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Negative pressure synchronous collection method of soil profile gradient gas sample and its special equipment

A technology of soil profile and synchronous collection, applied in the direction of sampling device, measuring device, sampling, etc., can solve the problem of single collection, etc., and achieve the effect of simple method

Inactive Publication Date: 2005-11-09
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiency of single collection in the prior art, the object of the present invention is to provide a kind of negative pressure synchronous collection method of the soil profile gradient gas sample that can realize synchronous collection to the different gradients of the same soil profile and the different gradient gas of different soil profiles and special device

Method used

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  • Negative pressure synchronous collection method of soil profile gradient gas sample and its special equipment
  • Negative pressure synchronous collection method of soil profile gradient gas sample and its special equipment
  • Negative pressure synchronous collection method of soil profile gradient gas sample and its special equipment

Examples

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Effect test

Embodiment 1

[0019] A negative pressure synchronous collection method of a soil profile gradient gas sample in the present invention is to vertically place a group of gas well units 11 into different positions of the same section of the soil to be measured, and each gas well unit 11 is connected with the pipe fitting 3 and the negative pressure device 2 to realize the same Synchronous collection of soil profile and gas samples with different gradients; before gas collection, negative pressure device 2 is used to remove residual gas in gas well 1 and pipe fitting 3, and the gas to be measured at different positions of the soil profile passes through the air inlet of gas well unit 11 12 Diffusion fittings 3 for synchronous collection of gas after full balance;

[0020] Special device of the present invention such as image 3 , Figure 4a~4d As shown, it is mainly composed of a gas well 1 and a negative pressure device 2, wherein the gas well 1 is welded together in series by 10 gas well uni...

Embodiment 2

[0029] The difference from Example 1 is:

[0030] The negative pressure synchronous collection method of soil profile gradient gas samples of the present invention is to place a group of gas well units 11 into different positions of different soil profiles of the soil to be measured, and each gas well unit 11 is connected with the pipe fitting 3 and the negative pressure device 2 to realize Synchronous collection of gas samples with different soil profiles and different gradients; before gas collection, the negative pressure device 2 is used to remove the residual gas in the gas well 1 and the pipe fitting 3, and the gas to be measured at different positions in the soil profile passes through the air intake of the gas well unit 11 Hole 12 is diffused with pipe fitting 3, and the gas is collected synchronously after being fully balanced;

[0031] The negative pressure diverter 21 is a plastic cylinder 212 with a folded structure; during operation: a group of gas well units 11 a...

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Abstract

A group of gas well units is vertically put into different positions at the same section of the soil to be measured. Each gas well unit and the pipe fitting are connected to the negative pressure unit. Before sampling the gas, the negative pressure unit is used to remove the residual gas in gas well unit and the pipe fitting. The synchronous sampling gas is carried out after the gas to be measured in different positions at the same section through the gas well unit is fully balanced. The dedicated device consists of the gas well unit with multiple air inlets and air outlets as well as the negative pressure unit composed of the multiple flow diverters, the plates for applying the forces and the supporting plates. The flow diverters with negative pressure through the pipe fitting and air holes are connected to the gas well units.

Description

technical field [0001] The invention relates to soil gas sample collection in agriculture, forestry and environmental research, in particular to a negative pressure synchronous collection method and a special device for soil profile gradient gas samples. Background technique [0002] The method of non-destructive collection of gas samples in soil profiles has been attracting much attention. For a long time, when people solve the gas collection at different positions of the soil profile, the usual method is to obtain gas samples of different soil profiles one by one (such as figure 1 shown), or to obtain gas samples at different positions of the same soil profile one by one (such as figure 2 As shown), the result is that it is difficult to realize the simultaneous collection of gases with different gradients in the same soil profile, and the syringes are used to manually sample one by one. Contents of the invention [0003] In order to overcome the deficiency of single c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22G01N1/26
Inventor 韩士杰张军辉周玉梅
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI