CN105675463A - Gas sample inlet for atmosphere detection equipment - Google Patents
Gas sample inlet for atmosphere detection equipment Download PDFInfo
- Publication number
- CN105675463A CN105675463A CN201610053208.9A CN201610053208A CN105675463A CN 105675463 A CN105675463 A CN 105675463A CN 201610053208 A CN201610053208 A CN 201610053208A CN 105675463 A CN105675463 A CN 105675463A
- Authority
- CN
- China
- Prior art keywords
- hollow housing
- test set
- gas sampling
- sampling mouth
- air test
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title abstract description 15
- 238000005070 sampling Methods 0.000 claims description 27
- 239000011358 absorbing material Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 8
- 241000238631 Hexapoda Species 0.000 description 5
- 238000000149 argon plasma sintering Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 241000255925 Diptera Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G01N15/075—
Abstract
The invention provides a gas sample inlet for atmosphere detection equipment. The gas sample inlet comprises a hollow casing, a shielding body and a tube, wherein a top opening and a bottom opening are formed in the hollow casing, the shielding body is inlaid in the hollow casing and stretches across a light path between the top opening and the bottom opening, one end of the tube is connected with the top opening in the hollow casing, and the other end is connected with an optical detector of the atmosphere detection equipment. The gas sample inlet is lightproof, rainproof and insect-proof, and the gas detection accuracy is improved.
Description
Technical field
The invention belongs to aeromerric moasurenont field, particularly relate to a kind of gas sampling mouth for air test set.
Background technology
The method measuring Atmospheric particulates mass concentration at present both at home and abroad mainly contains the filter membrane weighting method of off-line and online β rays method and micro oscillation balance method etc. Filter membrane weighting method is Atmospheric particulates mass concentration detection pedestal method internationally recognized at present, and its shortcoming is time-consuming, effort, poor in timeliness. β rays method and micro oscillation balance method can in real time, monitor automatically, and shortcoming is that production cost height, equipment volume are big, are not suitable for outdoor flow measurement and intensive layout. Based on the optical scatter thing sensor of mie light scattering theory owing to cost is low, low in energy consumption, the advantage such as miniaturization, maintenance be few, be recently subject to the favor of people.
Particulate matter detector based on mie light scattering theory is a light room, and its sensor is optical sensing device, in order to make detection more accurate, need to get rid of veiling glare to the interference of light room, and shorten gas circuit as far as possible.
A kind of gas sampling mouth of the prior art, directly managed by a segment and it is connected with detector, thief hatch is provided with insect protected net and anti-rain cap, but, anti-rain cap has certain interception, but shading is incomplete, and not adopting special light absorbing material due to thief hatch and pipeline, veiling glare enters light room Interference Detection with reflecting to have part scattering.
Another kind of gas sampling mouth of the prior art, after gas enters gas detection equipment by injection port, detector is arrived through one section longer gas circuit against sunshine, thus get rid of the light disturbance optical sensing device detections such as natural light, but, this kind of gas sampling implication road is longer, and may there is bending, turning, cause particulate matter in sampling gas easily to be lost, thus affect detection accuracy.
Summary of the invention
(1) technical problem solved
It is an object of the present invention to provide a kind of gas sampling mouth, for contaminant detection devices such as Atmospheric particulates, it is possible to against sunshine, rainproof, insect protected, improve gas detection accuracy simultaneously.
(2) technical scheme
The present invention provides a kind of gas sampling mouth for air test set, and wherein, air test set has detector, and gas sampling mouth comprises:
Hollow housing, it is respectively equipped with an open top and a bottom opening, and bottom opening forms a light path to open top;
Shutter body, it is embedded in hollow housing, and across light path;
Guan Ti, its one end is connected with the open top of hollow housing, and the other end is connected with detector.
(3) useful effect
The present invention has the following advantages:
1, shutter body is across the light path of bottom opening to open top, block direct projection light, and hollow housing adopts light absorbing material to make, absorb reflected light, therefore make outside light cannot enter into open top, thus fluorescence detector cannot be arrived through pipe body and improve gas detection accuracy;
2, pipe body is directly connected with detector, shortens sampling gas circuit, reduces metrical error further;
3, owing to bottom opening is downward, rainwater cannot enter injection port under gravity, has rainproof function;
4, bottom opening place is provided with filter screen, has insect protected function.
Accompanying drawing explanation
Fig. 1 is the gas sampling mouth for air test set that the embodiment of the present invention provides.
Embodiment
The present invention provides a kind of gas sampling mouth for air test set, comprise hollow housing, shutter body and pipe body, hollow housing is respectively equipped with an open top and a bottom opening, shutter body is embedded in hollow housing, and across the light path between open top and bottom opening, pipe body one end is connected with the open top of hollow housing, and the other end is connected with the fluorescence detector of air test set. The present invention can against sunshine, rainproof, insect protected, simultaneously raising gas detection accuracy.
According to one embodiment of the present invention, for the gas sampling mouth of air test set, wherein, air test set has detector, gas sampling mouth comprises: hollow housing, and it is respectively equipped with an open top and a bottom opening, and bottom opening forms a light path to open top; Shutter body, it is embedded in hollow housing, and across light path; Guan Ti, its one end is connected with the open top of hollow housing, and the other end is connected with detector. According to above-mentioned enforcement mode, gas and light enter from the bottom opening of hollow housing, wherein, owing to light is linearly propagated, the light body that can be blocked after entering hollow housing blocks, thus can not arrive hollow housing reach open top, when but gas runs into shutter body, the open top that shutter body arrives hollow housing can be walked around, so that reach the only gas of detector, and there is no outside light; After gas arrives open top, arriving detector by pipe body, detector can be fluorescence detector, and this fluorescence detector utilizes light scattering principle, the particulate matter in gas is detected, thus records particle concentration in air.
According to one embodiment of the present invention, the bottom opening place of hollow housing is provided with filter screen so that when gas enters from bottom opening, can filter out the bigger suspended substance such as mosquito, catkin.
According to one embodiment of the present invention, light is from entering after bottom opening enters hollow housing, not only the thing that may be blocked stops, it is also possible to there is luminous reflectance on hollow housing, light so also being caused to enter into detector, the hollow housing of the present invention adopts light absorbing material to make, when light propagates on hollow housing, can be absorbed by hollow housing, and luminous reflectance can not occur, further increase the function that light stops.
According to one embodiment of the present invention, hollow housing and described pipe body by integral forming, to prevent gas leakage and light leak, Interference Detection.
According to one embodiment of the present invention, hollow housing can make various shape, such as hollow ball, hollow cubic body etc., it is contemplated that to the circulation performance of gas, it may be preferred that hollow housing can adopt hollow ball. Accordingly, shutter body can also make various shape, such as spheroid, cubes etc., is spheroid, it is contemplated that to the circulation performance of gas, it may be preferred that shutter body can adopt spheroid.
According to one embodiment of the present invention, Guan Tiwei directly manages, and gas circuit can be avoided so longer, and there is not bending, turning, thus can not cause particle loss in sampling gas.
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Fig. 1 is the gas sampling mouth for air test set that the embodiment of the present invention provides, as shown in Figure 1, gas sampling mouth is ball overlaping structure, is made up of outer hollow upper and lower opening spheroid and inner complete sphere, and the outside downward opening diameter of spheroid is less than inner ball diameter. Gas sampling mouth adopts light absorbing material once-forming, and outside surface does not have gap, and outward appearance is rendered as spherical substantially. The lower openings of outside spheroid is gas inlet, is provided with filter screen, has insect protected function; Upper opening connects the through optical sensing device of gas circuit. Cover globosity allows gas to enter sensor from ring spherical voids, and stops light direct projection optics sensor, and light absorbing material can effectively prevent reflected light from entering optical sensing device. Gas, from thief hatch bottom, enters thief hatch through filter screen, and the bigger suspended substance such as mosquito, catkin is stopped with outside filter screen. After air-flow enters thief hatch, entered by global shape gap the straight pipe connecting spheroid and fluorescence detector laggard enter fluorescence detector. Light enters thief hatch from thief hatch irradiated, and direct projection light is stopped after being radiated at inner ball, and scattered light is all absorbed after arriving the inner any position of thief hatch, cannot produce reflected light and enter fluorescence detector, thus realize function against sunshine. Due to thief hatch, Open Side Down, so rainwater cannot enter thief hatch under gravity, makes thief hatch have rainproof function.
Above-described specific embodiment; the object of the present invention, technical scheme and useful effect have been further described; it is it should be understood that; the foregoing is only specific embodiments of the invention; it is not limited to the present invention; within the spirit and principles in the present invention all, any amendment of making, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
- For a gas sampling mouth for air test set, wherein, 1. described air test set has detector, it is characterised in that, gas sampling mouth comprises:Hollow housing, it is respectively equipped with an open top and a bottom opening, and described bottom opening forms a light path to described open top;Shutter body, it is embedded in described hollow housing, and across described light path;Guan Ti, its one end is connected with the open top of described hollow housing, and the other end is connected with described detector.
- 2. the gas sampling mouth for air test set according to claim 1, it is characterised in that, the bottom opening place of described hollow housing is provided with a filter screen.
- 3. the gas sampling mouth for air test set according to claim 1, it is characterised in that, described hollow housing adopts light absorbing material to make.
- 4. the gas sampling mouth for air test set according to claim 1, it is characterised in that, described hollow housing and described pipe body by integral forming.
- 5. the gas sampling mouth for air test set according to claim 1, it is characterised in that, described hollow housing is a hollow ball.
- 6. the gas sampling mouth for air test set according to claim 1, it is characterised in that, described shutter body is a spheroid.
- 7. the gas sampling mouth for air test set according to claim 1, it is characterised in that, described Guan Tiwei directly manages.
- 8. the gas sampling mouth for air test set according to claim 1, it is characterised in that, described detector is fluorescence detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053208.9A CN105675463B (en) | 2016-01-27 | 2016-01-27 | Gas sample inlet for atmosphere detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610053208.9A CN105675463B (en) | 2016-01-27 | 2016-01-27 | Gas sample inlet for atmosphere detection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105675463A true CN105675463A (en) | 2016-06-15 |
| CN105675463B CN105675463B (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610053208.9A Active CN105675463B (en) | 2016-01-27 | 2016-01-27 | Gas sample inlet for atmosphere detection equipment |
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| Country | Link |
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| CN (1) | CN105675463B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305178A (en) * | 2016-04-20 | 2017-10-31 | 华邦电子股份有限公司 | Particle sensing device further and the electronic equipment with particle sensing device further |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401793A (en) * | 2010-09-14 | 2012-04-04 | 精工爱普生株式会社 | Optical device unit and detection apparatus |
| CN102401794A (en) * | 2010-09-14 | 2012-04-04 | 精工爱普生株式会社 | Optical device unit and detection apparatus |
| CN104165826A (en) * | 2013-05-17 | 2014-11-26 | 阿自倍尔株式会社 | Particle detecting device and particle detecting method |
| CN205352903U (en) * | 2016-01-27 | 2016-06-29 | 北京市环境保护监测中心 | A gaseous introduction port for atmosphere check out test set |
-
2016
- 2016-01-27 CN CN201610053208.9A patent/CN105675463B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401793A (en) * | 2010-09-14 | 2012-04-04 | 精工爱普生株式会社 | Optical device unit and detection apparatus |
| CN102401794A (en) * | 2010-09-14 | 2012-04-04 | 精工爱普生株式会社 | Optical device unit and detection apparatus |
| CN104165826A (en) * | 2013-05-17 | 2014-11-26 | 阿自倍尔株式会社 | Particle detecting device and particle detecting method |
| CN205352903U (en) * | 2016-01-27 | 2016-06-29 | 北京市环境保护监测中心 | A gaseous introduction port for atmosphere check out test set |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107305178A (en) * | 2016-04-20 | 2017-10-31 | 华邦电子股份有限公司 | Particle sensing device further and the electronic equipment with particle sensing device further |
| CN107305178B (en) * | 2016-04-20 | 2022-04-05 | 华邦电子股份有限公司 | Particle sensing device and electronic apparatus having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105675463B (en) | 2019-12-10 |
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