CN206627410U - Coal body permeability test device under hot cold shock - Google Patents
Coal body permeability test device under hot cold shock Download PDFInfo
- Publication number
- CN206627410U CN206627410U CN201720427889.0U CN201720427889U CN206627410U CN 206627410 U CN206627410 U CN 206627410U CN 201720427889 U CN201720427889 U CN 201720427889U CN 206627410 U CN206627410 U CN 206627410U
- Authority
- CN
- China
- Prior art keywords
- pipe
- cold
- heat
- end cap
- hot
- Prior art date
- 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
Links
- 239000003245 coal Substances 0.000 title claims abstract description 106
- 230000035699 permeability Effects 0.000 title claims abstract description 36
- 230000035939 shock Effects 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 63
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000003667 anti-reflective effect Effects 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- 238000002474 experimental method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses coal body permeability test device under a kind of hot cold shock, including hot device for cooling, permeability apparatus, gas flow testing device and gas supply device.Hot device for cooling, which includes liquid nitrogen container, hot-air blower, the cold pipe of note and heat injection pipe, gas flow testing device, includes blast pipe, the second stop valve and gas flow meter；Permeability apparatus includes filling in coal sample tank, end cap, the cold pipe of heat, plectane and end cap, and gas supply device includes high pressure gas gas cylinder, airway tube, pressure-reducing valve and air gauge.The utility model can be realized to the anti-reflection of coal body by the cold alternate means of heat, and measures the permeability size for destroying coal body, so as to quantitatively illustrate the antireflective effect of the fracturing technique.Carry out antireflective effect of the analysis temperature impact to coal body using the permeability of coal body, obtain optimal temperature shock parameter, improve the efficiency of colliery operation.
Description
Technical field
It the utility model is related to coal-mining technique field, more particularly to a kind of coal body permeability test device and method of testing.
Background technology
CBM Fracturing is the core and key that cbm development utilizes.In recent years, coal bed fracturing technically has very
Much progress, ideal effect is being obtained using upper, but also exposing some problems, it would be highly desirable to solved, it is necessary to use nonconventional approaches（Heat
Cold shock）Solve the technical barrier and bottleneck of cbm development, really realize the effect of increasing production of coal bed gas.In order to study temperature punching
The pressure break effect to coal body is hit, researcher devises many devices, but rarely has the device of quantitative test coal mass fracture effect, lacks
The permeability testing experimental system of coal under few hot cold shock.
Utility model content
The purpose of this utility model is solve weak point of the prior art, there is provided one kind can pass through the cold alternating of heat
Means, realize to the anti-reflection of coal body, and measure destroy coal body permeability size hot cold shock under coal body permeability test
Experimental provision.
To achieve the above object, under hot cold shock of the present utility model coal body permeability test device include hot device for cooling,
Permeability apparatus, gas flow testing device and gas supply device；
Hot device for cooling, which includes liquid nitrogen container, hot-air blower, the cold pipe of note and heat injection pipe, hot-air blower, has fan switch；Liquid nitrogen
The tank connection cold pipe of note, notes the one end that cold pipe is connected with liquid nitrogen container and is provided with pressure charging valve and liquid feed valve；Hot-air blower connects
The heat injection pipe, heat injection pipe are provided with the first stop valve；
Gas flow testing device includes blast pipe, and blast pipe is provided with the second stop valve and gas flow meter；
Permeability apparatus includes filling in coal sample tank, end cap, the cold pipe of heat, plectane and end cap, and the lower end of the cold pipe of heat is solid vertically downward
It is scheduled at the center of plectane, part of the plectane positioned at the cold caliber of heat laterally is evenly arranged with permeable hole penetrating up and down；End
Lid coordinates with the sealing of coal sample tank top, is provided with the support level of annular in coal sample tank in side wall and bottom wall joint, and plectane is set up
It is connected on support level and with the madial wall of coal sample tank；Plectane surrounds permeable chamber with coal sample tank bottom wall below, permeable
Chamber side wall is connected with air water discharge pipe, and the part that air water discharge pipe stretches out permeable chamber has connected up the blast pipe and connected downwards
Drainpipe is connected to, drainpipe is provided with the 3rd stop valve；The bottom of plug is provided with up big and down small prismoid section in end cap, and prismoid section is inserted
Enter the cold pipe crimping sealing of the cold Guan Bingyu heat of heat；
Heat injection pipe and the cold pipe of note, which are each passed through, to be filled in and stretches into end cap in the cold pipe of heat, in heat injection pipe and the cold Guan Junyu end caps of note
Plug sealing coordinates；The pipeline section side wall of heat injection pipe and the cold pipe of note in the cold pipe of heat is uniformly provided with radial direction through hole respectively；Filled in end cap
On communicating pipe for discharging nitrogen and hot blast is vertically installed, communicating pipe bottom stretch into hot cold pipe and the upward external part in its top
Filled in lid；
Gas supply device includes high pressure gas gas cylinder, is switched at the top of high pressure gas gas cylinder by gas outlet and is connected with air guide
Pipe, airway tube are provided with pressure-reducing valve and air gauge.
The end cap is coordinated with coal sample tank top by following sealing structure：
The cylindrical place of end cap is convexly equipped with downwards connection annulus, and connection annulus bottom surface is provided with annular groove, coal sample tank top outer wall footpath
To the raised connecting plate for being provided with annular, connecting plate and it is connected the underrun bolt of annulus and is detachably fixed and link together, company
Coal sample pot sidewall more than fishplate bar is connected in annular groove, and pressure is provided with close between the side wall top of coal sample tank and the cell wall of annular groove
Seal washer；Sealing ring is less than end cap lower surface, and inlet chamber is surrounded between end cap lower surface and coal sample upper end.
The airway tube is provided with the 4th stop valve.
The utility model has the following advantages：
The utility model can be realized to the anti-reflection of coal body, and measure and destroy oozing for coal body by the cold alternate means of heat
Saturating rate size, so as to quantitatively illustrate the antireflective effect of the fracturing technique.
After the permeability that coal body is calculated by apparatus and method of the present utility model, it can be come using the permeability of coal body
Assay temperature shock obtains optimal temperature shock parameter by experiment, carried for colliery operation to the antireflective effect of coal body
For instructing, the efficiency of colliery operation is improved.
In order to preferably accurately measure the permeability of coal body, the coal in coal sample tank is not from raw coal, but special coal
Sample；Because the thermal conductivity factor of cement and coal is very close, transmission of the heat in coal body is influenceed less, so according to certain ratio
By cement, coal dust and water mix, mixture dehydration solidification dry after can approximation regard coal as, in case experiment.Mixture solidifies
During caused water flowed down by the permeable hole on plectane, discharged by drainpipe.If being not added with cement, and coal is used only
Powder, then it is difficult to prepare the integral coal sample of solidification, it is difficult to go out the coal body of underground solidification in laboratory simulation, so as to be difficult to
Permeability is tested.
The utility model proposes a kind of preparation method for simulating coal sample, is highly convenient for laboratory use, for oozing for coal body
Saturating rate experiment provides basis.
Seal washer in the utility model plays sealing function, and plug can block the cold pipe of heat in end cap, thereby ensure that
After methane gas in airway tube enters inlet chamber, coal body can only be penetrated into by coal column upper surface, and from coal column lower surface
Plectane flows out, and is discharged by blast pipe and digital display gas flowmeter.The utility model solves the seepage flow of Gas seepage well
Approach, it is ensured that methane gas can only be flowed out by coal sample, so as to provide basis for the accurate coal sample permeability that calculates.
Plug is inserted with communicating pipe in end cap of the present utility model, the nitrogen vaporized in the cold pipe of heat can be quickly discharged into environment sky
In gas, avoid the cold intraductal pressure of heat excessive and flow backwards liquid nitrogen, so as to ensure the lasting supply of liquid nitrogen, realize to around the cold pipe of heat
The cold shock of coal body；Certainly, communicating pipe can also discharge hot blast in time, ensure that hot blast can be without interruption.In addition, this practicality
New structure is simple, is easily installed and uses.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic top plan view of plectane in Fig. 1；
Fig. 3 is the enlarged drawing at A in Fig. 1；
Fig. 4 is the enlarged drawing at B in Fig. 1.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, coal body permeability test device includes heat under hot cold shock of the present utility model
Device for cooling, permeability apparatus, gas flow testing device and gas supply device；
Hot device for cooling, which includes liquid nitrogen container 1, hot-air blower 5, the cold pipe 4 of note and heat injection pipe 9, hot-air blower 5, has fan switch
6；Liquid nitrogen container 1 connects the cold pipe 4 of note, notes the one end that cold pipe 4 is connected with liquid nitrogen container 1 and is provided with pressure charging valve 2 and liquid feed valve 3；
Hot-air blower 5 connects the heat injection pipe 9, and heat injection pipe 9 is provided with the first stop valve 8；
Gas flow testing device includes blast pipe 21, and blast pipe 21 is provided with the second stop valve 22 and digital display gas flow
Meter 23, for measuring the flow of gas in real time.
Permeability apparatus includes coal sample tank 14, end cap 10, the cold pipe 15 of heat, plug 13 in plectane 16 and end cap, under the cold pipe 15 of heat
End is fixed at the center of plectane 16 vertically downward, and plectane 16 is evenly arranged with positioned at the part of the cold radial outside of pipe 15 of heat
Under penetrating permeable hole 51；Plectane 16 is not provided with permeable hole positioned at the part of the cold radially inner side of pipe 15 of heat, so as to close heat
The bottom of cold pipe 15；
End cap 10 coordinates with the sealing of the top of coal sample tank 14, is provided with the branch of annular in coal sample tank 14 in side wall and bottom wall joint
Step 52 is supportted, plectane 16 is erected on support level 52 and is connected with the madial wall of coal sample tank 14；Plectane 16 with below
The bottom wall of coal sample tank 14 surrounds permeable chamber 53, and the permeable side wall of chamber 53 is connected with air water discharge pipe 18, and air water discharge pipe 18 stretches out permeable
The part of chamber 53 has connected up the blast pipe 21 and has been connected with drainpipe 59 downwards, and drainpipe 59 is provided with the 3rd stop valve
20；The bottom of plug 13 is provided with up big and down small prismoid section 54 in end cap, and prismoid section 54 is inserted the cold pipe 15 of heat and pressed with the cold pipe 15 of heat
Connect sealing；
Heat injection pipe 9 and the cold pipe 4 of note are each passed through plug 13 in end cap and stretched into the cold pipe 15 of heat, and heat injection pipe 9 and the cold pipe 4 of note are equal
Coordinate with the sealing of plug 13 in end cap；The pipeline section side wall of heat injection pipe 9 and the cold pipe 4 of note in the cold pipe 15 of heat is uniformly provided with radially respectively
Through hole；Setting radial direction through hole is routine techniques with space in communicating pipe and the pipe external space on tube wall, and the not shown radial direction is led to
Hole.Communicating pipe 24 for discharging nitrogen and hot blast is vertically installed on plug 13 in end cap, communicating pipe 24 bottom stretch into the cold pipe of heat
15 and its top stretch out plug 13 in end cap upwards；
Gas supply device includes high pressure gas gas cylinder 30, and the top of high pressure gas gas cylinder 30 passes through the connection of gas outlet switch 29
There is airway tube 25, airway tube 25 is provided with pressure-reducing valve 28 and air gauge 27, and methane gas is supplied for permeability apparatus.
The end cap 10 is coordinated with the top of coal sample tank 14 by following sealing structure：
10 cylindrical place of end cap is convexly equipped with downwards connection annulus 55, and connection annulus 55 bottom surface is provided with annular groove 56, coal sample tank 14
Top exterior walls radial protrusion is provided with the connecting plate 57 of annular, and connecting plate 57 and the underrun bolt 12 for being connected annulus 55 are detachable
It is fixed together, the side wall of coal sample tank 14 of connecting plate more than 57 is connected in annular groove 56, the side wall top of coal sample tank 14
Pressure is provided with seal washer 11 between the cell wall of annular groove 56；The structure that this sealing coordinates is very firm, seal degree it is high and
It is easily installed and dismantles.Sealing ring 11 is less than the lower surface of end cap 10, surrounded between the lower surface of end cap 10 and the top of coal sample tank 14 into
Air cavity 58.
The airway tube 25 is provided with the 4th stop valve 26, after test job is completed, simultaneously closes off gas outlet switch 29
With the 4th stop valve 26, can prevent at the gas backflow containing small coal particle to air gauge 27 and at pressure-reducing valve 28, so as to
Protect air gauge 27 at and pressure-reducing valve 28.
Wherein, the material of coal sample tank 14 is aluminium alloy, and the material of the cold pipe 15 of heat preferably uses 304 stainless steels.Filled in end cap
13 materials used is polytetrafluoroethylene (PTFE).
The invention also discloses surveyed using the coal body permeability of coal body permeability test device under above-mentioned hot cold shock
Method for testing, carry out according to the following steps successively：
First step is to prepare coal sample 17；Coal sample 17 is made up of the raw material of following weight：10~30 parts of cement, coal
60~90 parts of powder, add suitable quantity of water to be poured into after being mixed evenly on the plectane 16 in coal sample tank 14, make the height and coal of compound
The top of sample tank 14 is flush, and then stands until compound solidifies；
In compound process of setting, the water in compound flows downwardly to permeable chamber 53 through the permeable hole 51 of plectane 16；Beat
The 3rd stop valve 20 is opened, closes the second stop valve 22, water is discharged by drainpipe 59；Formation after compound dehydration solidification is dried
Rationality matter and the close coal sample 17 of coal, in case carrying out permeability test.After coal sample 17 prepares, by end cap 10 by bolt 12 with
Coal sample tank 14 is secured together, while notes cold pipe 4 and heat injection pipe 9 through the cold pipe 15 of the insertion of plug 13 heat in end cap；
Second step is that temperature shock is carried out to coal sample 17, including thermal shock and cold shock；
It is thermal shock first, opens the fan switch 6 on hot-air blower 5, fan switch 6 has regulation temperature control panel 7, will
The leaving air temp of hot-air blower 5 is adjusted to 300 ± 10 DEG C, while opens the first stop valve 8, and hot blast enters heat by heat injection pipe 9
In cold pipe 15, and the inwall of the cold pipe 15 of heat is uniformly blown to from the radial direction through hole of the side wall of heat injection pipe 9, the inwall of the cold pipe 15 of heat is by heat
Conduct to coal sample 17；The duration of heat of hot-air blower 5 is adjusted according to test experiments requirement within 10-60 minutes；Close
Hot blast is sent in the stop valve 8 of fan switch 6 and first, stopping；
Next to that cold shock, adjusts the pressure charging valve 2 on liquid nitrogen container 1, liquid feed valve 3 is opened, liquid nitrogen enters rapidly by noting cold pipe 4
Enter in the cold pipe 15 of heat, the inner chamber of the cold pipe 15 of heat is uniformly sprayed onto from the radial direction through hole for noting the cold side wall of pipe 4, the cold pipe 15 of heat transmits cold
To coal sample 17, coal sample 17 is cooled down rapidly；Liquid nitrogen gasifies in the cold pipe 15 of heat, and the nitrogen after gasification passes through the row of communicating pipe 24
Go out；After noting cold 30 minutes, liquid feed valve 3 is closed；
According to the requirement of test experiments, thermal shock and cold shock circulation are carried out 1-10 times, and preferable cycle-index is 1-3
Secondary, specific number is specifically determined by test experiments personnel, and thermal shock and cold shock produce hot cold shock effect, coal to coal sample 17
Body destroys damage, the increase of the permeability of coal sample 17；
Third step is the permeability for testing coal sample 17；Open the gas outlet switch 29 in high pressure gas gas cylinder 30, regulation
Pressure-reducing valve 28, import gas pressure P1, P1 that record air gauge 27 is now shown unit are MPa；The 4th stop valve 26 is opened,
Methane gas enters inlet chamber 58 by airway tube 25；Keep air-suction state more than 10 minutes, then open the second stop valve
22, methane gas enters the body of coal sample 17 by the upper surface of coal sample 17, is entered then down through the permeable hole 51 on plectane 16
In permeable chamber 53, methane gas is then flowed out by air water discharge pipe 18 and blast pipe 21, in the process on blast pipe 21
Digital display gas flowmeter 23 shows gas flow, and flow value Q, flow value Q are recorded after the registration of digital display gas flowmeter 23 is stable
Unit be a cube meter per second；
Methane gas by coal sample 17, permeable hole 51, permeable chamber 53 enter blast pipe 21 after its pressures near atmospheric P0,
P0 unit is MPa, and the height of coal sample 17 is H, and H unit is rice；Methane gas is coal sample 17 in the area of mobile section
The area S, S of horizontal cross-section unit for square metre, methane gas viscosity coefficient is constant μ（The viscosity coefficient of gas with various is equal
, can be by tabling look-up to obtain for constant）, the permeability K of coal body 17 is：
After the permeability for calculating coal body, increasing of the assay temperature shock to coal body can be carried out using the permeability of coal body
Saturating effect, optimal temperature shock parameter is obtained by experiment, is provided guidance for colliery operation, is improved the efficiency of colliery operation.
In the third step, after keeping air-suction state more than 10 minutes, before opening stop valve 22, pass through closing
Whether the registration of the observation air gauge 27 of gas outlet switch 29 is stablized to examine air-tightness, if turned off 30 points after gas outlet switch 29
Clock, the registration fluctuation range of air gauge 27 are less than or equal to 0.01MPa, then judge that system air-tightness is good, now open second section
Only valve 22 carries out subsequent operation；If the registration fluctuation range of air gauge 27 is more than 0.01MPa, stop experiment, inspection system
Air-tightness, it is ensured that open the second stop valve 22 after system air-tightness is good again and carry out subsequent operation.
Above example is only 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 (3)
1. coal body permeability test device under hot cold shock, it is characterised in that：Including hot device for cooling, permeability apparatus, gas flow
Test device and gas supply device；
Hot device for cooling, which includes liquid nitrogen container, hot-air blower, the cold pipe of note and heat injection pipe, hot-air blower, has fan switch；Liquid nitrogen container connects
The cold pipe of note is connect, the one end that cold pipe is connected with liquid nitrogen container is noted and is provided with pressure charging valve and liquid feed valve；Described in hot-air blower connection
Heat injection pipe, heat injection pipe are provided with the first stop valve；
Gas flow testing device includes blast pipe, and blast pipe is provided with the second stop valve and gas flow meter；
Permeability apparatus includes filling in coal sample tank, end cap, the cold pipe of heat, plectane and end cap, and the lower end of the cold pipe of heat is fixed on vertically downward
At the center of plectane, part of the plectane positioned at the cold caliber of heat laterally is evenly arranged with permeable hole penetrating up and down；End cap with
The sealing of coal sample tank top coordinates, and is provided with the support level of annular in coal sample tank in side wall and bottom wall joint, and plectane is erected at branch
It is connected on support step and with the madial wall of coal sample tank；Plectane surrounds permeable chamber, permeable chamber side with coal sample tank bottom wall below
Wall is connected with air water discharge pipe, and the part that air water discharge pipe stretches out permeable chamber has connected up the blast pipe and has been connected with downwards
Drainpipe, drainpipe are provided with the 3rd stop valve；The bottom of plug is provided with up big and down small prismoid section, prismoid section insertion heat in end cap
The cold cold pipe crimping sealing of Guan Bingyu heat；
Heat injection pipe and the cold pipe of note, which are each passed through, to be filled in and stretches into end cap in the cold pipe of heat, heat injection pipe and the cold Guan Junyu end caps Nei Saimi of note
Envelope coordinates；The pipeline section side wall of heat injection pipe and the cold pipe of note in the cold pipe of heat is uniformly provided with radial direction through hole respectively；Erected beyond the Great Wall in end cap
To the communicating pipe being provided with for discharging nitrogen and hot blast, communicating pipe bottom stretch into hot cold pipe and its top is stretched out in end cap upwards
Plug；
Gas supply device includes high pressure gas gas cylinder, is switched at the top of high pressure gas gas cylinder by gas outlet and is connected with airway tube,
Airway tube is provided with pressure-reducing valve and air gauge.
2. coal body permeability test device under hot cold shock according to claim 1, it is characterised in that：The end cap and coal
Sample tank top is coordinated by following sealing structure：
The cylindrical place of end cap is convexly equipped with downwards connection annulus, and connection annulus bottom surface is provided with annular groove, coal sample tank top outer wall radial convex
The connecting plate provided with annular is played, connecting plate is detachably fixed with being connected the underrun bolt of annulus and linked together, connecting plate
Coal sample pot sidewall above is connected in annular groove, and pressure is provided with sealing gasket between the side wall top of coal sample tank and the cell wall of annular groove
Circle；Sealing ring is less than end cap lower surface, and inlet chamber is surrounded between end cap lower surface and coal sample upper end.
3. coal body permeability test device under hot cold shock according to claim 1, it is characterised in that：On the airway tube
Provided with the 4th stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720427889.0U CN206627410U (en) | 2017-04-22 | 2017-04-22 | Coal body permeability test device under hot cold shock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720427889.0U CN206627410U (en) | 2017-04-22 | 2017-04-22 | Coal body permeability test device under hot cold shock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206627410U true CN206627410U (en) | 2017-11-10 |
Family
ID=60205684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720427889.0U Expired - Fee Related CN206627410U (en) | 2017-04-22 | 2017-04-22 | Coal body permeability test device under hot cold shock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206627410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444882A (en) * | 2018-01-17 | 2018-08-24 | 南方电网科学研究院有限责任公司 | A kind of experiment porch for measuring deep-well exhaust efficiency |
-
2017
- 2017-04-22 CN CN201720427889.0U patent/CN206627410U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444882A (en) * | 2018-01-17 | 2018-08-24 | 南方电网科学研究院有限责任公司 | A kind of experiment porch for measuring deep-well exhaust efficiency |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106918542A (en) | Coal body permeability test device and method of testing under hot cold shock | |
| CN106290654B (en) | A kind of coal spontaneous ignition symbolic gas experimental rig and its test method | |
| CN104729948B (en) | Coal containing methane gas aqueous vapor two phase fluid flow experimental system and method | |
| CN104749218A (en) | Device and method for testing explosion properties of flammable gases at ultralow temperature | |
| CN103675242B (en) | Measuring method and the device of a kind of concrete or mortar volume distortion | |
| CN105178953A (en) | Device and method for measuring hydrate reservoir decomposition rate in drilling process | |
| CN206668257U (en) | A kind of experimental provision simulated production water and shaked out on the influence of individual well Wellbore of Gas Wells | |
| CN206627410U (en) | Coal body permeability test device under hot cold shock | |
| CN109030318A (en) | A kind of pressure chamber structure and permeability test macro | |
| CN107831106A (en) | Intelligent permeability survey testing stand | |
| CN110296889A (en) | Pressure chamber and its test method for coarse grain soil large-scale Frozen-thawed cycled triaxial test | |
| CN109406373A (en) | Frozen-thawed cycled acts on lower soil body osmotic coefficient measuring instrument and application method | |
| CN109556900A (en) | The simulation test device and pilot system of Crystallization Plugging in tunneling drain | |
| CN106290798A (en) | A kind of high accuracy swollen testing equipment of salt | |
| CN107703031A (en) | A kind of air pressure driving loose media grouting simulation test device and test method | |
| CN103808543B (en) | Self-heating substance heat reaction testing system | |
| CN206095881U (en) | Test device of spot test concrete rate of permeating water | |
| CN209354111U (en) | Visualize reaction unit and alternating temperature transformation reaction simulation system | |
| CN207036358U (en) | A kind of plastic bottle detection means | |
| CN102279091A (en) | Test device and test method for simulating molten iron flow at furnace bottom of blast-furnace hearth | |
| CN109458164A (en) | Visualize the analogy method of reaction unit and alternating temperature transformation dynamic response | |
| CN109490001A (en) | A kind of detection method for agglomeration for iron mine machine air leakage rate | |
| CN209182210U (en) | Frozen-thawed cycled acts on lower soil body osmotic coefficient measuring instrument | |
| CN205532579U (en) | Experimental device for it forms to be used for monitoring artificial gas cap | |
| CN103775069A (en) | Stratigraphic modeling device and method for suspended state hydrates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171110 |