CN114017204A - Ramjet system using energy-containing slurry fuel - Google Patents
Ramjet system using energy-containing slurry fuel Download PDFInfo
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- CN114017204A CN114017204A CN202111304050.5A CN202111304050A CN114017204A CN 114017204 A CN114017204 A CN 114017204A CN 202111304050 A CN202111304050 A CN 202111304050A CN 114017204 A CN114017204 A CN 114017204A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
- F02K7/10—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
- F02K7/10—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof characterised by having ram-action compression, i.e. aero-thermo-dynamic-ducts or ram-jet engines
- F02K7/12—Injection-induction jet engines
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Abstract
The invention provides a ramjet system using energy-containing slurry fuel, and relates to the technical field of engines. The ramjet system using the energy-containing slurry fuel comprises an energy-containing slurry fuel supply device, a self-excited oscillation injector and a ramjet, wherein the energy-containing slurry fuel supply device comprises a fuel supply mechanism and a hydraulic supply mechanism, the fuel supply mechanism comprises a cylinder body assembly and a piston linkage assembly, a fuel cavity and a hydraulic cavity are arranged in the cylinder body assembly, the piston linkage assembly is movably arranged in the cylinder body assembly, the hydraulic supply mechanism is connected with the cylinder body assembly, the hydraulic supply mechanism is used for providing hydraulic oil with preset pressure for the hydraulic cavity, the piston linkage assembly is used for maintaining the pressure balance in the fuel cavity and the hydraulic cavity, the self-excited oscillation injector is arranged in the ramjet and is connected with the cylinder body assembly, and the self-excited oscillation injector is used for injection atomization. The ramjet system using the energy-containing slurry fuel provided by the invention has stable slurry fuel supply and reliable work.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a ramjet engine system using energy-containing slurry fuel.
Background
The rapid development of hypersonic and combined cycle power systems has placed greater density, higher heating value performance demands on traditional liquid hydrocarbon fuels. The energy-containing slurry fuel can be formed by adding high-energy solid particles such as aluminum, boron, magnesium and the like into the liquid hydrocarbon fuel, and is an important means for improving the energy density of the fuel. Through the extensive theoretical calculation, application feasibility research, single-drop combustion experiment and other works in the last century, the energy-containing slurry fuel is preliminarily verified to have extremely high application potential.
However, the energy-containing slurry fuel belongs to non-Newtonian fluid, has high viscosity, and cannot ensure stable supply and flow control of the fuel when the traditional extrusion type or pumping type liquid fuel supply system is adopted in a ramjet engine.
Disclosure of Invention
The application aims to provide a ramjet system applying energy-containing slurry fuel, which is used for solving the defects in the prior art.
In order to achieve the purpose, the application provides a ramjet system using energy-containing slurry fuel, which comprises an energy-containing slurry fuel supply device, a self-oscillation injector and a ramjet;
the energy-containing slurry fuel supply device comprises a fuel supply mechanism and a hydraulic supply mechanism, wherein the fuel supply mechanism comprises a cylinder body assembly and a piston linkage assembly, a fuel cavity and a hydraulic cavity are arranged in the cylinder body assembly, the piston linkage assembly is movably arranged in the cylinder body assembly, the hydraulic supply mechanism is connected with the cylinder body assembly, the hydraulic supply mechanism is used for providing hydraulic oil with preset pressure for the hydraulic cavity, and the piston linkage assembly is used for maintaining the pressure balance between the fuel cavity and the hydraulic cavity;
the self-oscillation injector is arranged on the ramjet and connected with the cylinder body assembly, and is used for injecting and atomizing the energy-containing slurry fuel in the fuel cavity into the ramjet.
In a possible embodiment, the fuel chamber and the hydraulic chamber have a uniform cross section in the radial direction.
In one possible embodiment, a partition plate is provided inside the cylinder block assembly, and the partition plate separates the fuel chamber and the hydraulic pressure chamber;
the piston linkage assembly comprises a piston rod and piston bodies located at two ends of the piston rod, the piston rod is in sliding fit with the partition plate, and the two piston bodies are located in the fuel cavity and the hydraulic cavity respectively.
In a possible embodiment, the self-oscillating injector comprises an injector body and a plurality of self-oscillating single nozzles, a fuel manifold is arranged in the injector body, the fuel manifold is communicated with the fuel chamber, the plurality of self-oscillating single nozzles are all arranged in the injector body, inlets of the self-oscillating single nozzles are communicated with the fuel manifold, and outlets of the self-oscillating single nozzles face to a combustion chamber of the ramjet engine.
In a possible embodiment, the self-oscillation single nozzle comprises a liquid inlet flow channel, an upper flow channel, a self-oscillation cavity and a lower flow channel which are communicated in sequence along the flowing direction of the energy-containing slurry fuel, wherein the diameters of the upper flow channel and the lower flow channel are smaller than that of the self-oscillation cavity, and the lower flow channel is communicated with an injection port of the self-oscillation single nozzle.
In one possible embodiment, the plurality of self-oscillating single nozzles are uniformly distributed on a cross section of the injection body in the width direction.
In a possible embodiment, the self-oscillating single nozzles on two adjacent rows are arranged offset in a cross section along the width direction of the injection body.
In one possible embodiment, a heat flux density sensor is arranged on an inner wall of a combustion chamber of the ramjet engine.
In a possible implementation manner, the ramjet engine sequentially comprises an isolation section and at least one combustion chamber section along an airflow direction, the self-oscillation injector is arranged in the combustion chamber section, a combustion chamber is formed in the combustion chamber section, and the width of the combustion chamber is gradually increased along the airflow direction.
In one possible embodiment, a combustion chamber is formed in the ramjet engine, the inner wall surface of the combustion chamber being provided with a cavity.
Compare in prior art, the beneficial effect of this application:
the application provides an use ramjet system that contains energy slurry fuel, including containing energy slurry fuel supply device, self-excited oscillation injector and ramjet, contain energy slurry fuel supply device including fuel supply mechanism and hydraulic pressure supply mechanism, fuel supply mechanism includes cylinder body subassembly and piston linkage subassembly, cylinder body subassembly inside is equipped with fuel chamber and hydraulic pressure chamber, piston linkage subassembly activity sets up in the cylinder body subassembly, hydraulic pressure supply mechanism connects the cylinder body subassembly, hydraulic pressure supply mechanism is used for providing the hydraulic oil of preset pressure to the hydraulic pressure chamber, piston linkage subassembly is used for maintaining the pressure balance in fuel chamber and the hydraulic pressure chamber, self-excited oscillation injector sets up in ramjet and is connected with the cylinder body subassembly, self-excited oscillation injector is used for the energy-containing slurry fuel in the fuel chamber to the injection atomizing in the ramjet. The ramjet system using the energy-containing slurry fuel provided by the application has the advantages that hydraulic oil with preset pressure is provided for the hydraulic cavity through the hydraulic supply mechanism, the piston linkage assembly can provide the same pressure for the fuel cavity in order to maintain the pressure balance between the fuel cavity and the hydraulic cavity, the fuel cavity can stably supply the energy-containing slurry fuel to the self-oscillation injector, the stability of injection atomization of the self-oscillation injector is improved, and the ramjet can stably burn and reliably work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 illustrates a schematic structural diagram of a ramjet system utilizing an energy-containing slurry fuel according to an embodiment of the present application;
FIG. 2 shows a schematic structural view of the energy-containing slurry fuel supply apparatus shown in FIG. 1;
FIG. 3 illustrates a cross-sectional view of a longitudinal cross-section of a self-oscillating injector in a ramjet engine system utilizing an energetic slurry fuel, according to an embodiment of the present application;
FIG. 4 shows an enlarged partial schematic view at A in FIG. 3;
FIG. 5 shows a view from the B direction in FIG. 3;
FIG. 6 shows a schematic structural diagram of the ramjet engine shown in FIG. 1;
FIG. 7 shows a cross-sectional view taken along line C-C of FIG. 6;
FIG. 8 shows a schematic structural diagram of another energy-containing slurry fuel supply apparatus provided by an embodiment of the present application;
FIG. 9 shows a typical operating profile of an energy-containing slurry fuel supply;
FIG. 10 shows a typical operating graph of a self-oscillating injector;
FIG. 11 is a graph showing typical measurements of wall heat flow from combustion of an energy-containing slurry fuel by a heat flow density sensor.
Description of the main element symbols:
100-an energy-containing slurry fuel supply; 110-a fuel supply; 111-cylinder assembly; 1110 — a first cylinder section; 1111-a second cylinder section; 1112-a separator; 112-a piston linkage assembly; 1120-a piston body; 1121-a piston rod; 113-a nozzle tip; 114-a fuel nozzle; 115-a fuel chamber; 1150-first rodless cavity; 1151-a first rod cavity; 116-a hydraulic chamber; 1160-second rodless cavity; 1161-a second rod cavity; 120-hydraulic supply means; 121-a hydraulic station; 122-a system controller; 200-self-oscillating injector; 210-an injector body; 211-a manifold chamber; 220-self-oscillating single nozzle; 221-a liquid inlet flow channel; 222-an upper flow channel; 223-a self-oscillating chamber; 224-lower flow channel; 225-spray injection port; 300-a ramjet engine; 310-an isolation section; 311-inner flow channel; 320-a combustion chamber section; 321-a combustion chamber; 322-a cavity; 400-heat flow density sensor.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
Referring to fig. 1, the present embodiment provides a ramjet system using energy-containing slurry fuel, and more particularly, to a direct-coupled ramjet system capable of realizing stable supply, efficient atomization, stable combustion, and reliable thermal protection of solid-containing slurry fuel.
Wherein, the energy-containing slurry fuel is formed by adding high-energy solid particles such as aluminum, boron, magnesium and the like into liquid hydrocarbon fuel, so that the energy density of the fuel can be improved. And the energy-containing slurry fuel belongs to non-Newtonian fluid and has the characteristics of high viscosity and the like, so that the stable supply and flow control of the fuel cannot be ensured when the traditional extrusion type or pumping type liquid fuel supply system is adopted.
Referring to fig. 1, the ramjet system using an energetic slurry fuel (hereinafter, referred to as ramjet system) according to the present embodiment includes an energetic slurry fuel supply device 100, a self-oscillating injector 200, and a ramjet 300, wherein the energetic slurry fuel supply device 100 is connected to the self-oscillating injector 200, and the self-oscillating injector 200 is disposed in the ramjet 300. Wherein the energetic slurry fuel supply means 100 is operable to store and supply energetic slurry fuel, and the self-oscillating injector 200 is operable to jet atomize the energetic slurry fuel supplied by the energetic slurry fuel supply means 100 into the ramjet engine 300, the injected and atomized energetic slurry fuel being ignited in the ramjet engine 300 to provide the ramjet engine 300 with the required power.
Referring to fig. 1 and 2, the energy-containing slurry fuel supply apparatus 100 includes a fuel supply mechanism 110 and a hydraulic supply mechanism 120, the fuel supply mechanism 110 includes a cylinder block 111 and a piston linkage assembly 112, the hydraulic supply mechanism 120 is used for supplying hydraulic oil with a predetermined pressure into the cylinder block 111, the piston linkage assembly 112 is movably disposed in the cylinder block 111, and the piston linkage assembly 112 is used for maintaining pressure balance in the fuel supply mechanism 110.
The cylinder assembly 111 comprises a first cylinder section 1110, a second cylinder section 1111 and a partition 1112, wherein the first cylinder section 1110, the partition 1112 and the second cylinder section 1111 are sequentially arranged, a fuel cavity 115 is arranged in the first cylinder section 1110, a hydraulic cavity 116 is arranged in the second cylinder section 1111, the partition 1112 separates the fuel cavity 115 from the hydraulic cavity 116, the fuel cavity 115 can be used for storing energy-containing slurry fuel, and the hydraulic cavity 116 can contain hydraulic oil delivered by the hydraulic supply mechanism 120.
Piston linkage assembly 112 includes a piston rod 1121 and a piston body 1120 located at both ends of piston rod 1121. The piston rod 1121 is in sliding fit with the partition 1112, a sealing element is arranged between the piston rod 1121 and the partition 1112 to prevent the fuel cavity 115 and the hydraulic cavity 116 from leaking, the two piston bodies 1120 are respectively located in the fuel cavity 115 and the hydraulic cavity 116, cylindrical surfaces of the two piston bodies 1120 are matched with inner wall surfaces of the corresponding fuel cavity 115 and the corresponding hydraulic cavity 116 in shape, and the two piston bodies 1120 can slide in the corresponding fuel cavity 115 and the corresponding hydraulic cavity 116. Therefore, when the piston body 1120 in the hydraulic chamber 116 moves, the piston rod 1121 drives the piston body 1120 in the fuel chamber 115 to move synchronously, so as to achieve linkage, thereby maintaining the pressure balance between the fuel chamber 115 and the hydraulic chamber 116.
Further, as shown in fig. 2, a piston body 1120 located in the fuel chamber 115 divides the fuel chamber 115 into a first rodless chamber 1150 and a first rod chamber 1151, and the piston body 1120 located in the hydraulic chamber 116 divides the hydraulic chamber 116 into a second rodless chamber 1160 and a second rod chamber 1161. Wherein energetic slurry fuel is stored in a first rodless chamber 1150, and both a second rodless chamber 1160 and a second rodless chamber 1161 are in communication with the hydraulic supply mechanism 120.
Referring to fig. 1 and 2, in the present embodiment, the cylinder assembly 111 further includes two oil nozzles 113 and at least one fuel nozzle 114, wherein the two oil nozzles 113 are disposed in the second cylinder section 1111 and respectively correspond to the second rodless cavity 1160 and the second rod cavity 1161, the fuel nozzle 114 is disposed in the first cylinder section 1110, and the fuel nozzle 114 is communicated with the self-oscillation injector 200 through a supply pipe.
The hydraulic pressure supply mechanism 120 includes a hydraulic pressure station 121 and a system controller 122, the hydraulic pressure station 121 and the two oil nozzles 113 are respectively communicated through oil supply pipes, the system controller 122 is electrically connected to the hydraulic pressure station 121, and the system controller 122 can control the hydraulic pressure station 121 to alternately supply oil to the two oil supply pipes and control the amount of the supplied oil.
Thus, the hydraulic pressure supply mechanism 120 can slide the piston body 1120 in the second cylinder section 1111 by being driven by the hydraulic oil. Specifically, when hydraulic oil is supplied to the second rodless cavity 1160, the second rod-containing cavity 1161 is compressed, the hydraulic oil in the second rod-containing cavity 1161 returns to the hydraulic station 121 along the oil supply pipeline, at this time, the piston body 1120 located in the second cylinder section 1111 moves in a direction close to the first cylinder section 1110, the piston rod 1121 drives the piston body 1120 in the fuel cavity 115 to move synchronously, and the piston body 1120 in the fuel cavity 115 gives the same pressure to the energetic slurry fuel in the first rodless cavity 1150, so that the energetic slurry fuel is discharged from the fuel nozzle 114 at a preset pressure and flow rate, and stable supply of the energetic slurry fuel is further achieved.
Furthermore, when hydraulic oil is fed into the second rod-containing cavity 1161, the second rodless cavity 1160 is compressed, the hydraulic oil in the second rodless cavity 1160 returns to the hydraulic station 121 along the oil supply pipeline, at this time, the piston body 1120 located in the second cylinder section 1111 moves in the direction away from the first cylinder section 1110, the piston rod 1121 drives the piston body 1120 in the fuel cavity 115 to move synchronously, negative pressure is formed in the first rodless cavity 1150, and the energy-containing slurry fuel can be sucked through the fuel nozzle 114, so that the function of filling the energy-containing slurry fuel into the fuel cavity 115 can be realized.
Optionally, the cross sections of the fuel cavity 115 and the hydraulic cavity 116 in the radial direction are the same, i.e. the shape and area are the same, and thus the shape and area of the end surfaces of the two piston bodies 1120 are also the same, so that the pressures applied to the end surfaces of the piston bodies 1120 in the fuel cavity 115 and the hydraulic cavity 116 are the same, and further, the stable supply of the energy-containing slurry fuel is ensured.
Referring to fig. 1, 3 and 4, the self-oscillating injector 200 is disposed in the ramjet 300, and the self-oscillating injector 200 is used for injecting and atomizing the energetic slurry fuel supplied from the fuel chamber 115 into the ramjet 300.
Specifically, the self-oscillating injector 200 includes an injector body 210 and a plurality of self-oscillating single nozzles 220, wherein a fuel manifold 211 is provided in the injector body 210, and the fuel manifold 211 is communicated with the fuel cavity 115, so that the supplied energy-containing slurry fuel is collected in the fuel manifold 211.
The self-oscillating single nozzles 220 are all arranged in the injection body 210, the inlets of the self-oscillating single nozzles 220 are communicated with the fuel converging cavity 211, and the outlets of the self-oscillating single nozzles 220 face the combustion chamber 321 of the ramjet engine 300. Therefore, the energy-containing slurry fuel collected in the fuel collecting cavity 211 uniformly enters each self-oscillation single nozzle 220, and is atomized and injected into the combustion chamber 321 of the ramjet engine 300 by the self-oscillation single nozzle 220.
Referring to fig. 5, optionally, the plurality of self-oscillating single nozzles 220 are uniformly distributed on the cross section of the injection body 210 along the width direction, so that the atomized injection is more uniform.
Referring to fig. 5, in some embodiments, the self-oscillating single nozzles 220 in two adjacent rows are staggered along the cross-section of the nozzle body 210 in the width direction, so as to further improve the uniformity of the atomized spray.
Referring to fig. 3 and 4, further, the self-oscillating single nozzle 220 includes a liquid inlet channel 221, an upper channel 222, a self-oscillating chamber 223 and a lower channel 224 which are sequentially communicated with each other along the flowing direction of the energy-containing slurry fuel, wherein the diameters of the upper channel 222 and the lower channel 224 are smaller than the diameter of the self-oscillating chamber 223, and the lower channel 224 is communicated with the injection port 225 of the self-oscillating single nozzle 220.
The working principle of the self-oscillation single nozzle 220 is as follows: the energy-containing slurry fuel passes through the liquid inlet channel 221, the upper channel 222, the self-oscillation cavity 223 and the lower channel 224 in sequence from the fuel converging cavity 211 and is ejected out of the injection port 225. The energy-containing slurry fuel enters the self-oscillation cavity 223 from the upper runner 222 in a high-speed jet flow mode, because the section from the upper runner 222 to the self-oscillation cavity 223 changes suddenly and gas exists in the self-oscillation cavity 223, the gas can form a shearing effect on the high-speed jet flow, the surface disturbance of the high-speed jet flow is continuously developed until the high-speed jet flow reaches the bottom of the self-oscillation cavity 223, and at the moment, disturbance waves are reflected upwards to an inlet. If the frequency and phase of disturbance waves are close to those of high-speed jet flow instability, the development of jet flow disturbance is aggravated, and the high-speed jet flow disturbance is amplified. Repeated superposition amplification of the disturbance waves in the self-oscillation cavity 223 finally leads to the formation of self-oscillation, thereby accelerating the atomization process of the energy-containing slurry fuel.
Referring to fig. 6, 7 and 8, the ramjet 300 sequentially includes an isolation section 310 and at least one combustion chamber section 320 along an airflow direction, the combustion chamber 321 is formed in the combustion chamber section 320, and the self-oscillation injector 200 is disposed in the combustion chamber section 320.
Further, a concave cavity 322 is formed in the inner wall surface of the combustion chamber section 320, the self-oscillation injector 200 is located upstream of the concave cavity 322, and the airflow speed in the concave cavity 322 is low, so that ignition and combustion supporting can be assisted.
Alternatively, the number of the cavities 322 may be plural, and may be distributed at different flow direction positions of the combustion chamber 321 or on different wall surfaces.
In some embodiments, the width of the combustion chamber 321 increases gradually along the direction of the airflow. The inner flow passage 311 of the isolation section 310 is a uniform section or a micro-expansion section of 1-2 degrees.
Further, the cross section of the combustion chamber 321 along the length direction may be a single-sided expansion, a double-layered expansion, or a uniform expansion all around.
Alternatively, the number of the combustion chamber sections 320 may be one section, two sections, three sections, etc., and the number of the sections of the combustion chamber sections 320 is not particularly limited in this embodiment.
Referring to fig. 1 and fig. 6, in the present embodiment, the ramjet system further includes a heat flux density sensor 400, and the heat flux density sensor 400 is disposed on an inner wall of the combustion chamber 321. The heat flux density sensor 400 is located downstream of the cavity 322, and when the energetic slurry fuel is stably combusted in the combustion chamber 321 of the ramjet engine 300, the heat flux density sensor 400 can measure the heat flux density value of the wall surface at a specific location.
With reference to fig. 9, 10 and 11, in the present embodiment, a slurry fuel containing energy slurry fuel JP-10+ 16% Al is taken as an example for description:
as shown in fig. 9, which shows the fuel flow rate curve corresponding to the JP-10+ 16% Al slurry fuel in the energy-containing slurry fuel supply device 100, it can be found that the fuel flow rate is substantially stable within the operating time of the energy-containing slurry fuel supply device 100, and the deviation from the designed value is less than 2%, which indicates that the energy-containing slurry fuel supply device 100 can realize stable fuel supply.
As shown in fig. 10, the corresponding injection pressure when the self-oscillating injector 200 supplies JP-10+ 16% Al slurry fuel is shown, and the corresponding injection pressure when the JP-10+ 16% Al slurry fuel is supplied by using the conventional straight-flow injector is also shown, it can be found that the injection process corresponding to the self-oscillating injector 200 provided by the present embodiment is stable, the injection pressure is about 1MP, the injection pressure fluctuation corresponding to the conventional straight-flow injector is significant, and the injection pressure is too high, thereby illustrating that the self-oscillating injector 200 of the present embodiment can realize the efficient injection atomization of energetic slurry fuel.
As shown in FIG. 11, which shows the measurement results of the heat flow density sensor 400 when the JP-10+ 16% Al slurry fuel is combusted, and also shows the measurement results of the heat flow density sensor 400 when the JP-10 liquid hydrocarbon fuel is combusted, it can be found that the heat flow is significantly improved when the energy-containing slurry fuel is combusted.
In summary, compared with the prior art, the ramjet system provided by the embodiment has the following advantages:
(1) a stable supply of energy-containing slurry fuel into the ramjet engine 300 is achieved;
(2) efficient injection of energetic slurry fuel in the ramjet engine 300 is achieved;
(3) stable combustion and reliable operation of the energetic slurry fuel in the ramjet engine 300 is achieved.
Example two
Referring to fig. 1 and 8, the present embodiment provides a ramjet system using an energy-containing slurry fuel, which is an improvement based on the above-mentioned first embodiment, and compared with the above-mentioned first embodiment, the difference is that:
in the present embodiment, the cylinder assembly 111 includes a first cylinder section 1110, a second cylinder section 1111, a fuel nozzle 113, and a fuel nozzle 114. The first cylinder section 1110 is internally provided with a fuel cavity 115, the second cylinder section 1111 is internally provided with a hydraulic cavity 116, the first cylinder section 1110 and the second cylinder section 1111 are oppositely arranged, the piston linkage assembly 112 is slidably arranged in the first cylinder section 1110 and the second cylinder section 1111, and the piston linkage assembly 112 directly separates the fuel cavity 115 from the fuel cavity 115.
The fuel nozzle 114 is disposed on the first cylinder section 1110 and is communicated with the fuel cavity 115, the oil nozzle 113 is disposed on the second cylinder section 1111 and is communicated with the hydraulic cavity 116, when the hydraulic station 121 delivers hydraulic oil with a preset pressure into the hydraulic cavity 116, the piston linkage assembly 112 is pushed to move integrally to the fuel cavity 115, and then the energy-containing slurry fuel in the fuel cavity 115 is discharged from the fuel nozzle 114, so that stable supply of the energy-containing slurry fuel can be realized. If the energy-containing slurry fuel needs to be filled, the energy-containing slurry fuel needs to be injected into the fuel cavity 115 from the fuel nozzle 114 through an external feeding device under certain pressure, and at the moment, the piston linkage assembly 112 moves towards the hydraulic cavity 116, and hydraulic oil is sent back to the hydraulic station 121 through the oil nozzle 113.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A ramjet system using energy-containing slurry fuel is characterized by comprising an energy-containing slurry fuel supply device, a self-oscillation injector and a ramjet;
the energy-containing slurry fuel supply device comprises a fuel supply mechanism and a hydraulic supply mechanism, wherein the fuel supply mechanism comprises a cylinder body assembly and a piston linkage assembly, a fuel cavity and a hydraulic cavity are arranged in the cylinder body assembly, the piston linkage assembly is movably arranged in the cylinder body assembly, the hydraulic supply mechanism is connected with the cylinder body assembly, the hydraulic supply mechanism is used for providing hydraulic oil with preset pressure for the hydraulic cavity, and the piston linkage assembly is used for maintaining the pressure balance between the fuel cavity and the hydraulic cavity;
the self-oscillation injector is arranged on the ramjet and connected with the cylinder body assembly, and is used for injecting and atomizing the energy-containing slurry fuel in the fuel cavity into the ramjet.
2. The ramjet system for applying an energetic slurry fuel according to claim 1, wherein the fuel chamber and the hydraulic chamber have a uniform cross section in a radial direction.
3. The ramjet system for applying an energetic slurry fuel according to claim 1, wherein a partition is provided inside the cylinder block assembly, the partition separating the fuel chamber and the hydraulic chamber;
the piston linkage assembly comprises a piston rod and piston bodies located at two ends of the piston rod, the piston rod is in sliding fit with the partition plate, and the two piston bodies are located in the fuel cavity and the hydraulic cavity respectively.
4. The ramjet system for applying an energetic slurry fuel according to claim 1, wherein said self-oscillating injector comprises an injector body and a plurality of self-oscillating single jets, wherein a fuel manifold is arranged in said injector body, said fuel manifold is in communication with said fuel chamber, each of said plurality of self-oscillating single jets is arranged in said injector body, an inlet of said self-oscillating single jet is in communication with said fuel manifold, and an outlet of said self-oscillating single jet is directed towards a combustion chamber of said ramjet.
5. The ramjet system using energy-containing slurry fuel according to claim 4, wherein the self-oscillating single nozzle comprises a liquid inlet channel, an upper channel, a self-oscillating cavity and a lower channel which are communicated in sequence along the flow direction of the energy-containing slurry fuel, wherein the diameters of the upper channel and the lower channel are smaller than that of the self-oscillating cavity, and the lower channel is communicated with the injection port of the self-oscillating single nozzle.
6. The ramjet engine system using an energetic slurry fuel according to claim 4, wherein a plurality of the self-oscillating single nozzles are uniformly distributed on a cross section of the injection body in a width direction.
7. The ramjet engine system using energetic slurry fuel according to claim 6, wherein said self-oscillating single nozzles on two adjacent rows are staggered in a cross section along a width direction of said injector body.
8. The ramjet system for applying an energetic slurry fuel according to claim 1, characterized in that a heat flux density sensor is arranged on an inner wall of a combustion chamber of the ramjet.
9. The ramjet system using energy-containing slurry fuel according to claim 1, wherein said ramjet comprises an isolation section and at least one combustion chamber section in sequence along an air flow direction, said self-oscillation injector is disposed in said combustion chamber section, a combustion chamber is formed in said combustion chamber section, and a width of said combustion chamber is gradually increased along said air flow direction.
10. The ramjet system for applying an energetic slurry fuel of claim 1, wherein a combustion chamber is formed in the ramjet, an inner wall surface of the combustion chamber being provided with a cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111304050.5A CN114017204A (en) | 2021-11-05 | 2021-11-05 | Ramjet system using energy-containing slurry fuel |
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| CN105728219A (en) * | 2016-04-20 | 2016-07-06 | 南京理工大学 | Striking and self-exciting oscillation high-thickness fluid two-phase spraying nozzle |
| CN105840351A (en) * | 2016-03-22 | 2016-08-10 | 天津大学 | Method for supplying gel or paste fuel to engine combustor |
| CN105944862A (en) * | 2016-07-07 | 2016-09-21 | 北京航天发射技术研究所 | Atomizing nozzle and atomizing spray head using atomizing nozzle |
| CN108580076A (en) * | 2018-04-28 | 2018-09-28 | 北京航天发射技术研究所 | A kind of atomization nozzle and the atomization nozzle using the atomization nozzle |
| CN209800120U (en) * | 2019-02-25 | 2019-12-17 | 重庆零壹空间航天科技有限公司 | Slurry fuel supply system |
| CN110594041A (en) * | 2019-09-09 | 2019-12-20 | 北京航空航天大学 | Self-oscillation nozzle for atomizing granular gel-containing propellant of ramjet engine |
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- 2021-11-05 CN CN202111304050.5A patent/CN114017204A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102161020A (en) * | 2011-03-28 | 2011-08-24 | 北京航空航天大学 | Self-excited vibration jet impact type nozzle with conical reflecting surface resonant cavity |
| CN102121445A (en) * | 2011-03-30 | 2011-07-13 | 重庆磐达机械有限公司 | Air intake mixing structure for fuel gas multi-point injection |
| CN105840351A (en) * | 2016-03-22 | 2016-08-10 | 天津大学 | Method for supplying gel or paste fuel to engine combustor |
| CN105728219A (en) * | 2016-04-20 | 2016-07-06 | 南京理工大学 | Striking and self-exciting oscillation high-thickness fluid two-phase spraying nozzle |
| CN105944862A (en) * | 2016-07-07 | 2016-09-21 | 北京航天发射技术研究所 | Atomizing nozzle and atomizing spray head using atomizing nozzle |
| CN108580076A (en) * | 2018-04-28 | 2018-09-28 | 北京航天发射技术研究所 | A kind of atomization nozzle and the atomization nozzle using the atomization nozzle |
| CN209800120U (en) * | 2019-02-25 | 2019-12-17 | 重庆零壹空间航天科技有限公司 | Slurry fuel supply system |
| CN110594041A (en) * | 2019-09-09 | 2019-12-20 | 北京航空航天大学 | Self-oscillation nozzle for atomizing granular gel-containing propellant of ramjet engine |
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