooling water setting model and a water distribution of a cooling water nozzle are obtained.

[0059] In step S402, the water distribution and the generation mode are processed by the cooling water setting model to obtain the cooling water flow.

[0060] In the embodiment, a preset cooling water setting model and a water quantity layout of the cooling water nozzle are acquired, wherein the cooling water setting model is a mathematical model for determining the cooling water flow, and the water quantity layout is a preset water quantity layout of the cooling water nozzle.

[0061] Exemplarily, the cooling water setting model has a self-learning function.

[0062] The water quantity layout and the generation mode are data processed by the cooling water setting model to obtain the cooling water flow.

[0063] Exemplarily, the cooling water setting model sets the cooling water flow required by different rolling modes and rolling piece specifications according to the preset water quantity layout of the rolling mill cooling water nozzle and the header.

[0064] In some embodiments, the embodiment of the present application provides a control method of a cooling water system, the method comprises the following steps:

[0065] In step S501, the flow of the cooling water pipeline is checked by the electromagnetic flowmeter to obtain a real-time flow.

[0066] In step S502, the adjusting valve is adjusted according to the real-time flow.

[0067] In the embodiment, the cooling water system further comprises an electromagnetic flowmeter and a cooling water pipeline, the flow of the cooling water pipeline is checked by the electromagnetic flowmeter to obtain a real-time flow, and the adjusting valve is adjusted according to the real-time flow, wherein the real-time flow is the real-time flow of the cooling water in the cooling water pipeline.

[0068] Exemplarily, the actual flow data is detected by the electromagnetic flowmeter, is fed back to the rolling mill cooling water setting model in real time, is calculated for deviation, is referenced to the current rolling condition, and is used for closed-loop feedback control of the adjusting valve, the rolling mill cooling water is provided by the high-pressure water supply pump, is transported to the rolling mill cooling water nozzle and the header installed at the outlet of the rolling mill through the pipeline composed of the steel pipes, and is sprayed by the nozzle to realize adjustment and accurate control of the rolling mill cooling water.

[0069] In some embodiments, the embodiment of the present application provides a control method of a cooling water system, and the method further comprises the following steps:

[0070] In step S601, the cooling water is provided to the cooling water pipeline and the cooling water nozzle by the high-pressure water supply pump.

[0071] In the embodiment, the cooling water system further comprises a high-pressure water supply pump, and the cooling water is provided to the cooling water pipeline and the cooling water nozzle by the high-pressure water supply pump.

[0072] In some embodiments, as Figure 2As shown, the control device 700 of the cooling water system in the embodiment of the present application comprises:

[0073] The acquisition unit 702 is configured to check the pressure of the roll by the pressure sensor to obtain pressure data.

[0074] The processing unit 704 is configured to determine the opening time and the cooling water flow rate respectively according to the pressure data.

[0075] The control unit 706 is configured to open the pneumatic on-off valve when the opening time is reached.

[0076] The control unit 706 is further configured to control the regulating valve to make the cooling water nozzle work according to the cooling water flow rate after the pneumatic on-off valve is opened.

[0077] In this embodiment, the control device 700 of the cooling water system for cooling the roll of the rolling mill comprises a pressure sensor, a cooling water nozzle, a pneumatic on-off valve, a regulating valve and the like.

[0078] Exemplarily, the cooling water system further comprises a PLC controller, and the control method of the cooling water system is executed by the PLC controller.

[0079] The pressure sensor is in contact with the roll of the rolling mill and can check the pressure of the roll to obtain pressure data of the roll, wherein the pressure data is the pressure value of the roll.

[0080] Exemplarily, after the pressure sensor obtains the pressure data, the pressure data is transmitted to the PLC controller for processing.

[0081] The opening time and the cooling water flow rate are determined respectively according to the pressure data, wherein the opening time is the time when the cooling water system starts to work, and the cooling water flow rate is the cooling water output flow rate of the cooling water system.

[0082] The pneumatic on-off valve is opened when the opening time is reached, wherein the pneumatic on-off valve is arranged in series with the regulating valve on the cooling water pipeline.

[0083] After the pneumatic on-off valve is opened, the regulating valve is controlled to make the cooling water nozzle work according to the cooling water flow rate.

[0084] Exemplarily, the flow rate of the cooling water nozzle can be adjusted by controlling the opening and closing degree of the regulating valve.

[0085] Exemplarily, the cooling water nozzle sprays cooling water to the roll according to the cooling water flow rate by controlling the opening and closing degree of the regulating valve, so as to perform cooling work on the roll.

[0086] It should be noted that the cooling water flow rate can be accurately determined according to the pressure data in the embodiment, the data accuracy of the cooling water flow rate is ensured, and the control accuracy of the cooling water system is ensured.

[0087] The control device 700 of the cooling water system in the embodiment can accurately determine the cooling water flow rate according to the pressure data, ensure the data accuracy of the cooling water flow rate, and improve the control accuracy of the cooling water system.

[0088] In some embodiments, the control device 700 of the cooling water system provided in the embodiment of the present application further comprises:

[0089] The processing unit 704 is configured to determine position information of the steel material to be rolled according to the pressure data, wherein the steel material to be rolled is a steel material rolled by a rolling mill.

[0090] The processing unit 704 is configured to determine the opening time according to the position information.

[0091] In some embodiments, the control device 700 of the cooling water system provided in the embodiment of the present application further comprises:

[0092] The processing unit 704 is configured to determine a generation mode of the rolling mill according to the pressure data.

[0093] The processing unit 704 is configured to determine the cooling water flow rate according to the generation mode.

[0094] In some embodiments, the control device 700 of the cooling water system provided in the embodiment of the present application further comprises:

[0095] The processing unit 704 is configured to obtain a preset cooling water setting model and a water distribution of the cooling water nozzle.

[0096] The processing unit 704 is configured to perform data processing on the water distribution and the generation mode by using the cooling water setting model to obtain the cooling water flow rate.

[0097] In some embodiments, the control device 700 of the cooling water system provided in the embodiment of the present application further comprises:

[0098] The control unit 706 is configured to check the flow rate of the cooling water pipeline by using the electromagnetic flowmeter to obtain a real-time flow rate.

[0099] The control unit 706 is configured to adjust the regulating valve according to the real-time flow rate.

[0100] In some embodiments, the control device 700 of the cooling water system provided in the embodiment of the present application further comprises:

[0101] The control unit 706 is configured to supply cooling water to the cooling water pipeline and the cooling water nozzle by the high-pressure water supply pump.

[0102] In some embodiments, as shown in FIG. 8, a control device 800 of a cooling water system is provided, which includes a processor 802 and a memory 804, and the memory 804 stores a computer program which, when executed by the processor 802, implements the steps of the control method of the cooling water system according to any one of the above embodiments. Therefore, the control device 800 of the cooling water system has all the beneficial effects of the control method of the cooling water system according to any one of the above embodiments, which will not be repeated here. Figure 3

[0103] In some embodiments, a readable storage medium is provided, which stores a program, and the program, when executed by a processor, implements the steps of the control method of the cooling water system according to any one of the above embodiments, thus having all the beneficial technical effects of the control method of the cooling water system according to any one of the above embodiments.

[0104] In some embodiments, a cooling water system is provided, which includes the control device of the cooling water system according to any one of the above embodiments, and / or the readable storage medium according to any one of the above embodiments, thus having all the beneficial technical effects of the control device of the cooling water system according to any one of the above embodiments, and / or the readable storage medium according to any one of the above embodiments, which will not be repeated here.

[0105] Exemplarily, as shown in FIG. 9, the cooling water system 900 includes a pressure sensor 901, a cooling water nozzle 902, a controller 903, a magnetic flowmeter 904, a cooling water setting model 905, a regulating valve 906, a pneumatic on-off valve 907, a high-pressure water supply pump 908, and a cooling water pipeline 909. Figure 4 It should be noted that in the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0106] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage, etc.) containing computer-readable program code.

[0107]

[0108] ​​The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0109] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0110] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0111] The embodiments of the present application also provide a computer program product, which comprises computer software instructions, and when the computer software instructions are run on a processing device, the processing device executes the flow of the control method of the cooling water system.

[0112] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. 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 through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that the computer can store or be integrated into a data storage device such as a server, data center, etc. containing one or more available media. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)), etc.

[0113] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0114] In several embodiments provided in the present 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 only schematic. The division of the units is only a logical function division. In actual implementation, additional division can be made, for example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0115] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0116] In addition, each of the function units in each of the embodiments of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit.

[0117] When the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in each of the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0118] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0119] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0120] Obviously, those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and changes.

Claims

1. A control method of a cooling water system, characterized by, The cooling water system is used for cooling a roller of a rolling mill, and comprises a pressure sensor, a cooling water nozzle, a pneumatic on-off valve, and a regulating valve. The method comprises: checking, by the pressure sensor, a pressure of the roller to obtain pressure data; determining, according to the pressure data, an opening time and a cooling water flow rate, respectively; opening the pneumatic on-off valve when the opening time is reached; controlling the regulating valve to enable the cooling water nozzle to work at the cooling water flow rate after the pneumatic on-off valve is opened.

2. The method of claim 1, wherein, The determining of the opening time according to the pressure data comprises: determining, according to the pressure data, position information of a steel to be rolled, wherein the steel to be rolled is rolled by the roller; determining the opening time according to the position information.

3. The method of claim 1, wherein, The determining of the cooling water flow rate according to the pressure data comprises: determining a generation mode of the rolling mill according to the pressure data; determining the cooling water flow rate according to the generation mode.

4. The method of claim 3, wherein, The determining of the cooling water flow rate according to the generation mode comprises: obtaining a preset cooling water setting model and a water distribution of the cooling water nozzle; performing data processing on the water distribution and the generation mode by using the cooling water setting model to obtain the cooling water flow rate.

5. The method according to any one of claims 1 to 4, characterized in that, The cooling water system further comprises an electromagnetic flowmeter and a cooling water pipeline. After the controlling of the regulating valve to enable the cooling water nozzle to work at the cooling water flow rate, the method further comprises: checking, by the electromagnetic flowmeter, a flow rate of the cooling water pipeline to obtain a real-time flow rate; adjusting the regulating valve according to the real-time flow rate.

6. The method of claim 5, characterized in that, The cooling water system further comprises a high-pressure water supply pump. The method further comprises: supplying cooling water to the cooling water pipeline and the cooling water nozzle by using the high-pressure water supply pump.

7. A control device for a cooling water system, characterized in that: The cooling water system is used for cooling a roller of a rolling mill, and comprises a pressure sensor, a cooling water nozzle, a pneumatic on-off valve, and a regulating valve. The device comprises: an acquisition unit configured to check, by the pressure sensor, a pressure of the roller to obtain pressure data; a processing unit configured to determine, according to the pressure data, an opening time and a cooling water flow rate, respectively; a control unit configured to open the pneumatic on-off valve when the opening time is reached; the control unit is further configured to control the regulating valve to enable the cooling water nozzle to work at the cooling water flow rate after the pneumatic on-off valve is opened.

8. A control device for a cooling water system, characterized by comprise: a processor; a memory having a program or instructions stored therein, wherein the processor implements the steps of the control method of the cooling water system according to any one of claims 1 to 6 when executing the program or instructions in the memory.

9. A readable storage medium, characterized by, A program or instructions are stored on a readable storage medium, and the program or instructions are executed by a processor to implement the steps of the control method of the cooling water system according to any one of claims 1 to 6.

10. A cooling water system characterized by, comprise: the control device of the cooling water system according to claim 7 or 8; and / or the readable storage medium according to claim 9.

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