CN107127314A - A kind of continuous casting two cold section casting flow table face temperature intelligent measuring method - Google Patents
A kind of continuous casting two cold section casting flow table face temperature intelligent measuring method Download PDFInfo
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- CN107127314A CN107127314A CN201710226222.9A CN201710226222A CN107127314A CN 107127314 A CN107127314 A CN 107127314A CN 201710226222 A CN201710226222 A CN 201710226222A CN 107127314 A CN107127314 A CN 107127314A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
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- 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
- B22D2/006—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the temperature of the molten metal
Abstract
The invention discloses a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method, first pass through temperature measurer and measure temperature at the outlet of last fan-shaped section or straightening section in real time；Solidification and heat transfer model is resettled, off-line correction is carried out to the parameter of the model according to real time temperature measurement data, and the relevant parameter of solidification and heat transfer model is finely adjusted；Each control point temperature, and the online result of calculation for correcting each control point temperature in real time are finally calculated, while the true casting stream temperature distribution information of output.The present invention first pass through temperature measurer measure in real time last fan-shaped section outlet or straightening section at temperature, resettle solidification and heat transfer model, off-line correction is carried out to the parameter of the model according to real time temperature measurement data, and the relevant parameter of solidification and heat transfer model is finely adjusted, thermometric mode that will be traditional is combined as a whole with hard measurement mode, and the not enough and traditional thermometric mode of precision that hard measurement mode can be overcome to set up solidification and heat transfer model easily is influenceed to cause the problem of temperature-measuring results deviation is big by environmental disturbances.
Description
Technical field
The present invention relates to thermometry, more particularly to a kind of continuous casting two cold section casting flow table face temperature intelligent measurement side
Method.
Background technology
There are two big main realization means currently for the thermometric in two chill casting flow table faces.
The first kind, hard measurement mode：
It is the most universal in the hard measurement mode set up based on solidification and heat transfer model, and current continuous casting two cold water control system is big
Part is the foundation that the casting stream temperature calculated using the model is adjusted as secondary cooling water.But the calibration difficulty of its model is larger；
Model exists to boundary condition about to be subtracted and it is assumed that precision is not high, and the dynamically adapting ability to environment is poor；Two dimension, threedimensional model
Amount of calculation it is too big, calculate the time it is long, it is ageing not high.
It is another kind of, actual metering system：
Including heat collecting type thermocouple surface thermometry and radial pattern non-contact thermometry.
Heat collecting type thermocouple surface thermometry can only carry out the disposable measurement of single point temperature, response speed more slowly for 1~
2min, and temperature transducer will have with measurand and contact well, can produce certain destruction to casting flow table face.
Radial pattern non-contact thermometry has been developed into machine vision skill using infrared contactless temperature-measuring method as representative
Area array CCD radiant thermometric technology based on art.
Infrared measurement of temperature method is then to utilize heat radiation principle, can only measure the set point temperature of the local small range of body surface,
And easily influenceed by outside environmental elements, precision is relatively low.
Area array CCD radiant thermometric technology, the calibration difficulty of its equipment optical parametric is big；Optical distortion is difficult to overcome；Need
Other accurate temperature sensing meanses provide measuring temperature basis point, and system is compared with bulky complex；The data of acquisition are multidimensional and data volume is big,
Use processing is needed, intractability is big, and equipment cost is high, and maintenance cost is high.
The content of the invention
In order to solve problem of the prior art, the present invention provides a kind of continuous casting two cold section casting flow table face temperature intelligent measurement side
Method, comprises the following steps：
S1, temperature at the outlet of last fan-shaped section or straightening section is measured by temperature measurer in real time；
S2, solidification and heat transfer model is set up, off-line correction is carried out to the parameter of the model according to real time temperature measurement data, and to solidifying
Gu the relevant parameter of heat transfer model is finely adjusted；
S3, each control point temperature of calculating, and the online result of calculation for correcting each control point temperature in real time, while output is true
Casting stream temperature distribution information.
In step S1, temperature measurer selects temperature sensors of high precision, and designs cooling and protection device to temperature measurer, makes it
It is fully sealed to reach constant temperature and humidity and the working environment every magnetic.
In the step S2, the relevant parameter of solidification and heat transfer model is finely adjusted including real time temperature measurement data are carried out from
Line is emulated, and the parameter after the completion of being changed by off-line simulation is reloaded on the solidification and heat transfer model of on-line operation, is realized solidifying
Gu the self study of heat transfer model.
In the step S3, the process corrected in real time online is：By real time temperature measurement data with calculating temperature difference, by each section
Calculate temperature and calculate each section temperature progress Serial regulation with the down ratio of target temperature.
Further, it is described cooling and protection device include insulating box, dry decontamination device, rotational flow generator, sighting tube,
Dust-separation sleeve, electronic thermometer and control module；Temperature measurer is in the insulating box, and the lower section of the temperature measurer is provided with convenient
The flexible dust-separation sleeve of temperature measurer camera lens is to adjust focal length；The electronic thermometer is located at the constant temperature chamber interior wall；The constant temperature
Case is containment housing, and the wallboard for constituting its six face is set in hollow, and the top of the insulating box is provided with eddy flow medium inlet, left
Upper lateral part is provided with cooling medium entrance, and lower right side is exported provided with cooling medium；The cooling medium porch is provided with regulating valve,
The regulating valve is connected with the control module signal, and the temperature control measured by the control module according to electronic thermometer
The aperture of regulating valve is to adjust the flow of cooling medium, for carrying out constant temperature closed-loop control to the temperature in insulating box；The rotation
Flow medium porch is provided with dry decontamination device, for carrying out removal of impurities and drying to eddy flow medium；The rear end of sighting tube passes through method
Orchid is connected with insulating box, and located at the lower section of the dust-separation sleeve, eddy flow medium can be made to be purged by sighting tube to by thermometric and cast
Flow table face makes light path clear；And the exit of the sighting tube be in the wide arcuate structure in narrow-minded two, ensureing normal purge
Under conditions of intensity and formation minimum light spot, increase narrow place's gas purging speed, reduce the probability that pollution medium enters sighting tube.
Preferably, eddy flow medium is compressed air or nitrogen；Cooling medium is cooling water.
In step S1, reciprocator is designed to temperature measurer, by the drive of reciprocator, measuring instrument is existed
Last fan-shaped section export or straightening section at vertical casting flow table face, vertical pulling rate direction do at the uniform velocity reciprocal thermometric fortune back and forth
It is dynamic.
In step S3, calculate each control point temperature and comprise the following steps：
S301, the uniform motion speed v for gathering temperature measurerScanning, sweep length wScanning, the calculating scan period is tScanning=wScanning/
vScanning；
S302, the sampling period of temperature measurer is set as τThermometric, calculate thermometric spacing d on casting stream cross section widthThermometric=
vScanningτThermometric；
S303, calculating sweep length wScanningIn the range of temperature data row K, the temperature data row K=wScanning/dThermometric+1；
S304, by design data calculate window to slacken the influence of iron scale, and data are calculated into same row in window
Temperature data maximum as the column data data available；
S305, Statistic analysis models are set up, if y represents temperature output, x is the lateral attitude that temperature data is arranged, using many
Item formula fitting, then：
Y=b0+b1x+b2x2+···+bmxm
Wherein bi(i=1,2, m) be multinomial coefficient, m is polynomial order, if temperature measuring data to for
(xj,yj) (j=1,2, K) and, wherein xjFor lateral attitude coordinate, yjFor xjActual measurement temperature data at position；
And solved using least square method
S306, according to Statistic analysis models, if the location of control point of continuous thermometering device is xc, then control point pass through
The true thermometric value crossed after filtering process is yc=b0+b1xc+b2xc 2+···+bmxc m, the true thermometric value can be as solidifying
Gu the temperature reference data of heat transfer model calibration, so that accurately casting stream surface temperature is obtained, to carry out secondary cooling water closed-loop control.
In the step S304, the design that the data calculate window includes finish time, start time and length of window；Its
Finish time is current time, at the time of start time is corresponded to before n scan period, length of window LWindow=ntScanningvDraw。
Length of window LWindow=ntScanningvDrawLimit length need to be less than, the limit length is carried out according to the feature of field oxidation iron sheet
Setting；Scan period n need to meet n ＜ tControl/tScanning, wherein tControlFor secondary cooling water control duration, tScanningFor the linear reciprocation of temperature measurer
The period of motion, straight reciprocating motion cycle tScanningSet according to field condition.
Compared with prior art, the present invention first passes through temperature measurer and measured in real time at the outlet of last fan-shaped section or straightening section
Temperature, resettle solidification and heat transfer model, off-line correction carried out to the parameter of the model according to real time temperature measurement data, and to solidification
The relevant parameter of heat transfer model is finely adjusted, and thermometric mode that will be traditional is combined as a whole with hard measurement mode, can overcome
Hard measurement mode is that the not enough and traditional thermometric mode of precision for setting up solidification and heat transfer model easily is influenceed to cause thermometric by environmental disturbances
The problem of result error is big；Meanwhile, cooling and protection device using independent design can effectively improve the use longevity of temperature measurer
Life, by the frequency for the maintaining for reducing temperature measurer so as to reduce the measurement cost that stream surface temperature is cast to secondary cooling zone；To surveying
Warm instrument design reciprocator simultaneously combines the means, energy such as unique data acquisition, filtering and data processing Statistic analysis models
It is enough to eliminate the influences of the disturbing factor to temperature-measuring results such as iron scale, moisture film to greatest extent, while can be according to live actual rings
Border sets suitable thermometric and kinematic parameter, so as to reduce influence of the thermometric time delay to secondary cooling zone control system, is continuous casting two
Cold section of closed-loop control provides real-time, accurate temperature data, improves the ageing and accuracy of control, and save drop for secondary cooling zone
The data reference of offer science is provided.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the method flow schematic diagram of the present invention；
Fig. 2 is the flow chart of the temperature computation of the present invention.
Embodiment
The present invention provides a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method, comprises the following steps：
S1, temperature at the outlet of last fan-shaped section or straightening section is measured by temperature measurer in real time；
S2, solidification and heat transfer model is set up, off-line correction is carried out to the parameter of the model according to real time temperature measurement data, and to solidifying
Gu the relevant parameter of heat transfer model is finely adjusted；
S3, each control point temperature of calculating, and the online result of calculation for correcting each control point temperature in real time, while output is true
Casting stream temperature distribution information.
Temperature measurer selects temperature sensors of high precision, and designs cooling and protection device to temperature measurer, and it is fully sealed
To reach constant temperature and humidity and the working environment every magnetic.
Select last fan-shaped section export thermometric the reason for be：Last fan-shaped section is in the end in two cold water spray areas
Much friendly for position, the relatively whole two cold water sprays closed environment of its environment, environmental disturbances are smaller, it is easier to obtain accurate
Temperature measurement data.
Selection straightening section thermometric the reason for be：There is brittle temperature range in steel grade, when it is in fragility interval, it is allowed to
The contraction percentage of area is smaller, and yield strength is small, and casts stream in combined stress of the tension leveling segment by larger mechanical stress and thermal stress,
Just probably exceed yield strength so that casting the raw internal and surface quality problems of miscarriage, therefore monitor the table of straightening section in real time
Face temperature, judges whether it falls and is just particularly important in the brittle temperature range for corresponding to steel grade.The cooling and protection device
Including insulating box, dry decontamination device, rotational flow generator, sighting tube, dust-separation sleeve, electronic thermometer and control module；Thermometric
Instrument is in the insulating box, and the lower section of the temperature measurer is provided with the dust-separation sleeve that facilitates temperature measurer camera lens flexible to adjust Jiao
Away from；The electronic thermometer is located at the constant temperature chamber interior wall；The insulating box is containment housing, and the wallboard for constituting its six face is in
Hollow to set, the top of the insulating box is provided with eddy flow medium inlet, and left upper portion is provided with cooling medium entrance, and lower right side is set
There is cooling medium outlet；The cooling medium porch is provided with regulating valve, and the regulating valve is connected with the control module signal,
And the aperture of the temperature control regulating valve measured by the control module according to electronic thermometer is to adjust the flow of cooling medium,
For carrying out constant temperature closed-loop control to the temperature in insulating box；Dry decontamination device is provided with the eddy flow medium inlet, is used for
Removal of impurities and drying are carried out to eddy flow medium；The rear end of sighting tube is connected by flange with insulating box, and located at the dust-separation sleeve
Lower section, eddy flow medium can be made, which to be purged by sighting tube to casting flow table face by thermometric, makes light path clear；And the sighting tube goes out
The wide arcuate structure in narrow-minded two in being at mouthful, under conditions of ensureing normal purge intensity and forming minimum light spot, increases narrow
Locate gas purging speed, reduce the probability that pollution medium enters sighting tube.
Eddy flow medium is compressed air or nitrogen；Cooling medium is cooling water.
Dry purge gas and suitable purging intensity on the one hand can be provided using the cooling and protection device, with
Ensure suitable positive pressure in sighting tube, it is to avoid the interference of dust, steam, greasy dirt etc., it is ensured that dust-separation sleeve front portion optical filter
Cleaning, reduce radiation signal decay intensity in the optical path；On the other hand too strong purging air-flow is avoided, is produced from casting flow table face
Raw impact, is caused by casting flow table face to be measured at purging because forced convertion is acted on and produces temperature drop by a relatively large margin, and non-genuine is cast
Flow surface temperature.The infrared radiation signal that temperature measurer is relatively stablized, just can obtain more real measured point surface temperature.
Dust-separation sleeve is set on the one hand to facilitate the flexible to realize accurate focusing of temperature measurer camera lens, simultaneously as dust-separation set
The front end of cylinder namely one end of close sighting tube are provided with lens, and insulating box can be made to form relatively closed environment isolation with extraneous
Water, vapour, the contact of dirt, to ensure the measurement accuracy and service life of temperature measurer, on the other hand ensure from the red of sighting tube introduction
UV light can reach temperature measurer by lens and carry out thermometric.
Eddy flow medium is purged to by thermometric by sighting tube casts flow table face, so that light path is clear；To avoid steam, dust etc.
Interference medium does not enter in sighting tube, and design is optimized to sighting tube outlet, forms the wide arc in narrow-minded two in exit
Structure, when eddy flow medium passes through sighting tube exit, accelerates the rate of outflow of gas, reduces pollution medium and flows into sighting tube dirt
The probability of light path is contaminated, the most narrow place in exit, which can guarantee that, obtains minimum light spot；Sighting tube is carried out close to survey through narrow roll gap
Amount, can shorten the complex optical path passage that medium is disturbed comprising steam, moisture film, dust etc. as far as possible；The length of sighting tube can root
Determined according to site environment and demand；Sighting tube rear end is connected by flange with insulating box, Quick Release quick change can be achieved, in order to set
It is standby to install and safeguard.
Meanwhile, reciprocator is designed to temperature measurer, by the drive of reciprocator, enables measuring instrument last
At the uniform velocity reciprocal thermometric back and forth is done in vertical casting flow table face, vertical pulling rate direction at the outlet of one fan-shaped section or straightening section, is obtained
One-time continuous temperature measurement data, but the temperature measurement data is not casting flow table due to being influenceed by disturbing factors such as iron scale, moisture films
Face true temperature is, it is necessary to carry out relevant treatment.
Therefore, in the step S2, the relevant parameter of solidification and heat transfer model is finely adjusted including to real time temperature measurement data
Off-line simulation is carried out, the parameter after the completion of being changed by off-line simulation is reloaded on the solidification and heat transfer model of on-line operation,
Realize the self study of solidification and heat transfer model.
In the step S3, the process corrected in real time online is：By real time temperature measurement data with calculating temperature difference, by each section
Calculate temperature and calculate each section temperature progress Serial regulation with the down ratio of target temperature.
In step S3, calculate each control point temperature and comprise the following steps：
S301, the uniform motion speed v for gathering temperature measurerScanning, sweep length wScanning, the calculating scan period is tScanning=wScanning/
vScanning；
S302, the sampling period of temperature measurer is set as τThermometric, calculate thermometric spacing d on casting stream cross section widthThermometric=
vScanningτThermometric；
S303, calculating sweep length wScanningIn the range of temperature data row K, the temperature data row K=wScanning/dThermometric+1；
S304, by design data calculate window to slacken the influence of iron scale, and data are calculated into same row in window
Temperature data maximum as the column data data available；
S305, Statistic analysis models are set up, if y represents temperature output, x is the lateral attitude that temperature data is arranged, using many
Item formula fitting, then：
Y=b0+b1x+b2x2+···+bmxm
Wherein bi(i=1,2, m) be multinomial coefficient, m is polynomial order, if temperature measuring data to for
(xj,yj) (j=1,2, K) and, wherein xjFor lateral attitude coordinate, yjFor xjActual measurement temperature data at position；
And solved using least square method
S306, according to Statistic analysis models, if the location of control point of continuous thermometering device is xc, then control point pass through
The true thermometric value crossed after filtering process is yc=b0+b1xc+b2xc 2+···+bmxc m, the true thermometric value can be as solidifying
Gu the temperature reference data of heat transfer model calibration, so that accurately casting stream surface temperature is obtained, to carry out secondary cooling water closed-loop control.
In the step S304, the design that the data calculate window includes finish time, start time and length of window；Its
Finish time is current time, at the time of start time is corresponded to before n scan period, length of window LWindow=ntScanningvDraw。
Length of window LWindow=ntScanningvDrawLimit length need to be less than, the limit length is carried out according to the feature of field oxidation iron sheet
Setting；Scan period n need to meet n ＜ tControl/tScanning, wherein tControlFor secondary cooling water control duration, tScanningFor the linear reciprocation of temperature measurer
The period of motion, straight reciprocating motion cycle tScanningSet according to field condition.
To sum up, the present invention first pass through temperature measurer measure in real time last fan-shaped section outlet or straightening section at temperature, then
Solidification and heat transfer model is set up, off-line correction is carried out to the parameter of the model according to real time temperature measurement data, and to solidification and heat transfer model
Relevant parameter be finely adjusted, thermometric mode that will be traditional is combined as a whole with hard measurement mode, can overcome hard measurement side
Formula is that the not enough and traditional thermometric mode of precision for setting up solidification and heat transfer model easily is influenceed to cause temperature-measuring results deviation by environmental disturbances
Big the problem of；Meanwhile, cooling and protection device using independent design can effectively improve the service life of temperature measurer, pass through
The frequency for reducing the maintaining of temperature measurer casts the measurement cost for flowing surface temperature to secondary cooling zone so as to reduce；Temperature measurer is designed
Reciprocator simultaneously combines the means such as unique data acquisition, filtering and data processing Statistic analysis models, being capable of maximum limit
Degree eliminates the influences of the disturbing factor to temperature-measuring results such as iron scale, moisture film, while can be set according to live actual environment
Suitable thermometric and kinematic parameter, are continuous casting two cold section closed loop so as to reduce influence of the thermometric time delay to secondary cooling zone control system
Control provides real-time, accurate temperature data, improves the ageing and accuracy of control, and be the energy-saving offer section of secondary cooling zone
Data reference.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method, it is characterised in that comprise the following steps：
S1, temperature at the outlet of last fan-shaped section or straightening section is measured by temperature measurer in real time；
S2, solidification and heat transfer model is set up, off-line correction is carried out to the parameter of the model according to real time temperature measurement data, and solidification is passed
The relevant parameter of thermal model is finely adjusted；
S3, each control point temperature of calculating, and the online result of calculation for correcting each control point temperature in real time, while the true casting of output is flowed
Temperature distribution information.
2. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 1, it is characterised in that institute
State in step S2, the relevant parameter of solidification and heat transfer model is finely adjusted including carrying out off-line simulation to real time temperature measurement data, will
Parameter after the completion of being changed by off-line simulation is reloaded on the solidification and heat transfer model of on-line operation, realizes solidification and heat transfer model
Self study.
3. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 1, it is characterised in that institute
State in step S3, the process corrected in real time online is：By real time temperature measurement data with calculating temperature difference, temperature is calculated by each section same
The down ratio of target temperature calculates temperature to each section and carries out Serial regulation.
4. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 1, it is characterised in that step
In rapid S1, temperature measurer selects temperature sensors of high precision, and designs cooling and protection device to temperature measurer, it is fully sealed with
Reach constant temperature and humidity and the working environment every magnetic.
5. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 4, it is characterised in that institute
Stating cooling and protection device includes insulating box, dry decontamination device, rotational flow generator, sighting tube, dust-separation sleeve, electronic thermometer
And control module；Temperature measurer in the insulating box, the lower section of the temperature measurer be provided with facilitate temperature measurer camera lens flexible every
Dirt sleeve is to adjust focal length；The electronic thermometer is located at the constant temperature chamber interior wall；The insulating box is containment housing, constitutes it
The wallboard in six faces is set in hollow, and the top of the insulating box is provided with eddy flow medium inlet, and left upper portion is provided with cooling medium
Entrance, lower right side is exported provided with cooling medium；The cooling medium porch is provided with regulating valve, the regulating valve and the control
Molding block signal is connected, and the aperture of the temperature control regulating valve measured by the control module according to electronic thermometer is to adjust
The flow of cooling medium, for carrying out constant temperature closed-loop control to the temperature in insulating box；Provided with dry at the eddy flow medium inlet
Dry purifier, for carrying out removal of impurities and drying to eddy flow medium；The rear end of sighting tube is connected by flange with insulating box, and is set
In the lower section of the dust-separation sleeve, eddy flow medium can be made, which to be purged by sighting tube to by thermometric casting flow table face, makes light path clear；And
The exit of the sighting tube wide arcuate structure in narrow-minded two in being in, is ensureing normal purge intensity and is forming minimum light spot
Under the conditions of, increase narrow place's gas purging speed, reduce the probability that pollution medium enters sighting tube.
6. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 1, it is characterised in that rotation
Flow medium is compressed air or nitrogen；Cooling medium is cooling water.
7. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 1, it is characterised in that step
In rapid S1, reciprocator is designed to temperature measurer, by the drive of reciprocator, measuring instrument is fanned at last
At the uniform velocity reciprocal thermometric motion back and forth is done in vertical casting flow table face, vertical pulling rate direction at the outlet of shape section or straightening section.
8. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 1, it is characterised in that step
In rapid S3, calculate each control point temperature and comprise the following steps：
S301, the uniform motion speed v for gathering temperature measurerScanning, sweep length wScanning, the calculating scan period is tScanning=wScanning/vScanning；
S302, the sampling period of temperature measurer is set as τThermometric, calculate thermometric spacing d on casting stream cross section widthThermometric=vScanning
τThermometric；
S303, calculating sweep length wScanningIn the range of temperature data row K, the temperature data row K=wScanning/dThermometric+1；
S304, by design data calculate window to slacken the influence of iron scale, and data are calculated to the temperature of same row in window
Data maximums as the column data data available；
S305, Statistic analysis models are set up, if y represents temperature output, x is the lateral attitude that temperature data is arranged, using multinomial
Fitting, then：
Y=b0+b1x+b2x2+…+bmxm
Wherein bi(i=1,2 ..., are m) multinomial coefficient, m is polynomial order, if temperature measuring data is to for (xj,yj)(j
=1,2 ..., K), wherein xjFor lateral attitude coordinate, yjFor xjActual measurement temperature data at position；
And solved using least square method
S306, according to Statistic analysis models, if the location of control point of continuous thermometering device is xc, then control point is through filtering
True thermometric value after ripple processing is yc=b0+b1xc+b2xc 2+…+bmxc m, the true thermometric value can be used as solidification and heat transfer mould
The temperature reference data of type calibration, so that accurately casting stream surface temperature is obtained, to carry out secondary cooling water closed-loop control.
9. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 8, it is characterised in that institute
State in step S304, the design that the data calculate window includes finish time, start time and length of window；Its finish time is
Current time, at the time of start time is corresponded to before n scan period, length of window LWindow=ntScanningvDraw。
10. a kind of continuous casting two cold section casting flow table face temperature intelligent measuring method according to claim 9, it is characterised in that
Length of window LWindow=ntScanningvDrawLimit length need to be less than, the limit length is set according to the feature of field oxidation iron sheet；Sweep
The cycle n of retouching need to meet n ＜ tControl/tScanning, wherein tControlFor secondary cooling water control duration, tScanningFor the straight reciprocating motion week of temperature measurer
Phase, straight reciprocating motion cycle tScanningSet according to field condition.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865810A (en) * | 2019-03-22 | 2019-06-11 | 麦特勒智能科技(张家港)有限公司 | A kind of intelligent control method of metallurgical continuous casting cooling water |
| CN111347023A (en) * | 2018-12-24 | 2020-06-30 | 上海梅山钢铁股份有限公司 | Method for correcting influence of oxide layer on surface of continuous casting billet on radiation temperature measurement |
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| CN111347023B (en) * | 2018-12-24 | 2021-11-16 | 上海梅山钢铁股份有限公司 | Method for correcting influence of oxide layer on surface of continuous casting billet on radiation temperature measurement |
| CN109865810A (en) * | 2019-03-22 | 2019-06-11 | 麦特勒智能科技(张家港)有限公司 | A kind of intelligent control method of metallurgical continuous casting cooling water |
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