CN206583829U - Coal containing methane gas microstructure change experimental system under cold service - Google Patents
Coal containing methane gas microstructure change experimental system under cold service Download PDFInfo
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- CN206583829U CN206583829U CN201720326313.5U CN201720326313U CN206583829U CN 206583829 U CN206583829 U CN 206583829U CN 201720326313 U CN201720326313 U CN 201720326313U CN 206583829 U CN206583829 U CN 206583829U
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Abstract
The utility model discloses coal containing methane gas microstructure change experimental system under a kind of cold service, including pressure control device, coal sample obturator, rotation carrying apparatus, semiconductor temperature device and X CT scan devices.Semiconductor temperature device includes temperature controller, semiconductor chilling plate, temperature sensor, temperature sensor and semiconductor chilling plate are connected with temperature controller respectively, and temperature controller monitors, records temperature data and the electric current that semiconductor chilling plate is inputted is adjusted to realize high-precision temperature control in real time.Coal sample is located between x-ray source and detector, rotatable stage is rotatably connected on sample support frame, reducing motor is provided with sample support frame, reducing motor output shaft and rotatable stage transmission chain connect, coal sample is rotated by 360 ° with rotatable stage, one two dimensional image of an angle acquisition is often rotated, so as to reconstruct complete 3-D view, by CT scan technology, fracturing mechanism of the low temperature to coal seam with gas can be disclosed.
Description
Technical field
The utility model is related to coal containing methane gas microstructure under coal detection technique field, more particularly to a kind of cold service
Change experimental system.
Background technology
Coal bed gas is used as one of major member of Gas Energy Source family three and the exploration and development one of natural gas and gas hydrates
Sample is increasingly subject to the attention of countries in the world.China is one of coal bed gas resource the abundantest country, and cbm development utilizes tool
There is important realistic meaning.But China's coalbed methane reservoir typically has the characteristics of high storage is hypotonic, clay content is high, conventional waterpower
Pressure break is needed to consume substantial amounts of water resource, and wound is returned to coal seam reservoirs generation solid matter is injured, water locks water fire extinguishing and fracturing fluid is low
Evil, fracturing effect is not satisfactory.In recent years, in order to improve coal-bed-gas production-increase effect, low-temperature anhydrous fracturing technique is increasingly subject to weight
Depending on the experimental facilities of coal containing methane gas microstructure change under cold service can be observed at present by lacking.
Utility model content
The purpose of this utility model is to provide coal containing methane gas microstructure change experimental system under a kind of cold service, to solve
Certainly lack the problem of observing the experimental facilities of coal containing methane gas microstructure change under cold service, pass through CT scan technical research
Fracturing mechanism of the low temperature to coal seam with gas.
To achieve these goals, the utility model is adopted the following technical scheme that：
Coal containing methane gas microstructure change experimental system under a kind of cold service, including pressure control device, coal sample are closed
Device, rotation carrying apparatus, semiconductor temperature device and X-CT scanning means；
The pressure control device includes high pressure gas gas cylinder, pressure-reducing valve, pressure gauge and pressure pipeline；Pressure pipeline air inlet
End is connected with high pressure gas gas cylinder sealing, and the pressure-reducing valve and pressure gauge are arranged on pressure pipeline, high pressure gas gas cylinder
Exit is provided with bottle valve.
The coal sample obturator includes sample locular wall, sample support frame, sample room air inlet and vacuum heat-insulating layer outer wall；
The vacuum heat-insulating layer outer wall and sample locular wall are in square tube shape, and vacuum heat-insulating layer outer wall top and bottom is closed, sample room
Wall is located in vacuum heat-insulating layer outer wall, and the upper end inner surface of sample locular wall is sealedly and fixedly connected with the sample room air inlet, sample
The outer surface of product locular wall surrounds vacuum heat-insulating layer with the inner surface of vacuum heat-insulating layer outer wall；The side bottom of vacuum heat-insulating layer outer wall
Higher than the homonymy bottom of sample locular wall；Inner surface is fixedly connected with the sample support frame in the middle part of sample locular wall；Pressure pipeline outlet
End is stretched into vacuum heat-insulating layer outer wall and connected with the sealing of sample room air inlet.
The rotation carrying apparatus includes rotatable stage and reducing motor is switched；The rotatable stage is rotatably connected on
On sample support frame, the level of reducing motor, the reducing motor output shaft and rotatable stage is provided with sample support frame
Kernel of section position is fixedly connected；, reducing motor is by power supply offer rotary power and is connected with reducing motor switch, deceleration
Motor switch is arranged at outside vacuum heat-insulating layer outer wall；Coal sample to be measured is placed on rotatable stage.
The semiconductor temperature device includes temperature sensor, temperature controller, semiconductor chilling plate, radiator and wind
Fan；The semiconductor chilling plate includes chill surface and radiating surface, and the side bottom of vacuum heat-insulating layer outer wall is higher than sample locular wall
Homonymy bottom, chill surface is fitted in the outer surface of the sample locular wall below the side vacuum heat-insulating layer outer wall；Radiating surface connection is described
The connection fan on the outside of radiator, radiator；The temperature sensor is located in the sample room below rotatable stage, temperature
Sensor and semiconductor chilling plate connect the temperature controller respectively.
The X-CT scanning means includes x-ray source and detector；The x-ray source is fixedly installed on the detector
Sample room both sides external simultaneously has interval between sample locular wall respectively；Imaging plane center, coal sample center and the X of detector are penetrated
Line source is centrally located on same horizontal linear, and the imaging plane of detector is vertical with the straight line.
The pressure pipeline is provided with stop valve.
The coal sample obturator also includes O-ring seal, and the upper end inner surface of the sample locular wall passes through described O-shaped
Sealing ring is sealedly and fixedly connected with the sample room air inlet.
The utility model uses semiconductor temperature device, including temperature controller, semiconductor chilling plate, temperature sensor,
Semiconductor chilling plate does not need any refrigerant, without pollution sources, can continuously work, cooling time is fast, temperature range is big, and
There is no rotary part, gyroscopic action will not be produced, without slide unit, do not shaken and noise during work, install easy.Temperature
Sensor and semiconductor chilling plate are connected with temperature controller respectively, and temperature controller monitors, records temperature data and right in real time
The electric current of semiconductor chilling plate input adjusts to realize high-precision temperature control.
Coal sample is positioned in the groove of rotatable stage by the utility model, plays a part of fixed coal sample, and coal sample is penetrated positioned at X
Between line source and detector, rotatable stage is rotatably connected on sample support frame, and reducing motor is provided with sample support frame,
Reducing motor output shaft is fixedly connected with the horizontal cross-section centre of rotatable stage, and it is dynamic that reducing motor provides rotation by power supply
Power is simultaneously connected with reducing motor switch, and coal sample is rotated by 360 ° with rotatable stage, often rotates an angle（<1°）Collection
One two dimensional image, so as to reconstruct complete 3-D view.By CT scan technology, splitting for coal sample internal structure can be obtained
Gap distribution situation, discloses fracturing mechanism of the low temperature to coal seam with gas, and the utility model is simple to operate, easy to use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the left view of coal sample obturator and semiconductor temperature device in Fig. 1;
Fig. 3 is Fig. 1 A-A profiles；
Fig. 4 is Fig. 1 B-B profiles.
Shown in figure：1- high pressure gas gas cylinders, 2- pressure-reducing valves, 3- pressure gauges, 4- stop valves, 5- pressure pipelines, 6- samples
Room air inlet, 7-O type sealing rings, 8- sample rooms, 9- sample locular walls, 10- coal samples, 11- rotatable stages, 12- sample supports
Frame, 13- temperature sensors, 14- reducing motors switch, 15- temperature controllers, 16- radiators, 17- fans, 18- semiconductor systems
Cold, 19-X radiographic sources, 20- detectors, 21-X rays, 22- vacuum heat-insulating layers, 23- vacuum heat-insulating layer outer walls, 24- chill surfaces,
25- radiating surfaces, 26- bottle valves.
Embodiment
Embodiment of the present utility model is further illustrated with reference to accompanying drawing.
As Figure 1-4, coal containing methane gas microstructure change experimental system includes pressure control device, coal under cold service
Sample obturator, rotation carrying apparatus, semiconductor temperature device and X-CT scanning means.
The pressure control device includes high pressure gas gas cylinder 1, pressure-reducing valve 2, pressure gauge 3, stop valve 4 and pressure pipeline 5；
The inlet end of pressure pipeline 5 is connected with the sealing of high pressure gas gas cylinder 1, and the pressure-reducing valve 2, pressure gauge 3 and stop valve 4 are arranged at pressure
On hydraulic piping 5, the exit of high pressure gas gas cylinder 1 is provided with bottle valve 26.
The coal sample obturator includes sample locular wall 9, sample support frame 12, sample room air inlet 6, the and of O-ring seal 7
Vacuum heat-insulating layer outer wall 23.The vacuum heat-insulating layer outer wall 23 and sample locular wall 9 are in square tube shape, and vacuum heat-insulating layer outer wall 23 is pushed up
Portion is closed with bottom, and sample locular wall 9 is located in vacuum heat-insulating layer outer wall 23, the outer surface of sample locular wall 9 and vacuum heat-insulating layer
The inner surface of outer wall 23 surrounds vacuum heat-insulating layer 22；The side bottom of vacuum heat-insulating layer outer wall 23 is higher than the homonymy of sample locular wall 9
Bottom；The upper end inner surface of sample locular wall 9 is sealedly and fixedly connected by the O-ring seal 7 with the sample room air inlet 6；
The middle part inner surface of sample locular wall 9 is fixedly connected with the sample support frame 12.Vacuum heat-insulating layer outer wall is stretched into the outlet side of pressure pipeline 5
23 and with sample room air inlet 6 sealing connect, the inner surface of sample locular wall 9 and sample room air inlet 6 surround the space of sample room 8, very
The empty inner surface of thermal insulation layer outer wall 23 and sample locular wall 9 outer surface surrounds the sealed space of vacuum heat-insulating layer 22, vacuum heat-insulating layer 22
Sample room 8 is wrapped up to 8, sample room insulation effect, high pressure gas gas cylinder 1 can provide the methane gas needed for experiment to sample room 8
Pressure.
The rotation carrying apparatus includes rotatable stage 11 and reducing motor switch 14；The rotatable stage 11 is rotated
It is connected on sample support frame 12, reducing motor, reducing motor output shaft and rotatable stage is provided with sample support frame 12
Horizontal cross-section centre be fixedly connected, reducing motor is provided power by power supply and 14 is connected with reducing motor switch,
Reducing motor switch 14 is arranged on outside vacuum heat-insulating layer outer wall 23, and reducing motor is not show in conventional equipment, figure；Rotate loading
Coal sample 10 to be measured is placed on platform 11, coal sample 10 to be measured rotates with the 360 deg of rotatable stage 11.
The semiconductor temperature device includes temperature sensor 13, temperature controller 15, semiconductor chilling plate 18, radiator
16 and fan 17；The semiconductor chilling plate 18 includes chill surface 24 and radiating surface 25, the side bottom of vacuum heat-insulating layer outer wall 23
End is higher than the homonymy bottom of sample locular wall 9, and chill surface 24 is fitted in the sample locular wall 9 of the lower section of side vacuum heat-insulating layer outer wall 23
Outer surface；Radiating surface 25 connects the radiator 16, the outside of the radiator 16 connection fan 17.The temperature sensor 13
In in the sample room 8 of the lower section of rotatable stage 11, temperature sensor 13 and semiconductor chilling plate 18 connect the temperature control respectively
Device 15 processed, the monitoring in real time of temperature controller 15, record temperature data and the electric current to the input of semiconductor chilling plate 18, which are adjusted, comes real
Existing high-precision temperature control.Temperature controller 15 is preferred to use the production of Dalian Bonded Area Ai Ke new instruments Co., Ltd
2704-2704F type multiloop controllers.
The X-CT scanning means includes x-ray source 19 and detector 20；The x-ray source 19 is consolidated with the detector 20
Surely it is arranged on the both sides external of sample room 8 and there is interval between sample locular wall 9 respectively；The imaging plane center of detector 20,
The center of coal sample 10 and x-ray source 19 are centrally located on same horizontal linear, and the imaging plane of detector 20 is vertical with the straight line.
Coal sample 10 rotates 360 deg with rotatable stage 11, when the X-ray 21 that x-ray source 19 is projected passes through coal sample 10, throws
The X-ray 21 penetrated after decay arrives at the formation two dimensional image of detector 20, often rotates an angle（<1°）Gather an X-Y scheme
Picture, so as to reconstruct complete 3-D view.Sample locular wall 9 uses aluminum alloy materials, and aluminum alloy materials thermal conductivity is strong and can hold
By required pressure is tested, it can be penetrated to detect the structure of its internal coal sample 10 by X-ray 21 again.
Operation principle and process of the present utility model are：
1st, dry coal sample 10 is positioned in the groove of rotatable stage 11 and fixed, connect sample room air inlet 6, it is ensured that
The interior sealing of sample room 8 is good, opens bottle valve 26 and stop valve 4, adjusts pressure-reducing valve 2, makes the pressure needed for the display experiment of pressure gauge 3
Force value, starts x-ray source 19, and X-ray 21 penetrates vacuum heat-insulating layer 22, sample locular wall 9 and coal sample 10, reaches detector 20 and is formed
Two dimensional image, opens reducing motor switch 14, coal sample 10 rotates with the 360 deg of rotatable stage 11, often rotates an angle
Degree（<1°）A two dimensional image is gathered, so as to reconstruct complete 3-D view, the inside for obtaining coal sample 10 under normal temperature condition is micro-
Structural images are seen, x-ray source 19 is closed.
2nd, fan 17 is opened, -40 DEG C needed for the setting experiment of temperature controller 15 are then turned on, temperature controller is supervised in real time
The temperature data of sample room 8 is surveyed, records, the regulation of temperature controller 15 is input to the electric current of semiconductor chilling plate 18 to reach setting
Temperature, the heat in sample room 8 dispelled in air by radiator 16 and fan 17.Treat that temperature reaches -40 in sample room 8
X-ray source 11 is opened after DEG C, the operating procedure in 1 is repeated, obtains the internal microstructure image of coal sample 10 under -40 DEG C of environment.
3rd, before and after experimenter's com-parison and analysis low-temperature treatment coal sample 10 internal microstructure changing rule, disclose low temperature coal
The mechanism of action of rock fracturing.
Above example is only used to illustrative and not limiting the technical solution of the utility model, although with reference to above-described embodiment pair
The utility model is described in detail, it will be understood by those within the art that：The utility model can still be entered
Row modification or equivalent substitution, without departing from any modification or partial replacement of spirit and scope of the present utility model, it all should
Cover among right of the present utility model.
Claims (4)
1. coal containing methane gas microstructure change experimental system under a kind of cold service, it is characterised in that：Including pressure control device,
Coal sample obturator, rotation carrying apparatus, semiconductor temperature device and X-CT scanning means；
The pressure control device includes high pressure gas gas cylinder, pressure-reducing valve, pressure gauge and pressure pipeline；Pressure pipeline inlet end with
High pressure gas gas cylinder sealing connection, the pressure-reducing valve and pressure gauge are arranged on pressure pipeline, the outlet of high pressure gas gas cylinder
Place is provided with bottle valve；
The coal sample obturator includes sample locular wall, sample support frame, sample room air inlet and vacuum heat-insulating layer outer wall；It is described
Vacuum heat-insulating layer outer wall and sample locular wall are in square tube shape, and vacuum heat-insulating layer outer wall top and bottom is closed, sample locular wall position
In in vacuum heat-insulating layer outer wall, the upper end inner surface of sample locular wall is sealedly and fixedly connected with the sample room air inlet, sample room
The outer surface of wall surrounds vacuum heat-insulating layer with the inner surface of vacuum heat-insulating layer outer wall；The side bottom of vacuum heat-insulating layer outer wall is higher than
The homonymy bottom of sample locular wall；Inner surface is fixedly connected with the sample support frame in the middle part of sample locular wall；Stretch pressure pipeline outlet side
Enter vacuum heat-insulating layer outer wall and connected with the sealing of sample room air inlet；
The rotation carrying apparatus includes rotatable stage and reducing motor is switched；The rotatable stage is rotatably connected on sample
On support frame, the horizontal cross-section of reducing motor, the reducing motor output shaft and rotatable stage is provided with sample support frame
Centre is fixedly connected；Reducing motor is provided power by power supply and is connected with reducing motor switch, reducing motor switch
It is arranged on outside vacuum heat-insulating layer outer wall；Coal sample to be measured is placed on rotatable stage；
The semiconductor temperature device includes temperature sensor, temperature controller, semiconductor chilling plate, radiator and fan；Institute
Stating semiconductor chilling plate includes chill surface and radiating surface, and the side bottom of vacuum heat-insulating layer outer wall is higher than the homonymy bottom of sample locular wall
End, chill surface is fitted in the outer surface of the sample locular wall below the side vacuum heat-insulating layer outer wall；Radiating surface connects the radiator,
The connection fan on the outside of radiator；The temperature sensor is located in the sample room below objective table, temperature sensor and half
Conductor cooling piece connects the temperature controller respectively.
2. coal containing methane gas microstructure change experimental system under cold service according to claim 1, it is characterised in that：Institute
Stating X-CT scanning means includes x-ray source and detector；The x-ray source is fixedly installed on outside sample room with the detector
Both sides simultaneously have interval between sample locular wall respectively；Imaging plane center, coal sample center and the x-ray source centre bit of detector
In on same horizontal linear, the imaging plane of detector is vertical with the straight line.
3. coal containing methane gas microstructure change experimental system under cold service according to claim 1, it is characterised in that：Institute
Pressure pipeline is stated provided with stop valve.
4. coal containing methane gas microstructure change experimental system under cold service according to claim 1, it is characterised in that：Institute
Stating coal sample obturator also includes O-ring seal, and the upper end inner surface of the sample locular wall passes through the O-ring seal and institute
Sample room air inlet is stated to be sealedly and fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326313.5U CN206583829U (en) | 2017-03-30 | 2017-03-30 | Coal containing methane gas microstructure change experimental system under cold service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720326313.5U CN206583829U (en) | 2017-03-30 | 2017-03-30 | Coal containing methane gas microstructure change experimental system under cold service |
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| CN201720326313.5U Expired - Fee Related CN206583829U (en) | 2017-03-30 | 2017-03-30 | Coal containing methane gas microstructure change experimental system under cold service |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844980A (en) * | 2018-07-06 | 2018-11-20 | 郝文峰 | A kind of device measuring internal structure under material at low temperature environment |
| CN109270093A (en) * | 2018-11-12 | 2019-01-25 | 北京工业大学 | A kind of auxiliary device of industry CT Scanner |
| CN110487645A (en) * | 2019-08-22 | 2019-11-22 | 山东大学 | It is applicable in the Miniature temperature control unsaturated soil triaxial tester and method of industrial CT scan |
| CN112881441A (en) * | 2021-01-22 | 2021-06-01 | 大连理工大学 | Unlimited rotation device for CT scanning of low-temperature high-pressure sample |
| CN113030133A (en) * | 2021-02-19 | 2021-06-25 | 中国地质大学（武汉） | Constant temperature control device for CT scanning of tillite soil |
-
2017
- 2017-03-30 CN CN201720326313.5U patent/CN206583829U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844980A (en) * | 2018-07-06 | 2018-11-20 | 郝文峰 | A kind of device measuring internal structure under material at low temperature environment |
| CN109270093A (en) * | 2018-11-12 | 2019-01-25 | 北京工业大学 | A kind of auxiliary device of industry CT Scanner |
| CN109270093B (en) * | 2018-11-12 | 2021-12-24 | 北京工业大学 | Auxiliary device of industrial CT scanner |
| CN110487645A (en) * | 2019-08-22 | 2019-11-22 | 山东大学 | It is applicable in the Miniature temperature control unsaturated soil triaxial tester and method of industrial CT scan |
| US11119056B2 (en) | 2019-08-22 | 2021-09-14 | Shandong University | Miniature temperature-controlled triaxial tester for testing unsaturated soil suitable for micro-computed tomography (CT) scanning and method thereby |
| CN112881441A (en) * | 2021-01-22 | 2021-06-01 | 大连理工大学 | Unlimited rotation device for CT scanning of low-temperature high-pressure sample |
| CN113030133A (en) * | 2021-02-19 | 2021-06-25 | 中国地质大学（武汉） | Constant temperature control device for CT scanning of tillite soil |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20190330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |