CN111014605B - Online real-time measurement system and calculation method for width and length of casting blank - Google Patents
Online real-time measurement system and calculation method for width and length of casting blank Download PDFInfo
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- CN111014605B CN111014605B CN201911275150.2A CN201911275150A CN111014605B CN 111014605 B CN111014605 B CN 111014605B CN 201911275150 A CN201911275150 A CN 201911275150A CN 111014605 B CN111014605 B CN 111014605B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
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Abstract
The invention relates to a casting blank width and length online real-time measurement system and a calculation method, wherein the measurement system comprises a data acquisition and processing system, a casting blank roller way conveying system and a casting blank specification and size data processing system, and the data acquisition and processing system comprises a serial port-to-DP network transmission module, an analog quantity input module, a left side width gauge, a right side width gauge, a length distance gauge and an infrared thermometer; the casting blank roller way conveying system comprises a roller way frequency conversion control system, a turntable roller way driving motor and a deburring machine roller way driving motor; the calculation method is used for calculating the measured width and length of the casting blank, and compensating and calculating the width and length of the casting blank according to the temperature data of the casting blank acquired in real time to reduce the cold width and length of the casting blank at the temperature of 0 ℃. The invention can find abnormal information of the width and length data of the casting blank in time, has high monitoring precision, avoids the potential safety hazard of high-temperature damage when an operator performs measurement operation, and reduces the labor intensity of the operator.
Description
Technical Field
The application belongs to the technical field of on-line measurement of casting blank specifications, and particularly relates to a casting blank width and length on-line real-time measurement system and a calculation method.
Background
At present, the fixed-length measurement of the hot cutting machine of the slab caster needs field personnel to measure through a box ruler or a plate ruler, the measurement precision is low, potential safety hazards and health injuries are caused by hot slab blazing during manual measurement, and safety and quality accidents are easy to occur. Therefore, according to the width and length precision requirements of the casting blank and the operation characteristics of field equipment, the online real-time measurement system and method for the width and length of the casting blank are designed, the casting blank enters a measurement state at different periods by controlling a roller way system, detection information of a field instrument is collected in time, and the width and length information of the casting blank is finally processed and calculated.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an online real-time measuring system and a calculating method for the width and the length of a casting blank, the casting blank enters a measuring state at different periods by controlling a roller way system, the detection information of a field instrument can be preliminarily and timely acquired, and the width and the length information of the casting blank are finally processed and calculated.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the utility model provides an online real-time measurement system of casting blank width and length, includes data acquisition and processing system to and the casting blank roll table conveying system, the casting blank specification and size data processing system of data acquisition and processing system cooperation operation, wherein:
the data acquisition and processing system comprises a left side width gauge, a right side width gauge, a length range finder, an infrared thermometer, a serial port-to-DP network transmission module and an analog input module, wherein the serial port-to-DP network transmission module is connected with the left side width gauge, the right side width gauge and the length range finder, and the analog input module is connected with the infrared thermometer;
left side width gauge: the left side edge distance data used for measuring the head and the tail of the casting blank is used for calculating the width of the casting blank;
right side width gauge: the device is used for measuring the right side edge distance data of the head and the tail of the casting blank and calculating the width of the casting blank;
length-measuring instrument: the device is used for measuring the tail edge distance data of the casting blank and calculating the length of the casting blank;
a serial port to DP network transmission module: the CPU module is used for carrying out data communication connection on the left side width gauge, the right side width gauge and the length distance gauge and sending the received data to the PLC under 0 transmission error;
analog quantity input module: the CPU module is used for receiving the data of the infrared thermometer and forwarding the data to the PLC;
the casting blank roller way conveying system comprises a PLC data acquisition control system, a roller way frequency conversion control system connected with a DO port of the PLC data acquisition control system, a driving turntable roller way driving motor and a deburring machine roller way driving motor which are connected with the roller way frequency conversion control system, No. 1 and No. 2 continuous casting machine output roller ways for conveying casting blanks to a rolling mill roller way, and No. 3 continuous casting machine output roller ways, and the width and the length of the casting blanks are measured in real time in an online mode in the casting blank roller way conveying process. The AI port of the PLC data acquisition control system is connected with the left side width gauge, the right side width gauge and the length distance gauge through the serial port-to-DP network transmission module, the AI port of the PLC data acquisition control system is also connected with the infrared thermometer through the analog input module, and the AI port transmits data to the CPU. Wherein:
frequency converter of roller way frequency conversion control system: the device is used for controlling the speed of the roller way to be converted by the turntable roller way driving motor and the deburring machine roller way driving motor, and the head and the tail of the casting blank are enabled to run at a low speed when entering a measuring state according to the position of the tracked casting blank, so that the measuring precision of the width and the length is improved.
The casting blank specification size data processing system comprises a specification size calculation module arranged in the PLC data acquisition control system, the specification size calculation module calculates the length and the width of a casting blank according to the width and length ranging data of the data acquisition processing system and the casting blank conveying control time sequence, and performs compensation calculation on the width and the length of the casting blank according to the casting blank temperature data acquired in real time to reduce the cold width and the cold length of the casting blank at the temperature of 0 ℃. And the PLC program tracks the continuous casting machines No. 1, No. 2 and No. 3, the counted width and length measurement results are matched with the casting blank number, the synchronization of information flow and logistics is realized, and the information is uploaded to an MES three-level system for continuous casting so as to provide casting blank information for a rolling mill.
The technical scheme of the invention is further improved as follows: the left side width gauge, the right side width gauge and the length distance gauge are all laser sensors, the infrared temperature measuring instrument measures the temperature of the casting blank by adopting an infrared principle, a connecting line for installing the left side width gauge and the right side width gauge is vertical to the running direction of the casting blank, and the laser measuring height is positioned in the middle of the casting blank.
The technical scheme of the invention is further improved as follows: the measurement range of the infrared thermometer is 0-1000 ℃, preferably more than 800 ℃.
The technical scheme of the invention is further improved as follows: the model of the left side width gauge, the right side width gauge and the length distance gauge is HZH-DDJ-S, the measuring range is 0-20 meters, the precision is 1mm, the reaction time is 0.2 seconds, and 485 serial port communication is adopted to output measuring data; the model of the serial port-to-DP network transmission module is DP200, the model of a frequency converter of the roller way frequency conversion control system is 6SE70120, the model of an infrared thermometer is WGG2-201, and the model of an analog input module is 6ES7331-7KF02-0AB 0.
A method for measuring and calculating the width and length of a casting blank on line in real time utilizes the measuring system, aims to acquire data through a data acquisition and processing system, forwards the acquired data to a CPU of a PLC data acquisition and control system, converts the speed of a roller way through a roller way frequency conversion control system to enable the casting blank to enter a length and width measuring state, and then obtains the width and length numerical values of the cold casting blank through a specification and dimension calculating method of a specification and dimension calculating module in a casting blank specification and dimension data processing system.
The technical scheme of the invention is further improved as follows: the calculation method comprises the following steps:
the method comprises the following steps: the head of the casting blank enters a measuring state at a low speed, and signals of a left width gauge change;
step two: the length distance meter reads the distance LC from the tail edge of the casting blank to the length distance meter;
step three: calculating the length of the casting blank according to a casting blank thermal state length calculation formula LRT = L0-LC, wherein L0 is the distance of a perpendicular line from a left width gauge to a length distance gauge in the running direction of the casting blank;
step four: the left side width gauge reads the distance WCT1 from the left edge of the head of the casting blank to the left side width gauge; the right side width gauge reads the distance WCT2 from the right edge of the head of the casting blank to the right side width gauge;
step five: calculating the head width of the casting blank according to a casting blank head width calculation formula WT = W0-WCT 1-WCT 2, and calculating to obtain the head width of the casting blank, wherein W0 is the installation distance between the left side width gauge and the right side width gauge;
step six: the tail part of the casting blank enters a measuring state at a low speed;
step seven: the left side width gauge reads the distance WCW1 from the left edge of the tail part of the casting blank to the left side width gauge; the right side width gauge reads the distance WCW2 from the right edge of the tail part of the casting blank to the right side width gauge;
step eight: calculating to obtain the tail width of the casting blank according to a casting blank tail width calculation formula WW = W0-WCW 1-WCW 2;
step nine: and (3) calculating the thermal state width WRT = (WT + WW)/2 of the casting blank by using a calculation formula.
Step eleven: through a cold and heat compensation calculation formula, the cold state width W20= WRT (1-0.00001 XT) of the casting blank, and the cold state length L20= LRT (1-0.00001 XT)
Wherein: and T is the temperature (the range is 0-1000 ℃) of the casting blank measured by the infrared thermometer.
The technical scheme of the invention is further improved as follows: the width precision of the casting blank is within 1mm, and the length measuring precision is within 5 mm.
The technical scheme of the invention is further improved as follows: the low speed entering the measuring state is that the speed of the roller way is 3m/min, the measuring position is behind the roller way turntable, the method belongs to the staged and spaced conveying of casting blanks, and the efficiency of conveying the casting blanks by the roller way is not influenced.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the method can assist the on-line width adjustment and the continuous casting water distribution system to control the width specification of the casting blank within 5mm, provide accurate width data for a 1580 rolling line and provide guarantee for a rolling mill to produce a hot-rolled coil plate with the width precision of 0-5 mm. Meanwhile, field personnel measure through a box ruler, the measurement precision is low, potential safety hazards and health damages of hot blank blazing during manual measurement are avoided, safety is reduced, all measurement and inspection are conducted on the size of a casting blank in real time, sound and light alarm is immediately conducted on a computer when the size is out of tolerance, and quality accidents of the cutting precision of the flame cutter are avoided.
The measuring system of the invention can be used for on-line measurement and data processing, and manual measurement is not needed.
The invention has the advantages of easy realization, high efficiency and strong practicability, the measuring sensor adopts domestic equipment, the on-line data measurement of the width and the length of the casting blank is really realized, the measuring time of post personnel on the casting blank is shortened, the width and the length precision of the casting blank are improved, and after the system is on line, the on-line monitoring and data processing can be realized, the manual measurement on the casting blank is not needed any more, the working environment of the personnel is greatly improved, and the measuring effect is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the construction of a measurement system of the present invention;
the system comprises a continuous casting machine run-out roller bed 1 and 3, a rotary table roller bed 2, a continuous casting machine run- out roller bed 3, 1 and 2, a deburring machine roller bed 4, a length distance measuring instrument 5, a left side width measuring instrument 6, a right side width measuring instrument 7, a PLC data acquisition control system 8, a roller bed frequency conversion control system 9, a rotary table roller bed driving motor 10 and an infrared temperature measuring instrument 11.
FIG. 2 is a flow chart of a measurement method of the present invention;
fig. 3 is a measurement monitoring screen of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention discloses an online real-time measuring system for width and length of a casting blank, which is shown in figure 1 and comprises a data acquisition and processing system, a casting blank roller way conveying system and a casting blank specification and size data processing system, wherein the casting blank roller way conveying system and the casting blank specification and size data processing system correspond to the data acquisition and processing system, and the data acquisition and processing system comprises:
the data acquisition and processing system comprises a left side width gauge 6, a right side width gauge 7, a length distance gauge 5, an infrared thermometer 11, a serial port-to-DP network transmission module and an analog input module, wherein the serial port-to-DP network transmission module is connected with the left side width gauge 6, the right side width gauge 7 and the length distance gauge 5, and the analog input module is connected with the infrared thermometer;
left side width gauge 6: the left side edge distance data used for measuring the head and the tail of the casting blank is used for calculating the width of the casting blank;
right side width gauge 7: the device is used for measuring the right side edge distance data of the head and the tail of the casting blank and calculating the width of the casting blank;
length-measuring instrument 5: the device is used for measuring the tail edge distance data of the casting blank and calculating the length of the casting blank;
a serial port to DP network transmission module: the analog quantity input module is used for carrying out data communication connection on the left side width measuring instrument 6, the right side width measuring instrument 7 and the length measuring instrument 5 and sending the received data to the analog quantity input module;
analog quantity input module: the CPU module is used for receiving the data of the infrared thermometer and forwarding the data to the PLC;
the casting blank roller way conveying system comprises a PLC data acquisition control system 8, a roller way frequency conversion control system 9 connected with a DO port of the PLC data acquisition control system 8, a driving turntable roller way driving motor 10 and a deburring machine roller way 4 driving motor which are connected with the roller way frequency conversion control system 9, No. 1 and No. 2 continuous casting machine output roller ways 1 and No. 3 continuous casting machine output roller ways 3 which send casting blanks to a rolling mill roller way, and the width and the length of the casting blanks are measured on line in real time in the conveying process of the casting blank roller ways;
an AI port of the PLC data acquisition control system 8 is connected with the left side width gauge 6, the right side width gauge 7 and the length distance gauge 5 through a serial port-to-DP network transmission module, and the AI port of the PLC data acquisition control system 8 is also connected with the infrared thermometer 11 through an analog input module.
Frequency converter of roller way frequency conversion control system 9: the device is used for controlling the speed of the roller way to be converted by the turntable roller way driving motor and the deburring machine roller way driving motor, and the head and the tail of the casting blank are enabled to run at a low speed when entering a measuring state according to the position of the tracked casting blank, so that the measuring precision of the width and the length is improved;
the casting blank specification size data processing system comprises a specification size calculation module arranged in the PLC data acquisition control system 8, the specification size calculation module calculates the length and the width of a casting blank according to the width and length ranging data of the data acquisition processing system and the casting blank conveying control time sequence, and performs compensation calculation on the width and the length of the casting blank according to the casting blank temperature data acquired in real time to reduce the cold width and the cold length of the casting blank at the temperature of 0 ℃. And the PLC program tracks the continuous casting machines No. 1, No. 2 and No. 3, the counted width and length measurement results are matched with the casting blank number, the synchronization of information flow and logistics is realized, and the information is uploaded to an MES three-level system for continuous casting so as to provide casting blank information for a rolling mill.
The left side width gauge 6, the right side width gauge 7 and the length distance gauge 5 are all laser sensors, and the measuring range of the infrared thermometer 11 is 0-1000 ℃. The model of the left side width gauge 6, the right side width gauge 7 and the length distance gauge 5 is HZH-DDJ-S, the measuring range is 0-20 m, the precision is 1mm, the reaction time is 0.2S, and 485 serial port communication is adopted to output measuring data; the model of the serial port-to-DP network transmission module is DP200, the model of the frequency converter is 6SE70120, the model of the infrared thermometer 11 is WGG2-201, and the model of the analog input module is a PLC analog input module 6ES7331-7KF02-0AB 0.
A method for measuring and calculating the width and length of a casting blank on line in real time is disclosed, and referring to fig. 2, the measuring system is utilized, and aims to collect data through a data collecting and processing system, the collected data are forwarded to a CPU of a PLC data collecting and controlling system 8, the speed of a roller way is converted through a roller way frequency conversion controlling system 9, so that the casting blank enters a length and width measuring state, and then the width and length numerical values of the cold casting blank are obtained through a specification and dimension calculating method in a casting blank specification and dimension data processing system. And the PLC program tracks the continuous casting machines No. 1, No. 2 and No. 3, the counted width and length measurement results are matched with the casting blank number, the synchronization of information flow and logistics is realized, and the information is uploaded to an MES three-level system for continuous casting to provide casting blank information for a rolling mill. The specific process is as follows:
the method comprises the following steps: the head of the casting blank enters a measuring state at a low speed, and the signal of the left width gauge 6 changes;
step two: the length distance meter 5 reads the distance LC from the tail edge of the casting blank to the length distance meter 5;
step three: calculating the length of the casting blank according to a casting blank thermal state length calculation formula LRT = L0-LC, wherein L0 is the distance of a perpendicular line from the left width gauge 6 to the length gauge 5 in the running direction of the casting blank;
step four: the left side width gauge 6 reads the distance WCT1 from the left edge of the head of the casting blank to the left side width gauge 6; the right side width gauge 7 reads the distance WCT2 from the right edge of the head of the casting blank to the right side width gauge 7;
step five: calculating the head width of the casting blank according to a casting blank head width calculation formula WT = W0-WCT 1-WCT 2, wherein W0 is the installation distance between the left side width gauge 6 and the right side width gauge 7;
step six: the tail part of the casting blank enters a measuring state at a low speed;
step seven: the left side width gauge 6 reads the distance WCW1 from the left edge of the tail part of the casting blank to the left side width gauge 6; the right side width gauge 7 reads the distance WCW2 from the right edge of the tail part of the casting blank to the right side width gauge 7;
step eight: calculating to obtain the tail width of the casting blank according to a casting blank tail width calculation formula WW = W0-WCW 1-WCW 2;
step nine: through a calculation formula, the thermal state width WRT = (WT + WW)/2 of the casting blank;
step eleven: through a cold and heat compensation calculation formula, the cold state width W20= WRT (1-0.00001 XT) of the casting blank, and the cold state length L20= LRT (1-0.00001 XT)
Wherein: and T is the temperature (the range is 0-1000 ℃) of the casting blank measured by the infrared thermometer 11.
The width precision of the casting blank is within 1mm, the length measuring precision is within 5mm, and the low speed of the casting blank entering the measuring state is that the roller speed is 3 m/min.
When the technical scheme is realized, the method needs five parts of field test instrument installation, PLC system hardware configuration, roller control system compilation, data calculation software programming and system debugging.
1) Firstly, a left side width measuring instrument 6, a right side width measuring instrument 7 and a length distance measuring instrument 5 are all installed on the wall and are far away from a high-temperature environment, and a heat radiation prevention plate with a round hole is installed between the distance measuring instrument and a casting blank. The connecting line of the left width gauge 6 and the right width gauge 7 is vertical to the running direction of the casting blank, and the 3 laser measuring heights are positioned in the middle of the casting blank. And the left side width gauge 6, the right side width gauge 7 and the length gauge 5 are connected by signal wires and are subjected to data transmission with a CPU module of the PLC through an RS-485 port and a serial port-to-DP network transmission module.
2) And secondly, an analog input module is added in the PLC system to acquire data of the infrared thermometer 11.
3) And then a roller way control program is compiled, the turntable roller way 2 and the deburring machine roller way 4 are controlled through a frequency converter, the roller way speed for enabling the casting blank to enter a measuring state is met, and meanwhile a casting blank tracking program is compiled.
4) Compiling data calculation processing software of the casting blank specification and size data processing system, calculating the acquired data to obtain the width and length of the final casting blank, and matching the width and length to the number of the casting blank to realize synchronization and accuracy of information flow and logistics.
5) Compiling monitoring pictures, trend records and casting blank size alarm prompts, wherein the system interface is shown in figure 3.
Claims (8)
1. The utility model provides a casting blank width and online real-time measurement system of length which characterized in that: the device comprises a data acquisition and processing system, a casting blank roller way conveying system and a casting blank specification and size data processing system, wherein:
the data acquisition and processing system comprises a left side width gauge (6), a right side width gauge (7), a length distance gauge (5), an infrared thermometer (11), a serial port-to-DP network transmission module and an analog input module, wherein the serial port-to-DP network transmission module is connected with the left side width gauge (6), the right side width gauge (7) and the length distance gauge (5);
the casting blank roller way conveying system comprises a PLC data acquisition control system (8), a roller way frequency conversion control system (9) connected with a DO port of the PLC data acquisition control system (8), a turntable roller way driving motor (10) and a deburring machine roller way (4) driving motor which are connected with the roller way frequency conversion control system (9), No. 1 and No. 2 continuous casting machine output roller ways (3) and No. 3 continuous casting machine output roller ways (1) for conveying casting blanks to a rolling mill roller way, and the width and the length of the casting blanks are measured in real time in an online mode in the casting blank roller way conveying process;
an AI port of the PLC data acquisition control system (8) is connected with the left side width gauge (6), the right side width gauge (7) and the length range finder (5) through a serial port-to-DP network transmission module, and the AI port of the PLC data acquisition control system (8) is also connected with the infrared thermometer (11) through an analog input module;
the casting blank specification size data processing system comprises a specification size calculation module arranged in a PLC data acquisition control system (8), the specification size calculation module calculates the length and the width of a casting blank according to the width and length ranging data of the data acquisition processing system and the casting blank conveying control time sequence, and performs compensation calculation on the width and the length of the casting blank according to the casting blank temperature data acquired in real time to reduce the cold-state width and the cold-state length of the casting blank at the temperature of 0 ℃;
the specification size calculating method of the specification size calculating module comprises the following steps:
the method comprises the following steps: the head of the casting blank enters a measuring state at a low speed, and the signal of the left width gauge (6) changes;
step two: the length distance meter (5) reads the distance LC from the tail edge of the casting blank to the length distance meter (5);
step three: calculating the length of the casting blank according to a casting blank thermal state length calculation formula LRT = L0-LC, wherein L0 is the distance of a perpendicular line from a left width gauge (6) to a length distance gauge (5) in the running direction of the casting blank;
step four: the left side width gauge (6) reads the distance WCT1 from the left edge of the head of the casting blank to the left side width gauge (6); the right side width gauge (7) reads the distance WCT2 from the right edge of the head of the casting blank to the right side width gauge (7);
step five: calculating the head width of the casting blank according to a casting blank head width calculation formula WT = W0-WCT 1-WCT 2, wherein W0 is the installation distance between the left side width gauge (6) and the right side width gauge (7);
step six: the tail part of the casting blank enters a measuring state at a low speed;
step seven: the left side width gauge (6) reads the distance WCW1 from the left edge of the tail part of the casting blank to the left side width gauge (6); the right side width gauge (7) reads the distance WCW2 from the right edge of the tail part of the casting blank to the right side width gauge (7);
step eight: calculating to obtain the tail width of the casting blank according to a casting blank tail width calculation formula WW = W0-WCW 1-WCW 2;
step nine: through a calculation formula, the thermal state width WRT = (WT + WW)/2 of the casting blank;
step eleven: through a cold and heat compensation calculation formula, the cold state width W20= WRT x (1-0.00001 xT) of the casting blank, and the cold state length L20= LRT x (1-0.00001 xT) of the casting blank;
wherein: t is the temperature of the casting blank measured by the infrared thermometer (11), and the measuring range of T is 0-1000 ℃.
2. The online real-time measuring system for the width and the length of the casting blank according to claim 1, characterized in that: the left side width gauge (6), the right side width gauge (7) and the length distance gauge (5) are all laser sensors, the infrared thermometer (11) measures the temperature of the casting blank by adopting an infrared principle, a connecting line formed by the installation of the left side width gauge (6) and the right side width gauge (7) is vertical to the running direction of the casting blank, and the laser measurement height is positioned in the middle of the casting blank.
3. The online real-time measuring system for the width and the length of the casting blank according to claim 2, characterized in that: the model of the left side width gauge (6), the right side width gauge (7) and the length distance gauge (5) is HZH-DDJ-S, the measurement range is 0-20 m, the precision is 1mm, the reaction time is 0.2S, and 485 serial port communication is adopted to output measurement data; the model of the serial port-to-DP network transmission module is DP200, the model of a frequency converter of the roller way frequency conversion control system (9) is 6SE70120, the model of the infrared thermometer (11) is WGG2-201, and the model of the analog input module is 6ES7331-7KF02-0AB 0.
4. A method for measuring and calculating the width and length of a casting blank on line in real time adopts an on-line real-time measuring system for the width and length of the casting blank, wherein the on-line real-time measuring system for the width and length of the casting blank comprises a data acquisition and processing system, a casting blank roller conveying system and a casting blank specification and size data processing system, wherein:
the data acquisition and processing system comprises a left side width gauge (6), a right side width gauge (7), a length distance gauge (5), an infrared thermometer (11), a serial port-to-DP network transmission module and an analog input module, wherein the serial port-to-DP network transmission module is connected with the left side width gauge (6), the right side width gauge (7) and the length distance gauge (5);
the casting blank roller way conveying system comprises a PLC data acquisition control system (8), a roller way frequency conversion control system (9) connected with a DO port of the PLC data acquisition control system (8), a turntable roller way driving motor (10) and a deburring machine roller way (4) driving motor which are connected with the roller way frequency conversion control system (9), No. 1 and No. 2 continuous casting machine output roller ways (3) and No. 3 continuous casting machine output roller ways (1) for conveying casting blanks to a rolling mill roller way, and the width and the length of the casting blanks are measured in real time in an online mode in the casting blank roller way conveying process;
an AI port of the PLC data acquisition control system (8) is connected with the left side width gauge (6), the right side width gauge (7) and the length range finder (5) through a serial port-to-DP network transmission module, and the AI port of the PLC data acquisition control system (8) is also connected with the infrared thermometer (11) through an analog input module;
the casting blank specification size data processing system comprises a specification size calculation module arranged in a PLC data acquisition control system (8), the specification size calculation module calculates the length and the width of a casting blank according to the width and length ranging data of the data acquisition processing system and the casting blank conveying control time sequence, and performs compensation calculation on the width and the length of the casting blank according to the casting blank temperature data acquired in real time to reduce the cold-state width and the cold-state length of the casting blank at the temperature of 0 ℃;
the method aims to acquire data through a data acquisition and processing system, the acquired data are forwarded to a PLC (programmable logic controller) data acquisition and control system (8), the roller speed of a casting blank roller conveying system is converted through a roller frequency conversion control system (9), so that a casting blank enters a length and width measurement state, and then the width and length numerical values of the cold casting blank are obtained through a specification and size calculation method of a specification and size calculation module in a casting blank specification and size data processing system;
the specification and dimension calculation method comprises the following steps:
the method comprises the following steps: the head of the casting blank enters a measuring state at a low speed, and the signal of the left width gauge (6) changes;
step two: the length distance meter (5) reads the distance LC from the tail edge of the casting blank to the length distance meter (5);
step three: calculating the length of the casting blank according to a casting blank thermal state length calculation formula LRT = L0-LC, wherein L0 is the distance of a perpendicular line from a left width gauge (6) to a length distance gauge (5) in the running direction of the casting blank;
step four: the left side width gauge (6) reads the distance WCT1 from the left edge of the head of the casting blank to the left side width gauge (6); the right side width gauge (7) reads the distance WCT2 from the right edge of the head of the casting blank to the right side width gauge (7);
step five: calculating the head width of the casting blank according to a casting blank head width calculation formula WT = W0-WCT 1-WCT 2, wherein W0 is the installation distance between the left side width gauge (6) and the right side width gauge (7);
step six: the tail part of the casting blank enters a measuring state at a low speed;
step seven: the left side width gauge (6) reads the distance WCW1 from the left edge of the tail part of the casting blank to the left side width gauge (6); the right side width gauge (7) reads the distance WCW2 from the right edge of the tail part of the casting blank to the right side width gauge (7);
step eight: calculating to obtain the tail width of the casting blank according to a casting blank tail width calculation formula WW = W0-WCW 1-WCW 2;
step nine: through a calculation formula, the thermal state width WRT = (WT + WW)/2 of the casting blank;
step eleven: through a cold and heat compensation calculation formula, the cold state width W20= WRT x (1-0.00001 xT) of the casting blank, and the cold state length L20= LRT x (1-0.00001 xT) of the casting blank;
wherein: t is the temperature of the casting blank measured by the infrared thermometer (11), and the measuring range of T is 0-1000 ℃.
5. The casting blank width and length online real-time measurement and calculation method according to claim 4, characterized in that: the width precision of the casting blank is within 1mm, and the length measuring precision is within 5 mm.
6. The casting blank width and length online real-time measurement and calculation method according to claim 5, characterized in that: the low speed of the measurement state is that the roller speed is below 3 m/min.
7. The casting blank width and length online real-time measurement and calculation method according to claim 4, characterized in that: the left side width gauge (6), the right side width gauge (7) and the length distance gauge (5) are all laser sensors, the infrared thermometer (11) measures the temperature of the casting blank by adopting an infrared principle, a connecting line formed by the installation of the left side width gauge (6) and the right side width gauge (7) is vertical to the running direction of the casting blank, and the laser measurement height is positioned in the middle of the casting blank.
8. The casting blank width and length online real-time measurement and calculation method according to claim 4, characterized in that: the model of the left side width gauge (6), the right side width gauge (7) and the length distance gauge (5) is HZH-DDJ-S, the measurement range is 0-20 m, the precision is 1mm, the reaction time is 0.2S, and 485 serial port communication is adopted to output measurement data; the model of the serial port-to-DP network transmission module is DP200, the model of a frequency converter of the roller way frequency conversion control system (9) is 6SE70120, the model of the infrared thermometer (11) is WGG2-201, and the model of the analog input module is 6ES7331-7KF02-0AB 0.
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| CN113245378A (en) * | 2021-01-04 | 2021-08-13 | 河钢股份有限公司承德分公司 | Rolling monitoring method and device for continuous casting billet and terminal equipment |
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