CN106500813B - A method of disk feeder feeding coal is monitored using mathematical model - Google Patents
A method of disk feeder feeding coal is monitored using mathematical model Download PDFInfo
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- CN106500813B CN106500813B CN201610841208.5A CN201610841208A CN106500813B CN 106500813 B CN106500813 B CN 106500813B CN 201610841208 A CN201610841208 A CN 201610841208A CN 106500813 B CN106500813 B CN 106500813B
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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
Abstract
The present invention relates to a kind of methods using mathematical model monitoring disk feeder feeding coal, belong to mixing dosage technical field.Technical solution is: establishing the practical feeding coal of disk feeder with the mathematical model of relationship between disk feeder motor actual speed, when actual speed is continuously greater than { (theoretical rotational speed-B)+D } or is less than { (theoretical rotational speed-B)-D }, illustrate that practical feeding coal is more than or less than setting feeding coal；It can reflect out practical feeding coal with the gap of setting feeding coal by the fluctuation situation of real-time revolving speed；The practical feeding coal of disk feeder can be monitored according to the mathematical model.The invention has the advantages that: increasing with disk feeder motor speed, then feeding coal increases, and as disk feeder motor speed reduces, then feeding coal reduces.Once disk feeder motor speed is alarmed beyond setting alarming value, operator is reminded to search reason, stop abnormal ingredient state at the first time, guarantees that charge ratio executes precision.
Description
Technical field
The present invention relates to a kind of methods using mathematical model monitoring disk feeder feeding coal, belong to mixing dosage technology
Field.
Background technique
Disk feeder is made of batcher and weighing machine, is the commonly used dispensing equipment of iron and steel enterprise, throughout raw material
The production processes such as field, sintering, coking have the advantages that sensitive, reliable and accurate.For disk feeder, theoretically can achieve
Produce the precision needed.But in the actual production process, due to the influence of equipment, management and extraneous factor, support is such as weighed
Roller operates the problems such as exception, belt deviation, speed measuring device exception, sensor abnormality, null offset, can all lead to practical feeding coal
It is deviated with setting feeding coal；And by the adjusting of feed proportioning system itself so that the value being reflected on electronic scale with setting to
Doses numerical value be still it is identical, i.e., data are still shown normally, therefore ingredient continues, without be directed to system equipment itself
The detection of problem；When deviation gradually becomes larger, it could be found by naked eyes or go to find the problem after calculating using difference between scale, also very
Lag often leads to inventory's deviation, it is difficult to remedy, ingredient quality is made deviation occur；The execution precision of charge ratio determines ingredient
Structure, cost, technical-economic index and product physical and chemical performance and metallurgical performance, very important work is played to blast fumance
With the quality of ingredient quality directly influences blast fumance, and deviation once occurs in especially crucial kind, will bring severe shadow
It rings.Therefore, disk feeder abnormality is found and solved in time, is this field technical problem urgently to be resolved.
Summary of the invention
It is an object of the present invention to provide a kind of methods using mathematical model monitoring disk feeder feeding coal, utilize mathematical modulo
Type monitoring avoids feed proportioning system from occurring big inclined when the practical feeding coal of disk feeder exceeds preset alarm value and alarm
Difference guarantees mixing dosage quality, solves the above problem existing for background technique.
The technical scheme is that
A method of disk feeder feeding coal is monitored using mathematical model, comprising the following steps:
Step 1: the theoretical rotational speed and real-time revolving speed of computer acquisition disk feeder motor；
Step 2: analysis handles above-mentioned data, draw the theoretical rotational speed for embodying disk feeder motor and real-time revolving speed with
The wave pattern of time change；In wave pattern, revolving speed is as the longitudinal axis, and the time is as horizontal axis, referred to as coordinate diagram；
For multiple disk feeders, the feed numerical quantity of each disk feeder setting, the theory of a corresponding motor
Revolving speed is a constant value, a horizontal linear is shown in coordinate diagram；The real-time revolving speed of motor leads to because real-time feeding coal fluctuates
Module PID adjusting is crossed, the real-time revolving speed of disk feeder motor constantly changes at any time, and a curve of cyclical fluctuations is shown in coordinate diagram
Figure；The wave pattern that the theoretical rotational speed and real-time revolving speed of each disk feeder motor change over time, respectively same
It is embodied in coordinate diagram, convenient for inquiry, comparison, statistics, analysis；
Step 3: establishing the practical feeding coal of disk feeder 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 disk discharge port midpoint diameter, unit: m；
R: unit: disk feeder motor speed turns/min；
I: disk feeding machine speed reducer speed ratio；
In disk feeder discharging open area, centainly, on disk periodically, A* γ * R* π * 60/i is constant C to material one；
Q=C*r
The hour feeding coal of disk feeder, it is directly proportional with the motor speed of disk feeder, it is linear relationship；
In actual operation, due to low by gatage, material specific gravity, material moisture, discharge port blocking, material position height
Various factors influences, and the intermediate value of actual speed has deviation with theoretical rotational speed, and deviation changes with factors above；I.e. real-time revolving speed
Curve of cyclical fluctuations figure, around intermediate value line fluctuate, rather than around theoretical rotational speed line fluctuate；
Before enabling monitoring system for the first time, premised on disk feeder weighing equipment is normal, system is utilized in coordinate diagram
Meter tool calculates, and obtains the average value of interior representative each disk feeder actual speed, i.e. intermediate value, maximum value and most
Small value；As the guidance foundation of the disk feeder operating parameter, for tracking, analyzing, compare；
Deviation B=theoretical rotational speed-actual speed intermediate value, round numbers；
The undulating value D=(actual speed maximum value-actual speed minimum value)/2 of disk feeder motor actual speed, takes
Integer；
Due to the corresponding setting feeding coal variation of theoretical rotational speed, the variation of B value is relatively small, in order to reduce statistical work amount, makes
Adaptability it is bigger, it is as follows using the normal fluctuation range value of disk feeder motor speed:
{ (theoretical rotational speed-B)-D }~{ (theoretical rotational speed-B)+D }
When actual speed be continuously greater than { (theoretical rotational speed-B)+D } or be less than { (theoretical rotational speed-B)-D } when, illustrate actually to
Doses is more than or less than setting feeding coal；It can reflect out practical feeding coal by the fluctuation situation of real-time revolving speed and set feed together
The gap of amount；The practical feeding coal of disk feeder can be monitored according to the mathematical model.
The present invention can install warning device, setting alarm section:
It is required according to actual production, sets 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, avoids wink
The wrong report of Shi Bodong, and the influence for ingredient quality using the amount of floating of theoretical rotational speed 10%, and give failure and continue 10
Minute starts to alarm, the setting of real-time revolving speed high-low limit alarming value, according to (electric machine theory revolving speed-B) ± (electric machine theory turn
Fast * 10%+D) it is set.
The warning device includes SIEMENS PLC, output relay, connecting cable, combined aural and visual alarm, in (the west STEP7
The sub- programming software of door) in hardware configuration, numeral output alarm point is configured, the corresponding output relay of alarm point is prescribed as report
The trigger point of alert device, relay are connect by cable with alarm；According to the setting of alarming value, in STEP7, (Siemens's programming is soft
Part) in editing procedure so that output relay triggers alarm when meeting alert if；Simultaneously in WINCC (in form control
The heart) in the corresponding alarm screen of production, middle control personnel can cause alarm by observing picture and find out after alarm triggering
Disk feeder.
The present invention has determined that the practical feeding coal of disk feeder has with the actual speed of disk feeder motor for the first time
Linear corresponding relation；Although data are shown normally after system is adjusted when because of unit exception, disk feeder motor speed energy
Enough variations for embodying practical feeding coal；Therefore, it is real with disk feeder motor to establish the practical feeding coal of disk feeder by the present invention
The mathematical model of relationship between the revolving speed of border can monitor the practical feeding coal of disk feeder using the mathematical model.
The invention has the advantages that: increasing with disk feeder motor speed, then feeding coal increases, with disk feeder
Motor speed reduces, then feeding coal reduces.Once disk feeder motor speed is alarmed, is mentioned beyond setting alarming value
The operator that wakes up searches reason, stops abnormal ingredient state at the first time, guarantees that charge ratio executes precision.
Detailed description of the invention
Fig. 1 is warning device of the present invention and connection schematic diagram；
In figure: QF breaker, PE ground connection；
Fig. 2 be the embodiment of the present invention in disk feeder setting 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 it is embodied as certain iron company's raw material workshop mixing dosage system, the specific steps are as follows:
Step 1: by built-in program of computer, acquire each ingredient dosing device (disk) electric machine theory revolving speed and
Real-time revolving speed, and work out alert program；
Using the FC105 (105 function) in STEP7 (Siemens's programming software) from the collected tach signal of 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
It is inserted into FC (X) (function), the program segment in this FC (X) is according to alarming value=(electric machine theory revolving speed-B) ± (electric machine theory turn
Fast * 10%+D) creation, which use argument tables, also increase delay for warning output, set 10 minutes；Time one arrives,
DO (digital output) module connects relay, to trigger alarm；
Step 2: embodying theoretical rotational speed and real-time revolving speed respectively at any time on middle control computation picture using Wincc
Wave pattern；Revolving speed is as the longitudinal axis in wave pattern, and the time is as horizontal axis；
Step 3: establishing the practical feeding coal of disk feeder 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 relationship with revolving speed:
Q=A* γ * R* π * 60*r/i=C*r；
Wherein: A=disk feeder discharge port 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 feeder is directly proportional with disk feeder motor speed, is linearly to close
System.
Step 4: obtaining B, D value in setting alarming value:
In electronic scale by verifying, equipment and feed proportioning system are determined under normal circumstances, according to each disk feeder material
Different characteristics are reflected in the disk feeder motor speed curvilinear figure on middle control picture to previous step, respectively to each circle
Disk batcher is analyzed, and is counted calculating after a period of time, obtains average value, the maximum value, minimum value of motor speed, is rounded
Number, to obtain B, D value of each disk feeder, round numbers be can adjust.
Alarm high-low limit value=(setting electric machine theory revolving speed-B) ± (setting electric machine theory revolving speed * 10%+D)；
Step 5: installation warning device
After warning device is installed, failure is set in a program and continues to start to alarm for 10 minutes, the fluctuation of theoretical rotational speed 10%
Amount, inputs B, D value in alarming value, and startup program brings into operation；
Step 6: debugging
According to the actual operation, B, D value, the undulate quantity of trouble duration and theoretical rotational speed are adjusted, more targetedly
Ground solving practical problems meet production needs.
Claims (3)
1. a kind of method using mathematical model monitoring disk feeder feeding coal, it is characterised in that the following steps are included:
Step 1: the theoretical rotational speed and real-time revolving speed of computer acquisition disk feeder motor；
Step 2: analysis handles above-mentioned data, the theoretical rotational speed for embodying disk feeder motor and real-time revolving speed are drawn at any time
The wave pattern of variation；In wave pattern, revolving speed is as the longitudinal axis, and the time is as horizontal axis, referred to as coordinate diagram；
For multiple disk feeders, the feed numerical quantity of each disk feeder setting, the theoretical rotational speed of a corresponding motor,
For a constant value, a horizontal linear is shown in coordinate diagram；The real-time revolving speed of motor passes through module because real-time feeding coal fluctuates
PID is adjusted, and the real-time revolving speed of disk feeder motor constantly changes at any time, and a curve of cyclical fluctuations figure is shown in coordinate diagram；
The wave pattern that the theoretical rotational speed and real-time revolving speed of each disk feeder motor change over time, respectively in the same coordinate diagram
Middle embodiment；
Step 3: establishing the practical feeding coal of disk feeder with the mathematical model 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 disk discharge port midpoint diameter, unit: m；
R: unit: disk feeder motor speed turns/min；
I: disk feeding machine speed reducer speed ratio；
In disk feeder discharging open area, centainly, on disk periodically, A* γ * R* π * 60/i is constant C to material one；
Q=C*r
The hour feeding coal of disk feeder, it is directly proportional with the motor speed of disk feeder, it is linear relationship；
Before enabling monitoring system for the first time, premised on disk feeder weighing equipment is normal, statistics work is utilized in coordinate diagram
Tool calculates, and obtains the average value of interior representative each disk feeder actual speed, i.e. intermediate value, maximum value and minimum
Value；As the guidance foundation of the disk feeder operating parameter, for tracking, analyzing, compare；
Deviation B=theoretical rotational speed-actual speed intermediate value, round numbers；
The undulating value D of disk feeder motor actual speed=(actual speed maximum value-actual speed minimum 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 is continuously greater than { (theoretical rotational speed-B)+D } or is less than { (theoretical rotational speed-B)-D }, illustrate practical feed
Amount is more than or less than setting feeding coal；Reflect practical feeding coal with the difference of setting feeding coal by the fluctuation situation of real-time revolving speed
Away from；Practical feeding coal according to mathematical model monitoring disk feeder.
2. a kind of method using mathematical model monitoring disk feeder feeding coal according to claim 1, feature exist
In: installation warning device, setting alarm section；
Using the amount of floating of theoretical rotational speed 10%, and gives failure and continue to start to alarm for 10 minutes, real-time revolving speed high-low limit alarm
The setting of value is set according to (electric machine theory revolving speed-B) ± (electric machine theory revolving speed * 10%+D).
3. a kind of method using mathematical model monitoring disk feeder feeding coal according to claim 2, feature exist
In: the warning device includes SIEMENS PLC, output relay, connecting cable, combined aural and visual alarm, in STEP7 hardware configuration
In, numeral output alarm point, the trigger point of the corresponding output relay of alarm point prescribed as alarm are configured, relay leads to
Cable is crossed to connect with alarm；According to the setting of alarming value, the editing procedure in STEP7, so that output relay is meeting report
Alarm is triggered when alert condition；Make corresponding alarm screen in WINCC simultaneously, middle control personnel after alarm triggering,
The disk feeder for causing and alarming can be found out by observing picture.
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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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| CN101559879A (en) * | 2009-05-27 | 2009-10-21 | 北京太富力传动机器有限责任公司 | Modular disc feeder and production method thereof |
| CN103318631A (en) * | 2013-07-15 | 2013-09-25 | 新兴河北工程技术有限公司 | Speed control device of disk feeder |
| CN104016144A (en) * | 2014-06-18 | 2014-09-03 | 云南大红山管道有限公司 | Disc feeding system controllable in feeding number |
| CN204173613U (en) * | 2014-07-30 | 2015-02-25 | 山西太钢不锈钢股份有限公司 | A kind of disk feeder gate |
| CN105314365A (en) * | 2014-06-26 | 2016-02-10 | 宝山钢铁股份有限公司 | Device and method for monitoring flux quality changes on line |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10018986B2 (en) * | 2014-06-05 | 2018-07-10 | Clarence Richard | Mass flow control for a conveyor system |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5236093A (en) * | 1992-11-13 | 1993-08-17 | Weyerhaeuser Company | Rate control overflow system for disk screens |
| CN101559879A (en) * | 2009-05-27 | 2009-10-21 | 北京太富力传动机器有限责任公司 | Modular disc feeder and production method thereof |
| CN103318631A (en) * | 2013-07-15 | 2013-09-25 | 新兴河北工程技术有限公司 | Speed control device of disk feeder |
| CN104016144A (en) * | 2014-06-18 | 2014-09-03 | 云南大红山管道有限公司 | Disc feeding system controllable in feeding number |
| CN105314365A (en) * | 2014-06-26 | 2016-02-10 | 宝山钢铁股份有限公司 | Device and method for monitoring flux quality changes on line |
| CN204173613U (en) * | 2014-07-30 | 2015-02-25 | 山西太钢不锈钢股份有限公司 | A kind of disk feeder gate |
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