Interlayer heat insulation conveying structure of common-bottom storage tank and carrier rocket

Abstract

The utility model provides an interlayer heat insulation conveying structure of a common-bottom storage box and a carrier rocket. The interlayer heat insulation conveying structure of the common-bottom storage box comprises an upper box (1), a lower box (4) arranged below the upper box (1), a conveying pipe (5) arranged in the lower box (4) and a supporting assembly arranged in the lower box (4). The upper box (1) and the lower box (4) are connected up and down through a fork-shaped ring (3); the supporting assembly is connected with the inner wall of the lower box (4); the outer side of the conveying pipe (5) is connected with the supporting assembly. One end of the conveying pipe (5) is connected with the bottom of the upper box (1), and the other end of the conveying pipe (5) is connected with the bottom of the lower box (4). Dead weight of the conveying pipe and deflection deformation of the conveying pipe caused by propellants in the pipe in the process of transferring and flying of the rocket body are reduced, and bending moment loads of flanges at the two ends of the conveying pipe are reduced. And through the soft supports and the supporting rods, the overall structural stability of the conveying pipe is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of storage box structure, concretely relates to a sandwich heat insulation conveying structure of common bottom storage box and carrier rocket. BACKGROUND

[0002] The propellant conveying pipeline structure of the storage box has an important influence on propellant conveying efficiency, flow resistance and rocket carrying efficiency. The common bottom storage box of the carrier rocket that has completed flight verification in the present price segment mostly adopts a propellant external conveying scheme, and the propellant in the upper tank reaches the engine through the conveying pipe arranged on the outer sidewall of the lower tank. The conveying pipeline structure is complex, not only introduces redundant structural weight, but also the protruding envelope formed by the pipeline and support arranged outside the tank leads to a complex aerodynamic shape of the rocket, and the difficulty of aerodynamic shape optimization and flight trajectory design increases. At present, the propellant conveying pipe in the upper tank penetrates through the lower tank to shorten the propellant conveying path, but the deflection deformation of the conveying pipe caused by the propellant in the conveying pipe and the weight of the conveying pipe itself during flight.

[0003] In summary, the existing technology has the following problems: the deflection deformation of the conveying pipe caused by the propellant in the conveying pipe and the weight of the conveying pipe itself during the flight of the existing rocket. UTILITY MODEL CONTENTS

[0004] The utility model provides a sandwich heat insulation conveying structure of common bottom storage box and carrier rocket, and solves the technical problem of how to reduce the deflection deformation of the conveying pipe caused by the propellant in the conveying pipe and the weight of the conveying pipe itself during the flight of the rocket.

[0005] To achieve the above-mentioned purpose, on the one hand, the utility model provides a sandwich heat insulation conveying structure of common bottom storage box, which comprises:

[0006] an upper tank, a lower tank arranged below the upper tank, a conveying pipe arranged in the lower tank, and a support assembly arranged in the lower tank;

[0007] the upper tank and the lower tank are connected through a fork type ring;

[0008] the support assembly is connected with the inner wall of the lower tank, and the outer side of the conveying pipe is connected with the support assembly;

[0009] one end of the conveying pipe is connected with the bottom of the upper tank, and the other end of the conveying pipe is connected with the bottom of the lower tank.

[0010] Specifically, the support assembly comprises an ear piece fixed on the inner wall of the lower tank and a support rod connected with the ear piece, and the outer side of the conveying pipe is connected with the support rod. By arranging the support rod, the deflection deformation of the conveying pipe caused by the self-weight of the conveying pipe and the propellant in the pipe during the transfer and flight of the rocket body is reduced, and the bending moment load of the flanges at both ends of the conveying pipe is reduced.

[0011] Specifically, a flow outlet flange is arranged at the center of the rear bottom of the upper tank, and a docking flange is arranged at the rear bottom of the lower tank.

[0012] The upper end of the conveying pipe is in sealed connection with the flow outlet flange, and the lower end of the conveying pipe is in sealed connection with the docking flange.

[0013] Specifically, the conveying pipe comprises an inner pipe, an outer pipe sleeved outside the inner pipe, a sandwiched heat insulation structure arranged between the inner pipe and the outer pipe, a soft support arranged between the outer pipe and the sandwiched heat insulation structure, an upper flange arranged at one end of the outer pipe, and a lower flange arranged at the other end of the outer pipe.

[0014] The upper flange is in sealed connection with the flow outlet flange, and the lower flange is in sealed connection with the docking flange.

[0015] Specifically, the conveying pipe further comprises a support clasp ring arranged outside the outer pipe, and the support clasp ring is connected with the support rod.

[0016] Specifically, the soft supports are spacedly arranged between the outer pipe and the sandwiched heat insulation structure, and the gap between the outer surface of the soft support and the inner wall of the outer pipe is less than 0.5 mm.

[0017] Specifically, the conveying pipe further comprises an outer compensator and an inner compensator arranged at one end close to the lower flange.

[0018] The outer compensator is arranged outside the outer pipe, and the inner compensator is arranged outside the inner pipe.

[0019] Specifically, three support rods are arranged, and the support rods are in a wavy shape.

[0020] Specifically, the support clasp ring is bolted with the support rod.

[0021] In another aspect, the utility model provides a carrying rocket, which is internally provided with the sandwiched heat insulation conveying structure of the shared bottom tank.

[0022] The technical effects of the above technical scheme are as follows: the support assembly is beneficial to reducing the deformation of the conveying pipe caused by the self weight of the conveying pipe and the propellant in the pipe during the transfer and flight of the rocket body, and reducing the bending moment load of the flanges at the two ends of the conveying pipe.

[0023] By setting the support rod, the overall structural stability of the conveying pipe is improved.

[0024] The setting of the soft support structure can improve the rigidity matching of the inner tube and the outer tube of the conveying pipe, and improve the external pressure bearing capacity of the outer tube of the conveying pipe. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the conveying pipe of the embodiment of the utility model;

[0026] Figure 2 is a cross-sectional structural schematic view of the interlayer heat insulation conveying structure of the common bottom storage tank of the embodiment of the utility model;

[0027] Figure 3 is the SA view of the embodiment of the utility model; Figure 2

[0028] Figure 4 is the SC view of the embodiment of the utility model; Figure 3 is a local enlarged structural schematic view of the SC of the embodiment of the utility model;

[0029] Figure 5 is a local enlarged structural schematic view of the SD of the embodiment of the utility model; Figure 3

[0030] Figure 6 is the SF view of the embodiment of the utility model; Figure 4

[0031] Figure 7 is the SE view of the embodiment of the utility model. Figure 5

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 1, upper box; 2, outflow flange; 3, fork type ring; 4, lower box; 5, conveying pipe; 6, support clasp; 7, support rod; 8, ear piece;

[0034] 51, upper flange; 52, inner tube; 53, interlayer heat insulation structure; 54, soft support; 55, outer tube; 56, inflation pipe nozzle; 57, outer compensator; 58, inner compensator heat insulation layer; 59, inner compensator; 510, live sleeve ring; 511, lower flange; 512, half pipe. DETAILED DESCRIPTION

[0035] ​​​​The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] This utility model embodiment provides a sandwich-insulated conveying structure for a common-bottom storage tank, such as... Figure 1 As shown, it includes: an upper box 1, a lower box 4 located below the upper box 1, a conveying pipe 5 located in the lower box 4, and a support assembly located in the lower box 4;

[0037] like Figure 2 As shown, the upper box 1 and the lower box 4 are connected by welding the upper and lower boxes together via a fork-shaped ring 3; the support assembly is connected to the inner wall of the lower box 4; the outer side of the conveying pipe 5 is connected to the support assembly; one end of the conveying pipe 5 is connected to the bottom of the upper box 1, and the other end of the conveying pipe 5 is connected to the bottom of the lower box 4.

[0038] like Figure 3 , Figure 4 As shown, the support assembly includes: lugs 8 fixed to the inner wall of the lower housing 4 and a support rod 7 connected to the lugs 8. The outer side of the delivery pipe 5 is connected to the support rod 7. The support assembly is used to reduce the deflection deformation of the delivery pipe 5 caused by the propellant inside the delivery pipe 5 and the weight of the delivery pipe 5 itself during the transport and flight of the rocket body. It can effectively reduce the bending moment load on the flange surfaces at both ends of the delivery pipe 5 and improve the sealing reliability of the flange mating surfaces of the delivery pipe 5.

[0039] An outlet flange 2 is provided at the center of the rear bottom of the upper tank 1, and a docking flange 41 is provided at the rear bottom of the lower tank 4; the upper end of the conveying pipe 5 is sealed to the outlet flange 2, and the lower end of the conveying pipe 5 is sealed to the docking flange 41, thereby realizing the internal conveying of propellant in the storage tank.

[0040] like Figure 1 As shown, the conveying pipe 5 includes: an inner pipe 52, an outer pipe 55 sleeved outside the inner pipe 52, a sandwich insulation structure 53 disposed between the inner pipe 52 and the outer pipe 55, a soft support 54 disposed between the outer pipe 55 and the sandwich insulation structure 53, an upper flange 51 disposed at one end of the outer pipe 55, and a lower flange 511 disposed at the other end of the outer pipe 55; the upper flange 51 is sealed to the outlet flange 2, and the lower flange 511 is sealed to the docking flange 41. A heat insulation cavity is formed between the inner pipe 52 and the outer pipe 55. When assembled with the storage tank, the upper and lower ends of the conveying pipe 5 are connected to the flanges in the storage tank through the upper flange 51 and the lower flange 511, respectively, for easy installation.

[0041] The outer tube 55 can be formed by hydraulic expansion of a seamless tube or by welding of a thin plate after wave pressing and roll bending. The main structure of the sandwich heat insulation structure 53 is a polyurethane foam heat insulation structure. The outer side of the heat insulation layer is wrapped with alkali-free proportion fiber cloth soaked in DW-3 glue by wet winding, and the outer surface is wrapped with single-sided aluminum-plated polyimide film by half-lapping method for one time (i.e. overlapping 2 layers), wherein the aluminum-plated layer faces outward, and the polyimide tape is used for edge sealing and fixing. The heat transfer and solar radiation heat between the inner and outer tubes are isolated.

[0042] As shown in Figure 5 The conveying pipe 5 further comprises a support clasp 6 arranged outside the outer tube 55, and the support clasp 6 is connected with a support rod 7, specifically, the support clasp 6 is bolted with the support rod 7.

[0043] The support rod 7 is wavy, which is beneficial to resist the deflection deformation of the conveying pipe 5 caused by the propellant in the conveying pipe 5 and the weight of the conveying pipe 5 during the transfer and flight of the arrow body. Preferably, the support rod 7 is provided with 5 support rods. The support rods 7 are uniformly fixed on the outer side of the conveying pipe 5 to increase the stability of the conveying pipe 5.

[0044] The soft supports 54 are uniformly and spacedly arranged between the outer tube 55 and the sandwich heat insulation structure 53, and the gap between the outer surface of the soft support 54 and the inner wall of the outer tube 55 is less than 0.5 mm. Further, the main structure of the soft support 54 is sponge foam, and the soft supports 54 are uniformly and spacedly arranged between the outer tube 55 and the sandwich heat insulation structure 53. The sponge foam is wrapped on the corresponding position of the sandwich heat insulation structure 53 by using transparent tape, and then the outer surface is wrapped with glass fiber tape by half-lapping method for n times (i.e. overlapping 2n layers) until the gap between the outer diameter of the sponge foam and the inner wall of the outer tube 55 is less than 0.5 mm. The soft support structure can improve the rigidity matching of the inner tube 52 and the outer tube 55 of the conveying pipe, and improve the external pressure bearing capacity of the outer tube 55 of the conveying pipe.

[0045] The conveying pipe 5 further comprises an outer compensator 57 and an inner compensator 59 arranged near one end of the lower flange 511. The outer compensator 57 is arranged outside the outer tube 55, and the inner compensator 59 is arranged outside the inner tube 52. The outer compensator 57 and the inner compensator 59 can be formed by hydraulic expansion after roll bending and welding of a thin plate. A live sleeve ring 510 is arranged at the outer edge of the lower flange 511, which facilitates quick disassembly and reduces maintenance difficulty and cost.

[0046] The main structure of the inner compensator heat insulation layer 58 is aerogel, which is wrapped on the corresponding position of the sandwich heat insulation structure 53 by using transparent tape. The outer side is wrapped with alkali-free proportion fiber cloth soaked in DW-3 glue by wet winding, and the outer surface is wrapped with single-sided aluminum-plated polyimide film by half-lapping method for one time (i.e. overlapping 2 layers), wherein the aluminum-plated layer faces outward, and the polyimide tape is used for edge sealing and fixing. In this way, the heat transfer and solar radiation heat between the inner and outer tubes can be isolated, and the expansion and deformation of the compensator can be ensured.

[0047] An inflation pipe nozzle 56 is arranged on the outer sidewall of the outer pipe 55, and the inflation pipe nozzle 56 is used for inflation protection during welding of the lower flange 511 and the half pipe 512 and internal pressure air tightness detection of the outer pipe 55.

[0048] The utility model discloses a conveying pipe is integrated product, can carry out internal pressure, external pressure, heat insulation test verification in part state, and after product is qualified, the flange of setting at the common bottom of storage tank, rear bottom is assembled and is connected, compared with the traditional double -layer pipe tank internal conveying scheme, need not use special tool to complete the butt joint assembly operation of internal pipe from the outer pipe, and the assembly process is simple and reliable.

[0049] The utility model discloses a kind of interlayer heat insulation conveying structures of common bottom storage tank, as shown in Figure 2 As shown, upper tank 1 and lower tank 4 are respectively provided with butt flange, and conveying pipe 5 is respectively connected with upper tank flange and lower tank flange, to realize internal conveying of storage tank propellant.The scheme of the utility model has light weight of conveying pipe structure, simple assembly operation, and high reliability.

[0050] The utility model further provides a kind of carrying rocket, which is provided with the interlayer heat insulation conveying structure of common bottom storage tank described above in the common bottom storage tank.

[0051] As shown in Figure 2 Upper tank 1 and lower tank 4 are connected by upper and lower welding of fork ring 3; lower tank 4 is provided with a supporting assembly, which includes supporting rod 7 and lug 8. As shown in Figure 6 Lug 8 is fixedly connected to the inner wall of lower tank 4, and supporting rod 7 is movably connected to lug 8; supporting snap ring 6 is arranged outside outer pipe 55. As shown in Figure 7 Supporting snap ring 6 is bolted to supporting rod 7.Supporting assembly can reduce the deflection deformation of conveying pipe caused by the weight of propellant in conveying pipe and the conveying pipe itself during rocket body transfer and flight, effectively reduce the bending moment load of the butt flange face of both ends of conveying pipe, and improve the sealing reliability of the butt joint face of conveying pipe flange.

[0052] The utility model has the following beneficial effects:

[0053] The soft supporting structure of the utility model can improve the rigidity matching of the inner pipe and outer pipe of the conveying pipe, and improve the external pressure bearing capacity of the outer pipe of the conveying pipe; the supporting assembly is arranged to reduce the deflection deformation of the conveying pipe caused by the weight of the conveying pipe and the propellant in the pipe during rocket body transfer and flight, and reduce the bending moment load of the flanges at both ends of the conveying pipe. Through the soft support and supporting rod, the overall structural stability of the conveying pipe is improved.

[0054] The above merely illustrates the specific implementation of the present application, and is not used to limit the scope of the present application. The components of the present application can be combined with each other under the condition of no conflict, and any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present application shall belong to the protection scope of the present application.

Claims

1. A sandwiched insulated conveyor structure for a co-base reservoir, characterized by, include: Upper box (1), lower box (4) located below the upper box (1), conveying pipe (5) located in the lower box (4), and support assembly located in the lower box (4); The upper box (1) and the lower box (4) are connected vertically by a fork-shaped ring (3); The support assembly is connected to the inner wall of the lower box (4); the outer side of the conveying pipe (5) is connected to the support assembly; One end of the conveying pipe (5) is connected to the bottom of the upper box (1), and the other end of the conveying pipe (5) is connected to the bottom of the lower box (4).

2. A sandwiched insulated transport structure for co- bottomed containers according to claim 1, characterized in that, The support assembly includes: an ear piece (8) fixed to the inner wall of the lower box (4) and a support rod (7) connected to the ear piece (8), and the outer side of the delivery pipe (5) is connected to the support rod (7).

3. A sandwiched insulated transport structure for co- bottomed containers according to claim 2, characterized in that, An outlet flange (2) is provided at the center of the rear bottom of the upper box (1), and a docking flange (41) is provided at the rear bottom of the lower box (4). The upper end of the conveying pipe (5) is sealed to the outlet flange (2), and the lower end of the conveying pipe (5) is sealed to the docking flange (41).

4. A sandwiched insulated transport structure for co- bottomed containers according to claim 3, characterized in that, The conveying pipe (5) includes: an inner pipe (52), an outer pipe (55) sleeved outside the inner pipe (52), a sandwich insulation structure (53) disposed between the inner pipe (52) and the outer pipe (55), a soft support (54) disposed between the outer pipe (55) and the sandwich insulation structure (53), an upper flange (51) disposed at one end of the outer pipe (55), and a lower flange (511) disposed at the other end of the outer pipe (55); The upper flange (51) is sealed to the outlet flange (2), and the lower flange (511) is sealed to the docking flange (41).

5. A sandwiched insulated transport structure for co- bottomed containers according to claim 4, characterized in that, The delivery pipe (5) further includes a support ring (6) disposed on the outside of the outer pipe (55), the support ring (6) being connected to the support rod (7).

6. A sandwiched insulated transport structure for co- bottomed containers according to claim 4, characterized in that, The soft supports (54) are spaced apart between the outer tube (55) and the sandwich insulation structure (53), and the gap between the outer surface of the soft supports (54) and the inner wall of the outer tube (55) is less than 0.5 mm.

7. A sandwiched insulated transport structure for co- bottomed containers according to claim 4, characterized in that, The delivery pipe (5) also includes an outer compensator (57) and an inner compensator (59) disposed at one end near the lower flange (511); The outer compensator (57) is located on the outside of the outer tube (55), and the inner compensator (59) is located on the outside of the inner tube (52).

8. A sandwiched insulated transport structure for co- bottomed containers according to claim 2, characterized in that, There are 3 support rods (7), and the support rods (7) are wavy.

9. A sandwiched insulated transport structure for co-base reservoirs according to claim 5, wherein, The support ring (6) is bolted to the support rod (7).

10. A launch vehicle, characterized by, The common-bottom tank is equipped with a sandwich-insulated transport structure as described in any one of claims 1-9.

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