CN103364531A - Combustible liquid vapor explosion and explosion suppression characteristic test system - Google Patents
Combustible liquid vapor explosion and explosion suppression characteristic test system Download PDFInfo
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- CN103364531A CN103364531A CN2013103002875A CN201310300287A CN103364531A CN 103364531 A CN103364531 A CN 103364531A CN 2013103002875 A CN2013103002875 A CN 2013103002875A CN 201310300287 A CN201310300287 A CN 201310300287A CN 103364531 A CN103364531 A CN 103364531A
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Abstract
The invention discloses a combustible liquid vapor explosion and explosion suppression characteristic test system. The system comprises an explosion tank, a double heating temperature-control system, a gas distribution system, a double ignition delay explosion suppression system, and a data test and acquisition system. The explosion tank is provided with a window and six through holes. The explosion tank is covered by a heating sheet of the double heating temperature-control system on the explosion tank. An insulation material is covered on the heating sheet. The temperature-control system is connected with the heating sheet and an air heater. An air compressor of the gas distribution system communicates with a through hole I through the air heater, an ejector, and an ejector pipe. A gas discharge pipe communicates with a through hole II. A vacuum pump communicates with a through hole III. A static pressure sensor communicates with a through hole IV. An ignition electrode of the double ignition delay explosion suppression system is arranged in the explosion tank, and is connected with a delay circuit and a high-voltage power source through the through hole V. An explosion suppression tank is arranged on the top of the explosion tank. A gas generator is arranged in the explosion suppression tank. A nozzle is arranged on the bottom of the explosion suppression tank. A dynamic pressure sensor of the data test and acquisition system is arranged on the through hole VI, and is connected with an oscilloscope through a signal amplifier. The system provided by the invention has the advantages of simple application, multiple test functions, and high precision.
Description
Technical field
The invention belongs to that flammable liquid fires, datonation-inhibition technical field of measurement and test, relate to that a kind of flammable liquid steam fires, datonation-inhibition characteristic test system.
Background technology
At present, domesticly can still belong to rare to the system that flammable liquid explosive characteristic, datonation-inhibition characteristic are tested, and existingly fire, mainly there is following technical barrier in datonation-inhibition test macro:
The first, existing experimental provision is measured research mainly for blast, propagation characteristic and the datonation-inhibition characteristic of inflammable gas or dust, and wherein most devices can not be realized mensuration to flammable liquid explosive characteristic, datonation-inhibition characteristic;
The second, existing experimental provision generally only can carry out the experiment that fires of normal temperature and pressure, can't finish under the condition of high temperature mensuration of all kinds of parameters in the blast process;
Three, the blast cavity of existing experimental provision mostly is long and narrow pipeline, and this has just limited the range of application of its experimental results to a great extent;
Four, existing large volume, tubular or the spherical experimental provision overwhelming majority all below 100L, cause whole experimental situation and actual environment to differ very large, and resulting experimental data is for little than the directive significance of large space blast;
Five, same experimental provision does not generally possess the ability of measuring flammable liquid steam explosive characteristic, datonation-inhibition characteristic and the ability of studying Explosion suppressant characteristic, gas-forming agent characteristic and explosion suppression device simultaneously;
Six, in the experimentation, device impermeability, type of heating, heat insulation effect, input mode, pipeline distribution homogeneity and precision, sensor resistance to elevated temperatures and oscillograph triggering mode have all affected the correctness of experimental data, cause carrying out of such experiment very difficult;
Seven, existing experimental provision generally can't carry out the Millisecond adjusting to Explosion suppressant the opportunity of shedding, and carries out accordingly all kinds of datonation-inhibition experiments.
So, for the firing of flammable liquid steam, datonation-inhibition characteristic are tested, especially Explosion suppressant characteristic, gas-forming agent characteristic are studied, be necessary to develop a kind of the firing of flammable liquid steam, datonation-inhibition characteristic test system of being exclusively used in.
Summary of the invention
The present invention is the defects that exists in order to solve prior art, and a kind of flammable liquid steam fires, datonation-inhibition characteristic test system and provide.
The present invention is achieved by the following technical solutions:
Flammable liquid steam fires, datonation-inhibition characteristic test system, comprises blasting pot, two heated for controlling temperature system, gas distributing system, dual ignition delay time datonation-inhibition system, data test acquisition system;
Offer respectively form and six through holes on the sidewall of described blasting pot;
Described pair of heated for controlling temperature system, bag heating plate, insulation material, air heater, temperature-controlling system, wherein heating plate is coated on the blasting pot sidewall, and insulation material is fixed on the heating plate, and temperature-controlling system connects respectively heating plate and air heater;
Described gas distributing system comprises gas exhaust piping, air compressor, injector, injection pipeline, vacuum pump, static pressure transducer, described air compressor is successively by air heater, injector and injection pipeline UNICOM through hole I, gas exhaust piping and through hole II UNICOM, vacuum pump and through hole III UNICOM, static pressure transducer and through hole IV UNICOM;
The described dual ignition datonation-inhibition system that delays time comprises spark electrode, high-voltage power supply, delay circuit, datonation-inhibition tank, described spark electrode is installed in the inside of blasting pot, be connected with delay circuit, high-voltage power supply by the through hole V, described datonation-inhibition tank is fixed on the blasting pot top, datonation-inhibition tank mounted inside gas generator, the bottom is equipped with nozzle;
Described data test acquisition system comprises dynamic pressure transducer, signal amplifier and oscillograph, and dynamic pressure transducer is installed on the through hole VI that is positioned at blasting pot outer wall centre position, is connected with oscillograph by signal amplifier.
Described blasting pot is 220L cylindricality blasting pot, is provided with suitable sealing and bearing structure, compares with similar tank body, and the volume of this blasting pot is large, and properer with the situation than the large space blast in the reality, measurement data is more reliable.
Described gas exhaust piping and vacuum pump are equipped with cooling tube.
Described nozzle is wide-angle solid cone shaped nozzle.
Described spark electrode is comprised of spark plug, spray point, teflon sleeve, insulation sleeve, and spray point is fixed in the teflon sleeve, and is connected with spark plug, and spark plug is fixed in the insulation sleeve.
The present invention two heated for controlling temperature systems comprise and being comprised of heating plate and insulation material, the active heat riser that the blasting pot inner chamber can be heated rapidly, air heater is as auxiliary heat riser, air heat can be sent into blasting pot, temperature-controlling system is conventional temperature-controlling system, formed by two K type thermopairs and solid-state relay, relay, potentiometer, current transformer, reometer, Displaying Meter, protective tube, switch and wire etc., can be with temperature adjusting to specified scope; Become possibility so that different flammable liquids are carried out Exploding test, can carry out all kinds of explosive tests under the High Temperature High Pressure, as: various flammable liquids, the gases such as gasoline, aviation kerosene, alcohol, acetone, liquefied petroleum gas (LPG); Gas distributing system of the present invention comprises the power packages locking device that hot blast is moved up, and can make flammable liquid send into the injection pipeline of blasting pot with hot-air in good time; The dual ignition datonation-inhibition system that delays time has comprised the spark electrode that the combination gas at blasting pot lumen centers place can be lighted, can make the high-voltage power supply of spark electrode moment puncture, can be accurate to Millisecond to explosion suppression device and the spark electrode delay circuit that start-up time, difference was regulated and control, can be with the datonation-inhibition tank of gas-forming agent and Explosion suppressant cooperation, can load the gas generator of gas-forming agent, gas generator is comprised of aluminium film, pressure ring, threaded cylindrical shell, removable insole pieces, the nozzle that the Explosion suppressant Large-Area-Uniform can be sprayed out; Described data test acquisition system has comprised and can at High Temperature High Pressure accurate dynamic pressure transducer, signal amplifier, the oscillograph that gathers the explosion pressure signal of lower moment, then pass through computer data acquisition.
Compared with prior art, the present invention has the following advantages:
(1) can carry out Exploding test to different flammable liquids, can carry out all kinds of explosive tests under the High Temperature High Pressure, as: various flammable liquids, the gases such as gasoline, aviation kerosene, alcohol, acetone, liquefied petroleum gas (LPG);
(2) datonation-inhibition function that can carry out gas-forming agent and Explosion suppressant cooperation is tested and research, so that the experimental provision function diversification;
(3) can carry out data acquisition under the condition of high temperature, distinctive signals collecting mode is so that data are processed with research more simple, convenient;
(4) compare with similar tank body, the volume of blasting pot is large, and properer with the situation than the large space blast in the reality, measurement data is more reliable;
(5) flammable liquid steam explosive characteristic, datonation-inhibition characteristic can be measured simultaneously, and Explosion suppressant characteristic, gas-forming agent characteristic and explosion suppression device can be studied simultaneously;
(6) efficiently solve the technical barriers such as impermeability, type of heating, heat insulation effect, input mode, pipeline distribution homogeneity and precision, sensor resistance to elevated temperatures and oscillograph triggering mode that have experimental provision now;
(7) selection of the design by delay circuit and the Millisecond time relay has strengthened the operability of experiment so that the opportunity of shedding of Explosion suppressant is accurately controlled;
In sum, the present invention is reasonable in design, operation is easy to use and test function is many, measuring accuracy is high, can effectively solve many practical problemss.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is theory diagram of the present invention;
Among the figure: the 1-blasting pot, the 2-form, the 3-heating plate, the 4-insulation material, the 5-air heater, the 6-temperature-controlling system, the 7-gas exhaust piping, the 8-air compressor, the 9-injector, 10-injection pipeline, the 11-vacuum pump, the 12-static pressure transducer, 13-through hole I, 14-through hole II, 15-through hole III, 16-through hole IV, the 17-spark electrode, the 18-high-voltage power supply, the 19-delay circuit, the datonation-inhibition tank of 20-, 21-through hole V, the 22-gas generator, the 23-nozzle, the 24-dynamic pressure transducer, the 25-signal amplifier, 26 oscillographs, 27-through hole VI.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Flammable liquid steam as shown in Figure 1 fires, datonation-inhibition characteristic test system, comprises blasting pot 1, two heated for controlling temperature system, gas distributing system, dual ignition delay time datonation-inhibition system, data test acquisition system;
Offer respectively form 2 and six through holes on the sidewall of described blasting pot 1;
Described pair of heated for controlling temperature system, bag heating plate 3, insulation material 4, air heater 5, temperature-controlling system 6, wherein heating plate 3 is coated on blasting pot 1 sidewall, and insulation material 4 is fixed on the heating plate 3, and temperature-controlling system 6 connects respectively heating plate 3 and air heater 5;
Described gas distributing system comprises gas exhaust piping 7, air compressor 8, injector 9, injection pipeline 10, vacuum pump 11, static pressure transducer 12, described air compressor 8 is successively by air heater 5, injector 9 and injection pipeline 10 UNICOM's through hole I 13, gas exhaust piping 7 and through hole II 14 UNICOMs, vacuum pump 11 and through hole III 15 UNICOMs, static pressure transducer 12 and through hole IV 16 UNICOMs;
The described dual ignition datonation-inhibition system that delays time comprises spark electrode 17, high-voltage power supply 18, delay circuit 19, datonation-inhibition tank 20, described spark electrode 17 is installed in the inside of blasting pot 1, are connected with delay circuit by through hole V 21 and are connected with high-voltage power supply 18, described datonation-inhibition tank 20 is fixed on blasting pot 1 top, datonation-inhibition tank 20 mounted inside gas generators 22, the bottom is equipped with nozzle 23;
Described data test acquisition system comprises dynamic pressure transducer 24, signal amplifier 25 and oscillograph 26, and dynamic pressure transducer 24 is installed on the through hole VI 27 that is positioned at blasting pot 1 outer wall centre position, is connected connection with oscillograph by signal amplifier 25.
Wherein blasting pot 1 is 220L cylindricality blasting pot, is the main part of whole system; Heating plate 3 and insulation material 4 are installed on the outer wall of blasting pot 1, are used for initiatively heating up to system, and air heater 5, adjusting blasting pot 1 outer wall and 10 liang of temperature-controlling systems 6 of locating temperature of injection pipeline by injection pipeline 10 is connected heat up as auxiliary; Gas distributing system is included as fluid provides the air compressor 8 of power source, be equipped with sample introduction injector 9 injection pipeline 10, for fluid power source is provided and be equipped with the vacuum pump 11 of cooling tube and be equipped with equally cooling tube gas exhaust piping 7, show the static pressure transducer 12 of blasting pot 1 internal pressure; The dual ignition datonation-inhibition system that delays time comprises and is installed on the datonation-inhibition tank 20 that blasting pot 1 top realizes that powder is shed, utilize high-voltage power supply 18 to obtain the spark electrode 17 that high energy voltage discharges in blasting pot 1 center, and the delay circuit 19 that the above two datonation-inhibition tanks 20 are connected with spark electrode 17, wherein said spark electrode 17 is by spark plug, spray point, teflon sleeve, insulation sleeve forms, spray point is fixed in the teflon sleeve, and be connected with spark plug, spark plug is fixed in the insulation sleeve, the gas generator 22 of datonation-inhibition tank 20 mounted inside and the nozzle 23 of external mounting, nozzle 23 are wide-angle solid cone shaped nozzle; The data test acquisition system comprises dynamic pressure transducer 24, the collection on the through hole VI 27 that is installed on blasting pot 1 outer wall centre position and adjusts the signal amplifier 25 of signal and the oscillograph 26 of display.
Principle of work of the present invention as shown in Figure 2, during work: at first, assemble under the complete prerequisite at blasting pot 1 and datonation-inhibition tank 20, start two heated for controlling temperature systems in conjunction with gas distributing system, utilize heating plate 3 that tank body and its internal flow of blasting pot 1 are heated to uniform temperature, the fluid that utilizes simultaneously air heater 5 and gas distributing system will be heated to uniform temperature continues to send into blasting pot 1, and injection pipeline 10 is always opening with gas exhaust piping 7 in the whole temperature-rise period; Keep in the temperature range of gaseous state when temperature reaches flammable liquid steam, two heated for controlling temperature system is in keeping warm mode, and the temperature of blasting pot and injection pipeline 10 remains unchanged within a certain period of time substantially, closes gas distributing system; Secondly, sealing blasting pot 1 utilizes vacuum pump 11 that tank body 1 is pumped into negative pressure state; According to experiment in earlier stage calculating determined flammable liquid sampling volume scope, the flammable liquid of certain volume is sprayed in the blasting pot 1 by injector 9; Gas exhaust piping 7 and vacuum pump 11 be closed condition, injection pipeline 10 in the situation of opening, start gas distributing system, by adjusting blasting pot 1 internal pressure so that sample and hot-air mix; At last, adjust delay circuit 19 delay times, data acquisition system (DAS) is in opening, 17 chargings of 18 pairs of spark electrodes of high-voltage power supply, start delay circuit 19, combination gas is lighted by spark electrode 17, certain time-delay is datonation-inhibition tank 20 startups after the time, gas generator 22 sprays into blasting pot 1 inner chamber with Explosion suppressant by nozzle 23, the blast of combination gas is suppressed, the explosion pressure signal is caught by dynamic pressure transducer 24, processes being transferred to oscillograph 26 by signal amplifier 25, and oscillograph 26 shows and storage explosion pressure signal waveform.
After experiment finishes, can promote fresh air stream by gas distributing system, clean blasting pot 1 interior residual gas, and discharge outdoor by gas exhaust piping 7.
In the experiment test, can attempt the gas sample under various temperature, the pressure parameter condition, both can carry out explosion test, also can carry out datonation-inhibition experiment.By changing Explosion suppressant, can investigate various Explosion suppressant datonation-inhibition functions.
Claims (5)
- A flammable liquid steam fire, datonation-inhibition characteristic test system, it is characterized in that, comprise blasting pot (1), two heated for controlling temperature system, gas distributing system, dual ignition delay time datonation-inhibition system, data test acquisition system;Offer respectively form (2) and six through holes on the sidewall of described blasting pot (1);Described pair of heated for controlling temperature system, bag heating plate (3), insulation material (4), air heater (5), temperature-controlling system (6), wherein heating plate (3) is coated on blasting pot (1) sidewall, insulation material (4) is fixed on the heating plate (3), and temperature-controlling system (6) connects respectively heating plate (3) and air heater (5);Described gas distributing system comprises gas exhaust piping (7), air compressor (8), injector (9), injection pipeline (10), vacuum pump (11), static pressure transducer (12), described air compressor (8) is successively by air heater (5), injector (9) and injection pipeline (10) UNICOM's through hole I (13), gas exhaust piping (7) and through hole II (14) UNICOM, vacuum pump (11) and through hole III (15) UNICOM, static pressure transducer (12) and through hole IV (16) UNICOM;The described dual ignition datonation-inhibition system that delays time comprises spark electrode (17), high-voltage power supply (18), delay circuit (19), datonation-inhibition tank (20), described spark electrode (17) is installed in the inside of blasting pot (1), be connected 19 by through hole V (21) with delay circuit) be connected with high-voltage power supply (18), described datonation-inhibition tank (20) is fixed on blasting pot (1) top, datonation-inhibition tank (20) mounted inside gas generator (22), bottom are equipped with nozzle (23);Described data test acquisition system comprises dynamic pressure transducer (24), signal amplifier (25) and oscillograph (26), dynamic pressure transducer (24) is installed on the through hole VI (27) that is positioned at blasting pot (1) outer wall centre position, is connected 26 by signal amplifier (25) with oscillograph) connect.
- Flammable liquid steam according to claim 1 fire, datonation-inhibition characteristic test system, it is characterized in that described blasting pot (1) is 220L cylindricality blasting pot.
- Flammable liquid steam according to claim 1 and 2 fire, datonation-inhibition characteristic test system, it is characterized in that described gas exhaust piping (7) and vacuum pump (11) are equipped with cooling tube.
- Flammable liquid steam according to claim 1 and 2 fire, datonation-inhibition characteristic test system, it is characterized in that described nozzle (23) is wide-angle solid cone shaped nozzle.
- Flammable liquid steam according to claim 1 and 2 fire, datonation-inhibition characteristic test system, it is characterized in that, described spark electrode (17) is comprised of spark plug, spray point, teflon sleeve, insulation sleeve, spray point is fixed in the teflon sleeve, and be connected with spark plug, spark plug is fixed in the insulation sleeve.
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| CN104297292A (en) * | 2014-10-20 | 2015-01-21 | 中国人民解放军总后勤部油料研究所 | System and method for determining explosion suppression performance of liquid fuel vapor by water vapor |
| CN105136856A (en) * | 2015-10-13 | 2015-12-09 | 国家安全生产监督管理总局化学品登记中心 | Dust burning explosion tester with temperature-controllable ignition device |
| CN106093116A (en) * | 2016-08-26 | 2016-11-09 | 上海应用技术学院 | Combustible gas explosion parameter test device |
| CN106908478A (en) * | 2017-02-16 | 2017-06-30 | 中国计量大学 | Judge the experimental system and detection method of fuel gas effectiveness of explosion suppression in restricted clearance |
| CN107271158A (en) * | 2017-05-25 | 2017-10-20 | 中海油天津化工研究设计院有限公司 | A kind of special blow-cook explosive test tank |
| CN107744731A (en) * | 2017-11-22 | 2018-03-02 | 安徽理工大学 | A kind of air distributing device that experiment is fired for fuel gas, liquid vapour and dust |
| CN108563840A (en) * | 2018-03-23 | 2018-09-21 | 西安交通大学 | A kind of nuclear reactor vapour explosion comprehensive analysis method |
| CN108802327A (en) * | 2018-05-08 | 2018-11-13 | 安徽理工大学 | A kind of vacuum explosion effect experimental rig |
| CN110006948A (en) * | 2019-04-09 | 2019-07-12 | 西安交通大学 | Flammable liquid high pressure explosion limit measuring device and molar fraction air distributing method |
| CN113358848A (en) * | 2021-06-15 | 2021-09-07 | 郑文苑 | Initiating explosive device tester |
| CN113532867A (en) * | 2021-06-17 | 2021-10-22 | 广州特种机电设备检测研究院 | Explosion-proof performance testing device for air intake and exhaust system of explosion-proof internal combustion engine |
| WO2022160589A1 (en) * | 2021-01-27 | 2022-08-04 | 福州大学 | Pipe gallery gas explosion suppression method and apparatus, and pipe gallery explosion suppression simulation experiment system |
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| CN104267168B (en) * | 2014-08-05 | 2016-07-06 | 中国人民解放军总后勤部油料研究所 | A kind of evaluation method of flammable liquid explosion hazard under the unconfined condition of outfield |
| CN104267168A (en) * | 2014-08-05 | 2015-01-07 | 中国人民解放军总后勤部油料研究所 | Method for evaluation of inflammable liquid explosion risk under unrestricted condition in outfield |
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| CN106093116B (en) * | 2016-08-26 | 2019-10-11 | 上海应用技术学院 | Combustible gas explosion parameter test device |
| CN106093116A (en) * | 2016-08-26 | 2016-11-09 | 上海应用技术学院 | Combustible gas explosion parameter test device |
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| CN107744731A (en) * | 2017-11-22 | 2018-03-02 | 安徽理工大学 | A kind of air distributing device that experiment is fired for fuel gas, liquid vapour and dust |
| CN108563840A (en) * | 2018-03-23 | 2018-09-21 | 西安交通大学 | A kind of nuclear reactor vapour explosion comprehensive analysis method |
| CN108802327A (en) * | 2018-05-08 | 2018-11-13 | 安徽理工大学 | A kind of vacuum explosion effect experimental rig |
| CN110006948A (en) * | 2019-04-09 | 2019-07-12 | 西安交通大学 | Flammable liquid high pressure explosion limit measuring device and molar fraction air distributing method |
| WO2022160589A1 (en) * | 2021-01-27 | 2022-08-04 | 福州大学 | Pipe gallery gas explosion suppression method and apparatus, and pipe gallery explosion suppression simulation experiment system |
| CN113358848A (en) * | 2021-06-15 | 2021-09-07 | 郑文苑 | Initiating explosive device tester |
| CN113532867A (en) * | 2021-06-17 | 2021-10-22 | 广州特种机电设备检测研究院 | Explosion-proof performance testing device for air intake and exhaust system of explosion-proof internal combustion engine |
| CN113532867B (en) * | 2021-06-17 | 2024-05-10 | 广州特种设备检测研究院(广州市特种设备事故调查技术中心、广州市电梯安全运行监控中心) | Explosion-proof performance testing device for air inlet and outlet system of explosion-proof internal combustion engine |
| CN117516785A (en) * | 2024-01-04 | 2024-02-06 | 中国矿业大学 | Device and method for testing gas explosion and dynamic pressure in limited space |
| CN117516785B (en) * | 2024-01-04 | 2024-03-19 | 中国矿业大学 | Device and method for testing gas explosion and dynamic pressure in limited space |
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