CN106840588A - A kind of heavy gas leakage diffusion simulations and suppression control test system - Google Patents
A kind of heavy gas leakage diffusion simulations and suppression control test system Download PDFInfo
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- CN106840588A CN106840588A CN201710142195.7A CN201710142195A CN106840588A CN 106840588 A CN106840588 A CN 106840588A CN 201710142195 A CN201710142195 A CN 201710142195A CN 106840588 A CN106840588 A CN 106840588A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
- G01M9/067—Measuring arrangements specially adapted for aerodynamic testing dealing with flow visualisation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
Abstract
The invention discloses a kind of heavy gas leakage diffusion simulations and suppression control test system, including experimental wind tunnel, gas is filled and recovering mechanism again, suppress control unit and data acquisition unit, again gas filling with recovering mechanism to filling gas again in experimental wind tunnel, and reclaim cryogenic liquid, natural environment analogue unit is provided with experimental wind tunnel, to adjust the natural environment parameter in experimental wind tunnel, the gas again of injection is in experimental wind tunnel by suppressing the water curtain control test that control unit is carried out, after high power foam control test and/or barrier test, the configured monitoring lattice array in experimental wind tunnel downstream of its control effect is obtained.The present invention can influence key factor, the influence degree of evaporation rate and Release and dispersion steam temperature, concentration and distribution with sunykatuib analysis again gas under different leakage size shaped positions, temperature, humidity, wind speed, radiation and active and passive control, the observation extraction and analysis of minor detail, follow the trail of matter energy whereabouts, study mechanism is carried out, numerical simulation is set up.
Description
Technical field
It is specific the invention belongs to security technology area, and in particular to a kind of heavy gas leakage diffusion simulations and suppression Control experiment
System.
Background technology
Gas carbon dioxide, liquefied natural gas (LNG) etc. again, because its specific use is used widely, rapid development.
But this gases did escape, steam spreads along earth's surface, certain harm can be caused, or even trigger blast.Research heavy gas dispersion
Feature and how to suppress Release and dispersion coverage, harm reduction consequence controls Release and dispersion risk, as safing
One of key issue.
Investigation according to the heavy gas leakage diffusion research device to domestic and foreign current finds that research both at home and abroad is in weight gas leakage
Diffusion research is also far from enough.Involved domestic and international main patent has following items.
Chinese patent CN104297424A discloses a kind of heavy gas leakage water curtain Inhibition test method, and experimental provision includes letting out
Place system, water curtain system, data collecting system and control system, wherein bleed-off system include weight gas storage tank, again gas release tank, lazy
Property gas cylinders, shower nozzle of releasing；Water curtain system includes water inlet pipe line, water spray nozzle；The data collecting system includes signal
Processor, thermocouple, methane concentration detector, anemobiagraph, hygrometer, high-speed camera；Weight gas storage tank is by pipeline and gas again
Tank of releasing is connected, and gas tank of releasing is connected by pipeline of releasing with shower nozzle of releasing again, and water inlet pipe line one end is provided with water spray nozzle, water
Curtain is provided with monitoring lattice array in region, and the monitoring point is connected by data wire with data collecting system, and data collecting system is led to
Data wire is crossed to be connected with control system.The set experimental provision is used to carry out weight gas leakage water curtain Inhibition test.
Chinese patent CN104318623A is related to a kind of Chong Qi receiving stations to leak and blast accident simulation shows method, mainly
Solution does not account for Chong Qi receiving stations complex environment factor to spreading the influence of blast, not carrying out strict mould in the prior art
The problem for intending calculating.The invention is leaked and blast accident simulation shows method by using a kind of Chong Qi receiving stations, and user passes through
The leakage of Chong Qi receiving stations and blast accident simulation shows platform are logged in, the diffusion of weight gas leakage and blast under different accident scenes is checked
Coverage, according to the judgement to accident and simulation shows result, plans rational escape route；The Chong Qi receiving stations leakage
And blast accident simulation shows platform includes Chong Qi receiving stations threedimensional model, the leakage of believable Chong Qi receiving stations and blast accident
Scape, the leakage calculated based on CFD and fire result of calculation, the technical scheme of touch-screen and preferably solve above mentioned problem, can use
In the leakage of Chong Qi receiving stations and blast accident simulation shows.
The diffusion of gas yard weight gas leakage suppresses jury rig to a kind of skid-mounted types of Chinese patent CN104989956A again, including can
Portable skid base, is provided with foam mixing liquid bucket and nitrogen cylinder, nitrogen cylinder and foam on packaged type skid base
Mixed liquor bucket is connected by nitrogen delivery pipe road, and foam mixing liquid bucket top is provided with high-expansion foam generator, foams mix
Liquid bucket is connected by foam mixing liquid delivery pipe with high-expansion foam generator, and the rear end of high-expansion foam generator is provided with anti-
Quick-fried air blower, explosion-proof air blower is connected with portable power source, and portable power source is arranged on packaged type skid base.The present invention can be answered
For places such as Chong Qi gas stations, Chong Qi receiving stations, liquefaction plant, weight controlled atmosphere peak station, liquefied petroleum gas, occur in gas yard again
Can immediately be come into operation after large area leakage, produce high expansion foam to suppress the evaporation and diffusion of vaporous cloud in weight gas-liquid pond, drop
Low evaporation rate, it is to avoid cause more serious secondary disaster.
Chinese patent CN102879305A weight gas leakage diffusions and pond fire combustion simulation experiment porch and its experimental technique, bag
Include the experimental system being made up of weight gas storage tank, insulated piping, experimental provision, explosiveproof isolation wall；By electronic balance, ignition system,
Methane concentration detector, thermocouple tree, data acquisition unit, the test system of video camera composition and by PLC control system, all kinds of aobvious
Show the control system of instrument and control valve composition.Reality is spread by the heavy gas meter face to replacing surfacing and adjustment angle
The design of experiment device, can carry out again gas different material surface and trickling speed under spread, gasify spread experimental simulation；Coordinate
Ignition system and methane concentration detector, realize again the monitoring of gas gas cloud change in concentration and gas cloud igniting, and carry out data automatically
And IMAQ.The platform has the advantages of short expense of experimental period is low, and conventional efficient is high.Using the design experimental procedure it is few and
Experiment safety is ensured under strict monitoring and control, easy to operate, assay reproducibility is high.
Above patented technology, equal counterweight gas leakage diffusion is studied and designed.Each patent, is being applied to control above
There is problems with when studying in weight gas leakage diffusion Hazard Technology：
(1) each patent more than can the distribution of counterweight gas leakage diffusion gas cloud, explosive combustion characteristic studied, but can not
Effectively control natural environmental condition, simulates different natural environments.
(2) above patent be mainly used in research it is single in the case of weight gas leakage diffusion, do not form general small-size experiment flat
Platform, can be simulated research to weight gas leakage diffusion property under different suppression emergence technologies and the mechanism of action.
The content of the invention
The present invention is in order to solve being spread without weight gas leakage and control research small test platform and nothing for prior art presence
Ensure ambient parameter stable problem, it is proposed that a kind of heavy gas leakage diffusion simulations and suppression control test system, the present invention can mould
Intend all kinds of heavy gas leakage diffusion experiments, can individually be controlled with multivariable, remote controlled, automatic data collection, experimental period
Short, assay reproducibility is high, expense is low, safe advantage.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of heavy gas leakage diffusion simulations and suppress control test system, including experimental wind tunnel, again gas filling and recycling machine
Structure, suppress control unit and data acquisition unit, the heavy gas filling and recovering mechanism to filling gas again in experimental wind tunnel, and
Cryogenic liquid is reclaimed, natural environment analogue unit is provided with the experimental wind tunnel, to adjust the natural environment in experimental wind tunnel
Parameter, the gas again of injection controls test, high power foam control to survey in experimental wind tunnel by the water curtain for suppressing control unit and carrying out
After examination and/or barrier test, the configured monitoring lattice array in experimental wind tunnel downstream of its control effect is obtained, and is adopted by data
Collection unit is acquired and preservation.
Preferably, the heavy gas filling and recovering mechanism, including weight gas storage tank, cryogenic liquid leakage collecting pit and Low Temperature Liquid
Body recycling can, the heavy gas storage tank is provided with export pipeline connection experimental wind tunnel, and to its leakage again gas, cryogenic liquid leakage is collected
Pond is arranged at the lower end of experimental wind tunnel, and for reclaiming cryogenic liquid, the cryogenic liquid of recovery flows into cryogenic liquid and returns by pipeline
In closed cans.
Preferably, flowmeter, pressure gauge and/or liquid level gauge are provided with the heavy gas storage tank, to measure weight gas storage tank
State, weight gas leakage amount.
Preferably, the cryogenic liquid leakage collecting pit bottom sets having heaters, and the heater lower section is provided with matter
Amount balance, to measure gas evaporation rate again.
Preferably, the suppression control unit, including it is arranged at foam control test module, water curtain control in experimental wind tunnel
Test module processed and dam control module, the foam control test module specifically include foam maker, through high power foam
The foamed cylinder of high power foam that generator is produced introduces experimental wind tunnel, with simulation test foam control process；
The water curtain controls test module, including water supply line and drencher, the drencher to be arranged at experiment wind
The top in hole, to water curtain is sprayed in experimental wind tunnel, with simulation test water curtain control process；
The dam control module, including the barrier of experimental wind tunnel is arranged at, controlled with simulation test barrier
Journey.
Certainly, the test module for suppressing control unit can together come into operation in test, it is also possible to for tool
Body situation is combined use or individually comes into operation, and this simple combination and replacement are that those skilled in the art being capable of basis
What operation principle of the invention was directly obtained, protection scope of the present invention ought to be belonged to.
Secondly, the form of the barrier can be various, such as cofferdam, high-wall, and it can be according to specifically testing
Link or whether need test barrier control effect to be designed to liftable structure, position be variable or demountable structure, can such as rise
The wall construction high of drop, or setting activity fixed mechanism is matched therewith in experimental wind tunnel, to reach the effect of flexible assembling, dismounting
Really, these are improved or variation is what those skilled in the art can be readily apparent that, ought to belong to protection scope of the present invention.
In addition, the foam solution of the foam maker, foam solution flow pressure, absorbing quantity, shower nozzle and mesh form, can be with
Specific situation is controlled to be adjusted according to foam to be simulated, to produce different coefficient of foaming, rupture rate, size, covering
The high power foam of performance, this selection is that those skilled in the art are readily apparent that under operation principle of the invention enlightenment with replacement
's.
Preferably, the natural environment analogue unit, including it is arranged at thermoregulator, humidity regulation in experimental wind tunnel
Device, radiation adjuster and/or velocity regulator, to construct the natural environment under different temperatures, humidity, wind speed or radiation event.
The thermoregulator is heater or refrigeration plant, to realize adjusting the effect of temperature.
The humidistat is the equipment such as humidifier.
The radiation adjuster is the equipment such as radiant panel.
The velocity regulator is the equipment such as frequency conversion fan.
Certainly, the said equipment can be according to the specific size of experimental wind tunnel, shape and situation to be simulated, parameter request
Flexibly replaced, this replaces with what those skilled in the art were readily apparent that.
Further, described experimental wind tunnel test section rectangular cross-section, is easy to the installation of experimental provision；Test section is saturating
It is bright, it is easy to observation and the data record of experimental phenomena；Test section band rotary lifting platform, pool location can be carried out height,
Relative angle is adjusted.
Certainly, those skilled in the art are fully able on the basis of of the invention, by the concrete shape of experimental wind tunnel, chi
The parameters such as very little, length are adjusted, and belong to simple replacement.
Preferably, the top design of the experimental wind tunnel be floating roof, with simulate variety classes again gas on air side near the ground
Evaporation and diffusion in interlayer.
Preferably, the quantity of the monitoring point, arrangement mode are adjustable, and monitoring point is provided with thermocouple, gas concentration inspection
Instrument is surveyed, the detection signal of each monitoring point is pooled to signal processor to carry out the record of data and preserve, and be connected to control eventually
End, shows the change of each monitoring point physical parameter in real time.
Preferably, image capture module, hygrometer, thermometer, anemobiagraph or/and temperature are additionally provided with the monitoring point
Meter, to record collection experiment image data and meteorological data, and the data for being gathered are transferred to control by data acquisition unit
Terminal processed.
Preferably, high power foam is applied to and frost zone is formed on cryogenic liquid, is extracted gas frost zone again by electric saw, leads to
Cross water at atmospheric pressure solution and obtain frost zone air content, then extract gas and gas component is analyzed by chromatograph.
Preferably, it is provided with control valve on each road pipeline.
Preferably, the control terminal controls each sensor and tester of the pilot system, is carried out with to its data
Intelligent adjustment and control.
Compared with prior art, beneficial effects of the present invention are：
1st, it is of the invention applied widely, the analog study under various situations or environment is can be utilized for, specifically include：
(1) gas Release and dispersion under different natural environments again
Vapor concentration and different, this dress of distribution after gas leakage are weighed under different natural environments (temperature, humidity, radiation, wind speed)
Put temperature, humidity, radiation, wind speed controllable, when natural environment is different with means are suppressed, by General experimental wind tunnel system can
The gas cloud image produced depending on section counterweight gas, cryogenic liquid gasification is observed, by measuring system and data acquisition and place
Reason system is analyzed to experimental data, you can weight gas leakage dispersal behavior under different natural environments is studied.
(2) high power foam control weight gas leakage diffusion harm principle
Friendship between the important parameter of regulation influence foaming properties, analysis different performance high power foam and source of leaks, again gas
Interaction, record description phenomenon measures relevant parameter, follows the trail of matter energy whereabouts, carries out study mechanism, sets up numerical simulation,
Realize standard foundation, design optimization.
(3) water curtain control weight gas leakage diffusion harm principle
The important parameter of regulation influence water curtain performance, work is interacted between analysis different performance water curtain and source of leaks, again gas
With record description phenomenon measures relevant parameter, follows the trail of matter energy whereabouts, carries out study mechanism, sets up numerical simulation, realizes
Standard is set up, design optimization.
(4) barrier suppresses weight gas leakage diffusion harm principle
Reciprocation between change barrier shape, size, position, the different barriers of analysis and source of leaks, again gas, note
Record description phenomenon, measures relevant parameter, follows the trail of matter energy whereabouts, carries out study mechanism, sets up numerical simulation, and the standard of realization is built
Vertical, design optimization.
2nd, the present invention by same general wind tunnel experiment system to it is various leak geomery positions, natural environment,
The Release and dispersion of gas carries out controllable, quantization simulated experiment again in the case of shape, control technology, and is realized by oxygen concentration sensor
The measurement of different tested substances, has saved research cost；
3rd, the present invention by general wind tunnel experiment system transparent rectangular test section can counterweight gas gasification generation gas cloud
Phenomenon is observed after distribution situation, each suppression technology apply process and apply, by measuring system and data acquisition and
Processing system is analyzed to experimental data；
4th, in the device by general wind tunnel experiment system will weight gas control system in fixed inspectable space, remaining gas again, let out
Drain-source reclaims control discharge, greatly improves security, is visualized colourless gas cloud by removable monitoring lattice array, obtains gas again and lets out
The temperature of drain-source downstream gas cloud, concentration and distribution；
5th, the present invention realizes and the observation of trickle phenomenon and data is extracted, such as frost zone, acceleration gasification phenomenon；The present apparatus
Described in General experimental wind tunnel system band rotary lifting platform, can to leakage source position carry out flexible height, phase
To angle adjustment.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrated for explaining the application, does not constitute the improper restriction to the application.
Fig. 1 is structural representation of the invention；
Wherein：1- wind-tunnel；2- weight gas storage tanks；3- cryogenic liquid leakage collecting pits；4- cryogenic liquid recycling cans；5- water curtains spray
Head stretches into hole；6- foaming cylinders stretch into hole；7- mass balances；8- humidistats；9- thermoregulators；10- radiation regulations
Device；11- velocity regulators；12- auxiliary heaters；13- water curtain water pipelines；Gas fills pipeline to 14- again；15- cryogenic liquids are reclaimed
Pipeline；16- gas blow-down pipes again；17- chromatographs；Gas fills valve to 18- again；19- gas charging flowmeters again；20- cryogenic liquids
Reclaim valve；Gas is vented valve to 21- again；22- anemobiagraphs；23- hygronoms；24- high-speed cameras；25- common cameras；26-
Leakage monitored down lattice array；27- liquid level gauges；28- pressure of storage tank tables；29- graduated scales；30- monitors lattice array；31- humidity controls
Signal processed；32- temperature control signals signals；33- radiation control signals；34- blast velocity control signals；35- leaks landform control
Signal processed；36- evaporation raties receive signal；37- monitoring points array received signal；38- wind speed receives signal；39- humidity receives letter
Number；40- high speed images receive signal；41- normal images receive signal；42- control terminals.
Specific embodiment：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As shown in Figure 1, a kind of heavy gas leakage diffusion and control research experiment platform, including General experimental wind tunnel system,
Gas is filled and recovery system, control technology testing experimental system, auxiliary heating system, data Collection ＆ Processing System again.This hair
Bright sunykatuib analysis LNG is in different leakage size shaped positions, temperature, humidity, wind speed, radiation and active and passive control technology
Evaporation rate and Release and dispersion steam temperature, concentration and distribution are influenceed under (barrier (cofferdam, high-wall), water curtain, high power foam)
Key factor, influence degree, the observation extraction and analysis (such as lather collapse process) of minor detail, follow the trail of matter energy go
To, study mechanism is carried out, set up numerical simulation.
Certainly the composition of gas can be other again, such as carbon dioxide.
The heavy gas filling includes that weight gas storage tank 2, cryogenic liquid leakage collecting pit 3, cryogenic liquid are reclaimed with recovery system
Tank 4, filler pipe 14, recovery tube 15；The control technology testing experimental system includes high power foam control part of detecting, water curtain control
Part of detecting processed, barrier control section, only reserve the hole of each control part of detecting in the present apparatus, will control during experiment
Technology other assemblies processed are tested by being connected with reserving hole.It is hair that the high power foam controls part of detecting reserving hole
Bubble cylinder stretches into hole 6.The water curtain controls test experiments part reserving hole to stretch into hole 5 for drencher.The data are adopted
Acquisition means include graduated scale 29, monitoring lattice array 30, high-speed camera 24, common camera 25, mass balance 7, chromatograph 17,
Wherein monitoring lattice array includes thermocouple, oxygen concentration detecting instrument；Described control system includes temperature, humidity, amount of radiation, wind
The display instruments such as speed, pressure, flow and all kinds of control valves, display instrument.
Weight gas storage tank discharges into test section by leakage line, then will weight gas storage tank (cryogenic liquid for cryogenic liquid
Storage tank) it is connected with cryogenic liquid leakage collecting pit, cryogenic liquid leakage collecting pit is by recovery line and cryogenic liquid recycling can
Be connected, high power foam generating means is connected with the cylinder that foams, and water inlet pipe line one end is provided with water spray nozzle, test zone downstream according to
Needs are provided with adjustable monitoring lattice array, and the monitoring point is connected by data wire with data collecting system, data collecting system
It is connected with control system by data wire.
Gas storage again is equipped with pressure gauge 28, liquid level gauge 27, flowmeter 19 in the weight gas storage tank 2 of insulated cryogen on storage tank,
For monitoring state, the weight gas leakage amount of weight gas storage tank；Cryogenic liquid leakage collecting pit 3 is used for storing what single experiment was used
Gas again, before the experiment, a certain amount of cryogenic liquid needed for by experiment is introduced into leakage collecting tank from cryogenic liquid storage tank,
If gas again, directly it is introduced into experimental provision from weight gas storage tank；During leakage experiment is carried out, by controlling going out for storage tank
Mouth valve control weight gas leakage amount；The cryogenic liquid that leaks out, again gas are connected to cryogenic liquid leakage collecting pit 3 or straight by pipeline 14
Tap into experimental provision, can be according to experiment demand selection different shape, the bleeder pipe in aperture.
Cryogenic liquid leakage collecting pit 3, control technology test system are loaded in wind-tunnel as needed, can be as needed
By the humidistat 8, thermoregulator 9, radiation tune machine 10, the regulation weight gas leakage of velocity regulator 11 that are carried in wind-tunnel
Temperature, humidity in environment, amount of radiation, wind speed.
Water required for manufacture water curtain is introduced by water inlet pipe line 13, and pressure gauge, flowmeter, outlet valve are housed on water pipe
For controlling water；Introduce water pipe to be connected with drencher, drencher is detachable equipment, can be according to experiment demand choosing
The shower nozzle in different shape, aperture is selected, different shape, size, water-carrying capacity water curtain can be manufactured.Only need to be by water inlet pipe line during experiment
Connection drencher in drencher reserving hole by being introduced into wind-tunnel.
Foam solution needed for manufacture high power foam introduces high power foam generator by pipeline, is produced through high power foam generator
The foamed cylinder of high power foam introduce foam receiving tank, can according to experiment need selection different foam liquid, foam solution flow pressure,
Absorbing quantity, shower nozzle, filter screen, can manufacture the high power foam of different coefficient of foaming, rupture rate, size, covering performance.During experiment only
The connection of foam-making apparatus various pieces need to be debugged, then connection foaming cylinder in the cylinder reserving hole that foams by introducing wind-tunnel
In.
In some monitoring points 30 of leakage hole arranged downstream, corresponding placement thermocouple, oxygen concentration analyzer on each point
And be connected with data acquisition unit；Arrange that anemobiagraph 24, hygrometer 25, high-speed camera 26, the record of common camera 27 are adopted simultaneously
Collection experiment image data and meteorological data；Corresponding sensor can be again installed as needed for control technology part of detecting, such as
Thermocouple, oxygen sensor are installed in high power foam foaming cylinder top, drencher lower section；Applied for phenomenon such as high power foam
It is added to and frost zone is formed on cryogenic liquid, extracted gas frost zone again by electric saw, frost zone is obtained by water at atmospheric pressure solution and is contained
Tolerance, then extracts gas and analyzes gas component by chromatograph 17.
Described control system display instrument and all kinds of controls such as including temperature, humidity, amount of radiation, wind speed, pressure, flow
Valve processed, all kinds of display instruments are arranged in corresponding storage tank, equipment and attached pipeline, and control valve is arranged on corresponding storage tank
On turnover pipeline；Described data collecting system is connected with control system, and the data-signal that will be collected is aggregated into control
System terminal is processed.
The monitoring lattice array is made up of a series of monitoring point for being distributed in gas bleed outlet downstream again, on each monitoring point
Thermocouple, oxygen concentration detecting instrument are arranged simultaneously, monitoring location can be adjusted as needed, the detection of each monitoring point
Signal is pooled to signal processor and carries out the record of data and preserve, and is connected to control terminal, and each monitoring point thing is shown in real time
Manage the change of parameter.
Described experiment porch can simulate weight gas leakage to scene in different terrain, public according to the big utilizing object conducting heat of semo-infinite
Formula, obtains different temperatures topographical surface and leaks temperature variation curve after gas again, and correlation is directly inputted by platform inputting interface
Parameter, you can gas is let out again in the case of startup control system regulation auxiliary heating system heating power simulation different terrain different temperatures
Leakage diffusion scene.
The present invention as needed, carries out weight gas leakage diffusion model under different zoom ratio, is given by data handling system
Corresponding weight gas leakage amount, wind speed.Change according to mass balance quality obtains gas evaporation rate again, according to graduated scale, commonly takes the photograph
The seizure of camera and later data are processed, and are obtained required data and then are carried out energy whereabouts tracking.By removable monitoring dot matrix
The visualization of colourless gas cloud is obtained temperature, concentration and the distribution of weight gas leakage source downstream gas cloud by row.Caught by high-speed camera
The whereabouts of material during lather collapse process, water curtain forming process, foam frost layer formation process etc., then comprehensive other measurements
Data analysis.
The experiment porch can carry out the small test of various control technology, can provide each correlative and consider size factor
Value is calculated in interior conversion, control technology parameter arbitrarily can be adjusted individually, control technology performance such as frostproof froth n multiple, stabilization
Property, foam size with distribution, water curtain granular size with distribution can provide quantized values, energy whereabouts can be given.
Measurement of the experiment porch to vapor concentration is used uniformly across oxygen concentration sensor, improves versatility, changes
Gas can also realize measurement.
Preferably, described General experimental wind tunnel system test section rectangular cross-section, is easy to the installation of experimental provision；Test
Section is transparent, is easy to observation and the data record of experimental phenomena；Test section band rotary lifting platform, can carry out height to pool location
Degree, relative angle adjustment.
Described General experimental wind tunnel system can simulate not equality of temperature by heater, humidifier, frequency conversion fan, radiant panel
Natural environment under degree, humidity, wind speed, radiation event.
Experiment reclaims remaining cryogenic liquid in cryogenic liquid leakage collecting pit and its attached pipeline after terminating, emptying.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent, improvement etc., should be included within the protection domain of the application.
Although above-mentioned be described with reference to accompanying drawing to specific embodiment of the invention, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need the various modifications made by paying creative work or deformation still within protection scope of the present invention.
Claims (10)
1. a kind of heavy gas leakage diffusion simulations and suppress control test system, it is characterized in that：Including experimental wind tunnel, again gas filling with
Recovering mechanism, suppression control unit and data acquisition unit, the heavy gas filling are filled with recovering mechanism in experimental wind tunnel
Gas again, and reclaim cryogenic liquid, is provided with natural environment analogue unit in the experimental wind tunnel, with adjust in experimental wind tunnel from
Right ambient parameter, the gas again of injection controls test, high power foam in experimental wind tunnel by the water curtain for suppressing control unit and carrying out
After control test and/or barrier test, the configured monitoring lattice array in experimental wind tunnel downstream of its control effect is obtained, and is passed through
Data acquisition unit is acquired and preservation.
2. a kind of heavy gas leakage diffusion simulations as claimed in claim 1 and control test system is suppressed, it is characterized in that：It is described heavy
Gas is filled and recovering mechanism, including weight gas storage tank, cryogenic liquid leakage collecting pit and cryogenic liquid recycling can, the heavy gas storage tank
Export pipeline connection experimental wind tunnel is provided with, to its leakage again gas, cryogenic liquid leakage collecting pit is arranged under experimental wind tunnel
End, for reclaiming cryogenic liquid, the cryogenic liquid of recovery is flowed into cryogenic liquid recycling can by pipeline.
3. a kind of heavy gas leakage diffusion simulations as claimed in claim 2 and control test system is suppressed, it is characterized in that：It is described heavy
Flowmeter, pressure gauge and/or liquid level gauge are provided with gas storage tank, to measure state, the weight gas leakage amount of weight gas storage tank.
4. a kind of heavy gas leakage diffusion simulations as claimed in claim 2 and control test system is suppressed, it is characterized in that：It is described low
Geothermal liquid leakage collecting pit bottom sets having heaters, and the heater lower section is provided with mass balance, is evaporated with measuring again gas
Rate.
5. a kind of heavy gas leakage diffusion simulations as claimed in claim 1 and control test system is suppressed, it is characterized in that：The suppression
Control unit processed, including it is arranged at foam control test module, water curtain control test module and barrier control in experimental wind tunnel
Molding block, the foam control test module specifically includes foam maker, through the high power foam that high power foam generator is produced
Foamed cylinder introduces experimental wind tunnel, with simulation test foam control process；
The water curtain controls test module, including water supply line and drencher, the drencher to be arranged at experimental wind tunnel
Top, to water curtain is sprayed in experimental wind tunnel, with simulation test water curtain control process；
The dam control module, including the barrier of experimental wind tunnel is arranged at, with simulation test barrier control process.
6. a kind of heavy gas leakage diffusion simulations as claimed in claim 1 and control test system is suppressed, it is characterized in that：It is described from
Right environmental simulation unit, including it is arranged at thermoregulator in experimental wind tunnel, humidistat, radiation adjuster and/or wind
Fast adjuster, to construct the natural environment under different temperatures, humidity, wind speed or radiation event.
7. a kind of heavy gas leakage diffusion simulations as claimed in claim 1 and control test system is suppressed, it is characterized in that：Described
Experimental wind tunnel test section rectangular cross-section, test section is transparent, or test section band rotary lifting platform, and cryogenic liquid leakage is collected
Pond position carries out height, relative angle adjustment；
Or the top design of the experimental wind tunnel is floating roof, to simulate variety classes steaming of the gas in air near surface boundary layer again
Hair diffusion.
8. a kind of heavy gas leakage diffusion simulations as claimed in claim 1 and control test system is suppressed, it is characterized in that：The prison
The quantity of measuring point, arrangement mode are adjustable, and monitoring point is provided with thermocouple, gas concentration detector, the detection of each monitoring point
Signal is pooled to signal processor and carries out the record of data and preserve, and is connected to control terminal, and each monitoring point thing is shown in real time
Manage the change of parameter；
Or image capture module, hygrometer, thermometer, anemobiagraph or/and thermometer are additionally provided with the monitoring point, to record
Collection experiment image data and meteorological data, and the data for being gathered are transferred to control terminal by data acquisition unit.
9. a kind of heavy gas leakage diffusion simulations as claimed in claim 5 and control test system is suppressed, it is characterized in that：High power is steeped
Foam is applied to and frost zone is formed on cryogenic liquid, is extracted gas frost zone again by electric saw, is freezed by water at atmospheric pressure solution
Layer air content, then extracts gas and analyzes gas component by chromatograph.
10. a kind of heavy gas leakage diffusion simulations as claimed in claim 8 and control test system is suppressed, it is characterized in that：Each road
Control valve is provided with pipeline；
Or the control terminal controls each sensor and tester of the pilot system, with its data carried out Intelligent adjustment and
Control.
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