Installation protection device for multi-section full-sea-depth ceramic pressure-resistant shell

Abstract

The invention discloses an installation protection device for a multi-section full-sea-depth ceramic pressure-resistant shell, and belongs to the technical field of deep-sea unmanned underwater vehicles, the installation protection device comprises a flow guide cover body, a support frame body and a protection shell, an axially extending installation chamber is formed in the flow guide cover body, the support frame body is fixed in the installation chamber in the flow guide cover body, and the protection shell is arranged in the flow guide cover body. The N protective shells are arranged in the mounting chamber in an axial arrangement manner and are fixed on the support frame body; the installation and protection device for the multi-section full-sea-depth ceramic pressure-resistant shell has the remarkable advantages in multiple aspects of supporting and fixing, modular expansion, hydrodynamic force optimization, safety guarantee and the like, and more reliable technical support is provided for deep sea exploration tasks.

Description

Technical Field

[0001] The invention belongs to the technical field of deep-sea unmanned submersibles, and in particular relates to an installation protection device for a multi-section full-sea-depth ceramic pressure-resistant shell. Background Art

[0002] With the increasing demand for deep-sea resources, environment and geological research, the research and development and application of deep-sea submersibles have become the key direction of deep-sea technology. The full-sea-depth submersible can reach a maximum working depth of 11,000 meters, covering the deepest waters on Earth. It has autonomous movement capabilities, good operability and a small rearrangement ratio, which significantly improves the efficiency and flexibility of deep-sea exploration. This type of submersible can be widely used in deep-sea geological surveys, biological sampling, mineral resource exploration and scientific experiments, and has become an important equipment for abyssal observation. Compared with traditional submersibles, deep-sea submersibles need to overcome challenges such as extreme pressure, temperature and corrosion in their design, and place higher requirements on pressure-resistant structures and connection technologies.

[0003] Spherical ceramic pressure hulls have been widely used in deep-sea submersibles due to their excellent mechanical properties and good rearrangement ratio. At the same inner diameter, the spherical structure is lighter and has better bearing capacity than the cylindrical hull. However, the load-carrying capacity of a single spherical ceramic pressure hull is limited, and it is difficult to meet the diverse equipment installation requirements in complex deep-sea missions. In addition, the current spherical ceramic pressure hulls still have shortcomings in installation and protection connection: traditional fixing methods may not be able to completely eliminate stress concentration under extreme external pressure environments, which can easily cause shell damage; the structural design of the protection and connection device is relatively simple and lacks adaptability, which limits the modular expansion capability. Therefore, it is necessary to design an efficient connection and protection device for a multi-section spherical ceramic pressure hull to enhance its carrying capacity, reliability and mission adaptability, and provide more robust technical support for deep-sea exploration. Summary of the invention

[0004] In view of the problems existing in the prior art regarding the load-bearing capacity, stress concentration protection and modular expansion adaptability of spherical ceramic pressure hulls in extreme deep-sea pressure environments, the present invention provides an installation protection device for a multi-section full-sea-depth ceramic pressure hull.

[0005] The present invention is implemented as follows: a multi-section full-sea-depth ceramic pressure-resistant shell installation and protection device is characterized in that it includes a fairing body, a support frame body and a protective shell, an axially extending installation chamber is formed inside the fairing body, the support frame body is fixed in the installation chamber inside the fairing body, N protective shells are arranged in an axial manner in the installation chamber and fixed on the support frame body, and the protective shell forms a wrapping shell for the spherical ceramic pressure-resistant shell.

[0006] In the above technical solution, preferably, the protective shell is composed of an upper shell and a lower shell, and the upper shell and the lower shell are connected to form a protective cavity that wraps the spherical ceramic pressure-resistant shell, and the upper part of the upper shell and the lower part of the lower shell form an opening connecting the outside and the protective cavity.

[0007] In the above technical solution, preferably, the openings of the upper shell and the lower shell form an annular cylindrical opening structure.

[0008] In the above technical solution, preferably, N axially arranged pressure-resistant shell connection protection units are formed in the deflector body, and the pressure-resistant shell connection protection unit includes a connecting frame and at least two protective shells fixed on the connecting frame, and the connecting frame is fixed to the supporting frame body.

[0009] In the above technical solution, preferably, the connecting frame forms a planar frame with a through hole, and the protective shell is embedded in the through hole of the connecting frame.

[0010] In the above technical solution, preferably, the connecting edges of the upper shell and the lower shell form a flange ring portion located at the center line of the protective shell, and the flange ring portion is fixedly connected to the connecting frame.

[0011] In the above technical solution, preferably, the connecting frame is provided with water-permeable holes penetrating through the upper and lower end surfaces.

[0012] In the above technical solution, preferably, the support frame body includes a support disc and a connecting cross bar, the support disc forms a radial support structure for the deflector body, the support disc is axially spaced in the deflector body, the connecting cross bar extends axially and is connected between the support discs, and the connecting frame is fixed to the connecting cross bar.

[0013] In the above technical solution, preferably, the connecting cross bar is arranged on both sides of the installation chamber of the deflector body and is provided with axially extending slots, and both sides of the connecting frame are arranged in the slots and fixed by reinforced square tubes arranged in the slots.

[0014] In the above technical solution, preferably, the backflow cover includes a front air guide cover, an intermediate air guide cover and a rear air guide cover which are axially arranged in sequence, the installation chamber is formed in the intermediate air guide cover, and the front air guide cover, the intermediate air guide cover and the rear air guide cover are provided with a water permeable port communicating with the inner side.

[0015] Advantages and effects:

[0016] The installation protection device designed by the present invention forms an efficient support and comprehensive protection structure for the SiC ceramic spherical pressure-resistant shell by combining a polymer protective shell, a connecting frame and a fairing. The polymer protective shell not only has excellent toughness and pressure resistance, but also can effectively disperse external stress, reduce the concentrated effect of seawater pressure on the shell, and avoid damage to the ceramic shell due to its high brittleness. At the same time, the lightweight characteristics of the polymer material reduce the weight of the overall structure, while meeting the deep-sea pressure resistance requirements, optimizing the rearrangement ratio design of the submersible.

[0017] In terms of structural scalability, the present invention uses modular design to connect the pressure-resistant shell to the protective structure as an expansion unit, so that multiple groups of spherical ceramic pressure-resistant shells can be flexibly assembled. Each group of shells can be freely selected for combination and expansion to adapt to the load requirements of different tasks, thereby realizing the multifunctionality of the structure. This modular expansion capability not only enhances the adaptability of the equipment in complex deep-sea tasks, but also simplifies subsequent maintenance and replacement operations, and improves the efficiency of equipment use.

[0018] In addition, the installation protection device uses ABS plastic deflector to wrap the pressure hull connection protection structure inside. The deflector not only provides additional physical protection, but also optimizes the hydrodynamic characteristics of the glider through streamlined design, reduces underwater resistance, and improves the movement efficiency of the submersible. At the same time, the overall structure of the device is designed to avoid direct exposure to seawater pressure and only bears its own weight before entering the water. This pressure isolation design has been verified by finite element analysis and can effectively ensure the safety and reliability of the system.

[0019] The multi-section, full-sea-depth ceramic pressure-resistant hull installation protection device of the present invention has significant advantages in many aspects such as support and fixation, modular expansion, fluid dynamics optimization, and safety assurance, providing more reliable technical support for deep-sea exploration missions.

[0020] In addition to the above advantages, by modularizing multiple SiC ceramic spherical shells into a multi-section pressure-resistant shell structure, the device can evenly share the extreme pressure of the deep sea, avoiding the potential failure risk caused by concentrated pressure on a single shell. The modular design optimizes the mechanical distribution, making the overall system more resistant to pressure, thereby further improving the safety and reliability of deep-sea operations.

[0021] The polymer protective shell wrapping design not only provides basic support, but also effectively improves the overall structural stability of the device by all-round constraints on the spherical ceramic shell. The combined design of the connecting frame and the connecting crossbar forms a rigid frame while providing axial support, preventing the multi-section structure from relative displacement or loosening during operation, thereby ensuring the long-term stable operation of deep-sea missions.

[0022] The modular pressure hull can be flexibly adjusted according to mission requirements, including the type and quantity of payload. Different hull units can carry various deep-sea exploration equipment, such as sensors, cameras, sampling devices, etc., providing more functional options for the submersible to perform tasks such as geological exploration, biological sampling or deep-sea environmental monitoring, and enhancing the comprehensive capabilities of deep-sea operations.

[0023] The independence of the spherical shell modules and the standardized design of the connection protection device make the transportation and installation process of the equipment more convenient. Each module can be transported separately and assembled quickly, without the need for complex disassembly or assembly of the entire device, which significantly reduces the initial preparation cost and time for deep-sea operations.

[0024] The multi-section shell structure design facilitates the maintenance and replacement of a single shell unit. Once a module has a problem, only the module needs to be partially disassembled and repaired without affecting the normal use of other shell units. This maintenance method greatly reduces downtime and improves the operating efficiency of the device.

[0025] By utilizing the flexible combination of multiple modular shells, efficient configuration of shell resources can be achieved under different mission requirements. Unused shell units can be retained for other submersibles or subsequent missions, avoiding resource waste and thus improving the economy and use value of the entire equipment.

[0026] The modular spherical shell structure can disperse the impact of the external environment on the device, including extreme conditions such as deep-sea strong pressure, water flow disturbance and low temperature. The polymer protective shell not only increases the pressure resistance, but also provides thermal insulation protection for the ceramic shell, avoiding damage to the shell due to sudden changes in ambient temperature and extending the service life of the equipment.

[0027] In summary, the device has achieved multi-dimensional optimization in terms of pressure resistance, structural stability, multi-task adaptability, operational convenience, resource utilization and environmental adaptability through a multi-section modular design, providing a more complete solution for deep-sea exploration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 is a cross-sectional view of the present invention;

[0030] Figure 3 is a three-dimensional diagram of the protective shell installation structure of the present invention;

[0031] Figure 4 is a schematic structural diagram of a pressure-resistant casing connection protection unit in this embodiment;

[0032] Figure 5 It is a structural schematic diagram of the connecting frame in the present invention. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In order to further illustrate the structure of the present invention, the detailed description is as follows in conjunction with the accompanying drawings:

[0034] See also Figure 1 , Figure 2 and Figure 3 , an installation and protection device for a multi-section full-sea-depth ceramic pressure-resistant shell, comprising a guide cover body, a support frame body and a protective shell 1.

[0035] The shroud of an underwater glider is mainly used to optimize the fluid dynamic performance, improve the navigation efficiency and reduce the energy consumption by reducing the resistance of the glider when sailing in the water. At the same time, the shroud plays a protective role, which can seal the equipment inside the glider to prevent external water flow, marine impurities or organisms from damaging the equipment. In addition, the shroud can also optimize the appearance of the glider, so that it can perform underwater gliding tasks more stably. An axially extending installation room is formed inside the shroud body. The inverted shroud includes a front shroud 2, an intermediate shroud 3 and a rear shroud 4 arranged in sequence axially. The front shroud, the intermediate shroud and the rear shroud are made of ABS plastic. The intermediate shroud has four water-permeable holes on the upper and lower sides to provide space for the 10,000-meter-resistant watertight connectors that connect the cabins, avoid water accumulation and reduce weight. Similarly, in order to avoid water accumulation in the front shroud and the rear shroud while achieving the effect of reducing weight, four water-permeable holes are opened on the front shroud and the rear shroud. The front shroud, the intermediate shroud and the rear shroud also play a role in optimizing the hydrodynamic characteristics of the overall structure.

[0036] The front fairing is designed to be a smooth ellipsoid to reduce the water flow resistance and vortex phenomenon during navigation, thereby improving the gliding efficiency and stability. The rear fairing is designed to be tapered and smooth, so that the water flow can smoothly transition to the tail of the glider, thereby reducing the wake resistance. The installation room is formed in the middle fairing, and the front fairing, the middle fairing and the rear fairing are provided with water permeable ports that communicate with the inside. In an underwater glider with a ceramic pressure-resistant shell installed inside, the main function of the fairing to set the water permeable port is to balance the internal and external water pressure, avoid damage to the fairing or the pressure-resistant shell due to the pressure difference, and at the same time improve the working depth and stability of the glider. By opening the water permeable ports at the front middle and rear ends of the fairing, it can not only guide the water flow to pass smoothly through the internal space, reduce the local vortex effect and gliding resistance, but also prevent the resonance phenomenon caused by the water pressure difference, thereby improving the stability of the glider's operation. In addition, the distribution design of the water permeable ports can also optimize the internal heat exchange and drainage effect, ensuring the adaptability and performance of the glider in different working environments.

[0037] The support frame is fixed in the installation room inside the air deflector body and serves as the basic support structure of the ceramic pressure-resistant shell.

[0038] N protective shells are arranged in an axial manner in the installation room and fixed on the support frame. The protective shell forms a shell that wraps the spherical ceramic pressure-resistant shell, and plays a role in supporting, protecting and fixing the ceramic pressure-resistant shell. The protective shell is composed of an upper shell and a lower shell. The upper shell and the lower shell are connected to form a protective cavity that wraps the spherical ceramic pressure-resistant shell. The upper part of the upper shell and the lower part of the lower shell form an opening that connects the outside and the protective cavity. The upper shell and the lower shell are made of polypropylene. The openings of the upper shell and the lower shell form an annular cylindrical opening structure. This structural design not only facilitates the installation and disassembly of the ceramic pressure-resistant shell and improves the assembly efficiency through the split structure of the upper shell and the lower shell, but also facilitates subsequent maintenance and replacement. The protective shell is fixed on the support frame in an axial arrangement to ensure the stability of the pressure-resistant shell in the installation room, and can effectively resist vibration and external force impact in the underwater environment, thereby improving the structural reliability. In addition, the connecting opening between the upper shell and the lower shell forms an annular cylindrical structure, which connects the protection cavity with the external water flow, and can quickly achieve internal and external water pressure balance, avoiding stress concentration in the shell due to pressure difference, thereby better protecting the ceramic pressure-resistant shell, extending its service life and improving its working performance.

[0039] The annular cylindrical opening design of the upper and lower hemispherical shells is located at the upper and lower ends of the sphere, and is opposite to the water permeable opening of the ceramic pressure-resistant shell. The precise alignment of the opening position with the water permeable opening of the pressure-resistant shell helps water flow quickly into and out of the shell, ensuring that the internal and external water pressures can be quickly balanced, reducing the stress effect of the pressure difference on the shell; the vertical cylindrical opening structure optimizes the water flow channel, reduces water vortex and turbulence, and thus reduces hydrodynamic resistance. In addition, the shape of the cylindrical opening improves the structural strength of the opening area, prevents deformation or damage under high-pressure conditions, and further enhances the pressure resistance and operating stability of the entire machine.

[0040] N axially arranged pressure-resistant shell connection protection units are formed in the air guide cover, and the pressure-resistant shell connection protection unit includes a connection frame 5 and at least two protection shells fixed on the connection frame. In this embodiment, please refer to Figure 4 , two protective shells are installed on each connecting frame. The pressure-resistant shell connection protection unit adopts a modular design consisting of a connecting frame and multiple protective shells, which is convenient for overall installation, disassembly and replacement in the deflector, reducing the complexity of assembly and maintenance and improving operational efficiency. The connecting frame is fixed to the support frame. For details, please refer to Figure 5The connecting frame forms a plane frame with a through hole, and the protective shell is embedded in the through hole of the connecting frame. The material of the connecting frame is 6061 aluminum alloy, which is hard-oxidized to prevent seawater corrosion and optimize the appearance. The connecting edge of the upper shell and the lower shell forms a flange ring located at the midline position of the protective shell, and the flange ring is fixed to the connecting frame. The connecting frame forms a plane frame with a through hole, and the protective shell is embedded in the through hole. The connecting frame is fixed by the flange ring located at the midline position, so that the protective shell is evenly stressed. The connecting frame is fixed to the support frame, which further enhances the structural stability of the whole machine and can effectively resist the impact of external water pressure and vibration on the equipment. In order to reduce the weight of the connecting frame and achieve the effect of eliminating the water accumulation between the protective shells, so as to facilitate the diving and floating of the overall structure, the connecting frame is provided with a water-permeable hole that passes through the upper and lower end surfaces. The design of the water-permeable hole can connect the water flow inside and outside the deflector, achieve rapid water pressure balance, reduce the pressure difference between the inside and outside of the shell, and avoid stress concentration. At the same time, the water-permeable hole design reduces the local fluid resistance and optimizes the fluid dynamic performance of the glider. By axially arranging multiple connection protection units, the internal space of the air duct can be rationally utilized, the equipment integration can be improved, and multi-functional requirements can be met.

[0041] The support frame includes a support disc 6 and a connecting cross bar 7. The connecting cross bar and the support disc are made of 6061 aluminum alloy and are hard-oxidized to prevent seawater corrosion. The support disc is a ring structure to avoid interference with the pressure-resistant shell connection protection structure, avoid water accumulation, and reduce weight. The support disc forms a radial support structure for the shroud body. The support disc is axially spaced in the shroud body. There are three support discs, which are respectively arranged at both ends of each group of pressure-resistant shell connection protection structures and connected to the connecting cross bar, the front shroud, the middle shroud, and the rear shroud by bolts. The support disc forms a radial support in the shroud body, evenly dispersing the force of the external water pressure on the shroud and enhancing the overall pressure resistance. The support discs arranged axially at intervals are connected by connecting cross bars to form an overall frame structure with multi-point support, which further improves the stability of the support frame. The connecting cross bar extends axially and is connected between the support discs, and the connecting frame is fixed to the connecting cross bar. The connecting crossbar is arranged on both sides of the installation chamber of the fairing body and is provided with an axially extending slot. The two sides of the connecting frame are arranged in the slot and are fixed with bolts through the reinforced square tube 8 arranged in the slot. The material of the reinforced square tube is 6061 aluminum alloy, which is hard-oxidized to prevent seawater corrosion. The structure is a tubular through structure to avoid water accumulation and reduce weight. The connecting crossbar extends axially and is provided with a slot, providing a precisely positioned installation channel. The two sides of the connecting frame are embedded in the slot and fixed by the reinforced square tube to ensure the reliable connection between the connecting frame and the support frame. This design facilitates the rapid installation and fixing of the connecting frame and avoids loose connection. The axially extending slot design reduces the obstruction of the structure to the internal water flow, helps the water flow to pass smoothly, thereby reducing the fluid resistance of the glider and improving the hydrodynamic performance. The slot diversion characteristics can guide the water flow to maintain a relatively stable flow direction near the connecting crossbar, avoid water flow deflection or turbulence caused by the crossbar, thereby ensuring the orderliness of the overall flow field inside the fairing.

[0042] The support frame adopts a design form of a combination of discs and crossbars, which not only reduces the amount of material used and the overall weight, but also reasonably divides the internal space of the fairing, optimizes the equipment layout, and reserves space for the installation of other devices. The multi-dimensional support structure formed by the support disc and the connecting crossbar can effectively absorb and disperse the vibration and impact during operation, avoid displacement or damage of the internal equipment of the fairing due to vibration, and improve the reliability of the glider operation.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An installation and protection device for a multi-section full-sea-depth ceramic pressure hull, characterized in that: It includes a deflector body, a support frame body and a protective shell. An axially extending installation chamber is formed inside the deflector body. The support frame body is fixed in the installation chamber inside the deflector body. N protective shells are arranged in the installation chamber in an axial manner and fixed on the support frame body. The protective shells form a wrapping shell for the spherical ceramic pressure-resistant shell.

2. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 1, characterized in that: The protective shell is composed of an upper shell and a lower shell, which are connected to form a protective cavity that wraps the spherical ceramic pressure-resistant shell, and the upper part of the upper shell and the lower part of the lower shell form an opening that connects the outside with the protective cavity.

3. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 2 is characterized in that: The openings of the upper shell and the lower shell form an annular cylindrical opening structure.

4. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 3 is characterized in that: N axially arranged pressure-resistant shell connection protection units are formed in the deflector body, and the pressure-resistant shell connection protection units include a connection frame and at least two protection shells fixed on the connection frame, and the connection frame is fixed to the support frame body.

5. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 4 is characterized in that: The connecting frame forms a plane frame with through holes, and the protective shell is embedded in the through holes of the connecting frame.

6. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 5, characterized in that: The connecting edges of the upper shell and the lower shell form a flange ring portion located at the center line of the protective shell, and the flange ring portion is fixedly connected to the connecting frame.

7. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 6, characterized in that: The connecting frame is provided with water-permeable holes penetrating the upper and lower end surfaces.

8. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 7, characterized in that: The support frame body includes a support disc and a connecting cross bar. The support disc forms a radial support structure for the deflector body. The support disc is axially spaced in the deflector body. The connecting cross bar extends axially and is connected between the support discs. The connecting frame is fixed to the connecting cross bar.

9. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 8, characterized in that: The cross-connecting rods are arranged on both sides of the installation chamber of the deflector body and are provided with axially extending slots. Both sides of the connecting frame are arranged in the slots and fixed by reinforced square tubes arranged in the slots.

10. The installation protection device for a multi-section full-sea-depth ceramic pressure hull according to claim 1 or 9, characterized in that: The reverse flow cover comprises a front flow guide cover, a middle flow guide cover and a rear flow guide cover which are arranged in sequence axially, the installation chamber is formed in the middle flow guide cover, and the front flow guide cover, the middle flow guide cover and the rear flow guide cover are provided with water permeable ports communicating with the inner side.

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