CN208125655U - A kind of open fire dust cloud that ignites fires experimental determination device - Google Patents

A kind of open fire dust cloud that ignites fires experimental determination device Download PDF

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Publication number
CN208125655U
CN208125655U CN201820441832.0U CN201820441832U CN208125655U CN 208125655 U CN208125655 U CN 208125655U CN 201820441832 U CN201820441832 U CN 201820441832U CN 208125655 U CN208125655 U CN 208125655U
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China
Prior art keywords
tube
ignites
open fire
fires
determination device
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CN201820441832.0U
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Chinese (zh)
Inventor
张欣
张琰
任常兴
李晋
姜楠
慕洋洋
王玥
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Tianjin Institute of Fire Protection, Ministry of Emergency Management
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Tianjin Fire Fighting Institute Ministry of Public Security
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Abstract

The utility model provides a kind of open fire dust cloud that ignites and fires experimental determination device, including combustion tube, ignition system and spray dirt system;The ignition system includes the oxygen cylinder connecting respectively with the air inlet pipeline of gas mixture and flammable gas cylinder, and the outlet pipe of the gas mixture is connected with flame-thrower nozzle, and the flame-thrower nozzle is from the burning bottom of the tube deeply pipe;The spray dirt system includes sequentially connected compressed air air feed bottle, air accumulator and U-tube, the air accumulator is connected to by pipeline with the tube body of U-tube, the open at one end of the U-tube deeply manages interior conduct from the burning bottom of the tube or connects dust nozzle, and another end opening of the U-tube is located at except the combustion tube.The utility model can effectively study the combustion characteristics and rule that combustible dust cloud is ignited by open fire.

Description

A kind of open fire dust cloud that ignites fires experimental determination device
Technical field
The utility model belongs to security detection equipment technical field, and in particular to a kind of open fire dust cloud that ignites fires experiment Measurement device.
Background technique
The dust material that industrial production is related to is of a great variety, and risk differs greatly.The common occurrence of dust blast accident, danger And people life property safety.There are two main classes for the index of evaluation combustible dust explosion hazard at present:Explode susceptibility and Explosion severity, the index for measuring explosion susceptibility mainly have the minimum ignition temperature of dust cloud minimum ignition energy, dust layer, dust cloud Minimum ignition temperature, dust explosion least concentration etc., measuring the incendiary source that the above parameter uses includes electric spark, hot surface and change Igniting agent etc. is learned, does not cover open fire and ignites the test of dust cloud as ignition source.Open fire is the main of harmful influence blast accident Common gas-welding flame and oxygen cutting gun flame, are easy the flammable powder that ignites during one of incendiary source, especially hot work Dust clouds causes catastrophic failure.Therefore, the explosion susceptibility that research open fire lights dust cloud as ignition source has greater significance, It is ignited the experimental rig of dust cloud by developing open fire, different classes of combustible dust open fire under various concentration can be studied Ignition behavior, such as dust cloud Combustion flame height, flame color and brightness, and dust combustion when measuring open fire as ignition source Cmin.
Summary of the invention
The utility model is the combustion characteristics and rule ignited for research combustible dust cloud by open fire, a kind of survey of proposition The device that can examination dust in air cloud be ignited by open fire.
The open fire of the utility model dust cloud that ignites fires experimental determination device, including combustion tube, ignition system and spray dirt System;The ignition system includes the oxygen cylinder connecting respectively with the air inlet pipeline of gas mixture and flammable gas cylinder, the gas The outlet pipe of body gaseous mixture is connected with flame-thrower nozzle, and the flame-thrower nozzle is from the burning bottom of the tube deeply pipe;The spray Dirt system includes sequentially connected compressed air air feed bottle, air accumulator and U-tube, and the air accumulator passes through pipeline and U-tube Tube body connection, the open at one end of the U-tube deeply manage interior conduct or connection dust nozzle, the U from the burning bottom of the tube Another end opening of type pipe is located at except the combustion tube.
Wherein, the combustion tube is the quartz glass tube resistant to high temperature of both ends open, and diameter 14cm is highly 40cm; The burning bottom of the tube is detachably equipped with bracket.
Wherein, it is equipped with scale by the combustion tube and/or the combustion tube surface is equipped with scale.
Wherein, camera device is equipped with by the combustion tube.
Wherein, in the spray dirt system, on the pipeline between the compressed air air feed bottle and air accumulator and the storage The first solenoid valve and second solenoid valve are respectively equipped on pipeline between gas tank and U-tube.
Wherein, the air accumulator is equipped with pressure gauge.
Wherein, temperature measuring equipment is arranged in the combustion tube.
Compared with prior art, the utility model has the advantage that:Traditional dust explosion risk system safety testing device is logical It is used as ignition source frequently with hot surface and electric spark etc., there is no be classified as open fire wherein.The present apparatus is with common in work progress Oxygen cutting gun flame as ignition source, real scene more close to dust blast accident can be demonstrated truly flammable The characteristic ignited when property Dust Dispersion by open fire.By adjusting the additional amount of dust, can accurately measure flammable under the conditions of open fire Minimum concentration required for dust explosion.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to better understand the utility model, the utility model is further retouched below with reference to specific attached drawing It states.
The open fire of the utility model dust cloud that ignites fires experimental determination device, including combustion tube 1, ignition system and spray dirt System;The ignition system includes the oxygen cylinder 8 and flammable gas cylinder 9 connecting respectively with the air inlet pipeline of gas mixture 7, described The outlet pipe of gas mixture 7 is connected with flame-thrower nozzle 2, and the flame-thrower nozzle 2 is from 1 bottom of combustion tube deeply pipe; The spray dirt system includes sequentially connected compressed air air feed bottle 10, air accumulator 5 and U-tube 12, and the air accumulator 5 passes through pipe Road is connected to the tube body of U-tube 12, and the open at one end of the U-tube 12 is deeply managed interior conduct from 1 bottom of combustion tube or connected Connecing dust nozzle 3, (i.e. the opening of U-tube can also can connect a dust spray being separately provided directly as dust nozzle Mouth), another end opening of the U-tube 12 is located at except the combustion tube 1.
Wherein, the combustion tube 1 is the quartz glass tube resistant to high temperature of both ends open, and being preferably dimensioned to be diameter is 14cm, Height is 40cm;1 bottom of combustion tube is detachably equipped with bracket 4, for playing fixed supporting role to the combustion tube 1, Dismountable setting is cleared up after facilitating experiment.
Wherein, it can be additionally provided with scale (not shown) by the combustion tube 1 and/or 1 surface of the combustion tube is equipped with and carves Degree is capable of the height of dust cloud burning generates in display tube flame.
Wherein, 1 side of combustion tube can also separately set camera device, such as video recorder, for shooting record dust cloud burning Flame height, color and brightness of generation etc..
Wherein, in the spray dirt system, on the pipeline between the compressed air air feed bottle 10 and air accumulator 5, Yi Jisuo It states and is respectively equipped with the first solenoid valve 6-1 and second solenoid valve 6-2 on the pipeline between air accumulator 5 and U-tube 12, be respectively used to control The unlatching and closure of gas circuit where system.
Wherein, it is additionally provided with pressure gauge 11 on the air accumulator 5, for real-time detection and reflection stress level.
Wherein, temperature measuring equipment 13, such as infrared radiation thermometer can be set in the combustion tube 1.
The simplified process for using the device of the utility model to be tested for:Quantitative powder sample is weighed, by dust sample Product via U-tube 12 be located at the combustion tube 1 except opening be put into U-tube 12 manage it is interior spare.Open oxygen cylinder 8 and flammable Gas cylinder 9, oxygen and fuel gas (such as acetylene) are mixed by the pipeline of gas mixture 7, and combustion is lighted at flame-thrower nozzle 2 It burns, adjusting oxygen and fuel gas flow makes flame reach stable, which makes the present apparatus with common in work progress Oxygen cutting gun flame as ignition source.In advance open the first solenoid valve 6-1, compressed air from compressed air air feed bottle 10 into Enter air accumulator 5, pressure closes the first solenoid valve 6-1 after reaching target value in air accumulator 5.Reach steady in the flame of flame-thrower nozzle 2 After fixed, second solenoid valve 6-2 is opened, compressed air enters U-tube 12 from air accumulator 5, and the powder sample in U-tube 12 is with compression Air is sprayed from dust nozzle 3 together, forms dust cloud in combustion tube 1.When dust cloud meets burning condition, sprayed by flame The flame (open fire) of mouth 2 ignites.Dust cloud burning can be observed and recorded using scale, scale, temperature measuring equipment or camera device to produce Height, temperature, color and brightness of raw flame etc..
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (7)

1. a kind of open fire ignites, dust cloud fires experimental determination device, which is characterized in that including combustion tube (1), ignition system and Spray dirt system;The ignition system includes the oxygen cylinder (8) and combustible gas connecting respectively with the air inlet pipeline of gas mixture (7) Bottle (9), the outlet pipe of the gas mixture (7) is connected with flame-thrower nozzle (2), and the flame-thrower nozzle (2) is from the burning Pipe (1) bottom is deeply in pipe;The spray dirt system includes sequentially connected compressed air air feed bottle (10), air accumulator (5) and U-shaped Manage (12), the air accumulator (5) is connected to by pipeline with the tube body of U-tube (12), the U-tube (12) it is open at one end from institute It states combustion tube (1) bottom deeply to manage interior conduct or connect dust nozzle (3), another end opening of the U-tube (12) is located at institute It states except combustion tube (1).
2. open fire according to claim 1 ignites, dust cloud fires experimental determination device, which is characterized in that the combustion tube It (1) is the quartz glass tube resistant to high temperature of both ends open, diameter 14cm is highly 40cm;Combustion tube (1) bottom is removable It unloads and is equipped with bracket (4).
3. open fire according to claim 1 ignites, dust cloud fires experimental determination device, which is characterized in that the combustion tube (1) other scale and/or the combustion tube (1) surface of being equipped with is equipped with scale.
4. open fire according to claim 1 ignites, dust cloud fires experimental determination device, which is characterized in that the combustion tube (1) other to be equipped with camera device.
5. open fire according to claim 1 ignites, dust cloud fires experimental determination device, which is characterized in that the spray dirt system In system, on the pipeline between the compressed air air feed bottle (10) and air accumulator (5) and the air accumulator (5) and U-tube (12) the first solenoid valve (6-1) and second solenoid valve (6-2) are respectively equipped on the pipeline between.
6. open fire according to claim 1 ignites, dust cloud fires experimental determination device, which is characterized in that the air accumulator (5) pressure gauge (11) are equipped with.
7. open fire according to claim 1 ignites, dust cloud fires experimental determination device, which is characterized in that the combustion tube (1) temperature measuring equipment (13) are set.
CN201820441832.0U 2018-03-29 2018-03-29 A kind of open fire dust cloud that ignites fires experimental determination device Active CN208125655U (en)

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Application Number Priority Date Filing Date Title
CN201820441832.0U CN208125655U (en) 2018-03-29 2018-03-29 A kind of open fire dust cloud that ignites fires experimental determination device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110687024A (en) * 2019-09-18 2020-01-14 北方爆破科技有限公司 Image-based blasting dust amount measuring method
CN111780874A (en) * 2019-04-04 2020-10-16 应急管理部化学品登记中心 Method suitable for solid dust particle combustion radiation spectrum measurement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111780874A (en) * 2019-04-04 2020-10-16 应急管理部化学品登记中心 Method suitable for solid dust particle combustion radiation spectrum measurement
CN110687024A (en) * 2019-09-18 2020-01-14 北方爆破科技有限公司 Image-based blasting dust amount measuring method

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Address after: No. 110 Wei Jinnan Road, Nankai District, Tianjin

Patentee after: Tianjin Institute of Fire Protection, Ministry of Emergency Management

Address before: No. 110 Wei Jinnan Road, Nankai District, Tianjin

Patentee before: Tianjin Fire Fighting Inst., Ministry of Public Security