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Pressure-balanced type portable device for soil gas collection

A soil gas and portable device technology, applied in sampling devices and other directions, can solve the problems of many experimental error factors and constant carrying, and achieve the effects of easy disassembly and carrying, convenient material acquisition and high precision

Inactive Publication Date: 2014-08-06
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a balanced soil gas collection device, to solve the existing problems of the prior art, such as constant carrying, many experimental error factors, etc.

Method used

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  • Pressure-balanced type portable device for soil gas collection
  • Pressure-balanced type portable device for soil gas collection

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] figure 1 with figure 2 The appropriate structures of the gas collection box and the gas extraction device 5 of the preferred embodiment of the present invention are respectively shown. As shown in the figure, the gas collection box includes a top cover 1 , a collection box 3 and a base 7 . The top cover 1 includes a top plate 11 and a cylindrical first barrel 12 , the top plate 11 is sealed on the upper end of the first barrel 12 . The top cover 1 can be made of PVC material, and the length of the first cylinder 12 can be designed as different lengths according to needs. For example, when the disposable gas sampling volume is usually 10ml, the length of the first cylinder 12 can be designed as 20mm. If Usually, the one-time gas sampling volume is 50ml, and the length of the first cylinder 12 can be designed to be 100mm. The...

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Abstract

The invention provides a pressure-balanced type portable device for soil gas collection. The pressure-balanced type portable device comprises a gas collection box and a gas extraction device, wherein the gas collection box mainly comprises a top cover, a collection box and a base; a first piston is arranged in the top cover; and the base comprises an upper part and a lower part which are provided with an adjustable included angle. During a gas collection process, the internal pressure and the external pressure of the collection box are balanced via the up-and-down movement of the first piston, thus reducing the influence of the pressure change in the collection box on the emission of soil gas, ensuring observation accuracy, and shortening observation time; and particularly, the pressure-balanced type portable device is small in sampling area and good in sealing performance. The pressure-balanced type portable device disclosed by the invention can also be applied to a slope environment with a certain angle by designing the base to be an upper base and a lower base which have an adjustable angle. Additionally, the pressure-balanced type portable device disclosed by the invention also has the advantages of being convenient in getting materials, easy to detach and carry, simple to operate, etc.

Description

technical field [0001] The invention relates to a collection and observation system of soil respiration flux that can be used in laboratory control conditions, in the field, and in farmland, and in particular relates to a soil respiration flux suitable for common farmland soil, slope soil, greenhouses and other facility agricultural soils and potted environmental pressures. Balanced soil gas collection device. Background technique [0002] Flux is the amount of material passing through a unit area per unit time. Soil respiration flux refers to the change of gas mass emitted by soil per unit area and per unit time. Soil respiration flux is an important basis for studying soil microbial processes, greenhouse gas emissions and climate change. [0003] Soil respiration studies mostly use closed static chambers. The static box method in the traditional sense is: using the principle of gas flux, a chemically stable box with known volume and bottom area is directly inserted into...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/24
Inventor 武兰芳娄金勇马军花
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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