Multi-tube-box type integrated sampler suitable for deep-sea sediment sampling operation

Abstract

The invention provides a multi-tube-box type integrated sampler suitable for deep-sea sediment sampling operation. The multi-tube-box type integrated sampler comprises a scraper knife connecting rod system, a box type sampling system, a multi-tube sampling system and an in-situ hydrological parameter acquisition system, wherein the scraper knife connecting rod system comprises a lifting fence connected with the driving mechanism and a release lock catch fixed on the bracket, and is connected with a scraper knife connected with the bottom end of the sampler through a connecting rod; the box type sampling system is provided with a ballast lead block, the top is provided with a sealed box cover, the bottom is provided with a sampling box body, the outer side is provided with a fixing plate, and the columnar sampling system is connected to the fixing plate through a small fixing plate; the main body of the multi-tube sampling system is a sampling tube which is provided with an upper cover at the top and a lower cover at the bottom, and is provided with a spring mechanism for sealing. Single-time lowering and in-situ collection of the multi-tube sampler, the box type sampler and hydrological information are realized, and ship time consumed by lowering and recycling the sampler is fully utilized.

Description

technical field [0001] The invention belongs to the technical field of ocean observation, and in particular relates to a multi-pipe-box integrated sampler suitable for deep-sea sediment sampling operations. Background technique [0002] For sampling marine surface sediments, box samplers and multi-tube samplers are commonly used. The box sampler can obtain a certain thickness of surface sediments, while the multi-tube sampler can obtain surface sediments with a complete deposition sequence and obtain the overlying water. They have different emphases and are important sampling in the field of ocean observation and research. means. [0003] However, the currently used sampling methods have the following disadvantages and deficiencies: [0004] 1. The box sampler can only be carried on the observation platform for box sampling. If multi-tube sampling is required, it needs to be replaced with a multi-tube sampler for re-sampling. The ship time consumed by single-station box a...

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Problems solved by technology

The ship time consumed by single-station box and multi-tube sampling is about twice that of a single sample, which is extremely unfavorable for sampling work in tight scientific research voyages and extreme field environments (such as polar sea ice environments)

[0005] 2. After the existing box sampler is lowered and recovered, if the multi-tube sampler needs to be lowered again, the bottom point of the box sampler and the multi-tube sampler cannot be completely coincided, and in-situ sampling cannot be achieved

The samples collected by the two are often used for comparative research. Although the longitude and latitude are very close, due to the complex and changeable seabed topography, the chemical characteristics and material composition of the samples may be quite different.

[0006] 3. The structure of the existing multi-tube sampler equipment is relatively complex, with many parts and components, and it takes a long time to assemble and disassemble

However, during the process of lowering and recovering the sampler in seawater, it occupies the sampling vessel for the longest time, but cannot perform any in-situ data collection

If the sampling station needs the hydrological information of the sediment sampling station, it can only rely on the CTD lowered amidship deck for data collection, and it cannot cover the bottom water body close to the seabed sediment

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