CN201449389U - Air mixture explosion testing device - Google Patents
Air mixture explosion testing device Download PDFInfo
- Publication number
- CN201449389U CN201449389U CN 200920033142 CN200920033142U CN201449389U CN 201449389 U CN201449389 U CN 201449389U CN 200920033142 CN200920033142 CN 200920033142 CN 200920033142 U CN200920033142 U CN 200920033142U CN 201449389 U CN201449389 U CN 201449389U
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- jar
- explosion
- air mixture
- explosion jar
- pressure
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
An air mixture explosion testing device comprises a flow meter 9, wherein the flow meter 9 is communicated with the bottom of an explosion jar 11, a solenoid valve 7 is arranged between the flow meter 9 and the explosion jar 11, one side of the explosion jar 11 is provided with a thermocouple 6, the mainbody of the explosion jar 11 is provided with a heating ring 3; the top of the explosion jar 11 is provided with an anti-explosion hole 4, an igniter 12 and a pressure measuring hole 5; and an electrode 2 of a high-pressure variable pressure rectifier 1 extends into the top of the inner cavity of the explosion jar 11. Coal dust 8 is added to the bottom of the explosion jar 11, the solenoid valve 7 is opened simultaneously, compressed air with certain pressure and temperature is introduced into the explosion jar 11, and the coal dust in the explosion jar 11 is ignited, and then the pressure and temperature in the explosion jar are raised instantly; therefore, the air mixture explosion testing device has the characteristics of simple, convenient and fast testing conditions.
Description
Technical field
The utility model relates to a kind of test unit, particularly a kind of air mixture explosive test device.
Background technology
In design in the past, generally adopt the volatilization of coal to assign to judge the explosion property of coal, in fact this method has bigger limitation and uncertainty.Along with the development of coal characteristic analytical technology and means of testing, existing index such as thermogravimetric analysis index and breeze airflow ignition temperature index, these characterisitic parameters can reflect the explosion property of coal dust to a certain extent." the explosion-proof designing technique rules of fuel-burning power plant coal and pulverized coal preparation system " of the new establishment of China are also with the index of these characterisitic parameters as the coal dust explosion difficulty or ease.
Show according to related data, the explosion equipment similar to this coal dust explosion device also arranged, its ultimate principle is also similar with this testing table: the pressurized air of certain volume and certain pressure feeds in the blast jar (20L) by the coal dust sample of solenoid valve with certain mass, make it in jar, form the dust cloud of certain mass concentration, the play-by-play of its whole device is not seen in coal dust cloud point combustion ignition in will explode jar with the chemical point burning things which may cause a fire disaster of 10kJ simultaneously.
Existing its test unit of coal dust explosion device and test condition are mainly considered the coal dust cloud, be the mine leading indicator, according to the test findings in the report, also an explosion occurred for difficult quick-fried meager coal, different with the actual reflection result of power plant, and the major equipment of this testing table design and test condition mainly consider to adopt the similar condition of coal dust explosion to power plant's reality, so its test findings has more directive significance to power plant's explosion of Coal Pulverizing System characteristic.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of air mixture explosive test device is provided, have test condition simply, characteristics easily and efficiently.
To achieve these goals, the technology Fang An that the utility model adopts is: a kind of air mixture explosive test device, include a flowmeter 9, flowmeter 9 is connected with blast jar 11 bottoms, be provided with solenoid valve 7 between flowmeter 9 and the blast jar 11, blast jar 11 1 sides are provided with thermopair 6, and blast jar 11 main bodys are provided with heating collar 3, the top of blast jar 11 is provided with explosionproof hole 4, lighter 12 and pressure tap 5, and the electrode 2 of high pressure vertoro 1 is the interior top of chamber of blast jar 11 deeply.
Described blast jar 11 bottom loaded coal dusts 8.
The utlity model has following advantage:
The first, the coal powder/air mixture temperature is adjustable, can reach the temperature (in 200 ℃) of power plant's nearly all pulverized coal preparation system outlet wind powder mixture;
The second, coal powder/air mixture concentration, oxygen content, fineness of pulverized coal is adjustable;
The 3rd, ignition energy is adjustable in 5～40J scope;
The 4th, can test out the transient change value of temperature, pressure, determine bursting strength.
So the utility model more can reflect the explosive characteristics of coal in power plant truly, have test condition simply, characteristics easily and efficiently.
Description of drawings
Accompanying drawing is an one-piece construction synoptic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to accompanying drawing, a kind of air mixture explosive test device, include a flowmeter 9, flowmeter 9 controls enter the air pressure and the flow of blast jar, flowmeter 9 is connected with blast jar 11 bottoms, be provided with solenoid valve 7 between flowmeter 9 and the blast jar 11, solenoid valve 7 is used for opening or closing the pressurized air 10 that enters in the blast jar 11, blast jar 11 bottom loaded coal dusts 8, blast jar 11 1 sides are provided with thermopair 6, blast jar 11 main bodys are provided with heating collar 3, heating collar 3 is used for controlling the temperature in the blast jar 11, and the top of blast jar 11 is provided with explosionproof hole 4, lighter 12 and pressure tap 5, the electrode 2 of high pressure vertoro 1 is the interior top of chamber of blast jar 11 deeply, lighter 12 is used for igniting the coal dust in the blast jar 11, electrode 2, thermopair 6 and high-pressure frequency conversion rectifier device 1 are measured blast jar interior temperature and pressure numerical value.
Principle of work of the present utility model is:
Open solenoid valve 7, pressurized air 10 enters in the blast jar 11 by flowmeter 9, and jar 11 an interior air and the compressed-air actuated pressure and temperatures that will explode simultaneously are controlled at certain numerical value.When above-mentioned controlled condition reaches required value, coal dust 8 is added blast jar 11 bottoms, open solenoid valve 7 simultaneously, the pressurized air of certain pressure and temperature is fed blast jar 11, and firing point firearm 12,11 coal dust in the ignition blast jar, jar temperature of interior pressure of exploding this moment raise in moment.Measure temperature and pressure numerical value in the blast jars 11 by electrode 2, thermopair 6 and high-pressure frequency conversion rectifier device 1, and data are shown with digital signal.
Claims (4)
1. air mixture explosive test device, it is characterized in that, include a flowmeter (9), flowmeter (9) is connected with blast jar (a 11) bottom, be provided with solenoid valve (7) between flowmeter (9) and the blast jar (11), blast jar (a 11) main body is provided with heating collar (3), and the top of blast jar (11) is provided with lighter (12) and pressure tap (5), and the electrode (2) of high pressure vertoro (1) is the interior top of chamber of blast jar (11) deeply.
2. a kind of air mixture explosive test device according to claim 1 is characterized in that, described blast jar (11) bottom loaded coal dust (8).
3. a kind of air mixture explosive test device according to claim 1 is characterized in that, blast jar (11) one sides are provided with thermopair (6).
4. a kind of air mixture explosive test device according to claim 1 is characterized in that, the top of blast jar (11) is provided with explosionproof hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920033142 CN201449389U (en) | 2009-05-14 | 2009-05-14 | Air mixture explosion testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920033142 CN201449389U (en) | 2009-05-14 | 2009-05-14 | Air mixture explosion testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201449389U true CN201449389U (en) | 2010-05-05 |
Family
ID=42554110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920033142 Expired - Fee Related CN201449389U (en) | 2009-05-14 | 2009-05-14 | Air mixture explosion testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201449389U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930770A (en) * | 2012-10-12 | 2013-02-13 | 浙江工业大学 | Shock tube type combustible gas explosion experiment device |
| CN103743781A (en) * | 2013-09-17 | 2014-04-23 | 中国神华能源股份有限公司 | Method for calculating explosion lower-limit heat concentration of coal dust |
| CN103792331A (en) * | 2012-10-30 | 2014-05-14 | 中国石油化工股份有限公司 | Simulation detection system for explosion of underground storage gasoline tank in automobile gasoline filling station |
| CN104181199A (en) * | 2014-08-05 | 2014-12-03 | 中国人民武装警察部队学院 | Ignition energy variable completely-transparent pipeline gas explosion experiment platform and method |
| CN104897305A (en) * | 2015-05-12 | 2015-09-09 | 清华大学 | Electric spark ignition energy calibration system under high pressure and method thereof |
| CN116298178A (en) * | 2023-03-29 | 2023-06-23 | 北京航天试验技术研究所 | Energetic material testing system and method |
-
2009
- 2009-05-14 CN CN 200920033142 patent/CN201449389U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102930770A (en) * | 2012-10-12 | 2013-02-13 | 浙江工业大学 | Shock tube type combustible gas explosion experiment device |
| CN103792331A (en) * | 2012-10-30 | 2014-05-14 | 中国石油化工股份有限公司 | Simulation detection system for explosion of underground storage gasoline tank in automobile gasoline filling station |
| CN103743781A (en) * | 2013-09-17 | 2014-04-23 | 中国神华能源股份有限公司 | Method for calculating explosion lower-limit heat concentration of coal dust |
| CN104181199A (en) * | 2014-08-05 | 2014-12-03 | 中国人民武装警察部队学院 | Ignition energy variable completely-transparent pipeline gas explosion experiment platform and method |
| CN104897305A (en) * | 2015-05-12 | 2015-09-09 | 清华大学 | Electric spark ignition energy calibration system under high pressure and method thereof |
| CN104897305B (en) * | 2015-05-12 | 2017-05-24 | 清华大学 | Electric spark ignition energy calibration system under high pressure and method thereof |
| CN116298178A (en) * | 2023-03-29 | 2023-06-23 | 北京航天试验技术研究所 | Energetic material testing system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20150514 |
|
| EXPY | Termination of patent right or utility model |