Bolt-free gravity piston type long cylindrical sediment fidelity sampler

A piston type and sampler technology, applied in the direction of sampling devices, etc., can solve the problems of waste of exploration resources, easy jamming, sampling failure, etc., and achieve the effects of avoiding sample pressure holding failure, improving sealing performance, and increasing sampling depth

Inactive Publication Date: 2010-01-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the locking tongue mechanism has the problems of low reliability and easy jamming, which often leads to sampling failure and wastes various exploration resources

Method used

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  • Bolt-free gravity piston type long cylindrical sediment fidelity sampler
  • Bolt-free gravity piston type long cylindrical sediment fidelity sampler
  • Bolt-free gravity piston type long cylindrical sediment fidelity sampler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In conjunction with the accompanying drawings, the present invention will be described in detail below through specific embodiments.

[0027] The gravity piston-type long columnar sediment fidelity sampler without lock tongue in the present invention includes a weight mechanism, a hanging frame, a fidelity sampling cylinder, a diversion cabin 2, an accumulator 3 and a sealing cabin 4; The mechanism includes a weight 5 , a weight cable 6 and a lever 7 . The central part of the diversion cabin 2 is a tube for passing through the fidelity sampling cylinder, and a deflector is arranged on the outer wall of the tube. The accumulator 3 is fixed in the diversion chamber 2, and the accumulator 3 is connected to the inside of the fidelity sampling cylinder through a pipeline, and a two-way valve 8 is arranged on the pipeline.

[0028] The fidelity sampling cylinder includes a fidelity cylinder body 1, a lining cylinder 22 and a cutter head 10 with a petal mechanism 9. The fidel...

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PUM

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Abstract

The invention relates to a submarine sampling device and aims at providing a bolt-free gravity piston type long cylindrical sediment fidelity sampler. The sampler comprises a fidelity sampling barrel, a stream guidance cabin, an accumulator, a hermetic cabin, a movement weight mechanism, a hanging bracket, and the like. The stream guidance cabin is sleeved with the upper end of a fidelity barrel body; and the hermetic cabin is movably sleeved with the fidelity barrel body and separated from the stream guidance cabin. The hanging bracket comprises plywood, a piston, a main cable and a hermetic cabin cable, wherein the main cable penetrates through the plywood and connects with the piston positioned in a bushing; and the hermetic cabin cable penetrates through the plywood and connects with the upper end of the hermetic cabin. The bolt-free gravity piston type long cylindrical sediment fidelity sampler based on sampling caliber optimization increases the sampling depth. The sampler scheme of a bolt-free mechanism avoids sample pressure maintaining failure caused by the miswork of a bolt. Based on a water flushing technology on the wall of a cofferdam, the sampler enhances the sealing property of the lower seal of the lower hermetic cabin.

Description

technical field [0001] The invention relates to a seabed sampling device, in particular to a gravity piston type long columnar sediment fidelity sampler without locking tongue. Background technique [0002] The investigation and evaluation of seabed gas hydrate resources usually adopt the method of bottom-like reflection surface (BSR) on the seismic section, but a large number of data show that BSR is not a direct indication of the existence of hydrates, resulting in distortion or distortion of the extracted information. At the same time, since hydrates can only exist stably at low temperature and high pressure, it is difficult to obtain samples by conventional sampling methods, and the cost of drilling is too high. [0003] Chinese invention patent CN1616944A discloses a "fidelity sampling integrated deep-sea sediment sampler", which can take samples of sediment, water, gas and natural gas hydrate on the seabed, and carry out heat preservation and pressure maintenance. The...

Claims

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Application Information

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IPC IPC(8): G01N1/10G01N1/12G01N1/22
Inventor 姜振军陈家旺李世伦顾临怡金波叶瑛周博余平陶军盛堰
Owner ZHEJIANG UNIV
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