CN106840588B - A kind of heavy gas leakage diffusion simulations and inhibit control test system - Google Patents
A kind of heavy gas leakage diffusion simulations and inhibit control test system Download PDFInfo
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- CN106840588B CN106840588B CN201710142195.7A CN201710142195A CN106840588B CN 106840588 B CN106840588 B CN 106840588B CN 201710142195 A CN201710142195 A CN 201710142195A CN 106840588 B CN106840588 B CN 106840588B
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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 inhibit control test system, including experimental wind tunnel, gas filling and recovering mechanism again, inhibit control unit and data acquisition unit, gas filling and recovering mechanism fill gas again into experimental wind tunnel again, and recycle cryogenic liquid, natural environment analogue unit is provided in experimental wind tunnel, to adjust the natural environment parameter in experimental wind tunnel, the gas again of injection controls test by the water curtain for inhibiting control unit to carry out in experimental wind tunnel, after high power foam control test and/or barrier test, its control effect is set the monitoring lattice array acquisition in experimental wind tunnel downstream.The present invention can influence evaporation rate and Release and dispersion steam temperature, concentration and the key factor of distribution, influence degree 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, track matter energy whereabouts, mechanism study is carried out, numerical simulation is established.
Description
Technical field
It is specific that the invention belongs to security technology areas, and in particular to a kind of heavy gas leakage diffusion simulations and inhibits Control experiment
System.
Background technique
Gas carbon dioxide, liquefied natural gas (LNG) etc. again, because its specific use is used widely, rapid development.
But this gases did escape, steam are spread along earth's surface, will cause certain harm, or even cause explosion.Study heavy gas dispersion
Feature and how to inhibit Release and dispersion coverage, harm reduction consequence controls Release and dispersion risk, becomes and ensures safety
One of critical issue.
It is found according to the investigation of the heavy gas leakage diffusion research device to domestic and foreign current, research both at home and abroad is in weight gas leakage
Diffusion research is also far from enough.Related main patent both at home and abroad 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 collection system and control system, wherein bleed-off system includes weight gas storage tank, gas is released tank, lazy again
Property gas cylinders, spray head of releasing；Water curtain system includes water inlet pipe line, water spray nozzle；The data collection system includes signal
Processor, thermocouple, methane concentration detector, anemobiagraph, hygrometer, high-speed camera；Weight gas storage tank passes through pipeline and gas again
Tank of releasing is connected, and gas tank of releasing is connected by releasing pipeline with spray head of releasing again, and water inlet pipe line one end is equipped with water spray nozzle, water
Monitoring lattice array is equipped in curtain region, the monitoring point is connected by data line with data collection system, and data collection system is logical
Data line is crossed to be connected with control system.The set experimental provision is for carrying out weight gas leakage water curtain Inhibition test.
Chinese patent CN104318623A is related to a kind of leakage of Chong Qi receiving station and blast accident simulation shows method, mainly
Solve the influence not accounted in the prior art Chong Qi receiving station complex environment factor to diffusion explosion, without carrying out stringent mould
Quasi- the problem of calculating.The invention is leaked by using a kind of Chong Qi receiving station and blast accident simulation shows method, user pass through
The leakage of Chong Qi receiving station and blast accident simulation shows platform are logged in, checks the diffusion of weight gas leakage and explosion under different accident scenes
Coverage, according to the judgement and simulation shows to accident as a result, planning reasonable escape route；The Chong Qi receiving station leakage
And blast accident simulation shows platform includes Chong Qi receiving station threedimensional model, the leakage of believable Chong Qi receiving station and blast accident field
Scape, based on CFD calculate leakage and fire calculated result, the technical solution of touch screen preferably solves the above problem, can use
In the leakage of Yu Chongqi receiving station and blast accident simulation shows.
The diffusion of gas yard weight gas leakage inhibits jury rig to a kind of skid-mounted type of Chinese patent CN104989956A again, including can
Mobile skid pedestal is provided with foam mixing liquid bucket and nitrogen cylinder, nitrogen cylinder and foam on packaged type skid pedestal
Mixed liquor bucket is connected by nitrogen delivery pipe road, is provided with high-expansion foam generator, foams mix above foam mixing liquid bucket
Liquid bucket is connected to by foam mixing liquid delivery pipe with high-expansion foam generator, and the rear end of high-expansion foam generator is equipped with anti-
Quick-fried air blower, explosion-proof air blower are connected with mobile power source, and mobile power source is arranged on packaged type skid pedestal.The present invention can answer
For places such as Chong Qi gas station, Chong Qi receiving station, liquefaction plant, weight controlled atmosphere peak station, liquefied petroleum gas, occur in gas yard again
It can come into operation immediately after large area leakage, generate high expansion foam to inhibit the evaporation and diffusion of vaporous cloud in weight gas-liquid pond, drop
Low evaporation rate avoids more serious secondary disaster.
Chinese patent CN102879305A weight gas leakage diffusion and pond fire combustion simulation experiment porch and its experimental method, packet
Include the experimental system being made of weight gas storage tank, insulated piping, experimental provision, explosiveproof isolation wall；By electronic balance, ignition system,
Methane concentration detector, thermocouple tree, data collector, the test macro of video camera composition and by PLC control system, all kinds of aobvious
Show the control system of instrument and control valve composition.It is spread by the heavy gas meter face to replacing surfacing and adjustment angle real
The design of experiment device can carry out again the experiment simulation of gas sprawling, gasification diffusion under different material surface and trickling speed；Cooperation
Ignition system and methane concentration detector realize gas gas cloud concentration variation monitoring again and gas cloud igniting, and carry out data automatically
And Image Acquisition.The platform has many advantages, such as that the short expense of experimental period is low, and experimental efficiency is high.It is few using the design experimental procedure and
Experiment safety is ensured under stringent be monitored and controlled, and easy to operate, assay reproducibility is high.
The above patented technology, equal counterweight gas leakage diffusion are studied and have been designed.Above each patent is being applied to control
It is had the following problems when weight gas leakage diffusion Hazard Technology research:
(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) the above patent is mainly used for studying weight gas leakage diffusion in single situation, and it is flat not form general small-size experiment
Platform can carry out analog study to weight gas leakage diffusion property under different inhibition emergence technologies and the mechanism of action.
Summary of the invention
The present invention is of the existing technology without the diffusion of weight gas leakage and control research small test platform and nothing in order to solve
Guarantee environmental parameter stable problem, propose a kind of heavy gas leakage diffusion simulations and inhibit control test system, the present invention can mould
Intend all kinds of heavy gas leakage diffusion experiments, there is multivariable can be controlled separately, is remote controlled, automatic data collection, experimental period
Advantage short, assay reproducibility is high, expense is low, highly-safe.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of heavy gas leakage diffusion simulations and inhibit control test system, including experimental wind tunnel, again gas filling and recycling machine
Structure inhibits control unit and data acquisition unit, and the heavy gas filling and recovering mechanism fill gas again into experimental wind tunnel, and
Cryogenic liquid is recycled, natural environment analogue unit is provided in the experimental wind tunnel, to adjust the natural environment in experimental wind tunnel
Parameter, the gas again of injection are surveyed in experimental wind tunnel by the water curtain control test, the high power foam control that inhibit control unit to carry out
After examination and/or barrier test, control effect is set the monitoring lattice array acquisition in experimental wind tunnel downstream, is adopted by data
Collection unit is acquired and saves.
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 are provided with export pipeline connection experimental wind tunnel, and to its leakage again gas, cryogenic liquid leakage is collected
Pond is set to the lower end of experimental wind tunnel, and for recycling cryogenic liquid, the cryogenic liquid of recycling flows into cryogenic liquid by pipeline and returns
In closed cans.
Preferably, it is provided with flowmeter, pressure gauge and/or liquidometer on the heavy gas storage tank, to measure weight gas storage tank
State, weight gas leakage amount.
Preferably, the cryogenic liquid leakage collects bottom of pond portion and is provided with heater, is provided with matter below the heater
Balance is measured, to measure gas evaporation rate again.
Preferably, the inhibition control unit, the foam including being set in experimental wind tunnel control test module, water curtain control
Test module processed and dam control module, the foam control test module specifically includes foam maker, through high power foam
The foamed cylinder of the high power foam that generator generates introduces experimental wind tunnel, with simulation test foam control process；
The water curtain controls test module, including water supply line and drencher, the drencher are set to experiment wind
The top in hole, water curtain is sprayed into experimental wind tunnel, with simulation test water curtain control process；
The dam control module, the barrier including being set to experimental wind tunnel, was controlled with simulation test barrier
Journey.
Certainly, the test module for inhibiting control unit can come into operation together in test, can also be 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 the working principle of the invention directly obtained, it ought to belong to the scope of protection of the present invention.
Secondly, the form of the barrier can be to be a variety of, such as cofferdam, high-wall, and it can be according to specific test
Whether link needs to test barrier control effect and is designed to that liftable structure, position be variable or detachable structure, can such as rise
Setting activity fixed mechanism is matched therewith in the high wall construction or experimental wind tunnel of drop, to reach the effect of flexible assembling, disassembly
Fruit, it is that those skilled in the art can be readily apparent that these, which improve or change, ought to be belonged to the scope of protection of the present invention.
It, can be in addition, the foam solution of the foam maker, foam solution flow pressure, absorbing quantity, spray head and mesh form
It controls specific situation according to foam to be simulated to be adjusted, to produce different coefficient of foaming, rupture rate, size, covering
The high power foam of performance, this selection are that those skilled in the art are readily apparent that under the working principle of the invention enlightenment with replacement
's.
Preferably, the natural environment analogue unit, including be set in experimental wind tunnel thermoregulator, humidity regulation
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 equipment, to realize the effect for adjusting 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, above equipment can according to the specific size of experimental wind tunnel, shape and it is to be simulated the case where, parameter request
It is flexibly replaced, this replaces with what those skilled in the art were readily apparent that.
Further, the experimental wind tunnel test section section is rectangle, convenient for the installation of experimental provision；Test section is saturating
It is bright, convenient for the observation and data record of experimental phenomena；Test section band rotary lifting platform, can to pool location carry out height,
Relative angle adjustment.
Certainly, those skilled in the art are fully able on the basis of the present invention, by the concrete shape of experimental wind tunnel, ruler
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 atmosphere 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 and carries out recording and saving for data, and is connected to control eventually
End, the variation of each monitoring point physical parameter of real-time display.
Preferably, it is additionally provided with image capture module, hygrometer, anemobiagraph or/and thermometer at the monitoring point, with note
Record acquisition experiment image data and meteorological data, and the data acquired are transferred to controlling terminal by data acquisition unit.
Preferably, high power foam, which is applied on cryogenic liquid, forms frost zone, extracts gas frost zone again by electric saw, leads to
It crosses water at atmospheric pressure solution and obtains frost zone air content, then extract gas by chromatograph and analyze gas component.
Preferably, control valve is provided on each road pipeline.
Preferably, the controlling terminal controls each sensor and tester of the pilot system, to carry out to its data
Intelligent regulation and control.
Compared with prior art, the invention has the benefit that
1, of the invention applied widely, it can be utilized for the analog study under a variety of situations or environment, specifically include:
(1) gas Release and dispersion under different natural environments again
Vapor concentration and different, this dress of distribution after weight gas leakage under different natural environments (temperature, humidity, radiation, wind speed)
It is controllable to set temperature, humidity, radiation, wind speed, when natural environment is different with means are inhibited, by General experimental wind tunnel system can
The gas cloud image generated depending on section counterweight gas, cryogenic liquid gasification is observed, and is acquired and is located by measuring system and data
Reason system analyzes experimental data, can study weight gas leakage dispersal behavior under different natural environments.
(2) high power foam, which controls weight gas leakage and spreads, endangers principle
The important parameter of adjusting influence foaming properties, analysis different performance high power foam and source of leaks, the again friendship between gas
Interaction, record description phenomenon measure relevant parameter, track matter energy whereabouts, carry out mechanism study, establish numerical simulation,
The foundation of realization standard, design optimization.
(3) water curtain, which controls weight gas leakage and spreads, endangers principle
The important parameter for influencing water curtain performance is adjusted, different performance water curtain is analyzed with source of leaks, again between gas and interacts work
With record description phenomenon measures relevant parameter, tracks matter energy whereabouts, carries out mechanism study, establishes numerical simulation, realizes
Standard foundation, design optimization.
(4) barrier inhibits weight gas leakage diffusion to endanger principle
Change barrier shape, size, position, analyzes the reciprocation between different barriers and source of leaks, again gas, note
Record description phenomenon, measures relevant parameter, tracks matter energy whereabouts, carry out mechanism study, establish numerical simulation, realization standard is built
Vertical, design optimization.
2, the present invention by the same general wind tunnel experiment system to various leakage 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；
3, the present invention by general wind tunnel experiment system transparent rectangular test section can counterweight gas gasification generation gas cloud
Distribution situation, each suppression technology apply process and apply after phenomenon observed, by measuring system and data acquisition and
Processing system analyzes experimental data；
4, weight gas control system is being fixed in inspectable space by general wind tunnel experiment system in the device, remaining gas again is let out
Drain-source recycling control discharge, greatly improves safety, visualizes colourless gas cloud by removable monitoring lattice array, obtains gas again and let out
Temperature, concentration and the distribution of drain-source downstream gas cloud；
5, the present invention is realized to the observation of subtle phenomenon and data extraction, and such as frost zone accelerates gasification phenomenon；The present apparatus
Described in General experimental wind tunnel system band rotary lifting platform, flexible and convenient height, phase can be carried out to leakage source position
Angle is adjusted.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is structural schematic diagram of the invention；
Wherein: 1- wind-tunnel；2- weight gas storage tank；3- cryogenic liquid leakage collecting pit；4- cryogenic liquid recycling can；The spray of 5- water curtain
Head protrudes into hole；6- foaming cylinder protrudes into hole；7- mass balance；8- humidistat；9- thermoregulator；10- radiation is adjusted
Device；11- velocity regulator；12- auxiliary heater；13- water curtain water pipeline；Gas fills pipeline to 14- again；The recycling of 15- cryogenic liquid
Pipeline；16- gas blow-down pipe again；17- chromatograph；Gas fills valve to 18- again；19- gas charging flowmeter again；20- cryogenic liquid
Recycle valve；Gas is vented valve to 21- again；22- anemobiagraph；23- hygronom；24- high-speed camera；25- common camera；26-
Leak monitored down lattice array；27- liquidometer；28- pressure of storage tank table；29- graduated scale；30- monitors lattice array；31- humidity control
Signal processed；32- temperature control signals signal；33- radiation control signal；34- blast velocity control signal；35- leaks landform control
Signal processed；36- evaporation rate receives signal；The monitoring point 37- array received signal；38- wind speed receives signal；39- humidity receives letter
Number；40- high speed image receives signal；41- normal image receives signal；42- controlling terminal.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has 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 singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As shown in Fig. 1, a kind of heavy gas leakage diffusion and control research experiment platform, including General experimental wind tunnel system,
Gas filling 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 influenced 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, tracking matter energy go
To progress mechanism study establishes numerical simulation.
Certainly the ingredient of gas can be other again, such as carbon dioxide.
The heavy gas filling includes weight gas storage tank 2, cryogenic liquid leakage collecting pit 3, cryogenic liquid recycling with recovery system
Tank 4, again gas filling pipeline 14 and cryogenic liquid recovery line 15；The control technology testing experimental system includes high power foam control
Part of detecting processed, water curtain control part of detecting, barrier control section, and each control part of detecting is only reserved in the present apparatus
Hole, control technology other assemblies connect with reserving hole and can test by when experiment.The high power foam control is surveyed
Examination part reserving hole is that foaming cylinder protrudes into hole 6.The water curtain control test experiments part reserving hole is stretched for drencher
Enter hole 5.The data acquisition device 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；The control system includes
The display instruments such as temperature, humidity, amount of radiation, wind 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 passes through recovery line and cryogenic liquid recycling can
Be connected, high power foam generating device is connected with foaming cylinder, water inlet pipe line one end equipped with water spray nozzle, test zone downstream according to
Need to be equipped with adjustable monitoring lattice array, the monitoring point is connected by data line with data collection system, data collection system
It is connected by data line with control system.
Gas is stored in the weight gas storage tank 2 of insulated cryogen again, and pressure of storage tank table 28, liquidometer 27, again gas are housed on storage tank
Charging flowmeter 19, for monitoring state, the weight gas leakage amount of weight gas storage tank；Cryogenic liquid leakage collecting pit 3 is used to store list
Gas before the experiment draws a certain amount of cryogenic liquid needed for experiment from cryogenic liquid storage tank again used in secondary experiment
Enter to leak in collecting tank, if it is gas again, be directly introduced into experimental provision from weight gas storage tank；During carrying out leakage experiment,
Outlet valve by controlling storage tank controls weight gas leakage amount；The cryogenic liquid that leaks out, again gas are connected to Low Temperature Liquid by pipeline 14
Body leakage collecting pit 3 is directly entered 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 macro are packed into wind-tunnel as needed, can according to need
Machine 10, velocity regulator 11 is adjusted to adjust weight gas leakage by the humidistat 8, thermoregulator 9, radiation that carry in wind-tunnel
Temperature, humidity in environment, amount of radiation, wind speed.
It manufactures water required for water curtain to introduce by water curtain water pipeline 13, pressure gauge, flowmeter, outlet valve is housed on water pipe
For controlling water；It introduces water pipe to be connected with drencher, drencher is detachable and interchangeable equipment, can be according to experiment demand choosing
The spray head of different shape, aperture is selected, different shape, size, water flow water curtain can be manufactured.It only need to be by water inlet pipe line when experiment
Connection drencher in drencher reserving hole by being introduced into wind-tunnel.
Foam solution needed for manufacturing high power foam introduces high power foam generator by pipeline, generates through high power foam generator
The foamed cylinder of high power foam introduce foam receiving tank, can be needed to select according to experiment different foam liquid, foam solution flow pressure,
Absorbing quantity, spray head, strainer, can manufacture different coefficient of foaming, rupture rate, size, covering performance high power foam.When experiment only
Foam-making apparatus various pieces need to be connected and be debugged, then connection foaming cylinder is by introducing wind-tunnel in foaming cylinder reserving hole
In.
In several monitoring lattice arrays 30 of leakage hole arranged downstream, thermocouple, oxygen concentration minute are accordingly placed on each point
Analyzer is simultaneously connected with data collector；Anemobiagraph 22, hygrometer 23, high-speed camera 24, common camera 25 is simutaneously arranged to remember
Record acquisition experiment image data and meteorological data；Corresponding sensing can be installed again as needed for control technology part of detecting
Device, as installed thermocouple, oxygen sensor below high power foam foaming cylinder top, drencher；For phenomenon such as high power
Foam, which is applied on cryogenic liquid, forms frost zone, extracts gas frost zone again by electric saw, obtains ice by water at atmospheric pressure solution
Freeze layer air content, then extracts gas by chromatograph 17 and analyze gas component.
The control system includes the display instruments such as temperature, humidity, amount of radiation, wind speed, pressure, flow and all kinds of controls
Valve processed, all kinds of display instruments are mounted in corresponding storage tank, equipment and attached pipeline, and control valve is mounted on corresponding storage tank
It passes in and out on pipeline；The data collection system is connected with control system, and collected data-signal is aggregated into control
System terminal is handled.
The monitoring lattice array is made of a series of monitoring point for being distributed in gas bleed outlet downstream again, on each monitoring point
It is simutaneously arranged thermocouple, oxygen concentration detecting instrument, monitoring location can be adjusted as needed, the detection of each monitoring point
Signal is pooled to signal processor and carries out recording and saving for data, and is connected to controlling terminal, each monitoring point object of real-time display
Manage the variation of parameter.
Scene on the experiment porch analog weight gas leakage to different terrain, it is 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, directly inputs correlation by platform input interface
Parameter, can start control system adjust auxiliary heating system heating power simulation different terrain different temperatures in the case of again gas let out
Leakage diffusion scene.
The present invention is as needed, carries out weight gas leakage diffusion model under different zoom ratio, is provided by data processing system
Corresponding weight gas leakage amount, wind speed.Gas evaporation rate again is obtained according to the variation of mass balance quality, according to graduated scale, is commonly taken the photograph
The capture of camera and later data processing, obtain required data and then carry out the tracking of energy whereabouts.By removable monitoring dot matrix
Column visualize colourless gas cloud, obtain temperature, concentration and the distribution of weight gas leakage source downstream gas cloud.It is captured by high-speed camera
The whereabouts of substance during lather collapse process, water curtain forming process, foam frost layer formation process etc., then integrate 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
Conversion calculates value inside, and control technology parameter arbitrarily can be adjusted individually, control technology performance such as frostproof froth n multiple, stabilization
Property, foam size and distribution, water curtain granular size and distribution can provide quantized values, energy whereabouts can be provided.
The experiment porch is used uniformly oxygen concentration sensor to the measurement of vapor concentration, improves versatility, replacement
Gas can also realize measurement.
Preferably, the General experimental wind tunnel system test section section is rectangle, convenient for the installation of experimental provision；Test
Section is transparent, convenient for the observation and data record of experimental phenomena；Test section band rotary lifting platform can carry out pool location high
Degree, relative angle adjustment.
The General experimental wind tunnel system passes through heater, humidifier, frequency conversion fan, radiant panel analog not equality of temperature
Natural environment under degree, humidity, wind speed, radiation event.
By cryogenic liquid remaining in cryogenic liquid leakage collecting pit and its attached pipeline recycling, emptying after experiment.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (7)
1. a kind of heavy gas leakage diffusion simulations and inhibit control test system, it is characterized in that: include experimental wind tunnel, again gas filling with
Recovering mechanism inhibits control unit and data acquisition unit, and the heavy gas filling and recovering mechanism are filled into experimental wind tunnel
Gas again, and cryogenic liquid is recycled, natural environment analogue unit is provided in the experimental wind tunnel, to adjust oneself in experimental wind tunnel
Right environmental parameter, the gas again of injection control test, high power foam by the water curtain for inhibiting control unit to carry out in experimental wind tunnel
After control test and/or barrier test, control effect is set the monitoring lattice array acquisition in experimental wind tunnel downstream, passes through
Data acquisition unit is acquired and saves；
The experimental wind tunnel test section section is rectangle, and test section is transparent, test section band rotary lifting platform, to cryogenic liquid
It leaks collecting pit position and carries out height, relative angle adjustment；
The top design of the experimental wind tunnel is floating roof, to simulate variety classes evaporation of the gas in atmosphere near surface boundary layer again
Diffusion；
The inhibition control unit, including foam control test module, the water curtain control test module being set in experimental wind tunnel
And dam control module, the foam control test module specifically include foam maker, generate through high power foam generator
The foamed cylinder of high power foam introduce experimental wind tunnel, with simulation test foam control process；
The water curtain controls test module, including water supply line and drencher, the drencher are set to experimental wind tunnel
Water curtain is sprayed at top into experimental wind tunnel, with simulation test water curtain control process；
The dam control module, the barrier including being set to experimental wind tunnel, with simulation test barrier control process；It is high
Times foam, which is applied on cryogenic liquid, forms frost zone, extracts gas frost zone again by electric saw, is obtained by water at atmospheric pressure solution
Frost zone air content then extracts gas by chromatograph and analyzes gas component.
2. a kind of heavy gas leakage diffusion simulations as described in claim 1 and inhibition control test system, it is characterized in that: described heavy
Gas filling and recovering mechanism, including weight gas storage tank, cryogenic liquid leakage collecting pit and cryogenic liquid recycling can, the heavy gas storage tank
It is provided with export pipeline connection experimental wind tunnel, gas, cryogenic liquid leakage collecting pit are set under experimental wind tunnel again to its leakage
End, for recycling cryogenic liquid, the cryogenic liquid of recycling flows into cryogenic liquid recycling can by pipeline.
3. a kind of heavy gas leakage diffusion simulations as claimed in claim 2 and inhibition control test system, it is characterized in that: described heavy
Flowmeter, pressure gauge and/or liquidometer are provided on 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 inhibition control test system, it is characterized in that: described low
Geothermal liquid leakage collects bottom of pond portion and is provided with heater, is provided with mass balance below the heater, is evaporated with measuring again gas
Rate.
5. a kind of heavy gas leakage diffusion simulations as described in claim 1 and inhibit control test system, it is characterized in that: it is described from
Right environmental simulation unit, including thermoregulator, humidistat, radiation adjuster and/or the wind being set in experimental wind tunnel
Fast adjuster, to construct the natural environment under different temperatures, humidity, wind speed or radiation event.
6. a kind of heavy gas leakage diffusion simulations as described in claim 1 and inhibition control test system, 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 recording and saving for data, and is connected to controlling terminal, each monitoring point object of real-time display
Manage the variation of parameter；
Or image capture module, hygrometer, anemobiagraph or/and thermometer are additionally provided at the monitoring point, it is real with record acquisition
Image data and meteorological data are tested, and the data acquired are transferred to controlling terminal by data acquisition unit.
7. a kind of heavy gas leakage diffusion simulations as claimed in claim 5 and inhibition control test system, it is characterized in that: each road is managed
Control valve is provided on line；
Or controlling terminal controls each sensor and tester of the pilot system, to carry out intelligent regulation and control to its data.
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