Rocket engine nozzle reinforcing ring structure and nozzle structure

Abstract

The utility model provides a rocket engine jet pipe reinforcing ring structure and a jet pipe structure, and the reinforcing ring structure comprises a plurality of ring sections; the multiple ring sections are sequentially spliced to form a complete ring shape and used for being arranged on the outer side face of the spray pipe in a sleeving mode. The reinforcing ring structure can reduce the production process difficulty of the reinforcing ring.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of rocket engine nozzle, specifically relates to a rocket engine nozzle reinforcing ring structure and nozzle structure. BACKGROUND

[0002] The nozzle of a rocket engine is usually designed as a large-size thin-walled part, in order to improve the structural strength and rigidity of the nozzle, a plurality of reinforcing rings with specified radial thickness can be arranged at specified axial positions of the nozzle, and the reinforcing rings are rigidly connected with the thin-walled nozzle.

[0003] In order to reduce the machining difficulty of the reinforcing ring, it is particularly important to design a rocket engine nozzle reinforcing ring structure. SUMMARY

[0004] The utility model discloses a rocket engine nozzle reinforcing ring structure and nozzle structure which overcome the deficiencies of the prior art.

[0005] The utility model provides a kind of rocket engine nozzle reinforcing ring structure, comprising: multiple ring segments;Multiple ring segments are sequentially spliced to form complete annular, for set in the outer side of nozzle.

[0006] According to one embodiment of the utility model, it includes 6 ring segments.

[0007] According to one embodiment of the utility model, the cross section of the ring segment in its axial direction is a triangular profile.

[0008] According to one embodiment of the utility model, the two side faces of the axial direction of the ring segment are respectively provided with outwardly extending ring segment flanging, and the ring segment flanging is used for fixedly connecting with the outer side wall of the nozzle.

[0009] According to one embodiment of the utility model, it further includes a plurality of patches, and the opposite two side edges of each patch are respectively used for connecting two adjacent ring segments.

[0010] According to one embodiment of the utility model, the patch is provided with patch flanging, and the patch flanging is used for fixedly connecting with the outer side wall of the nozzle.

[0011] According to one embodiment of the utility model, the patch and the ring segment are provided with corresponding assembly positioning holes, and the ring segment is fixedly connected with the patch through the assembly positioning hole and the fastener.

[0012] According to one embodiment of the present invention, two mounting positioning holes are respectively provided on both sides of the overlapping piece near the corresponding ring segment, and each pair of mounting positioning holes is used to fix and connect with the corresponding ring segment.

[0013] According to one embodiment of the present invention, the annular flange and the nozzle sidewall are connected by circular overlapping welding.

[0014] On the other hand, the present invention provides a nozzle structure, including: a nozzle and at least one of the aforementioned reinforcing ring structures.

[0015] According to the reinforcing ring structure of this utility model, the production process difficulty of the reinforcing ring can be reduced by splicing multiple ring segments together to form the entire reinforcing ring.

[0016] It should be understood that the above general description and the following specific embodiments are merely exemplary and illustrative, and do not limit the scope of the present invention. Attached Figure Description

[0017] The accompanying drawings are part of the specification of this utility model and illustrate exemplary embodiments of the utility model. The drawings, together with the description in the specification, are used to illustrate the principles of the utility model.

[0018] Figure 1 This is a schematic diagram of the nozzle and reinforcing ring structure according to an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the reinforcing ring structure according to an embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the reinforcing ring structure according to another embodiment of the present invention;

[0021] Figure 4 Cross-sectional view of the reinforcing ring structure in another embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the weld seam of the reinforcing ring structure according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the weld seam of the reinforcing ring structure according to another embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the weld seam of the reinforcing ring structure in another embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Ring segment; 2-Overlapping piece; 3-Nozzle; 4-Triangular surface; 5-Ring segment flange; 6-Assembly positioning hole; 7-Circular weld; 8-Wave weld; 9-Parallel weld; 10-Rectangular surface; 11-Semi-circular surface. Detailed Implementation

[0027] The features and exemplary embodiments of various aspects of this utility model will be described in detail below. To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this utility model and to exemplarily illustrate the principles of this utility model, and are not configured to limit this utility model. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or regions in the drawings may be enlarged for other structural components or regions to aid in the understanding of the embodiments of this utility model.

[0028] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this utility model. In the description of this utility model, it should be noted that, unless otherwise stated, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure or component that includes a list of elements includes not only those elements but also other structural elements that are not expressly listed or inherent to the structure or component. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes the element.

[0030] Spatial relation terms such as "below," "under," "under," "low," "above," "on," and "high" are used for descriptive convenience to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device, in addition to those different from those shown in the figure. Furthermore, phrases such as "one element on / below another element" can indicate that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first" and "second" are also used to describe individual elements, areas, parts, etc., without specifically indicating order or sequence, and should not be considered restrictive. Similar terms are used throughout the description to represent similar elements.

[0031] In the following description of this utility model, the terms "rocket," "launch vehicle," "spacecraft," "space launch vehicle," or "missile" may be used in certain scenarios for ease of description only, and their connotations are not limited to the specific terms used. Generally, the rockets in this utility model include space launch vehicles or launch vehicles used to carry satellites, spacecraft, or other probes, as well as various missiles, rockets, and other weapons used to carry military payloads, and similar products capable of delivering payloads into the air. Those skilled in the art, when interpreting the above specific terms, should not limit the rocket to only one of launch vehicles or missiles based on the specific terms used in the description, thereby narrowing the scope of protection of this utility model.

[0032] For those skilled in the art, this invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples.

[0033] Figure 1 This is a schematic diagram of the nozzle and reinforcing ring structure according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the reinforcing ring structure according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the reinforcing ring structure according to another embodiment of the present invention; Figure 4 Cross-sectional view of the reinforcing ring structure in another embodiment of the present invention; Figure 5 This is a schematic diagram of the weld seam of the reinforcing ring structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the weld seam of the reinforcing ring structure according to another embodiment of the present invention; Figure 7 This is a schematic diagram of the weld seam of the reinforcing ring structure in another embodiment of the present invention.

[0034] like Figure 1 As shown, this utility model provides a rocket engine nozzle reinforcing ring structure, including: multiple ring segments 1. The multiple ring segments 1 are sequentially spliced ​​to form a complete ring, which is used to fit onto the outer side of the nozzle 3.

[0035] Specifically, the forming and installation methods for large-scale nozzle reinforcing rings typically present the following problems: 1) Using ring forgings for machining reinforcing rings results in high costs, long lead times, low material utilization, and the inability to fabricate large-scale ring segments using certain special metal materials; 2) Using standard tubing for bending reinforcing rings limits the cross-sectional shape of the reinforcing ring to the shape of the tubing, leading to poor compatibility with the nozzle installation connection, and the inability to fabricate standard tubing using certain special metal materials; 3) The reinforcing ring and nozzle can be rigidly connected by welding, with manual or automatic argon arc welding being commonly used. However, these two welding methods involve large heat inputs, making thin-walled nozzles prone to thermal deformation, and argon arc welding cannot be used for some metal materials that are highly susceptible to oxidation; 4) The reinforcing ring and nozzle can be rigidly connected using fasteners, but this requires prefabricating a large number of fasteners and holes on the surfaces of both the nozzle and the reinforcing ring, resulting in complex processes and increased structural weight.

[0036] The reinforcing ring structure provided in this embodiment can be formed into a complete ring by segmented molding and splicing multiple ring segments 1. This significantly reduces the molding difficulty of the reinforcing ring structure surface, increases the freedom of its cross-sectional shape design, and thus provides great convenience for its surface design, improving material utilization. Furthermore, for reinforcing ring structures that require special metal materials, for example, if the material supply is limited or the size is small, this reinforcing ring structure can eliminate unfavorable constraints such as size limitations caused by raw materials.

[0037] According to one embodiment of the present invention, the reinforcing ring structure includes 6 ring segments 1.

[0038] In this embodiment, the number of ring segments 1 can be determined based on the product perimeter, raw material sheet width, sheet metal forming process, etc. For example, six ring segments 1 can be connected end to end to form a complete ring-shaped reinforcing ring structure.

[0039] like Figure 2 As shown, according to one embodiment of the present invention, the cross section of the ring segment 1 in its axial direction is a triangular surface 4.

[0040] The reinforcing ring structure provided in this embodiment adopts a triangular surface, which maximizes structural efficiency and minimizes weight under the same performance requirements. Those skilled in the art will understand that the triangular surface is the optimal embodiment, but it is not intended to limit the scope of protection of this utility model. Figure 3 and 4 As shown, for example, ring segment 1 can also adopt a rectangular surface 10, a semi-circular surface 11, etc.

[0041] According to one embodiment of the present invention, the two sides of the annular segment 1 in the axial direction are respectively provided with outwardly extending annular segment flanges 5, which are used to fix and connect with the outer side wall of the nozzle 3.

[0042] In this embodiment, for example, the annular flange 5 and the nozzle 3 can be rigidly connected by laser welding. Laser welding of the annular flange 5 reduces the difficulty of connecting it to the nozzle, improves the reliability of the connection, and eliminates the structural deformation problem caused by excessive heat input when using argon arc welding between the nozzle and the reinforcing ring. It also makes it easier to achieve reliable atmosphere protection and oxidation prevention. This reinforcing ring structure is particularly advantageous for special metal materials that are highly susceptible to oxidation, allowing designers to use such special materials more conveniently and with greater control in the field of rocket engines. Furthermore, laser welding of the reinforcing ring structure to the nozzle 3 via the annular flange 5 avoids the need for additional fasteners to connect the reinforcing ring and the nozzle, simplifying the process and reducing structural weight.

[0043] like Figure 2 As shown, according to one embodiment of the present invention, in addition to multiple ring segments 1, the reinforcing ring structure also includes multiple overlapping pieces 2, and the opposite two sides of each overlapping piece 2 are used to connect two adjacent ring segments 1.

[0044] In this embodiment, multiple ring segments 1 are interconnected by connecting pieces 2 to form a complete ring. For example, the same number of connecting pieces 2 as the number of ring segments 1 can be configured, and adjacent ring segments 1 are connected by a connecting piece 2.

[0045] According to one embodiment of the present invention, the mounting plate 2 is provided with a mounting plate flange, which is used to fix and connect with the outer side wall of the nozzle 3.

[0046] In this embodiment, multiple ring segments 1 and overlapping pieces 2 are sequentially welded to form a fully circular reinforcing ring structure. The reinforcing ring structure is then fitted onto the outer side of the nozzle at a designated height. Finally, the ring segment flanges 5 and overlapping piece flanges are fixedly connected to the nozzle (e.g., by laser welding).

[0047] For example, the flange of the overlapping plate can be fused with the flange of the ring segment 5 by laser welding, and then welded to the outer wall of the nozzle 3 as a whole. For example, the shape of the overlapping plate 2 can be similar to that of the ring segment 1 to improve its compatibility with the ring segment 1. For example, the overlapping plate 2 also adopts a triangular shape structure with flanges.

[0048] like Figure 5 As shown, according to one embodiment of the present invention, the mounting plate 2 and the ring segment 1 are provided with corresponding assembly positioning holes 6, and the ring segment 1 is fixedly connected to the mounting plate 2 through the assembly positioning holes 6 and fasteners.

[0049] In this embodiment, for example, a positioning pin can be used to pass through the corresponding assembly positioning holes of the lapping piece 2 and the ring segment 1, and a bolt fastener can be used to cooperate with the positioning pin to fasten the lapping piece flange and the ring segment flange 5.

[0050] According to one embodiment of the present invention, two mounting positioning holes 6 are respectively provided on both sides of the overlapping piece 2 near the corresponding ring segment, and each pair of mounting positioning holes 6 is used to fix and connect with the corresponding ring segment 1.

[0051] According to one embodiment of the present invention, the annular flange 5 and the side wall of the nozzle 3 are connected by circular overlapping welding.

[0052] In this embodiment, for example, a circular welding process with specified power, amplitude, frequency, and duration can be performed using the lens group of the laser welding gun head, including penetration ring flange (and overlap flange) and nozzle, forming a circular weld. Furthermore, according to the design requirements for connection strength, the weld can be applied to the upper and lower sections (…). Figure 1 The two annular flange areas on both sides (as shown in the figure) are evenly arranged with a specified number of circular welds 7 along their circumferential direction.

[0053] Those skilled in the art will understand that the circular laser-welded connection used in this embodiment is only for illustrating the connection method between the reinforcing ring structure and the nozzle in this embodiment, and is not intended to limit the scope of protection of this utility model. For example, as Figure 6 and 7 As shown, the area between the annular flange 5 and the side wall of the nozzle 3 can also be a wavy weld 8 or a parallel weld 9, etc.

[0054] On the other hand, this utility model provides a nozzle structure, including: a nozzle 3 and at least one reinforcing ring structure.

[0055] In this embodiment, for example, multiple reinforcing ring structures may be included. These multiple reinforcing ring structures are respectively fitted onto different designated height positions of the nozzle 3 to increase the structural strength of the nozzle 3.

[0056] Those skilled in the art will understand that the descriptions related to laser welding in this invention are merely auxiliary means to illustrate the structure of this invention and are not intended to limit the scope of protection of this invention. For example, the reinforcing ring structure provided by this invention can be fixedly connected to the nozzle by means of electron beam welding or other methods.

[0057] The above embodiments of this utility model can be combined with each other and have corresponding technical effects.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A rocket engine nozzle reinforcing ring structure, characterized by, The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle.

2. The reinforced ring structure of claim 1, wherein, The application relates to a reinforcing ring structure for a nozzle.

3. The reinforced ring structure of claim 1, wherein, The application relates to a reinforcing ring structure for a nozzle.

4. The reinforced ring structure of claim 1, wherein, The application relates to a reinforcing ring structure for a nozzle.

5. The reinforced ring structure of claim 1, wherein, The application relates to a reinforcing ring structure for a nozzle.

6. The reinforced ring structure of claim 5, wherein, The application relates to a reinforcing ring structure for a nozzle.

7. The reinforced ring structure of claim 5, wherein, The application relates to a reinforcing ring structure for a nozzle.

8. The reinforced ring structure of claim 7, wherein, The application relates to a reinforcing ring structure for a nozzle.

9. The reinforced ring structure of claim 4, wherein, The application relates to a reinforcing ring structure for a nozzle.

10. A nozzle structure, characterized by, The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing ring structure for a nozzle. The application relates to a reinforcing

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