CN206906250U - A kind of CODCrIn-line analyzer - Google Patents
A kind of CODCrIn-line analyzer Download PDFInfo
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- CN206906250U CN206906250U CN201720258673.6U CN201720258673U CN206906250U CN 206906250 U CN206906250 U CN 206906250U CN 201720258673 U CN201720258673 U CN 201720258673U CN 206906250 U CN206906250 U CN 206906250U
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Abstract
The utility model discloses a kind of CODCrIn-line analyzer, it is related to a kind of monitoring device.It includes peristaltic pump, exhaust-valve, sampling valve island, resolution colorimetric system, pressure valve, resolution valve, mixing valve, peristaltic pump, mixing valve are connected by pipeline with sampling valve island, one end of resolution colorimetric system is connected with pressure valve, the other end of resolution colorimetric system is also associated with exhaust-valve by clearing up valve and pipeline communication to sampling valve island, sampling valve island.The utility model cost of investment is low, can monitor the COD in various water bodys automatically unattendedly for a long timeCr, operational reliability is high, good in economic efficiency, practical, use easy to spread.
Description
Technical field
The utility model relates to a kind of monitoring device, and in particular to a kind of CODCrIn-line analyzer.
Background technology
CODCrIt is to use potassium bichromate (K2Cr2O7) chemical oxygen consumption (COC) that is determined as oxidant, i.e. bichromate refers to
Number, also known as bichromate oxidisability or dichromate oxidizability.Excessive potassium bichromate solution and sulfuric acid are added in water sample, is heated
And promoting oxidation reaction perfect as catalyst with silver sulfate, superfluous potassium bichromate, for indicator, uses ferrous sulfate with ferrous spirit
Then the conversion of potassium bichromate consumption is to be represented with the milligram number of every liter of water consume oxygen by titer residual titration.This method degree of oxidation is high,
Available for serious pollution industrial wastewater is analyzed, to illustrate waste water situation polluted by organic matter.
At present, increasingly strict environmental regulation makes the process equipment of sewage disposal must be more complicated, and it is qualified to can be only achieved
Discharge standard, with the improvement of people's living standards, making requirement of the national correlation department to surface water, drinking water quality continuous
Improve, and stricter is required to the automaticity of equipment, therefore, it is necessary to suitable in-line analyzer is installed, continuous prison
The parameter relevant with biodegradable, purification water making, optimization processing efficiency are surveyed, and allows people to drink and trusts water.And prior art
Universal simply several orthogonal analyzers are pieced together of detection mode combine, this design philosophy not only mistake
When, it is difficult to competent increasingly strict laws and regulations requirement, operational reliability cannot be guaranteed, and to automatic water quality monitoring system and sewage
The economy of factory has considerable influence, based on this, designs a kind of new CODCrIn-line analyzer or necessary.
Utility model content
In view of the shortcomings of the prior art, the purpose of the utility model is to be to provide a kind of CODCrIn-line analyzer,
Simple in construction, reasonable in design, cost of investment is low, can monitor the COD in various water bodys automatically unattendedly for a long timeCr, operation
Reliability is high, good in economic efficiency, practical, use easy to spread.
To achieve these goals, the utility model is to realize by the following technical solutions：A kind of CODCrOnline point
Analyzer, including peristaltic pump, exhaust-valve, sampling valve island, resolution colorimetric system, pressure valve, resolution valve, mixing valve, peristaltic pump, mixing
Valve is connected by pipeline with sampling valve island, and the one end for clearing up colorimetric system is connected with pressure valve, clears up the other end of colorimetric system
Exhaust-valve is also associated with by clearing up valve and pipeline communication to sampling valve island, sampling valve island.
Preferably, it is provided with water sample, silver sulfate, potassium bichromate, mercuric sulfate, standard liquid and sky on described sampling valve island
White standby totally six reagent interface tubes.
Preferably, described peristaltic pump, exhaust-valve, sampling valve island, resolution colorimetric system, pressure valve, resolution valve, mixing
Valve is installed in analyzer shell, and analyzer shell is built-in with the standard that multichannel facilitates the monitoring instruments such as incoming stream gauge, pH meters
Interface, Remote remote measurement can be achieved.
Preferably, described standard interface is connected with Remote telemetering equipment.
Preferably, described analyzer shell is also built-in with various communication interfaces, standard configuration has RS232/485,
Modbus Rut。
The beneficial effects of the utility model：The COD in various water bodys can be monitored automatically unattendedly for a long timeCr, investment
Cost is low, and operational reliability is high, no matter in performance, flexibility, or all has in reliable degree and cost of investment
Unrivaled advantage, particularly there is the occasion of particular/special requirement in automation process control aspect, it is good in economic efficiency, can be extensive
Popularization and application.
Brief description of the drawings
Describe the utility model in detail with reference to the accompanying drawings and detailed description；
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model analyzer shell；
Fig. 3 is process chart of the present utility model.
Embodiment
Technological means, creation characteristic, reached purpose and effect to realize the utility model are easy to understand, below
With reference to embodiment, the utility model is expanded on further.
Reference picture 1-3, present embodiment use following technical scheme：A kind of CODCrIn-line analyzer, including wriggle
Pump 1, exhaust-valve 2, sampling valve island 3, resolution colorimetric system 4, pressure valve 5, resolution valve 6, mixing valve 7, peristaltic pump 1, mixing valve 7 are logical
Piping is connected with sampling valve island 3, and one end of resolution colorimetric system 4 is connected with pressure valve 5, clears up the other end of colorimetric system 4
By clearing up valve 6 and pipeline communication to sampling valve island 3, sampling valve island 3 is also associated with exhaust-valve 2, and water is provided with sampling valve island 3
Sample, silver sulfate, potassium bichromate, mercuric sulfate, standard liquid and the standby totally six reagent interface tubes of blank.
It is worth noting that, described peristaltic pump 1, exhaust-valve 2, sampling valve island 3, resolution colorimetric system 4, pressure valve 5, disappear
Solution valve 6, mixing valve 7 are installed in analyzer shell 8, and analyzer shell 8 is built-in with multichannel and facilitates incoming stream gauge, pH meters etc.
The standard interface of monitoring instrument, Remote remote measurement can be achieved.
The operation principle of present embodiment is：It is with corrosion-resistant and high-temperature resistant sampling valve group that reaction reagent thang-kng is quantitative
After systematic quantification, injected a sample into by resolution valve in special chemical reaction axe, reacted under conditions of constant HTHP,
Oxygen consumption organic and reducing substances in water sample are by the Cr in reactor6+It is reduced to Cr3+, quickly cooled down, cooled down after reaction
After carry out photoelectric colorimetry, measure Cr6+Decrement, the calibration curve that the value and standard sample that sample is measured measure is compared,
The COD value in sample can be tried to achieve.
The detection range of this analyzer：Theoretical oxidation can be quickly reached in the presence of 175 DEG C of high temperature and strong oxidizer
The 95% to 100% of value.Volatile organic matter, pyrimidine and the very competent compound of relative antioxidant then must be abundant with oxidant
It can be just fully oxidized after contact a period of time.
The detecting step of present embodiment：(1) analyzer extracts fresh sample clean sample feeding pipe automatically before testing
Road, measurement test tube and resolution test tube, it is ensured that sample is representative；
(2) brand-new peristaltic pump technology sample introduction is used, peristaltic pump does not contact directly with sample, reagent, the volume of sample introduction
By a visual measuring system control；
(3) same with sample introduction condition, reagent (mercuric sulfate, potassium bichromate, sulfuric acid include catalyst) sucks also by peristaltic pump,
Also the volume of suction is controlled by visual measuring system；
(4) the mode biased sample and reagent by blowing traditional；
(5) after instrument closes the valve at the both ends of resolution test tube, by resistive heater by sample and the mixed solution of reagent
It is rapidly heated to 175 DEG C；
(6) measuring system automatically controls digestion time according to the setting value of instrument parameter；
(7) after solution cooling, solution is discharged by peristaltic pump；
(8) analyzer is automatically calibrated and cleaned to instrument by the prover time and scavenging period pre-seted；
(9) instrument corrects measured value automatically.
The technical specification of present embodiment：
(1) measuring method：Based on standard GB/T 11914-89：Water quality-COD determination dichromate titration
(2) measurement range：(20-1500)mg/L COD
(3) error of indication：During >=30mg/L ,≤± 10%；During ＜ 30mg/L ,≤± 5mg/L
(4) it is repeated：≤3%
(5) digestion time：Arbitrarily selected according to actual conditions
(6) measurement interval：Any selection is continuous, also can trigger instrument by MODBUS, RS232, switching signal
(7) calibrate：Automatically the time interval calibrated can artificial selection (duration calibrated automatically is about 50 minutes)
(8) user safeguards：Monthly only need the maintenance time of 1 hour
(9) reagent service life：Continuous measurement, digestion time be 30 minutes, correction time is at intervals of the feelings of 24 hours
Under condition, often covering reagent can use 1 month
(10) input：Up to 10 road relay signal collections, can increase AI analog acquisition units as needed
(11) export：2 road analog current outputs：(4-20) mA, the Ω of maximum load 500
RS232 global function data signals, support MODBUS RTU
(12) size：The mm of the mm of wide × high × deep 500 mm × 750 × 370
(13) quality：About 35 kg (not including reagent)
(14) normal running conditions：Environment temperature: (5-40)℃
Power requirement:(220 ± 22) VAC, (50-60) Hz
Without significantly vibrations and electromagnetic interference, direct sunlight is avoided
Present embodiment is suitable to waste water of the measurement COD in the range of (20-1500) mg/L, contains suspension
The water sample of thing can just measure after need to homogenizing, and the method is applied to the water sample that chloride concentration is less than 5g/L, analyzer
Technical requirements with rapid changepl. never-ending changes and improvements can constantly be met, more flexible engineering change (EC) scheme can be provided, stable and reliable operation, had
Wide market application foreground.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (4)
- A kind of 1. CODCrIn-line analyzer, it is characterised in that including peristaltic pump (1), exhaust-valve (2), sampling valve island (3), resolution Colorimetric system (4), pressure valve (5), resolution valve (6), mixing valve (7), peristaltic pump (1), mixing valve (7) pass through pipeline and sampling valve Island (3) connects, and one end of resolution colorimetric system (4) is connected with pressure valve (5), and the other end of resolution colorimetric system (4) is by disappearing Solution valve (6) and pipeline communication to sampling valve island (3), sampling valve island (3) are also associated with exhaust-valve (2).
- A kind of 2. COD according to claim 1CrIn-line analyzer, it is characterised in that set on described sampling valve island (3) It is equipped with water sample, silver sulfate, potassium bichromate, mercuric sulfate, standard liquid and the standby totally six reagent interface tubes of blank.
- A kind of 3. COD according to claim 1CrIn-line analyzer, it is characterised in that described peristaltic pump (1), exhaust-valve (2), sampling valve island (3), resolution colorimetric system (4), pressure valve (5), resolution valve (6), mixing valve (7) are installed on analyzer shell (8) in.
- A kind of 4. COD according to claim 3CrIn-line analyzer, it is characterised in that described analyzer shell (8) is also It is built-in with various communication interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720258673.6U CN206906250U (en) | 2017-03-17 | 2017-03-17 | A kind of CODCrIn-line analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720258673.6U CN206906250U (en) | 2017-03-17 | 2017-03-17 | A kind of CODCrIn-line analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206906250U true CN206906250U (en) | 2018-01-19 |
Family
ID=61294807
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720258673.6U Active CN206906250U (en) | 2017-03-17 | 2017-03-17 | A kind of CODCrIn-line analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206906250U (en) |
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2017
- 2017-03-17 CN CN201720258673.6U patent/CN206906250U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201111 Address after: Schaffhausen, Switzerland Patentee after: Xylem Europe Ltd. Address before: 100176 Beijing City, Daxing District branch of Beijing economic and Technological Development Zone No. 99 fourteen Street 18 Building 1 room 2101 Patentee before: XYLEM ANALYTICS INSTRUMENT (BEIJING) Co.,Ltd. |