CN105710323B - A kind of slab scale surveys long method and system - Google Patents
A kind of slab scale surveys long method and system Download PDFInfo
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- CN105710323B CN105710323B CN201610087984.0A CN201610087984A CN105710323B CN 105710323 B CN105710323 B CN 105710323B CN 201610087984 A CN201610087984 A CN 201610087984A CN 105710323 B CN105710323 B CN 105710323B
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
-
- 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
- B22D11/163—Controlling or regulating processes or operations for cutting cast stock
Abstract
The present invention relates to automatic control technology field, discloses a kind of slab scale and surveys long method and system, including：The default unit strand time, obtain strand and terminate required unit strand time number, obtain instantaneous strand speed of each unit strand time when starting, instantaneous strand speed when being started according to each unit strand time calculates the strand length of each unit strand time, adds and obtain slab length by the strand length of each unit strand time.The present invention is by dividing multiple unit strand times, the strand length of each unit strand time is obtained respectively, finally obtains total strand length, and the scale for completing the slab to casting out surveys length, the stability of slab scalling-off detecting is improved, improves slab lumber recovery comprehensively.
Description
Technical field
The present invention relates to automatic control technology field, and long method and system are surveyed more particularly to a kind of slab scale.
Background technology
Sheet billet continuous casting be by the smelting technique of slab caster continuous casting plate blank, will be through supercooling after the completion of slab casting
But anneal, often slab can produce bad template after annealing, can be entered to reach following process requirement by withdrawal straightening machine
Row stretches, and is then fed into slab cutting area.As STEELMAKING PRODUCTION rhythm is constantly accelerated, requirement of the client to slab quality is also more next
It is higher.Therefore it is required for carrying out slab scale survey length before slab cutting, length is then surveyed according to scale and cut, is obtained
The sub- base that client needs.
Present most domestic slab scale surveys length and generally uses traditional measurement roller scale system, as shown in figure 1, measurement
Roller scale system includes measurement roller 1, pneumatic cylinder 2 and encoder 3, and pneumatic cylinder 2, which promotes, measures the side that roller 1 is pressed against slab, plate
Base drives measurement roller to rotate in withdrawal straightening machine horizontal segment running, and the encoder 3 being connected with measurement roller calculates measurement roller rotation
The number of turns turned obtains the length of slab.
Following Railway Projects be present using measurement roller scale system：1st, the speed reducing ratio for measuring roller is small；2nd, measurement roller is rotating
During occur abrasion, skid situation；3rd, measure roller to lean against roll-in is measured on slab by cylinder pressure, gas pressure ripple
It is dynamic big, it sometimes appear that measurement roller such as does not rotate at the failure, cause encoder can not normally count the length of tracking scale.More than
Problem can all cause to influence the stability that slab scale surveys length, have a strong impact on the precision of slab cutting.
The content of the invention
A kind of slab scale is provided in the embodiment of the present invention and surveys long method and system, to solve scale of the prior art
Survey the problem of long unstable.
In order to solve the above-mentioned technical problem, the embodiment of the invention discloses following technical scheme：
A kind of slab scale surveys long method, and methods described includes：
The default unit strand time；
Obtain strand and terminate required unit strand time number；
Obtain instantaneous strand speed of each unit strand time when starting；
Instantaneous strand speed when being started according to each unit strand time calculates the casting of each unit strand time
Base length, the strand length of each unit strand time is added and obtained slab length.
Preferably, the acquisition strand terminates required unit strand time number, including：
When each unit strand time starts, the unit strand time number needed for strand is added up；
When terminating current one strand time strand, judge whether strand terminates；
If strand does not terminate, continue the strand of next unit strand time, and unit strand time number is carried out
It is cumulative；Or
If strand terminates, stop strand, preserve unit strand time number.
Preferably, it is described to judge whether strand terminates, including：
The afterbody base head position of detection slab in real time；
If at the end of the current one strand time, detect that the afterbody base head position is differed with current end position
Cause, then strand does not terminate, continues strand operation；Or
If at the end of the current one strand time, detecting that the afterbody base head position is consistent with current end position,
Then strand terminates.
Preferably, instantaneous strand speed when acquisition each unit strand time starts includes：
Obtain each unit strand time motor for withdrawal ＆ straightening machine instant rotation speed and motor for withdrawal ＆ straightening machine running frequency when starting；
Instantaneous strand speed is obtained according to the instant rotation speed and the running frequency.
Preferably, the acquisition motor for withdrawal ＆ straightening machine instant rotation speed includes：
Obtain the rated speed of motor for withdrawal ＆ straightening machine and the speed reducing ratio of motor；
Obtain withdrawal straightening machine straightening roller diameter；
The motor for withdrawal ＆ straightening machine instant rotation is obtained according to the rated speed, the speed reducing ratio and the straightening roller diameter
Speed.
A kind of slab scale length measurement system, the system include：
Presetting module, for presetting the unit strand time；
First acquisition module, terminate required unit strand time number for obtaining strand；
Second acquisition module, for obtain each unit strand time start when instantaneous strand speed；
Processing module, instantaneous strand speed when each unit strand time for being obtained according to the acquisition module starts
Degree calculates the strand length of each unit strand time, adds and obtain slab to grow the strand length of each unit strand time
Degree.
Preferably, first acquisition module includes：
Counting unit, for when each unit strand time starts, entering to the unit strand time number needed for strand
Row is cumulative；
Judging unit, for judging whether strand terminates when terminating current one strand time strand.
Preferably, the judging unit includes：
Detection sub-unit, for detecting the afterbody base head position of slab in real time；
Judgment sub-unit, for judge terminate the current one strand time, current end position whether with the detection
The afterbody base head position consistency that subelement detects.
Preferably, second acquisition module includes：
Acquiring unit, for obtaining motor for withdrawal ＆ straightening machine instant rotation speed and motor for withdrawal ＆ straightening machine running frequency；
Processing unit, for handling the instant rotation speed and the running frequency that the acquiring unit obtains, obtain
Obtain instantaneous strand speed.
Preferably, the acquiring unit includes：
Subelement is obtained, it is straight for obtaining the rated speed of motor for withdrawal ＆ straightening machine, the speed reducing ratio of motor and withdrawal straightening machine pulling-straightening roller
Footpath；
Subelement is handled, the rated speed, the speed reducing ratio and described obtained for handling the acquisition subelement
Straightening roller diameter obtains the motor for withdrawal ＆ straightening machine instant rotation speed.
From above technical scheme, a kind of slab scale provided in an embodiment of the present invention surveys long method and system, including：
The default unit strand time, obtain strand and terminate required unit strand time number, obtaining each unit strand time starts
When instantaneous strand speed, instantaneous strand speed when being started according to each unit strand time calculates each unit strand
The strand length of time, the strand length of each unit strand time is added and obtained slab length.It is multiple by dividing
The unit strand time, the strand length of each unit strand time is obtained respectively, finally obtain total strand length, complete to casting
The scale for the slab produced surveys length, improves the stability of slab scalling-off detecting, improves slab lumber recovery comprehensively.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation that traditional measurement roller measures scale system；
Fig. 2 is the schematic flow sheet that a kind of slab scale provided in an embodiment of the present invention surveys long method；
Fig. 3 is a kind of method flow signal for obtaining strand and terminating unit strand time number provided in an embodiment of the present invention
Figure；
Fig. 4 is a kind of schematic flow sheet of method for judging strand state provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of slab scale length measurement system provided in an embodiment of the present invention.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention
Scope.
Referring to Fig. 2, for a kind of schematic flow sheet of the long method of slab scale survey provided in an embodiment of the present invention, methods described
Including：
S101, the unit strand time is preset, because in slab casting, a bit of slab, the drawing of strand may be cast
Speed in the default unit strand time, takes smaller value nor uniform as far as possible, so in each unit strand
In strand speed level off to instantaneous strand speed of unit strand time when starting.Preferably, unit strand
Time can be set as 100ms.
S102, obtain strand and terminate required unit strand time number；
During strand, a counter is set, when each unit strand time starts, to the unit needed for strand
Strand time number is added up；For example, starting strand hour counter in first unit strand time is counted as 1, terminate the
After N-1 unit strand time strand operation, rolling counters forward N-1；If now strand does not terminate, enter n-th list again
The strand operation of position strand time, counter can when the n-th unit strand time starts, to the number of unit strand time from
It is dynamic plus 1, because it is N-1 to be counted in previous moment, then when the n-th unit strand time starts, rolling counters forward N.
The method shown in Figure 3 for terminating unit strand time number for a kind of acquisition strand provided in an embodiment of the present invention
Schematic flow sheet；
S201, the operation of current one strand time strand terminate；If with the unit strand time with the hypothesis in S101
Exemplified by 100ms, it is since operating current one strand time strand to judge that the operation of current one strand time strand terminates
100ms is crossed, judges that the operation of current one strand time strand terminates.
S202, judges whether strand terminates；
Referring to the schematic flow sheet that Fig. 4 is a kind of method for judging strand state provided in an embodiment of the present invention；
Judge whether strand terminates to be specially：
S301, the afterbody base head position of slab is detected in real time；Specifically during strand, multiple video cameras can be set
IMAQ is carried out, the image collected is analyzed, obtains slab afterbody base head, and real-time tracking detects afterbody base head
Position.
S302, judge whether the afterbody base head position is consistent with current end position；Current one strand time strand
After operation terminates, video camera obtains whether the position currently terminated overlap with the image of the afterbody base head, to judge
Whether consistent with current end position state afterbody base head position.
S303, if the afterbody base head position is consistent with current end position, strand terminates；What if video camera obtained
Afterbody base head with current end position in the picture when overlap, then judge the afterbody base head position and current end position one
Cause, send control instruction, terminate current strand operation, strand terminates.
S304, if the afterbody base head position and current end position are inconsistent, strand does not terminate；If video camera obtains
The afterbody base head taken is misaligned in the picture with current end position, then judges the afterbody base head position and current end position
It is inconsistent, continue current strand operation, strand does not terminate.
S203, if strand terminates, stop strand operation, preserve unit strand time number；For example, if complete N-1
After the strand operation of individual unit strand time, strand terminates, then need not continue strand, therefore records strand and terminate required unit
The strand time is N-1, and is preserved, and is used for the follow-up slab length that calculates.
S204, if strand is not terminate, continue the strand of next unit strand time, and the unit strand time is individual
Number is added up；After if the same strand in the N-1 unit strand time of completion operates, strand does not terminate, then can
The strand operation of n-th unit strand time is gone successively to, at the same time the number of unit strand time can be in previous unit
Added up on the basis of strand time counting, number is changed into N from N-1.
S103, obtain instantaneous strand speed of each unit strand time when starting；
Motor for withdrawal ＆ straightening machine instant rotation speed and motor for withdrawal ＆ straightening machine operation when starting of each unit strand time are obtained first
Frequency；Instantaneous strand speed is obtained according to the instant rotation speed and the running frequency.
If the motor for withdrawal ＆ straightening machine instant rotation speed obtained is vx, the motor operation frequency of withdrawal straightening machine is F, then institute
It is Vn=vx/50*F to state instant rotation speed, it is assumed that strand terminates to need by N number of unit strand time, therefore to count respectively
Calculate the instant rotation speed of each unit strand time, the motor operation frequency F of wherein withdrawal straightening machine is fixed, but withdrawal straightening machine
Motor transient speed may change, therefore gather the withdrawal straightening machine instant rotation speed that each unit interval starts respectively.
The instant rotation speed of first unit strand time：V1=v1/50*F；
The instant rotation speed of second unit strand time：V2=v2/50*F；
The instant rotation speed of 3rd unit strand time：V3=v3/50*F；
…………………………………………
The instant rotation speed of the N-1 unit strand time：Vn-1=vn-1/50*F；
The instant rotation speed of n-th unit strand time：Vn=vn/50*F.
Preferably, the acquisition motor for withdrawal ＆ straightening machine instant rotation speed includes：Obtain motor for withdrawal ＆ straightening machine rated speed and
The speed reducing ratio of motor, withdrawal straightening machine straightening roller diameter is obtained, according to the rated speed, the speed reducing ratio and the straightening roller diameter
Obtain the motor for withdrawal ＆ straightening machine instant rotation speed；
If the rated speed of motor is M, the speed reducing ratio of motor is S, a diameter of D of withdrawal straightening machine pulling-straightening roller, then withdrawal straightening machine
Motor instant rotation speed vx=1/S*M* π * D/1000.When wherein each unit strand time starts, the deceleration of the motor
The motor for withdrawal ＆ straightening machine instant rotation speed vx can be influenceed than S, so as to cause withdrawal straightening machine when commensurate's strand time does not start
Instant rotation speed has certain error.
S104, instantaneous strand speed when being started according to each unit strand time calculate each unit strand time
Strand length, the strand length of each unit strand time is added and obtained slab length.
Also assume that strand terminated to need by N number of unit strand time, then：
The strand length of first unit strand time：S1=100/60000*V1；
The strand length of second unit strand time：S2=100/60000*V2；
The strand length of 3rd unit strand time：S3=100/60000*V2；
…………………………………………
The strand length of the N-1 unit strand time：Sn-1=100/60000*Vn-1；
The strand length of n-th unit strand time：Sn=100/60000*Vn,
Strand terminates N number of unit strand time strand length (cut lengths) L=S1+S2+S3+ ...+Sn-1+Sn.
As seen from the above-described embodiment, a kind of slab scale that the present embodiment provides, which surveys long method, to be included：Default unit strand
Time, obtain strand and terminate required unit strand time number, obtain instantaneous strand of each unit strand time when starting
Speed, instantaneous strand speed when being started according to each unit strand time calculate the strand of each unit strand time and grown
Degree, the strand length of each unit strand time is added and obtained slab length.By dividing multiple unit strand times,
The strand length of each unit strand time is obtained respectively, finally obtains total strand length, is completed to the slab that casts out
Scale surveys length, improves the stability of slab scalling-off detecting, improves slab lumber recovery comprehensively.
Corresponding with a kind of long embodiment of the method for slab scale survey provided by the invention, present invention also offers a kind of slab
Scale length measurement system.
It is a kind of structural representation of slab scale length measurement system provided in an embodiment of the present invention referring to Fig. 5, the system
Including：
Presetting module 401, for presetting the unit strand time；
First acquisition module 402, terminate required unit strand time number for obtaining strand；
First acquisition module 402 includes counting unit and judging unit.The counting unit, in each unit
When the strand time starts, the unit strand time number needed for strand is added up；The judging unit, for judging tying
During beam current one strand time strand, whether strand terminates.
The judging unit includes detection sub-unit and judgment sub-unit again：The detection sub-unit, for detecting in real time
The afterbody base head position of slab；The judgment sub-unit, for judging terminating the current one strand time, current end position
Whether the afterbody base head position consistency detected with the detection sub-unit.
Second acquisition module 403, for obtain each unit strand time start when instantaneous strand speed；
Second acquisition module 403 includes：Acquiring unit and processing unit.The acquiring unit, for obtaining straightening
Electromechanical machine instant rotation speed and motor for withdrawal ＆ straightening machine running frequency；The processing unit, obtained for handling the acquiring unit
The instant rotation speed and the running frequency, obtain instantaneous strand speed.
The acquiring unit includes obtaining subelement and processing subelement again：The acquisition subelement, for obtaining straightening
The rated speed of electromechanical machine, the speed reducing ratio of motor and withdrawal straightening machine straightening roller diameter；The processing subelement, for handling described obtain
The rated speed, the speed reducing ratio and the straightening roller diameter for taking subelement to obtain obtain the motor for withdrawal ＆ straightening machine and instantaneously turned
Dynamic speed.
Processing module 404, instantaneous casting when each unit strand time for being obtained according to the acquisition module starts
Base speed calculates the strand length of each unit strand time, adds and obtain slab by the strand length of each unit strand time
Length.
As seen from the above-described embodiment, a kind of slab scale that the present embodiment provides surveys long method system, including presetting module
401st, the first acquisition module 402, the second acquisition module 403 and processing module 404, the presetting module 401 preset unit strand
Time, first acquisition module 402 obtain strand and terminate required unit strand time number, second acquisition module
Instantaneous strand speed when 403 acquisition each unit strand times started, the processing module 404 are cast according to each unit
Instantaneous strand speed when the base time starts calculates the strand length of each unit strand time, will each unit strand when
Between strand length add and obtain slab length.The system improves the stability of slab scalling-off detecting, improve slab into
Material rate.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.Especially for system or
For system embodiment, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to method
The part explanation of embodiment.System and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates can be or may not be it is physically separate, can be as the part that unit is shown or
Person may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can root
Factually border needs to select some or all of module therein realize the purpose of this embodiment scheme.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
It should be noted that herein, the relational terms of such as " first " and " second " or the like are used merely to one
Individual entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover including for nonexcludability, so that process, method, article or equipment including a series of elements not only include those
Key element, but also the other element including being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element in the process including the key element, method, article or equipment also be present.
Described above is only the embodiment of the present invention, is made skilled artisans appreciate that or realizing this hair
It is bright.A variety of modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of slab scale surveys long method, it is characterised in that methods described includes：
The default unit strand time；
Obtain strand and terminate required unit strand time number；
Obtain instantaneous strand speed of each unit strand time when starting；
Instantaneous strand speed when being started according to each unit strand time calculates the strand of each unit strand time and grown
Degree, the strand length of each unit strand time is added and obtained slab length.
2. slab scale according to claim 1 surveys long method, it is characterised in that the acquisition strand terminates required list
Position strand time number, including：
When each unit strand time starts, the unit strand time number needed for strand is added up；
When terminating current one strand time strand, judge whether strand terminates；
If strand does not terminate, continue the strand of next unit strand time, and unit strand time number is added up；
Or
If strand terminates, stop strand, preserve unit strand time number.
3. slab scale according to claim 2 surveys long method, it is characterised in that described to judge whether strand terminates, bag
Include：
The afterbody base head position of detection slab in real time；
If at the end of the current one strand time, detect that the afterbody base head position and current end position are inconsistent, then
Strand does not terminate, continues strand operation；Or
If at the end of the current one strand time, detect that the afterbody base head position is consistent with current end position, then cast
Base terminates.
4. slab scale according to claim 1 surveys long method, it is characterised in that described to obtain each unit strand time
Instantaneous strand speed during beginning includes：
Obtain each unit strand time motor for withdrawal ＆ straightening machine instant rotation speed and motor for withdrawal ＆ straightening machine running frequency when starting；
Instantaneous strand speed is obtained according to the instant rotation speed and the running frequency.
5. slab scale according to claim 4 surveys long method, it is characterised in that the acquisition motor for withdrawal ＆ straightening machine instantaneously turns
Dynamic speed includes：
Obtain the rated speed of motor for withdrawal ＆ straightening machine and the speed reducing ratio of motor；
Obtain withdrawal straightening machine straightening roller diameter；
The motor for withdrawal ＆ straightening machine instant rotation speed is obtained according to the rated speed, the speed reducing ratio and the straightening roller diameter
Degree.
6. a kind of slab scale length measurement system, it is characterised in that the system includes：
Presetting module, for presetting the unit strand time；
First acquisition module, terminate required unit strand time number for obtaining strand；
Second acquisition module, for obtain each unit strand time start when instantaneous strand speed；
Processing module, instantaneous strand speedometer when each unit strand time for being obtained according to the acquisition module starts
The strand length of each unit strand time is calculated, the strand length of each unit strand time is added and obtained slab length.
7. slab scale length measurement system according to claim 6, it is characterised in that first acquisition module includes：
Counting unit, for when each unit strand time starts, tiring out to the unit strand time number needed for strand
Add；
Judging unit, for judging whether strand terminates when terminating current one strand time strand.
8. slab scale length measurement system according to claim 7, it is characterised in that the judging unit includes：
Detection sub-unit, for detecting the afterbody base head position of slab in real time；
Judgment sub-unit, for judging terminating the current one strand time, whether current end position is single with detection
The afterbody base head position consistency that member detects.
9. slab scale length measurement system according to claim 6, it is characterised in that second acquisition module includes：
Acquiring unit, for obtaining motor for withdrawal ＆ straightening machine instant rotation speed and motor for withdrawal ＆ straightening machine running frequency；
Processing unit, for handling the instant rotation speed and the running frequency that the acquiring unit obtains, obtain wink
When strand speed.
10. slab scale length measurement system according to claim 9, it is characterised in that the acquiring unit includes：
Subelement is obtained, for obtaining the rated speed of motor for withdrawal ＆ straightening machine, the speed reducing ratio of motor and withdrawal straightening machine straightening roller diameter；
Subelement is handled, the rated speed, the speed reducing ratio and the straightening obtained for handling the acquisition subelement
Roller diameter obtains the motor for withdrawal ＆ straightening machine instant rotation speed.
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| CN107378188A (en) * | 2017-06-02 | 2017-11-24 | 内蒙古包钢钢联股份有限公司 | A kind of strand method for scaling |
| CN107971347A (en) * | 2017-10-20 | 2018-05-01 | 唐山中厚板材有限公司 | The thick online hot long method of survey of hot rolled plate in one kind |
| CN107931554B (en) * | 2017-11-30 | 2020-07-10 | 山信软件股份有限公司 | Continuous casting billet positioning calculation method |
| CN107941186A (en) * | 2017-12-13 | 2018-04-20 | 山信软件股份有限公司 | A kind of displacement sensing system |
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| JPH0732110A (en) * | 1993-07-21 | 1995-02-03 | Nippon Steel Corp | Method for cutting off cast slab |
| JPH0919749A (en) * | 1995-07-06 | 1997-01-21 | Nippon Steel Corp | Method for controlling cut-off of cast slab in continuous casting |
| CN101811182B (en) * | 2009-02-25 | 2012-05-30 | 宝山钢铁股份有限公司 | Process for online cut-to-length cutting production of continuous casting slabs for heavy plate mill |
| CN203862977U (en) * | 2013-12-30 | 2014-10-08 | 南阳汉冶特钢有限公司 | Slab continuous casting and cut length measuring device |
| CN104772443B (en) * | 2015-04-09 | 2017-07-14 | 田志恒 | A kind of continuous casting fixed-length length measurement system and method |
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