A control method, device, electronic device and medium for a squeezing roller

Abstract

The present invention discloses a method, device, electronic device, and medium for controlling a squeeze roller, which are applied to a pickling and tandem mill. The method comprises: detecting the operating speed of a tension roller preceding the pickling section; determining a status signal for the pickling section based on the operating speed, wherein the status signal includes a stop signal and an operation signal; and controlling a shut-off position signal for the squeeze roller in the tandem mill based on the status signal, wherein the shut-off position signal indicates a signal for shutting down the squeeze roller. This control method can effectively reduce the number of stoppages in the pickling section and reduce strip loss, while also lowering the risk of abnormal stoppages in the pickling section, thereby increasing the service life and production efficiency of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of cold-rolled strip pickling, and in particular to a control method, device, electronic equipment and medium for a squeeze roller. Background Art

[0002] The pickling and cold rolling production line at a certain cold rolling mill produces a wide range of steel grades, including low-carbon steel, standard carbon steel, and high-strength steel. Product thicknesses range from 0.4 to 2.5 mm, and finished product widths range from 750 to 1580 mm. The pickling section primarily cleans the surface of the hot-rolled strip of iron oxide. Squeezing rollers are located before, between, and after the pickling tanks. Their primary function is to squeeze the acid from the strip surface, preventing acid cross-contamination between the pickling tanks and rinse tanks, and ensuring the pickling quality of the strip. The pickling section's squeezing rollers are closed during normal operation. There are 12 pairs of squeezing rollers in the pickling section. Squeezing roller #1 is only used when reversing before starting the pickling section and is generally open. The remaining 11 pairs of squeezing rollers are closed during production. The existing pickling section's squeezing roller closed position is detected by proximity switches. If the signal is lost during production, the pickling section will stop inadvertently, reducing production efficiency. Summary of the Invention

[0003] The embodiments of the present application provide a control method, device, electronic equipment and medium for a squeeze roller, which can effectively reduce the number of shutdowns in the pickling section and reduce strip loss, while reducing the risk of abnormal shutdowns in the pickling section and improving the service life and production efficiency of the equipment.

[0004] In a first aspect, the present invention provides the following technical solutions through an embodiment of the present invention:

[0005] A method for controlling a squeeze roller is applied to a pickling and continuous rolling mill. The method comprises: detecting the operating speed of a tension roller before a pickling section; determining a status signal of the pickling section based on the operating speed, wherein the status signal comprises a stop signal and an operation signal; and controlling a closing position signal of a squeeze roller in the continuous rolling mill based on the status signal, wherein the closing position signal represents a signal for controlling the closing of the squeeze roller.

[0006] Preferably, controlling the closing position signal of the squeeze roller in the continuous rolling mill based on the status signal includes: if it is detected that the status signal is the running signal, locking the closing position signal of the squeeze roller until the status signal is the parking signal, and then unlocking the closing position signal.

[0007] Preferably, determining the status signal of the pickling section based on the running speed includes: if it is detected that the running speed is greater than or equal to a preset speed threshold, determining that the status signal of the pickling section is a running signal; if it is detected that the running speed is continuously less than the preset speed threshold within a preset time threshold, determining that the status signal of the pickling section is a stop signal.

[0008] Preferably, the preset speed threshold is in the range of 3-8 m / min.

[0009] Preferably, the method further comprises: when the pickling section is in a stop signal, if a closing position signal of the squeezing roller is not detected, prohibiting the pickling section from starting.

[0010] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0011] A control device for a squeeze roller, comprising:

[0012] Detection module, used to detect the running speed of the tension roller before the pickling section;

[0013] a state determination module, configured to determine a state signal of the pickling section based on the operating speed, wherein the state signal includes a stop signal and an operating signal;

[0014] The control module is used to control the closing position signal of the squeeze roller in the continuous rolling mill group based on the state signal, and the closing position signal represents a signal for controlling the closing of the squeeze roller.

[0015] Preferably, controlling the closing position signal of the squeeze roller in the continuous rolling mill based on the status signal includes: if it is detected that the status signal is the running signal, locking the closing position signal of the squeeze roller until the status signal is the parking signal, and then unlocking the closing position signal.

[0016] Preferably, determining the status signal of the pickling section based on the running speed includes: if it is detected that the running speed is greater than or equal to a preset speed threshold, determining that the status signal of the pickling section is a running signal; if it is detected that the running speed is continuously less than the preset speed threshold within a preset time threshold, determining that the status signal of the pickling section is a stop signal.

[0017] In a third aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0018] An electronic device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any one of the methods described in the first aspect are implemented.

[0019] In a fourth aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0020] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method described in any one of the first aspects above.

[0021] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0022] The control method for the squeeze roller provided in an embodiment of the present invention first detects the running speed of the tension roller before the pickling section, determines the status signal of the pickling section, wherein the status signal is a stop signal and a running signal, and then controls the closing position signal of the squeeze roller in the continuous rolling mill based on the status signal. This control method controls the closing position signal of the squeeze roller in the continuous rolling mill based on the status signal of the pickling section, so that the closing position signal of the squeeze roller can only be updated when the status signal of the pickling section changes. The status signal of the pickling section is determined based on the more accurate movement of the tension roller, thereby effectively reducing the number of shutdowns in the pickling section and effectively reducing the loss of strip steel. At the same time, it reduces the risk of abnormal shutdown of the pickling section and improves the service life and production efficiency of the equipment. The present application can effectively avoid the occurrence of pickling section shutdown accidents due to abnormal squeeze roller signals, while ensuring that maintenance personnel can still promptly discover and handle abnormalities in the squeeze roller body when they occur, thereby ensuring stable production of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the locations of the squeeze rollers, acid tanks, and rinse tanks provided in an embodiment of the present invention;

[0025] Figure 2 A flow chart of a method for controlling a squeeze roller according to an embodiment of the present invention;

[0026] Figure 3 A schematic structural diagram of a control device for a squeeze roller according to an embodiment of the present invention;

[0027] Figure 4 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] like Figure 1As shown in the figure, the equipment position relationship of the squeezing roller, pickling tank and rinsing tank is introduced. The strip runs from the squeezing roller to the pickling tank, where 1 is the 1# squeezing roller, 2 is the 1# pickling tank, 3 is the 2# squeezing roller, 4 is the 2# pickling tank, 5 is the 3# squeezing roller, 6 is the 3# pickling tank, 7 is the 4#, 5#, 6# and 7# squeezing rollers, 8 is the 1# rinsing tank, 9 is the 8# squeezing roller, 10 is the 2# rinsing tank, 11 is the 9# squeezing roller, 12 is the 3# rinsing tank, 13 is the 10# squeezing tank, 14 is the 4# rinsing tank, 15 is the 11# squeezing tank, and 17 is the strip.

[0029] The inventors discovered that the closed position of the squeezing rollers in the pickling section is detected by a proximity switch. If the signal is lost during production, the pickling section will be shut down. The harsh on-site environment in the pickling tank area can easily cause abnormalities in the switch body and cables, leading to signal loss and causing the pickling section to shut down. If a similar situation occurs, the production line will generally seal the point first to ensure that the pickling section starts as soon as possible and reduce the downtime of accidents. However, frequent sealing of points poses the risk of misoperation, which may lead to the expansion of faults and prolong the time it takes to handle the fault. Abnormal shutdown of the pickling section not only reduces the normal service life of the equipment, but also the repeated start and stop of the pickling section seriously affects the pickling quality of the strip, and there is also the risk of strip breakage accidents caused by over-pickling. These are all unstable factors that restrict the stable production of the production line and restrict the release of the production line's production capacity.

[0030] During normal production, the squeeze rollers (2# to 12#) are in the closed state. The reason for the shutdown due to signal loss is generally due to signal abnormality, and there is no abnormality in the squeeze rollers themselves. Therefore, in order to ensure stable operation of the production line, the squeeze roller detection signal needs to be optimized.

[0031] In view of this, the embodiments of the present application provide a control method, device, electronic equipment and medium for the squeeze roller, which can effectively reduce the number of shutdowns in the pickling section and reduce strip loss, while reducing the risk of abnormal shutdowns in the pickling section and improving the service life and production efficiency of the equipment.

[0032] The overall idea of the technical solution of the embodiment of this application is as follows:

[0033] A method for controlling a squeeze roller is applied to a pickling and continuous rolling mill. The method comprises: detecting the operating speed of a tension roller before a pickling section; determining a status signal of the pickling section based on the operating speed, wherein the status signal comprises a stop signal and an operation signal; and controlling a closing position signal of a squeeze roller in the continuous rolling mill based on the status signal, wherein the closing position signal represents a signal for controlling the closing of the squeeze roller.

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0035] In a first aspect, an embodiment of the present invention provides a method for controlling a squeeze roller, specifically, Figure 2 As shown, the method includes the following steps S101 to S103.

[0036] Step S101, detecting the running speed of the tension roller before the pickling section.

[0037] The tension roller converts the torque applied by the drive device into strip tension through friction between the roller surface and the strip. In the specific implementation process, the operating speed of the tension roller before the pickling section can be detected by a speed sensor to obtain the operating speed.

[0038] Step S102: determining a status signal of the pickling section based on the operating speed, wherein the status signal includes a stop signal and an operating signal.

[0039] In a specific embodiment, determining the status signal of the pickling section based on the speed of the tension roller may specifically include: if it is detected that the speed of the tension roller is greater than or equal to a preset speed threshold, determining that the status signal of the pickling section is a running signal; if it is detected that the speed of the tension roller is continuously less than the preset speed threshold within a preset time threshold, determining that the status signal of the pickling section is a stop signal.

[0040] Specifically, the preset speed threshold may be in the range of 3-8 m / min, preferably, the preset speed threshold may be 5 m / min. In addition, the preset time threshold may be in the range of 3-8 s, preferably, the preset time threshold may be 5 s.

[0041] The present application determines that the pickling section is in operation when it is detected that the speed of the tension roller is greater than or equal to 5m / min, and determines that the status signal of the pickling section is an operation signal. When it is detected that the speed of the tension roller is continuously less than 5m / min within 5s, the status signal of the pickling section is determined to be a stop signal.

[0042] In this way, the determination of the state signal of the pickling section can be based on the running speed of the tension roller, making the determination of the state signal of the pickling section more stable and reliable. This method can optimize the state signal of the pickling section.

[0043] Step S103: Based on the state signal, controlling the closing position signal of the squeeze roller in the continuous rolling mill, wherein the closing position signal represents a signal for controlling the squeezing roller to be closed.

[0044] In a specific embodiment, controlling the closing position signal of the squeezing roller based on the status signal may specifically include: if it is detected that the status signal is the running signal, locking the closing position signal of the squeezing roller until the status signal is the parking signal, and then unlocking the closing position signal.

[0045] Specifically, when the pickling section is in operation, if the squeeze roller's closed position signal is lost, the pickling section will be stopped. To prevent frequent erroneous stops of the pickling section, the present application provides a method for locking the squeeze roller's closed position signal when the pickling section status signal is detected as an operation signal. This means that the squeeze roller is fixed in its current state and is only controlled by the pickling section status signal. Locking the squeeze roller's closed position signal by the pickling section operation signal ensures that during normal production, even if the squeeze roller's closed position signal is lost, the pickling section will not be stopped.

[0046] Furthermore, the method further includes: when the pickling section is in a stop signal, if the squeeze roller closed position signal is not detected, prohibiting the pickling section from starting. Specifically, in order to avoid the pickling section continuing to start and operate when a squeeze roller malfunctions (for example, a broken roller, cylinder damage, etc., causing the squeeze roller to be unable to operate normally), thereby causing an on-site fault, when it is determined that the pickling section is in a stop state, if the squeeze roller does not have a closed position signal, prohibiting the pickling section from starting. This can prevent the pickling section from starting normally when the squeeze roller is in an abnormal state. This method can effectively avoid the expansion of the fault and ensure the safety of the pickling section.

[0047] Furthermore, controlling the closing position signal of the squeeze roller in the continuous rolling mill based on the status signal may also include: controlling the closing position signal of the squeeze roller in the continuous rolling mill based on the status signal, and determining whether to send an alarm prompt.

[0048] Specifically, when the pickling section is monitored to be in operation, an alarm prompt can be sent to the display panel. By adding a screen alarm prompt function, the operator is prompted to go to the site in time to check the actual operating status of the equipment and take effective treatment measures according to the on-site situation.

[0049] In summary, the control method of the squeeze roller provided by the embodiment of the present invention can effectively reduce the number of shutdowns in the pickling section and reduce strip loss, while reducing the risk of abnormal shutdowns in the pickling section and improving the service life and production efficiency of the equipment.

[0050] In the second aspect, based on the same inventive concept, this embodiment provides a control device for a squeeze roller, such as Figure 3 As shown, including:

[0051] Detection module 401, used to detect the running speed of the tension roller before the pickling section;

[0052] A state determination module 402 is configured to determine a state signal of the pickling section based on the operating speed, wherein the state signal includes a stop signal and an operating signal;

[0053] The control module 403 is configured to control a closing position signal of a squeeze roller in the continuous rolling mill based on the state signal, wherein the closing position signal represents a signal for controlling the squeezing roller to be closed.

[0054] As an optional embodiment, the control module 403 is specifically configured to: if it is detected that the status signal is the running signal, lock the closing position signal of the squeezing roller, and unlock the closing position signal when the status signal is the parking signal.

[0055] As an optional embodiment, the state determination module 402 is specifically used to: if it is detected that the speed of the tension roller is greater than or equal to a preset speed threshold, determine that the state signal of the pickling section is a running signal; if it is detected that the speed of the tension roller is continuously less than the preset speed threshold within a preset time threshold, determine that the state signal of the pickling section is a stop signal.

[0056] As an optional embodiment, the preset speed threshold is in the range of 3-8 m / min.

[0057] As an optional embodiment, the device further includes: a starting prohibition module, which is used to prohibit the pickling section from starting if the squeeze roller closing position signal is not detected when the pickling section is in a stop signal.

[0058] The above modules can be implemented by software codes, in which case the above modules can be stored in the memory of the control device. The above modules can also be implemented by hardware such as integrated circuit chips.

[0059] The control device for a squeeze roller provided in an embodiment of the present invention has the same implementation principle and technical effects as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0060] In a third aspect, based on the same inventive concept, this embodiment provides an electronic device 500, such as Figure 4 As shown, it includes: a memory 501, a processor 502 and a computer program 503 stored in the memory and capable of running on the processor. When the processor 501 executes the program, the steps of the control method of the squeezing roller described in the first aspect are implemented.

[0061] Since the electronic device described in this embodiment is the electronic device used to implement the method for controlling the squeeze roller in the embodiment of this application, those skilled in the art will be able to understand the specific implementation and various variations of the electronic device of this embodiment based on the method for controlling the squeeze roller described in the embodiment of this application. Therefore, how the electronic device implements the method in the embodiment of this application will not be described in detail here. As long as those skilled in the art implement the electronic device used to control the squeeze roller in the embodiment of this application, it falls within the scope of protection of this application.

[0062] In the fourth aspect, based on the same inventive concept, this embodiment provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by the processor of the electronic device 500, the electronic device 500 is able to execute a method for controlling a squeezing roller, including the steps of any one of the methods described in the first aspect.

[0063] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take 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.) containing computer-usable program code.

[0064] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, 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 flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A module that specifies functions in one or more boxes.

[0065] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction module, which is implemented in the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0066] 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 A step that specifies a function in one or more boxes.

[0067] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0068] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for controlling a squeeze roller, characterized in that: Applied to a pickling and rolling mill, the method comprises: Detect the running speed of the tension roller before the pickling section; Based on the running speed, determining a status signal of the pickling section, wherein the status signal includes a stop signal and a running signal; Based on the state signal, controlling a closing position signal of a squeeze roller in the tandem rolling mill, wherein the closing position signal represents a signal for controlling the squeezing roller to be closed; The controlling of the closing position signal of the squeeze roller in the continuous rolling mill based on the state signal comprises: If the status signal is detected to be the running signal, the closing position signal of the squeeze roller is locked, and the closing position signal is unlocked when the status signal is the parking signal; When the pickling section is in the stop signal state, if the closing position signal of the squeeze roller is not detected, the pickling section is prohibited from starting.

2. The method according to claim 1, wherein Determining the state signal of the pickling section based on the operating speed includes: If it is detected that the operating speed is greater than or equal to a preset speed threshold, determining that the state signal of the pickling section is an operating signal; If it is detected that the running speed is continuously less than the preset speed threshold within the preset time threshold, it is determined that the status signal of the pickling section is a stop signal.

3. The method according to claim 2, wherein The preset speed threshold is in the range of 3-8 m / min, and the preset time threshold is in the range of 3-8 s.

4. A control device for a squeeze roller, characterized in that: include: Detection module, used to detect the running speed of the tension roller before the pickling section; a state determination module, configured to determine a state signal of the pickling section based on the operating speed, wherein the state signal includes a stop signal and an operating signal; a control module, configured to control a closing position signal of a squeeze roller in a continuous rolling mill based on the status signal, wherein the closing position signal represents a signal for controlling the squeezing roller to be closed, and wherein controlling the closing position signal of the squeeze roller in the continuous rolling mill based on the status signal comprises: if it is detected that the status signal is the running signal, locking the closing position signal of the squeeze roller, and unlocking the closing position signal when the status signal is the parking signal; The starting prohibition module is used to prohibit the pickling section from starting if the pickling section is in a stop signal and the squeeze roller closing position signal is not detected.

5. The device according to claim 4, characterized in that Determining the state signal of the pickling section based on the operating speed includes: If it is detected that the operating speed is greater than or equal to a preset speed threshold, determining that the state signal of the pickling section is an operating signal; If it is detected that the running speed is continuously less than the preset speed threshold within the preset time threshold, it is determined that the status signal of the pickling section is a stop signal.

6. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method according to any one of claims 1 to 3 are implemented.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

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