US 12,007,318 B2
Device and method for in situ penetration measurement of gas transport parameters in unsaturated soil layer
Liangtong Zhan, Zhejiang (CN); Tao Wu, Zhejiang (CN); Song Feng, Zhejiang (CN); and Yunmin Chen, Zhejiang (CN)
Assigned to ZHEJIANG UNIVERSITY, Zhejiang (CN)
Appl. No. 17/639,909
Filed by ZHEJIANG UNIVERSITY, Zhejiang (CN)
PCT Filed Jun. 19, 2020, PCT No. PCT/CN2020/096943
§ 371(c)(1), (2) Date Apr. 8, 2022,
PCT Pub. No. WO2021/042813, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 201910828573.6 (CN), filed on Sep. 3, 2019.
Prior Publication US 2022/0334041 A1, Oct. 20, 2022
Int. Cl. G01N 13/04 (2006.01); G01N 15/08 (2006.01)
CPC G01N 13/04 (2013.01) [G01N 15/0826 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A device for in situ penetration measurement of gas transport parameters in an unsaturated soil layer, comprising:
a gas supply system, a gas concentration display recorder, a gas pressure display recorder, a sleeve, a gas concentration sensor, a gas pressure sensor, a porous gas-permeable tube, and a conical penetration head, wherein a top portion of the porous gas-permeable tube is connected to a bottom portion of the sleeve through a thread, a bottom portion of the porous gas-permeable tube is connected to the conical penetration head through a thread, an inner portion of the porous gas-permeable tube is filled with sand grains, the gas supply system comprises a high-purity inert gas cylinder, a high-pressure air cylinder, a small-flow pressure regulating valve, a large-flow pressure regulating valve, a small-scale air gauge, a large-scale air gauge, a small-scale mass flow controller, a large-scale mass flow controller, and a gas pipeline, an output end of the high-purity inert gas cylinder is connected to one end of the gas pipeline through the small-flow pressure regulating valve, the small-scale air gauge, and the small-scale mass flow controller in sequence, an output end of the high-pressure air cylinder is also connected to one end of the gas pipeline through the large-flow pressure regulating valve, the large-scale air gauge, the large-scale mass flow controller in sequence, another end of the gas pipeline extends into and penetrates the sleeve and communicates with the porous gas-permeable tube at a bottom portion of the sleeve; the gas concentration sensor and the gas pressure sensor are installed in the inner portion of the porous gas-permeable tube, and the gas concentration sensor and the gas pressure sensor are respectively connected to the gas concentration display recorder outside the porous gas-permeable tube and the gas pressure display recorder through data lines thereof.