Vertical freezing and sampling device and application method thereof

Abstract

The invention discloses a vertical freezing sampling device and its use method. The sampling device includes an operation ship, an automatic control platform, a lifting system, a liquid CO2 supply device, a sampler and an adjustment bracket installed on the sampler, an automatic control platform, a lifting The system and the liquid CO2 supply device are fixed on the work boat in turn, the lifting system is connected with the sampler through cables, and the adjustment bracket is located at the lower part of the sampler. The hollow copper tube probe in the sampler is connected to the liquid CO2 supply device through the liquid CO2 input line. The automatic leveling system in the automatic control platform controls and adjusts the bracket, so that the copper tube probe is vertically inserted into the deposition layer, and the sample is frozen and collected. Compared with the prior art, the present invention can be used for in-situ collection of sediments in deep water and shallow water areas, and the copper tube probe in the sampler is vertically inserted into the sediments, ensuring the success rate of sampling in deep water and higher flow rates.

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 in

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