CN208168859U - The device in the electric pulse collaboration anti-reflection coal seam of frozen-thawed - Google Patents
The device in the electric pulse collaboration anti-reflection coal seam of frozen-thawed Download PDFInfo
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- CN208168859U CN208168859U CN201820613379.7U CN201820613379U CN208168859U CN 208168859 U CN208168859 U CN 208168859U CN 201820613379 U CN201820613379 U CN 201820613379U CN 208168859 U CN208168859 U CN 208168859U
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Abstract
The utility model discloses a kind of devices in electric pulse collaboration anti-reflection coal seam of frozen-thawed, including pulsed discharge reactor, cable, high-voltage pulse generator, high pressure water injection pipe, hole sealing device, note nitrogen pipe, water source, high-pressure hydraulic pump, liquid nitrogen pump and liquid nitrogen source；It is provided with water injection valve and pressure gauge on high pressure water injection pipe, infuses and is provided with nitrogen injecting valua on nitrogen pipe, water injection valve, pressure gauge and nitrogen injecting valua are respectively positioned on outside freeze thawing drilling.The utility model is designed reasonably, structure are simple, easily operated, coal seam is being filled the water first, then it carries out electric pulse and impacts coal seam, cracks in coal seam can be made to increase, frozen-thawed efficiency is improved, and carries out cycle operation, the ice be conducive in crack dissolves, the permeability for substantially improving low permeability coal seam helps to improve the effect of gas exhaust.
Description
Technical field
The utility model belongs to the anti-reflection technical field more particularly to a kind of electric pulse collaboration frozen-thawed of low permeability coal seam
The device in anti-reflection coal seam.
Background technique
China's complex geologic conditions belong to hyposmosis gassy seam more, and coal and gas prominent disaster accident is frequent, cause tight
Casualties, the property loss of weight.Meanwhile with the increase of mining depth and exploitation scale, crustal stress, gas bearing capacity and gas
Pressure increases, and condition of coal seam occurrence and mining environment certainly will badly influence Safety of Coal Mine Production.How quickly, efficient, high yield
Mash gas extraction, the key for becoming energy development and utilizing.Nowadays anti-reflection mode both domestic and external also carries out revolution, waterpower pressure
Split anti-reflection, deep hole blasting, intensive drilling or the requirement for not being able to satisfy present low permeability coal seam, or have the defects that it is certain,
Such as the crack that hydraulic fracturing is formed is few, and waste water resource；Deep hole blasting requires height to bore process, and pollution is big；Intensively
Drill anti-reflection complex process.The present anti-reflection succinct convenience of frozen-thawed, and antireflective effect is splendid, but liquid nitrogen needs coal seam reservoirs
How full water, make coal seam reservoirs more effectively store water, become the antireflective difficult point of liquefied ammonia freeze thawing.The utility model uses electric pulse skill
Art carries out preliminary fracturing to coal seam reservoirs first, enables water to enter in deeper coal seam, reinjects liquid nitrogen, carries out liquid nitrogen increasing
Thoroughly.
Utility model content
For the utility model in order to solve shortcoming in the prior art, providing one kind can make cracks in coal seam increase, improve
The device in the good electric pulse collaboration anti-reflection coal seam of frozen-thawed of frozen-thawed effect, recyclable operation, antireflective effect.
In order to solve the above technical problems, the utility model adopts the following technical solution：Electric pulse cooperates with frozen-thawed anti-reflection
The device in coal seam, including pulsed discharge reactor, cable, high-voltage pulse generator, high pressure water injection pipe, hole sealing device, note nitrogen pipe,
Water source, high-pressure hydraulic pump, liquid nitrogen pump and liquid nitrogen source；
High pressure water injection pipe, cable and note nitrogen pipe are extend into freeze thawing drilling, and the aperture of freeze thawing drilling is arranged in hole sealing device
The outside of high pressure water injection pipe, cable and note nitrogen pipe is sealed by place, and pulsed discharge reactor is fixed at by connection frame
The outlet end of high pressure water injection pipe, cable are connect in one end of freeze thawing bore inner with pulsed discharge reactor, and cable is bored in freeze thawing
One end outside hole is connect with high-voltage pulse generator, and the input end of high pressure water injection pipe is connect with water source, and high-pressure hydraulic pump setting exists
On high pressure water injection pipe and neighbouring water source, the input end of note nitrogen pipe are connect with liquid nitrogen source, and liquid nitrogen pump setting is on note nitrogen pipe and neighbouring
Liquid nitrogen source.
Be provided with water injection valve and pressure gauge on high pressure water injection pipe, infuse and be provided with nitrogen injecting valua on nitrogen pipe, water injection valve, pressure gauge and
Nitrogen injecting valua is respectively positioned on outside freeze thawing drilling.
In the outside of hole sealing device between the outlet end of high pressure water injection pipe, cable is arranged simultaneously along the outer wall of high pressure water injection pipe
It is bonded by mackintosh, the junction insulated enclosure of cable and pulsed discharge reactor.
By adopting the above technical scheme, the freeze thawing of the device in the electric pulse collaboration anti-reflection coal seam of frozen-thawed of the utility model increases
The method in saturating coal seam, includes the following steps：
（1）, selection job location coal seam, drill out freeze thawing drilling to coal seam construction；
（2）, by pulsed discharge reactor by connection frame be mounted in high pressure water injection pipe one end, cable one end is put with pulse
Electric reactor connection, then the length direction by cable along high pressure water injection pipe is fixed on high pressure water injection pipe using mackintosh,
One end of one end and note nitrogen pipe by high pressure water injection pipe equipped with pulsed discharge reactor is sent into together in freeze thawing drilling, and cable is another
The connection of the high-voltage pulse generator of one end and outside, high pressure water injection pipe, high-pressure hydraulic pump is connected with water source, and in high pressure water injection pipe
Note nitrogen pipe, liquid nitrogen pump are connected with liquid nitrogen source, nitrogen injecting valua are installed on liquid nitrogen container, is finally adopted by upper installation water injection valve and pressure gauge
Sealing of hole is carried out at the aperture that freeze thawing drills with hole sealing device；
（3）, open water injection valve, start high-pressure hydraulic pump, high-pressure hydraulic pump by water from high pressure water injection pipe to freeze thawing drilling in fill the water,
When pressure gauge shows that pressure reaches 5-10Mpa and stops water filling, closing high-pressure hydraulic pump and water injection valve；
（4）, open high-voltage pulse generator power supply, charge to pulsed discharge reactor, voltage reaches 30-
When 350KV, pulsed discharge reactor starts to discharge, and generates electrohydraulic effect between water power in freeze thawing drills, and issues shock wave, punching
It hits wave to destroy coal seam, forms fracture network, close high-voltage pulse generator after discharging 40-60 times；
（5）, open nitrogen injecting valua, start liquid nitrogen pump, liquid nitrogen pump by liquid nitrogen from note nitrogen pipe to freeze thawing drilling in inject liquid nitrogen, make
The coal seam formation temperature gradient of fracture network is generated, low temperature liquid nitrogen and contact with moisture, the nitrogen volume of liquid nitrogen rapid vaporization, vaporization are swollen
Swollen impact coal wall；Amount of liquid nitrogen in freeze thawing drilling reaches the water whole glaciation that can make in coal seam, closes nitrogen injecting valua, stops
Fluid injection nitrogen, anti-reflection coal seam；
（6）, repeat step（3）~（5）, until reaching scheduled antireflective effect and anti-reflection range；
（7）, high-pressure hydraulic pump and liquid nitrogen pump removed, open water injection valve, freeze thawing drilling mesohigh water released, is then shut off
Water injection valve；
（8）, pulsed discharge reactor and high pressure water injection pipe are removed to freeze thawing drilling, then gas drainage pipe is installed, and it is external
Gas drainage pipe network connection, carry out gas drainage.
The utility model has the advantages that：
（1）Before injecting liquid nitrogen, first progress electric pulse is anti-reflection, carries out fracturing for the first time to coal seam, and then increase coal seam
Full water rate, and then improve frozen-thawed range and coal body antireflective effect.Therefore infiltration of the utility model to low permeability coal seam
Performance is greatly improved.
（2）Due to the desorption of low temperature effect gas, and simple liquid nitrogen is anti-reflection, and the heating-up time is slow, and circulation time is long.Electric arteries and veins
Punching can improve the temperature of water in coal seam in a short time, be greatly improved to anti-reflection and gas the desorption of coal body.
In conclusion the utility model needs coal seam to have more crack mainly for frozen-thawed is anti-reflection, be conducive to water
Point well into, and after frozen-thawed temperature influence desorption of mash gas the problem of.The utility model is designed reasonably, structure are simple, easy
In operation, coal seam is being filled the water first, electric pulse is then being carried out and impacts coal seam, cracks in coal seam can be made to increase, improve liquid
Nitrogen freeze thawing efficiency, and cycle operation is carried out, the ice be conducive in crack dissolves, and substantially improves the permeability of low permeability coal seam, has
Help improve the effect of gas exhaust.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, the device in the electric pulse collaboration anti-reflection coal seam of frozen-thawed of the utility model, including pulsed discharge are anti-
Answer device 1, cable 2, high-voltage pulse generator 3, high pressure water injection pipe 4, hole sealing device 5, note nitrogen pipe 6, water source 7, high-pressure hydraulic pump 8, liquid
Nitrogen pump 9 and liquid nitrogen source 10；
High pressure water injection pipe 4, cable 2 and note nitrogen pipe 6 are extend into freeze thawing drilling 11, and the setting of hole sealing device 5 drills in freeze thawing
The outside of high pressure water injection pipe 4, cable 2 and note nitrogen pipe 6 is sealed at 11 aperture, pulsed discharge reactor 1 passes through connection
Frame is fixed at the outlet end of high pressure water injection pipe 4, the one end and pulsed discharge reactor 1 of cable 2 inside freeze thawing drilling 11
Connection, the one end of cable 2 outside freeze thawing drilling 11 are connect with high-voltage pulse generator 3, the input end and water of high pressure water injection pipe 4
Source 7 connects, and high-pressure hydraulic pump 8 is arranged on high pressure water injection pipe 4 and neighbouring water source 7, and the input end and liquid nitrogen source 10 for infusing nitrogen pipe 6 connect
It connects, the setting of liquid nitrogen pump 9 is on note nitrogen pipe 6 and adjacent to liquid nitrogen source 10.
It is provided with water injection valve 12 and pressure gauge 13 on high pressure water injection pipe 4, infuses and is provided with nitrogen injecting valua 14, water injection valve on nitrogen pipe 6
12, pressure gauge 13 and nitrogen injecting valua 14 are respectively positioned on outside freeze thawing drilling 11.
In the outside of hole sealing device 5 between the outlet end of high pressure water injection pipe 4, cable 2 is set along the outer wall of high pressure water injection pipe 4
It sets and is bonded by mackintosh, the junction insulated enclosure of cable 2 and pulsed discharge reactor 1.
Pulsed discharge reactor 1, high-voltage pulse generator 3, hole sealing device 5, high-pressure hydraulic pump 8, liquid in the utility model
Nitrogen pump 9 and liquid nitrogen source 10 are existing mature technology, and specific configuration repeats no more.
The method that the anti-reflection coal seam of freeze thawing of the device in the anti-reflection coal seam of frozen-thawed is cooperateed with using the electric pulse of the utility model,
Include the following steps：
（1）, selection job location coal seam 15, drill out freeze thawing drilling 11 to the construction of coal seam 15；
（2）, by pulsed discharge reactor 1 by connection frame be mounted in high pressure water injection pipe 4 one end, by 2 one end of cable and arteries and veins
Impulse electricity reactor 1 connects, and then the length direction by cable 2 along high pressure water injection pipe 4 is fixed to high pressure injection using mackintosh
On water pipe 4, freeze thawing drilling is sent into one end of one end and note nitrogen pipe 6 by high pressure water injection pipe 4 equipped with pulsed discharge reactor 1 together
In 11, the high-voltage pulse generator 3 of 2 other end of cable and outside is connected, by high pressure water injection pipe 4, high-pressure hydraulic pump 8 and water source 7
Connection, and water injection valve 12 and pressure gauge 13 are installed on high pressure water injection pipe 4, note nitrogen pipe, liquid nitrogen pump 9 are connected with liquid nitrogen source 10,
Nitrogen injecting valua 14 is installed on liquid nitrogen container, sealing of hole is finally carried out at the aperture of freeze thawing drilling 11 using hole sealing device 5；
（3）, open water injection valve 12, start high-pressure hydraulic pump 8, high-pressure hydraulic pump 8 by water from high pressure water injection pipe 4 to freeze thawing drilling 11
Interior water filling, when pressure gauge 13 shows that pressure reaches 5-10Mpa and stops water filling, closing high-pressure hydraulic pump 8 and water injection valve 12；
（4）, open high-voltage pulse generator 3 power supply, charge to pulsed discharge reactor 1, voltage reaches 30-
When 350KV, pulsed discharge reactor 1 starts to discharge, and is generating electrohydraulic effect between water power in freeze thawing drilling 11, is issuing impact
Wave, shock wave destroy coal seam 15, form fracture network, close high-voltage pulse generator 3 after discharging 40-60 times；
（5）, open nitrogen injecting valua 14, start liquid nitrogen pump 9, liquid nitrogen pump 9 by liquid nitrogen from note nitrogen pipe to freeze thawing drilling 11 in inject
Liquid nitrogen, makes the 15 formation temperature gradient of coal seam for generating fracture network, low temperature liquid nitrogen and contact with moisture, liquid nitrogen rapid vaporization, vaporization
Coal wall is impacted in nitrogen volume expansion；Amount of liquid nitrogen in freeze thawing drilling 11 reaches the water whole glaciation that can make in coal seam 15,
Nitrogen injecting valua 14 is closed, fluid injection nitrogen, anti-reflection coal seam 15 are stopped；
（6）, repeat step（3）~（5）, until reaching scheduled antireflective effect and anti-reflection range；
（7）, high-pressure hydraulic pump 8 and liquid nitrogen pump 9 removed, open water injection valve 12, the freeze thawing 11 mesohigh water that drill released, so
Water injection valve 12 is closed afterwards；
（8）, pulsed discharge reactor 1 and high pressure water injection pipe 4 are removed to freeze thawing drilling 11, then gas drainage pipe is installed, with
External gas drainage pipe network connection, carries out gas drainage.
The present embodiment not makes any form of restriction the shape of the utility model, material, structure etc., all foundations
The technical essence of the utility model any simple modification, equivalent change and modification to the above embodiments, belong to this reality
With the protection scope of new technique scheme.
Claims (3)
1. the device in the electric pulse collaboration anti-reflection coal seam of frozen-thawed, it is characterised in that：Including pulsed discharge reactor, cable, height
Press impulse generator, high pressure water injection pipe, hole sealing device, note nitrogen pipe, water source, high-pressure hydraulic pump, liquid nitrogen pump and liquid nitrogen source；
High pressure water injection pipe, cable and note nitrogen pipe are extend into freeze thawing drilling, and hole sealing device is arranged at the aperture of freeze thawing drilling will
The outside of high pressure water injection pipe, cable and note nitrogen pipe is sealed, and pulsed discharge reactor is fixed at high pressure by connection frame
The outlet end of water injection pipe, cable are connect in one end of freeze thawing bore inner with pulsed discharge reactor, and cable is outer in freeze thawing drilling
The one end in portion is connect with high-voltage pulse generator, and the input end of high pressure water injection pipe is connect with water source, and high-pressure hydraulic pump is arranged in high pressure
On water injection pipe and neighbouring water source, the input end of note nitrogen pipe are connect with liquid nitrogen source, and liquid nitrogen pump is arranged on note nitrogen pipe and neighbouring liquid nitrogen
Source.
2. the device in the electric pulse collaboration according to claim 1 anti-reflection coal seam of frozen-thawed, it is characterised in that：High pressure water injection
It is provided with water injection valve and pressure gauge on pipe, infuses and is provided with nitrogen injecting valua on nitrogen pipe, water injection valve, pressure gauge and nitrogen injecting valua, which are respectively positioned on, to be frozen
It is external to melt drilling.
3. the device in the electric pulse collaboration according to claim 1 anti-reflection coal seam of frozen-thawed, it is characterised in that：It is filled in sealing of hole
To between the outlet end of high pressure water injection pipe, cable is arranged along the outer wall of high pressure water injection pipe and is glued by mackintosh for the outside set
It connects, the junction insulated enclosure of cable and pulsed discharge reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820613379.7U CN208168859U (en) | 2018-04-27 | 2018-04-27 | The device in the electric pulse collaboration anti-reflection coal seam of frozen-thawed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820613379.7U CN208168859U (en) | 2018-04-27 | 2018-04-27 | The device in the electric pulse collaboration anti-reflection coal seam of frozen-thawed |
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| CN208168859U true CN208168859U (en) | 2018-11-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397182A (en) * | 2018-04-27 | 2018-08-14 | 河南理工大学 | Electric pulse cooperates with the device and method in the anti-reflection coal seam of frozen-thawed |
| CN109577939A (en) * | 2018-12-25 | 2019-04-05 | 徐州工程学院 | A kind of method that big temperature difference Frozen-thawed cycled strengthens shale gas exploitation |
-
2018
- 2018-04-27 CN CN201820613379.7U patent/CN208168859U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397182A (en) * | 2018-04-27 | 2018-08-14 | 河南理工大学 | Electric pulse cooperates with the device and method in the anti-reflection coal seam of frozen-thawed |
| CN108397182B (en) * | 2018-04-27 | 2024-03-01 | 河南理工大学 | Device and method for enhancing permeability of coal seam through electric pulse and liquid nitrogen freeze thawing |
| CN109577939A (en) * | 2018-12-25 | 2019-04-05 | 徐州工程学院 | A kind of method that big temperature difference Frozen-thawed cycled strengthens shale gas exploitation |
| CN109577939B (en) * | 2018-12-25 | 2020-09-01 | 徐州工程学院 | Method for strengthening shale gas exploitation through large-temperature-difference freeze-thaw cycle |
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