Fuel gas generator capable of adapting to high overload and solid rocket ramjet engine

Abstract

The invention provides a fuel gas generator capable of adapting to high overload and a solid rocket ramjet engine, and relates to the technical field of solid rocket ramjet engines, the fuel gas generator comprises a shell filled with grains, and a gas outlet is formed in one end of the shell; a buffering assembly is further arranged and comprises an elastic part and a limiting part which are fixed to each other, the limiting part abuts against the inner wall of the end, close to the air outlet, of the shell, the elastic part is arranged on the side, away from the air outlet, of the limiting part and abuts against the grain, and the elastic part and the limiting part are jointly provided with a first channel; by arranging the elastic part and the limiting part, the limiting part limits the elastic part, the elastic part buffers the grain through elastic deformation, the first channel communicates with the space on one side of the grain and the air outlet and is used for igniting the grain and circulating fuel gas after launching, and the elastic part is pressed to deform into a closed plane structure; the first channel is cut off, meanwhile, the end face of the grain can be evenly stressed, compression stress borne by the grain is reduced, and the whole structure of the grain is prevented from being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of solid rocket ramjet engines, and in particular to a gas generator and solid rocket ramjet engine that can adapt to high overload. Background Art

[0002] A solid rocket ramjet is a device that generates fuel gas by igniting solid fuel in a gas generator, and then introduces the fuel gas and air into an afterburner for secondary combustion to generate thrust. Due to its simple structure, it has broad application prospects when used in accelerating artillery ammunition without any stage change problems.

[0003] Artillery ammunition will generate a huge instantaneous acceleration at the moment of firing, which will cause the end face of the solid fuel column to be subjected to great pressure. When the end face of the grain column is unevenly pressurized, it will generate great stress, thereby destroying the overall structure of the grain column. Since the combustion mode of the grain column is to move from its burning end face to the other end, when its overall structure is destroyed, the combustion surface will expand and a large amount of fuel gas will be generated in a short period of time. In severe cases, it will cause an explosion, posing a major safety hazard. Summary of the invention

[0004] The purpose of this application is to provide a gas generator and solid rocket ramjet engine that can adapt to high overloads in order to solve the above problems.

[0005] In a first aspect, the present application provides a gas generator capable of adapting to high overload, comprising: An outer shell, wherein the inner part of the outer shell is filled with a medicine column and an air outlet is formed at one end of the outer shell; A buffer component, the buffer component includes an elastic member and a limit member fixed to each other, the limit member is arranged in the shell, one end of which abuts against the inner wall of the shell near the air outlet, and the elastic member is arranged on the side of the limit member away from the air outlet, and the end of the limit member away from the limit member abuts against the medicine column; the elastic member and the limit member are jointly provided with a first channel for connecting the space on one side of the medicine column with the air outlet.

[0006] According to the technical solution provided in certain embodiments of the present application, the buffer component has a first working state and a second working state. When in the first working state, the first channel connects the space on one side of the medicine column with the air outlet; when in the second working state, the elastic part is compressed and deformed, and the first channel is isolated.

[0007] According to the technical solutions provided in some embodiments of the present application, a first through hole is provided at the center of the elastic member, and a second through hole corresponding to and connected to the first through hole is provided on the limiting member.

[0008] According to the technical solution provided in certain embodiments of the present application, the limiting member includes a first part and a second part that are integrally connected, the first part is provided with the second through hole, and the second part is provided with a third through hole that is correspondingly connected to the second through hole.

[0009] According to the technical solution provided in certain embodiments of the present application, a plurality of first fan-shaped holes are opened on the elastic member around the first through hole, a plurality of second fan-shaped holes correspondingly connected to the first fan-shaped holes are opened on the first part, a plurality of third fan-shaped holes correspondingly connected to the second fan-shaped holes are opened on the second part, and the plurality of third fan-shaped holes are connected to the third through hole together.

[0010] According to the technical solution provided in certain embodiments of the present application, a plurality of first arc-shaped holes are opened on the elastic member around the plurality of first fan-shaped holes, and the first arc-shaped holes correspond one-to-one with the first fan-shaped holes. A plurality of second arc-shaped holes corresponding to the first arc-shaped holes are opened on the first part, and the first arc-shaped holes are connected with the third fan-shaped holes through the second arc-shaped holes.

[0011] According to the technical solutions provided in certain embodiments of the present application, the elastic member is made of rubber material, and the limiting member is made of metal material.

[0012] According to the technical solution provided in certain embodiments of the present application, a heat insulating layer is further provided between the limit member and the inner wall of the outer shell near one end of the air outlet, and an air guide cavity is formed inside the heat insulating layer, and the air guide cavity is respectively connected to the first channel and the air outlet.

[0013] According to the technical solution provided in some embodiments of the present application, a nozzle is provided at the air outlet.

[0014] In a second aspect, the present application provides a solid rocket ramjet engine, comprising a gas generator as described above that can adapt to high overload.

[0015] Compared with the prior art, the present application has the following beneficial effects: the present application provides a gas generator and a solid rocket ramjet engine that can adapt to high overload, the gas generator comprises an outer shell, the inner shell is filled with a propellant column, and an air outlet is provided at one end of the outer shell; a buffer assembly is also provided in the outer shell, the buffer assembly comprises an elastic member and a limit member fixed to each other, one end of the limit member abuts against the inner wall of the outer shell at one end close to the air outlet, the elastic member is provided on the side of the limit member away from the air outlet, and the end thereof away from the limit member abuts against the propellant column; a buffer assembly is provided on the elastic member and the limit member together There is a first channel for connecting the space on one side of the charge and the air outlet; by arranging an elastic member and a limit member, the limit member abuts against the inner wall of the shell to limit the elastic member, and the elastic member cushions the charge through its own elastic deformation. The first channel connects the space on one side of the charge and the air outlet, and is used for igniting the charge and circulating the fuel gas after firing. The elastic member is compressed and deformed into a closed planar structure, which can isolate the first channel while making the end face of the charge evenly stressed, thereby reducing the compressive stress on the charge and avoiding damage to the overall structure of the charge.

[0016] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic cross-sectional view of a gas generator capable of adapting to high overload provided in Example 1 of the present application; Figure 2 A schematic cross-sectional view of a buffer assembly of a gas generator that can adapt to high overload provided in Example 1 of the present application; Figure 3A top view of an elastic member of a gas generator capable of adapting to high overload provided in Example 1 of the present application; Figure 4 A top view of a limiter for a gas generator that can adapt to high overload provided in Example 1 of the present application.

[0019] The text annotations in the figure represent: 1. Shell; 2. Grain; 3. Elastic member; 4. Stop member; 5. Insulation layer; 6. Nozzle; 51. Air guide cavity; 301. First through hole; 302. First fan-shaped hole; 303. First arc-shaped hole; 311. First inner ring layer; 312. First intermediate ring layer; 313. First outer ring layer; 314. First connecting part; 401. Second through hole; 402. Second fan-shaped hole; 403. Second arc-shaped hole; 404. Third through hole; 405. Third fan-shaped hole; 411. Second inner ring layer; 412. Second intermediate ring layer; 413. Second outer ring layer; 414. Second connecting part; 415. Third annular layer; 416. Third connecting part. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] Example 1 As mentioned in the background technology, in view of the problems existing in the prior art, the present application provides a gas generator capable of adapting to high overload, comprising: A shell 1 is filled with a medicine column 2, and one end of the shell 1 is provided with an air outlet; The buffer assembly includes an elastic member 3 and a limit member 4 fixed to each other. The limit member 4 is arranged in the shell 1, and one end of the limit member 4 abuts against the inner wall of the shell 1 near the air outlet. The elastic member 3 is arranged on the side of the limit member 4 away from the air outlet, and the end of the limit member 4 away from the limit member 4 abuts against the medicine column 2; the elastic member 3 and the limit member 4 are jointly provided with a first channel for connecting the space on one side of the medicine column 2 with the air outlet.

[0023] In a preferred embodiment, the buffer assembly has a first working state and a second working state. When in the first working state, the first channel connects the space on one side of the medicine column 2 with the air outlet; when in the second working state, the elastic member 3 is deformed under pressure and the first channel is blocked.

[0024] In a preferred embodiment, the elastic member 3 is made of rubber material, and the limiting member 4 is made of metal material.

[0025] like Figure 1 As shown, the shell 1 is similar to a cylindrical shell, and is filled with a charge 2. The interior of the shell 1 is used for the charge 2 to burn to generate fuel gas, and the fuel gas can be discharged from the gas outlet at one end of the shell 1; the elastic member 3 and the limit member 4 are both similar to cylindrical structures. The elastic member 3 is made of natural rubber material and is vulcanized through a mold, and the limit member 4 is made of metal material. The end face of the limit member 4 is sandblasted to change the surface roughness to facilitate the adhesion and fixation of the elastic member 3; the elastic member 3 and the limit member 4 have multiple hollow structures, and the multiple hollow structures are correspondingly connected to form multiple first channels, and the first channels are used for igniting the charge 2 and circulating the fuel gas generated by the combustion of the charge 2.

[0026] When the shell is fired, the shell 1 obtains a great instantaneous acceleration, and the charge 2 in the shell 1 compresses the elastic member 3 due to inertia. The elastic member 3 is deformed to buffer the compressive stress on the charge 2. At the same time, due to the action of the limiter 4, the two ends of the elastic member 3 are subjected to axial pressure and then radially deformed. However, due to the limiting effect of the shell 1, the radial deformation of the elastic member 3 will change its own hollow structure, cut off the first channel, and form a closed plane structure, so that the end face of the charge 2 can be evenly stressed. After the shell is fired, the elastic member 3 returns to its original shape due to its own characteristics, and the first channel connects the space on one side of the charge 2 and the air outlet.

[0027] By arranging the elastic member 3 and the limiting member 4, the limiting member 4 abuts against the inner wall of the shell 1 to limit the elastic member 3, and the elastic member 3 cushions the charge 2 through its own elastic deformation. The first channel connects the space on one side of the charge 2 and the gas outlet, and is used for igniting the charge 2 and circulating the fuel gas after firing. The elastic member 3 is compressed and deformed into a closed planar structure, which can isolate the first channel while making the end face of the charge 2 evenly stressed, thereby reducing the compressive stress on the charge 2 and avoiding the overall structure of the charge 2 from being destroyed.

[0028] In a preferred embodiment, a first through hole 301 is formed at the center of the elastic member 3 , and a second through hole 401 corresponding to and communicating with the first through hole 301 is formed on the limiting member 4 .

[0029] In a preferred embodiment, the limiting member 4 includes a first portion and a second portion that are integrally connected, the first portion is provided with a second through hole 401 , and the second portion is provided with a third through hole 404 that is correspondingly connected to the second through hole 401 .

[0030] In a preferred embodiment, a plurality of first fan-shaped holes 302 are provided on the elastic member 3 around the first through hole 301, a plurality of second fan-shaped holes 402 correspondingly connected to the first fan-shaped holes 302 are provided on the first portion, a plurality of third fan-shaped holes 405 correspondingly connected to the second fan-shaped holes 402 are provided on the second portion, and the plurality of third fan-shaped holes 405 are collectively connected to the third through hole 404.

[0031] In a preferred embodiment, a plurality of first arc-shaped holes 303 are provided on the elastic member 3 around the plurality of first fan-shaped holes 302, and the first arc-shaped holes 303 correspond one-to-one to the first fan-shaped holes 302. A plurality of second arc-shaped holes 403 corresponding to and connected with the first arc-shaped holes 303 are provided on the first portion, and the first arc-shaped holes 303 are connected with the third fan-shaped holes 405 through the second arc-shaped holes 403.

[0032] like Figure 2 and Figure 3 As shown, the elastic member 3 includes three concentrically arranged annular structures, which are respectively a first inner ring layer 311, a first intermediate ring layer 312 and a first outer ring layer 313 from the inside to the outside. The first inner ring layer 311, the first intermediate ring layer 312 and the first outer ring layer 313 are commonly connected with a plurality of first connecting portions 314 distributed along the circumferential direction of the three. The plurality of first connecting portions 314 extend from the first inner ring layer 311 to the first outer ring layer 313 along the radial direction of the elastic member 3; the first inner ring layer 311 has a first through hole 301, the first inner ring layer 311, the first intermediate ring layer 312 and the plurality of first connecting portions 314 are jointly surrounded to form a plurality of first fan-shaped holes 302, the first intermediate ring layer 312, the first outer ring layer 313 and the plurality of first connecting portions 314 are jointly surrounded to form a plurality of first arc-shaped holes 303; in this embodiment of the present application, the diameter of the elastic member 3 is 114 mm, the height is 10 mm, and the diameter of the first through hole 301 is 20 mm.

[0033] like Figure 2 and Figure 4As shown, the limiting member 4 includes a first part and a second part which are integrally connected. The first part has the same structure as the elastic member 3 and also includes three concentrically arranged annular structures. The three annular structures are respectively a second inner ring layer 411, a second intermediate ring layer 412 and a second outer ring layer 413 from the inside to the outside. The second inner ring layer 411, the second intermediate ring layer 412 and the second outer ring layer 413 are commonly connected with a plurality of second connecting portions 414 distributed along the circumferential direction of the three. The plurality of second connecting portions 414 extend from the second inner ring layer 411 to the second outer ring layer 413 along the radial direction of the limiting member 4 respectively. The second inner ring layer 411 has a second through hole 401. The second inner ring layer 411, the second intermediate ring layer 412 and the plurality of second connecting portions 414 are jointly surrounded to form a plurality of second fan-shaped holes 402. The second intermediate ring layer 412, the second outer ring layer 413 and the plurality of second connecting portions 414 are 4 together form a plurality of second arc-shaped holes 403; the second part includes a third annular layer 415 and a plurality of third connecting parts 416, the plurality of third connecting parts 416 are distributed along the circumference of the stopper 4, the plurality of third connecting parts 416 extend from the third annular layer 415 along the radial direction of the stopper 4 to the center of the stopper 4, the plurality of third connecting parts 416 are away from one end of the third annular layer 415 to form a third through hole 404, the third annular layer 415 and the plurality of third connecting parts 416 are together to form a plurality of third fan-shaped holes 405, the third through hole 404 is respectively connected with the plurality of third fan-shaped holes 405, the third through hole 404 is similar to a bowl-shaped structure, the inside of which is used to set the ignition fuse; in this embodiment of the present application, the diameter of the stopper 4 is 114 mm, and the diameter of the second through hole 401 is 20 mm; the height of the first part is 8 mm, and the height of the second part is 6 mm.

[0034] In the axial direction of the buffer assembly, the projections of the first inner ring layer 311 and the second inner ring layer 411 completely overlap, the projections of the first intermediate ring layer 312 and the second intermediate ring layer 412 completely overlap, the projections of the first outer ring layer 313 and the second outer ring layer 413 completely overlap, the projections of the first connecting portion 314 and the second connecting portion 414 completely overlap, and the corresponding multiple through holes, multiple arc holes and multiple fan-shaped holes on the elastic member 3 and the limiting member 4 form multiple first channels; when the shell is fired, the elastic member 3 is subjected to axial pressure to produce radial deformation, thereby forming a closed planar structure, covering the second through hole 401, the second fan-shaped hole 402 and the second arc hole 403 of the first part, so that the multiple first channels are separated.

[0035] In a preferred embodiment, a heat insulating layer 5 is provided between the stopper 4 and the inner wall of the housing 1 near the air outlet, and an air guiding cavity 51 is formed inside the heat insulating layer 5. The air guiding cavity 51 is respectively connected to the first channel and the air outlet.

[0036] like Figure 1As shown, a heat insulating layer 5 is further provided between the limit member 4 and the inner wall of the outer shell 1 near the gas outlet. The heat insulating layer 5 is made of a high-silicon oxide material, which is resistant to high temperature and erosion, and can more fully withstand the erosion and ablation during the gas generation process to ensure the overall stability of the gas generator; the gas guide cavity 51 is approximately a hemispherical structure, and its open end near the side of the limit member 4 is correspondingly connected to the third through hole 404 and multiple third fan-shaped holes 405, and the other end is connected to the gas outlet.

[0037] In a preferred embodiment, a nozzle 6 is provided at the air outlet.

[0038] like Figure 1 As shown, the nozzle 6 is arranged at the gas outlet and fixed on the heat insulation layer 5. The combustion gas generated by the combustion of the charge 2 can pass through the first channel and the gas guide cavity 51 in sequence and finally be discharged from the nozzle 6.

[0039] Example 2 The present application provides a solid rocket ramjet engine, including a gas generator capable of adapting to high overload as described in Example 1.

[0040] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A gas generator capable of adapting to high overload, characterized in that: include: An outer shell (1), wherein the outer shell (1) is filled with a medicine column (2) and has an air outlet at one end; A buffer component, the buffer component comprising an elastic member (3) and a limiting member (4) fixed to each other, the limiting member (4) being arranged in the housing (1), one end of which abuts against an inner wall of the housing (1) at one end close to the gas outlet, the elastic member (3) being arranged on a side of the limiting member (4) away from the gas outlet, the end of which abuts against the drug column (2); the elastic member (3) and the limiting member (4) are jointly provided with a first channel for connecting a space on one side of the drug column (2) with the gas outlet.

2. A gas generator capable of adapting to high overload according to claim 1, characterized in that: The buffer component has a first working state and a second working state. When in the first working state, the first channel connects the space on one side of the medicine column (2) with the air outlet; when in the second working state, the elastic member (3) is deformed under pressure and the first channel is blocked.

3. A gas generator capable of adapting to high overload according to claim 1, characterized in that: A first through hole (301) is provided at the centre of the elastic member (3), and a second through hole (401) corresponding to and communicating with the first through hole (301) is provided on the limiting member (4).

4. A gas generator capable of adapting to high overload according to claim 3, characterized in that: The limiting member (4) comprises a first part and a second part which are integrally connected, the first part is provided with the second through hole (401), and the second part is provided with a third through hole (404) which is correspondingly connected to the second through hole (401).

5. A gas generator capable of adapting to high overload according to claim 4, characterized in that: The elastic member (3) is provided with a plurality of first fan-shaped holes (302) surrounding the first through hole (301); the first portion is provided with a plurality of second fan-shaped holes (402) correspondingly connected to the first fan-shaped holes (302); the second portion is provided with a plurality of third fan-shaped holes (405) correspondingly connected to the second fan-shaped holes (402); and the plurality of third fan-shaped holes (405) are collectively connected to the third through hole (404).

6. A gas generator capable of adapting to high overload according to claim 5, characterized in that: The elastic member (3) is provided with a plurality of first arc-shaped holes (303) surrounding the plurality of first fan-shaped holes (302), the first arc-shaped holes (303) corresponding to the first fan-shaped holes (302) one by one, the first portion is provided with a plurality of second arc-shaped holes (403) corresponding to and connected to the first arc-shaped holes (303), the first arc-shaped holes (303) being connected to the third fan-shaped holes (405) via the second arc-shaped holes (403).

7. A gas generator capable of adapting to high overload according to claim 1, characterized in that: The elastic member (3) is made of rubber material, and the limiting member (4) is made of metal material.

8. A gas generator capable of adapting to high overload according to claim 1, characterized in that: A heat insulating layer (5) is further provided between the stopper (3) and the inner wall of the housing (1) close to one end of the air outlet, an air guiding cavity (51) is formed inside the heat insulating layer (5), and the air guiding cavity (51) is respectively connected to the first channel and the air outlet.

9. A gas generator capable of adapting to high overload according to claim 1, characterized in that: A nozzle (6) is provided at the air outlet.

10. A solid rocket ramjet engine, characterized in that: It comprises a gas generator capable of adapting to high overload as described in any one of claims 1 to 9.

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