CN103134565A - Vortex type metal liquid level detection device - Google Patents
Vortex type metal liquid level detection device Download PDFInfo
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- CN103134565A CN103134565A CN2011103949999A CN201110394999A CN103134565A CN 103134565 A CN103134565 A CN 103134565A CN 2011103949999 A CN2011103949999 A CN 2011103949999A CN 201110394999 A CN201110394999 A CN 201110394999A CN 103134565 A CN103134565 A CN 103134565A
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Abstract
The invention discloses a vortex type metal liquid level detection device which comprises a vortex transducer, a signal cable and a signal processor, wherein the vortex transducer comprises a receiving coil, an emission coil and a compensating coil, the receiving coil, the emission coil and the compensating coil are coaxially arranged along the direction from the position close to a metal liquid level to the position away from the metal liquid level in sequence, and the distance between the emission coil and the receiving coil is greater than the distance between the emission coil and the compensating coil. The vortex type metal liquid level detection device is high in sensitivity and strong in capacity of resisting disturbance.
Description
Technical field
The invention belongs to the metal liquid level detection field, be specifically related to a kind of eddy current type metal liquid level pick-up unit.
Background technology
It is the stable prerequisite of controlling metal liquid level that metal liquid level detects, the automatic control that realizes metal liquid level can make metal liquid level stably remain on predetermined height, improve the quality of strand, reducing liquid metal overflows or spills accident, improve caster work rate, alleviate casting personnel's labour intensity and avoided casting personnel fatigue or maloperation and the accident that causes.The eddy current type metal liquid level detects and to be non-contact detection, has accuracy of detection high, can than the advantage such as working under rugged environment, be usually used in the detection to metal liquid levels such as steel, aluminium and copper.The eddy current sensor coil of existing eddy current type unit for detecting liquor level of molten steel adopts the triple coil structure, CN2274105Y discloses primary coil in distance metal liquid level end farthest, two secondary coils are in the same side of primary coil and unequal apart from the spacing of primary coil, the long poor stability of its ranging is vulnerable to external interference; Primary coil, secondary coil and the compensating coil radially coaxial layout structure that CN2318619Y discloses, coefficient of mutual inductance between its primary coil and secondary coil is larger, primary coil reasons for its use signal in secondary coil is higher, and sensitivity and stability are measured in impact; CN100535613C discloses transmitting coil, receiving coil and the compensating coil of mutually nested layout, and wherein receiving coil is vertical with the axis of transmitting coil, and compensating coil is coaxial with transmitting coil.The sensor has all adopted the structure of triple coil layout, is a little less than the sensor antijamming capability but all ignored the interference that metal object especially produces sensor from sensor upper metal thing around sensor, thereby affect the accuracy of metal liquid level detection.
Therefore, be necessary to provide the strong eddy current type metal liquid level pick-up unit of a kind of highly sensitive antijamming capability to solve the deficiency of above-mentioned eddy current type metal liquid level pick-up unit.
Summary of the invention
The invention provides a kind of eddy current type metal liquid level pick-up unit, comprise: eddy current sensor, signal cable and signal processor, wherein, eddy current sensor comprises that the spacing of transmitting coil and receiving coil is greater than the spacing of transmitting coil and compensating coil apart from receiving coil, transmitting coil and the compensating coil of metal liquid level near to direction far away coaxial arrangement successively.
Further, the coiling opposite direction of receiving coil and compensating coil.
Further, the number of turns of receiving coil is greater than the number of turns of compensating coil.
Further, the number of turns ratio of the number of turns of receiving coil and compensating coil is between 1 to 10.
The invention has the beneficial effects as follows: 1. the number of turns apart from the distance of the transmitting coil distance greater than compensating coil and transmitting coil, can make transmitting coil cancel out each other at the background signal of receiving coil and compensating coil greater than the receiving coil of compensating coil and compensating coil opposite direction processed and its.2. the receiving coil that the number of turns is many apart from metal liquid level recently simultaneously apart from eddy current sensor upper metal thing farthest, the compensating coil that the number of turns is few is simultaneously nearest apart from eddy current sensor upper metal thing farthest apart from metal liquid level, on the one hand, transmitting coil is strong to the induced signal of receiving coil in the vortex flow of responding on metal liquid level and a little less than induced signal to compensating coil, and the difference of this two paths of signals has namely guaranteed greatly sensitivity that metal liquid level is detected; On the other hand, the induced signal approximately equal of the vortex flow that transmitting coil is responded on eddy current sensor upper metal thing to induced signal and the compensating coil of receiving coil, it is that eddy current sensor upper metal thing is on detecting liquid level signal almost without impact that this two paths of signals difference is approximately zero, thereby guarantee that eddy current sensor detects the stability of liquid level, has improved the antijamming capability of foreign objects.
Should be appreciated that, above generality is described and the following detailed description is all enumerated and illustrative, and purpose is for to the claimed further instruction that the invention provides.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.The below is with reference to figure, and the present invention is further detailed explanation.
Description of drawings
Accompanying drawing forms the part of this instructions, with helping further understand the present invention.
Fig. 1 shows the system diagram of eddy current type metal liquid level pick-up unit according to the preferred embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, metal liquid is injected into moulding mold 102 by long nozzle from metallurgical tank 107, and eddy current type metal liquid level pick-up unit is used for detecting in real time the metal liquid level 101 in mold 102.Eddy current type metal liquid level pick-up unit comprises eddy current sensor 103, signal cable 104 and the signal processor 105 that vertically is arranged on 101 tops, mold 102 inner metal liquid position.Eddy current sensor 103 comprises apart from receiving coil 103a, transmitting coil 103b and the compensating coil 103c of metal liquid level 101 near to direction far away coaxial arrangement successively.The spacing of transmitting coil 103b and receiving coil 103a is greater than the spacing of transmitting coil 103b and compensating coil 103c, and the number of turns of receiving coil 103a is greater than the number of turns of compensating coil 103c, and the number of turns ratio of the number of turns of receiving coil and compensating coil is between 1 to 10.The high-frequency vibration signal that signal processor 105 produces is given transmitting coil through cable 104, produces vortex flow on metal liquid level 101.The coiling opposite direction of receiving coil 103a and compensating coil 103c is cancelled out each other transmitting coil reasons for its use signal in receiving coil 103a and compensating coil 103c.The spacing of transmitting coil 103b and receiving coil 103a is greater than the spacing of transmitting coil 103b and compensating coil 103c, reduce transmitting coil 103b reasons for its use signal in receiving coil 103a, and just can offset transmitting coil 103b reasons for its use signal in the more receiving coil 103a of the number of turns with the less compensating coil 103c of the number of turns.Compare with compensating coil 103c, the number of turns of receiving coil 103a is nearer than the multiple spurs metal liquid level, the induced signal that the vortex flow that transmitting coil 103b produces in metal liquid level produces in receiving coil 103a much larger than this vortex flow at the less induced signal that produces in compensating coil 103c far away apart from metal liquid level again of the number of turns.This two-way induced signal is given signal processor 105 through cable 104 and is carried out the difference computing, provides metal liquid level to the exact value of eddy current sensor 103 distances, and the larger sensitivity of this difference is higher.except transmitting coil 103b in receiving coil 103a the reasons for its use signal, transmitting coil 103b also can produce vortex flow and form undesired signal on eddy current sensor upper metal thing 106, can produce eddy current sensor 103 as moving up and down of metallurgical tank bottom metal thing 106 and disturb, the induced signal that this vortex flow produces in the less compensating coil 103c nearer apart from eddy current sensor 103 upper metal things of the number of turns is approximately equal to the induced signal that this vortex flow produces in the number of turns receiving coil 103a far away than multiple spurs eddy current sensor upper metal thing, this two-way induced signal is also given signal processor 105 through cable 104 and is carried out the difference computing, this difference is approximately zero.Thereby, comparing with existing eddy current type metal liquid level pick-up unit, the present invention has greatly reduced eddy current sensor upper metal thing and eddy current sensor has been detected the interference of metal liquid level, has improved stability and antijamming capability.Accept ray circle 103a and compensating coil 103c and be arranged in transmitting coil 103b both sides, compare in the structure of transmitting coil one side with compensating coil with receiving coil, reduced ambient temperature and changed the interference that eddy current sensor 103 is detected metal liquid level.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. eddy current type metal liquid level pick-up unit, it is characterized in that, comprise: eddy current sensor, signal cable and signal processor, wherein, described eddy current sensor comprises that the spacing of described transmitting coil and receiving coil is greater than the spacing of transmitting coil and compensating coil apart from receiving coil, transmitting coil and the compensating coil of metal liquid level near to direction far away coaxial arrangement successively.
2. eddy current type metal liquid level pick-up unit according to claim 1, is characterized in that, the coiling opposite direction of described receiving coil and compensating coil.
3. eddy current type metal liquid level pick-up unit according to claim 2, is characterized in that, the number of turns of described receiving coil is greater than the number of turns of compensating coil.
4. eddy current type metal liquid level pick-up unit according to claim 3, is characterized in that, the number of turns ratio of the number of turns of described receiving coil and compensating coil is between 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103949999A CN103134565A (en) | 2011-12-02 | 2011-12-02 | Vortex type metal liquid level detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103949999A CN103134565A (en) | 2011-12-02 | 2011-12-02 | Vortex type metal liquid level detection device |
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| CN103134565A true CN103134565A (en) | 2013-06-05 |
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| CN2011103949999A Pending CN103134565A (en) | 2011-12-02 | 2011-12-02 | Vortex type metal liquid level detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548351A (en) * | 2016-02-22 | 2016-05-04 | 衡阳镭目科技有限责任公司 | Device for monitoring existence of liquid metal in pipeline |
| CN105628137A (en) * | 2016-02-22 | 2016-06-01 | 田志恒 | Sodium liquid level sensor and sodium liquid level detecting device |
| CN105717545A (en) * | 2016-02-22 | 2016-06-29 | 田志恒 | Device for monitoring whether liquid metal exists in pipeline |
| CN105737934A (en) * | 2016-02-22 | 2016-07-06 | 衡阳镭目科技有限责任公司 | Sodium liquid level detection device |
| CN114089208A (en) * | 2021-11-09 | 2022-02-25 | 衡阳镭目科技有限责任公司 | Method and device for detecting quality of tab |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274105Y (en) * | 1996-07-02 | 1998-02-11 | 姜虹 | Vortex-type molten-steel level detecting-controlling device |
| CN2318619Y (en) * | 1998-02-12 | 1999-05-12 | 姜虹 | Vortex metal surface position detection device |
| CN1246817A (en) * | 1997-12-08 | 2000-03-08 | 新日本制铁株式会社 | Continous casting apparatus using molten metal level gauge |
| CN200952951Y (en) * | 2006-02-23 | 2007-09-26 | 葛继凯 | Automatic measuring instrument for fluent solid material level bin level and liquid level |
| CN203351326U (en) * | 2013-07-06 | 2013-12-18 | 艾通电磁技术（昆山）有限公司 | Electromagnet |
-
2011
- 2011-12-02 CN CN2011103949999A patent/CN103134565A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274105Y (en) * | 1996-07-02 | 1998-02-11 | 姜虹 | Vortex-type molten-steel level detecting-controlling device |
| CN1246817A (en) * | 1997-12-08 | 2000-03-08 | 新日本制铁株式会社 | Continous casting apparatus using molten metal level gauge |
| CN2318619Y (en) * | 1998-02-12 | 1999-05-12 | 姜虹 | Vortex metal surface position detection device |
| CN200952951Y (en) * | 2006-02-23 | 2007-09-26 | 葛继凯 | Automatic measuring instrument for fluent solid material level bin level and liquid level |
| CN203351326U (en) * | 2013-07-06 | 2013-12-18 | 艾通电磁技术（昆山）有限公司 | Electromagnet |
Non-Patent Citations (2)
| Title |
|---|
| 杜松等: "差动涡流式连铸结晶器钢水液位仪", 《仪表技术与传感器》 * |
| 高明: "涡流式结晶器钢水液位检测及应用", 《冶金自动化》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548351A (en) * | 2016-02-22 | 2016-05-04 | 衡阳镭目科技有限责任公司 | Device for monitoring existence of liquid metal in pipeline |
| CN105628137A (en) * | 2016-02-22 | 2016-06-01 | 田志恒 | Sodium liquid level sensor and sodium liquid level detecting device |
| CN105717545A (en) * | 2016-02-22 | 2016-06-29 | 田志恒 | Device for monitoring whether liquid metal exists in pipeline |
| CN105737934A (en) * | 2016-02-22 | 2016-07-06 | 衡阳镭目科技有限责任公司 | Sodium liquid level detection device |
| CN105737934B (en) * | 2016-02-22 | 2019-02-15 | 衡阳镭目科技有限责任公司 | A kind of sodium liquid level detection device |
| CN114089208A (en) * | 2021-11-09 | 2022-02-25 | 衡阳镭目科技有限责任公司 | Method and device for detecting quality of tab |
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