CN210165426U - Afterburner using metal powder as fuel - Google Patents
Afterburner using metal powder as fuel Download PDFInfo
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- CN210165426U CN210165426U CN201921082686.8U CN201921082686U CN210165426U CN 210165426 U CN210165426 U CN 210165426U CN 201921082686 U CN201921082686 U CN 201921082686U CN 210165426 U CN210165426 U CN 210165426U
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Abstract
The utility model provides an afterburner with metal powder as fuel, afterburner includes powder fuel storage tank, piston, discrete steady flame awl, plasma igniter and fairing cone, the powder fuel storage tank passes through the storage tank dead lever and arranges in the fairing cone inner chamber, discrete steady flame awl with the plasma igniter is installed on the fairing cone cross section, make powder fuel storage tank with the fairing cone with discrete steady flame awl coaxial distribution; the powder fuel storage tank comprises an end cover, a straight section, a convergence section and a powder conveying pipe, wherein the end cover, the straight section, the convergence section and the powder conveying pipe are sequentially connected to form a complete cavity; the piston is mounted within the straight section. The utility model discloses a metal powder has reduced the requirement of traditional fuel to oxygen content in the gas as afterburner's fuel, and metal powder's heat value of combustion is higher than the fuel simultaneously, can improve afterburner's temperature by a wide margin to effective oil consumption reduction.
Description
Technical Field
The utility model relates to an aerospace power technical field especially relates to an use afterburner of metal powder as fuel.
Background
Afterburners are an important component of gas turbine power plants and are commonly used in military aircraft to increase engine thrust and thereby improve the maneuverability of the military aircraft. The afterburner is usually installed between the turbine and the tail nozzle, and fuel oil is injected into high-temperature fuel gas after the turbine, and the fuel oil and residual oxygen in the fuel gas are combusted to further improve the temperature of the fuel gas and increase the jet speed, so that the purpose of boosting is achieved. However, the oxygen content in the gas after the turbine is about 1/4 less than that of the air, and the gas flow velocity is too high, so that the oil consumption is extremely high, the afterburner can only be used for a short time when the airplane takes off or is in high maneuver, and the idle time of the airplane is severely limited.
Therefore, how to effectively reduce the fuel oil consumption on the premise of ensuring the thrust augmentation performance is the key for improving the maneuverability of the military aircraft. The measures are to perform good combustion organization design on the traditional conventional afterburner on one hand and to search afterburns with higher heating values to replace fuel oil on the other hand. Metal powder fuels (e.g., aluminum, magnesium, etc.) have a higher calorific value than fuel oil, and are successively proposed for use in powder rocket engines and powder ramjet engines. In view of the different and equivalent structural properties of the ramjet and afterburner, it is possible in principle to use metal powder fuel for the afterburner. Moreover, the combustion reaction of the metal powder fuel in the gas after the turbine has natural advantages compared with fuel oil, and the metal powder fuel can not only react with residual oxygen in the gas, but also react with main combustion products in the gas (such as the reaction of aluminum particles and water vapor, the reaction of magnesium particles and carbon dioxide and the like), so that the application prospect of the metal powder fuel afterburner is wide.
Disclosure of Invention
In order to solve the technical problem, the utility model provides an afterburner with metal powder as fuel, afterburner includes powdered fuel storage tank, piston, discrete steady flame awl, plasma igniter and fairing cone, the powdered fuel storage tank passes through the storage tank dead lever and arranges in the fairing cone inner chamber, discrete steady flame awl with the plasma igniter is installed on the fairing cone cross section, make the powdered fuel storage tank with the fairing cone with the coaxial distribution of discrete flame steady flame awl; the powder fuel storage tank comprises an end cover, a straight section, a convergence section and a powder conveying pipe, wherein the end cover, the straight section, the convergence section and the powder conveying pipe are sequentially connected to form a complete cavity; the piston is mounted within the straight section.
The center of the end cover is provided with a driving air inlet hole, and a driving air inlet pipeline is connected with the end cover through the driving air inlet hole.
The bottom of the straight section is provided with a powder fuel filling hole, and a powder fuel filling pipeline is connected with the straight section through the powder fuel filling hole.
The fluidized gas inlet pipeline is arranged at the joint of the straight section and the convergent section through the fluidized gas inlet; the powder fuel storage tank is internally provided with an internal fluidizing gas pipe, a gas inlet of the internal fluidizing gas pipe is communicated with the fluidizing gas inlet pipeline, the exhaust sections are arranged on the central axis of the powder fuel storage tank, and the gas outlet is opposite to the powder conveying pipe.
The top of the straight section is provided with a fluidizing gas inlet hole, and a fluidizing gas inlet pipeline is connected with the straight section through the fluidizing gas inlet hole; the powder fuel storage tank is internally provided with an internal fluidizing gas pipe, a gas inlet of the internal fluidizing gas pipe is communicated with the fluidizing gas inlet pipeline, the exhaust sections are arranged on the central axis of the powder fuel storage tank, and the gas outlet is opposite to the powder conveying pipe.
The top of the convergent section is provided with a fluidizing gas inlet hole, and a fluidizing gas inlet pipeline is connected with the convergent section through the fluidizing gas inlet hole; the powder fuel storage tank is internally provided with an internal fluidizing gas pipe, a gas inlet of the internal fluidizing gas pipe is communicated with the fluidizing gas inlet pipeline, the exhaust sections are arranged on the central axis of the powder fuel storage tank, and the gas outlet is opposite to the powder conveying pipe.
Wherein, the angle of the connection between the straight section and the convergent section is between 105 and 165 degrees.
Preferably, the angle at which the straight section connects with the convergent section is 110 degrees, 115 degrees, 120 degrees, 125 degrees, 130 degrees, 135 degrees, 140 degrees, 145 degrees, 150 degrees, 155 degrees, 160 degrees.
Wherein the cone angle of the discrete flame stabilizing cone ranges between 45 degrees and 135 degrees.
Preferably, the cone angle of the discrete flame stabilizing cone is 50 degrees, 60 degrees, 70 degrees, 80 degrees, 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees.
The number of the plasma igniters is 4, and the plasma igniters are arranged at the mixing position of the dispersed powder fuel and the high-temperature fuel gas.
Wherein, the distance between the discrete flame stabilizing cone and the powder conveying pipe is less than 3 cm.
Preferably, the distance between the discrete flame stabilizing cone and the powder conveying pipe is 2.5cm, 2.0m, 15cm, 1.0cm, 0.5cm and 0 cm.
The utility model has the advantages that:
the utility model provides an use afterburning chamber of metal powder as fuel, the steady flame awl of powder dispersion is the toper structure, and the steady flame awl effect of dispersion divide into two parts: firstly, the gas-solid two-phase flow moving axially changes the direction so as to be rapidly mixed with high-temperature incoming flow; and secondly, a backflow vortex can be formed behind the conical diffuser, so that flame stabilization is realized. The igniter is a plasma igniter which can provide high-temperature flame to ignite the powdered fuel and can also support combustion.
The utility model has the advantages of adopt metal powder as afterburning chamber's fuel, metal powder can carry out combustion reaction by the multiple component in the high temperature gas to the requirement of oxygen content in traditional fuel to the gas has been reduced. Meanwhile, the combustion heat value of the metal powder is higher than that of fuel oil, so that the temperature of an afterburner can be greatly increased, the oil consumption is effectively reduced, the air-remaining time and the maneuvering performance of the military aircraft are improved, and the application prospect is wide.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the drawings without creative efforts for those skilled in the art.
Fig. 1 is a schematic view of the overall structure of an afterburner provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a powder fuel storage tank in an afterburner provided in embodiment 1 of the present invention;
the names corresponding to the reference numbers in the drawings are as follows: 1-driving gas inlet pipeline, 2-powder fuel storage tank, 201-end cover, 202-straight section, 203-convergent section, 204-powder conveying pipe, 3-fluidizing gas inlet pipeline, 4-internal fluidizing gas pipe, 5-discrete stable flame cone, 6-plasma igniter, 7-powder fuel filling pipeline, 8-storage tank fixing rod, 9-piston, 10-rectifying cone and 11-diffuser.
Detailed Description
The following is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Example 1
The utility model provides an use afterburner of metal powder as fuel, as shown in fig. 1 and fig. 2, afterburner includes powder fuel storage tank 2, piston 9, dispersion steady flame awl 5, plasma igniter 6 and fairing cone 10, powder fuel storage tank 2 passes through storage tank dead lever 8 and arranges in the 10 inner chambers of fairing cone, dispersion steady flame awl 5 with plasma igniter 6 install on 10 cross sections of fairing cone, make powder fuel storage tank 2 with fairing cone 10 with the coaxial distribution of dispersion steady flame awl 5, the material of dispersion steady flame awl 5 is high temperature resistant metal material, and the cone angle is 120 degrees, the quantity of plasma igniter 6 is 4, all to arranging the powder fuel after the dispersion and high temperature gas mixing department; the powder fuel storage tank 2 comprises an end cover 201, a straight section 202, a convergent section 203 and a powder conveying pipe 204, wherein the end cover 201, the straight section 202, the convergent section 203 and the powder conveying pipe 204 are sequentially connected to form a complete cavity, the angle of connection between the straight section 202 and the convergent section 203 is 115 degrees, and the distance between the discrete flame stabilizing cone 5 and the powder conveying pipe 204 is 2.5 cm; the piston 9 is installed in the straight section 202, a cavity is formed between the piston 9 and the end cover 201, and a powder filling area is formed between the piston 9 and the converging section 203.
The center of the end cover 201 is provided with a driving air inlet hole, the driving air inlet pipeline 1 is connected with the end cover 201 through the driving air inlet hole and is used for filling air into the cavity to drive the piston 9 to move so as to push the powder to advance, and the driving air inlet pipeline 1 adopts a high-temperature-resistant metal hose structure. The bottom of the straight section 202 is provided with a powder fuel filling hole, a powder fuel filling pipeline 7 is connected with the straight section 202 through the powder fuel filling hole and is used for filling powder fuel into the powder fuel storage tank 2, and the powder fuel filling pipeline 7 adopts a high-temperature-resistant metal hose structure. A fluidization gas inlet hole is formed in the joint of the top of the straight section 202 and the convergent section 203, a fluidization gas inlet pipeline 3 is installed at the joint of the straight section 202 and the convergent section 203 through the fluidization gas inlet hole, and the fluidization gas inlet pipeline 3 adopts a high-temperature-resistant metal hose structure; be equipped with inside fluidization trachea 4 in the powdered fuel storage tank 2, inside fluidization trachea 4 is stainless steel's bent pipe structure, air inlet one end with fluidization gas inlet line 3 switch-on, the exhaust section all sets up on the central axis of powdered fuel storage tank 2, and the gas vent is just right defeated powder pipe 204 is used for filling fluidization gas the inside powder air conveying that forms of powdered fuel storage tank 2.
Example 2
The utility model provides an use afterburner of metal powder as fuel, afterburner includes powder fuel storage tank 2, piston 9, discrete steady flame awl 5, plasma igniter 6 and fairing cone 10, powder fuel storage tank 2 passes through storage tank dead lever 8 and arranges in the 10 inner chambers of fairing cone, discrete steady flame awl 5 with plasma igniter 6 installs on 10 cross sections of fairing cone, make powder fuel storage tank 2 with fairing cone 10 with the coaxial distribution of discrete steady flame awl 5, the material of discrete steady flame awl 5 is high temperature resistant metal material, and the cone angle is 75 degrees, the quantity of plasma igniter 6 is 4, all to arranging the powder fuel and the high temperature gas mixing department after the dispersion; the powder fuel storage tank 2 comprises an end cover 201, a straight section 202, a convergent section 203 and a powder conveying pipe 204, wherein the end cover 201, the straight section 202, the convergent section 203 and the powder conveying pipe 204 are sequentially connected to form a complete cavity, the angle of connection between the straight section 202 and the convergent section 203 is 130 degrees, and the distance between the discrete flame stabilizing cone 5 and the powder conveying pipe 204 is 1.5 cm; the piston 9 is installed in the straight section 202, a cavity is formed between the piston 9 and the end cover 201, and a powder filling area is formed between the piston 9 and the converging section 203.
The center of the end cover 201 is provided with a driving air inlet hole, the driving air inlet pipeline 1 is connected with the end cover 201 through the driving air inlet hole and is used for filling air into the cavity to drive the piston 9 to move so as to push the powder to advance, and the driving air inlet pipeline 1 adopts a high-temperature-resistant metal hose structure. The bottom of the straight section 202 is provided with a powder fuel filling hole, a powder fuel filling pipeline 7 is connected with the straight section 202 through the powder fuel filling hole and is used for filling powder fuel into the powder fuel storage tank 2, and the powder fuel filling pipeline 7 adopts a high-temperature-resistant metal hose structure. The top of the straight section 202 is provided with a fluidization gas inlet hole, a fluidization gas inlet pipeline 3 is connected with the straight section 202 through the fluidization gas inlet hole, and the fluidization gas inlet pipeline 3 adopts a high-temperature-resistant metal hose structure; be equipped with inside fluidization trachea 4 in the powdered fuel storage tank 2, inside fluidization trachea 4 is stainless steel's bent pipe structure, air inlet one end with fluidization gas inlet line 3 switch-on, the exhaust section all sets up on the central axis of powdered fuel storage tank 2, and the gas vent is just right defeated powder pipe 204 is used for filling fluidization gas the inside powder air conveying that forms of powdered fuel storage tank 2.
Example 3
The utility model provides an use afterburner of metal powder as fuel, afterburner includes powder fuel storage tank 2, piston 9, discrete steady flame awl 5, plasma igniter 6 and fairing cone 10, powder fuel storage tank 2 passes through storage tank dead lever 8 and arranges in fairing cone (10) inner chamber, discrete steady flame awl 5 with plasma igniter 6 installs on fairing cone 10 cross section, make powder fuel storage tank 2 with fairing cone 10 with the coaxial distribution of discrete steady flame awl 5, the material of discrete steady flame awl 5 is high temperature resistant metal material, and the cone angle is 90 degrees, the quantity of plasma igniter 6 is 4, all to the powder fuel and the high temperature gas mixing department of arranging after the dispersion; the powder fuel storage tank 2 comprises an end cover 201, a straight section 202, a convergent section 203 and a powder conveying pipe 204, wherein the end cover 201, the straight section 202, the convergent section 203 and the powder conveying pipe 204 are sequentially connected to form a complete cavity, the angle of connection between the straight section 202 and the convergent section 203 is 150 degrees, and the distance between the discrete flame stabilizing cone 5 and the powder conveying pipe 204 is 0.5 cm; the piston 9 is installed in the straight section 202, a cavity is formed between the piston 9 and the end cover 201, and a powder filling area is formed between the piston 9 and the converging section 203.
The center of the end cover 201 is provided with a driving air inlet hole, the driving air inlet pipeline 1 is connected with the end cover 201 through the driving air inlet hole and is used for filling air into the cavity to drive the piston 9 to move so as to push the powder to advance, and the driving air inlet pipeline 1 adopts a high-temperature-resistant metal hose structure. The bottom of the straight section 202 is provided with a powder fuel filling hole, a powder fuel filling pipeline 7 is connected with the straight section 202 through the powder fuel filling hole and is used for filling powder fuel into the powder fuel storage tank 2, and the powder fuel filling pipeline 7 adopts a high-temperature-resistant metal hose structure. A fluidization gas inlet hole is formed in the top of the convergent section 203, and a fluidization gas inlet pipeline 3 is connected with the convergent section 203 through the fluidization gas inlet hole; an internal fluidizing air pipe 4 is arranged in the powder fuel storage tank 2, an air inlet of the internal fluidizing air pipe 4 is communicated with the fluidizing air inlet pipeline 3, air exhaust sections are arranged on the central axis of the powder fuel storage tank 2, and an air exhaust port is opposite to the powder conveying pipe 204 and is used for filling fluidizing air into the powder fuel storage tank 2 to form powder pneumatic conveying.
The utility model provides an use afterburning chamber of metal powder as fuel, when afterburning mode is opened to needs, drive air inlet line 1 and fluidization gas inlet line 3 begin respectively to export with strength form with metal powder fuel B in powder fuel storage tank 2 to powder fuel storage tank 2 air feed, wherein fluidization gas inlet line 3 is connected with inside fluidization trachea 4, through the high velocity air flow, drive simultaneously the gas and get into the cavity between piston 9 and the storage tank end cover 201, promote piston 9 and move forward, promote the powder then in order to fill the cavity that causes because of powder strength output. The metal powder fuel is ejected out of the powder fuel storage tank 2 through the powder conveying pipe 204 under the pneumatic conveying, the powder moving direction is changed from axial movement to diffusion to the periphery at a certain angle under the action of the discrete stable flame cone 5, and the powder moving direction is mixed with the turbine rear gas A at the downstream of the diffuser 11, and at the moment, the plasma igniter 6 is started to ignite the mixed metal powder and the high-temperature gas A. Because the discrete flame stabilizing cone 5 is in a conical bluff body structure, backflow can be formed at the tail part, and the flame stabilizing effect is achieved.
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An afterburner with metal powder as fuel, characterized in that: the afterburner comprises a powder fuel storage tank (2), a piston (9), a discrete flame stabilizing cone (5), a plasma igniter (6) and a fairing cone (10), wherein the powder fuel storage tank (2) is arranged in the inner cavity of the fairing cone (10) through a storage tank fixing rod (8), and the discrete flame stabilizing cone (5) and the plasma igniter (6) are arranged on the cross section of the fairing cone (10) so that the powder fuel storage tank (2) and the fairing cone (10) and the discrete flame stabilizing cone (5) are coaxially distributed; the powder fuel storage tank (2) comprises an end cover (201), a straight section (202), a convergence section (203) and a powder conveying pipe (204), wherein the end cover (201), the straight section (202), the convergence section (203) and the powder conveying pipe (204) are sequentially connected to form a complete cavity; the piston (9) is mounted within the straight section (202).
2. A metal powder fueled afterburner according to claim 1 wherein: the center of the end cover (201) is provided with a driving air inlet hole, and a driving air inlet pipeline (1) is connected with the end cover (201) through the driving air inlet hole.
3. A metal powder fueled afterburner according to claim 1 wherein: the bottom of the straight section (202) is provided with a powder fuel filling hole, and a powder fuel filling pipeline (7) is connected with the straight section (202) through the powder fuel filling hole.
4. A metal powder fueled afterburner according to claim 1 wherein: a fluidization air inlet hole is formed in the joint of the top of the straight section (202) and the convergent section (203), and a fluidization air inlet pipeline (3) is installed at the joint of the straight section (202) and the convergent section (203) through the fluidization air inlet hole; the powder fuel storage tank is characterized in that an internal fluidizing gas pipe (4) is arranged in the powder fuel storage tank (2), a gas inlet of the internal fluidizing gas pipe (4) is communicated with the fluidizing gas inlet pipeline (3), a gas exhaust section is arranged on the central axis of the powder fuel storage tank (2), and a gas exhaust port is opposite to the powder conveying pipe (204).
5. A metal powder fueled afterburner according to claim 1 wherein: the top of the straight section (202) is provided with a fluidization gas inlet hole, and a fluidization gas inlet pipeline (3) is connected with the straight section (202) through the fluidization gas inlet hole; the powder fuel storage tank is characterized in that an internal fluidizing gas pipe (4) is arranged in the powder fuel storage tank (2), a gas inlet of the internal fluidizing gas pipe (4) is communicated with the fluidizing gas inlet pipeline (3), a gas exhaust section is arranged on the central axis of the powder fuel storage tank (2), and a gas exhaust port is opposite to the powder conveying pipe (204).
6. A metal powder fueled afterburner according to claim 1 wherein: the top of the convergent section (203) is provided with a fluidization gas inlet hole, and a fluidization gas inlet pipeline (3) is connected with the convergent section (203) through the fluidization gas inlet hole; the powder fuel storage tank (2) is internally provided with an internal fluidizing gas pipe (4), a gas inlet of the internal fluidizing gas pipe (4) is communicated with the fluidizing gas inlet pipeline (3), and the gas exhaust section is arranged on the central axis of the powder fuel storage tank (2) and is aligned with the gas exhaust port.
7. An afterburner fueled by metal powders according to any one of claims 1 to 6, wherein: the angle at which the straight section (202) and the convergent section (203) are connected is between 105 and 165 degrees.
8. An afterburner fueled by metal powders according to any one of claims 1 to 6, wherein: the cone angle of the discrete flame stabilizing cone (5) ranges from 45 degrees to 135 degrees.
9. An afterburner fueled by metal powders according to any one of claims 1 to 6, wherein: the number of the plasma igniters (6) is 4, and the plasma igniters are arranged at the mixing position of the dispersed powder fuel and the high-temperature fuel gas.
10. An afterburner fueled by metal powders according to any one of claims 1 to 6, wherein: the distance between the discrete flame stabilizing cone (5) and the powder conveying pipe (204) is less than 3 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082686.8U CN210165426U (en) | 2019-07-11 | 2019-07-11 | Afterburner using metal powder as fuel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082686.8U CN210165426U (en) | 2019-07-11 | 2019-07-11 | Afterburner using metal powder as fuel |
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| CN210165426U true CN210165426U (en) | 2020-03-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260361A (en) * | 2019-07-11 | 2019-09-20 | 南昌航空大学 | It is a kind of using metal powder as the after-burner of fuel |
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- 2019-07-11 CN CN201921082686.8U patent/CN210165426U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260361A (en) * | 2019-07-11 | 2019-09-20 | 南昌航空大学 | It is a kind of using metal powder as the after-burner of fuel |
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