CN107840391A - A kind of desalinization processing unit - Google Patents
A kind of desalinization processing unit Download PDFInfo
- Publication number
- CN107840391A CN107840391A CN201711275257.8A CN201711275257A CN107840391A CN 107840391 A CN107840391 A CN 107840391A CN 201711275257 A CN201711275257 A CN 201711275257A CN 107840391 A CN107840391 A CN 107840391A
- Authority
- CN
- China
- Prior art keywords
- temperature
- linear valve
- unit
- seawater
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention provides a kind of desalinization processing unit, including the first linear valve, blender, sea water desalting equipment and the second linear valve, first linear valve controls seawater raw water inlet, sea water desalting equipment discharges qualified fresh water and concentrated seawater, concentrated seawater reenters desalination circulation, second linear valve controls concentrated seawater inlet, blender is mixed seawater raw water and concentrated seawater, in addition to the first temperature detecting unit, first flow detection unit, second temperature detection unit, second flow detection unit, the 3rd temperature detecting unit and control unit.The present invention adjusts ocean temperature and inflow into two linear valves by single-chip microcomputer in real time, it is always ensured that the ocean temperature into desalting plant in setting value, so that the process parameter of desalting plant under continually changing external environmental condition also be maintained at setting duty parameter it is constant, so as to ensure that fresh water yield and water quality, also so that desalting plant is easily controllable and safeguard, the operating efficiency of desalting plant is improved.
Description
Technical field
The present invention relates to field of sea water desalting technology, more particularly to a kind of desalinization processing unit.
Background technology
Desalinization, i.e., fresh water is produced using seawater desalination, be to realize the increment technique of increasing income that water resource utilizes, Ke Yizeng
Add fresh water total amount, and not by space-time and climatic effect, water quality is good, and price is gradually reasonable, can ensure coastal Drinking Water for Residents and
The stable water supplies such as Industrial Boiler moisturizing.
In sea water desalinating unit in actual use, the real work parameter of desalting plant is generally different from the work of setting
Make parameter, so that desalting plant can not play the process features of former design system, cause performance bad.Such case be by
Change at any time in the ocean temperature for actually entering desalting plant, it is difficult to caused by consistent with the temperature of setting.Such phenomenon for
It is coastal to be especially apparent with the influence of sea water desalting equipment, due to its Special use environment and condition, in Various Seasonal and marine site, sea
Coolant-temperature gage changes very greatly, causes desalting plant fluctuation of service, aquifer yield deficiency, deteriorating water quality is serious, even results in desalination and sets
Standby cisco unity malfunction.
The content of the invention
(1) technical problem solved
In order to solve the above problems, the invention provides a kind of desalinization processing unit, it is always ensured that into desalination and sets
Standby ocean temperature is in setting value so that the process parameter of desalting plant is also maintained under continually changing external environmental condition
It is constant to set duty parameter, so as to ensure that fresh water yield and water quality.
(2) technical scheme
A kind of desalinization processing unit, including the first linear valve, blender, sea water desalting equipment and the second linear valve,
First linear valve controls seawater raw water inlet, and the sea water desalting equipment discharges qualified fresh water and concentrated seawater, described dense
Seawater reenters desalination circulation, and second linear valve controls concentrated seawater inlet, and the blender is by the seawater raw water
Mixed with the concentrated seawater, in addition to the detection of the first temperature detecting unit, first flow detection unit, second temperature is single
Member, second flow detection unit, the 3rd temperature detecting unit and control unit；First temperature detecting unit and described first
Flow detection unit connects first linear valve and the blender, and the seawater that detection enters first linear valve is former
The temperature and inflow of water, output analog voltage signal are sent into described control unit；The second temperature detection unit and described
Second flow detection unit connects second linear valve and the blender, and detection enters the described dense of second linear valve
The temperature and inflow of seawater, output analog voltage signal are sent into described control unit；The 3rd temperature detecting unit connection
The blender and the sea water desalting equipment, detection enter the temperature of the sea water desalting equipment mixing seawater, output simulation
Voltage signal is sent into described control unit；Described control unit gathers the position of first linear valve and second linear valve
Signal, and the detection signal of the sensor are sent into A/D conversion passages and handled together, output control signal regulation described the
The position of one linear valve and second linear valve；Also include serial communication unit, described control unit is led to by the serial ports
Believe that unit communicates to connect with host computer, default temperature value and water inlet value are sent into described control unit and carried out by the host computer
Each parameter of collection is uploaded to the host computer and carries out real-time display by storage, described control unit.
Further, described control unit selects single-chip microcomputer C8051F020.
Further, first, second, and third temperature detecting unit has identical circuit structure, including temperature passes
Sensor, temperature conditioner, triode, the first~the 3rd rheostat, the first~the 3rd diode, the first~the 4th electric capacity and first
~the four resistance, wherein the temperature sensor selects PT100 platinum resistance thermometer sensor,s, the temperature conditioner is become from temperature-current
Send device XTR105.
Further, first and second flow detection unit has an identical circuit structure, including flow sensor,
The electric capacity of 5th~the 8th resistance, the 5th and the 6th, wherein the flow sensor selects fluid flowmeter.
Further, described control unit also includes D/A output modular converters, and the D/A outputs modular converter includes D/A
Converter, operational amplifier and the 9th~the 14th resistance, wherein the D/A converter selects LTC2622, the operation amplifier
Device selects LM258.
Further, the serial communication unit includes serial port level conversion core piece, connector and the 7th~the 11st electricity
Hold, wherein the serial port level conversion core piece selection standard RS232 interface chip MAX232, the connector is 9 needle connectors.
(3) beneficial effect
The invention provides a kind of desalinization processing unit, is adjusted in real time by single-chip microcomputer into the sea of two linear valves
Coolant-temperature gage and inflow, it is always ensured that the ocean temperature into desalting plant in setting value so that the process parameter of desalting plant
It is constant that setting duty parameter is also maintained under continually changing external environmental condition, so as to ensure that fresh water yield and water quality,
Also so that desalting plant it is easily controllable and safeguard, improve the operating efficiency of desalting plant, apparatus structure is simple, reduces and extends out
Unit, cost is reduced, accuracy of detection is high, fast response time, stability and good reliability, has stronger scalability.
Brief description of the drawings
Fig. 1 is a kind of system architecture diagram of desalinization processing unit involved in the present invention.
Fig. 2 is a kind of temperature detecting unit circuit theory diagrams of desalinization processing unit involved in the present invention.
Fig. 3 is a kind of flow detection unit circuit theory diagrams of desalinization processing unit involved in the present invention.
Fig. 4 is that a kind of D/A of desalinization processing unit involved in the present invention exports modular converter circuit theory diagrams.
Fig. 5 is a kind of serial communication element circuit schematic diagram of desalinization processing unit involved in the present invention.
Embodiment
Embodiment involved in the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of desalinization processing unit, including the first linear valve, blender, sea water desalting equipment and
Bilinear valve, the first linear valve control seawater raw water inlet, sea water desalting equipment discharge qualified fresh water and concentrated seawater, concentrated seawater
Desalination circulation, the second linear valve control concentrated seawater inlet are reentered, blender is mixed seawater raw water and concentrated seawater,
Also include the first temperature detecting unit, first flow detection unit, second temperature detection unit, second flow detection unit, the
Three temperature detecting units and control unit；First temperature detecting unit connects the first linear valve with first flow detection unit and mixed
Clutch, detection export analog voltage signal and are sent into control unit into the temperature and inflow of the seawater raw water of the first linear valve；
Second temperature detection unit connects the second linear valve and blender with second flow detection unit, and detection enters the second linear valve
The temperature and inflow of concentrated seawater, output analog voltage signal are sent into control unit；3rd temperature detecting unit connects blender
And sea water desalting equipment, into the temperature of sea water desalting equipment mixing seawater, it is single that output analog voltage signal is sent into control for detection
Member；Control unit gathers the position signalling of the first linear valve and the second linear valve, and the detection signal of the sensor is sent together
Enter A/D conversion passages to be handled, output control signal adjusts the position of the first linear valve and the second linear valve；Also include serial ports
Communication unit, control unit are communicated to connect by serial communication unit and host computer, and host computer is by default temperature value and water inlet
Value is sent into control unit and stored, and each parameter of collection is uploaded to host computer and carries out real-time display by control unit.
The seawater raw water for entering device is mixed with the concentrated seawater that desalting plant is discharged, using the waste heat of concentrated seawater,
Seawater raw water is mixed into the temperature of desalting plant setting duty parameter before entrance desalting plant.Into always entering for desalting plant
Water quantity holding is constant, therefore controls key to be the control of two linear valve regulation, and it is used to adjust the seawater into blender
The ratio of raw water and concentrated seawater, because the temperature of seawater raw water changes at any time, so the adjustment control phase for two linear valves
Corresponding is dynamical system.
Control unit is mainly that the position of ocean temperature and inflow and two linear valves is measured, and Jiang Gelu is defeated
Go out analog signal and be converted to data signal to be handled.Control unit selects single-chip microcomputer C8051F020, is the mixing inherited completely
Signal system level chip (SoC), there is the CIP-51 kernel completely compatible with 8051 instruction set.It is integrated with a chip
The nearly all analog- and digital- peripheral hardware and other functional parts required for a single-chip data acquisition or control system are formed,
Original 8051 system break source extend to 22 by 7, terminal system needs less MCU to intervene, and has been internally integrated energy
The clock generator of autonomous working, and 12,16 tunnels precision A/D converter, up to spi bus interface, 64 programmable I/O
Port.Linear valve position feedback directly determines defeated into the seawater raw water of blender and the mixed proportion of concentrated seawater, its position
It is voltage signal to go out signal, is sent into C8051F020 and carries out A/D conversions.
Mixing ocean temperature of the desalting plant requirement after blender is definite value, it is therefore necessary to which accurate measurement enters mixing
The seawater raw water and concentrated seawater temperature of device and the mixing ocean temperature for entering desalting plant.First, second, and third temperature is examined
Surveying unit has identical circuit structure, as shown in Fig. 2 including temperature sensor, temperature conditioner U1, triode Q1, variable resistance
Device Rw1~Rw3, diode D1~D3, electric capacity C1~C4 and resistance R1~R4, wherein temperature sensor select PT100 platinum thermoelectricity
Resistance, temperature conditioner U1 select temperature-current transmitter XTR105.XTR105 is the temperature-electricity for being exclusively used in system for detecting temperature
Flow transmitter, the resistance value variation with temperature amount of PT100 platinum resistance thermometer sensor,s can be converted into current signal, the current value only with
PT100 platinum resistance thermometer sensor, resistances are relevant, and unrelated with line resistance, can not only eliminate error caused by line resistance, and
Linear compensation can be carried out to the temperature quadratic term in PT100 platinum resistance thermometer sensor,s, improve the linearity and precision of temperature detection.Temperature
Detection unit output voltage signal is sent into C8051F020 and carries out A/D conversions.
Because the total inflow for entering desalting plant be definite value, need to detect respectively into the seawater raw water of blender and dense
The inflow of seawater.First and second flow detection units have identical circuit structure, as shown in figure 3, including flow sensing
Device, resistance R5~R8, electric capacity C5 and C6, wherein flow sensor select fluid flowmeter.Fluid flowmeter output be 4~
20mA standard signal, C8051F020 progress A/D conversions are entered after sampling resistor R6 is converted into 1~5V voltage signals.
First and second linear valves are used to control seawater raw water and concentrated seawater to enter the ratio of blender, the aperture of linear valve
It is linear with input control voltage (0~10V).Above-mentioned parameters are carried out A/D conversions and and setting value by C8051F020
Comparative analysis, output digit signals, it is necessary to be converted into analog voltage signal after control linear valve.It is defeated that control unit also includes D/A
Go out modular converter, as shown in figure 4, D/A output modular converter include D/A converter U2, operational amplifier U3 and resistance R9~
R14, wherein D/A converter U2 select LTC2622, operational amplifier U3 to select LM258.C8051F020 by spi bus with
LTC2622 is connected with each other, and the C8051F020 data signals exported are converted into 0~2V analog voltage signal by LTC2622.Adopt
The crosstalk between signal can be avoided with spi bus connection digital and analogue signals, and LTC2622 exports 0~2V analog voltage signal, needs
The input of linear valve is connected to after operational amplifier LM258 amplifications.
C8051F020 carries out data exchange by serial communication unit and host computer.Because host computer serial ports is RS232 marks
Quasi- interface, with input and output be Transistor-Transistor Logic level C8051F020 on interface specification it is inconsistent, therefore C8051F020 with it is upper
Serial communication between machine needs to carry out TTL-RS232 level conversion.As shown in figure 5, serial communication unit includes serial port power
Flat conversion chip U4, connector J1 and electric capacity C7~C11, wherein serial port level conversion core piece U4 selection standards RS232 interface core
Piece MAX232, connector J1 are 9 needle connectors.MAX232 can be realized with univoltage+5V RS232 interface logical one (- 15~
3V) and logical zero (3~15V) level conversion.C8051F020 RXD mouths are serial input terminal, and TXD mouths are Serial output
End.The serial ports of 9 needle connector J1 connection host computers, RS232 standard for serial communication interfaces are easy to use, and wiring is few and transmission distance
From up to 15m.Host computer sends the total inflow and its temperature value into desalting plant of setting to C8051F020 and deposited
The parameters of collection are uploaded to host computer and carry out real-time display by storage, C8051F020.
The invention provides a kind of desalinization processing unit, is adjusted in real time by single-chip microcomputer into the sea of two linear valves
Coolant-temperature gage and inflow, it is always ensured that the ocean temperature into desalting plant in setting value so that the process parameter of desalting plant
It is constant that setting duty parameter is also maintained under continually changing external environmental condition, so as to ensure that fresh water yield and water quality,
Also so that desalting plant it is easily controllable and safeguard, improve the operating efficiency of desalting plant, apparatus structure is simple, reduces and extends out
Unit, cost is reduced, accuracy of detection is high, fast response time, stability and good reliability, has stronger scalability.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to the structure of the present invention
Think and scope is defined.On the premise of design concept of the present invention is not departed from, technology of the ordinary people in the field to the present invention
The all variations and modifications that scheme is made, all should drop into protection scope of the present invention, the claimed technology contents of the present invention,
All record in detail in the claims.
Claims (6)
1. a kind of desalinization processing unit, including the first linear valve, blender, sea water desalting equipment and the second linear valve, institute
The first linear valve control seawater raw water inlet is stated, the sea water desalting equipment discharges qualified fresh water and concentrated seawater, the dense sea
Water reenters desalination circulation, and second linear valve controls concentrated seawater inlet, the blender by the seawater raw water and
The concentrated seawater is mixed, it is characterised in that：Also include the first temperature detecting unit, first flow detection unit, the second temperature
Spend detection unit, second flow detection unit, the 3rd temperature detecting unit and control unit；First temperature detecting unit and
The first flow detection unit connects first linear valve and the blender, and detection enters the institute of first linear valve
The temperature and inflow of seawater raw water are stated, output analog voltage signal is sent into described control unit；The second temperature detection is single
First that second linear valve and the blender are connected with the second flow detection unit, detection enters second linear valve
The concentrated seawater temperature and inflow, output analog voltage signal be sent into described control unit；3rd temperature detection
Unit connects the blender and the sea water desalting equipment, and detection enters the temperature of the sea water desalting equipment mixing seawater,
Export analog voltage signal and be sent into described control unit；Described control unit gathers first linear valve and described second linear
The position signalling of valve, and the sensor detection signal be sent into together A/D conversion passage handled, output control signal adjust
Save the position of first linear valve and second linear valve；Also include serial communication unit, described control unit passes through institute
State serial communication unit to communicate to connect with host computer, default temperature value and water inlet value are sent into the control by the host computer
Unit is stored, and each parameter of collection is uploaded to the host computer and carries out real-time display by described control unit.
A kind of 2. desalinization processing unit according to claim 1, it is characterised in that：Described control unit selects monolithic
Machine C8051F020.
A kind of 3. desalinization processing unit according to claim 1, it is characterised in that：Described first, second, and third
Temperature detecting unit has identical circuit structure, including temperature sensor, temperature conditioner, triode, the first~the 3rd change
Device, the first~the 3rd diode, the first~the 4th electric capacity and the first~the 4th resistance are hindered, wherein the temperature sensor is selected
PT100 platinum resistance thermometer sensor,s, the temperature conditioner select temperature-current transmitter XTR105.
A kind of 4. desalinization processing unit according to claim 1, it is characterised in that：The first and second flows inspection
Surveying unit has an identical circuit structure, including flow sensor, the 5th~the 8th resistance, the 5th and the 6th electric capacity, wherein institute
State flow sensor and select fluid flowmeter.
A kind of 5. desalinization processing unit according to claim 1, it is characterised in that：Described control unit also includes D/
A exports modular converter, and the D/A outputs modular converter includes D/A converter, operational amplifier and the 9th~the 14th resistance,
Wherein described D/A converter selects LTC2622, and the operational amplifier selects LM258.
A kind of 6. desalinization processing unit according to claim 1, it is characterised in that：The serial communication unit includes
Serial port level conversion core piece, connector and the 7th~the 11st electric capacity, wherein the serial port level conversion core piece selection standard
RS232 interface chip MAX232, the connector are 9 needle connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275257.8A CN107840391A (en) | 2017-12-06 | 2017-12-06 | A kind of desalinization processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275257.8A CN107840391A (en) | 2017-12-06 | 2017-12-06 | A kind of desalinization processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107840391A true CN107840391A (en) | 2018-03-27 |
Family
ID=61664501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711275257.8A Withdrawn CN107840391A (en) | 2017-12-06 | 2017-12-06 | A kind of desalinization processing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107840391A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777252A (en) * | 2020-07-10 | 2020-10-16 | 陕西理工大学 | Anti-blocking seawater desalination device based on graphene filtering |
-
2017
- 2017-12-06 CN CN201711275257.8A patent/CN107840391A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777252A (en) * | 2020-07-10 | 2020-10-16 | 陕西理工大学 | Anti-blocking seawater desalination device based on graphene filtering |
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Application publication date: 20180327 |