CN105891254A - Dust-layer ignition sensitivity testing device and method under action of electric sparks - Google Patents
Dust-layer ignition sensitivity testing device and method under action of electric sparks Download PDFInfo
- Publication number
- CN105891254A CN105891254A CN201610504939.0A CN201610504939A CN105891254A CN 105891254 A CN105891254 A CN 105891254A CN 201610504939 A CN201610504939 A CN 201610504939A CN 105891254 A CN105891254 A CN 105891254A
- Authority
- CN
- China
- Prior art keywords
- dust
- dust layer
- electric spark
- sensitivity
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010892 electric spark Methods 0.000 title claims abstract description 72
- 230000035945 sensitivity Effects 0.000 title claims abstract description 66
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000428 dust Substances 0.000 claims abstract description 205
- 238000002360 preparation method Methods 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims description 54
- 230000000694 effects Effects 0.000 claims description 36
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 238000001931 thermography Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 238000004880 explosion Methods 0.000 description 5
- 230000008447 perception Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a dust-layer ignition sensitivity testing device and method under the action of electric sparks. The device comprises a base, a stand column, a dust carrying platform, a retractable cantilever beam and an electric spark generator, wherein a needle tip electrode is fixedly arranged at one end of the retractable cantilever beam, and the other end of the retractable cantilever beam sleeves the stand column; the dust carrying platform is provided with a dust drawing disc and a dust-layer preparation cover; an anode of the electric spark generator is connected with the needle tip electrode, and a cathode of the electric spark generator is conducted to the dust drawing disc. The method comprises the following steps: horizontally arranging the testing device and finishing wiring; controlling the retractable cantilever beam to be retracted back and preparing a dust layer according to a set thickness; controlling the retractable cantilever beam to be stretched so that the tip of the needle tip electrode is located just above the dust layer, and adjusting the distance between the needle tip electrode and the dust layer; starting the electric spark generator and outputting highest energy; identifying whether dust to be detected has ignition sensitivity or not; if so, preparing the dust layer again and carrying out a sensitivity test of the ignition sensitivity; measuring smallest ignition energy of the dust layer under different thicknesses through adjusting output energy of the electric spark generator and the thickness of the dust layer.
Description
Technical field
The invention belongs to industrial dust explosion protection technical field, the dust layer particularly related under a kind of electric spark effect catches fire quick
Perception test device and method.
Background technology
In combustible powder process industrial, the electric spark that electrostatic produces is relatively conventional dust explosion incendiary source, can in order to evaluate
Combustion dust cloud risk of explosion under electric spark effect, promulgates there is set of Dust Cloud Minimal Ignition Energy testing standard both at home and abroad,
Such as CEI IEC 61241-2-3-1994, BS EN 13821-2002, ASTM E2019-03-2007 etc., based on above-mentioned standard
Also the MIKE 3 etc. of a lot of Dust Cloud Minimal Ignition Energy test device, such as Switzerland has been emerged in large numbers.
But in actual industrial production, not merely having cloud, stratiform sedimentating dust is also the common existence of one of combustible dust
Form, and show according to existing result of study, under electric spark effect, there is the possibility caught fire in stratiform sedimentating dust, and then
Dust explosion can be caused.
But, at present for how testing and evaluate stratiform sedimentating dust risk of explosion under electric spark effect, present stage is not yet
There is relevant testing standard to promulgate, be more not based on the test device of standard, and existing dust layer sensitivity of catching fire is surveyed
Test-object is accurate, and it is all to catch fire sensitivity tests for the dust under high-temperature hot surface action.
Therefore, needing a set of brand-new dust layer of design badly and catch fire sensitivity test device and method, it should meet in electric spark effect
Under stratiform sedimentating dust catch fire sensitivity tests, catch fire sensitivity assessment index system in order to improve existing combustible dust, make up
Existing combustible dust catches fire the blank of sensitivity tests standard.
Summary of the invention
The problem existed for prior art, the present invention provides the dust layer under a kind of electric spark effect to catch fire sensitivity test device
And method, effectively meet the stratiform sedimentating dust under electric spark effect and catch fire sensitivity tests, the most perfect existing flammable powder
Dirt catches fire sensitivity assessment index system, effectively compensate for existing combustible dust and catches fire the blank of sensitivity tests standard.
To achieve these goals, the dust layer under the present invention adopts the following technical scheme that a kind of electric spark effect catches fire sensitivity
Test device, including base, column, load powder platform, telescopic cantilever beam and sparker, described column is vertically packed in
On base, described load powder platform level is packed on base, and described telescopic cantilever beam is positioned at above load powder platform, in telescopic cantilever
Beam one end is vertically fixed with needlepoint electrode, and the tip of needlepoint electrode is down；The other end of described telescopic cantilever beam is sleeve knot
Structure, telescopic cantilever beam is set on column by tube-in-tube structure, is provided with positioning and locking bolt between tube-in-tube structure and column；
Offer circular groove at described load powder platform upper surface, be fixed with in circular groove and drag powder dish, and drag powder dish and carry the upper of powder platform
Surface is in same level；It is provided above dust layer preparation cover at described load powder platform, prepares cover center at dust layer and offer
There is dust layer to prepare hole, carrying powder platform side, conductive contact is installed；The positive pole of described sparker passes through wire and needle point
Electrode is connected, and the negative pole of sparker is connected with conductive contact by wire, and conductive contact is by wire and load powder platform
It is connected；Described base, column, load powder platform and telescopic cantilever beam all use insulant manufacture, described in drag powder dish use conduction
Material manufactures.
The quantity of described dust layer preparation cover is some, and the thickness of some dust layers preparation cover is different.
Described column outer surface is provided with graduated scale.
And needlepoint electrode upper end outside at described wire is all coated with High-Voltage Insulation protection set.
The described dust layer under the electric spark effect sensitivity test device that catches fire is also configured with high-speed camera and infrared thermal imaging
Instrument.
The described dust layer under the electric spark effect sensitivity test device that catches fire is also configured with scraper plate, and scraper plate is connect by wire
Ground.
Dust layer under a kind of electric spark effect catches fire sensitivity tests method, have employed the dust layer under described electric spark effect
Catch fire sensitivity test device, comprises the steps:
Step one: prepare horizontal reference platform at, is placed into test device on horizontal reference platform, it is ensured that carries powder platform and is in all the time
Level；
Step 2: linked together by the positive pole of needlepoint electrode with sparker with a wire, will lead with another root wire
Electric connection links together with the negative pole of sparker, and then makes the negative pole of sparker be conducted with dragging powder dish；
Step 3: telescopic cantilever beam is adjusted to retracted mode, makes needlepoint electrode fall back on load powder platform side, prepares for dust layer
Prepare；
Step 4: choose a thinnest dust layer of thickness prepare cover be placed in load powder platform on, dust layer thickness is prepared by dust layer
Cover setting；
Step 5: the dust layer that dust to be measured is poured slowly into dust layer preparation cover is prepared in hole, then utilizes ground connection scraper plate by powder
Knoisphere upper surface strikes off, then dust layer is prepared the dust being scattered around hole cleans out, and finally removes dust layer preparation cover, complete
Dust layer is become to prepare；
Step 6: telescopic cantilever beam is adjusted to extended configuration, it is ensured that needlepoint electrode tip is positioned at directly over dust layer；
Step 7: unclamp positioning and locking bolt, adjusts telescopic cantilever beam position on column, and then adjusts needlepoint electrode point
Spacing between end and dust layer, sets the initial value of a spacing, finally screws positioning and locking bolt further according to graduated scale；
Step 8: start sparker, controls sparker output highest energy, in order to whether to screen dust to be measured
Having sensitivity of catching fire, concrete condition is as follows:
1. observe and whether produce electric spark between needlepoint electrode tip and dust layer, produce without electric spark, then need constantly
Reducing spacing between needlepoint electrode tip and dust layer, if produced without electric spark all the time, illustrating that dust to be measured is without sensitivity of catching fire；
2. observe and whether produce electric spark between needlepoint electrode tip and dust layer, produce without electric spark, then need constantly
Reducing spacing between needlepoint electrode tip and dust layer, until producing electric spark, then observing dust layer surface case of fire,
If dust layer surface does not occurs Ignition Phenomena under electric spark effect, illustrate that dust to be measured is without sensitivity of catching fire；
3. observe and whether produce electric spark between needlepoint electrode tip and dust layer, produce without electric spark, then need constantly
Reducing spacing between needlepoint electrode tip and dust layer, until producing electric spark, then observing dust layer surface case of fire,
If dust layer surface there occurs the Ignition Phenomena of spreading property under electric spark effect, illustrate that dust to be measured has sensitivity of catching fire；
Step 9: after dust to be measured is screened as having sensitivity of catching fire, again prepares dust layer, then dust to be measured
The sensitivity of fire sensitivity is tested；
Step 10: turn down the output energy of sparker, observes dust layer surface case of fire, if it occur that catch fire, then
Again prepare dust layer, and continue to turn down the output energy of sparker, until dust layer surface no longer catches fire, note
The output energy of sparker when last dust layer catches fire under record, this output energy is current dust thickness
Dust layer minimum ignition energy under Du；
Step 11: again prepare dust layer, gradually step up dust layer thickness, until recording the dust under different dusts layer thickness
Layer minimum ignition energy.
Beneficial effects of the present invention:
The present invention compared with prior art, effectively meets the stratiform sedimentating dust under electric spark effect and catches fire sensitivity tests, have
Imitate existing combustible dust perfect and caught fire sensitivity assessment index system, effectively compensate for existing combustible dust and catch fire sensitivity tests
The blank of standard.
Accompanying drawing explanation
Fig. 1 be the dust layer under a kind of electric spark effect of the present invention catch fire sensitivity test device (dust layer preparing processes) knot
Structure schematic diagram；
Fig. 2 be the dust layer under a kind of electric spark effect of the present invention catch fire sensitivity test device (dust layer catch fire sensitivity survey
Examination state) structural representation；
In figure, 1 base, 2 columns, 3 carry powder platform, 4 telescopic cantilever beams, 5 sparkers, 6 needle points
Electrode, 7 positioning and locking bolts, 8 drag powder dish, 9 dust layer preparation covers, and 10 dust layers prepare hole, 11 conductive contacts,
12 wires, 13 graduated scales, 14 dust layers.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, the dust layer under a kind of electric spark effect catches fire sensitivity test device, including base 1, column 2,
Carrying powder platform 3, telescopic cantilever beam 4 and sparker 5, described column 2 is vertically packed on base 1, described load powder platform
3 levels are packed on base 1, and described telescopic cantilever beam 4 is positioned at above load powder platform 3, perpendicular in telescopic cantilever beam 4 one end
Directly it is fixed with needlepoint electrode 6, and the tip of needlepoint electrode 6 is down；The other end of described telescopic cantilever beam 4 is tube-in-tube structure,
Telescopic cantilever beam 4 is set on column 2 by tube-in-tube structure, is provided with positioning and locking spiral shell between tube-in-tube structure and column 2
Bolt 7；Offer circular groove at described load powder platform 3 upper surface, be fixed with in circular groove and drag powder dish 8, and drag powder dish 8 and
The upper surface carrying powder platform 3 is in same level；It is provided above dust layer at described load powder platform 3 and prepares cover 9, at dust
Layer preparation cover 9 centers offer dust layer and prepare hole 10, are provided with conductive contact 11 carrying powder platform 3 side；Described electric spark is sent out
The positive pole of raw device 5 is connected with needlepoint electrode 6 by wire 12, and the negative pole of sparker 5 is by wire 12 and conduction
Joint 11 is connected, and conductive contact 11 is connected with carrying powder platform 3 by wire；Described base 1, column 2, carry powder platform 3 and stretching
Contracting formula cantilever beam 4 all uses insulant manufacture, described in drag powder dish 8 to use conductive material manufacture.
In order to meet the dust layer preparing different-thickness, the quantity of described dust layer preparation cover 9 is some, some dust layers preparation cover
The thickness of 9 is different.
The spacing at tip Yu dust layer upper surface in order to accurately adjust needlepoint electrode 6, is provided with quarter at described column 2 outer surface
Anale settting scale 13.
Getting an electric shock to prevent high pressure, and needlepoint electrode 6 upper end outside at described wire 12 is all coated with High-Voltage Insulation protection
Set.
In order to preferably record the dust layer ignition process during spark discharge and profiling temperatures, described electricity fire
The dust layer sensitivity test device that catches fire under flower effect is also configured with high-speed camera and infrared thermography.
In dust layer preparation process, for smooth dust layer, the described dust layer under electric spark effect catches fire sensitivity tests
Device is also configured with scraper plate, and scraper plate carries out ground connection by wire, prevent in dust layer preparation process because of fricative electrostatic or because of
Static electricity on human body and the dust layer that ignites.
In the present embodiment, the output voltage of sparker 5 inner high voltage power supply is 5kV～30kV, in sparker 5
The optional electric capacity of capacitance group is 20pF, 60pF, 200pF, 600pF, 2nF, 6nF, 20nF and 1 μ F, sparker 5
Output energy (ignition energy) be set as 1mJ, 3mJ, 10mJ, 30mJ, 100mJ, 300mJ, 1000mJ and 50J successively,
Wherein, output energy is by formula E=CU2/ 2 are calculated, and in formula, E is output energy, and C is electric capacity, and U is output voltage.
In the present embodiment, dust layer is prepared hole 10 and is used circular port, and the diameter of circular port is set to 50mm, and dust layer prepares cover 9
Preparing five altogether, the thickness of five dust layer preparation covers 9 is respectively 0.5mm, 1mm, 3mm, 5mm and 6mm, graduated scale 13
Minimum scale unit be set to 0.5mm.
Dust layer under a kind of electric spark effect catches fire sensitivity tests method, have employed the dust layer under described electric spark effect
Catch fire sensitivity test device, comprises the steps:
Step one: prepare horizontal reference platform at, is placed into test device on horizontal reference platform, it is ensured that carries powder platform 3 and locates all the time
In level；
Step 2: linked together by the positive pole of needlepoint electrode 6 with sparker 5 with a wire, with another root wire
The negative pole of conductive contact 11 with sparker 5 is linked together, and then makes the negative pole of sparker 5 and drag powder dish
8 are conducted；
Step 3: telescopic cantilever beam 4 is adjusted to retracted mode, makes needlepoint electrode 6 fall back on load powder platform 3 side, for dust
Layer preparation is prepared；
Step 4: choosing a thinnest dust layer preparation cover 9 of thickness and be placed on load powder platform 3, dust layer thickness passes through dust layer
Preparation cover 9 completes to set；
Step 5: the dust layer that dust to be measured is poured slowly into dust layer preparation cover 9 is prepared in hole 10, then utilizes ground connection scraper plate
Dust layer upper surface is struck off, then the dust being scattered around hole 10 is prepared by dust layer cleans out, finally remove dust layer and prepare
Cover 9, completes dust layer and prepares；
Step 6: telescopic cantilever beam 4 is adjusted to extended configuration, it is ensured that needlepoint electrode 6 tip is positioned at directly over dust layer；
Step 7: unclamp positioning and locking bolt 7, adjusts the telescopic cantilever beam 4 position on column 2, and then adjusts needle point
Spacing between electrode 6 tip and dust layer, sets the initial value of a spacing, finally screws location further according to graduated scale 13
Clamping screw 7；
Step 8: start sparker 5, controls sparker 5 and exports highest energy, in order to screen dust to be measured
Whether having sensitivity of catching fire, concrete condition is as follows:
1. observe and whether produce electric spark between needlepoint electrode 6 tip and dust layer, produce without electric spark, then need not
Breaking and reduce spacing between needlepoint electrode 6 tip and dust layer, if produced without electric spark all the time, illustrating that dust to be measured is quick without catching fire
Perception；
2. observe and whether produce electric spark between needlepoint electrode 6 tip and dust layer, produce without electric spark, then need not
Break and reduce spacing between needlepoint electrode 6 tip and dust layer, until producing electric spark, then observing dust layer surface and catching fire
Situation, if dust layer surface does not occurs Ignition Phenomena under electric spark effect, illustrates that dust to be measured is without sensitivity of catching fire；
3. observe and whether produce electric spark between needlepoint electrode 6 tip and dust layer, produce without electric spark, then need not
Break and reduce spacing between needlepoint electrode 6 tip and dust layer, until producing electric spark, then observing dust layer surface and catching fire
Situation, if dust layer surface there occurs the Ignition Phenomena of spreading property under electric spark effect, illustrate dust to be measured have catch fire quick
Perception；
Step 9: after dust to be measured is screened as having sensitivity of catching fire, again prepares dust layer, then dust to be measured
The sensitivity of fire sensitivity is tested；
Step 10: turn down the output energy of sparker 5, observes dust layer surface case of fire, if it occur that catch fire,
The most again prepare dust layer, and continue to turn down the output energy of sparker 5, until dust layer surface no longer catches fire,
Recording the output energy of sparker 5 when last dust layer catches fire, this output energy is current dust
Dust layer minimum ignition energy under layer thickness；
Step 11: again prepare dust layer, gradually step up dust layer thickness, until recording the dust under different dusts layer thickness
Layer minimum ignition energy.
In the present embodiment, the sensitivity of sensitivity of also catching fire dust layer has carried out grade classification, and provides varying sensitivity etc.
Safeguard procedures under Ji, concrete grade classification situation is as shown in table 1.
Table 1 dust layer catches fire the sensitivity grade table of sensitivity
Claims (7)
1. the dust layer under an electric spark effect catches fire sensitivity test device, it is characterised in that: include base, column, load
Powder platform, telescopic cantilever beam and sparker, described column is vertically packed on base, and described load powder platform level is packed in
On base, described telescopic cantilever beam is positioned at above load powder platform, is vertically fixed with needlepoint electrode in telescopic cantilever beam one end, and
The tip of needlepoint electrode is down；The other end of described telescopic cantilever beam is tube-in-tube structure, and telescopic cantilever beam passes through tube-in-tube structure
It is set on column, between tube-in-tube structure and column, is provided with positioning and locking bolt；Circle is offered at described load powder platform upper surface
Connected in star, is fixed with in circular groove and drags powder dish, and drags the upper surface of powder dish and load powder platform to be in same level；Institute
State load powder platform and be provided above dust layer preparation cover, prepare cover center at dust layer and offer dust layer and prepare hole, carrying powder platform side
Face is provided with conductive contact；The positive pole of described sparker is connected with needlepoint electrode by wire, sparker
Negative pole is connected with conductive contact by wire, and conductive contact is connected with carrying powder platform by wire；Described base, column, load powder
Platform and telescopic cantilever beam all use insulant manufacture, described in drag powder dish use conductive material manufacture.
Dust layer under a kind of electric spark effect the most according to claim 1 catches fire sensitivity test device, it is characterised in that:
The quantity of described dust layer preparation cover is some, and the thickness of some dust layers preparation cover is different.
Dust layer under a kind of electric spark effect the most according to claim 1 catches fire sensitivity test device, it is characterised in that:
Described column outer surface is provided with graduated scale.
Dust layer under a kind of electric spark effect the most according to claim 1 catches fire sensitivity test device, it is characterised in that:
And needlepoint electrode upper end outside at described wire is all coated with High-Voltage Insulation protection set.
Dust layer under a kind of electric spark effect the most according to claim 1 catches fire sensitivity test device, it is characterised in that:
The described dust layer under the electric spark effect sensitivity test device that catches fire is also configured with high-speed camera and infrared thermography.
Dust layer under a kind of electric spark effect the most according to claim 1 catches fire sensitivity test device, it is characterised in that:
The described dust layer under the electric spark effect sensitivity test device that catches fire is also configured with scraper plate, and scraper plate carries out ground connection by wire.
7. the dust layer under electric spark effect catches fire a sensitivity tests method, have employed the electric spark described in claim 1 and makees
Dust layer under with catches fire sensitivity test device, it is characterised in that comprise the steps:
Step one: prepare horizontal reference platform at, is placed into test device on horizontal reference platform, it is ensured that carries powder platform and is in all the time
Level；
Step 2: linked together by the positive pole of needlepoint electrode with sparker with a wire, will lead with another root wire
Electric connection links together with the negative pole of sparker, and then makes the negative pole of sparker be conducted with dragging powder dish；
Step 3: telescopic cantilever beam is adjusted to retracted mode, makes needlepoint electrode fall back on load powder platform side, prepares for dust layer
Prepare；
Step 4: choose a thinnest dust layer of thickness prepare cover be placed in load powder platform on, dust layer thickness is prepared by dust layer
Cover setting；
Step 5: the dust layer that dust to be measured is poured slowly into dust layer preparation cover is prepared in hole, then utilizes ground connection scraper plate by powder
Knoisphere upper surface strikes off, then dust layer is prepared the dust being scattered around hole cleans out, and finally removes dust layer preparation cover, complete
Dust layer is become to prepare；
Step 6: telescopic cantilever beam is adjusted to extended configuration, it is ensured that needlepoint electrode tip is positioned at directly over dust layer；
Step 7: unclamp positioning and locking bolt, adjusts telescopic cantilever beam position on column, and then adjusts needlepoint electrode point
Spacing between end and dust layer, sets the initial value of a spacing, finally screws positioning and locking bolt further according to graduated scale；
Step 8: start sparker, controls sparker output highest energy, in order to whether to screen dust to be measured
Having sensitivity of catching fire, concrete condition is as follows:
1. observe and whether produce electric spark between needlepoint electrode tip and dust layer, produce without electric spark, then need constantly
Reducing spacing between needlepoint electrode tip and dust layer, if produced without electric spark all the time, illustrating that dust to be measured is without sensitivity of catching fire；
2. observe and whether produce electric spark between needlepoint electrode tip and dust layer, produce without electric spark, then need constantly
Reducing spacing between needlepoint electrode tip and dust layer, until producing electric spark, then observing dust layer surface case of fire,
If dust layer surface does not occurs Ignition Phenomena under electric spark effect, illustrate that dust to be measured is without sensitivity of catching fire；
3. observe and whether produce electric spark between needlepoint electrode tip and dust layer, produce without electric spark, then need constantly
Reducing spacing between needlepoint electrode tip and dust layer, until producing electric spark, then observing dust layer surface case of fire,
If dust layer surface there occurs the Ignition Phenomena of spreading property under electric spark effect, illustrate that dust to be measured has sensitivity of catching fire；
Step 9: after dust to be measured is screened as having sensitivity of catching fire, again prepares dust layer, then dust to be measured
The sensitivity of fire sensitivity is tested；
Step 10: turn down the output energy of sparker, observes dust layer surface case of fire, if it occur that catch fire, then
Again prepare dust layer, and continue to turn down the output energy of sparker, until dust layer surface no longer catches fire, note
The output energy of sparker when last dust layer catches fire under record, this output energy is current dust thickness
Dust layer minimum ignition energy under Du；
Step 11: again prepare dust layer, gradually step up dust layer thickness, until recording the dust under different dusts layer thickness
Layer minimum ignition energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610504939.0A CN105891254B (en) | 2016-06-30 | 2016-06-30 | Dust layer under a kind of effect of electric spark catches fire sensitivity test device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610504939.0A CN105891254B (en) | 2016-06-30 | 2016-06-30 | Dust layer under a kind of effect of electric spark catches fire sensitivity test device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105891254A true CN105891254A (en) | 2016-08-24 |
| CN105891254B CN105891254B (en) | 2018-06-26 |
Family
ID=56718578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610504939.0A Expired - Fee Related CN105891254B (en) | 2016-06-30 | 2016-06-30 | Dust layer under a kind of effect of electric spark catches fire sensitivity test device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105891254B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576753A (en) * | 2017-09-18 | 2018-01-12 | 东北大学 | Surface angle the test device and method of Spread Characteristics affecting laws to dust layer |
| CN108627608A (en) * | 2018-03-28 | 2018-10-09 | 东北大学 | Ignition of flammable vapour sensibility tubular type test device and test method under flow regime |
| CN108918355A (en) * | 2018-05-04 | 2018-11-30 | 北京石油化工学院 | A kind of appraisal procedure of low density polyethylene (LDPE) smashed district responsive parameter |
| 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 |
| CN114414625A (en) * | 2022-01-25 | 2022-04-29 | 东北大学 | Testing device and method for evaluating influence of moisture content on dust bed fire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201397312Y (en) * | 2009-04-17 | 2010-02-03 | 煤炭科学研究总院重庆研究院 | Coal dust explosion digital detecting system |
| CN104749208A (en) * | 2015-04-20 | 2015-07-01 | 国家安全生产监督管理总局化学品登记中心 | Testing method for lowest ignition temperature of dust cloud |
| CN104749218A (en) * | 2015-03-27 | 2015-07-01 | 中国石油大学(华东) | Device and method for testing explosion properties of flammable gases at ultralow temperature |
| US20150330631A1 (en) * | 2014-05-15 | 2015-11-19 | Tokyo Electron Limited | Method for preventing explosion of exhaust gas in decompression processing apparatus |
| JP2016061665A (en) * | 2014-09-18 | 2016-04-25 | 大陽日酸株式会社 | Liquefaction container for low temperature liquefied gas combustion/explosion test |
| CN205192996U (en) * | 2015-12-08 | 2016-04-27 | 湖北航天化学技术研究所 | Dust is igniteed can testing arrangement |
-
2016
- 2016-06-30 CN CN201610504939.0A patent/CN105891254B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201397312Y (en) * | 2009-04-17 | 2010-02-03 | 煤炭科学研究总院重庆研究院 | Coal dust explosion digital detecting system |
| US20150330631A1 (en) * | 2014-05-15 | 2015-11-19 | Tokyo Electron Limited | Method for preventing explosion of exhaust gas in decompression processing apparatus |
| JP2016061665A (en) * | 2014-09-18 | 2016-04-25 | 大陽日酸株式会社 | Liquefaction container for low temperature liquefied gas combustion/explosion test |
| CN104749218A (en) * | 2015-03-27 | 2015-07-01 | 中国石油大学(华东) | Device and method for testing explosion properties of flammable gases at ultralow temperature |
| CN104749208A (en) * | 2015-04-20 | 2015-07-01 | 国家安全生产监督管理总局化学品登记中心 | Testing method for lowest ignition temperature of dust cloud |
| CN205192996U (en) * | 2015-12-08 | 2016-04-27 | 湖北航天化学技术研究所 | Dust is igniteed can testing arrangement |
Non-Patent Citations (4)
| Title |
|---|
| M POLKA ET AL.: "Experimental Analysis of Minimal Ignition Temperatures of a Dust Layer and Clouds on a Heated Surface of Selected Flammable Dusts", 《PROCEDIA ENGINEERING》 * |
| R. K. ECKHOFF: "Understanding dust explosions. The role of powder science and technology", 《JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES》 * |
| 王海福等: "《防爆学原理》", 30 September 2004, 北京：北京理工大学出版社 * |
| 钟英鹏等: "镁粉尘云最低着火温度的实验测试", 《爆炸与冲击》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576753A (en) * | 2017-09-18 | 2018-01-12 | 东北大学 | Surface angle the test device and method of Spread Characteristics affecting laws to dust layer |
| CN108627608A (en) * | 2018-03-28 | 2018-10-09 | 东北大学 | Ignition of flammable vapour sensibility tubular type test device and test method under flow regime |
| CN108918355A (en) * | 2018-05-04 | 2018-11-30 | 北京石油化工学院 | A kind of appraisal procedure of low density polyethylene (LDPE) smashed district responsive parameter |
| CN108918355B (en) * | 2018-05-04 | 2020-10-27 | 北京石油化工学院 | Method for evaluating explosion sensitivity parameters of low-density polyethylene powder |
| 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 |
| CN114414625A (en) * | 2022-01-25 | 2022-04-29 | 东北大学 | Testing device and method for evaluating influence of moisture content on dust bed fire |
| CN114414625B (en) * | 2022-01-25 | 2023-10-31 | 东北大学 | Testing device and method for evaluating influence of moisture content on dust layer fire disaster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105891254B (en) | 2018-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105891254A (en) | Dust-layer ignition sensitivity testing device and method under action of electric sparks | |
| CN109342897B (en) | Small mountain fire-induced high-voltage transmission line flashover discharge and early warning simulation device thereof | |
| Qi et al. | Partial discharge initiated by free moving metallic particles on GIS insulator surface: severity diagnosis and assessment | |
| CN105021492A (en) | Apparatus for testing cable heating and combustion characteristics under effect of simulating fault arc | |
| CN105181748A (en) | Test device for thermal properties and failure of cable under action of external radiation heat flows | |
| CN104360245A (en) | Gap discharge characteristic test platform influenced by multiple factors under simulated mountain fire condition | |
| CN109239549B (en) | Test device capable of decoupling interaction of power transmission line and forest fire and use method | |
| CN101236226A (en) | Ultrahigh voltage transmission lines hardware corona test method based on ultraviolet imagery technology | |
| CN107576753A (en) | Surface angle the test device and method of Spread Characteristics affecting laws to dust layer | |
| CN108828384B (en) | Simulation device and simulation method for internal short circuit of battery | |
| CN103869258B (en) | A kind of sodium-sulphur battery batch inspection system | |
| CN103901329B (en) | Method for determining corona discharge ultraviolet detection sensitivity of high-voltage electrical equipment | |
| CN109064867B (en) | Fire response characteristic and physicochemical property damage experiment platform for high-voltage transmission line | |
| CN113625089A (en) | Fault arc ignition experimental device and experimental method thereof | |
| CN208026830U (en) | A kind of device in X -ray inspection X spark plug proof voltage energy | |
| CN204299767U (en) | For the Auto-Test System of aero-engine ignition system | |
| CN205861590U (en) | Electrodes of lithium-ion batteries thermal conductivity consistency detection device | |
| Yang et al. | Experimental study of tree ground fault discharge characteristics of 35 kV transmission lines | |
| CN205353276U (en) | Testing system of oily handstand formula CT end screen imperfect earth trouble of simulation | |
| CN106198618B (en) | Electrodes of lithium-ion batteries thermal conductivity consistency detection device and method | |
| CN109490654A (en) | A kind of multilayer FSS screen thunder and lightning coupling effect experimental rig and test method | |
| CN108120914A (en) | A kind of method and apparatus being used in X -ray inspection X spark plug proof voltage energy | |
| CN205810488U (en) | Extra-high voltage direct current composite post insulator anti-seismic test sample | |
| CN115078857A (en) | Isothermal current attenuation method based solid insulation material surface charge measurement system under high frequency and high pressure | |
| Yongxiang et al. | Detection and analysis of high voltage electrical equipment corona discharge based on ultraviolet imaging technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |