Deep-sea high-pressure-resistant porthole assembly with redundant sealing and failure protection structure

Abstract

The invention discloses a deep-sea high-pressure-resistant porthole assembly with a redundant sealing and failure protection structure, and relates to the technical field of high-pressure portholes, the deep-sea high-pressure-resistant porthole assembly comprises a main body, a sealing frame is arranged at the bottom end of the main body, a sun gear is arranged in the sealing frame, and multiple sets of planet gears meshed with teeth of the sun gear are arranged in the sealing frame; threaded columns are fixed to the top ends of the planet wheels. The main body is slowly installed in the sealing frame, the sun gear is driven by the crank to rotate, the multiple sets of planet gears rotate synchronously, the threaded columns connected with the planet gears rotate along with the sun gear, the main body is driven to move towards the interior of the sealing frame, the planet gears drive the sealing rings to rotate when rotating, and the outer threads of the sealing rings enable the movable rings to move in the axial direction; when the main seal loses efficacy, the standby seal can still keep the sealing performance, the structure is easy and convenient to operate, the sealing pressure can be evenly distributed, reliable sealing under the deep sea high-pressure environment is ensured, and the leakage risk is effectively controlled.

Description

Technical Field

[0001] This invention relates to the field of high-pressure porthole technology, specifically to a deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structures. Background Technology

[0002] Deep-sea high-pressure resistant porthole components are key structural parts of deep-sea manned equipment. Their technological background stems from the need for highly reliable observation windows in deep-sea exploration. Early submersibles used ordinary tempered glass or resin materials, but at depths of thousands of meters, pressure deformation could lead to optical distortion or structural failure. As the depth of deep-sea exploration continues to increase, traditional single-layer porthole structures have gradually been replaced by composite lamination technology. By combining high-strength acrylic resin with polycarbonate materials, a transparent medium with gradient pressure resistance is formed. Advances in materials science have driven the application of supramolecular polymer materials, whose cross-linked molecular chains can effectively disperse hydrostatic pressure. In terms of structural design, modern portholes use biconvex or hemispherical contours to optimize stress distribution. Combined with the prestressed assembly process of metal flanges, the entire component forms a mechanically self-balancing system. Regarding sealing technology, the vulcanization bonding process of deep-sea cables is borrowed, forming a chemically bonded transition layer at the polymer-metal interface. The pressure testing standards are derived from the technical specifications for submarine pressure hulls, requiring cyclic pressurization testing to verify fatigue life.

[0003] Most existing deep-sea high-pressure resistant porthole components have the following drawbacks: Traditional multi-stage sealing structures rely on manual step-by-step adjustment of bolts, hydraulic cylinders, or split sealing rings, which is not only cumbersome to operate but also difficult to ensure uniform distribution of sealing pressure. Taking the gas compressor seal as an example, the position of the carbon rings needs to be adjusted one by one. The lever mechanism is prone to deformation under high pressure, causing local leakage. More seriously, when the main seal fails, the traditional manual storm cover requires manual judgment and operation, with a significant response lag. It cannot respond to the sudden pressure rise in the deep-sea environment in a timely manner. This delay may cause the compartment to be intruded by high-pressure seawater in a very short time, causing serious safety hazards. The actual application of ship portholes shows that when a leak occurs, the process of manually installing the spare cover is too time-consuming and difficult to effectively control the danger. Summary of the Invention

[0004] Based on this, the purpose of this invention is to provide a deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structures to solve the problems of cumbersome adjustment and uneven pressure in traditional deep-sea porthole sealing structures, the lag in manual response when the main seal fails, which easily leads to rapid intrusion of high-pressure seawater, and the excessively long installation time of existing manual backup cover plates, which makes it difficult to effectively control leakage risks.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structure, comprising a main body, a sealing frame at the bottom of the main body, a sun gear inside the sealing frame, multiple planetary gears meshing with the teeth of the sun gear inside the sealing frame, a threaded post fixed to the top of the planetary gear, a second sealing ring at the top of the sealing frame, a movable ring inside the sealing frame, a first sealing ring fixed to the top of the movable ring, and a sealing ring inside the sealing frame.

[0006] By adopting the above technical solution, the operator slowly installs the main body into the sealing frame by fitting one end of the main body into the sealing frame. When the main body is installed into the sealing frame, the operator can install the external crank handle and the sun gear fixed at the bottom of the crank handle into the main body, where they mesh with the teeth of multiple sets of planetary gears. This ensures that the multiple sets of planetary gears rotate synchronously while the sun gear rotates. When the operator manually turns the crank handle, the multiple sets of planetary gears rotate synchronously, causing the threaded column fixed at one end of the planetary gear to rotate synchronously as well. At this time, the external thread on the outside of the threaded column meshes with the internal thread on the inside of the main body. This ensures that while the threaded column rotates, it can drive the main body to move into the sealing frame. After installation, the second sealing ring on the outside of the main body is squeezed against the outside of the sealing frame, thus preventing water leakage in the high-pressure deep-sea environment. This achieves the forced synchronous meshing characteristic of the planetary gears, reduces the pressure deviation of each sealing ring, and avoids the risk of local leakage caused by lever deformation.

[0007] Furthermore, the threaded post has an external thread on its outer side, the main body has an internal thread that mates with the threaded post, the sun gear has a crank handle fixed to its top, and the sealing frame has a working cavity inside.

[0008] By adopting the above technical solution, when the planetary gears rotate, the multiple sets of planetary gears inside the sealing frame will rotate the sealing rings on their outer sides. The internal teeth of the sealing rings mesh with the teeth of the planetary gears. When the sealing rings rotate, the external threads on their outer sides will cause the internal threads of the moving rings to rotate along the external threads of the sealing rings. At this time, multiple sets of fixing blocks are also provided on the outer side of the moving rings to ensure that the moving rings will not rotate but will only move vertically. When the moving rings move to the top a certain distance, they will squeeze the first sealing rings at the top, thereby achieving the function of maintaining a seal when the second sealing rings fail to seal.

[0009] Furthermore, the sealing frame has a sliding cavity inside that mates with the moving ring, the moving ring has multiple sets of fixing blocks on its outer side, the sealing ring has a toothed groove inside that mates with the planetary gear, the sealing frame has a rotating shaft inside that mates with the sun gear, the sealing ring has an external thread on its outer side, and the moving ring has an internal thread inside that mates with the sealing ring.

[0010] By adopting the above technical solution, a uniform distribution of sealing pressure can be ensured, and the second seal remains sealed even when the main seal fails, guaranteeing tightness and enabling timely response in deep-sea environments. This effectively controls potential hazards in the event of a leak.

[0011] In summary, the present invention has the following main advantages: By slowly installing the main body into the sealing frame, the sun gear is rotated by a crank handle, causing multiple planetary gears to rotate synchronously. The threaded column connected to the planetary gears rotates accordingly, driving the main body to move into the sealing frame, thus compressing the second sealing ring to achieve initial sealing. When the planetary gears rotate, they drive the sealing ring to rotate, and the external thread of the sealing ring causes the moving ring to move axially, pushing the first sealing ring to form a secondary seal. When the main seal fails, the backup seal can still maintain its sealing performance. This structure is easy to operate, can evenly distribute sealing pressure, ensure reliable sealing in deep-sea high-pressure environments, and effectively control leakage risks. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0014] Figure 3 For the present invention Figure 2 Enlarged view of point A;

[0015] Figure 4 This is a partial structural schematic diagram of the present invention;

[0016] Figure 5 This is a partial structural diagram of the present invention;

[0017] Figure 6 This is an enlarged view of section B in the figure of the present invention.

[0018] In the diagram: 1. Main body; 2. Sealing frame; 3. Sun gear; 4. Planet gear; 5. Threaded column; 6. Sealing ring; 7. Moving ring; 8. Sliding cavity; 9. First sealing ring; 10. Handle; 11. Second sealing ring; 12. Working cavity. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] A deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structures, such as Figures 1-6 As shown, the device includes a main body 1, a sealing frame 2 at the bottom of the main body 1, a sun gear 3 inside the sealing frame 2, multiple planetary gears 4 meshing with the teeth of the sun gear 3 inside the sealing frame 2, threaded posts 5 fixed to the top of the planetary gears 4, a second sealing ring 11 at the top of the sealing frame 2, a movable ring 7 inside the sealing frame 2, a first sealing ring 9 fixed to the top of the movable ring 7, and a sealing ring 6 inside the sealing frame 2. When the operator manually turns the crank 10, the multiple planetary gears 4 will rotate synchronously, thereby causing the threaded posts 5 fixed to one end of the planetary gears 4 to rotate. The threaded column 5 will also rotate synchronously. At this time, the external thread set on the outside of the threaded column 5 meshes with the internal thread set inside the body 1. This ensures that while the threaded column 5 is rotating, it can drive the body 1 to move into the sealing frame 2. After installation, the second sealing ring 11 set on the outside of the body 1 will be squeezed on the outside of the sealing frame 2. This achieves water leakage prevention in the high-pressure deep-sea environment. This achieves the forced synchronous meshing characteristic of the planetary gear, makes the clamping force of each sealing ring 6 deviate, and avoids the risk of local leakage caused by lever deformation.

[0022] For example, the threaded column 5 has an external thread on its outer side, and the main body 1 has an internal thread that mates with the threaded column 5. The sun gear 3 has a crank handle 10 fixed to its top. The sealing frame 2 has a working chamber 12 inside. When the planetary gear 4 rotates, the multiple sets of planetary gears 4 inside the sealing frame 2 will rotate the sealing ring 6 on its outer side. The internal teeth of the sealing ring 6 mesh with the teeth of the planetary gear 4. When the sealing ring 6 rotates, the external thread on its outer side will cause the internal thread of the moving ring 7 to rotate along the external thread of the sealing ring 6. At this time, multiple sets of fixing blocks are also provided on the outer side of the moving ring 7 to ensure that the moving ring 7 will not rotate when it rotates, but will only move vertically. When the moving ring 7 moves to the top of the top a certain distance, it will squeeze the first sealing ring 9 on its top, so that when the second sealing ring 11 fails to seal, the first sealing ring 9 can maintain the sealing function.

[0023] For example, the sealing frame 2 has a sliding cavity 8 inside that mates with the moving ring 7. Multiple sets of fixing blocks are provided on the outer side of the moving ring 7. The sealing ring 6 has a toothed groove inside that mates with the planetary gear 4. The sealing frame 2 has a rotating shaft inside that mates with the sun gear 3. The sealing ring 6 has external threads on its outer side, and the moving ring 7 has internal threads inside that mate with the sealing ring 6. This design ensures a uniform distribution of sealing pressure, and even when the main seal fails, the second seal remains sealed, guaranteeing tightness and enabling timely responses in deep-sea environments. This effectively controls potential hazards in the event of a leak.

[0024] The working principle of this invention is as follows: When in use, the operator slowly installs the end of the main body 1 that is fitted into the sealing frame 2 into the sealing frame 2. When the main body 1 is installed into the sealing frame 2, the operator can install the external crank handle 10 and the sun gear 3 fixed at the bottom of the crank handle 10 into the main body 1 and mesh with the teeth of the multiple sets of planetary gears 4 set inside the main body 1, so as to ensure that the multiple sets of planetary gears 4 can rotate synchronously while the sun gear 3 is rotating.

[0025] When the operator manually turns the crank handle 10, multiple planetary gears 4 will rotate synchronously, causing the threaded column 5 fixed at one end of the planetary gear 4 to also rotate synchronously. At this time, the external thread on the outside of the threaded column 5 meshes with the internal thread on the inside of the main body 1, so as to ensure that while the threaded column 5 is rotating, it can drive the main body 1 to move into the sealing frame 2. After installation, the second sealing ring 11 on the outside of the main body 1 will be squeezed on the outside of the sealing frame 2, so as to prevent water leakage in the high-pressure deep-sea environment. This achieves the forced synchronous meshing characteristic of the planetary gears, so as to reduce the pressure deviation of each sealing ring 6 and avoid the risk of local leakage caused by lever deformation.

[0026] While the planetary gear 4 is rotating, the multiple sets of planetary gears 4 inside the sealing frame 2 will rotate the sealing ring 6 on its outer side. The internal teeth of the sealing ring 6 mesh with the teeth of the planetary gear 4. When the sealing ring 6 rotates, its outer side is provided with external threads, which will cause the internal threads of the moving ring 7 to rotate along the external threads of the sealing ring 6. At this time, multiple sets of fixing blocks are also provided on the outer side of the moving ring 7 to ensure that the moving ring 7 will not rotate when it rotates, but will only move vertically. When the moving ring 7 moves to the top to a certain distance, it will squeeze the first sealing ring 9 provided at its top, so that the first sealing ring 9 can maintain the sealing function when the second sealing ring 11 fails to seal.

[0027] The above structure achieves ease of operation, ensures uniform distribution of sealing pressure, and guarantees that the second seal remains sealed even when the main seal fails, ensuring tightness and enabling timely response in deep-sea environments. This effectively controls potential hazards in the event of a leak.

[0028] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structure, comprising a main body (1), characterized in that: The main body (1) is provided with a sealing frame (2) at the bottom. A sun gear (3) is provided inside the sealing frame (2). Multiple planet gears (4) that mesh with the teeth of the sun gear (3) are provided inside the sealing frame (2). A threaded column (5) is fixed at the top of the planet gear (4). A second sealing ring (11) is provided at the top of the sealing frame (2). A movable ring (7) is provided inside the sealing frame (2). A first sealing ring (9) is fixed at the top of the movable ring (7). A sealing ring (6) is provided inside the sealing frame (2).

2. The deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structure according to claim 1, characterized in that: The threaded post (5) has an external thread on its outer side, and the main body (1) has an internal thread that mates with the threaded post (5) inside.

3. A deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structure according to claim 1, characterized in that: The top of the sun gear (3) is fixed with a crank handle (10), and the sealing frame (2) has a working cavity (12) inside.

4. A deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structure according to claim 1, characterized in that: The sealing frame (2) has a sliding cavity (8) inside that cooperates with the moving ring (7), and multiple sets of fixing blocks are provided on the outside of the moving ring (7).

5. A deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structure according to claim 1, characterized in that: The sealing ring (6) has a toothed groove inside that mates with the planetary gear (4), and the sealing frame (2) has a rotating shaft inside that mates with the sun gear (3).

6. A deep-sea high-pressure resistant porthole assembly with redundant sealing and failure protection structure according to claim 1, characterized in that: The sealing ring (6) has an external thread on its outer side, and the movable ring (7) has an internal thread that mates with the sealing ring (6).

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