CN103676864B - A kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device - Google Patents
A kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device Download PDFInfo
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- CN103676864B CN103676864B CN201310647246.3A CN201310647246A CN103676864B CN 103676864 B CN103676864 B CN 103676864B CN 201310647246 A CN201310647246 A CN 201310647246A CN 103676864 B CN103676864 B CN 103676864B
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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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- 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]
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Abstract
A kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device, including association's processing unit, ultrafiltration intelligent control unit, counter-infiltration intelligent control unit, dosing intelligent control unit and some auxiliary units；Association's processing unit, it is each ultrafiltration intelligent control unit of Coordination Treatment, counter-infiltration intelligent control unit, the synthetic operation of dosing intelligent control unit and distribute to the inflow that control water of each control unit etc. is fed back according to ultrafiltration intelligent control unit, each water quality data and the influence coefficient that water is produced to ultrafiltration, this demand is simultaneously sent to the control that dosing intelligent control unit carries out chemical feeding quantity by COMPREHENSIVE CALCULATING dosing demand amount, when for example turbidity has considerable influence to individual parameters to chemical feeding quantity, it is turbidity that water quality impact parameter, which then may be selected, influence coefficient is used as adjusting parameter, the dosing demand amount calculated by the method is handed down to Adding medicine control module, so as to further control the chemical feeding quantity of whole system.
Description
Technical field
The present invention relates to a kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device, more particularly to seawater desalination and ultrafiltration
The diagnosis of reverse osmosis unit runnability and assessment and the function such as related Control System and the fast quick-recovery of each unit.
Background technology
In recent years due to the application of the technologies such as energy regenerating, VFC so that seawater desalination and ultrafiltration counter-infiltration engineering energy
Consumption is greatly reduced and obtains application step by step.But because Seawater Desalination Project is typically controlled using PLC or DCS, its
Very big also extremely complex thus also very high to the competency profiling of control system attendant, the current seawater of maintenance workload
Desalting engineering is only merely to be applied in the power industry that there is plant maintenance resource in coastal enterprise, and departing from electric power enterprise
The Seawater Desalination Project individually set up is not used widely.
With the high speed development of society and sharply increasing for population, shortage of fresh water problem has caused countries in the world
Most attention.China is water resource big country, while being also one of country of water shortage the most.China's gross amount of water resources is 2.8 trillion
Cubic meter, occupies the 6th, the world, and freshwater resources amount is only 2125 cubic metres per capita, is a quarter of world occupancy volume per person,
One of 13 Ge Pin lands that abounds in rivers and lakes are classified as by the United Nations.China's Coastal Areas is economically developed, densely populated, but freshwater resources amount only has per capita
1266 cubic metres, in serious water shortage state.Therefore, China is very urgent and huge to the demand of Seawater Desalination Project.
Using a kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device, it can reduce to control system attendant
Competency profiling so that individually ultra filtering reverse osmosis Seawater Desalination Project obtains large scale application, and be effectively reduced
The operation cost of equipment.
There is problems with the control system for being currently used for seawater desalination and ultrafiltration counter-infiltration：
Existing PLC and DCS control systems just participate in the technical staff of the project implementation originally at last in System Expansion,
Longer program is also required for because engineering time is longer and is familiar with the cycle, the transformation progress influence on project is very big.
Existing PLC and DCS control systems need to be both needed to weight in System Expansion to hardware configuration, logical program of system etc.
New lower dress, the operation to system has a significant impact.
Existing PLC and DCS control systems, the preservation means of data are single, by upper computer software limitation also very
Greatly, specific data can not be preserved immediately, such as diagnostic data.
The operational factor of existing PLC and DCS control systems is based on manual entry, without parameter management function, in system
Need to re-calibrate operational factor after recovery.If tune-up data and later stage combustion adjustment data preserve imperfect,
Certain hidden danger can be brought to the operation of system.
Existing PLC and DCS control systems, primarily directed in the operation of equipment, the diagnosis for equipment is no timely
Processing, only can just give alert process and replacing in equipment fault.
Existing PLC and DCS control systems, mainly in control room centralized Control, scene can only on the spot set single
It is standby to be switched on the spot, the debugging of single valve and equipment is carried out, this can not effectively carry out artificial when system occurs abnormal
Intervene and on-site supervision.Existing PLC and DCS control systems, it is impossible to effectively to some before and after device damage or when stopping
Process conditions parameter is recorded.
The content of the invention
Therefore, the present invention seeks to, a kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device is proposed, can be effectively
Solve existing PLC and DCS control systems, a series of problems brought by defects such as personnel, technology, management.
The object of the invention is also resided in：Water is handled and during change of water quality, the problem of the calculating and control of system chemical feeding quantity.Tool
There are the monitoring inlet and outlet pressure of pump and exerting oneself for pump, when being sent when exerting oneself and not reaching desired indicator for pump is alarmed and be switched to other
Stand-by pump.The information such as inlet and outlet pressure and flow by pump carry out checksum protection to water pump in time.Solve multiple row ultrafiltration, it is anti-
Flow imbalance problem when osmosis system is run, prevents huge bias current operation conditions.When people has found on the spot at the scene
When exception or failure occurs in the operation of seawater desalination and ultrafiltration reverse osmosis unit, intelligence control system can done on the spot immediately
In advance.
The object of the invention is also resided in：Control unit is the problem of fast quick-recovery after being damaged caused by extraneous factor.Comprehensive Control
The control coordination problem of ultrafiltration, the operation of counter-infiltration, flushing, the time of backwash, water etc..Because the pressure oscillation of chemical feeding points is led
Cause the problem of dosing is uneven.Because user is unfamiliar with to system operation, the factor such as adjusting parameter is unreasonable causes ultrafiltration, anti-
Infiltration water element quick aging processed, it is to avoid the generation for situations such as membrane component is aoxidized.Because user management is not good at, system operation is caused
Parameter is lost, and causes the generation for situations such as system maintenance in future is difficult.
The technical scheme is that：A kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device, including association's processing
Unit, ultrafiltration intelligent control unit, counter-infiltration intelligent control unit, dosing intelligent control unit and some auxiliary units；
Association's processing unit, is each ultrafiltration intelligent control unit of Coordination Treatment, counter-infiltration intelligent control unit, dosing
Intelligent control unit synthetic operation and distribute to control water of each control unit etc.；Fed back according to ultrafiltration intelligent control unit
Inflow, each water quality data and to ultrafiltration produce water influence coefficient, COMPREHENSIVE CALCULATING dosing demand amount simultaneously this demand pass
Give the control that dosing intelligent control unit carries out chemical feeding quantity；
According to need to water inventory processed and each ultrafiltration and counter-infiltration running status and water number evidence processed, to each ultrafiltration and counter-infiltration
The dosing demand amount calculated by the method that is controlled be handed down to Adding medicine control module, so as to further control whole
The chemical feeding quantity of system；
According to need to water inventory processed and each ultrafiltration and counter-infiltration running status and water number evidence processed, to each ultrafiltration and counter-infiltration
Be controlled, so as to balance due to total water production that equipment reason itself is unable to reach；
The function of running status with detection pump；The pump that the information references such as inlet and outlet pressure and flow by pump are imported
Characteristic curve, when running status and the characteristic curve of pump, which deviate, exceedes certain limit carrying out warning reminding user carries out water pump
Checked, in order to avoid causing further to damage influence system operation to pump, and be switched to other stand-by pumps.
Ultrafiltration intelligent control unit, live configuration can be carried out in debugging and operation, i.e., adjustment operation walks sequence at the scene
And time parameter；When ultrafiltration intelligent control unit is run, user or operator can intervene at the scene, control leapfrog or pause.Together
When control unit can detect intervene before all valve or meter status and run time, inquiry operator is from last action link
Need to modify to partial parameters into this link, parameter modification is carried out after confirming by user.Ultrafiltration intelligent control unit
The running status of ultrafiltration apparatus is monitored, it is when such as ultrafiltration water production does not reach the data that association's processing unit is passed down, then single to association's processing
Member sends alarm, and the water production that the ultrafiltration fails to complete is handed down to other ultrafiltration intelligent control singles by association's processing unit according to alarm
It is first to be handled.
Ultrafiltration intelligent control unit service data is backed up and down-transmitting data；User can grasp on ultrafiltration intelligent control unit
Making operational factor be uploaded to assists processing unit to be preserved, when because misoperation sends data entanglement or the ultrafiltration more renewed
During intelligent control unit, service data can be passed in the case where confirming behind the address of ultrafiltration intelligent control unit, make ultrafiltration apparatus quick
Into running status.
Ultrafiltration intelligent control unit runs backwash Requisition Validation function.When ultrafiltration needs backwash Shen is sent to association's processing unit
Row backwash that come in or flushing put on record, association processing unit receives detected whether after signal permission ultrafiltration carry out backwash, as can if it is straight
Connect and issue a command to ultrafiltration permission backwash；As back-washable, the ultrafiltration is ranked up, and is then issued a command to when taking turns to the hyperfiltration reverse-rinsing
The ultrafiltration carries out backwash.
Dosing intelligent control unit, the dosing demand amount that the dosing intelligent control unit is passed down according to association's processing unit, with
And the information such as stroke, the length of pipeline of typing, the caliber of detected drug concentration, pump automatically controls dosing pump running frequency.Plus
Medicine intelligent control unit detects the pressure change of chemical feeding points, solves the uniform sexual function of dosing of system.Seawater desalination and ultrafiltration reverse osmosis
Ultrafiltration intelligent control unit, counter-infiltration intelligent control unit, dosing intelligent control unit, auxiliary unit access association inside saturating device
During processing unit, detection need to be carried out and put on record and could run, it is to avoid occur address conflict.
The pressure flow performance curve of pump approximately preserves the performance curve of pump using multipoint data compression, to reduce
Space needed for the data storage of curve.By pump pressure and the parameter curve of flow, the several points of boil down to protect these points
Deposit.When parameter curve recovers, these points are linked to be curve, although and the performance curve of pump has certain difference, but prison can be met
Control is required.Pump discharge is compared in detection with the normal flow parameter of this pressure spot, when the variable quantity of flow is more than just
During normal flow parameter 10%, then water pump produces failure, and carries out the processing of failure（It can be switched over after other parameters are checked
Water pump）.
The function of running status with detection pump.The pump that the information references such as inlet and outlet pressure and flow by pump are imported
Characteristic curve, when running status and the characteristic curve of pump, which deviate, exceedes certain limit carrying out warning reminding user carries out water pump
Checked, in order to avoid causing further to damage influence system operation to pump, and be switched to other stand-by pumps.
The pressure flow performance curve of pump approximately preserves the performance curve of pump using multipoint data compression, to reduce
Space needed for the data storage of curve.
The beneficial effects of the invention are as follows, can by proposing a kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device
Efficiently solve existing PLC and DCS control systems, a series of problems brought by defects such as personnel, technology, management.
Including processing water and during change of water quality, the problem of the calculating and control of system chemical feeding quantity.Solve multiple row ultrafiltration, counter-infiltration system
Flow imbalance problem during operation, prevents huge bias current operation conditions.When people has found desalinization on the spot at the scene
When exception or failure occurs in ultrafiltration reverse osmosis device operation, intelligence control system can intervened on the spot immediately.Monitor pump
Inlet and outlet pressure and pump exert oneself, when other stand-by pumps are alarmed and be switched to being sent when exerting oneself and not reaching desired indicator for pump.
Control unit is the problem of fast quick-recovery after being damaged caused by extraneous factor.In a word, especially a kind of seawater desalination and ultrafiltration of the present invention
Reverse osmosis unit comprehensive intelligent control system, the inflow that can be especially fed back according to ultrafiltration intelligent control unit, each water quality
This demand is simultaneously sent to dosing Based Intelligent Control by data and the influence coefficient that water is produced to ultrafiltration, COMPREHENSIVE CALCULATING dosing demand amount
Unit carries out the control of chemical feeding quantity；The characteristic curve for the pump that the information references such as inlet and outlet pressure and flow by pump are imported, when
The running status of pump deviates progress warning reminding user progress water pump when exceeding certain limit with characteristic curve and checked, in order to avoid
Pump is caused further to damage influence system operation, and is switched to other stand-by pumps.Most important power-pump is protected at all
Operation.
Brief description of the drawings
Fig. 1 is a kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device structure chart；
Fig. 2 is association's processing unit-man-machine interface（Main interface）；
Fig. 3 is association's processing unit-man-machine interface（Chemical feeding quantity setting, calculating）；
Fig. 4-1 is association's processing unit-man-machine interface（Pump performance measuring and evaluating）；
Fig. 4-2 is pump performance curve（A）With by a compression pump performance curve（B）；
Fig. 5 is association's processing unit-man-machine interface（Ultrafiltration configuration info）；
Fig. 6 is traditional dosing regimen and intelligent dosing scheme comparison；
Fig. 7 communication frame formats of the present invention；
The access detection of Fig. 8 units is put on record control flow.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of seawater desalination and ultrafiltration reverse osmosis unit intelligent control module by：Assist processing unit, Duo Gechao
Filter the composition such as intelligent control unit, multiple counter-infiltration intelligent control units, multiple dosing intelligent control units and auxiliary unit.
Illustrate the effect of each control unit one by one below.
Assist processing unit
Association's processing unit is chief coordinator's unit of whole intelligent control system of sea water desalination hyperfiltration reverse osmosis device.It is responsible for control
The processing of the collaborative work of all control units, storage of data etc. in molding block.
To reach function above, association's processing unit is mainly made up of following part：
1st, man-machine interface, is that site operation personnel, commissioning staff etc. handle the passage interacted with association.The man-machine boundary of the system
Face is display screen and touch panel to reach man-machine effective interaction.
2nd, control unit communication interface, the communication interface is based on RS485 hardware configurations, and system is that ultrafiltration is intelligently controlled by function
Unit processed, counter-infiltration intelligent control unit, dosing intelligent control unit and some auxiliary unit spare interfaces.Pass through address pair
Similar control unit is identified and controlled.
3rd, remote communication interface, the interface is based on EPA structure, for leading to for being reserved to the operating desk of control room
Communication interface, the state of each control unit can be monitored by the Interface User, can also upload all operational factors
Backup is downloaded.
4th, CF card interfaces, the interface is the storage of service data, the setup parameter of association's processing unit etc., Parameter reconstruction, event
Hinder the Media Interface Connector of data.（Fault data refers to the alarm order and service data of each control unit when occurring emergency outage）
5th, in house software functional module, the part is mainly made up of Adding medicine control module, flow equilibrium module etc..
Ultrafiltration intelligent control unit, counter-infiltration intelligent control unit；Ultrafiltration intelligent control unit, counter-infiltration intelligent control single
Member is control ultrafiltration, the functional module of reverse osmosis unit operation, the valvular control of module tool and feedback signal access, water
The control of pump is carried out being handed down to auxiliary unit control water pump after flow equilibrium to be uploaded to association's processing unit by association's processing unit
Operation.Ultrafiltration intelligent control unit, counter-infiltration intelligent control unit will assist processing unit-man-machine interface to enter in follow-up reference picture 5
One step explanation.
According to need to water inventory processed and each ultrafiltration and counter-infiltration running status and water number evidence processed, to each ultrafiltration and counter-infiltration
Be controlled；Such as：Certain operating mode, coagulant and flocculant chemical feeding quantity are 0.2mg/L, such as individual parameters such as turbidity under normal circumstances
When having considerable influence to chemical feeding quantity, then it is turbidity that water quality impact parameter, which may be selected, and influence coefficient is used as adjusting parameter（Such as
1.0 be not adjust）, the dosing demand amount calculated by the method is handed down to Adding medicine control module, so as to further control
The chemical feeding quantity of whole system；
According to need to water inventory processed and each ultrafiltration and counter-infiltration running status and water number evidence processed, to each ultrafiltration and counter-infiltration
Be controlled, such as：System currently need to water inventory processed be 300 ± 20t/h, start 3 sets ultrafiltration systems progress water processed, every water processed
Measure as 100t/h, if wherein 1 set ultrafiltration water production, which does not reach water requirement processed, only has about 70t/h, 3 total water productions are
270t/h, does not reach water production lower limit 280t/h, after operation a period of time（Such as 20min）, system is by the target water of another 2
Amount is revised as 115t/h automatically, while ultrafiltration target water production not up to standard is revised as 70t/h, so as to balance due to equipment sheet
Total water production that body reason is unable to reach；
The function of running status with detection pump；The pump that the information references such as inlet and outlet pressure and flow by pump are imported
Characteristic curve, when running status and the characteristic curve of pump, which deviate, exceedes certain limit carrying out warning reminding user carries out water pump
Checked, in order to avoid causing further to damage influence system operation to pump, and be switched to other stand-by pumps, such as：Certain pump imported
Some operating pressure point on parameter curve is identical with work at present pressure（0.96MPa）, now exert oneself as 105t/h or so, go out
Power is calculated as 102~108t/h by 3% deviation range, if pump run at this pressure and its flow not within the range,
This pump of deducibility is not run normally, and it is alarmed after certain time-delay and located to be given in early days when pump breaks down
Reason.
Dosing intelligent control unit
Dosing intelligent control unit, dosing computing module built in the control unit, the dosing passed down according to association's processing unit
Demand, detection（Or typing）Drug concentration and pump the information such as momentum, calculate the output frequency of dosing pump.Add first
The drug-diluting pump feedwater flow of initial dosing is drawn according to parameters such as the length of dosing pipeline, calibers after computation during medicine, added
Chemical feeding quantity, delay time of Teat pipette etc. ensure to add the uniformity of medicine.The follow-up traditional dosing regimen of reference picture 6 and intelligent dosing
Scheme comparison is further described.
Auxiliary unit
Auxiliary unit, the control unit is mainly made up of two parts, the public data that a part gathers for periphery, for auxiliary
The monitoring data helped；Another part is the control and the active and standby selection of some pumps of some water pumps during production, pumps out power
Calculating regulation etc. control.The follow-up association of reference picture 2 processing unit-man-machine interface（Main interface）It is further described.
As shown in Fig. 2 association's processing unit-man-machine interface（Main interface）, the interface major function is association's processing unit to super
Filter unit and reverse osmosis units carry out operation monitoring and control.
（Ultrafiltration, counter-infiltration）Feed water pump control module
Feed pump water is handed down to auxiliary unit by association's processing unit, and auxiliary unit receives basis after water amount information and transported
The performance parameter curve of the operation of water-filling pump, outage data, and pump calculates pump and need to run the information of pump and send out the information
Give the control such as start and stop that motor control circuit carries out pump.
The selection of pump, the run time of auxiliary unit record pump and idle time, the operation of pump is selected, is preferentially examined during startup
Consider the pump for selecting idle time longer；The pump for selecting run time longer during termination of pumping is stopped transport.It is long between when running（Such as 48
Hour, it can be set in system）, whether auxiliary unit meeting automatic detection has stand-by pump, when then selecting to stop transport if stand-by pump
Between longer stand-by pump replace the long water pump of run time.
Control of the pump discharge to pump operation quantity and operational factor, auxiliary unit is first determined whether after traffic demand is received
The variable quantity of demand volume, such as variable quantity are smaller（Such as variable quantity is less than 10%, can be set in system）When, system is without water
The adjustment of pump operation parameter.When variable quantity is larger, then checked whether that adjustment requirement can be met according to pump's performance curre, such as
It can adjust, be adjusted by given change, can not such as adjust, then be alarmed, and warning message is uploaded to association's processing list
Member, association's processing unit carries out relevant treatment according to warning message.
Association's processing unit only handles water operation and special control is coordinated.Association's processing unit is handed down to after water is divided equally
Ultrafiltration, counter-infiltration intelligent control unit.Ultrafiltration, counter-infiltration control unit adjust ultrafiltration control valve opening according to the water of distribution
And the frequency of reverse osmosis high-pressure pump frequency conversion device, complete ultrafiltration, the control of counter-infiltration.
Hyperfiltration reverse-rinsing is controlled, and after ultrafiltration stands a period of time or operation some cycles, ultrafiltration need to carry out backwash, ultrafiltration
Backwash, which need to combine amount of medicament, backwash water, whether there is other ultrafiltration carries out that judge whether can be with backwash in various factors such as backwashes.It is super
Backwash request is sent from ultrafiltration intelligent control unit to association's processing unit when filter need to carry out backwash, association's processing unit receives backwash please
Ask and first check for whether the conditions such as amount of medicament, backwash water possess backwash condition, as do not possessed, send alarm, notify operation people
Member.Backwash can be such as carried out, then other ultrafiltration are checked whether there is in backwash, as sent anti-to ultrafiltration intelligent control unit without if
Wash instruction；If any other ultrafiltration in backwash, then the ultrafiltration apparatus is queued up, backwash is sent to the ultrafiltration when taking turns to the hyperfiltration reverse-rinsing
Instruction.
As shown in figure 3, association's processing unit-man-machine interface（Chemical feeding quantity setting, calculating）, the interface major function is association's processing
Unit completes total chemical feeding quantity and calculating, is handed down to dosing intelligent control unit, dosing intelligent control unit according to dosing demand amount,
Chemical feeding quantity is calculated with reference to drug concentration, the parameter such as performance, lift referring again to dosing pump calculates the operation of dosing variable frequency pump
Quantity and given frequency.
As shown in Fig. 4-1, processing unit-man-machine interface is assisted（Pump performance measuring and evaluating）, the interface major function is according to auxiliary
The running status of pump of unit upload, the main pipe flow of water pump calculate the flow of single pump, and whether online control meets pump
The deviation requirement of performance curve.Such as undesirable, to association's processing unit alarm, operations staff checks feed pump according to the alarm
Whether it is faulty the problems such as.The pressure flow performance curve of pump is approximately protected the performance curve of pump using multipoint data compression
Deposit, to reduce space needed for the data storage of curve.
Fig. 4-2 is pump performance curve（A）With by a compression pump performance curve（B）.
Pump pressure and the parameter curve of flow, the several points of boil down to preserve these points.When curve recovers,
These points are linked to be curve, although and the performance curve of pump has certain difference, but monitoring requirement can be met.Pump discharge is in detection
It is compared with the normal flow parameter of this pressure spot, when the variable quantity of flow is more than normal flow parameter 10%, then water
Pump produces failure, and carries out the processing of failure（Water pump can be switched over after other parameters are checked）.
As shown in figure 5, association's processing unit-man-machine interface（Ultrafiltration configuration info）, should interface one ultrafiltration is mainly provided
Configuration interface.Each information in interface is illustrated below：
Address：01-01, this information is port and the address information that ultrafiltration intelligent control unit accesses association's processing unit.
The 01 of " 01-xx " represents the ultrafiltration EBI to assist processing unit of access（02 it is counter-infiltration, 03 be dosing, 04 is auxiliary
Unit）.The 01 of " xx-01 " is the address of ultrafiltration intelligent control unit.
State：Networking, this information is the access state of ultrafiltration intelligent control unit, and the information has 3 kinds of dispaly states, respectively
For：Networking（Unit configuration and on-line operation is normal）, offline（Equipment configuration, but barrier association processing unit can not be examined for some reason
Measure the unit）, non-configuration（The unit access, association processing unit can scan the unit but, not to the unit carry out it is standby
Case, association's processing unit can not be controlled to the unit）.
Parameter below in connection with Fig. 5 is the information of ultrafiltration intelligent control unit.
Inlet regulating valve parameter, exports and is fed back to select control and the feedback signal type of regulating valve, there is 4-20mA, 0-
20mA, 0-5V, 1-5V add up to 4 kinds of aspects.The range of flow that FI1~FI5 issues for association's processing unit, correspond to different
Valve opening is to adjust flow, and different flow rate zones correspond to different adjustment factors（Or the slope of curve, the slope is according to adjusting
Flow calculated automatically by ultrafiltration intelligent control unit with aperture）, these parameters（Flow and aperture）Thrown initial stage in system
Used time is adjusted.Valve fine setting scope, when being adjusted by the aperture adjusted, not reach or more than given flow, then
It is finely adjusted by ultrafiltration intelligent control unit in fine setting scope, to reach the flow for assisting processing unit to issue.
Supporting instrument is configured, and the partial parameters are that other instrument access that ultrafiltration is run is set, and AI1~AI4 is channel number.
The corresponding 0.0-200.0 of AI1 are range.The corresponding F2 of AI1 are combination parameter, and access data type, unit comprising AI1 etc. is believed
Breath, " F " is flow（Unit：Ton）, " 2 " are outlet, and other C are conductance（Unit：us/cm）, D is differential pressure,（Unit：KPa）,N
For turbidity etc..
It is finally step sequence information, valves of the 1~V5 of matrix V for action is constituted by V1~V5, P1, P2 and A1~A16
（V1~V5 is according to different milipore filter correspondences）, P1, P2 are the water pump started（P1 is need to start feed pump, and P1 is anti-for that need to start
Wash water pump）, A1~A16 is operation order.The red step sequence to be currently being operated in matrix, needs to increase or closes in such as running
Valve or pump, need to only be clicked on when front pump green circle corresponding with valve or red black circle, after validation i.e. feasible modifications,
Sequence is walked by preserving to walk needed for sequence button is preserved.Modified as needed to the time of each step sequence, can click on modification time progress
The modification of each step time.The completion condition of step sequence can click on A1~A16 and modify or set.
As shown in fig. 6, traditional dosing regimen and intelligent dosing scheme comparison.Traditional dosing regimen will prepare for dosing pump
Medicine be directly added into ultrafiltration water inlet pipe, but the fluctuation of the pressure in ultrafiltration apparatus entrance can cause the fluctuation of actual chemical feeding quantity,
In addition the pulse characteristic of dosing pump in itself also make it that the decoction into ultrafiltration apparatus is uneven, therefore and influences producing water water quality.This
Invention draws all the way that dilution water is to dosing pump discharge from feedwater pump discharge, and medicine is dilute during longer medicine Pipe transfer
Release, while when the pump discharge pressure that feeds water changes, the pressure of dilution water also changes therewith.Thus effectively reduce the pressure of feed pump
The influence that the pulse characteristic of power change and dosing pump in itself is caused to ultrafiltration dosing.
As shown in fig. 7, communication message form of the present invention.Now make the following instructions：
Start frame：NnH, is 16 data.Any communication is when nn is 01 using this data as initial data in system
The special start bit of ultrafiltration intelligent control unit, 02 is the special start bit of counter-infiltration intelligent control unit, and 03 can control for dosing
The special start bit of unit processed, 04 is the special start bit of auxiliary unit, and the PORT COM of coprocessor receives rising for mistake
The unit can be put on record by port transmission " nn+add+54+00+CRC " during beginning frame and close and alarm, pent unit meeting
Close and alert.
Address, is the address code of control unit.This address code is unique in a port, when finding to repeat, control
Unit processed, which can be automatically terminated, to be put on record, leaves running status, and coprocessor sends alarm, and two clashed control unit can be same
When alert.
Command word, is control instruction information.01 is read status command word, and control unit is received can be finger after the command word
Fixed data feedback gives association's processing unit.02 is control command word, act as sending control instruction etc. to control unit, such as flows
Amount, chemical feeding quantity, alert data etc..Other to also have some special row status words, such as 5x is control and the state letter of some spy's row
Breath, does not elaborate here.
Check code, to send the final calculating verification of data, when being interfered in data transmission procedure, data can occur
Change, two ends use same parity algorithm, and when data change, check code checking is inconsistent, and now receiving data terminal can send
" 02+add+42+00+CRC " request of data, transmitting terminal can resend former data, and the system is verified using CRC16.
As shown in figure 8, the present invention prevents that new Access Control unit from conflicting with original control unit, entered using the mode of putting on record
Row registration, the control unit do not put on record is not involved in system operation and control.Control unit provided with putting on record hardware button, when press by
Control unit can detect the correctness of communication interface connection after button, as incorrect, alarm immediately, and disconnect communication；Such as wiring just
It is true then send request command word " 02+add+52+00+CRC " of putting on record and put on record and ask and wait processing of putting on record, association's processing unit
Querying command word " 02+add+53+00+CRC " of putting on record is sent after receiving request of putting on record, has been put on record then if any same address control unit
" 02+add+54+00+CRC " status word is fed back, status word of having put on record is not received such as, association's processing unit is delayed by 30 seconds
" 02+add+55+00+CRC " is sent afterwards, in waiting the control unit of processing of putting on record to complete to put on record after the instruction is received,
It is placed in send instructions under state of having put on record, association's processing unit and is run.
Claims (9)
1. a kind of intelligent control system of sea water desalination hyperfiltration reverse osmosis device, it is characterized in that including association's processing unit, ultrafiltration intelligence
Control unit, counter-infiltration intelligent control unit, dosing intelligent control unit and some auxiliary units；
Association's processing unit, is each ultrafiltration intelligent control unit of Coordination Treatment, counter-infiltration intelligent control unit, dosing intelligence
Control unit synthetic operation and the control water for distributing to each control unit, the water inlet fed back according to ultrafiltration intelligent control unit
Amount, each water quality data and the influence coefficient that water is produced to ultrafiltration, COMPREHENSIVE CALCULATING dosing demand amount and this demand is sent to plus
Medicine intelligent control unit carries out the control of chemical feeding quantity, when for example turbidity has considerable influence to individual parameters to chemical feeding quantity, then may be used
It is turbidity to select water quality impact parameter, and influence coefficient is as adjusting parameter, under the dosing demand amount calculated by the method
Adding medicine control module is issued, so as to further control the chemical feeding quantity of whole system；
According to need to water inventory processed and ultrafiltration and counter-infiltration running status and water number evidence processed, ultrafiltration and counter-infiltration are controlled
System；
Detect the running status of pump：By the inlet and outlet pressure and flow information of pump with reference to the characteristic curve of the pump imported, work as pump
Running status and characteristic curve deviate and carried out when exceeding certain limit warning reminding user and carry out water pump inspection, in order to avoid made to pump
Influence system operation is damaged into further, and is switched to other stand-by pumps；
The ultrafiltration intelligent control unit, live configuration can be carried out in debugging and operation, i.e., adjustment operation walks sequence at the scene
And time parameter；When ultrafiltration intelligent control unit is run, user or operator can intervene at the scene, control leapfrog or pause, together
When ultrafiltration intelligent control unit can detect and intervene all valve or meter status and run time, inquiry operator is from upper one behaviour
Make link is needed to modify to partial parameters into this link, and parameter modification is carried out after confirming by user.
2. intelligent control system of sea water desalination hyperfiltration reverse osmosis device, is controlled it is characterized in that ultrafiltration is intelligent according to claim 1
Unit processed monitors the running status of ultrafiltration apparatus, when such as ultrafiltration water production does not reach the data that association's processing unit is passed down, then to association
Processing unit sends alarm, and the water production that the ultrafiltration fails to complete is handed down to other ultrafiltration intelligence by association's processing unit according to alarm
Control unit is handled.
3. intelligent control system of sea water desalination hyperfiltration reverse osmosis device, is controlled it is characterized in that ultrafiltration is intelligent according to claim 1
Unit service data backup processed and down-transmitting data；User operates on ultrafiltration intelligent control unit and operational factor is uploaded at association
Reason unit is preserved；When because misoperation sends data entanglement or the ultrafiltration intelligent control unit more renewed, confirming
Service data is passed under behind the address of ultrafiltration intelligent control unit, ultrafiltration apparatus is rapidly entered running status.
4. intelligent control system of sea water desalination hyperfiltration reverse osmosis device, is controlled it is characterized in that ultrafiltration is intelligent according to claim 1
Unit processed runs backwash Requisition Validation function；Application progress backwash is sent to association's processing unit or rinse standby when ultrafiltration needs backwash
Case, association's processing unit, which is received, detected whether after signal permission ultrafiltration progress backwash, and the ultrafiltration is directly issued a command to if allowing and is permitted
Perhaps backwash；If then the ultrafiltration is ranked up for backwash, the ultrafiltration is then issued a command to when taking turns to the hyperfiltration reverse-rinsing and carries out backwash.
5. intelligent control system of sea water desalination hyperfiltration reverse osmosis device, is controlled it is characterized in that dosing is intelligent according to claim 1
Unit processed is according to the dosing demand amount that passes down of association's processing unit, and the stroke of detected drug concentration, pump, the pipeline of typing are long
Degree, caliber information automatically control dosing pump running frequency.
6. intelligent control system of sea water desalination hyperfiltration reverse osmosis device, is controlled it is characterized in that dosing is intelligent according to claim 1
Unit processed detects the pressure change of chemical feeding points, solves the uniform sexual function of dosing of system.
7. intelligent control system of sea water desalination hyperfiltration reverse osmosis device according to claim 1, it is characterized in that desalinization is super
Filter ultrafiltration intelligent control unit, counter-infiltration intelligent control unit, dosing intelligent control unit, auxiliary unit inside reverse osmosis unit
During access association processing unit, detection need to be carried out and put on record and could run, it is to avoid occur address conflict.
8. intelligent control system of sea water desalination hyperfiltration reverse osmosis device according to claim 1, it is characterized in that the pressure current of pump
Amount performance curve approximately preserves the performance curve of pump using multipoint data compression, with needed for reducing the data storage of curve
Space.
9. intelligent control system of sea water desalination hyperfiltration reverse osmosis device according to claim 1, it is characterized in that pump pressure with
The performance curve of flow, the several points of boil down to preserve these points；Pump discharge is normal with this pressure spot in detection
Flow parameter is compared, and when the variable quantity of flow is more than normal flow parameter 10%, then water pump produces failure.
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| CN104402091B (en) * | 2014-11-26 | 2016-05-11 | 杭州水处理技术研究开发中心有限公司 | A kind of variable load operation seawater desalination reverse osmosis device in real time |
| CN107063766A (en) * | 2017-06-06 | 2017-08-18 | 邦达诚科技（常州）有限公司 | The water acquisition water supply installation and its control method of water quality detecting station |
| CN108079791B (en) * | 2018-01-19 | 2023-09-12 | 华北电力科学研究院有限责任公司 | Reverse osmosis system with multiple sets of parallel operation and start-stop control method thereof |
| CN113181773A (en) * | 2021-04-25 | 2021-07-30 | 蒲城清洁能源化工有限责任公司 | Sequential control method for ultrafiltration water treatment |
| CN114225800B (en) * | 2021-12-10 | 2024-06-11 | 浙江金仪盛世生物工程有限公司 | Liquid preparation ultrafiltration device |
| CN114702148A (en) * | 2022-01-07 | 2022-07-05 | 成都优越科技有限公司 | Ultrapure water machine water production control system and control method thereof |
| CN115018000B (en) * | 2022-06-21 | 2024-03-05 | 西安热工研究院有限公司 | Data processing system and method for ultrafiltration device of thermal power plant |
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| CN2470347Y (en) * | 2001-03-19 | 2002-01-09 | 中国人民解放军后勤工程学院 | Sea water desalting apparatus |
| CA2539699A1 (en) * | 2004-12-21 | 2006-06-21 | Bolsaplast, S.A. | Reverse osmosis sea water desalination system |
| CN2853602Y (en) * | 2005-11-03 | 2007-01-03 | 林辉 | Ship vortex seawater desalination system |
| JP5383163B2 (en) * | 2008-11-27 | 2014-01-08 | 三菱重工業株式会社 | Multistage seawater desalination apparatus and operation control method for multistage seawater desalination apparatus |
| JP2013059743A (en) * | 2011-09-14 | 2013-04-04 | Toshiba Corp | Seawater desalination plant system |
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