CN203081412U - Device capable of increasing coal seam permeability - Google Patents

Device capable of increasing coal seam permeability Download PDF

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Publication number
CN203081412U
CN203081412U CN 201320051512 CN201320051512U CN203081412U CN 203081412 U CN203081412 U CN 203081412U CN 201320051512 CN201320051512 CN 201320051512 CN 201320051512 U CN201320051512 U CN 201320051512U CN 203081412 U CN203081412 U CN 203081412U
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CN
China
Prior art keywords
coal seam
infiltrative
housing
increases
motor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201320051512
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Chinese (zh)
Inventor
刘晓
侯斌
石志永
贵宏伟
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Henan University of Technology
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Henan University of Technology
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Publication date
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Priority to CN 201320051512 priority Critical patent/CN203081412U/en
Application granted granted Critical
Publication of CN203081412U publication Critical patent/CN203081412U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a device capable of increasing coal seam permeability. The device comprises a shell body, a vibration machine, and an ultrasonic wave generating device, wherein both the vibration machine and the ultrasonic wave generating device are arranged inside the shell body, the shell body is of a double-layer structure formed by an inner layer and an outer layer together, and the outer layer of the shell body is made of memory metal. The device can increase coal seam permeability and improve coal seam pumping and collecting efficiency.

Description

Can increase the infiltrative device in coal seam
Technical field
The utility model relates to a kind of gas permeability of coal seam that increases, and improves the device of drainage from coal seam efficient.
Background technology
Contain a large amount of coal bed gas in the coal seam, be called gas again, it is not only valuable resource, also is the important component part that coal and gas are given prominence to potential in the underground mining of colliery, and its main component is a methane.China is coal resources big countries, and along with the high speed development and the scale of coal industry increases suddenly, gas emission increases, and this coal mining accident outstanding, that blast causes of invar rises rapidly.When coal body was exploited, the gas bearing capacity in the coal seam will reach certain value could be exploited, and only depending on the improvement gas that ventilates insufficient, caused gas to overflow once more in the coal body recovery process easily, caused the accident, and can slow down the mining progress of coal body.Yet coal bed gas is the fuel of a kind of high-quality, cleaning, if reasonably developed, reclaim and utilize, not only can reduce the generation of coal mining accident, ensures the ordinary production in colliery, can also solve the problem of China's energy scarcity.About 38 tcms of the coal bed gas resource amount of China, this numerical value is suitable with the natural gas resource amount.China successfully realizes technology such as mined bed extraction coal bed gas, adjacent layer extraction coal bed gas, goaf extraction coal bed gas, country rock extraction coal bed gas, and in the protrusion-dispelling of territory, large, medium and small moulded coal mining area, the whole nation, obtained widely using, in coal bed gas extraction, control gas explosion with reduce coal and obtained some effects aspect giving prominence to gas.Since China's ocurrence of coal seam geological conditions complexity, the gas bearing capacity height, and the permeability in coal seam is low, so bigger difficulty aspect the coal bed gas extraction, occurs,, specific condition of compatibility arranged respectively though also adopted some to improve the infiltrative method in coal seam at present, accommodation is little, and effect is not remarkable.
The utility model content
The purpose of this utility model provides a kind of increase gas permeability of coal seam, improves the device of drainage from coal seam efficient.
For achieving the above object, the utility model adopts following technical scheme: a kind of infiltrative device in coal seam that increases, comprise housing and all be arranged on housing interior bobbing machine and ultrasonic generator, the double-decker of described housing for being made of jointly internal layer and skin, the outer field material of housing is a memory metal.
Bobbing machine comprises that twin shaft stretches motor and be separately positioned on two cams on the motor two overhanging output shafts.
Described two cams are semicircle block, and the installation site of two cams on two output shafts is consistent relatively.
Establish a baffle plate in the described housing, the housing inner chamber is divided into upper and lower two Room, bobbing machine is positioned at indoor, and ultrasonic generator is positioned at indoor down.
The overhanging output shaft of described motor is for extending up and down.
Described ultrasonic generator comprises fixing body and supersonic generator, and fixing body is the hemisphere shape and its hemisphere face protrudes for downward, is evenly equipped with supersonic generator on the fixing body hemisphere face.
The ultrasonic frequency of described supersonic generator is between the 20KH-50KH.
The power switch of the power switch of described motor, the speed regulator that is connected with motor, ultrasonic generator and the frequency regulator of ultrasonic generator constitute regulating system jointly, and regulating system is positioned at hull outside.
The infiltrative device in coal seam that increases described in the utility model, simple in structure, easy to operate, based on mechanical oscillation principle and ultrasonic resonance principle, adopt the exploitation method under vibration and the resonance condition, make the coal seam produce the free desorb face of more gas, increase the permeability coefficient in coal seam; Simultaneously, under the resonance effect, quicken methane gas, make under equal conditions by adsorbing to free conversion, can the more gas of extraction.Implement vibration service thus in the coal seam, the cranny development that increases the coal seam improves the coal seam permeability, thereby thereby reduces uptake raising coal-bed gas rate of discharge and the discharge value of coal seam to gas.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that A among Fig. 1 is to view;
Fig. 3 is that B among Fig. 1 is to view.
The specific embodiment
By Fig. 1-a kind of infiltrative device in coal seam that increases shown in Figure 3, comprise housing 1 and all be arranged on bobbing machine and ultrasonic generator in the housing 1, housing 1 is by internal layer 11 and outer 7 double-deckers that constitute jointly, housing 1 is a double-layer sleeve structure, the material of housing 1 skin 7 is a memory metal, and housing 1 internal layer 11 materials are made by the bigger alloy material of hardness.After expanding, the memory metal energising can closely contact with drill hole wall.
Establish a baffle plate 10 in the described housing 1, baffle plate 10 is fixed on housing 1 internal layer 11 inwalls, and baffle plate 10 is divided into upper and lower two Room with housing 1 inner chamber, and described bobbing machine is positioned at indoor, and ultrasonic generator is positioned at indoor down.Bobbing machine is installed in housing 1 internal layer 11 by link.
Bobbing machine comprises that twin shaft stretches motor 3 and be separately positioned on two cams 2 on 3 liang of overhanging output shafts 5 of motor.Described motor 3 overhanging output shafts 5 are for extending up and down, 5 one of two output shafts that are motor 3 protrude upward, another stretches out downwards, described two cams 2 are semicircle block, the circular block of two halves is installed in the end of two output shafts 5 respectively, and the installation site of two cams 2 on two output shafts 5 is consistent relatively, so that when output shaft 5 rotates, can obtain peak swing.Certainly, the utility model is not limited to above-mentioned form, and in like manner, twin shaft is stretched the also available twin shaft of motor 3 and stretched motor and substitute, and certainly, also available other bobbing machines substitute also can.
Described ultrasonic generator comprises fixing body 4 and supersonic generator 6, and fixing body 4 is the hemisphere shape and its hemisphere face protrudes for downward, is evenly equipped with some supersonic generators 6 on fixing body 4 hemisphere faces.The ultrasonic frequency of described supersonic generator 6 is between the 20KH-50KH.Fixing body 4 bolts are connected in housing 1 internal layer 11.
The power switch of the power switch of described motor 3, the speed regulator that is connected with motor 3, ultrasonic generator and the frequency regulator of ultrasonic generator constitute regulating system 9 jointly, regulating system 9 is positioned at housing 1 outside, regulating system 9 is connected with power supply 8, and this power supply 8 also is positioned at housing 1 outside.Regulating system 9 can be regulated motor 3 rotating speeds, and can carry out Digital Control to the frequency of ultrasonic transmitter.
The infiltrative device in a kind of increase of the present utility model coal seam, concrete implementation step is as follows:
(1) the at first physical characteristic of detail knowledge target coal seam and tectonic characteristics in case of necessity, cooperate test measures such as geodetic stress;
(2) on target coal seam, select hardness is high relatively or density is big relatively zone as along layer or wear the job location in layer vibration hole, keep suitable distance between the boring;
(3) adopt known tool technique to be holed in the position, hole in the vibration hole arranged one by one, the external diameter in vibration hole should be slightly larger than the external diameter of housing 1 skin 7, and described vibration hole depth is gone into target coal seam, and not bring out gas outstanding after with vibration be prerequisite;
(4) after the vibration hole is accomplished fluently, will descend the chamber to insert at the bottom of the vibration hole, switch on, make its expansion, closely contact, and be oppression state with the vibration hole, thereby reach fixed effect with the vibration hole by power supply 8 and 9 pairs of skin 7 memory metals of regulating system;
(5) confirm housing 1 fixing errorless after; implement the mechanical oscillation operation earlier; connect power supply 8; open motor 3 switches in the regulating system 9; rotating drive output shaft 5 by motor 3 rotates; rotating speed according to the property adjustments motor 3 in coal seam; make the coal body medium be subjected to tensile stress and the action of compressive stress that alternately changes; thereby make coal body produce respective quadrature for the elongation and the elasticity of compression deformation that change; produce the vibration wave of density interphase; thereby reach better mechanical oscillation effect; open the ultrasonic emitting switch in the regulating system 9 then; regulate the tranmitting frequency of ultrasonic transmitter, ultrasonic wave in the emission certain frequency scope and the molecule in the coal seam or methane gas produce resonance effect.Help coal bed gas from micropore desorb, diffusion and mobile, the tranmitting frequency of described ultrasonic transmitter is the best according to the tectonic characteristics of target coal seam and the basic physical property of coal to reach the high anti-reflection property of gas;
(6) in this vibration effect zone, implement the improvement or the extraction of gas according to conventional method.
Should the sensitiveness of vibration be decided according to target coal seam apart from arranging between the position, hole that vibrates the hole should be described.
A kind of mechanical oscillation that the utility model adopted and ultrasonic resonance method, mechanical oscillation effect by vibration hole internal vibration equipment, thereby make coal body produce respective quadrature for the elongation and the elasticity of compression deformation that change, produce the extensional vibration of density interphase, and the molecule resonance effect in increase coal seam hole and ultrasonic wave and the coal seam, the molecular kinetic energy of the gas of increase gas, help coal bed gas from micropore desorb, diffusion and mobile, thereby improved the permeability of coal bed gas.
The foregoing description is a better embodiment of the present utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from the change done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.

Claims (8)

1. one kind can increase the infiltrative device in coal seam, it is characterized in that: comprise housing and all be arranged on housing interior bobbing machine and ultrasonic generator, and the double-decker of described housing for constituting jointly by internal layer and skin, the outer field material of housing is a memory metal.
2. the infiltrative device in coal seam that increases as claimed in claim 1 is characterized in that: bobbing machine comprises that twin shaft stretches motor and be separately positioned on two cams on the motor two overhanging output shafts.
3. the infiltrative device in coal seam that increases as claimed in claim 2, it is characterized in that: described two cams are semicircle block, the installation site of two cams on two output shafts is consistent relatively.
4. the infiltrative device in coal seam that increases as claimed in claim 3 is characterized in that: establish a baffle plate in the described housing, the housing inner chamber is divided into upper and lower two Room, bobbing machine is positioned at indoor, and ultrasonic generator is positioned at indoor down.
5. the infiltrative device in coal seam that increases as claimed in claim 4 is characterized in that: the overhanging output shaft of described motor is for extending up and down.
6. the infiltrative device in coal seam that increases as claimed in claim 5, it is characterized in that: described ultrasonic generator comprises fixing body and supersonic generator, fixing body is the hemisphere shape and its hemisphere face protrudes for downward, is evenly equipped with supersonic generator on the fixing body hemisphere face.
7. the infiltrative device in coal seam that increases as claimed in claim 6, it is characterized in that: the ultrasonic frequency of described supersonic generator is between the 20KH-50KH.
8. as each described infiltrative device in coal seam that increases of claim 2-7, it is characterized in that: the power switch of the power switch of described motor, the speed regulator that is connected with motor, ultrasonic generator and the frequency regulator of ultrasonic generator constitute regulating system jointly, and regulating system is positioned at hull outside.
CN 201320051512 2013-01-30 2013-01-30 Device capable of increasing coal seam permeability Expired - Fee Related CN203081412U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320051512 CN203081412U (en) 2013-01-30 2013-01-30 Device capable of increasing coal seam permeability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320051512 CN203081412U (en) 2013-01-30 2013-01-30 Device capable of increasing coal seam permeability

Publications (1)

Publication Number Publication Date
CN203081412U true CN203081412U (en) 2013-07-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971660A (en) * 2016-05-05 2016-09-28 中国矿业大学 Ultrasonic cavitation and hydrofracture combined stimulation coalbed methane extraction method
CN106499366A (en) * 2016-11-01 2017-03-15 中国矿业大学 A kind of coal bed gas enhanced recovery method that microwave is mutually cooperateed with ultrasound wave

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971660A (en) * 2016-05-05 2016-09-28 中国矿业大学 Ultrasonic cavitation and hydrofracture combined stimulation coalbed methane extraction method
CN105971660B (en) * 2016-05-05 2017-11-14 中国矿业大学 Ultrasonic cavitation and hydraulic fracturing joint incentive coal bed gas pumping method
CN106499366A (en) * 2016-11-01 2017-03-15 中国矿业大学 A kind of coal bed gas enhanced recovery method that microwave is mutually cooperateed with ultrasound wave
CN106499366B (en) * 2016-11-01 2019-04-26 中国矿业大学 A kind of coal bed gas enhanced recovery method that microwave is mutually cooperateed with ultrasonic wave

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130724

Termination date: 20200130

CF01 Termination of patent right due to non-payment of annual fee