CN106311775A - Separate sub zone control method applicable to roll and disc-type cooling bed - Google Patents
Separate sub zone control method applicable to roll and disc-type cooling bed Download PDFInfo
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- CN106311775A CN106311775A CN201510386502.7A CN201510386502A CN106311775A CN 106311775 A CN106311775 A CN 106311775A CN 201510386502 A CN201510386502 A CN 201510386502A CN 106311775 A CN106311775 A CN 106311775A
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Abstract
The invention discloses a separate sub zone control method applicable to a roll and disc-type cooling bed, belonging to the field of control. The cooling bed is the roll and disc-type cooling bed; the working zone of the whole cooling bed is divided into a plurality of sub zones; the cooling bed is subjected to partitioned detection; the number of steel plates which can be accommodated by each separate zone is calculated by a PLC program according to the width of supplied steel plates; models are set according to material distribution conditions at target zones of the cooling bed and cooling temperature required by the steel plates; and the operation modes of the zones are automatically selected, so that the utilization rate of the cooling bed is improved. By utilizing the device, the steel plates of different cooling models during a thermal treatment process can be simultaneously subjected to classified cooling treatment; the phenomenon of a low utilization rate caused by integral control of a conventional cooling bed can be effectively avoided; the waiting time for the steel plates to be loaded to or unloaded from the cooling bed is reduced; and therefore the steel plates of different specifications can be cooled on the cooling bed according to the respective cooling temperature control models, so that the utilization rate and control flexibility of the cooling bed are greatly improved. The separate sub zone control method can be widely applied to the field of cooling control of the cooling bed during a large-scale continuous production process of a thermal treatment line.
Description
Technical field
The invention belongs to control field, particularly relate to a kind of cold during heat-treatment lines large-scale continuous production
Bed control method for lowering temp.
Background technology
In the production process of applicant's administrative Thick Plate Plant heat-treatment lines, thermally treated stove heating or quenched after steel
Plate carries out natural cooling on cold bed, enters back into collection or transportation processing after temperature meets requirement.
Cold bed, as heat-treatment furnace outlet device, forms an independent heat treatment with heat-treatment furnace and access device thereof
Production line, the technique such as aligning of rear operation then belongs to another independent production line, and therefore steel plate is on cold bed
Natural cooling (air cooling) time and collection temperature there is no strict technology requirement.
This cold bed is step motion control pattern, is hydraulically operated the slow single stepping of step rate and advances, thus by cold bed
Steel plate transport forward (shown in Fig. 1, Fig. 2).
The feature of this automatic control mode is:
1, transporting direction is single: the periodic movement by step rate of the steel plate on cold bed, before can only automatically carrying out
Enter transport；
2, control mode is simple: limited by frame for movement, cold bed must as overall and cannot partition running, i.e.
When step rate advances, all steel plates on cold bed carry out transmission of advancing simultaneously；
3, chilling temperature cannot be controlled: steel plate enters, L1 automatic control system (is looked forward to applicant when transporting cold bed
Industry, the 1 grade of PLC controlled for basic automatization traditionally is called L1, for 2 grades of PLC of process management is
L2, lower same) use traditional " first in first out " lining up mode, if reach the chilling temperature of requirement entirely by operating
Personnel confirm, control without automated procedure computer, more cannot realize Temperature Control Model.
Owing to the cold bed of hot rolling 2050 heat-treatment lines is online equipment, connect heat-treatment furnace and cold straightener, steel plate
Haulage time on cold bed is controlled by cooling Temperature control model.Additionally, due to heat-treatment lines process-intensive, for often
The Technology for Heating Processing planting specification steel plate is had nothing in common with each other, thus the cooling to it requires the most different.Tradition is single
Queue-type cold bed controls to meet actual process demand.
Being on 08 21st, 2013 at authorized announcement date, Authorization Notice No. is that the China of CN203140457U is practical
In new patent, disclose " a kind of multistage cold bed master & slave control system ", it include cold bed body, host computer,
Programmable controller, cold bed principal and subordinate's stepping are cross-device, cold bed body principal and subordinate's stepping cross-location detection device, principal and subordinate
Driving motor, principal and subordinate's speed reducer device, principal and subordinate's transmission control device, host computer connects programmable controller I/O
Module, main transmission control device by main transmission communication cable be sequentially connected with main driving motor, main transmission deceleration device,
The main stepping of cold bed is cross-device, cold bed body master enters cross-location detection device, and cold bed body master enters cross-location detection device
Programmable controller is connected, from transmission control device by from transmission communication cable successively by main transmission holding wire
Connect from driving motor, cold bed body cross-device from stepping from transmission decelerating device, cold bed from entering cross-location detection
Device, cold bed body is from entering cross-location detection device by from actuating signal connection programmable controller.Should
Technical scheme is primarily adapted for use in the master-slave synchronisation control realizing cold bed multistage.
It is on 01 29th, 2014 in publication date, the Chinese invention patent application of Publication No. CN103537492A
In, disclosing " a kind of synchronisation control means for multistage cold bed ", this technology is installed in the programmable controller
Angle synchronization module (1), angle synchronization module (1) reads actual speed value from actuating device, calculates cold bed section
The actual anglec of rotation that actual angle α 1 and α n, α 1 is principal piece cold bed that eccentric rotates, α n is that secondary segment is cold
The actual anglec of rotation of bed；The actual angle α n of each secondary segment all compares with the actual angle α 1 of principal piece, if poor
Value Δ α≤1%, then think that angle synchronizes；If difference DELTA α > 1%, then by difference by pi regulator output conversion
Become speed to add given Nadd to be added to the input of self actuator velocity actuator, participate in speed closed loop and adjust
Solve；The cooling bed device of described multistage cold bed refer to mechanically to disconnect more than two sections；First multistage cold bed is defined as
N section, n is the integer of >=2, and the first paragraph cold bed in n section cold bed is defined as principal piece cold bed, remaining cold bed section
For secondary segment cold bed；The rotating speed Nset of technique initialization is sent to the speed regulator of every section of cooling bed transmission gear by PLC
Input, the principal velocity as each actuating device gives；Principal piece cold bed is controlled by conventional Speed closed-link system,
Secondary segment cold bed calculates speed Nadd by the angle synchronization module (1) in PLC, and Nadd is sent to self transmission dress
Put the additional given input of speed regulator, give as from the addition speed of figure, superpose with principal velocity,
Jointly complete the speed regulation of this section of cold bed.This technical scheme is mainly concerned with the coaxial cold bed of multistage on-mechanical in multistep
Synchronization Control under continuous operation mode.
In actual applications, there is not yet after hot rolling heat treatment heating technique, it is adaptable to single area independently controls,
The cold bed control method for lowering temp of the temperature drop demand realizing different steel plate can be met simultaneously.
Summary of the invention
The technical problem to be solved is to provide a kind of independent partitions controlling party being applicable to roller-plate cold bed
Method, it uses the control mode that whole cold bed working region is decomposed into several independent partitions, according to supplied materials not
With requiring to realize the Temperature control model of setting, and possess the functions such as independent advance, swing, it is adaptable to roller-plate machinery is tied
The motor of structure drives cold bed, meets the cold bed cooling control model of the temperature drop demand realizing different steel plate simultaneously, is one
Plant the utilization rate that can be greatly enhanced cold bed and the control method controlling motility.
A kind of independent partitions control method being applicable to roller-plate cold bed of offer is provided, including
Cold bed and for control cold bed run PLC, it is characterized in that:
Described cold bed is roller-plate cold bed；
Described roller-plate cold bed includes several power transmission shaft, the interlaced arrangement multiple roller dishes on every power transmission shaft, position
Gear motor, speed encoder and array photoelectric sensor in power transmission shaft one end；
Wherein, for each power transmission shaft, described roller dish is sleeved on power transmission shaft and is supported by carrying roller, institute
The gear motor band action roller dish drive axis stated, described roller dish rotates with power transmission shaft on carrying roller；
The speed encoder that is arranged on gear motor and be arranged on the photoelectric sensor between two root power transmission shafts,
Realize respectively roller disc speed degree and the detection of steel plate physical location and control；
Described roller-plate cold bed drives power transmission shaft band action roller dish to operate by the logic control of PLC automatization, completes to treat
The transport in cold bed region of the cold steel plate and location action；
Described independent partitions control method, is decomposed into several subregion by whole cold bed working region, uses photoelectric transfer
Sensor carries out Subarea detecting to cold bed, by PLC program according to the width of supplied materials steel plate, calculates on each isolated area
Open ended steel plate number, and combine the cloth situation of cold bed target area and the chilling temperature setting mould of steel plate needs
Type, automatically selects the operational mode in this region, to improve the utilization rate of cold bed；
Described independent partitions control method, is divided into several small-sized cooled regions, each small-sized cooling by cold bed
Region is each provided with driving the operation operating function treating that cold steel plate advances, retreats, stops and swinging；
Described independent partitions control method, for each block plate with the time of coming out of the stove for initial time point；To come out of the stove
Steel billet temperature is that initial temperature carries out computation of Period, and steel billet temperature of calculating per minute, by the control picture of PLC
Face, can intuitively show cold bed steel billet temperature, when steel plate runs to the outlet of cold bed body, can obtain now steel plate
Actual measurement temperature, provides reference for steel plate the need of blanking；
Described independent partitions control method, the pattern using independent partitions to control, eliminate the upper and lower cold bed of steel plate
Time impact on this running body of cold bed, also make the steel plate of different size follow each cooling Temperature control model merit on cold bed
Can be achieved, be greatly enhanced the utilization rate of cold bed and control motility.
Concrete, described operational mode includes advancing, swing, stop or swinging.
Concrete, described independent partitions control method, whole cold bed working region is decomposed into several subregion, presses
According to following control method to the equipment in each subregion and treat cold steel plate carry out run control:
1) according to when the specification information of front spring, first district's roller dish advances and runs, utilizes photoelectric sensor to detect
Whether steel plate forward position enters the firstth district, utilizes the detection of the velocity sensor on gear motor and is existed by PLC calculating steel plate
Physical location in firstth district, is accurately positioned in first district's back edge position by steel plate；
2) PLC receive after a block plate specification information, it is determined whether with when front spring specification identical: if
Different size, it is impossible to use identical cooling Temperature control model, the firstth district enters next step flow process；If same size,
Identical cooling Temperature control model can be used to cool down, and PLC need to calculate when front spring comes for first district's space occupancy rate
A block plate after determining whether to accommodate, if space is enough, after the firstth district waits, a block plate enters, and returns
Back makees cycle criterion；If insufficient space, the firstth district enters next step flow process；
3) after the firstth district completes isolated area feeding flow process, need the steel plate transport in one's respective area to second
District, the most first judges whether the secondth district is empty；If the secondth district is vacant, then first district's roller dish advance runs, by all steel
After plate is transported to the secondth district, when photoelectric sensor detects fully out firstth district of steel plate, the firstth district is marked by PLC
It is designated as sky, waits next service cycle；If second district's non-NULL, PLC need to judge when front spring cool time whether
Arriving the setting of temperature control system, setting if having reached cooling, this district's roller dish stops waiting that second district's steel plate empties；If
Not yet reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges
Whether the secondth district is empty, and carry out subsequent control according to judged result；
4) after the secondth district completes isolated area feeding flow process, need the steel plate transport in one's respective area to the 3rd
District, the most first judges whether the 3rd district is empty；If the 3rd district is vacant, then second district's roller dish advance runs, by all steel
After plate is transported to the 3rd district, when photoelectric sensor detects fully out secondth district of steel plate, the secondth district is marked by PLC
It is designated as sky, waits next service cycle；If the 3rd district's non-NULL, PLC need to judge when front spring cool time whether
Arriving the setting of temperature control system, setting if having reached cooling, this district's roller dish stops waiting that the 3rd district's steel plate empties；If
Not yet reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges
Whether the 3rd district is empty, and carry out subsequent control according to judged result；
5) after the 3rd district completes isolated area feeding flow process, need the steel plate transport in one's respective area to blanking
District, then PLC first judges whether discharging area is empty, if discharging area is vacant, then the 3rd district's roller dish advance runs, by institute
After having steel plate to be transported to discharging area, when photoelectric sensor detects fully out 3rd district of steel plate, PLC is by the 3rd
District is labeled as sky, waits next service cycle；If discharging area non-NULL, PLC need to judge the cool time when front spring
Whether arriving the setting of temperature control system, setting if having reached cooling, this district's roller dish stops waiting that discharging area steel plate empties；
If not yet reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again sentences
Whether disconnected discharging area is empty, and carry out subsequent control according to judged result；
When described until cold steel plate fully out 3rd district time, steel plate whole service on cold bed controls process knot
Bundle.
Further, the described line style being made up of several photoelectric sensors detection region, in conjunction with velocity sensor pair
The detection of steel plate advance traffic direction, can quickly confirm whether steel plate enters the firstth district, the secondth district and the 3rd district；And
The line style detection region being made up of several photoelectric sensors, in conjunction with the velocity sensor inspection to steel plate advance traffic direction
Survey, it is possible to quickly confirm whether steel plate leaves the firstth district, the secondth district and the 3rd district.
Further, the described independent partitions control method being applicable to roller-plate cold bed, it is possible to if realize simultaneously with
The cold bed of dry cooling zone composition independently controls；According to the difference of steel plate supplied materials width, if each cooling zone can accommodate
The steel plate that dry block specifications is identical；Steel plate enters or transports each cooled region and carried out material by photoelectric sensor detection signal
Follow the tracks of.
Further, the described independent partitions control method being applicable to roller-plate cold bed, according to observed temperature and meter
Calculating temperature deviation, obtain the steel plate Temperature control model change calculations formula when front spring, described steel plate Temperature control model becomes
Change computing formula and may be used for revising the warm extrusion die of the same follow-up steel plate of steel grade specification；
Described steel plate Temperature control model change calculations formula is as follows:
Wherein, Δ TAC is the variations in temperature of air cooling；
Tmk is t second later steel plate mean temperature；
Tmsk is that steel plate cooling starts temperature；
T is air cooling time；
H is thickness of slab；
Em is radiance；
Α conv is pyroconductivity；
H0Thickness of slab for steel plate.
Further, the described independent partitions control method being applicable to roller-plate cold bed is the most right by this device
Different cooling jig steel plates in heat treatment process carry out cooling process of classifying, and can be prevented effectively from conventional cold bed entirety control
The utilization rate being manufactured into is low, reduces the waiting time of the upper and lower cold bed of steel plate.
Compared with the prior art, the invention have the advantage that
1. using motor to drive the design of roller-plate structure, equipment is small and exquisite and performance of ventilating good, is particularly well-suited to thin rule
The cooling of lattice steel plate；
2. use independent partitions to control, impact on this running body of cold bed when eliminating the upper and lower cold bed of steel plate, also
The steel plate making different size is followed each cooling Temperature control model function on cold bed and is achieved, and is greatly enhanced cold bed
Utilization rate and control motility.
Accompanying drawing explanation
Fig. 1 is the arrangement schematic diagram of tradition walking beam cooler；
Fig. 2 is the control flow schematic diagram of tradition walking beam cooler；
Fig. 3 is the technique of the present invention and control requires flow chart；
Fig. 4 (a)～the frame for movement schematic diagram that (c) is technical solution of the present invention；
Fig. 5 is the logic control flow process block diagram of technical solution of the present invention.
Fig. 6 is that the independent partitions of inventive technique scheme controls cold bed control schematic diagram.
In figure, 1 is roller dish, and 2 is power transmission shaft, and 3 is carrying roller, and 4 is gear motor, and 5 is speed encoder, 6
For photoelectric sensor.
Detailed description of the invention
The present invention will be further described with embodiment below in conjunction with the accompanying drawings.
After steel plate after hot rolling mill heat-treatment lines, the heating of thermally treated stove needs to be cooled to uniform temperature on cold bed
The process of subsequent processing can be carried out.Owing to traditional cold bed control mode is normalized " with entering with stopping " pattern,
The Temperature control model of different size steel plate almost cannot be realized.Additionally, due to cold bed run action is unified, once have
When steel plate needs to enter or transport, whole cold bed all needs to wait for carrying out next step after this process completes and controls,
Bigger waste is existed for cold bed space availability ratio.
For the problems referred to above, this programme designs a kind of independent partitions control method being applicable to roller-plate cold bed.The party
Method uses photoelectric sensor that cold bed is carried out Subarea detecting, by PLC program according to the width of supplied materials steel plate, calculates every
Open ended steel plate number on individual isolated area, and combine the cloth situation of cold bed target area and the cold of steel plate needs
But temperature setting model, automatically selects this area operation pattern: advance, swing or stop, and meets simultaneously and realizes not
With the cold bed control method for lowering temp of the temperature drop demand of steel plate, it is greatly enhanced the utilization rate of cold bed and controls the control of motility
Method processed.
The main technique of the technical program and control require that flow process is as shown in Figure 3.
In Fig. 4 (a)～(c), the cold bed body of the technical program is mainly made up of the roller dish of interlaced arrangement.Device
Main by some roller dishes 1, power transmission shaft 2, carrying roller 3, gear motor 4, speed encoder 5 and photoelectric sensor
Composition.Roller dish 1 is sleeved on power transmission shaft 2 and is supported by carrying roller 3.Gear motor 4 band action roller dish power transmission shaft
2 rotate, and roller dish 1 rotates with power transmission shaft 2 on carrying roller 3.Speed encoder 6 and laser range finder are respectively
Realize roller disc speed degree and the detection of steel plate physical location and control.Power transmission shaft band is driven by automatization's logic control
Action roller dish operates, and completes cold bed transport and location action.
The cold bed that the control mode of the technical program can realize so that several cooling zones form simultaneously independently controls；Root
According to the difference of steel plate supplied materials width, each cooling zone can accommodate the steel plate that some block specifications are identical；Steel plate enters or fortune
Go out each cooled region and carried out material tracking by photoelectric sensor detection signal.
1. control flow
Cold bed is divided into several small-sized cooled regions by this control method, be each provided with advancing, retreat, stop with
And the function swung.As a example by cold bed is divided into three cooled regions (being called for short the firstth district, the secondth district and the 3rd district),
Described control flow is:
A) according to when the specification information of front spring, first district's roller dish advances and runs, and utilizes photoelectric sensor to detect steel plate
Whether forward position enters the firstth district, utilizes the velocity sensor detection on gear motor and is calculated steel plate first by PLC
Physical location in district, is accurately positioned in the first district's tailing edge (100mm-400mm) position by steel plate.
B) receive after a block plate specification information, it is determined whether with when front spring specification identical: if different size,
Cannot use identical cooling Temperature control model, the firstth district enters next step flow process.If same size, can use identical
Cooling Temperature control model cools down, and PLC need to calculate when front spring for first district's space occupancy rate to determine whether energy
Enough accommodate after a block plate, if space is enough, after the firstth district waits, a block plate enters, and returns back and follow
Ring judges；If insufficient space, the firstth district enters next step flow process.
C) after the firstth district completes isolated area feeding flow process, need the steel plate transport in one's respective area to the secondth district,
The most first judge whether the secondth district is empty.If the secondth district is vacant, then first district's roller dish advance runs, and is transported by all steel plates
After delivering to the secondth district, when photoelectric sensor detects fully out firstth district of steel plate, the firstth district is labeled as by PLC
Sky, waits next service cycle.If second district's non-NULL, PLC need to judge when whether the cool time of front spring arrives
The setting of temperature control system, sets if having reached cooling, and this district's roller dish stops waiting that second district's steel plate empties；If not yet
Reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges second
Whether district is empty, and carry out subsequent control according to judged result.
D) after the secondth district completes isolated area feeding flow process, need the steel plate transport in one's respective area to the 3rd district,
The most first judge whether the 3rd district is empty.If the 3rd district is vacant, then second district's roller dish advance runs, and is transported by all steel plates
After delivering to the 3rd district, when photoelectric sensor detects fully out secondth district of steel plate, the secondth district is labeled as by PLC
Sky, waits next service cycle.If the 3rd district's non-NULL, PLC need to judge when whether the cool time of front spring arrives
The setting of temperature control system, sets if having reached cooling, and this district's roller dish stops waiting that the 3rd district's steel plate empties；If not yet
Reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges the 3rd
Whether district is empty, and carry out subsequent control according to judged result.
E) after the 3rd district completes isolated area feeding flow process, need the steel plate transport in one's respective area to discharging area,
The most first judge whether discharging area is empty.If discharging area is vacant, then the 3rd district's roller dish advance runs, and is transported by all steel plates
After delivering to discharging area, when photoelectric sensor detects fully out 3rd district of steel plate, the 3rd district is labeled as by PLC
Sky, waits next service cycle.If discharging area non-NULL, PLC need to judge when whether the cool time of front spring arrives
The setting of temperature control system, sets if having reached cooling, and this district's roller dish stops waiting that discharging area steel plate empties；If not yet
Reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges blanking
Whether district is empty, and carry out subsequent control according to judged result.
When fully out 3rd district of steel plate, the steel plate whole control process on cold bed terminates.
Above-mentioned automatic control flow chart is as shown in Figure 5.
2. signal detection:
In figure 6, as a example by three cooled regions, by photoelectric sensor LS01-LS02-LS03,
LS11-LS12-LS13 and LS21-LS22-LS23 composition line style detection region, in conjunction with velocity sensor PG01,
The detection of PG02 and PG03 advance traffic direction, can quickly confirm whether steel plate enters the firstth district, the secondth district and
3rd district；And the line style detection of LS11-LS12-LS13, LS21-LS22-LS23 and LS31-LS32-LS33 composition
Region, in conjunction with the detection of velocity sensor PG01, PG02 and PG03 advance traffic direction, it is possible to quickly confirm steel
Whether plate leaves the firstth district, the secondth district and the 3rd district.
The line being made up of photoelectric sensor LS01-LS02-LS03, LS11-LS12-LS13 and LS21-LS22-LS23
Type detection region, in conjunction with the detection in velocity sensor PG01, PG02 and PG03 fall back direction, can be the most true
Recognize whether steel plate leaves the firstth district, the secondth district and the 3rd district；And LS11-LS12-LS13, LS21-LS22-LS23
And the line style detection region of LS31-LS32-LS33 composition, in conjunction with velocity sensor PG01, PG02 and PG03
The detection of advance traffic direction, it is possible to quickly confirm whether steel plate enters the firstth district, the secondth district and the 3rd district.
(3) Process Control Principle
According to technological requirement, when the steel plate after coming out of the stove need to be cooled to uniform temperature on cold bed could blanking, the most right
In each block plate with the time of coming out of the stove for initial time point；To come out of the stove, steel billet temperature was counted for the initial temperature cycle of carrying out
Calculate, steel billet temperature of calculating per minute, by picture, can intuitively show cold bed steel billet temperature, when steel plate runs
To cold bed body export time, can obtain now steel plate actual measurement temperature, for steel plate the need of blanking provide ginseng
Examine.PLC, according to observed temperature and calculating temperature deviation, obtains the steel plate Temperature control model when front spring, described steel
Plate Temperature control model can revise the warm extrusion die of the same follow-up steel plate of steel grade specification.
Described steel plate Temperature control model (also known as air cooling model) change calculations formula is as follows:
The variations in temperature (DEG C) of Δ TAC air cooling；
The steel plate mean temperature (° K) that the Tmk t second is later；
The cooling of Tmsk steel plate starts temperature (° K)；
T air cooling time；
H thickness of slab；
Em radiance；
α conv pyroconductivity 7.5 (Kcal/m2hr℃)；
H0Thickness of slab.
Remaining coefficient ai、biDetermination relevant to the one-tenth-value thickness 1/10 of steel plate, concrete value can refer to following table:
Embodiment:
Example: heat treatment produces the steel plate of three kinds of specifications, the mesh that its specification, the initial temperature come out of the stove, lower cold bed set
Mark chilling temperature and cool time respectively:
According to aforesaid steel plate Temperature control model (also known as air cooling model) understand, the steel plate A of three kinds of different sizes, B,
C needs with cool time the most unequal on cold bed, and meets relational expression: t1<t2<t3.Therefore this technical side is being used
During case, can carry out in being respectively placed in zones of different by the steel plate of three kinds of different sizes according to aforesaid control flow chart
Independent cooling.
1, steel plate A transport on the cold bed of independent partitions controls:
1) after the first block plate A is completely into the firstth district, it is determined that a rear block plate specification with when front spring specification phase
With and isolated area in remaining space can accommodate steel plate again, the firstth district waits and being transported to cold bed by a rear block plate,
Simultaneously by when the information that the information updating of front spring is the second block plate A.
2) after the second block plate A is completely into the firstth district, it is determined that a rear block plate specification with when front spring specification phase
With and isolated area in remaining space can accommodate steel plate again, the firstth district waits and being transported to cold bed by a rear block plate,
Simultaneously by when the information that information updating is the 3rd block plate A of front spring.
3) after the 3rd block plate A is completely into the firstth district, it is determined that a rear block plate specification with when front spring specification not
With, and the secondth district be empty, and the firstth district, the secondth district is the most overall advances, by all steel plate A transport in the firstth district
To the secondth district.
4) when the 3rd fully out firstth district of block plate A, the firstth district is labeled as sky, it is allowed to after it accepts again
Continuous steel plate.Simultaneously, it is judged that the 3rd district is empty, the secondth district, the most overall advance in the 3rd district, by the institute in the secondth district
Steel plate A is had to be transported to the 3rd district.
5) when the 3rd fully out secondth district of block plate A, the secondth district is labeled as sky, it is allowed to after it accepts again
Continuous steel plate.Meanwhile, judge whether the surface temperature of steel plate A reaches the setting temperature of lower cold bed according to on-the-spot temperature element
Degree, if not up to, the 3rd district enters independent weave mode, again carries out temperature inspection at the end of each hunting period
Survey, until observed temperature meets sets requirement.
6) when the steel plate A observed temperature in the 3rd district meet setting require time, it is judged that cold bed blanking region is empty, then
Steel plate A block-by-block blanking in 3rd district, until the 3rd fully out 3rd district of block plate, the 3rd district is labeled as sky,
It is allowed again to accept follow-up steel plate.
2, steel plate B transport on the cold bed of independent partitions controls:
1) after the first block plate B is completely into the firstth district, it is determined that a rear block plate specification with when front spring specification phase
With and isolated area in remaining space can accommodate steel plate again, the firstth district waits and being transported to cold bed by a rear block plate,
Simultaneously by when the information that the information updating of front spring is the second block plate B.
2) after the second block plate B is completely into the firstth district, it is determined that a rear block plate specification with when front spring specification not
With, and the secondth district be empty, and the firstth district, the secondth district is the most overall advances, by all steel plate B transport in the firstth district
To the secondth district.
3) when the second fully out firstth district of block plate B, the firstth district is labeled as sky, it is allowed to after it accepts again
Continuous steel plate.Simultaneously, it is judged that the 3rd district is not for being not up to the cooling set by lower cold bed empty and steel plate B cool time
Time t2, the secondth district enters independent weave mode, again carries out the 3rd room, district inspection at the end of each hunting period
Survey and comparison cool time.
4), when if having reached setting cool time of steel plate B, the 3rd district is empty not yet, the secondth district enters and independent stops mould
Formula, waits that the 3rd room, district mark occurs.
5) when the 3rd district occurs for empty mark, the secondth district, the most overall advance in the 3rd district, by the institute in the secondth district
Steel plate B is had to be transported to the 3rd district.
6) when the second fully out secondth district of block plate B, the secondth district is labeled as sky, it is allowed to after it accepts again
Continuous steel plate.Meanwhile, judge whether the surface temperature of steel plate B reaches the setting temperature of lower cold bed according to on-the-spot temperature element
Degree, if not up to, the 3rd district enters independent weave mode, again carries out temperature inspection at the end of each hunting period
Survey, until observed temperature meets sets requirement.
7) when the steel plate B observed temperature in the 3rd district meet setting require time, it is judged that cold bed blanking region is empty, then
Steel plate B block-by-block blanking in 3rd district, until the 3rd fully out 3rd district of block plate, the 3rd district is labeled as sky,
It is allowed again to accept follow-up steel plate.
3, steel plate C transport on the cold bed of independent partitions controls:
1) after the first block plate C is completely into the firstth district, it is determined that in isolated area, remaining space cannot accommodate again
Steel plate, simultaneously, it is judged that when the secondth district is not up to the cooling set by lower cold bed for empty and steel plate C cool time
Between t3, the firstth district enters independent weave mode, again carries out the second room, district detection at the end of each hunting period
And comparison cool time.
2) if having reached setting t cool time of steel plate C3And during the secondth district sky not yet, the firstth district enters independent stopping
Pattern, waits that the second room, district mark occurs.
3) when the secondth district occurs for empty mark, the firstth district, the most overall advance in the secondth district, by the steel in the firstth district
Plate C is transported to the secondth district.
4) when fully out firstth district of steel plate C, the firstth district is labeled as sky, it is allowed to it accepts follow-up steel plate again.
Simultaneously, it is judged that the 3rd district not cool time set by empty and steel plate C cool time the most lower cold bed, the
2nd district enter independent weave mode, when again carrying out the 3rd room, district detection and cooling at the end of each hunting period
Between comparison.
5), when if having reached setting cool time of steel plate C, the 3rd district is empty not yet, the secondth district enters and independent stops mould
Formula, waits that the 3rd room, district mark occurs.
6) when the 3rd district occurs for empty mark, the secondth district, the most overall advance in the 3rd district, by the steel in the secondth district
Plate C is transported to the 3rd district.
7) when fully out secondth district of steel plate C, the secondth district is labeled as sky, it is allowed to it accepts follow-up steel plate again.
Meanwhile, judge whether the surface temperature of steel plate C reaches the design temperature of lower cold bed, if not according to on-the-spot temperature element
Reaching, the 3rd district enters independent weave mode, again carries out temperature detection at the end of each hunting period, until
Observed temperature meets setting requirement.
8) when the steel plate C observed temperature in the 3rd district meet setting require time, it is judged that cold bed blanking region is empty, then
Steel plate C block-by-block blanking in 3rd district, until fully out 3rd district of steel plate C, the 3rd district is labeled as sky, it is allowed to
It accepts follow-up steel plate again.
Additionally, in order to preferably utilize this technology, the length according to steel plate cool time when actual heat treatment produces
Short optimization production organization mode: during steel loading, the steel plate short cool time is loaded in heat-treatment furnace in advance and heat,
Cool time length steel plate after fill.When cooling down on cold bed after steel plate is come out of the stove, cool time, the steel plate of length could
Make full use of the isolated area at its place, do not affect and carry out independently swinging cooling under the operation premise of cold bed loading and unloading,
Effectively strengthen the utilization rate of cold bed.
Owing to present invention employs the control mode that whole cold bed working region is decomposed into several independent partitions, root
According to the different Temperature control models requiring to realize setting of supplied materials, and possess the functions such as independent advance, swing, it is adaptable to roller
The motor of disk-type mechanical structure drives cold bed, is particularly well-suited to heat-treatment lines region, is particularly well-suited to heat-treatment lines district
Different cooling jig steel plates in heat treatment process are carried out cooling process of classifying simultaneously, can have by territory by this device
The utilization rate that effect avoids conventional cold bed entirety to control to cause is low, reduces the waiting time of the upper and lower cold bed of steel plate, tool
There is bigger economic promotional value.
The method can be widely used in the cold bed cooling control field during heat-treatment lines large-scale continuous production.
Claims (7)
1. it is applicable to an independent partitions control method for roller-plate cold bed, runs including cold bed with for controlling cold bed
PLC, it is characterized in that:
Described cold bed is roller-plate cold bed；
Described roller-plate cold bed includes several power transmission shaft, the interlaced arrangement multiple roller dishes on every power transmission shaft, position
Gear motor, speed encoder and array photoelectric sensor in power transmission shaft one end；
Wherein, for each power transmission shaft, described roller dish is sleeved on power transmission shaft and is supported by carrying roller, institute
The gear motor band action roller dish drive axis stated, described roller dish rotates with power transmission shaft on carrying roller；
The speed encoder that is arranged on gear motor and be arranged on the photoelectric sensor between two root power transmission shafts,
Realize respectively roller disc speed degree and the detection of steel plate physical location and control；
Described roller-plate cold bed drives power transmission shaft band action roller dish to operate by the logic control of PLC automatization, completes to treat
The transport in cold bed region of the cold steel plate and location action；
Described independent partitions control method, is decomposed into several subregion by whole cold bed working region, uses photoelectric transfer
Sensor carries out Subarea detecting to cold bed, by PLC program according to the width of supplied materials steel plate, calculates on each isolated area
Open ended steel plate number, and combine the cloth situation of cold bed target area and the chilling temperature setting mould of steel plate needs
Type, automatically selects the operational mode in this region, to improve the utilization rate of cold bed,
Described independent partitions control method, is divided into several small-sized cooled regions, each small-sized cooling by cold bed
Region is each provided with driving the operation operating function treating that cold steel plate advances, retreats, stops and swinging；
Described independent partitions control method, for each block plate with the time of coming out of the stove for initial time point；To come out of the stove
Steel billet temperature is that initial temperature carries out computation of Period, and steel billet temperature of calculating per minute, by the control picture of PLC
Face, can intuitively show cold bed steel billet temperature, when steel plate runs to the outlet of cold bed body, can obtain now steel plate
Actual measurement temperature, provides reference for steel plate the need of blanking；
Described independent partitions control method, the pattern using independent partitions to control, eliminate the upper and lower cold bed of steel plate
Time impact on this running body of cold bed, also make the steel plate of different size follow each cooling Temperature control model merit on cold bed
Can be achieved, be greatly enhanced the utilization rate of cold bed and control motility.
2., according to the independent partitions control method being applicable to roller-plate cold bed described in claim 1, it is characterized in that institute
The operational mode stated includes advancing, swing, stop or swinging.
3., according to the independent partitions control method being applicable to roller-plate cold bed described in claim 1, it is characterized in that institute
The independent partitions control method stated, is decomposed into several subregion by whole cold bed working region, according to following control method
To the equipment in each subregion and treat cold steel plate carry out run control:
A. according to when the specification information of front spring, first district's roller dish advances and runs, and utilizes photoelectric sensor to detect steel plate
Whether forward position enters the firstth district, utilizes the velocity sensor detection on gear motor and is calculated steel plate first by PLC
Physical location in district, is accurately positioned in first district's back edge position by steel plate；
B.PLC receive after a block plate specification information, it is determined whether from when front spring specification identical: if different
Specification, it is impossible to use identical cooling Temperature control model, the firstth district enters next step flow process；If same size, can adopt
Cooling down with identical cooling Temperature control model, PLC need to calculate when front spring judges for first district's space occupancy rate
A block plate after whether can accommodating, if space is enough, after the firstth district waits, a block plate enters, and returns previous
Step makees cycle criterion；If insufficient space, the firstth district enters next step flow process；
C., after the firstth district completes isolated area feeding flow process, need the steel plate transport in one's respective area to the secondth district,
The most first judge whether the secondth district is empty；If the secondth district is vacant, then first district's roller dish advance runs, and is transported by all steel plates
After delivering to the secondth district, when photoelectric sensor detects fully out firstth district of steel plate, the firstth district is labeled as by PLC
Sky, waits next service cycle；If second district's non-NULL, PLC need to judge when whether the cool time of front spring arrives
The setting of temperature control system, sets if having reached cooling, and this district's roller dish stops waiting that second district's steel plate empties；If not yet
Reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges second
Whether district is empty, and carry out subsequent control according to judged result；
D., after the secondth district completes isolated area feeding flow process, need the steel plate transport in one's respective area to the 3rd district,
The most first judge whether the 3rd district is empty；If the 3rd district is vacant, then second district's roller dish advance runs, and is transported by all steel plates
After delivering to the 3rd district, when photoelectric sensor detects fully out secondth district of steel plate, the secondth district is labeled as by PLC
Sky, waits next service cycle；If the 3rd district's non-NULL, PLC need to judge when whether the cool time of front spring arrives
The setting of temperature control system, sets if having reached cooling, and this district's roller dish stops waiting that the 3rd district's steel plate empties；If not yet
Reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges the 3rd
Whether district is empty, and carry out subsequent control according to judged result；
E., after the 3rd district completes isolated area feeding flow process, need the steel plate transport in one's respective area to discharging area,
Then PLC first judges whether discharging area is empty, if discharging area is vacant, then the 3rd district's roller dish advance runs, by all steel
After plate is transported to discharging area, when photoelectric sensor detects fully out 3rd district of steel plate, the 3rd district is marked by PLC
It is designated as sky, waits next service cycle；If discharging area non-NULL, PLC need to judge when front spring cool time whether
Arriving the setting of temperature control system, setting if having reached cooling, this district's roller dish stops waiting that discharging area steel plate empties；If
Not yet reaching cooling to set, Ze Gai district starts weave mode, after completing a sub-region swing flow process, again judges
Whether discharging area is empty, and carry out subsequent control according to judged result；
When described until cold steel plate fully out 3rd district time, steel plate whole service on cold bed controls process knot
Bundle.
4., according to the independent partitions control method being applicable to roller-plate cold bed described in claim 1 or 3, it is special
Levying is the described line style being made up of several photoelectric sensors detection region, in conjunction with velocity sensor to steel plate advance fortune
The detection of line direction, can quickly confirm whether steel plate enters the firstth district, the secondth district and the 3rd district；And by several photoelectricity
The line style detection region of sensor composition, in conjunction with the velocity sensor detection to steel plate advance traffic direction, it is possible to fast
Speed confirms whether steel plate leaves the firstth district, the secondth district and the 3rd district.
5., according to the independent partitions control method being applicable to roller-plate cold bed described in claim 1, it is characterized in that
The described independent partitions control method being applicable to roller-plate cold bed, it is possible to simultaneously realize forming with several cooling zones
Cold bed independently control；According to the difference of steel plate supplied materials width, it is identical that each cooling zone can accommodate some block specifications
Steel plate；Steel plate enters or transports each cooled region and carried out material tracking by photoelectric sensor detection signal.
6., according to the independent partitions control method being applicable to roller-plate cold bed described in claim 1, it is characterized in that
The described independent partitions control method being applicable to roller-plate cold bed, according to observed temperature and calculating temperature deviation,
To when the steel plate Temperature control model of front spring, described steel plate Temperature control model change calculations formula may be used for revising same
The warm extrusion die of the follow-up steel plate of steel grade specification；
Described steel plate Temperature control model change calculations formula is as follows:
Wherein, Δ TAC is the variations in temperature of air cooling；
Tmk is t second later steel plate mean temperature；
Tmsk is that steel plate cooling starts temperature；
T is air cooling time；
H is thickness of slab；
Em is radiance；
Α conv is pyroconductivity；
H0Thickness of slab for steel plate.
7., according to the independent partitions control method being applicable to roller-plate cold bed described in claim 1, it is characterized in that institute
The independent partitions control method being applicable to roller-plate cold bed stated, is particularly well-suited to heat-treatment lines region, by this dress
Put and the different cooling jig steel plates in heat treatment process are carried out cooling process of classifying simultaneously, can be prevented effectively from conventional cold
The overall utilization rate controlling to cause of bed is low, reduces the waiting time of the upper and lower cold bed of steel plate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110404985A (en) * | 2019-08-29 | 2019-11-05 | 福建三钢闽光股份有限公司 | A kind of cold bed intelligence control system and its application method based on machine vision |
| CN113426841A (en) * | 2021-05-27 | 2021-09-24 | 广东韶钢松山股份有限公司 | Control method for automatically selecting material distribution mode of threaded bar stepping type cooling bed |
| CN114210745A (en) * | 2021-12-30 | 2022-03-22 | 重庆钢铁股份有限公司 | Automatic blanking method for cooling bed |
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| CN113426841A (en) * | 2021-05-27 | 2021-09-24 | 广东韶钢松山股份有限公司 | Control method for automatically selecting material distribution mode of threaded bar stepping type cooling bed |
| CN113426841B (en) * | 2021-05-27 | 2023-01-06 | 广东韶钢松山股份有限公司 | Control method for automatically selecting material distribution mode of threaded bar stepping type cooling bed |
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| CN114210745B (en) * | 2021-12-30 | 2023-08-29 | 重庆钢铁股份有限公司 | Automatic blanking method of cooling bed |
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