Rocket high-pressure gas cylinder mounting device and rocket device

Abstract

The invention provides a rocket high-pressure gas cylinder mounting device and a rocket device, belongs to the technical field of rocket devices, and aims to solve the problem that an existing gas cylinder mounting device cannot effectively adapt to axial extension after gas cylinders are inflated. Comprising an upper gas cylinder connecting assembly and a lower gas cylinder connecting assembly, an upper support in the gas cylinder upper connecting assembly is connected with a stringer and a skin, a first square through hole is formed between the upper support and an upper gas outlet fixing piece, a square groove section of an upper gas outlet of a high-pressure gas cylinder penetrates through the first square through hole, and the length of the square groove section of the upper gas outlet is larger than that of the first square through hole. A lower support in the gas cylinder lower connecting assembly is connected with a stringer, a skin and a lower ring frame, a second square through hole is formed between the lower support and a lower gas outlet fixing piece, a square groove section of a lower gas outlet of the high-pressure gas cylinder penetrates through the second square through hole, and the length of the square groove section of the lower gas outlet is equal to that of the second square through hole. The device can adapt to inflation deformation of the gas cylinder, and the rigidity self-adaption effect is achieved.

Description

Technical Field

[0001] This invention belongs to the field of rocket device technology, and relates to a rocket high-pressure gas cylinder installation device and a rocket device. Background Technology

[0002] With the rapid development of the commercial space industry, the demand for rocket carrying capacity continues to grow, placing higher requirements on pressurization and delivery systems. To meet these requirements, composite material cylinders used in rocket systems are developing towards ultra-large sizes.

[0003] When the height of the gas cylinder reaches the meter level, its length deformation after high-pressure filling cannot be ignored. For a 1-meter-high gas cylinder, the elongation after filling can reach several millimeters. At the same time, the gas cylinder fixing structure must withstand overload and vibration loads under ground and flight conditions, and must be lightweight and highly reliable.

[0004] Traditional gas cylinder installation devices employ a symmetrical support structure. When the gas cylinder size is small or the gas pressure is low, the structure has no major problems. However, when the gas cylinder size reaches the meter level or the filling pressure reaches 32MPa, the traditional symmetrical structure cannot effectively accommodate the axial elongation of the gas cylinder after filling. This results in excessive stress concentration at the connection points, requiring methods such as increasing the thickness of the structure, increasing the connection dimensions, and replacing with high-strength materials to improve strength and stiffness. This significantly increases the structural mass and reduces economic efficiency. At the same time, the increased weight affects the overall load-bearing capacity and modal results of the compartment. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a rocket high-pressure gas cylinder installation device and a rocket device that can adapt to the gas cylinder inflation deformation and achieve the effect of stiffness self-adaptation.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: On one hand, the present invention provides a rocket high-pressure gas cylinder installation device, comprising: The upper gas cylinder connection assembly and the lower gas cylinder connection assembly are arranged sequentially from top to bottom along the axial direction of the main rocket section. The gas cylinder connection assembly includes: Upper air outlet fixing component and upper bracket; The first end of the upper support is connected to the stringers and skin of the rocket compartment; The second end of the upper bracket is connected to the upper air outlet fixing component; A first square through hole is formed between the second end of the upper bracket and the upper air outlet fixing member. The square groove section of the upper air outlet of the high-pressure gas cylinder passes through the first square through hole, and the length of the square groove section of the upper air outlet is greater than the length of the first square through hole. The lower connection assembly for the gas cylinder includes: Lower air outlet fixing component and lower bracket; The first end of the lower support is connected to the stringers, skin, and lower ring frame of the rocket compartment. The second end of the lower bracket is connected to the lower air outlet fixing component; A second square through hole is formed between the second end of the lower bracket and the lower air outlet fixing member. The square groove section of the lower air outlet of the high-pressure gas cylinder passes through the second square through hole, and the length of the square groove section of the lower air outlet is equal to the length of the second square through hole.

[0007] Optionally, the first through hole for the through screw on the upper air outlet fixing member is an oblong hole.

[0008] Optionally, flexible pads are provided on the outer sides of the two ends of the first square through hole.

[0009] Optionally, the upper support is a trapezoidal structure.

[0010] Optionally, the second through hole for the through screw on the lower air outlet fixing member is a round hole.

[0011] Optionally, the axial length of the first end of the lower bracket is greater than the axial length of the first end of the upper bracket.

[0012] Optionally, the lower support includes: The first panel near the lower ring frame; The second panel is located away from the lower ring frame and is positioned opposite and parallel to the first panel. A third panel that connects the first side end of the first panel and the first side end of the second panel; A fourth panel that connects the second side end of the first panel and the second side end of the second panel; The fifth panel is located above the first panel and is connected to the lower air outlet fixing component; The first panel, second panel, third panel, fourth panel, and fifth panel form a box-shaped structure.

[0013] Optionally, the first panel, second panel, third panel, and fourth panel are all provided with flanges at the ends that are connected to the rocket, and the flange of the first panel is integrated with the flange of the lower ring frame.

[0014] Optionally, the first panel, the second panel, the third panel, and the fourth panel are provided with diagonal ribs between their respective flanges.

[0015] Secondly, the present invention provides a rocket device, including a rocket body, a high-pressure gas cylinder, and the aforementioned rocket high-pressure gas cylinder mounting device, wherein the high-pressure gas cylinder is mounted on the rocket body by means of the rocket high-pressure gas cylinder mounting device.

[0016] The above-described solution of the present invention has at least the following beneficial effects: In the above-described scheme of the present invention, the upper connecting assembly and the lower connecting assembly of the gas cylinder have different structures. The upper connecting assembly includes an upper outlet fixing member and an upper bracket. The first end of the upper bracket is connected to the stringers and skin of the rocket section. The second end of the upper bracket is connected to the upper outlet fixing member by screws. A first square through hole is formed between the second end of the upper bracket and the upper outlet fixing member. The square groove segment of the upper outlet of the high-pressure gas cylinder passes through the first square through hole, and the length of the square groove segment of the upper outlet is greater than the length of the first square through hole. The lower connecting assembly includes a lower outlet fixing member and a lower bracket. The first end of the lower bracket is connected to the stringers, skin, and lower ring frame of the rocket section. The second end of the lower bracket is connected to the lower outlet fixing member by screws. A second square through hole is formed between the second end of the lower bracket and the lower outlet fixing member. The square groove segment of the lower outlet of the high-pressure gas cylinder passes through the second square through hole, and the length of the square groove segment of the lower outlet is equal to the length of the second square through hole. The upper end of the gas cylinder can move axially to adapt to the deformation of the gas cylinder during inflation, achieving a self-adaptive stiffness effect. The lower end of the gas cylinder is fixed to the lower connecting component of the gas cylinder, while the lower support is connected to the lower ring frame of the compartment, improving the stiffness of the lower support and making the structure more compact and reliable. The overall installation device has the characteristics of "good upper support flexibility and easy deformation, and high lower support stiffness and easy load bearing". Attached Figure Description

[0017] Figure 1 This is a longitudinal view of the rocket high-pressure gas cylinder mounting device of the present invention; Figure 2 This is a horizontal view of the rocket high-pressure gas cylinder mounting device of the present invention; Figure 3 This is a three-dimensional structural diagram of the gas cylinder connection component of the present invention; Figure 4 This is a schematic diagram of the planar structure of the gas cylinder connection component of the present invention; Figure 5 This is a three-dimensional structural diagram of the lower connection component of the gas cylinder of the present invention; Figure 6 This is a schematic diagram of the planar structure of the lower connection component for the gas cylinder of the present invention.

[0018] Figure label: 1-Upper connecting assembly for gas cylinder; 101-Upper outlet fixing piece; 102-Upper bracket; 103-First through hole; 2-Stringer; 3-Upper ring frame; 4-High-pressure gas cylinder; 401-Upper outlet; 402-Lower outlet; 5-Lower ring frame; 6-Lower connecting assembly for gas cylinder; 601-Lower outlet fixing piece; 602-Lower bracket; 6021-First panel; 6022-Second panel; 6023-Third panel; 6024-Fourth panel; 6025-Fifth panel; 603-Second through hole; 604-Flanged edge; 605-Diagonal rib; 7-Skin. Detailed Implementation

[0019] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0020] Firstly, such as Figures 1 to 6 As shown, an embodiment of the present invention provides a rocket high-pressure gas cylinder installation device, comprising: The upper gas cylinder connection assembly 1 and the lower gas cylinder connection assembly 6 are arranged sequentially from top to bottom along the axial direction of the main rocket section.

[0021] The gas cylinder connection assembly 1 includes: Upper air outlet fixing component 101 and upper bracket 102; The first end of the upper support 102 is connected to the stringers 2 and skin 7 of the rocket compartment section; The second end of the upper bracket 102 is connected to the upper air outlet fixing member 101 by screws; A first square through hole is formed between the second end of the upper bracket 102 and the upper air outlet fixing member 101. The square groove section of the upper air outlet 401 of the high-pressure gas cylinder 4 passes through the first square through hole, and the length of the square groove section of the upper air outlet 401 is greater than the length of the first square through hole. That is, the length of the square groove section of the upper air outlet 401 is greater than the axial width of the upper air outlet fixing member 101 and the upper bracket 102, so that the square groove section of the upper air outlet 401 can move axially in the first square through hole. When the high-pressure gas cylinder 4 is being filled, discharged, or vibrating, the upper end of the high-pressure gas cylinder 4 can move axially to avoid stress concentration at the connection between the high-pressure gas cylinder 4 and the connecting component 1 on the gas cylinder. At the same time, the square groove section of the upper outlet 401 is stuck in the first square through hole, which can restrict the rotation of the high-pressure gas cylinder 4. It should be noted that the difference between the length of the square groove section of the upper air outlet 401 and the length of the first square through hole can be determined based on the degree of expansion and vibration of the high-pressure gas cylinder 4 actually used.

[0022] Specifically, the expansion amount of the high-pressure gas cylinder 4 can be determined based on the length of the expansion after the gas cylinder is pressurized and filled. The difference between the length of the square groove section of the upper outlet 401 and the length of the first square through hole is greater than the increase in length due to expansion after the high-pressure gas cylinder 4 is pressurized and filled.

[0023] The lower connection assembly 6 of the gas cylinder includes: Lower air outlet fixing component 601 and lower bracket 602; The first end of the lower support 602 is connected to the stringer 2, skin 7, and lower ring frame 5 of the rocket compartment. The second end of the lower bracket 602 is connected to the lower air outlet fixing member 601 by screws; A second square through hole is formed between the second end of the lower support 602 and the lower outlet fixing member 601. The square groove section of the lower outlet 402 of the high-pressure gas cylinder 4 passes through the second square through hole, and the length of the square groove section of the lower outlet 402 is equal to the length of the second square through hole. That is, the length of the square groove section of the lower outlet 402 is equal to the axial width of the lower outlet fixing member 601 and the lower support 602. The square groove section of the lower outlet 402 cannot move in the second square through hole, so that the lower end of the high-pressure gas cylinder 4 is fixed. At the same time, the square groove section of the lower outlet 402 is stuck in the second square through hole, which can restrict the rotation of the high-pressure gas cylinder 4.

[0024] In order to ensure the effective installation of the high-pressure gas cylinder installation device and ensure a good vibration environment for the high-pressure gas cylinder 4, the present invention connects and fixes the lower support 602 to the lower ring frame 5 with greater rigidity on the rocket shell, and fixes the upper support 102 and the lower support 602 to the stringer 2 of the longitudinal component. This can solve the problem of structural instability caused by the large cantilever structure.

[0025] In this invention, the upper connecting component 1 of the gas cylinder is located above the upper ring frame 3 of the rocket section, and the upper connecting component 1 of the gas cylinder is not connected to the upper ring frame 3, thus ensuring the flexibility of the upper connecting component 1 of the gas cylinder; the lower connecting component 6 of the gas cylinder is located below the lower ring frame 5 of the rocket section, and the lower connecting component 6 of the gas cylinder is connected to the lower ring frame 5, thus ensuring the rigidity of the lower connecting component 6 of the gas cylinder, forming a structure with "good upper support flexibility and easy deformation, and high lower support rigidity and easy load bearing".

[0026] For example, the upper air outlet fixture 101 and the upper bracket 102 are connected by two screws.

[0027] For example, the first through hole 103 for the through screw on the upper air outlet fixing member 101 is an elongated hole. The elongated hole can appropriately compensate for the manufacturing deviation of the gas cylinder.

[0028] For example, the second through hole 603 for the through screw on the lower air outlet fixing member 601 is a round hole. The round hole can ensure the stability of the lower connecting assembly 6 of the gas cylinder.

[0029] For example, flexible pads are respectively provided on the outer sides of the two ends of the first square through hole. The flexible pads can prevent hard contact between metal parts and absorb shock.

[0030] For example, the axial length of the first end of the lower support 602 is greater than the axial length of the first end of the upper support 102. That is, the upper support 102 adopts a relatively thin overall structure, and the connection area between the lower support 602 and the rocket is appropriately widened. While ensuring the "flexibility" of the upper support 102, the rigidity of the lower support 602 increases the ability of the upper support 102 to resist lateral loads.

[0031] For example, the upper support 102 is a trapezoidal structure.

[0032] For example, such as Figure 5 As shown, the lower support 602 includes: The first panel 6021 is located near the lower ring frame 5; The second panel 6022, which is away from the lower ring frame 5, is opposite to and parallel to the first panel 6021. A third panel 6023 connects the first side end of the first panel 6021 and the first side end of the second panel 6022; A fourth panel 6024 connects the second side end of the first panel 6021 and the second side end of the second panel 6022; The fifth panel 6025 is located above the first panel 6021 and is connected to the lower air outlet fixing member 601. The first panel 6021, the second panel 6022, the third panel 6023, the fourth panel 6024, and the fifth panel 6025 form a box-shaped structure. The lower support 602 uses a thicker box-shaped structure to meet the rigidity requirements of the lower support 602.

[0033] Considering that the lower support 602, which is the main load-bearing component, must withstand vibration loads from all directions of the gas cylinder, flanges 604 are provided at the ends of the first panel 6021, the second panel 6022, the third panel 6023, and the fourth panel 6024 that are connected to the rocket. The flange of the first panel 6021 is integrated with the flange of the lower ring frame 5 to improve the rigidity of the lower support 602.

[0034] For example, the first panel 6021, the second panel 6022, the third panel 6023, and the fourth panel 6024 are provided with diagonal ribs 605 between them and their corresponding flanges. The diagonal ribs 605 can further enhance the rigidity of the lower support 602.

[0035] The rocket high-pressure gas cylinder installation device of the present invention has an upper bracket 102 with a trapezoidal structure and a lower bracket 602 with a box-shaped structure. The length of the square groove section of the upper air outlet 401 is greater than the length of the first square through hole, and the length of the square groove section of the lower air outlet 402 is equal to the length of the second square through hole. The upper connecting component 1 and the lower connecting component 6 of the gas cylinder are asymmetrical. The lower end of the gas cylinder is fixedly connected to the lower bracket 602, and the upper end of the gas cylinder can move axially to the upper bracket 102 to achieve deformation compensation when the gas cylinder is filled or vibrates. The upper connecting component 1 of the gas cylinder has good structural flexibility and is not connected to the flange of the upper ring frame 3 of the compartment, which further increases the flexibility. The lower connecting component 6 of the gas cylinder has good structural rigidity and is connected to the flange, stringer 2 and skin 7 of the lower ring frame 5 of the compartment, which further improves the rigidity.

[0036] Secondly, the present invention also provides a rocket device, including a rocket body, a high-pressure gas cylinder 4, and the aforementioned rocket high-pressure gas cylinder mounting device, wherein the high-pressure gas cylinder 4 is mounted on the rocket body by means of the rocket high-pressure gas cylinder mounting device.

[0037] The rocket high-pressure gas cylinder 4 is installed on the rocket body using the rocket high-pressure gas cylinder installation device of the present invention, which has the following advantages: (1) Deformation compensation: The lower end of the high pressure gas cylinder 4 is rigidly fixed by the lower gas cylinder connection component 6, and the upper end of the high pressure gas cylinder 4 is slidably supported by the upper gas cylinder connection component 1, allowing the high pressure gas cylinder 4 to freely extend and retract axially under filling, discharging and vibration conditions; the lower support 602 has high rigidity and the upper support 102 has high flexibility. The elastic design ensures that the device will not be damaged in the elastic deformation range. (2) Lightweight implementation: Based on the different stress characteristics at different locations, the upper support 102 and the lower support 602 of this invention have been designed differently. The upper support 102 has low structural strength and stiffness requirements, so a thinner trapezoidal structure is selected to reduce weight and cost. The lower support 602 uses a thicker box-shaped structure to meet the rigidity requirements of the lower support 602. (3) Reliable structure: The present invention makes full use of the compartment ring frame and stringer 2 as installation points, and strengthens the lower support 602 by using flange 604 and diagonal rib 605 to ensure overall stability and avoid the risk of instability of large cantilever structure. Through local strength analysis of high pressure gas cylinder installation device, overall strength of compartment and modal analysis, the safety factor meets the requirements.

[0038] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rocket high-pressure gas cylinder installation device, characterized in that, include: The upper gas cylinder connection assembly (1) and the lower gas cylinder connection assembly (6) are arranged sequentially from top to bottom along the axial direction of the main rocket section. The gas cylinder connection assembly (1) includes: Upper air outlet fixing component (101) and upper bracket (102); The first end of the upper support (102) is connected to the stringers (2) and skin (7) of the rocket compartment; The second end of the upper bracket (102) is connected to the upper air outlet fixing member (101); A first square through hole is formed between the second end of the upper bracket (102) and the upper air outlet fixing member (101). The square groove section of the upper air outlet (401) of the high pressure gas cylinder (4) passes through the first square through hole, and the length of the square groove section of the upper air outlet (401) is greater than the length of the first square through hole. The lower connection assembly (6) of the gas cylinder includes: Lower air outlet fixing component (601) and lower bracket (602); The first end of the lower support (602) is connected to the stringers (2), skin (7), and lower ring frame (5) of the rocket compartment; The second end of the lower bracket (602) is connected to the lower air outlet fixing member (601); A second square through hole is formed between the second end of the lower bracket (602) and the lower air outlet fixing member (601). The square groove section of the lower air outlet (402) of the high-pressure gas cylinder (4) passes through the second square through hole, and the length of the square groove section of the lower air outlet (402) is equal to the length of the second square through hole.

2. The rocket high-pressure gas cylinder installation device according to claim 1, characterized in that, The first through hole (103) on the upper air outlet fixing member (101) for the through screw is an oblong hole.

3. The rocket high-pressure gas cylinder installation device according to claim 1, characterized in that, Flexible pads are respectively provided on the outer sides of the two ends of the first square through hole.

4. The rocket high-pressure gas cylinder installation device according to claim 1, characterized in that, The upper support (102) has a trapezoidal structure.

5. The rocket high-pressure gas cylinder installation device according to claim 1, characterized in that, The second through hole (603) on the lower air outlet fixing member (601) for the through screw is a round hole.

6. The rocket high-pressure gas cylinder installation device according to claim 1, characterized in that, The axial length of the first end of the lower support (602) is greater than the axial length of the first end of the upper support (102).

7. The rocket high-pressure gas cylinder installation device according to claim 1, characterized in that, The lower support (602) includes: The first panel (6021) near the lower ring frame (5); The second panel (6022) is located away from the lower ring frame (5) and is arranged opposite to and parallel to the first panel (6021); A third panel (6023) is connected to the first side end of the first panel (6021) and the first side end of the second panel (6022). A fourth panel (6024) is connected to the second side end of the first panel (6021) and the second side end of the second panel (6022). The fifth panel (6025) is located at the upper end of the first panel (6021) and is connected to the lower air outlet fixing member (601); The first panel (6021), the second panel (6022), the third panel (6023), the fourth panel (6024), and the fifth panel (6025) form a box-shaped structure.

8. The rocket high-pressure gas cylinder installation device according to claim 7, characterized in that, The first panel (6021), the second panel (6022), the third panel (6023), and the fourth panel (6024) are all provided with a flange (604) at the end connected to the rocket. The flange of the first panel (6021) is integrated with the flange of the lower ring frame (5).

9. The rocket high-pressure gas cylinder installation device according to claim 8, characterized in that, The first panel (6021), the second panel (6022), the third panel (6023), and the fourth panel (6024) are respectively provided with diagonal ribs (605) between their respective flanges.

10. A rocket device, characterized in that, The system includes a rocket body, a high-pressure gas cylinder, and a rocket high-pressure gas cylinder mounting device as described in any one of claims 1 to 9, wherein the high-pressure gas cylinder is mounted on the rocket body via the rocket high-pressure gas cylinder mounting device.

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