A cyclone-based powder supply device for a powder ramjet engine

Abstract

The application provides a powder supply device of a powder ramjet engine based on cyclone, which comprises a powder supply combustion chamber shell open at two ends in the transverse direction, a powder supply combustion cavity in the powder supply combustion chamber shell, a powder supply chamber coaxially sleeved at a left position in the powder supply combustion cavity and open at two ends, a powder fluidization chamber coaxially sleeved at a middle position in the powder supply combustion cavity and open at two ends, and a right end of the powder supply chamber is fixedly connected with a left end of the powder fluidization chamber and the interiors are connected in communication. The right end of the powder fluidization chamber is further fixedly connected with a left end of a straight section of a cyclone arranged coaxially and the interior cavities are connected in communication. A combustion chamber is further arranged at a right part in the powder supply combustion cavity, and a left end of the combustion cavity is connected in communication with a right end of the cyclone. The application selects cyclone as a way of strengthening mixing, designs a powder supply device with a cyclone, the existence of the cyclone helps the mixing of metal powder and air, can improve the uniformity of spatial distribution of powder fuel downstream of the powder supply device, and further improves the ignition performance and self-sustaining combustion performance of the powder fuel ramjet engine.

Description

Technical Field

[0001] This invention belongs to the field of ramjet engine technology, and relates to powdered fuel, specifically to a powder ramjet engine powder supply device based on swirl. Background Technology

[0002] With continuous breakthroughs and maturation of related technologies, supersonic aircraft will play a crucial role in future military conflicts, becoming one of the core technologies in great power competition. As an optional power source for supersonic aircraft, powder-fueled ramjet engines offer advantages over liquid-fueled ramjet engines, including simpler structure, lighter weight, and lower cost. Utilizing fluidized gas, powder possesses strong throttling capabilities, facilitating fuel delivery shutdown and flow regulation. The performance of the powder supply system significantly affects the mixing effect of metal powder and air within the combustion chamber, further influencing the combustion process and performance. Therefore, a novel powder supply method needs to be designed. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a powder supply device for a swirl-based powder ramjet engine, thereby solving the technical problem that the ignition performance of existing powder fuel ramjet engines needs further improvement.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A powder supply device for a swirl-based powder press engine includes a powder supply combustion chamber shell that is open at both ends laterally. The cavity inside the powder supply combustion chamber shell is a powder supply combustion chamber. A powder supply chamber with open ends is coaxially fitted on the left side of the powder supply combustion chamber. A powder fluidization chamber with open ends is coaxially fitted on the middle side of the powder supply combustion chamber. The right end of the powder supply chamber is coaxially fixedly connected to the left end of the powder fluidization chamber, so that the internal cavity of the powder fluidization chamber is connected to the internal cavity of the powder supply chamber.

[0006] The right end of the powder fluidization chamber is also fixedly connected to the left end of the straight section of the coaxially arranged hydrocyclone, so that the internal cavity of the straight section of the hydrocyclone is also connected to the internal cavity of the powder fluidization chamber.

[0007] A combustion chamber is also provided on the right side of the powder supply combustion chamber, and the left end of the combustion chamber is connected to the right end of the cyclone separator.

[0008] The powder supply chamber is also equipped with a sealable powder supply piston.

[0009] The cyclone includes a cyclone flat section arranged along an axial center line and internally hollow, one end of the cyclone flat section is open and the other end is closed, the left end side wall of the cyclone flat section is fixedly connected with the right end side wall of the powder fluidization chamber, the inside of the powder fluidization chamber is also connected with the inside of the cyclone flat section, and a plurality of internally hollow cyclone hollow blades are uniformly arranged on the right end of the cyclone flat section in the circumferential direction.

[0010] The one end of each cyclone hollow blade fixedly connected with the cyclone flat section is open, the inside of the cyclone flat section is connected with the inside of each cyclone hollow blade, and a plurality of blade injection holes are uniformly arranged on the left and right side walls close to the other end of each cyclone hollow blade in the radial direction.

[0011] The channel connected with the powder supply chamber, the powder fluidization chamber, the cyclone flat section, the cyclone hollow blade and the plurality of blade injection holes is a powder fuel channel.

[0012] The present application also has the following technical features:

[0013] The side wall of the powder supply chamber is not in contact with the powder supply combustion chamber shell, and the gap between the powder supply combustion chamber shell and the side wall of the powder supply chamber is a first annular pressurized air supply gap.

[0014] The side wall of the powder fluidization chamber is not in contact with the powder supply combustion chamber shell, and the gap between the powder supply combustion chamber shell and the side wall of the powder fluidization chamber is a second annular pressurized air supply gap.

[0015] The channel connected with the first annular pressurized air supply gap and the second annular pressurized air supply gap is an annular pressurized air supply channel.

[0016] The annular pressurized air supply channel is connected with each blade injection hole.

[0017] The channel connected with the annular pressurized air supply channel, the plurality of blade injection holes, the cyclone hollow blade and the cyclone flat section is a first powder fluidization air channel.

[0018] Preferably, the shape of the powder fluidization chamber converges from left to right, and the side wall of the powder fluidization chamber is uniformly provided with a plurality of powder fluidization small holes in the circumferential direction, and each powder fluidization small hole is connected with the annular pressurized air supply channel.

[0019] The channel connected with the annular pressurized air supply channel and the plurality of powder fluidization small holes is a second powder fluidization air channel.

[0020] Preferably, the convergence angle of the side wall of the powder fluidization chamber is 45°-60°.

[0021] Preferably, the shape of the powder supply combustion chamber shell at the powder fluidization chamber section is convergent from left to right, and the convergent angle of the side wall of the powder supply combustion chamber shell at the powder fluidization chamber section is consistent with the convergent angle of the side wall of the powder fluidization chamber.

[0022] The shape of the powder supply combustion chamber shell at the cyclone section is straight from left to right.

[0023] The side wall of the powder supply combustion chamber shell at the right end of the cyclone section is a convergent section side wall at the right end of the cyclone, and the shape of the convergent section side wall at the right end of the cyclone is convergent from left to right.

[0024] The powder supply combustion chamber shell at the right end of the convergent section side wall at the right end of the cyclone is an expansion section side wall at the left end of the combustion chamber.

[0025] Preferably, the convergent angle of the convergent section side wall at the right end of the cyclone is 45°.

[0026] The expansion angle of the expansion section side wall at the left end of the combustion chamber is 45°-75°.

[0027] Specifically, the cyclone further comprises a first side wall arranged in the radial direction, and the first side wall is sealingly and fixedly connected with the powder supply combustion chamber shell.

[0028] The first side wall is located at the right side of the hollow blade of the cyclone.

[0029] The first side wall is uniformly provided with a plurality of side wall injection holes penetrating through the left and right side walls in the circumferential direction, and each side wall injection hole is in communication with a blade injection hole.

[0030] The direction of the side wall injection hole has an inclination angle compared with the axial direction.

[0031] The inclination angle is a single inclination angle or a composite inclination angle.

[0032] Preferably, the direction of each hollow blade of the cyclone has an inclination angle compared with the X-axis direction, and the angle of each hollow blade of the cyclone is 35°-60°.

[0033] The direction of each blade injection hole is consistent with the direction of the hollow blade of the cyclone.

[0034] Preferably, the right end of the straight section of the cyclone is a plug with an internal cavity, the left end of the plug is detachably connected with the right end of the straight section of the cyclone, and the inside of the straight section of the cyclone is in communication with the inside of the plug.

[0035] The right end of the plug is in the shape of a streamline.

[0036] The plug and each hollow vane of the swirler are fixedly connected, the hollow vane of the swirler is fixedly connected to the plug at an open end, and the interior of the plug is connected with the interior of the hollow vane of the swirler.

[0037] Preferably, the powder supply combustion chamber shell is provided with an annular groove in the circumferential direction of the hollow vane segment, and a detachable groove-shaped annular shell is arranged in the annular groove.

[0038] Compared with the prior art, the present application has the following technical effects:

[0039] (I) The present application selects the swirled flow as a way of strengthening mixing, designs a powder supply device with a swirler, and the existence of the swirled flow helps the mixing of the metal powder and the air, improves the uniformity of the spatial distribution of the powder fuel downstream of the powder supply device, and further improves the ignition performance and self-sustaining combustion performance of the powder fuel ramjet.

[0040] (II) The present application adopts a multi-point fuel injection scheme, and the powder fuel can be injected into the interior of the swirled flow air from the blade injection hole and the side wall injection hole, which helps to improve the mixing performance of the powder fuel and the swirled flow air. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a sectional view of the device in the present application with a vertical plane where the axial center line is located as a section.

[0042] Figure 2 It is a sectional view of the device in the present application with a vertical plane where the axial center line is located as a section. Figure 1 It is an enlarged view of the A position in the figure.

[0043] Figure 3 It is a right view of the device in the present application.

[0044] Figure 4 It is a right view of the device in the present application. Figure 3 It is an enlarged view of the B position in the figure.

[0045] The meanings of the various reference numerals in the figure are as follows: 1-powder supply combustion chamber shell, 2-powder supply combustion cavity, 3-powder supply chamber, 4-powder fluidization chamber, 5-swirler, 6-combustion chamber, 7-powder supply piston, 8-annular ram air supply channel, 9-powder fluidization small hole, 10-powder fuel channel, 11-first powder fluidization air channel, and 12-second powder fluidization air channel.

[0046] 101-right end convergent section side wall of the swirler, 102-left end divergent section side wall of the combustion chamber, 103-annular groove, and 104-annular shell.

[0047] 501-straight section of the swirler, 502-hollow vane of the swirler, 503-blade injection hole, 504-first side wall, 505-side wall injection hole, and 506-plug.

[0048] 801 - first annular ram air supply gap, 802 - second annular ram air supply gap.

[0049] The specific content of the present application is further described in detail below in combination with the drawings and examples. DETAILED DESCRIPTION

[0050] It should be noted that all components and materials in the present application, such as cyclone hollow blades and powder fuel, are known in the art, and no special description is required.

[0051] In the present application, the coordinate system OXYZ is a known three-dimensional rectangular coordinate system; the X-axis is horizontal, and the direction of the X-axis is to the right; the Y-axis is vertical, and the direction of the Y-axis is forward; and the Z-axis is vertical, and the direction of the Z-axis is upward.

[0052] In the present application, the axial and horizontal directions are the same.

[0053] In accordance with the above technical solution, the specific embodiments of the present application are given below. It should be noted that the present application is not limited to the following specific embodiments, and any equivalent transformation based on the technical solution of the present application falls within the scope of protection of the present application.

[0054] Embodiment:

[0055] The present embodiment gives a powder supply device for a powder ramjet engine based on cyclone, as shown in Figure 1 The powder supply device for a powder ramjet engine based on cyclone includes a powder supply combustion chamber shell 1 open at both ends in the horizontal direction, and the cavity in the powder supply combustion chamber shell 1 is a powder supply combustion cavity 2. A powder supply chamber 3 open at both ends is coaxially sleeved at the left position in the powder supply combustion cavity 2, and a powder fluidization chamber 4 open at both ends is coaxially sleeved at the middle position in the powder supply combustion cavity 2. The right end of the powder supply chamber 3 is fixedly connected with the left end of the powder fluidization chamber 4, so that the internal cavity of the powder fluidization chamber 4 is in communication with the internal cavity of the powder supply chamber 3.

[0056] As shown in Figure 1 The right end of the powder fluidization chamber 4 is also fixedly connected with the left end of the cyclone flat section 501 of the coaxially arranged cyclone 5, so that the internal cavity of the cyclone flat section 501 is also in communication with the internal cavity of the powder fluidization chamber 4.

[0057] As shown in Figure 1 The right end of the powder fluidization chamber 4 is also fixedly connected with the left end of the cyclone flat section 501 of the coaxially arranged cyclone 5, so that the internal cavity of the cyclone flat section 501 is also in communication with the internal cavity of the powder fluidization chamber 4.

[0058] As shown in Figure 1 The internal cavity of the powder supply chamber 3 is also provided with a sealable powder supply piston 7.

[0059] As shown in Figure 2As shown, the cyclone 5 comprises a cyclone flat section 501 arranged along the axial center line and internally hollow, one end of the cyclone flat section 501 is open and the other end is closed, the left end side wall of the cyclone flat section 501 is fixedly connected with the right end side wall of the powder fluidization chamber 4, and the inside of the powder fluidization chamber 4 is also in communication with the inside of the cyclone flat section 501, as shown in Figure 3 As shown, a plurality of internally hollow cyclone hollow vanes 502 are uniformly arranged on the right end of the cyclone flat section 501 in the circumferential direction, and one end of each cyclone hollow vane 502 is fixedly connected with the cyclone flat section 501.

[0060] The end of each cyclone hollow vane 502 fixedly connected with the cyclone flat section 501 is open, and the inside of the cyclone flat section 501 is in communication with the inside of each cyclone hollow vane 502, as shown in Figure 4 As shown, a plurality of vane injection holes 503 are uniformly arranged on the left and right side walls near the other end of each cyclone hollow vane 502 in the radial direction, and each vane injection hole 503 is in communication with the combustion chamber 6.

[0061] The passages in communication with the powder supply chamber 3, the powder fluidization chamber 4, the cyclone flat section 501, the cyclone hollow vane 502 and the plurality of vane injection holes 503 are the powder fuel passages 10.

[0062] In this embodiment, the profile of the powder fuel combustion chamber shell 1 is designed according to the Mach number of the incoming flow to form a suitable fluidizing gas inlet passage to achieve the purpose of reducing the speed and increasing the pressure of the high-speed air.

[0063] In this embodiment, the number of vane injection holes 503 is 5, and the vane injection holes 503 are used to uniformly inject powder fuel in the radial direction to improve the uniformity of the distribution of powder fuel in space.

[0064] In this embodiment, the powder fluidization chamber 4 is used to fluidize the powder fuel in the powder supply chamber 3 by using the ram air entering through the powder fluidization small holes 9, so that the powder fuel has fluidity and is convenient for powder fuel supply.

[0065] In this embodiment, the powder supply piston 7 can be driven by ram air, and the powder supply piston 7 can provide powder fuel for the combustion chamber 6.

[0066] In this embodiment, the cyclone flat section 501 is used to transport the fluidized powder fuel to the vane injection holes 503 and the side wall injection holes 505.

[0067] In this embodiment, the design of the cyclone hollow vane 502 needs to meet the light-tight criterion.

[0068] As a preferred scheme of this embodiment, as shown in Figure 1As shown, the side wall of the pulverized coal supply chamber 3 does not contact the pulverized coal supply combustion chamber shell 1, and the gap between the pulverized coal supply combustion chamber shell 1 and the side wall of the pulverized coal supply chamber 3 is the first annular stamping gas supply gap 801.

[0069] like Figure 1 As shown, the side wall of the powder fluidization chamber 4 does not contact the powder supply combustion chamber shell 1, and the gap between the powder supply combustion chamber shell 1 and the side wall of the powder fluidization chamber 4 is the second annular stamping gas supply gap 802.

[0070] The channel connecting the first annular press air supply gap 801 and the second annular press air supply gap 802 is the annular press air supply channel 8.

[0071] The annular stamping air supply channel 8 is connected to the nozzle 503 of each blade.

[0072] The channel connecting the annular stamping air supply channel 8, multiple blade nozzles 503, the hollow blades of the cyclone separator 502, and the straight section of the cyclone separator 501 is the first powder fluidization air channel 11.

[0073] In this embodiment, the annular ram air supply channel 8 provides a passage for ram air, supplying air to the powder fluidization orifice 9 and the cyclone separator 5. Part of the air entering through the annular ram air supply channel 8 enters the powder fluidization chamber 4 through the powder fluidization orifice 9 for fluidizing the powdered fuel particles. The other part enters the combustion chamber 6 through the cyclone separator 5.

[0074] As a preferred embodiment of this invention, such as Figure 1 As shown, the shape of the powder fluidization chamber 4 converges from left to right. Multiple powder fluidization holes 9 are uniformly arranged along the circumference of the side wall of the powder fluidization chamber 4. Each powder fluidization hole 9 is connected to the annular pressurized air supply channel 8.

[0075] The channel connecting the annular stamping air supply channel 8 and the multiple powder fluidization orifices 9 is the second powder fluidization air channel 12.

[0076] As a preferred embodiment, the sidewall convergence angle of the powder fluidization chamber 4 is 45° to 60°.

[0077] In this embodiment, the sidewall convergence angle of the powder fluidization chamber 4 is 60°.

[0078] In this embodiment, the angle of the powder fluidization orifice 9 is a composite angle, with both the axial and radial angles of the powder fluidization orifice 9 being 10°.

[0079] As a preferred embodiment of this invention, such as Figure 1As shown, the shape of the pulverized coal combustion chamber shell 1 in the powder fluidization chamber 4 section also converges from left to right, and the convergence angle of the side wall of the pulverized coal combustion chamber shell 1 in the powder fluidization chamber 4 section is the same as the convergence angle of the side wall of the powder fluidization chamber 4.

[0080] like Figure 1 As shown, the shape of the pulverized coal combustion chamber shell 1 in the cyclone section 5 is straight from left to right.

[0081] like Figure 1 As shown, the side wall of the pulverized coal combustion chamber shell 1 at the right end of the cyclone section 5 is the right end converging section side wall 101 of the cyclone, and the shape of the right end converging section side wall 101 of the cyclone is converging from left to right.

[0082] like Figure 1 As shown, the coal supply combustion chamber shell 1 at the right end of the right-end converging section sidewall 101 of the cyclone separator is the left-end expanding section sidewall 102 of the combustion chamber.

[0083] As a preferred embodiment, the convergence angle of the right-end convergence section sidewall 101 of the hydrocyclone is 45°.

[0084] The expansion angle of the left expansion section sidewall 102 of the combustion chamber is 45° to 75°.

[0085] In this embodiment, the expansion angle of the left expansion section sidewall 102 of the combustion chamber is 45°. The function of the right convergence section sidewall 101 of the swirler and the left expansion section sidewall 102 of the combustion chamber is to provide confined space for the development of the swirling flow and the mixing of powdered fuel with air.

[0086] As a preferred embodiment of this invention, such as Figure 1 As shown, the cyclone separator 5 also includes a first sidewall 504 arranged radially, which is sealed and fixedly connected to the coal supply combustion chamber housing 1.

[0087] like Figure 2 As shown, the first sidewall 504 is located to the right of the hollow blade 502 of the hydrocyclone.

[0088] like Figure 2 As shown, the first sidewall 504 is uniformly provided with a plurality of sidewall spray holes 505 that penetrate the left and right sides along the circumference, and each sidewall spray hole 505 is connected to the blade spray hole 503.

[0089] The direction of the side wall nozzle 505 is inclined at an angle relative to the axial direction.

[0090] The tilt angle can be a single tilt angle or a compound tilt angle.

[0091] In the embodiment, the inclination angle of each side wall injection hole 505 is 45°, the number of side wall injection holes 505 is 36, and the side wall injection holes 505 are used to uniformly supply the powder fuel in the circumferential direction, thereby improving the uniformity of the distribution of the powder fuel in space.

[0092] As a preferred scheme of the embodiment, the direction of each swirler hollow blade 502 is inclined relative to the direction of the X axis, and the angle of each swirler hollow blade 502 is 35°-60°.

[0093] The direction of each blade injection hole 503 is consistent with the direction of the swirler hollow blade 502.

[0094] In the embodiment, the angle of each swirler hollow blade 502 is 40°, and the swirler hollow blade 502 is used to form a swirling flow environment downstream, thereby helping to strengthen the mixing and combustion.

[0095] As a preferred scheme of the embodiment, as shown in Figure 1 the right end of the swirler straight section 501 is a hollow plug 506, the left end of the plug 506 is detachably connected with the right end of the swirler straight section 501, and the inside of the swirler straight section 501 is in communication with the inside of the plug 506.

[0096] As shown in Figure 1 the right end of the plug 506 is streamlined.

[0097] The plug 506 is fixedly connected with each swirler hollow blade 502, the end of the swirler hollow blade 502 fixedly connected with the plug 506 is open, and the inside of the plug 506 is in communication with the inside of the swirler hollow blade 502.

[0098] In the embodiment, the plug 506 is connected with the swirler straight section 501 through threads, thereby facilitating the cleaning of the powder.

[0099] As a preferred scheme of the embodiment, as shown in Figure 2 the powder supply combustion chamber shell 1 is provided with an annular groove 103 in the circumferential direction in the swirler hollow blade 502 section, and the annular groove 103 is provided with a detachable annular shell 104 in the form of a groove.

[0100] In the embodiment, the annular shell 104 is detachable, thereby facilitating the cleaning of the powder.

Claims

1. A cyclone-based powder ramjet engine powder supply apparatus, characterized by, The utility model provides a kind of powder combustion chamber, including the powder combustion chamber shell (1) that open along transverse two ends, the cavity in the powder combustion chamber shell (1) is powder combustion cavity (2), the left part position coaxially in powder combustion cavity (2) is equipped with the powder chamber (3) that open both ends, powder combustion cavity (2) in the middle position coaxially is equipped with the powder fluidization chamber (4) that open both ends, the right end of powder chamber (3) is fixedly connected with the left end of powder fluidization chamber (4), so that the internal cavity of powder fluidization chamber (4) is connected with the internal cavity of powder chamber (3); The right end of the powder fluidization chamber (4) is also fixedly connected with the left end of the cyclone straight section (501) of the coaxially arranged cyclone (5), so that the internal cavity of the cyclone straight section (501) is also connected with the internal cavity of the powder fluidization chamber (4); The right end of the powder combustion chamber (6) is also connected with the left end of the cyclone (5), and the right end of the cyclone (5) is connected with the left end of the powder combustion chamber (6). The powder combustion chamber (6) is also provided with a combustion chamber (6) at the right part position in the powder combustion cavity (2), and the left end of the combustion chamber (6) is communicated with the right end of the cyclone (5). The powder chamber (3) is also provided with a powder piston (7) inside. The cyclone straight section (501) in the cyclone (5) is hollow inside, the left end of the cyclone straight section (501) is open and the right end is closed, a plurality of hollow cyclone hollow blades (502) are uniformly arranged on the right end of the cyclone straight section (501) in the circumferential direction, and one end of each cyclone hollow blade (502) is fixedly connected with the cyclone straight section (501). The one end of each cyclone hollow blade (502) fixedly connected with the cyclone straight section (501) is open, the internal cavity of the cyclone straight section (501) is communicated with the internal cavity of each cyclone hollow blade (502), and a plurality of blade injection holes (503) are uniformly arranged on the left and right side walls near the other end of each cyclone hollow blade (502) in the radial direction, and each blade injection hole (503) is communicated with the combustion chamber (6).

2. The cyclone-based powder ramjet engine powder supply of claim 1, wherein, The powder chamber (3), the powder fluidization chamber (4), the cyclone straight section (501), the cyclone hollow blade (502) and the plurality of blade injection holes (503) are communicated through the powder fuel channel (10). The side wall of the powder chamber (3) is not in contact with the powder combustion chamber shell (1), and the gap between the powder combustion chamber shell (1) and the side wall of the powder chamber (3) is the first annular ram air gap (801). The side wall of the powder fluidization chamber (4) is not in contact with the powder combustion chamber shell (1), and the gap between the powder combustion chamber shell (1) and the side wall of the powder fluidization chamber (4) is the second annular ram air gap (802). The first annular ram air gap (801) and the second annular ram air gap (802) are communicated through the annular ram air channel (8). The annular ram air channel (8) is communicated with each blade injection hole (503). The annular ram air channel (8), the plurality of blade injection holes (503), the cyclone hollow blade (502) and the cyclone straight section (501) are communicated through the first powder fluidization air channel (11).

3. The cyclone-based powder ramjet engine powder supply of claim 2, wherein, The shape of the powder fluidization chamber (4) is convergent from left to right, and the side wall of the powder fluidization chamber (4) is uniformly provided with a plurality of powder fluidization small holes (9) in the circumferential direction, each of the powder fluidization small holes (9) being in communication with the annular stamping air supply channel (8); The annular stamping air supply channel (8) and the plurality of powder fluidization small holes (9) are in communication with the second powder fluidization air channel (12).

4. The cyclone-based powder ramjet engine powder supply of claim 3, wherein, The convergence angle of the side wall of the powder fluidization chamber (4) is 45°-60°.

5. The cyclone-based powder ramjet engine powder supply of claim 1 wherein, The shape of the powder combustion chamber shell (1) at the powder fluidization chamber (4) section is also convergent from left to right, and the convergence angle of the side wall of the powder combustion chamber shell (1) at the powder fluidization chamber (4) section is consistent with the convergence angle of the side wall of the powder fluidization chamber (4); The shape of the powder combustion chamber shell (1) at the cyclone (5) section is straight from left to right; The side wall of the powder combustion chamber shell (1) at the right end of the cyclone (5) section is a cyclone right end convergent section side wall (101), and the shape of the cyclone right end convergent section side wall (101) is convergent from left to right; The powder combustion chamber shell (1) at the right end of the cyclone right end convergent section side wall (101) is a combustion chamber left end expansion section side wall (102).

6. The cyclone-based powder ramjet engine powder supply of claim 5, wherein, The convergence angle of the cyclone right end convergent section side wall (101) is 45°. The expansion angle of the combustion chamber left end expansion section side wall (102) is 45°-75°.

7. The cyclone-based powder ramjet engine powder supply of claim 1 wherein, The cyclone (5) further comprises a first side wall (504) arranged in the radial direction, and the first side wall (504) is sealingly and fixedly connected with the powder combustion chamber shell (1); The first side wall (504) is located at the right side of the cyclone hollow blade (502); The first side wall (504) is uniformly provided with a plurality of side wall injection holes (505) penetrating through the left and right sides in the circumferential direction, and each of the side wall injection holes (505) is in communication with the blade injection hole (503); The direction of the side wall injection hole (505) has an inclination angle compared with the axial direction; The inclination angle is a single inclination angle or a composite inclination angle.

8. The cyclone-based powder ramjet engine powder supply of claim 1, wherein, Each of the cyclone hollow blades (502) has an inclination angle compared with the X-axis direction, and the angle of each of the cyclone hollow blades (502) is 35°-60°; The direction of each of the blade injection holes (503) is consistent with the direction of the cyclone hollow blade (502).

9. The cyclone-based powder ramjet engine powder supply of claim 1 wherein, The right end of the cyclone straight section (501) is a plug (506) with an internal hollow, the left end of the plug (506) and the right end of the cyclone straight section (501) are detachably connected, and the inside of the cyclone straight section (501) is in communication with the inside of the plug (506); The right end of the plug (506) is streamlined; The plug (506) is fixedly connected with each of the cyclone hollow blades (502), one end of the cyclone hollow blade (502) fixedly connected with the plug (506) is open, and the inside of the plug (506) is in communication with the inside of the cyclone hollow blade (502).

10. The cyclone-based powder ramjet engine powder supply of claim 1 wherein, The powder supply combustion chamber shell (1) is provided with an annular groove (103) in the circumferential direction of the hollow blade (502) section of the swirler, and a groove-shaped annular shell (104) is arranged in the annular groove (103).

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