CN108246104A - Digitize ultrafiltration system and method - Google Patents
Digitize ultrafiltration system and method Download PDFInfo
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- CN108246104A CN108246104A CN201711493150.0A CN201711493150A CN108246104A CN 108246104 A CN108246104 A CN 108246104A CN 201711493150 A CN201711493150 A CN 201711493150A CN 108246104 A CN108246104 A CN 108246104A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/22—Controlling or regulating
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The invention discloses digitlization ultrafiltration system and methods, it is related to hyperfiltration technique field, at least one ultrafiltration membrane packet that its system includes flow pipe, is connected on flow pipe and is arranged in parallel, an and control subsystem, control subsystem includes the digital sensor, input pressure sensor and the pressure sensor output that are set on flow pipe, further includes executive item and a control terminal；What it is based on this system is with liquid method：Control terminal control flow control valve modulation makes transmembrane pressure meet transmembrane pressure achievement data；Digital sensor is detected, and feed back to control terminal the index real time data of permeate；Control terminal compares the target goals data that index real time data is stored with it, judges whether to match, and each executive item is controlled to act, until the index real time data of permeate exports target permeate after meeting target goals data.The present invention is judged by comparing the corresponding conductivity data of each environmental parameter selection, improves the accuracy of ultrafiltration.
Description
Technical field
The present invention relates to hyperfiltration technique field more particularly to a kind of digitlization ultrafiltration system and methods.
Background technology
Ultrafiltration is a kind of to sieve as separation principle, and using pressure as the membrane separating process of motive force, filtering accuracy exists
In 0.005-0.002 μ ms, particle, colloid, bacterium, heat source and polymer organic matter in water can be effectively removed, it can be wide
General separation, concentration, purification applied to substance.
Authorization Notice No. is that the Chinese utility model patent of CN203648395U discloses automatic ultrafiltration system, including diaphragm
Pump.Ultrafiltration membrane packet and PLC controller, ultrafiltration membrane packet have inlet, liquid outlet and liquid return hole, the port of export of diaphragm pump and ultrafiltration
First pressure sensor is connected between film packet elder sister's inlet, second pressure sensor is connected at the liquid return hole of ultrafiltration membrane packet,
Second pressure sensor connects shutoff valve, and the liquid outlet of ultrafiltration membrane packet is connect with third pressure sensor, first pressure sensor,
Second pressure sensor, third pressure sensor and shutoff valve are connect respectively with PLC controller.What the utility model patent disclosed
Three pressure sensors that technical solution can be connected according to ultrafiltration membrane packet adjust shut off valve opening and pump discharge, so as to adjust
Transmembrane pressure is saved, obtains most rational ultra-filtration conditions, it can be achieved that continuous ultrafiltration process, improves ultrafiltration efficiency.
But can not accurately judge whether permeate is needed target permeate only by control transmembrane pressure, surpass
Filter precision is unable to control.
Invention content
The present invention provides a kind of digitlization ultrafiltration system and method, can improve the degree of regulation of transmembrane pressure, improve
Ultrafiltration precision.
The first scheme of the invention provides a kind of digitlization ultrafiltration system, including：
For sample liquid to be supplied to input the runner pipe that simultaneously output-index real time data meets the target permeate of target goals data demand
Road, at least one ultrafiltration membrane packet for being connected on the flow pipe and being arranged in parallel and a control subsystem；
The control subsystem includes：
It is set on the flow pipe to detect multigroup digital sensor of the index real time data of permeate；
It is set on the flow pipe to detect the input pressure of ultrafiltration membrane packet input terminal and output terminal hydraulic pressure respectively
Sensor and pressure sensor output；
It is set on the flow pipe, the executive item for controlling each node circulation status of the flow pipe；And
It is connect with each digital sensor, input pressure sensor and pressure sensor output, and controls the executive item
Action, to export the control terminal for the target permeate for meeting target goals data demand；
Wherein, the target goals data are corresponding with the index real time data, join including conductivity data and environment
Number data.
Above-mentioned technical proposal is detected the index real time data of permeate by using digital sensor, will remove electricity
Remaining environmental parameter value except leading is transmitted to control terminal together, and passes through and compare the corresponding conductivity number of each environmental parameter selection
According to being judged.Conductivity data is avoided to be influenced by other environmental parameters such as temperature and generates variation, leads to the detection of detection
Deviation is generated between value and actual value to the instruction to make mistake, improves ultrafiltration precision.
In some embodiments, the ambient parameter data includes temperature data, volume flow rate data, mass velocity number
According to one or more combinations in, soda acid degrees of data.
Above-mentioned technical proposal may influence one or more rings of conductivity data by using digital sensor acquisition
Border supplemental characteristic, and under each ambient parameter data of control terminal edit and storage corresponding conductivity data target goals data,
The conductivity data detected under difficult environmental conditions is made there are corresponding target goals data to be compared, eliminates environmental parameter
Influence to conductivity data improves the accuracy of judgement.
In some embodiments, the flow pipe includes：
It is connected to the ultrafiltration membrane packet input terminal, the intake line for inputting the sample liquid；
It is connected to the ultrafiltration membrane packet output terminal, the output pipe for exporting the permeate；
Connect the return line that the output pipe is back to intake line with the intake line, for nonstandard permeate.
In above-mentioned technical proposal by using return line make nonstandard permeate be back to intake line again with sample liquid
Mixing carries out ultrafiltration, improves utilization rate, reduces cost.
In some embodiments, the return line is equipped with return pressure sensor and the digitized sensor
Device.
By using above-mentioned technical proposal, by setting digital sensor on return line, it enters return line
Nonstandard permeate is detected again, confirms its content, improves the control rate to solution in flow pipe, so as to improve control
End sends out the accuracy of instruction；In addition, the hydraulic pressure pressure in return pressure sensor detection return line is equipped on return line
Power, to feed back to control terminal, the hydraulic pressure in hydraulic pressure and intake line that control terminal detects flow pressure sensor
With reference to plot mean, to obtain the final hydraulic pressure of ultrafiltration membrane packet input terminal, so as to improve the accuracy for judging transmembrane pressure.
In some embodiments, the executive item includes：
The diaphragm pump and the input valve of the control intake line break-make being set on the intake line；
It is set to the automatic valve of each ultrafiltration membrane packet both sides；
It is set on the output pipe, controls the output valve of the target permeate output；And
The return valve and flow control valve being set on the return line.
In above-mentioned technical proposal, by setting flow control valve in reflux management, to facilitate liquid in control flow pipe
The flow of body then controls the hydraulic pressure in flow pipe.
In some embodiments, the control terminal includes an at least personal computer and at least one is calculated using storehouse
Method carries out the programmable logic controller (PLC) of data storage；
The programmable logic controller (PLC) is equipped with to store conductivity data and at least one institute in the target goals data
State the database of the target association relationship and the corresponding transmembrane pressure achievement data of each target permeate between ambient parameter data；
Executive item described in the PLC controls acts；
The personal computer and programmable logic controller (PLC) communication, realize that data synchronize.
In above-mentioned technical proposal, programmable logic controller (PLC) uses stack algorithm into line number since amount of storage is smaller
According to storage, the repetition covering of data is realized, if that is, nearest data, which there are new data to arrive, will cover the old data of replacement；Separately
Outside, it communicates between personal computer and programmable logic controller (PLC), realizes personal computer to programmable logic controller (PLC)
Control, while data synchronization is realized, personal computer uses hard-disc storage, and data storage capacity is larger, so as to effectively prevent letter
Breath is lost.
In some embodiments, the control terminal and the digital sensor, input pressure sensor, output pressure
Sensor and return pressure sensor carry out the mutual inspection of working condition by the interaction of handshake.
By using above-mentioned technical proposal, when control terminal starts every time to digital sensor, input pressure sensor,
One signal of pressure sensor output and return pressure sensor, digital sensor, input pressure sensor, output pressure pass
Sensor and return pressure sensor feed back a signal to control terminal again, and the signal of feedback is compared judgement in control terminal, and
Send out the instruction information that refusal is used, alerts or normally enabled.
In some embodiments, friendship that the personal computer and the programmable logic controller (PLC) pass through heartbeat signal
Mutually carry out the mutual inspection of working condition.
By using above-mentioned technical proposal, the phase of the respective working condition of personal computer and programmable logic controller (PLC) is realized
Mutually detection leads to the omission of information and influences ultrafiltration result so as to prevent a side from delaying machine.
In some embodiments, be also stored in the database digital sensor, input pressure sensor,
The id information and calibration data of pressure sensor output and return pressure sensor；It is super that digitlization is also stored in the database
The normal operating parameters of each component and/or working life information in filter system.
By using above-mentioned technical proposal, programmable logic controller (PLC) is by establishing each digital sensor, input pressure
The database of sensor, pressure sensor output and return pressure sensor, each digital sensor, input pressure sensing
Device, pressure sensor output and return pressure sensor are respectively provided with the values of information such as fixed model, replace digital sensor,
When input pressure sensor, pressure sensor output and return pressure sensor or system reboot, by each digitized sensor
Device, input pressure sensor, pressure sensor output and the id information of return pressure sensor and programmable logic controller (PLC) number
It is compared according to the information in library, detection digital sensor, input pressure sensor, pressure sensor output and return pressure
Whether sensor is legal with effective, and sends out the instruction information that refusal is used, alerts or normally enabled；Additionally by above-mentioned technology
Scheme realizes the online school of digital sensor, input pressure sensor, pressure sensor output and return pressure sensor
Standard, without by digital sensor, input pressure sensor, pressure sensor output and return pressure sensor disassemble into
Row calibration, saves the time, reduces cost of labor；In addition, by using above-mentioned technical proposal, realize to each component working state
Anticipation function, staff is reminded to replace or repair in advance, failure is prevented, improves working efficiency.
Second scheme of the present invention provides a kind of digitlization hyperfiltration process based on above-mentioned digitlization ultrafiltration system, packet
It includes：
S1：The control terminal selects corresponding transmembrane pressure achievement data according to the requirement of required target permeate, and described in adjusting
The aperture of flow control valve and the flow of diaphragm pump；
S2：The digital sensor is detected, and feed back to the control index real time data of the permeate
End processed；
S3：Conductivity data is joined at least one environment in the index real time data of the control terminal acquisition permeate
Real time correlation relationship between number data, and the target association relationship between the corresponding index target data stored with it compares, and sentences
It is disconnected whether to match；And each executive item action is controlled, until the index real time data of the permeate meets the mark
Permeate the target goals data after export the target permeate.
By using above-mentioned technical proposal, control terminal selects corresponding transmembrane pressure to refer to according to the requirement of required target permeate
Data are marked, and adjust the aperture of flow control valve and the flow of diaphragm pump, make input pressure sensor, return pressure sensor two
The hydraulic pressure average value that person detects subtracts the difference for the hydrostatic sensor that pressure sensor output detects and transmembrane pressure refers to
It is identical to mark data, so as to filter out satisfactory permeate；In addition, permeate is detected by digital sensor, and
Feed back to control terminal and judge whether qualification, under the premise of qualification just from outgoing management export, otherwise into return line with
Sample liquid mixing carries out ultrafiltration again, to increase operation rate, reduces cost；Secondly, liquid will transmit through except electricity using digital sensor
Remaining environmental parameter value except leading is transmitted to control terminal together, and passes through and compare the corresponding conductivity number of each environmental parameter selection
According to being judged, avoiding conductivity data is influenced by other environmental parameters such as temperature and generates variation, leads to the inspection of detection
Deviation is generated between measured value and actual value and to the instruction that makes mistake, so as to improve the accuracy of ultrafiltration.
In conclusion the invention has the advantages that：
First, traditional analog sensor is replaced using digital sensor, by remaining environmental parameter value in addition to conductance together
Control terminal is transmitted to, and passes through to compare each environmental parameter and choose corresponding conductivity data and be judged, improves control terminal hair
Go out the accuracy of instruction, so as to improve ultrafiltration accuracy.
2nd, it is sensed in control terminal and digital sensor, input pressure sensor, pressure sensor output and return pressure
The mutual inspection of working condition is carried out by the interaction of handshake between device, improves the stability of system.
3rd, working condition is carried out by interacting for heartbeat signal with the programmable logic controller (PLC) in personal computer
It mutually checks, information is effectively prevent to lose.
4th, database is established in programmable logic controller (PLC), to digital sensor, input pressure sensor, output
Pressure sensor and return pressure sensor carry out ID identifications, improve the safety of system, while realize on-line testing
Purpose improves work efficiency.
5th, programmable logic controller (PLC) memory storage digitize ultrafiltration system in each component normal operating parameters and/or
Working life information realizes the anticipation of system.
Description of the drawings
Fig. 1 is the structure diagram of digitlization ultrafiltration system that the embodiment of the present invention discloses；
Fig. 2 is the module diagram of digitlization ultrafiltration system that the embodiment of the present invention discloses；
The module diagram of programmable logic controller (PLC) in the digitlization ultrafiltration system that Fig. 3 positions embodiment of the present invention discloses.
Reference numeral：
11st, intake line；12nd, return line；13rd, output pipe；21st, digital sensor；22nd, executive item；222nd, transfer valve
Door；223rd, output valve；120th, return valve；121st, flow control valve；5th, diaphragm pump；6th, ultrafiltration membrane packet；61st, automatic valve；241、
Input pressure sensor；242nd, pressure sensor output；243rd, return pressure sensor；23rd, control terminal；231st, individual calculus
Machine；232nd, programmable logic controller (PLC)；2321st, logic control element；2322nd, database；2323rd, alarm unit；3rd, redundant network
Network interchanger；4th, remote server.
Specific embodiment
Below in conjunction with attached drawing, the technical solution of the embodiment of the present invention is described.
As shown in Figure 1, the present invention discloses a kind of digitlization ultrafiltration system, specifically include：
Flow pipe, including：For the intake line 11 for sample liquid input, the output pipe 13 for permeate output and connection
The return line 12 of output pipe 13 and intake line 11；Wherein, it is communicated between above-mentioned intake line 11 and output pipe 13
Multiple ultrafiltration membrane packets 6 as shown in Figure 1, in this embodiment of the invention, are said for being provided with 3 ultrafiltration membrane packets 6
It is bright, and each ultrafiltration membrane packet 6 is connected in parallel；Sample liquid is inputted, and after 6 ultrafiltration of ultrafiltration membrane packet from above-mentioned intake line 11, from output
Pipeline 13 exports the target permeate for meeting each target goals data demand, and target goals number is not met from the output of return line 12
According to desired nonstandard permeate；
Control subsystem, including：Be set on output pipe 13 for being detected to the index real time data of permeate and
It is set to the digital sensor 21 for being detected to the index real time data of nonstandard permeate on return line 12；If
It is placed on flow pipe for the input pressure sensor 241 of 6 input terminal of detection ultrafiltration membrane packet and output terminal hydraulic pressure respectively
And pressure sensor output 242；The return pressure sensor 243 being set on return line 12；It is set on flow pipe, with
Each digital sensor 21, input pressure sensor 241, pressure sensor output 242 and return pressure sensor 243 are corresponding
For controlling the executive item 22 of the circulation status of flow pipe；It is and real-time according to the index of the detection gained of digital sensor 21
Data and input pressure sensor 241, the pressure sensor output 242 and detection gained number pressure of return pressure sensor 243
It is acted according to control executive item 22, the control of the target permeate of target goals data demand is met to output-index real time data
End 23.
As shown in Figure 1, in this embodiment of the invention, two groups of digital sensors 21 are located at 13 He of output pipe respectively
On return line 12, digital sensor 21 is used to examine the index real time data of permeate on output pipe 13
It surveys, the digital sensor 21 on return line 12 is used to examine the index real time data of nonstandard permeate again
It surveys, is detected by the index real time data to nonstandard permeate, to improve the accuracy judged, so as to improve control
Accuracy rate.
As shown in Figure 1, executive item 22 includes：The diaphragm pump 5 and control intake line 11 being set on intake line 11
The input valve 222 of break-make；It is set to the automatic valve 61 of each 6 both sides of ultrafiltration membrane packet；It is set on output pipe 13, controls target
The output valve 223 of permeate output；And it is set to return valve 120 and flow control valve 121 on return line 12.
As shown in Fig. 2, control terminal 23 and two groups of digital sensors 21, input pressure sensor 241, output pressure sense
Device 242 and return pressure sensor 243 and executive item 22 connect, as shown in figure 3, control terminal 23 includes：At least one personal meter
Calculation machine 231 and an at least programmable logic controller (PLC) 232 corresponding with personal computer 231, it is each digital sensor 21, defeated
Enter pressure sensor 241, pressure sensor output 242 and return pressure sensor 243 respectively with that personal computer 231 and can compile
Journey logic controller 232 connects, and each executive item 22 is connect with programmable logic controller (PLC) 232.As shown in Fig. 2, the present invention this
In embodiment, it is illustrated for including two personal computers 231 and two programmable logic controller (PLC)s 232, certainly,
It is only necessary to emphasize that personal computer 231 and programmable logic controller (PLC) 232 are one-to-one, but particular number is according to reality
Depending on scale, do not limit.Database 2322 is equipped in programmable logic controller (PLC) 232, personal computer 231 has visualization
Operation interface communicates to connect between personal computer 231 and programmable logic controller (PLC) 232, makes operating personnel that can pass through individual
Computer 231 carries out programmable logic controller (PLC) 232 control operation, meanwhile, it realizes personal computer 231 and may be programmed and patrol
Data synchronization is carried out between volume controller 232, still, in this embodiment of the invention, the number of programmable logic controller (PLC) 232
According to library 2322, its storage data quantity is smaller, therefore uses stack algorithm interim storage data, and personal computer 231 uses hard disk
Storage, storage data quantity is larger, and programmable logic controller (PLC) 232 is synchronized to personal computer after receiving new presupposed information
231 are stored, and to prevent loss of data, while its own realizes the repetition covering of data, if that is, nearest data have newly
Data arrive to cover and replace old data, to realize the iteration of data.
In this of the invention embodiment, the presupposed information packet that is stored in 232 database 2322 of programmable logic controller (PLC)
The target goals data of above-mentioned target permeate are included, wherein, the target goals data of target permeate respectively include conductivity number
According to this and ambient parameter data, and ambient parameter data includes temperature data, volume flow rate data, mass velocity data, acid
One or more combinations in basicity data, in addition to storing above-mentioned target in 232 database 2322 of programmable logic controller (PLC)
Outside the respective target goals data of permeate, it is also stored with conductivity data and at least one ring in each target goals data
Corresponding conductivity data under target association relationship between the supplemental characteristic of border, i.e. varying environment supplemental characteristic, such as：Target liquid is in temperature
Spend be 4 for 25 DEG C, pH value under conditions of, the desired value of conductivity data is 80-150mS, certainly, ambient parameter data not office
It is limited to acid-base value temperature data data.Except conductivity data and at least one in above-mentioned each target goals data and target goals data
Outside target association relationship between the kind ambient parameter data, also it is stored in 232 database 2322 of programmable logic controller (PLC)
The corresponding transmembrane pressure achievement data of each target permeate has passed through the corresponding transmembrane pressure achievement data control stream of each target permeate
The opening degree of control valve 121, so as to achieve the purpose that control hydraulic pressure, in addition to this, programmable logic controller (PLC) 232
Each digital sensor 21, input pressure sensor 241, pressure sensor output 242 are also stored in database 2322 and is returned
The normal operating parameters of each component in the id information and calibration data of flow pressure sensor 243 and this digitlization ultrafiltration system
And/or working life information.Certainly, the presupposed information stored in above-mentioned 232 database 2322 of programmable logic controller (PLC) is same
Step to personal computer 231 makes a backup store.
As shown in figure 3, programmable logic controller (PLC) 232 further includes logic control element 2321 and alarm unit 2323, number
Logic control element 2321 is all connected to according to library 2322 and alarm unit 2323.
As shown in figure 3, each digital sensor 21 counts the index of the permeate detected or nonstandard permeate in real time
According to feeding back to programmable logic controller (PLC) 232, logic control element 2321 according to the feedack of each digital sensor 21,
Corresponding conductivity data being chosen in the ambient parameter data of corresponding target goals data from database 2322 and being sent to patrol
It collects control unit 2321 and judgement is compared, and pass through judging result and each executive item 22 is controlled to act.
As shown in figure 3, each digital sensor 21, be respectively provided with fixed model, rated load, allow using load,
The id informations such as limit load, sensitivity, equally, input pressure sensor 241, pressure sensor output 242 and return pressure pass
Sensor 243 also has fixed id information, and programmable logic controller (PLC) 232 is passed by storing each digitlization in database 2322
Sensor 21, input pressure sensor 241, pressure sensor output 242 and return pressure sensor 243 each id information, more
It changes digital sensor 21, input pressure sensor 241, pressure sensor output 242 or return pressure sensor 243 or is
When system is restarted, digital sensor 21, input pressure sensor 241, pressure sensor output 242 or return pressure sensor
243 send id informations to programmable logic controller (PLC) 232, and logic control element 2321 is by each digital sensor in system
21st, input pressure sensor 241, the id information of pressure sensor output 242 or return pressure sensor 243 and database 2322
The reference id information of middle storage is compared, detection digital sensor 21, input pressure sensor 241, output pressure sensing
Whether device 242 or return pressure sensor 243 are legal or effective, if detecting the digital sensor 21 in system, input pressure
It is stored in the id information of force snesor 241, pressure sensor output 242 or return pressure sensor 243 and database 2322
It is not inconsistent with reference to id information, then alarm unit 2323 is controlled to carry out local warning, realizes and identity is carried out to digital sensor 21
Identification.
In addition, as shown in figure 3, establish each digital sensor in the database 2322 of programmable logic controller (PLC) 232
21st, the calibration data of input pressure sensor 241, pressure sensor output 242 and return pressure sensor 243, according to data
Digital sensor 21, input pressure sensor 241, pressure sensor output 242 and return pressure sensor 243 in library 2322
Calibration data to the digital sensor 21, input pressure sensor 241, pressure sensor output 242 of each position in system
And return pressure sensor 243 carries out parameter regulation to be calibrated, and realizes digital sensor 21, input pressure sensor
241st, the on-line calibration of pressure sensor output 242 and return pressure sensor 243, without by digital sensor 21, input
Pressure sensor 241, pressure sensor output 242 and return pressure sensor 243 are disassembled and are calibrated, and save the time,
Reduce cost of labor.
Secondly, as shown in figure 3, being stored with digitlization ultrafiltration system in the database 2322 of programmable logic controller (PLC) 232
In the normal operating parameters of each component and/or working life information, can be according to the normal operating parameters of each component and/or work longevity
Life information judges whether it needs replacing or repair, if so, control alarm unit 2323 carries out local warning, realizes to each
The anticipation function of component working state reminds staff to replace or repair, prevents failure, improves working efficiency in advance.
As shown in Figures 2 and 3, in order to improve the stability of system, in this embodiment of the invention, control terminal 23 and number
By holding between word sensor 21, input pressure sensor 241, pressure sensor output 242 and return pressure sensor 243
The interaction of hand signal carries out the mutual inspection of working condition, when control terminal 23 starts every time to digital sensor 21, input
243 1 pressure sensor 241, pressure sensor output 242 and return pressure sensor signals, it is digital sensor 21, defeated
Enter pressure sensor 241, pressure sensor output 242 and return pressure sensor 243 and feed back a signal again to control terminal 23,
The feedback signal includes each digital sensor 21, input pressure sensor 241, pressure sensor output 242 and return pressure
Judgement is compared with the correspondence id information in database 2322 to the signal of feedback in the id information of sensor 243, control terminal 23,
Exist in digital sensor 21, input pressure sensor 241, pressure sensor output 242 or return pressure sensor 243 and ask
During topic or occur when certain symptom needs to handle but temporarily do not interfere with normal operation and digital sensor 21, input pressure
When the variation of force snesor 241, pressure sensor output 242 or return pressure sensor 243 is in error range, makes and refusing
The instruction information for using absolutely, alerting or normally enabling.
As shown in Fig. 2, information is lost in order to prevent, in this embodiment of the invention, personal computer 231 is with may be programmed
Logic controller 232 carries out the mutual inspection of working condition by the interaction of heartbeat signal.I.e. every a specific time, may be programmed
Logic controller 232 sends a data packet to computer 231, and personal computer 231 returns after receiving within the specific time
A multiple information passes through 232 transmission data packet of programmable logic controller (PLC) and personal computer to programmable logic controller (PLC) 232
The situation of 231 return informations judges whether bipartite communication link is already off, if programmable logic controller (PLC) 232 and a
When people's computer 231 mutually be can not receive in preset time to square signal, then personal computer 231 or programmable logic control are judged
Device 232 processed is delayed machine.In the case where personal computer 231 or programmable logic controller (PLC) 232 a wherein side delay machine, the opposing party's control
System processed is out of service, and personal computer 231 or programmable logic controller (PLC) 232 in machine state of delaying is waited for restart；Or it is
System continues to run with, but data are directly stored in the personal computer 231 of normal work or programmable logic controller (PLC) 232, machine to be delayed
After Fang Chongqi, then send data to the machine side that delays.Wherein, judge whether are personal computer 231 or programmable logic controller (PLC) 232
Normal preset time is not more than 1 minute.
As shown in Fig. 2, the digitlization ultrafiltration system of present disclosure further includes an at least redundant network interchanger 3, often
Platform redundant network interchanger 3 corresponds to one group of personal computer 231 and programmable logic controller (PLC) 232, the individual calculus in every group
Machine 231 and programmable logic controller (PLC) 232 communicate respectively with corresponding redundant network interchanger 3, in addition, being provided with more than one
In the case of platform redundant network interchanger 3, each 3 intercommunication of redundant network interchanger, and respectively with a remote server 4
Communication.By the setting of redundant network interchanger 3 and remote server 4, the redundancy of local work station and remote work station is realized
Control realizes the effect of remote parameter modification, remote online calibration and remote failure warning.In addition, remote server 4
It also is able to realize the high in the clouds storage of information, the information of component each in each workstation system is collected respectively and is stored in high in the clouds, simultaneously
Also the data information of each supplier can be collected and is stored in high in the clouds, each supplier and factory are called and realized convenient for the later stage
Information sharing.
Invention further discloses the digitlization hyperfiltration process based on above-mentioned digitlization ultrafiltration system, include the following steps：
S0：Sample liquid is inputted from the inlet of intake line 11；
S1：Control terminal 23 selects corresponding transmembrane pressure achievement data to adjust flow control valve according to the requirement of required target permeate
121 aperture and the flow of diaphragm pump 5 make what the detection of both input pressure sensor 241, return pressure sensors 243 obtained
Hydraulic pressure average value subtracts pressure sensor output 242 and detects the obtained difference of hydrostatic sensor and transmembrane pressure achievement data phase
Together；
S11：Sample liquid is pumped by ultrafiltration membrane packet 6 by diaphragm pump 5；
S2：The index real time data of permeate of the digital sensor 21 to being exported from ultrafiltration membrane packet 6 is detected, and feed back to
Control terminal 23；
S3：In the index real time data of the acquisition permeate of control terminal 23 between conductivity data and at least one ambient parameter data
Real time correlation relationship, and the target association relationship between the corresponding index target data stored with it compares, and judges whether to match：
If so, for target permeate, that is, the action of output valve 223 in executive item 22 is controlled to export target permeate；
If it is not, then for nonstandard permeate, that is, control the action of return valve 120 make nonstandard permeate enter return line 12 with
Ultrafiltration membrane packet 6 is again introduced into after sample liquid mixing, until the index real time data of permeate meets the target goals of target permeate
Target permeate is exported after data.
In conclusion the digitlization ultrafiltration system and method for present disclosure are penetrated by control terminal 23 according to required target
The requirement of liquid selects corresponding transmembrane pressure achievement data to adjust the aperture of flow control valve 121 and the flow of diaphragm pump 5, makes input
The hydraulic pressure average value that the detection of both pressure sensor 241, return pressure sensors 243 obtains subtracts pressure sensor output 242
It is identical with transmembrane pressure achievement data to detect the obtained difference of hydrostatic sensor, so as to filter out satisfactory permeate；Meanwhile
Traditional analog sensor is replaced using digital sensor 21, remaining environmental parameter value in addition to conductance is transmitted to together
Control terminal, and pass through to compare each environmental parameter and choose corresponding conductivity data and be judged, it improves control terminal and sends out instruction
Accuracy, so as to improve ultrafiltration accuracy.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than the protection domain of invention is limited.To the greatest extent
Pipe is described in detail the present invention with reference to above-described embodiment, and those of ordinary skill in the art can not still make creation
Property labour modify to the technical solution recorded in above-described embodiment, so as to obtain it is different, essence without departing from the present invention
The other technologies scheme of design, these technical solutions similarly belong to invention which is intended to be protected.
Claims (10)
1. digitize ultrafiltration system, which is characterized in that including：
For sample liquid to be supplied to input the runner pipe that simultaneously output-index real time data meets the target permeate of target goals data demand
Road, at least one ultrafiltration membrane packet for being connected on the flow pipe and being arranged in parallel（6）An and control subsystem；
The control subsystem includes：
It is set on the flow pipe to detect multigroup digital sensor of the index real time data of permeate（21）；
It is set on the flow pipe to detect ultrafiltration membrane packet respectively（6）The input pressure of input terminal and output terminal hydraulic pressure
Force snesor（241）And pressure sensor output（242）；
It is set on the flow pipe, the executive item for controlling each node circulation status of the flow pipe（22）；And
With each digital sensor（21）, input pressure sensor（241）And pressure sensor output（242）Connection, and
Control the executive item（22）Action, to export the control terminal for the target permeate for meeting target goals data demand（23）；
Wherein, the target goals data are corresponding with the index real time data, join including conductivity data and environment
Number data.
2. digitlization ultrafiltration system as described in claim 1, which is characterized in that the ambient parameter data includes temperature number
According to, one or more combinations in volume flow rate data, mass velocity data, soda acid degrees of data.
3. digitlization ultrafiltration system as described in claim 1, which is characterized in that the flow pipe includes：
It is connected to the ultrafiltration membrane packet（6）Input terminal, the intake line for inputting the sample liquid（11）；
It is connected to the ultrafiltration membrane packet（6）Output terminal, the output pipe for exporting the permeate（13）；
Connect the output pipe（13）With the intake line（11）, for nonstandard permeate be back to intake line（11）
Return line（12）.
4. digitlization ultrafiltration system according to claim 3, which is characterized in that the return line（12）It is equipped with reflux
Pressure sensor（243）And the digital sensor（21）.
5. digitlization ultrafiltration system as claimed in claim 4, which is characterized in that the executive item（22）Including：
It is set to the intake line（11）On diaphragm pump（5）And the control intake line（11）The input valve of break-make
（222）；
It is set to each ultrafiltration membrane packet（6）The automatic valve of both sides（61）；
It is set to the output pipe（13）Output valve that is upper, controlling the target permeate output（223）；And
It is set to the return line（12）On return valve（120）And flow control valve（121）.
6. digitlization ultrafiltration system as claimed in claim 5, which is characterized in that the control terminal（23）Including at least one
People's computer（231）And at least one programmable logic controller (PLC) that data storage is carried out using stack algorithm（232）；
The programmable logic controller (PLC)（232）Equipped with for storing conductivity data and at least one in the target goals data
The data of target association relationship and the corresponding transmembrane pressure achievement data of each target permeate between the kind ambient parameter data
Library（2322）；
The programmable logic controller (PLC)（232）Control the executive item（22）Action；
The personal computer（231）And the programmable logic controller (PLC)（232）Communication realizes that data synchronize.
7. digitlization ultrafiltration system as claimed in claim 6, which is characterized in that the control terminal（23）It is passed with the digitlization
Sensor（21）, input pressure sensor（241）, pressure sensor output（242）And return pressure sensor（243）By shaking hands
The interaction of signal carries out the mutual inspection of working condition.
8. digitlization ultrafiltration system as claimed in claim 6, which is characterized in that the personal computer（231）With it is described can
Programmed logic controller（232）The mutual inspection of working condition is carried out by the interaction of heartbeat signal.
9. digitlization ultrafiltration system as claimed in claim 6, which is characterized in that the database（2322）In also store
State digital sensor（21）, input pressure sensor（241）, pressure sensor output（242）And return pressure sensor
（243）Id information and calibration data；The database（2322）In be also stored with digitlization ultrafiltration system in each component just
Normal running parameter and/or working life information.
10. digitize hyperfiltration process, which is characterized in that based on digitlization ultrafiltration system as claimed in claim 6, method packet
It includes：
S1：The control terminal（23）Corresponding transmembrane pressure achievement data is selected, and adjust according to the requirement of required target permeate
The flow control valve（121）Aperture and diaphragm pump（5）Flow；
S2：The digital sensor（21）The index real time data of the permeate is detected, and feed back to institute
State control terminal（23）；
S3：The control terminal（23）Acquire conductivity data and at least one ring in the index real time data of the permeate
Real time correlation relationship between the supplemental characteristic of border, and the target association relationship between the corresponding index target data that it is stored is opposite
Than judging whether to match；And control each executive item（22）Action, until the index real time data of the permeate accords with
The target permeate is exported after closing the target goals data of the target permeate.
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