CN103993961A - Fuel supply system for turbojet engine and turbojet engine - Google Patents
Fuel supply system for turbojet engine and turbojet engine Download PDFInfo
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- CN103993961A CN103993961A CN201410193852.7A CN201410193852A CN103993961A CN 103993961 A CN103993961 A CN 103993961A CN 201410193852 A CN201410193852 A CN 201410193852A CN 103993961 A CN103993961 A CN 103993961A
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- hydrogen peroxide
- turbojet engine
- firing chamber
- fuel supply
- storage device
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Abstract
The invention discloses a fuel supply system for a turbojet engine. The fuel supply system comprises a conventional fuel supply subsystem which contains a fuel oil storage device and a fuel oil delivery pipeline. The fuel oil storage device is controllably connected to a combustion chamber of a turbojet engine through the fuel oil delivery pipeline. The fuel supply system for the turbojet engine also comprises an auxiliary fuel supply subsystem which contains a hydrogen peroxide storage device and a hydrogen peroxide delivery pipeline. The hydrogen peroxide storage device is controllably connected to the combustion chamber of the turbojet engine through the hydrogen peroxide delivery pipeline. The invention also discloses the turbojet engine which is cooperatively used along with the fuel supply system for the turbojet engine. The fuel supply system is especially suitable for supplying fuel to a turbojet engine of a high-altitude aircraft such as a reconnaissance plane in a high altitude oxygen-deficient environment.
Description
Technical field
The present invention relates to the motor of aircraft, particularly relate to a kind of turbojet engine fuel system and turbojet engine.
Background technique
In society, various middle-size and small-size aircraft are all to bring into play considerable effect in military affairs or civil area.In military field, middle-size and small-size aircraft has good disguise, is particularly suitable as scout-attack weapon.At civil area, due to middle-size and small-size aircraft have advantages of simple in structure, cost is low, also have a wide range of applications at aspects such as meteorological observation, environment measuring, geodetic survey, disaster prevention and control.Turbojet engine is that a kind of dependence relies on gas flow completely and produces the motor of thrust, has that thrust weight ratio is high, cheap, energy density advantages of higher, is typically used as the Power Drive Unit of middle small aircraft.But, when aircraft is during in high-altitude flight, because altitude air is thin, oxygen content is low, easily cause fuel oil fully not burn, and then cause the outputting power of turbojet engine to reduce.
Summary of the invention
Main purpose of the present invention is for the deficiencies in the prior art, provide a kind of combustion efficiency high, control turbojet engine fuel system easily.
Another object is to provide a kind of turbojet engine being used in conjunction with this turbojet engine fuel system.
For achieving the above object, the present invention is by the following technical solutions:
A kind of turbojet engine fuel system, comprise conventional fuel supply subtense angle, described conventional fuel supply subtense angle comprises fuel oil storage device and fuel delivery line, described fuel oil storage device by described fuel pump deliver line can be handling be communicated to the firing chamber of turbojet engine, described turbojet engine fuel system also comprises auxiliary fuel supply subtense angle, described auxiliary fuel supply subtense angle comprises hydrogen peroxide storage device and hydrogen peroxide delivery line, described hydrogen peroxide storage device by described hydrogen peroxide delivery line can be handling be communicated to the firing chamber of described turbojet engine.
According to preferred embodiment, technological scheme of the present invention also may comprise following technical characteristicss:
Described hydrogen peroxide storage device comprises hydrogen peroxide holding vessel, described hydrogen peroxide holding vessel has filler and delivery outlet, safety valve, pressure transducer and liquid level sensor be equipped with on described hydrogen peroxide holding vessel,, described delivery outlet connects described hydrogen peroxide delivery line, on described hydrogen peroxide delivery line, be provided with stop valve and flow control valve, described safety valve, described pressure transducer, described liquid level sensor, described stop valve and the equal connection control unit of described flow control valve.Under the control of described control unit, can realize described hydrogen peroxide storage device by described hydrogen peroxide delivery line can be handling be communicated to the firing chamber of described turbojet engine.
Described auxiliary fuel supply subtense angle also comprises supercharging equipment, described hydrogen peroxide storage device has filler and boost port, described supercharging equipment can manipulate and be communicated to described boost port, after described hydrogen peroxide storage device has been annotated hydrogen peroxide, supercharging equipment is to supercharging in described hydrogen peroxide storage device described in described control unit control.
Described supercharging equipment comprises nitrogen supply (NS) device.
Described boost port and described filler are a common entrance.
Described hydrogen peroxide delivery line comprises the waveform pipe (also can be described as coiler) that is positioned at described firing chamber.
Described hydrogen peroxide delivery line is branched off into two-way or multichannel more entering before described firing chamber by its main line, each road has described waveform pipe separately, for making hydrogen peroxide decompose the high-temperature gas mixture that produces containing water vapor and oxygen in described waveform pipe, then spray from the described outlet by waveform pipe.
The hydrogen peroxide that described auxiliary fuel supply subtense angle delivery quality percent concentration is greater than 70%.
In described firing chamber, be provided with the oxygen sensor being connected with control unit, described oxygen sensor is in order to monitor the oxygen concentration in described firing chamber, in the time monitoring oxygen concentration in described firing chamber lower than predetermined value, auxiliary fuel supply subtense angle is to described firing chamber supply hydrogen peroxide described in described control unit control.
A kind of turbojet engine for being used in conjunction with described turbojet engine fuel system, comprise the conventional fuel receiving pipeline of firing chamber and the described firing chamber of connection, also comprise and be positioned at the hydrogen peroxide receiving pipeline that described firing chamber and outlet communicate with described firing chamber, described hydrogen peroxide receiving pipeline, for connecting the auxiliary fuel supply subtense angle of described turbojet engine fuel system, sprays from described outlet after decomposes in described hydrogen peroxide receiving pipeline from the hydrogen peroxide of described auxiliary fuel supply subtense angle.
According to preferred embodiment, described hydrogen peroxide receiving pipeline comprises waveform pipe.
Beneficial effect of the present invention:
The present invention is directed to the working condition of turbojet engine as high-altitude vehicle power plant, a kind of turbojet engine fuel system is proposed, it has the auxiliary fuel supply subtense angle of supply hydrogen peroxide as auxiliary fuels for engine, utilize the hot environment in firing chamber that hydrogen peroxide is heated to decomposition temperature, decompose the high-temperature gas mixture body being formed by water vapour oxygen generating, this high-temperature gas mixture contributes to fuel oil fully to burn, can overcome the oxygen supply deficiency that high aerial turbojet engine causes because of rarefaction of air, the drawback that makes fuel oil can not fully burn and then cause engine power to decline.Meanwhile, on the other hand, hydrogen peroxide decomposes the energy discharging can also effectively increase the power of motor.
Fuel system of the present invention utilizes the hot environment in turbojet engine firing chamber, and hydrogen peroxide is heated to decomposition temperature, can save expensive, baroque catalytic bed.
Research discovery, the hydrogen peroxide that adopts mass percent concentration to be greater than 70%, can obtain excellent auxiliaring effect.
This fuel system has the advantages such as outputting power is stable, cost is low, system architecture is simple, control is convenient, is especially suitable for use as the fuel system of the high-altitude vehicle turbojet engines such as reconnaissance plane.
In preferred embodiment, the temperature that can utilize fully in turbojet engine firing chamber that arranges of waveform pipe is heated to hydrogen peroxide to decompose temperature required, saves catalytic bed, reduces the cost of producing fuel system.
In preferred embodiment, auxiliary fuel supply subtense angle comprises supercharging equipment, after hydrogen peroxide storage device has been annotated hydrogen peroxide, by supercharging equipment for example, to supercharging (being filled with nitrogen with supercharging in hydrogen peroxide storage device) in hydrogen peroxide storage device, various losses when hydrogen peroxide flows in its pipeline when this measure can overcome work effectively, and there is hydrogen peroxide or its decomposition gas backflow phenomenon can prevent work time.
Brief description of the drawings
Fig. 1 is the embodiment's of turbojet engine fuel system of the present invention and turbojet engine structural representation.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are elaborated.Should be emphasized that, following explanation is only exemplary, instead of in order to limit the scope of the invention and to apply.
Consult Fig. 1, according to embodiments of the invention, turbojet engine fuel system comprises conventional fuel supply subtense angle and auxiliary fuel supply subtense angle, wherein, conventional fuel supply subtense angle comprises fuel oil storage device and fuel delivery line, fuel oil storage device by fuel pump deliver line can be handling be communicated to the firing chamber of turbojet engine 16, auxiliary fuel supply subtense angle comprises hydrogen peroxide storage device and hydrogen peroxide delivery line, hydrogen peroxide storage device by hydrogen peroxide delivery line can be handling be communicated to the firing chamber of turbojet engine 16.Those skilled in the art will readily understand, described can handlingly be can realize under as the control of ECU (Electrical Control Unit) (ECU) 5 at control unit, hydrogen peroxide storage device and hydrogen peroxide delivery line can be equipped with the actuator relevant to break-make, the adjustment of piping flow size etc. of the injection of storage device or release, pipeline, and these actuators are controlled unit controls.Should be understood that fuel system of the present invention has been not limited to comprise the system of this control unit.
In embodiments of the invention, preferably adopt high-strength hydrogen peroxide (high test peroxide is called for short HTP) as the hydrogen peroxide of auxiliary fuel.The mass percent concentration of HTP used is preferably greater than 70%.
In specific embodiment, this fuel system can be divided into the constituent element such as conventional fuel supply subtense angle, auxiliary fuel supply subtense angle, sensing detection and control subsystem.
As shown in Figure 1, preferably, conventional fuel supply subtense angle comprises the constituent elements such as fuel oil feeding port 10, fuel oil holding vessel 9, fuel transfer pump 7, fuel cut-off valve 6, fuel flow control system (FFCS) 12.In the time that oxygen concentration in turbojet engine 16 firing chambers is sufficient, provide fuel by conventional fuel supply subtense angle for turbojet engine 16.Fuel oil is divided into and in some road figure, only shows two-way and enter in turbojet engine 16 firing chambers through fuel cut-off valve 6, fuel transfer pump 7, fuel flow control system (FFCS) 12 by fuel oil holding vessel 9.Fuel oil after the interior evaporation atomization of vapourizer tube 15,18 with firing chamber in the abundant mixed combustion of air.The interior stored fuel oil of fuel oil holding vessel 9 is annotated by fuel oil feeding port 10.When conventional fuel supply system is normally worked, fuel cut-off valve 6 keeps normal open state, in the time of fuel up or maintenance conventional fuel supply system, closes fuel cut-off valve 6.
As shown in Figure 1, in a preferred embodiment, auxiliary fuel supply subtense angle comprises the constituent elements such as hydrogen peroxide filling/boost port 2, safety valve 3, hydrogen peroxide holding vessel 1, hydrogen peroxide stop valve 21, hydrogen peroxide flow control valve 20, waveform pipe 14,17 (coiler).In the time that in oxygen sensor 13,19 detection firing chambers, oxygen concentration is lower than the required oxygen concentration of fuel oil perfect combustion, 20 conductings of hydrogen peroxide flow control valve.In the waveform pipe 14,17 of HTP in hydrogen peroxide stop valve 21,20 points of two-way of hydrogen peroxide flow control valve enter the firing chamber of turbojet engine 16.HTP carries out sufficient exchange heat with the hot environment of firing chamber in waveform pipe 14,17, finally reaches HTP and decomposes temperature required.The high-temperature gas mixture being made up of water vapour and oxygen that HTP decomposition reaction produces is finally sprayed by the outlet of waveform pipe 14,17, HTP decompose the energy discharging can make up conventional fuel oil can not fully burn cause motor power decline, and HTP decomposes the high-temperature gas mixture body producing and has improved the oxygen concentration in turbojet engine firing chamber, contribute to the abundant burning of conventional fuel oil, improve combustion efficiency and increase engine power.The interior stored HTP of hydrogen peroxide holding vessel 1 is annotated by hydrogen peroxide filling/boost port 2.After hydrogen peroxide filling/boost port 2, be provided with safety valve 3.HTP is after filling completes, in hydrogen peroxide holding vessel, be filled with nitrogen supercharging by hydrogen peroxide fuel adding/boost port 2 by high-pressure nitrogen bottle, various losses when HTP flows in its pipeline when overcoming work, and there is HTP or its decomposition gas backflow phenomenon can prevent work time.When auxiliary fuel supply subtense angle is normally worked, hydrogen peroxide stop valve 21 keeps normal open state; In the time of filling HTP or maintenance auxiliary fuel supply system, close hydrogen peroxide stop valve 21.
As shown in Figure 1, in a preferred embodiment, sensing detection and control subsystem comprise the constituent elements such as fuel pressure transmitter 11, HTP pressure transducer 4, liquid level sensor 8,22, ECU (Electrical Control Unit) ECU5, lambda sensor 13,19.Pressure, HTP pressure transducer 4 that fuel pressure transmitter 11 is used for monitoring in fuel oil holding vessel 9 are used for monitoring the pressure in hydrogen peroxide holding vessel.As the pressure in fuel oil holding vessel 9 or hydrogen peroxide holding vessel 1 exceeds normal range (NR), ECU (Electrical Control Unit) ECU5 sends prompt messages.In fuel oil holding vessel 9 and hydrogen peroxide holding vessel 1, be respectively equipped with liquid level sensor 8,22, the content of monitoring fuel oil and HTP.When the content of fuel oil or HTP is during lower than lower limit, ECU (Electrical Control Unit) ECU5 sends prompt messages.In turbojet engine 16 firing chambers, be provided with lambda sensor 13,19, to monitor the oxygen concentration situation in firing chamber.If oxygen concentration is lower than fuel oil perfect combustion desired concn, ECU (Electrical Control Unit) ECU controls 20 conductings of HTP flow control valve, and HTP enters in turbojet engine 16 firing chambers as auxiliary fuel.
Consult Fig. 1, according to other embodiments of the present invention, a kind of turbojet engine 16 being used in conjunction with turbojet engine fuel system, comprise the conventional fuel receiving pipeline of shell, turbine, firing chamber, connection firing chamber, and be positioned at the hydrogen peroxide receiving pipeline that firing chamber and outlet communicate with firing chamber.Conventional fuel receiving pipeline can comprise fuel oil receiving tube and the vapourizer tube 15,18 being connected with fuel oil receiving tube.Hydrogen peroxide receiving pipeline is for connecting the auxiliary fuel supply subtense angle of turbojet engine fuel system, hydrogen peroxide from auxiliary fuel supply subtense angle is subject to after the pyrolysis in firing chamber in hydrogen peroxide receiving pipeline, and the high-temperature gas mixture of generation sprays from pipe outlet.According to preferred embodiment, hydrogen peroxide receiving pipeline comprises waveform pipe 14,17, and it acts on as mentioned before.Should understand, the auxiliary fuel supply subtense angle of mentioning in turbojet engine embodiment is also incomplete same with the subtense angle of the said auxiliary fuel supply of some specific embodiment above, the auxiliary fuel supply subtense angle of mentioning in turbojet engine embodiment does not comprise the parts that are fixedly mounted on turbojet engine 16 inside, these parts are the waveform pipe 14,17 in burner for example, is a part of regarding turbojet engine 16 as in the embodiment of turbojet engine.
Above content is in conjunction with concrete/preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; its mode of execution that can also describe these is made some substituting or modification, and these substitute or variant all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a turbojet engine fuel system, comprise conventional fuel supply subtense angle, described conventional fuel supply subtense angle comprises fuel oil storage device and fuel delivery line, described fuel oil storage device by described fuel pump deliver line can be handling be communicated to the firing chamber of turbojet engine, it is characterized in that, described turbojet engine fuel system also comprises auxiliary fuel supply subtense angle, described auxiliary fuel supply subtense angle comprises hydrogen peroxide storage device and hydrogen peroxide delivery line, described hydrogen peroxide storage device by described hydrogen peroxide delivery line can be handling be communicated to the firing chamber of described turbojet engine.
2. turbojet engine fuel system as claimed in claim 1, it is characterized in that, described hydrogen peroxide storage device comprises hydrogen peroxide holding vessel, described hydrogen peroxide holding vessel has filler and delivery outlet, safety valve is equipped with on described hydrogen peroxide holding vessel, pressure transducer and liquid level sensor, described delivery outlet connects described hydrogen peroxide delivery line, on described hydrogen peroxide delivery line, be provided with stop valve and flow control valve, described safety valve, described pressure transducer, described liquid level sensor, described stop valve and the equal connection control unit of described flow control valve.
3. turbojet engine fuel system as claimed in claim 1, it is characterized in that, described auxiliary fuel supply subtense angle also comprises supercharging equipment, described hydrogen peroxide storage device has filler and boost port, described supercharging equipment can manipulate and be communicated to described boost port, after described hydrogen peroxide storage device has been annotated hydrogen peroxide, described in described control unit control, supercharging equipment is to supercharging in described hydrogen peroxide storage device, preferably, described boost port and described filler are a common entrance.
4. turbojet engine fuel system as claimed in claim 3, is characterized in that, described supercharging equipment comprises nitrogen supply (NS) device.
5. the turbojet engine fuel system as described in claim 1 to 4 any one, is characterized in that, described hydrogen peroxide delivery line comprises the waveform pipe that is positioned at described firing chamber.
6. the turbojet engine fuel system as described in claim 5 any one, it is characterized in that, described hydrogen peroxide delivery line is branched off into two-way or multichannel more entering before described firing chamber by its main line, each road has described waveform pipe separately, for making hydrogen peroxide decompose the high-temperature gas mixture that produces containing water vapor and oxygen in described waveform pipe, then spray from the described outlet by waveform pipe.
7. the turbojet engine fuel system as described in claim 1 to 4 any one, is characterized in that, the hydrogen peroxide that described auxiliary fuel supply subtense angle delivery quality percent concentration is greater than 70%.
8. the turbojet engine fuel system as described in claim 1 to 4 any one, it is characterized in that, in described firing chamber, be provided with the oxygen sensor being connected with control unit, described oxygen sensor is in order to monitor the oxygen concentration in described firing chamber, in the time monitoring oxygen concentration in described firing chamber lower than predetermined value, auxiliary fuel supply subtense angle is to described firing chamber supply hydrogen peroxide described in described control unit control.
9. the turbojet engine for being used in conjunction with turbojet engine fuel system claimed in claim 1, comprise the conventional fuel receiving pipeline of firing chamber and the described firing chamber of connection, it is characterized in that, described turbojet engine also comprises and is positioned at the hydrogen peroxide receiving pipeline that described firing chamber and outlet communicate with described firing chamber, described hydrogen peroxide receiving pipeline is for connecting the auxiliary fuel supply subtense angle of described turbojet engine fuel system, hydrogen peroxide from described auxiliary fuel supply subtense angle sprays from described outlet after decomposes in described hydrogen peroxide receiving pipeline.
10. turbojet engine as claimed in claim 9, is characterized in that, described hydrogen peroxide receiving pipeline comprises waveform pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193852.7A CN103993961A (en) | 2014-05-08 | 2014-05-08 | Fuel supply system for turbojet engine and turbojet engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410193852.7A CN103993961A (en) | 2014-05-08 | 2014-05-08 | Fuel supply system for turbojet engine and turbojet engine |
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| Publication Number | Publication Date |
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| CN103993961A true CN103993961A (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410193852.7A Pending CN103993961A (en) | 2014-05-08 | 2014-05-08 | Fuel supply system for turbojet engine and turbojet engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111911315A (en) * | 2020-07-13 | 2020-11-10 | 潍坊联信增压器股份有限公司 | Small micro turbojet engine |
| CN113202631A (en) * | 2021-04-26 | 2021-08-03 | 于力 | Oxygen supplementing device for turbine shaft and turboprop engine and working method of oxygen supplementing device |
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| CN203835541U (en) * | 2014-05-08 | 2014-09-17 | 清华大学深圳研究生院 | Fuel supply system of turbojet engine and turbojet engine |
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Patent Citations (6)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111911315A (en) * | 2020-07-13 | 2020-11-10 | 潍坊联信增压器股份有限公司 | Small micro turbojet engine |
| CN113202631A (en) * | 2021-04-26 | 2021-08-03 | 于力 | Oxygen supplementing device for turbine shaft and turboprop engine and working method of oxygen supplementing device |
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Application publication date: 20140820 |