CN203337648U - Combustible gas explosion simulation experiment set and explosion suppression device thereof - Google Patents
Combustible gas explosion simulation experiment set and explosion suppression device thereof Download PDFInfo
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- CN203337648U CN203337648U CN2013200109880U CN201320010988U CN203337648U CN 203337648 U CN203337648 U CN 203337648U CN 2013200109880 U CN2013200109880 U CN 2013200109880U CN 201320010988 U CN201320010988 U CN 201320010988U CN 203337648 U CN203337648 U CN 203337648U
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- explosion
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- 238000004880 explosion Methods 0.000 title claims abstract description 68
- 230000001629 suppression Effects 0.000 title claims abstract description 14
- 238000004088 simulation Methods 0.000 title abstract 2
- 238000002474 experimental method Methods 0.000 claims abstract description 21
- 230000000977 initiatory effect Effects 0.000 claims abstract description 7
- 238000011160 research Methods 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- 229920005372 Plexiglas® Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000005474 detonation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 52
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000009826 distribution Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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Abstract
The utility model relates to a combustible gas explosion simulation experiment set and an explosion suppression device thereof, which are used for researching explosion propagation and explosion blockage and suppression of a combustible gas and researching fire. The explosion suppression device comprises a multi-pipe section explosion cavity, an air change-pressure relief safety valve, a transparent organic glass window, a porous medium placing region, an air distributing system, an initiation system, a schlieren optical system and a data acquiring system. A premixed gas with certain concentration is prepared by the air distributing system, and is replaced to an explosion cavity, the initiation system is started for detonation, and data is acquired by measurement instruments such as a sensor. The explosion suppression device is clear in assembly thought, and more excellent in pressure relief effect; and an explosion suppression researching method is added for designing an independent explosion suppression part, a pipeline of the optimized air distributing system ensures that the air distributing system is more convenient to operate, the air impermeability is greatly enhanced, different explosion experiments can be developed, and the limitation that a traditional experiment device only carries out a single experiment is broken through.
Description
Technical field
The utility model relates to a kind of device of studying flammable gas explosion and suppressing the flammable gas explosion propagation.Be particularly related to detonation propagation and the datonation-inhibition experimental study science of explosion arrestment thereof of inflammable gas, and the fire test science.
Background technology
Flammable explosive gas is the common medium in coal, oil, chemical industry, storage process etc.Itself and combination with oxygen, reach certain concentration range, runs into incendiary source combustion explosion can occur, and safety in production is caused to serious destruction.As Gas Explosion Accidents in Coal Mines, natural pipeline explosion accident, family gas explosion accident etc.The current accident still constantly occurred also illustrates that some great Scientific Research Problem of flammable gas explosion and inhibition thereof still fundamentally is not resolved, and remains the great theory and technology problem of urgently studying and solving at some to a certain extent.The utility model is based on flammable gas explosion and suppresses research and the device of design.
At present experimental provision major defect or the limitation of flammable gas explosion and the research of inhibition aspect thereof are had: (1) experiment explosion chamber is the transparent materials wall on four sides or entirely, or offers little watch window for indivedual positions, does not utilize and carries out many group contrast experiments.(2) the gas distributing system circuit of experimental provision is wordy, and operation is comparatively complicated, has weakened to a certain extent the impermeability of whole device, is unfavorable for experiment safety.(3) for the porosint put area of datonation-inhibition research at pipeline wall etc., though explosion-resistant effect is arranged, do not conform to the actual conditions.(4) experiment explosion chamber blowdown valve used is common blowdown valve on the market, or the double-layer structure formula blowdown valve on traditional explosive container, can not guarantee the accuracy of this experiment fully, security.
The utility model content
In order to overcome the shortcoming of experimental provision in prior art, the utility model discloses a kind of device of studying flammable gas explosion and suppressing the flammable gas explosion propagation.It is characterized in that: comprise multitube section explosion chamber, for " pressure release of taking a breath " safety valve of this explosion chamber design, take the high-strength transparence emissive plastic glazing of observing for the ease of experimental image specially, the porous medium put area, gas distributing system, initiation system, schlieren optical system, data acquisition system (DAS); Configure certain density premixed gas by gas distributing system, displacement is in explosion chamber, and starting ignition, utilize the sensor surveying instrument, by the data collecting instrument image data.
Further, the blast cavity, with reference to accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, is characterized in that, the design of multitube section, and quantity can increase and decrease voluntarily, and wherein pipeline section shown in accompanying drawing 3 is the changeable pipeline section.
Further, on the blast cavity, 1～13,42～54 be the surveying instrument interfaces such as sensor, thermopair.It is characterized in that, reserved measurement interface is equidistantly, and the increase and decrease of pipeline section can not affect the equally spaced characteristic of whole measurement interfaces; Measurement interface is choice for use voluntarily.
Further, " ventilation-pressure release " safety valve that the blowdown valve adopted on explosion chamber is autonomous Design, with reference to accompanying drawing 5, is characterized in that, in position, 39 place the pressure release film, and the intermediate valve 38 of then screwing on, to compress the pressure release film.When being taken a breath so that being full of the inflammable gas of desired concn in explosion chamber, the top valve 40 of screwing on, with prevent air pressure excessive be the pressure release film rupture.After substitution gas, take off top valve 40, now internal and external equilibrium, can guarantee that the pressure release film does not suffer damage.
Further, one of explosion chamber group of relative wall adopts high definition transparent plexiglass plate material.It is characterized in that, the bilateral wall is fully transparent, is convenient to carry out moving images and takes observation point, or carry out many group contrast experiments.
Further, for the porosint put area of datonation-inhibition research, adopt independently porous area part.Be primarily characterized in that, adopt independent a, outside dimension to equate but the internal diameter hollow flange less than internal diameter of the pipeline with pipe flange, middle placing porous medium, then be connected in this part in the middle of pipeline with bolt, with reference to accompanying drawing 7.This part is easy to dismounting, installs, and can guarantee that porosint can not occur that horizontal level moves because being subject to blast impulse in pipeline, thereby guarantees the reliability of experimental result.
Further, can configure voluntarily the inflammable gas of desired concn in gas distributing system.It is characterized in that, for the premixed gas that obtains mixing, be greater than or less than the objective condition of atmospheric density according to the principal ingredient density in inflammable gas, adopt many import designs, the air intake opening of inflammable gas is arranged to the top of mixed gas cylinder, air inlet is arranged at the below of mixed gas cylinder, with reference to accompanying drawing 1.
Useful result of the present utility model is:
1, the all-transparent of explosion chamber wall design, the position that is conducive to the experimentation imaging is selected, or carries out many group contrast experiments.
2, the three-decker formula of autonomous Design " ventilation-pressure release " safety valve, the pressure release effect is more good.
3, datonation-inhibition partial design independently, increased a kind of method of datonation-inhibition research.
4, optimized the pipeline of gas distributing system, made the gas distributing system circuit more clear, operated more easyly, impermeability strengthens greatly.
5, the experimental provision each several part is carried out to modularization, the assembling clear thinking.In addition, each module of flexible configuration as required.For example, remove the porous medium zone for datonation-inhibition research, can only carry out the microexamination of flammable gas explosion propagation; Working pressure sensor testing system, Research on Automatic Measuring System of Temperature, schlieren system, also can be used alone wherein a kind of simultaneously.
6, extensibility is strong, in this experimental provision, can increase, deletes or change indivedual unit, carries out different explosion tests, has overcome a limitation that experimental provision can only carry out single experiment in the past.For example, can increase or reduce the experiment pipeline section; If need the datonation-inhibition research of research inert gas to inflammable gas, only need to increase the quantity of distribution bottle; Increase indivedual unit, carry out detonation propagation and the datonation-inhibition research thereof of dust.
The accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention
Fig. 2 is explosion chamber figure (band blowdown valve section)
Fig. 3 is explosion chamber figure (middle changeable section)
Fig. 4 is explosion chamber figure (inlet section)
Fig. 5 is " ventilation-pressure release " safety valve figure
Fig. 6 is poly (methyl methacrylate) plate assembling schematic diagram
Fig. 7 is the datonation-inhibition areal map of porous medium
Wherein 1～13,42～54th, the measuring system spare interface, comprise pressure transducer, temperature sensor, thermopair.
14 air intake opening 15-data collecting instrument 16-computing machines
17-initiator 18-spark plug 19-vacuum pump
20-mixes the flammable gas cylinder of gas cylinder 21-air bottle 22-
23～27-valve, 28～29-tensimeter 30-" ventilation-pressure release " valve
31～33-explosion chamber 34-flange 35-porous medium district
The 36-seal groove 37-interface 38-intermediate valve that detonates
Valve 41-bottom, 39-pressure release film rest area 40-top valve
Embodiment
With embodiment, the utility model is elaborated with reference to the accompanying drawings.
The simulated experiment of this flammable gas explosion and explosion suppression device thereof comprise: multitube section explosion chamber, " ventilation-pressure release " safety valve designed for this explosion chamber specially, take high-strength transparence emissive plastic glazing, the gas distributing system of observing for the ease of experimental image, independently porous medium put area, initiation system, schlieren system, data acquisition system (DAS) etc.
Multitube section explosion chamber is with reference to accompanying drawing 2, accompanying drawing 3, accompanying drawing 4.Wherein pipeline section shown in accompanying drawing 3 is the changeable pipeline section, and spare interface on this pipeline section can guarantee that whole measurement interfaces are equidistant, can not change because of the increase and decrease of pipeline section.For example, need to extend experimental channel, only need extra this pipeline section that increases to get final product.
The assembling of full wall transparent organic glass, with reference to accompanying drawing 6.Pmma material can be selected common plexiglass, and this organic glass has that fabulous light transmission, physical strength are higher, corrosion-resistant, dimensionally stable, certain heat-resisting low temperature resistance is arranged, easily remove attachment.
Tensimeter 29 requires minimum range to be-0.1MPa, and maximum range is selected according to actual requirement.Tensimeter 28 requires as the high precision vacuum meter.Gas distributing system comprises the operation valve arranged in a plurality of gas cylinders, each gas channels corresponding with gas cylinder.Here a bit, gas cylinder quantity can increase as requested, reduces or change in explanation, to meet the requirement of experiment to gas componant.
Experimental provision detonates and just with initiator, connects spark plug and detonated, and can realize that a burning things which may cause a fire disaster effectively lights a fire.
The data acquisition system (DAS) of installing in experimental provision, comprise pressure transducer, temperature sensor, and the ion thermopair, schlieren system, data collecting instruments etc., can be selected according to the requirements such as range of test image data.
The utility model has numerous embodiments, and below take gas explosion and datonation-inhibition experiment thereof is example, and two kinds of embodiments are described:
The first embodiment: (1) determines the concentration of the methane gas that needs research, calculates the value of required air pressure and methane gas pressure according to the pressure matching method.(2), according to required experimental considerations unit, with reference to accompanying drawing 1, assemble experimental system.And, under " pressure release of taking a breath " safety valve, place the pressure release film, tighten intermediate valve 38 and top valve 40.(3) carry out distribution: 1. because methane density is less than atmospheric density, all gas cylinders 22 should be methane gas, and gas cylinder 21 is air.According to the pressure of methane value of calculating, open valve 23, slowly input methane gas to mixed gas cylinder, while reaching predetermined value, valve-off 23.2. open valve 24, to mixed gas cylinder input air, while reaching predetermined value, valve-off 24.Standing half an hour, gas to be mixed mixes.3. valve 23, valve 24, valve 26 keep closed condition, open valve 25, valve 27.Start vacuum pump mixed gas cylinder is vacuumized to (being operated according to the vacuum pump operation explanation).After completing, valve-off 25, valve 27.4. open valve 25, valve 27, make the gas slowly in mixed gas cylinder flow into explosion chamber, until tensimeter 2 displayed values are while being atmospheric value, valve-off 25, valve 27, distribution completes.(4) prepare experimental data acquisition system, schlieren system, the initiation system such as pressure transducer, make each system in standby condition.(5) take off top valve 40, with reference to accompanying drawing 5.(6) control and detonate, tested image data.(7) finishing analysis experimental data.
The second embodiment: the difference of this kind of mode and mode one is, this carries out datonation-inhibition experimental study, with reference to accompanying drawing 7, in (2) step of mode one, by this independently the porous medium joint area in pipeline.Other steps and mode one are similar.
Above-described embodiment of the present utility model is only for the utility model example clearly is described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all embodiments exhaustive.Every still row in protection domain of the present utility model of apparent variation that the technical solution of the utility model extends out or change that belong to.
Claims (5)
1. the utility model provides a kind of flammable gas explosion analogue experiment installation and explosion suppression device thereof, it is characterized in that: comprise multitube section explosion chamber, " ventilation-pressure release " safety valve designed for this explosion chamber specially, take the high-strength transparence emissive plastic glazing of observing for the ease of experimental image, gas distributing system, initiation system, pressure testing system, Research on Automatic Measuring System of Temperature, the schlieren optics test macro, the porous medium put area, data acquisition system (DAS), described each several part is connected on multitube section explosion chamber, make in explosion chamber to be full of premixed gas by controlling each valve, starting described initiation system detonates.
2. according to the described flammable gas explosion analogue experiment installation of right 1 and explosion suppression device thereof, it is characterized in that: one group of relative wall of described explosion chamber adopts high definition transparent plexiglass plate material.
3. according to the described flammable gas explosion analogue experiment installation of right 1 and explosion suppression device thereof, it is characterized in that: described porous medium put area adopts independent porous medium to place design, be connected in explosion chamber, and detachable.
4. according to the described flammable gas explosion analogue experiment installation of right 1 and explosion suppression device thereof, it is characterized in that: the mixed gas cylinder in described gas distributing system adopts many import designs, the air intake opening of inflammable gas is arranged to the top of mixed gas cylinder, air inlet is arranged at the below of mixed gas cylinder.
5. according to the described flammable gas explosion analogue experiment installation of right 1 and explosion suppression device thereof, it is characterized in that: described explosion chamber adopts multitube section form, and explosion chamber quantity can increase and decrease voluntarily.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200109880U CN203337648U (en) | 2013-01-10 | 2013-01-10 | Combustible gas explosion simulation experiment set and explosion suppression device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200109880U CN203337648U (en) | 2013-01-10 | 2013-01-10 | Combustible gas explosion simulation experiment set and explosion suppression device thereof |
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| CN203337648U true CN203337648U (en) | 2013-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655817A (en) * | 2015-01-23 | 2015-05-27 | 青岛科技大学 | Experiment device and method for simulating in-situ secondary explosion |
| CN109975358A (en) * | 2019-04-26 | 2019-07-05 | 中国矿业大学(北京) | A kind of experimental system and method for half open space gases explosion |
-
2013
- 2013-01-10 CN CN2013200109880U patent/CN203337648U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655817A (en) * | 2015-01-23 | 2015-05-27 | 青岛科技大学 | Experiment device and method for simulating in-situ secondary explosion |
| CN109975358A (en) * | 2019-04-26 | 2019-07-05 | 中国矿业大学(北京) | A kind of experimental system and method for half open space gases explosion |
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| 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: 20131211 Termination date: 20150110 |
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| EXPY | Termination of patent right or utility model |