CN104849311B - Two-fluid inerting water mists inhibit pipeline gas explosion experimental provision and experimental method - Google Patents
Two-fluid inerting water mists inhibit pipeline gas explosion experimental provision and experimental method Download PDFInfo
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- CN104849311B CN104849311B CN201510264637.6A CN201510264637A CN104849311B CN 104849311 B CN104849311 B CN 104849311B CN 201510264637 A CN201510264637 A CN 201510264637A CN 104849311 B CN104849311 B CN 104849311B
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Abstract
The present invention relates to a kind of two-fluid inerting water mists to inhibit pipeline gas explosion experimental provision and experimental method,It can effectively solve the problems, such as that carrying out two-fluid inerting water mists inhibits pipeline gas explosion analysis of simulation experiment,Technical solution is,Including transparent organic glass pipe,Water tank,Inert gas bottle,Air bottle and methane gas cylinder,The bleeder pipe being connected with its inner cavity is respectively arranged on lucite tube,The air inlet pipe being connected with its inner cavity,Induction end stretches into the temperature sensor of organic glass tube cavity,Induction end stretches into the pressure sensor of organic glass tube cavity,Ejection end stretches into the two-fluid nozzle of organic glass tube cavity and firing tip stretches into the high-voltage pulses device of organic glass tube cavity,Experimental provision structure novel of the present invention is unique,Advantages of simple,Experimental method is simple,Experimentation is stablized,Intuitively,Application method easy operation control,Atomization quantity is realized by adjusting storage pressure,Effectiveness of explosion suppression is good.
Description
Technical field
The present invention relates to fire safety evaluating experimental provision, especially a kind of two-fluid inerting water mists inhibit pipeline gas explosion
Experimental provision and experimental method.
Background technology
Gas is widely present in coal bed gas, mine ventilation gas and chemical industry gas, in mine laneway, gas pipeline and storage
Often become China's one of safety problem of greatest concern because leakage causes explosion disaster in gas equipment.As social development is to suppression
Quick-fried technology has gone out requirements at the higher level, i.e., while datonation-inhibition, it is desirable that and it is environmentally friendly, pollution-free to processing medium, therefore study clear
Clean, efficient datonation-inhibition technology is imperative.
Inert gas and water mists are all common economy, the environmentally friendly quick-fried material of fire extinguishing control.Currently, corresponding indifferent gas
Body, water mist explosion suppression device are in fields such as the protection of liquefied petroleum, natural gas storage tank and pipeline transportation, coal mine gas anti-explosion explosion-suppressions
There are Preliminary Applications.However, due to inert gas is datonation-inhibition, fire extinguishing when need higher concentration, such as CO2Fire extinguishing system is set
Meter is at concentrations up to 34%, goaf N2O when inhibition gas explosion2Concentration index requires to be less than 12%, and when application generally requires big
Measure gas cylinder group, complicated pipeline etc..Water mists for it is datonation-inhibition practice be mainly single-fluid water mist (pure water mist), atomization according to
It realizes with nozzle arrangements by control hydraulic pressure height, for long ranges restricted clearances such as coal mine roadway, industrial gasses pipelines, needs
High voltage power source, effectiveness of explosion suppression are influenced by factors such as water mist grain size, concentration, water mist section lengths, these factors limit lazy
The application of property gas and the datonation-inhibition technology of water mists.
Two-fluid inerting water mists refer to that water mists and inert gas are delivered to explosive region by two-fluid spray nozzle
A kind of explosion-suppressing method of water.Forefathers are studies have shown that with more apparent compared with the datonation-inhibition effect of subtle droplet that small specific surface accumulates, and with lazy
Property gas as diluent gas, the good spatial dispersion of inert gas can accelerate the dispersibility and dispersivity of droplet, comprehensive hair
Inert gas and the datonation-inhibition advantage of water mists are waved, datonation-inhibition syneryistic effect is generated.And at present still without report for how to utilize
Two-fluid inerting water mists inhibit the experimental provision and experimental method of pipeline gas explosion.
Invention content
For the above situation, to overcome the defect of the prior art, the purpose of the present invention to be just to provide a kind of two-fluid inerting
Water mists inhibit pipeline gas explosion experimental provision and experimental method, can effectively solve to carry out two-fluid inerting water mists inhibition pipe
The problem of road gas explosion analysis of simulation experiment.
The technical solution that the present invention solves is,
A kind of two-fluid inerting water mists inhibition pipeline gas explosion experimental provision, including transparent organic glass pipe, water
Case, inert gas bottle, air bottle and methane gas cylinder, lucite tube are the hollow structure of one end open, are provided on oral area
For the PVC film of sealing, it is respectively arranged with the bleeder pipe being connected with its inner cavity on lucite tube, is connected with its inner cavity
Air inlet pipe, induction end stretches into the temperature sensor of organic glass tube cavity, induction end stretches into the pressure of organic glass tube cavity
Sensor, ejection end stretch into the two-fluid nozzle of organic glass tube cavity and firing tip stretches into the high pressure of organic glass tube cavity
The gas outlet of pulse igniter, inert gas bottle is connected through solenoid valve with the air inlet of two-fluid nozzle, the water outlet of water tank with
The inlet of two-fluid nozzle is connected, the first check (non-return) valve and the first mass flow controller that the gas outlet of air bottle is concatenated with
The air inlet of air inlet pipe is connected, the second check (non-return) valve and the second mass flow controller that methane gas cylinder is concatenated and air inlet pipe into
Gas port is connected, and is provided with that be provided on the ignitor of induction end face high-voltage pulses device can on high-voltage pulses device
Incude the photoelectric sensor of its fired state, the signal output end of photoelectric sensor is connected with the signal input part of video camera, takes the photograph
Camera, solenoid valve, temperature sensor and pressure sensor signal output end respectively with the signal input part phase of data collecting instrument
Even, the signal output end of data collecting instrument is connected with computer.
A kind of two-fluid inerting water mists inhibition pipeline gas explosion experimental method, includes the following steps：
One, install experimental rig, experimental rig include transparent organic glass pipe, water tank, inert gas bottle, air bottle and
Methane gas cylinder, lucite tube are the hollow structure of one end open, and the PVC film for sealing is provided on oral area, organic
The air inlet pipe for being respectively arranged with the bleeder pipe being connected with its inner cavity on glass tube, being connected with its inner cavity, induction end have stretched into
The temperature sensor of machine glass tube cavity, induction end stretch into the pressure sensor of organic glass tube cavity, ejection end stretch into it is organic
The two-fluid nozzle and firing tip of glass tube cavity stretch into the high-voltage pulses device of organic glass tube cavity, inert gas bottle
Gas outlet be connected with the air inlet of two-fluid nozzle through solenoid valve, the water outlet of water tank and the inlet phase of two-fluid nozzle
Even, the first check (non-return) valve and the first mass flow controller that the gas outlet of air bottle is concatenated are connected with the air inlet of air inlet pipe,
The second check (non-return) valve and the second mass flow controller that methane gas cylinder is concatenated are connected with the air inlet of air inlet pipe, high-voltage pulse point
It is provided on firearm on the ignitor of induction end face high-voltage pulses device and is provided with the light that can incude its fired state
Electric transducer, the signal output end of photoelectric sensor are connected with the signal input part of video camera, and video camera, solenoid valve, temperature pass
The signal output end of sensor and pressure sensor is connected with the signal input part of data collecting instrument respectively, the signal of data collecting instrument
Output end is connected with computer；It is provided with air bleeding valve on the bleeder pipe；Between the solenoid valve and two-fluid nozzle
Flowmeter is provided on pipeline；
Two, video camera is opened, pressure sensor, temperature sensor and photoelectric sensor are turned on power supply, data collecting instrument
Connection computer simultaneously opens 2009 data acquisition softwares of Labview, and before carrying out explosive test, it is soft to have debugged data acquisition
Simultaneously trial operation is primary for part, checks software whether normal operation, to ensure that obtained experimental data is accurate, adjustment video camera phase seat in the plane
It sets, makes its camera lens face lucite tube, adjust camera lens focal length, and once captured, to ensure the figure of shooting arrived
Piece is clear, so that the later stage carries out picture processing；
Three, air bleeding valve, first check-valve and second check-valve are opened, machine glass tube chamber is passed through to organic glass tube chamber
The mixed gas of the methane and air of 4 times of volumes, to drain original air in organic glass tube chamber, close air bleeding valve,
First check-valve and second check-valve；
Four, two-fluid inerting water mists are carried out and inhibit gas explosion test, solenoid valve control two-fluid nozzle is opened and starts
Spraying sets inert gas pressure and spray time；
Five, gas explosion experiment test is carried out, is lighted a fire by high-voltage pulses device voltage, moment photoelectric sensor captures
Electric spark that ignitor is sent out simultaneously is converted into electric signal, triggers camera operation, while utilizing temperature sensor, pressure sensing
Device monitors flame temperature and blast pressure variation；
Six, the explosive flame picture that storage temperature data, pressure data and video camera are shot；4 times of air are passed through, pipe is emptied
Gas in road cavity is ready for testing next time；
Seven, the explosive flame picture of high-speed camera shooting is handled, obtains flame front velocity；
Eight, evaluation analysis is carried out to inhibitor inerting inhibition.
Experimental provision structure novel of the present invention is unique, and advantages of simple, experimental method is simple, and experimentation is stablized, intuitively, can
Coal mine, the existing inert gas duct of industrial enterprise, waterway pipe are directly utilized, the explosion-proof control of inflammable gas pipeline is suitable for
Fire；Two-fluid spray nozzle is simple in structure, takes up space small, easy for installation, application method easy operation control, and atomization quantity is by adjusting gas
Bottle pressure realizes that effectiveness of explosion suppression is good, and effect easy to use is good, is the innovation on gas explosion experimental provision.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below in conjunction with attached drawing.
It is provided by Fig. 1, a kind of two-fluid inerting water mists of the present invention inhibit pipeline gas explosion experimental provision, including transparent
Lucite tube, water tank, inert gas bottle, air bottle and methane gas cylinder, lucite tube 10 be one end open hollow knot
Structure is provided with the PVC film 20 for sealing on oral area, and putting of being connected with its inner cavity is respectively arranged on lucite tube
Tracheae 5, the air inlet pipe 17 being connected with its inner cavity, induction end stretches into the temperature sensor 7 of organic glass tube cavity, induction end is stretched
Enter the pressure sensor 8 of organic glass tube cavity, ejection end stretches into the two-fluid nozzle 6 and firing tip of organic glass tube cavity
The high-voltage pulses device 12 of organic glass tube cavity is stretched into, the gas outlet of inert gas bottle 4 is through solenoid valve 3 and two-fluid nozzle
6 air inlet is connected, and the water outlet of water tank 1 is connected with the inlet of two-fluid nozzle 6, what the gas outlet of air bottle 14 was concatenated
First check (non-return) valve 13a and the first mass flow controller 11a are connected with the air inlet of air inlet pipe 17, what methane gas cylinder 15 was concatenated
Second check (non-return) valve 13b and the second mass flow controller 11b are connected with the air inlet of air inlet pipe 17, on high-voltage pulses device 12
It is provided on the ignitor of induction end face high-voltage pulses device and is provided with the photoelectric sensing that can incude its fired state
The signal output end of device 9, photoelectric sensor 9 is connected with the signal input part of video camera 16, and video camera 16, solenoid valve 3, temperature pass
The signal output end of sensor 7 and pressure sensor 8 is connected with the signal input part of data collecting instrument 18 respectively, data collecting instrument 18
Signal output end be connected with computer 19.
Air bleeding valve 5a is provided on the bleeder pipe；
It is provided with flowmeter 2 on pipeline between the solenoid valve 3 and two-fluid nozzle 6；
The lucite tube is the organic transparent glass tube of transverse direction of 120mm × 120mm × 840mm, and dischargeable capacity is
12.096L, it is one side closed, it is provided with pedestal on tube body, the datonation-inhibition experiment of inerting of horizontal or vertical different conditions can be carried out, to protect
Personnel safety is tested in confirmation, and the other end is sealed by PVC film, and explosion time rupture has the function that pressure release；
The video camera 16 is the high-speed camera of 2000 frame of shooting speed/s or more to capture in methane blast process
Flame profile and flame front position；
The two-fluid nozzle 6 is commercial product (prior art), such as the BIM series siphons of Chi Nei companies of Japan production
Decline atomizing nozzle, 20-40 nanometers of mist droplet particle size range；
The data collecting instrument 18 is commercial product (prior art), the model USB-1608FS produced such as MC companies
The data collecting card of Plus types, can the acquisition of collecting temperature sensor, temperature of the pressure sensor in methane blast process and
The picture signal of time signal and camera acquisition that pressure signal, solenoid valve are opened and closed, and pass through data collecting card
Transfer data to computer；
The high-pressure pulsating igniter 12 is commercial product (prior art), as Xi'an is limited along safe thermal technology's electromechanical equipment
The high thermal energy igniter of HEI19 series of company's production；Ignition voltage is 6KV.
A kind of two-fluid inerting water mists inhibition pipeline gas explosion experimental method, includes the following steps：
One, experimental rig is installed, experimental rig includes transparent organic glass pipe 10, water tank 1, inert gas bottle 4, air
Bottle 4 and methane gas cylinder 5, lucite tube 10 are the hollow structure of one end open, are provided on oral area thin for the PVC of sealing
Film 20 is respectively arranged with the bleeder pipe 5 being connected with its inner cavity, the air inlet pipe being connected with its inner cavity 17 on lucite tube,
Induction end stretches into the temperature sensor 7 of organic glass tube cavity, induction end stretch into organic glass tube cavity pressure sensor 8,
Ejection end stretches into the two-fluid nozzle 6 of organic glass tube cavity and firing tip stretches into the high-voltage pulse point of organic glass tube cavity
The gas outlet of firearm 12, inert gas bottle 4 is connected through solenoid valve 3 with the air inlet of two-fluid nozzle 6, the water outlet of water tank 1 with
The inlet of two-fluid nozzle 6 is connected, the first check (non-return) valve 13a and the first mass flow control that the gas outlet of air bottle 14 is concatenated
Device 11a processed is connected with the air inlet of air inlet pipe 17, the second check (non-return) valve 13b and the second mass flow control that methane gas cylinder 15 is concatenated
Device 11b processed is connected with the air inlet of air inlet pipe 17, and induction end face high-voltage pulses are provided on high-voltage pulses device 12
The photoelectric sensor 9 of its fired state can be incuded by being provided on the ignitor of device, the signal output end of photoelectric sensor 9 with
The signal input part of video camera 16 is connected, the signal output of video camera 16, solenoid valve 3, temperature sensor 7 and pressure sensor 8
End is connected with the signal input part of data collecting instrument 18 respectively, and the signal output end of data collecting instrument 18 is connected with computer 19；
Air bleeding valve 5a is provided on the bleeder pipe；It is provided with flow on pipeline between the solenoid valve 3 and two-fluid nozzle 6
Meter 2；
Two, video camera is opened, pressure sensor, temperature sensor and photoelectric sensor are turned on power supply, data collecting instrument
Connection computer simultaneously opens 2009 data acquisition softwares of Labview, and before carrying out explosive test, it is soft to have debugged data acquisition
Simultaneously trial operation is primary for part, checks software whether normal operation, to ensure that obtained experimental data is accurate, adjustment video camera phase seat in the plane
It sets, makes its camera lens face lucite tube, adjust camera lens focal length, and once captured, to ensure the figure of shooting arrived
Piece is clear, so that the later stage carries out picture processing；
Three, air bleeding valve, first check-valve and second check-valve are opened, machine glass tube chamber is passed through to organic glass tube chamber
The mixed gas of the methane and air of 4 times of volumes, the volumetric concentration of wherein methane remain 9.5%；To drain organic glass
Original air in tube chamber closes air bleeding valve, first check-valve and second check-valve；Quality stream can be set in practical operation
After the parameter of amount controller；The gas volume amount being filled with come control according to its flow and time；
Four, two-fluid inerting water mists are carried out and inhibit gas explosion test, solenoid valve control two-fluid nozzle is opened and starts
Spraying sets inert gas pressure and spray time；
Five, gas explosion experiment test is carried out, is lighted a fire by high-voltage pulses device voltage, moment photoelectric sensor captures
Electric spark that ignitor is sent out simultaneously is converted into electric signal, triggers camera operation, while utilizing temperature sensor, pressure sensing
Device monitors flame temperature and blast pressure variation；
Six, after igniting successfully, storage temperature data, pressure data and high-speed camera shooting explosive flame picture；It is logical
Enter 4 times of air, empties gas in tube cavity, be ready for testing next time；
Seven, the explosive flame picture of high-speed camera shooting is handled, obtains flame front velocity, it is specific to calculate public affairs
Formula is：
Wherein：
L pipeline total lengths, unit, mm；
zf,allFlame propagation direction picture pixel value, pixel；
Pixel value at i moment flame fronts, pixel；
tiFlame front reaches the time at i, ms.
Eight, evaluation analysis is carried out to inhibitor inerting inhibition, it is specific to evaluate explosion overpressure peak value, maximum flame speed
Etc. important explosion hazard evaluation parameter.
Such as explosion overpressure peak value and maximum flame speed are to evaluate two important parameters of explosion hazard.
In order to compare the effectiveness of explosion suppression of two-fluid inerting water mists, by all experimental results with volumetric concentration 9.5%
The explosive parameters of pure methane premix gas are compared, and wherein lucite tube maximum explosion overpressure is 292.3407mbar.Wherein,
Two-fluid sprinkler pressure is 0.2Mpa, and when 0.3Mpa, 0.4Mpa, inert gas consumption is respectively 0.45L/s, 0.6L/s,
0.77L/s, maximum spray rate are respectively 0.67mL/s, 0.64mL/s, 0.53mL/s.According to the time is passed through, can obtain lazy
Property gas occupies machine glass tube percent by volume number, and concrete outcome is as shown in following table 1-5.
1 two-fluid spray nozzle of table is passed through inert gas and accounts for conduit volume score
2 independent CO of table2The influence for peak overpressure of exploding to methane
Influence (wherein superfine spray spray rate of the 3 independent superfine spray spray time of table to methane explosion peak overpressure
For 0.42mL/min)
Table 4 contains CO2Two-fluid inerting water mists to methane explode peak overpressure influence
Table 5 contains CO2Two-fluid inerting water mists explode to methane the influence of maximum flame propagation velocity
It is apparent that the two-fluid water mists effectiveness of explosion suppression containing noble gases such as N2, CO2 is can be seen that by above-mentioned test result, with
The extension of spray time, the velocity peak values of explosive flame are gradually reduced, when sprayed between be more than 3s when, can not through repeatedly lighting a fire
It ignites.Compared with pure inert gas, water mists are datonation-inhibition, two-fluid inerting water mists have played the datonation-inhibition of inert gas and water mists
Advantage significantly reduces noble gas concentration and the dosage of water mists, and datonation-inhibition for restricted clearances such as industrial pipelines has centainly now
Net price value.
By the above situation it should be apparent that compared with prior art, the present invention has the following advantages：
(1) igniting, pressure, temperature, the synchronous control of flame monitoring are realized；
(2) it is not necessarily to vacuumize experiment cavity, the ratio distribution of premixed gas is quick, method is simple, and working efficiency improves 2
Times or more；
(3) two-fluid fine mist spray head uses pneumatic hydrocone type, buys two-fluid fine mist spray head for common commercial, easily purchases
, it is not necessarily to water pump facility；
(4) spraying can be spurted by remote control solenoid valve pressure, and adjust mist droplet particle size by controlling storage pressure, can
By property height, water consumption is few；
(5) it is provided with pedestal on lucite tube, the datonation-inhibition experiment of inerting of horizontal or vertical different conditions can be carried out.
Applicant is not meant to limit this Shen it is noted that a kind of above-mentioned only embodiment pointed out of the application
Protection domain please, it is every to be made and technical scheme technical side of the same nature with equivalent or equivalent substitute means
Case belongs to the protection domain of the application.
Claims (4)
1. a kind of two-fluid inerting water mists inhibit pipeline gas explosion experimental provision, including transparent organic glass pipe, water tank,
Inert gas bottle, air bottle and methane gas cylinder, which is characterized in that lucite tube（10）For the hollow structure of one end open,
The PVC film for sealing is provided on oral area（20）, the deflation being connected with its inner cavity is respectively arranged on lucite tube
Pipe（5）, the air inlet pipe that is connected with its inner cavity（17）, induction end stretch into the temperature sensor of organic glass tube cavity（7）, induction
The pressure sensor of organic glass tube cavity is stretched at end（8）, ejection end stretch into the two-fluid nozzle of organic glass tube cavity（6）With
And firing tip stretches into the high-voltage pulses device of organic glass tube cavity（12）, inert gas bottle（4）Gas outlet through solenoid valve
（3）With two-fluid nozzle（6）Air inlet be connected, water tank（1）Water outlet and two-fluid nozzle（6）Inlet be connected, it is empty
Gas cylinder（14）The first check (non-return) valve for being concatenated of gas outlet（13a）With the first mass flow controller（11a）With air inlet pipe（17）
Air inlet be connected, methane gas cylinder（15）The second check (non-return) valve being concatenated（13b）With the second mass flow controller（11b）With into
Tracheae（17）Air inlet be connected, photoelectric sensor（9）Induction end face high-voltage pulses device（12）Ignitor, light
Electric transducer（9）High-voltage pulses device can be incuded（12）Fired state, photoelectric sensor（9）Signal output end with take the photograph
Camera（16）Signal input part be connected, video camera（16）, solenoid valve（3）, temperature sensor（7）And pressure sensor（8）'s
Signal output end respectively with data collecting instrument（18）Signal input part be connected, data collecting instrument（18）Signal output end and meter
Calculation machine（19）It is connected；The two-fluid nozzle（6）20-40 μm of mist droplet particle size range.
2. two-fluid inerting water mists according to claim 1 inhibit pipeline gas explosion experimental provision, which is characterized in that
It is provided with air bleeding valve on the bleeder pipe（5a）.
3. two-fluid inerting water mists according to claim 1 inhibit pipeline gas explosion experimental provision, which is characterized in that
The solenoid valve（3）With two-fluid nozzle（6）Between pipeline on be provided with flowmeter（2）.
4. a kind of two-fluid inerting water mists using experimental provision described in claim 1 inhibit pipeline gas explosion experiment side
Method, which is characterized in that include the following steps：
One, experimental provision is installed, experimental provision includes transparent organic glass pipe（10）, water tank（1）, inert gas bottle（4）, it is empty
Gas cylinder（14 ）With methane gas cylinder（15）, lucite tube（10）For the hollow structure of one end open, it is provided with and is used on oral area
The PVC film of sealing（20）, the bleeder pipe being connected with its inner cavity is respectively arranged on lucite tube（5）, with its inner cavity phase
The air inlet pipe of connection（17）, induction end stretch into the temperature sensor of organic glass tube cavity（7）, induction end stretch into lucite tube
The pressure sensor of inner cavity（8）, ejection end stretch into the two-fluid nozzle of organic glass tube cavity（6）And firing tip stretch into it is organic
The high-voltage pulses device of glass tube cavity（12）, inert gas bottle（4）Gas outlet through solenoid valve（3）With two-fluid nozzle
（6）Air inlet be connected, water tank（1）Water outlet and two-fluid nozzle（6）Inlet be connected, air bottle（14）Gas outlet
The first check (non-return) valve being concatenated（13a）With the first mass flow controller（11a）With air inlet pipe（17）Air inlet be connected, methane
Gas cylinder（15）The second check (non-return) valve being concatenated（13b）With the second mass flow controller（11b）With air inlet pipe（17）Air inlet
It is connected, photoelectric sensor（9）Induction end face high-voltage pulses device（12）Ignitor, photoelectric sensor（9）It can
Incude high-voltage pulses device（12）Fired state, photoelectric sensor（9）Signal output end and video camera（16）Signal
Input terminal is connected, video camera（16）, solenoid valve（3）, temperature sensor（7）And pressure sensor（8）Signal output end difference
With data collecting instrument（18）Signal input part be connected, data collecting instrument（18）Signal output end and computer（19）It is connected；
It is provided with air bleeding valve on the bleeder pipe（5a）；The solenoid valve（3）With two-fluid nozzle（6）Between pipeline on be arranged
There is flowmeter（2）；The two-fluid nozzle（6）20-40 μm of mist droplet particle size range；
Two, video camera is opened, pressure sensor, temperature sensor and photoelectric sensor are turned on power supply, data collecting instrument connection
Computer simultaneously opens 2009 data acquisition softwares of Labview and has debugged data acquisition software simultaneously before carrying out explosive test
Trial operation is primary, checks software whether normal operation, to ensure that obtained experimental data is accurate, adjusts video camera camera position,
Make its camera lens face lucite tube, adjust camera lens focal length, and once captured, the picture arrived to ensure shooting is clear
It is clear, so that the later stage carries out picture processing；
Three, air bleeding valve, the first check (non-return) valve and the second check (non-return) valve are opened, 4 times of machine glass tube chamber is passed through to organic glass tube chamber
The methane of volume and the mixed gas of air close air bleeding valve, first to drain original air in organic glass tube chamber
Check (non-return) valve and the second check (non-return) valve；
Four, two-fluid inerting water mists are carried out and inhibit gas explosion test, solenoid valve control two-fluid nozzle is opened and starts to spray,
Set inert gas pressure and spray time；
Five, gas explosion experiment test is carried out, is lighted a fire by high-voltage pulses device voltage, moment photoelectric sensor captures igniting
Electric spark that electrode is sent out simultaneously is converted into electric signal, triggers camera operation, while supervising using temperature sensor, pressure sensor
Survey flame temperature and blast pressure variation；
Six, the explosive flame picture that storage temperature data, pressure data and video camera are shot；4 times of air are passed through, duct chamber is emptied
Internal gas is ready for testing next time；
Seven, the explosive flame picture of high-speed camera shooting is handled, obtains flame front velocity；
Eight, evaluation analysis is carried out to inhibitor inerting inhibition.
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| CN112169242B (en) * | 2020-11-30 | 2022-04-26 | 河南理工大学 | Composite gas-liquid two-phase fire extinguishing agent for inhibiting flame enhancement at initial stage of water mist fire extinguishing |
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