CN205538687U - NO and NO2 pollutant measuring device - Google Patents
NO and NO2 pollutant measuring device Download PDFInfo
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- CN205538687U CN205538687U CN201620077704.3U CN201620077704U CN205538687U CN 205538687 U CN205538687 U CN 205538687U CN 201620077704 U CN201620077704 U CN 201620077704U CN 205538687 U CN205538687 U CN 205538687U
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- sample gas
- cld
- pipeline
- gas cylinder
- air inlet
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Abstract
The utility model provides a NO and NO2 pollutant measuring device, including awaiting measuring sample gas air inlet pipeline, CLD chemiluminescence analysis appearance and standard sample gas cylinder aggregate, await measuring sample gas air inlet pipeline and standard sample gas cylinder aggregate respectively and be equipped with the heat -resisting communicating pipe of heat -preservation type between the CLD chemiluminescence analysis appearance, standard sample gas cylinder aggregate is connected with controlling means and standard sample gas cylinder aggregate includes empty gas sample gas cylinder, the nitrogen gas sample gas cylinder that is used for the demarcation at zero point that is used as working gas, the nitric oxide sample gas bottle that is used for the range designation, heat filter, heat pump, overflow valve, fourth air -vent valve, flowmeter and temperature transducer has set gradually on the pipeline that CLD chemiluminescence analysis appearance and the sample gas air inlet pipeline that awaits measuring are connected. The utility model has the advantages of reasonable design, the security performance is good, has realized the precision measurement to the concentration of NO and NO2 pollutant through accurate demarcation the to standard gas and await measuring gas temperature and flow of control and zero point.
Description
Technical field
The utility model relates to the measurement apparatus field of gaseous contaminant, especially relates to a kind of NO and NO2
Contaminant measurement device.
Background technology
Atmosphere pollution has total suspended particles, floating dust, sulfur dioxide, carbon monoxide, photochemical oxidant
(NO and NO is referred mainly to nitrogen oxides2) etc., wherein nitric oxide (NO) can damage nervous centralis
System and the sex change causing hemoglobin, and nitrogen dioxide (NO2) lung damage can be caused even to cause lung
Oedema, therefore to NO and NO2Detect in real time thus formulate Corresponding Countermeasures and just seem the most necessary,
Chemoluminescence method is a kind of NO and NO2Common detection method.
The cardinal principle of chemoluminescence method is NO and ozone O3In reative cell, reaction generates excitation state
NO2, work as NO2Can release photon when ground state is returned in transition, optical-electrical converter absorbs photon and produces photoelectric current,
The concentration of NO is i.e. can get by the mensuration of photo-current intensity.Here O3Conventional producing method be by sky
Aspiration enters in ozone generator, the O in air2It is raw that effect at high electric field pulse issues biochemical reaction
Become O3.If NO to be detected2Concentration, can be first by NO2Change into NO, conventional conversion side
Method be the metal with specific active degree at high temperature with NO2Reaction makes it be reduced to NO.Specifically, photoelectricity
Concentration ρ of photo-current intensity I and NO of converter detection is by calculating formulaCome
Mutually conversion, wherein T is reaction chamber temperature, and g is O under chemical reaction adequate condition3Ratio with total flow
Value, V is chamber volume, trIt is the average time of reaction indoor gas stop, TrIt is NO and O3Anti-
Between Ying Shi, γ be a mass color electric transducer receive light efficiency and relevant with sample gas reaction temperature and pressure
Amount, in the case of described each intermediate quantity is certain, I to ρ is directly proportional, thus measures I by calibrating gas
Nitrogen oxides in gas to be measured can be calculated by the light intensity that gas to be measured excites with after the ratio of ρ
Concentration.Understood the temperature of sample gas to be measured by the principle of chemoluminescence method and enter flow and the standard of reative cell
The difference of the value of gas is the factor affecting the GN 2 oxide concentration monitoring accuracy to be measured, and existing market
On the temperature of sample gas to be measured of nitrogen oxides pollution thing measurement apparatus multipair entrance reative cell and sample gas
Flow is not monitored and controlled, and will certainly affect the certainty of measurement of nitrous oxides concentration.Additionally, due to mesh
Front air seriously polluted, inevitably contain composition to be measured or does in the air that Zero calibration is selected
Disturbing gas, this also can affect the measured value of nitrous oxides concentration in sample gas to be measured.
Summary of the invention
Main purpose of the present utility model is to enter existing nitrogen oxides measurement apparatus for existing issue
Row improves provides a kind of NO and NO2The accurate measurement apparatus of measurement of concetration of pollutant.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of NO and NO2Dirty
Dye thing measurement apparatus, including: sample gas air inlet pipeline to be measured, CLD chemiluminescent analyzer and standard sample gas
Bottle aggregate, described sample gas air inlet pipeline to be measured and standard sample gas cylinder aggregate respectively with CLD chemiluminescence
Being communicated with pipeline between analyzer, described standard sample gas cylinder aggregate connects control device；Standard sample
Gas cylinder aggregate includes air (AIR) sample gas bottle, nitrogen (N2) sample gas bottle, nitric oxide (NO)
Sample gas bottle, the pipeline that described air sample gas bottle connects with CLD chemiluminescent analyzer is provided with the first pressure regulation
Valve, the pipeline that described nitrogen sample gas bottle connects with CLD chemiluminescent analyzer is provided with the second pressure regulator valve,
The pipeline that described nitric oxide sample gas bottle connects with CLD chemiluminescent analyzer is provided with the 3rd pressure regulator valve；
It is disposed with hot mistake on the pipeline that described CLD chemiluminescent analyzer is connected with sample gas air inlet pipeline to be measured
Filter, heat pump, overflow valve, the 4th pressure regulator valve, flowmeter and temperature transducer.
Further, described CLD chemiluminescent analyzer uses hot type chemoluminescence method analysis of nitrogen oxide
Instrument.
Further, described sample gas air inlet pipeline to be measured and standard sample gas cylinder aggregate are sent out with CLD chemistry respectively
The connecting pipe that light analyzer is connected is thermal-insulation heat-resistant type pipeline.
The utility model has the advantage that and provides the benefit that: reasonable in design, and security performance is good,
By the accurate calibration of calibrating gas and gas temperature to be measured and the control of flow and zero point is achieved
To NO and NO2The accurate measurement of the concentration of pollutant.
Accompanying drawing explanation
Fig. 1 is NO and NO2The structural representation of contaminant measurement device.
In figure: 1 is sample gas air inlet pipeline to be measured, and 2 is CLD chemiluminescent analyzer, and 3 is standard sample gas
Bottle aggregate, 4 is to control device, and 5 is the first pressure regulator valve, and 6 is the second pressure regulator valve, and 7 is the 3rd pressure regulation
Valve, 8 is heat filter, and 9 is heat pump, and 10 is overflow valve, and 11 is the 4th pressure regulator valve, and 12 is flowmeter,
13 is temperature transducer.
Detailed description of the invention
Below in conjunction with the accompanying drawings specific embodiment of the utility model is elaborated.
As it can be seen, the utility model provides a kind of NO and NO2Contaminant measurement device, including to be measured
Sample gas air inlet pipeline 1, CLD chemiluminescent analyzer 2 and standard sample gas cylinder aggregate 3, described in treat test sample
Gas air inlet pipeline 1 and standard sample gas cylinder aggregate 3 respectively and are provided with between CLD chemiluminescent analyzer 2
Thermal-insulation heat-resistant type connecting pipe, described CLD chemiluminescent analyzer 2 uses hot type chemoluminescence method nitrogen
Oxide analysis instrument, described standard sample gas cylinder aggregate 3 connects control device 4 described in control device 4
It is used for controlling temperature and the flow of the gas of standard sample gas cylinder output.
Standard sample gas cylinder aggregate 3 includes air (AIR) sample gas bottle, nitrogen (N2) sample gas bottle, one
Nitrogen oxide (NO) sample gas bottle, the pipeline that described air sample gas bottle connects with CLD chemiluminescent analyzer 2
It is provided with the first pressure regulator valve 5, the pipeline that described nitrogen sample gas bottle connects with CLD chemiluminescent analyzer 2
Being provided with the second pressure regulator valve 6, described nitric oxide sample gas bottle connects with CLD chemiluminescent analyzer 2
Pipeline is provided with the 3rd pressure regulator valve 7.Described air sample gas bottle is for defeated to CLD chemiluminescent analyzer 2
Working gas is sent to produce ozone, described nitrogen sample with the device that will pass through in CLD chemiluminescent analyzer 2
Gas cylinder is for carrying zero gas as before work used by Zero calibration to CLD chemiluminescent analyzer 2, described
Nitric oxide sample gas bottle is for carrying range marked gas to CLD chemiluminescent analyzer 2.Highly purified
Nitrogen can accurate calibration zero point as zero gas.
Set successively on the pipeline that described CLD chemiluminescent analyzer 2 is connected with sample gas air inlet pipeline 1 to be measured
It is equipped with heat filter 8, heat pump 9, overflow valve the 10, the 4th pressure regulator valve 11, flowmeter 12 and thermometric to pass
Sensor 13.Described first pressure regulator valve the 5, second pressure regulator valve the 6, the 3rd pressure regulator valve 7 and the 4th pressure regulator valve 11
For the gas of place pipeline being carried out pressure regulation use, the overflow valve that described sample gas air inlet pipeline to be measured is arranged
10 are used for pressure release plays safety effect.
Described NO and NO2During contaminant measurement device work, first pass through control device 4 and control nitrogen sample
Gas cylinder returns to zero to CLD chemiluminescent analyzer 2 supplying nitrogen, then controls nitric oxide sample gas bottle
Carry nitric oxide to CLD chemiluminescent analyzer 2 and carry out range regulation, and record control device
The delivery temperature of standard nitric oxide sample gas shown on 4 and flow.Then sample gas to be measured is passed through gas
Pump is to control the flow value input that device 4 is recorded from sample gas air inlet pipeline 1, and sample gas is first through hot mistake
Filter 8 filters, and filters out particulate matter and the interference gas measuring nitrogen oxides, then adds through heat pump 9
Heat, the temperature of sample gas can be adjusted and reach controlling what device 4 was recorded by the power adjusting heat pump 9
Temperature value.By being the analog value of range calibration gas to gas temperature to be measured and Flow-rate adjustment, thus protect
Demonstrate,prove the raising of the precision of measured value.
Above an embodiment of the present utility model is described in detail, but described content has been only this reality
With novel preferred embodiment, it is impossible to be considered for limiting practical range of the present utility model.Fan Yiben
Impartial change that utility model application scope is made and improvement etc., all should still belong to of the present utility model specially
Within profit covering scope.
Claims (3)
1. NO and NO2Contaminant measurement device, including sample gas air inlet pipeline (1) to be measured, CLD
Chemiluminescent analyzer (2) and standard sample gas cylinder aggregate (3), described sample gas air inlet pipeline (1) to be measured
With standard sample gas cylinder aggregate (3) respectively and is communicated with pipe between CLD chemiluminescent analyzer (2)
Road, it is characterised in that: described standard sample gas cylinder aggregate (3) connects control device (4)；
Standard sample gas cylinder aggregate (3) includes air (AIR) sample gas bottle, nitrogen (N2) sample gas bottle,
Nitric oxide (NO) sample gas bottle, described air sample gas bottle connects with CLD chemiluminescent analyzer (2)
Pipeline be provided with the first pressure regulator valve (5), described nitrogen sample gas bottle and CLD chemiluminescent analyzer (2)
The pipeline of connection is provided with the second pressure regulator valve (6), described nitric oxide sample gas bottle and CLD chemiluminescence
The pipeline that analyzer (2) connects is provided with the 3rd pressure regulator valve (7)；
On the pipeline that described CLD chemiluminescent analyzer (2) is connected with sample gas air inlet pipeline (1) to be measured
Be disposed with heat filter (8), heat pump (9), overflow valve (10), the 4th pressure regulator valve (11),
Flowmeter (12) and temperature transducer (13).
NO and NO the most according to claim 12Contaminant measurement device, it is characterised in that: institute
State CLD chemiluminescent analyzer (2) and use hot type chemoluminescence method nitrogen-oxide analyzer,.
NO and NO the most according to claim 12Contaminant measurement device, it is characterised in that: institute
State sample gas air inlet pipeline (1) to be measured and standard sample gas cylinder aggregate (3) divides with CLD chemiluminescence respectively
The connecting pipe that analyzer (2) is connected is thermal-insulation heat-resistant type pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077704.3U CN205538687U (en) | 2016-01-27 | 2016-01-27 | NO and NO2 pollutant measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077704.3U CN205538687U (en) | 2016-01-27 | 2016-01-27 | NO and NO2 pollutant measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538687U true CN205538687U (en) | 2016-08-31 |
Family
ID=56769980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620077704.3U Expired - Fee Related CN205538687U (en) | 2016-01-27 | 2016-01-27 | NO and NO2 pollutant measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697740A (en) * | 2020-12-10 | 2021-04-23 | 山东省科学院海洋仪器仪表研究所 | Detection system and detection method for dissolved methane in surface seawater |
-
2016
- 2016-01-27 CN CN201620077704.3U patent/CN205538687U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112697740A (en) * | 2020-12-10 | 2021-04-23 | 山东省科学院海洋仪器仪表研究所 | Detection system and detection method for dissolved methane in surface seawater |
| CN112697740B (en) * | 2020-12-10 | 2022-09-23 | 山东省科学院海洋仪器仪表研究所 | Detection system and detection method for dissolved methane in surface seawater |
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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: 20160831 Termination date: 20170127 |