Solid-phase gap gas sampling rod

Abstract

The invention relates to a solid-phase gap gas sampling rod which comprises a front-end shell, a front-end pipe, a gas filtering pipe, a push-pull rod, a rear-end shell and a gas guide pipe, the rightend of the front-end shell is connected with the left end of the rear-end shell, the left end of the front-end shell is of a reduced structure and is provided with an opening, and the right end of the rear-end shell is provided with a through hole; a front end pipe is arranged in the reduced structure of the front end shell, and the first end of the front end pipe is arranged corresponding to theopening to form an inlet end; the second end of the front end pipe is connected with the first end of an air filtering pipe arranged in the front end shell; the push-pull rod is arranged in the air filtering pipe, and the second end of the push-pull rod sequentially penetrates through the second end of the air filtering pipe and the through hole of the rear-end shell to form an extending part; the gas guide pipe is connected with the right end of the rear-end shell. The sampling rod can be prevented from being blocked when penetrating into a solid gap, high air tightness during air exhaust isguaranteed, and the problem that an existing gas sampling rod is prone to being blocked during air exhaust in a solid-phase gap is solved.

Description

technical field [0001] The invention relates to a measuring tool, in particular to a solid-phase interstitial gas sampling rod. Background technique [0002] In practical engineering applications, it is often necessary to measure the gas in the voids of loose solid phases, such as the gas in the soil voids, the gas in the ice and snow voids, the gas in the gravel voids, the gas in the compost product voids, and so on. Most of the existing gas detectors are designed for pure gaseous substances, such as oil storage tank headspace gas, pipeline gas, downhole channel gas, etc., and do not need special gas sampling rods, or are equipped with simple hollow rod gas sampling rods. The small hole in the front of the hollow rod is to prevent substances other than gas from entering the rod, but when detecting the gas in the solid phase gap, some solids have high density and viscosity, and the sampling rod needs to overcome a lot of resistance to make the existing gas sampling rod Inse...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a solid-phase interstitial gas sampling rod, which solves the problem of solid clogging the existing sampling rod, reduces the frequency of manually dredging the gas sampling tube, and facilitates the sampling of solid-phase interstitial gas Detection process

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