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A punching device and method based on nanofluid-based liquid-electric breakdown and infrared thermal radiation

A technology of nanofluid and punching device, which is applied in the direction of mining fluid, safety device, earthwork drilling and mining, etc. It can solve the problems of poor punching effect, enhanced penetration of punching liquid, easy clogging, etc., and achieves fast heating speed and strengthened Punching effect, high error tolerance effect

Active Publication Date: 2021-08-31
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Coal will continue to be the main energy source in my country in the next few decades, and as the depth and intensity of mine mining continue to increase, the threat of gas to safe production will become more and more serious. Gas drainage is the fundamental measure for gas disaster control. To improve the efficiency of gas control, the domestic industry has adopted a series of pressure relief and anti-reflection measures, among which the widely used and more applicable one is the hydraulic punching technology; however, in the actual application of this technology, most of them use pure Water or abrasive fluid is used as the punching liquid, which has problems such as poor punching effect or easy clogging, and the punching liquid cannot be further used to enhance permeability after injection

Method used

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  • A punching device and method based on nanofluid-based liquid-electric breakdown and infrared thermal radiation
  • A punching device and method based on nanofluid-based liquid-electric breakdown and infrared thermal radiation
  • A punching device and method based on nanofluid-based liquid-electric breakdown and infrared thermal radiation

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Experimental program
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Effect test

Embodiment approach

[0042] Next, the present application also provides an implementation method of the above-mentioned punching device based on nanofluid-based liquid-electric breakdown and infrared heat radiation, which specifically includes the following steps:

[0043] The first step is to install the combined drill pipe 17, connect various pipelines, and push the drill pipe 17 into the borehole 24 until the bottom of the borehole 24 after the punching device is installed;

[0044] In the second step, a movable hole sealer 15 is installed at the position of the drill pipe 17 and the hole 24, and the hole 24 is sealed, and the liquid injection pump station 19 is started. Pipe 7 injects AZO nanofluid into injection chamber 8;

[0045] The third step is to start the high-voltage electric pulse generator 20 to charge the positive electrode plate group and the negative electrode plate group (here, the preset charging value is 250V), after the positive electrode plate group and the negative electrod...

Embodiment 2

[0050] The present application also provides a second implementation mode, which specifically includes the following steps:

[0051] The first step is to install the combined drill pipe 17, connect various pipelines, and push the drill pipe 17 into the borehole 24 until the bottom of the borehole 24 after the punching device is installed;

[0052] In the second step, a movable hole sealer 15 is installed at the position of the drill pipe 17 and the hole 24, and the hole 24 is sealed, and the liquid injection pump station 19 is started. The tube 7 injects ZnO nanofluid into the liquid injection cavity 8;

[0053] The third step is to start the high-voltage electric pulse generator 20 to charge the positive electrode plate group and the negative electrode plate group (here the preset charging value is 500KV), after the positive electrode plate group and the negative electrode plate group are charged to the preset voltage of 500KV Turn off the high-voltage power switch 21, the p...

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Abstract

The invention relates to a punching device and method based on nanofluid-based electrohydraulic breakdown and infrared thermal radiation. First install the punching device at the planned punching position, and seal the hole with a hole sealer, then inject nanofluid into the injection chamber with a liquid injection pump station, and then a high-voltage electric pulse generator supplies power to the positive and negative electrode plates to trigger The hydraulic effect is used for punching, and finally the infrared heater is turned on to cause thermal stress to crack the coal body; the present invention uses nanofluid, an energy transport medium with high heat transfer performance, to combine high-pressure hydraulic punching technology with infrared heat radiation heating technology Combined, it can not only take advantage of the convenience and precision control of hydraulic and electric breakdown, but also use infrared radiation heating to rapidly raise the temperature to crack the coal body, effectively achieve the purpose of coal seam permeability enhancement and fracture development, and the method is simple, reliable, and easy to maintain , has broad engineering application prospects.

Description

technical field [0001] The invention relates to a punching device and method based on nanofluid-based electrohydraulic breakdown and infrared heat radiation, and belongs to the technical field of mine hydraulic punching. Background technique [0002] Coal will continue to be the main energy source in my country in the next few decades, and as the depth and intensity of mine mining continue to increase, the threat of gas to safe production will become more and more serious. Gas drainage is the fundamental measure for gas disaster control. To improve the efficiency of gas control, the domestic industry has adopted a series of pressure relief and anti-reflection measures, among which the widely used and more applicable one is the hydraulic punching technology; however, in the actual application of this technology, most of them use pure When water or abrasive fluid is used as the punching liquid, there are problems such as poor punching effect or easy clogging, and the punching li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/15E21B43/26E21F7/00
CPCE21B7/15E21B43/26E21F7/00
Inventor 林柏泉倪祯张祥良钟璐斌
Owner CHINA UNIV OF MINING & TECH
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