CN101708776A - Inert system for civil airplane - Google Patents
Inert system for civil airplane Download PDFInfo
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- CN101708776A CN101708776A CN200910216537A CN200910216537A CN101708776A CN 101708776 A CN101708776 A CN 101708776A CN 200910216537 A CN200910216537 A CN 200910216537A CN 200910216537 A CN200910216537 A CN 200910216537A CN 101708776 A CN101708776 A CN 101708776A
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Abstract
The invention discloses an inert system for a civil airplane, relates to a composite-film separated nitrogen making system, and belongs to the field of aviation industry machining building. The inert system for the civil airplane comprises an air pre-treating system, a gas film separating system and an automatic control system, wherein compressed air is output from the air pre-treating system and the gas film separating system under the control of the automatic control system; high-temperature compressed gas produced by an engine compressor of the airplane passes through a supply pipeline and the air pre-treating system to supply compressed air to the gas film separating system; cold air produced by an external duct of the airplane engine passes through a fan supply pipeline to supply cold air for refrigeration to the air pre-treating system; and the gas film separating system consists of a plurality of composite-film pipe components with the same or different separation coefficients and the optimum working temperatures which are connected through manifolds, and outputs and distributes nitrogen gas to each fuel tank of the airplane through parallelly connected pneumatic or electric variable-flow valves and a low-flow hole.
Description
Technical field
The present invention relates to a kind of airborne inert system that is used for seating plane, relate in particular to a kind of complex film and separate nitrogen gas generating system, belong to the aircraft industry mechanical manufacturing field.
Background technology
Nitrogen is a kind of unreactable gas, can be widely used in various is the commercial unit operational process of main purpose with the oxygen barrier, owing to contain 78 percent the nitrogen of having an appointment in the air, so, by to compressed-air actuated separation nitrogen being convenient to by enrichment, various nitrogen manufacturing systems have also appearred thereupon.Show according to statistics helicopter or aircraft fire accident, fuel oil catches fire or explodes is the most serious problem, it is generally acknowledged, possessed two factors that cause flame to take place when fuel vapour in the fuel tank of closed region and air-blending, be under the situation of 12%-22% electrical equipment to take place when airborne level of oxygen, thunder and lightning, the static igniting just has the danger of ignition blast.The breakthrough of air separation technology is for oil tank anti-explosion provides new way. and the on-board inert gas based on sky branch technology produces system (OBIGGS), is raw material with the air, directly produces a large amount of nitrogen-rich airs, and the inerting fuel tank has the datonation-inhibition effect of actv..There have been various OBIGGS at present, but they exist following defective: volume is big, weight is big, the nitrogen gas generating system complexity, nitrogen producing craft is discontinuous, the fault high reliability is low at these defectives, the inventor is the basis of 200710049344.1 Chinese patent " complex film that is used for drilling technology separates nitrogen gas generating system and film separation and nitrogen-making method " in the application number of 2007-06-20 application at me, through further deep research experiment, drawn the airborne inert system of the seating plane that addresses the aforementioned drawbacks.
Summary of the invention
At the problem that above-mentioned prior art exists, the object of the invention is to provide a kind of inert system that is used for seating plane, and its volume is little in light weight, nitrogen gas generating system is simple, can make nitrogen continuously, the reliability height satisfies the demand to the low-cost high security of various seating planes.
Technical scheme of the present invention is: a kind of inert system that is used for seating plane, comprise air pretreatment system, gas film piece-rate system and autonomous cruise speed system, under the control of autonomous cruise speed system, pressurized air is through air pretreatment system, the output of gas film piece-rate system; Described air pretreatment system is formed by connecting by cold and hot flexible tracheae and Aviation Connector successively by compressed air inlet pipe, H Exch, high-altitude deozonize device, air filter group and airheater; Described autonomous cruise speed system is carried out electric system by programmable automatic control system and control and is formed, the high temperature compressed gas that the aero-engine compressor produces provides pressurized air through supply line for described compressed air inlet pipe, and the cold air that the aero-engine by-pass air duct produces provides cooling cold air through the blower fan supply line for described H Exch; Described gas film piece-rate system is connected to form by manifold by the compound film tube assembly of a plurality of identical or different detached coefficients, optimum working temperature, and exports nitrogen to aircraft fuel tank by variable flow valve in parallel and low discharge orifice.
Wherein, described programmable automatic control system is controlled each variable in the gas film piece-rate system, and its controlled variable is: the pressurized air gaseous tension of the air inlet end of described gas film piece-rate system is 30～80psig; By the state of flight difference,, control its flow and pressure by programmable automatic control system with nitrogen amount difference.Control by programmable automatic control system, it is qualified that the finished product nitrogen Control for Oxygen Content of outlet side is considered as at 5%～12% of cumulative volume, obtain the nitrogen of 88%-95% purity by the nitrogen gas purity control system, its principle is: by finished product gas sample detecting branch road, by the oxygen inspection online detection oxygen content gas of probe and by the online demonstration oxygen content gas of oxygen analyzer, by the pressure of programmable automatic control system to the film intake air, flow is regulated, the purity control cock of film outlet nitrogen is regulated, make the film group obtain rational difference of pressure and control the oxygen content of finished product nitrogen gas, the product nitrogen amount of the outlet side of described gas film piece-rate system is regulated by programmable automatic control system, level of oxygen with emptying, does not allow to enter fuel tank greater than 12% below proof nitrogen.
The invention has the beneficial effects as follows: utilize volume little in light weight, empty component efficiency height, high temperature resistant, humidity, resistant to pollution hollow fiber composite membrane, and fully integrate and utilize aircraft existing equipment and gas source channel, realized that fault rate is extremely low, reliability is high, separation of nitrogen from air continuously, and this controlled nitrogen enters more than the liquid level of fuel tanker, replaced oxygen-enriched air, suppress fuel tank blast on fire, improved flight safety, especially be fit to the flight demand of the low-cost high security of various model passenger planes, transport plane and helicopter.
Description of drawings
Fig. 1 is the system chart of the embodiment of the invention.
The specific embodiment
As one embodiment of the present invention, as shown in Figure 1, a kind of inert system that is used for seating plane, comprise air pretreatment system, gas film piece-rate system and autonomous cruise speed system, under the control of autonomous cruise speed system, pressurized air is through air pretreatment system, the output of gas film piece-rate system, and all devices all places in the prying body; Described air pretreatment system is formed by connecting by cold and hot flexible tracheae and Aviation Connector successively by compressed air inlet pipe 2, H Exch 6, high-altitude deozonize device 29, air filter group 7 and airheater 10; Described autonomous cruise speed system is carried out electric system by programmable automatic control system and control and is formed, the high temperature compressed gas that aero-engine compressor 1 produces provides pressurized air through supply line for described compressed air inlet pipe 2, and the cold air that aero-engine by-pass air duct 5 produces provides cooling cold air through the blower fan supply line for described H Exch 6; Described gas film piece-rate system is connected to form by manifold by the compound film tube assembly 14 of a plurality of identical or different detached coefficients, optimum working temperature, and the variable flow valve 23 and the low discharge orifice 24 that pass through parallel connection are exported nitrogen to aircraft fuel tank 30, variable flow valve 23 in parallel and low discharge orifice 24 correspond respectively under the different flying conditions flowrate variation requirement to nitrogen, as using high stream mode in take off acceleration phase and fall-retarding stage, it is by variable flow valve 23 output nitrogen, as use low stream mode in cruising phase, by low discharge orifice 24 output nitrogen.Wherein, described programmable automatic control system is controlled each variable in the gas film piece-rate system, and its controlled variable is: the gaseous tension of the air inlet end of described gas film piece-rate system is that compression indicator 8 shown pressure are 30～80psig; Control by programmable automatic control system, it is qualified that the finished product nitrogen Control for Oxygen Content of outlet side is considered as at 5%～12% of cumulative volume, obtain the nitrogen of 88%-95% purity by the nitrogen gas purity control system, its principle is: by finished product gas sample detecting branch road, by oxygen inspection probe 31 online detection oxygen content gas and by the online demonstration oxygen content gas of oxygen analyzer, by the pressure of programmable automatic control system to the film intake air, flow is regulated, the purity control cock of film outlet nitrogen is regulated, make the film group obtain rational difference of pressure and control the oxygen content of finished product nitrogen gas, the product nitrogen amount of the outlet side of described gas film piece-rate system is regulated by programmable automatic control system, use the nitrogen amount so that adapt to aircraft when different flight state, nonconformity nitrogen is controlled emptying by nonconformity nitrogen atmospheric valve 27.
All devices all is fixedly installed in the prying body, effective reduced volume not only, and connect firmly between each parts, and be convenient to connect the source of the gas of existing various aircrafts, power supply and control system, control stably shows nitrogen gas purity and system nitrogen process data; The air pretreatment system can be with the dust in the pressurized air, impurity, and ozone and moisture are removed clean, and air is reached be adapted to the optimal separation temperature of complex film, to improve the output and the purity of nitrogen; Compound film tube assembly in the gas film piece-rate system has advantages such as working temperature range is big, fastness to water is strong, fuel resistance is strong, resistance tocrocking is strong, can safeguard, these advantages are that the homogeneous membrane pipe module on the present market is not available; Programmable automatic control system is the PLC controller, is a kind of general-duty autonomous cruise speed system, can carry out automatic guidance by the design-calculated predetermined value to variablees such as the temperature in the gas film piece-rate system, pressure, nitrogen gas purities.
As the optimum structure of the film separation and nitrogen-making system among the present invention, described air filter group 7 is: coarse filtration air filter, middle air filtering filter, fine filtering air filter and ultra-fine air filtering filter serial in order link to each other.This multistage filter can thoroughly be removed dust and the impurity in the pressurized air, and the difficult obstruction of filter, can reduce wash number.
In described prying body, be equipped with airheater 10 is carried out temperature controlled temperature controller 11.The same with temperature control mode commonly used, the induction end of temperature controller 11 is installed on the gas outlet end of airheater 10, the control end of temperature controller 11 is connected with the relay switch of airheater 10, when the air themperature of the gas outlet end of airheater 10 is lower than design temperature, airheater 10 work; When the air themperature of the gas outlet end of airheater 10 was higher than design temperature, airheater 10 quit work.The air themperature of the gas outlet end of airheater 10 just can keep more stable like this, helps nitrogen separation.
Air pressure safety governor 9 is installed in described prying body, the pressure detector of air pressure safety governor 9 is installed on the tracheae between air filter group 7 and the airheater 10, and the control end of air pressure safety governor 9 is connected with airheater 10.There is not air admission when system's running; or air admission is arranged but pressure during less than a certain setting value; airheater 10 can be under the effect of air pressure safety governor 9 SELF CL, thereby protective film group and airheater 10 make that the film pipe is stable, trouble free service and being without prejudice.
Between described gas film piece-rate system and nitrogen storage gas tank 22, the nitrogen gas purity control system is installed.The groundwork of nitrogen gas purity control system is by product gas sample detecting branch road, detect oxygen content gas and show oxygen content gas (promptly feeding back purity of product gas) at that time by oxygen inspection probe 31 on-line continuous, make the film group obtain rational difference of pressure and the purity of adjustments of gas by regulating the purity control cock by oxygen analyzer.
Port at described compressed air inlet pipe 2 and nitrogen freeing pipe 25 all is equipped with quick coupling, quick coupling is connected with prying body by bracing means, quick coupling is the best with the cassette joint, can stretch or shrink by the line of centers of pleasant pipe in the very big environment of the temperature difference, does not leak gas simultaneously.
In practical work process, the pressurized air that aero-engine compressor 1 produces enters by the compressed air inlet pipe 2 of supply line from the air pretreatment system, then by H Exch 6, and the cold air that is produced by aero-engine by-pass air duct 5 provides cooling cold air through the blower fan supply line for described H Exch 6, carry out entering high-altitude deozonize device 29 after the cooled dehydrated, enter air filter group 7 after removing ozone, air filter group 7 can be with the dust in the pressurized air, contaminant removal is clean, this helps protecting compound film tube, clean pressurized air is sent to the gas film piece-rate system after being heated to uniform temperature (being the best with 80--82 degree centigrade generally) through airheater 10, described gas film piece-rate system is by a plurality of identical or different detached coefficients, the compound film tube assembly 14 of optimum working temperature connects to form by manifold, compound film tube assembly 14 is hollow complex film bundles cylindraceous, every bundle has comprised up to a million hollow fibers, so that separating area to greatest extent to be provided, about tens microns of every fibre diameter, hairline as the people is thin, pressurized air is entered by an end of fibrous bundle, gas molecule under pressure, at first in the contact of the high pressure side of complex film, be absorption then, dissolving, diffusion, precipitation, overflow, the infiltration rate difference of every kind of gas, oxygen, carbon dioxide, the infiltration rate of aqueous vapor etc. is fast, ooze out to the low pressure outside by the inboard fibre wall of high pressure, be discharged in the outside air by the opening of compound film tube assembly 14 1 sides; " gas " that infiltration rate is little---nitrogen is enriched in the high pressure inboard, is expelled to nitrogen storage gas tank 22 by the other end of compound film tube assembly 14, thereby has realized that oxygen-nitrogen separates, and obtains nitrogen.As shown in Figure 1, outside air passes through successively with lower member after 1 compression of aero-engine compressor: compressed air inlet pipe 2, air diverter valve 3, heat indicator 4, H Exch 6, high-altitude deozonize device 29, air filter group 7, compression indicator 8, air pressure safety governor 9, airheater 10 (airheater 10 external temperature controllers 11), heat indicator 12, air pneumatic valve 13, compound film tube assembly 14, through the gas behind the compound film tube assembly 14 is the nitrogen that contains minor amounts of oxygen, this nitrogen passes through oxygen content sensor 15 more successively, temperature sensor 16, compression indicator 17, flow counter 18, flow control valve 19, back pressure valve 20, be separated into the master then, from two branch roads, main branch road is: nitrogen gas valve 21, nitrogen storage gas tank 22, variable flow valve 23 and low discharge orifice 24 in parallel, nitrogen freeing pipe 25, from branch road be: nonconformity nitrogen exhaust pipe 28, blowdown valve 26, nonconformity nitrogen atmospheric valve 27, general run of thins enters fuel tank 30 by main branch road, fuel tank 30 is provided with its interior oxygen content of oxygen inspection probe 31 monitoring in real time and feeds back programmable automatic control system the production and the input process of nitrogen-rich gas are controlled, and also is provided with the breathing valve 32 of balance external and internal pressure on the fuel tank 30; Pass through from branch road when needing decompression or discharging nonconformity nitrogen.
More than a kind of inert system that is used for seating plane provided by the present invention has been carried out detailed introduction, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.To change of the present invention and improvement will be possible, and can not exceed design and the scope that accessory claim can be stipulated.
Claims (2)
1. an inert system that is used for seating plane comprises air pretreatment system, gas film piece-rate system and autonomous cruise speed system, and under the control of autonomous cruise speed system, pressurized air is through air pretreatment system, the output of gas film piece-rate system; Described air pretreatment system is connected in sequence by compressed air inlet pipe, H Exch, air filter group and airheater; Described autonomous cruise speed system is carried out electric system by programmable automatic control system and control and is formed, it is characterized in that: the high temperature compressed gas that the aero-engine compressor produces provides pressurized air through supply line for described compressed air inlet pipe, and the cold air that the aero-engine by-pass air duct produces provides cooling cold air through the blower fan supply line for described H Exch; Also be connected with high-altitude deozonize device between described H Exch and the air filter group, be formed by connecting by cold and hot flexible tracheae and Aviation Connector between each device of air pretreatment system; Described gas film piece-rate system is connected to form by manifold by the compound film tube assembly of a plurality of identical or different detached coefficients, optimum working temperature, and by the pneumatic or electronic variable flow valve and the low discharge orifice of parallel connection nitrogen is delivered to aircraft fuel tank.
2. a kind of inert system that is used for seating plane according to claim 1, it is characterized in that: described programmable automatic control system is controlled each variable in the gas film piece-rate system, and its controlled variable is: the gaseous tension of the air inlet end of described gas film piece-rate system is 30～80psig; Control by programmable automatic control system, it is qualified that the finished product nitrogen Control for Oxygen Content of outlet side is considered as at 5%～12% of cumulative volume, obtain the nitrogen of 88%-95% purity by the nitrogen gas purity control system, its principle is: by finished product gas sample detecting branch road, by the oxygen inspection online detection oxygen content gas of probe and by the online demonstration oxygen content gas of oxygen analyzer, by the pressure of programmable automatic control system to the film intake air, flow is regulated, the purity control cock of film outlet nitrogen is regulated, make the film group obtain rational difference of pressure and control the oxygen content of finished product nitrogen gas, the product nitrogen amount of the outlet side of described gas film piece-rate system is regulated by programmable automatic control system, and level of oxygen will be by the emptying of nonconformity nitrogen atmospheric valve greater than 12% below proof nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910216537A CN101708776A (en) | 2009-12-04 | 2009-12-04 | Inert system for civil airplane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910216537A CN101708776A (en) | 2009-12-04 | 2009-12-04 | Inert system for civil airplane |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891017A (en) * | 2010-07-20 | 2010-11-24 | 中国航空工业集团公司西安飞机设计研究所 | Fuel-tank inert gas control device |
| CN102269331A (en) * | 2011-07-27 | 2011-12-07 | 中国船舶重工集团公司第七二二研究所 | Pneumatic circuit safety control system |
| CN102755870A (en) * | 2012-04-06 | 2012-10-31 | 南京航空航天大学 | Double-flow-mode fuel oil ground pre-washing method and device thereof |
| CN103323219A (en) * | 2012-03-21 | 2013-09-25 | 北京航空航天大学 | Onboard fuel tank deactivation overall performance testing system |
| CN104520194A (en) * | 2012-08-24 | 2015-04-15 | 波音公司 | Aircraft fuel tank flammability reduction method and system |
| CN105107103A (en) * | 2015-09-21 | 2015-12-02 | 威特龙消防安全集团股份公司 | Integrated nitrogen injection oxygen control fire protection device |
| CN106741984A (en) * | 2017-01-03 | 2017-05-31 | 南京航空航天大学 | A kind of system and its method of work of catalytic reforming inerting aircraft fuel tank |
| CN107031851A (en) * | 2015-09-25 | 2017-08-11 | 波音公司 | Nitrogen is generated and oxygen distribution system and the method for distribution oxygen-enriched air |
| US10000294B2 (en) | 2012-08-24 | 2018-06-19 | The Boeing Company | Aircraft fuel tank flammability reduction method and system |
| CN108190035A (en) * | 2017-12-15 | 2018-06-22 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of Inerting Aircraft Fuel Tanks device |
| CN108584877A (en) * | 2018-06-06 | 2018-09-28 | 南京航空航天大学 | A kind of airborne oxygen-nitrogen gas generating system processed of combination mangneto separation and membrane separation technique |
| CN110092002A (en) * | 2018-01-30 | 2019-08-06 | 哈米尔顿森德斯特兰德公司 | The fuel tank of aircraft is catalyzed inerting equipment |
| CN111367211A (en) * | 2020-03-19 | 2020-07-03 | 南京航空航天大学 | Unmanned aerial vehicle environmental control system |
| CN113968347A (en) * | 2021-10-13 | 2022-01-25 | 安徽建筑大学 | Air supply system for airborne membrane method nitrogen production |
| RU2783848C1 (en) * | 2022-05-17 | 2022-11-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" | System for safe operation of tank farms |
-
2009
- 2009-12-04 CN CN200910216537A patent/CN101708776A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891017B (en) * | 2010-07-20 | 2013-04-10 | 中国航空工业集团公司西安飞机设计研究所 | Fuel-tank inert gas control device |
| CN101891017A (en) * | 2010-07-20 | 2010-11-24 | 中国航空工业集团公司西安飞机设计研究所 | Fuel-tank inert gas control device |
| CN102269331A (en) * | 2011-07-27 | 2011-12-07 | 中国船舶重工集团公司第七二二研究所 | Pneumatic circuit safety control system |
| CN103323219B (en) * | 2012-03-21 | 2017-02-08 | 北京航空航天大学 | Onboard fuel tank deactivation overall performance testing system |
| CN103323219A (en) * | 2012-03-21 | 2013-09-25 | 北京航空航天大学 | Onboard fuel tank deactivation overall performance testing system |
| CN102755870B (en) * | 2012-04-06 | 2014-12-10 | 南京航空航天大学 | Double-flow-mode fuel oil ground pre-washing method and device thereof |
| CN102755870A (en) * | 2012-04-06 | 2012-10-31 | 南京航空航天大学 | Double-flow-mode fuel oil ground pre-washing method and device thereof |
| CN104520194A (en) * | 2012-08-24 | 2015-04-15 | 波音公司 | Aircraft fuel tank flammability reduction method and system |
| CN104520194B (en) * | 2012-08-24 | 2016-01-13 | 波音公司 | Aircraft fuel tank comb. reduces method and system |
| US10000294B2 (en) | 2012-08-24 | 2018-06-19 | The Boeing Company | Aircraft fuel tank flammability reduction method and system |
| CN105107103A (en) * | 2015-09-21 | 2015-12-02 | 威特龙消防安全集团股份公司 | Integrated nitrogen injection oxygen control fire protection device |
| CN105107103B (en) * | 2015-09-21 | 2018-08-24 | 威特龙消防安全集团股份公司 | A kind of integrated form note nitrogen control oxygen firebreak device |
| CN107031851A (en) * | 2015-09-25 | 2017-08-11 | 波音公司 | Nitrogen is generated and oxygen distribution system and the method for distribution oxygen-enriched air |
| CN106741984A (en) * | 2017-01-03 | 2017-05-31 | 南京航空航天大学 | A kind of system and its method of work of catalytic reforming inerting aircraft fuel tank |
| CN108190035A (en) * | 2017-12-15 | 2018-06-22 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of Inerting Aircraft Fuel Tanks device |
| CN110092002A (en) * | 2018-01-30 | 2019-08-06 | 哈米尔顿森德斯特兰德公司 | The fuel tank of aircraft is catalyzed inerting equipment |
| CN108584877A (en) * | 2018-06-06 | 2018-09-28 | 南京航空航天大学 | A kind of airborne oxygen-nitrogen gas generating system processed of combination mangneto separation and membrane separation technique |
| CN111367211A (en) * | 2020-03-19 | 2020-07-03 | 南京航空航天大学 | Unmanned aerial vehicle environmental control system |
| CN113968347A (en) * | 2021-10-13 | 2022-01-25 | 安徽建筑大学 | Air supply system for airborne membrane method nitrogen production |
| RU2783848C1 (en) * | 2022-05-17 | 2022-11-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" | System for safe operation of tank farms |
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Application publication date: 20100519 |