An in-situ soil hydrogen content gas extraction device and method

By designing an in-situ soil hydrogen content sampling device, which utilizes spiral-shaped drilling blades and a sealing structure, in-situ, real-time collection of soil gases was achieved, solving the problems of borehole blockage and gas escape, and improving the accuracy of the detection data.

CN121954571BActive Publication Date: 2026-09-11山东省地质矿产勘查开发局第一地质大队(山东省第一地质矿产勘查院)
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Patent Information

Application Number
CN202610168462.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-02-05
Publication Date
2026-09-11
Estimated Expiration
2046-02-05

AI Technical Summary

Technical Problem

Existing soil gas sampling methods cannot achieve in-situ, real-time collection, and suffer from problems such as borehole blockage and gas escape pollution. In particular, for highly reactive and rapidly diffusing gases such as hydrogen, the sample representativeness is insufficient.

Method used

A soil hydrogen content in-situ gas extraction device was designed, including a base, a protective casing, a sealing casing, and an isolation casing. The device uses spiral-shaped cutting blades to transport debris to form a sealing layer and integrates a ventilation pipeline to achieve in-situ gas collection, thus avoiding gas escape and pollution.

Benefits of technology

It enables in-situ, real-time collection of soil gases, preserving the originality and authenticity of gas samples and improving the accuracy of detection data.

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Abstract

The application provides an in-situ soil hydrogen content gas sampling device and a gas sampling method, and relates to the technical field of soil gas collection.The device comprises a base, a protective cylinder, a drill rod, a sealing cylinder, an isolation cylinder and a driving structure; the drill rod is provided with an air passage for directly collecting soil gas during drilling; the protective cylinder and the isolation cylinder form a storage chamber to prevent external impurities from entering the sampling hole and interfering with the sampling gas; the device can collect in-situ gas while drilling or at a fixed depth, reduces the escape or pollution of the gas during transfer, realizes in-situ soil gas sampling, maximally maintains the originality and authenticity of the gas sample, and improves the accuracy of the detection data.
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