Portable seabed in-situ shallow-surface sediment sampling device

Abstract

The invention discloses a portable seabed in-situ shallow-surface sediment sampling device, and relates to the technical field of seabed sampling. A fixing plate is externally connected to a handle; outer cylinders are fixedly arranged on the fixing plate and evenly distributed on the outer side of a lead screw, the bottom ends of the outer cylinders are conical, open grooves A back to the lead screw are formed in the side faces of the outer cylinders, and open grooves B right opposite to the lead screw are formed in the side faces of the outer cylinders. Each rotating shaft is arranged in thecorresponding outer cylinder; the sampling barrels are arranged on the rotating shafts, and sampling ports corresponding to the open slots A are formed in the side surfaces of the sampling barrels; gears A are fixedly arranged on the rotating shafts and are over against the open slots B of the outer cylinders; the gears B are rotationally arranged on the screw rod, and each gear B is matched withthe three gears A at the same time. The device has the beneficial effects that the defects of complicated operation and low sampling success rate when the seabed sediment samples are obtained by a traditional method can be effectively avoided, and the sediment samples at different layers of the seabed can be obtained by one-time diving operation.

Description

technical field [0001] The invention relates to the technical field of seabed sampling, which can be used to obtain sediment samples of different substrate types under the seabed water-sediment interface, and is especially suitable for in-situ fixed-point sediment sample collection in deep sea extreme environments (cold springs and hydrothermal areas), In particular, it is an adjustable deep-sea multifunctional sampling device operated by an underwater remote-control robot manipulator. Background technique [0002] Marine sediment refers to the general term for various seabed sediments formed under different ocean sediments such as physics, chemistry and biology. The nature of seabed sediment engineering is the prerequisite for laying submarine cables and oil pipelines and building offshore oil drilling platforms; the formation environment of seabed sediments can provide important support for the development of marine oil and gas and seabed mineral resources; Indispensable ...

AI Technical Summary

Problems solved by technology

[0004] However, there are certain shortcomings and deficiencies in these two conventional methods of obtaining seabed sediment samples in extreme environments: 1) The method of fixed-point delivery on the sea surface cannot accurately obtain sediment samples in the investigation and research area, and is often blind and accurate. The delivery location cannot be known, and the typicality of the obtained samples cannot be guaranteed; 2) The in-situ sampling method of the seabed, the success rate of the push core sediment sampling equipment carried by the current ROV (underwater remote control robot) or HOV (manned deep submersible vehicle) Low, even if the sediment samples are collected, the quantity is extremely effective; 3) The two sediment sampling methods are cumbersome and inefficient, and only one sediment sample can be collected each time

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