CN110373506A - Blast furnace material distribution stream proportioning valve anticipation arbitration control method - Google Patents
Blast furnace material distribution stream proportioning valve anticipation arbitration control method Download PDFInfo
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- CN110373506A CN110373506A CN201910754858.XA CN201910754858A CN110373506A CN 110373506 A CN110373506 A CN 110373506A CN 201910754858 A CN201910754858 A CN 201910754858A CN 110373506 A CN110373506 A CN 110373506A
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009826 distribution Methods 0.000 title claims abstract description 11
- 239000004744 fabric Substances 0.000 claims abstract description 102
- 239000000571 coke Substances 0.000 claims description 52
- 238000001514 detection method Methods 0.000 claims description 14
- 230000005251 gamma ray Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 8
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 5
- 239000002994 raw material Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
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- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
The present invention relates to a kind of blast furnace material distribution stream proportioning valves to prejudge arbitration control method, the data measured when according to blast furnace opening establish original database, and the quadratic fit multinomial of blanking rate and stream ratio valve opening corresponding relationship is acquired according to database, in cloth each time, calculate the corresponding other total weight of material in batch can, and blanking rate is calculated by the cloth time of setting, blanking rate is substituting in the quadratic fit multinomial of stream ratio valve opening corresponding relationship, anticipation obtains the opening value of stream proportioning valve when this cloth, the cloth time of the practical cloth time and setting that measure are compared into arbitration, database data is automatically updated, and fit the quadratic fit multinomial of new blanking rate and stream ratio valve opening corresponding relationship.With the continuous renewal of database data amount, the quadratic polynomial fitted is more accurate, more accurate to the anticipation of the aperture of stream proportioning valve.
Description
Technical field
The present invention relates to a kind of blast furnace material distribution control method, specifically a kind of blast furnace material distribution stream proportioning valve anticipation is secondary
Cut out control method.
Background technique
In the entire production process of blast furnace, cloth control is the core control in production process, and stream proportioning valve is opened
Degree is the core in core control again.Reasonable stream ratio valve opening can guarantee the material in batch can according to the number of rings cloth of setting
It is complete, it solves the problems, such as that cloth is not in place or is overlapped, reaches the optimal cloth effect of blast furnace, guarantee the direct motion of the working of a furnace.Therefore, pass through
Anticipation arbitration control optimizes the aperture of stream proportioning valve, plays a crucial role to blast fumance.
In actual production process, the control to stream ratio valve opening is all often by tabling look-up or according to operator
Experience, the manually aperture of assignment stream proportioning valve.With the variation of the grade of raw material, granularity etc., operator is to material
The aperture setting of stream proportioning valve needs often to be adjusted.It is more additionally, due to disturbing factor, the weighing of such as batch can because by
Influence, ageing equipment of stream proportioning valve of press etc., cause adjustment difficulty to increase, and cloth accuracy reaches not within a certain period of time
To optimal, cause furnace throat charge level undesirable.Also the blow-on curve measured when the blast furnace having is according to blow-on carries out automatic calculating stream
The aperture of proportioning valve, but the data differences in basic data and production process are larger, and creation data is constantly changing always, and base
Plinth data not will be updated, and the aperture deviation that this results in stream proportioning valve is too big, have a negative impact to the working of a furnace.
Summary of the invention
It is an object of the invention to provide a kind of blast furnace material distribution stream proportioning valves to prejudge arbitration control method, present to solve
Blast furnace stream ratio valve opening deviation in cloth is too big, the problem of having a negative impact to the working of a furnace.
The present invention is implemented as follows: a kind of blast furnace material distribution stream proportioning valve anticipation arbitration control method, including following step
It is rapid:
A. in blast furnace opening, measurement stream proportioning valve is under different opening under corresponding coke blanking rate and ore respectively
Material rate respectively obtains the corresponding relationship and ore blanking rate of coke blanking rate and stream ratio valve opening according to measurement data
With the corresponding relationship of stream ratio valve opening, original database is consequently formed；
B. according to the data in database, the blanking rate of the blanking rate and ore that fit coke respectively respectively with stream ratio
The quadratic fit multinomial of example valve opening corresponding relationship；
C. it is arranged according to current material list, measures coke with ore and distinguish the weight of material in corresponding each feed bin,
And be separately summed coke weight corresponding with ore, coke and the respective total weight of ore are obtained, to obtain in batch can
The other total weight of current cloth material；
D. it according to the cloth time of the current cloth classification of batch can, the total weight of material and corresponding category setting, counts respectively
Calculate the blanking rate of coke and ore；
E. the blanking rate obtained from step d is substituted into the resulting blanking rate of step b and stream ratio valve opening corresponding relationship
Quadratic fit multinomial in, obtain the default opening value of stream proportioning valve when this cloth；
F. in cloth, the opening value of control stream proportioning valve is above-mentioned default opening value, and is pacified according on batch can
The practical cloth time of the gamma ray detection device detection batch can of dress；
G. the practical cloth time obtained according to detection, whether the related data for arbitrating this cloth is valid data, will
Database is written in arbitration result, is updated to the data in database, and fit new blanking rate and open with stream proportioning valve
Spend the quadratic fit multinomial of corresponding relationship；
H. step c~step g is repeated several times, the database and blanking rate and stream ratio valve opening pair updated
The quadratic fit multinomial that should be related to.
In step g, the cloth time of practical cloth time and setting are compared, if the cloth of practical cloth time and setting
Expect that the difference between the time is greater than 1s, then blanking rate anticipation value and the cloth time set is fail data, by fail data
It rejects and database is written into the opening value of the actual value of blanking rate, practical cloth time and stream proportioning valve.
In step c, if weight of material with expection weight differs larger in batch can, without later the step of, material
Stream ratio valve opening keeps opening value when previous cloth.
The present invention is by actual cloth situation, and arbitration result returned data library constantly updates data, from
And the quadratic fit multinomial of blanking rate and stream ratio valve opening corresponding relationship is constantly optimized, make cloth next time
When the opening value of stream proportioning valve that prejudges be current optimal.The material stock situation of gamma ray detection batch can is used simultaneously,
Calculate practical discharging time, can it is big by batch can inner powder dust quantity to avoid batch can radar level gauge, temperature is high and blow device is pacified
It fills and measures inaccuracy caused by the factors such as complexity.Weight of material in coke feed bin corresponding with ore is added respectively, is added up
The weight of material in batch can is obtained afterwards, can be easy to be influenced the drawbacks of bringing by press to avoid because of batch can weighing, weighing is more
Accurately, so that blanking rate is accurately calculated, it can also obtain stream proportioning valve and more accurately prejudge aperture.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Fig. 2 is initial data base of the invention.
Fig. 3 is the list that the present invention is obtained according to initial data base and fitting quadratic polynomial.
Fig. 4 is the list that the present invention is obtained according to updated database.
Fig. 5 is the normal equation group that the present invention is obtained by Fig. 4.
Specific embodiment
As shown in Figure 1, the present invention the following steps are included:
A. in blast furnace opening, measurement stream proportioning valve is under different opening under corresponding coke blanking rate and ore respectively
Material rate respectively obtains the corresponding relationship and ore blanking rate of coke blanking rate and stream ratio valve opening according to measurement data
With the corresponding relationship of stream ratio valve opening, original database is consequently formed；
B. according to the data in database, the blanking rate of the blanking rate and ore that fit coke respectively respectively with stream ratio
The quadratic fit multinomial of example valve opening corresponding relationship；
C. it is arranged according to current material list, measures coke with ore and distinguish the weight of material in corresponding each feed bin,
And be separately summed coke weight corresponding with ore, coke and the respective total weight of ore are obtained, to obtain in batch can
The other total weight of current cloth material；
D. it according to the cloth time of the current cloth classification of batch can, the total weight of material and corresponding category setting, counts respectively
Calculate the blanking rate of coke and ore；
E. the blanking rate obtained from step d is substituted into the resulting blanking rate of step b and stream ratio valve opening corresponding relationship
Quadratic fit multinomial in, obtain the default opening value of stream proportioning valve when this cloth；
F. in cloth, the opening value of control stream proportioning valve is above-mentioned default opening value, and is pacified according on batch can
The practical cloth time of the gamma ray detection device detection batch can of dress；
G. the practical cloth time obtained according to detection, whether the related data for arbitrating this cloth is valid data, will
Database is written in arbitration result, is updated to the data in database, and fit new blanking rate and open with stream proportioning valve
Spend the quadratic fit multinomial of corresponding relationship；
H. step c~step g is repeated several times, the database and blanking rate and stream ratio valve opening pair updated
The quadratic fit multinomial that should be related to.
In step g, the cloth time of practical cloth time and setting are compared, if the cloth of practical cloth time and setting
Expect that the difference between the time is greater than 1s, then blanking rate anticipation value and the cloth time set is fail data, by fail data
It rejects and database is written into the opening value of the actual value of blanking rate, practical cloth time and stream proportioning valve.
In step c, if weight of material with expection weight differs larger in batch can, without later the step of, material
Stream ratio valve opening keeps opening value when last time cloth.
Raw material is divided into coke and two kinds of ore, now when coke cloth for, to blast furnace material distribution stream proportioning valve prejudge it is secondary
The specific embodiment for cutting out control method is described in detail:
One, as shown in Fig. 2, in blast furnace opening, stream proportioning valve corresponding coke blanking rate under different opening is measured,
According to measurement data, the corresponding relationship for obtaining coke blanking rate and stream ratio valve opening is consequently formed original database, gives
Later period anticipation control provides preliminary data support.
Two, according to the data in database, blanking rate and the corresponding pass of stream ratio valve opening of original coke are fitted
The quadratic fit multinomial of system.
According to the basic data of write-in database, its quadratic fit multinomial is sought with least square method.In database when
Preceding only 15 groups of data, if fit curve equation formula is
γ=a0+a1G+a2G2
Table shown in Fig. 3 is obtained according to equation, normal equation group is obtained according to table
It solves:
a0=17.837, a1=0.1999 a2=-0.0004
Acquire unique solution, therefore quadratic fit multinomial are as follows:
γ=17.837+0.1999G+-0.0004G2
Three, it is arranged according to current material list, the weight of material in the corresponding each feed bin of measurement coke, and by coke phase
Corresponding weight is added, and the total weight of coke is obtained, to obtain the total weight of coke in batch can.
According to current material list, it is assumed that the 1st batch of the 1st vehicle corresponds to storehouse number and correspond to storehouse number for coke 1, coke 3, burnt 5, the 1st batch of the 2nd vehicle and be
Coke 2, coke 4, coke 6.
The practical shake doses of storehouse coke 1 is W1=1890Kg, and the practical shake doses of storehouse coke 3 is W3=2000Kg, and storehouse coke 5 is real
It is W5=1110Kg that border, which shakes doses, and the practical shake doses of coke 2 is W2=1950Kg, and the practical shake doses of coke 4 is W4=1950Kg, coke 6
Practical shake doses is W6=1600Kg.
The 1st batch of practical shake doses of the 1st vehicle is W1+W3+W5=5000Kg, and the 2nd batch of practical shake doses of the 2nd vehicle is W2+W4+W6
=5500Kg, that is to say, that the actual weight of eastern melt pit is 5000Kg, and the actual weight of western melt pit is 5500Kg, into batch can
Coke total weight is Wg=11000Kg.
It is carried out according to the setting value of the corresponding raw coke amount in storehouse number in the setting of current material list and actual shake doses real-time
It compares, while considering compensation rate.If record data and expected shake material data differ very big, in batch can weight of material in advance
Phase weight difference is larger, considers that system record material goes wrong or is interfered again, automatically rejects the secondary data.
Four, according to batch can total weight and the cloth time of setting, the anticipation value of the blanking rate of coke is calculated.
Coke raw material cloth sets number of rings as h=8 ring in batch can, and cloth finishes after coke raw material batch can rotates 8 rings, practical
Live trough apparatus rotates the ring time for t=8s, and calculating the complete coke charge charcoal of cloth outputting estimated used time is T=t*h=64s.According to
Formula G=Wg/T, the blanking rate for calculating the coke charge charcoal is G=11000/64=171.8Kg/s.
Five, blanking rate obtained in the previous step is substituting to the quadratic fit of blanking rate and stream ratio valve opening corresponding relationship
In multinomial, anticipation obtains the opening value of stream proportioning valve when this cloth.
Blanking rate G is calculated before each cloth, G is substituted into fitting quadratic polynomial, this time cloth stream prejudged
The opening value γ that proportioning valve should be set, automatically by the value assignment into control system, after the triggering of cloth signal, stream ratio
Valve directly reaches set angle and carries out cloth.If system record material goes wrong or is interfered again, weight of material in batch can
Differ larger with expection weight, then the opening value of stream proportioning valve prejudges when this is not to cloth, protects stream proportioning valve
Angle is prejudged when holding last time cloth, and this time database will not be written in the data of cloth.
Six, in cloth, the opening value of control stream proportioning valve is the opening value that prejudges of previous step, and according to expecting
The practical cloth time for the gamma ray detection device detection batch can installed on tank.
Gamma ray according to batch can installation determines the amount of storage of raw material in batch can, is not done by dust and temperature
It disturbs, has many advantages, such as that the service life is long, low in energy consumption, precision is high.Since receiving system after cloth signal, timing is automatically begun to, etc.
When gamma ray issues material spacing wave, stop timing, simultaneity factor calculates duration used in this cloth automatically, real by comparison
Border blowing duration and setting duration obtain the quality of this cloth.
Seven, the practical cloth time obtained according to detection, whether the related data for arbitrating this cloth is valid data, will
Database is written in arbitration result, is updated to the data in database, and fit new blanking rate and open with stream proportioning valve
Spend the quadratic fit multinomial of corresponding relationship.
The result that system is prejudged by the blanking rate of this cloth and actual cloth time and before is compared, if this
Secondary cloth data in the reasonable scope, then arbitrate this result for valid data, database will not be written in this group of data.If
This time not in the reasonable scope, this data is arbitrated as fail data for cloth data, and by this practical blanking rate and reality
Database is written in border stream ratio valve opening, and fail data is rejected.Pass through the time of practical cloth and the cloth of setting
The difference between the time is expected to judge cloth data whether in reasonable Fan Weinei, if when the cloth of practical cloth time and setting
Between between difference be greater than 1s, then this time the obtained data of cloth are not in the reasonable scope.It is continuous with database data amount
Increase, the quadratic polynomial fitted is more accurate, more accurate to the anticipation of the aperture of stream proportioning valve.
Citing: assuming that certain blowing raw material is coke, this batch of cloth material weight is 4966Kg, and cloth number of rings is set as 8 rings, often
Time used in ring is 8s, i.e. the cloth time is 64s.
Calculating the secondary coke blanking rate is 77.6Kg/s, passes through the quadratic polynomial fitted before cloth to stream ratio
Valve opening is prejudged, and can be obtained:
γ=17.837+0.1999*77.6+-0.0004*77.62=30.9
This time anticipation stream ratio valve opening is 30.9 degree, and in actual cloth process, which is
70s, that is to say, that actual blanking rate is 70.9Kg/s.After cloth, system arbitrates blowing result are as follows: this time cloth cloth
The material time is 70s, and blanking rate is 70.9Kg/s, and stream ratio valve opening is 30.9 degree, because of this group of data and originally the number that prejudged
Comparing according to (cloth time 64s, blanking rate 77.6Kg/s, stream ratio valve opening are 30.9 degree), the difference of cloth time is 6s,
Originally not in the reasonable scope, so database is written in practical cloth data, fail data is rejected for anticipation data.
By constantly arbitrating, database is constantly updated, simultaneity factor can combine minimum two according to new database data
The principle of multiplication re-starts fitting of a polynomial, for instructing the anticipation of cloth angle next time.After update several times
Equation list as shown in figure 4, the normal equation that is obtained according to updated list as shown in figure 5, solve the value of each coefficient,
Obtain updated polynomial fitting are as follows:
γ=a0+a1G+a2G2
By constantly carrying out anticipation and arbitrating control, the data in database can be constantly updated, and constantly be intended
Optimal multinomial is closed out, final realization stream proportioning valve, which can prejudge, is optimal aperture.
The present invention is by actual cloth situation, and arbitration result returned data library constantly updates data, from
And the quadratic fit multinomial of blanking rate and stream ratio valve opening corresponding relationship is constantly optimized, make cloth next time
When the opening value of stream proportioning valve that prejudges be current optimal.The material stock situation of gamma ray detection batch can is used simultaneously,
Calculate practical discharging time, can it is big by batch can inner powder dust quantity to avoid batch can radar level gauge, temperature is high and blow device is pacified
It fills and measures inaccuracy caused by the factors such as complexity.Weight of material in coke feed bin corresponding with ore is added respectively, is added up
The weight of material in batch can is obtained afterwards, can be easy to be influenced the drawbacks of bringing by press to avoid because of batch can weighing, weighing is more
Accurately, so that blanking rate is accurately calculated, it can also obtain stream proportioning valve and more accurately prejudge aperture.
Claims (3)
1. a kind of blast furnace material distribution stream proportioning valve anticipation arbitration control method, which comprises the following steps:
A. in blast furnace opening, stream proportioning valve corresponding coke blanking rate and ore blanking under different opening are measured respectively
Rate, according to measurement data, respectively obtain coke blanking rate and stream ratio valve opening corresponding relationship and ore blanking rate with
The corresponding relationship of stream ratio valve opening, is consequently formed original database；
B. according to the data in database, the blanking rate of the blanking rate and ore that fit coke respectively respectively with stream ratio
The quadratic fit multinomial of valve opening corresponding relationship；
C. it is arranged according to current material list, measurement coke distinguishes the weight of material in corresponding each feed bin with ore, and will
Coke weight corresponding with ore is separately summed, and obtains coke and the respective total weight of ore, to obtain current in batch can
The other total weight of cloth material；
D. it according to the cloth time of the current cloth classification of batch can, the total weight of material and corresponding category setting, calculates separately out
The blanking rate of coke and ore；
E. the blanking rate obtained from step d is substituted into the two of the resulting blanking rate of step b and stream ratio valve opening corresponding relationship
In secondary polynomial fitting, the default opening value of stream proportioning valve when this cloth is obtained；
F. in cloth, the opening value of control stream proportioning valve is above-mentioned default opening value, and according to installing on batch can
The practical cloth time of gamma ray detection device detection batch can；
G. the practical cloth time obtained according to detection, whether the related data for arbitrating this cloth is valid data, will be arbitrated
As a result database is written, the data in database are updated, and fits new blanking rate and stream ratio valve opening pair
The quadratic fit multinomial that should be related to；
H. step c ~ step g is repeated several times, the database and blanking rate that are updated and the corresponding pass of stream ratio valve opening
The quadratic fit multinomial of system.
2. blast furnace material distribution stream proportioning valve anticipation arbitration control method according to claim 1, which is characterized in that in step
In g, the cloth time of practical cloth time and setting are compared, if the difference between practical cloth time and the cloth time of setting
Value is greater than 1s, then blanking rate anticipation value and the cloth time set is as fail data, by fail data rejecting and by blanking rate
Actual value, practical cloth time and stream proportioning valve opening value database is written.
3. blast furnace material distribution stream proportioning valve anticipation arbitration control method according to claim 1, which is characterized in that in step
In c, if weight of material with expection weight differs larger in batch can, without later the step of, stream ratio valve opening is protected
Hold opening value when previous cloth.
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| CN114104770A (en) * | 2021-10-09 | 2022-03-01 | 煤科院节能技术有限公司 | Method and system for controlling feeding speed of powder feeder |
| CN114104770B (en) * | 2021-10-09 | 2024-06-04 | 北京天地融创科技股份有限公司 | Method and system for controlling feeding rate of powder feeder |
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Application publication date: 20191025 |