Device and method for collecting bubble gas in geothermal water

Abstract

The invention belongs to the field of determination of gas content and isotopic compositions and particularly discloses a device for collecting bubble gas in geothermal water. The device comprises a tap water container, a first ball valve, a diaphragm gauge, a second ball valve, a molecular sieve trap, a three-way ball valve, an injector, an inverted glass funnel and a sampler, wherein a gas outlet of the first ball valve is inserted into the tap water container, a gas inlet of the first ball valve and a gas outlet of the second ball valve are connected with an outlet and an inlet of the sampler respectively, the diaphragm gauge is connected with a gauge hatch of the sampler, a gas outlet and a gas inlet of the molecular sieve trap are connected with a gas inlet of the second ball valve and one way of the three-way ball valve, and the other two ways of the three-way ball valve are connected with the injector and the glass funnel respectively. The device has the advantages that the problem of incapability of indicating collected gas amount accurately due to high gas humidity during collection is solved; the pressure of collected gas is higher than an atmospheric pressure, and accordingly the problem that the bubble gas is contaminated by air easily during storage is solved.

Description

technical field [0001] The invention belongs to the field of gas content and isotope composition measurement, and in particular relates to a collection device and a collection method for gas bubbles in geothermal water. Background technique [0002] The deep-source gas that passes through the interior of the earth mainly escapes in two ways, one is to escape directly from the earth's solid rock cracks or fault zones, and the other is to escape in the form of bubbles through geothermal water, the former is directly connected to the corresponding For the sampling device, just flush the gas into the sampling bottle. Since the latter escapes in the form of air bubbles through the surface water source, it is difficult to directly connect to the sampling device for direct collection, so the sampling process is more difficult. [0003] For the gas that escapes through the geothermal water in the form of bubbles, the drainage method is basically used in China to collect it. This met...

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Problems solved by technology

[0004] The object of the present invention is to provide a collection device and method for collecting gas bubbles in geothermal water, which solves the problem that the gas humidity in the collection process is high and cannot accurately indicate the amount of collected gas; and the collected gas pressure is higher than one atmospheric pressure , to solve the problem of being easily polluted by air during the storage process

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