Equipment for rapidly collecting gas in different water bodies and soil media

Abstract

The invention relates to the technical field of gas separation and collection, in particular to rapid collection equipment for gas in different water bodies and soil media, which comprises a gas-liquid separator, a liquid one-way valve, a beaker, a gas one-way valve, a sealing bottle, a vacuum pump and an injector, the other end of the gas one-way valve is communicated with one end of a gas-liquid separator through a pipeline, a waterproof breathable film is arranged in the gas-liquid separator, a pipe body is installed at one end of the gas-liquid separator, and an inverted funnel sinking into water is installed at the other end of the pipe body. The sealing bottle is sealed; by adopting the gas-liquid separation principle of the waterproof gas-permeable membrane, the gas-liquid separator is specially manufactured to be applied to gas extraction equipment in the water body, so that gas in different water bodies can be quickly collected; the device not only can be applied to a water body, but also can be applied to a soil medium; due to the fact that the vacuum extraction principle is utilized, gas which is not easy to dissolve in water and soluble in water can be further collected.

Description

technical field [0001] The invention relates to the technical field of gas separation and collection, in particular to a rapid gas collection device in different water bodies and soil media. Background technique [0002] At present, the collection of gas samples in water is generally based on the principle of drainage and gas collection: such as figure 2 As shown, sink the glass funnel connected on the gas collecting pipe 22 into the water, close the spring clip 25 when the water surface rises above the spring clip 25; then lift the lower mouth bottle 23 filled with water, so that water is injected into the gas collecting pipe 22 middle. After the gas collecting pipe 22 is filled with water (no air bubbles are allowed), close the spring clips 24 and 26; Move the funnel 21 to the place where the gas escapes from the bottom of the water, open the spring clips 24 and 25, and the gas enters the gas collecting pipe 22 along the funnel 21; after the water in the gas collecting p...

AI Technical Summary

Problems solved by technology

[0005] 1. The principle of water drainage and gas collection relies on the negative pressure formed by the discharged water body to collect water body gas. The negative pressure formed in this way is weak, so that after collecting trace gas, the equilibrium state of gas pressure in the bottle and in the water will be formed, resulting in gas collection. The quantity is small, often unable to meet the sample testing requirements;

[0006] 2. Field surface water sampling is very inconvenient, and usually cannot be done on the shore. It requires repeated collections to collect the required amount of gas, and collecting the amount of gas is slow and time-consuming;

[0007] 3. The device is only suitable for water media, and cannot be applied to gas sampling in soil media;

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