CN206178499U - Sedimentation tank ph value automatic control system - Google Patents
Sedimentation tank ph value automatic control system Download PDFInfo
- Publication number
- CN206178499U CN206178499U CN201621235332.9U CN201621235332U CN206178499U CN 206178499 U CN206178499 U CN 206178499U CN 201621235332 U CN201621235332 U CN 201621235332U CN 206178499 U CN206178499 U CN 206178499U
- Authority
- CN
- China
- Prior art keywords
- value
- sedimentation tank
- resistance
- voltage
- motor
- 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.)
- Expired - Fee Related
Links
- 238000004062 sedimentation Methods 0.000 title claims abstract description 28
- 239000000126 substance Substances 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 7
- 229940079593 drug Drugs 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000006477 desulfuration reaction Methods 0.000 abstract description 4
- 230000023556 desulfurization Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Sedimentation tank pH value automatic control system belongs to sedimentation tank pH value control technical field, and this system includes pH value test sensor, intelligence box, converter and motor, and pH value test sensor links to each other with the input of intelligence box, and pH value test sensor sends the sedimentation tank pH value that detects to the intelligence box with voltage signal's form, does the intelligence box convert a voltage signal who receives to 0 the 10V magnitude of voltage sends the converter input to, the output of converter links to each other with the motor, and it is according to the rotational speed of the magnitude of voltage control motor of receipt, the motor links to each other with the doser of sedimentation tank, and it is through the dose that adds of rotary speed control doser. The beneficial effects of the utility model are that: this control system can add the dose by automatic control to can accurately and timely survey out the sedimentation tank pH value, and accord with GB 20426 according to real -time pH value automatic control with dose, realization discharge waste water, waste gas 2006 the requirement of file. This automatic control system is applicable to the desulfurization process of each industrial base boiler trade.
Description
Technical field
This utility model belongs to sedimentation tank pH value control technology field, and in particular to a kind of sedimentation tank pH value automatically controls and is
System.
Background technology
Boiler room sedimentation tank sewage effluent needs to carry out desulfurization, if without desulfurization, pH value will be exceeded, and effluent sewerage is by dirt
Dye water source.According to GB 20426-2006 files, sewage effluent grade III Standard PH6-9, sulfide content is 1.0mg/L.I am single
Position desulfurizer goes to neutralize acid-base value using industrial frequency control drug feeding device toward dosing in sedimentation tank (that is, acidic materials), but, due to
The pH value of sedimentation tank can not be accurately and timely determined, causes not know whether discharge sulfur dioxide in flue gas content is exceeded.Also, add
Dose can not be given according to actual value, can only add dose by timing means, and need personnel to be nursed always.If
Personnel nurse not in time, and the pH value of sewage effluent will be exceeded, does not meet the requirement of GB 20426-2006 files.Therefore, one is designed
Planting can automatically control chemical feeding quantity, and the automatic control system for preventing sulfur dioxide in flue gas exceeded is imperative.
Utility model content
In order to solve prior art presence due to personnel nurse chemical feeding quantity cause not in time discharge sulfur dioxide in flue gas
Exceeded technical problem, this utility model provides a kind of sedimentation tank pH value automatic control system.
The technical scheme that this utility model solution technical problem is taken is as follows：
Sedimentation tank pH value automatic control system, it includes pH value test sensor, smart box, converter and motor, PH
Value test sensor is connected with the input of smart box, and pH value tests sensor by the sedimentation tank pH value for detecting with voltage signal
Form send smart box to；The outfan of smart box is connected with inverter input, and it is converted into the voltage signal of reception
0-10V magnitudes of voltage send inverter input to；The outfan of converter is connected with motor, and it is according to the magnitude of voltage control for receiving
The rotating speed of motor processed；Motor is connected with the drug feeding device of sedimentation tank, and it controls the chemical feeding quantity of drug feeding device by rotating speed.
Above-mentioned smart box include transformator U1, transformator U2, the first bridge rectifier, the second bridge rectifier, two
Pole pipe D5, swept resistance R2, resistance R1, resistance R3, resistance R4, resistance R5, resistance Rf, resistance Rp and operational amplifier, first
Bridge rectifier is made up of diode D1, D2, D3, D4, and the second bridge rectifier is made up of diode D6, D7, D8, D9；
Civil power output voltage after transformator U2, the first bridge rectifier rectification is 10.8V, then by diode D5 and the electricity that slides
It is 10V that resistance R2 carries out output voltage after pressure regulation；Civil power output voltage after transformator U1, the second bridge rectifier rectification is
10.8v, then+5.4v and -5.4v voltages are adjusted to through resistance R3, resistance R4 partial pressures ,+5.4v voltages are added to into operational amplifier
No. 3 power supply terminals, -5.4v voltages are added to No. 8 power supply terminals of operational amplifier；The output voltage of pH value test sensor adds
To Ui ends, analog quantity voltage value U0 is exported by operational amplifier, U0 voltages are added on frequency converter voltage input terminal.
The beneficial effects of the utility model are：The control system can automatically control chemical feeding quantity, and can be accurately and timely
Determine sedimentation tank pH value, and chemical feeding quantity is automatically controlled according to real-time pH value, realize that discharging waste water, waste gas meets GB
The requirement of 20426-2006 files.The automatic control system is applied to the desulfurization process of each industrial base boiler industry.
Description of the drawings
Fig. 1 is the operation principle schematic diagram of this utility model sedimentation tank pH value automatic control system.
Fig. 2 is the operation principle schematic diagram of this utility model smart box.
Fig. 3 is the oscillogram of U3 in Fig. 2.
Specific embodiment
This utility model is described in further details with reference to the accompanying drawings and examples.
As shown in Figure 1 to Figure 3, sedimentation tank pH value automatic control system of the present utility model include pH value test sensor,
Smart box, converter and motor, pH value test sensor is connected with the input of smart box, and pH value test sensor will be detected
To sedimentation tank pH value send smart box in the form of voltage signal；The outfan of smart box is connected with inverter input,
The voltage signal of reception is converted into 0-10V magnitudes of voltage and sends inverter input to by it；The outfan and motor of converter
It is connected, it controls the rotating speed of motor according to the magnitude of voltage for receiving；Motor is connected with the drug feeding device of sedimentation tank, and it passes through rotating speed
The chemical feeding quantity of control drug feeding device.
The control process of this utility model sedimentation tank pH value automatic control system is：First, used by pH value instrument
PH value test sensor determines the pH value of sedimentation tank, and pH value test sensor adopts the Chinese industrial acidity of model KTPH -01
Meter；Then, Chinese industrial acidity meter sends the data for measuring to smart box and is calculated, and the result of calculating is converted into 0-10V
Magnitude of voltage sends converter, (the job number 6se6400- of model SIEMENS micromaster 440 that converter is adopted to
5aw00-0mp0), the rotating speed of inverter control motor, the faster chemical feeding quantity of rotating speed of motor is bigger, the slower chemical feeding quantity of rotating speed
It is less.
The computing circuit main composition of smart box is：The operational amplifier of one model UA741, power be 50W,
The miniature transformer U1 that input voltage is 220V, output voltage is 24V, a power is 50W, input voltage is 220V, output
Voltage is the miniature transformer U2 of 12V, the first bridge rectifier being made up of diode D1, D2, D3, D4 that power is 5W,
The second bridge rectifier being made up of for diode D6, D7, D8, D9 of 5W power, power is the diode D5 of 5W, and power is
50W, maximum value are the swept resistance R2, resistance R1, resistance R3, resistance R4, resistance R5, resistance Rf and resistance Rp of 10K Ω.Intelligence
The computing formula of energy box output voltage U0 is as follows：
Wherein, Ui is the output voltage of Chinese industrial acidity meter, and U3 is civil power through transformator U2, the first bridge rectifier electricity
Road, diode D5 and swept resistance R2 carry out the output voltage after step-down rectifier pressure regulation for 10V.
Claims (3)
1. sedimentation tank pH value automatic control system, it is characterised in that the system includes pH value test sensor, smart box, frequency conversion
Device and motor, pH value test sensor is connected with the input of smart box, and pH value tests sensor by the sedimentation tank for detecting
PH value sends smart box in the form of voltage signal；The outfan of smart box is connected with inverter input, its by receive
Voltage signal is converted into 0-10V magnitudes of voltage and sends inverter input to；The outfan of converter is connected with motor, its basis
The magnitude of voltage of reception controls the rotating speed of motor；Motor is connected with the drug feeding device of sedimentation tank, and it passes through rotating speed and controls drug feeding device
Chemical feeding quantity.
2. sedimentation tank pH value automatic control system as claimed in claim 1, it is characterised in that the smart box includes transformator
U1, transformator U2, the first bridge rectifier, the second bridge rectifier, diode D5, swept resistance R2, resistance R1, resistance
R3, resistance R4, resistance R5, resistance Rf, resistance Rp and operational amplifier, the first bridge rectifier by diode D1, D2, D3,
D4 is constituted, and the second bridge rectifier is made up of diode D6, D7, D8, D9；Civil power passes through transformator U2, the first bridge rectifier
Output voltage is 10.8V after circuit rectifies, then it is 10V to carry out output voltage after pressure regulation by diode D5 and swept resistance R2；
Civil power output voltage after transformator U1, the second bridge rectifier rectification is 10.8v, then through resistance R3, resistance R4 point
Pressure is adjusted to+5.4v and -5.4v voltages, and+5.4v voltages are added to into No. 3 power supply terminals of operational amplifier, and -5.4v voltages are added to
No. 8 power supply terminals of operational amplifier；The output voltage of pH value test sensor is added to Ui ends, and by operational amplifier mould is exported
Analog quantity magnitude of voltage U0, U0 voltages are added on frequency converter voltage input terminal.
3. sedimentation tank pH value automatic control system as claimed in claim 1 or 2, it is characterised in that the pH value test sensing
Device is Chinese industrial acidity meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621235332.9U CN206178499U (en) | 2016-11-17 | 2016-11-17 | Sedimentation tank ph value automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621235332.9U CN206178499U (en) | 2016-11-17 | 2016-11-17 | Sedimentation tank ph value automatic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206178499U true CN206178499U (en) | 2017-05-17 |
Family
ID=58686408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621235332.9U Expired - Fee Related CN206178499U (en) | 2016-11-17 | 2016-11-17 | Sedimentation tank ph value automatic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206178499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187906A (en) * | 2018-10-19 | 2019-01-11 | 东莞理工学院 | A kind of water quality detecting device and detection method of Industrial Boiler |
-
2016
- 2016-11-17 CN CN201621235332.9U patent/CN206178499U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187906A (en) * | 2018-10-19 | 2019-01-11 | 东莞理工学院 | A kind of water quality detecting device and detection method of Industrial Boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |