CN203894222U - Coal and gas outburst dynamic effect simulation experiment device - Google Patents
Coal and gas outburst dynamic effect simulation experiment device Download PDFInfo
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- CN203894222U CN203894222U CN201420312347.5U CN201420312347U CN203894222U CN 203894222 U CN203894222 U CN 203894222U CN 201420312347 U CN201420312347 U CN 201420312347U CN 203894222 U CN203894222 U CN 203894222U
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- 239000003245 coal Substances 0.000 title claims abstract description 70
- 230000000694 effects Effects 0.000 title claims abstract description 39
- 238000004088 simulation Methods 0.000 title abstract description 6
- 239000000428 dust Substances 0.000 claims abstract description 68
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000005453 pelletization Methods 0.000 claims abstract description 16
- 238000004880 explosion Methods 0.000 claims abstract description 14
- 238000013022 venting Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 63
- 238000002474 experimental method Methods 0.000 claims description 46
- 238000009434 installation Methods 0.000 claims description 23
- 239000011148 porous material Substances 0.000 claims description 16
- 230000008719 thickening Effects 0.000 claims description 13
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000012530 fluid Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 238000011160 research Methods 0.000 description 6
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- 238000013467 fragmentation Methods 0.000 description 3
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 2
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Abstract
The utility model discloses a coal and gas outburst dynamic effect simulation experiment device, including driving system, pipe-line system and dust pelletizing system, driving system is including opening the exit device that has container open-ended pressure vessel and connect container opening and pipe-line system, be equipped with in the exit device and be used for sealing and opening the explosion venting mechanism of container opening when pressurized, pipe-line system includes pipeline subassembly and connecting pipe, pipeline subassembly is the multi-branch structure that constitutes by the pipe-line unit through flange joint, the pipe-line unit includes straight tube, first connecting pipe and second connecting pipe, be equipped with observation hole and/or test hole on the pipe-line unit; the dust removal system comprises an upper box body, a middle box body and a lower box body, wherein the upper box body is provided with a purified gas outlet, the lower box body is provided with a pipeline interface and an openable dust removal port, and the middle box body is internally provided with at least two bag dust removal devices; utilize the utility model discloses can know coal and gas outburst disaster-causing mechanism and emergence, development law more clearly, effective control coal and gas outburst calamity.
Description
Technical field
The utility model relates to a kind of mine disaster analogue experiment installation, particularly a kind of device for coal and the simulated experiment of Gas Outburst dynamic effect.
Background technology
Coal and Gas Outburst are one of disasters the most serious in coal in China exploitation.The dynamic effect producing when outstanding generation can be destroyed production system, causes casualties, and easily causes the major accident such as coal dust and gas explosion.Therefore, reduce to greatest extent the destruction of disaster, just must study the calamity mechanism that causes of coal and Gas Outburst, explore effective disaster control method and measure.The overall process of coal and Gas Outburst can be regarded as two different phases, one of them stage is the shattering process of outstanding coal body, its main manifestations feature is that coal body produces destruction and peels off with rib under the acting in conjunction of terrestrial stress, gas pressure and digging activity, the continuous desorb of adsorption gas in coal body, free gas discharges, at the inner coal-gas two-phase flow that forms of outburst hole; Another stage is the process of dishing out after coal body fragmentation, it is the dynamic effect stage, also coal-gas two-phase flow ejection the outburst hole forming on last stage the process that sorting is piled up in tunnel, this stage is not in the situation that considering roof caving, terrestrial stress plays a secondary role, and the promotion of methane gas plays dominating role.
Due to the restriction of complicacy and research method and the means of coal and Gas Outburst, both at home and abroad to after coal and Gas Outburst to cause calamity theoretical research less.Outstanding dynamic disaster laboratory simulation and on-the-spot actual observation all exist the difficulty that cannot overcome.Although carried out at present a large amount of coals and Gas Outburst experiment both at home and abroad, and many breakthrough progress are obtained, but achievement in research concentrates on adsorption-desorption rule mostly, coal body failure law, terrestrial stress effect, the aspects such as moulded coal parameter, a lot of problems are as fluid motion parameter and flow state in coal and Gas Outburst, shock wave forms mechanism and the impact damage to main ventilation equipment, execution, the research that causes the aspects such as calamity condition and early warning protection is fewer, its main cause has: first, due to solid-gas phase the complex nature of the problem, at present still do not have very ripe theoretical result to explain the characteristics of motion of two-phase flow, the second, the outstanding model in existing coal and Gas Outburst laboratory is difficult to reach the requirement of on-the-spot physical condition, and dynamic effect experiment effect is not obvious, the 3rd, the relevant description of outstanding on-the-spot generation power destruction and impact is detailed not, and due to mine safety regulation and safety equipment restriction, outstanding photo site and video data are little, are unfavorable for the research of problem.These reasons cause outstanding cause calamity research aspect and relatively lagging behind above, and people cannot fundamentally set forth outstanding brought harm, and the conclusion that more directly utility theory analysis draws is carried out Guiding Practice.
Therefore, be necessary to develop a kind of experimental provision that is specifically designed to coal and the simulated experiment of Gas Outburst dynamic effect, that understands coal and Gas Outburst with the experiment of chamber by experiment causes calamity and controlled condition, more clearly be familiar with coal and Gas Outburst by dynamic effect experimental study and cause calamity mechanism and generation, the rule of development, effectively control coal and Gas Outburst disaster.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of experimental provision that is specifically designed to coal and the simulated experiment of Gas Outburst dynamic effect, that understands coal and Gas Outburst with the experiment of chamber by experiment causes calamity and controlled condition, more clearly be familiar with coal and Gas Outburst by dynamic effect experimental study and cause calamity mechanism and generation, the rule of development, effectively control coal and Gas Outburst disaster.
Coal of the present utility model and Gas Outburst dynamic effect analogue experiment installation, comprise the power system connecting successively, piping system and dust pelletizing system, described power system comprises the pressure vessel for filling simulated experiment material, described pressure vessel is fixed on ground and has vessel port, described pressure vessel is provided with container air-filled pore and coal feed point to be opened/closed, described power system also comprises the outlet device that connects described vessel port and described piping system, in described outlet device, be provided with the venting of dust explosion mechanism that opens described vessel port when sealing with pressurized, described venting of dust explosion mechanism comprises at least one rupture disk, described piping system comprises conduit assembly and the connecting pipe that is connected described power system and described conduit assembly entrance, described conduit assembly is the multiple-branching construction being connected to form by flange by piping unit, described piping unit comprise form single branch straight tube, connect first connecting pipe and the second connecting pipe that is connected three branches of Liang Ge branch, described piping unit is provided with observation port and/or instrument connection, described observation port is installed the observation assembly for observing fine coal stacking states, and described instrument connection is installed the test suite for fixing sensing device, described dust pelletizing system comprises the upper box body, middle part casing and the lower part box that connect successively from top to bottom, described upper box body has pure qi (oxygen) outlet, described lower part box is provided with pipe joint and the ash removing hole to be opened/closed for being connected with described piping system, is provided with at least two bag-type dust collectors and for driving the vibrative vibrating device of described bag-type dust collector in the casing of described middle part.
Further, the quantity of described rupture disk is two, and the position of described outlet device between two described rupture disks forms insulated chamber and be provided with the insulated chamber air-filled pore that is communicated with described insulated chamber.
Further, described outlet device comprises that thickening is taken over and reducing is taken over, one end that described thickening is taken over is connected with described vessel port, the other end is connected by the first flange with the extra heavy pipe portion that described reducing is taken over, the thin tube part that described reducing is taken over is connected by the second flange with described connecting pipe, two described rupture disks are clamped in respectively between the ring flange of described the first flange and the ring flange of the second flange, and described insulated chamber air-filled pore is arranged on described reducing and takes over.
Further, described pressure vessel is the horizontal pressure vessel that bottom is provided with saddle support, also comprise the base that is fixed on ground and is fixedly connected with described saddle support by foot bolt, described base comprises upper mounting plate and lower platform, is provided with the adjusting screw(rod) for regulating relative distance between two platforms between described upper mounting plate and lower platform.
Further, described connecting pipe comprises manages the sub-pipe being connected with described thin tube part and the mother who is connected with described conduit assembly entrance, described sub-pipe is inserted in described female pipe and can be along the axially-movable of described female pipe, described female pipe front end is provided with pilot hole, keeper positions described sub-pipe through described pilot hole, and described son pipe rear end is provided with the O-ring seal mounting groove for O-ring seal is installed.
Further, described piping unit also comprises tilt adjustment pipe, and the two ends of described tilt adjustment pipe connect respectively described straight tube and for adjustable pipe road inclination or position angle; Described the first connecting pipe is right-angle bend, and described the second connecting pipe is three-way pipe.
Further, described piping unit is rectangular tube, and described instrument connection is located at the end face of described piping unit, and described observation port is located at side adjacent with end face on described piping unit; The edge surrounding of described observation port is processed an I of portalling, and described observation assembly comprises and port lid I and the sealing of described hole seat I adaptation are fixed on the visual glass between described hole seat I and port lid I; The edge surrounding processing of a described instrument connection II of portalling, described test suite comprises with the port lid II of described hole seat II adaptation and is fixed in described port lid II and stretches into the sensor in described piping unit.
Further, coal of the present utility model and Gas Outburst dynamic effect analogue experiment installation also comprise the sectional shelf-unit for supporting described conduit assembly, described sectional shelf-unit comprises the underframe being formed by ∏ shape steel beam splicing and is connected to level altitude support and the movable height bracket on described underframe, the height change that the adjacent described straight tube with differing heights of described movable height bracket support causes due to change of pitch angle to adapt to described straight tube.
Further, described bag-type dust collector comprises the fixed mount of cylinder type and is set in the filter bag on described fixed mount, described vibrating device comprises the oscillating plate of upper shed place that is arranged on described middle part casing and is fixed on the Vib. on described oscillating plate, and the opening part on described bag-type dust collector top is fixed on described oscillating plate.
Further, the position that is positioned at described bag-type dust mechanism below in the casing of described middle part is provided with the distinguished and admirable uniform device for dusty gas evenly being imported to described bag-type dust mechanism.
The beneficial effects of the utility model: coal of the present utility model and Gas Outburst dynamic effect analogue experiment installation have adopted the modular design including power system, piping system and dust pelletizing system, allomeric function is complete, the function of modules coordinates with requirement of experiment, can form the experiment condition of different piping networks, then by adjusting coal conservation, gas flow method to realize the experimental simulation of different materials and kinetic parameter; Particularly, add coal body particle from coal feed point to pressure vessel, be filled with methane gas from container air-filled pore, complete the gas absorption process of coal body particle by inflating pressure mode, in the time that pressure reaches the blow-up point of venting of dust explosion mechanism, vessel port moment opens, now pressure vessel is communicated with experiment tunnel, and coal body fragmentation is also dished out, and dynamic effect simulated experiment is started; Independent assortment is carried out in increase and decrease or adjustment by straight tube, the first connecting pipe, the second connecting pipe, can simulate the mine laneway network easily with multiple-branching construction; The observation assembly and the test suite that on piping unit, arrange, can naked-eye observation fine coal accumulation form, and apparatus measures two-phase flow speed, tunnel gaseous tension, fine coal piling height, the parameters such as coal petrography move distance; Dynamic effect is tested the dust producing and is realized dedusting by bag-type dust collector, efficiency of dust collection is high, avoid secondary pollution, in dust removal process, bag-type dust collector swings with vibrating device, thereby make dust be difficult for adhering to and result in blockage, be conducive to improve efficiency of dust collection and dust pelletizing system utilization experiment impact air-flow and overcome self resistance as power, without additionally setting up propulsion system; Utilize the utility model can more clearly be familiar with coal and Gas Outburst and cause calamity mechanism and generation, the rule of development, effectively control coal and Gas Outburst disaster.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is vertical view of the present utility model;
Fig. 2 is front view of the present utility model;
Fig. 3 is the structural representation of power system of the present utility model;
Fig. 4 is the principle of dynamics sketch of power system of the present utility model;
Fig. 5 is A place enlarged drawing in Fig. 1;
Fig. 6 is the structural representation of tilt adjustment pipe of the present utility model;
Fig. 7 is B place enlarged drawing in Fig. 1;
Fig. 8 is C place enlarged drawing in Fig. 2;
Fig. 9 is the structural representation of dust pelletizing system of the present utility model;
Figure 10 is the left view of Fig. 9;
Figure 11 is the vertical view of Fig. 9.
Embodiment
Fig. 1 is vertical view of the present utility model, Fig. 2 is front view of the present utility model, Fig. 3 is the structural representation of power system of the present utility model, Fig. 9 is the structural representation of dust pelletizing system of the present utility model, as shown in the figure: coal of the present utility model and Gas Outburst dynamic effect analogue experiment installation, comprise the power system connecting successively, piping system and dust pelletizing system, described power system comprises the pressure vessel 101 for filling simulated experiment material, described pressure vessel 101 is fixed on ground and has vessel port 111, described pressure vessel 101 is provided with container air-filled pore 112 and coal feed point to be opened/closed 113, described power system also comprises the outlet device that connects described vessel port 111 and described piping system, in described outlet device, be provided with the venting of dust explosion mechanism that opens described vessel port 111 when sealing with pressurized, described venting of dust explosion mechanism comprises at least one rupture disk 102, described piping system comprises conduit assembly and the connecting pipe 202 that is connected described power system and described conduit assembly entrance, described conduit assembly is the multiple-branching construction being connected to form by flange by piping unit, described piping unit comprise form single branch straight tube 211, connect first connecting pipe 212 and the second connecting pipe 212 that is connected three branches of Liang Ge branch, described piping unit is provided with observation port and/or instrument connection, described observation port is installed the observation assembly for observing fine coal stacking states, and described instrument connection is installed the test suite for fixing sensing device, described dust pelletizing system comprises the upper box body 301, middle part casing 302 and the lower part box 303 that connect successively from top to bottom, described upper box body 301 has pure qi (oxygen) outlet and (is positioned at a side of upper box body 301, not shown), described lower part box 303 is provided with pipe joint 311 and the ash removing hole to be opened/closed 312 for being connected with described piping system, is provided with at least two bag-type dust collectors and for driving the vibrative vibrating device of described bag-type dust collector in described middle part casing 302, pressure vessel 101 is for carrying the Sealing Arrangement of internal high pressure, simulated experiment material comprises media particle and methane gas, wherein container air-filled pore 112 can be connected with gas cylinder, for being filled with methane gas, coal feed point 113 is located at pressure vessel 101 tops, is opened and closed by valve, piping system is the pipeline of simulation mine laneway network, vessel port 111 is opened in pressure vessel 101 bottoms, is communicated with, and is sealed by venting of dust explosion mechanism, to realize the integral sealing of pressure vessel 101 by the outlet device being mainly made up of pipeline with piping system, venting of dust explosion mechanism can explosion, relieving pressure under the temperature and pressure of regulation, add coal body particle from coal feed point 113 to pressure vessel 101, be filled with methane gas from container air-filled pore 112, complete the gas absorption process of coal body particle by inflating pressure mode, in the time that pressure reaches the blow-up point of venting of dust explosion mechanism, 111 moments of vessel port open, now pressure vessel 101 is communicated with experiment tunnel, coal body fragmentation is also dished out, and dynamic effect simulated experiment is started, venting of dust explosion mechanism can adopt the rupture disk 102 of existing any structure, is not repeated herein its structure, adopt rupture disk 102 have simple in structure, installation and maintenance convenient, the advantage such as cheap, and it is corrosion-resistant, sealing property is reliable, ensures that pressure vessel 101 tests the sealing property before starting in dynamic effect, the quantity of rupture disk 102 is decided according to the actual requirements, in the time adopting a rupture disk 102, rupture disk 102 can be arranged on to any position of outlet device, as need the gas absorption process of coal body particle, and first in pressure vessel 101, be filled with the gas that is less than and approaches rupture disk 102 burst pressures, now rupture disk 102 can not break, when experiment need be opened vessel port 111, then to the interior inflation of pressure vessel 101, make the interior gaseous tension of pressure vessel 101 exceed rupture disk 102 burst pressures, rupture disk 102 fragmentations, thereby the moment of realizing vessel port 111 open, the entrance of piping system, outlet are all taking fluid motion direction as standard, and one end that fluid enters is entrance, conduit assembly has at least three branches, the straight shape pipeline that each branch is made up of continuously straight tube 211, the bend pipe that the first connecting pipe 212 is both ends open, the second 212 of connecting pipes are for having the pipeline of three openings, independent assortment is carried out in increase and decrease or adjustment by straight tube 211, the first connecting pipe 212, the second connecting pipe 212, can simulate the mine laneway network easily with multiple-branching construction, the observation assembly and the test suite that on piping unit, arrange, can naked-eye observation fine coal accumulation form, and apparatus measures two-phase flow speed, tunnel gaseous tension, fine coal piling height, the parameters such as coal petrography move distance, the main working parts that middle part casing 302 is dust pelletizing system, its inner hollow forms dirt pocket, the upper shed of middle part casing 302 is docked with upper box body 301, upper shed docks with lower part box 303, and upper box body 301 is for giving vent to anger, and 303 of lower part box are for air inlet and deashing, pipe joint 311 is connected with piping system flange, the valve-type structure of ash removing hole 312 for sealing and open, bag-type dust collector is suspended on dirt pocket, and the bag type filtering element that utilizes fiber fabric to make traps solid particulate matter in dusty gas, dynamic effect is tested the dust producing and is realized dedusting by bag-type dust collector, and efficiency of dust collection is high, avoid secondary pollution, in dust removal process, bag-type dust collector swings with vibrating device, thereby makes dust be difficult for adhering to and result in blockage, and is conducive to improve efficiency of dust collection, and dust pelletizing system utilization experiment impact air-flow overcomes self resistance as power, without additionally setting up propulsion system.
In the present embodiment, the quantity of described rupture disk 102 is two, and the position that described outlet device is positioned between two described rupture disks 102 (comprising near the rupture disk A1021 of piping system and the rupture disk B1022 of close pressure vessel 101) forms insulated chamber 103 and is provided with the insulated chamber air-filled pore 131 that is communicated with described insulated chamber 103; Insulated chamber 103 is two confined spaces that rupture disk 102 forms in outlet device, and insulated chamber air-filled pore 131 is all consistent with container air-filled pore 112 structures and function; Use two rupture disks 102 to use a rupture disk 102 to there is more outstanding technique effect than only simultaneously, while using a rupture disk 102, the breakage of rupture disk 102 need to be inflated whole pressure vessel 101, inflation object volume is large, outlet opening time is long, and the broken time of rupture disk 102 is wayward; And use when two rupture disks 102, can change the pressure that rupture disk 102 bears by insulated chamber 103 being filled, exit, export opening time short, be easy to accurately control vessel port 111 opening times; Specifically, as shown in Figure 4, according to requirement of experiment, as need the gas absorption process of coal body particle, first in pressure vessel 101, be filled with the gas that is less than and approaches rupture disk B1022 burst pressure, now rupture disk B1022 can not break; After adsorption process completes, before experiment starts, first insulated chamber air-filled pore 131 and container air-filled pore 112 are replaced to intermittently inflation, make the experimental pressure in pressure vessel 101 reach default experimental pressure P
0, and ensure that rupture disk A1021, rupture disk B1022 all can not break, now pressure vessel gaseous tension P
0> insulated chamber gaseous tension P
1> piping system gaseous tension Pm, and P
0the burst pressure > P of-Pm > rupture disk B
0-P
1, and the burst pressure > P of rupture disk A
1-Pm; When experiment starts, inflation increase or venting reduce the gaseous tension in insulated chamber 103, and rupture disk B1022 and rupture disk A1021 are successively broken, open thereby realize the moment exporting; While adopting plenum mode to open outlet, rupture disk A1021 is first broken; And adopting venting pressure reducing mode to open while outlet, rupture disk B1022 is first broken.
In the present embodiment, described outlet device comprises thickening adapter 104 and reducing adapter 105, one end of described thickening adapter 104 is connected with described vessel port 111, the other end is connected by the first flange 161 with the extra heavy pipe portion of described reducing adapter 105, the thin tube part of described reducing adapter 105 is connected by the second flange 162 with described connecting pipe 202, two described rupture disks 102 are clamped in respectively between the ring flange of described the first flange 161 and the ring flange of the second flange 162, and described insulated chamber air-filled pore 131 is arranged on described reducing and takes on 105; Strong impacting with high pressure while opening for adapting to vessel port 111, vessel port 111 connects the thickening that specific pressure container 101 outer wall thickness are larger and takes over 104, and thickening adapter 104 also can be one-body molded with pressure vessel 101 certainly, to improve stable connection degree; Reducing takes over 105 can be connected with the piping system of different size thickening adapter 104, increases the controllable variable of simulated experiment; The diameter of the thickening adapter 104 of the present embodiment is that 0.3m, length are 0.1m, and the extra heavy pipe portion diameter of reducing adapter 105 is 0.3m, and the diameter of thin tube part can be adjusted into according to experiment demand the different sizes such as 0.3m, 0.2m, 0.1m; The first flange 161, the second flange 162 are all identical with existing flange arrangement, can be at the default ring flange of the corresponding connecting portion of thickening adapter 104, reducing adapter 105 and piping system import, be connected and sealed by bolt again, 102 corresponding being clamped between ring flange of rupture disk.
In the present embodiment, described pressure vessel 101 is provided with the horizontal pressure vessel of saddle support 114 for bottom, also comprise the base that is fixed on ground and is fixedly connected with described saddle support 114 by foot bolt, described base comprises upper mounting plate 171 and lower platform 172, is provided with the adjusting screw(rod) 173 for regulating relative distance between two platforms between described upper mounting plate 171 and lower platform 172; Pressure vessel 101 is fixed on ground by base, to prevent that pressure vessel 101 from moving under Percussion counter-force effect; Base is made up of at least two-layer relatively independent steel plate layer, and wherein the steel plate layer of the bottom is fixed on ground, between each steel plate layer, can contact connection, also can not contact connection; The relative distance of steel plate interlayer is adjustable, is conducive to keep the levelness of pressure vessel 101, and can adjust the relative height of pressure vessel 101, is convenient to being connected of pressure vessel 101 and outlet device; Adjusting screw(rod) 173 penetrates lower platform 172 through upper mounting plate 171 part, and the screw thread of two sections of contrary rotation directions can be set on shaft, realizes the adjusting of two podium levels when spiral; Pressure vessel 101, thickening adapter 104 and reducing are taken on 105 and are equipped with the gauge hole A108 for sensor installation; Gauge hole A108 is for sensors such as setting pressure sensor, temperature sensors, to monitor and to obtain the physicochemical data in experimentation; The axis of gauge hole A108 is all perpendicular with the axis of establishing pressure vessel 101, thickening adapter 104 and reducing adapter 105, is convenient to offer and can improve the accuracy of obtaining data.
In the present embodiment, described connecting pipe 202 comprises the sub-pipe 221 being connected with described thin tube part and the mother who is connected with described conduit assembly entrance manages 222, described son pipe 221 is inserted in described female pipe 222 and can be along the axially-movable of described female pipe 222, described female pipe 222 front ends are provided with pilot hole 222a, keeper positions described son pipe 221 through described pilot hole 222a, and described son pipe 221 rear ends are provided with the O-ring seal mounting groove for O-ring seal is installed; Connecting pipe 202 two ends are tightly connected with power system, conduit assembly respectively, and it is telescopic type structure, and the entire length of connecting pipe 202 can be finely tuned, and maximum adjustment length is 0.1m, so that the disassembling, assembling and replacing of junction; Keeper can adopt fastening bolt, and son pipe 221 is provided with the hole 221a of at least three connections corresponding to pilot hole 222a; Front end, rear end are all taking fluid motion direction as standard, and fluid first one end of process is front end.
In the present embodiment, described piping unit also comprises tilt adjustment pipe 203, and the two ends of described tilt adjustment pipe 203 connect respectively described straight tube 211 and for adjustable pipe road inclination or position angle; Angle α between tilt adjustment pipe 203 both ends of the surface is 10 °-20 °; Described the first connecting pipe 212 is right-angle bend, and described the second connecting pipe 212 is three-way pipe; As shown in Figure 6, tilt adjustment pipe 203 makes piping system have change of pitch angle, forms the pipeline configuration more similar to actual mine laneway network, and fluid motion and actual burst effect are approached, and experimentation more can reflect actual conditions, and experimental result is more accurate; Right-angle bend, three-way pipe are all easily manufactured, and are conducive to reduce production costs.
In the present embodiment, described piping unit is rectangular tube, and described instrument connection is located at the end face of described piping unit, and described observation port is located at side adjacent with end face on described piping unit; The edge surrounding of described observation port is processed the I 241 of portalling, and described observation assembly comprises and port lid I 251 and the sealing of described hole seat I 241 adaptations are fixed on the visual glass 252 between described hole seat I 241 and port lid I 251; The edge surrounding processing of the described instrument connection II 261 of portalling, described test suite comprises with the port lid II 271 of described hole seat II 261 adaptations and is fixed in described port lid II 271 and stretches into the sensor 273 in described piping unit; Square pipe is more similar to actual mine laneway network, further makes fluid motion and actual burst effect approach, and experimentation more can reflect actual conditions, and experimental result is more accurate; End face is the upper surface of piping unit while placing, and instrument connection is arranged on end face, strengthens the induction accuracy of sensing device, and staff can also carry out cleaning to pipeline from instrument connection, is located at end face and is convenient to clean; Observation port is arranged on side, is convenient to situation in pipeline to carry out Real Time Observation; Hole seat I 241 has with port lid I 251 flange plate structure being connected, and is convenient to be connected and sealed; Visual glass 252 forms transparent window, and can carry experimental pressure, to observe simulation coal mine roadway gas blasting phenomena; Visual glass 252 is preferably tempering Pyrex, the resistance to elevated temperatures of tempering Pyrex is stable, can be in for a long time under 450 DEG C of hot environments and work, moment, heatproof was up to 650 DEG C, after half tempered is processed, can significantly improve the thermal shock resistance of glass, the physical strength that improves glass, thermal expansivity is low, and transparency is high, water-fast, alkaline-resisting, acid resistance is good, high strength, high rigidity, has superpower antiknock ability; Hole seat II 261 has with port lid II 271 flange plate structure being connected, and is convenient to be connected and sealed; Sensor 273, for detection of the chemical factors such as temperature, pressure in experimentation, improves experimental result data; In each port lid II 271, arrange altogether three along the equally spaced installation of sensors hole 274 for sensor installation 273 of fluid motion direction; The quantity of sensor 273 can be set according to experiment demand, in the time of sensor installation 273 not, and installation of sensors hole 274 use bolt seal.
In the present embodiment, coal of the present utility model and Gas Outburst dynamic effect analogue experiment installation also comprise the sectional shelf-unit for supporting described conduit assembly, described sectional shelf-unit comprises the underframe 281 being formed by ∏ shape steel beam splicing and is connected to level altitude support 282 and the movable height bracket (not shown) on described underframe 281, the height change that the adjacent described straight tube 211 with differing heights of described movable height bracket support causes due to change of pitch angle to adapt to described straight tube 211; Underframe 281 is mainly made up of ∏ shape steel, crossbeam and joint bolt, for keeping the smooth of conduit assembly entirety; For the ease of transport and dismounting, underframe 281 is divided into several sections that length does not wait, is connected into an entirety to lay on the ground by joint bolt, and its overall laying form is identical with conduit assembly; Level altitude support 282 is made up of two foot supports, four foot supports and five foot supports, and wherein two foot supports are mainly used in the piping unit of supporting with observation assembly, to prevent support top steel pipe shielding window; Five foot supports are used for supporting the first connecting pipe 212, to improve pipeline steadiness; Other conduit assemblies adopt four foot supports to support; There is lower margin flange in each support foot, for height bracket 282 and the underframe 281 of being connected and fixed; Movable height bracket supports tilt adjustment pipe 203 and changes the straight tube 211 of height through tilt adjustment pipe 203.
In the present embodiment, described bag-type dust collector comprises the fixed mount 341 of cylinder type and is set in the filter bag 342 on described fixed mount 341, described vibrating device comprises the oscillating plate 351 of upper shed place that is arranged on described middle part casing 302 and is fixed on the Vib. 352 on described oscillating plate 351, and the opening part on described bag-type dust collector top is fixed on described oscillating plate 351; Fixed mount 341, for supporting filter bag 342, prevents that filter bag 342 from subsiding, and contributes to removing and the redistribution of dirt cake simultaneously; When dusty gas process bag-type dust collector, dust is trapped in the outside surface of filter bag 342, and clean gas enters filter bag 342 inside by filtrate; Between the upper cover plate of oscillating plate 351 and middle part casing 302, be provided with flexible member as spring, make oscillating plate 351 can form resonance; Vib. 352 is one to be positioned at the polarization mechanism of oscillating plate 351 central authorities, it can be driven by external power source, also can, by forming initial polarization because filter pressure differs between each bag-type dust collector, subsequently because inertia constantly vibrates, vibrate thereby promote oscillating plate 351; Middle part casing 302 is cylinder, reduces gas flow resistance, along the inner chamber of middle part casing 302, six bag-type dust collectors is circumferentially evenly set; It is cylindric that dirt pocket is also; The center of circle of each fixed mount 341 is on a circle taking dirt pocket center as the center of circle, to ensure the balance of middle part casing 302; Pure qi (oxygen) outlet is connected with ventilating duct 381, and ventilating duct 381 is supported by the support bar 382 fixing on the ground; Ventilating duct 381 guides to clean gas in the region that is applicable to discharge, avoid Experimental Area to pollute, and because dynamic experiment need to use biogas, guiding discharge can prevent from causing intoxication accident; Between the middle part outside surface of casing 302 and the upper surface of lower part box 303, be connected with reinforcement 391, can strengthen the stable degree that middle part casing 302 is connected with lower part box 303, reduce the vibrations of middle part casing 302 outer walls; The upper surface of lower part box 303 is for the hanger 392 of Lifting Convey; Hanger 392 arranges four altogether, is evenly arranged in the upper surface of lower part box 303, the balance while ensureing transport; Between the middle part outside surface of casing 302 and the upper surface of lower part box 303, be connected with the cat ladder 393 for climbing, be convenient to this dust pelletizing system to overhaul, install; Lower part box 303 and support bar 382 all fix on the ground by foot bolt, prevent that dust pelletizing system from moving under Percussion counter-force effect.
In the present embodiment, the position that is positioned at described bag-type dust mechanism below in described middle part casing 302 is provided with the distinguished and admirable uniform device 306 for dusty gas evenly being imported to described bag-type dust mechanism; As shown in Figure 9, distinguished and admirable uniform device 306 is uprush demarcation strip; When entering lower part box 303, dusty gas will form high-speed eddy, can form strong souring to filter bag 342, setting up 306 of distinguished and admirable uniform devices can reduce the air-flow velocity of dusty gas and air-flow is evenly distributed, improve the efficiency of dust collection of this dust pelletizing system, the serviceable life of also improving filter bag 342 simultaneously.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (10)
1. a coal and Gas Outburst dynamic effect analogue experiment installation, comprise the power system connecting successively, piping system and dust pelletizing system, it is characterized in that: described power system comprises the pressure vessel for filling simulated experiment material, described pressure vessel is fixed on ground and has vessel port, described pressure vessel is provided with container air-filled pore and coal feed point to be opened/closed, described power system also comprises the outlet device that connects described vessel port and described piping system, in described outlet device, be provided with the venting of dust explosion mechanism that opens described vessel port when sealing with pressurized, described venting of dust explosion mechanism comprises at least one rupture disk, described piping system comprises conduit assembly and the connecting pipe that is connected described power system and described conduit assembly entrance, described conduit assembly is the multiple-branching construction being connected to form by flange by piping unit, described piping unit comprise form single branch straight tube, connect first connecting pipe and the second connecting pipe that is connected three branches of Liang Ge branch, described piping unit is provided with observation port and/or instrument connection, described observation port is installed the observation assembly for observing fine coal stacking states, and described instrument connection is installed the test suite for fixing sensing device, described dust pelletizing system comprises the upper box body, middle part casing and the lower part box that connect successively from top to bottom, described upper box body has pure qi (oxygen) outlet, described lower part box is provided with pipe joint and the ash removing hole to be opened/closed for being connected with described piping system, is provided with at least two bag-type dust collectors and for driving the vibrative vibrating device of described bag-type dust collector in the casing of described middle part.
2. coal according to claim 1 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: the quantity of described rupture disk is two, the position of described outlet device between two described rupture disks forms insulated chamber and is provided with the insulated chamber air-filled pore that is communicated with described insulated chamber.
3. coal according to claim 2 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: described outlet device comprises that thickening is taken over and reducing is taken over, one end that described thickening is taken over is connected with described vessel port, the other end is connected by the first flange with the extra heavy pipe portion that described reducing is taken over, the thin tube part that described reducing is taken over is connected by the second flange with described connecting pipe, two described rupture disks are clamped in respectively between the ring flange of described the first flange and the ring flange of the second flange, described insulated chamber air-filled pore is arranged on described reducing and takes over.
4. coal according to claim 3 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: described pressure vessel is the horizontal pressure vessel that bottom is provided with saddle support, also comprise the base that is fixed on ground and is fixedly connected with described saddle support by foot bolt, described base comprises upper mounting plate and lower platform, is provided with the adjusting screw(rod) for regulating relative distance between two platforms between described upper mounting plate and lower platform.
5. coal according to claim 4 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: described connecting pipe comprises manages the sub-pipe being connected with described thin tube part and the mother who is connected with described conduit assembly entrance, described sub-pipe is inserted in described female pipe and can be along the axially-movable of described female pipe, described female pipe front end is provided with pilot hole, keeper positions described sub-pipe through described pilot hole, and described son pipe rear end is provided with the O-ring seal mounting groove for O-ring seal is installed.
6. coal according to claim 5 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: described piping unit also comprises tilt adjustment pipe, the two ends of described tilt adjustment pipe connect respectively described straight tube and for adjustable pipe road inclination or position angle; Described the first connecting pipe is right-angle bend, and described the second connecting pipe is three-way pipe.
7. coal according to claim 6 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: described piping unit is rectangular tube, described instrument connection is located at the end face of described piping unit, and described observation port is located at side adjacent with end face on described piping unit; The edge surrounding of described observation port is processed an I of portalling, and described observation assembly comprises and port lid I and the sealing of described hole seat I adaptation are fixed on the visual glass between described hole seat I and port lid I; The edge surrounding processing of a described instrument connection II of portalling, described test suite comprises with the port lid II of described hole seat II adaptation and is fixed in described port lid II and stretches into the sensor in described piping unit.
8. coal according to claim 7 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: also comprise the sectional shelf-unit for supporting described conduit assembly, described sectional shelf-unit comprises the underframe being formed by ∏ shape steel beam splicing and is connected to level altitude support and the movable height bracket on described underframe, the height change that the adjacent described straight tube with differing heights of described movable height bracket support causes due to change of pitch angle to adapt to described straight tube.
9. coal according to claim 8 and Gas Outburst dynamic effect analogue experiment installation, it is characterized in that: described bag-type dust collector comprises the fixed mount of cylinder type and is set in the filter bag on described fixed mount, described vibrating device comprises the oscillating plate of upper shed place that is arranged on described middle part casing and is fixed on the Vib. on described oscillating plate, and the opening part on described bag-type dust collector top is fixed on described oscillating plate.
10. coal according to claim 9 and Gas Outburst dynamic effect analogue experiment installation, is characterized in that: the position that is positioned at described bag-type dust mechanism below in the casing of described middle part is provided with the distinguished and admirable uniform device for dusty gas evenly being imported to described bag-type dust mechanism.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312347.5U CN203894222U (en) | 2014-06-12 | 2014-06-12 | Coal and gas outburst dynamic effect simulation experiment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420312347.5U CN203894222U (en) | 2014-06-12 | 2014-06-12 | Coal and gas outburst dynamic effect simulation experiment device |
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| CN203894222U true CN203894222U (en) | 2014-10-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995092A (en) * | 2014-06-12 | 2014-08-20 | 中煤科工集团重庆研究院有限公司 | Coal and gas outburst dynamic effect simulation experiment device |
| CN110308246A (en) * | 2019-07-02 | 2019-10-08 | 中国矿业大学 | The projecting coal bed water filling extinction technology of one kind and extinction validity check method |
| CN112415171A (en) * | 2020-11-06 | 2021-02-26 | 中煤科工集团重庆研究院有限公司 | Test device for simulating coal and gas outburst impact disaster-causing effect |
-
2014
- 2014-06-12 CN CN201420312347.5U patent/CN203894222U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995092A (en) * | 2014-06-12 | 2014-08-20 | 中煤科工集团重庆研究院有限公司 | Coal and gas outburst dynamic effect simulation experiment device |
| CN103995092B (en) * | 2014-06-12 | 2015-09-23 | 中煤科工集团重庆研究院有限公司 | Coal and gas outburst dynamic effect simulation experiment device |
| CN110308246A (en) * | 2019-07-02 | 2019-10-08 | 中国矿业大学 | The projecting coal bed water filling extinction technology of one kind and extinction validity check method |
| CN112415171A (en) * | 2020-11-06 | 2021-02-26 | 中煤科工集团重庆研究院有限公司 | Test device for simulating coal and gas outburst impact disaster-causing effect |
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