Cabin section shell of underwater vehicle

Abstract

The invention provides an underwater vehicle cabin shell, which belongs to the field of underwater vehicles and comprises an outer shell cylinder, an inner shell cylinder and a framework, the inner shell cylinder is sleeved with the outer shell cylinder, and a gap is reserved between the outer circumferential wall of the inner shell cylinder and the inner circumferential wall of the outer shell cylinder. The framework is arranged in the gap and connected between the outer shell barrel and the inner shell barrel, the framework spirally extends around the central axis of the inner shell barrel, and the two ends of the framework in the extending direction extend to the two ends of the inner shell barrel respectively. The spirally extending plate body is arranged in the interlayer of the inner shell and the outer shell to serve as a framework, the structural strength of the cabin section is effectively improved, meanwhile, the inner space of the interlayer forms a whole and is spirally arranged between the inner shell and the outer shell in a surrounding mode, and when the pressure condition of the outer surface of the cabin section changes, it is guaranteed that the pressure condition in the interlayer cannot be unbalanced; and meanwhile, the problem that stress concentration is generated in the internal structure of the cabin section is avoided, and the compressive structural strength of the cabin section is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field, and particularly relates to a cabin shell of a submersible. BACKGROUND

[0002] The submersible refers to a small submarine capable of submerging under the water surface, and is mainly used for intelligent systems for deep-sea exploration, lifesaving, mine clearance and other high-risk underwater operations. At present, with the expansion of the application environment of the submersible, the demand for large submergence depth, high speed and low navigation noise of the submersible is gradually increasing, and thus new design requirements for the noise reduction performance and pressure resistance of the cabin shell of the submersible are put forward.

[0003] One of the current design schemes is that the cabin shell is designed as an inner-outer shell sandwich structure, and a plurality of ring plates are arranged in the sandwich layer at intervals as a sandwich skeleton, which can effectively improve the structural strength of the cabin shell. However, the above design brings new problems: 1) When the working condition of the navigation speed of the navigation vehicle changes or the heading changes, the water pressure on the outer surface of the cabin shell changes complexly, and the pressure conditions of different parts of the surface are also different, and the sandwich layer of the cabin shell is divided into a plurality of relatively independent closed spaces by the plurality of ring plates arranged at intervals, which may cause problems such as pressure imbalance or stress concentration in the cabin shell.

[0004] 2) In order to improve the noise reduction performance of the cabin shell, sound insulation or sound absorption and noise reduction materials such as polyurethane need to be filled in the sandwich layer; however, since the sandwich space between the two ring plates is closed by the two ring plates at both ends, either a through hole needs to be formed on the inner shell or the outer shell, and the filling material needs to be injected into the sandwich layer through the through hole, but this way will damage the surface structure of the inner shell and the outer shell, not only weakening the surface noise reduction performance of the cabin shell during navigation, but also weakening the structural integrity and structural strength of the cabin shell to some extent; or the inner shell and the outer shell need to be separated, the filling material is injected into the sandwich layer, and then the inner shell and the outer shell are reassembled and welded by ultrasonic transparent welding technology, but this way may form a poor condition such as virtual welding at the welding position of the skeleton and the inner shell and the outer shell, resulting in that the cabin shell cannot achieve the ideal pressure resistance structural strength. SUMMARY

[0005] Therefore, the present application provides a cabin shell of a submersible to solve the problem that the current cabin shell adopts an inner-outer shell sandwich structure design.

[0006] The technical scheme of the present application is implemented as follows: the present application provides a cabin shell of a submersible, which comprises an outer shell cylinder, an inner shell cylinder and a skeleton; the inner shell cylinder is sleeved in the outer shell cylinder, and a gap is left between the outer peripheral wall of the inner shell cylinder and the inner peripheral wall of the outer shell cylinder; the skeleton is arranged in the gap, and the skeleton is connected between the outer shell cylinder and the inner shell cylinder; the skeleton extends in a spiral line around the central axis of the inner shell cylinder, and the two ends of the extending direction of the skeleton extend to the two ends of the inner shell cylinder, respectively.

[0007] On the basis of the above technical scheme, preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0008] Further preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0009] Further preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0010] Further preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0011] On the basis of the above technical scheme, preferably, the framework is in a double helix structure around the central axis of the inner shell cylinder.

[0012] On the basis of the above technical scheme, preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0013] Further preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0014] On the basis of the above technical scheme, preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0015] On the basis of the above technical scheme, preferably, the gap is filled with a filler, the filler fills the part of the gap other than the framework, and the filler has a noise reduction performance.

[0016] The submarine cabin shell of the present application has the following advantages over the prior art: (1) The present application sets a helically extending plate body as a framework in the inner-outer shell interlayer, effectively improves the cabin structure strength, forms an integral interlayer space, and is helically arranged between the inner and outer shell bodies. When the cabin surface pressure changes, the interlayer pressure is balanced, and stress concentration in the cabin internal structure is avoided, greatly improving the cabin pressure structure strength.

[0017] (2) The present invention sets end caps at both ends of the interlayer and opens through holes on the end plates. The filler is injected into the interlayer under pressure through one through hole and suctioned under negative pressure through the other through hole, so that the filler can fully fill the entire interlayer and generate as few air bubbles or voids as possible, effectively improving the noise reduction performance of the compartment. At the same time, during the process of injecting filler into the interlayer, there is no need to damage the surface structure of the inner and outer shells, nor is there a need to weld the frame to the inner and outer shells, thus avoiding problems such as false welding. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of the outer shell of the submersible compartment of the present invention; Figure 2 This is a perspective view of the outer shell of the submersible compartment of the present invention; Figure 3 This is a perspective cross-sectional view of the outer shell of the submersible compartment of the present invention; Figure 4 This is a three-dimensional exploded view of the outer shell of the submersible compartment of the present invention; Figure 5 This is a perspective view of the skeleton of the present invention.

[0020] In the diagram: 1. Outer shell; 11. Conical shell; 2. Inner shell; 3. Skeleton; 301. Gap; 4. End plate; 401. Through hole. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1 As shown, combined with Figure 2 and Figure 3 The present invention provides a submersible compartment shell, comprising an outer shell cylinder 1, an inner shell cylinder 2, and a frame 3.

[0023] The outer shell cylinder 1 and the inner shell cylinder 2 have substantially the same outer contour shape, the inner shell cylinder 2 has the same length as the outer shell cylinder 1 and a smaller diameter, so that the inner shell cylinder 2 can be sleeved in the outer shell cylinder 1, and a gap 301 is left between the outer peripheral wall of the inner shell cylinder 2 and the inner peripheral wall of the outer shell cylinder 1.

[0024] The framework 3 is arranged in the gap 301, the framework 3 is connected between the outer shell cylinder 1 and the inner shell cylinder 2, and the framework 3 itself is a sheet, which can be found to be similar to a spring when viewed in isolation. Therefore, the framework 3 extends in a spiral line around the central axis of the inner shell cylinder 2, and the two ends of the extension direction of the framework 3 extend to the two ends of the inner shell cylinder 2, respectively. Compared with the design of the existing inner-outer shell sandwich structure in which multiple ring plates are arranged at intervals, the spiral framework 3 has the following advantages: first, the spiral framework 3 is arranged around the gap 301 (i.e. the sandwich space), so that the gap 301 is not divided into multiple independent closed spaces by the framework 3, but is always a whole space structure, and the gap 301 is also spirally arranged between the outer shell cylinder 1 and the inner shell cylinder 2. Therefore, when the pressure on the outer surface of the cabin section changes, the internal pressure of the gap 301 as a whole space also changes as a whole, so that the pressure imbalance in the gap 301 does not occur, and the pressure on the outer surface of the cabin section is also transmitted to the framework 3, which is also transmitted to the whole inner-outer shell sandwich structure in a spiral manner, so that the stress concentration is avoided; second, when the filler with noise reduction performance is injected into the gap 301 as a whole space, the filler can fill the whole space without being hindered.

[0025] In Figure 3 In an optional embodiment shown in the drawings, the filler is also provided, which has noise reduction performance, so that the filler is a sound insulation or sound absorption noise reduction material, specifically, it can be a polyurethane material. The filler fills the part inside the gap 301 except the framework 3, at this time, the filler is also arranged in a spiral around the whole sandwich structure, and the framework 3 is a sheet structure and is very thin, so that the filler basically occupies the whole gap 301 and covers the inner shell cylinder 2, so as to achieve good sound insulation and noise reduction effect.

[0026] In Figure 1 and Figure 2 In an optional embodiment shown in the drawings, two end plates 4 are also provided, which are respectively arranged at the two ends of the gap 301, and the end plates 4 can be assembled by welding or buckling, so as to close the gap 301.

[0027] In Figure 1 and Figure 2In an optional embodiment shown, the end plate 4 is provided with a through hole 401, which is connected between the gap 301 and the external environment. The filling material is injected into the gap 301 from the through hole 401. The through hole 401 is provided on both ends, so that when the filling material is injected into the gap 301 from the through hole 401 on one end, the air in the gap 301 can be discharged from the through hole 401 on the other end, thereby avoiding leaving gaps or bubbles in the gap 301.

[0028] In Figure 3 In an optional embodiment shown, the method for manufacturing the hull of the submersible cabin includes the following steps. Step one, the outer shell cylinder 1, the inner shell cylinder 2, and the framework 3 are prepared and assembled in place. The outer shell cylinder 1, the inner shell cylinder 2, and the framework 3 can be independently supported and then welded into a whole by ultrasonic transparent welding technology before filling the filling material. Because the filling material has not been injected into the gap 301 during welding, the transparent welding can be fully performed to avoid poor conditions such as false welding. Alternatively, the outer shell cylinder 1, the inner shell cylinder 2, and the framework 3 can be integrally formed by laser additive manufacturing or casting, which can greatly improve the overall structural strength of the cabin. Step two, the filling material is pressurized and injected into the gap 301 from one of the through holes 401, and is negative pressure suctioned from the other through hole 401 until the gap 301 is filled with the filling material. By pressurized injection on one side and negative pressure suction on the other side, the filling material can be as evenly and fully filled as possible in the gap 301, and bubbles or gaps can be avoided. Step three, the bubble or pore condition of the filling material in the gap 301 is detected by the perspective scanning technology. If the bubble rate or the pore rate does not meet the standard, the surface of the outer shell cylinder 1 or the inner shell cylinder 2 needs to be perforated at the position where the bubble or gap exists, and the filling material needs to be supplemented.

[0029] In Figure 4 In an optional embodiment shown, the framework 3 is in a double helix structure around the central axis of the inner shell cylinder 2. Compared with the single helix structure, the double helix structure can greatly improve the overall structural strength of the framework 3 combined with the outer shell cylinder 1 and the inner shell cylinder 2, thereby improving the deep water pressure resistance performance of the cabin.

[0030] In Figure 4 In an optional embodiment shown, the outer shell cylinder 1 and the inner shell cylinder 2 are conical cylinders 11 towards the same end, so that the cabin is in a conical column shape. The cabin with this profile is suitable for installing the power system of the vehicle. The conical tail of the cabin can be provided with a propeller connected with the power system in the cabin.

[0031] In Figure 5In an optional embodiment shown, the pitch of the helical line of the part of the framework 3 around the conical cylinder 11 increases with the decrease of the gap 301, so that the stress distribution of the framework 3 is more uniform under the condition of the outer surface of the cabin section being pressed, thereby improving the compression resistance of the cabin section.

[0032] In Figure 1 In an optional embodiment shown, the shell cylinder 1, the inner shell cylinder 2 and the framework 3 are integrally formed, specifically, can be made by laser additive manufacturing means or casting means, which can greatly improve the overall structural strength of the cabin section.

[0033] As Figure 1 shown, in combination with Figure 2 and Figure 3 , a submarine of the present application adopts the submarine cabin section shell of any one of the above embodiments, and the submarine power drive system is installed in the submarine cabin section shell.

[0034] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A submersible compartment hull, characterized in that: It includes an outer shell (1), an inner shell (2), and a frame (3); The inner shell (2) is fitted inside the outer shell (1), and a gap (301) is left between the outer peripheral wall of the inner shell (2) and the inner peripheral wall of the outer shell (1). The skeleton (3) is set in the gap (301). The skeleton (3) is connected between the outer shell cylinder (1) and the inner shell cylinder (2). The skeleton (3) extends in a spiral shape around the central axis of the inner shell cylinder (2). The two ends of the skeleton (3) extend to the two ends of the inner shell cylinder (2) respectively.

2. The hull of a submersible section according to claim 1, characterized in that: It also includes a filler that fills the interior of the gap (301) except for the skeleton (3) and has noise reduction properties.

3. The hull of a submersible section according to claim 2, characterized in that: It also includes two end plates (4), which are respectively covered at both ends of the gap (301).

4. The hull of a submersible section according to claim 3, characterized in that: The end plate (4) has a through hole (401) which connects the gap (301) to the external environment, and filler material is injected into the gap (301) through the through hole (401).

5. The hull of a submersible section according to claim 4, characterized in that: The method for manufacturing the outer shell of the submersible section includes the following steps: Step 1: Prepare the outer shell (1), inner shell (2), and frame (3) and assemble them in place; Step 2: Pressurize and inject filler into the gap (301) through one of the through holes (401), and draw outward with negative pressure from the other through hole (401) until the filler fills the gap (301). Step 3: Use perspective scanning technology to detect whether the air bubbles or pores in the filler in the gap (301) meet the standards.

6. The hull of a submersible section according to claim 1, characterized in that: The skeleton (3) surrounds the central axis of the inner shell (2) in a double helix structure.

7. The hull of a submersible section according to claim 1, characterized in that: The outer shell (1) and the inner shell (2) are a matching conical cylinder (11) with the same facing end.

8. The hull of a submersible section according to claim 7, characterized in that: The pitch of the helix of the portion of the skeleton (3) that surrounds the conical cylinder (11) increases as the diameter of the gap (301) decreases.

9. The hull of a submersible section according to claim 1, characterized in that: The outer shell (1), inner shell (2) and frame (3) are integrally formed.

10. A submersible, characterized in that: The submersible compartment shell according to any one of claims 2 to 5 is used, wherein the submersible compartment shell is used to install the submersible power drive system.

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