CN106500813A - A kind of method that utilization Mathematical Modeling monitors disk feeder feeding coal - Google Patents
A kind of method that utilization Mathematical Modeling monitors disk feeder feeding coal Download PDFInfo
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- CN106500813A CN106500813A CN201610841208.5A CN201610841208A CN106500813A CN 106500813 A CN106500813 A CN 106500813A CN 201610841208 A CN201610841208 A CN 201610841208A CN 106500813 A CN106500813 A CN 106500813A
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- disk feeder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
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Abstract
The present invention relates to a kind of method that utilization Mathematical Modeling monitors disk feeder feeding coal, belongs to mixing dosage technical field.Technical scheme is：Set up Mathematical Modeling of the actual feeding coal of disk feeder with relation between disk feeder motor actual speed, when actual speed continuously more than（Theoretical rotational speed B）+ D } or less than（Theoretical rotational speed B）D } when, illustrate actual feeding coal more than or less than setting feeding coal；Actual feeding coal can be reflected with the gap for setting feeding coal by the fluctuation situation of real-time rotating speed；According to the actual feeding coal that the Mathematical Modeling can monitor disk feeder.Beneficial effect of the present invention：As disk feeder motor speed increases, then feeding coal increase, as disk feeder motor speed reduces, then feeding coal reduces.Once disk feeder motor speed is reported to the police beyond alarming value is set, operating personnel are reminded to search reason, the very first time stops abnormal dispensing state, it is ensured that charge ratio executes precision.
Description
Technical field
The present invention relates to a kind of method that utilization Mathematical Modeling monitors disk feeder feeding coal, belongs to mixing dosage technology
Field.
Background technology
Disk feeder is made up of batcher and weighing machine, is the commonly used dispensing equipment of iron and steel enterprise, is spread all over raw material
The production processes such as field, sintering, coking, with sensitive, reliable, accurate advantage.For disk feeder, can reach in theory
The precision that production needs.But, in actual production process, due to the impact of equipment, management and extraneous factor, such as weigh support
The problems such as roller operating exception, belt deviation, speed measuring device exception, sensor abnormality, null offset, can all cause actual feeding coal
There is deviation with feeding coal is set；And pass through the regulation of feed proportioning system itself so that the value that is reflected on electronic scale with set to
Doses numerical value remains identical, i.e., data still show normally, therefore dispensing proceeds, without being directed to system equipment itself
The detection of problem；When deviation progressively becomes big, could find by naked eyes or go to pinpoint the problems after difference accounting using between scale, also very
Delayed, often lead to stock's deviation, it is difficult to remedy, make dispensing quality deviation occur；The execution precision of charge ratio determines dispensing
The physical and chemical performance and metallurgical performance of structure, cost, technical-economic index and product, plays very important work to blast fumance
With the quality of dispensing quality directly influences blast fumance, and especially crucial kind once deviation occurs, will bring severe shadow
Ring.Therefore, find in time and solve disk feeder abnormality, be this area technical problem urgently to be resolved hurrily.
Content of the invention
It is an object of the present invention to provide a kind of method that utilization Mathematical Modeling monitors disk feeder feeding coal, using mathematical modulo
Type is monitored, when the actual feeding coal of disk feeder exceeds preset alarm value and alarm, it is to avoid feed proportioning system appearance is big inclined
Difference, it is ensured that mixing dosage quality, solves the problems referred to above that background technology is present.
The technical scheme is that：
A kind of method that utilization Mathematical Modeling monitors disk feeder feeding coal, comprises the following steps：
The first step：The theoretical rotational speed and real-time rotating speed of computer acquisition disk feeder motor；
Second step：Analyze and process above-mentioned data, draw embody disk feeder motor theoretical rotational speed and real-time rotating speed with
The wave pattern of time change；In wave pattern, used as the longitudinal axis, the time is used as transverse axis, referred to as coordinate diagram for rotating speed；
For the feed numerical quantity that multiple disk feeders, each disk feeder set, the theory of a corresponding motor
Rotating speed, is a constant value, shows a horizontal linear in coordinate diagram；The real-time rotating speed of motor fluctuates because of real-time feeding coal, leads to
The regulation of module PID is crossed, the real-time rotating speed of disk feeder motor was continually changing with the time, showed a curve of cyclical fluctuations in coordinate diagram
Figure；The theoretical rotational speed of each disk feeder motor and the time dependent wave pattern of real-time rotating speed, respectively same
Embody in coordinate diagram, be easy to inquire about, contrast, count, analyzing；
3rd step：The actual feeding coal of disk feeder is set up with the mathematical modulo between disk feeder motor actual speed
Type：
Q=A* γ * R* π * 60*r/i=(A* γ * R* π * 60/i) * r
In formula：
Q：Disk feeder hour feeding coal, unit：t/h；
A：Disk feeder discharging open area, unit：m2；
γ：Material bulk density, unit：t/m3；
R：Disk feeder card discharging opening midpoint diameter, unit：m；
r:Disk feeder motor speed, unit：Turn/min；
i:Disk feeding machine speed reducer speed ratio；
Disk feeder discharging open area is certain, one timing of material on disk, A* γ * R* π * 60/i are constant C；
Q=C*r
The hour feeding coal of disk feeder, is directly proportional with the motor speed of disk feeder, is linear relationship；
In real work, due to being subject to gatage, material proportion, material moisture, discharging opening blocking, material position height low
Various factors affects, and the intermediate value of actual speed has deviation with theoretical rotational speed, and deviation changes with factors above；I.e. real-time rotating speed
Curve of cyclical fluctuations figure, around intermediate value line fluctuate, rather than around theoretical rotational speed line fluctuation；
Before monitoring system is enabled first, by disk feeder weighing equipment normal premised on, using system in coordinate diagram
Meter instrument is calculated, and obtains the mean value of interior each representative disk feeder actual speed, i.e. intermediate value, maximum and most
Little value；As the guidance foundation of the disk feeder operational factor, for tracking, analyzing, compare；
The intermediate value of deviation B=theoretical rotational speed-actual speed, round numbers；
The undulating value D=(actual speed maximum-actual speed minimum of a value)/2 of disk feeder motor actual speed, takes
Integer；
As theoretical rotational speed correspondingly sets feeding coal change, B value changes are relatively small, in order to reduce statistical work amount, make
Adaptability bigger, the normal fluctuation range value using disk feeder motor speed is as follows：
{ (theoretical rotational speed-B)-D }～{ (theoretical rotational speed-B)+D }
When actual speed continuously more than { (theoretical rotational speed-B)+D } or less than { (theoretical rotational speed-B)-D } when, illustrate actually to
Doses is more than or less than setting feeding coal；Can reflect that actual feeding coal is same by the fluctuation situation of real-time rotating speed and set feed
The gap of amount；According to the actual feeding coal that the Mathematical Modeling can monitor disk feeder.
The present invention can install warning device, set interval of reporting to the police：
Required according to actual production, set the high-low limit alarming value of actual speed；
Each disk feeder actual operating state is taken into account, the speed curves figure of disk feeder motor is analyzed, it is to avoid wink
The wrong report of Shi Bodong, and the impact for dispensing quality, using the amount of floating of theoretical rotational speed 10%, and give failure and continue 10
Minute starts to report to the police, the setting of real-time rotating speed high-low limit alarming value, according to (electric machine theory rotating speed-B) ± (electric machine theory turns
Fast * 10%+D) set.
The warning device includes SIEMENS PLC, output relay, connection cable, audible-visual annunciator, in STEP7 (west
The sub- programming software of door) in hardware configuration, configure numeral output alarm point, the corresponding output relay of alarm point is prescribed as report
The trigger point of alert device, relay are connected with alarm by cable；According to the setting of alarming value, in STEP7, (Siemens's programming is soft
Part) in edit routine so that output relay triggers alarm when alert if is met；Simultaneously in WINCC (in form control
The heart) in make corresponding alarm screen, middle control personnel can cause warning by observing picture and find out after alarm triggering
Disk feeder.
The actual feeding coal for determining disk feeder for the first time of the invention has with the actual speed of disk feeder motor
Linear corresponding relation；Although because data display is normal after system fading margin during unit exception, but disk feeder motor speed energy
Enough changes for embodying actual feeding coal；Therefore, the present invention sets up the actual feeding coal of disk feeder with disk feeder motor reality
The Mathematical Modeling of relation between the rotating speed of border, the actual feeding coal that disk feeder can be monitored using the Mathematical Modeling.
Beneficial effect of the present invention：As disk feeder motor speed increases, then feeding coal increase, with disk feeder
Motor speed reduces, then feeding coal reduces.Once disk feeder motor speed is reported to the police, is carried beyond alarming value is set
Awake operating personnel search reason, and the very first time stops abnormal dispensing state, it is ensured that charge ratio executes precision.
Description of the drawings
Fig. 1 is warning device of the present invention and connection diagram；
In figure：QF breakers, PE ground connection；
Fig. 2 be the embodiment of the present invention in disk feeder set feeding coal with disk feeder motor theoretical rotational speed it
Between linear corresponding diagram；
In figure：Y-axis-disk feeder motor speed (rev/min)
X-axis-disk feeder hour feeding coal (ton hour).
Specific embodiment
By the following examples, the present invention will be further described.
Originally certain iron company's raw material workshop mixing dosage system is embodied as, is comprised the following steps that：
The first step：By built-in program of computer, gather each dispensing metering device (disk) electric machine theory rotating speed and
Real-time rotating speed, and work out alert program；
Using the FC105 (105 function) in STEP7 (Siemens's programming software) the tach signal collected from frequency converter
It is transformed into the full mold value shown with engineering unit；In the Blocks (block) of SIMATIC300 (300 series of SIEMENS PLC) website
Insertion FC (X) (function), the program segment in this FC (X) are according to alarming value=(electric machine theory rotating speed-B) ± (electric machine theory turns
Fast * 10%+D) create, argument table is which used, also time delay is increased for warning output, set 10 minutes；Time one arrives,
DO (digital output) module connects relay, so as to trigger alarm；
Second step：Theoretical rotational speed and real-time rotating speed are embodied respectively with the time using Wincc on middle control computation picture
Wave pattern；In wave pattern, used as the longitudinal axis, the time is used as transverse axis for rotating speed；
3rd step：The actual feeding coal of disk feeder is set up with the mathematical modulo between disk feeder motor actual speed
Type：
By taking No. 1 disk feeder in raw material workshop as an example, hour feeding coal has following corresponding relation with rotating speed：
Q=A* γ * R* π * 60*r/i=C*r；
Wherein：A=disk feeder discharging opening width * height=0.8*0.3=0.24 (m2)
γ=2.5 (t/m3) R=1.27 (m) i=240
C=A* γ * R* π * 60/i=0.24*2.5*1.273*3.14*60/240=0.59958 ≈ 0.6
The disk hour feeding coal of Q=0.6r disk feeders is directly proportional with disk feeder motor speed, is linear closing
System.
4th step：Obtain B, D value set in alarming value：
In electronic scale through verification, equipment and feed proportioning system is determined under normal circumstances, according to each disk feeder material
Different qualities, the disk feeder motor speed curvilinear figure on middle control picture be reflected in previous step, justify to each respectively
Disk batcher is analyzed, and through statistical computation after a while, obtains the mean value of motor speed, maximum, minimum of a value, rounds
Number, so as to obtain B, D value of each disk feeder, round numbers can adjust.
Warning high-low limit value=(setting electric machine theory rotating speed-B) ± (setting electric machine theory rotating speed * 10%+D)；
5th step：Warning device is installed
After warning device is installed, sets failure in a program and continue to start to report to the police for 10 minutes, the fluctuation of theoretical rotational speed 10%
Amount, B, D value being input in alarming value, startup program bring into operation；
6th step：Debugging
According to practical operation situation, the undulate quantity of B, D value, trouble duration and theoretical rotational speed is adjusted, more targetedly
Ground solving practical problems, meet production needs.
Claims (3)
1. a kind of method that utilization Mathematical Modeling monitors disk feeder feeding coal, it is characterised in that comprise the following steps：
The first step：The theoretical rotational speed and real-time rotating speed of computer acquisition disk feeder motor；
Second step：Above-mentioned data are analyzed and processed, and the theoretical rotational speed and real-time rotating speed that embody disk feeder motor are drawn with the time
The wave pattern of change；In wave pattern, used as the longitudinal axis, the time is used as transverse axis, referred to as coordinate diagram for rotating speed；
For the feed numerical quantity that multiple disk feeders, each disk feeder set, the theoretical rotational speed of a motor is corresponded to,
For a constant value, show a horizontal linear in coordinate diagram；The real-time rotating speed of motor fluctuates because of real-time feeding coal, by module
PID is adjusted, and the real-time rotating speed of disk feeder motor was continually changing with the time, showed a curve of cyclical fluctuations figure in coordinate diagram；
The theoretical rotational speed of each disk feeder motor and the time dependent wave pattern of real-time rotating speed, respectively in same coordinate diagram
Middle embodiment；
3rd step：The actual feeding coal of disk feeder is set up with the Mathematical Modeling between disk feeder motor actual speed：
Q=A*γ*R*π*60*r/i=（A*γ*R*π*60/i）* r
In formula：
Q：Disk feeder hour feeding coal, unit： t/h ；
A：Disk feeder discharging open area, unit： m2 ；
γ：Material bulk density, unit： t/m3；
R：Disk feeder card discharging opening midpoint diameter, unit：m ；
R:Disk feeder motor speed, unit：Turn/min；
i:Disk feeding machine speed reducer speed ratio；
Disk feeder discharging open area is certain, one timing of material on disk, A* γ * R* π * 60/i are constant C；
Q=C*r
The hour feeding coal of disk feeder, is directly proportional with the motor speed of disk feeder, is linear relationship；
Before monitoring system is enabled first, by disk feeder weighing equipment normal premised on, in coordinate diagram using statistics work
Tool is calculated, and obtains the mean value of interior each representative disk feeder actual speed, i.e. intermediate value, maximum and minimum
Value；As the guidance foundation of the disk feeder operational factor, for tracking, analyzing, compare；
The intermediate value of deviation B=theoretical rotational speed-actual speed, round numbers；
The undulating value D=of disk feeder motor actual speed（Actual speed maximum-actual speed minimum of a value）/ 2, round numbers；
The normal fluctuation range value of disk feeder motor speed is as follows：
{（Theoretical rotational speed-B）- D }～（Theoretical rotational speed-B）+D }
When actual speed continuously more than（Theoretical rotational speed-B）+ D } or less than（Theoretical rotational speed-B）- D } when, actual feed is described
Amount is more than or less than setting feeding coal；Can reflect that actual feeding coal is same by the fluctuation situation of real-time rotating speed and set feeding coal
Gap；According to the actual feeding coal that the Mathematical Modeling can monitor disk feeder.
2. the method that a kind of utilization Mathematical Modeling according to claim 1 monitors disk feeder feeding coal, its feature exist
In：Warning device is installed, sets interval of reporting to the police；
Using the amount of floating of theoretical rotational speed 10%, and give failure and continue to start to report to the police for 10 minutes, real-time rotating speed high-low limit is reported to the police
The setting of value, according to（Electric machine theory rotating speed-B）±（Electric machine theory rotating speed * 10%+D）Set.
3. the method that a kind of utilization Mathematical Modeling according to claim 2 monitors disk feeder feeding coal, its feature exist
In：The warning device includes SIEMENS PLC, output relay, connection cable, audible-visual annunciator, in STEP7 hardware configurations
In, numeral output alarm point is configured, the trigger point prescribed as alarm of the corresponding output relay of alarm point, relay lead to
Cross cable to be connected with alarm；According to the setting of alarming value, edit routine in STEP7 so that output relay is meeting report
Alarm is triggered during alert condition；In WINCC, simultaneously make corresponding alarm screen, middle control personnel after alarm triggering,
The disk feeder that reports to the police can be caused by observing picture and finding out.
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| CN201610841208.5A CN106500813B (en) | 2016-09-22 | 2016-09-22 | A method of disk feeder feeding coal is monitored using mathematical model |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112577586A (en) * | 2020-10-19 | 2021-03-30 | 邯郸钢铁集团有限责任公司 | Material object scale correcting method for belt electronic scale of disc feeder |
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| CN112577586A (en) * | 2020-10-19 | 2021-03-30 | 邯郸钢铁集团有限责任公司 | Material object scale correcting method for belt electronic scale of disc feeder |
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