CN113290063B - Monitoring and analyzing system and monitoring and analyzing method for sheet cold rolling mill - Google Patents
Monitoring and analyzing system and monitoring and analyzing method for sheet cold rolling mill Download PDFInfo
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- CN113290063B CN113290063B CN202110532541.9A CN202110532541A CN113290063B CN 113290063 B CN113290063 B CN 113290063B CN 202110532541 A CN202110532541 A CN 202110532541A CN 113290063 B CN113290063 B CN 113290063B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The invention discloses a monitoring and analyzing system of a sheet cold rolling mill, which mainly comprises a data acquisition part and an analysis storage part, wherein the data acquisition part and the analysis storage part are in one-to-one or many-to-one relationship; the data acquisition component comprises a rotating speed sensor, a vibration sensor group, a programmable logic controller and a synchronous acquisition terminal; the analysis storage component comprises an edge computing terminal, a system server and a personnel operation computer. The invention relates to a method for correlating production parameters and vibration data of a sheet cold rolling mill with the length position of strip steel, so that an operator can comprehensively check the parameter change condition of the strip steel production at any time in the strip steel production or after the production is finished, and particularly, after the quality inspection finds that the strip steel has surface defects, the operator can compare the production parameters of the defect positions with the production parameters of other normal positions, thereby conveniently and efficiently analyzing possible reasons of the surface defects or the uneven thickness of the strip steel products.
Description
Technical Field
The invention relates to a monitoring and analyzing system and an application method thereof, in particular to an on-line monitoring and defect analyzing system for a sheet cold rolling mill and a corresponding monitoring and analyzing method thereof, and belongs to the technical field of industrial on-line monitoring.
Background
The sheet cold rolling is an important step in the production process of strip steel products, and in the strip steel rolling process, the defects of cracks, roll marks, inclusions or uneven thickness of the products and the like exist on the surface of the strip steel products frequently under the influence of factors such as incoming material quality, production equipment, rolling process parameters and the like, and the defects directly influence the quality evaluation of the final strip steel products. Because the rolling process of the strip steel is continuous, the defects can be found only in a quality inspection link after the rolling process is finished, the production process can not be adjusted at the moment, and particularly, when some major defects occur, the whole batch of strip steel products can be scrapped. Therefore, how to obtain the equipment running state and the rolling process parameters at the defect occurrence moment in the strip steel rolling process is a technical problem in the prior sheet cold rolling process.
In the current industrial production, especially for the steel industry, the automation and informatization technology has been widely and mature applied. In most application scenes, an operator can utilize the PLC control equipment and collected production parameter data to display the data on an industrial control computer or a DCS (distributed control system), so that the real-time parameter condition in the production process is known. The information system can send the data of automated production to the remote system server or high in the clouds and store and analysis process, and this kind of mode of utilizing industrial internet or information system to save production data can help the user to look over real-time or date data anytime and anywhere to can look over and analyze at a plurality of data, a plurality of dimensions, thereby realize optimizing production flow, improving production efficiency, reduction purposes such as production energy consumption.
However, although the existing informatization system can realize long-time storage of production data and more complicated result analysis and display for the sheet cold rolling mill, the data storage and display mode based on the time sequence database or the relational database cannot perfectly match with the quality data of the steel plate after production and analyze the surface defects of the steel plate after production.
In summary, how to provide an on-line monitoring and defect analysis system and a corresponding monitoring and analysis method thereof, which are particularly directed to a sheet cold rolling mill, on the basis of the prior art, find problems in the rolling process of strip steel and analyze possible causes of defects, overcome many defects in the prior art, and become a problem to be solved by technical personnel in the field.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the present invention provides an on-line monitoring and defect analyzing system for a sheet cold rolling mill and a corresponding monitoring and analyzing method thereof, which are as follows.
A sheet cold rolling mill monitoring and analyzing system mainly comprises a data acquisition part and an analysis storage part, wherein the data acquisition part and the analysis storage part are in one-to-one or many-to-one relationship;
the data acquisition component comprises a data acquisition unit,
the rotating speed sensor is fixedly connected to an output shaft of the motor of the sheet cold rolling mill and used for acquiring rotating speed data of the motor of the sheet cold rolling mill in real time;
the vibration sensor group consists of a plurality of vibration sensors fixedly arranged on the periphery of the working roll of the sheet cold rolling mill and is used for acquiring the vibration acceleration data of the working roll of the sheet cold rolling mill in real time;
the programmable logic controller is used for collecting production parameters in the rolling operation of the sheet cold rolling mill;
the synchronous acquisition terminal is respectively in signal connection with the rotating speed sensor, the vibration sensor group and the programmable logic controller, and is used for synchronously acquiring rotating speed data of a motor, vibration acceleration data of a working roller and production parameters and forwarding the acquired original data;
the analysis storage means may comprise a memory for storing the analysis data,
the edge calculation terminal is in signal connection with the synchronous acquisition terminal and is used for calculating and locally storing original data from the synchronous acquisition terminal, acquiring the rotating speed, the vibration data and the production parameters at each moment, calculating the rolling speed and the strip steel length at each moment, converting the vibration data and the production parameters into two-dimensional data taking the strip steel length as a horizontal coordinate, storing, displaying and uploading the two-dimensional data, and if the vibration data and the production parameters exceed a preset threshold value, generating alarm data and messages and sending the alarm data and the messages to a personnel operating computer in real time;
the system server is respectively in signal connection with the synchronous acquisition terminal and the edge computing terminal and is used for receiving the original data and the two-dimensional data from the edge computing terminal and performing cloud storage;
and the personnel operating computer is respectively in signal connection with the edge computing terminal and the system server and is used for the operators to look up and compare the original data and the two-dimensional data at any moment to complete the defect analysis of the sheet cold rolling mill.
Preferably, the rotation speed sensor, the vibration sensor group and the programmable logic controller are electrically connected with the synchronous acquisition terminal in a wired manner;
the synchronous acquisition terminal and the edge computing terminal are in signal connection in a local area network mode;
the edge computing terminal, the system server and the personnel operation computer are in signal connection in a local area network mode, and the number of the personnel operation computers in the local area network is one or more.
Preferably, said production parameters comprise at least: the thickness of the strip steel before processing, the thickness of the strip steel after processing, the tension of the strip steel before processing, the tension of the strip steel after processing, the rolling speed, the rolling force, the oil temperature of rolling and the parameters of the working roll.
A monitoring and analyzing method of a sheet cold rolling mill is based on the monitoring and analyzing system of the sheet cold rolling mill, and comprises the following steps:
s1, setting a sheet cold rolling mill monitoring and analyzing system, installing, connecting and debugging all parts in the sheet cold rolling mill monitoring and analyzing system, and executing subsequent operation after the system is set;
and S2, starting the sheet cold rolling mill to perform rolling operation, performing online monitoring on the rolling operation of the sheet cold rolling mill by using the monitoring and analyzing system of the sheet cold rolling mill, and performing defect analysis on the rolled strip steel product with defects.
Preferably, S1 specifically includes the following steps:
s11, installing and deploying a system server, and accessing the system server into a local area network in an industrial production environment;
s12, mounting a rotation speed sensor at the position of the output shaft of the motor of the sheet cold rolling mill, and mounting a plurality of vibration sensors at the periphery of the working roll of the sheet cold rolling mill;
s13, respectively connecting the rotating speed sensor, the vibration sensor and the programmable logic controller with a synchronous acquisition terminal, and accessing the synchronous acquisition terminal to a router or a network switch in the same local area network as the system server;
s14, installing and deploying an edge computing terminal, and connecting the edge computing terminal to the system server and the local area network where the synchronous acquisition terminal is located;
and S15, if only one sheet cold rolling mill needs to be monitored and analyzed, ending the process, and if a plurality of sheet cold rolling mills need to be monitored and analyzed, repeating the steps S12-S14 until the installation and the setting of the components of all the sheet cold rolling mills are completed.
Preferably, S2 specifically includes the following steps:
s21, starting and electrifying the system server and the synchronous acquisition terminal;
s22, the synchronous acquisition terminal synchronously acquires the rotating speed data of the motor, the vibration acceleration data of the working roll and the production parameters by respectively utilizing the rotating speed sensor, the vibration sensor group and the programmable logic controller;
s23, the synchronous acquisition terminal takes the acquired data as original data and respectively sends the original data to the edge computing terminal and the system server through a local area network;
s24, after receiving the original data, the edge computing terminal performs computing processing on the original data and sends a data processing result to the system server, and if the vibration data and the production parameters exceed preset thresholds, alarm data and messages are generated and sent to a personnel operation computer in real time;
and S25, an operator can access the edge computing terminal and the system server through a personnel operating computer, perform online monitoring on the edge computing terminal and the system server in the rolling operation process of the sheet cold rolling mill, and perform defect analysis on the band steel products with defects after the rolling operation process of the sheet cold rolling mill.
Preferably, the processing of the raw data in S24 specifically includes the following steps:
s241, grouping and storing original data by taking the monitored target sheet cold rolling mill, the rolling product and the rolling time as grouping bases;
s242, calculating the length of the strip steel in the time dimension according to the rotating speed of a motor of the sheet cold rolling mill, the acquisition time, the thickness of the strip steel and the diameter of a working roll of the sheet cold rolling mill, wherein the calculation formula of the length of the strip steel is as follows,
wherein the content of the first and second substances,
the length of the strip steel is shown,
the rolling speed is shown as an indication of the rolling speed,
represents an integral over time;
the calculation formula of the rolling speed is as follows,
wherein the content of the first and second substances,
the rotational speed of the motor of the sheet cold rolling mill is indicated,
showing the reduction ratio of the reduction gearbox of the main shaft,
showing the work roll diameter of the cold sheet mill.
S243, with the time dimension as a reference, converting the vibration acceleration data and the production parameters of the working roll into two-dimensional data with the strip steel length as a horizontal coordinate by combining the strip steel length;
s244, storing the converted two-dimensional data taking the length of the strip steel as the abscissa in the same group of the original data;
s245, displaying the vibration acceleration data and the production parameters of the working roll in real time in the same proportion and on the same abscissa scale in a line graph mode by taking the length of the strip steel as an abscissa;
and S246, immediately finishing the data recording and real-time display of the rolling process after the rolling process of the strip steel is finished.
Preferably, the defect analysis of the strip steel product with defects after the rolling operation of the sheet cold rolling mill in S25 includes the following steps:
s251, after the rolling process of the strip steel is finished, whether the surface of the strip steel has defects or whether the surface of the strip steel has the problem of uneven thickness is checked through a quality inspection link, and for the strip steel product with the defects, the positions of the defects on the strip steel product are recorded and the length of the strip steel product corresponding to the positions is obtained;
and S252, accessing the edge computing terminal and the system server through a personnel operating computer, searching and reading data according to the rolled product and the rolling time, checking the vibration acceleration data and the production parameters of the working rolls at the positions with the defects on the strip steel product, comparing the vibration acceleration data and the production parameters of the working rolls at other length positions of the strip steel product, and analyzing the reasons of the surface defects or the uneven thickness of the strip steel product.
Compared with the prior art, the invention has the following advantages:
the invention provides a monitoring and analyzing system of a sheet cold rolling mill, which is characterized in that a PLC is used for collecting production parameters in the rolling process of the sheet cold rolling mill, a vibration sensor is used for collecting vibration data in each rolling operation, the production parameters and the vibration data are converted into the length position of strip steel corresponding to each rolling operation through calculation, and the result is displayed and stored. By the mode of associating the production parameters and the vibration data of the sheet cold rolling mill with the length position of the strip steel, an operator can comprehensively check the parameter change condition of the strip steel production at any time in the strip steel production or after the production is finished, and particularly after the quality inspection finds that the strip steel has surface defects, the operator can compare the production parameters of the defect position with the production parameters of other normal positions, so that the possible reasons of the surface defects or the uneven thickness of the strip steel product can be conveniently and efficiently analyzed.
In the practical application process of the system, the system adopts the embedded synchronous sampling terminal to synchronously acquire the production parameters and the vibration data of the sheet cold rolling mill in the production process of the strip steel, thereby not only ensuring the accuracy of the system analysis, but also reducing the technical realization cost and facilitating the deployment and installation. Meanwhile, the system of the invention has very flexible configuration, meets diversified use requirements to the maximum extent, the system server can be simultaneously accessed into a plurality of synchronous acquisition terminals to realize monitoring and analysis on a plurality of sheet cold rolling mills, and a user can look up the historical parameter condition in any rolling operation through any computer accessed into the system to further complete comparative analysis.
In addition, the invention also provides reference basis for related technologies in the same field, and an operator can adaptively adjust and change the technical scheme of the invention to apply the technical scheme to other technical schemes related to industrial equipment online monitoring and defect analysis.
The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings for the purpose of facilitating understanding and understanding of the technical solutions of the present invention.
Drawings
FIG. 1 is a system architecture diagram of the present invention;
FIG. 2 is a schematic view showing production parameters of the present invention with the length of strip steel as the abscissa.
Detailed Description
The invention provides an on-line monitoring and defect analysis system for a sheet cold rolling mill and a corresponding monitoring and analysis method thereof.
As shown in figure 1, the monitoring and analyzing system of the sheet cold rolling mill mainly comprises a data acquisition part and an analyzing and storing part, wherein the data acquisition part and the analyzing and storing part are in one-to-one or many-to-one relationship.
Wherein the data acquisition component comprises:
and the rotating speed sensor is fixedly connected to the output shaft of the motor of the sheet cold rolling mill and used for acquiring the rotating speed data of the motor of the sheet cold rolling mill in real time so as to obtain the length of the strip steel and realize the frequency domain analysis of the vibration data.
The vibration sensor group consists of a plurality of vibration sensors fixedly arranged on the periphery of the working roll of the sheet cold rolling mill and is used for acquiring the vibration acceleration data of the working roll of the sheet cold rolling mill in real time so as to obtain the vibration impact state of the working roll.
A Programmable Logic Controller (PLC) for collecting production parameters in the rolling operation of the sheet cold rolling mill so as to analyze a process state in the rolling process;
the synchronous acquisition terminal is respectively in signal connection with the rotating speed sensor, the vibration sensor group and the programmable logic controller, and is used for synchronously acquiring rotating speed data of a motor, vibration acceleration data of a working roller and production parameters and forwarding the acquired original data; the production parameters at least comprise the thickness of the strip steel before processing, the thickness of the strip steel after processing, the tension of the strip steel before processing, the tension of the strip steel after processing, the rolling speed, the rolling force, the oil temperature of the rolling oil and the parameters of the working roll.
Wherein the analysis storage section includes:
and the edge calculation terminal is in signal connection with the synchronous acquisition terminal and is used for calculating and locally storing the original data from the synchronous acquisition terminal according to production equipment and batch information, acquiring the rotating speed, the vibration data and the production parameters at each moment, calculating the rolling speed and the strip steel length at each moment, converting the vibration data and the production parameters into two-dimensional data taking the strip steel length as a horizontal coordinate, storing, displaying and uploading the two-dimensional data, and if the vibration data and the production parameters exceed a preset threshold, generating alarm data and messages and sending the alarm data and the messages to a personnel operating computer in real time, so that an operator can conveniently check and process the alarm data and the production parameters in time.
And the system server is respectively in signal connection with the synchronous acquisition terminal and the edge computing terminal and is used for receiving the original data and the two-dimensional data from the edge computing terminal and performing cloud storage.
And the personnel operating computer is respectively in signal connection with the edge computing terminal and the system server and is used for the operators to look up and compare the original data and the two-dimensional data at any moment to complete the defect analysis of the sheet cold rolling mill.
It should be added that, in the connection relationship among the above hardware, the rotation speed sensor, the vibration sensor group and the programmable logic controller are all electrically connected to the synchronous acquisition terminal in a wired manner; the synchronous acquisition terminal and the edge computing terminal are in signal connection in a local area network mode; the edge computing terminal, the system server and the personnel operation computer are in signal connection in a local area network mode, and the number of the personnel operation computers in the local area network is one or more. In the actual application process, the acquisition of the production parameters can be completed by using other acquisition equipment, and the synchronous acquisition terminal can also be connected with the system server in a wireless network manner such as WIFI.
A method for monitoring and analyzing a cold-rolling sheet mill, based on the above-mentioned system, substantially comprising the steps of:
and S1, setting a monitoring and analyzing system of the sheet cold rolling mill, installing, connecting and debugging all the components in the monitoring and analyzing system of the sheet cold rolling mill, and executing subsequent operation after the system is set.
And S2, starting the sheet cold rolling mill to perform rolling operation, performing online monitoring on the rolling operation of the sheet cold rolling mill by using the monitoring and analyzing system of the sheet cold rolling mill, and performing defect analysis on the rolled strip steel product with defects.
Further, S1 specifically includes the following steps:
s11, installing and deploying the system server at a proper position, and accessing the system server into a local area network in the industrial production environment.
And S12, mounting a rotation speed sensor at the position of the motor output shaft of the sheet cold rolling mill, and mounting a plurality of vibration sensors at the periphery of the working roll of the sheet cold rolling mill.
And S13, connecting the rotating speed sensor, the vibration sensor and the programmable logic controller with a synchronous acquisition terminal respectively, and considering the convenience in daily setting, installing the programmable logic controller in a control room near the programmable logic controller or other convenient positions, and accessing the synchronous acquisition terminal to a router or a network switch in the same local area network as the system server.
S14, installing and deploying an edge computing terminal near the sheet cold rolling mill, and connecting the edge computing terminal to the system server and the local area network where the synchronous acquisition terminal is located, where it should be noted that the setting of the edge computing terminal depends on the actual requirement of an operator, and if the operator does not need to perform online monitoring on the entire process in the production process and does not need to check the change of production parameters in real time, this step may also be omitted.
And S15, if only one sheet cold rolling mill needs to be monitored and analyzed, ending the process, and if a plurality of sheet cold rolling mills need to be monitored and analyzed, repeating the steps S12-S14 until the installation and the setting of the components of all the sheet cold rolling mills are completed.
Further, S2 specifically includes the following steps:
and S21, after the installation and deployment of the hardware components are completed, starting and electrifying the system server and the synchronous acquisition terminal, namely acquiring the vibration state and the production parameters in the rolling process of the sheet cold rolling mill, and performing subsequent real-time online monitoring and post-production analysis.
And S22, the synchronous acquisition terminal respectively utilizes the rotating speed sensor, the vibration sensor group and the programmable logic controller to synchronously acquire the rotating speed data of the motor, the vibration acceleration data of the working roll and the production parameters.
And S23, the synchronous acquisition terminal takes the acquired data as original data and respectively sends the original data to the edge computing terminal and the system server through a local area network.
And S24, after receiving the original data, the edge computing terminal processes the original data and sends the data processing result to the system server, and if the vibration data and the production parameters exceed the preset threshold, alarm data and messages are generated and sent to a personnel operating computer in real time.
And S25, an operator can access the edge computing terminal and the system server through a personnel operating computer, perform online monitoring on the edge computing terminal and the system server in the rolling operation process of the sheet cold rolling mill, and perform defect analysis on the band steel products with defects after the rolling operation process of the sheet cold rolling mill.
Further, the processing of the raw data in S24 specifically includes the following steps:
and S241, grouping and storing the original data by taking the monitored information of the target sheet cold rolling mill, the rolled product, the rolling time and the like as grouping bases.
And S242, calculating the length of the strip steel in the time dimension according to the information such as the rotating speed of the motor of the sheet cold rolling mill, the acquisition time, the thickness of the strip steel, the diameter of the working roll of the sheet cold rolling mill and the like.
The calculation formula of the length of the strip steel is as follows,
wherein the content of the first and second substances,
the length of the strip steel is shown,
the rolling speed is shown as an indication of the rolling speed,
t represents the integral over time;
the calculation formula of the rolling speed is as follows,
wherein the content of the first and second substances,
the rotational speed of the motor of the sheet cold rolling mill is indicated,
showing the reduction ratio of the reduction gearbox of the main shaft,
showing the work roll diameter of the cold sheet mill.
And S243, converting the vibration acceleration data and the production parameters of the working roll into two-dimensional data by taking the length of the strip steel as an abscissa by taking the time dimension as reference and combining the length of the strip steel.
And S244, storing the converted two-dimensional data taking the strip steel length as the abscissa in the same group of the original data.
S245, displaying the vibration acceleration data and the production parameters of the working roll in real time in the same proportion and on the same abscissa scale in a line graph mode by taking the length of the strip steel as an abscissa, wherein a schematic diagram is shown in FIG. 2.
And S246, immediately finishing the data recording and real-time display of the rolling process after the rolling process of the strip steel is finished.
Further, the defect analysis of the strip steel product with defects after the rolling operation of the sheet cold rolling mill in S25 includes the following steps:
and S251, after the rolling process of the strip steel is finished, checking whether the surface of the strip steel has defects or whether the surface of the strip steel has the problem of uneven thickness through a quality inspection link, recording the positions of the defects on the strip steel products and acquiring the lengths of the strip steel products corresponding to the positions.
And S252, accessing the edge computing terminal and the system server through a personnel operating computer, searching and reading data according to the rolled product and the rolling time, checking the vibration acceleration data and the production parameters of the working rolls at the positions with the defects on the strip steel product, comparing the vibration acceleration data and the production parameters of the working rolls at other length positions of the strip steel product, and analyzing the reasons of the surface defects or the uneven thickness of the strip steel product.
In summary, the advantages of the present invention are embodied in the following aspects:
1. the system changes a data conversion mode based on time sequence and taking time as an abscissa in the existing system, takes the length of the strip steel as the abscissa, and associates the length position of the strip steel with the production parameters and the vibration data of the sheet cold rolling mill, so that an operator can quickly and accurately obtain the production parameters and the vibration data of the sheet cold rolling mill in the corresponding rolling operation according to the product information and the rolling time of the strip steel, and the result can be displayed through a chart taking the length of the strip steel as the abscissa, and the whole operation process and the result display are clear and visual.
2. By means of the system, an operator can comprehensively check the parameter change condition of each rolling operation at any time during or after the production of the strip steel, and particularly, after the quality inspection finds that the strip steel has surface defects, the operator can compare the production parameters of the defect positions with the production parameters of other normal positions, so that the possible reasons of the surface defects or the uneven thickness of the strip steel products can be conveniently and efficiently analyzed.
3. The system completes the acquisition of the production parameters and the vibration data of the sheet cold rolling mill in the production process of the strip steel by means of the embedded synchronous acquisition terminal, fully ensures the accuracy and the real-time performance of the data, provides guarantee for the accuracy of subsequent data analysis, reduces the setting cost of the system and provides convenience for the installation and the deployment of the system.
4. The system of the invention has flexible configuration, meets diversified use requirements to the maximum extent, the system server can be simultaneously accessed into a plurality of synchronous acquisition terminals to realize monitoring and analysis of a plurality of sheet cold rolling mills, and a user can consult the historical parameter condition of any rolling operation through a computer accessed into the system so as to complete comparative analysis.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claims.
Finally, it should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (4)
1. The sheet cold rolling mill monitoring and analyzing method based on the sheet cold rolling mill monitoring and analyzing system is characterized in that the system mainly comprises a data acquisition part and an analyzing and storing part, and the data acquisition part and the analyzing and storing part are in one-to-one or many-to-one relationship;
the data acquisition component comprises a data acquisition unit,
the rotating speed sensor is fixedly connected to an output shaft of the motor of the sheet cold rolling mill and used for acquiring rotating speed data of the motor of the sheet cold rolling mill in real time;
the vibration sensor group consists of a plurality of vibration sensors fixedly arranged on the periphery of the working roll of the sheet cold rolling mill and is used for acquiring the vibration acceleration data of the working roll of the sheet cold rolling mill in real time;
the programmable logic controller is used for collecting production parameters in the rolling operation of the sheet cold rolling mill; the production parameters include: the thickness of the strip steel before processing, the thickness of the strip steel after processing, the tension of the strip steel before processing, the tension of the strip steel after processing, the rolling speed, the rolling force, the oil temperature of rolling and the parameters of a working roll;
the synchronous acquisition terminal is respectively in signal connection with the rotating speed sensor, the vibration sensor group and the programmable logic controller, and is used for synchronously acquiring rotating speed data of a motor, vibration acceleration data of a working roller and production parameters and forwarding the acquired original data;
the analysis storage means may comprise a memory for storing the analysis data,
the edge calculation terminal is in signal connection with the synchronous acquisition terminal and is used for calculating, processing and locally storing original data from the synchronous acquisition terminal, acquiring the rotating speed data of a motor, the vibration acceleration data of the working roller and production parameters at each moment, calculating the rolling speed and the strip steel length of the working roller at each moment, converting the vibration acceleration data and the production parameters of the working roller into two-dimensional data taking the strip steel length as a horizontal coordinate for storage, display and uploading, and if the vibration acceleration data and the production parameters of the working roller exceed a preset threshold, generating alarm data and messages and sending the alarm data and the messages to a personnel operating computer in real time;
the system server is respectively in signal connection with the synchronous acquisition terminal and the edge computing terminal and is used for receiving the original data and the two-dimensional data from the edge computing terminal and performing cloud storage;
the personnel operating computer is respectively in signal connection with the edge computing terminal and the system server and is used for the operators to look up and compare the original data and the two-dimensional data at any moment to complete the defect analysis of the sheet cold rolling mill;
the method comprises the following steps:
s1, setting a sheet cold rolling mill monitoring and analyzing system, installing, connecting and debugging all parts in the sheet cold rolling mill monitoring and analyzing system, and executing subsequent operation after the system is set;
s2, starting the sheet cold rolling mill to perform rolling operation, performing online monitoring on the rolling operation of the sheet cold rolling mill by using the monitoring and analyzing system of the sheet cold rolling mill, and performing defect analysis on the rolled strip steel product with defects;
s2 specifically includes the following steps:
s21, starting and electrifying the system server and the synchronous acquisition terminal;
s22, the synchronous acquisition terminal synchronously acquires the rotating speed data of the motor, the vibration acceleration data of the working roll and the production parameters by respectively utilizing the rotating speed sensor, the vibration sensor group and the programmable logic controller;
s23, the synchronous acquisition terminal takes the acquired data as original data and respectively sends the original data to the edge computing terminal and the system server through a local area network;
s24, after receiving the original data, the edge computing terminal performs computing processing on the original data and sends a data processing result to the system server, and if the vibration acceleration data and the production parameters of the working roller exceed preset thresholds, alarm data and messages are generated and sent to a personnel operating computer in real time;
s25, an operator can access the edge computing terminal and the system server through a personnel operating computer, perform online monitoring on the edge computing terminal and the system server in the rolling operation process of the sheet cold rolling mill, and perform defect analysis on the band steel products with defects after the rolling operation process of the sheet cold rolling mill;
in S24, the calculating process of the raw data specifically includes the following steps:
s241, grouping and storing original data by taking the monitored target sheet cold rolling mill, the rolling product and the rolling time as grouping bases;
s242, calculating the length of the strip steel in the time dimension according to the rotating speed of the motor of the sheet cold rolling mill, the acquisition time and the diameter of the working roll of the sheet cold rolling mill, wherein the calculation formula of the length of the strip steel is as follows,
wherein the content of the first and second substances,
the length of the strip steel is shown,
which represents the rolling speed of the work rolls,
represents an integral over time;
the rolling speed of the work rolls is calculated by the formula,
wherein the content of the first and second substances,
the rotational speed of the motor of the sheet cold rolling mill is indicated,
showing the reduction ratio of the reduction gearbox of the main shaft,
the diameter of the working roll of the sheet cold rolling mill is shown;
s243, with the collection time dimension as a reference, converting the vibration acceleration data and the production parameters of the working roll into two-dimensional data with the strip steel length as a horizontal coordinate by combining the strip steel length;
s244, storing the converted two-dimensional data taking the length of the strip steel as the abscissa in the same group of the original data;
s245, displaying the vibration acceleration data and the production parameters of the working roll in real time in the same proportion and on the same abscissa scale in a line graph mode by taking the length of the strip steel as an abscissa;
and S246, immediately finishing the data recording and real-time display of the rolling process after the rolling process of the strip steel is finished.
2. The method for monitoring and analyzing a sheet cold rolling mill based on the system for monitoring and analyzing a sheet cold rolling mill according to claim 1, wherein the step S1 specifically comprises the steps of:
s11, installing and deploying a system server, and accessing the system server into a local area network in an industrial production environment;
s12, mounting a rotation speed sensor at the position of the output shaft of the motor of the sheet cold rolling mill, and mounting a plurality of vibration sensors at the periphery of the working roll of the sheet cold rolling mill;
s13, respectively connecting the rotating speed sensor, the plurality of vibration sensors and the programmable logic controller with a synchronous acquisition terminal, and accessing the synchronous acquisition terminal to a router or a network switch in the same local area network with the system server;
s14, installing and deploying an edge computing terminal, and connecting the edge computing terminal to the system server and the local area network where the synchronous acquisition terminal is located;
and S15, if only one sheet cold rolling mill needs to be monitored and analyzed, ending the process, and if a plurality of sheet cold rolling mills need to be monitored and analyzed, repeating the steps S12-S14 until the installation and the setting of the components of all the sheet cold rolling mills are completed.
3. The method for monitoring and analyzing the sheet cold rolling mill based on the system for monitoring and analyzing the sheet cold rolling mill according to claim 2, wherein the step of analyzing the defects of the strip steel products with the defects after the rolling operation of the sheet cold rolling mill in the step S25 comprises the following steps:
s251, after the rolling process of the strip steel is finished, checking whether the strip steel has surface defects or uneven thickness defects through a quality inspection link, recording the positions of the defects on the strip steel products and acquiring the lengths of the strip steel products corresponding to the positions of the defects on the strip steel products;
and S252, accessing the edge computing terminal and the system server through a personnel operating computer, searching and reading data according to the rolled product and the rolling time, checking the vibration acceleration data and the production parameters of the working rolls at the positions with the defects on the strip steel product, comparing the vibration acceleration data and the production parameters of the working rolls at other length positions of the strip steel product, and analyzing the reasons of the surface defects or the uneven thickness defects of the strip steel product.
4. The sheet cold rolling mill monitoring and analyzing method based on the sheet cold rolling mill monitoring and analyzing system according to claim 1, characterized in that: the rotating speed sensor, the vibration sensor group and the programmable logic controller are electrically connected with the synchronous acquisition terminal in a wired mode;
the synchronous acquisition terminal and the edge computing terminal are in signal connection in a local area network mode;
the edge computing terminal, the system server and the personnel operation computer are in signal connection in a local area network mode, and the number of the personnel operation computers in the local area network is one or more.
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| JPH045518A (en) * | 1990-04-21 | 1992-01-09 | Nippon Steel Corp | Abnormality diagnostic system for rolling facility |
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