CN205192996U - Dust is igniteed can testing arrangement - Google Patents
Dust is igniteed can testing arrangement Download PDFInfo
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- CN205192996U CN205192996U CN201521006927.2U CN201521006927U CN205192996U CN 205192996 U CN205192996 U CN 205192996U CN 201521006927 U CN201521006927 U CN 201521006927U CN 205192996 U CN205192996 U CN 205192996U
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Abstract
The utility model provides a dust is igniteed can testing arrangement, including gas holder, storage powder jar, the graceful pipe of hart, electric spark emergence system, control system, the gas holder gas outlet is connected through the admission line with storage powder jar, it links to each other with the graceful pipe of hart through advancing the tube cell way to store up the powder jar, be equipped with the ignitor electrode on the lateral wall of the graceful pipe of hart, the ignitor electrode links to each other with electric spark emergence system, the systems and control system takes place and links to each other for the electric spark, be equipped with the admission valve that links to each other with control system on the admission line, it says and to be equipped with the whitewashed valve that advances that links to each other with control system to advance the tube cell, an air piston links to each other with control system for adjusting interval between the ignitor electrode. The utility model discloses can the different concentration dust of effectual survey ignite can, test reliable and simple, simple operation, energy calculate convenient science.
Description
Technical field
The utility model belongs to security technology area, is specifically related to a kind of dust ignition energy proving installation.
Background technology
Dust is the very common inevitable material again of one.In modern industry is produced, dust explosion has become and has threatened one of people life security, major accident of causing any property loss.Dust explosion accident relates to chemical industry, metallurgical industry, building materials industry and war industry.Domestic and international researchist has carried out a large amount of experimental studies around dust explosion security, as adopted 20L spherical tank research dust/gas burst ability, explosion pressure and rate of pressure rise.The device of test explosion limits has both at home and abroad at present: the 5L blast ball that ASTME681-04 (i.e. GB/T21844-2008) introduces, the tube-type explosive limit test instrument that European Union EC440-2008 introduces, the tube-type explosive limit test instrument that GB12474 introduces, the 1L tube-type explosive limit test instrument that ASTME918 introduces; Wherein first three cover instrument is all for the test under normal pressure and condition of negative pressure, and the 4th cover instrument is the test for high pressure under process conditions.At present, these device and methods only relate to the explosible limit concentration, explosion pressure, rate of pressure rise etc. of dust material, all do not relate to mensuration ignition energy.
Summary of the invention
Goal of the invention of the present utility model is overcome the deficiencies in the prior art and provide a kind of dust ignition energy proving installation that can regulate dust concentration and ignition energy continuously.
Above-mentioned purpose of the present utility model is achieved by the following technical solution: comprise gas-holder, storage powder tank, Hartmann Bomb, electric spark generation systems, control system; Described gas-holder gas outlet is connected through admission line with storage powder tank; Described storage powder tank is connected with Hartmann Bomb through powder inlet pipe road; The sidewall of described Hartmann Bomb is provided with spark electrode; Described spark electrode is connected with electric spark generation systems; Electric spark generation systems is connected with control system; Described admission line is provided with the gas admittance valve be connected with control system; Described powder inlet pipe road is provided with the powder entering valve be connected with control system; Be connected with control system for regulating the pneumatic piston of spacing between spark electrode.
One end, described powder inlet pipe road is provided with scattering shower nozzle; Described scattering shower nozzle stretches in Hartmann Bomb.
The utility model is by electric spark generation systems storage power, and produce electric spark in-between the electrodes, ignite/ignite the dust gone out from Hartmann Bomb base injcction, obtains ignition energy according to charging voltage and accumulate capacitance calculation.Regulate Dust Capacity to realize the dust of variable concentrations by storage powder tank and gas-holder.Method of testing is simple, simple operation, energy balane facilitate science.The utility model compared with prior art tool has the following advantages: the mensuration 1) achieving dust ignition energy; 2) the continuous adjustment of dust concentration and ignition energy is achieved; 3) robotization of mensuration is achieved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1, control system, 2, electric spark generation systems, 3, pneumatic piston, 4, storage powder tank, 5, gas-holder, 6, scattering shower nozzle, 7, electrode, 8, Hartmann Bomb.
Embodiment
In Fig. 1, the utility model comprises gas-holder 5, storage powder tank 4, Hartmann Bomb 8, electric spark generation systems 2, control system 1; Gas-holder 5 gas outlet is connected through admission line with storage powder tank 4; Storage powder tank 4 is connected with Hartmann Bomb 8 through powder inlet pipe road; The sidewall of Hartmann Bomb 8 is provided with spark electrode 7; Spark electrode 7 is connected with electric spark generation systems 2; Electric spark generation systems 2 is connected with control system 1; Admission line is provided with the gas admittance valve be connected with control system 1; Powder inlet pipe road is provided with the powder entering valve be connected with control system 1; Be connected with control system 1 for regulating the pneumatic piston 3 of spacing between spark electrode 7.One end, powder inlet pipe road is provided with scattering shower nozzle 6; Scattering shower nozzle 6 stretches in Hartmann Bomb 8.By electric spark generation systems 2 storage power, between electrode 7, produce electric spark, ignite/ignite the dust that scattering shower nozzle 6 ejects bottom Hartmann Bomb 8, obtains ignition energy according to charging voltage and accumulate capacitance calculation.
Control system 1 can realize the automatic control to electric spark generation systems 2, pneumatic piston 3, storage powder tank 4, gas-holder 5.Control system 1 internal module arranges and can adopt existing techniques in realizing, no longer describes in detail at this.
Electric spark generation systems 2 can obtain ignition energy according to charging voltage and accumulate capacitance calculation, namely
.Sparker energy range: 1 ~ 10
4mJ.
Pneumatic piston 3 can to regulate between electrode 7 spacing to realize electric discharge as required.Pneumatic piston 3 is arranged at 1/1 to two/3rd At The Height bottom Hartmann Bomb 8.
Regulate dust and gas flow to realize the dust of variable concentrations by storage powder tank 4 and gas-holder 5.
Be determined as example with aluminium powder explosion limits, use the utility model method of testing as follows:
The first step: a certain amount of aluminium powder imported in storage powder tank 4, to be filled by gas-holder 5 according to aluminium powder concentration requirement and pours a certain amount of air (or other testing requirements gases) in storage powder tank 4, make storage powder tank 4 be in state to be excited;
Second step: according to testing requirements energy, arranges charging voltage and the accumulate electric capacity of electric spark generation systems 2, charges to be tested;
3rd step: by control system 1, controls storage powder tank valve, makes to be sprayed by scattering shower nozzle containing aluminium powder gas, is full of whole Hartmann Bomb;
4th step: by control system, controls pneumatic piston traveling electrode, and dust response condition is observed in electric discharge;
5th step: record experimental phenomena, aluminium powder concentration, discharge energy.
As calculated, ignition energy is about 55mJ.
Claims (2)
1. a dust ignition energy proving installation, is characterized in that: comprise gas-holder (5), storage powder tank (4), Hartmann Bomb (8), electric spark generation systems (2), control system (1);
Described gas-holder (5) gas outlet is connected through admission line with storage powder tank (4); Described storage powder tank (4) is connected with Hartmann Bomb (8) through powder inlet pipe road; The sidewall of described Hartmann Bomb (8) is provided with spark electrode (7); Described spark electrode (7) is connected with electric spark generation systems (2); Electric spark generation systems (2) is connected with control system (1);
Described admission line is provided with the gas admittance valve be connected with control system (1);
Described powder inlet pipe road is provided with the powder entering valve be connected with control system (1);
Be connected with control system (1) for regulating the pneumatic piston (3) of spacing between spark electrode (7).
2. dust ignition energy proving installation according to claim 1, is characterized in that: one end, described powder inlet pipe road is provided with scattering shower nozzle (6); Described scattering shower nozzle (6) is stretched in Hartmann Bomb (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521006927.2U CN205192996U (en) | 2015-12-08 | 2015-12-08 | Dust is igniteed can testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521006927.2U CN205192996U (en) | 2015-12-08 | 2015-12-08 | Dust is igniteed can testing arrangement |
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| CN205192996U true CN205192996U (en) | 2016-04-27 |
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| CN201521006927.2U Active CN205192996U (en) | 2015-12-08 | 2015-12-08 | Dust is igniteed can testing arrangement |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891254A (en) * | 2016-06-30 | 2016-08-24 | 东北大学 | Dust-layer ignition sensitivity testing device and method under action of electric sparks |
| CN107219257A (en) * | 2017-06-07 | 2017-09-29 | 上海化工研究院有限公司 | A kind of soft closed cycle dust explosion simulation test device and application method |
| CN109668999A (en) * | 2017-10-17 | 2019-04-23 | 中国石油化工股份有限公司 | The test device of gas-particle two-phase combustible material minimum ignition energy |
| CN110068649A (en) * | 2019-04-15 | 2019-07-30 | 沈阳建筑大学 | A kind of assessment friction spark ignites the experimental provision and method of dust ability |
-
2015
- 2015-12-08 CN CN201521006927.2U patent/CN205192996U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891254A (en) * | 2016-06-30 | 2016-08-24 | 东北大学 | Dust-layer ignition sensitivity testing device and method under action of electric sparks |
| CN105891254B (en) * | 2016-06-30 | 2018-06-26 | 东北大学 | Dust layer under a kind of effect of electric spark catches fire sensitivity test device and method |
| CN107219257A (en) * | 2017-06-07 | 2017-09-29 | 上海化工研究院有限公司 | A kind of soft closed cycle dust explosion simulation test device and application method |
| CN107219257B (en) * | 2017-06-07 | 2019-11-12 | 上海化工研究院有限公司 | A kind of soft closed cycle dust explosion simulation test device and application method |
| CN109668999A (en) * | 2017-10-17 | 2019-04-23 | 中国石油化工股份有限公司 | The test device of gas-particle two-phase combustible material minimum ignition energy |
| CN110068649A (en) * | 2019-04-15 | 2019-07-30 | 沈阳建筑大学 | A kind of assessment friction spark ignites the experimental provision and method of dust ability |
| CN110068649B (en) * | 2019-04-15 | 2021-06-29 | 沈阳建筑大学 | Experimental device and method for evaluating dust ignition capability of friction spark |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |