CN110186722A - Convenient for gaseous pollutant sample introduction mechanism, sampling system and the method for aircraft aerial survey - Google Patents
Convenient for gaseous pollutant sample introduction mechanism, sampling system and the method for aircraft aerial survey Download PDFInfo
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- CN110186722A CN110186722A CN201910533469.4A CN201910533469A CN110186722A CN 110186722 A CN110186722 A CN 110186722A CN 201910533469 A CN201910533469 A CN 201910533469A CN 110186722 A CN110186722 A CN 110186722A
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- 238000005070 sampling Methods 0.000 title claims abstract description 129
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 42
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 42
- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000004809 Teflon Substances 0.000 claims abstract description 9
- 229920006362 Teflon® Polymers 0.000 claims abstract description 9
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims description 13
- 238000006884 silylation reaction Methods 0.000 claims description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 32
- 229910001220 stainless steel Inorganic materials 0.000 description 13
- 238000012544 monitoring process Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 102100033121 Transcription factor 21 Human genes 0.000 description 6
- 101710119687 Transcription factor 21 Proteins 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000002444 silanisation Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
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- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
-
- 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
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2273—Atmospheric sampling
- G01N2001/2279—Atmospheric sampling high altitude, e.g. rockets, balloons
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Abstract
The invention discloses the gaseous pollutant sample introduction mechanisms for being convenient for aircraft aerial survey, sampling system and method, it solves sample introduction mechanism in the prior art, and structure is complicated, not readily portable problem, it is small with sampling loss, whole portable beneficial effect, its scheme is as follows: a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey, including L-shaped sampling pipe, the side of sampling pipe is equipped with suction nozzle, the entrance side size of suction nozzle is less than suction nozzle outlet side size, suction nozzle is structure as a whole with sampling pipe, the other side of sampling pipe can pass through aircraft aperture and be arranged, and sampling pipe can pass through the fixed plate that the side setting of aircraft can be connect with interior of aircraft, the side that sampling pipe can pass through aircraft is connect with connecting tube, connecting tube is equipped with several connectors, the two sides arc transition of sampling pipe connects, connecting tube is teflon pipe.
Description
Technical field
The present invention relates to atmospheric environment sampling and analysis technical fields, more particularly to the gaseous contamination for being convenient for aircraft aerial survey
Object sample introduction mechanism, sampling system and method.
Background technique
There are a variety of gaseous pollutants in atmosphere, and complicated component, concentration are changeable, not only direct harmful to human body health and
Ecological environment can also undergo the physical chemistry of a series of complex or reaction to generate the secondary pollutions such as fine particle and ozone, right
Human health and ecological environment cause to seriously affect.For the origin cause of formation, physical and chemical process, health and the environment shadow for understanding atmosphere pollution
Sound, control strategy etc. need the time space distribution to main atmosphere pollution, transmission and conversion etc. measure, study.
Ground monitoring system in China's is more perfect at present, establishes environmental air quality monitoring station, and shape in more than 300 a cities of the whole nation
At the air quality monitoring network network in the whole nation, real-time release and prediction work to emphasis regional air quality are realized, however side
Interlayer and the state of air pollution in the above space, the vertical distribution of pollutant and conveying are unclear, are badly in need of carrying out correlative study
Work.
A kind of important means of the aircraft aerial survey as the state of air pollution for studying high-altitude, also faces many difficulties at present
And technical bottleneck.When carrying out aircraft aerial survey experiment, aircraft flight fast speed is easy to cause that air-flow velocity is fast, air pressure reduces
And it is unstable, influence aircraft aerial survey sampling.The currently existing gaseous pollutant sampling device for aircraft aerial survey, which exists, to be permitted
More problems are difficult to solve, such as: sampling device construction is complicated, not readily portable and loads and unloads, and fixed form is complex, needs
Aircraft is transformed, when sampling is difficult to keep horizontally forward, may will affect flight safety of aircraft, etc..
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of gaseous pollutant sample introduction machines convenient for aircraft aerial survey
Structure has structure simple, easy to use, the few feature of sample loss, can satisfy in aircraft aerial survey experiment to gaseous pollutant
Efficient, accurate acquisition.
A kind of concrete scheme of the gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey is as follows:
A kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey, including L-shaped sampling pipe, the side of sampling pipe are equipped with
The entrance side size of suction nozzle, suction nozzle is less than suction nozzle outlet side size, and suction nozzle is structure as a whole with sampling pipe, sampling pipe
The other side can pass through aircraft aperture be arranged, and sampling pipe can pass through aircraft side setting can be connect with interior of aircraft
Fixed plate, the side that sampling pipe can pass through aircraft connect with connecting tube, and connecting tube is equipped with several connectors, the two of sampling pipe
The connection of side arc transition.
Above-mentioned sampling device, the side of sampling pipe can stretch to interior of aircraft, and the other side forms the entrance of gas, in this way
Be conducive to that sampling pipe is protected to be not broken, gas flow rate is significantly reduced under the setting effect of suction nozzle, samples by L shape
The side of the setting of pipe, sampling pipe can be vertical with aircraft bottom plate, the other side can remain with aircraft central axes keeping parallelism, have
Effect guarantees the service life of sampling pipe, and whole-sample loss is less, and overall structure is simple, and it is right in aircraft aerial survey experiment to can satisfy
The highly effective gathering of gaseous pollutant.
Further, the sampling inside pipe wall is equipped with silylation layer, and active gases and sampling pipe can be reduced or avoided in this way
Inner wall occur suction-operated or chemical reaction caused by under test gas component loss, ingredient change and sampling pipe damage
It is bad.Silanization treatment improves the accuracy of measurement result, extends the service life of sampling pipe.
Further, the length of the sampling pipe side and connecting tube 20-70mm long compared with the sampling pipe other side, is convenient in this way
To the Quick Acquisition of gaseous pollutant.
Further, the shape of the suction nozzle is taper, and the sampling pipe is fixed on the outside of the suction nozzle and is used for
Guidance air enters the pod of sampling pipe, by the setting of taper suction nozzle, can make the gas flow rate entered in sampling pipe
It is effectively reduced, meets air monitoring instrument monitoring standard, reduce too fast flow velocity degree of injury caused by instrument.
Further, the length of the pod is longer than the length setting of the suction nozzle, and the internal diameter of pod is greater than
Equal to the outer diameter of the suction nozzle, suction nozzle and the sampling pipe are structure as a whole setting.
Further, one end of the pod and the sampling pipe pass through screw thread or welded connecting.
Further, in order to reduce the influence to gas flow rate, the pod is diversion pipe, and diversion pipe side is cylinder
Shape, and diversion pipe and the sampling pipe connecting side are truncated conical shape；
Further, the fixed board size is greater than the size of the sampling pipe, and fixed plate is structure as a whole with sampling pipe,
After fixed plate and aircraft are fixed, convenient for the stability of sampling pipe setting, fixed plate is the plate of plectane or other shapes, fixed plate
Equipped with bolt hole, fixed plate is reliably connected by bolt and aircraft inner bottom plating, avoids making aircraft biggish change.
Further, the suction nozzle entrance side outer diameter is 1-1.5mm, inlet side inside diameter 0.5mm-0.8mm.
Further, the connecting tube is teflon pipe, and teflon pipe has the spies such as chemical property is stable, suction-operated is weak
Point is not easy to react with active gases, avoids line loss, ensure that the reliability of measurement result；Sampling pipe material is polishing
316 stainless steels, 316 stainless steels can have preferable patience under, high-altitude adverse circumstances that air-flow velocity is fast unstable in air pressure,
316 stainless steels are a kind of austenitic stainless steels, are added to Mo (molybdenum) element, improve the corrosion resistance and heat-resisting quantity of metal,
The service life that sampling pipe is substantially increased using 316 stainless steels, saves cost.
For overcome the deficiencies in the prior art, the present invention also provides a kind of gaseous pollutant samplings convenient for aircraft aerial survey
System, including a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey, each connector of connecting tube with it is identical
Or different analysis instrument connection.
Further, by piping connection between the connector and the analysis instrument, which is similarly Teflon
Pipe, pipeline are equipped with vacuum pump and adjustable flow meter, adjust the flow velocity and flow of acquired gaseous sample, guarantee the operation peace of instrument
Entirely.
For overcome the deficiencies in the prior art, the present invention also provides a kind of gaseous pollutant samplings convenient for aircraft aerial survey
Method so effectively carries out gaseous pollutant using a kind of gaseous pollutant sampling system convenient for aircraft aerial survey
Sampling, sample rate is fast, and sample effect is good.
Compared with prior art, the beneficial effects of the present invention are:
1) present invention is arranged by L shape sampling pipe, and sampling pipe can pass through aircraft aperture and be arranged, i.e., one end of sampling pipe extends
To interior of aircraft, under the setting effect of fixed plate, be able to maintain sampling pipe horizontally forward, be conducive to protect sampling pipe not by
It fractures, guarantees the service life of sampling mechanism.
2) material of the sampling pipe positioned at aircraft exterior of the invention is the stainless steel of polishing, and the machinery for improving pipeline is strong
Degree and corrosion resistance.
3) stainless steel sampling pipe of the invention has carried out silanization treatment, has been reduced or avoided in active gases and sampling pipe
The suction-operated and chemical reaction of wall, ensure that the accuracy of measurement result and the service life of sampling pipe.
4) present invention can be effectively reduced the gas flow rate entered in sampling pipe, be accorded with by the setting of suction nozzle
Air monitoring instrument monitoring standard is closed, too fast flow velocity degree of injury caused by instrument is reduced.
5) present invention will not make excessive change to aircraft, not will cause the safety of flight by the setting of sampling pipe
Hidden danger.
6) present invention can enter sampling pipe by suction nozzle convenient for gas, steady air flow reduces by the setting of pod
The probability of gaseous sample loss.
7) setting of sample introduction mechanism of the present invention, it is easy to carry, have practice significance, improve aircraft aerial survey sampling technique can
Row and practicability are sampled for gaseous pollutant.
8) present invention is by the setting of multiple connectors, it can be achieved that sample introduction mechanism is connected from different analysis instruments, with reality
When analysis acquisition gas, a variety of physicochemical properties of gaseous pollutant can be measured simultaneously.
9) multiple connectors of the invention are connect by teflon pipe with gas analysis instrument, are not reacted with active gases,
It ensure that the reliability of measurement result.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is a kind of overall schematic of the gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey in the embodiment of the present invention.
In figure, 1. pods, 2. suction nozzles, 3. sampling pipes, 4. fixed plates, 5. connecting tubes, 6. connectors, 7. analyzers
Device.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this hair
It is bright to propose a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey, with reference to the accompanying drawings of the specification, to the present invention do into
The elaboration of one step.
Embodiment 1
In a kind of typical embodiment of the invention, as shown in Figure 1, a kind of gaseous pollutant convenient for aircraft aerial survey into
Model machine structure, including L-shaped sampling pipe 3, the side of sampling pipe 3 are equipped with suction nozzle 2, and the entrance side size of suction nozzle 2 is less than outlet
Side size, suction nozzle 2 are structure as a whole with sampling pipe 3, and the other side of sampling pipe 3 can pass through aircraft aperture and be arranged, and sample
The fixed plate 4 that can be connect with interior of aircraft is arranged in the side that pipe 3 can pass through aircraft, and sampling pipe 3 can pass through the one of aircraft
Side is connect with connecting tube 5, and connecting tube 5 is equipped with several connectors 6, and the two sides arc transition of sampling pipe 3 connects.It is sampled by L shape
Sampling is protected always with aircraft central axes keeping parallelism in the setting of pipe 3, the side that sampling pipe 3 can be made to be set to aircraft exterior
Pipe 3, prevent sampling pipe 3 height fractureed in the air by gas shock it is impaired, and can effective steady air flow, correct airflow direction.
The shape of suction nozzle 2 is taper, and sampling pipe 3 is fixed on the outside of the suction nozzle 2 to be adopted for guiding air to enter
The pod 1 of sample pipe can be such that the gas flow rate entered in sampling pipe 3 is effectively reduced by the setting of taper suction nozzle 2, accord with
Air monitoring instrument monitoring standard is closed, too fast flow velocity degree of injury caused by instrument is reduced.
The length of pod 1 is longer than the length setting of suction nozzle 2, effective setting for coating suction nozzle 2, and pod 1
Internal diameter is more than or equal to the outer diameter of suction nozzle 2, and suction nozzle 2 and sampling pipe 3 are structure as a whole setting.One end of pod 1 and sampling
Pipe 3 passes through screw thread or welded connecting.
In order to reduce the influence to gas flow rate, pod 1 is diversion pipe, and 3 side of diversion pipe is cylindrical shape, and water conservancy diversion
Pipe is truncated conical shape with 3 connecting side of sampling pipe, i.e. the internal diameter of diversion pipe and sampling pipe junction is convenient for less than the internal diameter of diversion pipe
Guarantee the connection effect of diversion pipe and sampling pipe；
The length of 3 side of sampling pipe and connecting tube 20-70mm long compared with the sampling pipe other side, 3 overall dimensions of sampling pipe will not
Excessive, the stability that sampling pipe will not be arranged affects greatly, and is convenient for the Quick Acquisition to gaseous pollutant in this way, into
Gas nozzle entrance side outer diameter is 1-1.5mm, inlet side inside diameter 0.5mm-0.8mm, and in specific embodiment, pod length is
175mm, wherein the length of the circular cylinder shaped portion of pod 1 is 130mm, and L shape sampling tube inlet is the outlet of suction nozzle 2, sampling
3 entrance of pipe is connect with suction nozzle, and 3 outlet side outer diameter of sampling pipe is 10mm, and the round and smooth segment length of sampling pipe 3 is 60mm, and suction nozzle is long
Degree is 50mm, short side (side parallel with aircraft) long 230mm of sampling pipe 3, the long long 250mm in side.
4 size of fixed plate is greater than the size of sampling pipe 3, and fixed plate 4 is structure as a whole with sampling pipe 3, in fixed plate 4 and flies
After machine is fixed, convenient for the stability that sampling pipe 3 is arranged, fixed plate 4 is the plate of plectane or other shapes, and fixed plate 4 passes through bolt
It is reliably connected with aircraft inner bottom plating, avoids making aircraft biggish change, bolt hole is arranged in the side of fixed plate, passes through bolt hole
Realize that bolt passes through the fixation of fixed plate 4 and interior of aircraft.
3 material of sampling pipe is 316 stainless steels of polishing, and 316 stainless steels can, height that air-flow velocity fast unstable in air pressure
There is preferable patience under empty adverse circumstances, 316 stainless steels are a kind of austenitic stainless steels, are added to Mo (molybdenum) element, improve
The corrosion resistance and heat-resisting quantity of metal, the service life of sampling pipe is substantially increased using 316 stainless steels, saves cost.
The stainless steel inner wall of sampling pipe 3 has carried out silanization treatment, and active gases and sampling inside pipe wall hair is reduced or avoided
The loss of under test gas component, the damage of ingredient change and sampling pipe caused by raw suction-operated or chemical reaction.Silane
Change handles the accuracy for improving measurement result, extends the service life of sampling pipe.
In addition, connecting tube is teflon pipe, teflon pipe has the characteristics that chemical property is stable, suction-operated is weak, is not easy
It is reacted with active gases, avoids line loss, ensure that the reliability of measurement result.
Above-mentioned sampling device, 3 side of sampling pipe can stretch to interior of aircraft, and the other side forms the entrance of gas, air inlet
The direction that mouth advances towards aircraft is conducive to that sampling pipe 3 is protected to be not broken in this way, the gas under the setting effect of suction nozzle 2
Flow velocity is significantly reduced, and by the setting of L shape sampling pipe 3, the long side of sampling pipe 3 can be vertical with aircraft bottom plate, and the other side can
Remain with aircraft central axes keeping parallelism, be effectively ensured the service life of sampling pipe, whole-sample loss is less, whole to tie
Structure is simple, can satisfy the highly effective gathering in aircraft aerial survey experiment to gaseous pollutant.
The principle that tapered mouth is arranged is as follows:
Q=S*v
Wherein Q is sampling flow, and S is tapered mouth entrance circular cross-sectional area or sampling pipe area of section, and v is gas stream
Speed, wherein S=π r2, r is tapered mouth entrance circular cross-section radius or sampling pipe section radius.
Formulation process is as follows:
If mono- timing of gas sample flow Q, the gas flow by taper tube inlet are Q1=π r1 2*v1, v1For the flight of aircraft
Speed, the flying speed of aircraft is about 80m/s in this experiment.
The gas flow that the gas flow and sampling pipe entered by taper tube inlet enters is equal, that is, Q1=Q2, Q2=
πr2 2*v2, wherein r2To sample tube section radius of circle.
It is available according to relation above:
πr1 2*v1=π r2 2*v
It is possible thereby to derive: gas flow rate and radius square are inversely proportional, i.e.,
V1/V2=r2 2/r1 2
Therefore, by the setting of tapered mouth, the variation of tapered mouth entrance side and connector side radius can effectively reduce gas
Flow velocity, if the radius of suction nozzle entrance side is outlet side, that is, sampling pipe inner radial 1/10 or so, swiftly flowing gas warp
Slow down after suction nozzle and be down to the 1/100 of initial velocity, gas flow rate is reduced, and is met air monitoring instrument monitoring standard, is dropped simultaneously
The low damage to instrument.
Embodiment 2
For overcome the deficiencies in the prior art, the present invention also provides a kind of gaseous pollutant samplings convenient for aircraft aerial survey
System, including a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey, each connector of connecting tube 5 with it is identical
Or different analysis instrument connection.
In addition, pipeline equally uses teflon pipe, and pipeline is equipped with by piping connection between connector 6 and analysis instrument 7
Vacuum pump and adjustable flow meter adjust the flow velocity and flow of acquired gaseous sample, guarantee the operational safety of instrument.It can pass through
The power of vacuum pump is adjusted to adjust sample flow rate, the difference of gas flow rate is required to meet different analysis instruments, is guaranteed
The accuracy of analysis and the safety of instrument.It is to carry out each analysis instrument to acquired sample by the setting of flowmeter
There is suitable flow when analysis, adjustable flow meter has been accessed in pipeline, the demand pair when can be analyzed according to different instruments
Pipeline gas flow is controlled, and guarantees the accuracy of analysis and the safety of instrument.
Embodiment 3
The present invention also provides a kind of gaseous pollutant method of sampling convenient for aircraft aerial survey, use is as described in example 2
A kind of gaseous pollutant sampling system convenient for aircraft aerial survey, so effectively samples gaseous pollutant, and sample rate is fast,
And the good of sample effect
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey, which is characterized in that including L-shaped sampling pipe, sampling pipe
Side be equipped with suction nozzle, the entrance side size of suction nozzle is less than suction nozzle outlet side size, and suction nozzle is integrated with sampling pipe
Structure, the other side of sampling pipe can pass through aircraft aperture and be arranged, and sampling pipe can pass through the side setting of aircraft can be with
The fixed plate of interior of aircraft connection, the side that sampling pipe can pass through aircraft are connect with connecting tube, and connecting tube is equipped with several connections
Mouthful, the two sides arc transition connection of sampling pipe.
2. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey according to claim 1, which is characterized in that described
It samples inside pipe wall and is equipped with silylation layer.
3. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey according to claim 1, which is characterized in that described
The length of sampling pipe side and connecting tube is compared with the long 20-70mm in the sampling pipe other side.
4. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey according to claim 1, which is characterized in that described
The shape of suction nozzle is taper, and the sampling pipe is fixed with for guiding air to enter leading for sampling pipe on the outside of the suction nozzle
Stream cover.
5. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey according to claim 4, which is characterized in that described
The length of pod is longer than the length setting of the suction nozzle, and the internal diameter of pod is more than or equal to the outer diameter of the suction nozzle；
One end of the pod and the sampling pipe pass through screw thread or welded connecting.
6. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey according to claim 4, which is characterized in that described
Pod is diversion pipe, and diversion pipe side is cylindrical shape, and diversion pipe and the sampling pipe connecting side are truncated conical shape.
7. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey according to claim 1, which is characterized in that described
Suction nozzle entrance side outer diameter is 1-1.5mm, inlet side inside diameter 0.5mm-0.8mm.
8. a kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey according to claim 1, which is characterized in that described
Connecting tube is teflon pipe.
9. a kind of gaseous pollutant sampling system convenient for aircraft aerial survey, which is characterized in that including any one of claim 1-8
A kind of gaseous pollutant sample introduction mechanism convenient for aircraft aerial survey, each connector of the connecting tube with it is identical or different
Analysis instrument connection.
10. a kind of gaseous pollutant method of sampling convenient for aircraft aerial survey, which is characterized in that use as claimed in claim 9 one
Kind is convenient for the gaseous pollutant sampling system of aircraft aerial survey.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910533469.4A CN110186722A (en) | 2019-06-19 | 2019-06-19 | Convenient for gaseous pollutant sample introduction mechanism, sampling system and the method for aircraft aerial survey |
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| CN201910533469.4A CN110186722A (en) | 2019-06-19 | 2019-06-19 | Convenient for gaseous pollutant sample introduction mechanism, sampling system and the method for aircraft aerial survey |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113358425A (en) * | 2021-06-08 | 2021-09-07 | 陕西省环境科学研究院 | Flare gas discharge gas sampling device and monitoring method based on unmanned aerial vehicle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793863A (en) * | 2010-03-15 | 2010-08-04 | 中国石油化工股份有限公司 | Split gas sample injection device |
| CN202814765U (en) * | 2012-10-12 | 2013-03-20 | 山东大学 | Small-size airborne cloud droplet sampling system |
| CN203310679U (en) * | 2013-06-09 | 2013-11-27 | 南开大学 | Constant-speed sampling head for carrying out aerial survey on atmospheric aerosol |
| CN104820069A (en) * | 2015-04-22 | 2015-08-05 | 上海福劳斯检测技术有限公司 | Online gas analyzer for production field analysis |
| KR20170057201A (en) * | 2017-05-12 | 2017-05-24 | 한국과학기술연구원 | Transferring tube for sampling particle in air, and sampling apparatus comprising the same |
| CN207439765U (en) * | 2017-12-04 | 2018-06-01 | 邯郸钢铁集团有限责任公司 | A kind of gas analysis samples switching system |
| CN108226274A (en) * | 2018-01-26 | 2018-06-29 | 中国科学院地球环境研究所 | 14C-AMS fast on-line analyzing instrument |
| CN207585971U (en) * | 2017-11-24 | 2018-07-06 | 孙鸿娉 | Airborne atmospheric radioactivity aerosol sampling apparatus |
| CN109031468A (en) * | 2018-07-27 | 2018-12-18 | 中国科学院大气物理研究所 | Synchro measure N2O、CH4And CO2The eddy correlation subtraction unit of flux |
| CN109738584A (en) * | 2018-12-30 | 2019-05-10 | 盐城工学院 | A kind of electric nasus system |
| CN210128877U (en) * | 2019-06-19 | 2020-03-06 | 山东大学 | Gaseous pollutant sampling mechanism and sampling system convenient to aircraft aerial survey |
-
2019
- 2019-06-19 CN CN201910533469.4A patent/CN110186722A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793863A (en) * | 2010-03-15 | 2010-08-04 | 中国石油化工股份有限公司 | Split gas sample injection device |
| CN202814765U (en) * | 2012-10-12 | 2013-03-20 | 山东大学 | Small-size airborne cloud droplet sampling system |
| CN203310679U (en) * | 2013-06-09 | 2013-11-27 | 南开大学 | Constant-speed sampling head for carrying out aerial survey on atmospheric aerosol |
| CN104820069A (en) * | 2015-04-22 | 2015-08-05 | 上海福劳斯检测技术有限公司 | Online gas analyzer for production field analysis |
| KR20170057201A (en) * | 2017-05-12 | 2017-05-24 | 한국과학기술연구원 | Transferring tube for sampling particle in air, and sampling apparatus comprising the same |
| CN207585971U (en) * | 2017-11-24 | 2018-07-06 | 孙鸿娉 | Airborne atmospheric radioactivity aerosol sampling apparatus |
| CN207439765U (en) * | 2017-12-04 | 2018-06-01 | 邯郸钢铁集团有限责任公司 | A kind of gas analysis samples switching system |
| CN108226274A (en) * | 2018-01-26 | 2018-06-29 | 中国科学院地球环境研究所 | 14C-AMS fast on-line analyzing instrument |
| CN109031468A (en) * | 2018-07-27 | 2018-12-18 | 中国科学院大气物理研究所 | Synchro measure N2O、CH4And CO2The eddy correlation subtraction unit of flux |
| CN109738584A (en) * | 2018-12-30 | 2019-05-10 | 盐城工学院 | A kind of electric nasus system |
| CN210128877U (en) * | 2019-06-19 | 2020-03-06 | 山东大学 | Gaseous pollutant sampling mechanism and sampling system convenient to aircraft aerial survey |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113358425A (en) * | 2021-06-08 | 2021-09-07 | 陕西省环境科学研究院 | Flare gas discharge gas sampling device and monitoring method based on unmanned aerial vehicle |
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