CN1109584A - Device for continually measuring thickness of sludge layer on molten metal - Google Patents
Device for continually measuring thickness of sludge layer on molten metal Download PDFInfo
- Publication number
- CN1109584A CN1109584A CN95101669A CN95101669A CN1109584A CN 1109584 A CN1109584 A CN 1109584A CN 95101669 A CN95101669 A CN 95101669A CN 95101669 A CN95101669 A CN 95101669A CN 1109584 A CN1109584 A CN 1109584A
- Authority
- CN
- China
- Prior art keywords
- sensor
- signal
- layer
- slag
- distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
- B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/02—Observation or illuminating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0028—Devices for monitoring the level of the melt
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
An apparatus having a sensor arrangement for determining the thickness of slag layers 2 on a metal melt 1 includes at least two sensors 5, 6, a first of which 5 is constructed as an electromagnetic sensor from which a signal can be generated giving a measure of the distance of the sensor arrangement from the metal melt 1. A signal can be generated by the second sensor 6 at a defined distance from the layer 2, the signal from the first sensor 5 being evaluated by an evaluation device at the time at which the second sensor 6 generates the signal indicating the defined distance from the layer 2.
Description
The present invention relates to a kind of by a device from the lip-deep thickness of slag layer of molten metal to the sensor device of slag blanket apparent motion that can intermittently measure.Used sensor device can join with at least one evaluation device and send corresponding characteristic signal at each layer to be measured.
The device of this common general knowledge is applied to Metal Melting.Limited by smelting technology, in the process of various blown metals, the nonmetal composition that wherein contains accumulates on the surface of metallic solution, and forms at this place and to make liquation avoid atmospheric effect and avoid the heat excessive loss, viscous or solid-state slag blanket.
In order to measure the thickness of slag layer relevant with the Metal Melting method step, different devices is disclosed:
DE 3641987 A1 disclose the device of the thickness of slag layer in a kind of definite molten metal, have used a kind of support of spear structure in this measurement mechanism.Be provided with a backdrop detector on this support, this detector and an antenna join, and this antenna obtains near the electrical network backdrop the antenna.When spear slipped in molten metal, the hum meaurement device was measured the transition of air/slag, and an induction pick-up sends signal when the interlayer that reaches between slag and the liquation.In order therefrom to obtain thickness of slag layer, resulting signal must add the continuous coverage that involves stroke, the thickness of slag layer measurement mechanism is connected with the stroke measuring device of outside, and this has damaged the dirigibility of measurement mechanism, particularly can't adopt the spear of manual mode handle structure.
Disclose a kind of device of measuring slag critical layer level height in the molten metal among DE 3832763 A1, this device building is being measured on the principle of impedance variation by an impedance circuit.Impedance circuit and an oscillator and a measuring staff or a measuring staff feed cable link to each other.The frequency of operation of oscillator is different from mains frequency.Measure impedance variation by a lock detector.When the output signal of lock detector surmount one predetermined, when attaching troops to a unit in corresponding interfacial circuit, corresponding ultimate value circuit just generates a signal.This signal indication, measuring staff are in a corresponding interfacial definite distance of distance.When using this device, also can only under the situation that involves additional, continuous stroke measurment, just can try to achieve thickness of slag layer.Except that this shortcoming of dirigibility of above-mentioned infringement measurement mechanism, this disclosed device also requires to have accurate especially speed stability, because spacing and speed are very big to the influence of measurement result.
JP-A-61212702 discloses a kind of device in order to the spear structure of measuring thickness of slag layer, and this device slips into molten metal with an electrode that is contained on the rifle head.Wherein, between the cupola well of electrode and liquation, impedance changes in air/slag zone of transition and slag/molten metal zone of transition.These impedance variation are by ultimate value circuit evaluation and must add the continuous coverage relevant with stroke again, so that therefrom obtain thickness of slag layer.
EP 0421828 A1 discloses a kind of method with continuously definite lip-deep liquid slag layer thickness of molten metal of usefulness, wherein, and with a level sensor continuous coverage that fixedly installs and the spacing of molten surface.Wherein, by an adjustable guidance device isothermal piece is fixed on the transition bed of powder/liquid slag.Wherein, guidance device needs a stroke measuring device of trying to achieve the position of isothermal piece, so that obtain thickness of slag layer from the difference of the measurement result of two measurement mechanisms.The continuous independent measurement of carrying out is in this way Duoed than the interrupted time of measuring cost and has been quickened the wearing and tearing of isothermal piece.In addition, the still need mobile device of the costliness that has stroke measuring device and isothermal piece regulating device.
The common drawback of disclosed already said apparatus or method is, measuring needs expensive mobile device and need be in order to the device that shift motion is accurately measured.Therefore, under the situation that possesses the corresponding mobile device, need be equipped with the shift motion measurement mechanism at least.
At last, JP-A-02247539 also discloses a kind of in order to measure the device of thickness of slag layer, and this device not necessarily needs a stroke measuring device.This device has a spear, is provided with a nozzle on the termination of rifle, sprays inert gas from this nozzle.Obtain the concrete speed that exists with a pressure transducer and hold up power.A little increased and suddenly raise at slag/molten metal transition position this pressure at air/slag transition position before this.Under the situation of considering concrete slag density, obtain thickness of slag layer between the two the pressure differential when entering molten metal when entering slag., this measuring principle only has feasibility to the slag of viscous.Nonetheless, speed holds up the influence that power not only is subjected to the density of slag, but also is slipped into the influence of the degree of depth, and is subjected to the influence of viscosity fluctuation, in slag blanket, all may exist this adhesive tape degree to fluctuate by liquid state until solid-state.Another shortcoming of this device is, can not accurately detect zone of transition and can not measure thin slag blanket actually.Under the situation of stroke measuring device not, the speed that slips into is wanted slow and must be kept constant because otherwise might discern do not slag tap and molten metal between transition.
Task of the present invention is that the device that a kind of this paper is begun described type improves like this, can guarantee that thickness of slag layer is measured reliably with few equipment investment, and particularly the measuring accuracy of thickness of slag layer and mobile device and shift motion are measured all irrelevant.
According to the present invention, the technical scheme that solves above task be a kind of have the feature in the characteristic of claim 1, listed, claim 1 before chat the device of the described type of part.
Under the situation of shift motion of not considering at all just need not know or translational speed, can measure the lip-deep thickness of slag layer of molten metal by sensor device of the present invention.The special reason that why can accomplish this point is that at least one sensor is the electromagnetic sensor structure, and this sensor generates a distance signal to one of layer interphase.With other sensor that when arriving one of layer, sends simple signal (as connection signal), in the moment that the connection signal notice arrives other layer distance signal is carried out evaluation by the evaluation device, can directly measure thickness.
Sensor device can comprise different or identical sensor, and these sensors have different or identical action principle.
According to a particularly advantageous form of implementation of the present invention, sensor device comprises at least two sensors, wherein, uses first sensor, and promptly electromagnetic sensor can generate a signal of determining this sensor to the concrete spacing of molten metal.Can generate a signal with slag blanket at a distance of the distance of a qualification with second sensor.When second sensor generates an expression apart from the signal of the qualification distance of slag blanket, can carry out evaluation to the signal of first sensor with the evaluation device.
At sensor device when the slag blanket, the penetrable slag blanket of sensor device.
If preferably vertically to the sensor device of molten metal apparent motion under the situation of an angle of skew to the molten metal apparent motion, then can obtain this angular error and can be in simple mode in order to signal is revised.
According to another form of implementation of the present invention, a sensor is the acceleration sensor structure, in order to can send a signal when sensor device arrives the superiors.
This form of implementation can be measured the big thickness of slag layer of glutinousness scope.
In order according to its electrical specification thinner medium to be measured, it is favourable that all sensors are the electromagnetic sensor structure.
Because device of the present invention is irrelevant with outside stroke measurment, therefore device of the present invention can be manual spear structure, so that can move towards the slag blanket direction by manually making sensor device.This structure is specially adapted to the little occasion of activity space or as indicated in the experiment with measuring, is applicable to that those are provided with the uneconomic measurement occasion of mobile device.
At last, a form of implementation of the present invention also stipulates, sensor device as a removable integral installation on spear.
By this form of implementation, can be easily a sensor device that is used to measure thickness of slag layer be changed to another kind of sensor device, so that for example other measurement project is measured or can be changed out of order sensor device simply.
Also be in and within the invention scope be, one be used to measure at least another device of measuring project and be contained in spear on or combine as a device part, that invent of protective sleeve.
Illustrated an embodiment of device of the present invention＞be in the accompanying drawings:
Fig. 1 is sensor device figure;
Fig. 2 is the signal nomograph.
Device of the present invention can 1 vertical movement of 90 ° of α angle molten metals, is coated with its thickness slag blanket to be measured 2 on the surface of molten metal 1.This device comprises the spear 3 that a part wherein only is shown among the figure, and this spear is also only illustrated protective casing 4 sealings of a part wherein among the figure.Be provided with first sensor 5 and second sensor 6 on the end segments of spear side by side, it is provided with criterion and is, the end face of these two sensors 5,6 and the end face of rifle.
As shown in Figure 2, when second sensor 6 generated expression apart from second signal of the qualification distance of slag blanket, first signal of first sensor 5 was by evaluation.Like this, can from the characteristic signal of representing slag blanket to be measured, derive the thickness of slag blanket.
If in the process of measuring signal record with store and it is carried out evaluation after finishing measuring, for the professional, other possibility that then has evaluation, these possibilities particularly also can be determined the thickness of slag layer bigger than the measurement range of first sensor.
Claims (6)
1, by a device from the lip-deep thickness of slag layer of molten metal to the sensor device of slag blanket apparent motion that can intermittently measure, used sensor device can join with at least one evaluation device and send the characteristic signal of representing each layer to be measured, it is characterized in that, at least can generate a signal with sensor device, as the distance signal between one of an electromagnetic sensor and layer interphase, wherein, in measurement range, between signal and spacing, there is a kind of clear and definite relation, and for each layer to be measured can generate another signal at least, wherein, at at least one spacing place by the extremely concrete layer to be measured of sensor device, between signal and spacing, there is a kind of clear and definite relation, and in the evaluation device, can from signal, determines the thickness of slag blanket.
2, according to the described device of claim 1, it is characterized in that, sensor device comprises at least two sensors (5,6), can generate a signal with first electromagnetic sensor (5), can determine concrete distance between first sensor (5) and the molten metal (1) by this signal, can generate a signal with second sensor (6) in the distance of a qualification of distance slag blanket (2), and when second sensor (6) generates expression apart from the signal of the qualification distance of slag blanket, the signal of first sensor (5) is carried out evaluation with the evaluation device.
According to claim 1 or 2 described devices, it is characterized in that 3, a sensor (5 or 6) is the acceleration sensor structure, can send a signal with it when sensor device arrives the superiors (2).
According to claim 1 or 2 described devices, it is characterized in that 4, all sensor devices (5,6) are the electromagnetic sensor structure.
5, according to the described device of one of claim 1 to 4, it is characterized in that, can move towards the slag blanket direction by manually making sensor device.
6, according to the described device of one of claim 1 to 5, it is characterized in that, sensor device as a removable integral installation on spear (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4402463A DE4402463C2 (en) | 1994-01-28 | 1994-01-28 | Device for discontinuous detection of the thickness of a layer on a molten metal |
| DEP4402463.0 | 1994-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1109584A true CN1109584A (en) | 1995-10-04 |
Family
ID=6508854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95101669A Pending CN1109584A (en) | 1994-01-28 | 1995-01-27 | Device for continually measuring thickness of sludge layer on molten metal |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP2854256B2 (en) |
| KR (1) | KR950032651A (en) |
| CN (1) | CN1109584A (en) |
| BE (1) | BE1010228A5 (en) |
| DE (1) | DE4402463C2 (en) |
| FR (1) | FR2715722B1 (en) |
| GB (1) | GB2286051B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666614B (en) * | 2009-10-20 | 2011-08-10 | 北京科技大学 | Device and method for measuring thickness of molten slag layer of mold flux of continuous casting crystallizer |
| CN102414543A (en) * | 2009-02-23 | 2012-04-11 | 哈茨有限公司 | Electromagnetic bath level measurement for pyrometallurgical furnaces |
| CN103080388B (en) * | 2010-08-24 | 2016-05-25 | 瓦里安半导体设备公司 | Vortex flow measurer for thickness and method |
| CN107504892A (en) * | 2017-10-13 | 2017-12-22 | 中国恩菲工程技术有限公司 | Ore-smelting electric furnace thickness of slag layer detection means and detection method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19836844C2 (en) * | 1998-08-14 | 2001-07-05 | Sms Demag Ag | Method for determining the level of the bath of an electric arc furnace |
| DE10233052A1 (en) * | 2002-07-19 | 2004-02-05 | Giesecke & Devrient Gmbh | Multiple document pull-off detection system for a document, especially banknote or check, processing system, whereby the documents are illuminated in their most sensitive areas and the transmitted radiation measured |
| DE102006003950A1 (en) | 2006-01-26 | 2007-08-30 | Heraeus Electro-Nite International N.V. | Device for determining an interface of a slag layer |
| JP5065614B2 (en) * | 2006-04-14 | 2012-11-07 | 株式会社アルバック | Eddy current film thickness meter |
| CN107401996B (en) * | 2017-09-25 | 2023-10-20 | 江苏省水利科学研究院 | Silt detecting rod |
| CN118149744A (en) * | 2024-05-13 | 2024-06-07 | 山东华韵新材料有限公司 | Metal sheet production thickness detection device |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4223552A (en) * | 1979-03-21 | 1980-09-23 | Emhart Industries, Inc. | Apparatus and method for sensing a substance on a liquid surface |
| JPS60183503A (en) * | 1984-03-02 | 1985-09-19 | Nippon Kokan Kk <Nkk> | Method for measuring thickness of molten slag |
| JPS61212702A (en) * | 1985-03-18 | 1986-09-20 | Nippon Kokan Kk <Nkk> | Slag thickness measuring method |
| SE455820B (en) * | 1985-12-09 | 1988-08-08 | Geotronics Metaltech Ab | DEVICE FOR DETECTING THE SLAUGHTER LEVEL IN A METAL BATH |
| US4849694A (en) * | 1986-10-27 | 1989-07-18 | Nanometrics, Incorporated | Thickness measurements of thin conductive films |
| SE463893B (en) * | 1987-09-28 | 1991-02-04 | Geotronics Ab | DEVICE FOR DETECTING THE LEVEL OF A BATTERY SURFACE OF A SMALL METAL BATH |
| JPH0194201A (en) * | 1987-10-06 | 1989-04-12 | Sumitomo Metal Ind Ltd | Method and apparatus for measuring thickness of molten slag |
| JPH0648185B2 (en) * | 1988-10-12 | 1994-06-22 | 明産株式会社 | Sheet thickness measuring device |
| US4876888A (en) * | 1988-11-17 | 1989-10-31 | John Ricketts | Thickness monitor for floated sludge |
| JPH02247539A (en) * | 1989-03-20 | 1990-10-03 | Nippon Steel Corp | Method for measuring slag thickness on molten metal |
| FR2651876B1 (en) * | 1989-09-13 | 1991-12-13 | Siderurgie Fse Inst Rech | PROCESS FOR CONTINUOUSLY DETERMINING THE THICKNESS OF LIQUID DAIRY ON THE SURFACE OF A BATH OF FUSED METAL IN A METALLURGICAL CONTAINER. |
| US5062298A (en) * | 1989-12-05 | 1991-11-05 | E. I. Du Pont De Nemours And Company | Non-contact wet or dry film thickness measuring device using eddy current and ultrasonic sensors |
| SE501472C2 (en) * | 1993-02-03 | 1995-02-27 | Stiftelsen Metallurg Forsk | Ways of measuring the positions of surfaces between different layers in metallurgical processes |
-
1994
- 1994-01-28 DE DE4402463A patent/DE4402463C2/en not_active Expired - Fee Related
- 1994-12-30 GB GB9426412A patent/GB2286051B/en not_active Expired - Fee Related
-
1995
- 1995-01-23 FR FR9500696A patent/FR2715722B1/en not_active Expired - Fee Related
- 1995-01-24 JP JP7009241A patent/JP2854256B2/en not_active Expired - Lifetime
- 1995-01-25 BE BE9500062A patent/BE1010228A5/en not_active IP Right Cessation
- 1995-01-26 KR KR1019950001399A patent/KR950032651A/en not_active Application Discontinuation
- 1995-01-27 CN CN95101669A patent/CN1109584A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102414543A (en) * | 2009-02-23 | 2012-04-11 | 哈茨有限公司 | Electromagnetic bath level measurement for pyrometallurgical furnaces |
| CN102414543B (en) * | 2009-02-23 | 2014-06-25 | 哈茨有限公司 | Electromagnetic bath level measurement for pyrometallurgical furnaces |
| CN101666614B (en) * | 2009-10-20 | 2011-08-10 | 北京科技大学 | Device and method for measuring thickness of molten slag layer of mold flux of continuous casting crystallizer |
| CN103080388B (en) * | 2010-08-24 | 2016-05-25 | 瓦里安半导体设备公司 | Vortex flow measurer for thickness and method |
| CN107504892A (en) * | 2017-10-13 | 2017-12-22 | 中国恩菲工程技术有限公司 | Ore-smelting electric furnace thickness of slag layer detection means and detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| BE1010228A5 (en) | 1998-04-07 |
| FR2715722A1 (en) | 1995-08-04 |
| DE4402463C2 (en) | 1998-01-29 |
| GB2286051A (en) | 1995-08-02 |
| KR950032651A (en) | 1995-12-22 |
| GB9426412D0 (en) | 1995-03-01 |
| JPH07225105A (en) | 1995-08-22 |
| GB2286051B (en) | 1998-03-04 |
| JP2854256B2 (en) | 1999-02-03 |
| DE4402463A1 (en) | 1995-08-03 |
| FR2715722B1 (en) | 1997-08-29 |
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