CN109187636A - The experimental provision and method of dust explosive characteristic are measured under the conditions of a kind of visualization is isobaric - Google Patents
The experimental provision and method of dust explosive characteristic are measured under the conditions of a kind of visualization is isobaric Download PDFInfo
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- CN109187636A CN109187636A CN201811236263.7A CN201811236263A CN109187636A CN 109187636 A CN109187636 A CN 109187636A CN 201811236263 A CN201811236263 A CN 201811236263A CN 109187636 A CN109187636 A CN 109187636A
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- dust
- latex balloon
- control system
- spray head
- powder tank
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
Abstract
The present invention relates to a kind of visualization measures dust explosive characteristic experimental provisions and method under the conditions of isobaric, including air distribution system, intelligence control system, appliance stand, storage powder tank, air induction conduit, spray head, latex balloon bracket, igniter combined system, latex balloon enclosed globe shade.The air distribution system includes one of air, imflammable gas or inert gas or multiple combinations gas；The intelligence control system includes PLC technology unit and remote control unit, and by programming Control ventilation component, and then the control for realizing to air inlet, dusting and lighting a fire；High pressure gas access aperture is equipped with inside the storage powder tank, top is connected with dust dispersion spray-hole；Aperture access air induction conduit, dust injection catheter, igniter and respective sensor among the spray head.This experimental provision is easy to operate, and experimental method is easy, and experimental phenomena is obvious, and the influence for firing phenomenon, while eliminating wall effect can be directly observed by latex balloon enclosed globe shade.
Description
Technical field
The present invention relates to the field of research dust explosion combustion phenomena, powder is measured under the conditions of specifically a kind of visualization is isobaric
The experimental provision and method of dirt explosive characteristic.
Background technique
With the intensification of social industrialization degree, various dust materials also generate therewith, all kinds of dust combustion explosion accidents
And come one after another, such as " China's safety in production science and technology " magazine (2015,11 (2), 186-190) has statisticallyd analyze in recent years
Carry out all kinds of dust blast accidents in China, it is big that a large amount of dust blast accident carries out domestic and international researcher to dust explosion
Quantifier elimination work.
The existing test device to dust explosion is mostly Hartmann Bomb (1.2L), 20L spherical blast container and 1m3Explosion is held
Device.Hartmann Bomb is mainly used for testing the minimum ignition energy (fire science and technology, 2016) to dust；20L spherical blast is surveyed
The lower explosion limit for being mainly used for test dust, blast pressure and blast pressure climbing speed are set in trial assembly；By iso standard, 1m3Explosion
Test device is also used for the test of dust explosion, but compares with 20L spherical blast device and find that its ignition effectiveness is lower
(Journal ofLoss Prevention in the Process Industries, 2007).The above test dust burning is quick-fried
Fried experiment is the dust explosion experiment carried out in limited or confined space, and is mostly not visible experiment, without it is any can
The channel seen.
For visual dust test device, researcher has conducted extensive research work simultaneously.Wherein patent
(CN103940850A) a kind of dust explosion experiment test device is disclosed, by the way that photoscope is arranged in explosion chamber, two sides are set
Focusing schlieren system is set, records internal dust explosion flow field image, and energy using high-speed camera and high-speed schlieren image measurement
Enough capture the combustion state of single powder dust particle；Patent (CN101477094B) discloses a kind of using water mists inhibition gas
And the experimental provision of dust explosion, device wall is equipped with transparent observing window and overlays the relief hole of explosion rupture disk, built-in
Temperature sensor and pressure sensor can detecte dust explosion and it is datonation-inhibition during temperature and pressure variation；Patent
(CN106248733A) a kind of more form multifunctional gas, the datonation-inhibition experimental system of dust explosion are provided, is examined equipped with multiple optics
Disconnected form, synchronizes test to gas, dust explosion combustion process.Though above device is provided with observation window, due to
Size is smaller or limited confined space, more accurate can not clearly observe dust combustion flame propagation mistake under the conditions of equipressure
The unstability pair of the variation of flame structure in journey and instability Mechanism, the essence that turbulent flow is formed and burned region and unburned regional boundary face
The rule of the combustion reactions such as the influence of flame acceleration.
For above-mentioned phenomenon, the invention proposes a kind of visualization measures dust explosive characteristic experiment dresses under the conditions of isobaric
Set and method, the device be under the conditions of simulation is isobaric using latex balloon realize dust fire visual experiment test device and
Method.
Summary of the invention
In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide visual under the conditions of a kind of equipressure
The experimental provision and method of simulating dust burning and explosion can directly observe dust combustion by transparent latex balloon enclosed globe shade
Burning and explosion phenomenon pass through variation and unstability rule, propagation law that the ancillary equipments such as high-speed camera shoot record flame structure
With the features such as the development of turbulent flow.
To achieve the above object, the present invention is implemented with the following technical solutions.
The experimental provision that dust explosive characteristic is measured under the conditions of a kind of visualization is isobaric, specifically includes air distribution system, intelligence
Control system, appliance stand, storage powder tank, air induction conduit, spray head, latex balloon bracket, igniter combined system, latex balloon ball
Shape cover.The air distribution system includes one of air, imflammable gas or inert gas or multiple combinations gas, and is furnished with
Gas pressure reducer；The intelligence control system includes PLC technology unit and remote control unit；The igniting combined system
Including height-adjustable igniter bracket and adjustable energy high-voltage pulses device.
Above-mentioned air distribution system is connected by high pressure resistant hose with intelligence control system, and intelligence control system is fixed on device
The right side of bracket, using pressure hose by air distribution system and storage powder tank and air induction conduit connect, by copper wires with
Combined system of lighting a fire is connected, and by the programming Control ventilation component of intelligence control system, and then realizes to air inlet, dusts and point
The control of fire.
In above-mentioned apparatus, connection maincenter of the intelligence control system as whole device is connected to air distribution system, Chu Fen
Tank, air induction conduit and igniting combined system, at the same can setting program realize the ejection, dispersion and ignition process of dust.
In above-mentioned apparatus, the storage powder tank is removable metal can, and inside is equipped with high pressure gas access aperture (use of dusting),
Top is connected with dust dispersion spray-hole.
In above-mentioned apparatus, the spray head is ellipsoid and cylinder assembly, and spray head accesses air induction conduit, powder by intermediate aperture
Dirt injection catheter, igniter and respective sensor.
In above-mentioned apparatus, the enclosed globe shade is transparent latex balloon, and latex balloon is supported by latex balloon bracket,
Its volume size can be adjusted as needed.
The experimental method of dust explosive characteristic is measured under the conditions of a kind of visualization is isobaric, comprising the following steps:
St1: writing the operation program of intelligence control system, the time that air inlet is arranged, dusts and lights a fire；
St2: the mixed gas output pressure of air distribution system is adjusted；
St3: weighing the dust of certain mass, is placed in storage powder tank；
St4: transparent latex balloon is fixed on spray head；
St5: remote opening intelligence control system makes its gradually each component in control piper, gives latex balloon inflation first,
Then high pressure mixed gas enters storage powder tank, sprays preset dust from spray head；
St6: after certain delay time, intelligence control system gives control igniting combined system to be powered automatically and lights a fire；
St7: experimenter operates high speed video system at a distance, records the process of dust ejection and ignition.
Compared with prior art, the invention has the advantages that and the utility model has the advantages that the present apparatus is filled using transparent latex balloon
When dust fires the main body container of reaction, the visualization of overall process is dusted, lights a fire and is fired in realization, while being tested in isobaric condition
Lower progress eliminates influence of the wall effect to experimental result.The present apparatus uses intelligence control system, effective and reasonable control ventilation
With the late ignition time, reduce influence of the vortex to experimental result, Dust distribution is uniform.It can realize remote operation simultaneously, improve
The safety of experiment.Various realities can be obtained by the various sensors and external experimental facilities, experimenter that access in spray head
Test parameter.
Detailed description of the invention
Fig. 1 is present system structural schematic diagram, and specific structure is as follows:
1- air distribution system, 2- intelligence control system, 3- appliance stand, 4- store up powder tank, 5- air induction conduit, 6- spray
Head, 7- latex balloon bracket, 8- igniter combined system, 9- latex balloon enclosed globe shade.
Specific embodiment
Technical solution of the present invention is further described in detail with reference to the accompanying drawings and detailed description.
Embodiment 1:
The experimental provision of dust explosive characteristic is measured under the conditions of a kind of visualization is isobaric as shown in Figure 1, air distribution system 1 be by
One or more of air, imflammable gas and inert gas combine gas system, and equipped with correspondingly pressure reducing valve, can be with
Control the pressure size of gas conveying；Intelligence control system 2 is fixedly mounted on the right side of dusting device bracket 3, it is as entire
The into and out control axis of distribution enters the time sprayed with dust by setting process control distribution；Storage powder tank 4 is can
Tear metallic combination tank body open, bottom end vicinity is equipped with high pressure gas access aperture in one side, and the tracheae that dusts is protruded into storage powder tank by the hole
Between, the dust dispersion spray-hole of upper part is fixedly connected on spray head 6；Spray head 6 is fixedly welded on appliance stand, and center is opened
There are multiple apertures, air induction conduit 5, igniting combined system 8 and various kinds of sensors (as needed) can be respectively connected to；Igniting combination
System 8 extend into 9 centre of transparent latex balloon enclosed globe shade by the aperture of 6 center of spray head, and igniter uses adjustable
It can high-voltage pulses device；Latex balloon enclosed globe shade 9 is first fixed on spray head 6 before experiment, then the high pressure gas through air induction conduit 5
After body inflation, it can be supported by latex balloon bracket 7.
Embodiment 2:
Distribution uses hydrogen-air mixed gas in this example, and dust uses aluminium powder, illustrates a kind of visualization with this
The operating procedure of the experimental method of dust explosive characteristic is measured under the conditions of equipressure:
St1: when being tested, first writing the operation program of intelligence control system 2, setting air inlet, dust and light a fire when
Between；
St2: the hydrogen-air mixed gas of configuration certain volume ratio (1:9) adjusts the pressure reducing valve of air distribution system 1, makes
Mixed gas output pressure reaches requirement (2MPa)；
St3: weighing the aluminium powder of certain mass (10g), is placed in storage powder tank 4；
St4: transparent latex balloon 9 is fixed on spray head 6；
St5: control intelligence control system 2 is opened in long-range starting, is made its gradually ventilation component in control piper, is beaten first
It drives the ventilation component at airway 5 into, inflates (14L) to latex balloon 9, and then open the ventilation component at storage powder tank 4, it is high
It presses mixed gas to spray aluminium powder at spray head 6 to disperse out, and so that latex balloon 9 is obtained volume and reach 20L；
St6: aluminium powder sprays, and after certain delay time (60ms), aluminium powder is diffused in cloud, and and mixed gas
Premix is uniform, and unlatching intelligence control system 2 control igniting combined system 8, which is powered, at this time lights a fire, and completes entirely to fire aluminium powder
The experiment of journey；
St7: experimenter operates high speed video system at a distance, can directly observe with whole process record entire aluminium powder spray and
The process of ignition.
Claims (6)
1. measuring the experimental provision and method of dust explosive characteristic, including air distribution system, intelligence under the conditions of a kind of visualization is isobaric
Control system, appliance stand, storage powder tank, air induction conduit, spray head, latex balloon bracket, igniter combined system, latex balloon ball
Shape cover, it is characterised in that intelligence control system includes PLC technology unit and remote control unit, is fixedly mounted on device branch
The right side of frame is attached between air distribution system, storage powder tank, air induction conduit, spray head and intelligence control system using pressure hose,
It is attached between igniting combined system and intelligence control system using copper conductor wire.
2. the experimental provision of dust explosive characteristic according to claim 1, it is characterised in that the storage powder tank is detachable
Metal can is combined, bottom end vicinity is equipped with high pressure gas access aperture (use of dusting) in one side, and the tracheae that dusts is protruded by the hole
It stores up among powder tank, top is connected with dust dispersion spray-hole.
3. the experimental provision of dust explosive characteristic according to claim 1, it is characterised in that the spray head is to be fixedly welded
Metallic object on appliance stand, center are provided with multiple apertures, to access air induction conduit, igniter and various kinds of sensors
Deng.
4. the experimental provision of dust explosive characteristic according to claim 1, it is characterised in that the igniter combined system
Adjustable igniting position height, while igniter selects adjustable energy high-voltage pulses device.
5. dust explosive characteristic experimental provision according to claim 1, it is characterised in that the latex balloon enclosed globe shade is
High-strength transparence latex balloon, and balloon volume size can be adjusted as needed.
6. the experimental method of dust explosive characteristic according to claim 1, it is characterised in that following steps:
St1: writing the operation program of intelligence control system, the time that air inlet is arranged, dusts and lights a fire；
St2: the mixed gas output pressure of air distribution system is adjusted；
St3: weighing the dust of certain mass, is placed in storage powder tank；
St4: transparent latex balloon is fixed on spray head；
St5: remote opening intelligence control system makes its gradually each component in control piper, gives latex balloon inflation first, then
High pressure mixed gas enters storage powder tank, sprays preset dust from spray head；
St6: after certain delay time, intelligence control system gives control igniting combined system to be powered automatically and lights a fire；
St7: experimenter operates high speed video system at a distance, records the process of dust ejection and ignition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811236263.7A CN109187636A (en) | 2018-10-23 | 2018-10-23 | The experimental provision and method of dust explosive characteristic are measured under the conditions of a kind of visualization is isobaric |
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|---|---|---|---|
| CN201811236263.7A CN109187636A (en) | 2018-10-23 | 2018-10-23 | The experimental provision and method of dust explosive characteristic are measured under the conditions of a kind of visualization is isobaric |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113456A (en) * | 2021-11-24 | 2022-03-01 | 安徽理工大学 | Unconfined gas cloud detonation experimental device and test method |
| CN115032325A (en) * | 2022-04-12 | 2022-09-09 | 北京理工大学 | Device and method for researching spontaneous combustion of magnesium powder |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202838784U (en) * | 2012-06-30 | 2013-03-27 | 曹欣媛 | Dust explosion experiment device |
| CN103239963A (en) * | 2013-05-17 | 2013-08-14 | 安徽理工大学 | Graphite dust collector |
| CN203366620U (en) * | 2013-04-15 | 2013-12-25 | 成都科创佳思科技有限公司 | Explosion experiment apparatus for dust burning |
| CN203415151U (en) * | 2013-03-20 | 2014-01-29 | 曹晓春 | Powder explosion tester |
| CN205538948U (en) * | 2016-03-04 | 2016-08-31 | 中钢集团武汉安全环保研究院有限公司 | Experimental testing arrangement of dust explosion parameter |
| CN105928978A (en) * | 2016-04-20 | 2016-09-07 | 中国石油化工股份有限公司 | Testing apparatus for burning and explosion of combustible gas in narrow, long and restricted space |
| CN106248733A (en) * | 2016-08-24 | 2016-12-21 | 西安科技大学 | A kind of many forms multifunctional gas, the datonation-inhibition experimental system of dust explosion |
| CN206148002U (en) * | 2016-06-24 | 2017-05-03 | 杨兆鑫 | Remote control dust explosion demonstration ware |
| CN107121453A (en) * | 2017-05-25 | 2017-09-01 | 西安科技大学 | It is applicable the gas, dust explosion and datonation-inhibition experimental system of a variety of optical diagnostic methods |
| CN107744731A (en) * | 2017-11-22 | 2018-03-02 | 安徽理工大学 | A kind of air distributing device that experiment is fired for fuel gas, liquid vapour and dust |
| CN108645761A (en) * | 2018-05-30 | 2018-10-12 | 西安科技大学 | The visualization system and method for test dust particle motion feature and parameter |
-
2018
- 2018-10-23 CN CN201811236263.7A patent/CN109187636A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202838784U (en) * | 2012-06-30 | 2013-03-27 | 曹欣媛 | Dust explosion experiment device |
| CN203415151U (en) * | 2013-03-20 | 2014-01-29 | 曹晓春 | Powder explosion tester |
| CN203366620U (en) * | 2013-04-15 | 2013-12-25 | 成都科创佳思科技有限公司 | Explosion experiment apparatus for dust burning |
| CN103239963A (en) * | 2013-05-17 | 2013-08-14 | 安徽理工大学 | Graphite dust collector |
| CN205538948U (en) * | 2016-03-04 | 2016-08-31 | 中钢集团武汉安全环保研究院有限公司 | Experimental testing arrangement of dust explosion parameter |
| CN105928978A (en) * | 2016-04-20 | 2016-09-07 | 中国石油化工股份有限公司 | Testing apparatus for burning and explosion of combustible gas in narrow, long and restricted space |
| CN206148002U (en) * | 2016-06-24 | 2017-05-03 | 杨兆鑫 | Remote control dust explosion demonstration ware |
| CN106248733A (en) * | 2016-08-24 | 2016-12-21 | 西安科技大学 | A kind of many forms multifunctional gas, the datonation-inhibition experimental system of dust explosion |
| CN107121453A (en) * | 2017-05-25 | 2017-09-01 | 西安科技大学 | It is applicable the gas, dust explosion and datonation-inhibition experimental system of a variety of optical diagnostic methods |
| CN107744731A (en) * | 2017-11-22 | 2018-03-02 | 安徽理工大学 | A kind of air distributing device that experiment is fired for fuel gas, liquid vapour and dust |
| CN108645761A (en) * | 2018-05-30 | 2018-10-12 | 西安科技大学 | The visualization system and method for test dust particle motion feature and parameter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114113456A (en) * | 2021-11-24 | 2022-03-01 | 安徽理工大学 | Unconfined gas cloud detonation experimental device and test method |
| CN115032325A (en) * | 2022-04-12 | 2022-09-09 | 北京理工大学 | Device and method for researching spontaneous combustion of magnesium powder |
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Application publication date: 20190111 |