CN201852726U - Trace gas acquisition device at different soil section gradients - Google Patents
Trace gas acquisition device at different soil section gradients Download PDFInfo
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- CN201852726U CN201852726U CN2010202154641U CN201020215464U CN201852726U CN 201852726 U CN201852726 U CN 201852726U CN 2010202154641 U CN2010202154641 U CN 2010202154641U CN 201020215464 U CN201020215464 U CN 201020215464U CN 201852726 U CN201852726 U CN 201852726U
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Abstract
The utility model relates to the sample acquisition of gas which spreads out from soil and greenhouse gas emitted by the soil in the studies of agriculture, forestry and environment, in particular to a synchronous acquisition device of gas samples at different soil section gradients. The trace gas acquisition device mainly consists of a cylindrical plastic column, polyvinyl chloride (PVC) gas acquisition pipes and different parameters sensors. The different gradients are arranged at the upper part of the cylindrical plastic column and the same gradient has a plurality of holes (the utility model adopts two holes), wherein one hole is connected with one PVC gas acquisition pipe which has the same diameter with the hole and the other hole is connected with one different parameters sensor. When gas is collected, a valve which is arranged at the upper end of one gas acquisition pipe is opened and the soil gas samples are collected through an injector. The parameters sensors are used for measuring the temperature, the moisture, the humidity and other parameters of the soil at the gradient. The device is respectively embedded in different soil to realize the advantages of synchronous measurement and comparative analysis of multiple soil bodies and multiple gradients.
Description
Technical field:
The utility model relates to the gas of the soil diffusion in agricultural, forestry and the Environmental Studies, the trace gas sample collecting of soil discharging, specifically a kind of soil profile gradient trace gas harvester.
Background technology:
Global climate and environmental change are one of current problem in science of greatest concern, the generation mechanism of trace gas, influence factor and the corresponding balanced measure that reduces discharging in the research soil, for the control greenhouse gas emission, maintaining ecological balance, improve China people's living environment quality, have important practical significance undoubtedly.Directly at field position-finding gas escaped quantity, especially greenhouse gases, be the focus and the difficult point in soil investigation field always.People have carried out big quantity research to the discharging of face of land trace gas, but the report that the soil profile gaseous emission is studied seldom, and this mainly is the restriction that is subjected to acquisition method or harvester.
The acquisition method of soil profile gaseous sample receives much attention always, for a long time, people are when solving soil profile diverse location place gas collecting, usually the method that adopts is to obtain the gas sample of different soil body sections one by one, or obtain the gas sample at same soil body section different depth place one by one, consequently all be difficult to realize the gas synchronous acquisition of the different gradients of same soil body section, all adopt the manual sampling one by one of gas collecting device.
Summary of the invention:
In order to overcome the deficiency of single collection sample in the prior art, the utility model provides a kind of device that can realize synchronous acquisition to the gas of the different gradients of same soil and same gradient of different soils and different gradients.
To achieve these goals, technical scheme of the present invention is: the present invention mainly all is made up of the PVC gas collecting pipe and the sensor of encapsulation process annular plastic column, two ends.The annular plastic column can design suitable gradient according to the research needs, for example can per 20 centimetres be a gradient, two or more holes (the utility model is an example with two holes) can be arranged on each gradient, one of them hole connects PVC gas collecting pipe, other holes can connect multiple parameter sensors according to the research needs, its feature just is to comprise an annular plastic column that contains porous, all there is the PVC gas collecting pipe of encapsulation process at different parameters sensor and two ends, described annular plastic column is provided with different gradients, contain porous on the same gradient, one of them hole connects the PVC gas collecting pipe identical with the aperture, and other hole connects the different parameters sensor.Described PVC gas collecting pipe, tube outer diameter is 1～3cm, and consistent with the aperture above the annular plastic column, and is tight with the sealing of annular plastic column.Described annular plastic column, its length is decided according to the gradient number, and the annulus external diameter is 10～15cm, and internal diameter is 5～10cm.Contain a plurality of gradients on it, gradient magnitude and quantity need according to research and decide, and two or more holes are arranged on the same gradient, and the same foundation research of hole count needs and decides.Sealed valve of termination on the PVC gas collecting pipe is connected syringe when gathering gas with sealed valve, open the valve of PVC gas collecting pipe upper end, draws by syringe and gathers the soil gas sample.The gas of diffusion and discharging can be full of in PVC gas collecting pipe in the soil, for the gas of guaranteeing to be drawn into is the gas sample of required soil gradient, can realize by the mode that repeatedly extracts with impure gas in the evacuated tube.The different parameters sensor can be used for measuring a plurality of parameters such as the temperature, moisture, humidity of this gradient soil, can settle the sensor of measuring desired parameters according to the needs of research.This device can be imbedded in the different soil, to realize the advantage of a plurality of soil bodys, a plurality of gradient synchro measure, comparative analysis.
The gradient of described soil profile gradient gas harvester is edaphic gradient, determines the length of soil horizon gradient number and PVC gas collecting pipe according to the research needs, and can determine the hole count of each gradient and the quantity of sensor according to the parameter of required measurement.Described soil profile gradient gas harvester, the external diameter of described PVC gas collecting pipe is identical with the diameter in hole, and sealing is tight; The PVC gas collecting pipe part of basseting must be installed a sealed valve, and valve one end communicates so that take a sample with the syringe interface diameter.
The utility model is compared with existing gas collection method, and the technical progress effect shows:
1. can according to demand this device be arranged in the soil, gather different gradient gas of same soil profile or the different gradient gas of different soils section, so that measure its gas concentration, thereby verify soil profile different depth distribution of gas feature, the concentration gradient and the rate of diffusion of estimation soil profile different depth gas;
2. simple in structure, cheap, time saving and energy saving, be fit to multiple spot, simultaneously, long-term observation.
3. easy to make, flexible and changeable, can be suitable for the synchronous acquisition of the different gradient gas of same soil profile or the synchronous acquisition of the different gradient gas of different soils section according to this device of measurement range while of the needs determination device of studying, can be conveniently used in fields such as agricultural, forestry and Environmental Studies.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is the longitudinal profile structural map of an embodiment of the utility model.
Fig. 2 is the outside drawing of an embodiment of the present utility model.
Among the figure: 1. annular plastic tube, 2.PVC gas collecting pipe, 3. sensor, 4. sealed valve
In Fig. 1,1. annular plastic tubes are divided into 5 gradients, each gradient two holes are arranged, a hole links to each other with 2.PVC gas collecting pipe, the diameter in hole is identical with the external diameter of pipe to guarantee sealing, prevent in the pipeline that gas exerts an influence to gas in the soil and then influences result of study and destroy soil self ecologic equilibrium, the other end of each root pvc pipe is settled a sealed valve, valve closing enters soil to avoid extraneous air by pvc pipe when not gathering gas, when gathering gas the gas collecting device linked to each other with pvc pipe and opens valve and evacuated tube internal memory and stay the collecting work that begins gas sample behind the gas, after the collection again with valve closing; Another hole can be settled temperature, humidity, moisture transducer as required, sensor will stretch out from the tube wall of annular plastic tube with soil and contact to realize real-time monitoring, can after placing sensor, use caulking gum to handle for solving sealing problem in the place, aperture, sensor wire is stretched out the annular plastic tube and can be linked to each other with data acquisition unit, can select long-term or short-term data collector, satisfy different research needs.
Fig. 2, be with Fig. 1 in the outside drawing of identical embodiment.
Embodiment
The soil profile gradient trace gas harvester that utility model shown in Figure 1 provides, the design of its major technique is that gas collecting Guan Yiduan is connected good seal with hole on the annular plastic column, another termination valve, the Push And Release of gas is collected in valve control, draw collection by the gas collecting device during collected specimens, simultaneously sensor is linked to each other with another hole on the annular plastic column, be used to measure other parameter of same gradient soil.The concrete method of sampling is:
1, wanting the soil region of sampling analysis, making a call to a vertical hole with earth boring auger, the slightly larger in diameter in hole is in soil profile gradient trace gas harvester
Annular plastic column diameter, the degree of depth gets final product for just plastic column 1 being nuzzled;
2, sampling apparatus is vertically placed the hole, then the former earthen backfill of taking out, annular plastic column outer wall is closely linked to each other with surrounding soil, thereby avoid in the outside and surrounding soil slit of sampling apparatus gaseous diffusion in the PVC gas collecting pipe 2 of sampling apparatus, sensor 3 also will be buried with soil simultaneously;
3, after instrument installs, with gas collecting device (can select the impermeability syringe of 60mL for use) extracting gases, the openend that PVC gas collecting pipe is exposed at the face of land has valve 4 controls, and the gas of collection deposits Dewar bottle in or with the syringe good seal, directly takes back the laboratory and analyze with gas chromatography.Simultaneously sensor is linked to each other with special-purpose meter reading and read real-time correlation parameter, then can directly the derivation of the data in the meter reading be taken back the laboratory as analyzing data if connect meter reading for a long time.
Foregoing description only proposes as a kind of enforceable technical scheme of the utility model soil profile gradient trace gas harvester, not as the single restrictive condition to its structure itself.Can be according to the kind of size, quantity, gradient and the sensor in the length overall of researcher's needs flexible design device, hole, thus satisfy different research needs and monitoring purpose.
Claims (4)
1. soil profile gradient trace gas harvester, it is characterized in that comprising an annular plastic column that contains porous, all there is the PVC gas collecting pipe of encapsulation process at different parameters sensor and two ends, described annular plastic column is provided with different gradients, contain porous on the same gradient, one of them hole connects the PVC gas collecting pipe identical with the aperture, and other hole connects the different parameters sensor.
2. soil profile gradient trace gas harvester according to claim 1 is characterized in that described annular plastic column, and its length is decided according to the gradient number, and the annulus external diameter is 10～15cm, and internal diameter is 5～10cm.
3. soil profile gradient trace gas harvester according to claim 1, it is characterized in that containing a plurality of gradients on the described annular plastic column, gradient magnitude and quantity need according to research and decide, and two or more holes are arranged on the same gradient, and the same foundation research of hole count needs and decides.
4. soil profile gradient trace gas harvester according to claim 1 is characterized in that described PVC gas collecting pipe, and tube outer diameter is 1～3cm, and consistent with the aperture above the annular plastic column, and is tight with the sealing of annular plastic column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202154641U CN201852726U (en) | 2010-06-04 | 2010-06-04 | Trace gas acquisition device at different soil section gradients |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202154641U CN201852726U (en) | 2010-06-04 | 2010-06-04 | Trace gas acquisition device at different soil section gradients |
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| CN201852726U true CN201852726U (en) | 2011-06-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081746A (en) * | 2013-02-20 | 2013-05-08 | 中国科学院亚热带农业生态研究所 | Root box culture device for researching crop rhizosphere nitrous oxide emission mechanism |
| CN103267659A (en) * | 2013-05-31 | 2013-08-28 | 中国科学院地理科学与资源研究所 | Collection device of greenhouse gases at different depths of soil section |
| CN107132339A (en) * | 2017-07-05 | 2017-09-05 | 贵州师范大学 | It is a kind of to support soil CO of the multiple caliber different depth with GPS2Analyzer |
| 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 |
| CN110907238A (en) * | 2019-12-10 | 2020-03-24 | 杭州电子科技大学 | Layered collection method and device for soil gas |
-
2010
- 2010-06-04 CN CN2010202154641U patent/CN201852726U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081746A (en) * | 2013-02-20 | 2013-05-08 | 中国科学院亚热带农业生态研究所 | Root box culture device for researching crop rhizosphere nitrous oxide emission mechanism |
| CN103267659A (en) * | 2013-05-31 | 2013-08-28 | 中国科学院地理科学与资源研究所 | Collection device of greenhouse gases at different depths of soil section |
| CN103267659B (en) * | 2013-05-31 | 2015-04-22 | 中国科学院地理科学与资源研究所 | Collection device of greenhouse gases at different depths of soil section |
| CN107132339A (en) * | 2017-07-05 | 2017-09-05 | 贵州师范大学 | It is a kind of to support soil CO of the multiple caliber different depth with GPS2Analyzer |
| 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 |
| CN110907238A (en) * | 2019-12-10 | 2020-03-24 | 杭州电子科技大学 | Layered collection method and device for soil gas |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20120604 |