CN104061979A - Double-sensor molten steel liquid level measuring equipment - Google Patents
Double-sensor molten steel liquid level measuring equipment Download PDFInfo
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- CN104061979A CN104061979A CN201410319698.3A CN201410319698A CN104061979A CN 104061979 A CN104061979 A CN 104061979A CN 201410319698 A CN201410319698 A CN 201410319698A CN 104061979 A CN104061979 A CN 104061979A
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Abstract
The invention discloses double-sensor molten steel liquid level measuring equipment. The equipment is based on non-contact type liquid level eddy type sensors, and multi-disciplinary technologies such as an electro-magnetic induction technology, a signal processing technology and a computer technology are fused. Compared with a traditional single sensor, double sensors have the advantages that a false liquid level can be well detected, and stability is great. A crystallizer is a key part in continuous casting equipment and is the heart of the continuous casting equipment. Detecting and controlling of a crystallizer liquid level are the premise of normal working of the crystallizer, the double-sensor molten steel liquid level measuring equipment has better measuring effect on a large continuous casting machine plate blank crystallizer than that of a single-sensor detecting mode, the double sensors are arranged on the two sides of a crystallizer water opening, a symmetrical liquid level collecting mode is used, influence on the liquid level from false liquid fluctuation can be well removed, the shortcomings that a traditional single sensor is small in detecting range and poor in single-point measuring stability are overcome, and the shortcoming of influence on the liquid level from electro-magnetic testing is overcome.
Description
Technical field
The present invention relates to continuous casting installation for casting, relate in particular to a kind of dual sensor liquid steel level measuring equipment.
Background technology
In general, crystallizer is the parts of most critical in continuous casting installation for casting, is also the heart of continuous casting installation for casting, and crystallizer is the prerequisite that guarantees the normal work of crystallizer to the Detection & Controling of liquid level.
At present, the liquid steel level measuring system of conticaster has a very wide range of applications at metallurgy industry.Roughly can be divided into following two classes: eddy current type liquid steel level measuring system and electromagnetic type liquid steel level measuring system.
Eddy current type liquid steel level measuring system is arranged on one end, the mouth of a river of crystallizer top, on not impact of electromagnetic agitation.What but this system adopted is the detection mode of single-sensor probe, therefore cannot eliminate the impact that false level fluctuation brings, and then cause measuring inaccurate.
Electromagnetic type liquid steel level measuring system is embedded on crystallizer, has adopted two point measurements, can effectively eliminate the impact of false liquid level.But this,, because electromagnetic agitation is the effect to molten steel by additional electromagnetic field, produces induction current in molten steel, current-carrying molten steel is subject to the effect of Lorentz force at elect magnetic field, flow state is changed, thereby controls solidifying of steel billet.Therefore electromagnetic agitation has a significant impact liquid level gauging, and system is mounted in crystallizer top and is directly connected with crystallizer, and electromagnetic agitation has considerable influence to it, and then causes measuring inaccurate shortcoming.
Summary of the invention
The present invention a kind of dual sensor liquid steel level measuring equipment is provided, to solve existing molten steel measuring equipment, measure the inaccurate technical matters of molten steel liquid level.
For solving the problems of the technologies described above, the invention provides a kind of dual sensor liquid steel level measuring equipment, comprising:
Preposition conversion equipment, comprises dual sensor; Described preposition conversion equipment is arranged on aluminium-alloy pipe inside, and described dual sensor symmetry is arranged on mold gap two ends, and is installed on one end of described aluminium-alloy pipe, and described aluminium-alloy pipe is fixed on crystallizer by Fixing clamp-seat; Wherein, described dual sensor is used for gathering liquid level signal and temperature signal; Described preposition conversion equipment is connected with dual sensor by signal wire, specifically for receiving, process and send described liquid level signal and described temperature signal;
Control device, is arranged on described aluminium-alloy pipe inner, by cable, is connected with described preposition conversion equipment; Wherein, described control device comprises signal controlling modular converter, communication management module, and described signal controlling modular converter passes liquid level signal and the temperature signal of coming for accepting and processing described preposition conversion equipment; Described communication management module passes liquid level signal and the temperature signal of coming for accepting and processing described signal controlling modular converter.
Preferably, described preposition conversion equipment also comprises signal amplifier, analog to digital converter, sampling single-chip microcomputer, first transceiver and transducer;
Described signal amplifier, is connected with dual sensor by described signal wire, specifically for described liquid level signal is carried out to signal amplification, obtains liquid level amplifying signal;
Described analog to digital converter, is connected with described signal amplifier, specifically for described liquid level amplifying signal is carried out to analog to digital conversion;
Described sampling single-chip microcomputer, be connected with described analog to digital converter, described first transceiver, specifically for receiving and process described the first analog to digital converter, pass the liquid level signal come, and then control described first transceiver and send to described transducer by processing liquid level signal later;
Described transducer, by after described processing liquid level signal conversion later, sends to described signal controlling modular converter.
Preferably, described signal controlling modular converter comprises: second transceiver, control single chip computer, the 3rd transceiver;
Described second transceiver, the figure signal sending for receiving described transducer, and described figure signal is sent to described control single chip computer;
Figure signal described in described control single chip computer reception union, and the computing signal of acquisition is sent by described the 3rd transceiver.
Preferably, described communication management module comprises the 4th transceiver, flush bonding processor, display;
Described the 4th transceiver, specifically for receiving described computing signal, and sends described flush bonding processor to;
Described flush bonding processor after computing is presented at described computing signal on described display again.
Preferably, described communication management module also comprises operation keyboard;
Described flush bonding processor can receive by described operation keyboard the operational order of user's input, and described operational order is converted to steering order, is handed down to step by step described preposition conversion equipment.
By one or more technical scheme of the present invention, the present invention has following beneficial effect or advantage:
In the present invention, provide a kind of dual sensor liquid steel level measuring equipment, use be a kind of based on contactless liquid level eddy-current transducer, be the multi-disciplinary technological incorporation such as electromagnetic induction technology, signal processing technology and computer technology.Compare with traditional single-sensor, dual sensor has the false liquid level feature of good detection, and stability is good.Crystallizer is the parts of most critical in continuous casting installation for casting, it is the heart of continuous casting installation for casting, the Detection & Controling of mould liquid level are the prerequisites that guarantees the normal work of crystallizer, dual sensor liquid steel level measuring equipment, to measuring large-scale continuous casting machine plate slab crystallizer measurement effect, be better than single-sensor detection mode, dual sensor is arranged on mold gap both sides, adopt symmetrical liquid level acquisition mode, can well eliminate the impact that false level fluctuation brings liquid level, overcome traditional single-sensor sensing range little, spot measurement poor stability shortcoming, and the shortcoming that affects liquid level brought of electromagnetic detection.
Accompanying drawing explanation
Fig. 1 is the structural drawing of dual sensor liquid steel level measuring equipment in the embodiment of the present invention;
Fig. 2 is the enforcement schematic diagram of embodiment of the present invention dual sensor liquid steel level measuring equipment.
Embodiment
In order to make the application the technical staff in the technical field more clearly understand the application, below in conjunction with accompanying drawing, by specific embodiment, present techniques scheme is described in detail.
Embodiment mono-:
In embodiments of the present invention, describe a kind of dual sensor liquid steel level measuring equipment, comprised preposition conversion equipment 1, control device 2.
Please refer to Fig. 1 below, described the structural drawing of dual sensor liquid steel level measuring equipment in the present invention.
In Fig. 1, preposition conversion equipment 1 comprises dual sensor 3, and symmetry is arranged on mold gap two ends, and is installed on one end of described aluminium-alloy pipe A; Described aluminium-alloy pipe A is fixed on crystallizer by Fixing clamp-seat.
Preposition conversion equipment 1, is arranged on described aluminium-alloy pipe A inner, and is connected with dual sensor 3 by signal wire.
Control device 2, is arranged on described aluminium-alloy pipe A inner, by cable, is connected with described preposition conversion equipment 1; Wherein, described control device 2 comprises signal controlling modular converter 4, communication management module 5.
Lower mask body is introduced the effect of all parts.
Dual sensor 3, for gathering liquid level signal and temperature signal.In actual applications, in fact dual sensor 3 comprises two sensors, is symmetricly set on mold gap two ends.
Preposition conversion equipment 1, specifically for receiving, process and send described liquid level signal and described temperature signal;
Control device 2 comprises signal controlling modular converter 4, communication management module 5; Described signal controlling modular converter 4 passes liquid level signal and the temperature signal of coming for accepting and processing described preposition conversion equipment 1; Described communication management module 5 passes liquid level signal and the temperature signal of coming for accepting and processing described signal controlling modular converter 4.
In concrete implementation process, dual sensor 3 liquid steel level measuring equipments, use be a kind of based on contactless liquid level eddy-current transducer, be the multi-disciplinary technological incorporation such as electromagnetic induction technology, signal processing technology and computer technology.Compare with traditional single-sensor, dual sensor 3 has the false liquid level feature of good detection, and stability is good.Crystallizer is the parts of most critical in continuous casting installation for casting, it is the heart of continuous casting installation for casting, the Detection & Controling of mould liquid level are the prerequisites that guarantees the normal work of crystallizer, dual sensor 3 liquid steel level measuring equipments, to measuring large-scale continuous casting machine plate slab crystallizer measurement effect, be better than single-sensor detection mode, dual sensor 3 is arranged on mold gap both sides, adopt symmetrical liquid level acquisition mode, can well eliminate the impact that false level fluctuation brings liquid level, overcome traditional single-sensor sensing range little, spot measurement poor stability shortcoming, and the shortcoming that affects liquid level brought of electromagnetic detection.
Dual sensor liquid steel level measuring equipment adopts three layer signal translative mode, please refer to Fig. 2.
In introduction below, the transceiver relating to is universal asynchronous receiving-transmitting transmitter (UniversalAsynchronous Receiver/Transmitter) specifically, and so-called UART is a kind of asynchronous receiving-transmitting transmitter.Display can be liquid crystal display.
Ground floor: preposition conversion equipment 1, integrates signals collecting and process.
Wherein, preposition conversion equipment 1 comprises dual sensor 3, signal amplifier 6, analog to digital converter 7, sampling single-chip microcomputer 8, first transceiver 9 and transducer 10.Wherein, transducer 10 I/V transducer (current/voltage converter) specifically.In addition, preposition conversion equipment 1 also comprises digital to analog converter 11.
Introduce the concrete effect of all parts below.
Dual sensor 3 is used for gathering liquid level signal and temperature signal.
Use liquid level signal to be described all parts below.In actual applications, the processing of temperature signal is similar, and the present invention is not repeating.
Described signal amplifier 6, is connected with dual sensor 3 by described signal wire, specifically for described liquid level signal is carried out to signal amplification, obtains liquid level amplifying signal;
Described analog to digital converter 7, is connected with described signal amplifier 6, specifically for described liquid level amplifying signal is carried out to analog to digital conversion;
Described sampling single-chip microcomputer 8, be connected with described analog to digital converter 7, described first transceiver 9, specifically for receiving and process described analog to digital converter 7, pass the liquid level signal of coming, and then control described first transceiver 9 and send to described transducer 10 by processing liquid level signal later;
Described transducer 10, by after described processing liquid level signal conversion later, sends to described signal controlling modular converter 4.
Generally speaking, the liquid level signal that preposition conversion equipment 1 detects sensor 0mm-150mm amplifies, by A/D, is changed and sent sampling single-chip microcomputer 8 control (UART) first transceivers 9 to export by transducer 10 through signal, 0 ℃ of-100 ℃ of temperature monitoring signal of output transducer probe, are used for and second layer swap data simultaneously.In addition, prime amplifier also can send D/A signal compensate for temperature effects value in signal amplifier 6 simultaneously.
The second layer: signal controlling modular converter 4, comprising: second transceiver 12, control single chip computer 13, the three transceivers 14; In addition, also comprise switching value I/O15 (switching value I/O), A/D converter 16, D/A converter 17.
Wherein, described second transceiver 12, the figure signal sending for receiving transducer 10, and described figure signal is sent to described control single chip computer 13;
Figure signal described in described control single chip computer 13 reception unions, and the computing signal of acquisition is sent by described the 3rd transceiver 14.
Generally speaking, liquid level after second transceiver 12 is processed ground floor and the temperature signal after processing send control single chip computer 13, by data after computing by the 3rd transceiver 14 and with the 3rd layer of swap data, the second layer send PLC (Programmable Logic Controller, programmable logic controller (PLC)) by effective liquid level electric current and temperature current.In addition, the second layer also can receive and process each switching value signal, realizes linearization process, temperature compensation auto-compensation, manual compensation, cancellation compensation, the functions such as 4=20mA electric current output.
The 3rd layer: communication management module 5 comprises the 4th transceiver 18, flush bonding processor 19, display 20.
Described the 4th transceiver 18, specifically for receiving described computing signal, and sends described flush bonding processor 19 to.
In addition, described communication management module 5 also comprises operation keyboard 21; Described flush bonding processor 19 can receive the operational order of user's input by described operation keyboard 21, and described operational order is converted to steering order, is handed down to step by step described preposition conversion equipment 1.
In actual applications, the 3rd layer also comprises: passage display 22, communicator 23.
Generally speaking, the 4th transceiver 18 will send flush bonding processor 19 with second layer swap data, and flush bonding processor 19 shows liquid level signal by data after computing, temperature signal, and passage shows, DP communication, keyboard 21 can be revised parameters and information.
In superincumbent three layers, all take High Performance SCM as core for every layer.Preposition conversion equipment 1 detects 0mm-150mm displacement small-signal by sensor to be amplified, by A/D, is changed and sent sampling single-chip microcomputer 8 control (UART) transceivers to export by transducer 10 through signal, simultaneously 0 ℃ of-100 ℃ of temperature monitoring signal of output transducer probe.
Signal controlling modular converter 4, receives and controls sensor liquid level signal, and temperature signal, and each switching value signal, realize linearization process, temperature compensation auto-compensation, manual compensation, cancellation compensation, the functions such as 4=20mA electric current output.
Communication management module 5, shows dual channel sensor liquid level, temperature signal binary channels liquid level curve, and computing curve of output, and alerting signal configure PROFIBUS-DP interface simultaneously, the communication between realization and external data.Liquid steel level new detecting method has self-checking function, automatically enters hold mode during power-off.In measurement, capable of dynamic shows measurement curve in real time, and operation keyboard can be revised system configuration, measurement parameter, consults historical data etc., is provided with binary channels measuring equipment fault and automatically switches.
By one or more embodiment of the present invention, the present invention has following beneficial effect or advantage:
In the present invention, provide a kind of dual sensor liquid steel level measuring equipment, use be a kind of based on contactless liquid level eddy-current transducer, be the multi-disciplinary technological incorporation such as electromagnetic induction technology, signal processing technology and computer technology.Compare with traditional single-sensor, dual sensor has the false liquid level feature of good detection, and stability is good.Crystallizer is the parts of most critical in continuous casting installation for casting, it is the heart of continuous casting installation for casting, the Detection & Controling of mould liquid level are the prerequisites that guarantees the normal work of crystallizer, dual sensor liquid steel level measuring equipment, to measuring large-scale continuous casting machine plate slab crystallizer measurement effect, be better than single-sensor detection mode, dual sensor is arranged on mold gap both sides, adopt symmetrical liquid level acquisition mode, can well eliminate the impact that false level fluctuation brings liquid level, overcome traditional single-sensor sensing range little, spot measurement poor stability shortcoming, and the shortcoming that affects liquid level brought of electromagnetic detection.
Although described the application's preferred embodiment, once one of ordinary skilled in the art obtains the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the application's scope.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and scope that do not depart from the application to the application.Like this, if within these of the application are revised and modification belongs to the scope of the application's claim and equivalent technologies thereof, the application is also intended to comprise these changes and modification interior.
Claims (5)
1. a dual sensor liquid steel level measuring equipment, is characterized in that, comprising:
Preposition conversion equipment, comprises dual sensor; Described preposition conversion equipment is arranged on aluminium-alloy pipe inside, and described dual sensor symmetry is arranged on mold gap two ends, and is installed on one end of described aluminium-alloy pipe, and described aluminium-alloy pipe is fixed on crystallizer by Fixing clamp-seat; Wherein, described dual sensor is used for gathering liquid level signal and temperature signal; Described preposition conversion equipment is connected with dual sensor by signal wire, specifically for receiving, process and send described liquid level signal and described temperature signal;
Control device, is arranged on described aluminium-alloy pipe inner, by cable, is connected with described preposition conversion equipment; Wherein, described control device comprises signal controlling modular converter, communication management module, and described signal controlling modular converter passes liquid level signal and the temperature signal of coming for accepting and processing described preposition conversion equipment; Described communication management module passes liquid level signal and the temperature signal of coming for accepting and processing described signal controlling modular converter.
2. measuring equipment as claimed in claim 1, is characterized in that,
Described preposition conversion equipment also comprises signal amplifier, analog to digital converter, sampling single-chip microcomputer, first transceiver and transducer;
Described signal amplifier, is connected with dual sensor by described signal wire, specifically for described liquid level signal is carried out to signal amplification, obtains liquid level amplifying signal;
Described analog to digital converter, is connected with described signal amplifier, specifically for described liquid level amplifying signal is carried out to analog to digital conversion;
Described sampling single-chip microcomputer, be connected with described analog to digital converter, described first transceiver, specifically for receiving and process described the first analog to digital converter, pass the liquid level signal come, and then control described first transceiver and send to described transducer by processing liquid level signal later;
Described transducer, by after described processing liquid level signal conversion later, sends to described signal controlling modular converter.
3. measuring equipment as claimed in claim 2, is characterized in that,
Described signal controlling modular converter comprises: second transceiver, control single chip computer, the 3rd transceiver;
Described second transceiver, the figure signal sending for receiving described transducer, and described figure signal is sent to described control single chip computer;
Figure signal described in described control single chip computer reception union, and the computing signal of acquisition is sent by described the 3rd transceiver.
4. measuring equipment as claimed in claim 3, is characterized in that,
Described communication management module comprises the 4th transceiver, flush bonding processor, display;
Described the 4th transceiver, specifically for receiving described computing signal, and sends described flush bonding processor to;
Described flush bonding processor after computing is presented at described computing signal on described display again.
5. measuring equipment as claimed in claim 3, is characterized in that, described communication management module also comprises operation keyboard;
Described flush bonding processor can receive by described operation keyboard the operational order of user's input, and described operational order is converted to steering order, is handed down to step by step described preposition conversion equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410319698.3A CN104061979A (en) | 2014-07-07 | 2014-07-07 | Double-sensor molten steel liquid level measuring equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410319698.3A CN104061979A (en) | 2014-07-07 | 2014-07-07 | Double-sensor molten steel liquid level measuring equipment |
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| CN104061979A true CN104061979A (en) | 2014-09-24 |
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| CN201410319698.3A Pending CN104061979A (en) | 2014-07-07 | 2014-07-07 | Double-sensor molten steel liquid level measuring equipment |
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Cited By (2)
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| CN105277250A (en) * | 2015-10-27 | 2016-01-27 | 武汉钢铁(集团)公司 | External protection structure of embedded molten steel liquid level sensor |
| RU2703606C2 (en) * | 2015-02-20 | 2019-10-21 | Эрголайнз Лэб С.Р.Л. | Method of measuring, system and sensor for continuous casting machine |
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Cited By (3)
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| RU2703606C2 (en) * | 2015-02-20 | 2019-10-21 | Эрголайнз Лэб С.Р.Л. | Method of measuring, system and sensor for continuous casting machine |
| CN105277250A (en) * | 2015-10-27 | 2016-01-27 | 武汉钢铁(集团)公司 | External protection structure of embedded molten steel liquid level sensor |
| CN105277250B (en) * | 2015-10-27 | 2018-03-27 | 武汉钢铁有限公司 | The outer protection structure of built-in steel water level sensor |
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Effective date of registration: 20170717 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Applicant after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Applicant before: Wuhan Iron & Steel (Group) Corp. |
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Application publication date: 20140924 |