CN115685907A - Control method, system and equipment for multi-material cooperative dripping - Google Patents
Control method, system and equipment for multi-material cooperative dripping Download PDFInfo
- Publication number
- CN115685907A CN115685907A CN202211239456.4A CN202211239456A CN115685907A CN 115685907 A CN115685907 A CN 115685907A CN 202211239456 A CN202211239456 A CN 202211239456A CN 115685907 A CN115685907 A CN 115685907A
- Authority
- CN
- China
- Prior art keywords
- dripping
- weight
- dropping
- materials
- head tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 190
- 238000000034 method Methods 0.000 title claims abstract description 183
- 230000008569 process Effects 0.000 claims abstract description 148
- 238000003756 stirring Methods 0.000 claims abstract description 55
- 230000002159 abnormal effect Effects 0.000 claims abstract description 38
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 230000004069 differentiation Effects 0.000 claims abstract description 11
- 230000010354 integration Effects 0.000 claims abstract description 11
- 230000005856 abnormality Effects 0.000 claims description 34
- 230000001276 controlling effect Effects 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 230000002195 synergetic effect Effects 0.000 claims description 13
- 238000005303 weighing Methods 0.000 claims description 11
- 230000015654 memory Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000012847 fine chemical Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000004260 weight control Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Accessories For Mixers (AREA)
Abstract
The invention discloses a control method and a control system for multi-material cooperative dripping, wherein a dripping mode is selected, and the dripping mode comprises single dripping and combined cooperative dripping; starting a dropwise adding execution operation, operating the dropwise adding mode corresponding to at least one material, and obtaining the material in the elevated tank to be dropwise added into the reaction kettle; collecting and recording the initial weight of the head tank, calculating a target dropping rate according to the initial weight and preset time, and transmitting the target dropping rate to a control rate to serve as an initial set dropping rate; starting a stirring motor, stirring the materials in the dripping process, and monitoring the dripping weight of the head tank in the continuous dripping process in real time; setting the opening degree of a switch valve and an adjusting valve, comparing the real-time speed feedback with the control speed, controlling the opening degree of the adjusting valve through PID (proportion integration differentiation), and controlling the dropping speed of the corresponding material in synchronization with the operation of the stirring motor; and (4) realizing multi-material cooperation by adopting an abnormal judgment condition.
Description
Technical Field
The invention relates to the technical field of industrial automation, in particular to a control method, a system and equipment for multi-material cooperative dripping.
Background
In the fine chemical industry or the pharmaceutical industry, materials are required to be slowly added in a dropwise adding manner in the reaction process of a reaction kettle frequently so as to meet the production requirement. The current dropping is classified according to combination modes, and the current dropping mainly comprises three modes, namely single-material independent dropping, multi-material fixed combination synergistic dropping and multi-material free combination synergistic dropping.
(1) Independent dropping mode of single material
The method is most common at present, the control requirement is mainly uniform dripping, the dripping speed is controlled by a regulating valve or a variable frequency motor and the like during control, and the real-time dripping speed of the material is close to the set dripping speed until the dripping of the material is finished. This mode often can ignore the unusual judgement to the dropwise add in-process, and in governing valve or the inverter motor accommodation process, dropwise add real-time rate often is not a fixed unchangeable value, can have and produce certain fluctuation, probably leads to a certain stage volume in the dropwise add in-process, and the material dropwise add too much or too little influences product quality.
(2) Multi-material fixed combination synergetic dripping mode
When two kinds of even multiple materials of dropwise add simultaneously appear, often carry out automatic control as several independent dropwise add objects to many material dropwise add, each dropwise add separately, do not form the linkage, when a material dropwise add appears unusually, also can not report to the police and indicate or suspend other material dropwise add, cause the material of dropwise add in reation kettle not to form the certain proportion, easily appear reation kettle overtemperature, phenomenon such as product quality unstability, simultaneously to the violent product of reaction, safety risk can appear even.
(3) Multi-material free combination synergetic dripping mode
With the development of the fine chemical industry or the pharmaceutical industry, the product varieties produced by the same equipment in the existing paint and pharmaceutical multifunctional workshop are not fixed, so that different requirements are met on the dripping modes, one or more materials are selected to be cooperatively dripped according to a certain proportion mode in the production process according to the product characteristics, and the requirements of free combination cooperative control cannot be met according to the traditional automatic control method.
In summary, the drawbacks of the prior art are as follows: can only be according to fixed combination mode dropwise add, can't satisfy the requirement of independent assortment cooperative control, solve the problem that single material dropwise add the abnormal judgement of having nothing, when solving many material dropwise add, do not have synergistic problem between each material.
Disclosure of Invention
The invention aims to provide a control method and a control system for multi-material cooperative dripping, which solve the problem that no abnormal judgment is caused when a single material is dripped.
The invention provides a control method for multi-material cooperative dripping, which comprises the following steps:
selecting a dripping mode, wherein the dripping mode comprises single dripping and combined synergistic dripping, and setting process parameters of corresponding materials;
starting a dropwise adding execution operation, operating the dropwise adding mode corresponding to at least one material, and obtaining the material in the elevated tank to be dropwise added into the reaction kettle;
collecting and recording the initial weight of the head tank, calculating a target dropping rate according to the initial weight and preset time, and transmitting the target dropping rate to a control rate to serve as an initial set dropping rate;
starting a stirring motor, stirring the material in the dripping process, and monitoring the dripped weight of the head tank in the continuous dripping process in real time;
setting the opening degree of a switch valve and an adjusting valve, comparing the real-time speed feedback with the control speed, controlling the opening degree of the adjusting valve through PID (proportion integration differentiation), and controlling the dropping speed of the corresponding material in synchronization with the operation of the stirring motor;
carrying out process monitoring on the corresponding dripping process of at least one material, judging whether the dripping process is abnormal or not according to the judgment condition of the dripping abnormality, comparing the dripped weight with the theoretical weight, outputting an abnormality prompt if the dripping process is deviated, and executing pause operation; and if the dripping process is not abnormal, continuing to drip until the dripping of the head tank is finished.
Preferably, the combination coordination dripping mode comprises a process of synchronous operation of single dripping of multiple materials, the dripping process of the combination coordination dripping mode is monitored abnormally, and if no abnormality occurs in the dripping process, the multiple materials are continuously dripped in the single dripping mode until the dripping is finished; and if the corresponding dripping process of any one material is abnormal in the dripping process, suspending the dripping operation of all the materials until the dripping operation of all the materials is resumed.
Preferably, the starting the stirring motor, stirring the material in the dropping process, and monitoring the dropped weight of the head tank in the continuous dropping process in real time comprises:
and judging whether the dripping weight of the head tank is continuously in the dripping process or not, comparing the dripping weight of the head tank with a preset weight, stopping the operation of the stirring motor when the dripping weight of the head tank is smaller than a preset maximum weight value, and continuously carrying out abnormal monitoring on the dripping process.
Preferably, the corresponding dripping process of at least one material is monitored in the process, whether the dripping process is abnormal or not is judged according to the judgment condition of the dripping abnormality, the dripped weight is compared with the theoretical weight, if the dripping process is deviated, an abnormality prompt is output, and the pause operation is executed; if no abnormity occurs in the dripping process, continuing to drip until the dripping of the head tank is completed comprises the following steps:
under the condition that no abnormity occurs in the dripping process, setting a fully-open regulating valve, carrying out delayed operation, and continuously dripping until the dripping weight of the head tank is less than the preset minimum weight;
performing a closing operation on the switching valve and the regulating valve;
wherein the preset minimum weight is set according to the viscosities of different materials.
Preferably, the step of performing process monitoring on the corresponding dropping process of at least one material, and the step of judging whether the dropping process is abnormal according to the judgment condition of the dropping abnormality further includes:
monitoring the dripping condition in the dripping process, and judging whether the dripping condition is abnormal according to the judgment condition of dripping abnormality, wherein the judgment condition of dripping abnormality further comprises the following steps:
the elevated tank stirring motor, the switch valve or the regulating valve have faults; and/or the presence of a gas in the gas,
the temperature of the reaction kettle exceeds the temperature range required by the process; and/or the presence of a gas in the gas,
when the stirring motor of the reaction kettle stops operating, the dripped materials are accumulated to reach the preset risk amount.
Preferably, the initial weight of the head tank is collected and recorded, a weighing module is arranged on the head tank, the weighing module is in communication connection with a distributed control system and transmits a weight signal to the distributed control system, a human-computer interface is arranged on the head tank, and a feedback value controlled by a PID of the dropping control valve is displayed through the human-computer interface.
Preferably, the process parameters of the material comprise: the method comprises the following steps of theoretical weight, target speed, speed feedback, control speed, set time, initial opening and valve opening, wherein the theoretical weight = the target speed and the target speed = the initial weight/set time, the control speed is a set value controlled by a PID (proportion integration differentiation) of a dropping adjusting valve, the dropping is equal to the target speed when starting, and the dropping speed set value is changed through the control speed in the dropping process.
The invention provides a control system for multi-material cooperative dripping, which comprises:
the mode selection module is used for selecting a dripping mode, wherein the dripping mode comprises single dripping and combined synergistic dripping, and process parameters of corresponding materials are set;
the execution module is used for starting dropwise adding execution operation, operating the dropwise adding mode corresponding to at least one material, and obtaining the material in the elevated tank to be dropwise added into the reaction kettle;
the setting module is used for acquiring and recording the initial weight of the head tank, calculating a target dropping rate according to the initial weight and preset time, and transmitting the target dropping rate to a control rate to serve as an initial set dropping rate;
the stirring module is used for starting a stirring motor, stirring the materials in the dripping process and monitoring the dripping weight of the head tank in the continuous dripping process in real time;
the control module is used for setting the opening degree of a switch valve and an adjusting valve, comparing the real-time rate feedback with the control rate, controlling the opening degree of the adjusting valve through PID (proportion integration differentiation), synchronizing the operation of the adjusting valve and the operation of the stirring motor, and controlling the dropping rate of the corresponding material;
the monitoring module is used for carrying out process monitoring on the corresponding dripping process of at least one material, judging whether the dripping process is abnormal or not according to the judgment condition of the dripping abnormality, comparing the dripped weight with the theoretical weight, outputting an abnormality prompt if the dripping process is deviated, and executing pause operation; and if the dripping process is not abnormal, continuing to drip until the dripping of the head tank is finished.
Preferably, the combination coordination dripping mode comprises a process of synchronous operation of single dripping of multiple materials, the dripping process of the combination coordination dripping mode is monitored abnormally, and if no abnormality occurs in the dripping process, the multiple materials are continuously dripped in the single dripping mode until the dripping is finished; and if the dropping process corresponding to any one material is abnormal in the dropping process, suspending the dropping operation of all the materials until the dropping operation of all the materials is resumed.
The control equipment for multi-material cooperative dripping comprises a memory and a processor, wherein a computer readable instruction is stored in the memory, and when the processor executes the computer readable instruction, the control method for multi-material cooperative dripping is realized.
Aiming at the prior art, the invention has the following beneficial effects:
according to the control method of the multi-material cooperative dripping, materials can be selected to be combined randomly during dripping; during the dripping process, theoretical data and actual data can be observed through the HMI, so that an operator can correct the deviation according to the production condition; whether the dripping process is normal or not is judged by comparing the deviation of the 'dripped weight' with the 'theoretical weight', an alarm can be given when the deviation reaches a certain value, and if the deviation is continuously increased, the dripping process can be automatically suspended.
When multiple materials are cooperatively dripped, when one material is abnormally dripped, all other materials are immediately dripped in a pause manner, so that the production risk is reduced; when a single material is independently dripped, a simple PID (proportion integration differentiation) regulation control is not adopted, and after an abnormal judgment condition is added, the stability of a product can be better ensured, and the occurrence of safety accidents is reduced.
When multiple materials are cooperatively dripped, the materials can be freely combined, the materials are not fixed, even if a product is replaced, the program does not need to be changed, and the application scene is wider; when many materials are cooperateed and are dripped, the dripped materials are abnormal, and the dripping of other materials can be influenced, so that the real cooperation is realized.
Drawings
FIG. 1 is a schematic overall flow chart of a control method for multi-material cooperative dropwise addition in the first embodiment of the present invention;
fig. 2 is a schematic workflow diagram of a control method for multi-material cooperative dripping according to a first embodiment of the present invention;
FIG. 3 is a schematic view of an additional control panel according to a first embodiment of the present invention;
FIG. 4 is a schematic flow chart of a single dropping method according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a specific combination synergistic dropping manner in the first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, the method for controlling the multi-material cooperative dropping provided by the present invention comprises the following steps:
s1: selecting a dripping mode, wherein the dripping mode comprises single dripping and combined synergistic dripping, and setting process parameters of corresponding materials; the following operations are carried out on the control panel: selecting the materials to be dripped separately in the dripping selection, setting the setting time and the initial opening of the corresponding materials, and operating the start button and the stop button of the separate dripping. Selecting a 'simultaneous dripping' button, selecting materials to be dripped in the 'dripping selection', setting the 'set time' and the 'initial opening degree' of the corresponding materials, and then operating 'start', 'stop', 'recovery' and 'stop' buttons in the 'simultaneous dripping'.
S2: starting a dropwise adding execution operation, operating the dropwise adding mode corresponding to at least one material, and obtaining the material in the elevated tank to be dropwise added into the reaction kettle, wherein the step is shown in a reference figure 2;
s3: collecting and recording the initial weight of the head tank, calculating a target dropping rate according to the initial weight and preset time, and transmitting the target dropping rate to a control rate to serve as an initial set dropping rate;
s4: starting a stirring motor, stirring the materials in the dripping process, and monitoring the dripping weight of the head tank in the continuous dripping process in real time; stirring in this embodiment can mean the stirring in elevated tank and reation kettle, prevents that empty stirring from causing the damage to elevated tank and reation kettle.
S5: setting the opening degree of a switch valve and an adjusting valve, comparing the real-time speed feedback with the control speed, controlling the opening degree of the adjusting valve through PID (proportion integration differentiation), and controlling the dropping speed of the corresponding material in synchronization with the operation of the stirring motor; PID (Proportional Integral Derivative), a control system for controlling industrial process according to the proportion, integral and Derivative of error generated by comparing the real-time data collected information of the controlled object with the given value. When a single material is independently dripped, a simple PID (proportion integration differentiation) regulation control is not adopted, and after conditions such as abnormal judgment are added, the stability of a product can be better ensured, and safety accidents are reduced.
S6: carrying out process monitoring on the corresponding dripping process of at least one material, judging whether the dripping process is abnormal or not according to the judgment condition of the dripping abnormality, comparing the dripped weight with the theoretical weight, outputting an abnormality prompt if the dripping process is deviated, and executing pause operation; and if the dripping process is not abnormal, continuing to drip until the dripping of the head tank is finished. When many materials are cooperateed and are dripped, the dripped materials are abnormal, and the dripping of other materials can be influenced, so that the real cooperation is realized.
Referring to fig. 3, the process parameters set on the dripping scheduling panel are as follows: current weight: each elevated tank is provided with a weighing module, the weighing module transmits a weight signal to DCS (Distributed Control System) in a communication mode, namely a Distributed Control System, and the weighing module displays on an HMI (human machine interface) by adopting an instrument Control System which has the advantages of decentralized Control function, centralized display operation, consideration of division and autonomy and comprehensive coordination design principle on the basis of a microprocessor. Theoretical weight: after a certain period of time, if the dropping is carried out at the "target rate", the weight which has been dropped theoretically is equal to the "dropped time" multiplied by the "target rate". Dropped weight: after the dripping time has elapsed, the weight which has actually been dripped. Target rate: when the dripping program is started, recording the initial weight of the head tank, dividing the initial weight by the set time to obtain the theoretical dripping speed which cannot be changed in the whole dripping process and is used as a reference object for adjusting and controlling the speed in the dripping process. Rate feedback: the elevated tank weighing module has the function of implementing speed display, can transmit speed feedback signals to the DCS in a communication mode, displays the speed feedback signals on an HMI (human-machine interface), and is a feedback value controlled by the PID of the dripping adjusting valve. Controlling the rate: the set value of the PID control of the dripping regulating valve is equal to the target speed when the dripping is started, and the set value of the dripping speed can be changed by controlling the speed in the dripping process. Remaining rate: and if the dripping of the current residual overhead tank materials is completed on time according to the set time, the rate of the residual materials to be dripped is remained. Setting time: the time required for completing all the dropwise adding is set according to the process requirements. Dripping time: the time was measured from the start of the dropping. Initial opening degree: before the dropwise add begins, the dropwise add governing valve is all in the closed condition, if direct aperture with PID control governing valve, the governing valve can slowly be opened greatly, rate feedback in this in-process also can only slowly approach to target speed, this volume that can lead to dropwise add to reation kettle when beginning can't satisfy the technological requirement, for letting the rate feedback of dropwise add be close to target speed with the mode that reaches the fastest, so need set up an initial aperture, when the dropwise add begins, the governing valve can be opened initial aperture immediately, then PID adjusts, the adjustment time has been shortened. Opening degree of the valve: an adjusting valve is arranged below each elevated tank, the opening degree of the adjusting valve is transmitted to DCS through a current signal of 4-20 mA, and the opening degree is displayed on HMI (human-machine interface); the real-time rate feedback is compared with the control rate, and the opening of the regulating valve is controlled by PID (proportion integration differentiation), so that the real-time rate feedback infinitely approaches to the control rate. Stirring: the operating condition of overhead tank need be monitored to the dropwise add in-process, just allows the dropwise add when only overhead tank stirring operation, and the material of overhead tank is less, and when the weight is lower, need close the stirring, prevent that the stirring from not causing the stirring idle running in the material, damaging agitator motor.
Specifically, the combination coordination dripping mode comprises a process of synchronous operation of single dripping of multiple materials, the dripping process of the combination coordination dripping mode is monitored abnormally, and if no abnormality occurs in the dripping process, the multiple materials are continuously dripped according to the single dripping mode until the dripping is finished; and if the dropping process corresponding to any one material is abnormal in the dropping process, suspending the dropping operation of all the materials until the dropping operation of all the materials is resumed.
In one example, as shown in FIG. 4, when the individual dropping is selected in the dropping manner, the operation when the individual dropping is selected is as follows,
firstly, before starting, an individual dripping mode is selected, and two parameters of 'set time' and 'initial opening degree' are set.
Secondly, starting dropwise addition: after the dropwise addition is started, the dropwise addition procedure of the corresponding material is operated.
Thirdly, recording the initial weight of the head tank: the head tank initial weight is recorded. Calculating a theoretical target speed by dividing the initial weight of the head tank by the set time; and transmitting the target rate to the control rate as an initial set dropping rate, and if no abnormity occurs in the dropping process, keeping the value until the dropping is finished.
Fourthly, opening a switch valve at the bottom of the head tank: because the phenomenon that the regulating valve is not closed tightly often can appear, a switch valve is usually installed at the bottom of the head tank, and materials in the head tank are prevented from leaking when the regulating valve is not closed tightly.
Fifthly, starting the stirring motor: for letting overhead tank dropwise add in-process material even, reduce the valve that dropwise add in-process answer the material inequality and cause and block up the phenomenon, before overhead tank material can cover stirring vane, agitator motor was in running state always.
Sixthly, adjusting the opening initial opening of the valve: the opening of the regulating valve is quickly close to the opening value meeting the dropping speed.
Seventhly, carrying out PID regulation on the regulating valve according to the control rate: the regulating valve is automatically regulated through PID operation, and the set value of PID is equal to the control rate.
Eighth, elevated tank weight control, stop agitator motor: and (3) judging whether the weight of the head tank is less than 20Kg in the dripping process, and if the weight of the head tank is less than 20Kg, stopping the stirring motor. The 20Kg is set according to the field device, and in the debugging stage, the maximum weight displayed by the head tank weighing module is needed to be debugged when the stirring blade is not submerged.
Ninth, monitoring the dropping process: the dripping condition is monitored all the time in the dripping process, when abnormality occurs, the dripping device needs to enter a pause state, and the judgment conditions of the dripping abnormality are as follows: the stirring motor or the valve of the elevated tank fails; the temperature of the reaction kettle exceeds the temperature range required by the process. The temperature of the reaction kettle exceeds the process allowable range, and if the dripping is continued, the temperature exceeding range is expanded, so that the safety risk is caused; the operation of a stirring motor of the reaction kettle is stopped, and in the dripping process, if the stirring is stopped, the dripped materials have the risk of accumulation, and the materials are likely to cause implosion after reaching a certain amount, so that the safety risk is caused; the drop weight is too great a deviation from the theoretical weight. Under the action of PID regulation in the dripping process, rate feedback approaches to control rate, but the rate feedback cannot be completely equal to the control rate, when dripping for a long time, the phenomenon that the dripped weight is too large or too small compared with the theoretical weight due to instantaneous deviation accumulation can be caused, and if the dripping is continued according to the current mode, the product quality can be influenced. Before the deviation is too large, the warning of the too large deviation is given, and the 'control rate' can be changed by manual intervention on the premise of meeting the process requirements, so that the trend of the continuous increase of the deviation is reduced.
Tenth, pause: when the dripping is abnormally suspended, the HMI (human-machine interface) prompts the abnormal stopping of the dripping, automatically closes the dripping adjusting valve and the switch valve at the bottom of the head tank, and determines whether the operation needs to be stopped according to the weight of the head tank at the moment by stirring. An operator can search for an abnormal reason according to the prompt, and after the solution is completed, whether the 'control rate' is changed or not is determined according to the actual situation on site.
Eleventh, resume: and re-opening the bottom valve of the high-level tank, and opening the regulating valve to the initial opening degree.
Twelfth, fully opening the regulating valve and delaying: and (3) dripping less than 2Kg into the head tank under the condition that no abnormality occurs in the dripping process. 2Kg sets up according to the material, and the consistency of different materials is inequality, and when the dropwise add was accomplished, can not ensure that the weight in elevated tank must be equal to 0, so when the elevated tank was less than a certain value, the time delay was for a period of time, just can regard the elevated tank to have accomplished the dropwise add.
Thirteenth, close bottom switch valve and regulating valve: all equipment was shut down before the addition was complete.
In one embodiment, as shown in FIG. 5, when the drop mode is selected to be single drop, the selection combination is operated in conjunction with the drop,
firstly, selecting materials A and B to be simultaneously dripped: in the scheme, the material A and the material B are selected to be simultaneously dripped in a synergic mode, and respective parameters are set according to process requirements before starting.
Secondly, starting and simultaneously dripping: and simultaneously starting the dropping algorithm of the material A and the material B.
Thirdly, dropwise adding the material A, and finishing dropwise adding the material A: and (3) dropwise adding the material A according to the set parameters, and if no abnormity occurs in the dropwise adding process, finishing the dropwise adding in an independent dropwise adding mode all the time.
Fourthly, dropwise adding the material B, and finishing dropwise adding the material B: and dropwise adding the material B according to the set parameters, and if no abnormity occurs in the dropwise adding process, finishing the dropwise adding in an independent dropwise adding mode all the time.
Fifthly, monitoring the dropping process, and suspending the dropping of the materials A and B: in the dropping process, if any material is abnormally dropped to cause suspension, all the materials being dropped need to be suspended at the same time, so that the materials dropped into the reaction kettle can be ensured to be always in a certain proportion, and the dropping of the material A and the material B can be resumed together only after all the problems are solved.
Sixthly, finishing the simultaneous dropwise adding of the materials A and B: the completion of the dropwise addition of the material A and the material B can represent the completion of the dropwise addition.
Specifically, start agitator motor, to stir the material in the dropwise add in-process, real time monitoring in last dropwise add in-process the overhead tank has dripped the weight and includes:
and judging whether the dripping weight of the head tank is in the continuous dripping process or not, comparing the dripping weight of the head tank with a preset weight, stopping the operation of the stirring motor when the dripping weight of the head tank is smaller than a preset maximum weight value, and continuously carrying out abnormal monitoring on the dripping process.
Specifically, the corresponding dripping process of at least one material is monitored, whether the dripping process is abnormal or not is judged according to the judgment condition of the dripping abnormality, the dripped weight is compared with the theoretical weight, if the dripping process is deviated, an abnormality prompt is output, and the pause operation is executed; if no abnormity occurs in the dripping process, continuing to drip until the dripping of the head tank is completed comprises the following steps:
under the condition that no abnormity occurs in the dripping process, setting a fully-open regulating valve, carrying out delayed operation, and continuously dripping until the dripping weight of the head tank is less than the preset minimum weight;
performing a closing operation on the switching valve and the regulating valve;
wherein the preset minimum weight is set according to the viscosities of different materials.
Specifically, the step of performing process monitoring on the corresponding dropping process of at least one material, and the step of judging whether the dropping process is abnormal according to the judgment condition of the dropping abnormality further includes:
monitoring the dripping condition in the dripping process, and judging whether the dripping condition is abnormal according to the judgment condition of dripping abnormality, wherein the judgment condition of dripping abnormality further comprises the following steps:
the elevated tank stirring motor, the switch valve or the regulating valve have faults; and/or the presence of a gas in the gas,
the temperature of the reaction kettle exceeds the temperature range required by the process; and/or the presence of a gas in the gas,
when the stirring motor of the reaction kettle stops operating, the dripped materials are accumulated to reach the preset risk amount.
Specifically, in the initial weight of the head tank is collected and recorded, a weighing module is arranged on the head tank, the weighing module is in communication connection with a distributed control system and transmits a weight signal to the distributed control system, a human-computer interface is arranged on the head tank, and a feedback value controlled by a PID of the dropping control valve is displayed through the human-computer interface.
Example two
Based on the same conception, the invention provides a control system for multi-material cooperative dripping, which comprises:
the mode selection module is used for selecting a dripping mode, wherein the dripping mode comprises single dripping and combined synergistic dripping, and process parameters of corresponding materials are set;
the execution module is used for starting dropwise adding execution operation, operating the dropwise adding mode corresponding to at least one material, and obtaining the material in the elevated tank to be dropwise added into the reaction kettle;
the setting module is used for acquiring and recording the initial weight of the head tank, calculating a target dropping rate according to the initial weight and preset time, and transmitting the target dropping rate to a control rate to serve as an initial set dropping rate;
the stirring module is used for starting a stirring motor, stirring the materials in the dripping process and monitoring the dripping weight of the head tank in the continuous dripping process in real time;
the control module is used for setting the opening degree of a switch valve and an adjusting valve, comparing the real-time rate feedback with the control rate, controlling the opening degree of the adjusting valve through PID (proportion integration differentiation), synchronizing the operation of the adjusting valve and the operation of the stirring motor, and controlling the dropping rate of the corresponding material;
the monitoring module is used for carrying out process monitoring on the corresponding dripping process of at least one material, judging whether the dripping process is abnormal or not according to the judgment condition of the dripping abnormality, comparing the dripped weight with the theoretical weight, outputting an abnormality prompt if the dripping process is deviated, and executing pause operation; and if the dripping process is not abnormal, continuing to drip until the dripping of the head tank is finished.
Specifically, the combination coordination dripping mode comprises a process of synchronous operation of single dripping of multiple materials, the dripping process of the combination coordination dripping mode is monitored abnormally, and if no abnormality occurs in the dripping process, the multiple materials are continuously dripped according to the single dripping mode until the dripping is finished; and if the dropping process corresponding to any one material is abnormal in the dropping process, suspending the dropping operation of all the materials until the dropping operation of all the materials is resumed.
The specific principles and implementation methods of the mode selection module, the execution module, the setting module, the stirring module, the control module and the monitoring module are all as described in the first embodiment of the present invention, and are not described herein again.
The control equipment for multi-material cooperative dripping comprises a memory and a processor, wherein a computer readable instruction is stored in the memory, and when the processor executes the computer readable instruction, the control method for multi-material cooperative dripping is realized.
The control device for the coordinated multi-material dripping may generate a large difference due to different configurations or performances, and may include one or more processors (CPUs) and memories, and one or more storage media (e.g., one or more mass storage devices) for storing applications or data. The memory and storage medium may be, among other things, transient or persistent storage. The program stored in the storage medium may include one or more modules, and each module may include a series of instruction operations in the control device for the coordinated dripping of the multiple materials.
Further, the processor may be configured to communicate with a storage medium, and execute a series of instruction operations in the storage medium on the control device for the multi-material co-dripping.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A control method for multi-material cooperative dripping is characterized by comprising the following steps:
selecting a dripping mode, wherein the dripping mode comprises single dripping and combined synergistic dripping, and setting process parameters of corresponding materials;
starting a dropwise adding execution operation, operating the dropwise adding mode corresponding to at least one material, and obtaining the material in the elevated tank to be dropwise added into the reaction kettle;
collecting and recording the initial weight of the head tank, calculating a target dropping rate according to the initial weight and preset time, and transmitting the target dropping rate to a control rate to serve as an initial set dropping rate;
starting a stirring motor, stirring the materials in the dripping process, and monitoring the dripping weight of the head tank in the continuous dripping process in real time;
setting the opening degree of a switch valve and an adjusting valve, comparing the real-time speed feedback with the control speed, controlling the opening degree of the adjusting valve through PID (proportion integration differentiation), and controlling the dropping speed of the corresponding material in synchronization with the operation of the stirring motor;
carrying out process monitoring on the corresponding dripping process of at least one material, judging whether the dripping process is abnormal or not according to the judgment condition of the dripping abnormality, comparing the dripped weight with the theoretical weight, outputting an abnormal prompt if the dripping process is deviated, and executing pause operation; and if the dripping process is not abnormal, continuing to drip until the dripping of the head tank is finished.
2. The method for controlling the cooperative dripping of the multiple materials according to claim 1, wherein the cooperative dripping mode comprises a process of synchronous operation of the single dripping of the multiple materials, the dripping process of the cooperative dripping mode is monitored abnormally, and if no abnormality occurs in the dripping process, the multiple materials are continuously dripped in the single dripping mode until the dripping is finished; and if the dropping process corresponding to any one material is abnormal in the dropping process, suspending the dropping operation of all the materials until the dropping operation of all the materials is resumed.
3. The method for controlling the cooperative dripping of multiple materials according to claim 1, wherein the starting of the stirring motor to stir the materials during the dripping process and the real-time monitoring of the dripped weight of the head tank during the continuous dripping process comprise:
and judging whether the dripping weight of the head tank is continuously in the dripping process or not, comparing the dripping weight of the head tank with a preset weight, stopping the operation of the stirring motor when the dripping weight of the head tank is smaller than a preset maximum weight value, and continuously carrying out abnormal monitoring on the dripping process.
4. The method for controlling the cooperative dripping of multiple materials according to claim 1, wherein the corresponding dripping process of at least one material is monitored in process, whether abnormality occurs is judged according to the judgment condition of the dripping abnormality, the dripped weight is compared with the theoretical weight, and if deviation occurs in the dripping process, an abnormality prompt is output and a pause operation is executed; if no abnormity occurs in the dripping process, continuing to drip until the dripping of the head tank is completed comprises the following steps:
under the condition that no abnormity occurs in the dripping process, setting a fully-open regulating valve, carrying out delayed operation, and continuously dripping until the dripping weight of the head tank is less than the preset minimum weight;
performing a closing operation on the switching valve and the regulating valve;
wherein the preset minimum weight is set according to the viscosities of different materials.
5. The method for controlling the cooperative dripping of multiple materials according to claim 1, wherein the step of monitoring the corresponding dripping process of at least one material and the step of determining whether the corresponding dripping process is abnormal according to the determination condition of the dripping abnormality further comprises the steps of:
the condition of dropwise add is monitored in the dropwise add process, and whether the judgment condition of dropwise add abnormity appears is judged, the judgment condition of dropwise add abnormity also comprises:
the elevated tank stirring motor, the switch valve or the regulating valve have faults; and/or the presence of a gas in the gas,
the temperature of the reaction kettle exceeds the temperature range required by the process; and/or the presence of a gas in the gas,
when the stirring motor of the reaction kettle stops operating, the dripped materials are accumulated to reach the preset risk amount.
6. The method for controlling the cooperative dripping of multiple materials according to claim 1, wherein in the step of collecting and recording the initial weight of the head tank, a weighing module is arranged on the head tank, the weighing module is in communication connection with a distributed control system and transmits a weight signal to the distributed control system, a human-computer interface is arranged on the head tank, and a feedback value of the PID control of the dripping regulating valve is displayed through the human-computer interface.
7. The method for controlling the cooperative dripping of multiple materials according to claim 1, wherein the process parameters of the materials comprise: the control method comprises the following steps of theoretical weight, target speed, speed feedback, control speed, set time, initial opening and valve opening, wherein the theoretical weight = the target speed multiplied by the dripping time, the target speed = the initial weight/set time, the control speed is a set value controlled by a dripping adjusting valve PID, the dripping is equal to the target speed when the dripping is started, and the dripping speed set value is changed through the control speed in the dripping process.
8. The utility model provides a control system that dropwise add is in coordination to many materials which characterized in that includes:
the mode selection module is used for selecting a dripping mode, wherein the dripping mode comprises single dripping and combined synergistic dripping, and process parameters of corresponding materials are set;
the execution module is used for starting dropwise adding execution operation, operating the dropwise adding mode corresponding to at least one material, and obtaining the material in the elevated tank to be dropwise added into the reaction kettle;
the setting module is used for acquiring and recording the initial weight of the head tank, calculating a target dropping rate according to the initial weight and preset time, and transmitting the target dropping rate to a control rate to serve as an initial set dropping rate;
the stirring module is used for starting a stirring motor, stirring the materials in the dripping process and monitoring the dripping weight of the head tank in the continuous dripping process in real time;
the control module is used for setting the opening degree of a switch valve and an adjusting valve, comparing the real-time rate feedback with the control rate, controlling the opening degree of the adjusting valve through PID (proportion integration differentiation), synchronizing the operation of the adjusting valve and the operation of the stirring motor, and controlling the dropping rate of the corresponding material;
the monitoring module is used for carrying out process monitoring on the corresponding dripping process of at least one material, judging whether the dripping process is abnormal or not according to the judgment condition of the dripping abnormality, comparing the dripped weight with the theoretical weight, outputting an abnormality prompt if the dripping process is deviated, and executing pause operation; and if the dripping process is not abnormal, continuing to drip until the dripping of the head tank is finished.
9. The system for controlling the cooperative dripping of multiple materials according to claim 8, wherein the combination cooperative dripping mode comprises a process of synchronous operation of single dripping of multiple materials, the dripping process of the combination cooperative dripping mode is monitored abnormally, and if no abnormality occurs in the dripping process, the multiple materials are continuously dripped in the single dripping mode until the dripping is finished; and if the dropping process corresponding to any one material is abnormal in the dropping process, suspending the dropping operation of all the materials until the dropping operation of all the materials is resumed.
10. A control device for multi-material cooperative dripping comprises a memory and a processor, wherein the memory stores computer readable instructions, and the processor executes the computer readable instructions to realize the control method for multi-material cooperative dripping as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211239456.4A CN115685907A (en) | 2022-10-11 | 2022-10-11 | Control method, system and equipment for multi-material cooperative dripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211239456.4A CN115685907A (en) | 2022-10-11 | 2022-10-11 | Control method, system and equipment for multi-material cooperative dripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115685907A true CN115685907A (en) | 2023-02-03 |
Family
ID=85065236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211239456.4A Pending CN115685907A (en) | 2022-10-11 | 2022-10-11 | Control method, system and equipment for multi-material cooperative dripping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115685907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117463277A (en) * | 2023-12-28 | 2024-01-30 | 广东摩尔物联技术有限公司 | Reaction kettle system |
-
2022
- 2022-10-11 CN CN202211239456.4A patent/CN115685907A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117463277A (en) * | 2023-12-28 | 2024-01-30 | 广东摩尔物联技术有限公司 | Reaction kettle system |
| CN117463277B (en) * | 2023-12-28 | 2024-03-22 | 广东摩尔物联技术有限公司 | Reaction kettle system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2327500C (en) | Control system for multi-pump operation | |
| CN115685907A (en) | Control method, system and equipment for multi-material cooperative dripping | |
| US8612042B2 (en) | Online recipe synchronization in a real-time batch executive environment | |
| CN106227144B (en) | Low-pressure high-temperature steam device control system | |
| MX2007007185A (en) | Method and system for controlling a process in a plant. | |
| CA2746110A1 (en) | Simulation-supported method for controlling and/or regulating compressed air stations | |
| CN110409206A (en) | A kind of automatic control system and its operation method of papermaking pulping section | |
| CN210270593U (en) | Novel automatic control system of centrifugal machine | |
| CN112963295A (en) | System and method for controlling working state of black start electric control system of water turbine speed regulator | |
| CN111690085B (en) | Automatic control method for chloroprene latex polymerization process | |
| CN109564771B (en) | Method and system for operating a high pressure ethylene polymerization unit | |
| CN105644724A (en) | Control method and system for loading and unloading of cargo oil | |
| CN107621813A (en) | A kind of liquid caustic soda intelligently fills measurement control method | |
| EP3334934B1 (en) | System for the control of a compression system | |
| Li et al. | Design of Gluing Process Control System Based on DCS System | |
| CN113867134A (en) | PID control dead zone adjusting method based on programmable logic controller | |
| CN108721934A (en) | Full-process automatic control method and system for rectifying tower | |
| CN212811597U (en) | Medicine crystallizer agitator motor speed governing control circuit | |
| CN213327364U (en) | Calcium hydroxide intelligent water distribution system | |
| CN219518668U (en) | Automatic stirring system | |
| CN101590344B (en) | Automatic control system of leaf filtering workshop section | |
| CN115444158B (en) | Tobacco redrying method, system, device and computer readable storage medium | |
| CN114997652B (en) | Method, system, storage medium and electronic equipment for automatically starting and stopping oil pipeline | |
| EP2948822A1 (en) | Methods and apparatus to interface with a digital control loop | |
| CN211349084U (en) | Many platforms adorn sour controlling means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: 310053 No. 309 Liuhe Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: Zhongkong Technology Co.,Ltd. Address before: 310053 No. 309 Liuhe Road, Binjiang District, Hangzhou City, Zhejiang Province Applicant before: ZHEJIANG SUPCON TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| CB02 | Change of applicant information |