CN207748032U - A kind of supercharging nitrogen fuel tank inerting system processed - Google Patents
A kind of supercharging nitrogen fuel tank inerting system processed Download PDFInfo
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- CN207748032U CN207748032U CN201721786196.7U CN201721786196U CN207748032U CN 207748032 U CN207748032 U CN 207748032U CN 201721786196 U CN201721786196 U CN 201721786196U CN 207748032 U CN207748032 U CN 207748032U
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Abstract
The utility model discloses a kind of supercharging nitrogen fuel tank inerting systems processed, belong to fire-proof and explosion-proof technical field, the utility model by using from supercharging mode improve engine bleed pressure and clean, dry after pass through hollow-fibre membrane, so that it is isolated nitrogen-rich gas, and fuel tank is injected by control system on demand and reaches removing fuel tank oxygen；Being applied in combination using turbo-expander and compressor simultaneously generates expansion work, and the work(of expanding machine output drives compressor to compress engine bleed, further increases gas pressure and reaches pressure needed for Middle hollow fiber membrane, improves nitrogen efficiency processed.Nitrogen-rich gas is filled with fuel tank, reduces oxygen content in fuel tank, during being filled with nitrogen, can automatic control device flow-rate adjustment is carried out to gas, generate required inert gas, be at incombustible state, achieve the purpose that fire-proof and explosion-proof；And can carry out automatically controlling, have inerting efficient, less cost of power.
Description
Technical field
The utility model belongs to fire-proof and explosion-proof technical field, in particular to a kind of supercharging nitrogen fuel tank inerting system processed.
Background technology
The main reason for aircraft fuel tank combustion explosion is aviation accident, in aircraft refuelling, maintenance or flight course, by
In the presence of electrostatic, thunder and lightning or external incendiary source, cause fuel tank initiation safety accident on fire, and for military aircraft, flight item
Part is more severe, under the attack that wartime is in artillery fire and bullet is easier that fire is caused to lead to fatal crass, causes great damage
It loses.
The fire-proof and explosion-proof effective ways of fuel tanker, which have the transmission of control flame and change fuel oil, fires two kinds of the limit, corresponding skill
Art scheme can be divided into passive type and active.Passive type is Separated explosion-proof technology, mainly passes through netted or bee when fire generates
The filling of nest shape metal foam inhibits flame to transmit and fuel oil is prevented to outflow, and prevents explosion caused by fuel tank burning；Active is machine
Fuel tank deoxygenation technology is carried, major way is that inert gas such as N is injected into fuel tank2、CO2Etc. displacing fuel oil and fuel tank gas phase
O in space2, make the reduction of its oxygen concentration, achieve the purpose that Flammability limits hereinafter, fire-proof and explosion-proof to reach.
Passive fire protection explosion-proof technology needs to occupy fuel tank larger volume space in practical applications, and periodic replacement is needed to set
It is standby, and part metals foam enters controlling methodology of oil pipeline and easily causes line clogging.In view of this, from the seventies in last century with
Come, airborne tank deaerating type of cycles develops very rapid, especially airborne nitrogen deaerating type of cycles processed.Hollow fiber membrane nitrogen deaerating type of cycles
It is to be most widely used at present and fuel tanker fireproof and explosion suppression technology the most economic.It leads to engine bleed or ram-air
Hollow-fibre membrane is crossed, the nitrogen of high-purity is isolated, and nitrogen-rich gas is injected into fuel tank, reduces fuel tank upper gaseous phase space and combustion
Oxygen concentration in oil prevents fuel tank combustion explosion when incendiary source generates.Middle hollow fiber membrane air nitrogen deaerating type of cycles
Biggest advantage is to realize fuel tank deoxygenation to whole envelope, and efficient, apparatus structure simple and compact, but hollow-fibre membrane point
High from pressure needed for nitrogen-rich gas, engine bleed, which cannot often reach pressure needed for separation, causes the reduction of nitrogen-rich gas concentration,
Influence fuel tank oxygen removal efficiency.
Utility model content
The utility model is directed to problems of the prior art, it is proposed that a kind of supercharging nitrogen fuel tank inerting system processed, this
Utility model produces nitrogen-rich gas by increasing air pressure, using hollow-fibre membrane and carries out effective fireproof and explosion suppression to fuel tank,
And the device of the utility model can carry out automatically controlling, inerting is efficient, less energy consumption.
The utility model is realized in this way：
A kind of supercharging nitrogen fuel tank inerting system processed, the device are connected in turn by engine bleed part by pipeline
Shut-off valve, filter, air dryer, the second cooler, the first triple valve；
The first threeway valve outlet is divided into two branch way outlets；
The first triple valve first outlet by pipeline be sequentially connected compressor, the first cooler hot-side channel,
Separator gas passage, temperature sensor, first flow regulating valve, hollow fiber membrane gas entrance, second flow regulating valve,
Fuel tank；The nitrogen outlet of the hollow-fibre membrane is sequentially connected to metering hole, fuel tank by pipeline；The hollow-fibre membrane
Oxygen outlet is connected to by pipeline with cockpit；
The second outlet of first triple valve is sequentially connected turbo-expander, the second triple valve, first by pipeline
Cooler cold side channel；Second triple valve is also associated with wind turbine；
The turbo-expander is connect by connecting rod with compressor；
Further include controller in the device；
The controller includes two input terminals and four output ends；
The temperature sensor is inputted by cable and controller respectively with oxygen concentration sensor signal output end
End connection；
The first triple valve of the shut-off valve, the second triple valve, first flow regulating valve, second flow regulating valve pass through respectively
Cable is connect with controller output end.
Further, the second flow regulating valve is connected to the hollow, upper of fuel tank.
Further, the second flow regulating valve can also be connected to fuel tank by gas huge rock；And the gas huge rock
It is installed on the fluid bottom of fuel tank；The gas huge rock can be crossed high temperature sintering and be formed by diamantane, carborundum；
Further, the second flow regulating valve can also be connected to fuel tank by washing the gas access of injector；
And the washing injector is located under tank bottoms minimum level；The oil tank fuel is exported to washing injector fuel oil and enters
Oil pump is connected with by pipeline between mouthful, the washing injector gas access by pipeline respectively with second flow modulating gas valve
Body outlet, the connection of current limliting hole exits.
Further, the nitrogen outlet of the hollow-fibre membrane and the second flow pass through pipeline between adjusting valve inlet
It is connected with turbo-expander；The turbo-expander is connect with compressor by connecting rod.
Further, the controller is connected to fuel tank by oxygen concentration sensor；The oxygen concentration sensor passes through
Probe is connect with the hollow, upper of fuel tank.
Further, first cooler cold side channel outlet, the outlet of separator aquaporin, the second cooler cold side
Channel outlet is communicated with air respectively.
Further, the second cooler cold side channel is passed through ram-air.
Further, the separator is the equipment that cooled removes vapor in gas；Hollow-fibre membrane material therefor
For polyethylene, polypropylene, polytetrafluoroethylene (PTFE), Kynoar, polysulfones or smelling polyphenylene oxide；Adsorption material used in air dryer
Material is the solid particle or powder that molecular sieve, silica gel, lithium chloride etc. have vapor suction-operated.
It is specific as follows the invention also discloses a kind of working method of supercharging nitrogen fuel tank inerting system processed：
1）When oxygen concentration sensor detects that the oxygen concentration of fuel tank reaches Flammability limits, control is transmitted a signal to
Device, fuel tank deaerating type of cycles are started to work, and controller adjusts in real time according to temperature sensor and the monitor value of oxygen concentration sensor
The aperture of shut-off valve, the first triple valve, the second triple valve, first flow regulating valve, second flow regulating valve changes fuel tank deoxygenation
The engine bleed amount of system makes deaerating type of cycles generate suitable inert gas, carries out deoxygenation to fuel tank, it is empty to reduce fuel tank gas phase
Between oxygen concentration.
2）For fuel tank after deoxygenation after a period of time, oxygen concentration sensor detects that fuel tank upper gaseous phase space oxygen concentration is less than
Shut-off valve air inlet is closed in oxygen concentration needed for burning, controller automatic adjustment, and deaerating type of cycles does not generate inert gas, deaerating type of cycles
It is stopped.
The advantageous effect of the utility model compared with prior art is：
1）The utility model discloses using hollow-fibre membrane produce nitrogen-rich gas to fuel tank carry out fireproof and explosion suppression device,
Using improving engine bleed pressure from supercharging mode and cleaning, so that it is isolated nitrogen-rich gas, effectively increase air pressure
Power, overcoming cannot reach point when Middle hollow fiber membrane air carries out fuel tanker deoxygenation in the prior art from engine bleed
The shortcomings that being required from film hyperbar；
2）Turbo-expander is arranged simultaneously in the utility model, by will be introduced after the aircraft engine bleed dry filter of part
Turbo-expander decrease temperature and pressure, and expansion work is generated, the work(of expanding machine output drives compressor to compress engine bleed,
It further increases gas pressure and reaches pressure needed for Middle hollow fiber membrane, improve nitrogen efficiency processed；Turbo-expander is utilized simultaneously
With being applied in combination for compressor, reduce the energy expenditure of aircraft, improves energy utilization efficiency；
3）It injects fuel tank on demand by control system and reaches removing fuel tank oxygen, the purpose for preventing fuel tank from burning, such energy
Improve oxygen removal efficiency
4）The utility model also by the way that gas huge rock is arranged, the replacement of oxygen in fuel oil is come out, oxygen concentration is reduced, reaches
The purpose of fuel tank deoxygenation；And injector is washed by setting, displace the oxygen in fuel oil, and in washing process with it is other
Fuel oil mixes, and further decreases the oxygen concentration in other fuel oils, achievees the purpose that wash deoxygenation；
5）By the method for the utility model, nitrogen-rich gas can be filled with to fuel tank, oxygen content in fuel tank is reduced, filling
During entering nitrogen, oxygen concentration sensor monitors oxygen concentration in fuel tank in real time to be changed, and automatic control device carries out gas
Flow-rate adjustment generates required inert gas, is at incombustible state, achievees the purpose that fire-proof and explosion-proof；The present apparatus
It can carry out automatically controlling, and inerting is efficient, less energy consumption.
Description of the drawings
Fig. 1 is that a kind of auto-pressurizing of supercharging nitrogen fuel tank inerting system processed of the utility model detaches air douche fuel tanker
The system diagram of deoxygenation；
Fig. 2 is a kind of supercharging nitrogen fuel tank inerting system processed of the utility model using the washing fuel tanker deoxygenation of gas huge rock
System diagram；
Fig. 3 is that a kind of gas huge rock of supercharging nitrogen fuel tank inerting system processed of the utility model combines deoxygenation with turbo-expander
System diagram；
Fig. 4 is a kind of being removed using washing injector washing fuel tanker for supercharging nitrogen fuel tank inerting system processed of the utility model
The system diagram of oxygen.
Wherein, 1- turbo-expanders, 2- compressors, the first coolers of 3-, 4- separators, 5- temperature sensors, 6-
One flow control valve, 7- hollow-fibre membranes, 8- metering holes, 9- second flow regulating valves, 10- oxygen concentration sensors, 11- fuel tanks,
101- shut-off valves, 102- filters, 103- air dryers, the second coolers of 104-, the first triple valves of 105-, 106- controls
Device, 107- turbo-expanders, the second triple valves of 201-, 202- wind turbines, 203- gas huge rocks, 204- oil pumps, 205- wash injector.
Specific implementation mode
The utility model is further described with reference to embodiment.As described below is only that the utility model 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 the every other embodiment that is obtained, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, the auto-pressurizing separation air douche that Fig. 1 is the utility model supercharging nitrogen fuel tank inerting system processed flies
The system of sump deoxygenation, the system include the first cooler 3, separator 4, temperature sensor 5, first flow regulating valve 6,
Hollow-fibre membrane 7, second flow regulating valve 9, oxygen concentration sensor 10, fuel tank 11,101 second cooler 104, first of shut-off valve
Triple valve 105, controller 106, the second triple valve 201, wind turbine 202.Wherein the first cooler 3 and the second cooler 104 are equipped with heat
Wing passage and cold side channel, separator 4 are equipped with gas passage and liquid aquaporin, and hollow-fibre membrane 7 is equipped with gas access, nitrogen
Gas exports and oxygen outlet, has filter successively by pipeline connection between the outlet of shut-off valve 101 and 105 entrance of the first triple valve
102, air dryer 103,104 hot-side channel of the second cooler, 105 first outlet of the first triple valve and 11 gas access of fuel tank
Between by pipeline connection have compressor 2,3 hot-side channel of the first cooler, 4 gas passage of separator, temperature sensing successively
Device 5, first flow regulating valve 6,7 gas access of hollow-fibre membrane and nitrogen outlet, second flow regulating valve 9,11 gas of fuel tank
Entrance.Turbo-expander is connected with by pipeline between 201 second entrance of first triple valve, 105 second outlet and the second triple valve
1,101 entrance of shut-off valve is passed through engine bleed, and 104 cold side channel of the second cooler is passed through ram-air, turbo-expander 1 with
Coupled by connecting rod between the compressor 2, the outlet of wind turbine 202 is connected by pipeline and 201 first entrance of the second triple valve
It connects, the outlet of the second triple valve 201 is connected with 3 cold side channel of the first cooler, and 7 oxygen outlet of hollow-fibre membrane passes through
Pipeline is connected to cockpit, and 8 gas access of metering hole is connect with 7 nitrogen outlet of hollow-fibre membrane by pipeline, and 8 gas of metering hole goes out
It mouthful is connect by pipeline with 11 gas access of fuel tank, the outlet of 3 cold side channel of the first cooler, 4 aquaporin of separator export, the
The outlet of two coolers, 104 cold side channel is communicated with air respectively, and oxygen concentration sensing 10 is connect by popping one's head in fuel tank 11, and temperature passes
Sensor 5 is connect by cable with 106 input terminal of controller with 10 signal output end of oxygen concentration sensor, shut-off valve 101 the one or three
Port valve 105, the second triple valve 201, first flow regulating valve 6, second flow regulating valve 9 are exported with the controller 106 respectively
End passes through cable connection.
The working method of the supercharging nitrogen fuel tank inerting system processed of the utility model, detailed process are as follows：
1）When oxygen concentration sensor 10 detects that 11 upper gaseous phase oxygen concentration of fuel tank reaches the signal transmission of Flammability limits
To controller 106, fuel tank deaerating type of cycles is started to work, and controller is according to the monitoring of temperature sensor 5 and oxygen concentration sensor 10
Value adjusts shut-off valve 101, the first triple valve 105, the second triple valve 201, first flow regulating valve 6, second flow and adjusts in real time
The aperture of valve 9 changes the engine bleed amount of 11 deaerating type of cycles of fuel tank, and deaerating type of cycles generates suitable inert gas, to fuel tank
11 carry out deoxygenation, reduce by 11 gas-phase space oxygen concentration of fuel tank；
2）For fuel tank 11 after deoxygenation after a period of time, oxygen concentration sensor 10 detects that 11 upper gaseous phase space oxygen of fuel tank is dense
Degree closes 101 air inlet of shut-off valve less than oxygen concentration needed for burning, the automatic adjustment of controller 106, and deaerating type of cycles does not generate inertia
Gas, deaerating type of cycles are stopped.
Embodiment 2
As shown in Fig. 2, Fig. 2 is the system diagram that fuel tanker deoxygenation is washed using gas huge rock of utility model device, this
9 gas vent of second flow regulating valve is connect with 203 gas access of gas huge rock by pipeline in embodiment, and gas huge rock 203 is installed
In 11 bottom of fuel tank.And gas huge rock 203 is installed on the fluid bottom of fuel tank 11；The gas huge rock is by diamantane, carborundum energy mistake
High temperature sintering forms.
The present embodiment difference from example 1 is that, the gas left from 7 nitrogen outlet of hollow-fibre membrane no longer into
Enter 11 upper gas entrance of fuel tank but enters 203 gas access of gas huge rock and generate a large amount of tiny bubbles in gas huge rock 203
Fuel oil is washed, the replacement of oxygen in fuel oil is come out, oxygen concentration is reduced, achievees the purpose that fuel tank deoxygenation.
Embodiment 3
Fig. 3 is that a kind of gas huge rock of supercharging nitrogen fuel tank inerting system processed of the utility model combines deoxygenation with turbo-expander
System diagram, the present embodiment increase the system diagram of the fuel tanker deoxygenation of turbo-expander 107, the present embodiment in example 2
Turbo-expander 107 is connected with by pipeline between 7 nitrogen outlet of middle hollow-fibre membrane and second flow regulating valve 9, turbine is swollen
Swollen machine 107 is connect with compressor 2 by connecting rod.
Embodiment 3 and the difference of embodiment 1 and embodiment 2 is, the high pressure nitrogen that 7 nitrogen outlet of hollow-fibre membrane generates
It first passes through after turbo-expander 107 expands decrease temperature and pressure and enters back into second flow regulating valve 9, while high pressure nitrogen is swollen by turbine
Swollen machine 107, which generates power, can drive compressor 2 to carry out gas compression, improve capacity usage ratio.
Embodiment 4
Fig. 4 is to utilize to wash the system diagram that injector 205 washs fuel tanker deoxygenation in the utility model, in the present embodiment
11 outlet at bottom of fuel tank is connected with oil pump 204 between washing 205 fuel filler of injector by pipeline, washs injector 205
At 10 bottom minimum level of fuel tank, the outlet of second flow regulating valve 9 is connect with 205 gas access of washing injector for outlet.
The present embodiment with above-mentioned three kinds implement the difference is that, from second flow regulating valve 9 come out gas it is advanced
Enter to wash 205 gas access of injector, the fuel oil being pumped into oil pump 204 is mixed, displaced in fuel oil in the process
Oxygen, and mixed with other fuel oils in washing process, the oxygen concentration in other fuel oils is further decreased, washing deoxygenation is reached
Purpose.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
It for art personnel, can also make several improvements without departing from the principle of this utility model, these improvement also should be regarded as
The scope of protection of the utility model.
Claims (9)
1. a kind of supercharging nitrogen fuel tank inerting system processed, which is characterized in that the device passes through pipeline by engine bleed part
It is connected with shut-off valve in turn（101）, filter（102）, air dryer（103）, the second cooler（104）, the first triple valve
（105）；
First triple valve（105）Outlet is divided into two branch way outlets；
First triple valve（105）First outlet is sequentially connected compressor by pipeline（2）, the first cooler（3）Hot side
Channel, separator（4）Gas passage, temperature sensor（5）, first flow regulating valve（6）, hollow-fibre membrane（7）Gas
Entrance, second flow regulating valve（9）, fuel tank（11）；The hollow-fibre membrane（7）Nitrogen outlet be sequentially connected by pipeline
In metering hole（8）, fuel tank（11）；The hollow-fibre membrane（7）Oxygen outlet is connected to by pipeline with cockpit；
First triple valve（105）Second outlet is sequentially connected turbo-expander by pipeline（1）, the second triple valve
（201）, the first cooler（3）Cold side channel；Second triple valve（201）It is also associated with wind turbine（202）；
The turbo-expander（1）Pass through connecting rod and compressor（2）Connection；
Further include controller in the device（106）；
The controller（106）Including two input terminals and four output ends；
The temperature sensor（5）With oxygen concentration sensor（10）Signal output end passes through cable and controller respectively
（106）Input terminal connects；
The shut-off valve（101）, the first triple valve（105）, the second triple valve（201）, first flow regulating valve（6）, second
Adjustable valve（9）Pass through cable and controller respectively（106）Output end connects.
2. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that the second flow tune
Save valve（9）It is connected to fuel tank（11）Middle part.
3. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that the second flow tune
Save valve（9）Gas huge rock can also be passed through（203）It is connected to fuel tank（11）；And the gas huge rock（203）It is installed on fuel tank（11）
Bottom.
4. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that the second flow tune
Save valve（9）It can also be by washing injector（205）Gas access be connected to fuel tank（11）；And the washing injector
（205）Positioned at fuel tank（11）Under the minimum level of bottom；The fuel tank（11）Fuel outlet is to washing injector（205）Fuel oil enters
Oil pump is connected with by pipeline between mouthful（204）；205 gas access of washing injector by pipeline respectively with second flow
Regulating valve（9）Gas vent, metering hole（8）Outlet connection.
5. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that the hollow-fibre membrane
（7）Nitrogen outlet and the second flow regulating valve（9）Turbo-expander is connected with by pipeline between entrance（107）；Institute
The turbo-expander stated（107）With compressor（2）It is connected by connecting rod.
6. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that the controller
（106）Pass through oxygen concentration sensor（10）It is connected to fuel tank（11）；The oxygen concentration sensor（10）Pass through probe and fuel tank
（11）Hollow, upper connection.
7. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that first cooler
（3）Cold side channel outlet, separator（4）Aquaporin outlet, the second cooler（104）Cold side channel outlet respectively with big gas phase
It is logical.
8. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that second cooler
（104）Cold side channel is passed through ram-air.
9. a kind of supercharging nitrogen fuel tank inerting system processed according to claim 1, which is characterized in that the separator
（4）The equipment for removing vapor in gas for cooled；The hollow-fibre membrane（7）For polyethylene film, polypropylene screen, poly- four
Fluoride film, polyvinylidene fluoride film, PS membrane or smelling polyphenylene oxide film；The air dryer（103）Used absorption
Material is molecular sieve, silica gel or lithium chloride.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721786196.7U CN207748032U (en) | 2017-12-20 | 2017-12-20 | A kind of supercharging nitrogen fuel tank inerting system processed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721786196.7U CN207748032U (en) | 2017-12-20 | 2017-12-20 | A kind of supercharging nitrogen fuel tank inerting system processed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107954001A (en) * | 2017-12-20 | 2018-04-24 | 南京航空航天大学 | One kind is pressurized nitrogen fuel tank inerting system processed and its method of work |
| CN109441637A (en) * | 2018-09-03 | 2019-03-08 | 北京航空航天大学 | A kind of aircraft using nitrogen supercharging fuel tank is had more than needed electric integrated system and method |
| CN111153389A (en) * | 2020-01-06 | 2020-05-15 | 南京航空航天大学 | Airborne nitrogen generation system combining gas flushing and membrane separation technology and working method |
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2017
- 2017-12-20 CN CN201721786196.7U patent/CN207748032U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107954001A (en) * | 2017-12-20 | 2018-04-24 | 南京航空航天大学 | One kind is pressurized nitrogen fuel tank inerting system processed and its method of work |
| CN107954001B (en) * | 2017-12-20 | 2023-07-25 | 南京航空航天大学 | Fireproof device of pressurized nitrogen-making oil tank and working method thereof |
| CN109441637A (en) * | 2018-09-03 | 2019-03-08 | 北京航空航天大学 | A kind of aircraft using nitrogen supercharging fuel tank is had more than needed electric integrated system and method |
| CN109441637B (en) * | 2018-09-03 | 2020-07-24 | 北京航空航天大学 | Airplane surplus power integrated system and method for pressurizing oil tank by using nitrogen |
| CN111153389A (en) * | 2020-01-06 | 2020-05-15 | 南京航空航天大学 | Airborne nitrogen generation system combining gas flushing and membrane separation technology and working method |
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