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Rarefaction sludge sampler

A sampler and silt technology, which is applied in sampling devices, undisturbed core extraction devices, wellbore/well components, etc., to achieve the effect of improving efficiency

Active Publication Date: 2010-07-21
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the existing samplers are unable to pick up the flowing thin silt, it cannot meet the needs of some engineering designs

Method used

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  • Rarefaction sludge sampler
  • Rarefaction sludge sampler
  • Rarefaction sludge sampler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Such as figure 1 As shown, the thin silt sampler of the present invention includes a knife edge 1, the tail end of the knife edge 1 is threadedly connected with a guide sleeve 2, a flap seat 3 is slidably connected with the outer wall of the guide sleeve 2, and the tail end of the guide sleeve 2 The outer convex step diameter is greater than the inner diameter of the lower end of the flap seat 3, so that the guide sleeve 2 can slide along the inwall of the flap seat 3 but not break away from the flap seat 3. The outer wall of the flap seat 3 is fixedly connected with a connecting sleeve 32 and a space is left between the inner wall of the connecting sleeve 32 and the outer wall of the guide sleeve 2, and eight umbrella-shaped flaps 31 are annularly arranged on the flap seat 3, and respectively It is rotatably connected with the flap seat 3 and is located between the guide sleeve 2 and the connection sleeve 32 . The connecting sleeve 32 is detachably connected to the l...

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Abstract

The present invention provides a thin silt sampler, which comprises a knife edge, a guiding sleeve fixed and connected with the knife edge, a turning plate seat connected with the outer wall of the guiding sleeve in a sliding way, more than one rotatable umbrella-shaped turning plate arranged on the turning plate seat, a connecting sleeve fixed and connected with the turning plate seat, wherein the umbrella-shaped turning plates are positioned between the guiding sleeve and the connecting sleeve; the present invention also comprises a lower protective sleeve and an upper protective sleeve orderly and removably connected with the connecting sleeve, and the top end of the upper protective sleeve is arranged with a cover plate and a connector; bottom valve type sample barrels are arranged inthe upper protective sleeve and the lower protective sleeve, and the bottom valve type sample barrels comprise sample barrel walls, ball valve seats arranged at the bottoms of the sample barrel walls, and hemispherical valves hinged with the ball valve seats. Because the hemispherical valves are arranged at the bottoms of the sample barrels, the thin silt sampler of the present invention makes fluid thin silt entering into the sample barrels have no leakage, thus realizing the function of extracting thin silt sample which can not be realized by the existing sampler.

Description

technical field [0001] The invention relates to a geological survey tool, in particular to a thin mud sampler. technical background [0002] In the underwater drilling sampling of engineering geological survey, the underwater formation to be sampled generally includes solid silt with certain structural strength, semi-fluid silt, and flowing thin silt without structural strength. Among the existing sampling equipment, most of them are tools for obtaining solid sludge with a certain structural strength. For example, Chinese utility model patent 91201946.8 discloses a sampler for underwater sediment as it is, including drill pipe, drill bit, ring cutter, sample cylinder, some reeds, reed tubes, semi-closed tubes, spoil tubes, etc., which are practical The new technical solution is to use the ring knife to fall due to gravity during the lifting process of the sampler, so that the reed set at the bottom of the sample cylinder loses its support and gathers towards the axis of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/12E21B25/18E21B49/02
Inventor 徐敏生王子平项培林
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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