Self-locking type casting submarine optical cable protection hinged pipe

Abstract

The utility model discloses a self-locking type casting submarine optical cable protection hinged pipe which comprises a plurality of protection pipes which are sequentially connected in a hinged mode. The protection tubes are composed of an upper protection tube and a lower protection tube which are arranged in a mirror symmetry mode. An upper protection tube self-locking end hook is arranged in the upper protection tube, and a lower protection tube self-locking end hook is arranged in the lower protection tube. The upper protection pipe self-locking end hook is located on the periphery of the upper protection pipe, and a clamping hook protrudes towards the central axis of the protection pipe and is provided with an inclined face so as to be matched with the lower protection pipe self-locking end hook of the lower protection pipe. The lower protection pipe self-locking end hook is arranged on the periphery of the lower protection pipe and corresponds to the upper protection pipe self-locking end hook in the upper protection pipe to form interlocking. It is worthy of noting that the upper protection tube self-locking end hook and the lower protection tube self-locking end hook are arranged in a cross-shaped staggered mode so that it can be guaranteed that the upper protection tube self-locking end hook can smoothly slide into the position between the lower protection tube self-locking end hooks when the upper protection tube and the lower protection tube are closed.

Description

Technical Field

[0001] The utility model belongs to the technical field of offshore petroleum engineering, and in particular relates to a self-locking cast submarine optical cable protection hinged tube. Background Art

[0002] At present, when submarine cables cross waterways or near the coast, it is often necessary to dump rocks on top of them to prevent damage. However, direct dumping of rocks can easily damage the cable, so a layer of casing needs to be added around the cable for protection.

[0003] However, the existing submarine cable protection pipes are complex in structure, time-consuming to install, and have high construction costs. In addition, on the hard seabed, the protection pipes have insufficient lateral stability and are difficult to dismantle and recycle underwater. In addition, the traditional customs optical cable protection pipes are connected by ball joints between each section of the pipe, and then fixed with screws, and each group needs to be connected.

[0004] Chinese patent CN219268455U discloses an articulated submarine cable protection tube, comprising a plurality of protection tubes articulated in sequence, the protection tubes comprising an upper protection tube, a lower protection tube and bolts, the upper protection tube and the lower protection tube both comprising a front tube head, a rear tube head and a connecting tube between the front tube head and the rear tube head, the upper and lower protection tubes are self-locked by hooks on both sides to form a submarine cable accommodation space. At the same time, the connecting tube of each unit is divided into a large ball head at the head and a small ball head at the tail. The large ball head bites the small ball head at the end connection to form a casting protection cavity.

[0005] Although the protective tube in the above solution can effectively protect submarine power cables and optical cables from external mechanical damage and damage, in a hard seabed environment, the protective tube needs to have sufficient stability to resist lateral forces (such as water currents, dragging forces caused by ship trawling, etc.) to prevent displacement or damage. Traditional connection methods may become loose under the action of persistent external forces, affecting the stability of the structure. At the same time, submarine operations usually face extreme environmental conditions, which places high demands on the maintenance, replacement, or dismantling and recycling of facilities. The front end and rear end of each protective pipe section in the prior art need to be fixed by ribs and bolts, which may still be a time-consuming process. Summary of the invention

[0006] The utility model aims to provide a self-locking cast submarine optical cable protection hinged tube to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: comprising: a plurality of protective tubes hingedly connected in sequence, the protective tubes comprising: an upper protective tube and a lower protective tube, the upper protective tube and the lower protective tube are arranged in mirror symmetry, and an upper protective tube self-locking end hook is arranged in the upper protective tube, and a lower protective tube self-locking end hook is arranged in the lower protective tube.

[0008] The upper protective tube self-locking end hook is arranged on the outer periphery of the upper protective tube. The hook in the upper protective tube self-locking end hook protrudes toward the central axis of the protective tube and has an inclined surface for cooperating with the lower protective tube self-locking end hook of the lower protective tube. The lower protective tube self-locking end hook is arranged on the outer periphery of the lower protective tube and corresponds to the upper protective tube self-locking end hook in the upper protective tube, and is used to form a self-locking connection structure with the upper protective tube self-locking end hook, and the upper protective tube and the lower protective tube are combined into a protective pipeline, and each hinged protective tube is connected by a head-to-tail self-locking hinge to form an accommodation space.

[0009] Among them, the upper protective tube self-locking end hook and the lower protective tube self-locking end hook are arranged in a cross shape, so as to allow the upper protective tube self-locking end hook to slide smoothly between the lower protective tube self-locking end hooks when the upper protective tube and the lower protective tube are closed.

[0010] Preferably, a split wing plate is provided on the outer side of the upper protective tube self-locking end hook and the lower protective tube self-locking end hook, and the above-mentioned split wing plates are screwed together.

[0011] Preferably, the upper protective tube self-locking end hook and the lower protective tube self-locking end hook are both arranged in an L-shaped structure.

[0012] Among them, the L-shaped structure of the self-locking end hook of the upper protective tube includes at least a first short arm and a first long arm, wherein the first short arm is fixedly connected to one end of the upper protective tube, and the first long arm is fixedly connected to the first short arm and can be deformed under the action of external force.

[0013] The L-shaped structure of the hook at the self-locking end of the lower protective tube includes at least a second short arm and a second long arm. The second short arm is fixedly connected to one end of the lower protective tube, and the second long arm is located between the second short arm and the spliced ​​wing plate in the lower protective tube, and cooperates with the above-mentioned second short arm to form a self-locking hinge groove for receiving the long arm part of the hook at the self-locking end of the upper protective tube.

[0014] Furthermore, the first short arm and the first long arm in the self-locking end hook of the upper protective tube are arranged at an angle.

[0015] Furthermore, the angle between the first short arm and the first long arm is 135 degrees.

[0016] Preferably, an anti-slip structure is also designed on the contact surface of the upper protective tube self-locking end hook and the lower protective tube self-locking end hook.

[0017] Preferably, the protection tube can rotate 360° around the central axis.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The design of the upper and lower protective tube self-locking hooks realizes the rapid self-locking of the upper and lower protective tubes, simplifies the installation process, and improves the construction efficiency. At the same time, the L-shaped structure with the angle design increases the stability and deformation resistance of the upper protective tube self-locking hook when subjected to lateral force, thereby providing better lateral stability in the hard seabed environment.

[0020] 2. On the other hand, in addition to the interlocking of the upper protective tube self-locking end hook and the lower protective tube self-locking end hook, the use of the split wing plate and screws provides a second fixation, ensuring stronger connection stability. The design of the split wing plate combined with the screw connection facilitates seabed operation, making maintenance, replacement or disassembly and recovery work more convenient and quick.

[0021] 3. The anti-slip structure on the contact surface prevents slippage between components due to moisture in an underwater environment, ensuring the reliability of the locked state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the protection tube;

[0025] In the figure: 1. protective tube; 2. upper protective tube; 3. lower protective tube; 4. self-locking end hook of upper protective tube; 5. self-locking end hook of lower protective tube; 6. spliced ​​wing plate; 7. first short arm; 8. first long arm; 9. second short arm; 10. second long arm; 11. self-locking hinge groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Reference Figure 1-Figure 2The utility model proposes a technical solution of a self-locking cast submarine cable protection hinged tube, comprising: a plurality of protection tubes 1 which are hingedly connected in sequence, and the protection tubes can rotate 360° around the central axis. The protection tube 1 comprises: an upper protection tube 2 and a lower protection tube 3, and the upper protection tube 2 and the lower protection tube 3 are arranged in mirror symmetry, and an upper protection tube self-locking end hook 4 is arranged in the upper protection tube 2, and a lower protection tube self-locking end hook 5 is arranged in the lower protection tube 3.

[0028] The upper protective tube self-locking end hook 4 is arranged on the outer periphery of the upper protective tube 2. The hook in the upper protective tube self-locking end hook 4 protrudes toward the central axis of the protective tube 1 and has an inclined surface for cooperating with the lower protective tube self-locking end hook 5 of the lower protective tube 3. The lower protective tube self-locking end hook 5 is arranged on the outer periphery of the lower protective tube 3 and corresponds to the upper protective tube self-locking end hook 4 in the upper protective tube 2, and is used to form a self-locking connection structure with the upper protective tube self-locking end hook 4, and the upper protective tube 2 and the lower protective tube 3 are combined into a protective pipeline, and each hinged protective tube 1 is connected by a head-to-tail self-locking hinge to form an accommodating space.

[0029] The upper protective tube self-locking end hook 4 and the lower protective tube self-locking end hook 5 are arranged in a cross shape, so as to allow the upper protective tube self-locking end hook 4 to slide smoothly between the lower protective tube self-locking end hooks 5 when the upper protective tube 2 and the lower protective tube 3 are closed.

[0030] This design enables the self-locking end hook 4 of the upper protective tube to be located below or above the self-locking end hook 5 of the lower protective tube when in the locked position (depending on the rotation direction), thereby achieving self-locking. When the upper protective tube 2 is rotated to a certain angle relative to the lower protective tube 3, the self-locking end hook 4 of the upper protective tube generates downward pressure through the interaction between its inclined surface and the self-locking end hook 5 of the lower protective tube, so that the upper protective tube 2 and the lower protective tube 3 are tightly locked together.

[0031] For example, when the upper protection tube 2 rotates to a certain angle relative to the lower protection tube 3, the upper protection tube self-locking end hook 4 generates downward pressure through the interaction between its inclined surface and the lower protection tube self-locking end hook 5, so that the upper protection tube 2 and the lower protection tube 3 are tightly locked together. This self-locking structure not only fixes the relative position of the two tubes, but also prevents accidental separation caused by external force.

[0032] In order to release the locked state, the upper protective tube 2 can be rotated in the opposite direction to release the pressure between the inclined surface of the upper protective tube self-locking end hook 4 and the lower protective tube self-locking end hook 5, thereby easily separating the upper protective tube 2 and the lower protective tube 3.

[0033] Wherein, a split wing plate 6 is arranged on the outer side of the upper protective tube self-locking end hook 4 and the lower protective tube self-locking end hook 5, and the two split wing plates 6 are screwed together.

[0034] In this embodiment, when the submarine optical cable needs to be inspected or maintained, the staff can easily remove the screws and open the protective tube 1 without having to completely dismantle the entire structure, which greatly simplifies the maintenance and repair work. At the same time, the combination of the split wing plate 6 fixed by the screws and the self-locking end hook 4 of the upper protective tube and the self-locking end hook 5 of the lower protective tube provides a double locking mechanism, ensuring that the connection of the protective tube 1 will not loosen or fall off even under extreme conditions.

[0035] The design of the spliced ​​wing plate 6 enhances the overall structural strength of the protective tube 1, allowing the protective tube 1 to better withstand physical impacts and pressure changes in the seabed environment, and through the screw connection, the installation process is more flexible. The joint tightness of the upper protective tube self-locking end hook 4 and the lower protective tube self-locking end hook 5 can be adjusted according to the site conditions to meet different installation requirements.

[0036] In addition, the joint of the spliced ​​wing plate 6 can be designed as a waterproof sealing structure to effectively prevent impurities such as seawater and silt from entering the interior of the protection tube 1, thereby protecting the submarine optical cable from damage.

[0037] In one embodiment, the upper protective tube self-locking end hook 4 and the lower protective tube self-locking end hook 5 are both arranged in an L-shaped structure.

[0038] Specifically, the L-shaped structure of the self-locking end hook 4 of the upper protective tube includes a first short arm 7 and a first long arm 8, wherein the first short arm 7 is fixedly connected to one end of the upper protective tube 2, and the first long arm 8 is fixedly connected to the first short arm 7 and can be deformed under the action of external force.

[0039] Correspondingly, the L-shaped structure of the hook 5 at the self-locking end of the lower protective tube also includes a second short arm 9 and a second long arm 10. The second short arm 9 is fixedly connected to one end of the lower protective tube 3, and the second long arm 10 is located between the second short arm 9 and the spliced ​​wing plate 6 in the lower protective tube 3, and cooperates with the second short arm 9 to form a self-locking hinge groove 11 for receiving the long arm portion of the hook 4 at the self-locking end of the upper protective tube.

[0040] In this embodiment, further, the L-shaped structural design of the upper protective tube self-locking end hook 4 and the lower protective tube self-locking end hook 5 makes the connection between the upper protective tube 2 and the lower protective tube 3 more stable. When the first long arm 8 of the upper protective tube self-locking end hook 4 is subjected to external force, it can be deformed, so that the upper protective tube self-locking end hook 4 can be more easily inserted into or separated from the self-locking hinge groove 11 in the lower protective tube self-locking end hook 5. This design not only ensures the stability of the connection, but also facilitates the operation.

[0041] Specifically, the first short arm 7 is fixedly connected to one end of the upper protective tube 2 to provide support for the upper protective tube self-locking end hook 4. The first long arm 8 is fixedly connected to the first short arm 7 and can be deformed under the action of external force, which makes the upper protective tube self-locking end hook 4 have a certain elasticity and is convenient for cooperation with the lower protective tube self-locking end hook 5.

[0042] The second short arm 9 of the lower protective tube self-locking end hook 5 is fixedly connected to one end of the lower protective tube 3 to provide support for the lower protective tube self-locking end hook 5. The second long arm 10 is located between the second short arm 9 and the spliced ​​wing plate 6 in the lower protective tube 3, and cooperates with the second short arm 9 to form a self-locking hinge groove 11 for receiving the first long arm 8 of the upper protective tube self-locking end hook 4. This structure enables the lower protective tube self-locking end hook 5 to be tightly matched with the upper protective tube self-locking end hook 4, thereby improving the connection stability between the upper protective tube 2 and the lower protective tube 3.

[0043] In one embodiment, the first short arm 7 and the first long arm 8 of the upper protective tube self-locking end hook 4 are arranged at an angle.

[0044] For example, the angle between the first short arm 7 and the first long arm 8 is specifically 135 degrees.

[0045] In this embodiment, the first short arm 7 and the first long arm 8 of the upper protective tube self-locking end hook 4 are arranged at an angle of 135 degrees. This design makes the upper protective tube self-locking end hook 4 have better elasticity and flexibility, and can better adapt to the connection requirements of different shapes.

[0046] Specifically, when the upper protective tube self-locking end hook 4 is subjected to external force, the angle between the first short arm 7 and the first long arm 8 can be changed, so that the upper protective tube self-locking end hook 4 can be more easily inserted into or disengaged from the self-locking hinge groove 11 in the lower protective tube self-locking end hook 5. At the same time, this angle design also increases the strength and stability of the upper protective tube self-locking end hook 4, allowing it to withstand greater pressure and tension.

[0047] In one embodiment, the contact surfaces of the upper protective tube self-locking end hook 4 and the lower protective tube self-locking end hook 5 are also designed with anti-slip textures or protrusions to increase friction and ensure a stable locking state in a seabed environment.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-locking cast submarine optical cable protective hinged tube, comprising: a plurality of protection tubes (1) connected in a hinged manner in sequence, the protection tube (1) comprising: an upper protection tube (2) and a lower protection tube (3), the upper protection tube (2) and the lower protection tube (3) being arranged in a mirror-symmetrical manner, and an upper protection tube self-locking end hook (4) being arranged in the upper protection tube (2), and a lower protection tube self-locking end hook (5) being arranged in the lower protection tube (3); It is characterized in that The upper protective tube self-locking end hook (4) is arranged on the outer periphery of the upper protective tube (2), and the hook in the upper protective tube self-locking end hook (4) protrudes toward the central axis of the protective tube (1) and has an inclined surface for cooperating with the lower protective tube self-locking end hook (5) of the lower protective tube (3). The lower protective tube self-locking end hook (5) is arranged on the outer periphery of the lower protective tube (3) and corresponds to the upper protective tube self-locking end hook (4) in the upper protective tube (2) and is used to form a self-locking connection structure with the upper protective tube self-locking end hook (4). The upper protective tube (2) and the lower protective tube (3) are combined into a protective pipeline, and each hinged protective tube (1) is connected by a head-to-tail self-locking hinge method to form an accommodation space. The upper protective tube self-locking end hook (4) and the lower protective tube self-locking end hook (5) are arranged in a cross shape, so as to allow the upper protective tube self-locking end hook (4) to smoothly slide between the lower protective tube self-locking end hooks (5) when the upper protective tube (2) and the lower protective tube (3) are closed.

2. The self-locking cast submarine cable protection hinged tube according to claim 1 is characterized in that : A split wing plate (6) is arranged on the outer side of the upper protective tube self-locking end hook (4) and the lower protective tube self-locking end hook (5), and the above (2) split wing plates (6) are screwed together.

3. The self-locking cast submarine cable protection hinged tube according to claim 1 is characterized in that : The upper protective tube self-locking end hook (4) and the lower protective tube self-locking end hook (5) are both arranged in an L-shaped structure; The L-shaped structure of the upper protective tube self-locking end hook (4) comprises at least a first short arm (7) and a first long arm (8), wherein the first short arm (7) is fixedly connected to one end of the upper protective tube (2), and the first long arm (8) is fixedly connected to the first short arm (7) and can be deformed under the action of an external force; The L-shaped structure of the hook (5) at the self-locking end of the lower protective tube comprises at least a second short arm (9) and a second long arm (10), wherein the second short arm (9) is fixedly connected to one end of the lower protective tube (3), and the second long arm (10) is located between the second short arm (9) and the spliced ​​wing plate (6) in the lower protective tube (3), and cooperates with the second short arm (9) to form a self-locking hinge groove (11) for receiving the long arm portion of the hook (4) at the self-locking end of the upper protective tube.

4. The self-locking cast submarine cable protection hinged tube according to claim 3 is characterized in that The first short arm (7) and the first long arm (8) in the upper protective tube self-locking end hook (4) are arranged at an angle.

5. The self-locking cast submarine optical cable protection hinged tube according to claim 4 is characterized in that The angle between the first short arm (7) and the first long arm (8) is 135 degrees.

6. The self-locking cast submarine optical cable protection hinged tube according to claim 1 is characterized in that The contact surfaces of the upper protective tube self-locking end hook (4) and the lower protective tube self-locking end hook (5) are also designed with an anti-slip structure.

7. The self-locking cast submarine cable protection hinged tube according to claim 1 is characterized in that The protective tube (1) can rotate 360° around the central axis.

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