CN116237378A - Rolling force measurement system with overload measurement function - Google Patents
Rolling force measurement system with overload measurement function Download PDFInfo
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- CN116237378A CN116237378A CN202310266999.3A CN202310266999A CN116237378A CN 116237378 A CN116237378 A CN 116237378A CN 202310266999 A CN202310266999 A CN 202310266999A CN 116237378 A CN116237378 A CN 116237378A
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- rolling force
- rolling
- output signal
- force value
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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
- B21B38/08—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-force
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Abstract
The invention provides a rolling force measuring system with an overload measuring function, and relates to the technical field of rolling. The system comprises: the rolling force sensor and the secondary instrument comprise an excitation power supply, a first calculation channel, a first signal output end, a second calculation channel and a second signal output end; the excitation power supply is electrically connected with the rolling force sensor; the signal output end of the rolling force sensor is respectively connected with the first calculation channel and the second calculation channel; the first calculation channel is used for calculating a first load force value according to first calibration data acquired in advance; the second calculation channel is used for calculating a second load force value according to second calibration data acquired in advance. The system adopts the secondary instrument with two calculation channels, and respectively transmits the calibration data aiming at different rolling force ranges to the two channels, so that the secondary instrument can output normal rolling force with high precision, the secondary instrument can output overload rolling force, and the dynamic measurement range of the rolling force measurement system is improved.
Description
Technical Field
The invention relates to the technical field of rolling, in particular to a rolling force measuring system with an overload measuring function.
Background
In the steel plate rolling production process of the metallurgical industry, the rolling force of the steel plate needs to be measured on line, and the rolling force of steel rolling is larger and is generally 10-60 MN, and overload can often occur, so that a rolling force sensor (commonly called a pressure head) is adopted to acquire rolling force data. The pressure head has the characteristics of large rated force measurement value and strong overload capacity, and converts force value data into an electric signal through a matched secondary instrument to be provided for a steel rolling control system. The overload capacity of the pressure head is 5-7 times of the rated value, the pressure head can measure the force value after being calibrated according to the rated value on a force standard machine, and normally, the secondary instrument takes the rated value of the pressure head as the maximum output signal value, so that the normal production of steel rolling can be met, but after the rolling mill is overloaded, the secondary instrument cannot output an overloaded rolling force signal.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a rolling force measuring system with an overload measuring function so as to solve the problem of measuring the overload rolling force.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a rolling force measuring system with an overload measuring function, which comprises: the rolling force sensor and the secondary instrument comprise an excitation power supply, a first calculation channel, a first signal output end, a second calculation channel and a second signal output end;
the excitation power supply is electrically connected with the rolling force sensor and used for providing power for the rolling force sensor;
the signal output end of the rolling force sensor is respectively connected with the first calculation channel and the second calculation channel;
the first calculation channel is used for calculating a first load force value based on an output signal from the rolling force sensor according to first calibration data acquired in advance, converting the first load force value into a first output signal, and outputting the first output signal through a first signal output end, wherein the first calibration data are calibration data obtained under the following conditions: calibrating the characteristics of the rolling force sensor in a range from no load to a preset rated load force value on a force standard machine;
the second calculating channel is used for calculating a second load force value based on an output signal from the rolling force sensor according to second calibration data acquired in advance, converting the second load force value into a second output signal, and outputting the second output signal through a second signal output end, wherein the second calibration data are calibration data acquired under the following conditions: and calibrating the characteristics of the rolling force sensor in a range from a preset rated load force value to a preset maximum overload force value on a force standard machine.
Optionally, the first load force value ranges from 0 to a preset rated load force value, and the second load force value ranges from a preset rated load force value to a preset maximum overload force value.
Optionally, the first output signal and the second output signal are both standard meter signals of 4-20 mA in type.
Optionally, the first calculation channel and the second calculation channel are further used for amplifying the output signal from the rolling force sensor.
Optionally, for the first calculation channel, the case that the first output signal is 4mA corresponds to no load of the rolling force sensor, and the case that the first output signal is 20mA corresponds to a preset rated load force value of the rolling force sensor; for the second calculation channel, the case that the second output signal is 4mA corresponds to a preset rated load force value of the rolling force sensor, and the case that the second output signal is 20mA corresponds to a preset maximum overload force value of the rolling force sensor.
The beneficial effects of the invention include:
the rolling force measuring system with overload measuring function provided by the invention comprises: the rolling force sensor and the secondary instrument comprise an excitation power supply, a first calculation channel, a first signal output end, a second calculation channel and a second signal output end; the excitation power supply is electrically connected with the rolling force sensor and used for providing power for the rolling force sensor; the signal output end of the rolling force sensor is respectively connected with the first calculation channel and the second calculation channel; the first calculation channel is used for calculating a first load force value based on an output signal from the rolling force sensor according to first calibration data acquired in advance, converting the first load force value into a first output signal, and outputting the first output signal through a first signal output end, wherein the first calibration data are calibration data obtained under the following conditions: calibrating the characteristics of the rolling force sensor in a range from no load to a preset rated load force value on a force standard machine; the second calculating channel is used for calculating a second load force value based on an output signal from the rolling force sensor according to second calibration data acquired in advance, converting the second load force value into a second output signal, and outputting the second output signal through a second signal output end, wherein the second calibration data are calibration data acquired under the following conditions: and calibrating the characteristics of the rolling force sensor in a range from a preset rated load force value to a preset maximum overload force value on a force standard machine. The system adopts the secondary instrument with two calculation channels, and respectively transmits the calibration data calibrated for different rolling force ranges to the two calculation channels, so that the secondary instrument can output normal rolling force with high precision, the secondary instrument can output overload rolling force, and the dynamic measurement range of the rolling force measurement system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a block diagram of a rolling force measuring system with an overload measuring function according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the steel plate rolling production process of the metallurgical industry, the rolling force of the steel plate needs to be measured on line, and the rolling force of the steel plate is large and overload can often occur, so that the rolling force data is acquired by adopting a rolling force sensor (commonly called a pressure head). The pressure head converts force value data into an electric signal through a matched secondary instrument and provides the electric signal for a steel rolling control system. The overload capacity of the pressure head is 5-7 times of the rated value, the pressure head can measure the force value after being calibrated according to the rated value on a force standard machine, and normally, the secondary instrument takes the rated value of the pressure head as the maximum output signal value, so that the normal production of steel rolling can be met, but after the rolling mill is overloaded, the secondary instrument cannot output an overloaded rolling force signal. The invention provides a rolling force measuring system with an overload measuring function, aiming at the problem of a rolling force measuring system in the metallurgical industry.
Fig. 1 shows a block diagram of a rolling force measuring system with an overload measuring function according to an embodiment of the present invention. As shown in fig. 1, the rolling force measuring system with overload measuring function provided by the present invention includes: the rolling force sensor 100 and the secondary meter 101, the secondary meter 101 comprises an excitation power source 102, a first calculation channel 103, a first signal output terminal S1, a second calculation channel 104 and a second signal output terminal S2.
An excitation power source 102 is electrically connected to the roll force sensor 100 for providing power to the roll force sensor 100. Specifically, the rolling force sensor 100 has four ports, specifically including a first port P1, a second port P2, a third port P3, and a fourth port P4, for example, the first port P1 may be connected to the positive electrode of the excitation power source 102, and the second port P2 may be connected to the negative electrode of the excitation power source 102. The third port P3 may be a signal output positive electrode of the rolling force sensor 100, and the fourth port P4 may be a signal output negative electrode of the rolling force sensor 100.
The signal output ends of the rolling force sensor 100 are respectively connected with a first calculation channel 103 and a second calculation channel 104. Specifically, as shown in fig. 1, the third port P3 is connected to the input anodes of the first calculation channel 103 and the second calculation channel 104, respectively, and the fourth port P4 is connected to the input cathodes of the first calculation channel 103 and the second calculation channel 104, respectively.
The first calculating channel 103 is configured to calculate a first load force value based on an output signal from the rolling force sensor 100 according to first calibration data acquired in advance, and convert the first load force value into a first output signal, and output the first output signal via the first signal output terminal S1, where the first calibration data is calibration data obtained under the following conditions: the characteristics of the rolling force sensor 100 ranging from no load to a preset rated load force value are calibrated on a force standard machine. The second calculating channel 104 is configured to calculate a second load force value based on the output signal from the rolling force sensor 100 according to the second calibration data acquired in advance, and convert the second load force value into a second output signal, and output the second output signal via the second signal output terminal S2, where the second calibration data is calibration data acquired under the following conditions: the characteristics of the rolling force sensor 100 are calibrated on a force standard machine from a preset rated load force value to a preset maximum overload force value. Optionally, the first load force value ranges from 0 to a preset rated load force value, and the second load force value ranges from a preset rated load force value to a preset maximum overload force value.
Optionally, the first calculation channel 103 and the second calculation channel 104 are also used for amplifying the output signal from the rolling force sensor 100. Optionally, the first output signal and the second output signal are both standard meter signals of 4-20 mA in type. Specifically, for the first calculation channel 103, the case where the first output signal is 4mA corresponds to the rolling force sensor 100 being empty (i.e., the load force value is 0), and the case where the first output signal is 20mA corresponds to the preset rated load force value of the rolling force sensor 100; for the second calculation channel 104, the case where the second output signal is 4mA corresponds to a preset rated load force value of the rolling force sensor, and the case where the second output signal is 20mA corresponds to a preset maximum overload force value of the rolling force sensor.
In practical application, in the rated force value range, the rolling force sensor (pressure head) has higher detection precision and linear output, and when the rated value is more than 1 time, the pressure head cannot be damaged, but the output characteristic cannot be kept linear due to the hysteresis effect, and the output proportion becomes smaller after overload. In order to ensure that the rolling force measurement system can keep higher detection precision in a rated range and can output a force value signal in an overload state, the invention performs two calibration tests on the pressure head on a force standard machine. The first calibration is a conventional calibration method, the characteristic of the calibration pressure head from no load to rated load is calibrated, calibration data is input into a first calculation channel of a secondary instrument, and the calibration data is converted into a standard instrument signal of 4-20 mA and output; the second calibration is an overload calibration method, the pressure head is loaded from the rated load, the loading force is increased point by point until the maximum overload force value, the output data of each point of the pressure head is recorded, the characteristics of the pressure head are poor at this time, the data are nonlinear, the data are input into a second calculation channel of a secondary instrument, and after linear correction calculation, the data are converted into standard instrument signals of 4-20 mA and output. The output signals of the rolling force sensor enter a first calculation channel and a second calculation channel of the secondary instrument at the same time, the two channels amplify the output signals of the sensor at first, and the amplification factors are determined according to the calibration data of the sensor in consideration that the amplitude of the output signals of the overload of the sensor is far larger than the rated output signals and are converted into signals of standard instruments with the amplitudes of 4-20 mA for outputting. The output end of the first calculation channel outputs a force value signal of the rolling force sensor in a rated load range, 4mA corresponds to no load of the sensor, 20mA corresponds to a rated load force value of the sensor, and the channel outputs a high-precision measurement signal. The output end of the second calculation channel outputs signals in the range from rated load to maximum overload force value of the rolling force sensor, 4mA corresponds to the rated load force value of the sensor, 20mA corresponds to the maximum overload load force value of the sensor, and the channel outputs correction measurement signals.
In summary, the system adopts the secondary instrument with two calculation channels, and respectively transmits the calibration data calibrated for different rolling force ranges to the two calculation channels, so that the secondary instrument can output normal rolling force with high precision, the secondary instrument can output overload rolling force, and the dynamic measurement range of the rolling force measurement system is improved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, but not limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (5)
1. A rolling force measuring system with overload measuring function, the system comprising: the rolling force sensor and the secondary instrument comprise an excitation power supply, a first calculation channel, a first signal output end, a second calculation channel and a second signal output end;
the excitation power supply is electrically connected with the rolling force sensor and is used for providing power for the rolling force sensor;
the signal output end of the rolling force sensor is respectively connected with the first calculation channel and the second calculation channel;
the first calculating channel is used for calculating a first load force value based on an output signal from the rolling force sensor according to first calibration data acquired in advance, converting the first load force value into a first output signal, and outputting the first output signal through the first signal output end, wherein the first calibration data are calibration data obtained under the following conditions: calibrating the characteristics of the rolling force sensor in a range from no load to a preset rated load force value on a force standard machine;
the second calculating channel is configured to calculate a second load force value based on an output signal from the rolling force sensor according to second calibration data acquired in advance, and convert the second load force value into a second output signal, and output the second output signal via the second signal output end, where the second calibration data is calibration data acquired under the following conditions: and calibrating the characteristics of the rolling force sensor in a range from the preset rated load force value to a preset maximum overload force value on the force standard machine.
2. The rolling force measuring system with overload measuring function according to claim 1, wherein the first load force value ranges from 0 to the preset rated load force value, and the second load force value ranges from the preset rated load force value to the preset maximum overload force value.
3. The rolling force measuring system with overload measuring function according to claim 1, wherein the type of the first output signal and the type of the second output signal are both standard meter signals of 4-20 mA.
4. A rolling force measuring system with overload measuring function according to claim 3, characterised in that the first and the second calculation channel are also used for amplifying the output signal from the rolling force sensor.
5. A rolling force measuring system with overload measuring function according to claim 3, characterised in that for the first calculation channel, the case where the first output signal is 4mA corresponds to the rolling force sensor being empty, and the case where the first output signal is 20mA corresponds to a preset rated load force value of the rolling force sensor; for the second calculation channel, the condition that the second output signal is 4mA corresponds to a preset rated load force value of the rolling force sensor, and the condition that the second output signal is 20mA corresponds to a preset maximum overload force value of the rolling force sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310266999.3A CN116237378A (en) | 2023-03-20 | 2023-03-20 | Rolling force measurement system with overload measurement function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310266999.3A CN116237378A (en) | 2023-03-20 | 2023-03-20 | Rolling force measurement system with overload measurement function |
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| Publication Number | Publication Date |
|---|---|
| CN116237378A true CN116237378A (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310266999.3A Pending CN116237378A (en) | 2023-03-20 | 2023-03-20 | Rolling force measurement system with overload measurement function |
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| CN (1) | CN116237378A (en) |
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- 2023-03-20 CN CN202310266999.3A patent/CN116237378A/en active Pending
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