Multilayer water sampling method and multilayer water sampling device

Abstract

The invention belongs to the technical field of deep water sampling, and discloses a multilayer water sampling method and a multilayer water sampling device. The multilayer water sampling method comprises the steps: firstly, connecting top covers and bottom covers of a plurality of water sampling bottles to a plurality of release modules respectively and are in an open state, wherein the release modules are electrically connected with a plurality of acoustic receiving ends; connecting a plurality of water sampling bottles through a winch cable and putting the water sampling bottles into deep water; sending a first acoustic signal to an acoustic receiving end through an acoustic transmitting end to detect the depth of the water sampling bottle; sending a second acoustic signal to the acoustic receiving end through the acoustic transmitting end, wherein the release module releases the top cover and the bottom cover to seal the water sampling bottle so that the water sampling bottle is in a closed state, and one-time sampling is completed; and adjusting the length of the winch cable, wherein the multiple water sampling bottles achieve sampling at different depths. The underwater acoustic control principle is adopted to obtain the depth of the water layer where the water sampling bottle is located and water sampling of the water sampling bottle, sample collection of seawater in multiple depth water layers is completed through one-time putting, the structure is simple, the cost is low, and the water sampling efficiency is high.

Description

technical field [0001] The invention relates to the technical field of deep water harvesting, in particular to a multi-layer water harvesting method and a water harvesting device. Background technique [0002] Analyzing the physical and chemical properties of seawater is a routine means for human beings to understand and study the ocean, and the water collector is an important equipment for obtaining seawater for analysis. At present, there are two main types of water collectors. One is to control the opening and closing of water bottles through cables to collect seawater samples from multiple water layers at different depths; the other is to collect seawater samples at a certain depth through mechanical triggering. The former has high collection efficiency and can complete the collection of seawater in multiple water layers through one retraction, but it needs a special coaxial armored cable winch to cooperate. The winch is expensive, occupies a large volume, and increases ...

AI Technical Summary

Problems solved by technology

The former has high collection efficiency and can complete the collection of seawater in multiple water layers through one retraction, but it needs a special coaxial armored cable winch to cooperate. The winch is expensive, occupies a large volume, and increases operation and maintenance costs; the latter has a simple structure , but the sampling efficiency is extremely low, and only a single depth of seawater can be collected at a time, which cannot quickly meet the needs of profile measurement

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