CN107449799A - 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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Abstract
The present invention relates to a kind of Mixed Gases Explosion on-site testing device and assay method, including gas automatic sampling system, blast 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 casing.The mixed gas at scene is automatically drawn into blast 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, determine the pressure, temperature variation in explosion chamber body and carry out explosive quick 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 the explosive quick measure in the scene of unknown mixed gas, securely and reliably, easy to operate, and experiment decision-making foundation can be provided 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
Put 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 disposal
The problem of new and challenge, the inflammable and explosive mixed-gas environment detection of multicomponent especially unknown to scene and blast sex determination are outstanding
To be important.
More compared with concentration sensing modality with explosion limit scope is judged at present, is lacked field portable and is quickly exploded
Sexual orientation determines device.
At present, the experimental provision both at home and abroad on burning mixture blast sex determination is divided into tubular type method of testing and ball is surveyed
Examination method（5L、12L、20l、1m3）, relevant criterion include GB/T 12474-2008, GB/T 21844-2008, EN 1839, ASTM
E681, DIN51649 etc..In the world using the blast pole of gas under four kinds of different experimental provisions and method measure atmospheric pressure
Limit.Above-mentioned experimental facilities is laboratory instrumentation, does not possess live quick explosive analysis and judges；And fuel gas is quick-fried
Fried decision procedure is range estimation directly observation, does not possess a variety of quantitative judgements of blast pressure and flame temperature.Meanwhile existing gas
There are numerous uncertainties in the concentration sensor of body explosion environment, alarm threshold value is surveyed with laboratory for unknown multi-component judgement
On the basis of determining explosion limit, gaseity is mixed there is some difference property with scene.
The content of the invention
To overcome above-mentioned problems of the prior art, the present invention provides a kind of Mixed Gases Explosion on-the-spot test dress
Put and assay method, available for automatic sampling of the explosive gas atmosphere scene to unknown Mixed Gases Explosion and quick test
Judge.The device employs superhigh temperature platinum thermal ignition mode, real with the dual explosive criterion of pressure change and temperature change
The automatic gas sampling of existing live mixed gas and explosive test judgement.
To achieve the above object, used concrete technical scheme is the present invention：A kind of Mixed Gases Explosion scene is surveyed
Trial assembly is put, it is characterised in that：Including the automatic sampling system, blast cavity and back-fire relief pressure release system being arranged in portable casing
System, superhigh temperature ignition system, intelligent control and data acquisition and analysis system, power supply；
The automatic sampling system includes sampling flexible pipe, explosion-proof sampling pump, spark arrester I, blocked valve I；
Described blast cavity and back-fire relief pressure relief system include blast cavity, multiplex roles crossover flange, blocked valve II, spark arrester
IIth, spark arrester III, rupture disk, the blast cavity is 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；
Described intelligent control and data acquisition and analysis system include mixed-signal processor, high-speed data acquisition memory module,
Touch-screen colour liquid crystal display device, wireless data communication module I, wireless data communication module II, multichannel drive module, high ram compression
Force snesor and high-speed temperature sensors；
The portable casing is rectangle, is made up of chamber and case lid, and chamber and case lid are used by hinge connection, portable casing
Light aluminum alloy material；
The air-breathing interface of the explosion-proof sampling pump is guided to outside portable casing through the side of chamber, sample the gas outlet of flexible pipe with
The air-breathing interface connection of explosion-proof sampling pump, the air inlet for sampling flexible pipe guide to the live mixed gas of scene suction, explosion-proof sampling pump
Exhaust port be connected by spark arrester I with the one end of blocked valve I, the other end of blocked valve I is connected with the one end for the cavity that explodes, quick-fried
The other end installation multiplex roles crossover flange of fried cavity, an interface of multiplex roles crossover flange pass through spark arrester II and rupture disk
Connection, the automatic back-fire relief of superpressure for the cavity that explodes releases, another interface of multiplex roles crossover flange by blocked valve II with
Spark arrester III is connected, 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 blast cavity, are sensed with high speed pressure
The pressure sensor probe of device connection is arranged on side wall in explosion chamber body, and the temperature sensor being connected with high-speed temperature sensors is visited
Head is arranged among side wall, to be respectively intended to gather the pressure and temperature signal in explosion chamber body in platinum ignition wire and explosion chamber body；
The mixed-signal processor is respectively with high-speed data acquisition memory module, touch-screen colour liquid crystal display device, without line number
Connected according to communication module I with multichannel drive module, the high-speed data acquisition memory module respectively with high-speed pressure transducer, height
Fast temperature sensor connection, wireless data communication module II are connected with the terminal of remote control center, wireless data communication module I
Data can be achieved with wireless data communication module II to be wirelessly transferred, intelligent control and data acquisition and analysis system pass through wireless data
Remote wireless control is can be achieved in communication module I and wireless data communication module II, and the multichannel drive module is lighted a fire with superhigh temperature
The platinum ignition wire connection of system；
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, it is characterised in that step is as follows：
The first step, portable casing is arranged on to the detection zone at the mixed-gas environment scene for needing to determine, flexible pipe will be sampled
Air inlet guides to scene and sucks live mixed gas, opens case lid, turns on the power, self-check of device, and the normal touch-screen of self-test is colored
Liquid crystal display shows main menu, if device is faulty, shows abort situation, now closes power supply, is carried out with reference to specification
Troubleshooting, power supply is then reopened, until self-test is normal and shows main menu；
Bis- Walk, start test by operating touch screen colour liquid crystal display device, intelligent control and data acquisition and analysis system are automatic
Gather the initial pressure P in explosion chamber body0With initial temperature T0 Afterwards, the mixing letter of intelligent control and data acquisition and analysis system
The control multichannel drive module driving platinum ignition wire igniting of number processor, performs primary blank firing action, intelligent control and data
Acquisition analysis system automatic data collection and the maximum pressure value P during catching blank firing action in explosion chamber bodyMAXAnd the highest temperature
Angle value TMAX , calculate the maximum △ P of pressure change caused by platinum ignition wire ignition energyKBWith temperature change most
Big value △ TKB
△PKB=PMAX-P0
△TKB=TMAX-T0；
The mixed-signal processor control multichannel drive module of tri- Walk, intelligent control and data acquisition and analysis system, will be blocked
Valve I and blocked valve II are opened, and start explosion-proof sampling pump, sample flexible pipe inlet end collection site gaseous mixture, and gaseous mixture leads to successively
Air-breathing interface, exhaust port, spark arrester I and the blocked valve I for crossing explosion-proof sampling pump are injected into explosion chamber body, while by explosion chamber
Internal original gas displacement realizes and sampled automatically that original gas in explosion chamber body is successively for the mixed gas of collection in worksite
Outside blocked valve II and the safety relief of spark arrester III to device；
After the completion of sampling, the mixed-signal processor control multichannel drive module of intelligent control and data acquisition and analysis system, from
It is dynamic to close blocked valve I, blocked valve II and explosion-proof sampling pump, cut-out blast cavity and external linkage；
Initial pressure P in 4th step, intelligent control and data acquisition and analysis system automatic data collection explosion chamber body0And initial temperature
T0 Then, the mixed-signal processor of intelligent control and data acquisition and analysis system control multichannel drive module driving platinum ignition wire
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, mixed gas that can be in reliable ignition explosion chamber body, together
Shi Qidong high-speed data acquisition memory modules, pass through high-speed pressure transducer pressure sensor probe and high-speed temperature sensors temperature
Degree sensor probe to the continuous Quick Acquisition of pressure and temperature in explosion chamber body and recorded data file, after the completion of igniting,
The pressure and temperature data gathered during igniting are analyzed by intelligent control and data analysis system, during obtaining igniting
Maximum pressure value P in explosion chamber bodyMAXWith maximum temperature value TMAX , calculate pressure change during platinum igniting is tested
Maximum △ PCSWith the maximum △ T of temperature changeCS
△PCS=PMAX-P0
△TCS=TMAX-T0
According to explosive criterion： △PCS＞△PKB +PZOr
△TCS＞△TKB + TZ
PZ :The pressure value determined for integrated environment factor,
PZ :The temperature value determined for integrated environment factor,
Whether as explosive gas, automatic decision are explosive mixed gas, are shown and surveyed by touch screen colour liquid crystal display device
Test result, meanwhile, by showing pressure-time curve and temperature-time curve progress visualization processing during lighting a fire, intuitively
Whether exploded in reflection explosion chamber body；
The multiplex roles crossover flange of back-fire relief pressure relief system is two pressure release passages including two interfaces, the one of multiplex roles crossover flange
Individual pressure release passage is to realize that the automatic back-fire relief of superpressure of blast cavity is released by spark arrester II and rupture disk, is pressed when in explosion chamber body
When power exceedes the fracture pressure of rupture disk, rupture disk rupture, blast cavity internal pressure is prevented quick-fried by the safety relief of spark arrester II
Fried cavity crack damage, another pressure release passage are to realize that the controlled back-fire relief of blast cavity is let out by blocked valve II and spark arrester III
Put, after the completion of igniting test, intelligent control and data acquisition and analysis system pass through to enter the temperature and pressure for inside cavity of exploding
Multichannel drive module is automatically controlled after row analysis and opens blocked valve II, blast cavity internal pressure is passed through into the safety of spark arrester III
Release；
5th step, after the residual gas in explosion chamber body carries out safety relief disposal, equipment returns to original state；
Data can be achieved between wireless data communication module I and wireless data communication module II to be wirelessly transferred, without wireless
LAN supports that wireless data communication module I is connected with intelligent control and data acquisition and analysis system, wireless data communication module
II is connected with the terminal of remote control center, intelligent control and data acquisition and analysis system by wireless data communication module I and
Remote wireless control is can be achieved in wireless data communication module II, and test data is wirelessly uploaded to the end of remote control center
End.
The beneficial effects of the invention are as follows：The present invention can be used for explosive gas atmosphere scene, can be achieved to unknown gaseous mixture
The volatile automatic sampling of body and quick test judgement.
To determine whether to have, explosivity is different, and use is quick-fried from laboratory tradition visual observations flame propagation state by the present invention
Maximum explosion pressure and maximum temperature and the initial pressure P0 or initial temperature T0 at initial ignition moment variable quantity in fried cavity
Carry out quick, intelligent judgement, improve the objectivity of determination data, reduce the error that artificial range estimation judges.
The present invention directly judges the explosivity of mixed gas using scene igniting test, flammable with measure mixed gas at present
Concentration of component is explosive different relatively to judge from experimental determination explosible limit concentration, and present apparatus test gas sample is adopted for scene
Collection mixing gas sample, test result more objective reality, reduces error and uncertainty that unknown multicomponent mixture strength determines.
The kPa of pressure detecting resolution ratio 0.1, detection speed≤200us in explosion chamber body of the present invention；Temperature detecting precision 0.1
DEG C, detection speed≤200us, two kinds of explosive Judging index of high speed and precision pressure and high-speed flame temperature can be achieved and quickly survey
It is fixed, improve the accuracy of explosion phenomenon judgement.
Apparatus of the present invention realize that data are wirelessly transferred and separate men from machines, and securely and reliably, stable performance is easy to operate.
The present invention moves for live security area, evacuation Division, emergency rescue device disposal, 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 decision method for other explosive tests.
Brief description of the drawings
Fig. 1 is the system structure diagram of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
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 casing 6 from
Dynamic sampling system 1, blast 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 flexible pipe 1-1, explosion-proof sampling pump 1-2, the 1-3 of spark arrester I, the 1-4 of blocked valve I.
Explode cavity and back-fire relief pressure relief system 2 include blast cavity 2-1, multiplex roles crossover flange 2-2, the 2-5 of blocked valve II,
The 2-3 of spark arrester II, the 2-6 of spark arrester III, rupture disk 2-4, blast cavity 2-1 is 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 blast 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, the 4-5 of wireless data communication module II, multichannel are driven
Dynamic model block 4-6, high-speed pressure transducer 4-7 and high-speed temperature sensors 4-8.
Portable casing 6 is rectangle, is made up of chamber and case lid, and chamber and case lid are adopted by hinge connection, portable casing 6
With light aluminum alloy material.
The side of explosion-proof sampling pump 1-2 air-breathing interface 1-21 through chamber is guided to outside portable casing 6, samples flexible pipe
1-1 gas outlet is connected with explosion-proof sampling pump 1-2 air-breathing interface 1-21, and sampling flexible pipe 1-1 air inlet guides to live suction
Live mixed gas, explosion-proof sampling pump 1-2 exhaust port 1-22 are connected by the 1-3 of spark arrester I with the 1-4 one end of blocked valve I, resistance
The disconnected 1-4 of valve I other end is connected with the one end for the cavity 2-1 that explodes, blast cavity 2-1 other end installation multiplex roles crossover flange
2-2, multiplex roles crossover flange 2-2 an interface are connected by the 2-3 of spark arrester II with rupture disk 2-4, for the cavity 2-1 that explodes
The automatic back-fire relief of superpressure release, multiplex roles crossover flange 2-2 another interface passes through the 2-5 of blocked valve II and the 2-6 of spark arrester III
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 blast cavity 2-1 outside, with height
The pressure sensor probe 4-71 of ram compression force snesor 4-7 connections is arranged on blast cavity 2-1 madial walls, is sensed with high-speed temperature
The temperature sensor probe 4-81 of device 4-8 connections is arranged among platinum ignition wire 3-1 and blast cavity 2-1 madial walls, is used respectively
To gather the pressure and temperature signal in blast 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, nothing
The 4-4 of line data communication module I connects with multichannel drive module 4-6, high-speed data acquisition memory module 4-2 respectively with high speed pressure
The terminal of sensor 4-7, high-speed temperature sensors 4-8 connections, the 4-5 of wireless data communication module II and remote control center connects
Connect, wireless data communication module I 4-4 and the 4-5 of wireless data communication module II can realize that data are wirelessly transferred, intelligent control and number
Long distance wireless can be realized by wireless data communication module I 4-4 and the 4-5 of wireless data communication module II according to acquisition analysis system 4
Control, the multichannel drive module 4-6 are connected 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 or passed through adapter by vehicle power
Charged by the 50Hz electric power systems of AV220V ± 20%, 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, step are as follows：
The first step, portable casing 6 is arranged on to the detection zone at the mixed-gas environment scene for needing to determine, flexible pipe 1- will be sampled
1 air inlet guides to scene and sucks live mixed gas, opens case lid, turns on the power 5, self-check of device, the normal touch-screen of self-test
Colour liquid crystal display device 4-3 shows main menu, if device is faulty, shows abort situation, now closes power supply 5, and reference is said
Bright book carries out troubleshooting, 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
Initial pressure P in 4 automatic data collections of uniting blast cavity 2-10With initial temperature T0 Afterwards, 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, performs primary blank igniting
Action, intelligent control and the automatic data collection of data acquisition and analysis system 4 are simultaneously exploded in cavity 2-1 during catching blank firing action
Maximum pressure value PMAXWith maximum temperature value TMAX , calculate pressure change caused by platinum ignition wire 3-1 ignition energies most
Big value △ PKBWith the maximum △ T of temperature changeKB
△PKB=PMAX-P0
△TKB=TMAX-T0。
The mixed-signal processor 4-1 control multichannel drive modules of tri- Walk, intelligent control and data acquisition and analysis system 4
4-6, the 1-4 of the blocked valve I and 2-5 of blocked valve II is opened, and start explosion-proof sampling pump 1-2, sampling flexible pipe 1-1 inlet end collections are existing
Gaseous mixture, gaseous mixture pass sequentially through explosion-proof sampling pump 1-2 air-breathing interface 1-21, exhaust port 1-22, the 1-3 of spark arrester I and
The 1-4 of blocked valve I is injected into blast cavity 2-1, while is collection in worksite by the original gas displacement exploded in cavity 2-1
Mixed gas realizes automatic sampling, and the original gas to explode in cavity 2-1 passes sequentially through the 2-5 of blocked valve II and the 2-6 of spark arrester III
Safety relief is to outside device；
After the completion of sampling, the mixed-signal processor 4-1 control multichannel drive modules of intelligent control and data acquisition and analysis system 4
4-6, it is automatic to close the 1-4 of blocked valve I, the 2-5 of blocked valve II and explosion-proof sampling pump 1-2, cut-out blast cavity 2-1 and external linkage.
Initial pressure P in 4th step, intelligent control and the automatic data collection of data acquisition and analysis system 4 blast 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 driving platinum ignition wire 3-1 igniting, igniting test, platinum ignition wire 3-1 are carried out to the live mixed gas in blast 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 starts high speed number
According to collection 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 blast cavity 2-1 and recorded data file, point
After the completion of fire, the pressure and temperature data gathered during igniting are analyzed by intelligent control and data analysis system 4, 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 △ P of period pressure changeCSWith the maximum △ T of temperature changeCS
△PCS=PMAX-P0
△TCS=TMAX-T0
According to explosive criterion： △PCS＞△PKB +PZ Or
△TCS＞△TKB +TZ
PZ :The pressure value determined for integrated environment factor,
PZ :The temperature value determined for integrated environment factor,
Whether as explosive gas, automatic decision are explosive mixed gas, are shown by touch screen colour liquid crystal display device 4-3
Test result, meanwhile, by showing pressure-time curve and temperature-time curve progress visualization processing during lighting a fire, directly
See in reflection blast cavity 2-1 and whether explode；
The multiplex roles crossover flange 2-2 of back-fire relief pressure relief system is two pressure release passages including two interfaces, multiplex roles crossover flange
A 2-2 pressure release passage is to realize that the blast cavity 2-1 automatic back-fire relief of superpressure is let out by the 2-3 of spark arrester II and rupture disk 2-4
Put, when pressure exceedes rupture disk 2-4 fracture pressure in the cavity 2-1 that explodes, rupture disk 2-4 ruptures, cavity 2-1 internal pressures of exploding
Power prevents the cavity 2-1 crack damages that explode, another pressure release passage is to pass through blocked valve by the 2-3 safety reliefs of spark arrester II
The II 2-5 and 2-6 of spark arrester III realizes that blast cavity 2-1 controlled back-fire relief is released, after the completion of igniting test, intelligent control and data
Acquisition analysis system 4 by blast cavity 2-1 inside temperature and pressure carry out analysis after automatically control multichannel driving
Module 4-6 opens the 2-5 of blocked valve II, and pressure in blast cavity 2-1 is passed through into the 2-6 safety reliefs of spark arrester III.
5th step, after the residual gas to explode in cavity 2-1 carries out safety relief disposal, equipment returns to original state.
Data can be achieved between wireless data communication module I 4-4 and the 4-5 of wireless data communication module II to be wirelessly transferred, and
WLAN is not needed to support, wireless data communication module I 4-4 is connected with intelligent control and data acquisition and analysis system 4, nothing
The terminal of the 4-5 of line data communication module II and remote control center connects, and intelligent control and data acquisition and analysis system 4 pass through nothing
The 4-4 of line data communication module I and the 4-5 of wireless data communication module II can realize remote wireless control, and test data is wireless
Upload to the terminal of remote control center.
Claims (3)
- A kind of 1. Mixed Gases Explosion on-site testing device, it is characterised in that：Including being arranged on portable casing（6）It is interior from Dynamic sampling system（1）, blast 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 flexible pipe（1-1）, explosion-proof sampling pump（1-2）, spark arrester I（1-3）, blocked valve I （1-4）；Described blast 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 blast 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 blast cavity（2-1） It is interior；Described 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 casing（6）For rectangle, it is made up of chamber and case lid, chamber and case lid are by hinge connection, portable casing （6）Using light aluminum alloy material；The explosion-proof sampling pump（1-2）Air-breathing interface（1-21）Portable casing is guided to through the side of chamber（6）Outside, sample Flexible pipe（1-1）Gas outlet and explosion-proof sampling pump（1-2）Air-breathing interface（1-21）Connection, sample flexible pipe（1-1）Air inlet Guide to scene and suck live mixed gas, 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 blast cavity（2-1）One end connection, explode cavity（2- 1）The other end installation 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 the cavity that explodes（2-1）It is outer Face, with high-speed pressure transducer（4-7）The pressure sensor probe of connection（4-71）It is arranged on blast cavity（2-1）Madial wall, With high-speed temperature sensors（4-8）The temperature sensor probe of connection（4-81）It is arranged on platinum ignition wire（3-1）With blast cavity （2-1）Among madial wall, collection blast cavity is respectively intended to（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 connected with the terminal of remote control center, wireless data communication module I（4-4）With wireless data communication module II（4-5） Achievable data are wirelessly transferred, 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, the multichannel drive module can be achieved（4-6）Lighted a fire with superhigh temperature and be System（3）Platinum ignition wire（3-1）Connection；Power supply（5）For intelligent control and data acquisition and analysis system（4）Power supply.
- A kind of 2. 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 charge or by adapter by The 50Hz electric power systems of AV220V ± 20% charge.
- A kind of 3. assay method of Mixed Gases Explosion on-site testing device using described in claim 1, it is characterised in that Step is as follows：The first step, by portable casing（6）The detection zone at the mixed-gas environment scene for needing to determine is arranged on, flexible pipe will be sampled （1-1）Air inlet guide to scene and suck live mixed gas, open case lid, turn on the power（5）, self-check of device, self-test is normal Touch-screen colour liquid crystal display device（4-3）Main menu is shown, if device is faulty, abort situation is shown, now closes power supply （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 data collection blast cavity（2-1）Interior initial pressure P0With initial temperature T0 Afterwards, 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, perform one Secondary blank firing action, intelligent control and data acquisition and analysis system（4）Automatic data collection is simultaneously quick-fried during catching blank firing action Fried cavity（2-1）Interior maximum pressure value PMAXWith maximum temperature value TMAX , calculate platinum ignition wire（3-1）Ignition energy The maximum △ P of caused pressure changeKBWith the maximum △ 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）Open, and start explosion-proof sampling pump（1-2）, sample flexible pipe（1-1）Enter 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 blast cavity（2-1）It is interior, while the cavity that will explode（2-1）Interior original Some gas displacements realize automatic sampling for the mixed gas of collection in worksite, and explode cavity（2-1）Interior original gas leads to successively Cross blocked valve II（2-5）With spark arrester III（2-6）Safety relief is to outside 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）, it is automatic to close blocked valve I（1-4）, blocked valve II（2-5）With explosion-proof sampling pump（1-2）, cut-out blast cavity（2- 1）With external linkage；4th step, intelligent control and data acquisition and analysis system（4）Automatic data collection blast cavity（2-1）Interior initial pressure P0With Initial temperature T0 Then, 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 start 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 Quick Acquisition simultaneously recorded data file, after the completion of igniting, pass 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 platinum igniting test during pressure change maximum △ PCSWith the maximum △ of temperature change TCS△PCS=PMAX-P0△TCS=TMAX-T0According to explosive criterion： △PCS＞ △PKB + PZ Or△TCS＞ △TKB + TZPZ :The pressure value determined for integrated environment factor,PZ :The temperature value determined for integrated environment factor,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, Reflection blast cavity directly perceived（2-1）Inside whether explode；The multiplex roles crossover flange of back-fire relief pressure relief system（2-2）It is two pressure release passages including two interfaces, 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 blast cavity（2-1）Superpressure Automatic back-fire relief is released, when blast cavity（2-1）Interior pressure exceedes rupture disk（2-4）Fracture pressure when, rupture disk（2-4）It is broken Split, explode cavity（2-1）Interior pressure passes through spark arrester II（2-3）Safety relief, prevent the cavity that explodes（2-1）Crack damage, separately One pressure release passage is by blocked valve II（2-5）With spark arrester III（2-6）Realize blast cavity（2-1）Controlled back-fire relief let out Put, 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 disposal, 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 be wirelessly transferred, and WLAN is not needed to support, wireless data communication module I（4-4）With intelligent control and data acquisition and analysis system（4）Even Connect, wireless data communication module II（4-5）It is connected 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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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 |