Shell type propellant conveying structure of stainless steel rocket storage tank

Abstract

The utility model provides a shell type propellant conveying structure of a stainless steel rocket storage tank. The shell type propellant conveying structure comprises a lower tank body; the lower box body comprises a lower box body inner shell and a lower box body outer shell, and the lower box body inner shell is arranged on the inner side of the lower box body outer shell in a sleeving mode; a stringer conveying pipe is arranged between the lower box body inner shell and the lower box body outer shell in the axial direction, and a collecting pipe is arranged on the outer side of the bottom of the lower box body. One end of the stringer conveying pipe is communicated with the collecting pipe, and the other end of the stringer conveying pipe is communicated with the cavity of the upper box body, so that a propellant in the cavity of the upper box body is guided to the collecting pipe to be used by a rocket engine. According to the shell type propellant conveying structure, the rocket storage tank can be manufactured in a vertical state, and the process difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the field of launch vehicles, and particularly to a shell-type propellant conveying structure for a stainless steel rocket tank. Background Art

[0002] A launch vehicle tank includes an upper tank body and a lower tank body, and a rocket engine is arranged on one side of the lower tank body away from the upper tank body. The propellant stored in the upper tank body needs to be conveyed to the engine through a cylindrical conveying pipe penetrating the cavity of the lower tank body. Since the conveying pipe is very long, it is difficult to install it in a vertical state. Usually, the tank needs to be placed horizontally to install the conveying pipe, and then the tank is restored to the vertical state. In addition, the conveying pipe is too long and is not easy to manufacture. Especially for a stainless steel rocket tank, because its shell wall is too thin and the rigidity is insufficient, it is difficult to install the conveying pipe with the tank placed horizontally and then restore it to the vertical state.

[0003] To reduce the manufacturing difficulty of the propellant conveying structure in the upper tank of the tank, it is particularly important to design a shell-type propellant conveying structure for a stainless steel rocket tank. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a shell-type propellant conveying structure for a stainless steel rocket tank.

[0005] The utility model provides a shell-type propellant conveying structure for a stainless steel rocket tank, including: a lower tank body; the lower tank body includes an inner shell of the lower tank body and an outer shell of the lower tank body, and the inner shell of the lower tank body is sleeved inside the outer shell of the lower tank body; a truss conveying pipe is arranged axially between the inner shell of the lower tank body and the outer shell of the lower tank body, and a manifold is arranged outside the bottom of the lower tank body; one end of the truss conveying pipe is communicated with the manifold, and the other end is communicated with the cavity of the upper tank body to divert the propellant in the cavity of the upper tank body to the manifold for use by the rocket engine.

[0006] According to an embodiment of the utility model, a plurality of the truss conveying pipes are arranged circumferentially between the inner shell of the lower tank body and the outer shell of the lower tank body.

[0007] According to an embodiment of the utility model, it further includes an upper tank body, and an upper conveying pipe for communicating the cavity of the upper tank body and the truss conveying pipe is arranged at the bottom of the upper tank body.

[0008] According to an embodiment of the utility model, a lower conveying pipe for communicating the truss conveying pipe and the manifold is arranged at the bottom of the lower tank body.

[0009] According to an embodiment of the utility model, a plurality of the upper conveying pipes are arranged circumferentially at the bottom of the upper tank body, and the plurality of upper conveying pipes are respectively communicated with the truss conveying pipes.

[0010] According to an embodiment of the present invention, a plurality of the lower end conveying pipes are arranged along the circumferential direction at the bottom of the lower box body, and the plurality of the lower end conveying pipes are respectively communicated with the truss conveying pipes.

[0011] According to an embodiment of the present invention, the manifold includes an annular manifold pipeline arranged along the circumferential direction at the bottom of the lower box body, and the annular manifold pipeline is communicated with a plurality of the lower end conveying pipes.

[0012] According to an embodiment of the present invention, the manifold further includes at least one manifold straight pipe and a manifold central pipe; two ends of the manifold straight pipe are respectively communicated with the annular manifold pipeline and the manifold central pipe, and the manifold central pipe is communicated with a rocket engine, and the propellant in the truss conveying pipe is guided to the rocket engine through the annular manifold pipeline, the manifold straight pipe and the manifold central pipe in sequence.

[0013] According to an embodiment of the present invention, at the connection between the two ends of the truss conveying pipe and the two end heads of the lower box body, annular sealing covers are respectively arranged at the two ends of the lower box body to seal the two ends of the truss conveying pipe.

[0014] According to an embodiment of the present invention, a cooling channel is further arranged along the axial direction between the inner shell of the lower box body and the outer shell of the lower box body.

[0015] According to the shell-type propellant conveying structure of the stainless-steel rocket storage tank of the present invention, by arranging truss conveying pipes between the lower box body shells, the propellant stored in the upper box body is conveyed to the engine, avoiding additionally arranging a penetrating conveying pipe in the cavity of the lower box body, enabling the rocket storage tank to be manufactured in a vertical state and reducing the process difficulty.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and explanatory, and cannot limit the scope claimed by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are part of the specification of the present invention, which illustrate exemplary embodiments of the present invention, and the attached drawings are used together with the description of the specification to explain the principle of the present invention.

[0018] Figure 1 is a front view of the shell-type propellant conveying structure of the stainless-steel rocket storage tank according to an embodiment of the present invention;

[0019] Figure 2 is a cross-sectional view of the lower box body according to an embodiment of the present invention;

[0020] Figure 3It is a partial enlarged view of the cross-section of the lower box body in an embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of the upper conveying pipe in an embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of the lower conveying pipe in an embodiment of the present utility model;

[0023] Figure 6 It is a left view of the shell-type propellant conveying structure of the stainless-steel rocket storage tank in an embodiment of the present utility model.

[0024] Explanation of reference numerals:

[0025] 1 - upper conveying pipe; 2 - truss conveying pipe; 3 - lower conveying pipe; 4 - manifold; 5 - lower box body; 6 - upper box body; 41 - annular manifold pipeline; 42 - manifold straight pipe; 43 - manifold concentrating pipe; 51 - inner shell of the lower box body; 52 - outer shell of the lower box body. Detailed implementation manners

[0026] The features and exemplary embodiments of various aspects of the present utility model will be described in detail below. In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present utility model and are used to exemplarily illustrate the principle of the present utility model, and are not configured to limit the present utility model. In addition, the components in the drawings are not necessarily drawn to scale. For example, the dimensions of some components or regions in the drawings may be enlarged for other components or regions to help understand the embodiments of the present utility model.

[0027] The orientation terms appearing in the following description are all the directions shown in the drawings and do not limit the specific structure of the embodiments of the present utility model. In the description of the present utility model, it should be noted that unless otherwise specified, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] In addition, the terms "comprising", "including", "having" or any other variants thereof are intended to cover non-exclusive inclusion, such that a structure or component including a series of elements not only includes those elements, but also includes other elements not expressly listed or inherent to the structure or component. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the article or device including the element.

[0029] Spatial relationship terms such as "below", "beneath", "under", "lower", "above", "on", "higher", etc. are used to facilitate description and to explain the positioning of one element relative to a second element. These terms are intended to cover different orientations of the device, in addition to orientations different from those shown in the figures. Additionally, for example, "one element is on / under another element" may mean that the two elements are in direct contact, or that there are other elements between the two elements. Furthermore, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and do not particularly refer to order or sequence, and should not be construed as limiting. Similar terms denote similar elements throughout the description.

[0030] In the process of describing the present utility model hereinafter, in certain scenario descriptions, only "rocket", "launch vehicle", "spacecraft", "space launch vehicle" or "missile" may be used. This is merely for convenience of description, and its connotation is not limited to the specific words used. Generally, the launch vehicle of the present utility model includes both launch vehicles or space launch vehicles for carrying satellites, spacecraft or other detectors, and various missiles, rockets and other weapons for carrying military payloads, as well as similar products capable of sending payloads into the air. Those skilled in the art shall not limit the launch vehicle to only one of a rocket or a missile based on the specific words used in the description scenario, so as to narrow the protection scope of the present utility model.

[0031] For those skilled in the art, the present utility model can be implemented without some of these specific details. The following description of the embodiments is merely provided to better understand the present utility model by showing examples of the present utility model.

[0032] Figure 1 is a front view of the shell-type propellant delivery structure of a stainless-steel rocket tank of an embodiment of the present utility model; Figure 2 is a cross-sectional view of a lower box body of an embodiment of the present utility model;

[0033] Figure 3 is a partial enlarged view of the cross-sectional view of the lower box body of an embodiment of the present utility model;

[0034] Figure 4Schematic diagram of the upper delivery pipe of an embodiment of the present utility model; Figure 5 Schematic diagram of the lower delivery pipe of an embodiment of the present utility model; Figure 6 Left view of the shell - type propellant delivery structure of the stainless - steel rocket tank of an embodiment of the present utility model.

[0035] As Figure 1 、 2 As shown in Figures 1, 2 and 3, the present utility model provides a shell - type propellant delivery structure for a stainless - steel rocket tank, which includes a lower box body 5. The lower box body 5 includes an inner shell 51 of the lower box body and an outer shell 52 of the lower box body. The inner shell 51 of the lower box body is sleeved inside the outer shell 52 of the lower box body. A truss delivery pipe 2 is arranged between the inner shell 51 of the lower box body and the outer shell 52 of the lower box body along the axial direction. A manifold pipe 4 is arranged outside the bottom of the lower box body 5. One end of the truss delivery pipe 2 is communicated with the manifold pipe 4, and the other end is communicated with the cavity of the upper box body 6, so as to divert the propellant in the cavity of the upper box body 6 to the manifold pipe 4 for use by the rocket engine.

[0036] In this embodiment, the truss delivery pipe 2 can be composed of trusses welded between the inner shell 51 of the lower box body and the outer shell 52 of the lower box body. The trusses can be trapezoidal trusses. The inner shell of the rocket tank can be made of 301 - 3 / 4H, 301 - H, 301 - EH materials, which are cold - rolled hardened 301 stainless steels with a thickness of 0.4 - 1 mm. The upper box body can be an oxygen tank, and the lower box body can be a fuel tank.

[0037] The shell - type propellant delivery structure of this embodiment, by arranging the truss delivery pipe 2 between the shells of the lower box body 5, conveys the propellant stored in the upper box body to the engine, avoiding the additional arrangement of a penetrating delivery pipe in the cavity of the lower box body, enabling the rocket tank to be manufactured in a vertical state, reducing the process difficulty and the overall weight of the rocket tank.

[0038] According to an embodiment of the present utility model, a plurality of truss delivery pipes 2 are arranged circumferentially between the inner shell 51 of the lower box body and the outer shell 52 of the lower box body.

[0039] In this embodiment, the plurality of truss delivery pipes 2 can be evenly arranged along the circumferential direction of the shell of the lower box body 5.

[0040] As Figure 4 As shown in Figure 4, according to an embodiment of the present utility model, in addition to the lower box body 5, the shell - type propellant delivery structure further includes an upper box body 6. The upper box body 6 is provided with an upper delivery pipe 1 at the bottom, which communicates the cavity of the upper box body 6 and the truss delivery pipe 2.

[0041] As Figure 5 As shown in Figure 5, according to an embodiment of the present utility model, the bottom of the lower box body 5 is provided with a lower delivery pipe 3, which communicates the truss delivery pipe 2 and the manifold pipe 4.

[0042] According to an embodiment of the present utility model, a plurality of upper conveying pipes 1 are arranged along the circumferential direction at the bottom of the upper box body 6, and the plurality of upper conveying pipes 1 are respectively communicated with the truss conveying pipes 2.

[0043] In this embodiment, the plurality of upper conveying pipes 1 can be evenly arranged along the circumferential direction at the bottom of the upper box body 6. The upper conveying pipes 1 and the truss conveying pipes 2 can be communicated in one-to-one correspondence.

[0044] According to an embodiment of the present utility model, a plurality of lower conveying pipes 3 are arranged along the circumferential direction at the bottom of the lower box body 5, and the plurality of lower conveying pipes 3 are respectively communicated with the truss conveying pipes 2.

[0045] In this embodiment, the plurality of lower conveying pipes 3 can be evenly arranged along the circumferential direction at the bottom of the lower box body 5. The lower conveying pipes 3 can be communicated with the truss conveying pipes 2 in one-to-one correspondence.

[0046] As Figure 5 and 6 shown, according to an embodiment of the present utility model, the manifold 4 includes an annular manifold pipeline 41 arranged along the circumferential direction at the bottom of the lower box body 5, and the annular manifold pipeline 41 is communicated with a plurality of lower conveying pipes 3.

[0047] According to an embodiment of the present utility model, in addition to the annular manifold pipeline 41, the manifold 4 further includes at least one manifold straight pipe 42 and a manifold central pipe 43. The two ends of the manifold straight pipe 42 are respectively communicated with the annular manifold pipeline 41 and the manifold central pipe 43. The manifold central pipe 43 is communicated with the rocket engine, and the propellant in the truss conveying pipe 2 is guided to the rocket engine through the annular manifold pipeline 41, the manifold straight pipe 42 and the manifold central pipe 43 in sequence.

[0048] For example, the manifold 4 includes three manifold straight pipes 42. The three manifold straight pipes 42 are all used to communicate the annular manifold pipeline 41 and the manifold central pipe 43.

[0049] According to an embodiment of the present utility model, at the connection between the two ends of the truss conveying pipe 2 and the two end heads of the lower box body 5, annular sealing covers are respectively arranged at the two ends of the lower box body 5 to seal the two ends of the truss conveying pipe 2.

[0050] In this embodiment, the upper conveying pipe 1 can directly penetrate through the inner shell of the lower box body and be communicated with the truss conveying pipe 2, or can be communicated with the truss conveying pipe 2 through an opening provided on the annular sealing cover for communicating with the truss conveying pipe 2. The lower conveying pipe 3 can be communicated with the truss conveying pipe 2 through an opening provided on the annular sealing cover for communicating with the truss conveying pipe 2.

[0051] According to an embodiment of the present utility model, a cooling channel is further arranged along the axial direction between the inner shell 51 of the lower box body and the outer shell 52 of the lower box body.

[0052] In this embodiment, the cooling channel is used to fill a low-temperature medium (such as liquid nitrogen) to reduce the real-time temperature of the tank shell and maintain the tank shell (especially the tank inner shell) at a constant temperature. The shell-type propellant delivery structure can improve the mechanical properties of the stainless steel (such as cold-rolled hardened 301 stainless steel) tank shell and weld and reduce the material thickness of the tank shell. In addition, by providing a cooling channel, the shell-type propellant delivery structure can also reduce the weakening of the shell parent material and the influence on the weld performance due to heat input, reduce the difficulty of the tank manufacturing process, and improve the selectivity of the tank manufacturing process.

[0053] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shell-type propellant delivery structure for a stainless steel rocket tank, comprising a lower tank body, characterized in that: The lower box body includes a lower box inner shell and a lower box outer shell, and the lower box inner shell is sleeved on the inner side of the lower box outer shell; a stringer delivery pipe roughly along the axial direction is arranged between the lower box inner shell and the lower box outer shell, and a collecting pipe is arranged on the outer side of the bottom of the lower box body; one end of the stringer delivery pipe is connected with the collecting pipe, and the other end is connected with the upper box body cavity, so as to guide the propellant in the upper box body cavity to the collecting pipe for use by the rocket engine.

2. The shell-type propellant delivery structure according to claim 1, characterized in that: A plurality of beam conveying pipes are circumferentially arranged between the lower box inner shell and the lower box outer shell.

3. The shell-type propellant delivery structure according to claim 2, characterized in that: It also includes an upper box body, and an upper end delivery pipe communicating with the upper box body cavity and the beam delivery pipe is arranged at the bottom of the upper box body.

4. The shell-type propellant delivery structure according to claim 2, characterized in that: The bottom of the lower box body is provided with a lower end delivery pipe communicating with the beam delivery pipe and the collecting pipe.

5. The shell-type propellant delivery structure according to claim 3, characterized in that: A plurality of upper end conveying pipes are arranged at the bottom of the upper box body along the circumferential direction, and the plurality of upper end conveying pipes are respectively connected with the beam conveying pipes.

6. The shell-type propellant delivery structure according to claim 4, characterized in that: A plurality of lower end delivery pipes are arranged at the bottom of the lower box body along the circumferential direction, and the plurality of lower end delivery pipes are respectively connected with the beam delivery pipes.

7. The shell-type propellant delivery structure according to claim 6, characterized in that: The collecting pipe comprises an annular collecting pipe arranged along the circumferential direction of the bottom of the lower box body, and the annular collecting pipe is communicated with the plurality of lower end conveying pipes.

8. The shell-type propellant delivery structure according to claim 7, characterized in that: The collecting pipe also includes at least one collecting straight pipe and a collecting central pipe; the two ends of the collecting straight pipe are respectively connected to the annular collecting pipe and the collecting central pipe, and the collecting central pipe is connected to the rocket engine, and the propellant in the stringer delivery pipe is guided to the rocket engine through the annular collecting pipe, the collecting straight pipe and the collecting central pipe in sequence.

9. The shell-type propellant delivery structure according to claim 1, characterized in that: At the connection places between the two ends of the beam conveying pipe and the two end heads of the lower box body, annular sealing covers are respectively arranged at the two ends of the lower box body to seal the two ends of the beam conveying pipe.

10. The shell-type propellant delivery structure according to claim 1, characterized in that: A cooling channel along the axial direction is also provided between the lower box inner shell and the lower box outer shell.

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