Soil gas sampling system

A sampling system and soil gas technology, applied in the field of soil gas sampling system, can solve problems such as difficult to collect soil gas, limited sampling depth, and poor consistency of sampled gas

Inactive Publication Date: 2015-04-08
BEIJING FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing soil gas sampling systems are difficult to collect a sufficient

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Embodiment Construction

[0025] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of the present invention, unless otherwise specified, the orientation or state relationship indicated by the terms "upper", "lower" and the like are based on the orientation or state relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention.

[0027] In the description of the present invention, it should be noted that...

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Abstract

The invention relates to the field of soil environment detection and provides a soil gas sampling system. The system comprises a gas acquisition device, a multichannel gas transmission device, an air extracting device and a gas storage device. The gas acquisition device comprises multiple gas acquisition pipes which are respectively used to be inserted at different depths of soil to be sampled. Each gas acquisition pipe is provided with several air inlets. The multichannel gas transmission device comprises multiple gas transmission pipes. Ends of the multiple gas transmission pipes are respectively communicated with the multiple gas acquisition pipes. Each gas transmission pipe is provided with a valve. The air extracting device is equipped with an air inlet end and an exhaust end. The air inlet end is connected with the other ends of the multiple gas transmission pipes. The gas storage device is connected with the exhaust end. By the system, long-term and located acquisition of sufficient soil gas at specific depths can be realized. In addition, soil disturbance is little; the system is not limited by sample depth; and sampled gas consistency is good.

Description

technical field [0001] The invention relates to the field of soil environment detection, and in particular provides a soil gas sampling system. Background technique [0002] The gas sampling method of the soil profile has always attracted much attention. In recent years, many scholars have invented a variety of different soil gas sampling devices to solve the problem of gas sampling. Most of them are to dig the shaft profile in advance, and then put the sampling instrument into the gas well. However, due to the distribution of pores on the wall of the sampling tube, the limitation of the sampling depth of the device, and the tightness of the gas, it is difficult to collect a sufficient amount of soil gas at a specific depth, and it is highly disturbing to the soil and the sampling depth is limited. Poor sample gas consistency. Moreover, most of the currently designed sampling devices can only collect a limited number of sampling points. The sampling of multiple sampling poi...

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Application Information

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IPC IPC(8): G01N1/24
Inventor 张宇清刘振秦树高
Owner BEIJING FORESTRY UNIVERSITY
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