CN206431077U - A kind of large scale pipeline powder coal weak ignition explosive test system - Google Patents
A kind of large scale pipeline powder coal weak ignition explosive test system Download PDFInfo
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- CN206431077U CN206431077U CN201720143859.7U CN201720143859U CN206431077U CN 206431077 U CN206431077 U CN 206431077U CN 201720143859 U CN201720143859 U CN 201720143859U CN 206431077 U CN206431077 U CN 206431077U
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- dust
- pipeline
- large scale
- test
- hydraulic test
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Abstract
The utility model discloses a kind of large scale pipeline powder coal weak ignition explosive test system, including venting of dust explosion tank and hydraulic test pipeline；The wind-borne dust device that dusts, igniter, ventilating dust-arrester, vacuum extractor, test device and controller are connected with hydraulic test pipeline；The wind-borne dust device, igniter, the test device of dusting are connected with controller；Dust and air compressor is connected with the wind-borne dust device, the output channel of air compressor is provided with oil water separator；Hydraulic test pipeline both sides outer wall is provided with some mounting holes, and the upper surface of hydraulic test pipeline, which is provided with instrument connection, instrument connection, is provided with sensor.The utility model is simple in construction, ingenious in design, is worth with higher experiment.
Description
Technical field
The utility model is related to dust explosion experimental provision, and in particular to a kind of large scale pipeline powder coal weak ignition blast examination
Check system.
Background technology
Dust explosion, refers to dust in the range of explosion limit, runs into thermal source（Naked light or temperature）, flame moment propagated in whole
Individual mixed dust space, chemical reaction velocity is exceedingly fast, while discharging substantial amounts of heat, bears very high temperature and very big pressure,
The energy of system is converted into the radiation of mechanical work and light and heat, with very strong destructive power.And coal dust explosion is to threaten boiler
Room personnel's personal safety and the main contributor of equipment loss.And existing coal dust pipe explosion experimental rig is mainly characterized by pipeline chi
Very little internal diameter is in 100mm or so, and size is smaller, and ignition intensity is big（More than 10kJ chemical point burning things which may cause a fire disaster）, coal dust cloud is difficult to be formed, dust
Cloud Density Distribution is uneven, not reproducible etc., and experimental data is inaccurate, and realistic simulation effect is not good, is unfavorable for actual tunnel quick-fried
The research of fried situation.
Utility model content
For the deficiency in above-mentioned background technology, the utility model explodes there is provided a kind of large scale pipeline powder coal weak ignition
Pilot system, to solve that pipeline in the prior art is small, test accuracy is low, the repeatable technical problem such as strong.
The technical solution of the utility model is：A kind of large scale pipeline powder coal weak ignition explosive test system, including venting of dust explosion
Tank and hydraulic test pipeline；The wind-borne dust device that dusts, igniter are connected with hydraulic test pipeline, ventilating dust-arrester, takes out true
Empty device, test device and controller；The wind-borne dust device, igniter, the test device of dusting are connected with controller；Dust and raise
Air compressor is connected with dirt device, the output channel of air compressor is provided with oil water separator；Hydraulic test pipeline two
Side outer wall is provided with mounting hole, and the upper surface of hydraulic test pipeline, which is provided with instrument connection, instrument connection, is provided with sensor.
The wind-borne dust device that dusts includes shower nozzle, powder room, plenum chamber；Shower nozzle is arranged on the output end of powder room, high pressure gas
Room is arranged on the input of powder room, and check valve is provided between shower nozzle and powder room, and magnetic valve is provided between plenum chamber and powder room, high
The input of plenum chamber is provided with manually-operated gate, and manually-operated gate is connected with air compressor.
The shower nozzle is hollow hemispheric and is arranged in mounting hole；Airborne dust hole is evenly distributed with shower nozzle.
124 airborne dust holes are uniformly distributed on the shower nozzle, 124 airborne dust holes constitute the different concentric circles of six radiuses；Raise
A diameter of 1.0 ~ 1.6mm in dirt hole.
One end of the hydraulic test pipeline is provided with fire hole, igniting dress by flangeseal, the center of ring flange
Put and be connected by fire hole with hydraulic test pipeline；The other end of hydraulic test pipeline is connected with venting of dust explosion tank, hydraulic test
Venting of dust explosion film is provided between pipeline and venting of dust explosion tank.
The length of the hydraulic test pipeline is 30 ~ 40m；The internal diameter of hydraulic test pipeline is 200 ~ 300mm.
The both sides of the hydraulic test pipeline are altogether provided with 18 independent the wind-borne dust devices that dust.
The sensor includes pressure sensor and temperature sensor.
The utility model is dusted the wind-borne dust device using large-diameter pipeline multiple spot, blast Dust Concentration is evenly distributed, coal amount
Controllable, test explosive parameters are actual closer to tunnel blast, while because interior caliber size is big, coal dust cloud easily forms and reaches blast
Concentration, can be put quick-fried using weak ignition energy, it is to avoid the problems such as the formula test of the chemical incendiary source of big energy, decreased and adopted
Collect error of the data caused by ignition energy is big.Using this invention device, coal dust-air mixture is not only solved in weakness
Fire（40J）Under the conditions of combustion explosion the problem of be difficult to realize, and test accuracy is high, and repeatability is strong, for research pipeline
Simulate tunnel detonation propagation and provide new method and approach.The utility model is simple in construction, ingenious in design, with higher examination
Test value.
Brief description of the drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the utility model shower nozzle schematic diagram.
Embodiment
Embodiment 1：As shown in Figure 1-2, a kind of large scale pipeline powder coal weak ignition explosive test system, including venting of dust explosion tank 1
With hydraulic test pipeline 16；Be connected with hydraulic test pipeline 16 the wind-borne dust device that dusts, igniter 5, ventilating dust-arrester 4,
Vacuum extractor 3, test device 7 and controller 6；The wind-borne dust device, igniter 5, the test device 7 of dusting with the phase of controller 6
Connection；Ventilating dust-arrester 4 mainly after each experiment is finished, removes the product and unreacted dust in pipeline.Take out true
Empty device 3 is vavuum pump, for taking out certain vacuum, vacuum meter 0~0.1MPa of range, to ensure in advance to pipeline before the test
When the wind-borne dust device that dusted in process of the test is ejected into horizontal pipe by high pressure draught entrainment of dust, the pressure in pipe is normal
Pressure condition.Dust and air compressor 2 is connected with the wind-borne dust device, the output channel of air compressor 2 is provided with oil water separator
19；Oil water separator removes the moisture in air in the course of conveying of compressed air, is dry air with ensure conveying, together
When avoid being mixed into impurity in compressed air the electrical parts such as magnetic valve caused damage.The both sides outer wall of hydraulic test pipeline 16 is provided with
Some mounting holes 17, the upper surface of hydraulic test pipeline 16, which is provided with instrument connection 18, instrument connection 18, is provided with sensor 20.Control
Device 6 includes delayed injection controller and firing delay controller two parts, for controlling magnetic valve to open, light a fire and triggering
Dynamic Data Acquiring analysis system start recording.Test device 7 is by pressure sensor, sensor adapter, the high quick-actions of TST6300
State tester Dynamic Data Acquiring analysis system is constituted, and mainly coal dust-air mixture blast pressure, flame ripple etc. are exploded and joined
Number communication process carries out experimental test research.
Further preferably, the wind-borne dust device that dusts includes shower nozzle 21, powder room 9, plenum chamber 11；Shower nozzle 21 is arranged on powder room 9
Output end, plenum chamber 11 be arranged on powder room 9 input, between shower nozzle 21 and powder room 9 be provided with check valve 13, plenum chamber
Magnetic valve 10 is provided between 11 and powder room 9, the input of plenum chamber 11 is provided with manually-operated gate 12, manually-operated gate 12 and air pressure
Contracting machine 2 is connected.
Further preferably, shower nozzle 21 is hollow hemispheric and is arranged in mounting hole 17；It is evenly distributed with and raises on shower nozzle 21
Dirt hole 22.
Further preferably, 124 airborne dust holes are uniformly distributed on shower nozzle 21, it is different that 124 airborne dust holes constitute six radiuses
Concentric circles, is axially and radially evenly distributed with the dust cloud concentration ensured in hydraulic test pipeline along pipeline；Airborne dust hole 22 it is straight
Footpath is 1.0 ~ 1.6mm.
Further preferably, one end of hydraulic test pipeline 16 is sealed by ring flange 15, and the center of ring flange 15 is provided with
Fire hole, igniter 5 is connected by fire hole with hydraulic test pipeline 16；The other end and venting of dust explosion of hydraulic test pipeline 16
Tank 1 is connected, and venting of dust explosion film is provided between hydraulic test pipeline 16 and venting of dust explosion tank 1.
Further preferably, the length of hydraulic test pipeline 16 is 30 ~ 40m；The internal diameter of hydraulic test pipeline 16 be 200 ~
300mm。
Further preferably, the both sides of hydraulic test pipeline 16 are altogether provided with 18 independent the wind-borne dust devices that dust.
Further preferably, the ignition energy that igniter 5 is exported is 40J.
Further preferably, sensor 20 includes pressure sensor and temperature sensor, for measuring pressure and flare up fire,
Blast wave is obtained along the pressure at different measuring points during pipe transmmision, flame, temperature and time course curve.
The course of work：Step one, install and dust the wind-borne dust device and close check valve 13, coal dust is fitted into powder room 9, install
Venting of dust explosion film 8, connection air compressor 2, vacuum extractor 3, dust arrester 4, igniter 5, control system 6 and test device
7, close hand-operated valve 12, inspection system air-tightness；Ensure after system air-tightness, open hand-operated valve 12, close check valve 13；Then
Start vacuum extractor and hydraulic test pipeline inner air pressure is evacuated to 0.03-0.06MPa；
Step 2, opens and starts air compressor 2 pressure-air press-in plenum chamber 11, be then shut off hand-operated valve
12, check valve 13 is opened, while starting control system 6, test device 7 and igniter 5, is gathered and automatic record data；
Step 3, closes check valve 13, starts dust arrester 4 until reaching test requirements document in pipeline.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.
Claims (8)
1. a kind of large scale pipeline powder coal weak ignition explosive test system, it is characterised in that：Including venting of dust explosion tank（1）And hydraulic test
Pipeline（16）；Hydraulic test pipeline（16）On be connected with the wind-borne dust device that dusts, igniter（5）, ventilating dust-arrester（4）, take out
Vacuum plant（3）, test device（7）And controller（6）；Dust the wind-borne dust device, igniter（5）, test device（7）With control
Device processed（6）It is connected；Dust and be connected with air compressor on the wind-borne dust device（2）, air compressor（2）Output channel be provided with
Oil water separator（19）；Hydraulic test pipeline（16）Both sides outer wall is provided with mounting hole（17）, hydraulic test pipeline（16）It is upper
Surface is provided with instrument connection（18）, instrument connection（18）It is interior to be provided with sensor（20）.
2. large scale pipeline powder coal weak ignition explosive test system according to claim 1, it is characterised in that：It is described to dust
The wind-borne dust device includes shower nozzle（21）, powder room（9）, plenum chamber（11）；Shower nozzle（21）Installed in powder room（9）Output end, high pressure
Air chamber（11）Installed in powder room（9）Input, shower nozzle（21）With powder room（9）Between be provided with check valve（13）, plenum chamber
（11）With powder room（9）Between be provided with magnetic valve（10）, plenum chamber（11）Input be provided with manually-operated gate（12）, manually-operated gate
（12）With air compressor（2）It is connected.
3. large scale pipeline powder coal weak ignition explosive test system according to claim 2, it is characterised in that：The shower nozzle
（21）For hollow hemispheric and installed in mounting hole（17）It is interior；Shower nozzle（21）On be evenly distributed with airborne dust hole（22）.
4. large scale pipeline powder coal weak ignition explosive test system according to claim 3, it is characterised in that：The shower nozzle
（21）On be uniformly distributed 124 airborne dust holes, 124 airborne dust holes constitute the different concentric circles of six radiuses；Airborne dust hole（22）It is straight
Footpath is 1.0 ~ 1.6mm.
5. large scale pipeline powder coal weak ignition explosive test system according to claim 1, it is characterised in that：The level
Test pipe（16）One end by ring flange（15）Sealing, ring flange（15）Center be provided with fire hole, igniter（5）
Pass through fire hole and hydraulic test pipeline（16）It is connected；Hydraulic test pipeline（16）The other end and venting of dust explosion tank（1）It is connected,
Hydraulic test pipeline（16）With venting of dust explosion tank（1）Between be provided with venting of dust explosion film.
6. large scale pipeline powder coal weak ignition explosive test system according to claim 5, it is characterised in that：The level
Test pipe（16）Length be 30 ~ 40m；Hydraulic test pipeline（16）Internal diameter be 200 ~ 300mm.
7. the large scale pipeline powder coal weak ignition explosive test system according to claim 1 or 5 or 6, it is characterised in that：Institute
State hydraulic test pipeline（16）Both sides altogether provided with 18 independent the wind-borne dust devices that dust.
8. large scale pipeline powder coal weak ignition explosive test system according to claim 1, it is characterised in that：The sensing
Device（20）Including pressure sensor and temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143859.7U CN206431077U (en) | 2017-02-17 | 2017-02-17 | A kind of large scale pipeline powder coal weak ignition explosive test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720143859.7U CN206431077U (en) | 2017-02-17 | 2017-02-17 | A kind of large scale pipeline powder coal weak ignition explosive test system |
Publications (1)
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| CN206431077U true CN206431077U (en) | 2017-08-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720143859.7U Expired - Fee Related CN206431077U (en) | 2017-02-17 | 2017-02-17 | A kind of large scale pipeline powder coal weak ignition explosive test system |
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| CN (1) | CN206431077U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535446A (en) * | 2018-04-19 | 2018-09-14 | 河南工程学院 | Pipeline gas explosion causes the experimental provision and method that deposit coal dust subsequent explosion |
| CN111879819A (en) * | 2020-07-31 | 2020-11-03 | 上海化工研究院有限公司 | Closed-loop circulating type volatile liquid explosion limit measuring device |
| CN113888947A (en) * | 2021-08-31 | 2022-01-04 | 中国人民解放军陆军工程大学 | Large-equivalent underground multipoint aggregation explosive bomb pit effect simulation device and method |
-
2017
- 2017-02-17 CN CN201720143859.7U patent/CN206431077U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535446A (en) * | 2018-04-19 | 2018-09-14 | 河南工程学院 | Pipeline gas explosion causes the experimental provision and method that deposit coal dust subsequent explosion |
| CN108535446B (en) * | 2018-04-19 | 2023-08-22 | 河南工程学院 | Experimental device and method for secondary explosion of deposited coal dust caused by gas explosion of pipeline |
| CN111879819A (en) * | 2020-07-31 | 2020-11-03 | 上海化工研究院有限公司 | Closed-loop circulating type volatile liquid explosion limit measuring device |
| CN113888947A (en) * | 2021-08-31 | 2022-01-04 | 中国人民解放军陆军工程大学 | Large-equivalent underground multipoint aggregation explosive bomb pit effect simulation device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170822 Termination date: 20180217 |