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Pressurization device based on frost heaving force

A technology of pressurization device and frost heave force, which is applied in the direction of discharge machinery, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of device frost heave damage, cracking failure, uncontrollable freezing sequence, etc., and achieve a mild process Controllable, high-pressure effects

Active Publication Date: 2020-09-29
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this device that uses tension to break rocks is only suitable for flat rock surfaces, and the freezing sequence cannot be controlled during the overall freezing process, which may easily cause frost heave damage or crack failure of the device itself.

Method used

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  • Pressurization device based on frost heaving force
  • Pressurization device based on frost heaving force
  • Pressurization device based on frost heaving force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The first embodiment of the present invention: figure 1 with figure 2 As shown, a first shell A1 with a circular outer contour and a hollow first freezing tube A11 connected symmetrically with respect to the first shell A1; the center of the first shell A1 is transversely symmetrically provided with a through hole, the The through hole is similar to a through waist-shaped hole structure; the through hole is provided with a first expansion portion A3 that linearly slides relative to the circular center of the first housing A1, and the structure of the first expansion portion A3 can be like figure 2 The first expansion part B3 shown in the figure is in a "T" shape as a whole, and the outer free end is an arc-shaped plate adapted to the drilling. When the first expansion portion A3 extends to both sides under force, it then crushes the rock; in order to provide power to the first expansion portion A3, a sequential freezing device is provided on the first freezing pipe A11 a...

Embodiment 2

[0029] The second embodiment of the present invention: such as image 3 with Figure 4 As shown, the housing includes: two circular second housings B1, and the center of the second housing B1 is fixed by a second freezing pipe B11; connected between the outer edges of the two second housings B1 The elastic second expansion part B3, and the movement direction of the second expansion part B3 is straightly diverging from the second refrigeration tube B11 in the center of the second shell B1 to the surroundings. The material of the second expansion part B3 is low temperature resistant and low heat The conductive elastic material, specifically, may be elastic cold-resistant and heat-insulating rubber. The cavity enclosed by the second expansion portion B3, the second housing B1 and the second freezing tube B11 is filled with a second expansion liquid B2, and the second expansion liquid B2 communicates with the outside through the second liquid inlet B4 . The diffusion process of t...

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PUM

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Abstract

The invention discloses a frost heaving force based pressurizing device which comprises a shell and sequential freezing devices; the interior of the shell is of a cavity structure and is symmetricallyprovided with through holes, through which expansion liquid overflows; each through hole is provided with an expansion portion which moves linearly relative to the center of the shell; one end of each expansion portion is in contact with the expansion liquid at the corresponding through hole; a cavity in the shell is connected with external expansion liquid filling equipment through an expansionliquid inlet; the two sides of the shell are symmetrically provided with freezing pipes communicating with the cavity of the shell; the freezing pipe, far away from the expansion portions, is symmetrically provided with the sequential freezing devices; freezing directions of the sequential freezing devices start from the freezing pipe, far away from the corresponding expansion portions, and end tothe setting portions of the corresponding expansion portions; and each sequential freezing device comprises a medium inlet, a medium freezing portion and a medium outlet. The frost heaving force based pressurizing device has the beneficial effects that volume expansion after freezing becomes purposeful through a sequential freezing mode, and a new idea and a new scheme are provided for rock crushing or rock hole sealing by using the expanded volume.

Description

Technical field [0001] The invention relates to the field of mining, in particular to a pressurizing device based on frost heaving force. Background technique [0002] For substances with frost heave properties such as water, when the temperature decreases, the phase state changes from liquid to solid. During this process, the volume increase phenomenon is called frost heave. After the same number of moles of water molecules are converted from liquid to solid, the volume growth rate is about 11%. In the process of frost heave, the density of water decreases, and the solid part that continues to grow is called frost heave. If the surrounding medium restricts the volume growth of the water during freezing, the frost heave of water will exert a normal force perpendicular to the surface of the frost heave on the surrounding medium, which is called the frost heave force. [0003] The frost heave force is based on the intermolecular force. If the surrounding medium provides sufficient ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C37/00E21B33/03
CPCE21B33/03E21C37/00
Inventor 黄炳香蔡青旺陈树亮赵兴龙
Owner CHINA UNIV OF MINING & TECH