Carbon dioxide phase change coal seam fracturing device and utilization method

A carbon dioxide and cracker technology, applied in outburst prevention technology and device, anti-reflection, coal body cracking field, can solve problems such as many failures, low efficiency, cable disconnection, etc., to achieve high reliability and facilitate powder discharge , the effect of high work efficiency

Inactive Publication Date: 2016-03-16
CCTEG SHENYANG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the common carbon dioxide extractors in China are all modified by using the carbon dioxide extractors of the British company Cardox. The single carbon dioxide extractors are connected in series through the connectors, and the cables are connected outside. Due to the connection line, only manual or tools can be used. P

Method used

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  • Carbon dioxide phase change coal seam fracturing device and utilization method
  • Carbon dioxide phase change coal seam fracturing device and utilization method
  • Carbon dioxide phase change coal seam fracturing device and utilization method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example one

[0023] See figure 1 , figure 2 , A carbon dioxide phase change coal seam fracturing device, comprising a cylinder 15 threadedly connected to a valve body 5, characterized in that the two ends of the cylinder 15 are threadedly connected with a connector 2 with a vent 3, and the connector 2 has a cable routing In the hole 4, a cable groove 18 for placing the cable 1 is opened on one side of the cylinder 15 and the two connecting heads 2.

[0024] Among them: a cut piece 17 is placed at one end of the cylinder 15 in contact with a connector 2, the valve body 5 is provided with a terminal 6, a filling port 7, and a filling switch 71, and the valve body 5 is also placed on the cylinder 15. In the heating device 14, a copper gasket 16 is also placed at the contact part of one end of the cylinder 15 and a connector 2.

Example Embodiment

[0025] Example two

[0026] See figure 1 , figure 2 , A carbon dioxide phase change coal seam fracturing device, comprising a cylinder 15 threadedly connected to a valve body 5, characterized in that the two ends of the cylinder 15 are threadedly connected with a connector 2 with a vent 3, and the connector 2 has a cable routing In the hole 4, a cable groove 18 for placing the cable 1 is opened on one side of the cylinder 15 and the two connectors 2.

[0027] Among them: a cut piece 17 is placed at one end of the cylinder 15 in contact with a connector 2, the valve body 5 is provided with a terminal 6, a filling port 7, and a filling switch 71, and the valve body 5 is also placed on the cylinder 15. In the heating device 14, a copper gasket 16 is also placed at the contact part of one end of the cylinder 15 and a connector 2.

[0028] Among them: the cable duct 18 where the cable 1 is placed is sealed with resin material, and the cable connecting plugs 12 are placed in the ducts ...

Example Embodiment

[0030] Example three

[0031] See image 3 , Figure 4 , Figure 5 , A carbon dioxide phase change coal seam cracker, comprising a cylinder 15 threaded at one end of the valve body 5, the other end of the cylinder 15 is threaded to connect the connector 2, the valve body 5 has a filling port 7, a filling switch 71, placed in The heating device in the cylinder 15 is characterized in that: the valve body 5 is also provided with a connecting pin hole 117, the electrode upper end 103 of one cable 1, the cylinder 15 is used as the electrode terminal 101 of the other cable, and the connector 2 has There are connecting pin holes 117, the electrode lower end 23 of the cable 1 and the cable connecting terminal 27 and the venting hole 3, and the contact part of the barrel 15 threadedly connected to the connector 2 is provided with a metal cut piece 17 for connecting the cable 1.

[0032] Among them: the metal shear sheet 17 uses a sealed insulating sleeve 118 as a sealing gasket. The metal ...

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Abstract

The invention relates to a carbon dioxide phase change coal seam fracturing device and a utilization method. A barrel is in threaded connection with a valve. The carbon dioxide phase change coal seam fracturing device is characterized in that the two ends of the barrel are in threaded connection with connectors with explosion venting holes, the connectors are provided with cable passing holes, and cable grooves for containing a cable are formed in one sides of the barrel and the two connectors. Due to the fact that the cable is placed in the cable grooves, or one pole of the cable is placed in the barrel, and the barrel is placed on the other pole of the cable, or the whole cable is placed in the barrel, and meanwhile the utilization method is provided, when conveyed into a coal seam drilled hole, the carbon dioxide phase change coal seam fracturing device can be rotated or directly pushed into the drilled hole through a drilling machine, and the situation that the cable is broken during external connecting is avoided; no other special equipment is needed, the depth of the part conveyed in the drilled hole is not limited, and high work efficiency and reliability are achieved; and a screw structure is adopted and directly screwed in a coal body, drilling links are reduced, the screw structure is beneficial to powder discharge and meanwhile is closely embedded with the coal body, gas acting force is improved, the fly stop problem is thoroughly solved, and high reliability is achieved.

Description

technical field [0001] The invention relates to coal cracking, anti-permeability and outburst prevention technologies and devices, in particular to a carbon dioxide phase change coal seam cracker and a utilization method. Background technique [0002] At present, the domestic method of using carbon dioxide extractors to enhance the permeability of coal seams has been partially applied. This method improves the efficiency of coal seam gas drainage and is an innovative technology to solve the current problem of coal mine gas drainage. The previous underground industrial experiment data show that the use of carbon dioxide After the extractor performs fracturing and anti-permeability enhancement, the coal seam gas drainage flow rate increases by about 5 times at most, and the gas concentration of the extracted gas increases by about 15 times, which can effectively shorten the extraction time, make the coal gas release quickly, and reduce the occurrence of gas accidents Therefore...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/117
Inventor 王海东张兴华范洪利雷云吴琼杨东梁中秋张柏林
Owner CCTEG SHENYANG RES INST
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