Anti-pollution anti-pressure seal assembly of seabed tubular sampling instrument

Abstract

The invention relates to a sealing component and aims at providing an antipollution pressure-resistant sealing component of a benthonic tubular sampler. The component comprises a tubular sampling tube; the outside of the sampling tube is sleeved with a pressure maintaining cylinder body; a flange at the tail end of the pressure maintaining cylinder body is connected with a valve body of a ball valve; the valve body of the ball valve is connected with a valve rod driving device through a valve rod; the valve rod driving device consists of a double rack gear mechanism; a hydraulic cylinder for supplying power is connected with a rack; a gear and the valve rod are coaxial; and the rack and the gear are engaged with each other. The invention provides the valve which has a plurality of spheres and is provided with a driving mechanism respectively, realizes the pressure-resistant antipollution function, improves the gravity influence between two spheres and achieves the action of double insurance on the pressure maintaining of the sample; as a lining piston is used as the sealing component at one end of the pressure maintaining cylinder body, the space and the mechanism setting are saved; simultaneously, after the sampling is completed, the sealing component can make the sample directly enter the pressure maintaining cylinder for pressure maintaining and can also solve the problem that the sample is shaken to fall off after the sampling.

Description

technical field [0001] The invention relates to a sealing assembly, more specifically to an anti-pollution and pressure-resistant sealing assembly for a submarine tubular sampler. 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. [0004] After the sampling ...

AI Technical Summary

Problems solved by technology

[0006] When the mechanical structure pulls the sediment sample into the pressurized cabin and seals it, the inevitable strong impact will vibrate the sediment sample, and sometimes the sample will fall off

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