CN102930770A - Shock tube type combustible gas explosion experiment device - Google Patents
Shock tube type combustible gas explosion experiment device Download PDFInfo
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- CN102930770A CN102930770A CN2012103866810A CN201210386681A CN102930770A CN 102930770 A CN102930770 A CN 102930770A CN 2012103866810 A CN2012103866810 A CN 2012103866810A CN 201210386681 A CN201210386681 A CN 201210386681A CN 102930770 A CN102930770 A CN 102930770A
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Abstract
The invention discloses a shock tube type combustible gas explosion experiment device. The device comprises a tubular explosion test barrel, wherein the explosion test barrel is transversely arranged on a bracket; an opening and an explosion-proof membrane for sealing the opening are arranged at the front end of the explosion test barrel; the explosion test barrel is connected with a gas supply device for injecting normal-temperature normal-pressure combustible gas into an inner cavity of the barrel; the explosion test barrel is provided with a pressure sensor for sensing pressure in the barrel, a monitor for monitoring gas concentration in the barrel and an igniter for igniting gas in the barrel; the pressure sensor is connected with a display module for displaying a pressure value in the barrel; and the rear end of the explosion test barrel is sealed. The device disclosed by the invention is simple to operate and low in cost, and can replay the flame state at the moment of explosion and display the pressure change in the explosion barrel and the explosion sound.
Description
Technical field
The present invention relates to a kind of shock wave tubular type flammable gas explosion experimental provision.
Background technology
In the National Program for Medium-to Long-term Scientific and Technological Development (2006-2020), will " great industrial accident prevention and control and rescue technology and the relevant devices such as exploitation burning, blast, Toxicant Leak " classify as and first develop one of theme in the public safety.In industrial processes, Chemical Manufacture enterprise particularly, inflammable gas is widely used, in storage, transportation and use procedure to inflammable gas, inflammable gas often occurs and mix the fire explosion that causes with air, brought immeasurable loss to people's lives and properties.Therefore, further investigation gas burst characteristic for the accident that Control and prevention causes thus, seems extremely necessary.
Shock wave tubular type flammable gas explosion experimental provision is comprised of three parts, the one, with flammable gas explosion pipe and the support of organic glass making, the 2nd, the Camcording system of the phenomenon that instant of detonation occurs, the 3rd, the collection of the relevant data of flammable gas explosion process and processing.At present, general Exploding test system is the spherical Exploding test of 20L system in the world, the explosive parameter of this device energy test dust and gas, can survey gas maximum explosion pressure, maximum explosion pressure climbing speed, gas explosion limit, meet ISO 6184/1-1985, ASTM E20191:1986, the standards such as Britain BS6713:Part and PREN 14034:Parts 1,2.But this device acquisition price is very high, reach more than 90 ten thousand yuan, and can not show the phenomenon that gas explosion process shock wave (flame) changes, can not record and playback, only be suitable for scientific research institution and be not suitable for the teaching research of colleges and universities, the teaching fund of general colleges and universities can not satisfy the requirement that this project drops into.
The experimental provision that is used at present dust and flammable gas explosion, such as the spherical explosion experimental facility of 20L etc., its major defect is high to the airtight degree requirement of spheroid, the running program more complicated, device costliness and operating cost are high, in addition, because the flame ejiction opening of spherical explosion testing device is very little, can only observe the situation of instant of detonation flame ejection, and after can't observing the consumption of tube inner chamber inflammable gas, pressure and reducing, the situation of flame rollback.Exist many deficiencies at the aspects such as parameter record, display effect of blast etc., therefore using has larger limitation, and application is less in the tutoring systems such as colleges and universities.
Summary of the invention
In order to overcome existing gas explosion the leakproofness of testing apparatus is required height, running program is complicated, the shortcomings such as non-visuality and processing charges are high, the invention provides a kind of simple to operate, the shock wave tubular type flammable gas explosion experimental provision that under the normal temperature and pressure state, operates that blast process is visual, expense is cheap.
The technical solution used in the present invention is:
Shock wave tubular type flammable gas explosion experimental provision, comprise tubulose Exploding test cylinder, described Exploding test cylinder transverse strands is located on the support, the front opening of described Exploding test cylinder and be provided with blow-out disc with opening sealing, described Exploding test cylinder is connected with a feeder that injects the inflammable gas of normal temperature and pressure to tube inner chamber, described Exploding test cylinder is provided with the pressure transducer of induction cylinder pressure, the monitor of gas concentration in the monitoring cylinder, light the lighter of an interior gas, described pressure transducer is connected with the display module of display barrel internal pressure value, it is characterized in that: the back-end sealing of described Exploding test cylinder.
Further, described pressure transducer has three, is arranged at respectively front end, middle-end and the back-end location of described Exploding test cylinder.
Further, video camera, the record explosive flame that is provided with record blast state evolution around the described Exploding test cylinder go out the tubulose attitude camera and the sound meter of the record blast sound.
Further, the place ahead of the front opening of described Exploding test cylinder is provided with the anti-shock baffle of the impact of barrier gas explosion time generation.
Further, the air intake opening of described Exploding test cylinder is provided with the flowmeter that can directly show data.
Further, described Exploding test cylinder is the plexi-glass tubular of a cylindrical seamless, and the rear end is sealed with circular poly (methyl methacrylate) plate, plexi-glass tubular front end first flange that bonds, and described blow-out disc is fixed in the opening part of plexi-glass tubular by the second flange.
Technical conceive of the present invention is: first with flange fixedly blow-out disc, with closed test cylinder port, the test barrel inner chamber forms an airtight cavity; Be filled with the tested inflammable gas of normal temperature and pressure to the test barrel inner chamber, the monitoring combustable gas concentration, when concentration arrives preset concentration, the opening point firearm, the gas in the test barrel is blasted, and flame breaks through the blow-out disc of front end and jets out flames.Pressure transducer obtains the pressure in the instant of detonation test barrel and is passed to display module, the flame status when catching the instant of detonation bleed pipe with the variation of high power camera record blast process with camera.By the combustable gas concentration that test records, the environment temperature during test, the force value of instant of detonation and the flame status of ejection can obtain the mutual relationship between four.
The present invention adopts high-quality plexi-glass tubular as the Exploding test cylinder, need not in advance tube inner chamber to be formed vacuum environment, has saved the step that vacuumizes, and is simple to operate.And the opening of glass tube front end is larger, is easy to observe the situation of flame ejection and flame rollback, is conducive to manage interior data acquisition.The present invention adopts high power video camera, camera and sound meter to catch flame status and the blast sound of explosion time, is conducive to explosion time and gathers diverse location pressure delta data, instant of detonation differentiation situation, playback when also being conducive to impart knowledge to students.
Beneficial effect of the present invention is embodied in: simple to operate, expense is cheap, but the advantage of the flame status of playback instant of detonation, the internal pressure variation of demonstration blasting cartridge and the blast sound.
Description of drawings
Fig. 1 is one-piece construction synoptic diagram of the present invention.
Embodiment
With reference to Fig. 1, shock wave tubular type flammable gas explosion experimental provision, comprise tubulose Exploding test cylinder 11, described Exploding test cylinder 11 transverse strands are located on the support 8, the front opening of described Exploding test cylinder 11 and be provided with blow-out disc with opening sealing, described Exploding test cylinder 11 is connected with a feeder that injects the inflammable gas of normal temperature and pressure to tube inner chamber, described Exploding test cylinder 11 is provided with the pressure transducer 2 of induction cylinder pressure, the monitor of gas concentration in the monitoring cylinder, light the lighter 10 of an interior gas, described pressure transducer 2 is connected the back-end sealing of described Exploding test cylinder 11 with the display module of display barrel internal pressure value.
Further, described pressure transducer 2 has three, is arranged at respectively front end, middle-end and the back-end location of described Exploding test cylinder.
Further, video camera 9, the record explosive flame that is provided with record blast state evolution around the described Exploding test cylinder 11 go out the tubulose attitude camera 3 and the sound meter 5 of the record blast sound.
Further, the place ahead of the front opening of described Exploding test cylinder 11 is provided with the anti-shock baffle 7 of the impact of barrier gas explosion time generation.
Further, the air intake opening of described Exploding test cylinder 11 is provided with the flowmeter 1 that can directly show data.
Further, described Exploding test cylinder 11 is the plexi-glass tubular of a cylindrical seamless, and the rear end is sealed with circular poly (methyl methacrylate) plate, plexi-glass tubular front end first flange 4 that bonds, and described blow-out disc is fixed in the opening part of plexi-glass tubular by the second flange 6.
Technical conceive of the present invention is: first with flange fixedly blow-out disc, with closed test cylinder 11 ports, the test barrel inner chamber forms an airtight cavity; Be filled with the tested inflammable gas of normal temperature and pressure to the test barrel inner chamber, the monitoring combustable gas concentration, when concentration arrives preset concentration, the opening point firearm, the gas in the test barrel is blasted, and flame breaks through the blow-out disc of front end and jets out flames.Pressure transducer 2 obtains the pressure in the instant of detonation test barrel and is passed to display module, the flame status when catching the instant of detonation bleed pipe with the variation of high power video camera 9 record blast process with camera 3.By the combustable gas concentration that test records, the environment temperature during test, the force value of instant of detonation and the flame status of ejection can obtain the mutual relationship between four.
The present invention adopts high-quality plexi-glass tubular as the Exploding test cylinder, need not in advance tube inner chamber to be formed vacuum environment, has saved the step that vacuumizes, and is simple to operate.And the opening of glass tube front end is larger, is easy to observe the situation of flame ejection and flame rollback, is conducive to manage interior data acquisition.The present invention adopts high power video camera 9, camera 3 and sound meter 5 to catch flame status and the blast sound of explosion time, is conducive to explosion time and gathers diverse location pressure delta data, instant of detonation differentiation situation, playback when also being conducive to impart knowledge to students.
The described content of this instructions embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reaches in those skilled in the art conceives the equivalent technologies means that can expect according to the present invention.
Claims (6)
1. shock wave tubular type flammable gas explosion experimental provision, comprise tubulose Exploding test cylinder, described Exploding test cylinder transverse strands is located on the support, the front opening of described Exploding test cylinder and be provided with blow-out disc with opening sealing, described Exploding test cylinder is connected with a feeder that injects the inflammable gas of normal temperature and pressure to tube inner chamber, described Exploding test cylinder is provided with the pressure transducer of induction cylinder pressure, the monitor of gas concentration in the monitoring cylinder, light the lighter of an interior gas, described pressure transducer is connected with the display module of display barrel internal pressure value, it is characterized in that: the back-end sealing of described Exploding test cylinder.
2. shock wave tubular type flammable gas explosion experimental provision as claimed in claim 1, it is characterized in that: described pressure transducer has three, is arranged at respectively front end, middle-end and the back-end location of described Exploding test cylinder.
3. shock wave tubular type flammable gas explosion experimental provision as claimed in claim 2 is characterized in that: video camera, the record explosive flame that is provided with record blast state evolution around the described Exploding test cylinder go out the tubulose attitude camera and the sound meter of the record blast sound.
4. shock wave tubular type flammable gas explosion experimental provision as claimed in claim 3 is characterized in that: the place ahead of the front opening of described Exploding test cylinder is provided with the anti-shock baffle of the impact that the barrier gas explosion time produces.
5. shock wave tubular type flammable gas explosion experimental provision as claimed in claim 4, it is characterized in that: the air intake opening of described Exploding test cylinder is provided with the flowmeter that can directly show data.
6. such as the described shock wave tubular type of one of claim 1-5 flammable gas explosion experimental provision, it is characterized in that: described Exploding test cylinder is the plexi-glass tubular of a cylindrical seamless, the rear end is sealed with circular poly (methyl methacrylate) plate, plexi-glass tubular front end first flange that bonds, described blow-out disc is fixed in the opening part of plexi-glass tubular by the second flange.
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| CN2012103866810A CN102930770A (en) | 2012-10-12 | 2012-10-12 | Shock tube type combustible gas explosion experiment device |
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| CN2012103866810A CN102930770A (en) | 2012-10-12 | 2012-10-12 | Shock tube type combustible gas explosion experiment device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655817A (en) * | 2015-01-23 | 2015-05-27 | 青岛科技大学 | Experiment device and method for simulating in-situ secondary explosion |
| CN105070167A (en) * | 2015-08-08 | 2015-11-18 | 郑州幼儿师范高等专科学校 | Dust explosion experimental device and experimental method |
| CN105699306A (en) * | 2016-03-28 | 2016-06-22 | 武汉理工大学 | Double-wavelength testing device applicable to judgment of firing delay time of shock tube |
| CN106226021A (en) * | 2016-08-29 | 2016-12-14 | 中国人民解放军理工大学 | Gas burst pressure produces and loading experimental apparatus |
| CN108389636A (en) * | 2018-02-05 | 2018-08-10 | 西安交通大学 | Combustible gas explosion experiment system and method in a kind of small size pipeline |
| CN112611270A (en) * | 2020-12-14 | 2021-04-06 | 西安近代化学研究所 | Visual cloud detonation test device |
| CN112611271A (en) * | 2020-12-14 | 2021-04-06 | 西安近代化学研究所 | Cloud detonation capacity measuring method |
| CN114863778A (en) * | 2022-03-29 | 2022-08-05 | 西北核技术研究所 | Separated explosion simulation experiment device and implementation method thereof |
| CN115112796A (en) * | 2022-06-24 | 2022-09-27 | 天津大学 | Gas sampling detection system for shock tube |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655817A (en) * | 2015-01-23 | 2015-05-27 | 青岛科技大学 | Experiment device and method for simulating in-situ secondary explosion |
| CN105070167A (en) * | 2015-08-08 | 2015-11-18 | 郑州幼儿师范高等专科学校 | Dust explosion experimental device and experimental method |
| CN105070167B (en) * | 2015-08-08 | 2017-09-12 | 郑州幼儿师范高等专科学校 | A kind of dust explosion experimental provision and experimental method |
| CN105699306A (en) * | 2016-03-28 | 2016-06-22 | 武汉理工大学 | Double-wavelength testing device applicable to judgment of firing delay time of shock tube |
| CN105699306B (en) * | 2016-03-28 | 2018-06-22 | 武汉理工大学 | Suitable for the dual wavelength test device of shock tube ignition delay time judgement |
| CN106226021A (en) * | 2016-08-29 | 2016-12-14 | 中国人民解放军理工大学 | Gas burst pressure produces and loading experimental apparatus |
| CN108389636A (en) * | 2018-02-05 | 2018-08-10 | 西安交通大学 | Combustible gas explosion experiment system and method in a kind of small size pipeline |
| CN112611270A (en) * | 2020-12-14 | 2021-04-06 | 西安近代化学研究所 | Visual cloud detonation test device |
| CN112611271A (en) * | 2020-12-14 | 2021-04-06 | 西安近代化学研究所 | Cloud detonation capacity measuring method |
| CN114863778A (en) * | 2022-03-29 | 2022-08-05 | 西北核技术研究所 | Separated explosion simulation experiment device and implementation method thereof |
| CN114863778B (en) * | 2022-03-29 | 2023-12-15 | 西北核技术研究所 | Separated type chemical explosion simulation experiment device and implementation method thereof |
| CN115112796A (en) * | 2022-06-24 | 2022-09-27 | 天津大学 | Gas sampling detection system for shock tube |
| CN115112796B (en) * | 2022-06-24 | 2023-09-29 | 天津大学 | Gas sampling detection system for shock tube |
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Application publication date: 20130213 |