Positive-pressure pneumatic type automatic water sample sampler

Abstract

The invention discloses a positive-pressure pneumatic type automatic water sample sampler comprising a sampling water storage bin, a counter weight bin and a high-pressure gas storage pot, wherein the upper part of the sampling water storage bin is provided with a sampling port; a gas-liquid piston cylinder is arranged under the sampling port and separated into an upper gas cavity and a lower liquid cavity through a piston plate; the cylinder wall at the bottom of the lower liquid cavity is provided with a liquid outlet; the liquid outlet is provided with a liquid drainage one-way valve; the upper gas cavity of the gas-liquid piston cylinder and the high-pressure gas storage pot are connected through a pipeline; the pipeline is provided with an environment pressure control valve; the bin wall of the counter weight bin is provided with a seawater inlet / outlet through hole; a gas bag is arranged in the counter weight bin; a gas inlet of the gas bag and the high-pressure gas storage tank are connected through a gas inlet pipeline; the gas inlet pipeline is provided with a gas inlet control valve of the gas bag; the cylinder wall at the bottom of the lower liquid cavity is provided with a pressure triggering button matched with the gas inlet control valve of the gas bag. By adopting the underwater pneumatic technology, a water sample with the set depth can be automatically sampled, the positive-pressure pneumatic type automatic sampler can automatically reset and can be applied to a variety of occasions, and a collected sample can be taken out.

Description

technical field [0001] The invention relates to a water sample sampler, in particular to a positive pressure pneumatic water sample automatic sampler. Background technique [0002] With the development of the ocean, the extraction technology of ocean water samples has been paid more and more attention. There are many ways to extract marine water samples. According to their working methods, there are mainly sampling methods such as artificial diving, pipeline pumping, and mechanical equipment diving. There are various problems in these sampling methods, such as sampling depth, sampling volume, whether sampling will cause pollution, and whether the scope of application is wide or not. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a device with reasonable design and convenient use, which utilizes the compressed gas carried by the equipment to have a pressure higher than the ambient water depth, and uses underwate...

AI Technical Summary

Problems solved by technology

There are various problems in these sampling methods, such as sampling depth, sampling volume, whether sampling will cause pollution, whether the scope of application is wide, etc.

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