CN103272350A - LNG and CNG automobile fire-resistant explosion-suppression system - Google Patents
LNG and CNG automobile fire-resistant explosion-suppression system Download PDFInfo
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- CN103272350A CN103272350A CN2013102491272A CN201310249127A CN103272350A CN 103272350 A CN103272350 A CN 103272350A CN 2013102491272 A CN2013102491272 A CN 2013102491272A CN 201310249127 A CN201310249127 A CN 201310249127A CN 103272350 A CN103272350 A CN 103272350A
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- methane concentration
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- lng
- selector valve
- electrodynamic type
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- 230000009970 fire resistant effect Effects 0.000 title abstract 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 126
- 230000005520 electrodynamics Effects 0.000 claims abstract description 36
- 230000001629 suppression Effects 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 238000004880 explosion Methods 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000002329 infrared spectrum Methods 0.000 claims description 2
- 238000002211 ultraviolet spectrum Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 32
- 239000000446 fuel Substances 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000007921 spray Substances 0.000 abstract 1
- 239000003949 liquefied natural gas Substances 0.000 description 33
- 239000007789 gas Substances 0.000 description 22
- 230000002265 prevention Effects 0.000 description 7
- 230000005764 inhibitory process Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to an LNG and CNG automobile fire-resistant explosion-suppression system which comprises a gas extinguishing agent system, a signal acquisition and alarm system, and a control system, wherein the gas extinguishing agent system comprises a gas extinguishing agent storage bottle; an extinguishing agent container valve is mounted at the mouth of the gas extinguishing agent storage bottle and is connected with an extinguishing agent transmission pipeline with a pressure release valve thereon; a plurality of branch pipes are connected in parallel with the extinguishing agent transmission pipeline, and each branch pipe is connected with an electrodynamic selector valve and a spray nozzle in sequence; end parts of the branch pipes extend into an automobile cabin protected area. The system provided by the system has the advantages that prewarning and early inerting suppression are automatically conducted for LNG and CNG automobile fuel outleakage and fires, can give out prewarning in case methane concentration exceeds a pre-arranged value through real timely monitoring outleakage methane concentration and initial flash fire flame, can automatically open a gas suppression system in case the methane concentration of a sealed space exceeds 3 percent of a volume concentration or the flash fire flame appears, and therefore compensates a gap of the LNG and CNG automobile fire-resistant and explosion-proof devices.
Description
Technical field
The present invention relates to a kind of automatic fire extinguisher for automobile, particularly LNG, CNG automobile fireproof and explosion suppression system are applicable to that LNG or CNG are the automobile of power fuel.
Background technology
In the modern society, automobile has become the common instrument of people's life.Along with automobile pollution continue increase, the consumption of petroleum amount increases greatly, environmental factor more and more is subject to people's attention in addition, the automobile that had occurred many new forms of energy forms in the last few years, LNG(LNG liquefied natural gas Liquefied Natural Gas wherein) and CNG(CNG compressed natural gas Compressed Natural Gas) also obtained development fast as the automobile of power source.
In the use of automobile, may be subjected to the influence of various factors such as vehicle condition itself, environmental condition, accident collision and fuel leakage, spontaneous combustion even blast take place, light then cause the loss of property, heavy then threat to life.
LNG, CNG fuel and conventional gasoline, diesel oil Type of Danger are different, can't can stablize sustained combustion until running out of gas as the gasoline, diesel class.LNG; very easily diffusion after the CNG motor vehicle fuel leaks; and assemble at local space; if the combustion gas of assembling is in and runs into electric spark or naked light in the blast limit then easily deflagration accident having takes place and cause serious consequence, so the fire extinguisher of traditional sense or vehicle-mounted automatic fire extinguishing system are very little to LNG, the protective effect of CNG automotive safety.In addition, if LNG, CNG automobile leak because of the bump accident, a large amount of leakage combustion gas will soon form the combustible gas cloud cluster in the cabin, accidental ignition then can form blast, and common hand-held fire extinguisher or conventional vehicle-mounted automatic fire extinguishing system then can't reach datonation-inhibition, extinguishment requirement.Therefore, must be datonation-inhibition based on prevention in advance, inerting for the fire of LNG, CNG automobile.
At present, the method of using always at automobile fire is to force to be equipped with on the automobile a kind of small size fire extinguisher of automobile specified, and this fire extinguisher volume is less, though easy to carry, but actual extinguishing ability is not remarkable, and yet there are no report at the vehicle-mounted automatic fire extinguishing system of LNG, CNG automobile.Therefore, at vehicle-mounted LNG, CNG fuel automobile, develop collection gas leakage early warning and inerting, datonation-inhibition, the LNG of fire-extinguishing function concurrently, CNG automobile fireproof and explosion suppression system is very urgent, has become the problem that those skilled in the art research and develop.
Summary of the invention
Purpose of the present invention is exactly for overcoming the deficiencies in the prior art, at existing LNG, the fire prevention of CNG automobile, explosion-proof demand, provide a kind of specially at LNG, the fireproof and explosion suppression system and device of CNG automobile, LNG by development, CNG automobile fireproof and explosion suppression system realizes real-time monitoring leakage methane concentration and initial stage flash burn flame, when surpassing default definite value, sends methane concentration early warning, automatically (gas extinguishing agent can adopt heptafluoro-propane to open gas inhibition system when enging cabin local space methane concentration surpasses finite concentration (volumetric concentration 3%) or finds flash burn flame, carbon dioxide and other inert gases etc.), realize LNG, the prevention of CNG automobile fire and inhibition.Remedy the blank of existing LNG, the fire prevention of CNG automobile, explosion-protection equipment.
The present invention realizes by such technical scheme: LNG, CNG automobile fireproof and explosion suppression system, comprise the gas extinguishing agent system, signals collecting and warning system and control system, it is characterized in that: described gas extinguishing agent system comprises the gas extinguishing agent storage bottle, the foamite container valve is installed in the bottleneck of gas extinguishing agent storage bottle, connect relief valve on extinguishing chemical conveyance conduit and the pipeline from foamite container valve outlet port one end, many arms in parallel on the extinguishing chemical conveyance conduit, many arm connects an electrodynamic type selector valve and a nozzle respectively successively, the end of every arm extends to the protection zone, automobile cabin of a correspondence, and the nozzle of every tube end is fixed on corresponding engine protection zone;
Described signals collecting and warning system comprise flame detector, high accuracy methane concentration detector, alarm controller, signal feedback device, audible-visual annunciator and attention display; Each protection zone is installed a flame detector and a high accuracy methane concentration detector respectively; The flame detector, the high accuracy methane concentration detector that are installed in different protection zones connect alarm controller respectively;
Described control system comprises agent application controller, urgent start and stop button, starting drive, and the agent application controller comprises startup control end, signal input part; Signal input part is connected with alarm controller, starts control end and is connected with starting drive;
LNG, CNG automobile fireproof and explosion suppression system are gathered fire signal, methane concentration signal respectively and are sent to alarm controller by flame detector, high accuracy methane concentration detector, alarm controller transmits alarm signal to the agent application controller, by the agent application controller fire signal, the methane concentration signal gathered are screened judgement, when the numerical value of signal data overshoot, the control starting drive is opened, and carries out sound and light alarm by audible-visual annunciator and attention display simultaneously;
The multichannel control end of starting drive respectively with every arm on the corresponding connection of input of electrodynamic type selector valve, the output of the electrodynamic type selector valve on every arm is connected with the control end of container value respectively, interlock, the feedback signal output of electrodynamic type selector valve is connected with signal feedback device, by controlling electrodynamic type selector valve on the corresponding arm, the real-time monitoring leakage methane concentration of system and initial stage flash burn flame, when methane concentration surpasses default definite value, send early warning, when enging cabin local space methane concentration surpass volumetric concentration 3% or open gas automatically when finding flash burn flame and suppress system; Automatically realize the fireproof and explosion suppression to a plurality of engines protection zone;
System establishes 4 urgent start and stop buttons altogether, is used for agent application controller emergency start or stops single or whole agent application actions;
The agent application controller adopts the control of PLC system, by PLC default control program; High accuracy methane concentration detector adopts high accuracy methane gas sensing element, has explosion-proof ability, and transmits voltage or current signal to the PLC system;
Flame detector adopts the flame-proof type flame detection device, based on ultraviolet and infrared spectrum analysis principle, can respond leaking methane gas scintillation and combustion flame, and transmit voltage or current signal to the PLC system.
System spurt the action and logic comprise: the methane concentration of being gathered the enging cabin local space by high accuracy methane concentration detector in real time, its numerical value is presented on the attention display constantly, when numerical value reach volumetric concentration 1.5% the time send prompting sound, if methane concentration continue to rise, when reach volumetric concentration 3% the time, fireproof and explosion suppression system acting then, in a single day the fireproof and explosion suppression system opens, can't stop automatically, need manually to judge, and press urgent start and stop button and could stop.
Beneficial effect of the present invention: the present invention can be automatically to LNG, the CNG motor vehicle fuel leaks and fire carries out early warning and early stage inerting suppresses, system is by real-time monitoring leakage methane concentration and initial stage flash burn flame, (methane volumetric concentration 1%) sends early warning when methane concentration surpasses default definite value, automatically (gas extinguishing agent can adopt heptafluoro-propane to open gas inhibition system when sending out the enclosure space methane concentration above concentration (methane volumetric concentration 3%) or finding flash burn flame, carbon dioxide and other inert gases etc.), realization is to LNG, the prevention of CNG automobile fire and inhibition remedy existing LNG, the fire prevention of CNG automobile, the blank of explosion-protection equipment.
Description of drawings
Fig. 1, be LNG, CNG automobile fireproof and explosion suppression system architecture schematic diagram;
Fig. 2, be LNG, CNG automobile fireproof and explosion suppression system works principle flow chart;
Fig. 3, be that LNG, CNG automobile fireproof and explosion suppression system logic judge and schematic diagram.
Among the figure: 1. foamite container valve, 2. gas extinguishing agent storage bottle, 3. agent application controller, 4. urgent start and stop button, 5. audible-visual annunciator, 6. attention display, 7. alarm controller, 13. extinguishing chemical conveyance conduits, 14. starting drive, 15. extinguishing chemical pipe check valves, 16. relief valves;
8-1. first flame detector, 8-2. second flame detector, 8-3. the 3rd flame detector; 9-1. the first high accuracy methane concentration detector, the 9-2. second high accuracy methane concentration detector, 9-3. the 3rd high accuracy methane concentration detector; 10-1. first nozzle, 10-2. second nozzle, 10-3. the 3rd nozzle; 11-1. the first electrodynamic type selector valve, the 11-2. second electrodynamic type selector valve, 11-3. the 3rd electrodynamic type selector valve; 12-1. first signal feedback device, 12-2. secondary signal feedback device, 12-3. the 3rd signal feedback device.
The specific embodiment
For a more clear understanding of the present invention, describe the present invention in conjunction with the accompanying drawings and embodiments in detail:
In the present embodiment, the gas extinguishing agent system comprises gas extinguishing agent storage bottle 2, foamite container valve 1 is installed in the bottleneck of gas extinguishing agent storage bottle 2, connect extinguishing chemical conveyance conduit 13 from foamite container valve 1 outlet one end, extinguishing chemical conveyance conduit 13 is provided with relief valve 16,3 arms in parallel behind the valve, article 3, arm connects an electrodynamic type selector valve and a nozzle respectively successively, the protection zone, automobile cabin that extends to a correspondence of every arm, the nozzle of every tube end is fixed on corresponding protection zone, automobile cabin;
Article one, arm comprises the first electrodynamic type selector valve 11-1 and the first nozzle 10-1; The first electrodynamic type selector valve 11-1 feedback signal output is connected with signal feedback device 12-1;
The second arm comprises the second electrodynamic type selector valve 11-2 and the second nozzle 10-2; The second electrodynamic type selector valve 11-2 feedback signal output is connected with signal feedback device 12-2;
Article three, arm comprises the 3rd electrodynamic type selector valve 11-3 and the 3rd nozzle 10-3; The 3rd electrodynamic type selector valve 11-3 feedback signal output is connected with signal feedback device 12-3.
Described signals collecting and warning system comprise flame detector, high accuracy methane concentration detector, alarm controller 7, signal feedback device, audible-visual annunciator 5 and attention display 6; Each protection zone is installed a flame detector and a high accuracy methane concentration detector respectively; The flame detector, the high accuracy methane concentration detector that are installed in different protection zones connect alarm controller 7 respectively;
Described control system comprises agent application controller 3, urgent start and stop button 4, starting drive 14, and agent application controller 3 comprises startup control end, signal input part; Signal input part is connected with alarm controller 7, starts control end and is connected with starting drive 14;
Gather fire signal, methane concentration signal respectively and send alarm controller 7 to by flame detector, high accuracy methane concentration detector, alarm controller 7 transmits alarm signal to agent application controller 3, fire signal, methane concentration signal by 3 pairs of collections of agent application controller are screened judgement, when the lower limit of signal data overshoot, control starting drive 14 is opened, and carries out sound and light alarm by audible-visual annunciator 5 and attention display 6 simultaneously;
The multichannel control end of starting drive 14 respectively with every arm on the corresponding connection of electrodynamic type selector valve input; the interlock output of the electrodynamic type selector valve on every arm is connected with the control end of container value respectively; the feedback signal output of electrodynamic type selector valve is connected with signal feedback device; by controlling electrodynamic type selector valve on the corresponding arm, realize the fireproof and explosion suppression to protection zone, 3 automobile cabins.
Urgent start and stop button 4 connects the governor circuit of agent application controller 3, realizes spurting of Artificial Control extinguishing chemical or stops action by urgent start and stop button 4.
LNG, CNG automobile fire prevention inhibition system can monitor methane concentration and flare up fire and rapid alarm indication in real time and activate gas and suppress system.Its concrete operation logic and flow process are as follows.
The first high accuracy methane concentration detector 9-1 is installed near the engine;
LNG or CNG storage tank are installed the second high accuracy methane concentration detector 9-2 near the closed area to the engine connecting line;
The 3rd high accuracy methane concentration detector 9-3 is installed near the storage tank outlet valve of LNG automobile vaporizer/CNG automobile and partial L NG automobile relative closure;
High accuracy methane concentration detector detects the methane concentration of ad-hoc location in real time, when methane concentration surpasses preset value, alarm controller is reported to the police according to signal indication audible-visual annunciator, and will exceed standard position and methane concentration value are presented on the attention display, but manual intervention this moment selects cancellation to report to the police or unlatching gas suppresses system.
If methane concentration continues to raise, when surpassing concentration 3% (volumetric concentration 3%), Fire extinguisher 3 sends the electrodynamic type selector valve that index signal starting drive 14 starts the relevant position, linkage is opened foamite container valve 1, then gas extinguishing agent is sprayed by nozzle through extinguishing chemical carrier pipe 13, thereby reach the purpose that prevents fire, when the methane volumetric concentration is lower than concentration 3%, Fire extinguisher 3 indication starting drives cut out electrodynamic type selector valve and foamite container valve 1, and methane concentration all is presented on the attention display 6 in real time.
The first flame detector 8-1 is installed near the engine;
LNG or CNG storage tank are installed the second flame detector 8-2 near the closed area to the engine connecting line;
The 3rd flame detector 8-3 is installed near the storage tank outlet valve of LNG automobile vaporizer/CNG automobile and partial L NG automobile relative closure.
Flame detector is the flame detection signal constantly, when flame takes place, alarm controller 7 directly triggers acoustooptic alarm system 5, and with flare up fire alarm probe position display on attention display 6, Fire extinguisher 3 sends index signal, starting drive 14 starts the electrodynamic type selector valve linkage of relevant position and opens foamite container valve 1, then gas extinguishing agent is sprayed by nozzle through extinguishing chemical carrier pipe 13, thereby reach the purpose that stamps out a fire, when flame disappeared, Fire extinguisher 3 indication starting drives cut out electrodynamic type selector valve and foamite container valve 1.
System requirements whole process is not cut off the power supply, and power supply adopts the battery form, charging automatically in motor racing.
According to the above description, can realize the solution of the present invention in conjunction with art technology.
Claims (4)
1.LNG, CNG automobile fireproof and explosion suppression system, comprise the gas extinguishing agent system, signals collecting and warning system and control system, it is characterized in that: described gas extinguishing agent system comprises gas extinguishing agent storage bottle (2), foamite container valve (1) is installed in the bottleneck of gas extinguishing agent storage bottle (2), connect relief valve (16) on extinguishing chemical conveyance conduit (13) and the pipeline from foamite container valve (1) outlet one end, extinguishing chemical conveyance conduit (13) is gone up many arms in parallel, many arm connects an electrodynamic type selector valve and a nozzle respectively successively, the end of every arm extends to the protection zone, automobile cabin of a correspondence, and the nozzle of every tube end is fixed on corresponding engine protection zone;
Described signals collecting and warning system comprise flame detector, high accuracy methane concentration detector, alarm controller (7), signal feedback device, audible-visual annunciator (5) and attention display (6); Each protection zone is installed a flame detector and a high accuracy methane concentration detector respectively; The flame detector, the high accuracy methane concentration detector that are installed in different protection zones connect alarm controller (7) respectively;
Described control system comprises agent application controller (3), urgent start and stop button (4), starting drive (14), and agent application controller (3) comprises startup control end, signal input part; Signal input part is connected with alarm controller (7), starts control end and is connected with starting drive (14);
LNG, CNG automobile fireproof and explosion suppression system are gathered fire signal, methane concentration signal respectively and are sent to alarm controller (7) by flame detector, high accuracy methane concentration detector, alarm controller (7) transmits alarm signal to agent application controller (3), by agent application controller (3) fire signal, the methane concentration signal gathered are screened judgement, when the numerical value of signal data overshoot, control starting drive (14) is opened, and carries out sound and light alarm by audible-visual annunciator (5) and attention display (6) simultaneously;
The multichannel control end of starting drive (14) respectively with every arm on the corresponding connection of input of electrodynamic type selector valve, the output of the electrodynamic type selector valve on every arm is connected with the control end of container value respectively, interlock, the feedback signal output of electrodynamic type selector valve is connected with signal feedback device, by controlling electrodynamic type selector valve on the corresponding arm, the real-time monitoring leakage methane concentration of system and initial stage flash burn flame, when methane concentration surpasses default definite value, send early warning, when enging cabin local space methane concentration surpass volumetric concentration 3% or open gas automatically when finding flash burn flame and suppress system; Automatically realize the fireproof and explosion suppression to a plurality of engines protection zone;
System establishes 4 urgent start and stop buttons (4) altogether, is used for agent application controller (3) emergency start or stops single or whole agent application actions;
Agent application controller (3) adopts the control of PLC system, by PLC default control program; High accuracy methane concentration detector adopts high accuracy methane gas sensing element, has explosion-proof ability, and transmits voltage or current signal to the PLC system;
Flame detector adopts the flame-proof type flame detection device, based on ultraviolet and infrared spectrum analysis principle, can respond leaking methane gas scintillation and combustion flame, and transmit voltage or current signal to the PLC system.
2. LNG according to claim 1, CNG automobile fireproof and explosion suppression system, it is characterized in that, system spurt the action and logic comprise: the methane concentration of being gathered the enging cabin local space by high accuracy methane concentration detector in real time, its numerical value is presented on the attention display (6) constantly, when numerical value reach volumetric concentration 1.5% the time send prompting sound, if methane concentration continues to rise, when reach volumetric concentration 3% the time, fireproof and explosion suppression system acting then, in a single day the fireproof and explosion suppression system opens, can't stop automatically, need manually to judge, and press urgent start and stop button (4) and could stop.
3. LNG, CNG automobile fireproof and explosion suppression system according to claim 1, it is characterized in that: urgent start and stop button (4) connects the governor circuit of agent application controller (3), realizes manually control by urgent start and stop button (4).
4. LNG, CNG automobile fireproof and explosion suppression system according to claim 1, it is characterized in that: extinguishing chemical conveyance conduit (13) is gone up and is connected a relief valve (16), 3 arms in parallel behind the valve, 3 arms connect an electrodynamic type selector valve and a nozzle respectively successively;
Article one, arm comprises the first electrodynamic type selector valve (11-1) and first nozzle (10-1); First electrodynamic type selector valve (11-1) the feedback signal output is connected with signal feedback device (12-1);
The second arm comprises the second electrodynamic type selector valve (11-2) and second nozzle (10-2); Second electrodynamic type selector valve (11-2) the feedback signal output is connected with signal feedback device (12-2);
Article three, arm comprises the 3rd electrodynamic type selector valve (11-3) and the 3rd nozzle (10-3); The 3rd electrodynamic type selector valve (11-3) feedback signal output is connected with signal feedback device (12-3).
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Cited By (8)
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| CN104083837A (en) * | 2014-07-25 | 2014-10-08 | 杨硕 | Automatic fire extinguishing device for vehicles |
| CN104606810A (en) * | 2015-01-15 | 2015-05-13 | 李丛林 | CO2 fire extinguishing system for bus |
| CN104857651A (en) * | 2015-05-29 | 2015-08-26 | 西安北方光电科技防务有限公司 | Automatic firefighting explosion-prevention system and method for bus |
| CN107544422A (en) * | 2017-10-20 | 2018-01-05 | 成都华气厚普机电设备股份有限公司 | A kind of civilian gasification sledge automatic control system of LNG Dewar bottles and control method |
| CN109609361A (en) * | 2018-12-11 | 2019-04-12 | 惠州市兴牧环保科技股份有限公司 | A kind of biogas pressurized protected apparatus |
| CN111912876A (en) * | 2020-06-15 | 2020-11-10 | 西安科技大学 | Explosion suppression medium selection method based on coupling relation of explosion pressure and free radicals |
| CN111928908A (en) * | 2020-10-14 | 2020-11-13 | 华南理工大学 | Method and system for monitoring working condition of hydrogen energy automobile in real time |
| CN113198129A (en) * | 2021-05-19 | 2021-08-03 | 西安理工大学 | Compressed air foam extinguishing device intelligently adapting to multiple fire scenes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104083837A (en) * | 2014-07-25 | 2014-10-08 | 杨硕 | Automatic fire extinguishing device for vehicles |
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| CN111928908A (en) * | 2020-10-14 | 2020-11-13 | 华南理工大学 | Method and system for monitoring working condition of hydrogen energy automobile in real time |
| CN111928908B (en) * | 2020-10-14 | 2021-01-01 | 华南理工大学 | Method and system for monitoring working condition of hydrogen energy automobile in real time |
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| CN113198129B (en) * | 2021-05-19 | 2022-06-03 | 西安理工大学 | Compressed air foam extinguishing device intelligently adapting to multiple fire scenes |
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| CN103272350B (en) | 2015-04-22 |
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