A deep-sea optical cable dry-wet transition terminal joint and operation method thereof

Abstract

The invention discloses a submarine communication equipment technology, aiming to provide a deep-sea optical cable dry-wet transition terminal joint and an operation method thereof. The key points of the technical solution are as follows: a deep-sea optical cable input end sealing module is used for sealing the deep-sea optical cable access position to a dry cabin; a dry cabin is used to withstand external seawater pressure; a wet cabin is used to balance pressure; a multi-core optical fiber pressure-resistant cabin penetration component is used to connect the dry cabin and the wet cabin; an optical fiber output interface module is located at the wet cabin terminal and is used to mate with a wet-plug optical fiber connector assembly through an oil pipe; a pipe clamp is used to fix the terminal as a whole and connect it to an equipment cabin installation panel; the product has oil filling and pressure compensation functions, can adapt to working conditions above 3,000 meters underwater, and can customize the number of optical cable inputs and hoses and wet-plug optical fiber connector assembly outputs according to user needs, and has high flexibility and applicability; the invention is applicable to the technical field of submarine communication equipment.

Description

Technical Field

[0001] The present invention relates to a submarine communication equipment technology, and more specifically, to a deep-sea optical cable dry-wet transition terminal joint and an operation method thereof. Background Art

[0002] With the development of marine resources and the deepening of marine scientific research, the demand for submarine communication equipment is growing. As an important submarine communication medium, the stability and reliability of the umbilical cable are crucial to the entire communication system. However, the existing deep-sea optical cable dry-wet transition terminal joints often cannot meet the requirements of oil filling and pressure compensation under deep-water conditions, and lack flexibility and applicability. Therefore, there is an urgent need for a deep-sea optical cable dry-wet transition terminal joint that can adapt to working conditions above 3,000 meters underwater and has high flexibility and applicability. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a deep-sea optical cable dry-wet transition terminal joint and an operating method thereof. The product has oil filling and pressure compensation functions, can adapt to working conditions above 3,000 meters underwater, and can customize the number of optical cable inputs and oil pipes and wet-plug optical fiber connector assembly outputs according to user needs, with high flexibility and applicability.

[0004] To achieve the above object, the present invention provides the following technical solution: a deep-sea optical cable dry-wet transition terminal joint, comprising:

[0005] The deep-sea optical cable input end sealing module is used to seal the deep-sea optical cable access to the dry tank;

[0006] Dry tank, used to withstand external seawater pressure;

[0007] Wet tanks, used for pressure equalization;

[0008] Multi-core optical fiber pressure-resistant penetration parts are used to connect dry cabins and wet cabins;

[0009] The optical fiber output interface module is located at the terminal of the wet tank and is used to mate with the wet-plug optical fiber connector assembly through the oil pipe;

[0010] Pipe clamp, used to fix the terminal as a whole and connect it to the equipment compartment mounting panel.

[0011] The present invention is further configured as follows: a dry cabin fixing pressure plate is provided at the connection between the deep-sea optical cable input end sealing module and the dry cabin, two sealing structures for blocking seawater from entering the terminal along the outer sheath or inner sheath of the optical cable are respectively provided in the deep-sea optical cable input end sealing module, a leak detection port for checking the installation quality of the sealing structure is provided on the outer shell of the deep-sea optical cable input end sealing module, and a standard plug for closing the leak detection port after the leak detection is completed is provided in the leak detection port.

[0012] The present invention is further configured as follows: two O-rings are provided at both ends of the dry cabin to seal with matching parts, and a leak detection port for checking the installation quality of the O-ring is provided on the outer shell of the dry cabin, and a standard plug is provided in the leak detection port for closing the leak detection port after the leak detection is completed.

[0013] The present invention is further configured as follows: a dry tank fiber coiling box fixing frame is arranged inside the dry tank, and a dry tank fiber coiling box is arranged on the dry tank fiber coiling box fixing frame for fusing the optical fibers inside the deep-sea optical cable with the optical fibers led out of the multi-core optical fiber cabin penetration component and providing sufficient space for coiling the excess optical fibers.

[0014] The present invention is further configured as follows: the wet tank is an oil-filled pressure balance tank, the oil pipe led out from the terminal thereof acts as a pressure compensator, and the wet tank is filled with oil and connected to the wet tank through a wet plug-in optical fiber connector assembly.

[0015] The present invention is further configured as follows: the pressure in the wet tank can be automatically adjusted according to the external environmental pressure, a wet tank fiber coiling box fixing frame is provided inside the wet tank, and a wet tank fiber coiling box is provided on the wet tank fiber coiling box fixing frame for fusing the optical fiber in the tail oil pipe with the optical fiber led out of the multi-core optical fiber cabin penetration component and providing sufficient space for coiling the excess optical fiber.

[0016] The present invention is further configured as follows: the multi-core optical fiber pressure-resistant cabin penetration component comprises a dry-wet cabin partition plate separating a dry cabin and a wet cabin, and a multi-core optical fiber cabin penetration component installed on the dry-wet cabin partition plate and fixed by a cabin penetration component fixing plate; the multi-core optical fiber pressure-resistant cabin penetration component withstands axial pressure from the wet cabin to the dry cabin, and meets the pressure resistance and sealing requirements between the multi-core optical fiber pressure-resistant cabin penetration component partition plate, the optical fiber and the multi-core optical fiber pressure-resistant cabin penetration component shell.

[0017] The present invention is further configured as follows: the optical fiber output interface module adopts a standard interface matching the oil pipe, and the wet cabin, optical fiber output interface module, oil pipe and wet plug optical fiber connector assembly constitute a pressure compensation unit to ensure normal operation in deep sea conditions.

[0018] The present invention is further configured as follows: there are two groups of pipe clamps for supporting and fixing the terminal as a whole, and installing it on the equipment cabin installation panel, and clamping and installing it by means of upper and lower half structures through screw fastening.

[0019] An operating method for a deep-sea optical cable dry-wet transition terminal joint, characterized in that it comprises the following steps:

[0020] S1. Structural preparation: Before installing the deep-sea optical cable dry-wet transition terminal joint, you first need to prepare various components, including the deep-sea optical cable input end sealing module, dry cabin, wet cabin, multi-core optical fiber pressure-resistant cabin penetration parts, optical fiber output interface module and pipe clamp. After ensuring that all components are intact, follow the steps below to install;

[0021] S2. Installation of sealing module: Install the sealing module at the input end of the deep-sea optical cable to the position of the dry compartment, and ensure that the two sealing structures of the sealing module are evenly and tightly wrapped on the outer sheath and inner sheath of the optical cable. Then, use the leak detection port to check the installation quality of the sealing structure to ensure that there is no leakage. After the leak detection is completed, use the standard plug to seal the leak detection port;

[0022] S3. Installation of dry tank: Fix the dry tank on the equipment cabin, check whether the O-rings at both ends of the dry tank are correctly installed, and use the leak detection port to check the sealing. After confirmation, close the leak detection port;

[0023] S4. Installation of wet tank: Install the wet tank on the other side of the dry tank, ensure that its oil filling function is normal, use the oil pipe to connect the wet plug fiber optic connector assembly, and ensure that the oil pipe is filled with oil smoothly. The pressure in the wet tank should be able to automatically adjust according to the external environmental pressure and remain stable;

[0024] S5. Installation of the penetration parts: Install the multi-core optical fiber pressure-resistant penetration parts between the dry cabin and the wet cabin, ensure that they are stable and can withstand the axial pressure from the wet cabin, and check the sealing of the penetration parts to ensure that there is no leakage;

[0025] S6. Connection of optical fiber output interface module: Connect the optical fiber output interface module to the wet tank terminal to ensure that it matches the oil pipe well. The module should be able to connect smoothly with the wet pluggable optical fiber connector assembly through the oil pipe to ensure normal operation;

[0026] S7, optical fiber fusion: complete the optical fiber fusion operation to ensure that all optical fibers are connected correctly;

[0027] S8. Installation of pipe clamps: Finally, use pipe clamps to fix the terminal connector as a whole on the installation panel of the equipment cabin to ensure a stable installation. Use an upper and lower half structure and clamp it by screw fastening;

[0028] S9. Final inspection: After completing the above steps, conduct a final inspection on the entire deep-sea optical cable wet-dry transition terminal joint to confirm the stability and sealing of all components, perform pressure testing and record the test results for inspection to ensure that it achieves the expected performance.

[0029] The beneficial effects of the present invention are:

[0030] 1. Compared with the prior art, the deep-sea optical cable dry-wet transition terminal joint of the present invention adopts advanced sealing technology and pressure compensation design, which significantly improves the stability of the optical cable in the deep-sea environment, can adapt to extreme pressure and temperature conditions, and ensures stable operation under deep-sea conditions; first, the double sealing structure of the input end sealing module can effectively block the infiltration of seawater along the outer sheath or inner sheath of the optical cable, thereby ensuring the safety of the internal optical fiber. In addition, the design of the multi-core optical fiber pressure-resistant penetration parts between the dry cabin and the wet cabin not only realizes the effective separation of the dry and wet cabins, but also can withstand the axial pressure from the wet cabin, ensuring the stability and sealing of the connection. This technical advantage enables the terminal joint to have good pressure resistance and durability in the complex environment of the deep sea, and can cope with the erosion of high pressure and corrosive seawater, greatly improving the service life and stability of the deep-sea optical cable.

[0031] 2. The design of the dry-wet transition terminal joint of the deep-sea optical cable of the present invention fully considers the working performance in extreme deep-sea environments; the oil-filled pressure balance function of the wet cabin can automatically adjust the pressure in the cabin according to the pressure changes of the external environment, avoiding structural damage and optical fiber performance degradation caused by drastic changes in external pressure. At the same time, the optical fiber output interface module adopts a standardized interface design to ensure compatibility with wet-plug optical fiber connector components, making connection and maintenance work more efficient and convenient, ensuring the reliability of the connection and the stability of the signal. The realization of this series of performance optimization not only improves the overall operating efficiency of the deep-sea optical cable system, but also reduces maintenance costs and difficulties, providing more reliable technical support for deep-sea communications.

[0032] 3. The present invention has significant advantages in durability and reliability, especially for the special requirements of deep-sea environment; the sealing design of dry and wet compartments, combined with the use of O-rings, can effectively prevent the penetration of seawater and extend the service life of the equipment. In addition, all connecting parts are carefully designed and strictly leak-tested to ensure the sealing and pressure resistance of the system after installation. This design concept effectively reduces the probability of failure of the equipment due to environmental factors during long-term use and improves the reliability of the overall system. The durability of the deep-sea optical cable dry-wet transition terminal joint can not only adapt to long-term deep-sea operating environments, but also reduce the cost investment due to frequent maintenance.

[0033] 4. The present invention also makes targeted designs in terms of maintenance convenience; first, the standardized design of each component of the system enables the damaged parts to be quickly replaced during maintenance, reducing downtime. In addition, the setting of the leak detection port allows the integrity of the sealing structure to be checked at any time during use, so as to discover potential problems in time and avoid serious consequences caused by small problems. The upper and lower half structure design of the pipe clamp is also convenient for quick installation and disassembly, which improves the efficiency of maintenance work. By simplifying the maintenance process, the present invention not only reduces the workload of operators, but also improves the overall availability of the equipment, making the maintenance and management of deep-sea optical cables more efficient; it has a reasonable structure, is easy to manufacture, is easy to operate, avoids the defects of the prior art, can meet the needs of long-term, stable and reliable communications in the deep sea, and is suitable for promotion and implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a main structural diagram of the dry-wet transition terminal joint of the deep-sea optical cable of the present invention.

[0035] Figure 2 It is a right side structural diagram of the deep-sea optical cable dry-wet transition terminal joint of the present invention.

[0036] Figure 3 It is a structural diagram of the deep-sea optical cable input end sealing module in the deep-sea optical cable dry-wet transition terminal joint of the present invention.

[0037] Figure 4 It is a structural diagram of the dry compartment in the dry-wet transition terminal joint of the deep-sea optical cable of the present invention.

[0038] Figure 5 It is a structural diagram of the wet compartment in the dry-wet transition terminal joint of the deep-sea optical cable of the present invention.

[0039] Figure 6 It is a structural diagram of the multi-core optical fiber pressure-resistant penetration component in the deep-sea optical cable dry-wet transition terminal joint of the present invention.

[0040] Figure 1-6 Figure numerals: 1. Sealing module for deep-sea optical cable input end; 2. Dry tank; 3. Wet tank; 4. Multi-core optical fiber pressure-resistant tank penetration component; 5. Optical fiber output interface module; 6. Pipe clamp; 7. Dry tank fixed pressure plate; 8. Sealing structure; 9. Standard plug; 10. Dry tank fiber coil box fixing frame; 11. Dry tank fiber coil box; 12. Wet tank fiber coil box fixing frame; 13. Dry and wet tank partition; 14. Tank penetration component fixing plate; 15. Multi-core optical fiber tank penetration component; 16. Optical cable tail buffer sleeve; 17. Optical cable inner sheath seal; 18. Wet tank fiber coil box. DETAILED DESCRIPTION

[0041] Reference Figure 1-6 The embodiment of the deep-sea optical cable dry-wet transition terminal joint and the operation method thereof of the present invention is further described.

[0042] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0043] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0044] Figures 1 to 6 A deep-sea optical cable dry-wet transition terminal joint is shown, comprising:

[0045] The deep-sea optical cable input end sealing module 1 is used for sealing the deep-sea optical cable access to the dry cabin 2;

[0046] Dry tank 2, used to withstand external seawater pressure;

[0047] Wet tank 3, used for pressure equalization;

[0048] A multi-core optical fiber pressure-resistant cabin penetration component 4, used to connect the dry cabin 2 and the wet cabin 3;

[0049] The optical fiber output interface module 5 is located at the terminal of the wet cabin 3 and is used to mate with the wet-plug optical fiber connector assembly through the oil pipe;

[0050] Pipe clamp 6, used to fix the terminal as a whole and connect it to the equipment compartment installation panel;

[0051] Among them, the multi-core optical fiber pressure-resistant cabin penetration component 4 can meet the cabin penetration sealing requirements of no more than 16 optical fibers, can withstand the large pressure difference between the wet cabin 3 and the dry cabin 2, meet the requirements of deep-sea applications, and has the characteristics of miniaturization and high reliability.

[0052] A dry cabin fixed pressure plate 7 is provided at the connection between the deep-sea optical cable input end sealing module 1 and the dry cabin 2. Two sealing structures 8 are provided in the deep-sea optical cable input end sealing module 1 to block seawater from entering the terminal along the outer sheath or inner sheath of the optical cable. A leak detection port for checking the installation quality of the sealing structure 8 is provided on the outer shell of the deep-sea optical cable input end sealing module 1. A standard plug 9 is provided in the leak detection port to seal the leak detection port after leak detection. The deep-sea optical cable input end sealing module 1 is a structure for sealing the cable entering the cabin, and also includes a cable tail buffer sleeve 16 provided at the tail for buffering and sealing, and also includes a cable inner sheath seal 17 for further preventing seawater from penetrating into the terminal. This part can use different structural forms according to the different input umbilical cables.

[0053] Two O-rings are provided at both ends of the dry cabin 2 to seal with matching parts, and a leak detection port for checking the installation quality of the O-ring is provided on the outer shell of the dry cabin 2, and a standard plug 9 is provided in the leak detection port for closing the leak detection port after the leak detection is completed; a dry cabin fiber coil box fixing frame 10 is provided inside the dry cabin 2, and a dry cabin fiber coil box 11 is provided on the dry cabin fiber coil box fixing frame 10 for fusion splicing of the internal optical fiber of the deep-sea optical cable with the optical fiber led out of the multi-core optical fiber cabin penetration part 15 and providing sufficient space for coiling the excess optical fiber; the dry cabin 2 is a sealed, pressure-resistant cabin structure with air inside, and the optical fiber inside the optical cable and the optical fiber led out of the dry end of the multi-core optical fiber cabin penetration part 15 are fusion spliced ​​here.

[0054] The wet tank 3 is an oil-filled pressure balance tank, and the oil pipe led out from its terminal acts as a pressure compensator. It is filled with oil and connected to the wet tank 3 through the wet plug-in optical fiber connector assembly; the pressure in the wet tank 3 can be automatically adjusted according to the external environmental pressure, and a wet tank fiber coiling box fixing frame 12 is provided inside the wet tank 3. The wet tank fiber coiling box fixing frame 12 is provided with a wet tank fiber coiling box 18 for welding the optical fiber in the tail oil pipe and the optical fiber led out from the multi-core optical fiber chamber penetrating component 15 and providing sufficient space for winding the excess optical fiber; the optical fiber led out from the wet end of the multi-core optical fiber chamber penetrating component 15 and the optical fiber in the output oil pipe are welded here.

[0055] The multi-core optical fiber pressure-resistant cabin penetration component 4 includes a dry-wet cabin partition plate 13 that separates the dry cabin 2 and the wet cabin 3, and a multi-core optical fiber cabin penetration component 15 installed on the dry-wet cabin partition plate 13 and fixed by a cabin penetration component fixing plate 14; the multi-core optical fiber pressure-resistant cabin penetration component 4 withstands the axial pressure directed from the wet cabin 3 to the dry cabin 2, meets the pressure resistance and sealing requirements between the partition plate of the multi-core optical fiber pressure-resistant cabin penetration component 4, the optical fiber and the shell of the multi-core optical fiber pressure-resistant cabin penetration component 4, and realizes the connection between the input optical cable optical fiber and the oil pipe output optical fiber.

[0056] The optical fiber output interface module 5 adopts a standard interface that matches the oil pipe. The wet tank 3, optical fiber output interface module 5, oil pipe and wet plug optical fiber connector assembly constitute a pressure compensation unit to ensure normal operation in deep-sea conditions. The optical fiber output interface module 5 can be configured with up to 4 standard interfaces.

[0057] There are two sets of pipe clamps 6, which are used to support and fix the terminal as a whole, and install it on the equipment cabin installation panel, using upper and lower half structures to clamp and install by screw fastening.

[0058] All seals used for the structure in the present invention adopt O-rings, and the preferred indicators in the present invention are as follows: number of optical fiber cores: ≤16 cores; diameter of the umbilical cable: Φ7mm to Φ18mm; number of output oil pipes and wet-plug optical fiber connector components: ≤4; optical fiber insertion loss: ≤0.25dB (1310 / 1550 / 1625nm); working water depth: not less than 3000m; working temperature -10℃ to +50℃; design life: 25 years.

[0059] Compared with the prior art, the deep-sea optical cable dry-wet transition terminal joint of the present invention adopts advanced sealing technology and pressure compensation design, which significantly improves the stability of the optical cable in the deep-sea environment, can adapt to extreme pressure and temperature conditions, and ensures stable operation under deep-sea conditions; first, the double sealing structure 8 of the input end sealing module can effectively block the infiltration of seawater along the outer sheath or inner sheath of the optical cable, thereby ensuring the safety of the internal optical fiber. In addition, the design of the multi-core optical fiber pressure-resistant penetration component 4 between the dry cabin 2 and the wet cabin 3 not only realizes the effective separation of the dry and wet cabins, but also can withstand the axial pressure from the wet cabin 3, ensuring the stability and sealing of the connection. This technical advantage enables the terminal joint to have good pressure resistance and durability in the complex deep-sea environment, and can cope with the erosion of high pressure and corrosive seawater, greatly improving the service life and stability of the deep-sea optical cable.

[0060] The design of the deep-sea optical cable wet-dry transition terminal joint of the present invention fully considers the working performance in extreme deep-sea environments; the oil-filled pressure balance function of the wet chamber 3 can automatically adjust the pressure in the chamber according to the pressure changes of the external environment, avoiding structural damage and optical fiber performance degradation caused by drastic changes in external pressure. At the same time, the optical fiber output interface module 5 adopts a standardized interface design to ensure compatibility with wet-plug optical fiber connector components, making connection and maintenance work more efficient and convenient, ensuring the reliability of the connection and the stability of the signal. The realization of this series of performance optimization not only improves the overall operating efficiency of the deep-sea optical cable system, but also reduces maintenance costs and difficulties, providing more reliable technical support for deep-sea communications.

[0061] The present invention has significant advantages in durability and reliability, especially for the special requirements of the deep-sea environment; the sealing design of the dry compartment 2 and the wet compartment 3, combined with the use of O-rings, can effectively prevent the penetration of seawater and extend the service life of the equipment. In addition, all connecting parts are carefully designed and strictly leak-tested to ensure the sealing and pressure resistance of the system after installation. This design concept effectively reduces the probability of failure of the equipment due to environmental factors during long-term use and improves the reliability of the overall system. The durability of the deep-sea optical cable dry-wet transition terminal joint can not only adapt to long-term deep-sea operating environments, but also reduce the cost investment due to frequent maintenance.

[0062] The present invention also makes targeted designs in terms of maintenance convenience; first, the standardized design of each component of the system allows for quick replacement of damaged parts during maintenance, reducing downtime. In addition, the provision of the leak detection port allows the integrity of the sealing structure 8 to be checked at any time during use, thereby promptly discovering potential problems and avoiding serious consequences caused by minor problems. The upper and lower half structure design of the pipe clamp 6 also facilitates quick installation and disassembly, thereby improving the efficiency of maintenance work. By simplifying the maintenance process, the present invention not only reduces the workload of operators, but also improves the overall availability of the equipment, making the maintenance and management of deep-sea optical cables more efficient; it has a reasonable structure, is easy to manufacture, is easy to operate, avoids the defects of the prior art, can meet the needs of long-term, stable and reliable communications in the deep sea, and is suitable for promotion and implementation.

[0063] An operating method for a deep-sea optical cable dry-wet transition terminal joint, characterized in that it comprises the following steps:

[0064] S1. Structural preparation: Before installing the deep-sea optical cable dry-wet transition terminal joint, you first need to prepare the various components, including the deep-sea optical cable input end sealing module 1, dry cabin 2, wet cabin 3, multi-core optical fiber pressure-resistant cabin penetration parts 4, optical fiber output interface module 5 and pipe clamp 6. After ensuring that all components are intact, follow the steps below to install;

[0065] S2. Installation of the sealing module: Install the sealing module 1 at the input end of the deep-sea optical cable to the position of the dry compartment 2, and ensure that the two sealing structures 8 of the sealing module are evenly and tightly wrapped on the outer sheath and inner sheath of the optical cable. Then, use the leak detection port to check the installation quality of the sealing structure 8 to ensure that there is no leakage. After the leak detection is completed, use the standard plug 9 to seal the leak detection port;

[0066] S3. Installation of dry tank 2: Fix dry tank 2 on the equipment cabin, check whether the O-rings at both ends of dry tank 2 are correctly installed, and use the leak detection port to check the sealing. After confirmation, close the leak detection port;

[0067] S4. Installation of wet tank 3: Install the wet tank 3 on the other side of the dry tank 2, ensure that its oil filling function is normal, use the oil pipe to connect the wet plug fiber optic connector assembly, and ensure that the oil pipe is filled with oil smoothly. The pressure in the wet tank 3 should be able to automatically adjust according to the external environmental pressure and remain stable;

[0068] S5. Installation of the penetration component: Install the multi-core optical fiber pressure-resistant penetration component 4 between the dry compartment 2 and the wet compartment 3, ensure that it is stable and can withstand the axial pressure from the wet compartment 3, and check the sealing of the penetration component to ensure that there is no leakage;

[0069] S6. Connection of the optical fiber output interface module 5: Connect the optical fiber output interface module 5 to the terminal of the wet tank 3 to ensure that it matches the oil pipe well. The module should be able to connect smoothly with the wet pluggable optical fiber connector assembly through the oil pipe to ensure normal operation;

[0070] S7, optical fiber fusion: complete the optical fiber fusion operation to ensure that all optical fibers are connected correctly;

[0071] S8, installation of pipe clamp 6: Finally, use pipe clamp 6 to fix the terminal connector as a whole on the installation panel of the equipment cabin to ensure a stable installation. The upper and lower half structures are used and clamped by screw fastening;

[0072] S9. Final inspection: After completing the above steps, conduct a final inspection on the entire deep-sea optical cable wet-dry transition terminal joint to confirm the stability and sealing of all components, perform pressure testing and record the test results for inspection to ensure that it achieves the expected performance.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep-sea optical cable dry-wet transition terminal joint, characterized in that: include: A deep-sea optical cable input end sealing module (1) is used for sealing the location where the deep-sea optical cable is connected to a dry cabin (2); A dry tank (2) for withstanding external seawater pressure; A wet tank (3) for pressure equalization; A multi-core optical fiber pressure-resistant cabin penetration component (4) used to connect the dry cabin (2) and the wet cabin (3); An optical fiber output interface module (5) is located at the terminal of the wet cabin (3) and is used for connecting with a wet-plug optical fiber connector assembly through an oil pipe; A pipe clamp (6) is used to fix the terminal as a whole and connect it to the equipment compartment installation panel; A dry tank fixing pressure plate (7) is provided at the connection between the deep-sea optical cable input end sealing module (1) and the dry tank (2); two sealing structures (8) are provided in the deep-sea optical cable input end sealing module (1) for blocking seawater from entering the terminal along the outer sheath or inner sheath of the optical cable; a leak detection port for checking the installation quality of the sealing structure (8) is provided on the outer shell of the deep-sea optical cable input end sealing module (1); a standard plug (9) is provided in the leak detection port for sealing the leak detection port after leak detection is completed; Two O-rings are provided at both ends of the dry chamber (2) to seal with matching parts, and a leak detection port for checking the installation quality of the O-ring is provided on the outer shell of the dry chamber (2), and a standard plug (9) is provided in the leak detection port for closing the leak detection port after the leak detection is completed; A dry tank fiber coiling box fixing frame (10) is arranged inside the dry tank (2), and a dry tank fiber coiling box (11) is arranged on the dry tank fiber coiling box fixing frame (10) for fusing the optical fibers inside the deep-sea optical cable with the optical fibers led out of the multi-core optical fiber chamber penetration member (15) and providing sufficient space for coiling the excess optical fibers; The wet tank (3) is an oil-filled pressure balance tank, and the oil pipe leading out of the terminal thereof acts as a pressure compensator, and is filled with oil and connected to the wet tank (3) through a wet plug-in optical fiber connector assembly; The pressure in the wet tank (3) can be automatically adjusted according to the external environmental pressure. A wet tank fiber coiling box fixing frame (12) is arranged inside the wet tank (3). A wet tank fiber coiling box (18) is arranged on the wet tank fiber coiling box fixing frame (12) for fusing the optical fiber in the tail oil pipe with the optical fiber led out of the multi-core optical fiber cabin penetration member (15) and providing sufficient space for coiling the excess optical fiber. The multi-core optical fiber pressure-resistant cabin penetration component (4) comprises a dry-wet cabin partition plate (13) for separating a dry cabin (2) and a wet cabin (3), and a multi-core optical fiber cabin penetration component (15) installed on the dry-wet cabin partition plate (13) and fixed by a cabin penetration component fixing plate (14); the multi-core optical fiber pressure-resistant cabin penetration component (4) withstands the axial pressure directed from the wet cabin (3) to the dry cabin (2), and meets the pressure resistance and sealing requirements between the partition plate of the multi-core optical fiber pressure-resistant cabin penetration component (4), the optical fiber and the shell of the multi-core optical fiber pressure-resistant cabin penetration component (4); The optical fiber output interface module (5) adopts a standard interface that matches the oil pipe, and the wet cabin (3), the optical fiber output interface module (5), the oil pipe, and the wet plug optical fiber connector assembly constitute a pressure compensation unit to ensure normal operation in deep sea conditions; There are two groups of pipe clamps (6) for supporting and fixing the terminal as a whole, and installing it on the equipment cabin installation panel, using upper and lower half structures to clamp and install by means of screw fastening.

2. An operating method applicable to the deep-sea optical cable dry-wet transition terminal joint according to claim 1, characterized in that: The following steps are involved: S1. Structural preparation: Before installing the deep-sea optical cable dry-wet transition terminal joint, first prepare the various components, including the deep-sea optical cable input end sealing module (1), dry cabin (2), wet cabin (3), multi-core optical fiber pressure-resistant cabin penetration component (4), optical fiber output interface module (5) and pipe clamp (6). After ensuring that all components are intact, follow the steps below to install them; S2. Installation of the sealing module: Install the deep-sea optical cable input end sealing module (1) to the position of the dry compartment (2), ensuring that the two sealing structures (8) of the sealing module are evenly and tightly wrapped on the outer sheath and inner sheath of the optical cable. Then, use the leak detection port to check the installation quality of the sealing structure (8) to ensure that there is no leakage. After the leak detection is completed, use the standard plug (9) to seal the leak detection port; S3. Installation of the dry tank (2): fix the dry tank (2) on the equipment cabin, check whether the O-rings at both ends of the dry tank (2) are correctly installed, and use the leak detection port to check the sealing. After confirming that there is no problem, close the leak detection port; S4. Installation of the wet tank (3): Install the wet tank (3) on the other side of the dry tank (2), ensure that its oil filling function is normal, use an oil pipe to connect the wet pluggable optical fiber connector assembly, and ensure that the oil pipe is filled with oil smoothly. The pressure in the wet tank (3) should be able to automatically adjust according to the external environmental pressure and remain stable; S5. Installation of the penetration component: Install the multi-core optical fiber pressure-resistant penetration component (4) between the dry compartment (2) and the wet compartment (3), ensure that it is stable and can withstand the axial pressure from the wet compartment (3), and check the sealing of the penetration component to ensure that there is no leakage; S6. Connection of the optical fiber output interface module (5): Connect the optical fiber output interface module (5) to the terminal of the wet cabin (3) to ensure that it matches the oil pipe well. The module should be able to connect smoothly with the wet pluggable optical fiber connector assembly through the oil pipe to ensure normal operation; S7, optical fiber fusion: complete the optical fiber fusion operation to ensure that all optical fibers are connected correctly; S8. Installation of pipe clamp (6): Finally, use pipe clamp (6) to fix the terminal connector as a whole on the installation panel of the equipment cabin to ensure a stable installation. The upper and lower half structures are used and clamped by screw fastening; S9. Final inspection: After completing the above steps, conduct a final inspection on the entire deep-sea optical cable wet-dry transition terminal joint to confirm the stability and sealing of all components, perform pressure testing and record the test results for inspection to ensure that it achieves the expected performance.

Images