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Amphibious soil profile gas in-situ collecting device

A soil profile, flood and drought dual-use technology, applied in the direction of sampling devices, etc., can solve the problems of long time required for gas diffusion stability, less gas collection, easy permeable water accumulation, etc., to achieve low cost, good waterproof, breathable high rate effect

Inactive Publication Date: 2012-07-25
HUNAN AGRICULTURAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Existing in-situ gas collection devices for soil profiles generally use internal sampling tubes or silicone tubes for field installation. Not only are they easy to permeate water when flooded, low air permeability, long time required for stable gas diffusion, and small amount of gas collection. Disadvantages, and are easily damaged by the installation process, plant roots and soil small animals, and are easily damaged in stony soil or soil with high sand content

Method used

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Embodiment Construction

[0012] see figure 1 and figure 2 , the present invention is a soil profile gas in-situ collection device, which includes an outer protection tube 1 and an inner sampling tube 2, the walls of the outer protection tube and the inner sampling tube are covered with ventilation holes 11, 21, see image 3 and Figure 4 , the outer wall of the inner sampling tube 2 is sealed and pasted (can be sealed and pasted by waterproof silica gel) with a waterproof and breathable membrane 3, the waterproof and breathable membrane 3 is made of high molecular polyethylene material, and a gauze 4 is arranged outside the waterproof and breathable membrane 3. In this embodiment, the gauze 4 is a 300-mesh nylon gauze. One end of the device is sealed with a first silica gel plug 5, and the other end is sealed with a second silica gel plug 7 with a gas conduit 6 in the middle. One end of the gas conduit 6 extends into the middle of the inner sampling tube 2, and the other end extends out of the oute...

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Abstract

The invention relates to an amphibious soil profile gas in-situ collecting device, which comprises an outer protecting tube and an inner sampling tube which are made of polrvinyl chloride, wherein air vents are fully distributed on a wall of the outer protecting tube and a wall of the inner sampling tube; a waterproof and breathable film made of polyethylene is pasted on an outer wall of the inner sampling tube in a sealing way; a gauze is pasted outside the waterproof and breathable film; two ends of the outer protecting tube and the inner sampling tube are respectively sealed by adopting a first silicone plug and a second silicone plug with the middle part being provided with a gas conduit in a penetrating way; one end of the gas conduit is stretched into the middle part of the inner sampling tube; and the other end of the gas conduit is extended out of the outer protecting tube and is sealed by a third silicone plug. The device is simple and convenient to manufacture and use, is convenient to recover and utilize, has low cost, durability, good waterproofness, high air permeability and larger sample volume, is amphibious, can be applied in soil with high contents of rocky soil and sand grains, and can be used for effectively preventing a field installation process, plant roots and soil animals from damaging the device.

Description

technical field [0001] The invention relates to the field of gas collection equipment, in particular to a soil profile gas in-situ collection device for both water and drought. Background technique [0002] Existing in-situ gas collection devices for soil profiles generally use internal sampling tubes or silicone tubes for field installation. Not only are they easy to permeate water when flooded, low air permeability, long time required for stable gas diffusion, and small amount of gas collection. Disadvantages, and it is easy to be damaged by the installation process, plant roots and soil small animals, and it is extremely easy to damage in stony soil or soil with high sand content. Contents of the invention [0003] The technical problem to be solved by the present invention is: aiming at the above-mentioned deficiencies in the prior art, to provide a water-dry and dry soil profile gas in-situ collection device with good water resistance and high air permeability, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
Inventor 盛浩周萍张杨珠周清廖超林罗莎李腾毅
Owner HUNAN AGRICULTURAL UNIV
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