Rolling mill steel plate temperature drop regulation control system and method

Abstract

The present invention belongs to the technical field of steel rolling process control in the metallurgical industry, and relates to a temperature drop regulation control system and method for a rolling mill steel plate, including: a detection component for obtaining the temperature information of the steel plate and the rolling force information of the rolling mill; a valve component including a first valve and a second valve, the first valve being used to open or close the cooling water tank, and the second valve being used to adjust the flow rate of the cooling water tank; a control module for controlling the first valve to perform an opening or closing action, and controlling the second valve to perform a target valve position adjustment action. The technical solution of the present application can accurately adjust the flow rate of the cooling water tank according to the steel type, specification, and rolling temperature of the steel plate, so that the steel plate can accurately reach the final rolling temperature range after the fine rolling is completed, which not only increases the qualified rate of steel plate production, but also improves the production efficiency of the steel plate.

Description

Technical Field

[0001] The present invention relates to the technical field of steel rolling process control in the metallurgical industry, and in particular to a rolling mill steel plate temperature drop regulating control system and method thereof. Background Art

[0002] At present, the prior art generally adopts rough rolling and finishing rolling double-frame rolling in the rolling process of the billet, and an intermediate cooling system is provided between the rough rolling and the finishing rolling for cooling the intermediate billet after the rough rolling. Since the temperature of the intermediate billet is relatively high after the rough rolling and before the finishing rolling, the intermediate billet after the rough rolling is generally cooled by the swing cooling method and watering by the intermediate cooling system to shorten the cooling and waiting time of the intermediate billet. Although the prior art can shorten the cooling and waiting time of the intermediate billet to a certain extent, the increase in the rolling length of the billet occupies a longer roller in the actual billet rolling process, which leads to a reduction in the number of intermediate billets that are cooled by the swing cooling method, and in the high temperature environment in summer, the deterioration of the heat dissipation conditions of the intermediate billet will also affect the waiting time. Therefore, the existing cooling method still needs a long temperature drop time in the cooling and temperature drop process of the intermediate billet, which leads to the problem of low rolling efficiency of steel plate production. Summary of the invention

[0003] In view of the shortcomings of the prior art described above, an object of the present invention is to provide a rolling mill steel plate temperature drop regulation control system and method thereof, which is used to solve the problem that the existing cooling method still requires a long temperature drop time during the cooling and temperature drop process of the intermediate rolling billet, thereby resulting in low rolling efficiency.

[0004] In order to achieve the above-mentioned and other related purposes, the present invention provides a rolling mill steel plate temperature drop adjustment control system and method thereof, comprising:

[0005] A detection component, used to obtain the temperature information of the steel plate and the rolling force information of the rolling mill;

[0006] The valve assembly comprises a first valve and a second valve, wherein the first valve is used to open or close the cooling water tank, and the second valve is used to adjust the flow rate of the cooling water tank;

[0007] A control module is used to compare the temperature information with the preset target temperature information to generate a comparison result, and determine the target valve position of the second valve based on the comparison result. The control module controls the second valve to perform an adjustment action of the target valve position. The control module is used to control the first valve to perform an opening action according to the rolling force information. When the temperature information disappears, the control module controls the first valve to perform a closing action.

[0008] Optionally, the detection component includes a first detection element and a second detection element, the first detection element is used to detect rolling force information of the rolling mill, and the second detection element is used to detect temperature information of the steel plate.

[0009] Optionally, a cooling component includes a cooling pipeline and a cooling water tank, the cooling pipeline is connected to the cooling water tank, the cooling pipeline is used to transport the cooling medium to the cooling water tank, and the cooling water tank is used to transport the cooling medium to the steel plate for cooling.

[0010] Optionally, the cooling pipeline includes a cooling main pipeline, a cooling branch pipeline and a cooling branch pipeline, the first valve is arranged at an end of the cooling branch pipeline away from the cooling water tank, the second valve is arranged at an end of the cooling branch pipeline close to the cooling water tank, and the cooling water tank is connected to the cooling branch pipeline.

[0011] Optionally, the control module is integrated on a rolling mill control console, and signal transmission is performed between the control module and the first detection element and the second detection element.

[0012] Optionally, the cooling pipeline, the cooling water tank and the rolling mill frame are arranged in sequence along the transmission direction of the rolling mill roller table.

[0013] Optionally, the first detection element is arranged on the rolling mill frame, the second detection element is arranged on the cooling main line, the cooling water tank is arranged along the width direction of the rolling mill roller table, and a cooling water tank is respectively provided on the upper and lower sides of the rolling mill roller table.

[0014] Optionally, the first valve is a pneumatic on-off valve, the second valve is an electric regulating valve, the first detection element is a pressure sensor, and the second detection element is a temperature sensor.

[0015] The present invention provides a method for controlling the temperature drop of a steel plate in a rolling mill, comprising:

[0016] Obtaining the temperature information of the steel plate and the rolling force information of the rolling mill;

[0017] Comparing the temperature information with preset target temperature information to generate a comparison result;

[0018] Based on the comparison result, determining a target valve position adjustment action signal of the second valve;

[0019] According to the regulating action signal, controlling the second valve to perform the regulating action of the target valve position;

[0020] Based on the rolling force information, determining an opening action signal of the first valve;

[0021] According to the opening action signal, the first valve is controlled to perform the opening action.

[0022] In an exemplary embodiment of the present invention, after controlling the first valve to perform the opening action according to the opening action signal, the method further includes:

[0023] When the temperature information disappears, a closing action signal of the first valve is generated;

[0024] Based on the closing action signal of the first valve, the first valve is controlled to perform a closing action.

[0025] As described above, the present invention has the following beneficial effects: the present application detects the temperature information and rolling force information of the steel plate being rolled on the rolling mill by using a detection component, compares the detected temperature information with the preset final rolling target temperature information, determines the adjustment action signal of the target valve position of the second valve according to the temperature information of the current steel plate and the preset temperature information, and the control module controls the second valve to perform the target valve position adjustment action of the second valve according to the adjustment action signal of the target valve position of the second valve. When the steel plate enters the rolling mill, based on the detected rolling force information, the action signal for triggering the opening of the first valve is determined, and the control module controls the first valve to perform the opening action according to the opening action signal. When the temperature information disappears, that is, the temperature information cannot be detected, the control module controls the first valve to perform the closing action. By adopting the technical solution of the present application, during the entire rolling process of the steel billet, the finishing mill can realize the "as-is rolling" of the steel plate, effectively shortening the waiting time of the steel plate before entering the finishing mill, and the technical solution of the present application can accurately adjust the flow rate of the cooling water tank according to the steel type, specification and starting rolling temperature of the steel plate, so that the steel plate can accurately reach the final rolling temperature range after the finishing rolling, thereby increasing the qualified rate of the steel plate and improving the production efficiency of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a schematic diagram of the structure of a rolling mill steel plate temperature drop adjustment control system in an embodiment of the present application;

[0027] Figure 2 The flowchart of the rolling mill steel plate temperature drop adjustment control method shown in the embodiment of the present application is shown;

[0028] Figure 3 Shown is a flowchart after step S160 in a rolling mill steel plate temperature drop adjustment control method shown as an exemplary embodiment of the present application.

[0029] Part Number Description

[0030] The first detection element 1, the second detection element 2, the first valve 3, the second valve 4, the cooling water tank 5, the cooling main pipeline 6, the cooling main branch pipeline 7, the cooling branch pipeline 8, the rolling mill 9, the rolling mill roller table 10, and the steel plate 11. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0032] See also Figures 1 to 3 It should be noted that the diagrams provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagrams only show the components related to the present invention rather than drawing according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation can be changed at will, and the component layout type may also be more complicated. The structure, proportion, size, etc. drawn in the drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should fall within the scope of the technical content disclosed by the present invention without affecting the effect and purpose that the present invention can produce. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0033] Before describing the embodiments of the present invention in detail, the application environment of the present invention is described first. The technology of the present invention is mainly applied to the field of steel rolling process control technology in the metallurgical industry. The present invention solves the problem that the existing cooling method still requires a long temperature drop time during the cooling and temperature drop process of the intermediate rolling billet, thereby causing low rolling efficiency.

[0034] Please combine Figure 1 As shown, the present invention provides a rolling mill steel plate temperature drop regulation control system, comprising:

[0035] In an exemplary embodiment of the present application, a detection component is used to obtain temperature information of the steel plate 11 and rolling force information of the rolling mill 9; a valve component includes a first valve 3 and a second valve 4, the first valve 3 is used to open or close the cooling water tank 5, and the second valve 4 is used to adjust the flow rate of the cooling water tank 5; a control module is used to compare the temperature information with the preset target temperature information, generate a comparison result, and determine the target valve position of the second valve 4 based on the comparison result, the control module controls the second valve 4 to perform the adjustment action of the target valve position, and the control module is used to control the first valve 3 to perform an opening action according to the rolling force information, and when the temperature information disappears, the control module controls the first valve 3 to perform a closing action.

[0036] In this embodiment, the detection component includes a first detection element 1 and a second detection element 2. The first detection element 1 is a pressure sensor, which is used to detect the pressure generated when the finishing mill 9 bites the steel during the finishing rolling process of the steel plate 11. The second detection element 2 is a temperature sensor, which is used to detect the temperature of the steel plate 11 on the roller of the rolling mill 9. When the temperature sensor detects the temperature of the steel plate 11, the control module determines the target valve position adjustment signal of the second valve 4 based on the specifications of the steel plate 11 and the current target final rolling temperature of the steel plate 11, and triggers the control module to control the second valve 4 to perform the target valve position adjustment action to control the water output of the cooling water tank 5; when the finishing mill 9 detects the pressure information of biting the steel, the pressure information is transmitted to the control module, which triggers the control module to control the first valve 3 to perform the opening action to open the cooling water tank 5 to cool the steel plate 11. By adopting the technical solution of the present application, the steel plate 11 no longer needs a long waiting time for temperature drop during the rolling process, and the steel plate 11 can be "rolled as soon as it enters the finishing mill 9". In addition, by automatically adjusting and controlling the second valve 4 through the temperature sensor and the control module, the steel plate 11 can accurately reach the target final rolling temperature after the finishing rolling is completed, which not only improves the rolling efficiency of the steel plate 11, but also improves the qualified rate of the rolled products of the steel plate 11.

[0037] In an exemplary embodiment of the present application, the detection assembly includes a first detection element 1 and a second detection element 2 , the first detection element 1 is used to detect rolling force information of the rolling mill 9 , and the second detection element 2 is used to detect temperature information of the steel plate 11 .

[0038] In this embodiment, the first detection element 1, i.e., the pressure sensor, is arranged on the rolling mill 9, and the second detection element 2, i.e., the temperature sensor, is arranged on the cooling main line 6. The temperature sensor and the pressure sensor are arranged in sequence along the transmission direction of the roller table of the rolling mill 9. When the rough rolling of the steel plate 11 is completed and before entering the finishing mill 9, the temperature sensor first detects the temperature information of the steel plate 11, and transmits the temperature information of the steel plate 11 to the control module. The control module combines the target final rolling temperature of the steel plate 11 with the current temperature information, thereby determining the valve position of the second valve 4, i.e., the electric regulating valve, i.e., determining the cooling water tank 5. flow size; when the steel plate 11 enters the finishing mill 9 for rolling, when the pressure sensor detects the rolling force information of the finishing mill 9 when biting the steel, the trigger control module sends a signal to control the first valve 3, i.e., the pneumatic opening and closing valve, to perform a valve opening action, thereby opening the cooling water tank 5, and combined with the second valve 4 that has been adjusted to a suitable valve position, i.e., the determined flow size of the cooling water tank 5, the steel plate 11 is cooled down. When the temperature sensor cannot detect the temperature of the steel plate 11, i.e., the temperature information disappears, the trigger control module sends a signal to control the first valve 3, i.e., the pneumatic opening and closing valve, to perform a valve closing action. By adopting the technical solution of the present application, since the temperature sensor, the cooling water tank 5 and the rolling mill 9 are arranged in sequence along the transmission direction of the roller table of the rolling mill 9 and have a certain spacing, when the steel plate 11 enters the finishing mill 9 and the pressure sensor triggers the first valve 3 to open, at this time, the head of the steel plate 11 has entered the finishing process, and the cooling water tank 5 will no longer cool the head of the steel plate 11. When the temperature sensor cannot detect the temperature information of the steel plate 11, the control module is triggered to control the first valve 3 to execute the closing action. At this time, the cooling water tank 5 is closed, that is, the cooling water tank 5 is closed. The water tank 5 no longer cools the tail of the steel plate 11, thereby shielding the head and tail of the steel plate 11 during the cooling process. Since the head and tail of the steel plate 11 dissipate heat faster than the rest of the steel plate 11, the shielding of the head and tail of the steel plate 11 in this solution can effectively avoid the risk of the head and tail of the steel plate 11 being rolled warped during the finishing rolling process due to overcooling, effectively improving the product quality of the rolled steel plate 11, and accurately reaching the target final rolling temperature of the steel plate 11 when the finishing rolling is completed.

[0039] In an exemplary embodiment, the cooling assembly includes a cooling pipeline and a cooling water tank 5, the cooling pipeline is connected to the cooling water tank 5, the cooling pipeline is used to transport the cooling medium to the cooling water tank 5, and the cooling water tank 5 is used to transport the cooling medium to the steel plate 11 for cooling.

[0040] In this embodiment, the cooling water tank 5 is arranged between the roughing mill 9 and the finishing mill 9 to cool the steel plate 11 after the roughing rolling is completed and before the finishing rolling. The cooling water tank 5 is arranged on the upper and lower sides of the roller of the rolling mill 9 across the roller of the rolling mill 9 to cool the upper and lower surfaces of the steel plate 11 respectively. The cooling pipeline is arranged on one side of the roller of the rolling mill 9 along the transmission direction of the roller of the rolling mill 9. The cooling pipeline is connected to the cooling water tank 5 for transporting the cooling medium to the cooling water tank 5.

[0041] In an exemplary embodiment, the cooling pipeline includes a cooling main pipeline 6, a cooling branch pipeline and a cooling branch pipeline. The first valve 3 is arranged at one end of the cooling branch pipeline away from the cooling water tank 5, and the second valve 4 is arranged at one end of the cooling branch pipeline close to the cooling water tank 5. The cooling water tank 5 is connected to the cooling branch pipeline.

[0042] In this embodiment, the cooling main pipeline 6 is arranged parallel to the roller table of the rolling mill 9 along the transmission direction of the roller table of the rolling mill 9, and is arranged on one side of the roller table of the rolling mill 9. The cooling branch pipeline is connected to the cooling main pipeline 6, and the cooling branch pipeline is connected to the cooling branch pipeline. The cooling branch pipeline is set in two, which are respectively connected to the cooling water tanks 5 on the upper and lower sides of the roller table of the rolling mill 9. The first valve 3, that is, the pneumatic opening and closing valve, is arranged at one end of the cooling branch pipeline away from the cooling water tank 5, and is used to open or close the cooling water tank 5. The second valve 4, that is, the electric regulating valve, is arranged at one end close to the cooling water tank 5, and is used to adjust the flow rate of the cooling water tank 5.

[0043] In an exemplary embodiment, the control module is integrated on the control console of the rolling mill 9 , and signal transmission is performed between the control module and the first detection element 1 and the second detection element 2 .

[0044] In this embodiment, the control module is integrated in the first-level interface of steel rolling control. The opening or closing state of the first valve 3, i.e., the pneumatic on-off valve, is controlled by the rolling force information of the rolling mill 9 biting the steel and the temperature information of the steel plate 11. The target valve position adjustment action of the second valve 4, i.e., the electric regulating valve, is controlled by the steel type and specification of the steel plate 11, the detected temperature of the steel plate 11 before the start of finishing rolling, and the preset target final rolling temperature.

[0045] In an exemplary embodiment, the cooling pipeline, the cooling water tank 5 and the rolling mill 9 are arranged in sequence along the transmission direction of the roller table of the rolling mill 9 .

[0046] In this embodiment, the cooling water tank 5 is arranged between the rolling mill 9 and the cooling pipeline, and there is a distance between the cooling water tank 5 and the rolling mill 9, so that when the finishing rolling, i.e. the biting rolling force triggers the first valve 3 to open, the head of the steel plate 11 is prevented from being overcooled and warped. The temperature sensor is arranged on the cooling main line 6, and there is a certain distance between the temperature sensor and the cooling main line 6, so that when the steel plate 11 is transmitted to leave the detection range of the temperature sensor, i.e. the temperature sensor cannot detect the temperature of the steel plate 11, the trigger control module controls the first valve 3, i.e. the pneumatic opening and closing valve to close the valve, which can effectively prevent the tail of the steel plate 11 from being overcooled and causing warping, thereby improving the product quality of the rolled steel plate 11.

[0047] In an exemplary embodiment, the first detection element 1 is arranged on the rolling mill 9, the second detection element 2 is arranged on the cooling main line 6, the cooling water tank 5 is arranged along the width direction of the roller of the rolling mill 9, and a cooling water tank 5 is respectively provided on the upper and lower sides of the roller of the rolling mill 9.

[0048] In an exemplary embodiment, the first valve 3 is a pneumatic on-off valve, the second valve 4 is an electric regulating valve, the first detection element 1 is a pressure sensor, and the second detection element 2 is a temperature sensor.

[0049] The present invention provides a method for regulating and controlling the temperature drop of a steel plate 11 of a rolling mill 9, which is based on the temperature drop regulating and controlling system of the steel plate 11 according to any one of claims 1-8.

[0050] See also Figure 2 , Figure 2 It is a flow chart of a method for regulating and controlling the temperature drop of a steel plate 11 of a rolling mill 9 according to an embodiment of the present application.

[0051] like Figure 2 In an exemplary embodiment, the temperature drop control method of the steel plate 11 of the rolling mill 9 includes at least steps S110 to S160, which are described in detail as follows:

[0052] Step S110 , obtaining temperature information of the steel plate 11 and rolling force information of the rolling mill 9 .

[0053] Exemplarily, the temperature information of the steel plate 11 transmitted to the temperature sensor sensing area after the rough rolling is completed is detected by a temperature sensor arranged on the cooling main line 6. When the steel plate 11 is transmitted to the finishing rolling mill 9, the pressure sensor detects the rolling force information when the rolling mill 9 bites the steel.

[0054] Step S120, comparing the temperature information with the preset target temperature information to generate a comparison result.

[0055] Exemplarily, the current temperature information of the steel plate 11 detected by the temperature sensor is transmitted to the control module and compared with the target final rolling temperature information of the current steel plate 11 preset in the control module to determine the valve position adjustment action signal of the second valve 4, i.e., the electric regulating valve, to determine the flow rate of the cooling water tank 5.

[0056] Step S130 , determining a target valve position adjustment action signal of the second valve 4 based on the comparison result.

[0057] Step S140, controlling the second valve 4 to perform an adjustment action of the target valve position according to the adjustment action signal.

[0058] Exemplarily, the control module controls the second valve 4, i.e., the electric regulating valve, to adjust the current valve position to the target valve position according to the adjustment action signal, so as to adjust the flow rate of the cooling water tank 5 to cool the current temperature of the steel plate 11, so as to ensure that the steel plate 11 can accurately reach the target final rolling temperature after the finishing rolling is completed.

[0059] Step S150: determining an opening action signal of the first valve 3 based on the rolling force information.

[0060] Exemplarily, based on the rolling force information detected by the pressure sensor, the control module is triggered to send a valve opening action signal to control the first valve 3, ie, the pneumatic opening and closing valve.

[0061] Step S160, controlling the first valve 3 to perform an opening action according to the opening action signal.

[0062] Exemplarily, the control module sends an opening action signal to control the pneumatic on-off valve to perform the valve opening action, so as to open the cooling water tank 5 to cool the steel plate 11 .

[0063] In this embodiment, when the temperature of the steel plate 11 is high before entering the finishing rolling after the rough rolling, it is necessary to cool the steel plate 11 by cooling or cooling with cooling equipment, but this process requires a long waiting time, and the production efficiency is low. Through the temperature drop control method of the steel plate 11 of the rolling mill 9 of the present application, it is possible to properly adjust the flow of the cooling water tank 5 according to the temperature of the steel plate 11, so that the steel plate 11 does not need to be cooled and wait for temperature before entering the finishing rolling after the rough rolling, saving the waiting time, and realizing the efficient production process of the steel plate 11 of the finishing mill 9 "rolling as soon as it comes", and by arranging the cooling water tank 5 before the finishing mill 9, when the head of the steel plate 11 enters the finishing mill 9, the pneumatic opening and closing valve is triggered to open, that is, the cooling water tank 5 is opened, which can avoid the head of the steel plate 11 from being rolled warped due to overcooling of the head of the steel plate 11.

[0064] See also Figure 3 , Figure 3It is a flowchart after step S160 in a method for controlling the temperature drop of a steel plate 11 of a rolling mill 9 according to an exemplary embodiment of the present application.

[0065] like Figure 3 As shown, in an exemplary embodiment, after controlling the first valve 3 to perform the opening action according to the opening action signal, at least steps S210 to S220 are included.

[0066] Step S210: When the temperature information disappears, a closing action signal of the first valve 3 is generated.

[0067] Exemplarily, when the steel plate 11 is transferred to a detection area far away from the temperature sensor, the temperature sensor triggers the control module to send a control signal to control the first valve 3, ie, the pneumatic on-off valve, to close.

[0068] Step S220: Based on the closing action signal of the first valve 3, the first valve 3 is controlled to perform a closing action.

[0069] In this embodiment, since the temperature sensor is arranged before the cooling water tank 5 along the transmission direction of the roller of the rolling mill 9, when the temperature sensor detects that the temperature signal of the steel plate 11 disappears, it triggers the control module to close the pneumatic shut-off valve, that is, to close the cooling water tank 5. Therefore, when the tail of the steel plate 11 reaches the cooling water tank 5, it can also avoid the tail of the steel plate 11 being over-cooled by the cooling water tank 5 at the end of the finishing rolling, causing the tail of the steel plate 11 to be warped.

[0070] Working principle: This application uses a detection component to detect the temperature information and rolling force information of the steel plate 11 being rolled on the rolling mill 9, compares the detected temperature information with the preset final rolling target temperature information, and determines the adjustment action signal of the target valve position of the second valve 4 according to the current temperature information of the steel plate 11 and the preset temperature information. The control module controls the second valve 4 to perform the target valve position adjustment action of the second valve 4 according to the adjustment action signal of the target valve position of the second valve 4. When the steel plate 11 enters the rolling mill 9, based on the detected rolling force information, the action signal for triggering the opening of the first valve 3 is determined, and the control module controls the first valve 3 to perform the opening action according to the opening action signal. When the temperature information disappears, that is, the temperature information cannot be detected, the control module controls the first valve 3 to perform the closing action. By adopting the technical solution of the present application, during the entire rolling process of the steel billet, the finishing mill 9 can realize the "rolling as soon as it arrives" of the steel plate 11, effectively shortening the waiting time of the steel plate 11 before entering the finishing mill 9 for rolling, and the technical solution of the present application can accurately adjust the flow rate of the cooling water tank 5 according to the steel type, specification, and starting rolling temperature of the steel plate 11, so that the steel plate 11 can accurately reach the final rolling temperature range after the finishing rolling is completed, thereby increasing the qualified rate of the steel plate 11 and improving the production efficiency of the steel plate 11.

[0071] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A rolling mill steel plate temperature drop regulation control system, characterized in that: include: A detection component, used to obtain the temperature information of the steel plate and the rolling force information of the rolling mill; The valve assembly comprises a first valve and a second valve, wherein the first valve is used to open or close the cooling water tank, and the second valve is used to adjust the flow rate of the cooling water tank; a control module, configured to compare the temperature information with preset target temperature information to generate a comparison result, determine the target valve position of the second valve based on the comparison result, and control the second valve to perform an adjustment action of the target valve position; the control module is configured to control the first valve to perform an opening action according to the rolling force information, and control the first valve to perform a closing action when the temperature information disappears; The detection assembly comprises a first detection element and a second detection element, wherein the first detection element is used to detect rolling force information of the rolling mill, and the second detection element is used to detect temperature information of the steel plate; It also includes: a cooling assembly, the cooling assembly includes a cooling pipeline and a cooling water tank, the cooling pipeline is connected to the cooling water tank, the cooling pipeline is used to transport the cooling medium to the cooling water tank, and the cooling water tank is used to transport the cooling medium to the steel plate for cooling; The cooling pipeline, the cooling water tank and the rolling mill are arranged in sequence along the transmission direction of the rolling mill roller table.

2. The rolling mill steel plate temperature drop control system according to claim 1, characterized in that: The cooling pipeline includes a cooling main pipeline, a cooling branch pipeline and a cooling branch pipeline. The first valve is arranged at an end of the cooling branch pipeline away from the cooling water tank, and the second valve is arranged at an end of the cooling branch pipeline close to the cooling water tank. The cooling water tank is connected to the cooling branch pipeline.

3. The rolling mill steel plate temperature drop control system according to claim 1, characterized in that: The control module is integrated on the rolling mill control console, and signal transmission is performed between the control module and the first detection element and the second detection element.

4. The rolling mill steel plate temperature drop control system according to claim 2, characterized in that: The first detection element is arranged on the rolling mill, the second detection element is arranged on the main cooling line, the cooling water tank is arranged along the width direction of the rolling mill roller table, and a cooling water tank is respectively arranged on the upper and lower sides of the rolling mill roller table.

5. The rolling mill steel plate temperature drop control system according to claim 4, characterized in that: The first valve is a pneumatic on-off valve, the second valve is an electric regulating valve, the first detection element is a pressure sensor, and the second detection element is a temperature sensor.

6. A method for regulating and controlling the temperature drop of steel plates in a rolling mill, based on the steel plate temperature drop regulating and controlling system according to any one of claims 1 to 5, characterized in that: include: Obtaining the temperature information of the steel plate and the rolling force information of the rolling mill; Comparing the temperature information with preset target temperature information to generate a comparison result; Based on the comparison result, determining a target valve position adjustment action signal of the second valve; According to the regulating action signal, controlling the second valve to perform the regulating action of the target valve position; Based on the rolling force information, determining an opening action signal of the first valve; According to the opening action signal, the first valve is controlled to perform the opening action.

7. The method for controlling the temperature drop of steel plate in a rolling mill according to claim 6, characterized in that: After controlling the first valve to perform the opening action according to the opening action signal, the method further includes: When the temperature information disappears, a closing action signal of the first valve is generated; Based on the closing action signal of the first valve, the first valve is controlled to perform a closing action.

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