CN1378111A - Intelligent control method and device for adding chemical in running water production - Google Patents
Intelligent control method and device for adding chemical in running water production Download PDFInfo
- Publication number
- CN1378111A CN1378111A CN 02111648 CN02111648A CN1378111A CN 1378111 A CN1378111 A CN 1378111A CN 02111648 CN02111648 CN 02111648 CN 02111648 A CN02111648 A CN 02111648A CN 1378111 A CN1378111 A CN 1378111A
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- Prior art keywords
- water
- converter
- sensor
- turbidity
- dosing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 239000000126 substance Substances 0.000 title abstract 5
- 239000008399 tap water Substances 0.000 claims description 9
- 235000020679 tap water Nutrition 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 208000003870 Drug Overdose Diseases 0.000 description 1
- 206010033296 Overdoses Diseases 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 231100000725 drug overdose Toxicity 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention discloses the intelligent control method and device for adding chemical in running water production. The turbidity, flow rate, temperature, pH value, alkalinity of the original water as well as turbidity of water after being deposited and other signal are transmitted by relative sensors into analog signals, the analog signals are converted in A/D converter before input to computer, the computer processes the data to find out the chemical added amount and the stroke or frequency of the measuring pump, and the calculated stroke or frequency is converted in D/A converter into analog signal for controlling the addition of chemical via the measuring pump. The device of the present invention is simple and can be used in the intelligent control of adding chemical in running water production.
Description
Technical field
The present invention relates to the control method and the device thereof of dosing in the tap water production.
Background technology
Tap water enterprise is faced with the problem of producing high quality water as how lower cost, and wherein to add alum (claiming dosing again) control be link very important in the water manufacturing system to coagulation.Accurately adding required dose is the key that obtains better coagulation effect, and adding dose simultaneously is the chief component of water producing cost.When adding drug overdose, water producing cost is risen also can influence the healthy of people; When dosing is not enough, can cause the off quality of water again.Because the dosing process is a very big special process of non-linear, pure hysteresis, the factor that influences the coagulation dosing amount simultaneously is a lot, as the load of raw water turbidity, water temperature, flow, basicity, conductivity, ammonia nitrogen, oxygen utilization, purifier and state etc.Therefore the control of coagulation dosing process is a difficult point on control circle always.
The dosing control method of system water has manual control and control automatically now.Manually the beaker stirring test is mainly adopted in control, method is as follows: gather several former water samples, the medicine that in each former water sample, adds varying number, after having spent a little time, quality to each water sample is assessed, and wherein adds the setting value of dose as this former water dosing control with the best sample of quality.After the quality of water changed, operating personnel need do the beaker stirring test again No. one time.The shortcoming of beaker stirring test is: process of the test needs operating personnel's intervention, and this method is not suitable for feeding back automatic control simultaneously.Automatically the general streaming current detector (SCD) that adopts of control, when former aqueous nature changes when little, the effect of SCD automatic medicament feeding system is better, but this method is relatively poor to the adaptability of different former water qualities, that is to say that the robustness of SCD automatic medicament feeding system is relatively poor.
Summary of the invention
The purpose of this invention is to provide in a kind of tap water production run and can change the device that adds the control method of dose and realize this method automatically according to different former water qualities.
The intelligence control method of dosing during the tap water that the present invention proposes is produced is the mathematical model that obtains with in the actual system water process of numerous waterworks:
Y=f (A, B, C, D, E, F)-(1) is the basis.(1) water purification adds the function that dose Y is raw water turbidity A, raw water flow B, former coolant-temperature gage C, former water pH value D, original water basicity E and settling basin delivery turbidity F in the formula.
The control method of invention is the simulating signals of taking related sensor output such as raw water turbidity, raw water flow, former coolant-temperature gage, former water pH value, original water basicity and settling basin delivery turbidity, convert digital signal input computing machine to through A/D converter, by computing machine carry out determining after the calculation process every premium on currency required add dose, calculate simultaneously control dosing metering throw of pump or operating frequency value in view of the above, this value converts simulating signal to through D/A converter and is defeated by the dosing volume pump, controls the dose that adds to former water dosing.Realization automatically changes the Based Intelligent Control that adds dose according to different former water qualities.
The device of implementing control method of the present invention comprises: with raw water turbidity, raw water flow, former coolant-temperature gage, former water pH value, original water basicity and the corresponding water turbidity sensor of settling basin delivery turbidity, flow sensor, temperature sensor, pH value sensor, basicity sensor, the output terminal of each sensor links to each other with the input end of A/D converter respectively, the output termination computing machine input end of A/D converter, the input end of the output termination D/A converter of computing machine, the output terminal of D/A converter links to each other with the dosing volume pump.
During work, the simulating signal input a/d converter of signals such as raw water turbidity, flow, temperature, pH value, basicity and the settled water turbidity output after the related sensor change is sent that comes from the scene, convert digital signal input computing machine to by A/D converter, computing machine carries out determining the required dose that adds after the calculation process, calculate simultaneously control metering throw of pump or running frequency value in view of the above, this value converts simulating signal to through D/A converter and is used to control the dose that adds to the volume pump of former water dosing.The present invention is simple in structure, and the dosing in producing tap water realizes Based Intelligent Control.
Description of drawings
Accompanying drawing is principle of compositionality figure of the present invention.
Embodiment
With reference to accompanying drawing, the device of realizing control method of the present invention comprises: the muddy water sensor 1 corresponding with raw water turbidity and settling basin delivery turbidity, 6, flow sensor 2, temperature sensor 3, pH value sensor 4, basicity sensor 5, the simulating signal input a/d converter 7 of each sensor output, convert digital signal to by A/D converter and be defeated by computing machine, here also available central processor CPU of computing machine or Programmable Logic Controller PLC, as the S7-200PLC controller, the digital signal of controlling volume pump stroke or frequency converted simulating signal to by D/A converter 9 and was defeated by volume pump 10 being used to of exporting after computing, and can finish that thus Xiang Yuanshui is changed according to former water quality automatically for the dose that adds of the volume pump of medicine.
Claims (3)
1. the intelligence control method of dosing during tap water is produced, it is characterized in that simulating signals such as raw water turbidity, raw water flow, former coolant-temperature gage, former water pH value, original water basicity and settling basin delivery turbidity with related sensor output, convert digital signal input computing machine to through A/D converter, by computing machine carry out determining after the calculation process every premium on currency required add dose, calculate simultaneously control dosing metering throw of pump or operating frequency value in view of the above, this value converts simulating signal to through D/A converter and is defeated by the dosing volume pump, controls the dose that adds to former water dosing.
2. device that is used for the described tap water adding method thereof of claim 1, it is characterized in that comprising and raw water turbidity, raw water flow, former coolant-temperature gage, former water pH value, the corresponding water turbidity sensor of original water basicity and settling basin delivery turbidity [1], [6], flow sensor [2], temperature sensor [3], pH value sensor [4], basicity sensor [5], the output terminal of each sensor links to each other with the input end of A/D converter [7] respectively, output termination computing machine [8] input end of A/D converter, the input end of the output termination D/A converter [9] of computing machine, the output terminal of D/A converter links to each other with dosing volume pump [10].
3. by the described a kind of device that is used for the described tap water adding method thereof of claim 1 of claim 2, it is characterized in that said computing machine [8] is central processor CPU or range controller PLC partially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111648 CN1378111A (en) | 2002-05-09 | 2002-05-09 | Intelligent control method and device for adding chemical in running water production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111648 CN1378111A (en) | 2002-05-09 | 2002-05-09 | Intelligent control method and device for adding chemical in running water production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1378111A true CN1378111A (en) | 2002-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02111648 Pending CN1378111A (en) | 2002-05-09 | 2002-05-09 | Intelligent control method and device for adding chemical in running water production |
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| CN (1) | CN1378111A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427175C (en) * | 2005-07-27 | 2008-10-22 | 株式会社日立制作所 | Device and method for controlling infusion of flocculating agent |
| CN100451904C (en) * | 2003-04-21 | 2009-01-14 | 张少强 | Automatic monitoring and controlling device and controlling program in use for water supply works for produce running water |
| CN101556458B (en) * | 2009-05-19 | 2011-02-09 | 江汉大学 | Automatic control algorithm for feeding vitriol in tap water by coagulation |
| CN103910422A (en) * | 2014-04-09 | 2014-07-09 | 湖南华亿电子工程有限公司 | Intelligent vanadium preparing and adding method and concentration and liquid level algorithm for vanadium preparing |
| CN104229958A (en) * | 2014-08-13 | 2014-12-24 | 上海环保工程成套有限公司 | Full-automatic intelligent dosing system |
| CN105425592A (en) * | 2016-01-05 | 2016-03-23 | 大唐环境产业集团股份有限公司 | Water processing medicine addition digital online control system |
-
2002
- 2002-05-09 CN CN 02111648 patent/CN1378111A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451904C (en) * | 2003-04-21 | 2009-01-14 | 张少强 | Automatic monitoring and controlling device and controlling program in use for water supply works for produce running water |
| CN100427175C (en) * | 2005-07-27 | 2008-10-22 | 株式会社日立制作所 | Device and method for controlling infusion of flocculating agent |
| CN101556458B (en) * | 2009-05-19 | 2011-02-09 | 江汉大学 | Automatic control algorithm for feeding vitriol in tap water by coagulation |
| CN103910422A (en) * | 2014-04-09 | 2014-07-09 | 湖南华亿电子工程有限公司 | Intelligent vanadium preparing and adding method and concentration and liquid level algorithm for vanadium preparing |
| CN103910422B (en) * | 2014-04-09 | 2015-08-12 | 湖南华亿电子工程有限公司 | A kind of intelligence joins the algorithm that alum is thrown alum method and joined alum concentration and liquid level |
| CN104229958A (en) * | 2014-08-13 | 2014-12-24 | 上海环保工程成套有限公司 | Full-automatic intelligent dosing system |
| CN104229958B (en) * | 2014-08-13 | 2016-06-01 | 上海环保工程成套有限公司 | A kind of fully-automatic intelligent medicine system |
| CN105425592A (en) * | 2016-01-05 | 2016-03-23 | 大唐环境产业集团股份有限公司 | Water processing medicine addition digital online control system |
| CN105425592B (en) * | 2016-01-05 | 2017-12-08 | 大唐环境产业集团股份有限公司 | A kind of water treatment medicine digitizes on-line control system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |