CN203981592U - A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method - Google Patents
A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method Download PDFInfo
- Publication number
- CN203981592U CN203981592U CN201420366377.4U CN201420366377U CN203981592U CN 203981592 U CN203981592 U CN 203981592U CN 201420366377 U CN201420366377 U CN 201420366377U CN 203981592 U CN203981592 U CN 203981592U
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- CN
- China
- Prior art keywords
- air intake
- shell
- reaction chamber
- intake opening
- reaction
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- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
Survey a reaction unit for nitrous oxides concentration for chemoluminescence method, by photoelectric detector, shell, reaction chamber, gas outlet, composite air intake pipe, O
3air intake opening, NO air intake opening, heating rod, pressure detector composition, is characterized in that, shell is cylindrical shape, and inside is reaction chamber, and reaction chamber is provided with heating rod around, and shell one end connects composite air intake pipe, O
3air intake opening, NO air intake opening, shell another end connects photoelectric detector, is provided with gas outlet and pressure detector at photoelectric detector and shell connecting portion.The utility model and prior art ratio, NO and O
3pass into reaction chamber by composite air intake pipe and according to the accurate flow control of 1: 10, and NO is in center, O
3be uniformly distributed around, the design of this structure has fully ensured NO sample gas and O
3can there is efficiently rapidly at reaction chamber the NO of chemical reaction generation excited state
2 *, the sensitivity that has effectively improved instrument.Be applicable to the concentration of the oxides of nitrogen in atmosphere to carry out real time on-line monitoring.
Description
Technical field
The utility model relates to a kind of gas reaction device, is a kind of gas reaction device of surveying nitrous oxides concentration for chemoluminescence method.Be applied in environmental protection industry (epi), the concentration of the oxides of nitrogen in atmosphere is carried out to real time on-line monitoring.
Background technology
At present, in similar chemoluminescence method nitrogen-oxide analyzer,, the factor of impact analysis instrument detection sensitivity is a lot, reaction chamber temperature, reaction chamber pressure, O
3concentration, O
3with NO sample airshed etc., wherein O
3cmpletely whether be directly connected to NO with NO sample airshed reacts.Traditional O
3can not ensure NO molecule and O with NO sample gas mixing arrangement majority
3molecule comprehensively rapidly efficient chemical reaction generates NO
2 *thereby, the sensitivity of impact analysis instrument and detectability.
Summary of the invention
In order to overcome NO molecule and O
3molecule comprehensively rapidly efficient chemical reaction generates NO
2 *phenomenon, the purpose of this utility model be design a kind of gas reaction device for chemoluminescence method, can accurately control O by composite air intake tubular construction
3with NO sample airshed and blending ratio.
The technical solution of the utility model is that a kind of reaction unit for chemoluminescence method survey nitrous oxides concentration is by photoelectric detector (1), shell (2), reaction chamber (3), gas outlet (4), composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), heating rod (8), pressure detector (9) composition, shell (2) is cylindrical shape, inside is reaction chamber (3), reaction chamber (3) is provided with heating rod (8) around, and shell (2) one end connects composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), shell (2) another end connects photoelectric detector (1), is provided with gas outlet (4) and pressure detector (9) at photoelectric detector (1) and shell connecting portion.
NO and O under uniform temperature certain pressure condition
3fully mix generation chemical reaction with certain proportion at reaction chamber, photoelectric detector detects the photon number producing and then calculates NO
xconcentration.
A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method as above, NO air intake opening (7) and O
3there is chemical reaction at reaction chamber (3) by composite air intake pipe (5) in air intake opening (6), the photon number of generation is detected and calculated by photoelectric detector (1), thereby records NO according to a certain percentage
xconcentration.
A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method as above, under uniform temperature certain pressure condition, NO sample gas and O
3respectively by NO air intake opening (7) and O
3air intake opening (6) enters reaction chamber (3) with the ratio of 1: 10, and then guarantees that NO is able to abundant reaction.
The beneficial effects of the utility model are effectively to have ensured NO sample gas and O
3flow control, simultaneously can ensure NO molecule and O
3molecule is comprehensive NO of chemical reaction generation efficiently rapidly in reaction chamber
2 *.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is a kind of external structure figure that surveys the reaction unit of nitrous oxides concentration for chemoluminescence method of the utility model
Fig. 2 is a kind of internal structural map of surveying the reaction unit of nitrous oxides concentration for chemoluminescence method of the utility model
Fig. 3 is a kind of composite air intake pipe organigram of surveying the reaction unit of nitrous oxides concentration for chemoluminescence method of the utility model
1-photoelectric detection part in figure, 2-shell, 3-reaction chamber, 4-gas outlet, 5-composite air intake pipe, 6-O
3air intake opening, 7-NO air intake opening, 8-heating rod, 9-pressure detector
Embodiment
As seen from Figure 1, a kind of reaction unit for chemoluminescence method survey nitrous oxides concentration is by photoelectric detector (1), shell (2), reaction chamber (3), gas outlet (4), composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), heating rod (8), pressure detector (9) composition, shell (2) is cylindrical shape, inside is reaction chamber (3), reaction chamber (3) is provided with heating rod (8) around, and shell (2) one end connects composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), shell (2) another end connects photoelectric detector (1), is provided with gas outlet (4) and pressure detector (9) at photoelectric detector (1) and shell connecting portion.
Measuring the device of nitrous oxides concentration for chemoluminescence method, the factors such as pressure, temperature, chamber volume and the gas flow ratio of chemiluminescence intensity and reaction chamber are relevant.In order to obtain stable luminous intensity, control the gas flow of reaction chamber (3) and the pressure of pressure detector (5) control reaction chamber (3) by composite air intake pipe (7), take heating rod (8) to carry out thermostatic control to reduce temperature impact to whole reaction air chamber simultaneously.Certain when reaction chamber temperature, gas flow is certain, and when the NO of reaction fully reacts with ozone, the NO concentration in sample gas is directly proportional to chemiluminescence intensity.
Composite air intake pipe (5) is by O
3air intake opening (6) and NO air intake opening (7) composition.O
3enter into 10 cylindrical holes that compound inlet pipe (5) is evenly distributed to diameter and is 2mm, NO is entered into and is prolonged the cylindrical hole that the diameter of axis direction is 2mm by NO air intake opening (7), and this structure has ensured O
3with the blending ratio of NO sample gas be 10: 1, and can ensure O
3can rapidly efficiently there is chemical reaction and generate at reaction chamber (3) NO of excited state with NO sample gas
2 *, the photon number producing in this process is detected by photoelectric detection part (1) and carries out follow-up signal processing, thereby obtains the concentration value of NO.
Claims (1)
1. survey a reaction unit for nitrous oxides concentration for chemoluminescence method, by photoelectric detector (1), shell (2), reaction chamber (3), gas outlet (4), composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), heating rod (8), pressure detector (9) composition, it is characterized in that, shell (2) is cylindrical shape, inside is reaction chamber (3), reaction chamber (3) is provided with heating rod (8) around, and shell (2) one end connects composite air intake pipe (5), O
3air intake opening (6), NO air intake opening (7), shell (2) another end connects photoelectric detector (1), is provided with gas outlet (4) and pressure detector (9) at photoelectric detector (1) and shell connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366377.4U CN203981592U (en) | 2014-07-04 | 2014-07-04 | A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366377.4U CN203981592U (en) | 2014-07-04 | 2014-07-04 | A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981592U true CN203981592U (en) | 2014-12-03 |
Family
ID=51979023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420366377.4U Expired - Fee Related CN203981592U (en) | 2014-07-04 | 2014-07-04 | A kind of reaction unit of surveying nitrous oxides concentration for chemoluminescence method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203981592U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053437A (en) * | 2016-05-05 | 2016-10-26 | 苏州市江海通讯发展实业有限公司 | A device detecting NO through chemiluminescence and a detecting method thereof |
| CN111308025A (en) * | 2020-04-20 | 2020-06-19 | 淄博青禾检测科技有限公司 | Wide-range nitric oxide sensor system |
-
2014
- 2014-07-04 CN CN201420366377.4U patent/CN203981592U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053437A (en) * | 2016-05-05 | 2016-10-26 | 苏州市江海通讯发展实业有限公司 | A device detecting NO through chemiluminescence and a detecting method thereof |
| CN111308025A (en) * | 2020-04-20 | 2020-06-19 | 淄博青禾检测科技有限公司 | Wide-range nitric oxide sensor system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20190704 |