CN209280680U - A kind of direct-reading instrument of on-site measurement nitrogen oxides - Google Patents
A kind of direct-reading instrument of on-site measurement nitrogen oxides Download PDFInfo
- Publication number
- CN209280680U CN209280680U CN201822158939.7U CN201822158939U CN209280680U CN 209280680 U CN209280680 U CN 209280680U CN 201822158939 U CN201822158939 U CN 201822158939U CN 209280680 U CN209280680 U CN 209280680U
- Authority
- CN
- China
- Prior art keywords
- colorimetric
- pipe
- air inlet
- port valve
- gas outlet
- 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.)
- Expired - Fee Related
Links
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000005259 measurement Methods 0.000 title claims abstract description 14
- 241000197194 Bulla Species 0.000 claims abstract description 32
- 208000002352 blister Diseases 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 25
- 230000003647 oxidation Effects 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- -1 air inlet pipe Chemical class 0.000 abstract 1
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses a kind of direct-reading instrument of on-site measurement nitrogen oxides, avoids result error caused by measuring because of transport nitrous oxides concentration；A kind of technical solution of use are as follows: direct-reading instrument of on-site measurement nitrogen oxides, including air inlet pipe, oxidation tube, bulla pipe, colorimetric container, colorimetric component, aspiration pump and two-port valve, one end insertion oxidation bottom of the tube of the air inlet pipe, the top of the oxidation tube is provided with gas outlet, the gas outlet is connected on the first air inlet of two-port valve by pipeline, first gas outlet of the two-port valve is connected to by pipeline with the first blow vent of bulla pipe, second blow vent of the bulla pipe is connected to by pipeline with the second air inlet of two-port valve, second gas outlet of the two-port valve passes through pipeline and colorimetric reservoir, the colorimetric outside of containers is provided with colorimetric component, the aspiration pump is arranged in colorimetric upper vessel portion, and it is connected to colorimetric upper vessel portion；The utility model can be widely applied to environmental testing.
Description
Technical field
A kind of direct-reading instrument of on-site measurement nitrogen oxides of the utility model, belongs to technical field of environmental detection.
Background technique
Nitrogen dioxide in air is absorbed by the absorbing liquid in concatenated first absorption bottle and reacts generation pink occasionally
Nitrogen dyestuff.Nitric oxide in air is not reacted with absorbing liquid, is oxidized to two by acid permanganate soln when passing through oxidation tube
Nitrogen oxide is absorbed by the absorbing liquid in concatenated second absorption bottle and reacts the pink azo-dye of generation.The azo of generation
Absorbance of the dyestuff at wavelength 540nm is directly proportional to the content of nitrogen dioxide.First and second absorption bottle are measured respectively
The absorbance of middle sample, calculates nitrogen dioxide and nitric oxide production mass concentration in two absorption bottles, and sum of the two is nitrogen oxygen
The mass concentration of compound (in terms of nitrogen dioxide).
The general scene of daily survey nitrous oxides concentration acquires nitrogen oxides by absorbing liquid, is then shipped back laboratory, leads to
Go out result after crossing spectrophotometric colo.This method needs for absorbing liquid to be shipped back laboratory testing, and the time is longer, and inhales
Receiving liquid need to be kept in dark place, and scene is often protected from light that condition is limited, and leading to absorbing liquid, the reaction was continued, so that it is inclined measurement result occur
Difference.
Utility model content
The utility model overcomes the shortcomings of the prior art, provides a kind of direct-reading instrument of on-site measurement nitrogen oxides
Device avoids result error caused by measuring because of transport nitrous oxides concentration.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted in the utility model are as follows: on-site measurement nitrogen oxides
Direct-reading instrument, including air inlet pipe, oxidation tube, bulla pipe, colorimetric container, colorimetric component, aspiration pump and two-port valve, the air inlet
One end insertion oxidation bottom of the tube of pipe, the top of the oxidation tube are provided with gas outlet, and the gas outlet is connected to by pipeline
On first air inlet of two-port valve, the first gas outlet of the two-port valve is connected to by pipeline with the first blow vent of bulla pipe,
Second blow vent of the bulla pipe is connected to by pipeline with the second air inlet of two-port valve, the second gas outlet of the two-port valve
By pipeline and colorimetric reservoir, the colorimetric outside of containers is provided with colorimetric component, and the aspiration pump is arranged than color tolerance
Device top, and be connected to colorimetric upper vessel portion.
First blow vent of the bulla pipe is located at the bottom of bulla pipe, and the second blow vent of the bulla pipe is located at bulla
The top of pipe.
It is provided with knob on the two-port valve, the knob is for switching the first air inlet/first gas outlet channel and the
Two such as air inlet/second gas outlet channels.
The volume of the colorimetric container is greater than the volume of bulla pipe, prevents from sucking liquid in aspiration pump.
The utility model has the beneficial effect that the utility model realizes sampling and detection one compared with prior art
Secondary completion substantially reduces out the time of result, since scene is detected immediately, result caused by reducing during transportation
Variation, so as to so that result is more acurrate.And since sampling pipe is frangible, once transportational process has damage, needs to resurvey, need
It hurries back and forth back and forth, on-site test just avoids such case well.
Detailed description of the invention
The utility model is described further with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1 be air inlet pipe, 2 be oxidation tube, 3 be bulla pipe, 4 be colorimetric container, 5 be colorimetric component, 6 be aspiration pump,
7 be two-port valve.
Specific embodiment
As shown in Figure 1, a kind of direct-reading instrument of on-site measurement nitrogen oxides of the utility model, including air inlet pipe 1, oxidation tube
2,2 bottom of oxidation tube is inserted into one end of bulla pipe 3, colorimetric container 4, colorimetric component 5, aspiration pump 6 and two-port valve 7, the air inlet pipe 1
Portion, the top of the oxidation tube 2 are provided with gas outlet, and the gas outlet is connected to the first air inlet of two-port valve 7 by pipeline
On, the first gas outlet of the two-port valve 7 is connected to by pipeline with the first blow vent of bulla pipe 3, and the second of the bulla pipe 3
Blow vent is connected to by pipeline with the second air inlet of two-port valve 7, and the second gas outlet of the two-port valve 7 passes through pipeline and colorimetric
Container 4 is connected to, and colorimetric component 5 is provided on the outside of the colorimetric container 4, and the aspiration pump 6 is arranged on 4 top of colorimetric container, and
It is connected to 4 top of colorimetric container.
First blow vent of the bulla pipe 3 is located at the bottom of bulla pipe 3, and the second blow vent of the bulla pipe 3 is located at
The top of bulla pipe 3.
It is provided with knob on the two-port valve 7, the knob is for switching the first air inlet/first gas outlet channel and the
Two such as air inlet/second gas outlet channels.
The volume of the colorimetric container 4 is greater than the volume of bulla pipe 3, prevents from sucking liquid in aspiration pump 6.
Mini colorimetric is equipped and is evacuated pump installation and is integrated in instrument by the utility model, controls gas production and ratio by knob
Color state, so that collection in worksite and detection are realized, so that scene carries out the measurement of nitrogen oxides.
The flow of aspiration pump 6 is adjustable in the utility model.
In the utility model for ease of description, the air inlet port of air inlet pipe 1 is set as A mouthfuls, it hereinafter referred to as A mouthfuls, will
The gas outlet of 2 top of oxidation tube setting is set as B mouthfuls, hereinafter referred to as B mouthfuls, the first blow vent of bulla pipe 3 and second is ventilated
Mouthful, C mouthfuls and D mouthfuls are respectively set as, abbreviation C mouthfuls and D mouthfuls individually below.
The course of work of the utility model: when knob is adjusted to sample, at this moment air-flow enters from A mouthfuls, is aoxidized by oxidation tube
Enter C mouthfuls by B mouthfuls and inner conduit afterwards, by bulla pipe, air-flow is discharged from D mouthfuls to aspiration pump, nitrogen oxides and bulla pipe
In absorbing liquid carry out reaction and change colour, after reaching a certain amount of, at this moment adjusting knob, air-flow changes from D mouthfuls of entrance, absorbing liquid
C mouthfuls are flowed to gas, and is inhaled into colorimetric container, colorimetric component carries out colorimetric, is shown as nitrous oxides concentration value.Compare colour cell
Part volume is greater than bulla pipe volume, therefore its liquid level is unlikely to that liquid is caused to enter in aspiration pump, damages aspiration pump.Colorimetric
Terminate, the liquid in colorimetric component can release from below, then change pure water cleaning several times, next time may continue to colorimetric.
The utility model realizes sampling and the primary completion of detection, substantially reduces out the time of result, since scene is vertical
It is detected, results change caused by reducing during transportation, so as to so that result is more acurrate.And due to sampling pipe
It is frangible, once transportational process has damage, need to resurvey, needs to hurry back and forth back and forth, on-site test just avoids such case well.
The embodiments of the utility model have been described in detail above with reference to the accompanying drawings, but the utility model is not limited to
Embodiment is stated, within the knowledge of a person skilled in the art, the utility model aims can also not departed from
Under the premise of various changes can be made.
Claims (4)
1. a kind of direct-reading instrument of on-site measurement nitrogen oxides, which is characterized in that including air inlet pipe (1), oxidation tube (2), bulla
(3), colorimetric container (4), colorimetric component (5), aspiration pump (6) and two-port valve (7) are managed, oxygen is inserted into one end of the air inlet pipe (1)
Change pipe (2) bottom, the top of the oxidation tube (2) is provided with gas outlet, and the gas outlet is connected to two-port valve (7) by pipeline
The first air inlet on, the first gas outlet of the two-port valve (7) is connected to by pipeline with the first blow vent of bulla pipe (3),
Second blow vent of the bulla pipe (3) is connected to by pipeline with the second air inlet of two-port valve (7), the two-port valve (7)
Second gas outlet is connected to by pipeline with colorimetric container (4), is provided with colorimetric component (5) on the outside of the colorimetric container (4), described
Aspiration pump (6) setting is connected on colorimetric container (4) top, and with colorimetric container (4) top.
2. a kind of direct-reading instrument of on-site measurement nitrogen oxides according to claim 1, which is characterized in that the bulla pipe
(3) the first blow vent is located at the bottom of bulla pipe (3), and the second blow vent of the bulla pipe (3) is located at the top of bulla pipe (3)
Portion.
3. a kind of direct-reading instrument of on-site measurement nitrogen oxides according to claim 1, which is characterized in that the two-port valve
(7) knob is provided on, the knob is for switching the first air inlet/first gas outlet channel and the second such as air inlet/the second
Gas outlet channel.
4. a kind of direct-reading instrument of on-site measurement nitrogen oxides according to claim 1, which is characterized in that described to compare color tolerance
The volume of device (4) is greater than the volume of bulla pipe (3), prevents from sucking liquid in aspiration pump (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822158939.7U CN209280680U (en) | 2018-12-21 | 2018-12-21 | A kind of direct-reading instrument of on-site measurement nitrogen oxides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822158939.7U CN209280680U (en) | 2018-12-21 | 2018-12-21 | A kind of direct-reading instrument of on-site measurement nitrogen oxides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209280680U true CN209280680U (en) | 2019-08-20 |
Family
ID=67612671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822158939.7U Expired - Fee Related CN209280680U (en) | 2018-12-21 | 2018-12-21 | A kind of direct-reading instrument of on-site measurement nitrogen oxides |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209280680U (en) |
-
2018
- 2018-12-21 CN CN201822158939.7U patent/CN209280680U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |