CN107449799B - A kind of Mixed Gases Explosion on-site testing device and assay method - Google Patents
A kind of Mixed Gases Explosion on-site testing device and assay method Download PDFInfo
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- CN107449799B CN107449799B CN201710831664.6A CN201710831664A CN107449799B CN 107449799 B CN107449799 B CN 107449799B CN 201710831664 A CN201710831664 A CN 201710831664A CN 107449799 B CN107449799 B CN 107449799B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/50—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility
- G01N25/54—Investigating or analyzing materials by the use of thermal means by investigating flash-point; by investigating explosibility by determining explosibility
Abstract
The present invention relates to a kind of Mixed Gases Explosion on-site testing device and assay methods, including gas automatic sampling system, explosion cavity and back-fire relief pressure relief system, superhigh temperature ignition system, intelligent control and data acquisition and analysis system, the power supply being arranged in babinet.The mixed gas at scene is automatically drawn into explosion cavity by automatic sampling system, test of igniting is carried out to the unknown mixed gas in explosion chamber body by superhigh temperature ignition system, it measures the pressure, temperature variation in explosion chamber body and carries out explosive quickly judgement, and propose the dual Judging index for the increment for firing process maximum explosion pressure and maximum temperature.Test device of the present invention can realize that the scene of unknown mixed gas is explosive and quickly measure, securely and reliably, easy to operate, can provide experiment decision-making foundation for flammable explosive gas leak scene emergency disposal.
Description
Technical field
The present invention relates to flammable gas explosion testing field, more particularly to a kind of Mixed Gases Explosion on-the-spot test dress
It sets and assay method.
Background technology
In recent years, dangerous material fire explosion in China's is multiple, consequence is serious, is brought for fire brigade's emergency management and rescue disposition
New problem and challenge, the inflammable and explosive mixed-gas environment detection of multicomponent especially unknown to scene and explosion sex determination are outstanding
It is important.
It is mostly compared and is judged with explosion limit range with concentration sensing modality at present, lacked field portable and quickly explode
Sexual orientation measurement device.
Currently, the experimental provision about burning mixture explosion sex determination is divided into tubular type method of testing both at home and abroad and ball-type is surveyed
Examination method（5L、12L、20l、1m3）, relevant criterion includes GB/T 12474-2008, GB/T 21844-2008, EN 1839, ASTM
E681, DIN51649 etc..Four kinds of different experimental provisions and method are used to measure the explosion pole of gas under atmospheric pressure in the world
Limit.Above-mentioned experimental facilities is laboratory instrumentation, does not have live quickly explosive analysis judgement；And fuel gas is quick-fried
Fried decision procedure is range estimation directly observation, does not have a variety of quantitative judgements of blast pressure and flame temperature.Meanwhile existing gas
The concentration sensor of body explosion environment for unknown multi-component judgement there are numerous uncertainties, with laboratory surveyed by alarm threshold value
On the basis of determining explosion limit, gaseity is mixed there is some difference property with scene.
Invention content
To overcome above-mentioned problems of the prior art, the present invention to provide a kind of Mixed Gases Explosion on-the-spot test dress
It sets and assay method, can be used for automatic sampling and quickly test of the explosive gas atmosphere scene to unknown Mixed Gases Explosion
Judgement.The device uses superhigh temperature platinum thermal ignition mode, real with the dual explosive criterion of pressure change and temperature change
The automatic gas sampling of scene mixed gas and explosive test judgement.
To achieve the above object, used specific technical solution is the present invention：A kind of Mixed Gases Explosion scene survey
Trial assembly is set, it is characterised in that：Including the automatic sampling system, explosion cavity and back-fire relief pressure release system being arranged in portable babinet
System, superhigh temperature ignition system, intelligent control and data acquisition and analysis system, power supply；
The automatic sampling system includes sampling hose, explosion-proof sampling pump, spark arrester I, blocked valve I；
The explosion cavity and back-fire relief pressure relief system includes explosion cavity, multiplex roles crossover flange, blocked valve II, back-fire relief
Device II, spark arrester III, rupture disk, the explosion cavity are hollow tubular body or orbicule or tank-like body；
The superhigh temperature ignition system is platinum ignition wire, and the platinum ignition wire is installed in explosion chamber body；
The intelligent control and data acquisition and analysis system includes mixed-signal processor, high-speed data acquisition storage mould
Block, touch screen colour liquid crystal display device, wireless data communication module I, wireless data communication module II, multichannel drive module, height
Ram compression force snesor and high-speed temperature sensors；
The portable babinet is rectangle, is made of chamber and case lid, chamber and case lid are by hinge connection, portable babinet
Using light aluminum alloy material；
The air-breathing interface of the explosion-proof sampling pump passes through the side of chamber to guide to outside portable babinet, samples the outlet of hose
Mouth is connect with the air-breathing interface of explosion-proof sampling pump, and the air inlet for sampling hose guides to the live mixed gas of scene sucking, explosion-proof to adopt
The exhaust port of sample pump is connect by spark arrester I with I one end of blocked valve, and one end of the other end and explosion cavity of blocked valve I connects
Connect, the other end of the cavity that explodes installs multiplex roles crossover flange, an interface of multiplex roles crossover flange by spark arrester II with
Rupture disk connects, and the automatic back-fire relief of superpressure for the cavity that explodes is released, another interface of multiplex roles crossover flange passes through blocking
Valve II is connect with spark arrester III, and the controlled back-fire relief for the cavity that explodes is released；
The high-speed pressure transducer and high-speed temperature sensors are separately mounted to the outside of explosion cavity, with high speed pressure
Side wall, the temperature sensing being connect with high-speed temperature sensors is arranged in explosion chamber body in the pressure sensor probe of sensor connection
Device probe is arranged in platinum ignition wire and explosion chamber body among side wall, the pressure and temperature letter being respectively intended in acquisition explosion chamber body
Number；
The mixed-signal processor respectively with high-speed data acquisition memory module, touch screen colour liquid crystal display device, nothing
Line data communication module I is connected with multichannel drive module, and the high-speed data acquisition memory module is sensed with high speed pressure respectively
Device, high-speed temperature sensors connection, wireless data communication module II are connect with the terminal of remote control center, wireless data communication
Data wireless transmission can be achieved in module I and wireless data communication module II, and intelligent control and data acquisition and analysis system pass through nothing
Remote wireless control, the multichannel drive module and superelevation can be achieved in line data communication module I and wireless data communication module II
The platinum ignition wire of warm ignition system connects；
Power supply is that intelligent control and data acquisition and analysis system are powered.
A kind of assay method of Mixed Gases Explosion on-site testing device, which is characterized in that steps are as follows：
Portable babinet is arranged the detection zone at the mixed-gas environment scene for needing to measure, will sampled soft by the first step
The air inlet of pipe guides to the live mixed gas of scene sucking, opens case lid, opens power supply, self-check of device, the normal touch screen of self-test
Colour liquid crystal display device shows main menu, if device is faulty, shows abort situation, closes power supply at this time, with reference to specification
Troubleshooting is carried out, power supply is then reopened, until self-test is normal and shows main menu；
Bis- Walk start test, intelligent control and data acquisition and analysis system by operating touch screen colour liquid crystal display device
Initial pressure P in automatic collection explosion chamber body0With initial temperature T0 Later, intelligent control and data acquisition and analysis system is mixed
Close signal processor control multichannel drive module driving platinum ignition wire igniting, execute primary blank firing action, intelligent control and
Data acquisition and analysis system automatic collection and the maximum pressure value P during capturing blank firing action in explosion chamber bodyMAXAnd highest
Temperature value TMAX , calculate the maximum value △ P of pressure change caused by platinum ignition wire ignition energyKBWith temperature change
Maximum value △ TKB
△PKB=PMAX-P0
△TKB=TMAX-T0；
The mixed-signal processor of tri- Walk, intelligent control and data acquisition and analysis system controls multichannel drive module, will
Blocked valve I and blocked valve II are opened, and start explosion-proof sampling pump, sample hose inlet end collection site gaseous mixture, gaseous mixture according to
It is secondary to be injected into explosion chamber body by the air-breathing interface of explosion-proof sampling pump, exhaust port, spark arrester I and blocked valve I, while will be quick-fried
Original gas displacement in fried cavity is that the mixed gas of collection in worksite realizes automatic sampling, original gas in explosion chamber body
It passes sequentially through outside III safety relief to device of blocked valve II and spark arrester；
After the completion of sampling, the mixed-signal processor control multichannel of intelligent control and data acquisition and analysis system drives mould
Blocked valve I, blocked valve II and explosion-proof sampling pump, cut-out explosion cavity and external linkage is automatically closed in block；
Initial pressure P in 4th step, intelligent control and data acquisition and analysis system automatic collection explosion chamber body0With it is initial
Temperature T0 Then, the mixed-signal processor of intelligent control and data acquisition and analysis system control multichannel drive module drives platinum point
Fiery silk igniting, igniting test is carried out to the live mixed gas in explosion chamber body,
The surface temperature of platinum ignition wire ignition point is up to 1500 DEG C, gaseous mixture that can be in reliable ignition explosion chamber body
Body, while starting high-speed data acquisition memory module, it is passed by high-speed pressure transducer pressure sensor probe and high-speed temperature
Sensor temperature sensor probe is to the continuous Quick Acquisition of pressure and temperature in explosion chamber body and data file is recorded, and has lighted a fire
Cheng Hou analyzes the pressure and temperature data acquired during igniting by intelligent control and data analysis system, obtains a little
Maximum pressure value P during fire in explosion chamber bodyMAXWith maximum temperature value TMAX , calculate pressure during platinum igniting test
The maximum value △ P of variationCSWith the maximum value △ T of temperature changeCS
△PCS=PMAX-P0
△TCS=TMAX-T0
According to explosive criterion：△PCS＞ △ PKB+PZOr
△TCS＞ △ TKB+TZ
PZ :For integrated environment factor determine pressure value,
PZ :For integrated environment factor determine temperature value,
Whether as explosive gas, automatic decision are explosive mixed gas, aobvious by touch screen colour liquid crystal display device
Show test result, meanwhile, by showing pressure-time curve and temperature-time curve progress visualization processing during lighting a fire,
Whether explode in intuitive reflection explosion chamber body；
The multiplex roles crossover flange of back-fire relief pressure relief system includes two interfaces i.e. two pressure release passages, multiplex roles crossover flange
A pressure release passage be to realize that the automatic back-fire relief of superpressure of explosion cavity is released by spark arrester II and rupture disk, when explosion cavity
When interior pressure is more than the fracture pressure of rupture disk, rupture disk rupture, explosion cavity internal pressure is prevented by II safety relief of spark arrester
Only explode cavity crack damage, another pressure release passage is the controlled resistance that explosion cavity is realized by blocked valve II and spark arrester III
Fire is released, and after the completion of igniting test, intelligent control and data acquisition and analysis system pass through temperature and pressure to inside cavity of exploding
Power automatically controls multichannel drive module opening blocked valve II after carrying out analysis, and explosion cavity internal pressure is passed through spark arrester III
Safety relief；
5th step, after the residual gas in explosion chamber body carries out safety relief disposition, equipment returns to original state；
Data wireless transmission can be achieved between wireless data communication module I and wireless data communication module II, without
WLAN supports that wireless data communication module I is connect with intelligent control and data acquisition and analysis system, wireless data communication
Module II is connect with the terminal of remote control center, and intelligent control and data acquisition and analysis system pass through wireless data communication module
I and wireless data communication module II remote wireless control can be achieved, and test data is wirelessly uploaded into remote control center
Terminal.
The beneficial effects of the invention are as follows：The present invention can be used for explosive gas atmosphere scene, it can be achieved that unknown gaseous mixture
The volatile automatic sampling of body and quick test judgement.
The present invention and laboratory tradition visual observations flame propagation state are explosive different to determine whether to have, and use is quick-fried
The variable quantity of maximum explosion pressure and maximum temperature and the initial pressure P0 or initial temperature T0 at initial ignition moment in fried cavity
Carry out quick, intelligent judgement, improve the objectivity of determination data, reduces the error of artificial range estimation judgement.
The present invention directly judges the explosivity of mixed gas using live igniting test, flammable with current measurement mixed gas
Concentration of component and experimental determination explosible limit concentration relatively judge explosive different, and the present apparatus is tested gas sample and adopted for scene
Collection mixing gas sample, test result more objective reality reduce error and uncertainty that unknown multicomponent mixture strength measures.
0.1 kPa of pressure detecting resolution ratio, detection speed≤200us in explosion chamber body of the present invention；Temperature detecting precision 0.1
DEG C, detection speed≤200us is, it can be achieved that high speed and precision pressure and the explosive Judging index of two kinds of high-speed flame temperature are quickly surveyed
It is fixed, improve the accuracy of explosion phenomenon judgement.
Apparatus of the present invention realize data wireless transmission and separate men from machines, and securely and reliably, performance is stablized, easy to operate.
The present invention moves live security area, evacuation Division, emergency rescue device disposition, urban pipe network construction maintenance
Fiery operation etc. has important practical significance, and can improve fire-fighting and rescue people to take further Disposal Measures to provide scientific basis
The ability of member's site disposal.
The present invention also provides a kind of new explosion phenomenon determination method for other explosive tests.
Description of the drawings
Fig. 1 is the system structure diagram of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used for explaining the present invention, not
For limiting the present invention.
As shown in Figure 1, a kind of Mixed Gases Explosion on-site testing device, including be arranged in portable babinet 6 from
Dynamic sampling system 1, explosion cavity and back-fire relief pressure relief system 2, superhigh temperature ignition system 3, intelligent control and data collection and analysis system
System 4, power supply 5.
Automatic sampling system 1 includes sampling hose 1-1, explosion-proof sampling pump 1-2, I 1-3 of spark arrester, I 1-4 of blocked valve.
Explode cavity and back-fire relief pressure relief system 2 include explosion cavity 2-1, multiplex roles crossover flange 2-2, II 2-5 of blocked valve,
II 2-3 of spark arrester, III 2-6 of spark arrester, rupture disk 2-4, explosion cavity 2-1 are hollow tubular body or orbicule or tank-like body.
Superhigh temperature ignition system 3 is platinum ignition wire 3-1, and platinum ignition wire 3-1 is installed in explosion cavity 2-1.
Intelligent control and data acquisition and analysis system 4 include mixed-signal processor 4-1, high-speed data acquisition memory module
4-2, touch screen colour liquid crystal display device 4-3, wireless data communication module I 4-4, II 4-5 of wireless data communication module, multichannel are driven
Dynamic model block 4-6, high-speed pressure transducer 4-7 and high-speed temperature sensors 4-8.
Portable babinet 6 is rectangle, is made of chamber and case lid, by hinge connection, portable babinet 6 is adopted for chamber and case lid
With light aluminum alloy material.
It passes through the side of chamber to guide to outside portable babinet 6 the air-breathing interface 1-21 of explosion-proof sampling pump 1-2, samples hose
The gas outlet of 1-1 is connect with the air-breathing interface 1-21 of explosion-proof sampling pump 1-2, and the air inlet of sampling hose 1-1 guides to live sucking
The exhaust port 1-22 of live mixed gas, explosion-proof sampling pump 1-2 is connect by I 1-3 of spark arrester with I one end 1-4 of blocked valve, resistance
The other end of I 1-4 of disconnected valve is connect with one end of explosion cavity 2-1, and the other end of explosion cavity 2-1 installs multiplex roles crossover flange
An interface of 2-2, multiplex roles crossover flange 2-2 are connect by II 2-3 of spark arrester with rupture disk 2-4, for the cavity 2-1 that explodes
The automatic back-fire relief of superpressure release, another interface of multiplex roles crossover flange 2-2 passes through II 2-5 of blocked valve and III 2-6 of spark arrester
Connection, the controlled back-fire relief for the cavity 2-1 that explodes are released.
High-speed pressure transducer 4-7 and high-speed temperature sensors 4-8 is separately mounted to the outside of explosion cavity 2-1, with height
The pressure sensor probe 4-71 settings of ram compression force snesor 4-7 connections are sensed in explosion cavity 2-1 madial walls with high-speed temperature
The temperature sensor probe 4-81 settings of device 4-8 connections are used respectively among platinum ignition wire 3-1 and explosion cavity 2-1 madial walls
To acquire the pressure and temperature signal in explosion cavity 2-1.
Mixed-signal processor 4-1 respectively with high-speed data acquisition memory module 4-2, touch screen colour liquid crystal display device 4-
3, wireless data communication module I 4-4 is connected with multichannel drive module 4-6, high-speed data acquisition memory module 4-2 respectively with high speed
Pressure sensor 4-7, high-speed temperature sensors 4-8 connections, the terminal of wireless data communication module II 4-5 and remote control center
Connection, wireless data communication module I 4-4 and II 4-5 of wireless data communication module can realize that data are wirelessly transferred, intelligent control and
Data acquisition and analysis system 4 can realize long-range nothing by wireless data communication module I 4-4 and II 4-5 of wireless data communication module
Line traffic control, the multichannel drive module 4-6 are connect with the platinum ignition wire 3-1 of superhigh temperature ignition system 3.
Power supply 5 is charged lithium cells group 5-1, and charged lithium cells group 5-1 can be charged by vehicle power supply or pass through adapter
It is charged by ± 20% 50Hz power supply systems of AV220V, power supply 5 is that intelligent control and data acquisition and analysis system 4 are powered.
A kind of assay method of Mixed Gases Explosion on-site testing device, steps are as follows：
Portable babinet 6 is arranged the detection zone at the mixed-gas environment scene for needing to measure, will sampled soft by the first step
The air inlet of pipe 1-1 guides to the live mixed gas of scene sucking, opens case lid, opens power supply 5, self-check of device, self-test is normally touched
It touches screen colour liquid crystal display device 4-3 and shows main menu, if device is faulty, show abort situation, close power supply 5, ginseng at this time
Book carries out troubleshooting as directed, then reopens power supply 5, until self-test is normal and shows main menu.
Bis- Walk start test, intelligent control and data collection and analysis system by operating touch screen colour liquid crystal display device 4-3
The initial pressure P that 4 automatic collections of uniting are exploded in cavity 2-10With initial temperature T0 Later, intelligent control and data collection and analysis system
The mixed-signal processor 4-1 control multichannel drive module 4-6 driving platinum ignition wire 3-1 igniting of system 4, executes primary blank igniting
Action, intelligent control and 4 automatic collection of data acquisition and analysis system are simultaneously exploded in cavity 2-1 during capturing blank firing action
Maximum pressure value PMAXWith maximum temperature value TMAX , pressure change caused by calculating platinum ignition wire 3-1 ignition energies is most
Big value △ PKBWith the maximum value △ T of temperature changeKB
△PKB=PMAX-P0
△TKB=TMAX-T0。
The mixed-signal processor 4-1 of tri- Walk, intelligent control and data acquisition and analysis system 4 controls multichannel drive module
I 1-4 of blocked valve and II 2-5 of blocked valve are opened, and are started explosion-proof sampling pump 1-2 by 4-6, and sampling hose 1-1 inlet ends acquisition is existing
Gaseous mixture, gaseous mixture pass sequentially through the air-breathing interface 1-21 of explosion-proof sampling pump 1-2, exhaust port 1-22, I 1-3 of spark arrester and
I 1-4 of blocked valve is injected into explosion cavity 2-1, while the original gas displacement in cavity 2-1 that will explode is collection in worksite
Mixed gas realizes that automatic sampling, original gas in explosion cavity 2-1 pass sequentially through III 2-6 of II 2-5 of blocked valve and spark arrester
Outside safety relief to device；
After the completion of sampling, the mixed-signal processor 4-1 control multichannel drivings of intelligent control and data acquisition and analysis system 4
I 1-4 of blocked valve, II 2-5 of blocked valve and explosion-proof sampling pump 1-2, cut-out explosion cavity 2-1 and outer chains are automatically closed in module 4-6
It connects.
Initial pressure P in 4th step, intelligent control and 4 automatic collection of data acquisition and analysis system explosion cavity 2-10With
Initial temperature T0 Then, the mixed-signal processor 4-1 of intelligent control and data acquisition and analysis system 4 controls multichannel drive module
4-6 drives the 3-1 igniting of platinum ignition wire, and igniting test, platinum ignition wire 3-1 are carried out to the live mixed gas in explosion cavity 2-1
The surface temperature of ignition point is up to 1500 DEG C, mixed gas that can be in reliable ignition explosion chamber body, while starting high speed number
According to acquisition memory module 4-2, pass through high-speed pressure transducer 4-7 pressure sensors probe 4-71 and high-speed temperature sensors 4-8
Temperature sensor probe 4-81 is to the continuous Quick Acquisition of pressure and temperature in explosion cavity 2-1 and data file is recorded, point
After the completion of fire, the pressure and temperature data acquired during igniting are analyzed by intelligent control and data analysis system 4, are obtained
To the maximum pressure value P during igniting in explosion chamber body 2-1MAXWith maximum temperature value TMAX , calculate platinum igniting test
The maximum value △ P of period pressure changeCSWith the maximum value △ T of temperature changeCS
△PCS=PMAX-P0
△TCS=TMAX-T0
According to explosive criterion：△PCS＞ △ PKB+PZOr
△TCS＞ △ TKB+TZ
PZ :For integrated environment factor determine pressure value,
PZ :For integrated environment factor determine temperature value,
Whether as explosive gas, automatic decision are explosive mixed gas, pass through touch screen colour liquid crystal display device 4-3
Show test result, meanwhile, pressure-time curve and temperature-time curve during being lighted a fire by display carry out at visualization
Reason, it is intuitive to reflect in explosion cavity 2-1 whether explode；
The multiplex roles crossover flange 2-2 of back-fire relief pressure relief system includes two interfaces i.e. two pressure release passages, multiplex roles conversion
A pressure release passage of flange 2-2 is to realize that the superpressure of explosion cavity 2-1 hinders automatically by II 2-3 of spark arrester and rupture disk 2-4
Fire is released, when pressure is more than the fracture pressure of rupture disk 2-4 in the cavity 2-1 that explodes, rupture disk 2-4 ruptures, and explosion cavity 2-1
Interior pressure prevents explosion cavity 2-1 crack damages, another pressure release passage is to pass through resistance by II 2-3 safety reliefs of spark arrester
Disconnected II 2-5 of valve and III 2-6 of spark arrester realizes that the controlled back-fire relief of explosion cavity 2-1 is released, after the completion of igniting test, intelligent control and
Data acquisition and analysis system 4 automatically controls multichannel after carrying out analysis to the temperature and pressure inside explosion cavity 2-1
Drive module 4-6 opens II 2-5 of blocked valve, and pressure in explosion cavity 2-1 is passed through III 2-6 safety reliefs of spark arrester.
5th step, after the residual gas to explode in cavity 2-1 carries out safety relief disposition, equipment returns to original state.
Data wireless transmission can be achieved between II 4-5 of wireless data communication module I 4-4 and wireless data communication module, and
WLAN support is not needed, wireless data communication module I 4-4 is connect with intelligent control and data acquisition and analysis system 4, nothing
The terminal of II 4-5 of line data communication module and remote control center connects, and intelligent control and data acquisition and analysis system 4 pass through nothing
I 4-4 of line data communication module and II 4-5 of wireless data communication module can realize remote wireless control, and test data is wireless
Upload to the terminal of remote control center.
Claims (3)
1. a kind of Mixed Gases Explosion on-site testing device, it is characterised in that：Including being arranged in portable babinet（6）It is interior from
Dynamic sampling system（1）, explosion cavity and back-fire relief pressure relief system（2）, superhigh temperature ignition system（3）, intelligent control and data acquisition
Analysis system（4）, power supply（5）；
The automatic sampling system（1）Including sampling hose（1-1）, explosion-proof sampling pump（1-2）, spark arrester I（1-3）, blocked valve I
（1-4）；
The explosion cavity and back-fire relief pressure relief system（2）Including the cavity that explodes（2-1）, multiplex roles crossover flange（2-2）, block
Valve II（2-5）, spark arrester II（2-3）, spark arrester III（2-6）, rupture disk（2-4）, the explosion cavity（2-1）For hollow pipe
Shape body or orbicule or tank-like body；
The superhigh temperature ignition system（3）For platinum ignition wire（3-1）, the platinum ignition wire（3-1）It is installed on explosion cavity（2-1）
It is interior；
The intelligent control and data acquisition and analysis system（4）Including mixed-signal processor（4-1）, high-speed data acquisition deposits
Store up module（4-2）, touch screen colour liquid crystal display device（4-3）, wireless data communication module I（4-4）, wireless data communication module
Ⅱ（4-5）, multichannel drive module（4-6）, high-speed pressure transducer（4-7）And high-speed temperature sensors（4-8）；
The portable babinet（6）It for rectangle, is made of chamber and case lid, chamber and case lid are by hinge connection, portable babinet
（6）Using light aluminum alloy material；
The explosion-proof sampling pump（1-2）Air-breathing interface（1-21）Portable babinet is guided to across the side of chamber（6）Outside, it samples
Hose（1-1）Gas outlet and explosion-proof sampling pump（1-2）Air-breathing interface（1-21）Connection samples hose（1-1）Air inlet
Guide to the live mixed gas of scene sucking, explosion-proof sampling pump（1-2）Exhaust port（1-22）Pass through spark arrester I（1-3）With resistance
Disconnected valve I（1-4）One end connects, blocked valve I（1-4）The other end with explosion cavity（2-1）One end connection, explode cavity（2-
1）The other end install multiplex roles crossover flange（2-2）, multiplex roles crossover flange（2-2）An interface pass through spark arrester II
（2-3）With rupture disk（2-4）Connection, for the cavity that explodes（2-1）The automatic back-fire relief of superpressure release, multiplex roles crossover flange（2-
2）Another interface pass through blocked valve II（2-5）With spark arrester III（2-6）Connection, for the cavity that explodes（2-1）Controlled resistance
Fire is released；
The high-speed pressure transducer（4-7）And high-speed temperature sensors（4-8）It is separately mounted to explosion cavity（2-1）It is outer
Face, with high-speed pressure transducer（4-7）The pressure sensor of connection is popped one's head in（4-71）Setting is in explosion cavity（2-1）Madial wall,
With high-speed temperature sensors（4-8）The temperature sensor probe of connection（4-81）It is arranged in platinum ignition wire（3-1）With explosion cavity
（2-1）Among madial wall, it is respectively intended to acquisition explosion cavity（2-1）Interior pressure and temperature signal；
The mixed-signal processor（4-1）Respectively with high-speed data acquisition memory module（4-2）, touch screen Color Liquid Crystal Display
Device（4-3）, wireless data communication module I（4-4）With multichannel drive module（4-6）Connection, the high-speed data acquisition store mould
Block（4-2）Respectively with high-speed pressure transducer（4-7）, high-speed temperature sensors（4-8）Connection, wireless data communication module II
（4-5）It is connect with the terminal of remote control center, wireless data communication module I（4-4）With wireless data communication module II（4-5）
Data wireless transmission, intelligent control and data acquisition and analysis system can be achieved（4）Pass through wireless data communication module I（4-4）With
Wireless data communication module II（4-5）Remote wireless control, the multichannel drive module can be achieved（4-6）It lights a fire with superhigh temperature and is
System（3）Platinum ignition wire（3-1）Connection；
Power supply（5）For intelligent control and data acquisition and analysis system（4）Power supply.
2. a kind of Mixed Gases Explosion on-site testing device according to claim 1, it is characterised in that：The power supply
（5）For charged lithium cells group（5-1）, charged lithium cells group（5-1）Can by vehicle power supply charge or by adapter by
± 20% 50Hz power supply systems of AV220V charge.
3. a kind of assay method using Mixed Gases Explosion on-site testing device described in claim 1, which is characterized in that
Steps are as follows：
The first step, by portable babinet（6）Detection zone at the mixed-gas environment scene for needing to measure is set, hose will be sampled
（1-1）Air inlet guide to the live mixed gas of scene sucking, open case lid, open power supply（5）, self-check of device, self-test is normal
Touch screen colour liquid crystal display device（4-3）It shows main menu, if device is faulty, shows abort situation, close power supply at this time
（5）, troubleshooting is carried out with reference to specification, then reopens power supply（5）, until self-test is normal and shows main menu；
Bis- Walk, by operating touch screen colour liquid crystal display device（4-3）Start test, intelligent control and data acquisition and analysis system
（4）Automatic collection explosion cavity（2-1）Interior initial pressure P0With initial temperature T0Later, intelligent control and data collection and analysis
System（4）Mixed-signal processor（4-1）Control multichannel drive module（4-6）Drive platinum ignition wire（3-1）Igniting executes one
Secondary blank firing action, intelligent control and data acquisition and analysis system（4）Automatic collection is simultaneously quick-fried during capturing blank firing action
Fried cavity（2-1）Interior maximum pressure value PMAXWith maximum temperature value TMAX, calculate platinum ignition wire（3-1）Ignition energy draws
The maximum value △ P of the pressure change risenKBWith the maximum value △ T of temperature changeKB
△PKB=PMAX-P0
△TKB=TMAX-T0；
Tri- Walk, intelligent control and data acquisition and analysis system（4）Mixed-signal processor（4-1）Control multichannel drive module
（4-6）, by blocked valve I（1-4）With blocked valve II（2-5）It opens, and starts explosion-proof sampling pump（1-2）, sample hose（1-1）Into
Gas end collection site gaseous mixture, gaseous mixture pass sequentially through explosion-proof sampling pump（1-2）Air-breathing interface（1-21）, exhaust port（1-
22）, spark arrester I（1-3）With blocked valve I（1-4）It is injected into explosion cavity（2-1）It is interior, while the cavity that will explode（2-1）Interior original
Some gas displacements are that the mixed gas of collection in worksite realizes automatic sampling, and explode cavity（2-1）Interior original gas leads to successively
Cross blocked valve II（2-5）With spark arrester III（2-6）Outside safety relief to device；
After the completion of sampling, intelligent control and data acquisition and analysis system（4）Mixed-signal processor（4-1）Control multichannel driving
Module（4-6）, blocked valve I is automatically closed（1-4）, blocked valve II（2-5）With explosion-proof sampling pump（1-2）, cut-out explosion cavity（2-
1）With external linkage；
4th step, intelligent control and data acquisition and analysis system（4）Automatic collection explosion cavity（2-1）Interior initial pressure P0With
Initial temperature T0Then, intelligent control and data acquisition and analysis system（4）Mixed-signal processor（4-1）Control multichannel driving
Module（4-6）Drive platinum ignition wire（3-1）Igniting, to the cavity that explodes（2-1）Interior live mixed gas carries out igniting test,
Platinum ignition wire（3-1）The surface temperature of ignition point is up to 1500 DEG C, gaseous mixture that can be in reliable ignition explosion chamber body
Body, while starting high-speed data acquisition memory module（4-2）, pass through high-speed pressure transducer（4-7）Pressure sensor is popped one's head in（4-
71）And high-speed temperature sensors（4-8）Temperature sensor probe（4-81）To the cavity that explodes（2-1）Interior pressure and temperature is continuous
Simultaneously data file is recorded in Quick Acquisition, after the completion of igniting, passes through intelligent control and data analysis system（4）To being adopted during igniting
The pressure and temperature data of collection are analyzed, explosion chamber body during being lighted a fire（2-1）Interior maximum pressure value PMAXAnd highest
Temperature value TMAX , calculate the maximum value △ P of pressure change during platinum igniting is testedCSWith the maximum value △ of temperature change
TCS
△PCS=PMAX-P0
△TCS=TMAX-T0
According to explosive criterion：△PCS＞ △ PKB+PZOr
△TCS＞ △ TKB+TZ
PZ :For integrated environment factor determine pressure value,
PZ :For integrated environment factor determine temperature value,
Whether as explosive gas, automatic decision are explosive mixed gas, pass through touch screen colour liquid crystal display device（4-3）It is aobvious
Show test result, meanwhile, by showing pressure-time curve and temperature-time curve progress visualization processing during lighting a fire,
Intuitive reflection explosion cavity（2-1）Inside whether explode；
The multiplex roles crossover flange of back-fire relief pressure relief system（2-2）Including two interfaces i.e. two pressure release passages, multiplex roles transformation approach
It is blue（2-2）A pressure release passage be by spark arrester II（2-3）And rupture disk（2-4）Realize explosion cavity（2-1）Superpressure
Automatic back-fire relief is released, when explosion cavity（2-1）Interior pressure is more than rupture disk（2-4）Fracture pressure when, rupture disk（2-4）It is broken
It splits, explode cavity（2-1）Interior pressure passes through spark arrester II（2-3）Safety relief prevents explosion cavity（2-1）Crack damage, separately
One pressure release passage is by blocked valve II（2-5）With spark arrester III（2-6）Realize explosion cavity（2-1）Controlled back-fire relief let out
It puts, after the completion of igniting test, intelligent control and data acquisition and analysis system（4）By to the cavity that explodes（2-1）Internal temperature
Multichannel drive module is automatically controlled after carrying out analysis with pressure（4-6）Open blocked valve II（2-5）, by the cavity that explodes（2-
1）Interior pressure passes through spark arrester III（2-6）Safety relief；
5th step, explode cavity（2-1）After interior residual gas carries out safety relief disposition, equipment returns to original state；
Wireless data communication module I（4-4）With wireless data communication module II（4-5）Between can be achieved data wireless transmission, and
WLAN support, wireless data communication module I are not needed（4-4）With intelligent control and data acquisition and analysis system（4）Even
It connects, wireless data communication module II（4-5）It is connect with the terminal of remote control center, intelligent control and data acquisition and analysis system
（4）Pass through wireless data communication module I（4-4）With wireless data communication module II（4-5）Remote wireless control can be achieved, and will
Test data wirelessly uploads to the terminal of remote control center.
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| CN109632884B (en) * | 2018-12-29 | 2021-11-09 | 广州特种机电设备检测研究院 | Explosion testing device and method for uniformly distributing dust cloud in mixed gas environment |
| CN112305022B (en) * | 2020-11-29 | 2023-02-21 | 上海化工院检测有限公司 | Variable-pressure gas explosiveness testing device driven by double-acting air cylinder |
| CN113049419A (en) * | 2021-03-08 | 2021-06-29 | 中国人民解放军61699部队 | Performance test method of explosion-proof decontamination integrated disposal system |
| CN113063526B (en) * | 2021-03-08 | 2023-10-27 | 中国人民解放军61699部队 | Monitoring function test method for chemical-resistant explosion-proof tank |
| CN113203958B (en) * | 2021-04-14 | 2022-11-25 | 中国汽车技术研究中心有限公司 | Method for evaluating thermal runaway explosion hazard of battery |
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Address after: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Co-patentee after: Jilin Hongyuan Science Instrument Co., Ltd. Patentee after: Tianjin Institute of Fire Protection, Ministry of Emergency Management Address before: 300381 Nankai District Jin Wei South Road, No. 110, Tianjin Co-patentee before: Jilin Hongyuan Science Instrument Co., Ltd. Patentee before: Tianjin Fire Fighting Inst., Ministry of Public Security |