CN206469916U - For determining ball to the experimental provision of flow field gas flow - Google Patents
For determining ball to the experimental provision of flow field gas flow Download PDFInfo
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- CN206469916U CN206469916U CN201720011787.0U CN201720011787U CN206469916U CN 206469916 U CN206469916 U CN 206469916U CN 201720011787 U CN201720011787 U CN 201720011787U CN 206469916 U CN206469916 U CN 206469916U
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- coal sample
- gas flow
- gas
- 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 to be used to determine ball to the experimental provision of flow field gas flow.Including coal sample tank, the coal sample being placed in coal sample tank layer, coal sample tank is cavity hemisphere, provided with the hemispherical wire netting mould being placed in the coal sample of upper strata in coal sample tank, hemispherical wire netting mould openings end outer cover is equipped with the vinyl cover being covered in coal sample, coal sample tank cover, which is provided with the through hole connected with hemispherical 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 ball of the gas in coal sample to flowing, 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 ball to flow field 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, forms unidirectional flow field, and about ball to the desorption of mash gas of flow field condition, flooding test device 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 that is conducive to gas control and utilizes, exploring one kind can realize coal sample gas in ball to flowing
Gas flow determination experiment device just seem particularly urgent.
Utility model content
The utility model aims to solve the problem that above mentioned problem, thus provide it is a kind of can realize coal sample gas be in use of the ball to flowing
In measure experimental provision of the ball to flow field gas flow.
The utility model solves described problem, and the technical scheme of use is：
It is a kind of to be used to determine ball to the experimental provision of flow field gas flow, including coal sample tank, be placed in coal sample tank
Coal sample, coal sample tank is that the hemispherical wire netting mould being placed in the coal sample of upper strata is provided with cavity hemisphere, coal sample tank,
Hemispherical wire netting mould openings end outer cover is equipped with the vinyl cover being covered in coal sample, and coal sample tank cover is provided with and hemispherical
The through hole of wire netting mould inside connection is simultaneously connected with gas pot by gas flow pipe road, and gas flow pipe is respectively equipped with road
Flowmeter, pressure gauge and valve.
Using the utility model of above-mentioned technical proposal, compared with prior art, the characteristics of it is protruded is：
1. ball of the gas in coal sample is realized to flowing, 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 determining ball to flow field gas flow, for Gas Flow in terms of scientific research provides and tests 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 hemispherical wire netting mould.
Coal sample tank inner bottom part is provided with mat.
Hemispherical wire netting mould is located at the center in coal sample tank.
Hemispherical wire netting mould inside has plastic support by tape-stripping, to ensure that hemispherical wire netting mould is protected
Solid shape is held, prevents it from deforming.
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.
Coal sample tank bottom is provided with bracket, for supporting coal sample tank overall, keeps the stability during its experiment.
Brief description of the drawings
Fig. 1 is the utility model example structure schematic diagram；
Fig. 2 is the structural representation that the utility model embodiment hemispherical wire netting mould is connected with plastic support；
In figure：Coal sample tank 1；Hemispherical wire netting mould 2；Mat 3；Coal sample 4；Vinyl cover 5；Absorbent cotton 6；Coal sample tank
Cover 7；Standard screw 8；Gas flow pipe road 9；First valve 10；Flowmeter 11；Second valve 12；Pressure gauge 13；3rd valve
Door 14；Gas pot 15；Timer 16；Plastic support 17；Bracket 18.
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, Fig. 2, coal sample tank cover 7 is fixedly connected by standard screw 8 with coal sample tank 1, coal sample tank 1
For cavity hemisphere, the bottom of coal sample tank 1 is provided with bracket 18, and bracket 18 is used to support coal sample tank overall, keeps it to test
Provided with the hemispherical wire netting mould 2 being placed in upper strata coal sample 4, hemispherical wire netting in stability in journey, coal sample tank 1
The openend outer cover of mould 2 is equipped with the vinyl cover 5 being covered in coal sample 4, and hemispherical wire netting mould 2 is located at coal sample tank 1
Interior center, and both same centre ofs sphere, it can be ensured that it is a hemisphere, hemispherical wire netting mould to be positioned over coal sample between the two
There is plastic support 17 by tape-stripping inside tool 2, to ensure that hemispherical wire netting mould 2 keeps solid shape, prevent it
Deformation, coal sample tank cover 7 is provided with the through hole connected with the inside of hemispherical wire netting mould 2 and connected by gas flow pipe road 9
It is connected on gas pot 15, gas flow pipe road 9 and is respectively equipped with flowmeter 11, pressure gauge 13, valve, valve includes being located at flowmeter
The first valve 10 on 11 connecting line, second on the gas flow pipe road 9 being located between flowmeter 11 and pressure gauge 13
The 3rd valve 14 on valve 12, the gas flow pipe road 9 being located between pressure gauge 13 and gas pot 15, gas flow pipe road 9,
The system that valve, flowmeter 11, pressure gauge 13 and gas pot 15 are constituted, both can provide high pressure gas for the gas adsorption of coal sample 4
Body, gas pressure during Accurate Determining adsorption equilibrium, again can for coal sample 4 desorption of mash gas there is provided measurement means, determine different
The gas flow at moment, is provided with absorbent cotton 6, it can be ensured that coal sample 4 is desorbed between the outer ring of vinyl cover 5 and the inwall of coal sample tank 1
The gas come can only flow to gas flow pipe road 9 from hemispherical wire netting mould 2, and the inner bottom part of coal sample tank 1 is provided with mat 3,
Timer 16 is independent to be placed.
Coal sample tank 1 is cavity hemisphere, and making material is stainless steel；The wire netting of hemispherical wire netting mould 2 is
40 mesh, to prevent ickings from entering, the making material of mat 3 is plastics, and coal sample 4 is bituminous coal, particle diameter 1-3mm, and coal sample tank cover 7 is
One stainless steel lid, matches with coal sample tank 1, and standard screw 8 carries screw bolt and nut, and gas flow pipe road 9 is one
Group pipeline, making material is stainless steel, and the first valve 10, the second valve 12, the 3rd valve 14 are the cut-out of RQZ series of security
Valve, flowmeter 11 is suspended body flowmeter, and the model YTXC-150-Z of pressure gauge 13, gas pot 15 is high pressure methane gas bomb,
Timer 16 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 geometry of the flow field formed and exposure wall is closely related, when exposure wall spherical shape, then forms ball to flow field, by
In setting hemispherical wire netting mould 2 in coal sample layer, it is equivalent to be configured to a dome shape exposure wall in coal sample layer, from
And ensure that the gas in the layer of coal sample around it is gushed out by hemispherical wire netting mould 2 to gas flow pipe road 9, in ball to flowing
Form.
Experimental method：Mat 3 is placed in coal sample tank 1 in advance, coal sample 4 is put into coal sample tank 1, then will
Hemispherical wire netting mould 2 is placed in upper strata coal sample 4, while the modeling that will be sleeved on outside the openend of hemispherical wire netting mould 2
Material lid 5 is covered on coal sample layer；
With the gap between the sealed plastic lid 5 of absorbent cotton 6 and coal sample tank 1；
Coal sample tank cover 7 is screwed on, and it is fixed together with coal sample tank 1 with standard screw 8, connection gas circulation
Pipeline 9 and coal sample tank cover 7；
First valve 10, flowmeter 11, the second valve 12, pressure gauge 13, the 3rd valve 14 and gas pot 15 are joined successively
It is connected on gas flow pipe road 9；
The first valve 10 is closed, gas pot 15, the second valve 12 and the 3rd valve 14 is opened, passes through gas flow pipe road 9
Gases at high pressure are injected into coal sample tank 1, continue half an hour time, closed gas tank 15, the 3rd valve 14；Observe pressure gauge 13
Reading, until the reading is basicly stable（Adsorption equilibrium）Untill；
The first valve 10 is opened, gas flow not in the same time is observed by flowmeter 11 and timer 16；Opening the
The moment of one valve 10, the reading that flowmeter 11 is shown should be the flowing of free gas in the middle of hemispherical wire netting mould 2, then
The desorption Gas Flow of coal sample 4 is only, emphasis gathers the latter.
This experimental provision realizes ball of the gas in coal sample 417 to flowing, experiment condition is more met colliery life
Actual conditions are produced, the comprehensive and accuracy of desorption of mash gas law study result are improved, not only to desorption of mash gas law study
It is significant, and to Mine Gas Gushing, coal and gas prominent, gas pumping and coal-bed gas pressure and assay
Research is also significant, can be that the scientific research in terms of Gas Flow is carried dedicated for determining ball to flow field gas flow
For laboratory facilities, be 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 (8)
1. a kind of be used to determine ball to the experimental provision of flow field gas flow, 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 hemispherical being placed in the coal sample of upper strata in cavity hemisphere, coal sample tank
Wire netting mould, hemispherical wire netting mould openings end outer cover is equipped with the vinyl cover being covered in coal sample, coal sample tank cover
Provided with the through hole connected with hemispherical wire netting mould inside and gas pot, gas flow pipe are connected with by gas flow pipe road
It is respectively equipped with road in flowmeter, pressure gauge and valve, coal sample layer and hemispherical wire netting mould is set, is equivalent in coal sample layer
In be configured to dome shape exposure wall, so that it is guaranteed that the gas around it in coal sample layer by hemispherical wire netting mould to
Gas flow pipe road gushes out, in ball to liquid form.
2. according to claim 1 be used to determine ball to the experimental provision of flow field gas flow, it is characterised in that：Vinyl cover
Absorbent cotton is provided between outer ring and coal sample tank inwall.
3. according to claim 1 be used to determine ball to the experimental provision of flow field gas flow, it is characterised in that：Coal sample tank
Tank body inner bottom part is provided with mat.
4. according to claim 1 be used to determine ball to the experimental provision of flow field gas flow, it is characterised in that：Hemispherical
Wire netting mould is located at the center in coal sample tank.
5. according to claim 1 be used to determine ball to the experimental provision of flow field gas flow, it is characterised in that：Hemispherical
Wire netting mould inside has plastic support by tape-stripping.
6. according to claim 1 be used to determine ball to the experimental provision of flow field 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. according to claim 1 be used to determine ball to the experimental provision of flow field gas flow, it is characterised in that：Also include
Timer.
8. according to claim 1 be used to determine ball to the experimental provision of flow field gas flow, it is characterised in that：Coal sample tank
Tank base is provided with bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011787.0U CN206469916U (en) | 2017-01-05 | 2017-01-05 | For determining ball to the experimental provision of flow field gas flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011787.0U CN206469916U (en) | 2017-01-05 | 2017-01-05 | For determining ball to the experimental provision of flow field gas flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206469916U true CN206469916U (en) | 2017-09-05 |
Family
ID=59705042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720011787.0U Expired - Fee Related CN206469916U (en) | 2017-01-05 | 2017-01-05 | For determining ball to the experimental provision of flow field gas flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206469916U (en) |
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2017
- 2017-01-05 CN CN201720011787.0U patent/CN206469916U/en not_active Expired - Fee Related
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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: 20170905 Termination date: 20190105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |