Vertical freezing and sampling device and application method thereof

Abstract

The invention discloses a vertical freezing and sampling device and an application method thereof. The sampling device comprises a workboat, an automatic control platform, a lifting system, a liquid-state CO2 supply device, a sampler and an adjusting bracket arranged on the sampler, wherein the automatic control platform, the lifting system and the liquid-state CO2 supply device are sequentially fixed on the workboat, the lifting system is connected with the sampler by virtue of a cable, and the adjusting bracket is arranged at the lower part of the sampler. A hollow copper pipe probe in the sampler is connected with the liquid-state CO2 supply device by virtue of a liquid-state CO2 input pipeline. An automatic level adjusting system in the automatic control platform controls the adjustingbracket, so that the copper pipe probe is vertically inserted into a deposited layer to be frozen and obtain a sample. Compared with the prior art, the vertical freezing and sampling device disclosedby the invention can be used for in situ sampling of deposits in a deep water and shallow water areas, and the copper pipe probe in the sampler is vertically inserted into the deposits, so that sampling success rate under deep water and relatively high flow rate conditions is guaranteed.

Description

technical field [0001] The invention relates to a sampling device, in particular to a vertical freezing sampling device and a method for using the same. Background technique [0002] In natural rivers, the area where surface water and shallow groundwater migrate and mix in both directions is called the hyporheic zone. The hyporheic zone is an active ecotone zone and the main place for the exchange, metabolism and storage of particles and solutes in rivers, which is of great significance to the life cycle of river organisms and river health. [0003] At present, the equipment widely used for bottom sediment sampling mainly includes grab mud sampler and gravity sediment sampler. Among them, the grab mud extractor can only collect surface sediments, which greatly disturbs the samples when used, destroys the original state of the sediments, and cannot meet the increasingly fine sediment detection and analysis; the traditional gravity sediment sampling The gravity sampler relie...

AI Technical Summary

Problems solved by technology

Among them, the grab mud extractor can only collect surface sediments, which greatly disturbs the samples when used, destroys the original state of the sediments, and cannot meet the increasingly fine sediment detection and analysis; the traditional gravity sediment sampling The gravity sampler relies on the gravity of the instrument itself to drop into the sediment, and the sampling depth depends on the gravity of the instrument, which is cumbersome, inconvenient to use, and has a large disturbance to the sample, and the gravity sampler is prone to tilt during sampling, resulting in failure to collect. Sediment samples, low sampling success rate

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