CN105886751A - Coordinated control system and method for plate temperature of cold-rolled hot-galvanized annealing furnace - Google Patents
Coordinated control system and method for plate temperature of cold-rolled hot-galvanized annealing furnace Download PDFInfo
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- CN105886751A CN105886751A CN201610227689.0A CN201610227689A CN105886751A CN 105886751 A CN105886751 A CN 105886751A CN 201610227689 A CN201610227689 A CN 201610227689A CN 105886751 A CN105886751 A CN 105886751A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
Abstract
The invention relates to a coordinated control system and method for the plate temperature of a cold-rolled hot-galvanized annealing furnace. The control system comprises the annealing furnace and a temperature detection module. The annealing furnace comprises a non-oxidizing furnace (NOF) section and a radiant tube furnace (RTF) section. The temperature detection module is used for detecting the furnace temperature TF_N of the NOF section, the real temperature Treal_N of a steel plate at an outlet of the NOF section, the furnace temperature TF_R of the RTF section and the real temperature Treal_R of a steel plate at an outlet of the RTF section. A temperature optimization and time setting module, a temperature difference detection module, an NOF section control module and an RTF section control module are further included. The plate temperature is controlled through the method of adjusting the flow of coal gas in real time to achieve the precision required by the technology, a mixed intelligent control strategy is adopted for achieving high-precision temperature control over the cold-rolled annealing furnace, the plate temperature control precision of the NOF section and the RTF section of the annealing furnace meets the technology requirement, fuel is introduced into the NOF section and the RTF section of the annealing furnace more reasonably, and therefore the utilization rate of the fuel is increased, the fuel cost is reduced, and the performance of the cold-rolled steel plates is greatly improved.
Description
Technical field
The present invention relates to the Technology field of cold rolling hot dip galvanizing annealing furnace, particularly relate to a kind of cold rolling hot dip
Zinc annealing furnace plate temperature coordinated control system and method.
Background technology
The superior function of cold-rolled steel sheet so that its demand is continuously increased by market, improves and produces steel plate
Qualification rate can effectively improve the market competitiveness of enterprise.
As it is shown in figure 1, in continuous annealing production line, cold rolling steel plate is welded on welding machine, clearly
Wash by after surface of steel plate ROLLING OIL seborrheic alopecia in region, in the heating region-soak zones-cooling of annealing furnace
Region-overaging region carries out a series of heat treatments of laser heating and cooling, as in figure 2 it is shown, for even
The target steel billet temperature change curve of continuous annealing.Through skin-pass, batch continuously and batch on anti-
Operation.Heating region middle and upper part is divided to arrange with lower part and is referred to as cylinder in the stove of furnace roller, steel plate root
Stove upper part is assigned to again to the guiding path of stove lower part by stove bottom according to what the rolling of this furnace bottom was formed.On road
The radial canal making coke oven gas combustion in inside it is provided with between footpath and path, and by radial canal to steel
Plate heats indirectly.
When batch change, the thickness of steel plate, width, annealing target temperature are also changes.For steel
The temperature of plate, using gas flow and steel plate transfer rate as controlled quentity controlled variable, is entered with heat time heating time by furnace temperature
Row controls, and owing to response is relatively slow, therefore cannot accomplish to follow the tracks of completely to transformation period.
The complex technical process of cold rolling hot dip galvanizing annealing furnace, has non-linear and close coupling etc. complicated special
Property, and in production process, due to the requirement difference to different steel plates, the operating process of annealing furnace is the most not
With, need to consider steel billet temperature, steel plate thickness and the speed etc. of unit, it is difficult to realize it high-precision
Control.
Iron and steel cold rolling hot dip galvanizing annealing furnace uses primary PLC cross limiting range PID to control to combine two grades of moulds at present
Type machine controls, but its effect is unsatisfactory, and temperature control speed, precision, adaptability cannot meet reality
Border Production requirement.
Summary of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, it is provided that a kind of cold rolling
Galvanizing annealing furnace plate temperature coordinated control system and method.
The technical scheme is that
According to an aspect of the invention, it is provided a kind of cold rolling hot dip galvanizing annealing furnace plate temperature is coordinated to control system
System, including annealing furnace and temperature detecting module, described annealing furnace includes scale-free heating furnace NOF section and spoke
Penetrating pipe heating furnace RTF section, described NOF section and RTF section are divided into multiple district, described temperature detecting module
For detecting NOF section furnace temperature TF_N, NOF section exit steel plate actual temperature Treal_N and RTF respectively
Section furnace temperature TF_R, RTF section exit steel plate actual temperature Treal_R, also include that temperature optimization and time set
Cover half block, temperature difference detection module, NOF section control module and RTF section control module.
Described temperature optimization and time setting module are for property parameters, plate speed v and the RTF according to steel plate
Furnace temperature TF_R of section calculates NOF section exit plate temperature setting value Tset_N and RTF section exit plate temperature setting value
Tset_R；
Described temperature difference detection module is for according to NOF section exit steel plate actual temperature Treal_N and NOF
Section exit plate temperature setting value Tset_N calculates NOF section exit plate temperature deviation e_N, is additionally operable to according to RTF
Section exit steel plate actual temperature Treal_R and RTF section exit plate temperature setting value Tset_R calculate RTF section and go out
Plate temperature deviation e_R at Kou；
Described NOF section control module for according to the property parameters of steel plate, plate speed v, NOF section furnace temperature TF_N,
NOF section exit steel plate actual temperature Treal_N and NOF section plate temperature deviation e_N calculate in NOF section each
The fuel quantity Gas_N_T_i in district (i=1,2,3 ... n), and control corresponding fuel quantity and be passed through in NOF section the every of correspondence
In individual district；
Described RTF section control module for according to the property parameters of steel plate, plate speed v, RTF end furnace temperature TF_R,
RTF section exit steel plate actual temperature Treal_R and RTF section temperature deviation e_R calculate each district in RTF section
Fuel quantity Gas_N_T_i (i=1,2,3 ... m), and control corresponding fuel quantity be passed through in RTF section correspondence each
Qu Zhong.
According to another aspect of the present invention, it is provided that a kind of cold rolling hot dip galvanizing annealing furnace plate temperature is coordinated to control
Method, comprises the steps:
Step 1: initialize steel plate property parameters and plate speed v, and obtain RTF section furnace temperature TF_R, NOF
Section outlet steel plate actual temperature Treal_N and RTF section exit steel plate actual temperature Treal_R；
Step 2: calculate the outlet of NOF section according to steel plate property parameters, plate speed v and RTF section furnace temperature TF_R
Plate temperature setting value Tset_N and RTF section exit plate temperature setting value Tset_R；
Step 3: set according to NOF section exit steel plate actual temperature Treal_N and NOF section exit plate temperature
Value Tset_N calculates NOF section exit plate temperature deviation e_N, and actual according to RTF section exit steel plate
Temperature Treal_R and RTF section exit plate temperature setting value Tset_R calculate RTF section exit plate temperature deviation e_R；
Step 4: the parameter according to calculating in step 1-3 calculates the fuel quantity in each district in NOF section respectively
Gas_N_T_i (i=1,2,3 ... n) and RTF section in each district fuel quantity Gas_R_T_i (i=1,2,3 ... m), and point
Do not control in each district corresponding in corresponding fuel quantity is passed through NOF section and RTF section.
The invention has the beneficial effects as follows: a kind of cold rolling hot dip galvanizing annealing furnace plate temperature of the present invention is coordinated to control system
System and method, carry out panel temperature by the method for regulation gas flow in real time and reach the precision of technological requirement,
Hybrid intelligent control strategy is used to realize the high accuracy temperature control of cold rolled annealed stove so that annealing furnace
The plate temperature control precision of NOF section and RTF section meets technological requirement so that fuel is more reasonably passed into and moves back
In the NOF section of stove and RTF section, so not only increase the utilization rate of fuel, reduce fuel cost,
And substantially increase the performance of cold-rolled steel sheet.
Accompanying drawing explanation
Fig. 1 is prior art light plate continuous annealing process sketch；
Fig. 2 is prior art light plate continuous annealing target steel billet temperature change curve；
Fig. 3 is a kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system structural representation of the present invention；
Fig. 4 is a kind of cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating schematic flow sheet of the present invention.
Detailed description of the invention
Being described principle and the feature of the present invention below in conjunction with accompanying drawing, example is served only for explaining this
Invention, is not intended to limit the scope of the present invention.
Embodiment one, a kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system.Below in conjunction with Fig. 3
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system of the present invention is described in detail.
As it is shown on figure 3, a kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system, including annealing furnace and
Temperature detecting module, described annealing furnace includes scale-free heating furnace NOF section and radial canal heating furnace RTF section,
Described NOF section and RTF section are divided into multiple district, and described temperature detecting module is for detection NOF section respectively
Furnace temperature TF_N, NOF section exit steel plate actual temperature Treal_N and RTF section furnace temperature TF_R, RTF section
Exit steel plate actual temperature Treal_R, also includes temperature optimization and time setting module, temperature difference detection mould
Block, NOF section control module and RTF section control module.
Described temperature optimization and time setting module are for property parameters, plate speed v and the RTF according to steel plate
Furnace temperature TF_R of section calculates NOF section exit plate temperature setting value Tset_N and RTF section exit plate temperature setting value
Tset_R。
Described temperature difference detection module is for according to NOF section exit steel plate actual temperature Treal_N and NOF
Section exit plate temperature setting value Tset_N calculates NOF section exit plate temperature deviation e_N, is additionally operable to according to RTF
Section exit steel plate actual temperature Treal_R and RTF section exit plate temperature setting value Tset_R calculate RTF section and go out
Plate temperature deviation e_R at Kou.
Described NOF section control module for according to the property parameters of steel plate, plate speed v, NOF section furnace temperature TF_N,
NOF section exit steel plate actual temperature Treal_N and NOF section plate temperature deviation e_N calculate in NOF section each
The fuel quantity Gas_N_T_i in district (i=1,2,3 ... n), and control corresponding fuel quantity and be passed through in NOF section the every of correspondence
In individual district.
Described RTF section control module for according to the property parameters of steel plate, plate speed v, RTF end furnace temperature TF_R,
RTF section exit steel plate actual temperature Treal_R and RTF section temperature deviation e_R calculate each district in RTF section
Fuel quantity Gas_N_T_i (i=1,2,3 ... m), and control corresponding fuel quantity be passed through in RTF section correspondence each
Qu Zhong.
In the present embodiment, described temperature detecting module uses infrared radiation thermometer.By infra-red radiation temperature
Degree meter, can use non-contact measurement, and less by external interference, testing result precision is higher, detection
Convenient, and service life is longer.
In the present embodiment, described temperature optimization and time setting module include RTF section temperature prediction unit,
RTF section plate temperature setup unit, the first temperature and time setup unit and the second temperature and time setup unit.
Wherein, described RTF section temperature prediction unit is for according to steel plate property parameters, plate speed v and RTF
Section furnace temperature TF_R calculates RTF section exit plate temperature variable quantity predictive value Δ pT_R.
Described RTF section plate temperature setup unit for calculating the RTF section plate temperature of steel plate according to steel plate property parameters
Setting value pT_R.
Described first temperature and time setup unit is for according to RTF section exit plate temperature variable quantity predictive value
Deviation e_R of Δ pT_R, plate temperature setting value pT_R of steel plate and RTF section exit plate temperature calculates NOF section and goes out
Setting value Tset_N of oralia temperature and triggered time.
Described second temperature and time setup unit calculates steel for plate temperature setting value pT_R according to steel plate
Setting value Tset_R of plate RTF section exit plate temperature and triggered time.
Described NOF section exit plate can be calculated accurately by described temperature optimization and time setting module
Temperature setting value Tset_N and RTF section exit plate temperature setting value Tset_R, and the triggered time of correspondence,
There is provided data foundation accurately for the fuel quantity in each district in subsequent calculations NOF section and RTF end, and adding
Start to trigger the fuel being passed through corresponding fuel quantity at the end of heat triggered time interval, start accurately heating.
In the present embodiment, described NOF section control module includes feedforward unit, the first intelligent compensation control
Unit processed, the first intelligent temperature control unit and the first fuel quantity assignment control.
Wherein, described feedforward unit compensates due to steel plate attribute when steel plate specification switches for calculating
Variation delta Gas_N_T_2 of fuel quantity needed for Parameters variation.
Described first intelligent compensation control unit for according to NOF section outlet steel plate actual plate temperature Treal_N,
NOF section furnace temperature TF_N and steel plate property parameters calculate and compensate because of the change of the required fuel quantity of steel plate speed v change
Change amount Δ Gas_N_T_3.
Described first intelligent temperature control unit is mended for calculating according to NOF section exit plate temperature deviation e_N
Repay due to variation delta Gas_N_T_1 of fuel quantity needed for plate temperature deviation e_N of NOF section exit.
Described first fuel quantity assignment control is respectively according to compensating due to the change of steel plate parameter attribute, plate
Speed v change and NOF section exit plate temperature deviation e_N needed for fuel quantity variation delta Gas_N_T_2,
Δ Gas_N_T_3 and Δ Gas_N_T_1 calculate each district of NOF section fuel quantity Gas_N_T_i (i=1,2,3 ... n),
And control in each district that corresponding fuel quantity is passed through in NOF section correspondence.
In the present embodiment, described RTF section control module includes that the second intelligent temperature control unit, temperature become
Change detector unit, the second intelligent compensation control unit and the second fuel quantity assignment control.
Wherein, described second intelligent temperature control unit is based on according to RTF section exit plate temperature deviation e_R
Variation delta Gas_R_T_1 of the fuel quantity being induced by.
Described variations in temperature detector unit is according to RTF section furnace temperature TF_R, plate speed v and steel plate property parameters meter
Calculate RTF section plate temperature variation delta T_R under current working.
Described second intelligent compensation control unit is for going out according to RTF section plate temperature variation delta T_R, NOF section
Actual plate temperature Treal_N of mouth and the calculating of RTF section exit plate temperature setting value Tset_R are used for compensating RTF section and enter
Fuel quantity variation delta Gas_R_T_2 that oralia temperature deviation causes.
Described second fuel quantity assignment control is for according to compensating RTF section exit plate temperature deviation e_R institute
Need variation delta Gas_R_T_1 of fuel quantity and compensate fuel quantity variable quantity described in RTF section access panel temperature deviation
Δ Gas_R_T_2 calculates fuel quantity Gas_R_T_i (i=1,2,3 ... m), and the corresponding combustion of control in each district of RTF section
Doses is passed through in RTF section in each district of correspondence.
In the present embodiment, described steel plate property parameters includes plate width pw, thickness of slab ph and template.These ginsengs
Number was known before steel plate is processed, and can inquire according to the information that producer provides.Generally,
For a certain steel plate, all can there is several conventional property parameters, be easier to know.
Embodiment two, a kind of cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating.Below in conjunction with Fig. 4
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating of the present invention is described in detail.
As shown in Figure 4, a kind of cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating, comprise the steps:
Step 1: initialize steel plate property parameters and plate speed v, and obtain RTF section furnace temperature TF_R, NOF
Section outlet steel plate actual temperature Treal_N and RTF section exit steel plate actual temperature Treal_R；
Step 2: calculate the outlet of NOF section according to steel plate property parameters, plate speed v and RTF section furnace temperature TF_R
Plate temperature setting value Tset_N and RTF section exit plate temperature setting value Tset_R；
Step 3: set according to NOF section exit steel plate actual temperature Treal_N and NOF section exit plate temperature
Value Tset_N calculates NOF section exit plate temperature deviation e_N, and actual according to RTF section exit steel plate
Temperature Treal_R and RTF section exit plate temperature setting value Tset_R calculate RTF section exit plate temperature deviation e_R；
Step 4: the parameter according to calculating in step 1-3 calculates the fuel quantity in each district in NOF section respectively
Gas_N_T_i (i=1,2,3 ... n) and RTF section in each district fuel quantity Gas_R_T_i (i=1,2,3 ... m), and point
Do not control in each district corresponding in corresponding fuel quantity is passed through NOF section and RTF section.
Wherein, described step 2 includes:
Step 21: calculate RTF section plate temperature setting value pT_R according to steel plate property parameters；
Step 22: calculate RTF section according to steel plate property parameters, plate speed v and RTF section furnace temperature TF_R and go out
Oralia temperature variable quantity predictive value Δ pT_R；
Step 23: according to RTF section exit plate temperature variable quantity predictive value Δ pT_R, the plate temperature setting value of steel plate
Deviation e_R of pT_R and RTF section exit plate temperature calculates setting value Tset_N of NOF section exit plate temperature and adds
The heat triggered time；
Step 24: calculate the setting of steel plate RTF section exit plate temperature according to plate temperature setting value pT_R of steel plate
Value Tset_R and triggered time.
In described step 4, according to steel plate property parameters, plate speed v, NOF section furnace temperature TF_N, NOF section
Exit steel plate actual temperature Treal_N and NOF section plate temperature deviation e_N calculate the combustion in each district in NOF section
Doses Gas_N_T_i (i=1,2,3 ...), and control in each district that corresponding fuel quantity is passed through in NOF section correspondence；
According to steel plate property parameters, plate speed v, RTF end furnace temperature TF_R, RTF section exit steel plate actual temperature
Treal_R and RTF section temperature deviation e_R calculate each district in RTF section fuel quantity Gas_N_T_i (i=1,2,3 ...),
And control in each district corresponding in corresponding fuel quantity is passed through RTF section.
Specifically, on the one hand, described step 4 comprises the steps:
Step 41a: calculate according to NOF section exit plate temperature deviation e_N and compensate due to NOF section exit
Variation delta Gas_N_T_1 of fuel quantity needed for plate temperature deviation e_N；
Step 42a: calculate and compensate when steel plate specification switches due to the required fuel of steel plate property parameters change
Variation delta Gas_N_T_2 of amount；
Step 43a: according to NOF section outlet steel plate actual plate temperature Treal_N, NOF section furnace temperature TF_N and steel
Plate property parameters calculates and compensates because of variation delta Gas_N_T_3 of the required fuel quantity of steel plate speed v change；
Step 44a: according to compensating owing to NOF section exit plate temperature deviation e_N, steel plate parameter attribute become
Change variation delta Gas_N_T_1 of fuel quantity, Δ Gas_N_T_2 and the Δ Gas_N_T_3 needed for changing with plate speed v
Calculate each district of NOF section fuel quantity Gas_N_T_i (i=1,2,3 ... n), and control corresponding fuel quantity and be passed through NOF
In each district corresponding in Duan.
On the other hand, described step 4 also comprises the steps:
Step 41b: calculate the change of the fuel quantity being induced by according to RTF section exit plate temperature deviation e_R
Amount Δ Gas_R_T_1；
Step 42b: calculate in current work according to RTF section furnace temperature TF_R, plate speed v and steel plate property parameters
RTF section plate temperature variation delta T_R under condition；
Step 43b: according to RTF section plate temperature variation delta T_R, NOF section outlet actual plate temperature Treal_N and
RTF section exit plate temperature setting value Tset_R calculates for compensating the fuel that RTF section access panel temperature deviation causes
Amount variation delta Gas_R_T_2；
Step 44b: according to the variable quantity of fuel quantity needed for compensation RTF section exit plate temperature deviation e_R
Fuel quantity variation delta Gas_R_T_2 described in Δ Gas_R_T_1 and compensation RTF section access panel temperature deviation calculates
The fuel quantity Gas_R_T_i in each district of RTF section (i=1,2,3 ... m), and control corresponding fuel quantity and be passed through NOF section
In each district of middle correspondence.
By above-mentioned steps, the fuel quantity in each district of NOF section and each district of RTF section can be calculated respectively
Fuel quantity, and control, in each district that corresponding fuel quantity enters into NOF section and RTF section, to control accurately,
The plate temperature control precision making annealing furnace NOF section and RTF section meets technological requirement.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system of the present invention and method, by adjusting in real time
The method of throughput of economizing on coal is carried out panel temperature and is reached the precision of technological requirement, uses hybrid intelligent control strategy
Realize the high accuracy temperature control of cold rolled annealed stove so that annealing furnace NOF section and the plate temperature control of RTF section
Precision processed meets technological requirement so that fuel is more reasonably passed in NOF section and the RTF section of annealing furnace,
So not only increase the utilization rate of fuel, reduce fuel cost, and substantially increase cold-rolled steel sheet
Performance.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention
Spirit and principle within, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (10)
1. a cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system, including annealing furnace and temperature detection
Module, described annealing furnace includes scale-free heating furnace NOF section and radial canal heating furnace RTF section, described NOF
Section and RTF section be divided into multiple district, described temperature detecting module for respectively detection NOF section furnace temperature TF_N,
NOF section exit steel plate actual temperature Treal_N and RTF section furnace temperature TF_R, RTF section exit steel plate are in fact
Border temperature Treal_R, it is characterised in that: also include temperature optimization and time setting module, temperature difference detection mould
Block, NOF section control module and RTF section control module；
Described temperature optimization and time setting module be used for calculating NOF section exit plate temperature setting value Tset_N and
RTF section exit plate temperature setting value Tset_R；
Described temperature difference detection module is used for calculating NOF section exit plate temperature deviation e_N and RTF section exit
Plate temperature deviation e_R；
Described NOF section control module is for calculating the fuel quantity in each district in NOF section
Gas_N_T_i (i=1,2,3 ... n), and control in each district that corresponding fuel quantity is passed through in NOF section correspondence；
Described RTF section control module is for calculating the fuel quantity in each district in RTF section
Gas_R_T_i (i=1,2,3 ... m), and control in each district that corresponding fuel quantity is passed through in RTF section correspondence.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system, its
It is characterised by: described temperature detecting module uses infrared radiation thermometer.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system, its
It is characterised by: described temperature optimization and time setting module include RTF section temperature prediction unit, RTF section
Plate temperature setup unit, the first temperature and time setup unit and the second temperature and time setup unit；
Described RTF section temperature prediction unit is for according to steel plate property parameters, plate speed v and RTF section furnace temperature
TF_R calculates RTF section exit plate temperature variable quantity predictive value Δ pT_R；
Described RTF section plate temperature setup unit for calculating the RTF section plate temperature of steel plate according to steel plate property parameters
Setting value pT_R；
Described first temperature and time setup unit is for according to RTF section exit plate temperature variable quantity predictive value
Deviation e_R of Δ pT_R, plate temperature setting value pT_R of steel plate and RTF section exit plate temperature calculates NOF section and goes out
Setting value Tset_N of oralia temperature and triggered time；
Described second temperature and time setup unit calculates steel for plate temperature setting value pT_R according to steel plate
Setting value Tset_R of plate RTF section exit plate temperature and triggered time.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system, its
Be characterised by: described NOF section control module include feedforward unit, the first intelligent compensation control unit,
First intelligent temperature control unit and the first fuel quantity assignment control；
Described feedforward unit compensates due to steel plate property parameters when steel plate specification switches for calculating
Variation delta Gas_N_T_2 of the required fuel quantity of change；
Described first intelligent compensation control unit for according to NOF section outlet steel plate actual plate temperature Treal_N,
NOF section furnace temperature TF_N and steel plate property parameters calculate and compensate because of the change of the required fuel quantity of steel plate speed v change
Change amount Δ Gas_N_T_3；
Described first intelligent temperature control unit is mended for calculating according to NOF section exit plate temperature deviation e_N
Repay due to variation delta Gas_N_T_1 of fuel quantity needed for plate temperature deviation e_N of NOF section exit；
Described first fuel quantity assignment control is respectively according to compensating due to the change of steel plate parameter attribute, plate
Speed v change and NOF section exit plate temperature deviation e_N needed for fuel quantity variation delta Gas_N_T_2,
Δ Gas_N_T_3 and Δ Gas_N_T_1 calculate each district of NOF section fuel quantity Gas_N_T_i (i=1,2,3 ... n),
And and control in each district that corresponding fuel quantity is passed through in NOF section correspondence.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system, its
It is characterised by: described RTF section control module includes that the second intelligent temperature control unit, variations in temperature detect
Unit, the second intelligent compensation control unit and the second fuel quantity assignment control；
Described second intelligent temperature control unit is for calculating by it according to RTF section exit plate temperature deviation e_R
Variation delta Gas_R_T_1 of the fuel quantity caused；
Described variations in temperature detector unit is according to RTF section furnace temperature TF_R, plate speed v and steel plate property parameters meter
Calculate RTF section plate temperature variation delta T_R under current working；
Described second intelligent compensation control unit is for going out according to RTF section plate temperature variation delta T_R, NOF section
Actual plate temperature Treal_N of mouth and the calculating of RTF section exit plate temperature setting value Tset_R are used for compensating RTF section and enter
Fuel quantity variation delta Gas_R_T_2 that oralia temperature deviation causes；
Described second fuel quantity assignment control is for according to compensating RTF section exit plate temperature deviation e_R institute
Need variation delta Gas_R_T_1 of fuel quantity and compensate fuel quantity variable quantity described in RTF section access panel temperature deviation
Δ Gas_R_T_2 calculate each district of RTF section fuel quantity Gas_R_T_i (i=1,2,3 ... m), and and control accordingly
Fuel quantity is passed through in RTF section in each district of correspondence.
6. coordinate to control according to cold rolling hot dip galvanizing annealing furnace plate temperature a kind of described in any one of claim 3-6
System, it is characterised in that: described steel plate property parameters includes plate width pw, thickness of slab ph and template.
7. a cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating, it is characterised in that include as follows
Step:
Step 1: initialize steel plate property parameters and plate speed v, and obtain RTF section furnace temperature TF_R, NOF
Section outlet steel plate actual temperature Treal_N and RTF section exit steel plate actual temperature Treal_R；
Step 2: calculate the outlet of NOF section according to steel plate property parameters, plate speed v and RTF section furnace temperature TF_R
Plate temperature setting value Tset_N and RTF section exit plate temperature setting value Tset_R；
Step 3: set according to NOF section exit steel plate actual temperature Treal_N and NOF section exit plate temperature
Value Tset_N calculates NOF section exit plate temperature deviation e_N, and actual according to RTF section exit steel plate
Temperature Treal_R and RTF section exit plate temperature setting value Tset_R calculate RTF section exit plate temperature deviation e_R；
Step 4: the parameter according to calculating in step 1-3 calculates the fuel quantity in each district in NOF section respectively
Gas_N_T_i (i=1,2,3 ... n) and RTF section in each district fuel quantity Gas_R_T_i (i=1,2,3 ... m), and point
Do not control in each district corresponding in corresponding fuel quantity is passed through NOF section and RTF section.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating, its
Being characterised by, described step 2 includes:
Step 21: calculate RTF section plate temperature setting value pT_R according to steel plate property parameters；
Step 22: calculate RTF section according to steel plate property parameters, plate speed v and RTF section furnace temperature TF_R and go out
Oralia temperature variable quantity predictive value Δ pT_R；
Step 23: according to RTF section exit plate temperature variable quantity predictive value Δ pT_R, the plate temperature setting value of steel plate
Deviation e_R of pT_R and RTF section exit plate temperature calculates setting value Tset_N of NOF section exit plate temperature and adds
The heat triggered time；
Step 24: calculate the setting of steel plate RTF section exit plate temperature according to plate temperature setting value pT_R of steel plate
Value Tset_R and triggered time.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating, its
It is characterised by, described step 4 comprises the steps:
Step 41a: calculate according to NOF section exit plate temperature deviation e_N and compensate due to NOF section exit
Variation delta Gas_N_T_1 of fuel quantity needed for plate temperature deviation e_N；
Step 42a: calculate and compensate when steel plate specification switches due to the required fuel of steel plate property parameters change
Variation delta Gas_N_T_2 of amount；
Step 43a: according to NOF section outlet steel plate actual plate temperature Treal_N, NOF section furnace temperature TF_N and steel
Plate property parameters calculates and compensates because of variation delta Gas_N_T_3 of the required fuel quantity of steel plate speed v change；
Step 44a: according to compensating owing to NOF section exit plate temperature deviation e_N, steel plate parameter attribute become
Change variation delta Gas_N_T_1 of fuel quantity, Δ Gas_N_T_2 and the Δ Gas_N_T_3 needed for changing with plate speed v
Calculate each district of NOF section fuel quantity Gas_N_T_i (i=1,2,3 ... n), and control corresponding fuel quantity and be passed through NOF
In each district corresponding in Duan.
A kind of cold rolling hot dip galvanizing annealing furnace plate temperature control method for coordinating, its
It is characterised by, described step 4 also comprises the steps:
Step 41b: calculate the change of the fuel quantity being induced by according to RTF section exit plate temperature deviation e_R
Amount Δ Gas_R_T_1；
Step 42b: calculate in current work according to RTF section furnace temperature TF_R, plate speed v and steel plate property parameters
RTF section plate temperature variation delta T_R under condition；
Step 43b: according to RTF section plate temperature variation delta T_R, NOF section outlet actual plate temperature Treal_N and
RTF section exit plate temperature setting value Tset_R calculates for compensating the fuel that RTF section access panel temperature deviation causes
Amount variation delta Gas_R_T_2；
Step 44b: according to the variable quantity of fuel quantity needed for compensation RTF section exit plate temperature deviation e_R
Fuel quantity variation delta Gas_R_T_2 described in Δ Gas_R_T_1 and compensation RTF section access panel temperature deviation calculates
The fuel quantity Gas_R_T_i in each district of RTF section (i=1,2,3 ... m), and control corresponding fuel quantity and be passed through RTF section
In each district of middle correspondence.
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| CN201610649014.5A CN106119520B (en) | 2016-04-13 | 2016-08-09 | A kind of cold rolling hot dip galvanizing annealing furnace plate temperature coordinated control system and method |
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| CN108495941A (en) * | 2016-01-28 | 2018-09-04 | 杰富意钢铁株式会社 | The temperature control equipment and temprature control method of steel plate |
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| CN106119520A (en) | 2016-11-16 |
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