CN105986118A - Automatic water adding apparatus for mixed material in sintering machine and control method thereof - Google Patents
Automatic water adding apparatus for mixed material in sintering machine and control method thereof Download PDFInfo
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- CN105986118A CN105986118A CN201510041796.XA CN201510041796A CN105986118A CN 105986118 A CN105986118 A CN 105986118A CN 201510041796 A CN201510041796 A CN 201510041796A CN 105986118 A CN105986118 A CN 105986118A
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Abstract
An automatic water adding apparatus for a mixed material in a sintering machine and a control method thereof. The automatic water adding apparatus includes a primary-mixing water-adding apparatus, a secondary-mixing water-adding apparatus, a primary-mixing material inlet rubber belt, a primary mixer, a primary-mixing material outlet rubber belt, a secondary mixer, a rubber belt machine and a sintering pallet. The primary-mixing material inlet rubber belt, the primary mixer, the primary-mixing material outlet rubber belt, the secondary mixer, the rubber belt machine and the sintering pallet are connected to each other successively. The primary-mixing water-adding apparatus is connected to the primary mixer and the secondary-mixing water-adding apparatus is connected to the secondary mixer. The control method includes the steps of: setting target water content; obtaining the original water content of the mixed material; tracing the material adding quantity and calculating the material adding total quantity of the mixed material; calculating deviation water content according to the target water content and the original water content; calculating pre-adding water quantity; and controlling valve output through PID.
Description
Technical field
The present invention relates to sintering machine system and control method thereof, more particularly, it relates to sintering machine mixing
Material automatic watering apparatus and control method thereof.
Background technology
Steel industry sintering process be by Iron Ore Powder, flux, fuel, substitute and return mine by necessarily than
Example composition compound is equipped with amount of water, sinters in sintering machine.In sintering process, upper strata sinters
Moisture in material flashes to steam in temperature-rise period.With exhausting, steam starts in lower floor cold
Material surface condensation forms excessive moistening layer.The gas permeability of excessive moistening layer is very poor, hinders burning and heat transfer, causes burning
Knot house steward's temperature reduces, negative pressure raises, sintering is slow, not only affects the quality of sintering deposit, has an effect on
Production efficiency.Therefore moisture is one of key factor affecting steel industry sintering process.Existing sintering machine
Compound water feeding method is in Non-follow control, particular by on-the-spot priming apparatus display screen " on "
D score key carrys out control valve open degree.Control adds appropriate, owing to manually the mode of adding water is doped with artificially
, there is larger difference between different operating person, easily cause fluctuation in factor, is unfavorable for producing.
Content of the invention
Adding water for sintering machine present in prior art needs the problem of Non-follow control, the mesh of the present invention
Be to provide mixture of sintering machine automatic watering apparatus and control method thereof.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of mixture of sintering machine automatic watering apparatus, including one mix priming apparatus, two mix priming apparatus,
It one is mixed into material adhesive tape, primary mixer, one mix discharging adhesive tape, second drum mixer, sealing-tape machine, sintering
Chassis.It one is mixed into material adhesive tape, primary mixer, one mix discharging adhesive tape, second drum mixer, sealing-tape machine
Being sequentially connected with pallet, one mixes priming apparatus is connected to primary mixer, and two mix priming apparatus even
It is connected to second drum mixer.
According to one embodiment of the invention, one mixes priming apparatus includes mixing water pipe, one mixes water control
Device processed, one mix water electric control valve, one mix water stop valve, one mix discharge detector.One
Mixing water pipe, one mixing water electric control valve, one mix water stop valve and be sequentially connected with, one mixes current
Amount detector is arranged at one and mixes on the pipeline that water electric control valve and is mixed between water stop valve.One
Mix water controller and accept a feedback data mixing discharge detector, mix water power in order to control
Dynamic regulation valve, one mixes water stop valve connects primary mixer.
According to one embodiment of the invention, one mixes water controller receives a moisture ginseng being mixed into material adhesive tape
Number and one mixes the water parameters of discharging adhesive tape.
According to one embodiment of the invention, two mix priming apparatus includes two mixing water pipe, two mixes water control
Device processed, two mix water electric control valve, two mix water stop valve, two mix discharge detector.Two
Mixing water pipe, two mixing water electric control valve, two mix water stop valve and be sequentially connected with, two mix current
Amount detector is arranged at two and mixes on the pipeline that water electric control valve and two is mixed between water stop valve.Two
Mix water controller and accept two feedback data mixing discharge detector, mix water power in order to control two
Dynamic regulation valve, two mix water stop valve connecting secondary mixer.
According to one embodiment of the invention, two mix water controller receives a moisture ginseng mixing discharging adhesive tape
Number.
For achieving the above object, the present invention also adopts the following technical scheme that
The control method of a kind of mixture of sintering machine automatic watering apparatus, comprises the following steps: set mesh
Mark moisture rate；Obtain the original moisture rate of compound；Follow the tracks of discharge quantity, and the pan feeding calculating compound is total
Amount；Calculate deviation moisture rate according to Target moisture rate and original moisture rate；Calculate additive water amount；Utilize
PID control valve position exports.
According to one embodiment of the invention, also include: export moisture according to valve position output detections；According to
Output moisture and Target moisture rate calculate deviation and feed back to PID control.
In technique scheme, the mixture of sintering machine automatic watering apparatus of the present invention and controlling party thereof
Method, not only carries out Accurate Determining, and achieves automatically controlling of moisture to mixture moisture content.Should
Device and the application of control method, promote that mixture moisture is stable and the benign cycle of production process,
Be conducive to the raising of Sintering Yield and quality, and alleviate labour intensity, improve productivity ratio, have
It is beneficial to sintering consumption reduction, at metallurgy industry, there is bigger application value.
Brief description
Fig. 1 is the structural representation of mixture of sintering machine automatic watering apparatus of the present invention；
Fig. 2 is the structural representation of watering controller in Fig. 1；
Fig. 3 is the flow chart of mixture of sintering machine automatic watering apparatus control method of the present invention；
Fig. 4 is the logical schematic of Fig. 3 control system.
Detailed description of the invention
Further illustrate technical scheme with embodiment below in conjunction with the accompanying drawings.
Present invention aim at providing a kind of mixture of sintering machine automatic watering apparatus and control method, existing
On the basis of primary mixer Target moisture rate the 6%th, second drum mixer Target moisture rate 7%, it is achieved
Line measurement and control, when batch mixing moisture pursuit gain deviation a reference value, meeting self regulating valve door size is defeated
Go out, namely change output, it is ensured that the control of sintered mixture moisture is close with desired value, is steady
Determine SINTERING PRODUCTION and create good condition.
As it is shown in figure 1, the open a kind of mixture of sintering machine automatic watering apparatus of the present invention, including one mixes
Priming apparatus, two mix priming apparatus, one be mixed into material adhesive tape, primary mixer, one mix discharging adhesive tape,
Second drum mixer, sealing-tape machine, pallet.It one is mixed into material adhesive tape, primary mixer, one mix discharging
Adhesive tape, second drum mixer, sealing-tape machine and pallet are sequentially connected with, and one mixes priming apparatus is connected to one
Secondary mixer, two mix priming apparatus is connected to second drum mixer.
As in figure 2 it is shown, one mix priming apparatus include mixing water pipe, one mix water controller FIC2201,
One mix water electric control valve FVI2201, one mix water stop valve FSV2202, one mix discharge
Detector PV2201, pressure switch, electromagnetic flowmeter, electric control valve, stop valve, infrared moisture
Instrument and PLC control system.
Specifically, one mix water pipe, one mix water electric control valve FVI2201, one mix water and cut
Disconnected valve FSV2202 is sequentially connected with, and one mixes discharge detector PV2201 is arranged at one and mixes water power
Dynamic regulation valve FVI2201 and mixes on the pipeline between water stop valve FSV2202.One mixes water control
Device FIC2201 processed accepts a feedback data mixing discharge detector PV2201, in order to control one
Mixing water electric control valve FVI2201, one mixes water stop valve FSV2202 connects primary mixer.
One mix water controller FIC2201 receive one be mixed into material adhesive tape water parameters and mix discharging adhesive tape
Water parameters.
One mixes the connection that priming apparatus is realized host computer and PLC by EPA, on-the-spot
Analog quantity and on-off model all use signal cable transmission to access PLC.Completed existing by PLC
The realization of the input/output process of field device interlocking and analog quantity, material tracking and pid control algorithm,
And complete the output of controlled quentity controlled variable.
With continued reference to Fig. 2, same mixed priming apparatus be similar to, two mix priming apparatus include two mix water pipe,
Two mix water controller FIC2301, two mix water electric control valve FVI2301, two mix water cut off
Valve FSV2302, two mix discharge detector PV2303.Two mix water pipe, two mix water electric adjustable
Joint valve FVI2301, two mixing water stop valve FSV2302 and being sequentially connected with, two mix discharge detector
PV2303 is arranged at two and mixes water electric control valve FVI2301 and two and mix water stop valve FSV2302
Between pipeline on.Two mix water controller FIC2301 acceptance two mixes discharge detector PV2303
Feedback data, mix water electric control valve FVI2301 in order to control two, two mix water stop valve
FSV2302 connecting secondary mixer.Two mix water controller FIC2301 reception one mixes discharging adhesive tape
Water parameters.
As it is shown on figure 3, invention additionally discloses the controlling party of a kind of mixture of sintering machine automatic watering apparatus
Method, it mainly comprises the steps that
Step S1: set Target moisture rate
Step S2: obtain the original moisture rate of compound
Step S3: follow the tracks of discharge quantity
Step S4: calculate the pan feeding total amount of compound
Step S5: calculate deviation moisture rate according to Target moisture rate and original moisture rate
Step S6: calculate additive water amount
Step S7: utilize PID control valve position to export
Step S8: export moisture according to valve position output detections
Step S9: calculate deviation according to output moisture and Target moisture rate and feed back to PID control
By above-mentioned steps it can be seen that compound adds water at twice, i.e. mixed once adds water and secondary
Mixing and water adding.Wherein, based on mixed once adds water, its amount of water is bigger；Secondary mix supplement adds water,
Only playing fine setting effect, its amount of water is less.Compound contained humidity by the original water yield, additive water amount and
The feedback modifiers water yield three part is constituted.Wherein, the original water yield is the water yield before compound enters mixer,
Additive water amount is the thick amount of water that feedforward control calculates, and feedback modifiers amount is according to setting value and value of feedback
The correction amount of water (be used for FEEDBACK CONTROL) that calculates of drift gage.
As can be seen from Figure 3, system substantially controls thinking and is: the first blanking of tracing detection every electronic scale
Amount, calculate compound enters cylinder (mixer) gross weight, the then original moisture according to every kind of raw material
Calculate the aqueous total amount (the i.e. original water yield) of the cylinder material that comes in and goes out；Secondly the target setting according to host computer
Moisture carries out the calculating of total Water, deducts the original water yield as thick amount of water (i.e. with the total Water calculating
Additive water amount)；Measured value and desired value finally according to infrared moisture meter carry out deviation calculating, pass through
PID controls to adjust valve position, it is achieved the fine setting of the control that adds water.
Specifically, one mixing water for slightly adding water, its control mode has " returning feedback " and " feedforward+instead
Feedback " two kinds.When selecting " feedback " control, using Target moisture value as setting value, mix water with one
The detected value dividing instrument constitutes single closed-loop control as feedback.When selecting " feedforward+feedback " mode,
It is further added by a feedforward control on the basis of single closed loop feedback control and carry out pre-adding water.
Additionally, the acquisition of original moisture also has a two ways: manually and follow the tracks of.When using manual mode,
Manually set compound initial condition score value by operator；When using tracking mode, then carry according to raw material plant
The raw material moisture of confession is tracked and is calculated mixture moisture before cylinder.Operating personnel can be according to reality
The border condition of production selects suitable control mode.In addition, may be used without the mode manually adding water, i.e. grasp
Make the mixture moisture value according to mixer Target moisture value and measurement for the personnel, be adjusted at host computer
Valve valve position sets to control and adds water.Owing to manually the mode of adding water is doped with human factor, different operating person
Between there is larger difference, easily cause fluctuation.Therefore, substantially use automatically during normal production
Control adds water, and only when system plays pendulum, just proceeds to manually, by grasping by the mode of adding water
Work person directly sets amount of water control and adds water.
Two to mix water be that fine setting adds water, and its amount of water is relatively small, but control mode and mixes water class
Seemingly.Mixing and water adding control system has a following function: the warning of the pressure that adds water and interlocking, process data
Monitoring, data filing, history graphs, sound and light alarm etc., its good man-machine interface is operation
Personnel provide the human-computer dialogue of hommization.
Further illustrate technique scheme below by an embodiment.
Moisture automatic regulating system now uses feedforward plus feedback control.
A. feedforward control
Because also having material in mixer and on pan feeding belt when system starts, need fast in mixer
Speed adds water, and otherwise in machine, material can cause partial material to become dry because adding water delay.Now, automatic control
System can be according to the doses signal of mixer enabling signal and pan feeding belt conveyer scale thereof, and existing one is mixed into material doses
280t/h, robot control system(RCS) judges that mixing system opens car moment, and doses just adds water rapidly more than 280t/h,
Two confuse.
As shown in Figure 4, making rapidly the reaction adding water, additive water amount is by feeding, moisture estimated value
And technological requirement reaches water gradation parameter and determines, automatically control electronic valve confluent through PLC.As one mixes
Pan feeding sealing-tape machine moment stops transport, and mixer and outfeed belt run.Now robot control system(RCS) can basis be mixed
The mixing time (mixer feeding mouth is to discharging opening mixing time) of conjunction machine is gradually reduced the water yield and then closes
Closing motor-driven valve, after one is mixed into material belt operation, robot control system(RCS) can be according to the start stop signal of pan feeding belt
And pan feeding belt blanking point to mixer head filling up area delay time control add water.Two confuse.
This scheme can meet the on-line checking of sintered mixture moisture and add the water yield automatically control demand, really
Protect the control range of sinter mixture system final moisture content (desired value).
B. FEEDBACK CONTROL
Mix discharge probe tube (electromagnetic flowmeter) parts insertion one by one and mix in water pipe, detect
Carrying out signal shielded cable and first delivering to isolator input, isolator output delivers to plc analog quantity again
On input module 140ACI04000 terminal, after processing through CPU, just change into actual pressure value also
Being process PV value, flow range corresponding relation is 0-10m3The corresponding 4-20MA of/h, namely on-the-spot
One mixes water pipe flow pv value for 10m3/ h, Analog input mModule 140ACI04000 terminal is
20MA, on-the-spot display flow pv value is 5m3/ h, plc Analog input mModule 140ACI04000
Should be 12MA on terminal, the flow signal that thus adds water scene is converted to 4-20ma current signal and send
To PLC control.
Flow controlling unit is embodied as seeing Fig. 1 to Fig. 4, and control is divided into and automatically controlling and Non-follow control
Two ways.The i.e. artificial given electric control valve 4-20MA current signal of Non-follow control, control
Motorized adjustment valve opening, now check one mix water pipe in add water flow PV value, as pv value is more than sp
Value (see Fig. 1), then to reduce and mix water controller mv output valve, as pv value less than sp value (see
Fig. 1), then to increase and mix water controller mv output valve, final pv process values sets close to sp
Value.
It is all to run under automated manner under normal circumstances, automatically control and i.e. carried out automatically by computer
Control, it is not necessary to carry out manual intervention, existing primary mixer Target moisture rate 6%, correction factor is
0.7%.By following the tracks of the discharge quantity of every electronic scale, calculate compound enters a gross weight, and existing one mixes
Feeding is 280t/h, by Moisture Meter detect a batch mixing enter cylinder before moisture rate be 4.6%, for reaching
To one mixed revise after Target moisture rate 6.7%, now set one mix water controller SV setting value as
6.5m3/ h (according to technique adjustable), this value of system lock, now PIC2201 controller op value
Can automatically adjust, corresponding electric control valve can automatically adjust aperture, and corresponding one mixes water pipe flow pv
Value follows target SP value (6.5m automatically3/ h) move up and down, final pv value is close to sp value namely
Pv value is at 6.5m3Carry out fixing quantity, so that it is guaranteed that one to mix water pipe stability of flow controlled under/h.Logical
Cross tracking one batch mixing go out cylinder after on sealing-tape machine 2 feeding be 284t/h, moisture rate is detected as 6.79%
Reach checking.Two mixed revise after Target moisture rate 7.8%, its principle is to one to mix water transfer principle similar.
Those of ordinary skill in the art is it should be appreciated that above embodiment is intended merely to
The bright present invention, and it is not used as limitation of the invention, as long as at the spirit of the present invention
In, change, the modification of embodiment described above all will be fallen in the range of claims of the present invention.
Claims (7)
1. a mixture of sintering machine automatic watering apparatus, it is characterised in that include:
One mix priming apparatus, two mix priming apparatus, one be mixed into material adhesive tape, primary mixer, one mix out
Material adhesive tape, second drum mixer, sealing-tape machine, pallet；
It described one is mixed into material adhesive tape, primary mixer, one mix discharging adhesive tape, second drum mixer, adhesive tape
Machine and pallet are sequentially connected with, and described one mixes priming apparatus is connected to described primary mixer, described
Two mix priming apparatus is connected to described second drum mixer.
2. mixture of sintering machine automatic watering apparatus as claimed in claim 1, it is characterised in that institute
State one to mix priming apparatus and include:
One mix water pipe, one mix water controller, one mix water electric control valve, one mix water cut off
Valve, one mix discharge detector；
Described one mix water pipe, one mix water electric control valve, one mix water stop valve and be sequentially connected with,
Described one mix discharge detector be arranged at described one mix water electric control valve and mix water cut off
On pipeline between valve；
Described one mixes water controller accepts described one feedback data mixing discharge detector, in order to
Control described one and mix water electric control valve；
Described one mixes water stop valve connects described primary mixer.
3. mixture of sintering machine automatic watering apparatus as claimed in claim 2, it is characterised in that institute
State one mix water controller receive one be mixed into material adhesive tape water parameters and mix discharging adhesive tape moisture ginseng
Number.
4. mixture of sintering machine automatic watering apparatus as claimed in claim 1, it is characterised in that institute
State two to mix priming apparatus and include:
Two mix water pipe, two mix water controller, two mix water electric control valve, two mix water cut off
Valve, two mix discharge detector；
Described two mix water pipe, two mix water electric control valve, two mix water stop valve and be sequentially connected with,
Described two mix discharge detector be arranged at described two mix water electric control valve and two mix water cut off
On pipeline between valve；
Described two mix water controller accepts described two feedback data mixing discharge detector, in order to
Control described two and mix water electric control valve；
Described two mix water stop valve connects described second drum mixer.
5. mixture of sintering machine automatic watering apparatus as claimed in claim 4, it is characterised in that institute
State two and mix the water parameters that water controller reception one mixes discharging adhesive tape.
6. the control method of a mixture of sintering machine automatic watering apparatus, it is characterised in that include with
Lower step:
Set Target moisture rate；
Obtain the original moisture rate of compound；
Follow the tracks of discharge quantity, and calculate the pan feeding total amount of compound；
Calculate deviation moisture rate according to described Target moisture rate and original moisture rate；
Calculate additive water amount；
PID control valve position is utilized to export.
7. the control method of mixture of sintering machine automatic watering apparatus as claimed in claim 6, it is special
Levy and be, also include:
Export moisture according to described valve position output detections；
Calculate deviation according to described output moisture and Target moisture rate and feed back to PID control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041796.XA CN105986118A (en) | 2015-01-27 | 2015-01-27 | Automatic water adding apparatus for mixed material in sintering machine and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041796.XA CN105986118A (en) | 2015-01-27 | 2015-01-27 | Automatic water adding apparatus for mixed material in sintering machine and control method thereof |
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| CN105986118A true CN105986118A (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510041796.XA Pending CN105986118A (en) | 2015-01-27 | 2015-01-27 | Automatic water adding apparatus for mixed material in sintering machine and control method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133106A (en) * | 2017-12-21 | 2018-06-08 | 山东诺德能源科技有限公司 | A kind of method for the moisture that mixture of sintering machine is estimated according to amount of water |
| CN108300852A (en) * | 2018-02-27 | 2018-07-20 | 首钢京唐钢铁联合有限责任公司 | A kind of pelletizing mixture moisture control device and method |
| CN112725614A (en) * | 2020-12-21 | 2021-04-30 | 安徽长江钢铁股份有限公司 | Method for controlling water content of sinter mixture |
| CN113238478A (en) * | 2021-05-14 | 2021-08-10 | 武汉工程大学 | Feedforward and closed-loop composite control method for moisture of sintering mixture |
| CN113457540A (en) * | 2021-06-30 | 2021-10-01 | 重庆花喜鹊科技有限公司 | Intelligent water control system and method for sintering mixture |
| CN113485473A (en) * | 2021-07-02 | 2021-10-08 | 重庆科技学院 | Intelligent water control method for sintering mixture |
-
2015
- 2015-01-27 CN CN201510041796.XA patent/CN105986118A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108133106A (en) * | 2017-12-21 | 2018-06-08 | 山东诺德能源科技有限公司 | A kind of method for the moisture that mixture of sintering machine is estimated according to amount of water |
| CN108133106B (en) * | 2017-12-21 | 2021-07-13 | 山东诺德能源科技有限公司 | Method for estimating moisture content of sintering machine mixture according to water addition amount |
| CN108300852A (en) * | 2018-02-27 | 2018-07-20 | 首钢京唐钢铁联合有限责任公司 | A kind of pelletizing mixture moisture control device and method |
| CN112725614A (en) * | 2020-12-21 | 2021-04-30 | 安徽长江钢铁股份有限公司 | Method for controlling water content of sinter mixture |
| CN113238478A (en) * | 2021-05-14 | 2021-08-10 | 武汉工程大学 | Feedforward and closed-loop composite control method for moisture of sintering mixture |
| CN113457540A (en) * | 2021-06-30 | 2021-10-01 | 重庆花喜鹊科技有限公司 | Intelligent water control system and method for sintering mixture |
| CN113457540B (en) * | 2021-06-30 | 2022-10-04 | 重庆花喜鹊科技有限公司 | Intelligent water control system and method for sintering mixture |
| CN113485473A (en) * | 2021-07-02 | 2021-10-08 | 重庆科技学院 | Intelligent water control method for sintering mixture |
| CN113485473B (en) * | 2021-07-02 | 2023-04-21 | 重庆科技学院 | Intelligent water control method for sintering mixture |
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