CN209043750U - A kind of coal and rock fracturing, anatonosis, desorption coupling experiment device - Google Patents
A kind of coal and rock fracturing, anatonosis, desorption coupling experiment device Download PDFInfo
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- CN209043750U CN209043750U CN201820807427.6U CN201820807427U CN209043750U CN 209043750 U CN209043750 U CN 209043750U CN 201820807427 U CN201820807427 U CN 201820807427U CN 209043750 U CN209043750 U CN 209043750U
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Abstract
The utility model discloses a kind of coal and rock fracturing, anatonosis, desorption coupling experiment devices, loading system is pressed including liquid nitrogen container, confining pressure loading system and axis, confining pressure loading system and axis press loading system interconnection, confining pressure loading system and axis pressure loading system surround and are equipped with autoclave on the center in region, liquid nitrogen container is connected with liquid nitrogen pulse pressure-charging pump by pipeline, is equipped with the flowmeter of resistance to ultralow temperature on the pipeline between liquid nitrogen container and liquid nitrogen pulse pressure-charging pump.This coal petrography sample high-pressure liquid nitrogen recycles fracturing and gasification displacement test device, pass through different fluid injection nitrogen modes, change the fine sight structure feature of coal body, coalmass crevasse is promoted to develop, increase the permeability of coal body, and coal gas partial pressure is changed by gasification high pressure nitrogen, promote the competitive Adsorption relationship of nitrogen and methane gas, makes the methane gas in coal body as stream of nitrogen gas is desorbed from coal body.
Description
Technical field
The utility model relates to colliery engineering field, specially a kind of coal and rock fracturing, anatonosis, desorption coupling experiment dress
It sets.
Background technique
Liquid nitrogen have extremely low temperature (- 196 DEG C), no pollution to the environment, be easy preparation and it is low in cost.Coal is a kind of day
The defects of right low-intensity, hugger, microfissure and hole structural development geologic body, low temperature liquid nitrogen multistage pulses inject coal body
Afterwards, the reduction of coal body circulation freezing damage, the extension of primary microfissure can be made and generate new crack, form freeze thawing fracturing band.Liquid nitrogen
Volume sharply expands (1m after gasification3Liquid nitrogen gasification after 21 DEG C of volumes reach 696m3), generate huge expansive force fracturing coal seam, shape
At gasification high pressure fracturing band, while high pressure nitrogen can be driven, divide displacement coal-bed gas, and desorption of mash gas seepage flow is promoted.It grinds in the past
When studying carefully coal seam liquid nitrogen anatonosis technology, focuses mostly on and melt the single effects such as fracturing, high pressure fracturing, displacement desorption gas in research liquid nitrogen leaching
Answer, to above content comprehensively consider still not comprehensively, when especially liquid nitrogen multistage pulses act on deep coal body, above-mentioned complex effect
It is more complicated.
Utility model content
The purpose of this utility model is to provide a kind of coal and rock fracturing, anatonosis, desorption coupling experiment devices, have and improve
The advantages of Gas Disaster prevention and treatment is with gas resources development level, solves the problems of the prior art.
To achieve the above object, the utility model provides the following technical solutions: a kind of coal and rock fracturing, anatonosis, desorption coupling
Experimental provision is closed, including liquid nitrogen container, confining pressure loading system and axis press loading system, the confining pressure loading system and axis pressure load system
System interconnection, confining pressure loading system and axis pressure loading system surround and are equipped with autoclave on the center in region, institute
That states liquid nitrogen container is connected with liquid nitrogen pulse pressure-charging pump by pipeline, installs on the pipeline between liquid nitrogen container and liquid nitrogen pulse pressure-charging pump
There is the flowmeter of resistance to ultralow temperature, liquid nitrogen pulse pressure-charging pump is connected with autoclave, liquid nitrogen pulse pressure-charging pump and high pressure by pipeline
Low temperature resistant valve is installed in the connecting pipe of reaction kettle, temperature control heating device reaction under high pressure is installed in the autoclave
The side of kettle is electrically connected sound change measuring instrument, resistance measuring instrument and pressure inductor, the reaction under high pressure of pressure inductor side
Kettle is connected separately with vacuum pump, gas-liquid separator and safety relief door by pipeline, and the temperature control heating device is leaned on to become into sound and be surveyed
The side of amount instrument is electrically connected with strain gauge, and the first valve, the first valve are equipped on the pipeline of temperature control heating device side
The pipeline of the door other side is connected separately with adsorption-desorption with reference to kettle and gas booster pump, between gas booster pump and the first valve
First gas flowmeter and the second valve be installed on pipeline, the side of gas booster pump be connected separately with oxygen tank, methane tank,
Nitrogen gas tank and helium tank are equipped with third valve, gas-liquid separation on the pipeline that the gas-liquid separator is connect with autoclave
Device is connected with desiccant and second gas flowmeter close to one end of third valve, and the other end of gas-liquid separator is connected separately with
Fluid flowmeter and precision balance.
Preferably, the 4th valve is installed on the pipeline that the vacuum pump is connect with autoclave.
Preferably, pacify respectively on the pipeline that the oxygen tank, methane tank, nitrogen gas tank and helium tank are connect with gas booster pump
Equipped with the 5th valve, the 6th valve, the 7th valve and the 8th valve.
Preferably, the pressure inductor and safety relief door are electrically connected.
Compared with prior art, the beneficial effects of the utility model are as follows:
This coal and rock fracturing, anatonosis, desorption coupling experiment device change the fine sight of coal body by different fluid injection nitrogen modes
Structure feature promotes coalmass crevasse to develop, and increases the permeability of coal body, and change coal gas point by gasification high pressure nitrogen
Pressure promotes the competitive Adsorption relationship of nitrogen and methane gas, makes the methane gas in coal body as stream of nitrogen gas is solved from coal body
It sucks out.
Detailed description of the invention
Fig. 1 is the overall structure figure of the utility model.
In figure: 1 liquid nitrogen container, 2 liquid nitrogen pulse pressure-chargings pump, 3 flowmeters of resistance to ultralow temperature, 4 confining pressure loading systems, the pressure load of 5 axis
System, 6 strain gauges, 7 sound become measuring instrument, 8 resistance measuring instruments, 9 temperature control heating devices, 10 second gas flowmeters, 11 pressures
Power inductor, 12 vacuum pumps, 13 desiccant, 14 gas-liquid separators, 15 fluid flowmeters, 16 precision balances, 17 the 5th valves, 18
Gas booster pump, 19 oxygen tanks, 20 methane tanks, 21 nitrogen gas tanks, 22 helium tanks, 23 low temperature resistant valves, 24 second valves, 25 are inhaled
Attached desorption is anti-with reference to kettle, 26 the 4th valves, 27 third valves, 28 the 6th valves, 29 the 7th valves, 30 the 8th valves, 31 high pressures
Answer kettle, 32 safety relief doors, 33 first valves, 34 first gas flowmeters.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.Referring to Fig. 1, a kind of coal and rock fracturing, increasing
It seeps, desorption coupling experiment device, including liquid nitrogen container 1, confining pressure loading system 4 and axis press loading system 5,4 He of confining pressure loading system
Axis presses 5 interconnection of loading system, and confining pressure loading system 4 and axis pressure loading system 5 are surrounded and be equipped on the center in region
Autoclave 31, liquid nitrogen container 1 are connected with liquid nitrogen pulse pressure-charging pump 2, liquid nitrogen container 1 and liquid nitrogen pulse pressure-charging pump 2 by pipeline
Between pipeline on the flowmeter of resistance to ultralow temperature 3 is installed, liquid nitrogen pulse pressure-charging pump 2 is connected with autoclave 31 by pipeline,
Low temperature resistant valve 23, peace in autoclave 31 are installed on liquid nitrogen pulse pressure-charging pump 2 and the connecting pipe of autoclave 31
Equipped with temperature control heating device 9, its constant temperature is heated and kept to reaction kettle 31, and the side of autoclave 31 is electrically connected with
Sound becomes measuring instrument 7, resistance measuring instrument 8 and pressure inductor 11, the autoclave 31 of 11 side of pressure inductor and passes through pipeline
It is connected separately with vacuum pump 12, gas-liquid separator 14 and safety relief door 32, pressure inductor 11 and safety relief door 32 are electrically
Connection, when the pressure of pressure sensor 11 is more than the safe pressure of setting, safety valve 32 automatically turns on pressure release, vacuum pump 12
4th valve 26 is installed, vacuum pump 12 takes out residual air in system and pipeline on the pipeline connecting with autoclave 31
Out, air is avoided to impact experiment, temperature control heating device 9 leans on the side for becoming measuring instrument 7 into sound to be electrically connected with strain and surveys
Instrument 6 is measured, coal sample can be monitored in entire pressure break and displacement process by strain gauge 6, acoustic measurement instrument 7, resistance measuring instrument 8
In coal sample deformation quantity, crack, resistivity situation of change, the first valve is installed on the pipeline of 9 side of temperature control heating device
33, the pipeline of 33 other side of the first valve is connected separately with adsorption-desorption with reference to kettle 25 and gas booster pump 18, gas booster pump
18 and the first pipeline between valve 33 on first gas flowmeter 34 and the second valve 24, the side of gas booster pump 18 are installed
It is connected separately with oxygen tank 19, methane tank 20, nitrogen gas tank 21 and helium tank 22, oxygen tank 19, methane tank 20, nitrogen gas tank 21 and helium
The 5th valve 17, the 6th valve 28, the 7th valve 29 are separately installed on the pipeline that gas tank 22 is connect with gas booster pump 18
With the 8th valve 30, the input quantity of oxygen, methane, nitrogen and helium, gas-liquid separator 14 and autoclave 31 are controlled respectively
Third valve 27 is installed, gas-liquid separator 14 is connected with desiccant 13 close to one end of third valve 27 on the pipeline of connection
With second gas flowmeter 10, the other end of gas-liquid separator 14 is connected separately with fluid flowmeter 15 and precision balance 16.
The course of work: before experiment starts, low temperature resistant valve 23, the second valve 24, third valve 27 are in off state, and the 4th
Valve 26 is in an open state, and opens temperature control heating system 9, its constant temperature is heated and kept to reaction kettle 31, opens vacuum pump
12 extract residual air in system and pipeline out, and air is avoided to impact experiment, and the 4th valve 26 is closed after vacuumizing, is beaten
Gas booster pump 18 is opened, and opens the second valve 24, the 8th valve 30, close the first valve 33, refers to kettle 25 to adsorption-desorption
It is passed through helium, by pressure sensor thereon, volume calibration is carried out with reference to kettle 25 to adsorption-desorption, opens the first valve 33, to
It is passed through helium in reaction kettle 31, reaction kettle 31 and pipe-line system are demarcated, it is solid to calculate it by first gas flowmeter 34
Determine spatial volume, open the 4th valve 26, by adsorption-desorption with reference to helium atmosphere discharge system in kettle 25, reaction kettle 31 and pipeline
System closes the 4th valve 26, opens the 6th valve 28, and booster pump 18 is passed through 20 gas of methane into system, inhales coal sample sufficiently
Attached methane gas is calculated methane adsorption amount, passed through by the reading of first gas flowmeter 34 in conjunction with fixed space volume
Axis presses loading system 5 to apply axial stress to coal sample in reaction kettle 31, and confining pressure loading system 5 applies coal sample in reaction kettle 31
Confining pressure, stress intensity are set according to requirement of experiment, close the second valve 24, and the 6th valve 28 opens low temperature resistant valve 23, according to
The reading of pressure sensor 11, setting liquid nitrogen pulse pressure-charging pump 2 pressure series, by liquid nitrogen pulse pressure-charging pump 2, to reaction kettle
It is filled with quantitative high-pressure liquid nitrogen in 31, is filled with amount of liquid nitrogen and is controlled by the flowmeter of resistance to ultralow temperature 3, opens third valve 27, closes
Low temperature resistant valve 23 makes nitrogen and methane mixed gas in reaction kettle 31, passes through third valve 27, desiccant 13, second gas
Experimental system is discharged in flowmeter 10, and the liquid carried in gas is entered by gas-liquid separator 14 by fluid flowmeter 15
Precision balance 16 collects the gas for passing through second gas flowmeter 10, carries out gas chromatographic analysis, recycles this operation, until anti-
The complete pressure release of kettle 31 is answered, after pressure break and displacement test, rotation confining pressure loading system 4 and axis press loading system 5, to coal
Sample carries out pressure release, closes temperature control heating system 9, so that temperature in reaction kettle 31 is down to room temperature, takes out coal sample after pressure break, completes real
It tests, in whole experiment process, 32 safe pressure of safety valve is set according to experimental pressure, when the pressure of pressure sensor 11
When power is more than the safe pressure of setting, safety valve 32 automatically turns on pressure release, passes through strain gauge 6, acoustic measurement instrument 7, resistance
Measuring instrument 8 can monitor coal sample deformation quantity of the coal sample in entire pressure break and displacement process, crack, resistivity situation of change.
In summary: this coal and rock fracturing, anatonosis, desorption coupling experiment device change coal by different fluid injection nitrogen modes
The fine sight structure feature of body promotes coalmass crevasse to develop, and increases the permeability of coal body, and change coal body by gasification high pressure nitrogen
Gas partial pressure, promotes the competitive Adsorption relationship of nitrogen and methane gas, makes methane gas in coal body as stream of nitrogen gas is from coal
It is desorbed in body.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of coal and rock fracturing, anatonosis, desorption coupling experiment device, including liquid nitrogen container (1), confining pressure loading system (4) and axis
It presses loading system (5), it is characterised in that: the confining pressure loading system (4) and axis press loading system (5) interconnection, and confining pressure adds
Loading system (4) and axis pressure loading system (5) surround and are equipped with autoclave (31), the liquid nitrogen container on the center in region
(1) liquid nitrogen pulse pressure-charging pump (2) is connected with by pipeline, liquid nitrogen container (1) and liquid nitrogen pulse pressure-charging pump on the pipeline between (2)
It is equipped with the flowmeter of resistance to ultralow temperature (3), liquid nitrogen pulse pressure-charging pumps (2) and is connected with autoclave (31), liquid nitrogen arteries and veins by pipeline
It rushes in the connecting pipe of booster pump (2) and autoclave (31) and low temperature resistant valve (23), the autoclave is installed
(31) it is equipped with temperature control heating device (9) in, the side of autoclave (31) is electrically connected sound change measuring instrument (7), resistance
The autoclave (31) of measuring instrument (8) and pressure inductor (11), pressure inductor (11) side is separately connected by pipeline
There are vacuum pump (12), gas-liquid separator (14) and safety relief door (32), the temperature control heating device (9), which is leaned on into sound, becomes measuring instrument
(7) side is electrically connected with strain gauge (6), is equipped with the first valve on the pipeline of temperature control heating device (9) side
(33), the pipeline of the first valve (33) other side is connected separately with adsorption-desorption with reference to kettle (25) and gas booster pump (18), gas
First gas flowmeter (34) and the second valve (24) are installed on the pipeline between body booster pump (18) and the first valve (33),
The side of gas booster pump (18) is connected separately with oxygen tank (19), methane tank (20), nitrogen gas tank (21) and helium tank (22), institute
It states and is equipped on the pipeline that gas-liquid separator (14) is connect with autoclave (31) third valve (27), gas-liquid separator (14)
One end close to third valve (27) is connected with desiccant (13) and second gas flowmeter (10), gas-liquid separator (14) it is another
One end is connected separately with fluid flowmeter (15) and precision balance (16).
2. a kind of coal and rock fracturing according to claim 1, anatonosis, desorption coupling experiment device, it is characterised in that: described
4th valve (26) is installed on the pipeline that vacuum pump (12) is connect with autoclave (31).
3. a kind of coal and rock fracturing according to claim 1, anatonosis, desorption coupling experiment device, it is characterised in that: described
On the pipeline that oxygen tank (19), methane tank (20), nitrogen gas tank (21) and helium tank (22) are connect with gas booster pump (18) respectively
5th valve (17), the 6th valve (28), the 7th valve (29) and the 8th valve (30) are installed.
4. a kind of coal and rock fracturing according to claim 1, anatonosis, desorption coupling experiment device, it is characterised in that: described
Pressure inductor (11) and safety relief door (32) are electrically connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807427.6U CN209043750U (en) | 2018-05-29 | 2018-05-29 | A kind of coal and rock fracturing, anatonosis, desorption coupling experiment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807427.6U CN209043750U (en) | 2018-05-29 | 2018-05-29 | A kind of coal and rock fracturing, anatonosis, desorption coupling experiment device |
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| CN209043750U true CN209043750U (en) | 2019-06-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030030A (en) * | 2019-03-11 | 2019-07-19 | 中国矿业大学 | A kind of electric pulse fracturing is anti-reflection and adsorption-desorption integrated apparatus and method |
| CN110424937A (en) * | 2019-07-15 | 2019-11-08 | 河南理工大学 | A kind of coal bed gas low yield well nitrogen-carbon dioxide joint transformation method for increasing |
| CN110485981A (en) * | 2019-09-10 | 2019-11-22 | 河南理工大学 | Liquid nitrogen can be pressurized and couple fracturing permeability improvement device and anti-reflection experimental method with nitrogen |
| CN110529107A (en) * | 2019-09-02 | 2019-12-03 | 重庆大学 | Coal seam strain, seepage flow, displacement and jet stream integrated experiment device and method |
| CN110823757A (en) * | 2019-11-28 | 2020-02-21 | 辽宁工程技术大学 | Low-permeability coal bed gas microwave-liquid nitrogen circulating freeze-thaw degradation-promotion permeability-increasing experimental device and method |
| CN113447633A (en) * | 2021-06-25 | 2021-09-28 | 安徽理工大学 | Movable experimental device for high-voltage electric pulse induced cracking loaded coal containing gas |
| CN114166698A (en) * | 2022-02-08 | 2022-03-11 | 中国矿业大学(北京) | Method and system for evaluating gas diffusion capacity of coal micro-channel under competitive adsorption |
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2018
- 2018-05-29 CN CN201820807427.6U patent/CN209043750U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030030A (en) * | 2019-03-11 | 2019-07-19 | 中国矿业大学 | A kind of electric pulse fracturing is anti-reflection and adsorption-desorption integrated apparatus and method |
| CN110424937A (en) * | 2019-07-15 | 2019-11-08 | 河南理工大学 | A kind of coal bed gas low yield well nitrogen-carbon dioxide joint transformation method for increasing |
| CN110529107A (en) * | 2019-09-02 | 2019-12-03 | 重庆大学 | Coal seam strain, seepage flow, displacement and jet stream integrated experiment device and method |
| CN110529107B (en) * | 2019-09-02 | 2021-06-04 | 重庆大学 | Comprehensive testing device and method for coal seam strain, seepage, displacement and jet flow |
| CN110485981A (en) * | 2019-09-10 | 2019-11-22 | 河南理工大学 | Liquid nitrogen can be pressurized and couple fracturing permeability improvement device and anti-reflection experimental method with nitrogen |
| CN110823757A (en) * | 2019-11-28 | 2020-02-21 | 辽宁工程技术大学 | Low-permeability coal bed gas microwave-liquid nitrogen circulating freeze-thaw degradation-promotion permeability-increasing experimental device and method |
| CN113447633A (en) * | 2021-06-25 | 2021-09-28 | 安徽理工大学 | Movable experimental device for high-voltage electric pulse induced cracking loaded coal containing gas |
| CN114166698A (en) * | 2022-02-08 | 2022-03-11 | 中国矿业大学(北京) | Method and system for evaluating gas diffusion capacity of coal micro-channel under competitive adsorption |
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