CN108639361B - Fuel tank inerting device combining plasma and photocatalysis technologies - Google Patents
Fuel tank inerting device combining plasma and photocatalysis technologies Download PDFInfo
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- CN108639361B CN108639361B CN201810661364.2A CN201810661364A CN108639361B CN 108639361 B CN108639361 B CN 108639361B CN 201810661364 A CN201810661364 A CN 201810661364A CN 108639361 B CN108639361 B CN 108639361B
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- 239000002828 fuel tank Substances 0.000 title claims abstract description 29
- 238000005516 engineering process Methods 0.000 title claims abstract description 23
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 16
- 238000007146 photocatalysis Methods 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 65
- 239000003054 catalyst Substances 0.000 claims abstract description 24
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 20
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 20
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims description 41
- 239000001301 oxygen Substances 0.000 claims description 37
- 229910052760 oxygen Inorganic materials 0.000 claims description 37
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 239000000523 sample Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 21
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 8
- 238000004880 explosion Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000003574 free electron Substances 0.000 abstract description 3
- 239000012495 reaction gas Substances 0.000 abstract description 3
- 238000006479 redox reaction Methods 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000012510 hollow fiber Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RJCQBQGAPKAMLL-UHFFFAOYSA-N bromotrifluoromethane Chemical compound FC(F)(F)Br RJCQBQGAPKAMLL-UHFFFAOYSA-N 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 230000009295 sperm incapacitation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/32—Safety measures not otherwise provided for, e.g. preventing explosive conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/34—Conditioning fuel, e.g. heating
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a fuel tank inerting device combining plasma and photocatalysis technologies, which is characterized in that a gas phase space fuel vapor and air mixture at the upper part of a fuel tank is introduced into a reactor comprising a plasma module and a photocatalysis module, and reaction gas is primarily decomposed in the plasma module; then the hydrocarbon is adsorbed on the surface of the catalyst under the condition of ultraviolet irradiation, and is combined with free electrons or holes to undergo oxidation-reduction reaction, and the hydrocarbon is further decomposed into CO 2 、H 2 O. After the gas is dried after the reaction, the gas is rich in nitrogen and CO 2 The gas flows into the fuel tank for inerting, so that the purposes of fire prevention and explosion prevention of the fuel tank are achieved. The invention has the advantages of low operation cost, simple integral structure, high removal efficiency, capability of operating under normal conditions and the like.
Description
Technical Field
The invention belongs to the technical field of aviation systems, relates to an aircraft fuel tank inerting system, and particularly relates to a fuel tank inerting device combining plasma and photocatalysis technologies.
Background
The safety problem of modern aircraft has been widely focused on society, and fuel system combustion and explosion are one of the main reasons for aircraft accident. There are data showing that in vietnam war, the united states air force is attacked by ground fire and loses thousands of aircraft, with up to 50% of aircraft deaths due to aircraft tank fires. The cabin safety research technical group (cabin safety research technical group, GSRTG) showed that a total of 370 accidents are related to tank combustion explosions for 3726 civilian aircraft in the world from 1966 to 2009. It follows that effective measures must be taken to prevent the explosion of the aircraft fuel tanks.
The upper space of the fuel tank of the aircraft is filled with combustible oil-gas mixture, the inflammable and explosive characteristics of the fuel tank seriously threaten the safety of the aircraft, and effective measures must be taken to reduce the probability of burning and explosion and reduce the hazard degree of the fuel tank and the explosive mixture. In the oil tank protection system, the reduction of the oxygen concentration in the gas phase space at the upper part of the oil tank can prevent the oil tank from igniting and exploding, and ensure the safety of passengers and aircrafts. The reduction of the oxygen concentration of the fuel tank can be achieved by inerting the fuel tank with an inert gas such as nitrogen and carbon dioxide to reduce the oxygen content below the flammability limit.
Common aircraft fuel tank oxygen concentration control technologies mainly comprise a liquid nitrogen inerting technology, a Halon 1301 inerting technology, a molecular sieve technology, a membrane separation technology and the like. The On-board nitrogen inerting technology (On-Board Inert Gas Generator System, OBIGGS) for preparing the nitrogen-rich gas by the hollow fiber membrane is the most economical and practical aircraft fuel tank explosion suppression technology. However, the OBIGGS technology still has many problems, such as low efficiency of separation membranes, large compensation loss of aircraft, high pressure required by inlets of the separation membranes, incapacitation of using the separation membranes in many models (such as helicopters), gradual blockage of fine membrane wires and permeation apertures, serious attenuation of membrane performance caused by ozone in air sources, and leakage of fuel steam to pollute the environment when nitrogen-rich gas fills the oil tank.
In recent years, low-temperature plasma technology has been rapidly developed in the treatment of waste gas and garbage, and can be applied to fuel tank inerting. The purification process is mainly initiated in a gas discharge mode, and it is generally considered that in a plasma system, electrons are accelerated and energized by a strong electric field. Then high-energy electrons and O 2 、H 2 Gas molecules such as O collide with each other and generate active radicals such as O and OH. When oxygen exists in the system, OH is rapidly converted into H 2 O. In the process, hydrocarbon contained in the gas can collide with high-energy electrons to generate ionization, dissociation or excitation and other complex plasma physical and chemical reactions to be converted into CO 2 、H 2 O. However, the plasma technology has the defects of incomplete oxidation, low energy utilization rate, high application conditions and the like.
The photocatalytic oxidation method has the advantages of high benefit, low energy consumption, no secondary pollution and the like, and is mature in the aspect of treating volatile waste gas. The invention combines the plasma technology and the photocatalysis technology, is applied to an aircraft fuel tank inerting system, overcomes the defects of the plasma technology and the photocatalysis technology, and has the advantages of low operation cost, simple integral structure, high removal efficiency, capability of operating under normal conditions and the like.
Disclosure of Invention
Aiming at the defects of low nitrogen production efficiency, high price, environmental pollution and the like of a hollow fiber membrane in the prior art, the invention provides a fuel tank inerting device combining plasma and photocatalysis technology, which is characterized in that a gas-phase space fuel vapor and air mixture at the upper part of a fuel tank is introduced into a reactor containing a plasma module and a photocatalysis module, and reaction gas is primarily decomposed in the plasma module; then the hydrocarbon is adsorbed on the surface of the catalyst under the condition of ultraviolet irradiation, and is combined with free electrons or holes to undergo oxidation-reduction reaction, and the hydrocarbon is further decomposed into CO 2 、H 2 O. After the gas is dried after the reaction, the gas is rich in nitrogen and CO 2 The gas flows into the fuel tank for inerting, so that the purposes of fire prevention and explosion prevention of the fuel tank are achieved.
The invention adopts the following technical scheme for solving the technical problems:
the fuel tank inerting device combining the plasma and photocatalysis technologies is characterized by comprising a fuel tank, a first flame arrester, a first fan, a filter, a dryer, a reactor, a second fan, a cooler, a water separator, a temperature sensor, a first electric regulating valve, a check valve, a second flame arrester, an oxygen concentration sensor, a third fan, a second electric regulating valve, a third electric regulating valve and an automatic controller;
the oil tank comprises a gas outlet and a gas inlet, and the automatic controller comprises a current input end and a current output end;
the gas outlet of the oil tank, the first flame arrester and the inlet of the first fan are connected in a pipeline mode in sequence;
the outlet of the first fan is respectively connected with the outlet of the second electric regulating valve and the inlet pipeline of the filter;
the outlet of the filter, the dryer, the reactor, the second fan, the hot side channel of the cooler, the water separator, the temperature sensor, the first electric regulating valve, the check valve, the second flame arrester and the gas of the oil tankThe inlets are connected in sequence through pipelines; wherein the reactor is used for consuming oxygen in the gas entering the reactor to decompose hydrocarbon in the gas entering the reactor into CO 2 And H 2 O and then is discharged;
the inlet of the third fan is connected with external ram air, and the outlet of the third fan is respectively connected with the inlet of the second electric regulating valve and the inlet of the third electric regulating valve;
the outlet of the third electric regulating valve is connected with an inlet pipeline of the cold side channel of the cooler;
the outlet of the cooler cold side channel is used for discharging the gas in the cooler cold side channel to the outside of the cooler;
the probe of the oxygen concentration sensor extends into the oil tank and is used for measuring the oxygen concentration of the gas in the oil tank and transmitting the oxygen concentration to the automatic controller;
the current input end of the automatic controller is electrically connected with the temperature sensor and the oxygen concentration sensor respectively, and the current output end of the automatic controller is electrically connected with the first fan, the reactor, the second fan, the first electric regulating valve, the third fan, the second electric regulating valve and the third electric regulating valve respectively.
As a further optimization scheme of the fuel tank inerting device combining the plasma and photocatalysis technologies, the reactor comprises a shell, a plasma unit, a light unit, a catalyst unit and a fourth fan;
the shell comprises a plasma unit, a light unit, a catalyst unit and a fourth fan;
the plasma unit is used for carrying out preliminary decomposition on the gas entering the plasma unit, consuming oxygen in the gas entering the plasma unit and decomposing part of hydrocarbon in the gas entering the plasma unit into CO 2 And H 2 O；
The light unit is used for emitting ultraviolet light to irradiate the catalyst unit;
the catalyst unit is used for consuming oxygen in the gas entering the catalyst unit under the condition of ultraviolet irradiation and further decomposing residual hydrocarbon in the gas entering the catalyst unit into CO2 and H2O;
the fourth fan is arranged on the inner wall of the shell and is used for turbulent flow and enabling hydrocarbon decomposition to be more sufficient.
The beneficial effects of the invention are as follows:
the invention introduces the mixture of fuel vapor and air in the gas phase space at the upper part of the oil tank into a reactor containing a plasma module and a photocatalysis module, and decomposes the fuel vapor into carbon dioxide and water and consumes oxygen; introducing the dried nitrogen-rich gas into an oil tank for flushing and inerting; the system has the advantages of low operation cost, simple integral structure, high removal efficiency, capability of operating under normal conditions and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the reactor in the present invention.
In the figure, 1-oil tank, 2-first flame arrester, 3-first fan, 4-filter, 5-dryer, 6-reactor, 7-second fan, 8-cooler, 9-water separator, 10-temperature sensor, 11-first electric control valve, 12-check valve, 13-second flame arrester, 14-oxygen concentration sensor, 15-third fan, 16-second electric control valve, 17-third electric control valve, 18-automatic controller, 19-shell, 20-plasma unit, 21-light unit, 22-catalyst unit, 23-fourth fan.
Detailed Description
The invention is further described below with reference to examples. The following description is of some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention discloses a fuel tank inerting device combining plasma and photocatalysis technologies, which is characterized by comprising a fuel tank 1, a first flame arrester 2, a first fan 3, a filter 4, a dryer 5, a reactor 6, a second fan 7, a cooler 8, a water separator 9, a temperature sensor 10, a first electric regulating valve 11, a check valve 12, a second flame arrester 13, an oxygen concentration sensor 14, a third fan 15, a second electric regulating valve 16, a third electric regulating valve 17 and an automatic controller 18;
the oil tank 1 comprises a gas outlet and a gas inlet, and the automatic controller 18 comprises a current input end and a current output end;
the gas outlet of the oil tank 1, the first flame arrester 2 and the inlet of the first fan 3 are connected in a pipeline mode in sequence;
the outlet of the first fan 3 is respectively connected with the outlet of the second electric regulating valve 16 and the inlet pipeline of the filter 4;
the outlet of the filter 4, the dryer 5, the reactor 6, the second fan 7, a hot side channel of the cooler 8, the water separator 9, the temperature sensor 10, the first electric regulating valve 11, the check valve 12, the second flame arrester 13 and a gas inlet of the oil tank 1 are connected in a pipeline mode; wherein the reactor 6 is used for consuming oxygen in the gas entering the reactor to decompose hydrocarbon in the gas entering the reactor into CO 2 And H 2 O and then is discharged;
the inlet of the third fan 15 is connected with external ram air, and the outlet of the third fan is respectively connected with the inlet of the second electric regulating valve 16 and the inlet of the third electric regulating valve 17;
the outlet of the third electric regulating valve 17 is connected with an inlet pipeline of a cold side channel of the cooler 8;
the outlet of the cold side channel of the cooler 8 is used for discharging the gas in the cold side channel to the outside of the machine;
the probe of the oxygen concentration sensor 14 extends into the oil tank 1 and is used for measuring the oxygen concentration of the gas in the oil tank 1 and transmitting the oxygen concentration to the automatic controller 18;
the current input end of the automatic controller 18 is electrically connected with the temperature sensor 10 and the oxygen concentration sensor 14 respectively, and the current output end is electrically connected with the first fan 3, the reactor 6, the second fan 7, the first electric regulating valve 11, the third fan 15, the second electric regulating valve 16 and the third electric regulating valve 17 respectively.
As shown in fig. 2, the reactor 6 includes a housing 19, a plasma unit 20, a lamp unit 21, a catalyst unit 22, and a fourth fan 23;
the shell 19 comprises a plasma unit 20, a light unit 21, a catalyst unit 22 and a fourth fan 23;
the plasma unit 20 is used for primarily decomposing the gas entering the plasma unit, consuming oxygen in the gas entering the plasma unit and decomposing a part of hydrocarbon in the gas entering the plasma unit into CO 2 And H 2 O；
The light unit 21 is used for emitting ultraviolet light to irradiate the catalyst unit 22;
the catalyst unit 22 is used for consuming oxygen in the gas entering the catalyst unit under the condition of ultraviolet irradiation and further decomposing residual hydrocarbon in the gas entering the catalyst unit into CO2 and H2O;
the fourth fan 23 is placed on the inner wall of the housing 19 for turbulence and more sufficient hydrocarbon decomposition.
The working process of the invention is as follows:
1) Catalytic decomposition process
The mixed gas of the fuel vapor and the air in the gas phase space at the upper part of the oil tank 1 passes through the first flame arrester 2 and the first fan 3 under the suction action of the first fan 3 and then is mixed with the ram air flowing through the second electric regulating valve 16 so as to regulate the oxygen and the fuel vapor to be in a proper proportion; because the relative humidity has a great influence on photocatalytic degradation, the mixed gas enters a dryer 5 for drying after impurities are filtered by the filter 4; the dried gas enters a reactor 6 to be catalytically degraded, hydrocarbon is decomposed and oxygen is consumed, and CO is generated 2 And H 2 O；
As shown in fig. 2, the reactor 6 mainly includes a housing 19, a plasma unit 20, a light unit 21, a catalyst unit 22, and a fourth fan 23; the reaction gas is primarily decomposed in the plasma module; then enters a photocatalytic section comprising a light unit 21 and a catalyst unit 22; under the condition of ultraviolet irradiation, hydrocarbon is adsorbed on the surface of the catalyst and combined with free electrons or holes to undergo oxidation-reduction reaction, and the hydrocarbon is further decomposed into CO 2 、H 2 O；
The ram air at the outlet of the third fan 15 is divided into two parts, and one part of the ram air flows through the second electric regulating valve 16 and then is mixed with the gas from the oil tank to participate in the catalytic reaction; the two flows through a third electric regulating valve 17, then enters a cold side channel of the cooler to cool the reacted gas, and is discharged out of the cooler;
2) Inerting process
The nitrogen-rich gas at the outlet of the reactor 6 flows through a cooler 8 to be cooled by ram air under the suction effect of the second fan 7; the condensed water is then discharged in the water separator 9; after sequentially flowing through the temperature sensor 10, the first electric regulating valve 11, the check valve 12 and the second flame arrester 13, the water flows into the oil tank 1 for flushing and inerting;
3) Data acquisition and control process
The oxygen concentration sensor 14 detects the oxygen concentration in the gas phase space above the oil tank 1 through a probe rod and transmits a signal to the automatic controller 18; when the oxygen concentration is greater than a given value, the automatic controller 18 outputs control signals to communicate the first fan 3, the reactor 6, the second fan 7, the first electric regulating valve 11, the third fan 15, the second electric regulating valve 16 and the third electric regulating valve 17, and the system starts to work; when the oxygen concentration is less than the given value, the system stops working;
the temperature sensor 10 measures the temperature of the dry nitrogen-rich gas and transmits a signal to the automatic controller 18; when the temperature is greater than a given value, the automatic controller 18 outputs a control signal to close the first electric regulating valve 11 so as to prevent high-temperature gas from entering the oil tank and ensure the safety of the oil tank.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (1)
1. The fuel tank inerting device combining the plasma and photocatalysis technologies is characterized by comprising a fuel tank (1), a first flame arrester (2), a first fan (3), a filter (4), a dryer (5), a reactor (6), a second fan (7), a cooler (8), a water separator (9), a temperature sensor (10), a first electric regulating valve (11), a check valve (12), a second flame arrester (13), an oxygen concentration sensor (14), a third fan (15), a second electric regulating valve (16), a third electric regulating valve (17) and an automatic controller (18);
the oil tank (1) comprises a gas outlet and a gas inlet, and the automatic controller (18) comprises a current input end and a current output end;
the gas outlet of the oil tank (1), the first flame arrester (2) and the inlet of the first fan (3) are connected through pipelines in sequence;
the outlet of the first fan (3) is respectively connected with the outlet of the second electric regulating valve (16) and the inlet pipeline of the filter (4);
the outlet of the filter (4), the dryer (5), the reactor (6), the second fan (7), the hot side channel of the cooler (8), the water separator (9), the temperature sensor (10), the first electric regulating valve (11), the check valve (12), the second flame arrester (13) and the gas inlet of the oil tank (1) are connected in sequence through pipelines; wherein the reactor (6) is adapted to consume oxygen in the gas entering it so that hydrocarbons in the gas entering it are decomposed into CO 2 And H 2 O and then is discharged;
the inlet of the third fan (15) is connected with external ram air, and the outlet of the third fan is respectively connected with the inlet of the second electric regulating valve (16) and the inlet of the third electric regulating valve (17);
the outlet of the third electric regulating valve (17) is connected with an inlet pipeline of a cold side channel of the cooler (8);
the outlet of the cold side channel of the cooler (8) is used for discharging the gas in the cooler to the outside of the machine;
the probe of the oxygen concentration sensor (14) extends into the oil tank (1) and is used for measuring the oxygen concentration of the gas in the oil tank (1) and transmitting the oxygen concentration to the automatic controller (18);
the current input end of the automatic controller (18) is respectively and electrically connected with the temperature sensor (10) and the oxygen concentration sensor (14), and the current output end is respectively and electrically connected with the first fan (3), the reactor (6), the second fan (7), the first electric regulating valve (11), the third fan (15), the second electric regulating valve (16) and the third electric regulating valve (17);
the reactor (6) comprises a shell (19), a plasma unit (20), a light unit (21), a catalyst unit (22) and a fourth fan (23);
the shell (19) comprises a plasma unit (20), a light unit (21), a catalyst unit (22) and a fourth fan (23);
the plasma unit (20) is used for carrying out preliminary decomposition on the gas entering the plasma unit, consuming oxygen in the gas entering the plasma unit and decomposing part of hydrocarbon in the gas entering the plasma unit into CO 2 And H 2 O；
The light unit (21) is used for emitting ultraviolet light to irradiate the catalyst unit (22);
the catalyst unit (22) is used for consuming oxygen in the gas entering the catalyst unit under the condition of ultraviolet irradiation to further decompose residual hydrocarbon in the gas entering the catalyst unit into CO 2 And H 2 O；
The fourth fan (23) is placed on the inner wall of the housing (19) for turbulence and more sufficient hydrocarbon decomposition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810661364.2A CN108639361B (en) | 2018-06-25 | 2018-06-25 | Fuel tank inerting device combining plasma and photocatalysis technologies |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661364.2A CN108639361B (en) | 2018-06-25 | 2018-06-25 | Fuel tank inerting device combining plasma and photocatalysis technologies |
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| CN108639361A CN108639361A (en) | 2018-10-12 |
| CN108639361B true CN108639361B (en) | 2023-09-26 |
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| CN109774954B (en) * | 2019-01-22 | 2024-03-19 | 南京航空航天大学 | Temperature-controllable fuel tank inerting device based on catalytic combustion technology |
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| CN104843188A (en) * | 2015-04-22 | 2015-08-19 | 南京航空航天大学 | Aircraft oil tank inerting device based on catalytic oxidation technology |
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