Diffusion gas flushing system

Abstract

The invention discloses a washing system for a diffusion gas. The washing system comprises a gas-liquid separator and a water pump, wherein the gas-liquid separator comprises a cavity chamber and a partition plate; an exhaust port for discharging the diffusion gas in liquid is formed in the upper end of the cavity chamber; a first liquid outlet and a second liquid outlet, through which the liquid passes into and out are formed in the lateral wall of the cavity chamber; two ends of the partition plate are fixedly connected to the lateral wall inside the cavity chamber to partition the first liquid outlet and the second liquid outlet in two sides of the partition plate; the upper end of the partition plate is higher than the positions of the first liquid outlet and the second liquid outlet; the lower end of the partition plate is lower than the positions of the first liquid outlet and the second liquid outlet; a gap is formed between the lower end of the partition plate and the bottom of the cavity chamber; one end of the water pump is connected with the first liquid outlet; the water pump is used for providing flowing power of the liquid in the washing system for the diffusion gas. The washing system has a good washing effect and ensures that gas-liquid separation is thorough by providing the partition plate.

Description

technical field [0001] The invention relates to the field of unsaturated soil measurement, in particular to a diffusion gas flushing system. Background technique [0002] In geotechnical engineering, the research on the properties of unsaturated soil has always attracted much attention. Among them, the axial translation technique is the most commonly used test technique at present. [0003] Hilf proposed the axial translation technique, by increasing the pore gas pressure u a to make the pore water pressure u w Reach a positive value to avoid gasification in the drainage system. The principle of axis translation technology is based on the properties of equations in mathematics. The matrix suction S is equal to the pore air pressure u a and pore water pressure u w The pressure difference is, S=u a -u w . As the gas pressure increases, the total stress σ is increased to maintain the net stress (σ-u a )constant. The forces experienced by an unsaturated soil under rea...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is that in the unsaturated soil measurement process, there is no barrier between the liquid outlet and the gas outlet in the prior art, and a part of the diffused gas is easy to enter the liquid outlet and remain in the liquid instead of flowing from the gas outlet to the liquid outlet. The exhaust port is discharged, the flushing effect is poor, and the gas-liquid separation is not complete; the manual operation is used for flushing, and the artificial random error has a great influence on the measurement results

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