Hydraulically driving seabed multi-column shaped sampling and sealing system

Abstract

The invention relates to benthonic sampling equipment, and aims at providing a hydraulically-driven system for sampling and sealing a benthonic multibarrel columnar sample. The system comprises a plurality of tubular samplers with ball valves for sealing and a principal axis in vertical direction; a crossed hinge is movably sleeved on the principal axis; the principal axis of the upper part and the lower part of the crossed hinge is respectively provided with a principal axis anchor ear or a positioning key for limiting the moving distance of the crossed hinge; a plurality of supporting frames are fixed on a circular tube of the outer layer; the tail end of the supporting frame is a supporting pin; and the adjacent supporting frames are connected through a bracket. The benthonic sampling equipment can avoid the situation that sediment on the surface layer is dispersed and a sample is squeezed or shaken to fall off caused by the pressure wave effect before sampling and save the space and mechanism setting; simultaneously, after the sampling is finished, the benthonic sampling equipment can make the sample directly enter a pressure maintaining cylinder for pressure maintenance, realize the function of compression and pollution resistance, and keep that the sampler is always positioned in a vertical position in the seabed with complex terrain when the sampler is in a working state.

Description

technical field [0001] The invention relates to seabed sampling equipment, more specifically, to a hydraulically driven multi-pipe column sample sampling and sealing system on the seabed. Background technique [0002] For the study of seabed organisms, the most commonly used method is to retrieve samples from the seabed and carry out research on a scientific research vessel. The way the mechanical release mechanism drives the sampling tube for sampling is to use the mechanical structure design of the equipment to allow the sampling tube to be directly inserted into the sediment for sampling under the action of gravity, which is passive sampling. [0003] At present, among the shipborne sediment sampling equipment in our country, the equipment that can obtain higher quality sediment samples is the multi-tube sampler and sediment fidelity sampler. Because the multi-tube sampler cannot be fidelity, the sediment fidelity sampler can be used as a reference. The common point of ...

AI Technical Summary

Problems solved by technology

[0006] 2) In order to maintain pressure, after the sampling is completed, the sediment sample is pulled into the pressure-holding cabin for pressure-holding, and its mechanical structure will inevitably produce a strong impact when pulling the sediment sample into the pressure-holding cabin and sealing, As a result, the sediment sample was vibrated, and sometimes the sample even fell off;

Images