CN208530861U - A kind of fuel-tank inert gas device for combining plasma and photocatalysis technology - Google Patents
A kind of fuel-tank inert gas device for combining plasma and photocatalysis technology Download PDFInfo
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- CN208530861U CN208530861U CN201820988722.6U CN201820988722U CN208530861U CN 208530861 U CN208530861 U CN 208530861U CN 201820988722 U CN201820988722 U CN 201820988722U CN 208530861 U CN208530861 U CN 208530861U
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- gas
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- fuel tank
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Abstract
The utility model discloses a kind of fuel-tank inert gas devices for combining plasma and photocatalysis technology, it includes in the reactor of plasma module and photocatalysis module that fuel tank upper gaseous phase space fuel vapor and air mixture, which are passed through, and reaction gas first carries out preliminary exposition in plasma module；Then under conditions of ultraviolet light, hydrocarbon is adsorbed in catalyst surface, in conjunction with free electron or hole, redox reaction occurs, hydrocarbon is further divided into CO2、H2O.After reaction after gas dry, it is rich in nitrogen and CO2Gas flow into fuel tank carry out inerting, achieve the purpose that fuel tank is fire-proof and explosion-proof.The utility model has many advantages, such as that operating cost is low, overall structure is simple, removal efficiency is high, can operate under normal operation.
Description
Technical field
The utility model belongs to air line technical field, is related to a kind of aircraft fuel-tank inert gas system, in particular to
A kind of fuel-tank inert gas device for combining plasma and photocatalysis technology.
Background technique
The safety problem of modern aircraft is all the time by social extensive concern, and fuel system burning, explosion are to draw
One of the main reason for playing aviation accident.There is data to suggest that in Vietnam War, United States Air Force by ground fire attack and
Thousands of airplanes are lost, wherein since fuel tanker explosion on fire causes the ratio of fatal crass to be as high as 50%.Cabin is ground safely
Technology group (cabin safety research technical group, GSRTG) is studied carefully to 1966 to 2009 whole world
3726 civil aircraft accident statistics are the results show that share 370 accidents related with fuel tank combustion explosion.It can be seen that, it is necessary to it uses
Effective measures prevent the aircraft fuel tank from firing.
Aircraft fuel tank upper space is full of flammable gas mixture, and inflammable, explosive feature seriously threatens aircraft
Safety, it is necessary to adopt an effective measure to reduce the probability of its combustion, outburst life, and reduce its extent of injury.System is protected in fuel tank
In, fuel tank explosion on fire can be prevented by reducing fuel tank upper gaseous phase space oxygen concentration, guarantee passenger and aircraft safety.Reduce fuel oil
Case oxygen concentration can be used the gases such as inert gas such as nitrogen and carbon dioxide and carry out fuel tank inerting, and being reduced to its oxygen content can
Fire the limit or less.
Common aircraft fuel tank oxygen concentration control technology mainly have liquid nitrogen inerting technology, 1301 inerting technology of Halon,
Sieve technology, membrane separation technique etc..Wherein hollow-fibre membrane produces the airborne nitrogen inerting technology (On-Board processed of nitrogen-rich gas
Inert Gas Generator System, OBIGGS) it is that most economical, practical fuel tanker fires suppression technology.But
OBIGGS technology is there are still many problems, as seperation film low efficiency leads to that aircraft panelty is big, seperation film entrance demand pressure
Height leads to not to be available (such as helicopter) on many types, tiny film wire and infiltration aperture gradually block and gas source in ozone
Cause causes fuel-steam to leak when serious film properties decaying, nitrogen-rich gas filling fuel tank pollutes environment etc..
In recent years, non-thermal plasma trap handle exhaust gas and in terms of quickly grow, it is lazy to may be used on fuel tank
In change.Mainly caused in the form of gas discharge in its purification process, it is considered that, in plasma system, strong electrical field makes
Electronics accelerates capacitation.Then high energy electron and O2、H2The gas molecule collisions such as O, and it is free to generate O and OH isoreactivity
Base.In the presence of aerobic in system, OH can be rapidly converted to H2O.In this course, hydrocarbonization contained in gas
Closing object can also collide with high energy electron, and plasma physics and the chemistry that a series of complex such as ionization, dissociation or excitation occur are anti-
It answers, is converted into CO2、H2O.But plasma technique has the shortcomings that oxidation is incomplete, capacity usage ratio is low and application conditions are high.
Photocatalytic oxidation is because of its high efficiency, energy consumption is small, the advantages that being not in secondary pollution, in processing volatility exhaust gas
Aspect graduallys mature.The utility model joins together plasma technique and photocatalysis technology, is applied to aircraft fuel tank
Inerting system overcomes the deficiency of the two, with operating cost is low, overall structure is simple, removal efficiency is high, can be in normal condition
The advantages that lower operation.
Utility model content
The utility model is for hollow fiber membrane nitrogen low efficiency existing in the prior art, expensive, pollution environment
The disadvantages of, a kind of fuel-tank inert gas device for combining plasma and photocatalysis technology is provided, by fuel tank upper gaseous phase space
It includes in the reactor of plasma module and photocatalysis module that fuel vapor and air mixture, which are passed into, and reaction gas is first
Preliminary exposition is carried out in plasma module；Then under conditions of ultraviolet light, hydrocarbon is adsorbed in catalyst table
In conjunction with free electron or hole redox reaction occurs for face, and hydrocarbon is further divided into CO2、H2O.Reaction
Afterwards after gas dry, it is rich in nitrogen and CO2Gas flow into fuel tank carry out inerting, achieve the purpose that fuel tank is fire-proof and explosion-proof.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of fuel-tank inert gas device for combining plasma and photocatalysis technology, which is characterized in that include fuel tank, first
Fire arrester, the first blower, filter, drier, reactor, the second blower, cooler, separator, temperature sensor, first
Electric control valve, check-valves, the second fire arrester, oxygen concentration sensor, third blower, the second electric control valve, third electric adjustable
Save valve and automatic controller；
The fuel tank includes gas vent and gas access, and the automatic controller includes that current input terminal and electric current export
End；
The gas vent of the fuel tank, the first fire arrester, the first blower entrance successively pipeline be connected；
First blower exports the inlet duct phase with the outlet of second electric control valve, filter respectively
Even；
The outlet of the filter, drier, reactor, the second blower, the hot-side channel of cooler, separator, temperature
Spend sensor, the first electric control valve, check-valves, the second fire arrester, fuel tank gas access successively pipeline be connected；Wherein, institute
Reactor is stated for consume the oxygen entered in its interior gas into be decomposed into CO into hydrocarbon in the gas in it2
And H2It is discharged after O；
The entrance of the third blower connects external ram-air, outlet respectively with the entrance of second electric control valve,
The entrance of third electric control valve connects；
The third motorized adjustment valve outlet is connected with the inlet duct of the cooler cold side channel；
The outlet of the cooler cold side channel is for draining into gas in it outside machine；
The probe of the oxygen concentration sensor protrudes into the fuel tank, for measuring the oxygen concentration of gas in the fuel tank,
And pass it to the automatic controller；
The current input terminal of the automatic controller is electrically connected with the temperature sensor, oxygen concentration sensor respectively,
Current output terminal respectively with first blower, reactor, the second blower, the first electric control valve, third blower, second electronic
Regulating valve, third electric control valve are electrically connected.
Fuel-tank inert gas device as a kind of joint plasma of the utility model and photocatalysis technology is further excellent
Change scheme, the reactor include shell, plasma cell, light unit, catalyst elements and four fan device；
Plasma cell, light unit, catalyst elements, four fan device are included by the shell；
The plasma cell is used to carry out the gas entered in it preliminary exposition, and consumption enters the oxygen in its interior gas
A part of hydrocarbon in the gas entered in it is decomposed into CO by gas2And H2O；
The light unit is irradiated to catalyst elements for emitting ultraviolet light；
The catalyst elements are used under conditions of ultraviolet light, and consumption enters the oxygen in its interior gas, will be into
The hydrocarbon for entering the gas surplus in it is further broken into CO2 and H2O；
The four fan device is placed on the inner wall of the shell, for flow-disturbing, makes hydrocarbon decomposition more abundant.
The beneficial effects of the utility model are as follows:
It includes plasma mode that fuel tank upper gaseous phase space fuel vapor and air mixture are passed through by the utility model
In block and the reactor of photocatalysis module, fuel vapor is decomposed into carbon dioxide and water and consumes oxygen；Rich nitrogen after drying
Gas is passed through fuel tank and is rinsed inerting；System is with operating cost is low, overall structure is simple, removal efficiency is high, can be normal
Under the conditions of the advantages that operating.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of reactor in the utility model.
In figure, 1- fuel tank, the first fire arrester of 2-, the first blower of 3-, 4- filter, 5- drier, 6- reactor, 7- second
Blower, 8- cooler, 9- separator, 10- temperature sensor, the first electric control valve of 11-, 12- check-valves, 13- second hinder
Firearm, 14- oxygen concentration sensor, 15- third blower, the second electric control valve of 16-, 17- third electric control valve, 18- are automatic
Controller, 19- shell, 20- plasma cell, 21- light unit, 22- catalyst elements, 23- four fan device.
Specific embodiment
The utility model is further described below with reference to embodiment.As described below is only that the utility model a part is real
Apply example, not all embodiments.Based on the utility model embodiment, those of ordinary skill in the art are not making creative work
Under the premise of every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the utility model discloses the fuel-tank inert gas dresses of a kind of joint plasma and photocatalysis technology
It sets, which is characterized in that include fuel tank 1, the first fire arrester 2, the first blower 3, filter 4, drier 5, reactor 6, the second wind
Machine 7, cooler 8, separator 9, temperature sensor 10, the first electric control valve 11, check-valves 12, the second fire arrester 13, oxygen
Concentration sensor 14, third blower 15, the second electric control valve 16, third electric control valve 17 and automatic controller 18；
The fuel tank 1 includes gas vent and gas access, and the automatic controller 18 includes current input terminal and electric current
Output end；
The gas vent of the fuel tank 1, the first fire arrester 2, the first blower 3 entrance successively pipeline be connected；
First blower 3 exports the inlet duct with the outlet of second electric control valve 16, filter 4 respectively
It is connected；
Outlet, drier 5, reactor 6, the second blower 7, the hot-side channel of cooler 8, the water separation of the filter 4
Device 9, temperature sensor 10, the first electric control valve 11, check-valves 12, the second fire arrester 13, fuel tank 1 gas access successively manage
Road is connected；Wherein, it is hydrocarbon in the gas in it into enter to be used to consume the oxygen entered in its interior gas for the reactor 6
Compound is decomposed into CO2And H2It is discharged after O；
The entrance of the third blower 15 connects external ram-air, and outlet enters with second electric control valve 16 respectively
The entrance connection of mouth, third electric control valve 17；
The outlet of third electric control valve 17 is connected with the inlet duct of 8 cold side channel of cooler；
The outlet of 8 cold side channel of cooler is for draining into gas in it outside machine；
The probe of the oxygen concentration sensor 14 protrudes into the fuel tank 1, and the oxygen for measuring gas in the fuel tank 1 is dense
Degree, and pass it to the automatic controller 18；
The current input terminal of the automatic controller 18 is electrical with the temperature sensor 10, oxygen concentration sensor 14 respectively
Be connected, current output terminal respectively with first blower 3, reactor 6, the second blower 7, the first electric control valve 11, third wind
Machine 15, the second electric control valve 16, third electric control valve 17 are electrically connected.
As shown in Fig. 2, the reactor 6 includes shell 19, plasma cell 20, light unit 21, catalyst elements 22
With four fan device 23；
Plasma cell 20, light unit 21, catalyst elements 22, four fan device 23 are included by the shell 19；
The plasma cell 20 is used to carry out the gas entered in it preliminary exposition, and consumption enters in its interior gas
A part of hydrocarbon in the gas entered in it is decomposed into CO by oxygen2And H2O；
The light unit 21 is irradiated to catalyst elements 22 for emitting ultraviolet light；
The catalyst elements 22 are used under conditions of ultraviolet light, and consumption enters the oxygen in its interior gas, will
The hydrocarbon of gas surplus in into it is further broken into CO2 and H2O；
The four fan device 23 is placed on the inner wall of the shell 19, for flow-disturbing, hydrocarbon is decomposed more
Sufficiently.
The course of work of the utility model is as follows:
1) catalytic decomposition process
The mixed gas of 1 upper gaseous phase space fuel vapor of fuel tank and air under the swabbing action of first blower 3,
After the first fire arrester 2, the first blower 3, mixed with 16 ram-air of the second electric control valve is flowed through, to adjust oxygen and combustion
Oil vapour is in suitable ratio；Since relative humidity is affected to photocatalytic degradation, mixed gas is filtered in the filter 4
After falling impurity, into being dried in drier 5；Dry gas enters in reactor 6 by catalytic degradation, hydrocarbon quilt
Oxygen is decomposed and consumed, CO is generated2And H2O；
As shown in Fig. 2, the reactor 6 mainly includes shell 19, plasma cell 20, light unit 21, catalyst list
First 22, four fan device 23；Reaction gas first carries out preliminary exposition in plasma module；It is described subsequently into photocatalysis part
Catalysed partial includes light unit 21 and catalyst elements 22；Under conditions of ultraviolet light, hydrocarbon, which is adsorbed in, is urged
In conjunction with free electron or hole redox reaction occurs for agent surface, and hydrocarbon is further divided into CO2、
H2O；
The ram-air that the third blower 15 exports is divided into two strands, one plume after the second electric control valve 16, with
Gas mixing from fuel tank participates in catalysis reaction；Its secondary air is cold into the cooler after third electric control valve 17
Wing passage cools down gas after reaction, thereafter lets out outside machine；
2) inerting process
The nitrogen-rich gas that the reactor 6 exports flows through cooler 8 and is rushed under the swabbing action of second blower 7
Press air cooling；And then condensed water is discharged in separator 9；Followed by temperature sensor 10, the first electric control valve
11, it after check-valves 12, the second fire arrester 13, flows into the fuel tank 1 and is rinsed inerting；
3) data collection and control process
The oxygen concentration sensor 14 detects the 1 upper gaseous phase space oxygen concentration of fuel tank by feeler lever and transmits signal
To the automatic controller 18；When oxygen concentration is greater than given value, described in the output of the automatic controller 18 control signal communication
First blower 3, reactor 6, the second blower 7, the first electric control valve 11, third blower 15, the second electric control valve 16, third
Electric control valve 17, system starts；When oxygen concentration is less than given value, system stalls；
The temperature sensor 10 measures dry nitrogen-rich gas temperature, and transfers signals to the automatic controller
18；When temperature is greater than given value, the first electric control valve 11 described in the output of the automatic controller 18 control signal-off, with
It prevents high-temperature gas from entering fuel tank, guarantees fuel tank safety.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of fuel-tank inert gas device for combining plasma and photocatalysis technology, which is characterized in that include fuel tank (1), the
One fire arrester (2), the first blower (3), filter (4), drier (5), reactor (6), the second blower (7), cooler (8),
Separator (9), temperature sensor (10), the first electric control valve (11), check-valves (12), the second fire arrester (13), oxygen are dense
Spend sensor (14), third blower (15), the second electric control valve (16), third electric control valve (17) and automatic controller
(18)；
The fuel tank (1) includes gas vent and gas access, and the automatic controller (18) includes current input terminal and electric current
Output end；
The gas vent of the fuel tank (1), the first fire arrester (2), the first blower (3) entrance successively pipeline is connected；
The outlet of first blower (3) inlet tube with the outlet of second electric control valve (16), filter (4) respectively
Road is connected；
The outlet of the filter (4), drier (5), reactor (6), the second blower (7), cooler (8) hot-side channel,
Separator (9), temperature sensor (10), the first electric control valve (11), check-valves (12), the second fire arrester (13), fuel tank
(1) successively pipeline is connected for gas access；Wherein, the reactor (6) is used to consume into the oxygen in its interior gas into making
It obtains hydrocarbon in the gas entered in it and is decomposed into CO2And H2It is discharged after O；
The entrance of the third blower (15) connects external ram-air, and outlet enters with the second electric control valve (16) respectively
The entrance connection of mouth, third electric control valve (17)；
Third electric control valve (17) outlet is connected with the inlet duct of the cooler (8) cold side channel；
The outlet of cooler (8) cold side channel is for draining into gas in it outside machine；
The probe of the oxygen concentration sensor (14) protrudes into the fuel tank (1), for measuring the oxygen of the fuel tank (1) interior gas
Concentration, and pass it to the automatic controller (18)；
The current input terminal of the automatic controller (18) is electric with the temperature sensor (10), oxygen concentration sensor (14) respectively
Gas phase connect, current output terminal respectively with first blower (3), reactor (6), the second blower (7), the first electric control valve
(11), third blower (15), the second electric control valve (16), third electric control valve (17) are electrically connected.
2. the fuel-tank inert gas device of joint plasma and photocatalysis technology according to claim 1, which is characterized in that
The reactor (6) includes shell (19), plasma cell (20), light unit (21), catalyst elements (22) and the 4th wind
Machine (23)；
Plasma cell (20), light unit (21), catalyst elements (22), four fan device (23) include by the shell (19)
Inside；
The plasma cell (20) is used to carry out the gas entered in it preliminary exposition, and consumption enters the oxygen in its interior gas
A part of hydrocarbon in the gas entered in it is decomposed into CO by gas2And H2O；
The light unit (21) is irradiated to catalyst elements (22) for emitting ultraviolet light；
The catalyst elements (22) are used under conditions of ultraviolet light, and consumption enters the oxygen in its interior gas, will be into
The hydrocarbon for entering the gas surplus in it is further broken into CO2And H2O；
The four fan device (23) is placed on the inner wall of the shell (19), for flow-disturbing, hydrocarbon is decomposed more
Sufficiently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820988722.6U CN208530861U (en) | 2018-06-25 | 2018-06-25 | A kind of fuel-tank inert gas device for combining plasma and photocatalysis technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820988722.6U CN208530861U (en) | 2018-06-25 | 2018-06-25 | A kind of fuel-tank inert gas device for combining plasma and photocatalysis technology |
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| Publication Number | Publication Date |
|---|---|
| CN208530861U true CN208530861U (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820988722.6U Withdrawn - After Issue CN208530861U (en) | 2018-06-25 | 2018-06-25 | A kind of fuel-tank inert gas device for combining plasma and photocatalysis technology |
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| Country | Link |
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| CN (1) | CN208530861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639361A (en) * | 2018-06-25 | 2018-10-12 | 南京航空航天大学 | A kind of fuel-tank inert gas device of joint plasma and photocatalysis technology |
-
2018
- 2018-06-25 CN CN201820988722.6U patent/CN208530861U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108639361A (en) * | 2018-06-25 | 2018-10-12 | 南京航空航天大学 | A kind of fuel-tank inert gas device of joint plasma and photocatalysis technology |
| CN108639361B (en) * | 2018-06-25 | 2023-09-26 | 南京航空航天大学 | Fuel tank inerting device combining plasma and photocatalysis technologies |
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| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190222 Effective date of abandoning: 20230926 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190222 Effective date of abandoning: 20230926 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |