CN103510127B - The device at molten aluminum liquid interface in real-time monitoring aluminium cell - Google Patents
The device at molten aluminum liquid interface in real-time monitoring aluminium cell Download PDFInfo
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- CN103510127B CN103510127B CN201210202724.5A CN201210202724A CN103510127B CN 103510127 B CN103510127 B CN 103510127B CN 201210202724 A CN201210202724 A CN 201210202724A CN 103510127 B CN103510127 B CN 103510127B
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- eddy current
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Abstract
The invention discloses the device at molten aluminum liquid interface in a kind of real-time monitoring aluminium cell, above motlten metal in aluminium cell, eddy current sensor (1) is installed in the position of 200～1200mm, eddy current sensor (1) is connected with liquid level controller (2), and liquid level controller (2) is connected with computer control system (3)；The frequency of the fore-lying device medium-high frequency oscillating current in liquid level controller (2) is 1.25Hz 6GHz, and this high frequency oscillating current causes in groove on eddy current sensor (1) probe by extension cable, produces the magnetic field of alternation in the coil of probe head；When fluid to be measured is near this magnetic field, then produce induced-current and the alternating magnetic field in opposite direction with head coil at this liquid surface, making the amplitude of probe head coil high-frequency electric current and phase place change, this change processes and is converted into analog/digital signal by liquid level controller (2) and is sent to host computer control system (3) and processes.
Description
Technical field
The present invention relates to the device at molten aluminum liquid interface in a kind of real-time monitoring aluminium cell, belong to aluminium cell technical field.
Background technology
In aluminium cell production process, under the effect of powerful electromagnetic force, in groove, fused electrolyte/aluminium liquid interface can produce fluctuation, rotate and distortion, the secondary response of electrolytic cell can be caused to increase, current efficiency reduces, and can affect normally producing of aluminium cell when serious.In detection aluminium cell, aluminium liquid-electrolyte interface is just particularly important, but the production environment of high temperature, highly corrosive in electrolytic cell, the sensor of major part contact all cannot work for a long time in electrolytic cell.Aluminium liquid interface when therefore not yet having good device on-line monitoring aluminium cell to produce at present.
Content of the invention
It is an object of the invention to, the device at molten aluminum liquid interface in a kind of real-time monitoring aluminium cell is provided, with overcome that prior art exists can not the production of on-line monitoring aluminium cell when the deficiency at aluminium liquid interface.
The present invention is by the following technical solutions: above the motlten metal in aluminium cell, eddy current sensor is installed in the position of 200～1200mm, and eddy current sensor is connected with liquid level controller, and liquid level controller is connected with computer control system；Eddy current sensor is arranged on the cover plate of aluminium cell, bin wall or special stand.
Multiple (two or more) eddy current sensor is installed in one aluminium cell.
The frequency of the fore-lying device medium-high frequency oscillating current in liquid level controller is 1.25Hz-6GHz, and this high frequency oscillating current causes in groove on eddy current sensor probe by extension cable, produces the magnetic field of alternation in the coil of probe head；When fluid to be measured is near this magnetic field, then produce induced-current at this liquid surface, meanwhile this current vortex field also produces a direction alternating magnetic field in opposite direction with head coil, the amplitude of probe head coil high-frequency electric current and phase place is made to change, this change is processed and is converted into analog/digital signal and is sent to host computer control system and processes by liquid level controller, or is directly transmitted to slot control machine by liquid level controller or other smart machines carry out real-time operation to electrolytic cell.
The present invention uses contactless sensor, and in utilizing groove, two kinds of melts are a kind of another kind of for nonmetallic feature, the mode of employing high-frequency electromagnetic induction, in real time the aluminium liquid interface in monitoring aluminium cell for metal.
Why the present invention uses the oscillating current of frequency 1.25Hz-6GHz as signal source, mainly considers, aluminium cell produces and uses direct current supply, and in actual production it is observed that production current perturbation 0.05 Hz only～0.2Hz.The induced field that the oscillating current of the present invention is induced is easy to separate with surrounding environment magnetic field.
Equally, the oscillating current of the present invention can only induce current vortex field and induced field in liquid metal, inoperative to nonmetallic electrolyte melt.
The present invention can monitor the situation of change at aluminium liquid interface in aluminium cell in real time, it is simple to operating personnel understand and grasp the production law of aluminium cell, carry out production operation timely, can fully improve electrolytic cell production energy-saving efficiency, have wide prospect of the application.
Brief description
Fig. 1 is eddy current sensor detection electrolytic cell aluminium liquid interfacial process schematic diagram.
Fig. 2 is installation site schematic diagram in aluminium cell for the eddy current sensor.
Detailed description of the invention
Embodiments of the invention: as shown in Figure 1 and Figure 2, above the motlten metal in aluminium cell, eddy current sensor 1 is installed in the position of 200～1200mm, and eddy current sensor 1 is connected with liquid level controller 2, and liquid level controller 2 is connected with computer control system 3；The frequency of the fore-lying device medium-high frequency oscillating current in liquid level controller 2 is 1.25Hz-6GHz, and this high frequency oscillating current causes in groove on eddy current sensor 1 probe by extension cable, produces the magnetic field of alternation in the coil of probe head；When fluid to be measured is near this magnetic field, then produce induced-current at this liquid surface, meanwhile this current vortex field also produces a direction alternating magnetic field in opposite direction with head coil, the amplitude of probe head coil high-frequency electric current and phase place is made to change, this change processes and is converted into analog/digital signal by liquid level controller 2 and is sent to host computer control system (3) and processes, or is directly transmitted to slot control machine by liquid level controller 2 or other smart machines carry out real-time operation to electrolytic cell.
Eddy current sensor 1 is arranged on the cover plate of aluminium cell, bin wall or other single special stands, gather the signal of aluminium liquid interface change nearby, multiple eddy current sensor 1 can be installed to obtain the aluminium liquid 5 interface change real time data of various piece in aluminium cell 4 in an aluminium cell.
Claims (2)
1. the device at molten aluminum liquid interface in a real-time monitoring aluminium cell, it is characterized in that: above the motlten metal in aluminium cell, eddy current sensor (1) is installed in the position of 200～1200mm, eddy current sensor (1) is connected with liquid level controller (2), and liquid level controller (2) is connected with computer control system (3)；Eddy current sensor (1) is arranged on the cover plate of aluminium cell, bin wall or special stand.
2. the device at molten aluminum liquid interface in real-time monitoring aluminium cell according to claim 1, it is characterised in that: multiple eddy current sensor (1) is installed in an aluminium cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210202724.5A CN103510127B (en) | 2012-06-19 | 2012-06-19 | The device at molten aluminum liquid interface in real-time monitoring aluminium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210202724.5A CN103510127B (en) | 2012-06-19 | 2012-06-19 | The device at molten aluminum liquid interface in real-time monitoring aluminium cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103510127A CN103510127A (en) | 2014-01-15 |
| CN103510127B true CN103510127B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210202724.5A Active CN103510127B (en) | 2012-06-19 | 2012-06-19 | The device at molten aluminum liquid interface in real-time monitoring aluminium cell |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763160B (en) * | 2016-02-02 | 2018-09-04 | 云南科威液态金属谷研发有限公司 | A kind of liquid metal oscillation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4647854A (en) * | 1983-09-09 | 1987-03-03 | Nippon Kokan Kabushiki Kaisha | Apparatus for measuring the level of the molten metal in the mold of a continuous casting machine |
| CN201728346U (en) * | 2010-01-18 | 2011-02-02 | 福建三钢闽光股份有限公司 | Variable-slag-line control device of slab continuous casting submerged nozzle |
| CN202643865U (en) * | 2012-06-19 | 2013-01-02 | 贵阳铝镁设计研究院有限公司 | Device for monitoring molten aluminum liquid interface in aluminum electrolysis cell in real time |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06258129A (en) * | 1993-03-05 | 1994-09-16 | Nisshin Steel Co Ltd | Method for measuring molten metal surface level under slag |
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2012
- 2012-06-19 CN CN201210202724.5A patent/CN103510127B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4647854A (en) * | 1983-09-09 | 1987-03-03 | Nippon Kokan Kabushiki Kaisha | Apparatus for measuring the level of the molten metal in the mold of a continuous casting machine |
| CN201728346U (en) * | 2010-01-18 | 2011-02-02 | 福建三钢闽光股份有限公司 | Variable-slag-line control device of slab continuous casting submerged nozzle |
| CN202643865U (en) * | 2012-06-19 | 2013-01-02 | 贵阳铝镁设计研究院有限公司 | Device for monitoring molten aluminum liquid interface in aluminum electrolysis cell in real time |
Non-Patent Citations (1)
| Title |
|---|
| 板坯连铸机钢水液面自动控制系统应用分析;王志强;《新疆钢铁》;20081231(第1期);第43-46页 * |
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| CN103510127A (en) | 2014-01-15 |
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