CN106672632B - For the control method of Pneumatic conveyer, equipment, system and engineering machinery - Google Patents
For the control method of Pneumatic conveyer, equipment, system and engineering machinery Download PDFInfo
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- CN106672632B CN106672632B CN201510755792.8A CN201510755792A CN106672632B CN 106672632 B CN106672632 B CN 106672632B CN 201510755792 A CN201510755792 A CN 201510755792A CN 106672632 B CN106672632 B CN 106672632B
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000010926 purge Methods 0.000 claims description 16
- 238000012840 feeding operation Methods 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 13
- 230000003111 delayed effect Effects 0.000 description 4
- 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
- 230000005611 electricity Effects 0.000 description 2
- 230000002159 abnormal effect 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
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004634 feeding behavior Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
Abstract
The present invention provides a kind of for the control method of Pneumatic conveyer, equipment, system and engineering machinery, this method comprises: receiving the pressure value at the transfer pipeline of the Pneumatic conveyer；And in the case where the pressure value is greater than or equal to maximum working pressure force value, according in the unit time received pressure value increment and delta threshold adjust the inlet amount of the Pneumatic conveyer.The present invention can be such that inlet amount remains in the reasonable scope, greatly reduce a possibility that putty occurs, thus realize in time, accurately, be effectively prevented from Pneumatic conveyer and putty occur.
Description
Technical field
The present invention relates to engineering machinery fields, and in particular, to a kind of control method for Pneumatic conveyer, one kind
Control equipment, a kind of control system and a kind of engineering machinery for Pneumatic conveyer for Pneumatic conveyer.
Background technique
Pneumatic conveyer needs to dredge transfer pipeline in the process of conveying materials, to avoid putty.And show
Some control methods mostly use the variation of the pressure value at according to transfer pipeline to control the movement of bypass executive component to defeated
Send pipeline dredged (such as according to the pressure value and preset minimum operating pressures that, maximum working pressure (MWP), safe pressure it is big
Small relationship).But this method in the prior art still can expect when the pressure at transfer pipeline reaches safe pressure
Bolt results in putty, can not effectively be dredged before forming plugging.
Lack in the prior art can in time, accurately, be effectively prevented from Pneumatic conveyer and the control of putty occur
Method, equipment and system processed.
Summary of the invention
It can in time, accurately, effectively there is the control of putty in Pneumatic conveyer for lacking in the prior art
The technical issues of method, equipment and system, the present invention provides a kind of control method for Pneumatic conveyer, the party
Method includes: the pressure value received at the transfer pipeline of the Pneumatic conveyer；And it is greater than or equal to most in the pressure value
In the case where big working pressure, according in the unit time received pressure value increment and delta threshold adjust the gas
The inlet amount of power conveying device.
Correspondingly, the present invention also provides a kind of control equipment for Pneumatic conveyer, which includes: to receive
Device, the pressure value at transfer pipeline for receiving the Pneumatic conveyer；And controller, for big in the pressure value
In or equal in the case where maximum working pressure force value according in the unit time received pressure value increment and delta threshold come
Adjust the inlet amount of the Pneumatic conveyer.
Correspondingly, the present invention also provides a kind of control system for Pneumatic conveyer, which includes: that pressure passes
Sensor, the pressure value at transfer pipeline for detecting the Pneumatic conveyer；Strength is used for provided by according to the present invention
The control equipment of conveying device.
In addition, the present invention also provides a kind of including the control system provided by the present invention for Pneumatic conveyer
Engineering machinery.
Using control method, the equipment, systems and construction machinery provided by the present invention for Pneumatic conveyer, pass through
Receive the pressure value at the transfer pipeline of Pneumatic conveyer；And it is greater than or equal to maximum working pressure force value in the pressure value
In the case where, according in the unit time received pressure value increment and delta threshold adjust the Pneumatic conveyer
Inlet amount can be such that inlet amount remains in the reasonable scope, greatly reduce a possibility that putty occurs, to realize
In time, accurately, be effectively prevented from Pneumatic conveyer and putty occur.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is that a kind of exemplary construction of the control system for Pneumatic conveyer of embodiment according to the present invention is shown
It is intended to；
Fig. 2 is the example knot that a kind of example of embodiment according to the present invention is used for the control equipment of Pneumatic conveyer
Structure schematic diagram；
Fig. 3 is the master control that a kind of example of embodiment according to the present invention is used for the control system of Pneumatic conveyer
Flow chart；And
Fig. 4 is a kind of example flow of the control method for Pneumatic conveyer of embodiment according to the present invention
Figure.
Description of symbols
1 air compressor machine 2 bypasses 3 master air suction valve of intake valve
4 Pressure chamber, 5 outlet valve, 6 electric butterfly valve
7 are used for 8 pressure sensor of control equipment of Pneumatic conveyer
9 transfer pipeline, 71 receiver, 72 controller
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Will be exemplified below thought of the invention, it is to be understood that these examples be non-limiting example, the present invention
Protection scope it is without being limited thereto:
In order to clearly illustrate thought of the invention, Fig. 1 is a kind of embodiment according to the present invention for gas
The exemplary construction schematic diagram of the control system of power conveying device is used as shown in Figure 1, the system may include: pressure sensor 8
Pressure value at the transfer pipeline 9 for detecting the Pneumatic conveyer；And it is provided by the present invention for pneumatic conveying dress
The control equipment 7 (for the specific embodiment of the control equipment, will be described in greater detail below) set, wherein the gas
Power conveying device may include air compressor machine 1 as shown in Figure 1, bypass intake valve 2, master air suction valve 3, Pressure chamber 4, outlet valve 5, electricity
The executive component of dynamic butterfly valve 6 etc., wherein the air compressor machine 1 passes through the successively air inlet with master air suction valve 3, Pressure chamber 4 of transfer pipeline 9
Mouth and outlet, outlet valve 5 connect, while the air compressor machine 1 is also connect with the bypass line where bypass intake valve 2, specifically,
The bypass line is in parallel with one section of pipeline where the intake valve 3, the air inlet of Pressure chamber 4 and outlet, outlet valve 5 to be connected
Connect, and the bypass line is connected with transfer pipeline 9 so that conveying with air or compressed air when needed (such as
When carrying out charging and purge operation) transfer pipeline 9 can be flowed through by bypass line to prevent putty.
Fig. 2 is the example knot that a kind of example of embodiment according to the present invention is used for the control equipment of Pneumatic conveyer
Structure schematic diagram, as shown in Fig. 2, the control equipment 7 for Pneumatic conveyer may include: receiver 71, it is described for receiving
Pressure value P at the transfer pipeline of Pneumatic conveyer；And controller 72, it is connect with the receiver 71, for described
Pressure value P is greater than or equal to maximum working pressure force value P1In the case where, according in the unit time received pressure value increment
(P'=Δ P/ Δ t) and delta threshold C adjust the inlet amount of the Pneumatic conveyer, wherein the maximum working pressure (MWP) value
P1It is the maximum value of discharge pressure (when i.e. without there are the abnormal conditions such as material bolt, putty) in normal feeding process.Preferably,
Controller 72 is greater than or equal to maximum working pressure force value P in the pressure value P1In the case where, while the pneumatic conveying is filled
The transfer pipeline set carries out charging and purge operation.Preferably, controller 72 in the pressure value P or is more than or equal to maximum functional
Pressure value P1And within the unit time received pressure value increment P ' be more than or equal to delta threshold C in the case where, adjust institute
The inlet amount of Pneumatic conveyer is stated, such as reduces the inlet amount of the Pneumatic conveyer.Preferably, controller 72 is described
Pressure value is greater than the safe pressure value P3In the case where, stop the 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 generates conveying compressed air.Master air suction valve 3 closes
It closes, bypass intake valve 2 is opened, and outlet valve 5 is closed, and electric butterfly valve 6 is opened and the T0 that is delayed (initial value of default) is closed afterwards；
Pressure chamber 4 is fed, and whether detect transfer pipeline 9 smooth；
(2) feeding operation: when the received pressure value P from pressure sensor 8 of controller 72 is minimum working pressure force value
P2When, illustrate that transfer pipeline 9 is unimpeded, then the control of controller 72 bypass intake valve 2 is closed, while master air suction valve 3, outlet valve 5 are beaten
It opens, material passes through outlet valve 5 after being fluidized in Pressure chamber 4, is transported to designated position along delivery pipe 9；
(3) it feeds and purge operation and adjustment inlet amount: when controller 72 is received from the pressure for working as pressure sensor 8
Force value P rises to and (is greater than or equal to) maximum working pressure force value P1When, illustrate that material bolt occurs in transfer pipeline 9, there are pluggings
Risk, controller 72 opens control bypass intake valve 2 at this time, while closes master air suction valve 3, outlet valve 5.Compressed air is logical
It crosses bypass intake valve 2 and enters the beginning featheriness pipeline of delivery pipe 9.In the process, unlike the prior art, the present invention is mentioned
The controller 72 of confession also detect within the unit time the increment P ' of received pressure value and the received pressure of institute within the unit time
In the case that the increment P ' of force value is also greater than delta threshold C is equal to, controls in advance, i.e. opening by adjusting electric butterfly valve 6 are carried out
The inlet amount that the time is T rather than T0 to adjust the Pneumatic conveyer is opened, so that inlet amount remains at zone of reasonableness
It is interior, greatly reduce a possibility that putty occurs；And it is dropped to when pressure sensor 8 detects the pressure value in transfer pipeline 9
Minimum working pressure force value P2When, it was demonstrated that transfer pipeline 9 has emptied, and controller 72 will make master air suction valve 3, discharging by secondary control again at this time
Valve 5 is opened, and after of short duration delay, makes to bypass the closing of intake valve 2, system restores normal transport status；
Wherein, in control process (3), the charging executive component of the Pneumatic conveyer is adjusted according to the following formula
The opening time T of (such as electric butterfly valve 6) is to adjust the inlet amount of the Pneumatic conveyer:
Formula (1)
Wherein, T0 is that the initial opening time of the charging executive component (for known quantity, can be stored in advance in controller
In 72), P1For the maximum working pressure force value, P3For safe pressure value, the safe pressure value P3Greater than the maximum working pressure
Force value P1And PcAt the time of for the increment corresponding to pressure value received in the unit time more than or equal to delta threshold (i.e.
P' >=C) pressure value, PcLess than or equal to the safe pressure value P3。
(4) it stops operation: after above-mentioned purge operation and adjustment inlet amount, detecting pressure value P in transfer pipeline 9 still
Persistently it is increased to safe pressure value P3When, illustrate to occur material bolt in transfer pipeline 9 and causes putty.At this point, controller 72 will be controlled
Electric butterfly valve 6 processed, master air suction valve 3, outlet valve 5 are closed, and bypass intake valve 2 is closed, and air compressor machine 1 is turned off manually, and system, which enters, stops
Machine state, using manually being dredged to transfer pipeline 9.
Using such embodiment, it can be realized the controls in advance to Pneumatic conveyer, remain inlet amount
In the reasonable scope, greatly reduce a possibility that putty occurs, thus realize in time, accurately, be effectively prevented from gas
There is putty in power conveying device.
For the dredging for further enhancing the transfer pipeline to the Pneumatic conveyer, the present invention also provides a kind of implementations
Mode, in this embodiment, controller 72 other than carrying out control operation, be further configured in the pressure value P or
More than or equal to maximum working pressure force value P1And within the unit time received pressure value increment P ' be more than or equal to delta threshold C
In the case where, the further dredging to the transfer pipeline of the Pneumatic conveyer.
As one embodiment, controller 72 can control Pneumatic conveyer bypass executive component (such as bypass into
Air valve) higher-order of oscillation is carried out, to enhance the dredging to the transfer pipeline of the Pneumatic conveyer.
As another embodiment, controller 72 can control auxiliary air compressor (the i.e. additional sky of Pneumatic conveyer
Press is not shown) it works to enhance the dredging of the transfer pipeline to the Pneumatic conveyer.
It should be understood that above-mentioned various embodiments and embodiment can be combined to match by those skilled in the art
Control system provided by the present invention is set, such as the higher-order of oscillation for bypassing intake valve and auxiliary air compressor are used in combination in above-mentioned
Control system further enhances dredging effect.
In order to provide the appearance for further avoiding putty, the present invention on the basis of embodiment of above-mentioned control system,
Have also been proposed a kind of improved embodiment.Improvement is, in order to realize the more advanced control to putty, it is above-mentioned most
The small increase by one between maximum working pressure force value controls pressure value P in advance11(i.e. this controls pressure value P in advance11Greater than described
Minimum working pressure force value P2And it is less than the maximum working pressure force value P1), and it is increase accordingly control operation, it is anti-to further increase
The effect of putty.
Specifically, controller 72 is further configured to be less than minimum in the pressure value P on the basis of the above embodiment
Working pressure P2In the case where, carry out the feed operation of the Pneumatic conveyer；It is greater than or equal to institute in the pressure value P
State minimum working pressure force value P2And it is less than and controls pressure value P in advance11In the case where, carry out the feeding behaviour of the Pneumatic conveyer
Make；And pressure value P is controlled in advance described in being greater than or equal in the pressure value P11And it is less than the maximum working pressure force value P1
In the case where, charging and purge operation are carried out to the transfer pipeline of the Pneumatic conveyer.
It is further preferable that during carrying out feed operation, controller 72 is by (such as predetermined period in received predetermined period
Can be set as one charging and feeding operation needed for the time, can be configured according to the actual situation) maximum pressure
Peak value P0(maximum pressure value received in the predetermined period) and the minimum working pressure force value P2With the control pressure in advance
Force value P11It is compared, in the maximum pressure peak value P0More than or equal to the minimum working pressure force value P2And it is less than or equal to
It is described to control pressure value P in advance11In the case where, the inlet amount of the Pneumatic conveyer is adjusted, such as increase the pneumatic transporting
Send the inlet amount of device.
Wherein, the charging executive component (such as electric butterfly valve 6) of the Pneumatic conveyer is adjusted according to the following formula
Opening time T is to adjust the inlet amount of the Pneumatic conveyer:
Formula (2)
Wherein, T0 is that the initial opening time of the charging executive component (for known quantity, can be stored in advance in controller
In 72), P11Pressure value, P are controlled in advance to be described0For the maximum pressure peak value.
Specifically, Fig. 3 is that a kind of example of embodiment according to the present invention is used for the control system of Pneumatic conveyer
Master control flow chart, as shown in figure 3, as follows using the control process of this embodiment:
Step S0, activation system and charging, air compressor machine 1 are opened, and system generates conveying compressed air, and master air suction valve 3 closes
It closes, bypass intake valve 2 is opened, and outlet valve 5 is closed, and electric butterfly valve 6 is opened and the T0 that is delayed (initial value of default) is closed afterwards；
Pressure chamber 4 is fed, and whether detect transfer pipeline 9 smooth；
Step S1, when the received pressure value P from pressure sensor 8 of controller 72 is minimum working pressure force value P2When,
Illustrate that transfer pipeline 9 is unimpeded, then the control of controller 72 carries out feeding operation S11, i.e. bypass intake valve 2 is closed, while main air inlet
Valve 3, outlet valve 5 are opened, and material passes through outlet valve 5 after being fluidized in Pressure chamber 4, are transported to specific bit along delivery pipe 9
It sets；If pressure value P does not reach minimum working pressure force value P2, pressure is waited to rise to minimum working pressure force value P2；
Step S2, when the received pressure value P from when pressure sensor 8 of controller 72 rises to and (is greater than or equal to)
Pressure value P is controlled in advance11When, illustrate that system reaches the maximum delivery of setting at this time, controller 72 by control carry out charging and
Purge operation S21, i.e. bypass intake valve 2 are opened, master air suction valve 3, outlet valve 5 are closed simultaneously, and system starts to blow material, dredges
Pipeline, transfer pipeline pressure can slowly decline at this time, illustrate that pipeline cleaning is normal；Pressure chamber 4 opens electric butterfly valve 6 at the same time
And closed after the T1=T0 time that is delayed, complete Pressure chamber storing process；If pressure value P does not reach controls pressure value in advance
P11, wait pressure to rise to and control pressure value P in advance11；
Step S3, when the pressure that controller 72 detects pressure sensor 8 drops to P2, illustrate that transfer pipeline 9 is unimpeded, then control
The control of device 72 processed carries out feeding operation S31, i.e. bypass intake valve 2 is closed, while master air suction valve 3, outlet valve 5 are opened, and system is opened
Storage material in Pressure chamber is transported in transfer pipeline 9 by the beginning；
Step S32, during above-mentioned conventional operating condition (such as charging and purge operation, feeding operation) or when material bolt situation disappears
After removing, controller 72 is by the maximum pressure peak value P in received predetermined period0With the minimum working pressure force value P2It is mentioned with described
Preceding control pressure value P11It is compared, if the P0In P2With P11Section, then controller 72 can be determined that as system feeding volume
It is too small, Pressure chamber feed time need to be increased, then butterfly valve open time delay time T, the T value are as above in 72 adjustment control system of controller
It is described to be calculated according to formula (2), it is performed simultaneously bypass intake valve 2 and opens, while master air suction valve 3, outlet valve 5 are closed, and electricity is opened
The charging of dynamic butterfly valve 6 and purge operation S33, until completing Pressure chamber fill process.Also, it as described herein, can be in step
Rapid S41, S51, S6 are recycled back to step S3 after executing and are executed above-mentioned steps；
Step S4, when the received pressure value P from when pressure sensor 8 of controller 72 is controlling pressure value P in advance11With
Maximum working pressure force value P1Between when, controller 72 by control carry out charging and purge operation S41, i.e., bypass intake valve 2 open,
Master air suction valve 3, outlet valve 5 are closed simultaneously, and system starts to blow material, dredge pipeline；Pressure chamber 4 opens electronic butterfly at the same time
Valve 6 is simultaneously closed after the T1=T0 time that is delayed, and Pressure chamber storing process is completed；
Step S5, when the received pressure value P from when pressure sensor 8 of controller 72 rises to and (is greater than or equal to)
Maximum working pressure force value P1When, illustrate that material bolt occurs in transfer pipeline 9, there are the risks of plugging, and controller 72 will control other at this time
Logical intake valve 2 is opened, while closes master air suction valve 3, outlet valve 5.Compressed air enters delivery pipe 9 by bypass intake valve 2
Start featheriness pipeline.In the process, controller 72 also detect within the unit time the increment P ' of received pressure value and
In the case that the increment P ' of the received pressure value of institute is also greater than delta threshold C is equal in unit time, progress controls in advance (step
S51), that is, determine that inlet amount is excessive at this time, it is desirable to reduce the feed time of Pressure chamber 4, from there through opening for adjustment electric butterfly valve 6
The inlet amount that the time is T rather than T0 to adjust the Pneumatic conveyer is opened, so that inlet amount remains at zone of reasonableness
It is interior, greatly reduce a possibility that putty occurs, wherein the charging of the Pneumatic conveyer can be adjusted according to the following formula
The opening time T of executive component (such as electric butterfly valve 6) is to adjust the inlet amount of the Pneumatic conveyer:
Formula (1)
Wherein, T0 is that the initial opening time of the charging executive component (for known quantity, can be stored in advance in controller
In 72), P1For the maximum working pressure force value, P3For safe pressure value, the safe pressure value P3Greater than the maximum working pressure
Force value P1And PcAt the time of for the increment corresponding to pressure value received in the unit time more than or equal to delta threshold (i.e.
P' >=C) pressure value, PcLess than or equal to the safe pressure value P3.It, can be gradually since formula (1) is decreasing function
Shorten the feed time of Pressure chamber 4, the volume of every batch of conveying material is reduced, to avoid plugging.
In addition, can also preferably be enhanced the operation of the dredging to transfer pipeline, such as controller 72 in step S51
Increase control bypass 2 higher-order of oscillation of intake valve, even if the spool high dither of bypass intake valve 2, to generate vibration in pipeline
Impact air-flow is swung, enhances air pulse and pipeline vibration to transfer pipeline 9, improves the dredging ability of pipeline.Alternatively, controller
72 can also control auxiliary air compressor work as described above to reach similar effect.
Step S6 detects that the pressure value P in transfer pipeline 9 is still lasting after above-mentioned purge operation and adjustment inlet amount
It is increased to safe pressure value P3When, illustrate occur material bolt in transfer pipeline 9, causes putty.At this point, controller 72 will control it is electronic
Butterfly valve 6, master air suction valve 3, outlet valve 5 are closed, and bypass intake valve 2 is closed, and air compressor machine 1 is turned off manually, and system enters shutdown status,
Using manually being dredged (step S61) to transfer pipeline 9.
Using such embodiment, it is not only able to remain inlet amount in the reasonable scope, greatly reduces stifled
A possibility that material occurs, but also the dredging ability of pipeline can be enhanced, it in time, accurately, is effectively kept away to realize
Exempt from Pneumatic conveyer and putty occurs.
It should be understood that above-mentioned minimum working pressure force value, maximum working pressure (MWP) can be previously stored in controller 72
Value, safe pressure value, the data such as control pressure value, delta threshold, predetermined period or these data can also be by defeated in advance
Enter equipment to be manually arranged in activation system.Also, those skilled in the art can be in open selection according to the present invention
Any one of various embodiments, or the combination of the above-mentioned various embodiments of selection are stated to be configured to Pneumatic conveyer
Control equipment and system, and other replacement embodiment also falls into protection scope of the present invention.
Fig. 4 is a kind of example flow of the control method for Pneumatic conveyer of embodiment according to the present invention
Figure, as shown in figure 4, this method may comprise steps of:
Step 1001, the pressure value at the transfer pipeline of the Pneumatic conveyer is received；And
Step 1002, in the case where the pressure value is greater than or equal to maximum working pressure force value, according in the unit time
Received pressure value increment and delta threshold adjust the inlet amount of the Pneumatic conveyer.
Preferably, this method can also include: the pressure value be greater than or equal to maximum working pressure force value in the case where,
Charging and purge operation are carried out to the transfer pipeline of the Pneumatic conveyer.
Preferably, this method can also include: in the pressure value or more than or equal to maximum working pressure force value and in unit
The increment of the received pressure value of institute reduces the charging of the Pneumatic conveyer more than or equal in the case where delta threshold in time
Amount.
Preferably, this method can also include: and adjust the charging of the Pneumatic conveyer according to the following formula to execute member
The opening time T of part is to adjust the inlet amount of the Pneumatic conveyer:
Wherein, T0 is the initial opening time of the charging executive component, P1For the maximum working pressure force value, P3For peace
Total pressure force value, the safe pressure value are greater than the maximum working pressure force value and PcBy corresponding to being received in the unit time
Pressure value increment be greater than or equal to delta threshold at the time of pressure value, PcLess than or equal to the safe pressure value.
Preferably, this method can also include: to stop institute in the case where the pressure value is greater than the safe pressure value
State the operation of Pneumatic conveyer.
Preferably, this method can also include that the bypass executive component of control Pneumatic conveyer carries out the higher-order of oscillation to increase
By force to the dredging of the transfer pipeline of the Pneumatic conveyer.
Preferably, this method can also include that the auxiliary air compressor of control Pneumatic conveyer works to enhance to the gas
The dredging of the transfer pipeline of power conveying device.
Preferably, this method can also include: to carry out institute in the case where the pressure value is less than minimum working pressure force value
State the feed operation of Pneumatic conveyer；It is greater than or equal to the minimum working pressure force value in the pressure value and is less than and controls in advance
In the case where pressing pressure value, the feeding operation of the Pneumatic conveyer is carried out；And it is greater than or equal to institute in the pressure value
It states in the case where controlling pressure value in advance and being less than the maximum working pressure force value, to the transfer pipeline of the Pneumatic conveyer
Charging and purge operation are carried out, wherein the pressure value of control in advance is greater than the minimum working pressure force value and is less than the maximum
Working pressure.
Preferably, this method can also include that the maximum pressure peak value in received predetermined period works with the minimum
Pressure value and the pressure value of control in advance are compared, and are greater than or equal to the minimum working pressure in the maximum pressure peak value
Force value and be less than or equal to it is described control pressure value in advance in the case where, increase the inlet amount of the Pneumatic conveyer.
Preferably, this method can also include: and adjust the charging of the Pneumatic conveyer according to the following formula to execute member
The opening time T of part is to adjust the inlet amount of the Pneumatic conveyer:
Wherein, T0 is the initial opening time of the charging executive component, P11Pressure value, P are controlled in advance to be described0For institute
State maximum pressure peak value.
It should be understood that each specific embodiment of the above-mentioned control method for Pneumatic conveyer, exists
(as described above) is explained in detail for having done in the control equipment of Pneumatic conveyer, the embodiment of system, herein no longer
It repeats.Also, those skilled in the art can select any one of above-mentioned various embodiments with disclosure according to the present invention, or
Person selects the combination of above-mentioned various embodiments to be configured to control equipment, the system of Pneumatic conveyer, and other
Replacement embodiment also falls into protection scope of the present invention.
In addition, the present invention also provides including the provided control system for Pneumatic conveyer according to the present invention
Engineering machinery (not shown), the engineering machinery not only can be used for pneumatic transporting including embodiment according to the present invention as described above
The control system of device is sent, and the engineering machinery can also use above-mentioned control method and equipment for Pneumatic conveyer
Any one of and combinations thereof carry out above-mentioned control process.It should be understood that the engineering machinery can be any need to gas
The engineering machinery that power conveying device is controlled.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (18)
1. a kind of control method for Pneumatic conveyer, which is characterized in that this method comprises:
Receive the pressure value at the transfer pipeline of the Pneumatic conveyer；And
The pressure value be greater than or equal to maximum working pressure force value and in the unit time the increment of received pressure value be greater than
In the case where equal to delta threshold, the opening time of the charging executive component of the Pneumatic conveyer is adjusted according to the following formula
T is to adjust the inlet amount of the Pneumatic conveyer:
Wherein, T0 is the initial opening time of the charging executive component, P1For the maximum working pressure force value, P3To press safely
Force value, the safe pressure value are greater than the maximum working pressure force value and PcFor corresponding to pressure received in the unit time
The increment of force value is greater than or equal to pressure value at the time of delta threshold, PcLess than or equal to the safe pressure value.
2. the method according to claim 1, wherein this method further include:
In the case where the pressure value is greater than or equal to maximum working pressure force value, to the transfer pipeline of the Pneumatic conveyer
Carry out charging and purge operation.
3. the method according to claim 1, wherein this method further include: be greater than safety pressure in the pressure value
In the case where force value, stop the operation of the Pneumatic conveyer.
4. according to the method described in claim 2, it is characterized in that, this method further include: control the bypass of Pneumatic conveyer
Executive component carries out the higher-order of oscillation to enhance the dredging of the transfer pipeline to the Pneumatic conveyer.
5. according to the method described in claim 2, it is characterized in that, this method further includes the auxiliary sky for controlling Pneumatic conveyer
Compressor operation is to enhance the dredging of the transfer pipeline to the Pneumatic conveyer.
6. method described in any one of -5 claims according to claim 1, which is characterized in that this method further include:
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；
In the case where the pressure value is greater than or equal to the minimum working pressure force value and is less than control pressure value in advance, carry out
The feeding operation of the Pneumatic conveyer；And
In the case where the pressure value is greater than or equal to the control pressure value in advance and is less than the maximum working pressure force value,
Charging and purge operation are carried out to the transfer pipeline of the Pneumatic conveyer, wherein the control pressure value in advance is greater than described
Minimum working pressure force value and be less than the maximum working pressure force value.
7. according to the method described in claim 6, it is characterized in that, this method further include: by received predetermined period most
Big pressure peak is compared with the minimum working pressure force value and the pressure value of control in advance, in the maximum pressure peak value
More than or equal to the minimum working pressure force value and in the case where being less than or equal to the pressure value of control in advance, increase the gas
The inlet amount of power conveying device.
8. the method according to the description of claim 7 is characterized in that this method further include: adjust the gas according to the following formula
The opening time T of the charging executive component of power conveying device is to adjust the inlet amount of the Pneumatic conveyer:
Wherein, T0 is the initial opening time of the charging executive component, P11Pressure value, P are controlled in advance to be described0For it is described most
Big pressure peak.
9. a kind of control equipment for Pneumatic conveyer, which is characterized in that the equipment includes:
Receiver, the pressure value at transfer pipeline for receiving the Pneumatic conveyer；And
Controller, for being greater than or equal to maximum working pressure force value and the received pressure of institute within the unit time in the pressure value
In the case that the increment of value is more than or equal to delta threshold, the charging for adjusting the Pneumatic conveyer according to the following formula executes member
The opening time T of part is to adjust the inlet amount of the Pneumatic conveyer:
Wherein, T0 is the initial opening time of the charging executive component, P1For the maximum working pressure force value, P3To press safely
Force value, the safe pressure value are greater than the maximum working pressure force value and PcFor corresponding to pressure received in the unit time
The increment of force value is greater than or equal to pressure value at the time of delta threshold, PcLess than or equal to the safe pressure value.
10. equipment according to claim 9, which is characterized in that the controller is also used to:
In the case where the pressure value is greater than or equal to maximum working pressure force value, to the transfer pipeline of the Pneumatic conveyer
Carry out charging and purge operation.
11. equipment according to claim 9, which is characterized in that the controller is also used to:
In the case where the pressure value is greater than safe pressure value, stop the operation of the Pneumatic conveyer.
12. equipment according to claim 10, which is characterized in that the controller is also used to:
The bypass executive component for controlling Pneumatic conveyer carries out the higher-order of oscillation to enhance the conveying to the Pneumatic conveyer
The dredging of pipeline.
13. equipment according to claim 10, which is characterized in that the controller is also used to:
The auxiliary air compressor of control Pneumatic conveyer works to enhance the dredging of the transfer pipeline to the Pneumatic conveyer.
14. according to equipment described in any one of claim 9-13 claim, which is characterized in that the controller is also used
In:
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；
In the case where the pressure value is greater than or equal to the minimum working pressure force value and is less than control pressure value in advance, carry out
The feeding operation of the Pneumatic conveyer；And
In the case where the pressure value is greater than or equal to the control pressure value in advance and is less than the maximum working pressure force value,
Charging and purge operation are carried out to the transfer pipeline of the Pneumatic conveyer, wherein the control pressure value in advance is greater than described
Minimum working pressure force value and be less than the maximum working pressure force value.
15. equipment according to claim 14, which is characterized in that the controller is also used to:
Described control the maximum pressure peak value and the minimum working pressure force value in received predetermined period and in advance pressure value
It is compared, is greater than or equal to the minimum working pressure force value in the maximum pressure peak value and is controlled in advance less than or equal to described
In the case where pressing pressure value, increase the inlet amount of the Pneumatic conveyer.
16. equipment according to claim 15, which is characterized in that the controller is also used to: being adjusted according to the following formula
The opening time T of the charging executive component of the Pneumatic conveyer is to adjust the inlet amount of the Pneumatic conveyer:
Wherein, T0 is the initial opening time of the charging executive component, P11Pressure value, P are controlled in advance to be described0For it is described most
Big pressure peak.
17. a kind of control system for Pneumatic conveyer, which is characterized in that the system includes:
Pressure sensor, the pressure value at transfer pipeline for detecting the Pneumatic conveyer；And
The control equipment of Pneumatic conveyer is used for according to any one of claim 9-16 claim.
18. a kind of engineering machinery including the control system for Pneumatic conveyer described in claim 17.
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| CN111377243B (en) * | 2020-06-01 | 2020-08-28 | 山东天瑞重工有限公司 | Pneumatic conveying system and control method thereof |
| CN111735316B (en) * | 2020-06-19 | 2021-04-16 | 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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| US4863316A (en) * | 1987-07-01 | 1989-09-05 | The Perkin-Elmer Corporation | Closed loop powder flow regulator |
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