CN205540314U - Electrodialysis is utmost point control system based on bus - Google Patents

Abstract

The utility model provides an electrodialysis is utmost point control system based on bus, relates to the electrically -driven membrane separation. An electrodialysis is utmost point control system based on bus that utilizes field bus and radio communication technique keep -It -Simple -Control system, produces to become to hang down this, and equipment stability is high with the interference killing feature is provided. Be equipped with host computer, radio signal conversion module, a radio signal transceiver, the 2nd radio signal transceiver, bus agreement communication module, CAN bus, data acquisition module, electric current functional module, utmost point functional module, liquid way functional module and power module. Having adopted advance field bus technique and distributed input and output modules and wireless remote control technique, showing and reducing system component and control wiring, reduced the work load and the error rate of the manufacturing, installation and debugging, reduced the consumption, made more swiftly safety of operation, improved stability and interference killing feature, engineering cost has significantly reduced.

Description

Polar control system is fallen in a kind of electrodialysis based on bus

Technical field

This utility model relates to electric drive membrance separation, especially relates to a kind of electrodialysis based on bus and falls polar control system.

Background technology

Electroosmose process, as a kind of electric drive membrane separation technique, has that energy expenditure is low, reagent consumption is few, environmental pollution is little, behaviour Make simple, easily be automated, the utilization rate advantages of higher of water, wide in aspect application prospects such as waste water desalination, soda acid separation Wealthy；Particularly concentrate at low concentration waste liquid, height has obvious advantage in terms of selecting separation.Along with electrodialytic membranes film technique Development, electrodialytic technique illustrates good development potentiality and market prospect at aspects such as desalinization, waste water process.Prominent The manufacture limitation of broken electrodialytic membranes, carries out membrane resistance rate, optionally regulates and controls, it is achieved low energy consumption, high selective electrodialysis divide From having become as the emphasis of its applied research, also realize the key of its commercial application.

Frequently pole-reversing electroosmosis, is an important breakthrough of electrodialytic technique, has significantly promoted the development of electrodialytic technique, extension Its application.Frequently pole-reversing refers in running, and at regular intervals, positive and negative electrode polarity is mutually switched once, Therefore being called frequently pole-reversing electroosmosis, it can clean ion exchange membrane and the dirt of electrode surface formation automatically, to guarantee ion The long-time stability of exchange membrane efficiency and the water quality of fresh water and the water yield.The Automated condtrol realizing equipment is electrodialysis skill with miniaturization Art is promoted and the core of application；But existing Control system architecture complexity limits the reduction of equipment volume.

Summary of the invention

The purpose of this utility model is the problems such as, equipment cost complicated for existing electrodialytic technique control structure is high, it is provided that profit With fieldbus and wireless communication technology simplified control system, produce into low, the one that stabilization of equipment performance is high with capacity of resisting disturbance Polar control system is fallen in electrodialysis based on bus.

This utility model is provided with host computer, wireless signal modular converter, the first wireless signal transceiver, the second wireless signal transmitting-receiving Device, bus protocol communication module, CAN, data acquisition module, function of current module, electrode inversing function module, fluid path function Module and power module；

Described host computer is connected by wireless signal modular converter and the first wireless signal transceiver, for by CAN, to number Data acquisition instructions is sent according to acquisition module, function of current module, electrode inversing function module, power module；

Described second wireless signal transceiver is connected with CAN by bus protocol communication module, has been used for host computer and CAN Wireless data transmission between bus；

Described data acquisition module is connected with CAN；Temperature sensor is connected composition temperature monitoring module with signal transmitting device, Pressure transducer and signal transmitting device connect decomposition pressure monitoring modular, liquid level sensor and signal transmitting device and connect composition liquid level prison Survey module, flow transducer and signal transmitting device and connect composition flow monitoring module；

Described function of current module is connected with CAN；Current sensor and signal transmitting device connect composition current monitoring module, Current controller and kinetic current PID control device composition current control module；

Described electrode inversing function module is connected with CAN；First voltage sensor and signal transmitting device connect composition the first voltage prison Surveying module, frequently pole-reversing controller and IGBT bridge-type are fallen polar circuit and are formed the control module of falling pole；

Described fluid path functional module is connected with CAN；Fluid path controller, fluid path control valve group and cistern group composition fluid path Control module；Electrodialysis reaction tank is connected with cistern group by fluid path functional module, and all kinds of reative cell production fluids are via fluid path function Module controls, and is diverted to the fresh-water pool in cistern group, dense pond, pond, pole and wastewater disposal basin；Sea water introduces storage after pretreatment Former pond in the group of pond；Fluid path functional module controls cistern group provides required reactant liquor for electrodialysis reaction tank；

Described power module is connected with CAN；Second voltage sensor and signal transmitting device connect composition the second voltage monitoring mould Block, three-phase alternating-current supply, commutation controller and IGBT three-phase bridge rectifier circuit connect composition rectification module, are used for as whole system System provides reliable and stable electric energy；The rectified module of three-phase alternating-current supply supplies unidirectional current, main circuit series electrical to system main circuit It is connected to the electrode at electrodialysis reaction tank two ends after stream functional module and electrode inversing function module, drives electrodialysis reaction to carry out.

This utility model introduces bus, the electrodialysis control system of optimization, has simplified system structure, has promoted electrodialysis plant little Typeization develops, and also the lifting for the reliability of equipment opens a kind of new technological approaches.

The beneficial effects of the utility model are: have employed advanced field bus technique and distributed input/output module and radio remote Process control technology, significantly reduces system element and controls wiring, decrease the manufacturing, the workload of installation and debugging and make mistakes Rate, reduces power consumption, makes the faster safety of operation, improves stability and capacity of resisting disturbance, greatly reduce engineering cost.

Accompanying drawing explanation

Fig. 1 is the control system theory diagram of this utility model embodiment.

Fig. 2 is the concrete system construction drawing of this utility model embodiment.

Respectively being labeled as in figure: 1-host computer, 2-wireless signal modular converter, 3-the first wireless signal transceiver, 4-second is wireless Signal transceiver, 5-bus protocol communication module, 6-CAN bus, 7-data acquisition module, 8-function of current module, 9-falls Pole functional module, 10-fluid path functional module, 11-power module, 12-temperature monitoring module, 13-pressure monitoring module, 14- Level monitoring module, 15-flow monitoring module, 16-current monitoring module, 17-current control module, 18-the first voltage monitoring Module, the 19-control module of falling pole, 20-fluid path control module, 21-the second voltage monitoring module, 22-rectification module, 23-signal Transmitter, 24-the second voltage sensor, 25-current sensor, 26-the first voltage sensor, 27-pressure transducer, 28- Temperature sensor, 29-flow transducer, 30-liquid level sensor, 31-commutation controller, 32-current controller, 33-frequently falls Pole controller, 34-electrodialysis reaction tank, 35-fluid path controller, 36-cistern group, 37-fluid path controls valve group, 38-IGBT Bridge-type falls polar circuit, and 39-kinetic current PID controls device, 40-IGBT three-phase bridge rectifier circuit, 41-three-phase alternating-current supply.

Detailed description of the invention

Below in conjunction with the accompanying drawings embodiment of the present utility model is further described.

Seeing Fig. 1 and 2, this utility model embodiment includes that host computer 1, wireless signal modular converter the 2, first wireless signal are received and dispatched Device the 3, second wireless signal transceiver 4, bus protocol communication module 5, CAN 6, data acquisition module 7, function of current mould Block 8, electrode inversing function module 9, fluid path functional module 10 and power module 11.

Described host computer 1 is connected with the first wireless signal transceiver 3 by wireless signal modular converter 2, is used for by CAN 6, Data acquisition instructions is sent, to production to data acquisition module 7, function of current module 8, electrode inversing function module 9, power module 11 The data such as the temperature of collection in worksite, pressure, flow, liquid level, to the operating current of electrodialysis reaction tank, running voltage and pole Working condition, the electric energy supply of control system is monitored；And according to program operation result or manual operation, by controlling bus, Send various regulating command to function of current module 8, electrode inversing function module 9, fluid path functional module 10 and power module 11, maintain The normal operation of electrode systems is fallen in electrodialysis.

Described second wireless signal transceiver 4 is connected with CAN 6 by bus protocol communication module 5, has been used for upper Wireless data transmission between machine 1 and CAN 6.

Described data acquisition module 7 is connected with CAN 6；Wherein, temperature sensor 28 is connected group with signal transmitting device 23 Becoming temperature monitoring module 12, pressure transducer 27 and signal transmitting device 23 connect decomposition pressure monitoring modular 13, liquid level sensor 30 and signal transmitting device 23 connect composition level monitoring module 14, flow transducer 29 and signal transmitting device 23 connect composition stream Amount monitoring modular 15, for temperature, pressure, reactant liquor turnover flow and cistern to production scene electrodialysis reaction tank 34 Each pit level data of group 36 are acquired and upload.

Described function of current module 8 is connected with CAN 6；Wherein, current sensor 25 and signal transmitting device 23 connection group Become current monitoring module 16, current controller 32 and kinetic current PID to control device 39 and form current control module 17, be used for Be monitored the operating current of electrodialysis reaction tank 34, data are uploaded and control, and operating current is controlled at kinetic current limit value In.

Described electrode inversing function module 9 is connected with CAN 6；Wherein, the first voltage sensor 26 and signal transmitting device 23 are even Connecing composition the first voltage monitoring module 18, frequently pole-reversing controller 33 and IGBT bridge-type is fallen polar circuit 38 and is formed the control of falling pole mould Block 19, for monitoring the reaction pole tension of electrodialysis reaction tank 34 and the working condition of falling pole, and moves the frequently pole-reversing in reaction It is controlled.

Described fluid path functional module 10 is connected with CAN 6；Wherein, fluid path controller 35, fluid path control valve group 37 and Cistern group 36 forms fluid path control module 20, for the consumption of the reactant liquor of electrodialysis reaction tank 34 and discharge are controlled, The fresh water, dense water, pole water and the waste water that produce reaction shunt and collect, and carry out former water (sea water) for electrodialysis reaction Supply.Electrodialysis reaction tank 34 is connected with cistern group 36 by fluid path functional module 10, and all kinds of reative cell production fluids are via fluid path Functional module 10 controls, and is diverted to the fresh-water pool in cistern group 36, dense pond, pond, pole and wastewater disposal basin；Sea water is through pre-place The former pond in cistern group 36 is introduced after reason；Fluid path functional module 10 controls cistern group 36 and carries for electrodialysis reaction tank 34 For required reactant liquor.

Described power module 11 is connected with CAN 6；Wherein, the second voltage sensor 24 and signal transmitting device 23 connection group Becoming the second voltage monitoring module 21, three-phase alternating-current supply 14, commutation controller 31 and IGBT three-phase bridge rectifier circuit 40 are even Connect composition rectification module 22, for the electric energy reliable and stable for whole system offer.The rectified module of three-phase alternating-current supply 41 22 Supply unidirectional current to system main circuit, be connected to electrodialysis after main circuit series current functional module 8 and electrode inversing function module 9 anti- Answer the electrode at two ends, pond 34, drive electrodialysis reaction to carry out.

Operation principle of the present utility model is: utilize wireless communication technology, by CAN 6 by electrodialysis reaction industry scene Data acquisition module 7, function of current module 8, electrode inversing function module 9, fluid path functional module 10 and power module 11 and host computer 1 (containing engineer station, operator station etc.) couple together, and the measured value gathered and procedural information are received and dispatched by the first wireless signal Device 3 and wireless signal transceiver 2 are transferred to host computer 1, are monitored field working conditions at host computer 1, and host computer 1 is produced Various control instructions and adjustment information are transferred to each required function module of production scene by CAN 6, it is achieved that industry spot Distributed intelligence control and the communication of each functional module and host computer 1.

By control based on bus and management, each functional module coordinate operation, complete the flow process that frequently pole-reversing electroosmosis water processes, Reaction process by time a length of 1.5 hours the forward reaction stage and time a length of 10 minutes backward erosion stage two step circulation constitute.

In the described forward reaction stage, electrode inversing function module 9 controls electrodialysis reaction tank 34 and connects forward voltage, function of current module 8 Reaction operating current is monitored and regulates, makes operating current be less than warning value；In pond, sea water carries out desalination process, each instead Answer room production fluid to control via fluid path functional module 10, respectively enter corresponding cistern in cistern group 36；Reaction in former pond Liquid controls through fluid path functional module 10, supplies water for electrodialysis reaction tank 34；A part of reactant liquor in dense pond is through fluid path function mould Block 10 controls, the former water of mixing corresponding proportion, imports electrodialysis reaction tank 34 and recycles.

In the described backward erosion stage, electrode inversing function module 9 controls electrodialysis reaction tank 34 turn-on reversal voltage, in fluid path functional module Under the control of 10, the former water in pond, cistern group 36 Central Plains is imported in each reative cell of electrodialysis reaction tank 34, and after washing away In the unified wastewater disposal basin importing in cistern group 36 of the waste liquid produced.

In system operation, gather and upload various measured values and the process letter of electrodialysis industry spot by each monitoring module Breath, monitors on-the-spot each module, the working condition of each link at host computer 1 by program interface, needs whole system according to production The duty of system, to the abnormal conditions fast reaction occurred in system, investigates fault in time, safeguards system stable operation.

This utility model is that polar control system is fallen in a kind of electrodialysis that have employed bus, contributes to simplified control system, promotes small-sized The popularization of sea water desalting equipment and application.There is the bus communication technology that utilizes, coordinate to control frequently pole-reversing electroosmosis water treatment system Function.This utility model have employed advanced field bus technique and distributed input/output module and Wireless remote control technology, Significantly reduce system element and control wiring, decreasing the manufacturing, the workload of installation and debugging and error rate, reduce merit Consumption, makes the faster safety of operation, improves stability and capacity of resisting disturbance, greatly reduce engineering cost.

Claims (1)

1. polar control system is fallen in an electrodialysis based on bus, it is characterised in that be provided with host computer, wireless signal modular converter, First wireless signal transceiver, the second wireless signal transceiver, bus protocol communication module, CAN, data acquisition module, Function of current module, electrode inversing function module, fluid path functional module and power module；

Described host computer is connected by wireless signal modular converter and the first wireless signal transceiver, for by CAN, to number Data acquisition instructions is sent according to acquisition module, function of current module, electrode inversing function module, power module；

Described second wireless signal transceiver is connected with CAN by bus protocol communication module, has been used for host computer and CAN Wireless data transmission between bus；

Described data acquisition module is connected with CAN；Temperature sensor is connected composition temperature monitoring module with signal transmitting device, Pressure transducer and signal transmitting device connect decomposition pressure monitoring modular, liquid level sensor and signal transmitting device and connect composition liquid level prison Survey module, flow transducer and signal transmitting device and connect composition flow monitoring module；

Described function of current module is connected with CAN；Current sensor and signal transmitting device connect composition current monitoring module, Current controller and kinetic current PID control device composition current control module；

Described electrode inversing function module is connected with CAN；First voltage sensor and signal transmitting device connect composition the first voltage prison Surveying module, frequently pole-reversing controller and IGBT bridge-type are fallen polar circuit and are formed the control module of falling pole；

Described fluid path functional module is connected with CAN；Fluid path controller, fluid path control valve group and cistern group composition fluid path Control module；Electrodialysis reaction tank is connected with cistern group by fluid path functional module, and all kinds of reative cell production fluids are via fluid path function Module controls, and is diverted to the fresh-water pool in cistern group, dense pond, pond, pole and wastewater disposal basin；Sea water introduces storage after pretreatment Former pond in the group of pond；Fluid path functional module controls cistern group provides required reactant liquor for electrodialysis reaction tank；

Described power module is connected with CAN；Second voltage sensor and signal transmitting device connect composition the second voltage monitoring mould Block, three-phase alternating-current supply, commutation controller and IGBT three-phase bridge rectifier circuit connect composition rectification module, are used for as whole system System provides reliable and stable electric energy；The rectified module of three-phase alternating-current supply supplies unidirectional current, main circuit series electrical to system main circuit It is connected to the electrode at electrodialysis reaction tank two ends after stream functional module and electrode inversing function module, drives electrodialysis reaction to carry out.