Collecting device of different depth soil gas

A soil gas and gas collection technology, applied in the direction of measuring devices, sampling, instruments, etc., can solve the problems of energy consumption, high price, and cost increase, and achieve the effects of low price, convenient operation, and simple structure

Inactive Publication Date: 2009-05-27
YANGZHOU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

The defect of this method is that due to the relatively large clay pipe head, it is difficult to take it out after being buried in the soil, especially when it is buried in the soil below 50cm. Often it can only be left in the soil after the test is over, so that it cannot be used repeatedly

Method used

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  • Collecting device of different depth soil gas

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Experimental program
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Effect test

Embodiment Construction

[0011] Such as figure 1 Shown:

[0012] The gas collection tube 1 is made of stainless steel hollow tube. Depending on the depth of collection, different lengths of stainless steel tubes can be cut. The lower end, that is, the top end is closed and sharpened into a pointed shape, and about 6 holes with a diameter of 1mm are drilled about 1cm above the tip. Small hole; the connecting pipe is divided into two sections, one section is hard tube 3 (hard plastic tube), the other section is hose 2 (thick-walled silicone tube), hose 2 is connected with gas collection tube 1 to solve the problem of hard tube 3 When directly connected with the gas collection tube 1 made of stainless steel, it is easy to fall off and difficult phenomenon; one end of the hard tube 3 is connected to the gas collection tube 1 through the flexible tube 2, and the other end of the hard tube 3 is connected to a three-way (medical three-way valve ); the tee includes two tees connected in series, one is the fr...

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Abstract

The invention relates to a collector for collecting gas at different depths soil, which has a structure that the top end of a gas collecting tube is tip-shaped and closed with a plurality of pores arranged around the tip of the gas collecting tube which is connected with a connecting tube, the other end of the connecting tube is connected with a tee the other end of which is connected with the front end of an injector. The invention solves the defect existed in the prior soil gas collecting box and gas collecting bag. The invention, which can adapt different climate condition and meet the requirement of extensively collecting gas at different depths soil, reduces disturbance to soil, has the advantages of unnecessary of preembedding and additional power, simple structure, convenient operation, low cost, time saving and labor saving, and adaptability for simultaneously multi-point observation.

Description

technical field [0001] The invention relates to soil gas diffusion and soil greenhouse gas emission, in particular to a collection device for collecting soil gas at different depths. Background technique [0002] Prior to the present invention, research on soil gas diffusion characteristics and soil greenhouse gas emissions often required accurate measurement of soil gas composition and concentration, and accurate collection of soil gas samples was an important prerequisite. The existing collection methods and their defects mainly include: [0003] 1. Use soil gas collection box, including gas collection box, gas collection bag, suction pump, gas collection tube, protection tube, etc. The collection method is to insert the gas collection tube into the protective tube, use an air suction pump to cause negative pressure in the gas collection tube, and suck the soil air into the gas collection box. The disadvantage of this method is that the equipment is expensive and require...

Claims

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Application Information

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IPC IPC(8): G01N1/26
Inventor 王小治封克尹微琴单玉华赵海涛
Owner YANGZHOU UNIV
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