CN110055407A - A kind of method for adjusting rotation speed and device for pelletizer - Google Patents
A kind of method for adjusting rotation speed and device for pelletizer Download PDFInfo
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- CN110055407A CN110055407A CN201910351262.5A CN201910351262A CN110055407A CN 110055407 A CN110055407 A CN 110055407A CN 201910351262 A CN201910351262 A CN 201910351262A CN 110055407 A CN110055407 A CN 110055407A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
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Abstract
The invention discloses a kind of method for adjusting rotation speed and device for pelletizer, which includes: the initial proportion and current amount of water that target green-ball is generated in the balling-up region for obtain current balling-up period pelletizer；If the amount of water is less than or equal to default minimum amount of water, and initial proportion is greater than default highest rate, starts the revolving speed for adjusting pelletizer；If the difference of the current rotating speed of pelletizer and default adjustment amplitude is greater than default minimum speed, the current rotating speed of pelletizer is lowered into default adjustment amplitude；After being spaced the second preset duration, the update ratio that target green-ball is generated in balling-up region described in the current balling-up period is obtained；If the ratio of update is greater than minimum ratio of presetting, and is less than or equal to default highest rate, control pelletizer is run with current rotating speed.In the method for adjusting rotation speed, situation is actually generated according to green-ball in the pelletizer obtained in real time, the revolving speed of pelletizer is adjusted, the accuracy of adjusting is higher.
Description
Technical field
The present invention relates to pelletizing production technical field more particularly to a kind of method for adjusting rotation speed and dress for pelletizer
It sets.
Background technique
Currently, Pelletizing Process mainly includes shaft furnace process, belt type roasting machine method and grate kiln method.In China,
It is in the majority using grate kiln method in iron ore pellets production line, wherein pelletizing process is the weight of iron ore pellets production line
Want process.
Pelletizer is the core production equipment of pelletizing process, for example, disc balling machine and pelletising drum, in middle and small scale
It is in the majority with disc balling machine in pellet production line.When pelletizer works, material is on pelletizer respectively along respectively different tracks
Movement forms the different green-ball of diameter, and green-ball is discharged from pelletizer after reaching some strength, falls into subsequent green-ball
In catching device.The balling ratio of pelletizer is the key parameter of pelletizing process, and under the premise of guaranteeing quality of green pellets, balling ratio is got over
The yield of height, green-ball is higher.
In the process of work, the revolving speed of pelletizer is a key factor for influencing green-ball balling ratio to pelletizer, in order to
The balling ratio for improving pelletizer, according to the practical condition of green-ball, the accurate revolving speed for adjusting pelletizer is most important.Existing skill
In art, generally according to the adjusting information that worker inputs with knowhow, the revolving speed of pelletizer is adjusted, the accuracy of adjusting is poor,
The balling ratio of green-ball is caused to fluctuate larger, the yield and quality of green-ball is all unstable.
Therefore, the existing method for adjusting rotation speed for pelletizer, the accuracy of adjusting is poor, leads to the balling ratio of green-ball
Fluctuate larger, the yield and quality of green-ball is all unstable.
Summary of the invention
The present invention provides a kind of method for adjusting rotation speed and device for pelletizer, existing for pelletizer to solve
Method for adjusting rotation speed, the accuracy of adjusting is poor, cause green-ball balling ratio fluctuate it is larger, the yield and quality of green-ball is not
Stable problem.
In a first aspect, the present invention provides a kind of method for adjusting rotation speed for pelletizer, which includes:
Obtain the initial proportion that target green-ball is generated in the balling-up region of current balling-up period pelletizer；The current balling-up period refers to
End time is current time, the period of the first preset duration of Shi Changwei；Obtain amount of water current in the pelletizer；Such as
Amount of water described in fruit is less than or equal to default minimum amount of water, and the initial proportion is greater than default highest rate, starts to adjust
The revolving speed of the pelletizer；Generate the current rotating speed of the pelletizer and the difference of default adjustment amplitude；If the difference is big
In default minimum speed, the current rotating speed of the pelletizer is lowered into the default adjustment amplitude；After being spaced the second preset duration,
Obtain the update ratio that target green-ball is generated in balling-up region described in the current balling-up period；If the update ratio is greater than default
Minimum ratio, and it is less than or equal to the default highest rate, it controls the pelletizer and is run with current rotating speed.
Further, method for adjusting rotation speed further include: if the update ratio is greater than the default highest rate, again
The step of executing the difference of the current rotating speed and default adjustment amplitude that generate the pelletizer and subsequent step, until current
The update ratio that target green-ball is generated in balling-up region described in the balling-up period is greater than minimum ratio of presetting, and is less than or equal to described
When default highest rate, controls the pelletizer and run with current rotating speed；Alternatively, until the current rotating speed of the pelletizer and pre-
If the difference of the amplitude of adjustment is less than or equal to the default minimum speed, the pelletizer is controlled with the default minimum speed
Operation.
Further, method for adjusting rotation speed further include: if the difference is less than or equal to the default minimum speed, control
The pelletizer is made to run with the default minimum speed.
Further, method for adjusting rotation speed further include: if the amount of water is less than or equal to the default minimum plus water
Amount, and the initial proportion is less than or equal to the default highest rate, obtains the current rotating speed of the pelletizer；If described
The current rotating speed of pelletizer is less than preset standard revolving speed, controls the pelletizer and is run with the preset standard revolving speed.
Further, the mistake that the initial proportion of target green-ball is generated in the balling-up region of current balling-up period pelletizer is obtained
Journey specifically includes: obtaining the image in the balling-up region of the pelletizer generated in the current balling-up period；Worked as according to described image acquisition
The initial proportion of target green-ball is generated in balling-up region described in the preceding balling-up period.
Second aspect, the present invention also provides a kind of speed setting unit for pelletizer, the speed setting unit packets
Include: initial proportion obtains module, generates the initial of target green-ball in the balling-up region for obtaining current balling-up period pelletizer
Ratio；The current balling-up period refers to that end time is current time, the period of the first preset duration of Shi Changwei；Amount of water
Module is obtained, for obtaining amount of water current in the pelletizer；First processing module, if be less than for the amount of water
Or it is equal to default minimum amount of water, and the initial proportion is greater than default highest rate, starts the revolving speed for adjusting the pelletizer；
Difference generation module, for generating the current rotating speed of the pelletizer and the difference of default adjustment amplitude；Second processing module is used
If being greater than default minimum speed in the difference, the current rotating speed of the pelletizer is lowered into the default adjustment amplitude；More
New ratio obtains module, after being spaced the second preset duration, obtains in balling-up region described in the current balling-up period and generates target
The update ratio of green-ball；Third processing module is preset minimum ratio if be greater than for the update ratio, and is less than or equal to
The default highest rate is controlled the pelletizer and is run with current rotating speed.
Further, speed setting unit further include: fourth processing module is used for: if the update ratio is greater than institute
The step of stating default highest rate, re-executing the difference of the current rotating speed and default adjustment amplitude that generate the pelletizer, with
And subsequent step, until the update ratio for generating target green-ball in balling-up region described in the current balling-up period, which is greater than, presets minimum ratio
Example, and be less than or equal to the default highest rate when, control the pelletizer and run with current rotating speed；Alternatively, until described
When the difference of the current rotating speed of pelletizer and default adjustment amplitude is less than or equal to the default minimum speed, the pelletizing is controlled
Machine is run with the default minimum speed.
Further, speed setting unit further include: the 5th processing module is used for: if the difference is less than or equal to
The default minimum speed is controlled the pelletizer and is run with the default minimum speed.
Further, speed setting unit further include: the 6th processing module is used for: if the amount of water is less than or waits
In the default minimum amount of water, and the initial proportion is less than or equal to the default highest rate, obtains the pelletizer
Current rotating speed；If the current rotating speed of the pelletizer is less than preset standard revolving speed, the pelletizer is controlled with described default
Rated rotational frequency operation.
Further, the initial proportion obtains module, is specifically used for: obtaining the pelletizer generated in the current balling-up period
The image in balling-up region；According to described image obtain the current balling-up period described in the initial ratio of target green-ball is generated in balling-up region
Example.
The technical solution that the embodiment of the present invention provides can include the following benefits: the present invention provides one kind to be used for
The method for adjusting rotation speed and device of pelletizer.In the method for adjusting rotation speed, the balling-up of current balling-up period pelletizer is obtained first
Amount of water current in the initial proportion and pelletizer of target green-ball is generated in region；Later, when the amount of water is less than or waits
In default minimum amount of water, and when the initial proportion is greater than default highest rate, if the current rotating speed of pelletizer and default
The difference of adjustment amplitude is greater than default minimum speed, then the current rotating speed of pelletizer is lowered the default adjustment amplitude；Then,
After being spaced the second preset duration, if the update ratio for generating target green-ball in balling-up region described in the current balling-up period is greater than
Minimum ratio is preset, and is less than or equal to the default highest rate, then controls the pelletizer and is run with current rotating speed.
Secondly, when the amount of water is less than or equal to default minimum amount of water, and the initial proportion is less than or equal to institute
When stating default highest rate, if the current rotating speed of the pelletizer be less than preset standard revolving speed, control the pelletizer with
The preset standard revolving speed operation；Or when the amount of water is greater than the default minimum amount of water, pelletizer is not turned
Speed is adjusted.
In addition, if the update ratio is greater than the default highest rate, redefine the pelletizer works as forward
It is fast whether to be greater than default minimum speed with default adjustment amplitude difference, and the case where the difference is greater than default minimum speed
Under, the current rotating speed of pelletizer is lowered into default adjustment amplitude, until generating target in balling-up region described in the current balling-up period
When the update ratio of green-ball is greater than presetting minimum ratio, and being less than or equal to the default highest rate, the pelletizer is controlled
It is run with current rotating speed；Alternatively, until the current rotating speed of the pelletizer and the difference of default adjustment amplitude are less than or equal to institute
When stating default minimum speed, controls the pelletizer and run with the default minimum speed.
It follows that the method for adjusting rotation speed provided in an embodiment of the present invention for pelletizer, after adjusting starts, according to
The initial proportion of target green-ball and the case where current amount of water in pelletizer, it is determined whether the current rotating speed of pelletizer is adjusted
Section, and according to the current rotating speed of pelletizer and the difference of default adjustment amplitude and the update ratio of target green-ball, determination pair
The mode that the current rotating speed of pelletizer is adjusted.As it can be seen that in the method for adjusting rotation speed, according to raw in the pelletizer obtained in real time
Ball actually generates situation, and the revolving speed of pelletizer is adjusted, and the accuracy of adjusting is higher, so that the balling-up of green-ball
Rate and the yield and quality of green-ball are also more stable.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the speed adjustment system for pelletizer provided in an embodiment of the present invention；
Fig. 2 is the exemplary diagram of green-ball globulation in a kind of pelletizer provided in an embodiment of the present invention；
Fig. 3 is a kind of flow diagram of the method for adjusting rotation speed for pelletizer provided in an embodiment of the present invention；
Fig. 4 is a kind of structural block diagram of the speed setting unit for pelletizer provided in an embodiment of the present invention.
Specific embodiment
In conjunction with background technique it is found that in the prior art, according to the adjusting information that execute-in-place worker inputs with knowhow,
Adjust the revolving speed of pelletizer.But, since the knowhow of worker is irregular, lead to the adjusting letter according to knowhow input
Cease unstable, accuracy is poor, so that the accuracy of pelletizer rotational speed regulation is also poor, fluctuates so as to cause the balling ratio of green-ball
Larger, the yield and quality of green-ball is all unstable.In order to solve this problem, turn the present invention provides a kind of for pelletizer
Velocity modulation section method and device.
With reference to the accompanying drawing, the method for adjusting rotation speed and device provided by the present invention for pelletizer is discussed in detail.
Before introducing provided by the present invention for the method for adjusting rotation speed and device of pelletizer, it is real that the present invention is introduced first
A kind of speed adjustment system for pelletizer for applying example offer, can be implemented provided by the invention using the speed adjustment system
Method for adjusting rotation speed for pelletizer.
Referring to Fig. 1, shown in fig. 1 is a kind of knot of speed adjustment system for pelletizer provided in an embodiment of the present invention
Structure schematic diagram.In conjunction with Fig. 1 it is found that the speed adjustment system includes: disc balling machine 1, industrial camera 2, control device 3, water spray
Pipe 4, flow control valve 5, flowmeter 6, burden balance 7, feed bin 8 and green-ball conveying device 9.Wherein, disc balling machine 1 is for receiving
The water that the material and sparge pipe 4 that feed bin 8 is conveyed by burden balance 7 spray into, generates green-ball using the material and water；Control device 3
It is connected with disc balling machine 1, the revolving speed of disc balling machine 1 can be adjusted.Industrial camera 2 is for shooting disk pelletizing
The image in the corresponding balling-up region of machine 1；Control device 3 is connected with industrial camera 2 by cable or optical cable, for passing through industry
The image that camera 2 is shot, obtains the balling-up situation of green-ball.Flow control valve 5 and flowmeter 6 are all set on sparge pipe 4, and
It is connected with control device 3, for adjusting the amount of water sprayed of sparge pipe 4, to adjust the amount of water being added in disc balling machine 1.
Burden balance 7 are used to receive the material of the output of feed bin 8, and the material is delivered in disc balling machine 1 and carries out pelletizing；Control device
3 are connected with burden balance 7, for controlling the revolving speed of burden balance 7, to control the charging rate of burden balance 7, and then adjust and enter
Inlet amount in disc balling machine 1.Green-ball conveying device 9 is used to receive the green-ball of the generation of disc balling machine 1, and exports the life
Ball.
It should be noted that the disc balling machine 1 in the speed adjustment system could alternatively be pelletising drum, the present invention
This is not limited.
Referring to fig. 2, Fig. 2 shows be green-ball globulation in a kind of pelletizer provided in an embodiment of the present invention example
Figure.In conjunction with Fig. 2 it is found that material enters burden balance 7 from feed bin 8, and after the discharge of burden balance 7, entered shots 10 and fall into disk to make
The balling disk (-sc) 11 of ball machine 1 makees the movement of track shown in Fig. 2 according to the rotation situation of balling disk (-sc) 11 in balling disk (-sc) 11 at random, raw
At green-ball not of uniform size.The green-ball generated in balling disk (-sc) 11 in balling disk (-sc) 11 after being discharged, after the blocking of baffle 12, from out
Ball region 13 is fallen in green-ball conveying device 9, is exported by green-ball conveying device 9.
With reference to Fig. 2, in the green-ball production process of pelletising drum, material enters the pelletizing of pelletising drum through pan feeding point
In cylinder, green-ball not of uniform size is generated in pelletizing cylinder, later, green-ball is discharged from pelletizing cylinder, after baffle, from out
Ball region is fallen in green-ball conveying device 9, is exported by green-ball conveying device 9.
In the embodiment of the present invention, by what is generated in pelletizer (such as disc balling machine 1 shown in fig. 1), diameter be greater than or
Equal to the green-ball of preset threshold, it is denoted as molding green-ball.Wherein, preset threshold can be configured according to practical application scene, example
Such as, [0.5,8] mm the value range of preset threshold can be set to optionally to set preset threshold in the embodiment of the present invention
It is set to 5mm.
Secondly, the molding green-ball generated in pelletizer is divided into five types, is respectively as follows: not in the embodiment of the present invention
Qualified bead, qualified bead, ball, qualified big ball and unqualified big ball in qualification；Also, it by unqualified bead, qualified bead, closes
The diameter of ball, qualified big ball and unqualified big ball is denoted as d1, d2, d3, d4 and d5 respectively in lattice.Wherein, 5mm≤d1 < 8mm,
8mm≤d2≤11mm, 11mm < d3≤14mm, 14mm < d4≤16mm, d5 > 16mm.It should be noted that molding green-ball
Type divides and the value range of every kind of green-ball diameter, can be set according to practical application scene, the present invention is to this
Without limiting.
In addition, having in balling disk (-sc) 11 qualified green-ball is generated in a region (including ball and qualification are big in qualified bead, qualification
Ball) quantity be far longer than the quantity of other Area generation qualification green-balls in balling disk (-sc) 11, in the embodiment of the present invention, by the region
It is denoted as balling-up stability region.The range of balling-up stability region can also be determined according to practical application scene.For example, Fig. 2 institute
The shadow region 14 on balling disk (-sc) 11 shown is the balling-up stability region of the balling disk (-sc) 11, is generated in the shadow region 14 qualified raw
The quantity of ball is far longer than the quantity that qualified green-ball is generated in other regions of balling disk (-sc) 11.
A kind of stream of method for adjusting rotation speed for pelletizer provided in an embodiment of the present invention is shown referring to Fig. 3, Fig. 3
Journey schematic diagram.The method for adjusting rotation speed is used for control device (such as control device 3 shown in Fig. 1), it is found that should in conjunction with Fig. 3
Method for adjusting rotation speed includes:
Step 101 obtains the initial proportion that target green-ball is generated in the balling-up region of current balling-up period pelletizer.
Wherein, the current balling-up period refers to that end time is current time, the period of the first preset duration of Shi Changwei.The
One preset duration can be configured according to practical application scene, for example, can set the first preset duration to 1 minute.Mesh
Mark green-ball is unqualified big ball.
For disc balling machine (such as disc balling machine 1 shown in Fig. 1), balling-up region can be the disk pelletizing
The corresponding balling-up stability region of machine (such as balling-up stable range 14 shown in Figure 2), or the disc balling machine is corresponding
Go out ball region (such as shown in Figure 2 go out ball region 13).For pelletising drum, balling-up region can make for the cylinder
The corresponding ball region out of ball machine.
When it is implemented, obtaining the initial proportion for generating target green-ball in the balling-up region of current balling-up period pelletizer
Process specifically includes: obtaining the image in the balling-up region of the pelletizer generated in the current balling-up period；It is obtained according to described image
The initial proportion of target green-ball is generated in balling-up region described in the current balling-up period.
Further, the image for obtaining the balling-up region of the pelletizer generated in the current balling-up period, can be according to following sides
Formula is realized: using industrial camera (such as industrial camera 2 shown in Fig. 1) according to certain shooting period (such as at interval of 3 seconds
Shooting is primary) image in shooting balling-up region；Then, control device obtains industrial camera in the current balling-up period from industrial camera
All images in the balling-up region of shooting.
In some other optional embodiment, industrial camera after unlatching, just according to certain shooting period (such as
Taken the photograph once at interval of 3 second beats) image in balling-up region is shot, and the image of shooting is stored according to shooting time to preset and is deposited
In storage device, for example, the image of shooting can be stored in the form of database into preset storage device.Based on this, obtain
The image for taking the balling-up region of the pelletizer generated in the current balling-up period, can also realize in the following manner: from preset
The image in the balling-up region of the pelletizer shot in the current balling-up period is read in storage device.
Further, according to described image obtain the current balling-up period described in the initial ratio of target green-ball is generated in balling-up region
Example, can realize in the following manner: control device counts the institute in the balling-up region that industrial camera is shot in the current balling-up period
Have and forms the quantity of green-ball and the quantity of target green-ball in image；Then, control device calculates the number for generating the target green-ball
The ratio of amount and the quantity of the molding green-ball, the ratio is raw as target is generated in balling-up region described in the current balling-up period
The initial proportion of ball.
Further, control device count in all images in the balling-up region that industrial camera in the current balling-up period is shot at
The quantity of type green-ball and the quantity of target green-ball, can realize in the following manner: firstly, control device counts current balling-up week
The unqualified bead that includes in all images in the balling-up region of interim industrial camera shooting, qualified bead, ball, qualification in qualification
The quantity of big ball and unqualified big ball, by ball, qualification ball and unqualified big ball greatly in unqualified bead, qualified bead, qualification
Quantity is denoted as n1, n2, n3, n4 and n5 respectively, wherein the quantity of unqualified big ball is the quantity of target green-ball；Then, it controls
Device uses following formula N=n1+n2+n3+n4+n5, calculates the balling-up area for generating industrial camera shooting in the current balling-up period
The quantity of green-ball is formed in all images in domain, wherein N indicates the quantity of the molding green-ball.
Further, control device calculates the ratio of the quantity of the quantity for generating the target green-ball and the molding green-ball,
Can realize in the following manner: control device uses following formula η=n5/N, calculate generate the quantity of the target green-ball with
The ratio of the quantity of the molding green-ball.Wherein, η indicates the ratio of the quantity of the target green-ball and the quantity of the molding green-ball
Example, i.e., the described initial proportion.
In some other optional embodiment, industrial camera after unlatching, just according to certain shooting period (such as
Taken the photograph once at interval of 3 second beats) shooting balling-up region image, control device in real time from industrial camera obtain industrial camera shooting
Image, and count unqualified bead in each frame image, qualified bead, ball in qualification, qualified big ball and unqualified big ball
Quantity, later, control device is by ball, qualification ball greatly in the corresponding unqualified bead of each frame image, qualified bead, qualification and not
The quantity of qualified big ball is corresponded to and is stored into preset storage device according to the shooting time of the frame image, for example, can incite somebody to action
The corresponding unqualified bead of each frame image of shooting, qualified bead, in qualification ball, qualified big ball and unqualified big ball number
Amount, according to the shooting time of the frame image, in the form of database, correspondence is stored into preset storage device.Based on this, walk
Rapid 101 can also realize in the following manner: obtain that target shooting time is corresponding all not to be conformed to from preset storage device
The quantity of the big ball of lattice, is denoted as the first quantity, and obtains the quantity of the corresponding all molding green-balls of the target shooting time, note
For the second quantity；The ratio for generating first quantity and second quantity is calculated, using the ratio as the current balling-up period
The initial proportion of target green-ball is generated in the balling-up region of pelletizer；Wherein, target shooting time referred to positioned at current balling-up week
Shooting time in phase.Using such implementation, balling-up described in the current balling-up period more quickly can be accurately got
The initial proportion of target green-ball is generated in region, applicability is more preferable.
Step 102 obtains amount of water current in the pelletizer.
When it is implemented, control device can be from the flow being set on sparge pipe (such as sparge pipe 4 shown in Fig. 1)
It counts and reads amount of water current in sparge pipe addition pelletizer in (such as flowmeter 6 shown in Fig. 1).
If step 103, the amount of water are less than or equal to default minimum amount of water, and the initial proportion is greater than default
Highest rate starts the revolving speed for adjusting the pelletizer, then executes step 105.
Wherein, presetting minimum amount of water can be configured according to practical application scene, for example, default minimum can be added
The value range of water is set as [0.1t/h, 0.3t/h], optionally, can be by default minimum plus water in the embodiment of the present invention
Amount is set as 0.2t/h (ton/hour).Default highest rate can also be configured according to practical application scene, optionally, this
In inventive embodiments, 15% is set by default highest rate.
If step 104, the amount of water are greater than the default minimum amount of water, terminate current rotational speed regulation process.
If current amount of water is greater than the default minimum amount of water in pelletizer, the revolving speed of pelletizer is not carried out
It adjusts, terminates current rotational speed regulation process.
The difference of step 105, the current rotating speed for generating the pelletizer and default adjustment amplitude.
After the revolving speed for starting to adjust the pelletizer, control device obtains the current rotating speed of pelletizer first, then calculates
Generate the current rotating speed of pelletizer and the difference of default adjustment amplitude.Wherein, presetting adjustment amplitude can be according to practical application field
Scape is configured.For example, [0.5r/min, 3r/min] can be set by the value range of default adjustment amplitude, optionally, this
In inventive embodiments, 1r/min (rev/min) can be set by default adjustment amplitude.
In some alternative embodiments, following formula V=V0-V1 can be used, calculate and generate working as the pelletizer
The difference of preceding revolving speed and default adjustment amplitude.Wherein, V indicates the current rotating speed of the pelletizer and the difference of default adjustment amplitude
Value；V0 indicates the current rotating speed of the pelletizer；V1 indicates the default adjustment amplitude.
If step 106, the difference are greater than default minimum speed, the current rotating speed of the pelletizer is lowered described pre-
If then the amplitude of adjustment executes step 108.
Wherein, default minimum speed can be configured according to practical application scene.For example, in the embodiment of the present invention, it can
To set 5.5r/min (rev/min) for default minimum speed.
If step 107, the difference are less than or equal to the default minimum speed, the pelletizer is controlled with described pre-
If minimum speed is run.
In some alternative embodiments, after the revolving speed for starting to adjust the pelletizer, if the pelletizer is current
The difference of revolving speed and default adjustment amplitude is less than or equal to default minimum speed, then control the pelletizer with it is described preset it is minimum
Revolving speed continuous service.
After step 108, the second preset duration of interval, generation target green-ball in balling-up region described in the current balling-up period is obtained
Update ratio.
After the current rotating speed of pelletizer is lowered default adjustment amplitude, need to reserve one section of adjustment time, so as in pelletizing
After machine operating is stablized, then the generation situation of object observing green-ball, to improve the accuracy of adjusting.Based on this, by pelletizer
Current rotating speed lower default adjustment amplitude after, after being spaced the second preset duration, obtain balling-up region described in the current balling-up period
The ratio of the updated quantity of molding green-ball is generated in the middle updated quantity for generating target green-ball and the balling-up region, i.e.,
The update ratio of target green-ball is generated in balling-up region described in the current balling-up period.
Wherein, the second preset duration can be configured according to practical application scene.For example, can be by the second preset duration
Value range be set as [30s, 90s], optionally, in the embodiment of the present invention, set 40s (second) for the second preset duration.
When it is implemented, obtaining the specific of the update ratio for generating target green-ball in balling-up region described in the current balling-up period
Implementation, can be with reference to generation target green-ball in the balling-up region for obtaining current balling-up period pelletizer in previous embodiment
The specific implementation of initial proportion, and will not be described here in detail.
If step 109, the update ratio are greater than minimum ratio of presetting, and are less than or equal to the default highest ratio
Example, is controlled the pelletizer and is run with current rotating speed.
If the update ratio for generating target green-ball in balling-up region described in the current balling-up period is big after reduction of speed is adjusted
In presetting minimum ratio, and it is less than or equal to default highest rate, illustrates that the condition of production that green-ball is current in pelletizer is in reason
The stable state thought, the yield and quality of qualified green-ball are in relatively stable state, and the balling ratio of qualified green-ball is also higher.
Based on this, pelletizer can control with current revolving speed continuous service.
Wherein, presetting minimum ratio can be configured according to practical application scene, but be necessary for nonnegative value, optionally,
In the embodiment of the present invention, can will preset minimum ratio setting is 0.
If step 110, the update ratio are greater than the default highest rate, it re-execute the steps 105.
In some alternative embodiments, raw in balling-up region described in the current balling-up period if after reduction of speed is adjusted
Default highest rate is still greater than at the update ratio of target green-ball, the condition of production for illustrating that green-ball is current in pelletizer is still located
Unstable in the yield and quality of nonideality, qualified green-ball, the balling ratio of qualified green-ball is relatively low.Based on this, if
After reduction of speed is adjusted and is spaced the second preset duration, the update of target green-ball is generated in balling-up region described in the current balling-up period
Default highest rate is still greater than in ratio, then re-executes the difference of the current rotating speed Yu default adjustment amplitude that generate the pelletizer
The step of value and subsequent step, until the update ratio for generating target green-ball in balling-up region described in the current balling-up period is big
When presetting minimum ratio, and be less than or equal to the default highest rate, controls the pelletizer and run with current rotating speed；Or
Person, until when the difference of the current rotating speed of the pelletizer and default adjustment amplitude is less than or equal to the default minimum speed,
The pelletizer is controlled to run with the default minimum speed.
In some other optional embodiment, mesh is generated in the balling-up region for getting current balling-up period pelletizer
After marking amount of water current in the initial proportion and pelletizer of green-ball, the method for adjusting rotation speed further include: if the amount of water
Less than or equal to the default minimum amount of water, and the initial proportion is less than or equal to the default highest rate, obtains institute
State the current rotating speed of pelletizer；If the current rotating speed of the pelletizer be less than preset standard revolving speed, control the pelletizer with
The preset standard revolving speed operation.
Wherein, preset standard revolving speed can be configured according to practical application scene, for example, in the embodiment of the present invention, it can
To set 7.0r/min (rev/min) for preset standard revolving speed.
In method for adjusting rotation speed provided in an embodiment of the present invention for pelletizer, current balling-up period pelletizing is obtained first
Amount of water current in the initial proportion and pelletizer of target green-ball is generated in the balling-up region of machine；Later, when the amount of water
Less than or equal to default minimum amount of water, and when the initial proportion is greater than default highest rate, if pelletizer works as forward
The fast difference with default adjustment amplitude is greater than default minimum speed, then the current rotating speed of pelletizer is lowered the default adjustment width
Degree；Then, after being spaced the second preset duration, if generating the update of target green-ball in balling-up region described in the current balling-up period
Ratio is greater than minimum ratio of presetting, and is less than or equal to the default highest rate, then controls the pelletizer with current rotating speed
Operation.
Secondly, when the amount of water is less than or equal to default minimum amount of water, and the initial proportion is less than or equal to institute
When stating default highest rate, if the current rotating speed of the pelletizer be less than preset standard revolving speed, control the pelletizer with
The preset standard revolving speed operation；Or when the amount of water is greater than the default minimum amount of water, pelletizer is not turned
Speed is adjusted.
In addition, if the update ratio is greater than the default highest rate, redefine the pelletizer works as forward
It is fast whether to be greater than default minimum speed with default adjustment amplitude difference, and the case where the difference is greater than default minimum speed
Under, the current rotating speed of pelletizer is lowered into default adjustment amplitude, until generating target in balling-up region described in the current balling-up period
When the update ratio of green-ball is greater than presetting minimum ratio, and being less than or equal to the default highest rate, the pelletizer is controlled
It is run with current rotating speed；Alternatively, until the current rotating speed of the pelletizer and the difference of default adjustment amplitude are less than or equal to institute
When stating default minimum speed, controls the pelletizer and run with the default minimum speed.
It follows that the method for adjusting rotation speed provided in an embodiment of the present invention for pelletizer, after adjusting starts, according to
The initial proportion of target green-ball and the case where current amount of water in pelletizer, it is determined whether the current rotating speed of pelletizer is adjusted
Section, and according to the current rotating speed of pelletizer and the difference of default adjustment amplitude and the update ratio of target green-ball, determination pair
The mode that the current rotating speed of pelletizer is adjusted.As it can be seen that in the method for adjusting rotation speed, according to raw in the pelletizer obtained in real time
Ball actually generates situation, and the revolving speed of pelletizer is adjusted, and the accuracy of adjusting is higher, so that the balling-up of green-ball
Rate and the yield and quality of green-ball are also more stable.
Corresponding with the above-mentioned method for adjusting rotation speed for pelletizer, the embodiment of the invention also discloses one kind to be used for pelletizing
The speed setting unit of machine.
Referring to fig. 4, Fig. 4 shows a kind of knot of speed setting unit for pelletizer provided in an embodiment of the present invention
Structure block diagram.The speed setting unit can be used for control device (such as control device 3 shown in Fig. 1), or the control
Device processed, the application are not limited this.In conjunction with Fig. 4 it is found that the speed setting unit includes:
Initial proportion obtains module 401, and it is raw to generate target in the balling-up region for obtaining current balling-up period pelletizer
The initial proportion of ball；The current balling-up period refers to that end time is current time, the time of the first preset duration of Shi Changwei
Section；Amount of water obtains module 402, for obtaining amount of water current in the pelletizer；First processing module 403, for such as
Amount of water described in fruit is less than or equal to default minimum amount of water, and the initial proportion is greater than default highest rate, starts to adjust
The revolving speed of the pelletizer；Difference generation module 404, for generating the current rotating speed and default adjustment amplitude of the pelletizer
Difference；Second processing module 405, if being greater than default minimum speed for the difference, by the current rotating speed of the pelletizer
Lower the default adjustment amplitude；Update ratio obtains module 406, after being spaced the second preset duration, obtains current balling-up
The update ratio of target green-ball is generated in balling-up region described in period；Third processing module 407, if being used for the update ratio
Greater than presetting minimum ratio, and it is less than or equal to the default highest rate, controls the pelletizer and run with current rotating speed.
Further, speed setting unit further include: fourth processing module 408 is used for: if the update ratio is greater than
The default highest rate, re-execute generate the pelletizer current rotating speed and default adjustment amplitude difference the step of,
And subsequent step, until the update ratio for generating target green-ball in balling-up region described in the current balling-up period is minimum greater than presetting
Ratio, and be less than or equal to the default highest rate when, control the pelletizer and run with current rotating speed；Alternatively, until institute
When the difference of the current rotating speed and default adjustment amplitude of stating pelletizer is less than or equal to the default minimum speed, made described in control
Ball machine is run with the default minimum speed.
Further, speed setting unit further include: the 5th processing module 409 is used for: if the difference is less than or waits
In the default minimum speed, controls the pelletizer and run with the default minimum speed.
Further, speed setting unit further include: the 6th processing module 410 is used for: if the amount of water be less than or
Equal to the default minimum amount of water, and the initial proportion is less than or equal to the default highest rate, obtains the pelletizing
The current rotating speed of machine；If the current rotating speed of the pelletizer is less than preset standard revolving speed, the pelletizer is controlled with described pre-
If rated rotational frequency is run.
Further, the initial proportion obtains module 401, is specifically used for: obtaining the pelletizing generated in the current balling-up period
The image in the balling-up region of machine；According to described image obtain the current balling-up period described in generate in balling-up region target green-ball just
Beginning ratio.
Using the speed setting unit provided in an embodiment of the present invention for pelletizer, it is possible to implement above-mentioned to be used for pelletizer
Method for adjusting rotation speed in each step, and obtain identical beneficial effect.It is provided in an embodiment of the present invention for pelletizer
Speed setting unit, after adjusting starts, the case where according to the initial proportion of target green-ball in pelletizer and current amount of water, really
It is fixed whether the current rotating speed of pelletizer to be adjusted, and according to the difference of the current rotating speed of pelletizer and default adjustment amplitude
The update ratio of value and target green-ball determines the mode that the current rotating speed of pelletizer is adjusted.As it can be seen that the revolving speed tune
Regulating device actually generates situation according to green-ball in the pelletizer obtained in real time, the revolving speed of pelletizer is adjusted, adjusting
Accuracy is higher, so that the balling ratio of green-ball and the yield and quality of green-ball are also more stable.
In the specific implementation, the computer storage medium can be stored with journey the present invention also provides a kind of computer storage medium
Sequence, the program may include when executing part in each embodiment provided by the present invention for the method for adjusting rotation speed of pelletizer or
Overall Steps.The storage medium can be magnetic disk, CD, read-only memory (English: read-only memory, letter
Claim: ROM) or random access memory (English: random access memory, referred to as: RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present invention substantially or
Say that the part that contributes to existing technology can be embodied in the form of software products, which can deposit
Storage is in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that computer equipment (can be with
It is personal computer, server or the network equipment etc.) execute certain part institutes of each embodiment of the present invention or embodiment
The method stated.
Part same and similar between each embodiment may refer to each other in this specification.For the revolving speed for pelletizer
Regulating device embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to method
Explanation in embodiment.Invention described above embodiment is not intended to limit the scope of the present invention..
Claims (10)
1. a kind of method for adjusting rotation speed for pelletizer characterized by comprising
Obtain the initial proportion that target green-ball is generated in the balling-up region of current balling-up period pelletizer；The current balling-up period
Refer to that end time is current time, the period of the first preset duration of Shi Changwei；
Obtain amount of water current in the pelletizer；
If the amount of water is less than or equal to default minimum amount of water, and the initial proportion is greater than default highest rate, opens
Beginning adjusts the revolving speed of the pelletizer；
Generate the current rotating speed of the pelletizer and the difference of default adjustment amplitude；
If the difference is greater than default minimum speed, the current rotating speed of the pelletizer is lowered into the default adjustment amplitude；
After being spaced the second preset duration, the update ratio that target green-ball is generated in balling-up region described in the current balling-up period is obtained；
If the update ratio is greater than minimum ratio of presetting, and is less than or equal to the default highest rate, made described in control
Ball machine is run with current rotating speed.
2. method for adjusting rotation speed as described in claim 1, which is characterized in that the method for adjusting rotation speed further include:
If the update ratio is greater than the default highest rate, re-execute generates the current rotating speed of the pelletizer in advance
If the step of difference of the amplitude of adjustment and subsequent step, until it is raw to generate target in balling-up region described in the current balling-up period
The update ratio of ball, which is greater than, presets minimum ratio, and when being less than or equal to the default highest rate, control the pelletizer with
Current rotating speed operation；Alternatively, until the current rotating speed of the pelletizer and the difference of default adjustment amplitude are less than or equal to described
When default minimum speed, controls the pelletizer and run with the default minimum speed.
3. method for adjusting rotation speed as described in claim 1, which is characterized in that the method for adjusting rotation speed further include:
If the difference is less than or equal to the default minimum speed, controls the pelletizer and transported with the default minimum speed
Row.
4. method for adjusting rotation speed as described in claim 1, which is characterized in that the method for adjusting rotation speed further include:
If the amount of water is less than or equal to the default minimum amount of water, and the initial proportion is less than or equal to described pre-
If highest rate, the current rotating speed of the pelletizer is obtained；
If the current rotating speed of the pelletizer is less than preset standard revolving speed, the pelletizer is controlled with the preset standard revolving speed
Operation.
5. method for adjusting rotation speed as described in claim 1, which is characterized in that obtain the balling-up area of current balling-up period pelletizer
The process that the initial proportion of target green-ball is generated in domain, specifically includes:
Obtain the image in the balling-up region of the pelletizer generated in the current balling-up period；
According to described image obtain the current balling-up period described in the initial proportion of target green-ball is generated in balling-up region.
6. a kind of speed setting unit for pelletizer characterized by comprising
Initial proportion obtains module, generates the initial of target green-ball in the balling-up region for obtaining current balling-up period pelletizer
Ratio；The current balling-up period refers to that end time is current time, the period of the first preset duration of Shi Changwei；
Amount of water obtains module, for obtaining amount of water current in the pelletizer；
First processing module, if being less than or equal to default minimum amount of water for the amount of water, and the initial proportion is big
In default highest rate, start the revolving speed for adjusting the pelletizer；
Difference generation module, for generating the current rotating speed of the pelletizer and the difference of default adjustment amplitude；
Second processing module lowers the current rotating speed of the pelletizer if being greater than default minimum speed for the difference
The default adjustment amplitude；
Update ratio obtains module, after being spaced the second preset duration, obtains raw in balling-up region described in the current balling-up period
At the update ratio of target green-ball；
Third processing module if being greater than minimum ratio of presetting for the update ratio, and is less than or equal to described preset most
At high proportion, the pelletizer is controlled to run with current rotating speed.
7. speed setting unit as claimed in claim 6, which is characterized in that the speed setting unit further include: fourth process
Module is used for: if the update ratio is greater than the default highest rate, re-execute the generation pelletizer works as forward
The step of fast difference with default adjustment amplitude and subsequent step, until being generated in balling-up region described in the current balling-up period
When the update ratio of target green-ball is greater than presetting minimum ratio, and being less than or equal to the default highest rate, made described in control
Ball machine is run with current rotating speed；Alternatively, until the current rotating speed of the pelletizer and the difference of default adjustment amplitude are less than or wait
When the default minimum speed, controls the pelletizer and run with the default minimum speed.
8. speed setting unit as claimed in claim 6, which is characterized in that the speed setting unit further include: the 5th processing
Module is used for: if the difference be less than or equal to the default minimum speed, control the pelletizer with it is described preset it is minimum
Revolving speed operation.
9. speed setting unit as claimed in claim 6, which is characterized in that the speed setting unit further include: the 6th processing
Module is used for:
If the amount of water is less than or equal to the default minimum amount of water, and the initial proportion is less than or equal to described pre-
If highest rate, the current rotating speed of the pelletizer is obtained；
If the current rotating speed of the pelletizer is less than preset standard revolving speed, the pelletizer is controlled with the preset standard revolving speed
Operation.
10. speed setting unit as claimed in claim 6, which is characterized in that the initial proportion obtains module, specific to use
In:
Obtain the image in the balling-up region of the pelletizer generated in the current balling-up period；
According to described image obtain the current balling-up period described in the initial proportion of target green-ball is generated in balling-up region.
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| CN113296561A (en) * | 2020-08-20 | 2021-08-24 | 中冶长天国际工程有限责任公司 | Control system and control method for pelletizer |
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