CN203508975U - Square billet continuous crystallizer liquid level detector - Google Patents
Square billet continuous crystallizer liquid level detector Download PDFInfo
- Publication number
- CN203508975U CN203508975U CN201320673265.9U CN201320673265U CN203508975U CN 203508975 U CN203508975 U CN 203508975U CN 201320673265 U CN201320673265 U CN 201320673265U CN 203508975 U CN203508975 U CN 203508975U
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- China
- Prior art keywords
- billet continuous
- square billet
- continuous casting
- casting crystallizer
- sensor
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- 239000007788 liquid Substances 0.000 title abstract description 31
- 238000009749 continuous casting Methods 0.000 claims description 38
- 230000006698 induction Effects 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 31
- 239000010959 steel Substances 0.000 abstract description 31
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000002285 radioactive effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Abstract
The utility model provides a square billet continuous crystallizer liquid level detector which comprises an eddy current sensor and a waterproof high-temperature-resistant cable connected with the sensor. The sensor is square, and the shape of the sensor is consistent with the outer square periphery of the square billet continuous crystallizer. The sensor is coaxial with the square billet continuous crystallizer. The square billet continuous crystallizer liquid level detector has the advantages that by ingenious structural design, the eddy current sensor is used to measuring the liquid level of molten steel of the square billet continuous crystallizer; the eddy current sensor can perform non-contact continuous measurement on the molten steel, and is small in size, high in flexibility, wide in frequency response, and the like; practice proves that the square billet continuous crystallizer liquid level detector is precise in system detection, good measuring effect can be achieved, and actual production needs can be satisfied.
Description
[technical field]
The utility model relates to the measuring instrument that technical field of ferrous metallurgy is used, and relates to or rather a kind of square billet continuous casting crystallizer Level meter.
[background technology]
The detection of crystallizer liquid steel level is that the height control of liquid steel level provides foundation, is also one of key technology of continuous casting machine.The measurement of liquid steel level height accurately for guaranteeing slab quality, particularly prevents the productivity ratio that is involved in, prevents bleedout, raising casting machine of non-metallic inclusion and improves the aspects such as operating condition, all playing vital effect.
Because crystallizer liquid steel level is in hot operation state, and tundish is above crystallizer when cast, the limited space of installation and measuring equipment.In such environment for use, the detection difficulty of implementing liquid steel level is very large.At present, the device that is usually used in crystallizer liquid steel level height detection has the emanant molten steel liquid level instrument of isotope, electric vortex type molten steel liquid level instrument, electromagnetic type molten steel liquid level instrument etc. several.
In the molten steel liquid level of continuous casting crystallizer for plate billet is measured, application has electric vortex type molten steel liquid level instrument and electromagnetic type molten steel liquid level instrument conventionally.
Electric vortex type tank gage is above crystallizer liquid steel level, a high frequency magnet exciting coil is installed, the high frequency magnetic field that it produces produces current vortex at liquid steel level, this generation current vortex of face produces again magnetic field, because this magnetic field is contrary with high frequency coil generation magnetic direction, so the impedance of high frequency coil is changed.The variation of coil impedance, in coil method and structure.In steel grade and temperature-resistant situation, only become monotropic function relation with liquid steel level height.As long as so detect the variation of dominant frequency coil impedance, just can convert the variation of crystallizer liquid steel level position to.
Because plate slab crystallizer cavity is cuboid, thus the sensor of electric vortex type tank gage can be placed on the left and right sides, the lower mouth of a river all can be at present this kind of metering system be still the main flow of plate slab crystallizer level gauging.
Yet the lower mouth of a river of square blank crystallizer is directly over crystallizer, and liquid level superjacent air space too limits to and cannot place sensor body, so main flow all adopts the emanant molten steel liquid level instrument of isotope at present.
The emanant molten steel liquid level instrument of isotope is processed by radioactive source detector signal and output display etc. partly forms, radioactive source is conventionally with Co 60 or two kinds of radioactive elements of Ce 137, while utilizing their rays through tested molten steel, a part is absorbed, and transmitted intensity is changed, its Changing Pattern is the increase along with liquid steel level height, can absorb field of radiation and expand, it is more that transmitted intensity weakens, and detects transmitted intensity and change the variation that goes out molten steel liquid level with regard to convertible.But, the preservation of radioactive source, especially operating personnel's security protection, these potential safety hazards are all unavoidable difficult problems.
[utility model content]
In view of this, for overcoming the above-mentioned deficiency of prior art, the utility model provides a kind of coaxial Level meter of electric vortex type that is applicable to square billet continuous casting crystallizer.
A kind of square billet continuous casting crystallizer Level meter, described square billet continuous casting crystallizer Level meter comprises eddy current sensor and the waterproof heat-resisting cable being connected with described sensor, described sensor is made as foreign side square and its profile and square billet continuous casting crystallizer and encloses and be consistent, and described sensor and described square billet continuous casting crystallizer coaxially arrange.
In at least one preferred embodiment, described sensor comprises magnet exciting coil P and induction coil S therein
1, S
2, described magnet exciting coil P and induction coil S
1, S
2be made as with described square billet continuous casting crystallizer foreign side and enclose consistent high temperature resistant coaxial square coil.。
Therein at least one preferred embodiment, described magnet exciting coil P and induction coil S
1, S
2be arranged between the jacket and inner sleeve inwall of described square billet continuous casting crystallizer.
In at least one preferred embodiment, described sensor is changed according to the size of the square billet continuous casting crystallizer detecting therein.
In at least one preferred embodiment, described sensor is air-cooled crystallizer therein.
Therein at least one preferred embodiment, described magnet exciting coil P and induction coil S
1, S
2the number of turn is identical.
In square billet continuous casting crystallizer tank gage of the present utility model, by structural design cleverly, adopt eddy current sensor square billet continuous casting crystallizer to be carried out to the measurement of molten steel liquid level, the maximum feature of eddy current sensor is to carry out contactless continuous measurement to molten steel liquid, also has the features such as volume is little, highly sensitive, frequency response is wide simultaneously.Facts have proved, square billet continuous casting crystallizer tank gage of the present utility model, system accuracy of detection, can obtain good measurement effect, reaches accuracy of detection, meets needs of production.
[accompanying drawing explanation]
Fig. 1 is the detection schematic diagram of the square billet continuous casting crystallizer Level meter of preferred embodiment of the present utility model.
Fig. 2 is the structural representation of the square billet continuous casting crystallizer Level meter of preferred embodiment of the present utility model.
[specific embodiment]
For understanding better the utility model, below with reference to accompanying drawing and instantiation, the utility model is described in detail.
Incorporated by reference to consulting Fig. 1, the schematic diagram of the square billet continuous casting crystallizer Level meter that it is preferred embodiment of the present utility model.As shown in fig. 1, in detector, comprise the winding that multiturn number is identical (magnet exciting coil P, induction coil S
1, S
2).As high frequency (50Hz) electric field E
0the primary coil P(that is added in differential induction coil is excitation coil P) when upper, changes of magnetic field produces eddy current in the molten steel of crystallizer, is subject to two secondary coil S of vortes interference
1, S
2(be induction coil S
1, S
2) generation induced potential.Induced voltage V
1, V
2via differential amplifier G
2amplify, add and rear and initial electric field E
0input feedback amplifier G
1after, can obtain linearizing output valve.This output valve changes along with the height (being the size of distance h) of Mold Steel Level.
Incorporated by reference to consulting Fig. 2, square billet continuous casting crystallizer tank gage of the present utility model is a kind of crystallizer in-built electrical eddy current type unit for detecting liquor level of molten steel, comprises eddy current sensor 10 and the waterproof heat-resisting cable (not shown) that is arranged on described crystallizer inside.Being made as of sensor 10 itself is square, and the foreign side of its profile and square billet continuous casting crystallizer 100 encloses and is consistent.Magnet exciting coil P in sensor 10, induction coil S
1, S
2all be made as respectively with the foreign side of square billet continuous casting crystallizer 100 and enclose consistent high temperature resistant coaxial square coil.High temperature resistant coaxial coil is arranged between the jacket and inner sleeve inwall of crystallizer 100, thereby can ingeniously avoid the mouth of a river 200 under the molten steel directly over crystallizer 100.Sensor 10 is sent out the result detecting after processing and can be obtained liquid level testing result by waterproof heat-resisting cable.
For safety, in above-mentioned square billet continuous casting crystallizer tank gage, sensor 10 adopts air cooling way, guarantees its precision, stability and life-span.
In above-mentioned square billet continuous casting crystallizer tank gage, sensor 10 is made as removable, when using different square blank crystallizer instead, simultaneously also by emat sensor 10 more, makes it guarantee coaxial same footpath.Because the characteristic of eddy current sensor and tested metal and contiguous crystallizer cover plate thereof and copper coin, tundish are relevant, more emat sensor, sensor all can affect its output characteristics to the variation of crystallizer horizontal level and crystallizer change width etc., therefore more will select a fixed datum after emat sensor 10 proofreaies and correct, this datum level numerical value can be memorized, as changed, automatic calibration will be controlled to automatic gain, make output characteristics get back to original value, therefore easy to use.
In square billet continuous casting crystallizer tank gage of the present utility model, adopt eddy current sensor square billet continuous casting crystallizer to be carried out to the measurement of molten steel liquid level, the maximum feature of eddy current sensor is to carry out contactless continuous measurement to molten steel liquid, also has the features such as volume is little, highly sensitive, frequency response is wide simultaneously.Facts have proved, square billet continuous casting crystallizer tank gage of the present utility model, system accuracy of detection, can obtain good measurement effect, reaches accuracy of detection, meets needs of production.
The above exemplifying embodiment has only been expressed part embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (6)
1. a square billet continuous casting crystallizer Level meter, it is characterized in that: described square billet continuous casting crystallizer Level meter comprises eddy current sensor and the waterproof heat-resisting cable being connected with described sensor, described sensor is made as foreign side square and its profile and square billet continuous casting crystallizer and encloses and be consistent, and described sensor and described square billet continuous casting crystallizer coaxially arrange.
2. square billet continuous casting crystallizer Level meter according to claim 1, is characterized in that: described sensor comprises magnet exciting coil P and induction coil S
1, S
2, described magnet exciting coil P and induction coil S
1, S
2be made as with described square billet continuous casting crystallizer foreign side and enclose consistent high temperature resistant coaxial square coil.
3. square billet continuous casting crystallizer Level meter according to claim 2, is characterized in that: described magnet exciting coil P and induction coil S
1, S
2be arranged between the jacket and inner sleeve inwall of described square billet continuous casting crystallizer.
4. square billet continuous casting crystallizer Level meter according to claim 3, is characterized in that: described sensor is changed according to the size of the square billet continuous casting crystallizer detecting.
5. square billet continuous casting crystallizer Level meter according to claim 4, is characterized in that: described sensor is air-cooled crystallizer.
6. square billet continuous casting crystallizer Level meter according to claim 5, is characterized in that: described magnet exciting coil P and induction coil S
1, S
2the number of turn is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320673265.9U CN203508975U (en) | 2013-10-29 | 2013-10-29 | Square billet continuous crystallizer liquid level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320673265.9U CN203508975U (en) | 2013-10-29 | 2013-10-29 | Square billet continuous crystallizer liquid level detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203508975U true CN203508975U (en) | 2014-04-02 |
Family
ID=50367957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320673265.9U Expired - Lifetime CN203508975U (en) | 2013-10-29 | 2013-10-29 | Square billet continuous crystallizer liquid level detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203508975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105312510A (en) * | 2014-08-01 | 2016-02-10 | 株式会社尼利可 | Eddy current mold level measuring device and mold level measuring method |
-
2013
- 2013-10-29 CN CN201320673265.9U patent/CN203508975U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312510A (en) * | 2014-08-01 | 2016-02-10 | 株式会社尼利可 | Eddy current mold level measuring device and mold level measuring method |
| CN105312510B (en) * | 2014-08-01 | 2018-09-28 | 株式会社尼利可 | Eddy current type mould level measurement device and mould level assay method |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |