CN206399708U - A kind of saturating formula soil profile gas collecting device of film - Google Patents
A kind of saturating formula soil profile gas collecting device of film Download PDFInfo
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- CN206399708U CN206399708U CN201720082082.8U CN201720082082U CN206399708U CN 206399708 U CN206399708 U CN 206399708U CN 201720082082 U CN201720082082 U CN 201720082082U CN 206399708 U CN206399708 U CN 206399708U
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Abstract
The utility model is related to a kind of saturating formula soil profile gas collecting device of film, and the device is made up of sampling unit, air-vent, silicone tube, the first aperture, plug, hollow thin copper pipe, unit connecting tube, soil layer numbering, rubber blanket, second orifice and conical head.The device utilizes the characteristic of silicone tube permeable watertight, device internal gas is consistent all the time with soil in-situ gas-condition, the gas of volume needed for directly being gathered with syringe during detection.The device can for a long time be detected under the conditions of Different climate to the soil profile gas of different depth.Which solves big to soil disturbance present in existing soil profile gas collection method and technology, air collecting pipe lower end is easily blocked, air collecting pipe is vulnerable to destruction, identify the problem of difficulty and inadequate accuracy are sampled under easily chaotic and water logging or Freezing-Melting Condition.It can be widely used for the soil gas collection under various situations and study.
Description
Technical field
The utility model is related to the saturating formula soil profile gas collecting device of film, belongs to Soil Trace Gases acquisition technique and grinds
Study carefully field.
Background technology
Distribution of the learning gas on soil profile helps to understand generation, migration and consumption of the greenhouse gases in the soil body
Process, discloses greenhouse gases mechanism of production and its relation between surface discharge, so as to formulate reduction of greenhouse gas discharge measure
Theoretical foundation is provided.The collection to soil profile gas mainly had two major class methods in the past, and one is to excavate section in sample area,
Gas acquisition probe or collection vessel are installed and then gas is gathered, its destroy the structure of soil script prevent measurement result from
True reflection truth, and can not ensure the accurate of the upright position of acquisition probe or other devices in soil after burial
Property；Two be the harvester that tool hole is embedded to using earth boring auger, and gas is acquired using nylon hose and three-way valve, but the party
There are several defects in method.Once one is nylon hose aging or is isolated by sharp objects that experimental result will be caused to produce error or mistake
By mistake, and nylon tube cut off or destroyed after can not determine the corresponding depth of soil of thief hatch；Two be when being only difficult to long with nylon cloth
Between completely barrier soil particle enter gas collecting chamber, for a long time observe when gas delivery tube lower end may be blocked；Three are
The soil water mouthful can enter gas producing device through gas exchanges under flooding condition, when causing gas production can only recovered water, and if beaten in advance
Enter equivalent nitrogen, then experimental result can not truly reflect each soil layer greenhouse gases truth, particularly N completely2O gas (bears
Positive qin etc., rice field-upland field rotation paddy soil in-situ acquisition system and acquisition method, 2009).
The content of the invention
The purpose of this utility model is to provide one kind can carry out soil gas in-situ observation under water logging or arid situation
The saturating formula soil profile gas collecting device of film, the device be by sampling unit, air-vent, silicone tube, the first aperture, plug,
Hollow thin copper pipe, unit connecting tube, soil layer numbering, rubber blanket, second orifice and conical head composition, the device are saturating using silicone tube
The fluid-tight characteristic of gas, makes device internal gas be consistent all the time with soil in-situ gas-condition, straight with syringe during detection
The gas of volume needed for connecing collection.The device is examined for a long time under the conditions of Different climate to the soil profile gas of different depth
Survey, which solves big to soil disturbance present in existing soil profile gas collection method and technology, air collecting pipe lower end
Easily block, air collecting pipe is vulnerable to destruction, mark is easily chaotic and water logging or Freezing-Melting Condition under sampling difficulty and accuracy is inadequate
The problem of.It can be widely used for the soil gas collection under various situations and study.
A kind of saturating formula soil profile gas collecting device of film described in the utility model, the device is by sampling unit, thoroughly
Stomata, silicone tube, the first aperture, plug, hollow thin copper pipe, unit connecting tube, soil layer numbering, rubber blanket, second orifice and cone
Forming head is constituted, and is uniformly distributed in the middle part of sampling unit (1) outer wall inside air-vent (2), sampling unit (1) and is filled with silicone tube
(3) plug (5), is provided with the two ends of silicone tube (3), the first aperture (4) is provided with silicone tube (3) upper end plug (5), it is hollow thin
Copper pipe (6) inserts silicone tube (3) inside, the top that unit connecting tube (7) passes through sampling unit (1) two ends by the first aperture (4)
Sampling unit (1) is concatenated and fixed by the groove at angle, and second orifice (12) is provided with unit connecting tube (7).
At the top of the other end of hollow thin copper pipe (6) soil layer numbering (9), nut (10) interior band are being carved with fixing nut (8)
There is the rubber blanket (11) of sealing.
The sampling unit (1) for being fixed on the device lower end is connected with conical head (13).
Each sampling unit (1) spacing arbitrary arrangement adjustment in the device.
The saturating formula soil profile gas collecting device of a kind of film described in the utility model, the beneficial effect of the device with it is existing
Technology is compared, and is had the following advantages that：
Device described in the utility model utilizes the characteristic of silicone tube (3) permeable watertight, proposes a kind of in water logging or dry
Under damage caused by a drought border can accessible in-situ observation soil gas solution, be particularly suitable for use in arid but there are water logging or freeze thawing feelings
The arda sampling of scape.Gas delivery tube lower end is avoided in previous methods to be easily blocked, and under flooding condition the soil water through gas
Body exchanges mouth and enters gas producing device, when causing gas production can only recovered water situation.
Compared with excavating the method for section, the destruction to soil texture is reduced, while the close of each sampling unit (1) connects
Connect the accuracy that ensure that sampling depth.Replace nylon tube using hollow thin copper pipe (6), during collection gas with syringe insertion by
Nut (8) and the fixed rubber blanket (11) of nut (10) are acquired, and are reduced in the past with replacement plastic three-way valve as gas production
The gas transport and collecting part that device band is come are destroyed (such as aging or artificial destruction) and cause the wind of experimental error or mistake
Danger；Corresponding soil layer numbering (9) is engraved on nut (8) replace label paper or other labeling methods, it is to avoid sampling depth
The risk obscured；The present apparatus, can be according to research purpose or required precision in different soils while ensureing that sampling depth is accurate
Gas production unit is added or reduced to depth.Its each part ageing resistance is strong after the present apparatus is installed, it is not necessary to safeguard, can long term monitoring
The dynamic change of soil gas.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is silicone tube schematic diagram in the utility model sampling unit；
Fig. 3 is the utility model sampling unit sectional view.
Embodiment
Embodiment
In order to probe into Northwest arid district under-film drip irrigation Cotton Soil section N2O distribution characteristics and its pass with surface discharge
System, the utility model is wild in Cele In Xinjiang Desert Grassland ecosystem country of Xinjiang Inst. of Ecology and Geography, Chinese Academy of Sciences
(37 ° of 01'06 " N, 80 ° of 43'48 " E) is tested at surgery observational study station, locality category warm temperate zone Province Extreme Arid Climate, daytime
The night temperature difference is big, and sunshine is long, and precipitation is few, and evaporation capacity is big, and average annual 11.9 DEG C of temperature, average annual precipitation 35.1mm (is distributed mainly on 5-7
Month), average annual evaporation capacity 2595.3mm, experimental field soil is based on aeolian sandy soil；The experiment totally 32 cells, have made the saturating formula soil of film
32 sets of earth section gas collecting device, acquires the gaseous sample of 32 soil profiles；
A kind of saturating formula soil profile gas collecting device of film described in the utility model, the device is by sampling unit, thoroughly
Stomata, silicone tube, the first aperture, plug, hollow thin copper pipe, unit connecting tube, soil layer numbering, rubber blanket, second orifice and cone
Forming head is constituted, and air-vent 2 is uniformly distributed in the middle part of the outer wall of sampling unit 1, for carrying out gas exchanges, sampling unit 1 with soil
Inside is filled with the silicone tube 3 of permeable watertight, is provided with plug 5 at the two ends of silicone tube 3, is provided with the upper end plug 5 of silicone tube 3
First aperture 4, hollow thin copper pipe 6 is inserted inside silicone tube 3 by the first aperture 4, solid at the top of the other end of hollow thin copper pipe 6
The rubber blanket 11 that sealing is carried in soil layer numbering 9, nut 10 is carved with fixed nut 8, unit connecting tube 7 passes through sampling unit
Sampling unit 1 is concatenated fixation by the groove of the drift angle at 1 two ends, and second orifice 12 is provided with unit connecting tube 7, the dress is fixed on
The sampling unit 1 for putting lower end is connected with conical head 13, and the spacing of each sampling unit 1 in the device can arbitrary arrangement adjustment；
Each sampling unit 1 is concatenated by fixation by the groove of the drift angle at each two ends of sampling unit 1 using unit connecting tube 7,
The two ends of silicone tube 3 of the permeable watertight of the inside of sampling unit 1 filling are blocked using plug 5, pass through the upper end plug of silicone tube 3
The first aperture 4 on 5 inserts hollow thin copper pipe 6, then the first aperture 4 is sealed；By the sampling list of in the middle part of device and bottom
The second orifice 12 that member 1 first passes through the middle part of unit connecting tube 7 passes hollow thin copper pipe 6, then passes through the upper end plug 5 of silicone tube 3
On the first aperture 4 insert hollow thin copper pipe 6, then the first aperture 4 is sealed；The hollow thin other end of copper pipe 6 is fixed and carved
There are the tightening nuts 10 of nut 8 of soil layer numbering 9, be acquired during collection gas with syringe needle insertion rubber blanket 11；It is fixed
Conical head 13 on the sampling unit 1 of the device lower end be conducive to install and adjusting apparatus depth, whole device height and adopt
The relative position of sample unit 1 can be adjusted according to demand, gather the soil gas of any depth；
When in use, the earth boring auger with external diameter slightly larger than the external diameter of sampling unit connecting tube 7 drills, place a device into hole and under
It is depressed at the top of device and is flushed with earth's surface；Checked after installation and ensure that nut 10 has been tightened, balance starts sampling observation after one week；Every time
With 50ml syringes, therefrom directly collection 30ml gases unloading is used to determine analysis in gas sampling bottle when gathering gas；
Gas analysis sample：Gaseous sample is in one week using Agilent Technologies companies GC-7890A gas phases
Chromatograph determines three kinds of main greenhouse gas (CO2、CH4、N2O) concentration, is shown in Table 1.Table 1 is the saturating formula soil profile gas of 32 mantles
Mean concentration of the harvester to each greenhouse gases after three sampling determinations of Extremely arid area Cotton Soil Growing season of Xinjiang.
The concentration profile distribution (n=32) of 1 three kinds of greenhouse gases of table
As can be seen from the table：Using the saturating formula soil profile gas collecting device of film described in the utility model, use
Agilent Technologies companies GC-7890A gas chromatograph for determination obtains the temperature of area's different times soil profile
Room gas data, display three kinds of this area greenhouse gases distribution curve and concentration on soil profile is different；See on the whole,
Each soil layer CO2Concentration>CH4Concentration>N2O concentration；From distribution trend, CO2Concentration increases with the increase of depth of soil, CH4
Concentration is reduced with the increase of depth of soil, N2O concentration is consistent substantially in each soil layer content.
Claims (4)
1. a kind of saturating formula soil profile gas collecting device of film, it is characterised in that the device is by sampling unit, air-vent, silica gel
Pipe, the first aperture, plug, hollow thin copper pipe, unit connecting tube, soil layer numbering, rubber blanket, second orifice and conical head composition,
In sampling unit（1）Air-vent is uniformly distributed in the middle part of outer wall（2）, sampling unit（1）Inside is filled with silicone tube（3）, in silica gel
Pipe（3）Two ends be provided with plug（5）, in silicone tube（3）Upper end plug（5）Provided with the first aperture（4）, hollow thin copper pipe（6）It is logical
Cross the first aperture（4）Insert silicone tube（3）Inside, unit connecting tube（7）Pass through sampling unit（1）The groove of the drift angle at two ends will
Sampling unit（1）Concatenation is fixed, in unit connecting tube（7）It is provided with second orifice（12）.
2. the saturating formula soil profile gas collecting device of film according to claim 1, it is characterised in that in hollow thin copper pipe（6）
The other end at the top of fixing nut（8）On be carved with soil layer numbering（9）, nut（10）The interior rubber blanket with sealing（11）.
3. the saturating formula soil profile gas collecting device of film according to claim 1, it is characterised in that be fixed under the device
The sampling unit at end（1）With conical head（13）Connection.
4. the saturating formula soil profile gas collecting device of film according to claim 1, it is characterised in that respectively adopting in the device
Sample unit（1）Spacing arbitrary arrangement is adjusted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720082082.8U CN206399708U (en) | 2017-01-20 | 2017-01-20 | A kind of saturating formula soil profile gas collecting device of film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720082082.8U CN206399708U (en) | 2017-01-20 | 2017-01-20 | A kind of saturating formula soil profile gas collecting device of film |
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| CN206399708U true CN206399708U (en) | 2017-08-11 |
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| CN201720082082.8U Expired - Fee Related CN206399708U (en) | 2017-01-20 | 2017-01-20 | A kind of saturating formula soil profile gas collecting device of film |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942036A (en) * | 2017-11-16 | 2018-04-20 | 中国科学院亚热带农业生态研究所 | A kind of method and device of isotope labeled in situ Methane in Soils oxidation bacteria |
| CN108444776A (en) * | 2018-04-08 | 2018-08-24 | 湖北大学 | The sampler and its sampling method of soil column longitudinal direction soil layer gas |
| CN108459349A (en) * | 2018-02-08 | 2018-08-28 | 杭州超钜科技有限公司 | Seismic precursor soil tomography gas content observing well construction |
| CN110596321A (en) * | 2019-09-27 | 2019-12-20 | 上海洁壤环保科技有限公司 | Modular soil gas monitoring well |
| CN111089760A (en) * | 2020-02-20 | 2020-05-01 | 中国科学院寒区旱区环境与工程研究所 | Device for collecting gas in soil by balance method |
| CN111238877A (en) * | 2020-02-28 | 2020-06-05 | 南京信息工程大学 | Sediment pore water and lake water body in-situ gas-liquid sampling device and method |
| CN111947996A (en) * | 2020-09-01 | 2020-11-17 | 中国农业科学院农业资源与农业区划研究所 | In-situ soil profile greenhouse gas collecting device |
| CN112485069A (en) * | 2020-10-29 | 2021-03-12 | 中国地质大学（武汉） | Active soil gas acquisition and detection system |
-
2017
- 2017-01-20 CN CN201720082082.8U patent/CN206399708U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942036A (en) * | 2017-11-16 | 2018-04-20 | 中国科学院亚热带农业生态研究所 | A kind of method and device of isotope labeled in situ Methane in Soils oxidation bacteria |
| CN108459349A (en) * | 2018-02-08 | 2018-08-28 | 杭州超钜科技有限公司 | Seismic precursor soil tomography gas content observing well construction |
| CN108444776A (en) * | 2018-04-08 | 2018-08-24 | 湖北大学 | The sampler and its sampling method of soil column longitudinal direction soil layer gas |
| CN110596321A (en) * | 2019-09-27 | 2019-12-20 | 上海洁壤环保科技有限公司 | Modular soil gas monitoring well |
| CN111089760A (en) * | 2020-02-20 | 2020-05-01 | 中国科学院寒区旱区环境与工程研究所 | Device for collecting gas in soil by balance method |
| CN111238877A (en) * | 2020-02-28 | 2020-06-05 | 南京信息工程大学 | Sediment pore water and lake water body in-situ gas-liquid sampling device and method |
| CN111238877B (en) * | 2020-02-28 | 2022-10-14 | 南京信息工程大学 | Sediment pore water and lake water body in-situ gas-liquid sampling device and method |
| CN111947996A (en) * | 2020-09-01 | 2020-11-17 | 中国农业科学院农业资源与农业区划研究所 | In-situ soil profile greenhouse gas collecting device |
| CN112485069A (en) * | 2020-10-29 | 2021-03-12 | 中国地质大学（武汉） | Active soil gas acquisition and detection system |
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Granted publication date: 20170811 Termination date: 20200120 |