CN203443762U - Goaf gas flow field simulation test bench - Google Patents
Goaf gas flow field simulation test bench Download PDFInfo
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- CN203443762U CN203443762U CN201320562314.1U CN201320562314U CN203443762U CN 203443762 U CN203443762 U CN 203443762U CN 201320562314 U CN201320562314 U CN 201320562314U CN 203443762 U CN203443762 U CN 203443762U
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Abstract
A goaf gas flow field simulation test bench is composed of a smoke generator, a smoke generation pipe with a valve, a cooler, a smoke supply pipe, a visualized goaf simulation platform, a differential pressure compensator, a fan and a smoke return pipe, wherein a smoke outlet of the smoke generator is connected with one end of the smoke generation pipe, the other end of the smoke generation pipe extends to the inside of the cooler from an inlet of the cooler, an outlet of the cooler is connected with an inlet end of the smoke supply pipe, an outlet end of the smoke supply pipe is connected to a smoke inlet hole of the visualized goaf simulation platform, the differential pressure compensator is connected to a horizontal section of the smoke supply pipe through a pitot tube connected to an air inlet and an air outlet of the differential pressure compensator and is close to the outlet end of the smoke supply pipe, a smoke outlet hole of the visualized goaf simulation platform is equipped with the fan and is connected with one end of the smoke return pipe, and the other end of the smoke return pipe is connected with a smoke return port of the smoke generator. The goaf gas flow field simulation test bench has the advantage that the test bench is convenient to operate and operators can perform a visualized analog simulation experiment on a goaf gas flow field without entering a goaf to carry out detection.
Description
Technical field
The utility model relates to a kind of simulator stand, and particularly a kind of goaf gas flow field simulation testing table, is applicable to simulate the Gas-Flow field concentration gradient rule of coal mine gob.
Background technology
At present, the especially big gas explosion accident in colliery mainly occurs in the goaf in colliery, and gas density is the key factor that gas explosion occurs in goaf.In addition, because coal mine gob gas explosion accident has sudden, uncertainly, the safety in production of China's coal-mine and miner's life in serious threat.Therefore, to the research of Gas Concentration Distribution Rules in Goaf, be the key of prevention and control coal mine gas from explosion; But, in the process of pushing ahead due to getting working face, have top board across falling, people can not enter into goaf and survey, because gas is colorless and odorless, people can not observe by naked eyes, therefore the technology of traditional research goaf gas Flow Field Distribution rule is inconvenient to implement simultaneously.Be more than the deficiencies in the prior art.
Utility model content
The purpose of this utility model is: design a kind of simple in structurely, easy to operate, test findings is visual, be convenient to the goaf gas flow field simulation testing table of observation, in order to overcome the deficiencies in the prior art.
The purpose of this utility model can realize by following technical proposals:
This goaf gas flow field simulation testing table, it is characterized in that: by smoke generator, be with the valvular pipeline of being fuming, refrigeratory, for smoke pipeline, visual goaf simulation table, differential compensation instrument, blower fan and smoke-returning pipeline form, the smoke outlet of smoke generator connects one end of the pipeline of being fuming, the other end of pipeline of being fuming is extend in refrigeratory by the import of refrigeratory, the outlet of refrigeratory connects the entrance point for smoke pipeline, for the endpiece of smoke pipeline, be connected to the smoke intaking hole place of visual goaf simulation table, differential compensation instrument is by being connected to the pitot tube at its air intake opening and place, gas outlet, be connected to on the horizontal segment of smoke pipeline, and near the endpiece place for smoke pipeline, the venthole place of visual goaf simulation table is provided with blower fan, and one end that connects smoke-returning pipeline, the other end of smoke-returning pipeline is connected with the mouth that returns of smoke generator.
Visual goaf described in the utility model simulation table is by base, the casing that surrounding can be leaked out and transparency glass plate form, casing is set on base, before the left surface of casing, rear end positions is respectively equipped with venthole and smoke intaking hole, box house is followed successively by from left to right simulation and treats mine coal district, simulation tunnel district and the simulation top board spoil district that subsides, simulation treats that mine coal district is equipped with coal seam model, before simulation tunnel district, rear two-port is connected with venthole and the smoke intaking hole of casing left surface respectively, spoil model is equipped with in the simulation top board spoil district that subsides, transparency glass plate covers the upper port place at casing, on transparency glass plate, be provided with coordinate setting graticule line.
Smoke generator of the present utility model comprises the cylindrical shell of sealing, cylindrical shell top is provided with handle, its underpart sidewall is provided with puts the fuel air admission hole of holding concurrently, inside at cylindrical shell, be positioned at and put the hold concurrently top position of air admission hole of fuel, be provided with placement fuel rack, on the top and lower sides of cylindrical shell, be respectively equipped with smoke outlet and return mouth.
Casing described in the utility model is connected and composed by 4 side compressive plates and 1 bottom surface compressive plate, and wherein, the clearance fit that is connected between 4 side compressive plates connects.
Casing described in the utility model is connected and composed by 4 side compressive plates and 1 bottom surface compressive plate, on 4 side compressive plates, is provided with some apertures.
In the simulation table of visual goaf described in the utility model, simulation treats that the coal seam model of mine coal district dress built and formed by dump, and the subside spoil model of spoil district dress of simulation top board is piled up and formed by erose spoil.
The utility model has the advantages that: 1) simple in structure, easy to operate; 2) adopt the coloured smoke of smoke generator generation as tracer gas, under the effect of blower fan, by pipeline, enter visual goaf simulation table, after 5 minutes, just can form flow field visual, that there is the concentration gradient regularity of distribution; Operating personnel need not enter into goaf and survey, just can carry out according to the principle of similitude analog simulation experiment in goaf gas flow field, the flow field visual, that have the concentration gradient regularity of distribution forming in the simulation table of visual goaf is studied, calculated, thereby provide data reference for the prevention and control of coal mine gob gas explosion accident.
Accompanying drawing explanation
Fig. 1 is main TV structure partial schematic sectional view of the present utility model;
Fig. 2 is plan structure partial schematic sectional view of the present utility model;
Fig. 3 is the perspective view of visual goaf simulation table;
Fig. 4 is the main TV structure schematic diagram of smoke generator.
Embodiment
As Figure 1-4, this goaf gas flow field simulation testing table, it is characterized in that: by smoke generator 1, the pipeline 3 of being fuming with valve 2, refrigeratory 5, for smoke pipeline 4, visual goaf simulation table 7, differential compensation instrument 6, blower fan 8 and smoke-returning pipeline 9 form, the smoke outlet of smoke generator 1 connects one end of the pipeline 3 of being fuming, the other end of pipeline 3 of being fuming is extend in refrigeratory 5 by the import of refrigeratory 5, the outlet of refrigeratory 5 connects the entrance point for smoke pipeline 4, for the endpiece of smoke pipeline 4, be connected to smoke intaking hole 16 places of visual goaf simulation table 7, differential compensation instrument 6 is by being connected to the pitot tube at its air intake opening and place, gas outlet, be connected to on the horizontal segment of smoke pipeline 4, and near the endpiece place for smoke pipeline 4, venthole 17 places of visual goaf simulation table 7 are provided with blower fan 8, and one end that connects smoke-returning pipeline 9, the other end of smoke-returning pipeline 9 is connected with the mouth that returns of smoke generator 1.Described visual goaf simulation table 7 is by base 13, the casing 14 that surrounding can be leaked out and transparency glass plate 15 form, casing 14 is set on base 13, before the left surface of casing 14, rear end positions is respectively equipped with venthole 17 and smoke intaking hole 16, casing 14 inside are followed successively by from left to right simulation and treat mine coal district 10, simulation tunnel district 11 and the simulation top board spoil district 12 that subsides, simulation treats that mine coal district 10 is equipped with coal seam model, before simulation tunnel district 11, rear two-port is connected with venthole 17 and the smoke intaking hole 16 of casing 14 left surfaces respectively, spoil model is equipped with in the simulation top board spoil district 12 that subsides, transparency glass plate 15 covers the upper port place at casing 14, on transparency glass plate 15, be provided with coordinate setting graticule line 18.Smoke generator 1 comprises the cylindrical shell 19 of sealing, cylindrical shell 19 tops are provided with handle 20, its underpart sidewall is provided with puts the fuel air admission hole 21 of holding concurrently, inside at cylindrical shell 19, be positioned at and put the hold concurrently top position of air admission hole 21 of fuel, be provided with and place fuel rack 22, on the top and lower sides of cylindrical shell 19, be respectively equipped with smoke outlet and return mouth.
As shown in Figure 2,3, the casing 14 of described visual goaf simulation table 7 is connected and composed by 4 side compressive plates and 1 bottom surface compressive plate, and wherein, the clearance fit that is connected between 4 side compressive plates connects, the state that can leak out to simulate goaf surrounding; Or also can on 4 side compressive plates, some apertures be set, the state that can leak out to simulate goaf surrounding.In described visual goaf simulation table 7, simulation treats that 10Zhuan coal seam, mine coal district model built and to be formed by dump, and the subside spoil model of spoil district 12 dresses of simulation top board is piled up and formed by erose spoil.
The principle of work of this goaf gas flow field simulation testing table is: first, open blower fan 8 operation 5 minutes, make the interior generation negative pressure of visual goaf simulation table 7, then, by burning red charcoal 50g, put into smoke generator 1, again at the thin sawdust of charcoal upper cover 150g, keep the airtight of smoke generator 1, open valve 2, the coloured smoke that smoke generator 1 produces enters refrigeratory 5 by the pipeline 3 of being fuming, after refrigeratory 5 is cooling, enter visual goaf simulation table 7, coloured smoke is before entering visual goaf simulation table 7, by differential compensation instrument 6, its smog velocity is measured to (by energy conservation formula, converting pressure reduction to wind speed), smoke generator 1 was fuming after 5 minutes, can see through transparency glass plate 15, in visual goaf simulation table 7, observe the movement locus of coloured smoke plume, the movement locus process of observation coloured smoke plume, can adopt marking pen on the coordinate setting graticule line 18 of visual goaf simulation table 7 transparency glass plates 15, the coordinate position of mark coloured smoke plume movement locus, by video recorder style of shooting, record the movement locus of coloured smoke plume simultaneously, two kinds of modes are confirmed mutually, observe, study the concentration gradient regularity of distribution and the migration rule of coloured smoke plume in visual goaf simulation table 7, finally, the data that draw according to above simulation test, the multiple that expands similar proportion is inferred the gas density distributed areas in true goaf, for the blast of prevention and control goaf gas provides data reference.Therefore, this goaf gas flow field simulation testing table makes the research of the goaf gas regularity of distribution easy, intuitively visual.
Claims (6)
1. a goaf gas flow field simulation testing table, it is characterized in that: by smoke generator (1), the pipeline of being fuming (3) with valve (2), refrigeratory (5), for smoke pipeline (4), visual goaf simulation table (7), differential compensation instrument (6), blower fan (8) and smoke-returning pipeline (9) form, the smoke outlet of smoke generator (1) connects one end of pipeline (3) that are fuming, the other end of pipeline (3) of being fuming is extend in refrigeratory (5) by the import of refrigeratory (5), the outlet of refrigeratory (5) connects the entrance point for smoke pipeline (4), the endpiece of confession smoke pipeline (4) is connected to the smoke intaking hole (16) of visual goaf simulation table (7) and locates, differential compensation instrument (6) is by being connected to the pitot tube at its air intake opening and place, gas outlet, be connected on the horizontal segment for smoke pipeline (4), and near the endpiece place for smoke pipeline (4), the venthole (17) of visual goaf simulation table (7) locates to be provided with blower fan (8), and one end that connects smoke-returning pipeline (9), the other end of smoke-returning pipeline (9) is connected with the mouth that returns of smoke generator (1).
2. goaf gas flow field simulation testing table according to claim 1, it is characterized in that: described visual goaf simulation table (7) is by base (13), the casing that surrounding can be leaked out (14) and transparency glass plate (15) form, casing (14) is set on base (13), before the left surface of casing (14), rear end positions is respectively equipped with venthole (17) and smoke intaking hole (16), casing (14) inside is followed successively by from left to right simulation and treats mine coal district (10), simulation tunnel district (11) and simulate the top board spoil district (12) that subsides, simulation treats that mine coal district (10) is equipped with coal seam model, before simulation tunnel district (11), rear two-port is connected with venthole (17) and the smoke intaking hole (16) of casing (14) left surface respectively, spoil model is equipped with in the simulation top board spoil district (12) that subsides, transparency glass plate (15) covers the upper port place at casing (14), on transparency glass plate (15), be provided with coordinate setting graticule line (18).
3. goaf gas flow field simulation testing table according to claim 1 and 2, it is characterized in that: smoke generator (1) comprises the cylindrical shell (19) of sealing, cylindrical shell (19) top is provided with handle (20), its underpart sidewall is provided with puts the fuel air admission hole (21) of holding concurrently, inside in cylindrical shell (19), is positioned at and puts the hold concurrently top position of air admission hole (21) of fuel, is provided with and places fuel rack (22), on the top and lower sides of cylindrical shell (19), be respectively equipped with smoke outlet and return mouth.
4. goaf gas flow field simulation testing table according to claim 2, is characterized in that: described casing (14) is connected and composed by 4 side compressive plates and 1 bottom surface compressive plate, and wherein, the clearance fit that is connected between 4 side compressive plates connects.
5. goaf gas flow field simulation testing table according to claim 2, is characterized in that: described casing (14) is connected and composed by 4 side compressive plates and 1 bottom surface compressive plate, on 4 side compressive plates, is provided with some apertures.
6. goaf gas flow field simulation testing table according to claim 2, it is characterized in that: in described visual goaf simulation table (7), simulation treats that the coal seam model of mine coal district (10) dress built and formed by dump, and the subside spoil model of spoil district (12) dress of simulation top board is piled up and formed by erose spoil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562314.1U CN203443762U (en) | 2013-09-11 | 2013-09-11 | Goaf gas flow field simulation test bench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320562314.1U CN203443762U (en) | 2013-09-11 | 2013-09-11 | Goaf gas flow field simulation test bench |
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| CN203443762U true CN203443762U (en) | 2014-02-19 |
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| CN201320562314.1U Expired - Fee Related CN203443762U (en) | 2013-09-11 | 2013-09-11 | Goaf gas flow field simulation test bench |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775122A (en) * | 2014-02-25 | 2014-05-07 | 中国矿业大学(北京) | Simulation experiment device of gas extraction and coal spontaneous combustion of spontaneous combustion-prone and high gas concentration coal seam goaf |
| CN104990831A (en) * | 2015-06-01 | 2015-10-21 | 中国矿业大学 | Experimental platform simulating goaf air leakage and plugging |
| CN110261056A (en) * | 2019-06-26 | 2019-09-20 | 郑州轻工业学院 | A kind of fully-mechanized mining working fire smoke migration emulation test system and its working method |
| US10809417B2 (en) | 2018-09-18 | 2020-10-20 | Taiyuan University Of Technology | Three-dimensional analog simulation test system for gas-liquid countercurrent in abandoned mine goaf |
-
2013
- 2013-09-11 CN CN201320562314.1U patent/CN203443762U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775122A (en) * | 2014-02-25 | 2014-05-07 | 中国矿业大学(北京) | Simulation experiment device of gas extraction and coal spontaneous combustion of spontaneous combustion-prone and high gas concentration coal seam goaf |
| CN103775122B (en) * | 2014-02-25 | 2015-12-09 | 中国矿业大学(北京) | Easy spontaneous combustion high gas layer goaf gas extraction and spontaneous combustionof coal analogue experiment installation |
| CN104990831A (en) * | 2015-06-01 | 2015-10-21 | 中国矿业大学 | Experimental platform simulating goaf air leakage and plugging |
| US10809417B2 (en) | 2018-09-18 | 2020-10-20 | Taiyuan University Of Technology | Three-dimensional analog simulation test system for gas-liquid countercurrent in abandoned mine goaf |
| CN110261056A (en) * | 2019-06-26 | 2019-09-20 | 郑州轻工业学院 | A kind of fully-mechanized mining working fire smoke migration emulation test system and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20140911 |
|
| EXPY | Termination of patent right or utility model |