CN206573380U - Coal petrography triaxial creepage seepage tests system - Google Patents
Coal petrography triaxial creepage seepage tests system Download PDFInfo
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- CN206573380U CN206573380U CN201720218607.6U CN201720218607U CN206573380U CN 206573380 U CN206573380 U CN 206573380U CN 201720218607 U CN201720218607 U CN 201720218607U CN 206573380 U CN206573380 U CN 206573380U
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- coal petrography
- gas
- triaxial
- seepage
- pressurizing piston
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Abstract
Coal petrography triaxial creepage seepage tests system, including triaxial cell, loading device, deformation test device, seepage apparatus and data acquisition device；Triaxial cell includes the seat of honour, lower seat and bolt；Loading device include pressurizing piston bar, guider, oil pump and enter, outage；Deformation test device includes axial strain sensor, metal wire and sensor wire post；Seepage apparatus includes high pressure gas gas cylinder, pressure-reducing valve, air gauge, air inlet pipe, escape pipe and gas flowmeter；Data acquisition device includes data wire and computer.The utility model simple operation, precision is higher, achievable long-time creep loading, gas porous flow rule in creep process in the coal petrography stress field under the conditions of research long-duration load.
Description
Technical field
The utility model belongs to creep seepage apparatus technical field, more particularly to a kind of coal petrography triaxial creepage seepage tests system
System.
Background technology
Coal is buried in earth formation deep, is a kind of typical double-porosity model, with the gas of its association to adsorb
State, free state preservation are in wherein.Adsorption and desorption, diffusion and the seepage flow that flowing of the gas in coal seam includes methane gas were waited
Journey, is an extremely complex migration process.The permeability of coal containing methane gas is reflection methane gas seepage flow difficulty or ease journey in coal seam
The important indicator of degree, indicates the key parameter of coal bed gas extraction complexity.As colliery enters deep mining, coal seam
The adverse circumstances of high-ground stress, Thief zone pressure and High-geotemperature will be entered, have very strong creep special under external load effect
Property.Coal-bed gas is influenceed in migration process by the deformation of creep, while the deformation of creep can also influence coal-bed gas in turn
Flowing, here it is so-called creep-seepage flow coupling effect.Exactly this effect causes around coal bed gas extraction drilling
Gas Flow becomes more complicated, because coal bed gas extraction is related to China's coal-mine safe working and the comprehensive utilization of gas etc.
Problem, is weighed very much so rheological behavior, stand under load destructive characteristics and the gas porous flow of research coal containing methane gas-adsorption-desorption rule have
The realistic meaning wanted.Existing coal petrography triaxial creepage seepage tests system architecture is complicated, and precision shortcoming, sealing is poor, is not easy to
Operation.
Utility model content
The utility model is in order to solve weak point of the prior art there is provided a kind of simple operation, and precision is higher, can
Realize the coal petrography triaxial creepage seepage tests system of long-time creep loading.
In order to solve the above technical problems, the utility model is adopted the following technical scheme that：Coal petrography triaxial creepage seepage tests system
System includes triaxial cell, loading device, deformation test device, seepage apparatus and data acquisition device；Triaxial cell includes
The seat of honour, lower seat and bolt, are provided with seal washer, and be bolted fixation between the seat of honour and lower seat；Loading device includes adding
Pressure piston rod, guider, oil pump and enter, outage, guide sleeve and guider ensure pressurizing piston bar in vertical direction pair
Coal petrography implements lasting loading, and fuel tank is connected into, outage by oil pump and stop valve, and is passed into triaxial pressure room；Become
Shape test device includes axial strain sensor, metal wire and sensor wire post, and shrinkable sleeve is outside coal petrography, and two ends are by gold
Category hoop is fixed, and axial strain sensor is fixed on pressurizing piston bar, is connected to by metal wire on sensor wire post；Seepage flow is filled
Put including high pressure gas gas cylinder, pressure-reducing valve, air gauge, air inlet pipe, escape pipe and gas flowmeter, high pressure gas gas cylinder outlet side
Provided with switch, pressure-reducing valve, air gauge and stop valve are sequentially provided with air inlet pipe, and be passed through pressurizing piston bar, escape pipe access gas
Flowmeter body；The data wire that data acquisition device is included on data wire and computer, sensor wire post is connected to computer, gas
The information of flowmeter body is also communicated to computer.
Sealed, and with ferrule heat-shrink tube two ends are reinforced using the special fluid sealant of Kraft between coal petrography and heat-shrink tube.
Using above-mentioned technical proposal, the utility model has the following advantages that.
1st, coal petrography triaxial creepage seepage tests system of the present utility model includes triaxial cell, loading device, deformation survey
Trial assembly is put, seepage apparatus and data acquisition device, and triaxial cell is bolted and constituted by the seat of honour and lower seat, is sealed good
It is good, provide preferable confined space for the coal petrography of creep seepage tests；Loading device is divided into axial loading device and radially added
Carry and put, guide sleeve and guider ensure pressurizing piston bar in vertical direction implements continuous uniform loading, fuel tank to coal petrography
Hydraulic oil by oil pump, stop valve and enter, outage is passed into triaxial pressure room, realize to the uniform of the radial direction of coal petrography plus
Carry；Deformation test device is used to monitor the axial strain situation in coal petrography creep process in real time；Seepage apparatus is used to provide certain
The methane gas of pressure, realizes the flow event of coal petrography under loading environment；Data acquisition device is used to gather methane gas in real time
Deformed under flow and coal petrography loaded condition.
2nd, the utility model uses deformation test device, and shrinkable sleeve is outside coal petrography, and two ends are fixed by ferrule, axially
Strain transducer is fixed on pressurizing piston bar, and deformed with the axial deformation of coal petrography, and strain information passes through metal
Line is transferred on sensor wire post, and by computer real-time acquisition, data are shown on computers in the form of figure line, are section
The personnel of grinding save data processing time.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1：Lower seat；2：The seat of honour；3：Bolt；4：Enter, outage；5：Guider；6：Pressurizing piston bar；7：Air inlet
Pipe；8：Guide sleeve；9：Empty stomata；10：Ferrule；11：Heat-shrink tube；12：Axial strain sensor；13：Coal petrography；14：Metal
Line；15：Sensor wire post；16：Data wire；17：Escape pipe；18：Gas flowmeter；19：Computer；20：Fuel tank；21：Oil
Pump；22：Stop valve；23：High pressure gas gas cylinder；24：Switch；25：Pressure-reducing valve；26：Air gauge；27：Stop valve；28：Sealing gasket
Circle.
Embodiment
As shown in figure 1, coal petrography triaxial creepage seepage tests system of the present utility model includes triaxial cell, loading dress
Put, deformation test device, seepage apparatus and data acquisition device；Triaxial cell includes the seat of honour 2, lower seat 1 and bolt 3, the seat of honour 2
Seal washer 28 is provided between lower seat 1, and is connected by bolt 3；Loading device includes pressurizing piston bar 6, is oriented to dress
Put 5, oil pump 21 and enter, outage 4, guide sleeve 8 and guider 5 ensure that pressurizing piston bar 6 is real to coal petrography 13 in vertical direction
Apply lasting loading, fuel tank 20 is connected into, outage 4 by oil pump 21 and stop valve 22, and is passed into triaxial pressure room；Become
Shape test device includes axial strain sensor 12, metal wire 14 and sensor wire post 15, and heat-shrink tube 11 is enclosed on outside coal petrography 13
Portion, two ends are fixed by ferrule 14, and axial strain sensor 12 is fixed on pressurizing piston bar 6, and biography is connected to by metal wire 14
On sensor binding post 15；Seepage apparatus includes high pressure gas gas cylinder 23, pressure-reducing valve 25, air gauge 26, air inlet pipe 7, escape pipe 17
With gas flowmeter 18, the outlet side of high pressure gas gas cylinder 23 is provided with switch 24, air inlet pipe 7 and is sequentially provided with pressure-reducing valve 25, air pressure
Table 26 and stop valve 27, and it is passed through pressurizing piston bar 6, the incoming gas flow gauge 18 of escape pipe 17；Data acquisition device includes number
According to line 16 and computer 19, the data wire 16 on sensor wire post 15 is connected to computer 19, the information of gas flowmeter 18
It is also communicated to computer 19.
Sealed between coal petrography 13 and heat-shrink tube 11 using the special fluid sealant of Kraft, and with ferrule 10 to 11 liang of heat-shrink tube
End is reinforced.
The course of work of the present utility model is：Coal petrography 13 is placed in immediately below pressurizing piston bar 6, last layer Kraft is applied special
Fluid sealant, puts heat-shrink tube 11, and blowing heat-shrink tube 11 with hot blast makes its contraction pack tightly coal petrography 13, then with ferrule 10 to pyrocondensation
The upper and lower end of pipe 11 is reinforced, it is ensured that coal petrography 13 is separated with triaxial cell, then axial strain sensor 12 is fixed on into pressurizing piston
On bar 6, the metal wire 14 that its lower end is drawn is connected on sensor wire post 15；Seal washer is installed between the seat of honour 2 and lower seat 1
28, and be connected by bolt 3；Apply certain axial load value to pressurizing piston bar 6, open emptying stomata 9 and stop valve
22, start oil pump 21, the hydraulic oil in fuel tank 20 is by entering, outage 4 enters and full of triaxial cell, hydraulic oil is to coal petrography
13 maintain certain confined pressure load, close emptying stomata 9, stop valve 22 and oil pump 21；Finally, high pressure gas gas cylinder 24 is opened to go out
The switch 24 and stop valve 27 at gas end, adjust pressure-reducing valve 25, make gas pressure value, methane gas needed for the display experiment of air gauge 26
Enter by air inlet pipe 7 from the upper end of coal petrography 13, migrate to lower end by escape pipe 17 and gas flowmeter 18；In process of the test,
Computer 19 can gather the creep data and seepage data of coal petrography 13 in real time, and show coal containing methane gas in the form of images
Load-deformation curve.
Claims (2)
1. coal petrography triaxial creepage seepage tests system, it is characterised in that：Including triaxial cell, loading device, deformation test dress
Put, seepage apparatus and data acquisition device；Triaxial cell includes the seat of honour, lower seat and bolt, provided with close between the seat of honour and lower seat
Seal washer, and it is bolted fixation；Loading device include pressurizing piston bar, guider, oil pump and enter, outage, lead
Ensure that pressurizing piston bar implements lasting loading to coal petrography in vertical direction to set and guider, fuel tank passes through oil pump and stop valve
It is connected into, outage, and is passed into triaxial pressure room；Deformation test device include axial strain sensor, metal wire and
Sensor wire post, shrinkable sleeve is outside coal petrography, and two ends are fixed by ferrule, and axial strain sensor is fixed on pressurizing piston
On bar, it is connected to by metal wire on sensor wire post；Seepage apparatus includes high pressure gas gas cylinder, pressure-reducing valve, air gauge, air inlet
Pipe, escape pipe and gas flowmeter, high pressure gas gas cylinder outlet side are sequentially provided with pressure-reducing valve, air pressure provided with switching in air inlet pipe
Table and stop valve, and it is passed through pressurizing piston bar, escape pipe incoming gas flow gauge；Data acquisition device includes data wire and calculating
Data wire on machine, sensor wire post is connected to computer, and the information of gas flowmeter is also communicated to computer.
2. coal petrography triaxial creepage seepage tests system according to claim 1, it is characterised in that：Between coal petrography and heat-shrink tube
Sealed, and heat-shrink tube two ends are reinforced using the special fluid sealant of Kraft with ferrule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218607.6U CN206573380U (en) | 2017-03-08 | 2017-03-08 | Coal petrography triaxial creepage seepage tests system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720218607.6U CN206573380U (en) | 2017-03-08 | 2017-03-08 | Coal petrography triaxial creepage seepage tests system |
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| Publication Number | Publication Date |
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| CN206573380U true CN206573380U (en) | 2017-10-20 |
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| CN201720218607.6U Expired - Fee Related CN206573380U (en) | 2017-03-08 | 2017-03-08 | Coal petrography triaxial creepage seepage tests system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120644A (en) * | 2017-12-20 | 2018-06-05 | 湖南科技大学 | The creep test device and method of duct rock sample under a kind of gas pressure |
| CN108489799A (en) * | 2018-02-27 | 2018-09-04 | 中国科学院武汉岩土力学研究所 | A kind of three axis of rock gas/naked triaxial compression test device, system and method |
| CN109187926A (en) * | 2018-09-18 | 2019-01-11 | 太原理工大学 | Three axis seepage flow test device of fractured coal and rock and desorption-diffusion-seepage tests system |
| CN110487703A (en) * | 2019-10-01 | 2019-11-22 | 太原理工大学 | Hypotonic coal-bed gas slips coefficient accurate measurement method |
| WO2020029497A1 (en) * | 2018-08-06 | 2020-02-13 | Xi'an University Of Science And Technology | A seepage-creep and mechanical experimental system for coal and rock mass containing gas under triaxial loading in low-temperature environment |
| CN111982699A (en) * | 2020-09-01 | 2020-11-24 | 西南交通大学 | Unsaturated soil compression characteristic and permeability characteristic test device |
| CN112832743A (en) * | 2021-01-15 | 2021-05-25 | 西南石油大学 | Rapid-measurement type cement sheath integrity experimental device and evaluation method |
| CN112858020A (en) * | 2021-01-14 | 2021-05-28 | 中国石油大学(北京) | Rock triaxial confining pressure loading and seepage test device and method |
-
2017
- 2017-03-08 CN CN201720218607.6U patent/CN206573380U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120644A (en) * | 2017-12-20 | 2018-06-05 | 湖南科技大学 | The creep test device and method of duct rock sample under a kind of gas pressure |
| CN108120644B (en) * | 2017-12-20 | 2020-06-16 | 湖南科技大学 | Creep test device of pore rock test piece under atmospheric pressure effect |
| CN108489799A (en) * | 2018-02-27 | 2018-09-04 | 中国科学院武汉岩土力学研究所 | A kind of three axis of rock gas/naked triaxial compression test device, system and method |
| WO2020029497A1 (en) * | 2018-08-06 | 2020-02-13 | Xi'an University Of Science And Technology | A seepage-creep and mechanical experimental system for coal and rock mass containing gas under triaxial loading in low-temperature environment |
| CN109187926A (en) * | 2018-09-18 | 2019-01-11 | 太原理工大学 | Three axis seepage flow test device of fractured coal and rock and desorption-diffusion-seepage tests system |
| CN109187926B (en) * | 2018-09-18 | 2021-04-20 | 太原理工大学 | Three-axis seepage test device for fractured coal rock mass and desorption-diffusion-seepage test system |
| CN110487703A (en) * | 2019-10-01 | 2019-11-22 | 太原理工大学 | Hypotonic coal-bed gas slips coefficient accurate measurement method |
| CN110487703B (en) * | 2019-10-01 | 2021-12-31 | 太原理工大学 | Method for accurately measuring gas slip coefficient of low-permeability coal seam |
| CN111982699A (en) * | 2020-09-01 | 2020-11-24 | 西南交通大学 | Unsaturated soil compression characteristic and permeability characteristic test device |
| CN112858020A (en) * | 2021-01-14 | 2021-05-28 | 中国石油大学(北京) | Rock triaxial confining pressure loading and seepage test device and method |
| CN112832743A (en) * | 2021-01-15 | 2021-05-25 | 西南石油大学 | Rapid-measurement type cement sheath integrity experimental device and evaluation method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20180308 |