CN107421788A - A kind of gas sampling inlet duct - Google Patents
A kind of gas sampling inlet duct Download PDFInfo
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- CN107421788A CN107421788A CN201710872329.0A CN201710872329A CN107421788A CN 107421788 A CN107421788 A CN 107421788A CN 201710872329 A CN201710872329 A CN 201710872329A CN 107421788 A CN107421788 A CN 107421788A
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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
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Abstract
The invention belongs to Environment features equipment technical field; disclose a kind of gas sampling inlet duct; including infrastructure component; infrastructure component includes sampling gun; sampling gun front end is removably connected with sampling gun import department; rear end is removably connected with sampling detector for multifunctional, and sampling gun is connected with sampling detector for multifunctional by sampling protection of pipe flexible pipe, and infrastructure component is used for single-point sampling configuration；Sampling gun import department removably connects functional different feature sampling head, is respectively used to Surface scan pattern and monitoring station pattern.The problem of present invention realizes the purpose of a tractor serves several purposes by assembling different feature sampling heads on the basis of infrastructure component, solves single existing SOIL GAS sampling apparatus purposes, gas leakage pollution, bulky, and inconvenient to carry and efficiency is low.
Description
Technical field
The present invention relates to Environment features equipment technical field, more particularly to a kind of gas sampling inlet duct.
Background technology
With issue in 2016《Soil Pollution Control action plan》With the development of auxiliary work, contaminated site investigation is repaiied
Multiple industry enters a booming period, wherein, space enrironment quality-monitoring is both environmentally friendly authorities' routine work
Demand, again be carry out investigation and repair basis.The work largely carried over due to industrial upgrading transition be present in current China
Industry contaminated site, these plot, which are substantially all, can have volatility or semi-volatile organic matter (VOCs/SVOCs).These volatilizations
The different zones of property or half volatile organic contaminant in place exist in different forms.For example, the volatility or half in soil
Volatile organic contaminant is more to be present in the pore structure of soil matrix in the form of SOIL GAS；Then waved on the place of excavation
Send out into the disperse air mass of ground proximity；In addition these air mass can be also diffused into air.
Current conventional contaminated site inlet duct can be divided into adsorbent solid extraction method, gas skirt according to principle difference
Determine flux method or collection airbag sampling method.The defects of certain all be present in these three methods：First, adsorbent solid extraction method and collection
Airbag sampling method is required for gaseous sample taking back lab analysis, gas leakage and secondary pollution in sample transportation be present
Risk, and can not realize that Site Detection is analyzed, the whole sample detecting cycle is long, efficiency is low；Secondly, although gas skirt flux method
Fast analyser (such as the handheld device such as PID) can be coordinated to be analyzed and processed at the scene, but gas skirt or gas collection dress
Put that volume itself is larger, and mobility is excessively poor, it is inconvenient for operation, it is impossible to meet the needs of contaminated site SOIL GAS detection and analysis.
The content of the invention
It is an object of the invention to provide a kind of gas sampling inlet duct, to solve existing SOIL GAS sampling apparatus purposes
The problem of single, gas leakage is polluted, is bulky, and inconvenient to carry and efficiency is low.
To use following technical scheme up to this purpose, the present invention：
A kind of gas sampling inlet duct, including infrastructure component, the infrastructure component include sampling gun, before the sampling gun
End is dismountable to be connected with sampling gun import department, and rear end is removably connected with sampling detector for multifunctional, the sampling gun and sampling
Detection means is connected by sampling protection of pipe flexible pipe, and the infrastructure component is used for single-point sampling configuration；
The sampling gun import department removably connects functional different feature sampling head, is respectively used to Surface scan mould
Formula and monitoring station pattern.
The device possesses three kinds of working morphologies, corresponds respectively to three kinds of mode of operations, first, soil gas well sampling is single-point
Sampling configuration, second, the whole audience SOIL GAS distribution scanning be Surface scan pattern, third, contaminated site ambient atmosphere monitoring be monitoring
Stand pattern, wherein latter two working morphology is to be sampled on the basis of the first working morphology by connecting different features
What head was realized, the purpose of a tractor serves several purposes is realized, and gas componant detection and analysis can be carried out in collection site, avoid sample
Gas leakage present in transportation and the risk of secondary pollution, the whole sample detecting cycle is shortened, improve operating efficiency.
Preferably, when the feature sampling head is air inlet bucket, for Surface scan pattern, when the feature samples
When head is sampling head, for monitoring station pattern.Infrastructure component coordinates air inlet bucket to be overflow using that can find out whole contaminated site
Go out the contaminative SOIL GAS distribution situation on ground；Infrastructure component coordinates sampling head to use, supporting to be arranged on fixed monitoring station
On, for carrying out the work that long term monitoring is carried out to contaminated site escaping gas.
Preferably, the sampling gun includes the internal sampling barral of a gun in hollow structure, it is arranged in the sampling barral of a gun
Sampling pipe, the sampling barral of a gun grip being detachably connected with the sampling gun rod rear end, positioned at the sampling barral of a gun grip rear end
Sampling pipe protection pipe joint, it is described sampling barral of a gun grip and the sampling pipe protection pipe joint between be provided with anti-skid structure,
The sampling pipe protection pipe joint is used to connect the sampling protection of pipe flexible pipe.
When needing to change feature sampling head, operating personnel's needs hold sampling barral of a gun grip and complete this process；
When actually using the device, operating personnel hold sampling barral of a gun grip, and buttress sampling pipe protection pipe joint, smooth out with the fingers and are protected along sampling pipe
Flexible pipe is protected, then carries out follow-up air inlet detection work.Set anti-skid structure purpose be for installation sampling barral of a gun grip and
Sampling pipe provides hold when protecting pipe joint.
Preferably, the sampling gun import department includes the sampling gun mouth positioned at front end, the sampling gun mouth is hollow
Structure, described sampling gun mouth one end is inlet end, and for being contacted with soil or outside atmosphere, the other end is connected with the sampling gun
It is logical.
It can pass through the collection with soil or with atmosphere progress gas, suction in three kinds of mode of operation down-sampling rifle mouths
Gas entered by the hollow cavity of sampling gun mouth in the sampling barral of a gun hollow cavity for the sampling gun being attached thereto, and then pass through
Protection of pipe flexible pipe is sampled to enter in sampling detector for multifunctional.
Taken over preferably, the sampling gun import department also includes sampling pipe, the sampling pipe adapter is located at the sampling
In the hollow cavity of barral of a gun, one end is connected with the sampling pipe, and the other end is connected with sampling pipe nipple, and the sampling pipe nipple is not
The one end for connecting the sampling pipe adapter is connected with the hollow cavity of the sampling gun mouth.
By setting sampling pipe to take over and sampling pipe nipple, sampling pipe is connected with sampling gun mouth, and then realize sampling
Detection means and the connection of sampling gun mouth, so as to realize the function of device air inlet detection.
Preferably, being provided with filter membrane and filter membrane net support in the sampling gun mouth, the filter membrane net support is close to institute
State sampling pipe nipple to set, the filter membrane is close to the filter membrane net support and set, for filtering the bulky grain sucked in gas
Impurity.Impurity particle thing is had unavoidably in suction gas, if these large granular impurities enter detection means with gas, can be influenceed
The testing result of gas componant.
Preferably, the sampling pipe adapter is connected with the sampling pipe using socket Quick Release mode.Due to sampling barral of a gun
For elongated tubular construction, therefore the sampling pipe being located therein is the smaller elongated tubular construction of caliber, and its design feature causes it
Operation installing space is limited, so the connected mode of sampling pipe adapter and sampling pipe is arranged to be socketed Quick Release mode, it is not only square
Just operation installation is carried out in small space, and docking is not accurate error-prone, saves built-up time, improves stable connection
Property.
Preferably, the sampling head is in mushroom-shaped, it is made up of the dust cover of cap type and the sampling handle of stem type,
The sampling handle is hollow structure, and one end of the sampling handle is removably connected in the concave face of the dust cover, described
The other end of sampling handle is removably connected to the end of the sampling gun mouth, the sampling handle be connected with the dust cover one
End is circumferentially provided with several elongate holes, and the elongate holes form with the hollow cavity of the sampling handle and connect outside atmosphere
Airintake wind-tunnel.
, will when the sampling inlet duct, which is used to carry out, carries out long term monitoring to the organic pollutant of contaminated site effusion
The device for being equipped with sampling head hangs over specified altitude assignment and connects monitoring device, you can carries out fixed station monitoring.Wherein bacterium
The dust cover of cap-type serves the effect of blocking to sampling gun mouth, and Atmospheric precipitation or other bad weathers can be prevented to the sampling
The influence of inlet duct, so as to cause testing result inaccurate.The elongate holes that sampling handle circumferentially opens up are advantageous to surrounding atmosphere
Quickly sucked in sampling gun mouth, subsequently into monitoring device detection gas composition, simplify sampling process, shorten monitoring week
Phase.
It is connected preferably, the air inlet bucket connects form with the sampling gun mouth using embedded quick, the air inlet bucket is not
One end end face for connecting the sampling gun import department is provided with Air Filter.The connected mode that embedded quick connects form can significantly contract
The short times for changing feature sampling head, sampling and the detection process of SOIL GAS are greatly simplify, shortens the whole work period,
Air Filter, into double barrier, the common double protection realized to air inlet gas circuit, improves with the filtration module in sampling gun mouth
Gas componant tests and analyzes the accuracy of result.
Preferably, the end of the sampling gun mouth is provided with screw thread, the end of the sampling handle and the sampling gun mouth
Connect form connection soon using screw thread.Connect the form connection same time for shortening replacing feature sampling head soon using screw thread, simplify
The spot sampling and detection process of SOIL GAS, it is threaded on sampling gun mouth, other screwed functions can also be connected
Property sampling head.
Beneficial effects of the present invention：
The invention provides it is a kind of it is simple and reliable for structure, easy to carry, sample inlet duct easily to operate, the device is only
Coordinate follow-up detection means by changing different feature sampling heads, just can realize the purpose of a machine three-use, apply respectively
In soil gas well sample (single-point sampling configuration), the whole audience SOIL GAS distribution scanning (Surface scan pattern) and contaminated site periphery it is big
In gas monitoring (monitoring station pattern) three kinds of mode of operations, the switching of Three models is succinctly quick, and sampling detector for multifunctional is sampling
Gas collection scene can carry out composition detection analysis to gaseous sample, avoid gas leakage present in sample transportation and secondary dirt
The risk of dye, sampling and the detection process of SOIL GAS are greatly simplify, improve the work of contaminated site sampling and composition detection
Make efficiency, there is very high practical value, be advantageous to promote contaminated site SOIL GAS Site Detection and monitoring technology.
Brief description of the drawings
Fig. 1 is the overall appearance schematic diagram of present invention sampling inlet duct；
Fig. 2 is the main structure chart of present invention sampling inlet duct；
Fig. 3 is A-A in Fig. 2 to sectional view；
Fig. 4 is partial enlarged view at B in Fig. 3；
Fig. 5 is the air inlet bucket structure figure of present invention sampling inlet duct；
Fig. 6 is the schematic appearance that present invention sampling inlet duct is equipped with air inlet bucket；
Fig. 7 is the schematic appearance that present invention sampling inlet duct is equipped with sampling head；
Fig. 8 is C-C in Fig. 7 to sectional view.
In figure, parts title is as follows corresponding to reference：
1st, infrastructure component；2nd, air inlet bucket；3rd, sampling head；
11st, sampling gun；12nd, sampling gun import department；13rd, sampling detector for multifunctional；14th, protection of pipe flexible pipe is sampled；15th, sampling gun
Bar grip；16th, sampling pipe protection pipe joint；17th, anti-skid structure；
111st, barral of a gun is sampled；112nd, sampling pipe；
121st, sampling gun mouth；122nd, sampling pipe is taken over；123rd, pipe nipple is sampled；124th, filter membrane；125th, filter membrane net support；
126th, air admission hole；
21st, Air Filter；
31st, dust cover；32nd, handle is sampled；33rd, elongate holes.
Embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, below
Technical scheme is further illustrated with reference to accompanying drawing and by embodiment.
The present embodiment provides a kind of gas sampling inlet duct, including infrastructure component 1, infrastructure component 1 include sampling gun 11,
The front end of sampling gun 11 is removably connected with sampling gun import department 12, and rear end is removably connected with sampling detector for multifunctional 13, adopted
Sample rifle 11 is connected with sampling detector for multifunctional 13 by sampling protection of pipe flexible pipe 14, and the infrastructure component 1 of said structure is used for SOIL GAS
Well sampling is single-point sampling configuration.In addition, sampling gun import department 12 removably the different feature of linkage function can also adopt
Sample head, for other mode of operations.
Wherein, sampling gun includes the internal sampling barral of a gun 111 in hollow structure, samples in barral of a gun 111 and is provided with sampling pipe
112, sampling barral of a gun 111 rear end is removably connected with sampling barral of a gun grip 15, the rear end connection sampling pipe of sampling barral of a gun grip 15
Pipe joint 16 is protected, is provided with anti-skid structure 17 between the two, it is soft that sampling pipe protection pipe joint 16 is used for connection sampling protection of pipe
Pipe 14, the length of sampling protection of pipe flexible pipe 14 should meet the sampling needs on whole audience ground.When needing to change feature sampling head, behaviour
Make personnel and need to hold sampling barral of a gun grip 15 to complete this process；When actually using the device, the hand-held sampling of operating personnel
The part of barral of a gun grip 15, and sampling pipe protection pipe joint 16 is buttressed, smooth out with the fingers along sampling protection of pipe flexible pipe 14, then progress is follow-up enters
Gas detects work.When setting the purpose of anti-skid structure 17 to be to protect pipe joint 16 for installation sampling barral of a gun grip 15 and sampling pipe
Hold is provided.The mode that barral of a gun grip 15 is connected through a screw thread is sampled in the present embodiment to be loaded and unloaded with sampling barral of a gun 111.
Wherein, sampling gun import department 12 includes the sampling gun mouth 121 positioned at front end, and sampling gun mouth 121 is hollow structure,
Its end is inlet end, and for being contacted with soil or outside atmosphere, the other end is connected with sampling gun 11, sampling gun mouth 121
End is provided with screw thread, for linkage function sampling head.Specifically, offer some air admission holes in the end of sampling gun mouth 121
126, gas enters sampling gun mouth 121 by air admission hole 126, and then enters phase therewith by the hollow cavity of sampling gun mouth 121
In the hollow cavity of sampling barral of a gun 111 even, then entered by sampling protection of pipe flexible pipe 14 in sampling detector for multifunctional 13.Air inlet
The selection of the number of hole 126 needs the minimum requirements according to air inflow and set.
Sampling gun import department 12 also includes sampling pipe adapter 122, and sampling pipe adapter 122 is hollow positioned at sampling barral of a gun 111
In inner chamber, its one end is connected with sampling pipe 112, and the other end is connected with sampling pipe nipple 123, and sampling pipe nipple 123 is not connected to be adopted
One end of sample pipe adapter 122 is connected with the hollow cavity of sampling gun mouth 121.Specifically, sampling pipe adapter 122 and sampling pipe
112 are connected using socket Quick Release modes, because, sampling barral of a gun 111 is elongated tubular construction, therefore the sampling being located therein
Pipe 112 is the smaller elongated tubular construction of caliber, and its design feature causes operation installing space to be limited, so using socket Quick Release
Mode, not only facilitate and carry out operation installation in small space, and docking is not accurate error-prone, saves built-up time, improves
Connective stability.By setting sampling pipe adapter 122 and sampling pipe nipple 123, by sampling pipe 112 and the phase of sampling gun mouth 121
Connection, and then the connection of sampling detector for multifunctional 13 and sampling gun mouth 121 is realized, so as to realize the function of device air inlet detection.
Further, to filter out the large granular impurity in suction gas, filter membrane is additionally provided with sampling gun mouth 121
124 and filter membrane net support 125, filter membrane net support 125, which is close to sample pipe nipple 123, to be set, and filter membrane 124 is close to filter membrane net support
125 are set, for filtering the large granular impurity sucked in gas.Because the gas of collection is organic gas, therefore it is required that herein
The material of filter membrane 124 of use should be made up of the inert material being esterified completely, ensure that the filter membrane 124 will not adsorb collection with this
Organic substance in gas and any chemical reaction does not occur therewith, so as to avoid the organic pollution materials concentration for gathering gas inclined
It is low, influence the accuracy of final detection result.It is understood that filter membrane 124 can be cellulose acetate sheets or poly- four
PVF filter membrane.The present embodiment preferentially selects cellulose acetate sheets, on the selection of filter sizes, to be considered, aperture
Too small that vapour lock loss can be caused excessive, aperture is too big can not then to meet filtering requirement, and the present embodiment is by cellulose acetate sheets hole
Footpath is chosen to be 3 microns of current sizes of industry, can take into account filtering requirement simultaneously and vapour lock loss requires.Regarded after the completion of use
The pollution condition of sampling gun mouth 121 changes filter membrane 124 or cleaning filter membrane net support 125, ensures effective mistake when next time uses
Filter acts on, because the front end of sampling gun 11 and sampling gun import department 12 are detachable, therefore when needing to change filter membrane 124 or cleaned
During filter membrane net support 125, sampling gun import department 12 is pulled down, loaded onto again after the completion of cleaning replacement.
Wherein, air pump and detection and analysis instrument are provided with sampling detector for multifunctional 13, in actual use, air pump is sampling
Rifle mouth 121 sucks gas and provides power, to complete intake process, by the caliber and the sampling that limit sampling protection of pipe flexible pipe 14
Time, so as to be defined to the flow for sucking gas, therefore when the gas flow of suction reaches predetermined value, the sampling air inlet
Device is automatically stopped pumping process, and sampling air inlet work is completed, and uses the simplicity of saving worry that operates.Also, the restriction of air inflow
The uniformity of the amount of each gaseous sample when carrying out multiple repairing weld to same single-point or Same Site region, can be ensured, from
And improve accuracy of detection.
Feature sampling head in the present embodiment can be air inlet bucket 2, and SOIL GAS distribution scanning is that face is swept for the whole audience
Pattern is retouched, the contaminative SOIL GAS distribution situation that whole contaminated site overflows ground can be found out.Air inlet bucket 2 and sampling gun mouth
121 connect form connection using embedded quicks, embedded quick connect form connected mode can significantly shorten change air inlet bucket 2 when
Between, greatly simplify sampling and the detection process of SOIL GAS, shorten the whole work period.Air inlet bucket 2 is not connected with sampling gun import
One end end face in portion is provided with Air Filter 21, and Air Filter 21 forms double barrier with the filter membrane 124 in sampling gun mouth 121, altogether
With the double protection realized to air inlet gas circuit, the accuracy that gas componant tests and analyzes result is improved.And the present embodiment pair
The structure of air inlet bucket 2 has carried out the hydrodynamics optimization design under particular flow rate, alleviates the weight of air inlet bucket 2, improves this
Inlet duct carrying when carrying out Surface scan work and mobility are sampled, compact is easy to operate, and efficiency improves.
Feature sampling head in the present embodiment can also be sampling head 3, supporting to be arranged on fixed monitoring station, use
The work of long term monitoring is carried out to contaminated site escaping gas in development.Sampling head 3 is in mushroom-shaped, by the anti-of cap type
The sampling handle 32 of dust hood 31 and stem type forms, and sampling handle 32 is hollow structure, and its one end is removably connected to dust cover 31
Concave face in, the other end is removably connected at the screw thread of the end of sampling gun mouth 121, wherein, sampling handle 32 with it is dust-proof
One end of the connection of cover 31 is circumferentially arranged several elongate holes 33, and elongate holes 33 are formed with sampling the hollow cavity of handle 32
Connect the airintake wind-tunnel of outside atmosphere.
When the organic pollutant that the sampling inlet duct escapes to contaminated site carries out long term monitoring, will be equipped with big
The device of gas sampling head 3 hangs over specified altitude assignment and connects monitoring device, you can carries out fixed station monitoring.Wherein cap type is anti-
Dust hood 31 serves the effect of blocking to sampling gun mouth 121, can prevent Atmospheric precipitation or other bad weathers to this sample into
The influence of device of air, so as to cause testing result inaccurate.It is big that the elongate holes 33 that sampling handle 32 circumferentially opens up are advantageous to surrounding
Gas can be sucked quickly in sampling gun mouth 121, subsequently into monitoring device detection gas composition, simplifies sampling process,
Monitoring cycle is shortened, improves operating efficiency.
In the present embodiment, the end of sampling gun mouth 121 is provided with screw thread, the end of sampling head 3 and sampling gun mouth 121
End connects form connection soon using screw thread.Due to being to be suspended in certain specified altitude assignment when the device is applied to monitoring station pattern, therefore
The form of threaded connection can increase connection strong degree to a certain extent, prevent because Action of Gravity Field, suspension time are too long or wind
The weather conditions such as rain, sampling gun mouth 121 depart from the phenomenon even therefrom to come off with sampling head 3 and occurred, and ensure the device energy
It is enough to be used for a long time in monitoring station.In addition, the type of attachment that screw thread connects soon can shorten the time for changing sampling head 3, letter
Change sampling air inlet and monitoring detection process, improve operating efficiency.
The application method of the sampling inlet duct is illustrated below：
When the single-point sampling configuration using the device carries out soil gas well sampling work, operating personnel hold sampling gun
Bar grip 15, and buttress sampling pipe protection pipe joint 16, smooth out with the fingers along sampling protection of pipe flexible pipe 14, sequentially by sampling gun mouth 121 and adopt
Sample rifle 11 is sent in the SOIL GAS detection drilling accomplished fluently, and is then turned on ground sampling detector for multifunctional 13, is started intake process,
After the tolerance for meeting setting value is collected into, closing ground sampling detector for multifunctional 13 and holding sampling barral of a gun grip 15 entirely to visit
Enter part and pull out SOIL GAS detection drilling, so far sample air inlet work and complete.
When with carrying out the whole audience SOIL GAS distribution scanning of the Surface scan pattern using the device, operating personnel hold sampling
Barral of a gun grip 15, air inlet bucket 2 is connect into form by embedded quick with sampling gun mouth 121 and assembled, open ground after the completion of assembling
Surface sample detection means 13, hold the device ground on the scene walking and make an inspection tour, and SOIL GAS is sucked into detection means.
When the monitoring station pattern using the device, which carries out contaminated site ambient atmosphere, to be monitored, operating personnel hold sampling
Barral of a gun grip 15, sampling head 3 is connect into form by screw thread with the end of sampling gun mouth 121 soon and assembled, assembling is completed will
It is suspended on specified altitude assignment and connects monitoring device, you can carries out long-term fixed station monitoring.
Above-mentioned sampling inlet duct provided by the invention, the device have three kinds of working morphologies, correspond respectively to three kinds of works
Operation mode, wherein latter two working morphology be the first working morphology i.e. in the structure of infrastructure component 1 by being linked and packed
What different feature sampling heads was realized, simple and reliable for structure, volume is light and handy, easy to carry and easy to operate, coordinates follow-up
Detection means can reach the purpose of a machine three-use, and the switching of three kinds of mode of operations is realized by connecing mode soon, change simply,
It is time saving and energy saving, the operating efficiency of contaminated site gas sampling and composition detection is greatly improved, is advantageous to promote contaminated site
SOIL GAS Site Detection and monitoring technology, there is very high practical value.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating example of the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of gas sampling inlet duct, it is characterised in that including infrastructure component (1), the infrastructure component (1) includes sampling
Rifle (11), sampling gun (11) front end are removably connected with sampling gun import department (12), and rear end is removably connected with and adopted
Sample detection means (13), the sampling gun (11) are connected with sampling detector for multifunctional (13) by sampling protection of pipe flexible pipe (14), institute
State infrastructure component (1) and be used for single-point sampling configuration；
The sampling gun import department (12) removably connects functional different feature sampling head, is respectively used to Surface scan mould
Formula and monitoring station pattern.
2. gas sampling inlet duct according to claim 1, it is characterised in that when the feature sampling head is air inlet
During bucket (2), for Surface scan pattern, when the feature sampling head is sampling head (3), for monitoring station pattern.
3. gas sampling inlet duct according to claim 2, it is characterised in that the sampling gun (11) is in including inside
The sampling barral of a gun (111) of hollow structure, the sampling pipe (112) being arranged in the sampling barral of a gun (111), the sampling pipe
(112) one end connects with the sampling protection of pipe flexible pipe (14), and the other end connects with the sampling gun import department (12), described to adopt
Sample barral of a gun (111) rear end is removably connected with sampling barral of a gun grip (15), positioned at described sampling barral of a gun grip (15) rear end
Sampling pipe protection pipe joint (16), it is provided between the sampling barral of a gun grip (15) and sampling pipe protection pipe joint (16)
Anti-skid structure (17), the sampling pipe protection pipe joint (16) are used to connect the sampling protection of pipe flexible pipe (14).
4. gas sampling inlet duct according to claim 3, it is characterised in that the sampling gun import department (12) includes
Sampling gun mouth (121) positioned at front end, the sampling gun mouth (121) are hollow structure, and described sampling gun mouth (121) one end is
Inlet end, for being contacted with soil or outside atmosphere, the other end is connected with the sampling gun (11).
5. sampling inlet duct according to claim 4, it is characterised in that the sampling gun import department (12) also includes adopting
Sample pipe takes over (122), sampling pipe adapter (122) in the hollow cavity of the sampling barral of a gun (111), one end with it is described
Sampling pipe (112) connects, and the other end is connected with sampling pipe nipple (123), and the sampling pipe nipple (123) is not connected with the sampling
One end of pipe adapter (122) is connected with the hollow cavity of the sampling gun mouth (121).
6. sampling inlet duct according to claim 5, it is characterised in that be provided with the sampling gun mouth (121)
Filter membrane (124) and filter membrane net support (125), the filter membrane net support (125) are close to the sampling pipe nipple (123) and set, institute
State filter membrane (124) and be close to filter membrane net support (125) setting, for filtering the large granular impurity sucked in gas.
7. sampling inlet duct according to claim 5, it is characterised in that the sampling pipe adapter (122) is adopted with described
Sample pipe (112) is connected using socket Quick Release mode.
8. sampling inlet duct according to claim 4, it is characterised in that the sampling head (3) is in mushroom-shaped, bag
Include the dust cover (31) of cap type and the sampling handle (32) of stem type, the sampling handle (32) is hollow structure, the sampling handle
(32) one end is removably connected in the concave face of the dust cover (31), and the other end of the sampling handle (32) is detachable
The end for being connected to the sampling gun mouth (121), it is described sampling handle (32) be connected with the dust cover (31) one end circumference
Several elongate holes (33) are provided with, the elongate holes (33) connect outer with the hollow cavity formation of the sampling handle (32)
The airintake wind-tunnel of portion's air.
9. sampling inlet duct according to claim 4, it is characterised in that the air inlet bucket (2) and the sampling gun mouth
(121) form connection is connect using embedded quick, the air inlet bucket (2) is not connected with one end end face of the sampling gun import department (12)
It is provided with Air Filter (21).
10. sampling inlet duct according to claim 8, it is characterised in that the end of the sampling gun mouth (121) is set
There is screw thread, the sampling handle (32) connects form using screw thread with the end of the sampling gun mouth (121) and is connected soon.
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| CN201710872329.0A CN107421788A (en) | 2017-09-25 | 2017-09-25 | A kind of gas sampling inlet duct |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120622A (en) * | 2017-12-14 | 2018-06-05 | 北京航天易联科技发展有限公司 | It is a kind of can dust-proof heating gas sampling assembly |
| CN110702471A (en) * | 2019-11-15 | 2020-01-17 | 中国原子能科学研究院 | Sampling device for aerosol migration mechanism test |
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