CN212313891U - Aircraft fuel tank inerting device based on biological deoxidization - Google Patents
Aircraft fuel tank inerting device based on biological deoxidization Download PDFInfo
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- CN212313891U CN212313891U CN202020182668.3U CN202020182668U CN212313891U CN 212313891 U CN212313891 U CN 212313891U CN 202020182668 U CN202020182668 U CN 202020182668U CN 212313891 U CN212313891 U CN 212313891U
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- 239000002828 fuel tank Substances 0.000 title claims description 18
- 235000015097 nutrients Nutrition 0.000 claims abstract description 85
- 239000007789 gas Substances 0.000 claims abstract description 74
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000001301 oxygen Substances 0.000 claims abstract description 61
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 61
- 244000005700 microbiome Species 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 38
- 230000000813 microbial effect Effects 0.000 claims abstract description 15
- 239000000446 fuel Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 230000001276 controlling effect Effects 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 17
- 238000012856 packing Methods 0.000 claims description 16
- 238000000746 purification Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 238000006392 deoxygenation reaction Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 14
- 240000004808 Saccharomyces cerevisiae Species 0.000 abstract description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 7
- 239000001569 carbon dioxide Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 230000004060 metabolic process Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 51
- 238000000034 method Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000004880 explosion Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- RJCQBQGAPKAMLL-UHFFFAOYSA-N bromotrifluoromethane Chemical compound FC(F)(F)Br RJCQBQGAPKAMLL-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
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- 239000000523 sample Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model discloses an aircraft oil tank inerting device based on biological deoxidization, including biological deoxidization inerting subsystem, microorganism nutrient solution supply subsystem and observing and controlling subsystem. The utility model applies the microorganisms such as yeast to an airborne inerting system to consume oxygen to reduce the oxygen content in the oil tank, simultaneously can also generate a large amount of carbon dioxide in the microbial growth and metabolism process, leads a steam mixture on the upper part of the oil tank into a biological deaerator after passing through a fan and regulating the temperature, and leads the treated gas into the upper part of the oil tank to be washed to achieve the inerting purpose after being filtered and dried; the temperature of the biological deaerator is controlled in an environment which is most suitable for the rapid growth and reproduction of microorganisms such as yeast and the like, and microbial nutrient solution is supplied through a liquid supply pump, so that the microorganisms can consume organic matters to rapidly deaerate. The device controls the system to work through the oxygen concentration sensor and the temperature sensor, and has the advantages of no aircraft fuel compensation loss, simple structure, no environmental pollution and the like.
Description
Technical Field
The utility model relates to a belong to fire prevention and explosion protection technical field, specifically indicate an aircraft tank inerting device based on biological deoxidization.
Background
The fire and explosion protection capability of the aircraft fuel tank is related to the survival capability and the vulnerability of the aircraft, and also related to the utilization rate and the cost of the aircraft and the safety of passengers. For years, through a large amount of experimental researches and practical application of various fire-proof and explosion-proof technical measures, the results show that: inerting aircraft fuel tanks using an onboard nitrogen generation system is a viable and effective solution. Inerting aircraft fuel tanks with nitrogen-rich gas to increase the safety of the tanks has become a requirement of FAA's latest airworthiness regulations (clause 25-981).
The methods for fire prevention and explosion suppression of airplane fuel tanks are many, and can be generally divided into two main categories: one is passive inerting, i.e., filling the tank with an explosion-proof material. According to different materials, the method can be divided into two types: firstly, the reticular polyurethane foam material (explosion suppression foam) is filled to suppress the flame transmission after combustion or explosion; the other is to fill the aluminum foil mesh to conduct heat to prevent the accumulation of combustion or explosion heat. The main disadvantages of passive explosion suppression measures are: the fire can be restrained only after the fire occurs in the oil tank, and the fire cannot be prevented actively. The other type is an active explosion suppression measure which has specific modes of liquid nitrogen inerting, Halon1301 inerting, fuel oil catalysis, airborne inerting and the like.
The fuel tank inerting is to adopt a technical measure to control the volume oxygen concentration of a gas phase space at the upper part of a fuel tank of an airplane, and the oxygen concentration level is always kept lower than the oxygen concentration level required for supporting fuel oil combustion in the whole process of airplane flight. Foreign research work shows that: when the oxygen concentration in the upper gas phase space of the oil tank of the airplane is lower than 9 percent, even if the airplane is attacked by a 23 mm-caliber combustion bomb, the airplane can not cause combustion and explosion. At present, 9 percent of the gas phase space at the upper part of the oil tank is generally used as the maximum allowable oxygen concentration limit index of a military machine after adopting an inerting technology abroad; and 12% is used as the maximum oxygen concentration limit index of the civil engine.
The biological oxygen removal method is a new environment-friendly technology which is more and more commonly adopted, and compared with the traditional oxygen removal technology, the technology has the advantages of low operation cost, low energy consumption, no aircraft fuel compensation loss, normal-temperature treatment, simple structure, no environmental pollution and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that exists among the prior art, provided an aircraft tank inerting device based on biological deoxidization, had no aircraft fuel compensation loss, simple structure, advantages such as no environmental pollution.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an aircraft fuel tank inerting device based on biological oxygen removal comprises a fuel tank, an oil gas pretreatment system, a biological oxygen removal inerting subsystem, a gas purification system and a microbial nutrient solution supply subsystem, wherein the fuel tank, the oil gas pretreatment system, the biological oxygen removal inerting subsystem and the gas purification system are connected end to end through pipelines;
the oil-gas pretreatment system sequentially comprises a fan, a filtering type oil separator and a gas heater, and is used for separating oil drops and adjusting the temperature of gas;
the biological oxygen removal inerting subsystem comprises a biological oxygen remover and a nutrient solution circulating system, wherein the biological oxygen remover comprises a shell, a packing layer and a nutrient solution dropper which are arranged in the shell, and a gas inlet and a gas outlet are respectively arranged at two ends of the shell; the packing layer is made of polyethylene materials and provides a place for the growth and the propagation of microorganisms, the inside of the packing layer is of a porous structure, two ends of the packing layer are provided with biological membranes formed by the growth of the microorganisms, the nutrient liquid drop tubes are distributed in the packing layer, and nutrient liquid is uniformly dispersed in the packing layer; the nutrient solution circulating system comprises a circulating pump connected with a nutrient solution outlet at the lower part of the biological deaerator, and the nutrient solution outlet collects surplus nutrient solution which is then connected to a nutrient solution inlet at the upper part of the biological deaerator through the circulating pump to form nutrient solution flowing circulation;
the microbial nutrient solution supply subsystem comprises a microbial nutrient solution box and a nutrient solution supply pump, and is connected to a nutrient solution inlet at the upper part of the biological deaerator through a pipeline and enters the nutrient solution dropper;
the gas purification system comprises a filter and a dryer, and is used for filtering particle impurities and removing moisture;
the system also comprises a measurement and control subsystem which comprises a controller and measurement and control devices arranged in other systems connected with the controller.
Further, the utility model discloses in, the gas entrance of casing is provided with the oil separating membrane for the oil vapour in the separation fuel vapour mixture, oil separating membrane below is connected with the oil catch bowl, is used for collecting the fuel of separating.
Further, the utility model discloses in, the nutrient solution burette is responsible for by a level and constitutes rather than a plurality of perpendicular bleeder of intercommunication, and the nutrient solution entry is connected at the center to the level, and the even interval of bleeder sets up and is responsible for all around at the level, and is equipped with the capillary hole on the bleeder pipe wall for with the even dispersion of nutrient solution in the packing layer.
Further, in the utility model discloses in, observe and control the measurement and control device in the subsystem and include: the device comprises an oil tank, a gas purification system, a first electric regulating valve, a second electric regulating valve and a third electric regulating valve which are arranged behind a microorganism nutrient solution tank, and also comprises a temperature sensor arranged behind a gas heater, an oxygen concentration sensor arranged at the upper part of the oil tank and a flowmeter arranged at the outlet of a circulating pump; the controller is electrically connected with the first electric regulating valve, the fan, the gas heater, the temperature sensor, the second electric regulating valve, the oxygen concentration sensor, the third electric regulating valve, the nutrient solution supply pump, the circulating pump and the flowmeter respectively and is used for controlling the first electric regulating valve, the fan, the gas heater, the second electric regulating valve, the third electric regulating valve, the nutrient solution supply pump and the circulating pump to work according to the sensing data of the temperature sensor, the oxygen concentration sensor and the flowmeter.
The utility model also discloses a working method of aircraft tank inerting device based on biological deoxidization, including following step:
1) the fuel vapor mixture at the upper part of the oil tank is pumped into an oil separator by a fan to separate oil drops, and then enters a biological oxygen removal inerting subsystem after being regulated to a set temperature by a gas heater;
2) the microorganism nutrient solution in the microorganism nutrient solution tank is pumped into the biological deaerator through the nutrient solution supply pump, the microorganisms therein grow and propagate, consume a large amount of oxygen and release carbon dioxide inert gas, thereby reducing the oxygen content in the flowing gas and improving the content of the inert gas to obtain deaerated gas;
3) the deoxygenated gas from the biological deoxygenator is filtered by a filter of a gas purification system to remove solid particle impurities, and then is dried by a dryer to obtain purified deoxygenated gas, and finally enters the upper part of the oil tank to flush the purified deoxygenated gas so as to achieve the aim of inerting.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
the utility model discloses utilize characteristics and mechanism that microorganisms such as yeast need a large amount of oxygen in the quick growth and the reproduction process, apply to microorganisms such as yeast and consume oxygen and reduce the oxygen content in the oil tank to machine and carry inertization system, also can produce a large amount of carbon dioxide in the microorganism growth metabolic process simultaneously, let in biological oxygen-eliminating device after passing through the fan and the temperature regulation steam mixture on oil tank upper portion, gaseous filtration drying after the processing is rethread oil tank upper portion and is washed it and reach the purpose of inertization; the temperature of the biological deaerator is controlled in an environment which is most suitable for the rapid growth and reproduction of microorganisms such as yeast and the like, and microbial nutrient solution is supplied through a liquid supply pump, so that the microorganisms can consume organic matters to rapidly deaerate. The device controls the system to work through the oxygen concentration sensor and the temperature sensor, and has the advantages of no aircraft fuel compensation loss, simple structure, no environmental pollution and the like.
Drawings
FIG. 1 is a schematic view of an aircraft fuel tank inerting apparatus based on biological oxygen removal;
FIG. 2 is a schematic structural view of a biological oxygen remover of the present invention;
the system comprises an oil tank 1, a first electric regulating valve 2, a fan 3, an oil separator 4, a gas heater 5, a biological deaerator 6, a temperature sensor 7, a filter 8, a dryer 9, a second electric regulating valve 10, an oxygen concentration sensor 11, a microbial nutrient solution tank 12, a third electric regulating valve 13, a nutrient solution supply pump 14, a controller 15, a circulating pump 16, a flowmeter 17, a shell 101, an oil separating membrane 102, a biological membrane 103, a filler layer 104, an oil collector 105 and a nutrient solution dropper 106.
Detailed Description
The technical scheme of the utility model is further explained in detail with the attached drawings as follows:
the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.
As shown in fig. 1, fig. 1 is a biological oxygen scavenging based aircraft fuel tank inerting apparatus. The embodiment provides an aircraft fuel tank inerting device based on biological deoxygenation, which comprises a fuel tank 1, a first electric regulating valve 2, a fan 3, an oil separator 4, a gas heater 5, a biological deoxygenator 6, a temperature sensor 7, a filter 8, a dryer 9, a second electric regulating valve 10, an oxygen concentration sensor 11, a microbial nutrient solution 12, a third electric regulating valve 13, a nutrient solution supply pump 14, a controller 15, a circulating pump 16 and a flow meter 17;
the outlet of the oil tank 1, the first electric regulating valve 2, the fan 3, the oil separator 4, the gas heater 5 and the inlet of the biological deaerator 6 are sequentially connected through pipelines; the oil separator 4 is used for separating oil drops in the fuel-vapor mixture; the biological deaerator 6 is used for quickly reducing the oxygen content in gas flowing through by consuming a large amount of oxygen when microorganisms grow and reproduce quickly, and a large amount of carbon dioxide inert gas can be generated in the microbial growth and metabolism process;
the outlet of the biological deaerator 6 is sequentially connected with the filter 8, the dryer 9, the second electric regulating valve 10 and the inlet of the oil tank 1 through pipelines;
the filter 8 is used for filtering solid particle impurities carried out by the gas from the biological deaerator 6; the dryer 9 is used for removing moisture in the gas;
the outlet of the microbial nutrient solution 12 is connected with the nutrient solution supply inlet of the biological deaerator 6 through a third electric regulating valve 13 and a nutrient solution supply pump 14; an inlet of the circulating pump 16 is connected with a nutrient solution outlet of the biological deaerator 6, an outlet of the circulating pump 16 is connected with a flow meter 17, and then the circulating pump is connected to a nutrient solution supply inlet of the biological deaerator 6 to form a nutrient solution flowing circulation; the microorganism nutrient solution 12 is used for providing organic matters required by the rapid growth and reproduction of microorganisms;
the temperature sensor 7 is arranged at the outlet of the gas heater 5 and used for monitoring the temperature of the gas flowing into the biological deaerator 6 and ensuring that the temperature is in the most suitable range for the growth of microorganisms;
the oxygen concentration sensor 11 is arranged at the upper part of the oil tank 1 and is used for monitoring the oxygen concentration of a gas phase space;
the controller 15 is electrically connected with the first electric regulating valve 2, the fan 3, the gas heater 5, the temperature sensor 7, the second electric regulating valve 10, the oxygen concentration sensor 11, the third electric regulating valve 13, the nutrient solution supply pump 14, the circulating pump 16 and the flow meter 17 respectively, and is used for controlling the first electric regulating valve 2, the fan 3, the gas heater 5, the second electric regulating valve 10, the third electric regulating valve 13, the nutrient solution supply pump 14 and the circulating pump 16 to work according to the sensing data of the temperature sensor 7, the oxygen concentration sensor 11 and the flow meter 17.
As shown in fig. 2, the biological oxygen remover 6 comprises a shell 101, an oil separation membrane 102, a biological membrane 103, a filler layer 104, an oil collecting tank 105 and a nutrient solution dropper 106;
the left end of the shell 101 is a gas inlet, and the right end of the shell is a gas outlet; an oil separation membrane 102, a biological membrane 103 and a filler layer 104 are sequentially arranged in the shell 101 from the right end to the left end; the nutrient solution inlet is connected with the inlet of a nutrient solution dropper 106 through the shell 101; the nutrient solution outlet is positioned at the lower part of the shell 101 and is used for collecting surplus nutrient solution;
the oil separation membrane 102 is positioned at the inlet of the shell 101 and is used for separating oil vapor in the fuel vapor mixture; the oil collecting tank 105 is connected with the oil separating membrane and is used for collecting the separated fuel oil;
the packing layer 104 is a place for the growth and propagation of microorganisms, the inside of the packing layer is made of a polyethylene material with a porous structure, and two sides of the packing layer are provided with biological films 103 formed by the growth of the microorganisms; for gas flow-through and for rapid reduction of oxygen content in the gas flowing through by consumption of oxygen through rapid growth and proliferation of microorganisms;
the nutrient solution dripping pipes 106 are distributed on the filler layer 104 and are used for uniformly dispersing the nutrient solution in the filler layer 104.
The utility model relates to an aircraft tank inerting device's working process based on biological deoxidization as follows:
1) biological oxygen removal process
The mixed gas of fuel vapor and air in the gas phase space at the upper part of the oil tank 1 passes through the oil separator under the suction action of the first fan 3, the oil separator 4 can separate oil drops carried by the mixed gas, then the gas temperature monitored by the temperature sensor 5 is transmitted to the controller 15 through the gas heater 5 to automatically adjust the gas temperature, and the gas temperature entering the biological deaerator 6 is ensured to be in the optimum range for the growth of microorganisms; after the mixed gas enters the biological deaerator 6, oil vapor in the mixed gas is further separated through the oil separation membrane 102, then the mixed gas enters the porous polyethylene filler layer 104 through the biological membrane, the oxygen content in the gas is rapidly reduced through the rapid growth and the oxygen consumption of the propagation of microorganisms, and a large amount of carbon dioxide inert gas is generated in the microbial growth and metabolism process; the mixed inert gas generated by the microbial reaction flows through the biological membrane to reach the outlet of the biological oxygen remover 6;
an outlet of the microorganism nutrient solution tank 12 is connected with a nutrient solution supply inlet of the biological deaerator 6 through a third electric regulating valve 13 and a nutrient solution supply pump 14, and nutrient solution droppers 106 are distributed on the packing layer 104 and used for uniformly dispersing nutrient solution in the packing layer 104; an inlet of a circulating pump 16 is connected with a nutrient solution outlet of the biological deaerator 6, an outlet of the circulating pump 16 is connected with a flow meter, and then the circulating pump is connected with a nutrient solution supply inlet of the biological deaerator 6 to form a nutrient solution flowing circulation; the microorganism nutrient solution 12 is used for providing organic matters required by the rapid growth and reproduction of microorganisms;
2) inertization process
The biological deaerator 6 consumes a large amount of oxygen, improves the nitrogen concentration in the gas, and the mixed gas of the nitrogen-rich gas and the carbon dioxide at the outlet flows through the filter 8, the dryer 9, the second electric regulating valve 10 and the inlet of the oil tank 1, flows into the oil tank 1 for flushing, and replaces the fuel vapor mixed gas at the upper part of the oil tank 1 to achieve the inerting purpose;
3) data acquisition and control process
The probe of the oxygen concentration sensor 11 extends into the upper space of the oil tank 1 and is used for monitoring the oxygen concentration in the space and transmitting data to the controller 15. When the oxygen concentration is lower than the set value, the controller 15 outputs signals to control the first electric control valve 2, the fan 3 and the second electric control valve 10 to work, and when the oxygen concentration is higher than the set value, the devices are controlled to stop working.
The temperature sensor 7 is arranged at the outlet of the gas heater 5 and used for monitoring the temperature of the gas flowing into the biological deaerator 6 and ensuring that the temperature of the gas is in the most suitable range for the growth of microorganisms. When the temperature is lower than the set value, the controller 15 outputs a signal to control the gas heater 5 to operate, and when the temperature is higher than the set value, the controller controls the devices to stop operating.
The flowmeter 17 is connected with the outlet of the circulating pump 16 and used for monitoring the flow of the microbial nutrient solution at the outlet of the biological deaerator 6. When the flow rate of the microorganism nutrient solution is lower than a set value, the controller 15 outputs signals to control the third electric regulating valve 13 and the nutrient solution supply pump 14 to work, and when the flow rate of the microorganism nutrient solution is higher than the set value, the devices are controlled to stop working.
The utility model has the advantages that:
the utility model discloses utilize characteristics and mechanism that microorganisms such as yeast need a large amount of oxygen in the quick growth and the reproduction process, apply to microorganisms such as yeast and consume oxygen and reduce the oxygen content in the oil tank to machine and carry inertization system, also can produce a large amount of carbon dioxide in the microorganism growth metabolic process simultaneously, let in biological oxygen-eliminating device after passing through the fan and the temperature regulation steam mixture on oil tank upper portion, gaseous filtration drying after the processing is rethread oil tank upper portion and is washed it and reach the purpose of inertization; the temperature of the biological deaerator is controlled in an environment which is most suitable for the rapid growth and reproduction of microorganisms such as yeast and the like, and microbial nutrient solution is supplied through a liquid supply pump, so that the microorganisms can consume organic matters to rapidly deaerate. The device controls the system to work through the oxygen concentration sensor and the temperature sensor, and has the advantages of no aircraft fuel compensation loss, simple structure, no environmental pollution and the like.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (4)
1. The utility model provides an aircraft tank inerting device based on biological deoxidization which characterized in that: the biological oxygen-removing and inerting system comprises an oil tank (1), an oil-gas pretreatment system, a biological oxygen-removing and inerting subsystem, a gas purification system and a microbial nutrient solution supply subsystem which are connected with the biological oxygen-removing and inerting subsystem through pipelines;
the oil-gas pretreatment system sequentially comprises a fan (3), a filtering type oil separator (4) and a gas heater (5) and is used for separating oil drops and adjusting the temperature of gas;
the biological oxygen removal inerting subsystem comprises a biological oxygen remover (6) and a nutrient solution circulating system, wherein the biological oxygen remover (6) comprises a shell (101), a packing layer (104) and a nutrient solution dropper (106) which are arranged inside the shell, and a gas inlet and a gas outlet are respectively arranged at two ends of the shell (101); the packing layer (104) is made of polyethylene materials, provides a place for the growth and the propagation of microorganisms, has a porous structure inside, and is provided with a biological membrane (103) formed by the growth of the microorganisms at two ends, and the nutrient solution droppers (106) are distributed in the packing layer (104) and uniformly disperse the nutrient solution in the packing layer (104); the nutrient solution circulating system comprises a circulating pump (16) connected with a nutrient solution outlet at the lower part of the biological deaerator (6), and the nutrient solution outlet collects surplus nutrient solution which is then connected to a nutrient solution inlet at the upper part of the biological deaerator (6) through the circulating pump (16) to form nutrient solution flowing circulation;
the microorganism nutrient solution supply subsystem comprises a microorganism nutrient solution box (12) and a nutrient solution supply pump (14), and a nutrient solution inlet connected to the upper part of the biological deaerator (6) through a pipeline enters a nutrient solution dropper (106);
the gas purification system comprises a filter (8) and a dryer (9) and is used for filtering particle impurities and removing moisture;
the system also comprises a measurement and control subsystem which comprises a controller (15) and measurement and control devices arranged in other systems connected with the controller.
2. The aircraft fuel tank inerting device based on biological oxygen removal as defined in claim 1, wherein an oil separation membrane (102) is disposed at a gas inlet of the housing (101) for separating oil vapor in the fuel-vapor mixture, and an oil collection tank (105) is connected below the oil separation membrane (102) for collecting the separated fuel.
3. The aircraft fuel tank inerting device based on biological deoxygenation as defined in claim 1, wherein the nutrient solution dropper (106) comprises a horizontal main pipe and a plurality of vertical branch pipes connected to the horizontal main pipe, the center of the horizontal main pipe is connected to the nutrient solution inlet, the branch pipes are uniformly arranged around the horizontal main pipe at intervals, and capillary holes are formed on the pipe walls of the branch pipes for uniformly dispersing the nutrient solution in the filler layer (104).
4. The aircraft fuel tank inerting device based on biological oxygen removal of claim 1, wherein the measurement and control device in the measurement and control subsystem comprises: the device comprises an oil tank (1), a gas purification system, a first electric regulating valve (2), a second electric regulating valve (10) and a third electric regulating valve (13) which are arranged behind a microorganism nutrient solution tank (12), and also comprises a temperature sensor (7) arranged behind a gas heater (5), an oxygen concentration sensor (11) arranged at the upper part of the oil tank (1) and a flowmeter (17) arranged at the outlet of a circulating pump (16); the controller (15) is electrically connected with the first electric regulating valve (2), the fan (3), the gas heater (5), the temperature sensor (7), the second electric regulating valve (10), the oxygen concentration sensor (11), the third electric regulating valve (13), the nutrient solution supply pump (14), the circulating pump (16) and the flowmeter (17) respectively and used for controlling the first electric regulating valve (2), the fan (3), the gas heater (5), the second electric regulating valve (10), the third electric regulating valve (13), the nutrient solution supply pump (14) and the circulating pump (16) to work according to the sensing data of the temperature sensor (7), the oxygen concentration sensor (11) and the flowmeter (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020182668.3U CN212313891U (en) | 2020-02-19 | 2020-02-19 | Aircraft fuel tank inerting device based on biological deoxidization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020182668.3U CN212313891U (en) | 2020-02-19 | 2020-02-19 | Aircraft fuel tank inerting device based on biological deoxidization |
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| Publication Number | Publication Date |
|---|---|
| CN212313891U true CN212313891U (en) | 2021-01-08 |
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| CN202020182668.3U Active CN212313891U (en) | 2020-02-19 | 2020-02-19 | Aircraft fuel tank inerting device based on biological deoxidization |
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