CN206387450U - Experimental provision for determining radial flow fields gas flow - Google Patents
Experimental provision for determining radial flow fields gas flow Download PDFInfo
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- CN206387450U CN206387450U CN201720011066.XU CN201720011066U CN206387450U CN 206387450 U CN206387450 U CN 206387450U CN 201720011066 U CN201720011066 U CN 201720011066U CN 206387450 U CN206387450 U CN 206387450U
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- China
- Prior art keywords
- coal sample
- gas
- gas flow
- wire netting
- sample tank
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Abstract
The utility model is related to the experimental provision for determining gas flow, specifically a kind of experimental provision for being used to determine radial flow fields gas flow.Including coal sample tank, the coal sample being placed in coal sample tank layer, coal sample tank is cavity cylinder, provided with the cylinder wire netting mould being placed in coal sample layer in coal sample tank, cylinder wire netting mould upper end is connected with the vinyl cover being covered on coal sample layer, vinyl cover is provided with the aperture connected with cylinder wire netting mould inside, coal sample tank cover, which is provided with the through hole connected with cylinder wire netting mould inside and is connected with by gas flow pipe road on gas pot, gas flow pipe road, is respectively equipped with flowmeter, pressure gauge and valve.The utility model realizes Radial Flow of the gas in coal sample, the comprehensive and accuracy of desorption of mash gas law study result is improved, it is significant to desorption of mash gas law study, Mine Gas Gushing, coal and gas prominent, gas pumping and coal-bed gas pressure and assay research.
Description
Technical field
The utility model is related to the experimental provision for determining gas flow, is specifically that one kind is used to determine radial flow fields Gas-Flow
The experimental provision of amount.
Background technology
Mine Gas Gushing, coal and gas prominent, gas pumping and coal-bed gas pressure and assay all with gas solution
Inhale relevant, when the gas pressure skewness in coal seam, certain Gas Flow scope will be often formed in coal seam, this
One scope is commonly known as flow field, in underground coal mine, after coal seam wall exposes, and the high pressure gas in coal seam can be from exposure wall
Gush out, the flow field that the Gas Flow is formed in coal seam and the geometry of exposure wall are closely related, when exposure wall is in
It is plane, then unidirectional flow field is formed, gas flows in one direction；When exposure wall is in cylinder shape, then radial flow fields are formed, watt
This flows from four circumferential center of circle directions；When exposure wall spherical shape, then ball is formed to flow field, gas is from four circumferential centre of sphere streams
It is dynamic.
Under different flow field conditions, even if the occurrence condition in coal seam is identical with exposed area, its gas flow
Difference is there is, this otherness, professor Zhou Shining of China Mining University etc. is theoretically analyzed；Theory analysis institute
The calculation formula drawn is more complicated, and practicality is not very strong.
For the research and development of coal sample desorption of mash gas flooding test device, on disclosed data document, there are many invention devices,
But, they, which are substantially, uses canned coal, is then desorbed at different conditions, determines gas flow, its gas is in coal sample
Interior flowing is all one-way flow, the unidirectional flow field of formation, and the desorption of mash gas, flooding test device about radial flow fields condition are also
No, therefore to the research in other kinds of gas flow field it can not realize, influence the comprehensive of desorption of mash gas law study result
And accuracy.
Therefore, in order to study flowing otherness of the gas under different flow field conditions, it is easy to the people in colliery engineering is applied
To manufacture the gas flow location form for being conducive to gas control and utilizing, exploring one kind can realize that coal sample gas radially flows
Gas flow determination experiment device just seem particularly urgent.
Utility model content
The utility model aims to solve the problem that above mentioned problem, so that providing a kind of can realize the use that coal sample gas radially flows
In the experimental provision for determining radial flow fields gas flow.
The utility model solves described problem, and the technical scheme of use is：
It is a kind of to be used to determining the experimental provision of radial flow fields gas flow, including coal sample tank, be placed in coal sample tank
Coal sample layer, coal sample tank is that the cylinder wire netting mould being placed in coal sample layer is provided with cavity cylinder, coal sample tank,
Cylinder wire netting mould upper end is connected with the vinyl cover being covered on coal sample layer, and vinyl cover is provided with and cylinder wire netting mould
The aperture of the internal connection of tool, coal sample tank cover is provided with the through hole connected with cylinder wire netting mould inside and by gas stream
Thread a pipe and be connected with gas pot, flowmeter, pressure gauge and valve are respectively equipped with gas flow pipe road.
Using the utility model of above-mentioned technical proposal, compared with prior art, the characteristics of it is protruded is：
1. Radial Flow of the gas in coal sample is realized, experiment condition is more met coal production actual conditions,
The comprehensive and accuracy of desorption of mash gas law study result is improved, not only there is important meaning to desorption of mash gas law study
Justice, and also have to Mine Gas Gushing, coal and gas prominent, gas pumping and coal-bed gas pressure and assay research
Significance.
2. can dedicated for determine radial flow fields gas flow, for Gas Flow in terms of scientific research provides test hand
Section, is conducive to Gas Disaster preventing and treating and the exploration using new technology.
Preferably, the utility model further technical scheme is：
Absorbent cotton is provided between vinyl cover outer ring and coal sample tank inwall, it can be ensured that the gas that coal sample is desorbed can only
Gas flow pipe road is flowed to from cylinder wire netting mould.
Coal sample tank inner bottom part is provided with mat.
Cylinder wire netting mould is located at the center in coal sample tank and is vertically arranged with tank bottom.
Cylinder wire netting mould inside is provided with support tube, to ensure that cylinder wire netting mould keeps solid shape, prevents
Only it is deformed.
Valve includes the first valve being located on the connecting line of flowmeter, the gas being located between flowmeter and pressure gauge
The second valve on circulation duct, the 3rd valve on the gas flow pipe road being located between pressure gauge and gas pot.
Also include timer, for observing gas flow not in the same time.
Brief description of the drawings
Fig. 1 is the utility model example structure schematic diagram；
In figure：Coal sample tank 1；Cylinder wire netting mould 2；Support tube 3；Mat 4；Coal sample layer 5；Vinyl cover 6；Degreasing
Cotton 7；Coal sample tank cover 8；Standard screw 9；Gas flow pipe road 10；First valve 11；Flowmeter 12；Second valve 13；Pressure
Table 14；3rd valve 15；Gas pot 16；Timer 17.
Embodiment：
With reference to embodiment, the utility model is described in further detail, and purpose, which is only that, more fully understands the utility model
Content, therefore, the cited case are not intended to limit protection domain of the present utility model.
Referring to Fig. 1, coal sample tank cover 8 is fixedly connected by standard screw 9 with coal sample tank 1, and coal sample tank is sky
Provided with the cylinder wire netting mould 2 being placed in coal sample layer 5, cylinder wire netting mould 2 in chamber cylinder, coal sample tank 1
Center in coal sample tank 1 and it is vertically arranged with tank bottom, coal sample tank cover 8 is transversal with cylinder wire netting mould 2
Face is concentric circles, it can be ensured that it is inside a circular cylinder, cylinder wire netting mould 2 to be positioned over coal sample between the two
Provided with support tube 3, to ensure that cylinder wire netting mould 2 keeps solid shape, prevent it from deforming, cylinder wire netting mould 2
Upper end is connected with the vinyl cover 6 being covered on coal sample layer 5, and vinyl cover 6 is provided with what is connected with the inside of cylinder wire netting mould 2
Ten apertures being evenly arranged, coal sample tank cover 8 is provided with the through hole connected with the inside of cylinder wire netting mould 2 and by gas
Body circulation duct 10, which is connected with gas pot 16, gas flow pipe road 10, is respectively equipped with flowmeter 12, pressure gauge 14, valve, valve
Door includes the first valve 11 being located on the connecting line of flowmeter 12, the gas stream being located between flowmeter 12 and pressure gauge 14
Thread a pipe the second valve 13 on 10, the 3rd valve on the gas flow pipe road 10 that is located between pressure gauge 14 and gas pot 16
15, the system that gas flow pipe road 10, valve, flowmeter 12, pressure gauge 14 and gas pot 16 are constituted both can be watt of coal sample
This absorption provides gases at high pressure, gas pressure during Accurate Determining adsorption equilibrium, again can there is provided survey for the desorption of mash gas of coal sample
Amount means, determine gas flow not in the same time, and absorbent cotton 7 is provided between the outer ring of vinyl cover 6 and the inwall of coal sample tank 1, can
Ensure that the gas that coal sample is desorbed can only be flowed in gas flow pipe road 10, coal sample tank 1 from cylinder wire netting mould 2
Bottom is provided with mat 4, and timer 17 is independent to be placed.
Coal sample tank 1 is cavity cylinder, and external diameter is 200mm, and internal diameter is 180mm, high 300mm, and making material is not
Become rusty steel；The wire netting of cylinder wire netting mould 2 is 40 mesh, diameter 30mm, high 260mm, mesh aperture 1mm；The system of support tube 3
Make material for plastics, diameter 10mm, high 260mm.
The making material of mat 4 is plastics, internal diameter 30mm, external diameter 180mm, thick 20mm；Coal sample is bituminous coal, particle diameter 1-3mm；
Diameter 180mm, the thick 10mm of vinyl cover 6, leave aperture ten, small aperture 2mm.
Coal sample tank cover 8 is a stainless steel lid, is matched with coal sample tank 1；Standard screw 9 carries bolt and spiral shell
It is female；Gas flow pipe road 10 is one group of pipeline, and making material is stainless steel, external diameter 10mm, internal diameter 8mm, long 2m；First valve
11st, the second valve 13, the 3rd valve 15 are RQZ series of security stop valves；Flow is calculated as suspended body flowmeter；The type of pressure gauge 14
Number be YTXC-150-Z；Gas pot 16 is high pressure methane gas bomb；Timer 17 is stopwatch.
After coal seam wall exposes, the high pressure gas in coal seam can be gushed out from exposure wall, and the Gas Flow is in coal seam
The flow field formed and the geometry of exposure wall are closely related, when exposure wall is in cylinder shape, then form radial flow fields, by
In setting cylinder wire netting mould 2 in coal sample layer 5, it is equivalent to be configured to a cylindric exposed wall in coal sample layer 5,
So that it is guaranteed that the gas around it in coal sample layer 5 is gushed out by cylinder wire netting mould 2 to gas flow pipe road 10, radially
Liquid form.
Experimental method：Mat 4, support tube 3 and cylinder wire netting mould 2 are placed in coal sample tank 1 in advance, then
Coal sample is put between coal sample tank 1 and cylinder wire netting mould 2；
Vinyl cover 6 is placed in the top of support tube 3 and cylinder wire netting mould 2, with the He of 7 sealed plastic lid of absorbent cotton 6
Gap between coal sample tank 1；
Coal sample tank cover 8 is screwed on, and it is fixed together with coal sample tank 1 with standard screw 9, connection gas circulation
Pipeline 10 and coal sample tank cover 8；
First valve 11, flowmeter 12, the second valve 13, pressure gauge 14, the 3rd valve 15 and gas pot 16 are joined successively
It is connected on gas flow pipe road 10；
The first valve 11 is closed, gas pot 16, the second valve 13 and the 3rd valve 15 is opened, passes through gas flow pipe road 10
Gases at high pressure are injected into coal sample tank 1, continue half an hour time, closed gas tank 16, the 3rd valve 15；Observe pressure gauge 14
Reading, until the reading is basicly stable（Adsorption equilibrium）Untill；
The first valve 11 is opened, gas flow not in the same time is observed by flowmeter 12 and timer 17；Opening the
The moment of one valve 11, the reading that flowmeter 12 is shown should be the flowing of free gas in the middle of cylinder wire netting mould 2, then
The desorption Gas Flow of coal sample is only, emphasis gathers the latter.
This experimental provision realizes Radial Flow of the gas in coal sample, experiment condition is more met coal production real
Border situation, improves the comprehensive and accuracy of desorption of mash gas law study result, not only has to desorption of mash gas law study
Significance, and Mine Gas Gushing, coal and gas prominent, gas pumping and coal-bed gas pressure and assay are studied
Also it is significant, can dedicated for determine radial flow fields gas flow, for Gas Flow in terms of scientific research provides reality
Means are tested, are conducive to Gas Disaster preventing and treating and the exploration using new technology.
The preferable feasible embodiment of the utility model is the foregoing is only, not thereby limits to power of the present utility model
Sharp scope, the equivalence changes that all utilization the utility model specifications and its accompanying drawing content are made, is both contained in of the present utility model
Within interest field.
Claims (7)
1. it is used to determining the experimental provision of radial flow fields gas flow a kind of, including coal sample tank, the coal that is placed in coal sample tank
Sample layer, it is characterised in that：Coal sample tank is provided with the cylinder iron being placed in coal sample layer in cavity cylinder, coal sample tank
Silk screen mould, cylinder wire netting mould upper end is connected with the vinyl cover being covered on coal sample layer, and vinyl cover is provided with and cylinder
The aperture of body wire netting mould inside connection, coal sample tank cover is provided with the through hole connected with cylinder wire netting mould inside simultaneously
It is connected with by gas flow pipe road on gas pot, gas flow pipe road and is respectively equipped with flowmeter, pressure gauge and valve.
2. the experimental provision according to claim 1 for being used to determine radial flow fields gas flow, it is characterised in that：Vinyl cover
Absorbent cotton is provided between outer ring and coal sample tank inwall.
3. the experimental provision according to claim 1 for being used to determine radial flow fields gas flow, it is characterised in that：Coal sample tank
Tank body inner bottom part is provided with mat.
4. the experimental provision according to claim 1 for being used to determine radial flow fields gas flow, it is characterised in that：Cylinder
Wire netting mould is located at the center in coal sample tank and is vertically arranged with tank bottom.
5. the experimental provision according to claim 1 for being used to determine radial flow fields gas flow, it is characterised in that：Cylinder
Wire netting mould inside is provided with support tube.
6. the experimental provision according to claim 1 for being used to determine radial flow fields gas flow, it is characterised in that：Valve bag
On the gas flow pipe road for include the first valve being located on the connecting line of flowmeter, being located between flowmeter and pressure gauge
The 3rd valve on two valves, the gas flow pipe road being located between pressure gauge and gas pot.
7. the experimental provision according to claim 1 for being used to determine radial flow fields gas flow, it is characterised in that：Also include
Timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011066.XU CN206387450U (en) | 2017-01-05 | 2017-01-05 | Experimental provision for determining radial flow fields gas flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011066.XU CN206387450U (en) | 2017-01-05 | 2017-01-05 | Experimental provision for determining radial flow fields gas flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206387450U true CN206387450U (en) | 2017-08-08 |
Family
ID=59491726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720011066.XU Expired - Fee Related CN206387450U (en) | 2017-01-05 | 2017-01-05 | Experimental provision for determining radial flow fields gas flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206387450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268833A (en) * | 2020-09-27 | 2021-01-26 | 周少玺 | Multifunctional gas parameter testing instrument and using method thereof |
-
2017
- 2017-01-05 CN CN201720011066.XU patent/CN206387450U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268833A (en) * | 2020-09-27 | 2021-01-26 | 周少玺 | Multifunctional gas parameter testing instrument and using method thereof |
| CN112268833B (en) * | 2020-09-27 | 2024-05-07 | 周少玺 | Multifunctional gas parameter testing instrument and application method thereof |
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| 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: 20170808 Termination date: 20180105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |