CN209264552U - Ozone concentration measurement device - Google Patents
Ozone concentration measurement device Download PDFInfo
- Publication number
- CN209264552U CN209264552U CN201822094376.XU CN201822094376U CN209264552U CN 209264552 U CN209264552 U CN 209264552U CN 201822094376 U CN201822094376 U CN 201822094376U CN 209264552 U CN209264552 U CN 209264552U
- Authority
- CN
- China
- Prior art keywords
- ozone concentration
- photometer
- ozone
- measurement device
- concentration measurement
- 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.)
- Active
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of ozone concentration measurement devices, the detection device includes air intake, the air intake connection first enters gas branch and second and enters gas branch, described first enters gas branch and second enters the entrance that gas branch is connected to branch gating component, and second, which enters gas branch road, is provided with ozone filter；It further comprise photometer and data processor, the outlet of branch gating component is connected to photometer, and the photometer uses ultraviolet continuous spectrum light source；The data processor obtains the luminosity information of photometer acquisition and calculates ozone concentration.The device volume is small, it is light-weight, be convenient for carrying, be pollution-free, be lightweight portable ambient air ozone analytical equipment.
Description
Technical field
The present invention relates to gas detection technology fields, and in particular to a kind of ozone concentration measurement device.
Background technique
Ozone is the minimum gas that chemical property is active in atmosphere, has strong oxidizing property, greenhouse effects and UV absorption
Characteristic is of great significance and influences on weather, ecology, environment etc..Ozone is also mostly important two in urban environment air
One of secondary pollutant is one of main reasons of contamination phenomenons such as acid rain, photochemical fog, atmospheric visibility decline, can also be right
Human body causes serious harm.Ozone is one of the required test item of National Environmental air quality monitoring.Ozone had become in recent years
The primary air pollutants in Some Domestic city, ozone monitoring have received significant attention.It needs to increase Monitoring frequency and density
Ensure enough monitoring data, fixed monitoring station and mobile monitoring vehicle since point is very little, has been unable to meet quickly
The monitoring requirements of growth, ozonograph that is small in size, light-weight, can detecting whenever and wherever possible will solve this problem.
Mainly there is the 49i type of Thermo company, the U.S. for the ozone analyzer of surrounding air ozone monitoring on the market at present
Ozone analyzer and the T400 type ozone analyzer of API company, the U.S. etc..These products largely use at home, have become state
The canonical reference product of interior surrounding air ozone monitoring.This surrounding air ozone analyzer is cabinet-type, is required for city
Electricity, it is sufficiently bulky, it can not portable use.The said goods are all made of Ultraviolet Photometric Method, and Ultraviolet Photometric Method is also China's surrounding air
One of standard method of Determination of ozone.
Ultraviolet Photometric Method is that have the characteristic absorbed strongly in ultraviolet spectral coverage using ozone molecule, fixed in conjunction with Beer-Lambert
The ozone concentration calculated in tested gas is restrained, has the characteristics that measure simple, quick, strong antijamming capability.It is now widely available
The surrounding air ozone analyzer based on Ultraviolet Photometric Method have the following problems:
Using low pressure mercury lamp as light source, spectral line of the mercury lamp for Determination of ozone is single, poor anti jamming capability；The mercury lamp service life
It is shorter, it needs to be replaced frequently；Contain heavy metal Hg in mercury lamp, discarded post-processing is improper to be caused environment seriously to pollute.
Complicated air sample gas pretreatment is needed, when air humidity is higher, is tested air gas circuit and reference gas circuit humidity not
Unanimously, large error can be generated.
Volume and power consumption are larger, and need stable working environment to guarantee the accuracy of detection, commonly use and supervise with fixed
On survey station or mobile monitoring car, cannot individually it use outdoors.
Summary of the invention
The present invention for the above technical problems, proposes strong antijamming capability, energy conservation and environmental protection, small in size, weight
Gently, ozone concentration measurement device easy to use.
To achieve the goals above, the present invention provides the following technical scheme that
A kind of ozone concentration measurement device, including air intake, the air intake connection first enter gas branch and second and enter gas
Branch, described first enters gas branch and second enters the entrance that gas branch is connected to branch gating component, and second, which enters gas branch road, sets
It is equipped with ozone filter；It further comprise photometer and data processor, the outlet of branch gating component is connected to photometer, institute
Photometer is stated using ultraviolet continuous spectrum light source；The data processor obtains the luminosity information of photometer acquisition and calculates ozone
Concentration.
Preferably, the processor includes:
Data acquisition unit: for acquiring the luminosity information of photometer measurement；
Calibration coefficient computing unit: photometer calibration coefficient, institute are calculated for the luminosity information based on standard ozone gas
State the ozone gas that standard ozone gas is known concentration；
Ozone concentration computing unit: for based under test gas luminosity information and calibration coefficient computing unit calculate determine
Coefficient is marked, ozone concentration is calculated.
Preferably, the ozone concentration measurement device further comprises temperature sensor and pressure sensor, temperature sensing
Device and pressure sensor are connected to photometer, for measuring the temperature and pressure in photometer.
Preferably, the ozone concentration measurement device further comprises air pump, and the air pump is connected to photometric outlet.
Preferably, the ozone concentration measurement device further comprises flowmeter, setting photometer outlet and air pump it
Between gas circuit on.
Preferably, the air pump is membrane pump.
Preferably, the ozone concentration measurement device further comprises that gas is arranged between branch gating component and photometer
The wetting balance pipe of road.
Preferably, the wetting balance pipe is membrane type osmos tube.
Preferably, branch gating component is three-way magnetic valve.
Preferably, the light source is ultraviolet LED lamp or xenon flash lamp.
Compared with prior art, the advantages and positive effects of the present invention are:
(1) deep ultraviolet LED light source or xenon flash light source are used, spectral bandwidth is greater than 10nm, and spectral line is wider, anti-interference energy
Power is stronger；Light source life is long, can be by modulation or pulsed operation, and the service life was at 10 years or more；Deep ultraviolet LED and xenon flash lamp
Without containing heavy metal Hg, environmental pollution not will cause.
(2) wetting balance pipe is devised in gas circuit, humidity and environment are empty before guarantee two-way gas enters photometer gas chamber
Air humidity degree reaches unanimously, and will not have differences because of the humidity of two-way gas leads to air chamber wall reflectivity changes, further results in
Luminous energy and equivalent optical path change, and generate biggish measurement error.
(3) small in size, light-weight, it is convenient for carrying；It is low in energy consumption, lithium battery power supply can be used, without other auxiliary facilities
Demand.It can be realized the purpose detected whenever and wherever possible.For lightweight portable ambient air ozone analyzer.
Detailed description of the invention
Fig. 1 is ozone concentration assay device structures figure of the present invention；
Fig. 2 photometer schematic diagram；
Fig. 3 is characteristic absorption spectrum schematic diagram of the ozone in ultraviolet spectral coverage；
Fig. 4 is processor structure schematic diagram；
Fig. 5 is ozone concentration measuring method flow chart of the present invention.
100- ozone concentration measurement device, 101- second branch, the 102- first branch, 103- ozone filter, 104- tri-
Three-way electromagnetic valve, 105- wetting balance device, 106- photometer, 1061- light source, 1062- gas chamber, 1063- detector, 107- photometer
Entrance, the outlet of 108- photometer, 109- temperature sensor, 110- pressure sensor, 111- flowmeter, 112- air pump.
Specific embodiment
Hereinafter, a specific embodiment of the invention is further described in conjunction with attached drawing.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features.
Present invention firstly provides a kind of ozone concentration measurement devices, can be used for the measurement of ozone concentration.
A kind of ozone concentration measurement device 100, structural reference Fig. 1, including air intake, air intake is for accessing Standard Gases
Body.Air intake connection first enters gas branch 102 and second and enters gas branch 101, and first, which enters gas branch 102 and second, enters gas branch
101 are connected to the entrance of branch gating component, and second enters to be provided with ozone filter 103 on gas branch 101；It further comprise light
Degree meter 106 and data processor, the outlet of branch gating component are connected to photometer entrance 107.Wherein, branch gating component is used
In the connection of the control first branch 102 or second branch 101 and photometer 106, and simultaneously, the only gas access of branch all the way
Photometer 106.In the present embodiment, branch gating component uses three-way magnetic valve 104, can be placed in the position of gas circuit one-to-two
Or two-in-one position, that is, in the front end or rear end of ozone filter 103, using PTFE valve body.Pass through the control of solenoid valve
System, so that passing through ozone filter and not passing through the gas circuit alternate communication of ozone filter.
Tracheae in above-mentioned gas circuit is using the material for not adsorbing ozone, such as PTFE, PFA, FEP, PVDF, quartz glass material
Material.Second enters equipped with the particle with ozone reaction in ozone filter 103 on gas branch 101, such as manganese dioxide, potassium iodide
Deng, can only eliminate ozone ingredient, without influence sample gas in other compositions.
Fig. 3 show ozone in the characteristic absorption spectrum of visible spectrum, the peak value of characteristic absorption in 254nm or so, by
In ozone there is stronger absorption between 230nm~280nm, can choose and carry out the photometry inspection of ozone in this spectral coverage
It surveys, maximum signal-to-noise ratio can be obtained in this way, reduce interference, improve detection accuracy.
Based on this, the photometer 106 used to ozone analyzer of the present invention is designed as follows.Ozone provided by the invention
The photometer 106 of concentration measurement apparatus uses ultraviolet continuous spectrum light source using the photometer；Photometric structure is at least wrapped
Include light source, gas absorption cell and detector, structural reference Fig. 2.For example, can be using ultraviolet LED lamp, xenon flash lamp or as light
Source；The way of realization of two kinds of photometers 106 is specifically provided.The first way of realization: optional light source includes that central wavelength is 254nm
The deep ultraviolet LED controlled or the xenon flash lamp with optical filter, the silicon photoelectric diode that detector is enhanced using ultraviolet response, such as
Fruit is using deep ultraviolet LED as light source, and since deep ultraviolet light spectrum sheet is as narrow-band spectrum, detector front end does not have to plus band logical filter
Mating plate.Second of way of realization: using xenon flash light source, since it is wide spectrum, needs to add narrow band filter by operating wave
Long scope limitation eliminates unwanted luminous energy between 240-260, and narrow band filter can be placed on light source light-emitting window or visit
It surveys at the window of device.The light path of gas chamber about 500mm, guarantee have sufficiently fast flushing frequency.
Data processor obtains the luminosity information of photometer acquisition, and calculates generation ozone concentration.Processor specifically includes:
Data acquisition unit: for acquiring the luminosity information of photometer measurement；
Calibration coefficient computing unit: photometer calibration coefficient, institute are calculated for the luminosity information based on standard ozone gas
State the ozone gas that standard ozone gas is known concentration；
Ozone concentration computing unit: for based under test gas luminosity information and calibration coefficient computing unit calculate determine
Coefficient is marked, ozone concentration is calculated.
In order to guarantee that more accurate measurement accuracy, ozone concentration measurement device further comprise temperature sensor 109 and pressure
Force snesor 110, temperature sensor 109 and pressure sensor 110 are connected to photometer 106, for measuring in photometer 106
Temperature and pressure, for calculating ozone concentration.The calculation method of this ozone concentration and method provided by the invention belong to redundancy
Algorithm belongs to calculation method well known in the prior art, and details are not described herein again.
In order to guarantee fluency of the gas by analyzer, ozone concentration measurement device further comprises air pump 112, air pump
112 are connected to photometer outlet 108.It is membrane pump that air pump 112, which uses, the gas between the outlet of photometer 106 and air pump 112
Road setting flowmeter 111, it is orifice metre that flowmeter 111, which uses, for controlling flow in gas circuit, it is ensured that flow is steady
It is fixed.
In order to further decrease influence of the gas humidity to measurement accuracy, ozone concentration measurement device further comprises setting
Wetting balance pipe 105 between branch gating component and photometer 106 in gas circuit.Above-mentioned wetting balance pipe 106 is a kind of film
Formula osmos tube can only be exchanged the humidity inside and outside the tube wall that makes by hydrone hydroxy and reach equilibrium state, other gases not by
It influences.
Above-mentioned ozone concentration measurement device has commercial power interface and lithium battery interface, and mains-supplied can be used, can also be used
Lithium battery power supply allows to use whenever and wherever possible.Since lithium battery power supply can be used, the portable of instrument can further improve
Property, it is not limited by the use of condition of power supply.
The present invention further provides a kind of ozone concentration measuring methods.
A kind of ozone concentration measuring method, using above-mentioned ozone concentration measurement device, comprising the following steps:
(1) calibration coefficient is calculated
Select known concentration CkOzone as calibrating gas, since behaviour of ozone is more flexible, the ozone of surrounding air
It is extremely easy in decomposition, ozone standard gas is manufactured by ozone generator, is decomposed in order to prevent, and typically scene is sent out with ozone
Raw device, which manufactures, just directly to be used.
Ozone generator outlet is connected into gas access, ozone standard gas is entered into gas branch through first and is passed through photometer,
Processor acquires the first light intensity signal Ik, calibrating gas is further entered into gas branch through second and passes through photometer, processor acquisition
Second light intensity signal Ik0；
The concentration of gas and the relationship of light intensity signal are as follows:
It calculates and obtains calibration coefficient:
(2) ozone concentration is calculated
By surrounding air to be measured through the first branch by photometer, processor acquires third light intensity signal I, by ring to be measured
For border air through second branch by photometer, processor acquires the 4th light intensity signal I0, the gas by second branch is to go
Except the gas after ozone；
Calculate ozone concentration:
Ozone concentration measurement device provided by the invention, light source do not contain heavy metal Hg, not will cause environmental pollution, the dress
It sets small in size, light-weight, is convenient for carrying；It is low in energy consumption, lithium battery power supply can be used.Ozone concentration measurement side provided by the invention
Method carries out the measurement of ozone concentration, does not need complicated gas advance sample processing, and method is simple and efficient.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (10)
1. a kind of ozone concentration measurement device, it is characterised in that: including air intake, air intake connection first enter gas branch and
Second enters gas branch, and described first enters gas branch and second enters the entrance that gas branch is connected to branch gating component, and second enters gas
Branch road is provided with ozone filter；It further comprise photometer and data processor, the outlet of branch gating component is connected to
Photometer, the photometer use ultraviolet continuous spectrum light source；The data processor obtains the luminosity information of photometer acquisition
And calculate ozone concentration.
2. ozone concentration measurement device as described in claim 1, it is characterised in that: the processor includes:
Data acquisition unit: for acquiring the luminosity information of photometer measurement；
Calibration coefficient computing unit: photometer calibration coefficient, the mark are calculated for the luminosity information based on standard ozone gas
Quasi- ozone gas is the ozone gas of known concentration；
Ozone concentration computing unit: the calibration system for luminosity information and the calculating of calibration coefficient computing unit based under test gas
Number calculates ozone concentration.
3. ozone concentration measurement device as described in claim 1, it is characterised in that: the ozone concentration measurement device is further
Including temperature sensor and pressure sensor, temperature sensor and pressure sensor are connected to photometer, for measuring photometer
Interior temperature and pressure.
4. ozone concentration measurement device as described in claim 1, it is characterised in that: the ozone concentration measurement device is further
Including air pump, the air pump is connected to photometric outlet.
5. ozone concentration measurement device as claimed in claim 4, it is characterised in that: the ozone concentration measurement device is further
Including flowmeter, it is arranged in the gas circuit between photometer outlet and air pump.
6. ozone concentration measurement device as claimed in claim 4, it is characterised in that: the air pump is membrane pump.
7. ozone concentration measurement device as described in claim 1, it is characterised in that: the ozone concentration measurement device is further
Including the wetting balance pipe between branch gating component and photometer in gas circuit is arranged in.
8. ozone concentration measurement device as claimed in claim 7, it is characterised in that: the wetting balance pipe is membrane type infiltration
Pipe.
9. ozone concentration measurement device as described in claim 1, it is characterised in that: branch gating component is three-way magnetic valve.
10. ozone concentration measurement device as described in claim 1, it is characterised in that: the light source is ultraviolet LED lamp or pulse
Xenon lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822094376.XU CN209264552U (en) | 2018-12-13 | 2018-12-13 | Ozone concentration measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822094376.XU CN209264552U (en) | 2018-12-13 | 2018-12-13 | Ozone concentration measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209264552U true CN209264552U (en) | 2019-08-16 |
Family
ID=67563711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822094376.XU Active CN209264552U (en) | 2018-12-13 | 2018-12-13 | Ozone concentration measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209264552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374536A (en) * | 2018-12-13 | 2019-02-22 | 青岛海纳光电环保有限公司 | Ozone concentration measurement device and method |
-
2018
- 2018-12-13 CN CN201822094376.XU patent/CN209264552U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374536A (en) * | 2018-12-13 | 2019-02-22 | 青岛海纳光电环保有限公司 | Ozone concentration measurement device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110146460A (en) | A kind of highly sensitive more gas concentration detection systems and control method with thermostatic control function | |
| CN105424631B (en) | A kind of hypersensitivity nitrogen oxides measuring system based on UV, visible light wave band absorption spectrum | |
| CN102445437B (en) | Method and device for measuring turbidity | |
| CN102183492B (en) | Three-band integrated atmospheric aerosol particle scattering coefficient measuring instrument and measuring method | |
| CN202974860U (en) | High-precision infrared gas detection module | |
| CN101526472B (en) | Intelligent ultraviolet gas analyzer | |
| CN103616334A (en) | Cavity ring down aerosol extinction spectrometer | |
| Liu et al. | In situ monitoring of atmospheric nitrous acid based on multi-pumping flow system and liquid waveguide capillary cell | |
| CN105510266A (en) | Harmful gas monitoring system based on infrared absorption spectrum | |
| CN109374536A (en) | Ozone concentration measurement device and method | |
| CN106872366A (en) | A kind of low concentration ozone concentration detector of single light source | |
| CN205607852U (en) | Miniaturized linear light journey methane gas sensor based on infrared absorption principle | |
| CN111650141B (en) | Water quality monitoring method, apparatus and system based on multi-wavelength absorbance | |
| CN209264552U (en) | Ozone concentration measurement device | |
| CN209542439U (en) | High-concentrated ozone analyzer | |
| CN103674915A (en) | Fluorescence reaction detector and sulfur dioxide automatic monitoring device using same | |
| CN110006833B (en) | Method for analyzing and detecting content of nitrogen oxides in air | |
| CN218098858U (en) | Multi-range optical gas chamber for laser gas detector calibration | |
| CN203643340U (en) | Fluorescence reaction detector | |
| CN215415023U (en) | Novel low-power consumption infrared gas sensor | |
| CN109490213A (en) | Miniature UV absorption atmospheric ozone sensor | |
| CN2921827Y (en) | Portable photometer for measuring low concentration ozone | |
| CN212622245U (en) | Online detection device for content of ultralow-concentration ammonia gas | |
| CN109781639B (en) | Device and method for simultaneously detecting sulfur dioxide and nitrogen dioxide in ambient air | |
| CN209432689U (en) | Carbonomonoxide concentration detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 379 Hedong Road, Qingdao High-tech Zone, Shandong Province Patentee after: Qingdao Laoying Haina Photoelectric Environmental Protection Group Co., Ltd. Address before: High tech Zone of Shandong Province, Qingdao City, 266109 East Road No. 379 Patentee before: Qingdao Haina Guangdian Environmental Protection Co., Ltd. |
|
| CP03 | Change of name, title or address |