A ring-shaped solid fuel gas supply structure

Abstract

The application relates to a ring-shaped solid fuel gas supply structure which comprises: a plurality of combustion generators which are spaced apart, the combustion generators being provided with gas holes at two ends, and the combustion generators being internally provided with a central pipe which is communicated with the two gas holes at two ends; and a connecting pipe which is arranged between two adjacent combustion generators, the two ends of the connecting pipe being communicated with the gas holes of the two adjacent combustion generators respectively, so that all the combustion generators are connected in series to form a ring-shaped gas supply loop, and the connecting pipe is provided with a posture control unit connecting part. All the combustion generators are connected in series to form a ring-shaped gas supply loop, and the connecting pipe is provided with a posture control unit connecting part; twelve pipes required by originally six posture control units are greatly reduced to two, and the combustion generators are also part of the ring-shaped channel, so that the structure of the pipeline is simplified, the space occupation and the pipeline length are reduced, and the influence of pressure drop is reduced. In addition, the fuel gas of any point can reach another point in two directions and two paths, and the fuel gas can work for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thrust devices of aircraft, in particular to a ring-shaped solid fuel gas supply structure. BACKGROUND

[0002] At present, the vector thrust device refers to a propeller whose nozzle can be deflected in different directions to generate thrust in different directions. The rocket using the thrust vector technology obtains additional control moment by deflection of the tail nozzle and use of the thrust generated by the engine to realize attitude change control of the aircraft. Its outstanding feature is that the control moment is closely related to the engine and is not affected by the attitude of the aircraft itself.

[0003] In some related technologies, the solid vector thrust device uses the gas generated by the solid propellant as the working medium, has the advantages of small volume, constant pressure storage, maintenance-free, etc., and has high pressure and large thrust, so that the large attitude orbiting of the aircraft can be realized under the condition of the same space structure mode. The solid vector thrust device is usually installed in the annular space range between the engine nozzle and the cabin section. The solid vector thrust device is composed of two fuel generators and six attitude control units. The fuel generator and the six attitude control units share the channel. The throat area of the thrust regulator is adjusted to realize the regulation and control of the thrust. The six attitude control units are arranged in different directions. The three-channel control of pitch, yaw and roll is realized by adjusting the opening and closing of the six attitude control units. However, the following problems exist in the installation and use process:

[0004] (1) When the two fuel generators are connected with the six attitude control units, and considering that each attitude control unit needs to have an air inlet pipe and an air outlet pipe connected with a fuel generator and communicated, a total of twelve pipes are needed. The space occupied by the twelve pipes in the annular space range between the engine nozzle and the cabin section is relatively large, and the system pressure drop is large due to the long pipe.

[0005] (2) Due to the large number of twelve pipes, the installation is more troublesome, and in the running process, since the gas flow direction of the air inlet pipe and the air outlet pipe is fixed, when the air inlet pipe or the air outlet pipe corresponding to one of the attitude control units fails, the attitude control unit cannot work, and the reliability is poor. SUMMARY

[0006] The embodiment of the present application provides a ring-shaped solid fuel gas supply structure to solve the problems of complex corresponding pipe of the fuel generator and the attitude control unit and occupied installation space in the related art.

[0007] In a first aspect, a ring-shaped solid fuel gas supply structure is provided, comprising:

[0008] a plurality of fuel generators are distributed at intervals, both ends of the fuel generator are provided with air holes, and the inside of the fuel generator is provided with a central pipe communicated with both air holes at both ends;

[0009] And, a connecting pipe is arranged between two adjacent combustion engines, two ends of the connecting pipe are communicated with the air holes of the two adjacent combustion engines respectively, so that all the combustion engines are connected in series to form a ring-shaped propellant supply circuit, and a posture control unit connecting part is arranged on the connecting pipe.

[0010] In some embodiments, the combustion engine further comprises:

[0011] A body shell, the center pipe is located inside the body shell, and a propellant storage space is formed between the center pipe and the inner wall of the body shell;

[0012] A high-temperature filter is installed at both ends of the center pipe;

[0013] A ring-shaped ignition propellant box is installed on the air hole and communicated with the propellant storage space;

[0014] A top cover is installed at both ends of the body shell and fixes the high-temperature filter and the ring-shaped ignition propellant box on the body shell.

[0015] In some embodiments, the body shell, the top cover and the center pipe are all provided with a thermal insulation layer.

[0016] In some embodiments, the connecting pipe is provided with a high-temperature compensator.

[0017] In some embodiments, the high-temperature compensator is sleeved on the connecting pipe and comprises two fixed sleeve heads, and a metal bellows is connected between the two fixed sleeve heads.

[0018] In some embodiments, a posture control unit is further installed on the posture control unit connecting part.

[0019] In some embodiments, the posture control unit comprises:

[0020] A nozzle;

[0021] A valve is installed on the nozzle and controls the throat size of the nozzle and realizes thrust adjustment.

[0022] In some embodiments, the number of nozzles is three, the extension lines of the central axes of two of the nozzles are coaxially arranged, and the extension line of the central axis of the remaining one nozzle is perpendicular to the extension lines of the central axes of the other two nozzles.

[0023] In some embodiments, the posture control unit further comprises an actuator connected with the valve, and the actuator controls the valve to adjust the throat area size of the nozzle.

[0024] In some embodiments, a fixing block is further included, the connecting pipe passes through the fixing block, and the fixing block is used for being installed on the main engine nozzle.

[0025] The technical scheme provided by the application has the beneficial effects of:

[0026] The solid fuel gas supply structure provided by the embodiment of the application is annular. The multiple fuel generators are arranged at intervals, the fuel generators are provided with gas holes at two ends, and the fuel generators are provided with a central pipe which is in communication with the two gas holes at two ends. A connecting pipe is arranged between the two adjacent fuel generators, and the two ends of the connecting pipe are in communication with the gas holes of the two adjacent fuel generators, so that all the fuel generators are connected in series to form an annular gas supply loop, and the connecting pipe is provided with a posture control unit connecting part. The twelve pipes required by the six posture control units are greatly reduced to two, and the fuel generator itself is also part of the annular channel, so that the structure of the pipeline is simplified, the space occupation and the length of the pipeline are reduced, and the influence of pressure drop is reduced.

[0027] In addition, since the fuel generator is provided with the central pipe, the gas path flows from the inside and participates in the entire annular gas supply loop, so that the fuel gas can flow to each component from any one of the two ends of the central pipe, that is, the fuel gas at any point reaches another point in two directions and two paths, and the fuel gas can work for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 The schematic diagram of the annular solid fuel gas supply structure provided by the embodiment of the application is shown in the figure.

[0030] Figure 2 The schematic diagram of the annular solid fuel gas supply structure provided by the embodiment of the application is shown in the figure.

[0031] Figure 3 The schematic diagram of the annular solid fuel gas supply structure provided by the embodiment of the application is shown in the figure.

[0032] Figure 4 The schematic diagram of the high-temperature compensator provided by the embodiment of the application is shown in the figure.

[0033] Figure 5 The internal structure schematic diagram of the fuel generator provided by the embodiment of the application is shown in the figure.

[0034] In the figure: 1, combustor; 10, center tube; 11, body shell; 12, high-temperature filter; 13, annular ignition powder box; 14, top cover; 15, powder storage space; 2, connecting pipe; 3, high-temperature compensator; 30, fixed sleeve head; 31, metal bellows; 4, engine nozzle; 5, attitude control unit; 50, nozzle; 51, valve; 52, actuator. DETAILED DESCRIPTION

[0035] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] The embodiments of the present application provide a ring-shaped solid fuel gas supply structure to solve the problems of complex pipelines corresponding to the combustor and the attitude control unit and the occupied installation space in the related art.

[0037] Please refer to Figure 1 , Figure 2 and Figure 5 , a ring-shaped solid fuel gas supply structure includes a connecting pipe 2 and a plurality of combustors 1, wherein the plurality of combustors 1 are distributed at intervals, both ends of the combustor 1 are provided with gas holes, and the inside of the combustor 1 is provided with a center tube 10 which is in communication with the two gas holes at both ends respectively.

[0038] The connecting pipe 2 is arranged between the two adjacent combustors 1, and both ends of the connecting pipe 2 are in communication with the gas holes of the two adjacent combustors 1 respectively, so that all the combustors 1 are connected in series to form a ring-shaped gas supply circuit, and the connecting pipe 2 is provided with an attitude control unit connecting part.

[0039] The gas supply structure formed by the above structure greatly reduces the twelve pipes required by the original six attitude control units 5 to two, and the combustor 1 itself is also part of the ring-shaped channel, thereby simplifying the structure of the pipeline, reducing the space occupation and the length of the pipeline, and reducing the influence of pressure drop, thereby simplifying the number of system components from the traditional system, saving the installation space, and facilitating the installation of the gas supply structure in the ring-shaped space of the engine nozzle 4.

[0040] As shown in Figure 1 , the six attitude control units 5 corresponding to the two combustors 1 are connected, and the twelve pipes required by the scheme of the present application can also be greatly reduced to four, because two pipes are additionally provided considering that the attitude control unit connecting part also needs two pipes.

[0041] The combustor 1 can be bidirectional due to the arrangement of the center tube 10 and the gas hole, and the combustion structure of the center tube of the combustor 1 can ensure a constant flow of high-temperature and high-pressure gas during the operation of the entire combustor, providing a stable gas working medium source for the solid attitude control unit. On the other hand, the combustor 1 itself is also part of the gas supply channel, and the gas can flow to each component from the left or right side of the center tube 10, which can work for a long time and solve the problem of limited working time caused by the high lower limit of the propellant burning rate.

[0042] That is, due to the center tube 10 of the combustor 1, the gas path flows from the inside and participates in the entire ring-type gas supply loop, so that the gas can flow to each component from either end of the center tube 10, the unified management of the gas is realized, that is, the gas from any point to another point has two directions and two paths, and the gas can work for a long time. This advantage can be explained with reference to Figure 1

[0043] When one of the attitude control units 5 corresponding to the gas inlet pipe or the gas outlet pipe fails, the gas flow line is switched from the original gas path mark A to the gas path mark B, and the attitude control unit 5 can work normally, so that the gas supply structure of the gas path is relatively stable, and the fault tolerance is high.

[0044] In some preferred embodiments, the combustor 1 has the following arrangement for its specific structure, and the combustor 1 further comprises a body shell 11, a high-temperature filter 12, a ring-shaped ignition powder box 13, and a top cover 14.

[0045] The center tube 10 is located inside the body shell 11 and forms a storage space 15 between the center tube 10 and the inner wall of the body shell 11 for storing fixed fuel;

[0046] The high-temperature filter 12 is installed at both ends of the center tube 10; the ring-shaped ignition powder box 13 is installed on the gas hole and communicates with the storage space 15; and the top cover 14 is installed at both ends of the body shell 11 and fixes the high-temperature filter 12 and the ring-shaped ignition powder box 13 on the body shell 11.

[0047] ​The above structure realizes the front and rear gas outlet of the combustion engine 1, and the internal design of the charge of the end face combustion adopts the center tube 10 form of the gas guide channel, and the gradual change type heat insulation is adopted to prevent the abnormal combustion of the propellant column, the center tube adopts the C / C tube to reduce the erosion of the heat insulation, the end face combustion structure containing the center tube can ensure the constant flow of high temperature and high pressure gas during the working period of the whole combustion engine 1, and provides a stable gas working medium source for the system, and on the other hand, the combustion engine 1 itself is also part of the gas supply channel, the gas can pass from the left side or the right side of the center tube 10 to each component, and can work for a long time, solving the problem that the working time is limited due to the small thickness and the high lower limit of the propellant burning rate; the working mode that multiple combustion engines 1 connected in a ring can work and supply gas at the same time, meets the demand of small structure space, large combustion surface and large impulse. The high temperature filter 12, the annular ignition powder box 13 and the top cover 14 also have the effect of preventing the displacement of the center tube 10 from changing.

[0048] Further, the inner wall of the center tube 10 is provided with a heat insulation layer, which can effectively avoid the inner hole combustion; the body shell 11 and the top cover 14 are also provided with heat insulation layers for heat insulation.

[0049] As shown in Figure 3 , in some preferred embodiments, the connecting pipe 2 is provided with a high temperature compensator 3, which has the effect of releasing the structural deformation caused by large temperature difference working; meeting the demand of high precision installation of the valve position of the system, considering the position deviation caused by the assembly of the complex structure, simplifying the assembly, the high temperature compensator 3 can also release the structural deformation caused by the high temperature working of the system, so that the system can work reliably.

[0050] Further, the high temperature compensator 3 can be a mature sold product, or it can be the structure given in the embodiment, which is:

[0051] The high temperature compensator 3 is sleeved on the connecting pipe 2, and it includes two fixed sleeve heads 30, and the two fixed sleeve heads 30 are connected with a metal bellows 31, so that the structure is adapted to the bidirectional flow of the gas, and the erosion of the gas to the compensator is reduced.

[0052] In some preferred embodiments, as shown in Figure 3 , the solid gas supply structure further includes an attitude control unit 5 installed on the attitude control unit connecting part, the combustion engine 1 shares the channel with the two attitude control units 5, the thrust is adjusted by adjusting the throat diameter area of the attitude control unit 5, and the two attitude control units 5 are arranged in different directions, and the control of pitching, yawing and rolling is realized by adjusting the opening and closing of the two attitude control units 5.

[0053] The attitude control unit 5 specifically includes a nozzle 50 and a valve 51, the valve 51 is installed on the nozzle 50 and controls the throat size of the nozzle 50 to realize the thrust adjustment, and the attitude control is realized by the combination of multiple nozzles 50.

[0054] Furthermore, the number of the nozzles 50 is three. The extension lines of the central axes of two of the nozzles 50 are coaxially arranged, and the extension line of the central axis of the remaining one nozzle 50 is perpendicular to the extension lines of the central axes of the other two nozzles 50. With such an arrangement, when the two combustors 1 work simultaneously, it is possible to achieve independent supply of a large air volume by 6 valves 51, and the outlet directions of the valves 51 are arranged in a "plus" shape, in pairs of two, and all the valves 51 share 2 combustors; the "plus" shape arrangement of the 6 valves 51 is the minimum number of valves 51 to meet the multi-channel independent control, which can effectively simplify the system structure. Sharing the combustors 1 can instantaneously provide a large amount of gas, which is beneficial to improving the thrust level of the system in a small space, and is also beneficial to centralized energy management and overall application.

[0055] In some preferred embodiments, the attitude control unit 5 further includes an actuator 52. The actuator 52 is connected to the valve 51, and the actuator 52 controls the valve 51 to adjust the throat area of the nozzle 50. This enables the 6 valves 51 to work together, achieving a consistent equivalent throat diameter and maintaining a constant system pressure. Each pair of valves 51 can output a thrust curve with a consistent trend according to the control instruction; while meeting the continuous adjustment of the thrust of each channel from 0 to 100%, the system adapts to the change in flow demand caused by the change in thrust and the change in the gas supply flow that the burning rate cannot adapt to adjust, and maintains the stability of the system pressure; it realizes the coordination and consistency of the system exhaust and the output thrust when the 6 valves 51 work together, avoids exhaust interference, and makes the equivalent thrust of the system consistent with the demand.

[0056] In some preferred embodiments, the solid gas supply structure further includes a fixing block. The connecting pipe 2 passes through the fixing block, and the fixing block is used to be installed on the main engine nozzle 4. The setting of the fixing block facilitates the fixed installation in the annular space of the main engine nozzle 4.

[0057] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0058] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0059] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ring-shaped solid fuel gas supply structure, characterized in that, It includes: Multiple igniters (1) are spaced apart. Each igniter (1) has air holes at both ends and a central tube (10) with both ends connected to the two air holes respectively inside the igniter (1). In addition, a connecting pipe (2) is arranged between two adjacent igniters (1), and the two ends of the connecting pipe (2) are respectively connected to the air holes of the two adjacent igniters (1) so that all the igniters (1) are connected in series to form a ring-shaped air supply circuit, and the connecting pipe (2) is provided with a posture control unit connection part. The igniter (1) further includes: a main body shell (11), the central tube (10) being located inside the main body shell (11) and forming a drug storage space (15) between it and the inner wall of the main body shell (11); a high-temperature filter (12), which is installed at both ends of the central tube (10); an annular ignition box (13), which is installed on the air hole and communicates with the drug storage space (15); and a top cover (14), which is installed at both ends of the main body shell (11) and fixes the high-temperature filter (12) and the annular ignition box (13) to the main body shell (11); The connecting pipe (2) is provided with a high temperature compensator (3); the high temperature compensator (3) is sleeved on the connecting pipe (2) and includes two fixing sleeves (30), and a metal corrugated pipe (31) is connected between the two fixing sleeves (30).

2. The annular solid gas supply structure as described in claim 1, characterized in that: The outer shell (11), top cover (14) and central tube (10) are all provided with heat insulation layers.

3. The annular solid gas supply structure as described in claim 1, characterized in that: It also includes an attitude control unit (5) installed on the attitude control unit connection.

4. The annular solid gas supply structure as described in claim 3, characterized in that, The attitude control unit (5) includes: Nozzle (50); A valve (51) is installed on the nozzle (50) and controls the throat size of the nozzle (50) and achieves thrust adjustment.

5. The annular solid gas supply structure as described in claim 4, characterized in that: The number of nozzles (50) is three, of which the extension lines of the central axis of two nozzles (50) are coaxially arranged, and the extension line of the central axis of the remaining nozzle (50) is perpendicular to the extension lines of the central axis of the other two nozzles (50).

6. The annular solid gas supply structure as described in claim 4, characterized in that: The attitude control unit (5) also includes an actuator (52) connected to the valve (51), which controls the valve (51) to adjust the throat area of ​​the nozzle (50).

7. The annular solid gas supply structure as described in claim 1, characterized in that: It also includes a fixing block, through which the connecting pipe (2) passes, and the fixing block is used to install on the main engine nozzle (4).

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