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Auto-balancing secondary pressure maintaining sediment sampler

A technology of secondary sampling and secondary pressure holding, applied in the field of in-situ analysis and detection of deep-sea sediments, can solve problems such as unfavorable pressure stability, affecting detection results, polluting samples, etc., and achieve the effect of overcoming the requirements of space and weight

Active Publication Date: 2017-03-29
ZHEJIANG UNIV
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  • Description
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Problems solved by technology

Although some in-situ characteristics of the pressure-holding sample can be detected in this way, drilling cuttings will be generated due to the need to drill holes in the sampling tube, which will contaminate the sample and affect the test results
At the same time, if it is necessary to test the sample in all directions, multiple sets of special tools or drilling multiple holes are required, which is costly and not conducive to maintaining stable pressure

Method used

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  • Auto-balancing secondary pressure maintaining sediment sampler
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  • Auto-balancing secondary pressure maintaining sediment sampler

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0027] Such as Figure 4 A self-balancing secondary pressure-holding sediment sampler shown mainly includes a secondary sampling mechanical structure part and a pressure self-balancing part.

[0028] The mechanical structure part of secondary sampling mainly includes two sub-parts of transfer and sampling. The transfer part mainly includes a transfer cylinder 13, a transfer cylinder end cap 6, a transfer cylinder cap 7, an accumulator A1, an accumulator connection block 2, a capillary 3, a capillary pressure ring 4, a capillary pressure cap 5, a flange A14, Ball valve A16. The sampling part mainly includes a flange B17, a hoop 18, a ball valve B19, a pressure holding cylinder 20, a small sample tube 24, a flange C21, a connecting sleeve 25, and a hydraulic cylinder 22.

[0029] like figure 1As shown, one end of the transfer cylinder 13 of th...

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Abstract

The invention relates to in-situ analysis and detection of deep-sea sediments, and aims at providing an auto-balancing secondary pressure maintaining sediment sampler. The auto-balancing secondary pressure maintaining sediment sampler comprises a secondary sampling mechanical structure part and a pressure auto-balancing part, wherein the secondary sampling mechanical structure part comprises a transferring part and a sampling part. According to the experiment needs, a proper amount of sediment samples under pressure can be obtained, the requirements of a detection platform for space and weight of a device are met, and the in-situ detection and analysis can be directly conducted. In this way, researchers can be helped to accurately acquire the information of the properties of the deep-sea sediments, and the sampler is beneficial to subsequent exploration and development of the marine bottom sediments.

Description

technical field [0001] The invention relates to the field of in-situ analysis and detection of deep-sea sediments, in particular to a self-balancing secondary pressure-holding sediment sampler. Background technique [0002] With the successful development and sea trials of the natural gas hydrate gravity piston-type fidelity sampler, my country has made a major breakthrough in the acquisition and fidelity of deep-sea sediments, but the post-treatment technology of natural gas hydrate is still relatively backward. [0003] In order to narrow down this shortcoming, domestic researchers have started research in this area, but due to the weight and volume of the fidelity sampling device is too large, it cannot be directly used for analysis and detection. In order to analyze the characteristics of the sediment, domestic laboratories generally adopt the method of depressurizing the entire sediment sample and taking out a part for detection and analysis. This practice is not condu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08
CPCG01N1/08
Inventor 陈家旺张永雷孙瑜霞郦炳杰朱黄超
Owner ZHEJIANG UNIV
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