CN106672632A - Control method, equipment and system for pneumatic conveyor and engineering machinery - Google Patents
Control method, equipment and system for pneumatic conveyor and engineering machinery Download PDFInfo
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- CN106672632A CN106672632A CN201510755792.8A CN201510755792A CN106672632A CN 106672632 A CN106672632 A CN 106672632A CN 201510755792 A CN201510755792 A CN 201510755792A CN 106672632 A CN106672632 A CN 106672632A
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- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000010926 purge Methods 0.000 claims description 15
- 238000012840 feeding operation Methods 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 10
- 230000004913 activation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
Abstract
The invention provides a control method, equipment and system for a pneumatic conveyor and engineering machinery. The control method comprises the following steps: receiving pressure value at a conveyor pipeline of the pneumatic conveyor; and under the circumstance that the pressure value is larger than or equal to the maximum working pressure value, adjusting the feeding quantity of the pneumatic conveyor according to the increment and the increment threshold of the pressure value received within unit time. According to the control method, the feeding quantity can be always kept within a reasonable range, so that the blocking probability is greatly reduced, and accordingly, the pneumatic conveyor is timely, accurately and effectively prevented from blockage.
Description
Technical field
The present invention relates to engineering machinery field, in particular it relates to a kind of control for Pneumatic conveyer
Method processed, a kind of a kind of control device, control for Pneumatic conveyer for Pneumatic conveyer
System processed and a kind of engineering machinery.
Background technology
Pneumatic conveyer needs to dredge transfer pipeline during conveying material, to avoid blocking up
Material.And adopt more existing control method and held controlling bypass according to the change of the pressure value at transfer pipeline
The action of units (is for example worked with being dredged to transfer pipeline according to the pressure value and default minimum
Pressure, maximum working pressure (MWP), the magnitude relationship of safe pressure).But this method of the prior art,
Still when pressure that can be at transfer pipeline reaches safe pressure, there is material bolt, result in putty, and
Can not effectively be dredged before plugging is formed.
Lack in prior art can in time, accurately, be effectively prevented from Pneumatic conveyer appearance
The control method of putty, equipment and system.
The content of the invention
For lack in prior art can in time, accurately, effectively Pneumatic conveyer occur
The technical problem of the control method, equipment and system of putty, the invention provides a kind of be used for gas
The control method of power conveying device, the method includes：Receive the transfer pipeline of the Pneumatic conveyer
The pressure value at place；And in the case where the pressure value is more than or equal to maximum working pressure force value, root
The Pneumatic conveyer is adjusted according to the increment and delta threshold of the pressure value received in the unit interval
Inlet amount.
Correspondingly, present invention also offers a kind of control device for Pneumatic conveyer, the equipment
Including：Receiver, for the pressure value at the transfer pipeline for receiving the Pneumatic conveyer；And
Controller, for the pressure value be more than or equal to maximum working pressure force value in the case of according to unit
The increment and delta threshold of the pressure value received in the time is adjusting the charging of the Pneumatic conveyer
Amount.
Correspondingly, present invention also offers a kind of control system for Pneumatic conveyer, the system
Including：Pressure sensor, for the pressure value at the transfer pipeline for detecting the Pneumatic conveyer；
According to the control device for Pneumatic conveyer provided by the present invention.
In addition, present invention also offers it is a kind of including provided by the present invention for Pneumatic conveyer
The engineering machinery of control system.
Using the control method provided by the present invention for Pneumatic conveyer, equipment, system and work
Journey machinery, by the pressure value at the transfer pipeline for receiving Pneumatic conveyer；And in the pressure
In the case that value is more than or equal to maximum working pressure force value, according to the pressure value received in the unit interval
Increment and delta threshold adjusting the inlet amount of the Pneumatic conveyer, inlet amount can be made all the time
Keep greatly reducing the possibility of putty appearance in the reasonable scope, it is achieved thereby that in time,
Accurately, it is effectively prevented from Pneumatic conveyer and putty occurs.
Other features and advantages of the present invention will give specifically in subsequent specific embodiment part
It is bright.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification,
It is used to explain the present invention together with detailed description below, but does not constitute the limit to the present invention
System.In the accompanying drawings：
Fig. 1 is a kind of showing for the control system for Pneumatic conveyer of embodiment of the invention
Example structural representation；
Fig. 2 is the control device that a kind of example of embodiment of the invention is used for Pneumatic conveyer
Exemplary construction schematic diagram；
Fig. 3 is the control system that a kind of example of embodiment of the invention is used for Pneumatic conveyer
Master control flow chart；And
Fig. 4 is a kind of showing for the control method for Pneumatic conveyer of embodiment of the invention
Example flow chart.
Description of reference numerals
1 air compressor machine 2 bypasses the master air suction valve of intake valve 3
The electric butterfly valve of 4 Pressure chamber, 5 outlet valve 6
7 pressure sensors of control device 8 for being used for Pneumatic conveyer
The controller of 9 transfer pipeline, 71 receiver 72
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be understood that
It is that specific embodiment described herein is merely to illustrate and explains the present invention, is not limited to
The present invention.
Will be exemplified below the present invention thought, it is to be understood that these examples show for but not limited
Example, protection scope of the present invention not limited to this：
In order to clearly illustrate the thought of the present invention, Fig. 1 is a kind of embodiment of the invention
The control system for Pneumatic conveyer exemplary construction schematic diagram, as shown in figure 1, the system can
To include：Pressure sensor 8, for the pressure at the transfer pipeline 9 for detecting the Pneumatic conveyer
Value；And the control device 7 for Pneumatic conveyer provided by the present invention is (for the control device
Specific embodiment, will be described in greater detail below), wherein the Pneumatic conveyer can be with
Including air compressor machine 1 as shown in Figure 1, bypass intake valve 2, master air suction valve 3, Pressure chamber 4, outlet valve
5th, the executive component of electric butterfly valve 6 etc., wherein the air compressor machine 1 by transfer pipeline 9 successively with master
Intake valve 3, the air inlet of Pressure chamber 4 and outlet, outlet valve 5 connect, while the air compressor machine 1 is also
The bypass line being located with bypass intake valve 2 is connected, specifically, the bypass line and the intake valve
3rd, one section of pipeline that the air inlet and outlet of Pressure chamber 4, outlet valve 5 are located is connected in parallel, and
The bypass line is connected with transfer pipeline 9, so that conveying air or compressed air are when needed
(such as when carrying out charging and purge operation) can flow through transfer pipeline 9 to prevent from blocking up by bypass line
Material.
Fig. 2 is the control device that a kind of example of embodiment of the invention is used for Pneumatic conveyer
Exemplary construction schematic diagram, as shown in Fig. 2 the control device 7 for Pneumatic conveyer can be wrapped
Include：Receiver 71, for the pressure value P at the transfer pipeline for receiving the Pneumatic conveyer；With
And controller 72, it is connected with the receiver 71, for being more than or equal to maximum in the pressure value P
Working pressure P1In the case of, according to the increment of the pressure value received in the unit interval
(P'=Δ P/ Δ t) and delta threshold C adjusting the inlet amount of the Pneumatic conveyer, wherein described
Maximum working pressure force value P1It is (do not occur expecting the abnormal conditions such as bolt, putty in normal feeding process
When) discharge pressure maximum.Preferably, controller 72 is more than or equal to most in the pressure value P
Big working pressure P1In the case of, while feeding to the transfer pipeline of the Pneumatic conveyer
And purge operation.Preferably, controller 72 is in the pressure value P or more than or equal to maximum working pressure (MWP)
Value P1And the increment P ' of the pressure value received within the unit interval is more than or equal to the situation of delta threshold C
Under, the inlet amount of the Pneumatic conveyer is adjusted, for example reduce the charging of the Pneumatic conveyer
Amount.Preferably, controller 72 is more than safe pressure value P in the pressure value3In the case of, stop
The only operation of the Pneumatic conveyer.
Specifically, the control process using this embodiment is as follows：
(1) activation system and feed operation：Air compressor machine 1 is opened, and system produces conveying compressed air.
Master air suction valve 3 is closed, and bypass intake valve 2 is opened, and outlet valve 5 is closed, and electric butterfly valve 6 is opened and prolonged
When T0 (initial value of default) close afterwards；Pressure chamber 4 feeds, and detects transfer pipeline 9
It is whether smooth；
(2) feeding operation：When the pressure value P from pressure sensor 8 that controller 72 is received is most
Little work pressure value P2When, illustrate that transfer pipeline 9 is unimpeded, then the control of controller 72 bypass intake valve 2
Close, while master air suction valve 3, outlet valve 5 are opened, material passes through after being fluidized in Pressure chamber 4
Material valve 5, along delivery pipe 9 specified location is transported to；
(3) charging and purge operation and adjustment inlet amount：When controller 72 receive from working as pressure
The pressure value P of sensor 8 rises to (i.e. more than or equal to) maximum working pressure force value P1When, explanation
There is material bolt in transfer pipeline 9, there is the risk of plugging, and now controller 72 will control bypass intake valve 2
Open, while closing master air suction valve 3, outlet valve 5.Compressed air is entered by bypass intake valve 2
Delivery pipe 9 starts featheriness pipeline.In the process, unlike the prior art, it is provided by the present invention
Controller 72 also detect the increment P ' of the pressure value received within the unit interval and within the unit interval
The increment P ' of the pressure value for being received carries out controls in advance also greater than equal in the case of delta threshold C,
Adjust the Pneumatic conveyer by adjusting the opening time of electric butterfly valve 6 for T rather than T0
Inlet amount, so that inlet amount is remained in the reasonable scope, greatly reduces the possibility of putty appearance
Property；And when pressure sensor 8 detects that the pressure value in transfer pipeline 9 drops to minimum working pressure force value
P2When, it was demonstrated that transfer pipeline 9 is emptied, and now controller 72 secondary control will make master air suction valve 3, go out again
Material valve 5 is opened, and after of short duration time delay, closes bypass intake valve 2, and system recovers normal feed status；
Wherein, in control process (3), entering for the Pneumatic conveyer is adjusted according to below equation
Expect the opening time T of executive component (such as electric butterfly valve 6) to adjust entering for the Pneumatic conveyer
Doses：
Formula (1)
Wherein, T0 be the charging executive component the initial opening time (for known quantity, can be advance
In being stored in controller 72), P1For the maximum working pressure force value, P3It is described for safe pressure value
Safe pressure value P3More than maximum working pressure force value P1, and PcIt is corresponding to institute in the unit interval
The increment of the pressure value of reception is more than or equal to the pressure value at the moment (i.e. P' >=C) of delta threshold, Pc
Less than or equal to safe pressure value P3。
(4) stop operation：After above-mentioned purge operation and adjustment inlet amount, in detecting transfer pipeline 9
Pressure value P be still persistently increased to safe pressure value P3When, illustrate in transfer pipeline 9 occur material bolt and
Cause putty.Now, controller 72 is closed electric butterfly valve 6, master air suction valve 3, outlet valve 5 is controlled,
Bypass intake valve 2 is closed, and manual-lock air compressor machine 1, system enters stopped status, using manually to defeated
Pipeline 9 is sent to be dredged.
Using such embodiment, the controls in advance to Pneumatic conveyer can be realized, make charging
Measure and remain in the reasonable scope, greatly reduce the possibility of putty appearance, it is achieved thereby that and
Shi Di, accurately, be effectively prevented from Pneumatic conveyer and putty occur.
To further enhance the dredging of the transfer pipeline to the Pneumatic conveyer, the present invention is also provided
A kind of embodiment, in this embodiment, controller 72 is outer except being controlled operation, and also
It is configured in the pressure value P or more than or equal to maximum working pressure force value P1And within the unit interval
In the case that the increment P ' of the pressure value for being received is more than or equal to delta threshold C, to the Geldart-D particle
The further dredging of the transfer pipeline of device.
Used as a kind of embodiment, controller 72 can control the bypass executive component (example of Pneumatic conveyer
Such as bypass intake valve) higher-order of oscillation is carried out, to strengthen dredging for the transfer pipeline to the Pneumatic conveyer
It is logical.
Used as another kind of embodiment, controller 72 can control the auxiliary air compressor machine of Pneumatic conveyer (i.e.
Additional air compressor machine, not shown) work to strengthen dredging for the transfer pipeline to the Pneumatic conveyer
It is logical.
It should be appreciated that those skilled in the art can enter above-mentioned various embodiments and embodiment
Row combination configuring control system provided by the present invention, such as by the higher-order of oscillation of bypass intake valve and
Auxiliary air compressor machine is used in combination in above-mentioned control system to further enhance dredging effect.
In order to provide the appearance for further avoiding putty, embodiment of the present invention in above-mentioned control system
On the basis of, have also been proposed a kind of improved embodiment.Improvement is, in order to realize to putty
More advanced control, between above-mentioned minimum and maximum working pressure increase by one control in advance
Pressure value P11(should shift to an earlier date control pressure value P11More than minimum working pressure force value P2And less than described
Maximum working pressure force value P1), and accordingly increase control operation, further to improve the effect of Anti-blockage.
Specifically, controller 72 is further configured in the pressure value on the basis of above-mentioned embodiment
P is less than minimum working pressure force value P2In the case of, carry out the feed operation of the Pneumatic conveyer；
The pressure value P is more than or equal to minimum working pressure force value P2And less than control pressure value P in advance11
In the case of, carry out the feeding operation of the Pneumatic conveyer；And be more than in the pressure value P
Or equal to control pressure value P in advance11And less than maximum working pressure force value P1In the case of, it is right
The transfer pipeline of the Pneumatic conveyer is fed and purge operation.
It is further preferable that during feed operation is carried out, (example in the scheduled time slot that controller 72 will be received
Time as needed for scheduled time slot can be set as a charging and feeding operation, it can be according to reality
Situation is configured) maximum pressure peak value P0(maximum pressure value for receiving in the scheduled time slot)
With minimum working pressure force value P2With control pressure value P in advance11It is compared, in the maximum
Pressure peak P0More than or equal to minimum working pressure force value P2And control in advance less than or equal to described
Pressure value P11In the case of, the inlet amount of the Pneumatic conveyer is adjusted, for example increase the strength
The inlet amount of conveying device.
Wherein, it is (such as electronic according to the charging executive component of the below equation adjustment Pneumatic conveyer
Butterfly valve 6) opening time T adjusting the inlet amount of the Pneumatic conveyer：
Formula (2)
Wherein, T0 be the charging executive component the initial opening time (for known quantity, can be advance
In being stored in controller 72), P11For the control pressure value in advance, P0For the maximum pressure peak
Value.
Specifically, Fig. 3 is a kind of example of embodiment of the invention for Pneumatic conveyer
The master control flow chart of control system, as shown in figure 3, using this embodiment control process such as
Under：
Step S0, activation system and charging, air compressor machine 1 is opened, and system produces conveying compressed air,
Master air suction valve 3 is closed, and bypass intake valve 2 is opened, and outlet valve 5 is closed, and electric butterfly valve 6 is opened and prolonged
When T0 (initial value of default) close afterwards；Pressure chamber 4 feeds, and detects transfer pipeline 9
It is whether smooth；
Step S1, when the pressure value P from pressure sensor 8 that controller 72 is received is minimum work
Pressure value P2When, illustrating that transfer pipeline 9 is unimpeded, then the control of controller 72 carries out feeding operation S11,
Bypass intake valve 2 to close, while master air suction valve 3, outlet valve 5 are opened, material is in Pressure chamber 4
By outlet valve 5 after being fluidized, along delivery pipe 9 specified location is transported to；If pressure value P does not have
Have and reach minimum working pressure force value P2, wait pressure to rise to minimum working pressure force value P2；
Step S2, when what controller 72 was received rises to (i.e. from the pressure value P when pressure sensor 8
More than or equal to) shift to an earlier date control pressure value P11When, explanation system now reaches the maximum delivery of setting,
Control is carried out charging and purge operation S21 by controller 72, that is, bypass intake valve 2 open, while main
Intake valve 3, outlet valve 5 are closed, and system starts to blow material, dredges pipeline, now transfer pipeline pressure
Power can slowly decline, and illustrate that pipeline cleaning is normal；At the same time Pressure chamber 4 is opened electric butterfly valve 6 and is prolonged
When the T1=T0 times after close, complete Pressure chamber storing process；If pressure value P is not reaching to shift to an earlier date
Control pressure value P11, wait pressure to rise to control pressure value P in advance11；
Step S3, when controller 72 detects the pressure drop of pressure sensor 8 to P2, illustrate delivery pipe
Road 9 is unimpeded, then the control of controller 72 carries out feeding operation S31, that is, bypass intake valve 2 and close, together
When master air suction valve 3, outlet valve 5 open, system starts for the storage material in Pressure chamber to be transported to conveying
In pipeline 9；
Step S32, during above-mentioned conventional operating mode (such as charging and purge operation, feeding operation) or
After expecting that bolt situation is eliminated, the maximum pressure peak value P in scheduled time slot that controller 72 will be received0With institute
State minimum working pressure force value P2With control pressure value P in advance11It is compared, if the P0In P2
With P11Interval, then controller 72 can be determined that it is too small for system feeding volume, need to increase Pressure chamber charging
Time, then butterfly valve open time delay time T in the adjustment control system of controller 72, the T values are as mentioned above
Calculated according to formula (2), while perform bypass intake valve 2 open, while master air suction valve 3, outlet valve
5 close, and charging and the purge operation S33 of electric butterfly valve 6 are opened, until completing Pressure chamber fill process.
Also, as described herein, step S3 can be returned to after step S41, S51, S6 are performed
Circulation performs above-mentioned steps；
Step S4, when what controller 72 was received controls from the pressure value P when pressure sensor 8 in advance
Pressing pressure value P11With maximum working pressure force value P1Between when, control is fed and is dredged by controller 72
Logical operation S41, that is, bypass intake valve 2 open, while master air suction valve 3, outlet valve 5 are closed, system
Start to blow material, dredge pipeline；At the same time Pressure chamber 4 opens electric butterfly valve 6 and time delay T1=T0
Close after time, complete Pressure chamber storing process；
Step S5, when what controller 72 was received rises to (i.e. from the pressure value P when pressure sensor 8
More than or equal to) maximum working pressure force value P1When, illustrate that material bolt occurs in transfer pipeline 9, there is plugging
Risk, now controller 72 by control bypass intake valve 2 open, while making master air suction valve 3, outlet valve
5 close.Compressed air enters delivery pipe 9 and starts featheriness pipeline by bypass intake valve 2.In this process
In, controller 72 also detects the increment P ' of the pressure value received within the unit interval and in the unit interval
The increment P ' of interior received pressure value is controlled in advance also greater than equal in the case of delta threshold C
System (step S51), that is, judge that now inlet amount is excessive, it is desirable to reduce the feed time of Pressure chamber 4,
The Pneumatic conveyer is adjusted from there through the opening time of adjustment electric butterfly valve 6 for T rather than T0
Inlet amount so that inlet amount is remained in the reasonable scope, greatly reduce putty appearance can
Energy property, wherein it is possible to adjust the charging executive component (example of the Pneumatic conveyer according to below equation
Such as electric butterfly valve 6) opening time T adjusting the inlet amount of the Pneumatic conveyer：
Formula (1)
Wherein, T0 be the charging executive component the initial opening time (for known quantity, can be advance
In being stored in controller 72), P1For the maximum working pressure force value, P3It is described for safe pressure value
Safe pressure value P3More than maximum working pressure force value P1, and PcIt is corresponding to institute in the unit interval
The increment of the pressure value of reception is more than or equal to the pressure value at the moment (i.e. P' >=C) of delta threshold, Pc
Less than or equal to safe pressure value P3.Because formula (1) is decreasing function, therefore can be gradually
Shorten the feed time of Pressure chamber 4, reduce the volume that material is conveyed per batch, so as to avoid plugging from sending out
It is raw.
Additionally, can also preferably be strengthened the operation of the dredging to transfer pipeline in step S51,
Such as controller 72 increases the control bypass higher-order of oscillation of intake valve 2, even if the valve element of bypass intake valve 2
High dither, so as to produce oscillatory surge air-flow in pipeline, strengthens the air pulse to transfer pipeline 9
And pipeline vibration, improve the dredging ability of pipeline.Or, controller 72 can also be controlled as described above
Auxiliary air compressor machine works to reach similar effect.
Step S6, after above-mentioned purge operation and adjustment inlet amount, detects the pressure in transfer pipeline 9
Force value P is still persistently increased to safe pressure value P3When, illustrate occur material bolt in transfer pipeline 9, cause
Putty.Now, controller 72 is closed electric butterfly valve 6, master air suction valve 3, outlet valve 5 is controlled, other
Logical intake valve 2 is closed, manual-lock air compressor machine 1, and system enters stopped status, using manually to conveying
Pipeline 9 is dredged (step S61).
Using such embodiment, it is not only able to make inlet amount remain in the reasonable scope, greatly
The possibility of putty appearance is reduced greatly, but also can strengthen the dredging ability of pipeline, so as to realize
In time, accurately, being effectively prevented from Pneumatic conveyer there is putty.
It should be appreciated that above-mentioned minimum working pressure force value, most can be previously stored with controller 72
Big working pressure, in advance safe pressure value, the data such as control pressure value, delta threshold, scheduled time slot,
Or these data can also manually be arranged by input equipment in activation system.Also, ability
Field technique personnel can select any one of above-mentioned various embodiments with disclosure of the invention, or
Select the combination of above-mentioned various embodiments to be configured to the control device and system of Pneumatic conveyer,
And others are replaced embodiment and also fall into protection scope of the present invention.
Fig. 4 is a kind of showing for the control method for Pneumatic conveyer of embodiment of the invention
Example flow chart, as shown in figure 4, the method may comprise steps of：
Step 1001, receives the pressure value at the transfer pipeline of the Pneumatic conveyer；And
Step 1002, in the case where the pressure value is more than or equal to maximum working pressure force value, according to
The increment and delta threshold of the pressure value received in the unit interval is adjusting the Pneumatic conveyer
Inlet amount.
Preferably, the method can also include：It is more than or equal to maximum working pressure (MWP) in the pressure value
In the case of value, the transfer pipeline of the Pneumatic conveyer is fed and purge operation.
Preferably, the method can also include：In the pressure value or more than or equal to maximum working pressure (MWP)
The increment of value and the pressure value received within the unit interval subtracts more than or equal in the case of delta threshold
The inlet amount of the little Pneumatic conveyer.
Preferably, the method can also include：The Pneumatic conveyer is adjusted according to below equation
The opening time T of charging executive component is adjusting the inlet amount of the Pneumatic conveyer：
Wherein, T0 be it is described charging executive component the initial opening time, P1For the maximum working pressure
Force value, P3For safe pressure value, the safe pressure value is more than the maximum working pressure force value, and
PcBe corresponding to the pressure value received in the unit interval increment more than or equal to delta threshold moment
Pressure value, PcLess than or equal to the safe pressure value.
Preferably, the method can also include：It is more than the feelings of the safe pressure value in the pressure value
Under condition, stop the operation of the Pneumatic conveyer.
Preferably, the method can also include that the bypass executive component of control Pneumatic conveyer carries out height
Frequency vibration swings to strengthen the dredging of the transfer pipeline to the Pneumatic conveyer.
Preferably, the method can also include the auxiliary air compressor machine work of control Pneumatic conveyer to increase
The dredging of the strong transfer pipeline to the Pneumatic conveyer.
Preferably, the method can also include：The feelings of minimum working pressure force value are less than in the pressure value
Under condition, the feed operation of the Pneumatic conveyer is carried out；In the pressure value more than or equal to described
Minimum working pressure force value and less than control pressure value in advance in the case of, carry out the Pneumatic conveyer
Feeding operation；And in the pressure value more than or equal to the control pressure value in advance and less than institute
In the case of stating maximum working pressure force value, the transfer pipeline of the Pneumatic conveyer is carried out charging and
Purge operation, wherein the control pressure value in advance is more than the minimum working pressure force value and less than described
Maximum working pressure force value.
Preferably, the method can also include will receive scheduled time slot in maximum pressure peak value and institute
State minimum working pressure force value and the control pressure value in advance is compared, in the maximum pressure peak value
More than or equal to the minimum working pressure force value and less than or equal to the situation of the control pressure value in advance
Under, increase the inlet amount of the Pneumatic conveyer.
Preferably, the method can also include：The Pneumatic conveyer is adjusted according to below equation
The opening time T of charging executive component is adjusting the inlet amount of the Pneumatic conveyer：
Wherein, T0 be it is described charging executive component the initial opening time, P11For the control pressure in advance
Force value, P0For the maximum pressure peak value.
It should be appreciated that each specific embodiment party of the above-mentioned control method for Pneumatic conveyer
Formula, for Pneumatic conveyer control device, the embodiment of system in done in detail
Bright (as described above), will not be described here.Also, those skilled in the art can be with of the invention
It is open to select any one of above-mentioned various embodiments, or the combination for selecting above-mentioned various embodiments
To be configured to control device, the system of Pneumatic conveyer, and other embodiments of replacing also fall
Enter protection scope of the present invention.
In addition, present invention also offers including according to provided by the present invention for Pneumatic conveyer
The engineering machinery (not shown) of control system, the engineering machinery not only can be with included as described above according to this
The control system for Pneumatic conveyer of invention embodiment, and the engineering machinery can also adopt
Carried out with any one of above-mentioned control method and equipment for Pneumatic conveyer and combinations thereof above-mentioned
Control process.It should be appreciated that the engineering machinery can any need to enter Pneumatic conveyer
The engineering machinery of row control.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not
The detail being limited in above-mentioned embodiment, in the range of the technology design of the present invention, can be to this
The technical scheme of invention carries out various simple variants, and these simple variants belong to the protection model of the present invention
Enclose.
It is further to note that each particular technique described in above-mentioned specific embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid not
Necessary repetition, the present invention is no longer separately illustrated to various possible combinations.
Additionally, can also be combined between a variety of embodiments of the present invention, as long as
, without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention for it.
Claims (22)
1. a kind of control method for Pneumatic conveyer, it is characterised in that the method includes：
Receive the pressure value at the transfer pipeline of the Pneumatic conveyer；And
In the case where the pressure value is more than or equal to maximum working pressure force value, the inlet amount of the Pneumatic conveyer is adjusted according to the increment and delta threshold of the pressure value received in the unit interval.
2. method according to claim 1, it is characterised in that the method also includes：
In the case where the pressure value is more than or equal to maximum working pressure force value, the transfer pipeline of the Pneumatic conveyer is fed and purge operation.
3. method according to claim 1, it is characterised in that the method also includes：
The increment of the pressure value received in the pressure value or more than or equal to maximum working pressure force value and within the unit interval reduces the inlet amount of the Pneumatic conveyer more than or equal in the case of delta threshold.
4. method according to claim 3, it is characterised in that the method also includes：The opening time T of charging executive component of the Pneumatic conveyer is adjusted according to below equation to adjust the inlet amount of the Pneumatic conveyer：
Wherein, T0 be it is described charging executive component the initial opening time, P1For the maximum working pressure force value, P3For safe pressure value, the safe pressure value is more than the maximum working pressure force value, and PcBe corresponding to the pressure value received in the unit interval increment more than or equal to delta threshold moment pressure value, PcLess than or equal to the safe pressure value.
5. method according to claim 1, it is characterised in that the method also includes：In the case where the pressure value is more than safe pressure value, stop the operation of the Pneumatic conveyer.
6. method according to claim 2, it is characterised in that the method also includes：The bypass executive component of control Pneumatic conveyer carries out the higher-order of oscillation to strengthen the dredging of the transfer pipeline to the Pneumatic conveyer.
7. method according to claim 2, it is characterised in that the method also includes that the auxiliary air compressor machine of control Pneumatic conveyer works to strengthen the dredging of the transfer pipeline to the Pneumatic conveyer.
8. the method according to any one of claim 1-7 claim, it is characterised in that the method also includes：
In the case where the pressure value is less than minimum working pressure force value, the feed operation of the Pneumatic conveyer is carried out；
The pressure value more than or equal to the minimum working pressure force value and less than control pressure value in advance in the case of, carry out the feeding operation of the Pneumatic conveyer；And
In the case where the pressure value is more than or equal to the control pressure value in advance and less than the maximum working pressure force value, the transfer pipeline of the Pneumatic conveyer is fed and purge operation, wherein the control pressure value in advance is more than the minimum working pressure force value and less than the maximum working pressure force value.
9. method according to claim 8, it is characterised in that the method also includes：Maximum pressure peak value in the scheduled time slot of reception is compared with the minimum working pressure force value and the control pressure value in advance, in the case where the maximum pressure peak value is more than or equal to the minimum working pressure force value and less than or equal to the in advance control pressure value, increase the inlet amount of the Pneumatic conveyer.
10. method according to claim 9, it is characterised in that the method also includes：The opening time T of charging executive component of the Pneumatic conveyer is adjusted according to below equation to adjust the inlet amount of the Pneumatic conveyer：
Wherein, T0 be it is described charging executive component the initial opening time, P11For the control pressure value in advance, P0For the maximum pressure peak value.
11. a kind of control devices for Pneumatic conveyer, it is characterised in that the equipment includes：
Receiver, for the pressure value at the transfer pipeline for receiving the Pneumatic conveyer；And
Controller, for being more than or equal to maximum working pressure force value in the pressure value in the case of according to the increment and delta threshold of the pressure value received in the unit interval adjusting the inlet amount of the Pneumatic conveyer.
12. equipment according to claim 11, it is characterised in that the controller is additionally operable to：
In the case where the pressure value is more than or equal to maximum working pressure force value, the transfer pipeline of the Pneumatic conveyer is fed and purge operation.
13. equipment according to claim 11, it is characterised in that the controller is additionally operable to：
The increment of the pressure value received in the pressure value or more than or equal to maximum working pressure force value and within the unit interval reduces the inlet amount of the Pneumatic conveyer more than or equal in the case of delta threshold.
14. equipment according to claim 13, it is characterised in that the controller is additionally operable to：
The opening time T of charging executive component of the Pneumatic conveyer is adjusted according to below equation to adjust the inlet amount of the Pneumatic conveyer：
Wherein, T0 be it is described charging executive component the initial opening time, P1For the maximum working pressure force value, P3For safe pressure value, the safe pressure value is more than the maximum working pressure force value, and PcBe corresponding to the pressure value received in the unit interval increment more than or equal to delta threshold moment pressure value, PcLess than or equal to the safe pressure value.
15. equipment according to claim 11, it is characterised in that the controller is additionally operable to：
In the case where the pressure value is more than safe pressure value, stop the operation of the Pneumatic conveyer.
16. equipment according to claim 12, it is characterised in that the controller is additionally operable to：
The bypass executive component of control Pneumatic conveyer carries out the higher-order of oscillation to strengthen the dredging of the transfer pipeline to the Pneumatic conveyer.
17. equipment according to claim 12, it is characterised in that the controller is additionally operable to：
The auxiliary air compressor machine of control Pneumatic conveyer works to strengthen the dredging of the transfer pipeline to the Pneumatic conveyer.
18. equipment according to any one of claim 11-17 claim, it is characterised in that the controller is additionally operable to：
In the case where the pressure value is less than minimum working pressure force value, the feed operation of the Pneumatic conveyer is carried out；
The pressure value more than or equal to the minimum working pressure force value and less than control pressure value in advance in the case of, carry out the feeding operation of the Pneumatic conveyer；And
In the case where the pressure value is more than or equal to the control pressure value in advance and less than the maximum working pressure force value, the transfer pipeline of the Pneumatic conveyer is fed and purge operation, wherein the control pressure value in advance is more than the minimum working pressure force value and less than the maximum working pressure force value.
19. equipment according to claim 18, it is characterised in that the controller is additionally operable to：
Maximum pressure peak value in the scheduled time slot of reception is compared with the minimum working pressure force value and the control pressure value in advance, in the case where the maximum pressure peak value is more than or equal to the minimum working pressure force value and less than or equal to the in advance control pressure value, increase the inlet amount of the Pneumatic conveyer.
20. equipment according to claim 19, it is characterised in that the controller is additionally operable to：The opening time T of charging executive component of the Pneumatic conveyer is adjusted according to below equation to adjust the inlet amount of the Pneumatic conveyer：
Wherein, T0 be it is described charging executive component the initial opening time, P11For the control pressure value in advance, P0For the maximum pressure peak value.
21. a kind of control systems for Pneumatic conveyer, it is characterised in that the system includes：
Pressure sensor, for the pressure value at the transfer pipeline for detecting the Pneumatic conveyer；And
The control device for Pneumatic conveyer according to any one of claim 11-20 claim.
A kind of 22. engineering machinery of the control system for Pneumatic conveyer including described in claim 21.
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| CN111377243A (en) * | 2020-06-01 | 2020-07-07 | 山东天瑞重工有限公司 | Pneumatic conveying system and control method thereof |
| CN111735316A (en) * | 2020-06-19 | 2020-10-02 | 亿利洁能股份有限公司达拉特分公司 | Calcium carbide furnace purification ash conveying, burning and negative pressure slag suction system |
| CN113888835A (en) * | 2021-10-20 | 2022-01-04 | 苏州大学 | Material conveying monitoring and early warning system and method for powder pneumatic conveying device |
| CN114194835A (en) * | 2021-12-31 | 2022-03-18 | 浙江汉信科技有限公司 | Control method of powder conveying system |
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|---|---|
| CN106672632B (en) | 2019-03-15 |
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