Carrier rocket delivery pipe with supporting table

Abstract

The utility model provides a carrier rocket delivery pipe with a supporting table. The carrier rocket delivery pipe at least comprises a delivery pipe body and the supporting table. The first end of the conveying pipe is used for being installed at the bottom of a rocket box, and the second end of the conveying pipe is used for being connected with an engine swing hose. One end of the supporting table is arranged on the outer surface of the side, facing the bottom of the rocket box, of the conveying pipe, and the other end is connected with the bottom of the rocket box; when the delivery pipe of the carrier rocket is loaded, part of the load is shared through the supporting table so as to prevent the engine from swinging and the hose from transversely displacing.

Description

TECHNICAL FIELD

[0001] The utility model relates to space launch vehicle technology field especially a kind of launch vehicle conveying pipe with support platform. BACKGROUND

[0002] In the conventional design of launch vehicle pipeline system, the typical elbow structure (one end fixed, one end connected with flexible hose) faces significant technical challenges. When the hose end is subjected to the combined action of internal pressure blind plate force and hose dynamic load, stress concentration effect will occur in the elbow area, and the peak stress often exceeds the material yield limit, causing local plastic deformation. This structural failure not only causes large deflection deformation of the elbow, but more importantly, it will be transmitted to the hose connection end, causing the hose transverse displacement to exceed the allowable tolerance range, ultimately leading to reduced system reliability.

[0003] The reason is that the rigidity of the elbow is insufficient, and the conventional solution is to thicken the pipe wall, which usually needs to be thickened to 8-10mm to meet the requirements, but at the same time, it brings the problems of increased structure weight, increased manufacturing difficulty and rising cost. SUMMARY

[0004] To solve the above technical problems, the utility model provides a launch vehicle conveying pipe with support platform, which sets a support platform between the conveying pipe and the rocket box bottom to share the load transmitted from the engine end, solving the problem of swinging hose transverse displacement caused by insufficient rigidity of the conveying pipe.

[0005] The utility model provides a launch vehicle conveying pipe with support platform, at least including conveying pipe and support platform, the conveying pipe is special-shaped pipe, its first end is used for installing in rocket box bottom, second end is used for connecting engine swinging hose, the support platform one end is arranged on the outer surface of the conveying pipe side towards rocket box bottom, the other end is used for being connected with rocket box bottom, when launch vehicle conveying pipe is subjected to load, part load is shared by the support platform to prevent engine swinging hose from transverse displacement.

[0006] In one embodiment, the conveying pipe is an S-shaped conveying pipe.

[0007] In one embodiment, the end of the support platform for connecting with the rocket box bottom is provided with a connecting tool; the support platform is fixedly installed on the rocket box bottom through the connecting tool.

[0008] In one embodiment, the support platform and the connecting tool are designed by topology optimization algorithm.

[0009] In one embodiment, the support platform is a hollow shell structure; the intersection line between the inner surface of the support platform and the outer surface of the S-shaped conveying pipe is provided with a rounded corner.

[0010] In one embodiment, the rounded corner ranges from R3 to R10.

[0011] In one embodiment, the thickness of the support platform ranges from 3mm to 15mm.

[0012] In one embodiment, the support platform is a hollow structure.

[0013] In one embodiment, the connecting tool is a hollow structure.

[0014] In one embodiment, the thickness of the side of the support platform for contacting the connecting tool is greater than the thickness of other sides.

[0015] The carrying rocket conveying pipe with a support platform of the utility model, through setting up the support platform between the conveying pipe and the rocket box bottom, utilizes the support platform to share the load transmitted from the engine end, solves the swing hose horizontal moving problem caused by insufficient rigidity of the conveying pipe.

[0016] Upon reading the DETAILED DESCRIPTION and reviewing the drawings, one skilled in the art will realize additional features and advantages. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 It is the front view of the carrying rocket conveying pipe with a support platform of the utility model embodiment.

[0019] Figure 2 It is the right view of the carrying rocket conveying pipe with a support platform of the utility model embodiment.

[0020] Figure 3 It is the top view of the carrying rocket conveying pipe with a support platform of the utility model embodiment.

[0021] Figure 4 It is the B-B sectional view of the carrying rocket conveying pipe with a support platform of the utility model embodiment. DETAILED DESCRIPTION

[0022] The features and exemplary embodiments of each aspect of the present application will be described in detail below, in order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application, for example, to illustrate the principles of the present application, and are not configured to limit the present application. In addition, the components in the drawings are not necessarily drawn to scale. For example, the size of some components in the drawings can be enlarged for other components or areas to help understand the embodiments of the present application.

[0023] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the embodiments of the present application. In the description of the present application, it should be noted that, unless otherwise stated, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In addition, the terms "include", "contain", "have" or any other variant thereof are intended to cover non-exclusive inclusion, so that the inclusion of a series of element structures or components not only includes those elements, but also includes other elements not explicitly listed or inherent in the structure, component. Without more limitation, the elements defined by the sentence "include" do not exclude the presence of other identical elements in the article or device including the elements.

[0025] Spatial relationship terms such as "below", "under", "lower", "above", "on", "upper", etc. are used to facilitate description and explanation of the position of one element relative to the second element, indicating that these terms are intended to cover different orientations of the device, except for the orientations shown in the drawings. In addition, for example, "one element is on / under another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc. and should not be considered as limiting. Similar terms are used throughout the description to indicate similar elements.

[0026] For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0027] In the combined application of the hard elbow and the flexible pipe, in order to increase the pressure bearing capacity of the launch vehicle conveying pipe and avoid the deformation of the conveying pipe caused by the yielding of the conveying pipe under a large load, the utility model provides a launch vehicle conveying pipe with a supporting table.

[0028] Meanwhile refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 :

[0029] The launch vehicle conveying pipe with the supporting table at least comprises a conveying pipe 1 and a supporting table 2. The conveying pipe 1 is a special-shaped pipe, the first end of which is used for being installed on the bottom of a rocket box, and the second end of which is used for being connected with a motor swing flexible pipe. The supporting table 2 is arranged on the outer surface of the conveying pipe 1 on the side towards the bottom of the rocket box, and the other end of the supporting table 2 is used for being connected with the bottom of the rocket box. That is to say, the bottom of the rocket box simultaneously bears the conveying pipe 1 and the supporting table 2, and when the conveying pipe is subjected to the load applied by the engine end (the swing flexible pipe end), on one hand, the conveying pipe can bear the load by its own rigidity, and on the other hand, the conveying pipe can share part of the load through the supporting table 2, so as to prevent the transverse displacement of the swing flexible pipe caused by the large deformation of the conveying pipe after exceeding the yielding, and a series of problems caused by the insufficient rigidity of the conveying pipe are completely solved. Meanwhile, the utility model can also limit the transverse movement of the conveying pipe after the supporting table is connected with the bottom of the rocket box, and further avoid the transverse movement of the motor swing flexible pipe.

[0030] As to the swing flexible pipe transverse displacement in the combined application of the hard elbow and the flexible pipe, the phenomenon is caused by the double insufficiency of the rigidity of the elbow structure and the load bearing capacity. The traditional solution usually adopts the way of increasing the pipe wall thickness to thicken the pipe wall to 8-10mm to improve the structural rigidity. However, this simple strengthening design strategy will bring a series of derivative problems, including: significantly increasing the structural mass of the pipe system (causing negative influence on the effective load capacity of the launch vehicle), improving the manufacturing process complexity (especially the difficulty of the precise bending technology of the thin-walled pipe), and causing the double rise of the material cost and the processing cost, etc., forming the technical bottleneck restricting the system optimization.

[0031] The embodiment of the utility model increases the supporting table between the conveying pipe and the bottom of the rocket box, not only eliminates the hidden danger of the swing flexible pipe transverse displacement, but also reduces the thickness of the conveying pipe by 2mm, so that the whole system realizes the weight reduction. As can be seen, the application of the launch vehicle conveying pipe with the supporting table in the embodiment of the utility model also increases the load capacity of the secondary system.

[0032] In one embodiment, the shape of the conveying pipe 1 is S-shaped. The two ends of the S-shaped conveying pipe 1 are respectively provided with flanges (such as Figure 3The support table 2 is tangent to the outer surface of the S-shaped conveying pipe 1 towards the bottom side of the rocket box, is open on one side close to the first end of the S-shaped conveying pipe 1, and is hollow inside to reduce weight. The thickness of the hollow shell can be flexibly adjusted according to the force and safety factor, and can be selected between 3mm and 15mm.

[0033] It should be noted that the support table 2 and the conveying pipe 1 are two independent parts, and can be in a connected relationship or a non-connected relationship (only abutting each other).

[0034] In the above embodiment, the support table 2 can be provided as a shell structure with a thickness ranging from 3mm to 15mm, and the position of the support table 2 along the conveying pipe 1 is intersected (as shown in the B-B cross-sectional view shown in the figure). Figure 4 The cross section of the support table 2 is trapezoidal. The inner surface of the large end of the support table 2 is tangent to the outer surface of the conveying pipe 1, and the inner surface of the small end is tangent to the bottom of the rocket box. The tangent line between the inner surface of the large end of the support table 2 and the outer surface of the conveying pipe 1 is provided with a rounded corner, wherein the range of the rounded corner is R3 to R10.

[0035] Further, in order to adapt to the mounting hole of the bottom of the rocket box, the end (small end) of the support table 2 for connecting with the bottom of the rocket box is provided with a connecting tool 3, and the support table 2 is fixedly installed on the bottom of the rocket box through the connecting tool 3. The connecting tool 3 is provided on the small end of the support table 2 by welding or screwing, and the side of the connecting tool 3 away from the support table 2 is connected with the bottom of the rocket box by welding or screwing.

[0036] In order to reduce the weight, the support table and the connecting tool can be designed by using a topology optimization algorithm, or can be further optimized into a grid type or other hollow structure.

[0037] For example, without affecting the stability and support capacity of the support table structure, each surface of the shell structure of the support table is provided with a hollow hole.

[0038] Further, the connecting tool can also be designed as a hollow structure.

[0039] In order to facilitate the production and assembly of the support table and the connecting tool, in any one of the above embodiments, the thickness of the side of the support table 2 for contacting with the connecting tool 3 is greater than the thickness of the other sides.

[0040] The above embodiments can be combined with each other, and have corresponding technical effects.

[0041] The above description is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A launch vehicle delivery tube with a support platform, characterized by, At least comprising: a delivery pipe and a support table; the delivery pipe is a special-shaped pipe, the first end of which is used for mounting on the bottom of a rocket box, and the second end of which is used for connecting a motor swing hose; one end of the support table is arranged on the outer surface of the side of the delivery pipe facing the bottom of the rocket box, and the other end is used for connecting with the bottom of the rocket box; When the delivery pipe of the launch vehicle is subjected to a load, part of the load is shared through the support table to prevent the motor swing hose from being displaced laterally.

2. The launch vehicle transfer tube with support platform of claim 1, wherein, The delivery pipe is an S-shaped delivery pipe.

3. The launch vehicle transfer tube with support platform of claim 2, wherein, The end of the support table used for connecting with the bottom of the rocket box is provided with a connecting tool; the support table is fixedly installed on the bottom of the rocket box through the connecting tool.

4. The launch vehicle transfer tube with support platform of claim 3, wherein, The support table and the connecting tool are both designed by a topology optimization algorithm.

5. The launch vehicle transfer tube with support platform of any of claims 2 to 4, wherein, The support table is a hollow shell structure; the intersection line between the inner surface of the support table and the outer surface of the S-shaped delivery pipe is arranged as a round corner.

6. The launch vehicle transfer tube with support platform of claim 5, wherein, The range of the round corner is R3 to R10.

7. The launch vehicle transfer tube with support platform of claim 5, wherein, The thickness of the support table ranges from 3mm to 15mm.

8. The launch vehicle transfer tube with support platform of claim 7, wherein, The support table is a hollow structure.

9. The launch vehicle transfer tube with support platform of claim 3, wherein, The connecting tool is a hollow structure.

10. The launch vehicle transfer tube with support platform of claim 3, wherein, The thickness of the side of the support table used for contacting with the connecting tool is greater than the thickness of the other sides.

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