CN104451183A - Intelligent control system of vacuum consumable electrical arc furnace melting speed - Google Patents
Intelligent control system of vacuum consumable electrical arc furnace melting speed Download PDFInfo
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- CN104451183A CN104451183A CN201310422186.5A CN201310422186A CN104451183A CN 104451183 A CN104451183 A CN 104451183A CN 201310422186 A CN201310422186 A CN 201310422186A CN 104451183 A CN104451183 A CN 104451183A
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- consumable electrode
- controller
- control system
- intelligent control
- arc furnace
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Abstract
The present invention discloses an intelligent control system of the vacuum consumable electrical arc furnace melting speed. The intelligent control system comprises a controller, a melting speed measurement system, a power detection unit, an electrode lifting control unit, an electrical arc current adjusting unit, a human machine interface (HMI) connected with the controller and provided for inputting parameters such as the melting speed curve, the current and the voltage, and an alarm unit connected with the controller. According to the present invention, the intelligent control system has characteristics of simple structure, easy installation layout and high intelligentization degree, and the melting speed is directly adopted as the assigned quantity to participate into the system control, such that the condition is created for the smooth system adjustment, the work can accurately control the electrode melting rate, the internal segregation of the casting ingot can be reduced, the one-time yield is improved, and the energy source consumption is reduced.
Description
Technical field
The present invention relates to electric arc furnace metallurgical industry field, especially relate to a kind of vacuum consumable electrode arc furnace and melt fast intelligent control system.
Background technology
During vacuum consumable arc-melting controls, the Combustion System of electric arc, i.e. the control of comsumable melt speed is an important step of fusion process, is the key improving ingot quality.Rational burn-off rate can reduce the internal segregation even eliminating ingot casting, improves one-pass finished rate, greatly reduces energy consumption, saves material.Therefore, accurate control electrode melting rate, is all of great significance guarantee ingot quality, save energy, safety in production and raising electric arc furnace production efficiency.
Comsumable melt speed object has the characteristic of tight coupling, non-linear and large time delay, is difficult to set up its mechanism model.Existing consumable electrode vacuum furnace usually adopts and controls the indirect opened loop control burn-off rate of flame current, and this parameter can not be embodied directly in Controlling System as given, thus accurately cannot realize the burn-off rate of needs, can only regulate fusion current by experience.Thus make one-pass finished rate lower, often need secondary or three remeltings, cause waste serious, tooling cost increases.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of vacuum consumable electrode arc furnace is provided to melt fast intelligent control system, its structure is simple, installation is laid conveniently, intelligence degree is high, work can accurate control electrode melting rate, solves the problems such as existing Control system of consumable vacuum arc furnace control accuracy is not high, one-pass finished rate is low, energy consumption is higher.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of vacuum consumable electrode arc furnace melts fast intelligent control system, it is characterized in that: comprising controller, burn-off rate measuring system, power detecting unit, Electrode control unit, flame current regulon, to connect with controller and for inputting burn-off rate curve and electric current, the HMI man-machine interface of voltage parameter and the Alarm Unit that connects with controller, described burn-off rate measuring system comprises the temperature sensor temperature on consumable electrode top being carried out to detection in real time, the hot-fluid on consumable electrode top is carried out to the heat flux sensor detected in real time, the filtering circuit connected with temperature sensor and heat flux sensor respectively, the A/D converter connected with filtering circuit, store the storer of the numerical model adopting finite element method to set up, by calling described numerical model and utilizing temperature sensor and heat flux sensor to calculate the treater of the solid-liquid interface displacement formed after fusing bottom consumable electrode in real time, described solid-liquid interface displacement signal is converted to the signaling conversion circuit that consumable electrode melts speed signal and the recording instrument without paper connected with signaling conversion circuit, described power detecting unit comprises carries out the voltage detection unit that detects in real time and current detecting unit, the Type Active Power Converter connected with voltage detection unit and current detecting unit respectively respectively to the voltage and current in the short net be serially connected between magnetic voltage regulator with consumable electrode and the current signal that Type Active Power Converter exports is converted to the I/V change-over circuit of voltage signal, described Electrode control unit comprises the frequency transformer connected with controller and the motor for carrying out elevating control to consumable electrode connected with frequency transformer, the clip blocked by consumable electrode is provided with below described battery lead rod support mechanism, be provided with electrode lifting mechanism above described battery lead rod support mechanism, described motor is connected with described electrode lifting mechanism by screw rod, described flame current regulon comprises thyristor gating circuit that the amplifying circuit that connects with controller connects with amplifying circuit and is connected to thyristor gating circuit and by regulating electrode voltage to regulate bidirectional thyristor between the magnetic voltage regulator of flame current, temperature sensor and heat flux sensor are installed in consumable electrode top, described A/D converter and storer all connect with treater, and described signaling conversion circuit connects with treater and controller respectively, and described I/V change-over circuit connects with Type Active Power Converter and controller respectively.
Above-mentioned a kind of vacuum consumable electrode arc furnace melts fast intelligent control system, it is characterized in that: described controller is programmable controller PLC.
Above-mentioned a kind of vacuum consumable electrode arc furnace melts fast intelligent control system, it is characterized in that: the quantity of described LOAD CELLS is 2.
Above-mentioned a kind of vacuum consumable electrode arc furnace melts fast intelligent control system, it is characterized in that: described Type Active Power Converter is the PWT type power transducer that MOOR company of the U.S. produces.
Above-mentioned a kind of vacuum consumable electrode arc furnace melts fast intelligent control system, it is characterized in that: described treater is the embedded microprocessor that inside is integrated with solid-liquid interface location tracking software.
Above-mentioned a kind of vacuum consumable electrode arc furnace melts fast intelligent control system, it is characterized in that: described storer is EPROM.
The present invention compared with prior art has the following advantages:
1, structure is simple, and installation is laid conveniently, input cost is low;
2, decrease the internal segregation of ingot casting, improve one-pass finished rate, reduce energy consumption;
3, burn-off rate directly participates in the control of system as specified rate, for the steady adjustment of system creates condition, to steady current and avoid the coupled relation between arc voltage and electric current to have active effect simultaneously to reduce to a certain extent lagging influence that flame current change causes molten speed change;
4, melt solid-liquid interface location of practising physiognomy by real-time follow-up consumable electrode and calculate electrode melting speed, measure convenient, calculate accurately, solve the difficult problem that electrode melting speed cannot directly be measured.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.
Description of reference numerals:
1-controller; 2-temperature sensor; 3-heat flux sensor;
4-filtering circuit; 5-A/D converter; 6-magnetic voltage regulator;
7-consumable electrode; 8-voltage detection unit; 9-current detecting unit;
10-Type Active Power Converter; 11-I/V change-over circuit; 12-frequency transformer;
13-motor; 14-amplifying circuit; 15-thyristor gating circuit;
16-bidirectional thyristor; 17-HMI man-machine interface; 18-Alarm Unit;
19-recording instrument without paper; 20-storer; 21-treater;
22-signaling conversion circuit.
Embodiment
As shown in Figure 1, the present invention includes controller 1, burn-off rate measuring system, power detecting unit, Electrode control unit, flame current regulon, to connect with controller 1 and for inputting burn-off rate curve and electric current, the HMI man-machine interface 17 of voltage parameter and the Alarm Unit 18 that connects with controller 1, described burn-off rate measuring system comprises the temperature sensor 2 temperature on consumable electrode 7 top being carried out to detection in real time, the hot-fluid on consumable electrode 7 top is carried out to the heat flux sensor 3 detected in real time, the filtering circuit 4 connected with temperature sensor 2 and heat flux sensor 3 respectively, the A/D converter 5 connected with filtering circuit 4, store the storer 20 of the numerical model adopting finite element method to set up, by calling described numerical model and utilizing temperature sensor 2 and heat flux sensor 3 to calculate the treater 21 of the solid-liquid interface displacement formed after fusing bottom consumable electrode 7 in real time, described solid-liquid interface displacement signal is converted to the signaling conversion circuit 22 that consumable electrode 7 melts speed signal and the recording instrument without paper 19 connected with signaling conversion circuit 22, described power detecting unit comprises carries out the voltage detection unit 8 that detects in real time and current detecting unit 9, the Type Active Power Converter 10 connected with voltage detection unit 8 and current detecting unit 9 respectively respectively to the voltage and current in the short net be serially connected between magnetic voltage regulator 6 with consumable electrode 7 and the current signal that Type Active Power Converter 10 exports is converted to the I/V change-over circuit 11 of voltage signal, described Electrode control unit comprises the frequency transformer 12 connected with controller 1 and the motor 13 for carrying out elevating control to consumable electrode 7 connected with frequency transformer 12, the clip blocked by consumable electrode 7 is provided with below described battery lead rod support mechanism, be provided with electrode lifting mechanism above described battery lead rod support mechanism, described motor 13 is connected with described electrode lifting mechanism by screw rod, described flame current regulon comprises thyristor gating circuit 15 that the amplifying circuit 14 that connects with controller 1 connects with amplifying circuit 14 and is connected to thyristor gating circuit 15 and by regulating electrode voltage to regulate bidirectional thyristor 16 between the magnetic voltage regulator 6 of flame current, temperature sensor 2 and heat flux sensor 3 are installed in consumable electrode 7 top, described A/D converter 5 and storer 20 all connect with treater 21, and described signaling conversion circuit 22 connects with treater 21 and controller 1 respectively, and described I/V change-over circuit 11 connects with Type Active Power Converter 10 and controller 1 respectively.
In the present embodiment, described controller 1 is programmable controller PLC.
In the present embodiment, the quantity of described LOAD CELLS 2 is 2.
In the present embodiment, described Type Active Power Converter 10 is the PWT type power transducer that MOOR company of the U.S. produces.
In the present embodiment, described treater 21 is the inner embedded microprocessor being integrated with solid-liquid interface location tracking software.
In the present embodiment, described storer 20 is EPROM.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (6)
1. vacuum consumable electrode arc furnace melts a fast intelligent control system, it is characterized in that: comprising controller (1), burn-off rate measuring system, power detecting unit, Electrode control unit, flame current regulon, to connect with controller (1) and for inputting burn-off rate curve and electric current, the HMI man-machine interface (17) of voltage parameter and the Alarm Unit (18) that connects with controller (1), described burn-off rate measuring system comprises the temperature sensor (2) temperature on consumable electrode (7) top being carried out to detection in real time, the hot-fluid on consumable electrode (7) top is carried out to the heat flux sensor (3) detected in real time, the filtering circuit (4) connected with temperature sensor (2) and heat flux sensor (3) respectively, the A/D converter (5) connected with filtering circuit (4), store the storer (20) of the numerical model adopting finite element method to set up, by calling described numerical model and utilizing temperature sensor (2) and heat flux sensor (3) to calculate the treater (21) of the rear solid-liquid interface displacement formed of consumable electrode (7) bottom fusing in real time, described solid-liquid interface displacement signal is converted to the signaling conversion circuit (22) that consumable electrode (7) melts speed signal and the recording instrument without paper (19) connected with signaling conversion circuit (22), described power detecting unit comprises carries out the voltage detection unit (8) that detects in real time and current detecting unit (9), the Type Active Power Converter (10) connected with voltage detection unit (8) and current detecting unit (9) respectively respectively to the voltage and current in the short net be serially connected between magnetic voltage regulator (6) with consumable electrode (7) and the current signal that Type Active Power Converter (10) exports is converted to the I/V change-over circuit (11) of voltage signal, described Electrode control unit comprises the frequency transformer (12) connected with controller (1) and the motor (13) for carrying out elevating control to consumable electrode (7) connected with frequency transformer (12), the clip blocked by consumable electrode (7) is provided with below described battery lead rod support mechanism, be provided with electrode lifting mechanism above described battery lead rod support mechanism, described motor (13) is connected with described electrode lifting mechanism by screw rod, described flame current regulon comprises the amplifying circuit (14) connected with controller (1), the thyristor gating circuit (15) connected with amplifying circuit (14) and is connected to thyristor gating circuit (15) and by regulating electrode voltage to regulate bidirectional thyristor (16) between the magnetic voltage regulator (6) of flame current, temperature sensor (2) and heat flux sensor (3) are installed in consumable electrode (7) top, described A/D converter (5) and storer (20) all connect with treater (21), described signaling conversion circuit (22) connects with treater (21) and controller (1) respectively, and described I/V change-over circuit (11) connects with Type Active Power Converter (10) and controller (1) respectively.
2. melt fast intelligent control system according to a kind of vacuum consumable electrode arc furnace according to claim 1, it is characterized in that: described controller (1) is programmable controller PLC.
3. melt fast intelligent control system according to a kind of vacuum consumable electrode arc furnace described in claim 1 or 2, it is characterized in that: the quantity of described LOAD CELLS (2) is 2.
4. melt fast intelligent control system according to a kind of vacuum consumable electrode arc furnace described in claim 1 or 2, it is characterized in that: the PWT type power transducer that described Type Active Power Converter (10) is produced for MOOR company of the U.S..
5. melt fast intelligent control system according to a kind of vacuum consumable electrode arc furnace described in claim 1 or 2, it is characterized in that: described treater (21) is the inner embedded microprocessor being integrated with solid-liquid interface location tracking software.
6. melt fast intelligent control system according to a kind of vacuum consumable electrode arc furnace described in claim 1 or 2, it is characterized in that: described storer (20) is EPROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310422186.5A CN104451183A (en) | 2013-09-16 | 2013-09-16 | Intelligent control system of vacuum consumable electrical arc furnace melting speed |
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| CN201310422186.5A CN104451183A (en) | 2013-09-16 | 2013-09-16 | Intelligent control system of vacuum consumable electrical arc furnace melting speed |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148722A (en) * | 2016-08-18 | 2016-11-23 | 陕西斯瑞新材料股份有限公司 | The molten drop of vacuum consumable electrode arc furnace controls device |
| CN108984918A (en) * | 2018-07-20 | 2018-12-11 | 辽宁石油化工大学 | A kind of prediction technique of electroslag remelting comsumable melt rate |
| CN111880401A (en) * | 2020-06-17 | 2020-11-03 | 上海鑫蓝海自动化科技有限公司 | Control system of vacuum consumable arc remelting furnace |
| CN114659365A (en) * | 2022-02-10 | 2022-06-24 | 江苏大学 | Novel smelting control system of vacuum consumable furnace |
-
2013
- 2013-09-16 CN CN201310422186.5A patent/CN104451183A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148722A (en) * | 2016-08-18 | 2016-11-23 | 陕西斯瑞新材料股份有限公司 | The molten drop of vacuum consumable electrode arc furnace controls device |
| CN108984918A (en) * | 2018-07-20 | 2018-12-11 | 辽宁石油化工大学 | A kind of prediction technique of electroslag remelting comsumable melt rate |
| CN108984918B (en) * | 2018-07-20 | 2023-04-18 | 辽宁石油化工大学 | Method for predicting melting rate of electroslag remelting consumable electrode |
| CN111880401A (en) * | 2020-06-17 | 2020-11-03 | 上海鑫蓝海自动化科技有限公司 | Control system of vacuum consumable arc remelting furnace |
| CN114659365A (en) * | 2022-02-10 | 2022-06-24 | 江苏大学 | Novel smelting control system of vacuum consumable furnace |
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Application publication date: 20150325 |