CN102879416A - Experiment device and experiment method for gas cloud combustion, explosion simulation and inerting, inhibition - Google Patents
Experiment device and experiment method for gas cloud combustion, explosion simulation and inerting, inhibition Download PDFInfo
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- CN102879416A CN102879416A CN2012103643776A CN201210364377A CN102879416A CN 102879416 A CN102879416 A CN 102879416A CN 2012103643776 A CN2012103643776 A CN 2012103643776A CN 201210364377 A CN201210364377 A CN 201210364377A CN 102879416 A CN102879416 A CN 102879416A
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Abstract
The invention relates to the technical field of fire hazard safety, and especially relates to an experiment device and an experiment method for gas cloud combustion, explosion simulation and inerting, inhibition. The device comprises an experiment test system composed of an explosion experiment container tank, a flame and explosion pressure radial propagation detection device, an ignition device, a generated gas sampling analyzer, and a high-speed schlieren and data acquisition, a sample introduction system, a combustion explosion inerting inhibition system, and a control system composed of wireless synchronous control and computer remote monitoring, and is a multifunctional comprehensive experiment platform device. The invention realizes 180-degree rotation of the tank, data synchronous acquisition, gas distribution and sample introduction with precise proportions, synchronous and delayed multimode ignition and inhibition system ejection; wireless and wired data transmission is adopted for control; man-machine separation of the tank and the controlling person is realized; safety and reliability of data transmission are guaranteed; combustion or explosion and inerting and inhibition experiments of various experiment samples such as gas cloud, dust, oil mist, and the like can be carried out when the tank is in a vertical or horizontal state.
Description
Technical field
The present invention relates to the fire safety evaluating technical field, particularly a kind of gas cloud burning, blast analogue and inerting, inhibition experimental provision and experimental technique.
Background technology
Flammable premix gas, dust, liquid mist steam fire, explosion accident are common disaster accident types in industrial fire, the explosion accident such as petrochemical complex, and relevant gas cloud, dust, liquid mist fire/explosion feature, Evolution and fire extinguishing thereof, explosion-proof, datonation-inhibition technology are the focuses of industrial fire blast Study of Prevention Technology.People adopt the experimental provisions such as flame propagation pipe, shock tube, explosive container or simulation tunnel usually to flammable vapor cloud, dust combustion, blast characteristics research at present.At present China's dust cloud explosion property and explosion limits test analysis national standard mainly contain GB/T16425, and GB/T16426 and GB/T12474, its experiment test mainly adopt the spherical explosive container of 20L, 1 cube of column type explosive container and pipe burner.Suppress for the burning of gas cloud and explosive flame, people adopt the experimental provisions such as flame propagation pipe or simulation tunnel usually, study by observing the characteristic parameters such as flame propagation process and explosive flame temperature, pressure.And the comprehensive experiment method and the device that still do not have inerting, burning or explosive flame for flammable vapor cloud, dust and mist of oil steam to suppress at present.
Summary of the invention
The objective of the invention is for different samples such as flammable vapor cloud, dust and mist of oil steam device and the experimental technique researching and developing a kind of flammable vapor cloud, dust and the burning of mist of oil steam, blast analogue and carry out inerting, explosive flame inhibition experiment.Adopt the present invention can satisfy different oxygen concentrations, different sparking mode and ignition energy condition, multi-form flammable vapor cloud burning, the test of blast characteristic parameter, the demands such as the experimental study such as burning, blast inerting and inhibition evaluation and the detection of inerting inhibition system, therefore, this device is a kind of multifunctional comprehensive experiment porch device.
The technical scheme that the present invention takes for achieving the above object is: a kind of gas cloud burning, blast analogue and inerting, suppress experimental provision, it is characterized in that: comprise experiment and test macro, sampling system, combustion explosion suppresses system and test control system four parts, experiment comprises the explosion test container tank with test macro, flame and explosion pressure radial propagation pick-up unit, portfire, generate the gas sampling analyser, the high speed schlieren system and the data acquisition system (DAS) that are consisted of by high-speed camera and schlieren, test control system comprises wireless synchronization control system and computer remote monitoring system, described explosion test container tank is right cylinder, cylindrical up and down both ends of the surface are spherical, in cylindrical both sides rotating mechanism is installed, be separately installed with manhole flange and lower manhole flange at two spherical end surfaces, and by upper manhole flange and lower manhole flange top manhole cover and bottom manhole cover are installed respectively, manhole cover center, top is equipped with flange seat, be equipped with on the flange seat for the common interface that connects combustion explosion inhibition system, be equipped with for the sample introduction flange that connects sampling system in the center of bottom manhole cover, on the manhole cover of bottom, also be equipped with simultaneously for the gas sampling mouth that connects sampling system, be symmetrically installed with view window for the observation of high-speed photography and penetration schlieren by mounting flange respectively in both side surface center, the front and back of explosion test container tank, along explosion test container tank tank body vertical axes to being provided with the sensor mounting flange, sets of temperature sensors is fixed on the sensor mounting flange and with data acquisition system (DAS) with the pressure transducer group and links to each other, described portfire radially is installed in the center of explosion test container tank by mounting flange, described flame and explosion pressure radial propagation pick-up unit are installed in the center of explosion test container tank by mounting flange, and radially towards the incendiary source position of portfire, and be connected with data acquisition system (DAS), the described high speed schlieren system that is made of high-speed camera and schlieren is fixed on the position with respect to described view window, described generation gas sampling analyser is connected on the thieff hatch of explosion test container tank, and be connected with data acquisition system (DAS), data acquisition system (DAS) is connected with computer remote monitoring system by the wireless synchronization control system.
The experimental technique of gas cloud of the present invention burning, blast analogue and inerting, inhibition experimental provision may further comprise the steps:
(1). at first utilize vacuum pump to vacuumize in the explosion test container tank, be filled with in the explosion test container tank by the matched proportion density volume ratio respectively according to inflammable gas and the oxygen of experiment needs with laboratory sample, utilize high velocity air in the explosion test container tank, fully to mix; Or but combustible dust or the fuel material sample of experiment utilized pressurized air to spurt at a high speed in the explosion test container tank to form flammable vapor cloud;
(2). when carrying out the burning of gas cloud or explosion test, kind according to gas cloud combustible material is selected corresponding sparking mode and ignition energy, utilize pulse firing, chemic ignition or thermo-fuse sparking mode that flammable vapor cloud is lighted a fire, and adjust the pulse firing energy by the regulating impulse ignition voltage, the igniting of realization different-energy utilizes temperature, pressure transducer test burning or explosive flame temperature and explosion test container tank internal pressure to change;
(3). when carrying out explosive flame inhibition experiment, utilize as required wireless synchronization control system while or delay start portfire and inhibition system, by view window observation burning or explosion suppression experimentation phenomenon, utilize test system and test record relevant feature parameters;
(4). when carrying out flammable vapor cloud inerting experiment, then in the explosion test container tank of the flammable vapor cloud that distributes, time-delay or spurt synchronously the inerting inhibitor of respective concentration, adopt different-energy or sparking mode to carry out positive ignition, by the experimental observation of view window and test macro, inhibitor inerting inhibition is carried out evaluation analysis.
The beneficial effect that the present invention produces is: realized that test macro, sampling system and inhibition system carry out centralized control by the wireless synchronization control system respectively; The wireless synchronization control system comprises by the attainable major function of computer remote monitoring system: the lifting rotation of tank body, multipath synchronous data collection, reach late ignition, accurate ratio distribution and sample introduction, synchronously and postpone the inhibition system and spurt synchronously; Control system adopts wireless and wired two kinds of data transfer modes, can realize the separate men from machines of tank body and control system, ensures simultaneously the safe and reliable of data transmission.Be symmetrically installed with rotating mechanism in the tank body center, be used for realizing tank body 180 degree rotations, suppress experiment in order to carry out different burnings or blast and inerting thereof at the horizontal or vertical state of tank body, also make things convenient for tank body to install, clean and safeguard simultaneously.
Description of drawings
Fig. 1 is this experimental provision Functional Design schematic diagram.
Fig. 2 is experimental provision structure front schematic view.
Fig. 3 is explosion test container tank structure schematic top plan view.
Fig. 4 is that combustion explosion inhibition system consists of connection diagram.
Fig. 5 is that sampling system consists of connection diagram.
Fig. 6 is the rotating mechanism structural representation.
Fig. 7 is flame and explosion pressure radial propagation structure of the detecting device schematic diagram.
Fig. 8 is retractable electrode ignition device structure schematic diagram.
Fig. 9 is pulse firing cell operation schematic diagram.
Figure 10 is chemic ignition cell arrangement structural representation.
Figure 11 chemic ignition/thermo-fuse ignition control circuit figure.
Figure 12 is wireless synchronization control system fundamental diagram.
Figure 13 is the data acquisition system (DAS) fundamental diagram.
Figure 14 is this experimental provision experiment flow figure.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1, Fig. 2 and Fig. 3, the burning of gas cloud, blast analogue and inerting, suppress experimental provision and comprise experiment and test macro, sampling system, combustion explosion suppresses system and control system four parts, experiment comprises explosion test container tank 1 with test macro, flame and explosion pressure radial propagation pick-up unit 2, portfire 3, generate gas sampling analyser 4, the high speed schlieren system 7 and the data acquisition system (DAS) 8 that are consisted of by high-speed camera and schlieren, control system comprises wireless synchronization control system 9 and computer remote monitoring system 10, explosion test container tank 1 is right cylinder, cylindrical up and down both ends of the surface are spherical, in cylindrical both sides rotating mechanism Z is installed, be separately installed with manhole flange 1-1 and lower manhole flange 1-2 at two spherical end surfaces, and by upper manhole flange 1-1 and lower manhole flange 1-2 top manhole cover 1-3 is installed respectively and bottom manhole cover 1-4(can change), manhole cover 1-3 center, top is equipped with flange seat 1-5, be equipped with on the flange seat 1-5 for the common interface 1-6 that connects combustion explosion inhibition system, be equipped with for the sample introduction flange 1-7 that connects sampling system in the center of bottom manhole cover 1-4, on the manhole cover 1-4 of bottom, also be equipped with simultaneously for the gas sampling mouth 1-8 that connects sampling system, can realize explosion test container tank 1 is vacuumized and accurate ratio distribution in tank body by this gas sampling mouth, be symmetrically installed with heavy caliber pressure resistant quartz glass window 1-9 for the observation of high-speed photography and penetration schlieren by mounting flange respectively in both side surface center, the front and back of explosion test container tank 1, along explosion test container tank 1 tank body vertical axes to being provided with five sensor mounting flange 1-10, five temperature sensors of sets of temperature sensors 8-1() with five pressure transducers of pressure transducer group 8-2() to be separately fixed at sensor mounting flange 1-10 upper and link to each other with data acquisition system (DAS) 8, portfire 3 radially is installed in the center of explosion test container tank 1 by mounting flange, flame and explosion pressure radial propagation pick-up unit 2 are installed in the center of explosion test container tank 1 by mounting flange, and radially towards the incendiary source position of portfire 3, and be connected with data acquisition system (DAS) 8, the high speed schlieren system 7 that is made of high-speed camera and schlieren is fixed on the position with respect to described view window 1-9, generating gas sampling analyser 4 is connected on the thieff hatch of explosion test container tank 1, and be connected with data acquisition system (DAS) 8, data acquisition system (DAS) 8 is connected with computer remote monitoring system 10 by wireless synchronization control system 9.Diverse location at the inner tank wall face is provided with the installation of sensors flange, can be used for installation and the experiment test of the number of different types sensors such as temperature, pressure.
With reference to Fig. 7, flame and explosion pressure radial propagation pick-up unit 2 comprise temperature sensor or flame sensor 2-1, pressure transducer 2-2, the scalable loop bar 2-3 of sensor, wherein temperature sensor or flame sensor 2-1 and pressure transducer 2-2 are installed in respectively on the upper and lower surfaces of same position of scalable loop bar 2-3, and each sensing data transfer wire links to each other with data acquisition system (DAS) 8 by the mounting flange on the explosion test container tank 1 by scalable loop bar 2-3 is inner.
With reference to Fig. 8, portfire 3 is retractable electrode portfires, comprise spark electrode 3-1, telescopic 3-2, electrode stem 3-3, insulation course 3-4, spark electrode cap 3-5, clamping cap 3-6 and ignition lead 3-7, wherein spark electrode 3-1 links to each other with electrode stem 3-3 by electrode holding screw 3-8 and is installed in the telescopic 3-2, insulation course 3-4 is coated on the electrode stem 3-3, and utilizing clamping cap 3-6 to be fixed on the tank flange of explosion test container tank 1, ignition lead 3-7 is fixed on electrode stem 3-3 upward by spark electrode cap 3-5 and draws.When the experiment material need to adopt chemic ignition, need the upper ignition lead 3-7 that links to each other with spark electrode 3-1 of electrode stem 3-3 is replaced by the chemic ignition unit; When the experiment material need to adopt the steady temperature igniting, need that ignition lead 3-7 is replaced by the thermo-fuse igniting unit and get final product.
With reference to Fig. 9, the pulse firing unit that links to each other with the retractable electrode portfire is by photoelectrical coupler, D.C. regulated power supply, pulse producer, the IGBT driver module, inverse-excitation type high-voltage pulse module forms, ignition signal is worked through photoelectrical coupler starting impulse generator during its work, the pulse of pulse producer output is input to the IGBT driver module, in the armature winding of inverse-excitation type pulse module, produce stable pulse current, simultaneously in the secondary winding of inverse-excitation type pulse module, form high-voltage pulse, high-voltage pulse is through the spray point discharge of scalable spark electrode, realize pulse firing, when adjusting the energy of pulse firing such as need, the input voltage that only needs to adjust the pulse firing D.C. regulated power supply gets final product.
With reference to Figure 10; the chemic ignition unit is comprised of control circuit 3-7-1, substrate 3-7-2, thermo-fuse 3-7-3, phosphor coating 3-7-4, gunpowder 3-7-5, protective seam 3-7-6; make rapidly thermo-fuse 3-7-3 fusing by ignition signal Drive and Control Circuit 3-7-1 during its work; the energy that high temperature thermo-fuse fusing the produces phosphor coating 3-7-4 that ignites immediately; its burning produce power gunpowder 3-7-5 that ignites rapidly; the energy that gunpowder produces makes protective seam 3-7-6 instant exploding, forms the divergent contour chemic ignition.
The thermo-fuse igniting unit is comprised of two extraction electrodes and thermo-fuse, thermo-fuse is made of the filament of different melting points, ignition signal makes electric current pass through thermo-fuse through control circuit 3-7-1, electric current by thermo-fuse raises the temperature of thermo-fuse fast, thermo-fuse fracture when the thermo-fuse temperature reaches the fusing point that consists of the thermo-fuse material can form the thermo-fuse igniting of different temperatures.
With reference to Figure 11, chemic ignition/thermo-fuse ignition control circuit comprises IGBT driver module I; Switching Power Supply E; Chemic ignition unit/thermo-fuse igniting unit terminals T, control signal public power terminals V, ignition signal input end S and signal are inputted public negative terminal N.Ignition signal is input to the IGBT drive plate, become IGBT to drive signal through the photoelectricity isolated variable, the conducting of control IGBT high speed, the initial firing current transient flow is crossed thermo-fuse, also can ignite the simultaneously phosphor coating 3-7-4 of chemic ignition unit of hot melt wire fusing when the thermo-fuse temperature reaches melting temperature, thermo-fuse fusing-off temperature.
With reference to Fig. 5; sampling system comprises air compressor machine 5-1; high-pressure gas cylinder 5-2; stop valve 5-3; high-pressure solenoid valve 5-4; sample high pressure storage tank 5-5; the first pneumatic valve 5-6; accurate distribution flowmeter 5-7; vacuum pump bidirectional protective solenoid electric valve 5-8; vacuum pump 5-9 and fan diffuser 5-10; wherein fan diffuser 5-10 places explosion test container tank 1 inner bottom part by sample introduction flange 1-7; fan diffuser 5-10 is connected with sample high pressure storage tank 5-5 by the first pneumatic valve 5-6; sample high pressure storage tank 5-5 is connected with high-pressure gas cylinder 5-2 with stop valve 5-3 by high-pressure solenoid valve 5-4; high-pressure gas cylinder 5-2 is connected with air compressor machine 5-1; vacuum pump 5-9 is connected with described gas sampling mouth 1-8 by vacuum pump bidirectional protective solenoid electric valve 5-8, and accurate distribution flowmeter 5-7 is installed on the pipeline.
Can be respectively or realize simultaneously gas, dust, liquid separately or mix fast sample by this sampling system, and in tank, spurt and form the gas cloud.Sample high pressure storage tank internal memory is placed with powder/fluid sample and gases at high pressure, open the first pneumatic valve by wireless synchronization control system 9, gases at high pressure carry powder secretly or fluid sample sprays at a high speed the explosion test container tank by pipeline, swiftly flowing sample bump fan diffuser is realized at a high speed evenly diffusion of sample through the effect of different angles reflecting surface.
With reference to Fig. 4, combustion explosion inhibition system comprises fluid reservoir 6-1, water smoke control solenoid valve 6-2, hydraulic pamp 6-3, the second pneumatic valve 6-4, dry powder control solenoid valve 6-5, dry powder inhibitor storage tank 6-6, pressure gas control solenoid valve 6-7, high pressure tank 6-8, gas control solenoid valve 6-9, gas extinguishing agent high-pressure gas cylinder 6-10 and inhibitor shower nozzle/powder fan diffuser 6-11, wherein shower nozzle/powder fan diffuser 6-11 places in the explosion test container tank 1 by described common interface 1-6, the second pneumatic valve 6-4 is connected with shower nozzle/powder fan diffuser 6-11, the second pneumatic valve 6-4 is connected with hydraulic pamp 6-3 by water smoke control solenoid valve 6-2, hydraulic pamp 6-3 is connected with fluid reservoir 6-1, the second pneumatic valve 6-4 is connected with dry powder inhibitor storage tank 6-6 by dry powder control solenoid valve 6-5, dry powder inhibitor storage tank 6-6 is connected with high pressure tank 6-8 by pressure gas control solenoid valve 6-7, and the second pneumatic valve 6-4 is connected with gas extinguishing agent high-pressure gas cylinder 6-10 by gas control solenoid valve 6-9 again.
The second high speed pneumatic valve is connected from different restraining devices with the control solenoid valve by the four-way connector, can realize spurting respectively and spurting simultaneously of the different inhibitor of water smoke restraining device, dry powder restraining device and gas restraining device; Wherein the water smoke restraining device mainly spurts solenoid electric valve by fluid reservoir, hydraulic pamp, water smoke and waterfog head forms, the dry powder restraining device mainly is comprised of parts such as dry powder inhibitor storage tank, high pressure tank, dry powder control solenoid valve and dry powder jet pipes, and the gas restraining device mainly is comprised of gas extinguishing agent high-pressure gas cylinder, gas control solenoid valve and gas inhibitor shower nozzle.The switch of the switch by controlling the second high speed pneumatic valve and dry powder control solenoid valve, water smoke control solenoid valve, gas control solenoid valve can realize that different inhibitor fire extinguishing and inerting single or hybrid mode suppress experiment.
With reference to Fig. 6, rotating mechanism Z comprises turning axle Z-1, fixed sleeve of rotating shaft Z-2, bearing holder (housing, cover) Z-3, shaft joint Z-4, bipolar turbine worm reducer Z-5, level Four reducing motor Z-6 and lifting machine supporting plate Z-7, wherein fixed sleeve of rotating shaft Z-2 axle center is welded on described explosion test container tank 1 both sides relatively, both sides turning axle Z-1 is installed on the lifting machine supporting plate Z-7 by bearing holder (housing, cover) Z-3 respectively, one sidespin rotating shaft Z-1 is connected with bipolar turbine worm reducer Z-5 output shaft by shaft joint Z-4, and the output shaft of level Four reducing motor Z-6 links to each other with the input shaft of bipolar whirlpool worm decelerating machine Z-5.
Rotating mechanism Z is used for realizing the 180 degree rotations of explosion test tank body of container, in order to carry out different burnings or explosion suppression experiment at the horizontal or vertical state of tank body, also makes things convenient for tank body to install, clean and safeguard simultaneously; But the rotating mechanism of whole tank body by both sides is installed in the leading screw of synchronization lifting or hydraulic pressure and lifts and lift on the device J, can realize synchronous lifting and decline; At tank body sample introduction flange 1-7 end face location locking device 1-11 is installed, a sidespin rotating shaft Z-1 is equipped with worm and gear rotary self-locking device Z-8.
Explosion test container tank 1 is provided with thieff hatch, generates gas sampling analyser 4 and collects experiment generation gas by the reduction valve on the thieff hatch.Pressure relief safety valve also is installed on the explosion test container tank 1.
Referring to Figure 12, wireless synchronization control system 9 comprises receiving antenna, radio frequency amplification and modulation/demodulation modules, FSK keying coding/decoding module, central processing unit, general com interface and Switching Power Supply.The carrier signal of data receiver by antenna reception amplified through radio frequency and the modulation/demodulation modules circuit amplify process after input FSK keying coding/decoding module decode, after central processing unit is processed, change the Transistor-Transistor Logic level signal of standard into, be transferred to master control system by general com interface; Data send the data communication device that will be needed to transmit by master control system and cross general com interface and be transferred to central processing unit, being transferred to FSK keying coding/decoding module after data are processed encodes, amplify and after modulation/demodulation modules carries out the signal modulation, by antenna transmission through radio frequency.Computer remote monitoring system 10 comprises master control system, wireless energy control units, computer monitoring module and related software.Wireless energy control units comprises that antenna, radio frequency amplify and modulation/conciliation module, FSK keying coding/decoding module, central processing unit, general com interface and Switching Power Supply.
With reference to Figure 13, data acquisition system (DAS) 8 comprises multi way temperature, pressure transducer, sample circuit, high-speed synchronous A/D change-over circuit, central processing unit and the data-carrier store in the tank body, and the sensor voltage by unit separately, the synchronous conversion of current signal are also carried out exchanges data with central processing unit and master control system.
With reference to Figure 14, the concrete experiment flow of this experimental provision is: at first carry out preparing before each system experimentation of experimental provision, portfire, inhibition system, experiment and test macro and set-up of control system in duty, are determined that explosion test container tank 1 is in the required horizontal or vertical state of experiment; Laboratory sample is prepared (combustible dust or fuel oil), but combustible dust or fuel material sample are added in the sample high pressure storage tank 5-5, close stop valve 5-3, utilize air compressor machine 5-1 that the pressure gas of certain pressure is provided for high-pressure gas cylinder 5-2, and open stop valve 5-3 and high-pressure solenoid valve 5-4 provides pressure gas for sample high pressure storage tank 5-5.During the experiment sample introduction, at first open vacuum pump bidirectional protective solenoid electric valve 5-8, utilize vacuum pump 5-9 by gas sampling mouth 1-8 explosion test container tank 1 to be vacuumized.Detect the vacuum tightness requirement of the demand of reaching as pressure transducer 2-2 after, stop to vacuumize, close vacuum pump bidirectional protective solenoid electric valve 5-8 and vacuum pump 5-9.Be filled with in the explosion test container tank 1 by the matched proportion density volume ratio respectively by accurate distribution flowmeter 5-7 and gas injection port 1-8 according to inflammable gas and the oxygen of experiment needs with the laboratory sample among the sample high pressure storage tank 5-5, utilize high velocity air in explosion test container tank 1, fully to mix; Or the first high speed pneumatic valve 5-6 of unlatching sampling system, but utilize pressurized air and fan diffuser 5-10 to spurt at a high speed in the explosion test container tank 1 combustible dust among the sample high pressure storage tank 5-5 or fuel material sample, carry out flammable liquid atomizing or combustible dust and evenly spread, and then form flammable vapor cloud.
When carrying out the burning of gas cloud or explosion test, kind according to gas cloud combustible material is selected corresponding sparking mode and ignition energy, utilize pulse firing, chemic ignition or thermo-fuse sparking mode are lighted a fire to flammable vapor cloud, utilize the sets of temperature sensors 8-1 of tank internal face, temperature and explosion test container tank internal pressure that pressure transducer group 8-2 can test vertical burning or explosive flame wave front change, utilize flame and the explosion pressure radial propagation pick-up unit 2 can be to the temperature of axial burning or explosive flame wave front, pressure is tested, and utilizes high speed schlieren system 7 by big viewport observation igniting and flame propagation process; The delay time of setting according to the experiment needs simultaneously, wireless synchronization control system control portfire 3 is carried out gas cloud/oil mist combustion, blast analogue.
When carrying out explosive flame inhibition experiment, utilize as required wireless synchronization control system while or delay start portfire and inhibition system, utilize high speed schlieren system 7 by big viewport observation burning or explosion suppression experimentation phenomenon, utilize test system and test record relevant feature parameters; According to the experiment needs, can be respectively or start simultaneously gas restraining device (gas control solenoid valve 6-9 and gas extinguishing agent high-pressure gas cylinder 6-10), dry powder restraining device (dry powder control solenoid valve 6-5, dry powder inhibitor storage tank 6-6, pressure gas control solenoid valve 6-7 and high pressure tank 6-8) and water smoke restraining device (fluid reservoir 6-1, water smoke control solenoid valve 6-2 and hydraulic pamp 6-3), and by the second pneumatic valve 6-4 the inhibitor among the dry powder inhibitor storage tank 6-6 is spurted explosion test container tank 1 is interior fast by inhibitor shower nozzle/powder fan diffuser 6-11.
When carrying out flammable vapor cloud inerting experiment, utilize as required the wireless synchronization control system to start the corresponding system and device that suppresses, open the second pneumatic valve 6-4 and in the explosion test container tank 1 of the flammable vapor cloud that evenly distributes, spurt certain density inhibitor, start simultaneously the portfire 3 of corresponding energy, even distribution flammable vapor cloud in the explosion test container tank 1 is carried out positive ignition, utilize high speed schlieren system 7 experimental phenomenas such as burning or blast whether to occur by big viewport observation igniting; Utilize simultaneously experiment and test system and test record relevant feature parameters, estimate the inhibitor inerting inhibition of this concentration.
Claims (7)
1. gas cloud burning, blast analogue and inerting, suppress experimental provision, it is characterized in that: comprise experiment and test macro, sampling system, combustion explosion suppresses system and control system four parts, experiment comprises explosion test container tank (1) with test macro, flame and explosion pressure radial propagation pick-up unit (2), portfire (3), generate gas sampling analyser (4), the high speed schlieren system (7) and the data acquisition system (DAS) (8) that are consisted of by high-speed camera and schlieren, test control system comprises wireless synchronization control system (9) and computer remote monitoring system (10), described explosion test container tank (1) is right cylinder, cylindrical up and down both ends of the surface are spherical, rotating mechanism (Z) is installed in cylindrical both sides, be separately installed with manhole flange (1-1) and lower manhole flange (1-2) at two spherical end surfaces, and by upper manhole flange (1-1) and lower manhole flange (1-2) top manhole cover (1-3) and bottom manhole cover (1-4) are installed respectively, top manhole cover (1-3) center is equipped with flange seat (1-5), be equipped with on the flange seat (1-5) for the common interface (1-6) that connects combustion explosion inhibition system, be equipped with for the sample introduction flange (1-7) that connects sampling system in the center of bottom manhole cover (1-4), on bottom manhole cover (1-4), also be equipped with simultaneously for the gas sampling mouth (1-8) that connects sampling system, be symmetrically installed with view window (1-9) for high-speed photography and the observation of penetration schlieren by mounting flange respectively in the both side surface center, front and back of explosion test container tank (1), along explosion test container tank (1) tank body vertical axes to being provided with sensor mounting flange (1-10), sets of temperature sensors (8-1) is fixed on sensor mounting flange (1-10) with pressure transducer group (8-2) and upward and with data acquisition system (DAS) (8) links to each other, described portfire (3) radially is installed in the center of explosion test container tank (1) by mounting flange, described flame and explosion pressure radial propagation pick-up unit (2) are installed in the center of explosion test container tank (1) by mounting flange, and radially towards the incendiary source position of portfire (3), and be connected with data acquisition system (DAS) (8), the described high speed schlieren system (7) that is made of high-speed camera and schlieren is fixed on the position with respect to described view window (1-9), described generation gas sampling analyser (4) is connected on the thieff hatch of explosion test container tank (1) by reduction valve, and be connected with data acquisition system (DAS) (8), data acquisition system (DAS) (8) is connected with computer remote monitoring system (10) by wireless synchronization control system (9).
2. gas cloud burning according to claim 1, blast analogue and inerting, suppress experimental provision, it is characterized in that: described flame and explosion pressure radial propagation pick-up unit (2) comprise temperature sensor or flame sensor (2-1), pressure transducer (2-2), the scalable loop bar of sensor (2-3), wherein temperature sensor or flame sensor (2-1) and pressure transducer (2-2) are installed in respectively on the upper and lower surfaces of same position of scalable loop bar (2-3), and each sensing data transfer wire links to each other with data acquisition system (DAS) (8) by the mounting flange on the explosion test container tank (1) by scalable loop bar (2-3) is inner.
3. gas cloud burning according to claim 1, blast analogue and inerting, suppress experimental provision, it is characterized in that: described portfire (3) is the retractable electrode portfire, comprise spark electrode (3-1), telescopic (3-2), electrode stem (3-3), insulation course (3-4), spark electrode cap (3-5), clamping cap (3-6) and ignition lead (3-7), wherein spark electrode (3-1) links to each other with electrode stem (3-3) and is installed in the telescopic (3-2), insulation course (3-4) is coated on the electrode stem (3-3), and utilizing clamping cap (3-6) to be fixed on the tank flange of explosion test container tank (1), ignition lead (3-7) is fixed on electrode stem (3-3) upward by spark electrode cap (3-5) and draws.
4. gas cloud burning according to claim 1; blast analogue and inerting; suppress experimental provision; it is characterized in that: described sampling system comprises air compressor machine (5-1); high-pressure gas cylinder (5-2); stop valve (5-3); high-pressure solenoid valve (5-4); sample high pressure storage tank (5-5); the first pneumatic valve (5-6); accurate distribution flowmeter (5-7); vacuum pump bidirectional protective solenoid electric valve (5-8); vacuum pump (5-9) and fan diffuser (5-10); wherein fan diffuser (5-10) places explosion test container tank (1) inner bottom part by described sample introduction flange (1-7); fan diffuser (5-10) is connected with sample high pressure storage tank (5-5) by the first pneumatic valve (5-6); sample high pressure storage tank (5-5) is connected 5-3 by high-pressure solenoid valve (5-4) with stop valve) be connected with high-pressure gas cylinder (5-2); high-pressure gas cylinder (5-2) is connected with air compressor machine (5-1); vacuum pump (5-9) is connected with described gas sampling mouth (1-8) by vacuum pump bidirectional protective solenoid electric valve (5-8), and accurate distribution flowmeter (5-7) is installed on the pipeline.
5. gas cloud burning according to claim 1, blast analogue and inerting, suppress experimental provision, it is characterized in that: described combustion explosion inhibition system comprises fluid reservoir (6-1), water smoke control solenoid valve (6-2), hydraulic pamp (6-3), the second pneumatic valve (6-4), dry powder control solenoid valve (6-5), dry powder inhibitor storage tank (6-6), pressure gas control solenoid valve (6-7), high pressure tank (6-8), gas control solenoid valve (6-9), gas extinguishing agent high-pressure gas cylinder (6-10) and shower nozzle/powder fan diffuser (6-11), wherein shower nozzle/powder fan diffuser (6-11) places in the explosion test container tank (1) by described common interface (1-6), the second high speed pneumatic valve (6-4) is connected with shower nozzle/powder fan diffuser (6-11), the second pneumatic valve (6-4) is connected with hydraulic pamp (6-3) by water smoke control solenoid valve (6-2), hydraulic pamp (6-3) is connected with fluid reservoir (6-1), the second pneumatic valve (6-4) is connected with dry powder inhibitor storage tank (6-6) by dry powder control solenoid valve (6-5), dry powder inhibitor storage tank (6-6) is connected with high pressure tank (6-8) by pressure gas control solenoid valve (6-7), and the second pneumatic valve (6-4) is connected with gas extinguishing agent high-pressure gas cylinder (6-10) by gas control solenoid valve (6-9) again.
6. gas cloud burning according to claim 1, blast analogue and inerting, suppress experimental provision, it is characterized in that: described rotating mechanism (Z) comprises turning axle (Z-1), fixed sleeve of rotating shaft (Z-2), bearing holder (housing, cover) (Z-3), shaft joint (Z-4), bipolar turbine worm reducer (Z-5), level Four reducing motor (Z-6) and lifting machine supporting plate (Z-7), wherein fixed sleeve of rotating shaft (Z-2) axle center is welded on described explosion test container tank (1) both sides relatively, both sides turning axle (Z-1) is installed on the lifting machine supporting plate (Z-7) by bearing holder (housing, cover) (Z-3) respectively, one sidespin rotating shaft (Z-1) is connected with bipolar turbine worm reducer (Z-5) output shaft by shaft joint (Z-4), and the output shaft of level Four reducing motor (Z-6) links to each other with the input shaft of bipolar whirlpool worm decelerating machine (Z-5).
7. the experimental technique of according to claim 1, claim 2, claim 3, claim 4, claim 5 or gas cloud claimed in claim 6 burning, blast analogue and inerting, inhibition experimental provision may further comprise the steps:
(1). at first utilize vacuum pump to vacuumize in the explosion test container tank, be filled with in the explosion test container tank by the matched proportion density volume ratio respectively according to inflammable gas and the oxygen of experiment needs with laboratory sample, utilize high velocity air in the explosion test container tank, fully to mix; Or but combustible dust or the fuel material sample of experiment utilized pressurized air to spurt at a high speed in the explosion test container tank to form flammable vapor cloud;
(2). when carrying out the burning of gas cloud or explosion test, kind according to gas cloud combustible material is selected corresponding sparking mode and ignition energy, utilize pulse firing, chemic ignition or thermo-fuse sparking mode that flammable vapor cloud is lighted a fire, and adjust the pulse firing energy by the regulating impulse ignition voltage, the igniting of realization different-energy utilizes temperature, pressure transducer test burning or explosive flame temperature and explosion test container tank internal pressure to change;
(3). when carrying out explosive flame inhibition experiment, utilize as required wireless synchronization control system while or delay start portfire and inhibition system, by big viewport observation burning or explosion suppression experimentation phenomenon, utilize test system and test record relevant feature parameters;
(4). when carrying out flammable vapor cloud inerting experiment, then in the explosion test container tank of the flammable vapor cloud that distributes, time-delay or spurt synchronously the inerting inhibitor of respective concentration, adopt different-energy or sparking mode to carry out positive ignition, by the experimental observation of view window and test macro, inhibitor inerting inhibition is carried out evaluation analysis.
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| CN114397061B (en) * | 2021-12-15 | 2024-04-26 | 中国矿业大学 | Online maintenance and self-checking system and method for explosion suppression device |
| CN115032325A (en) * | 2022-04-12 | 2022-09-09 | 北京理工大学 | Device and method for researching spontaneous combustion of magnesium powder |
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| CN102879416B (en) | 2014-04-23 |
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Address after: No. 110 Wei Jinnan Road, Nankai District, Tianjin Co-patentee after: Jilin Hongyuan Science Instrument Co., Ltd. Patentee after: Tianjin Institute of Fire Protection, Ministry of Emergency Management Address before: No. 110 Wei Jinnan Road, Nankai District, Tianjin Co-patentee before: Jilin Hongyuan Science Instrument Co., Ltd. Patentee before: Tianjin Fire Fighting Inst., Ministry of Public Security |