Compact splitter suitable for connecting submarine cable and detection device

Abstract

The invention discloses a compact splitter suitable for connecting a submarine cable and a detection device. The compact splitter comprises two submarine cable end joint branches, a detection device joint branch and a splitter joint box. The two submarine cable end joint branches are mainly used for connecting submarine cables and splicing with the splitter joint box, and need to bear breaking force which is 90% of the breaking strength of the submarine cables. One detection device joint branch is mainly used for being connected with a detection device and spliced with a splitter joint box, and needs to bear breaking force which is 90% of the breaking strength of the detection device. The splitter connector box is mainly used for connecting a submarine cable end connector and a detection device connector and completing optical welding, fiber coiling and collecting and optical device storage.

Description

Technical Field

[0001] The present invention relates to the technical field of submarine optical cable equipment connection, and in particular to a compact splitter suitable for connecting a submarine cable with a detection device. Background Art

[0002] When laying detection systems on the seabed, multiple detection devices are often installed in different directions to expand the detection area and improve the economic efficiency of the detection system. Conventionally, multi-core submarine cables are used. Laying too many submarine cables to connect detection equipment not only reduces cable utilization but also hinders the overall planning of detection equipment layout. Using a splitter can effectively avoid these problems. Conventional splitters cannot simultaneously connect submarine cables to detection devices. Therefore, a new type of splitter is urgently needed that can simultaneously connect submarine cables to each other and directly connect detection devices to the main submarine cable. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In view of the shortcomings of the prior art, the present invention ensures that the detection device can be arranged in multiple directions while being directly connected to the main submarine cable.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a compact splitter suitable for connecting a submarine cable and a detection device, comprising:

[0007] It consists of two submarine cable end joint branches, a detection device joint branch and a branch joint box. The two submarine cable end joint branches are used to connect the submarine cable and splice with the branch joint box. The detection device joint branch is used to connect the detection device and splice with the branch joint box.

[0008] The branching junction box is used to connect the submarine cable end joint and the detection device joint, and complete optical fusion splicing, fiber coiling and optical device storage.

[0009] As a preferred solution, the submarine cable end joint branch is modularly designed, including a bending-resistant structure assembly and an integrated structure assembly.

[0010] As a preferred solution, the anti-bending structure assembly includes five metal anti-bending joints, a metal anti-bending joint adapter and a vulcanized anti-bending device. The metal anti-bending joint and the metal anti-bending joint adapter are two upper and lower parts locked by screws and can be disassembled at will. The main body of the vulcanized anti-bending device is a metal part.

[0011] As a preferred solution, the integrated structural assembly consists of a sealing connector, a fastening nut, a pressure-bearing shell, a heat-shrinkable sealing connector, a submarine cable joint, a round nut and a sealing support;

[0012] The heat shrinkable sealing connector is an adapter, and a fastening nut is installed on the top of the adapter for connecting the submarine cable joint. The inner side of the fastening nut is a smooth surface, and the outer side is a threaded surface, which can be used to install the submarine cable joint and lock the heat shrinkable sealing connector;

[0013] The pressure-bearing shell is installed on the heat-shrinkable sealing connector through threads, and there is a slot at the tail for installing the anti-bending structure assembly. A cavity is provided inside the pressure-bearing shell for bending the submarine cable wire, installing the heat-shrinkable sealing connector and the heat-shrinkable tube. The heat-shrinkable sealing connector is used for installing the seal, and there is a cavity inside it for installing the seal.

[0014] As a preferred solution, a cavity is provided inside the submarine cable joint for bending the submarine cable wire, injecting glue and installing a sealing support. The surface of the submarine cable joint is also provided with threads for installing a circular nut, which is a fastener for fastening and installing subsequent structural parts.

[0015] As a preferred solution, the sealing support comprises an insulating spacer, a force component cone, a steel pipe seal, a cable core steel pipe seal and a cable core fastener;

[0016] The insulating spacer is used to insulate and isolate metal parts and submarine cable wires to prevent static electricity from damaging components inside the splitter; the force distribution cone is a structural member with a bell-shaped mouth that can accommodate bent submarine cable wires; the steel pipe seal is a base that penetrates the submarine cable steel pipe and supports the insulating spacer, with a cavity in the middle to facilitate the installation of the cable core steel pipe seal; the cable core steel pipe seal penetrates the submarine cable steel pipe and is squeezed into the steel pipe seal using the cable core fastener;

[0017] The cable core fastener includes a threaded cover and a locking nut. The outer surface of the threaded cover is provided with threads so that it can be installed in the cavity of the cable core steel pipe seal. The outer surface of the locking nut is provided with threads that penetrate the steel pipe and are installed inside the threaded cover, while squeezing the cable core steel pipe seal.

[0018] As a preferred solution, the detection device joint branch includes a branch structure and a detection device anti-bending joint. The branch structure is provided with two interfaces, namely the detection device interface and the submarine cable interface. The detection device interface is provided with a connecting flange connected to the detection device by screws. The connecting flange is provided with threaded holes and is connected to the detection device by screw fastening. The detection device anti-bending joint is installed on the connecting flange through the detection device interface structural member, which can limit the bending condition of the detection device near the branch.

[0019] As a preferred solution, the branch junction box is composed of a submarine cable interface flange, a detection device interface flange, a waist-shaped sealing cylinder and a fiber plate;

[0020] A waist-shaped sealing cylinder is installed on the outside of the branch junction box and connected to the fiber tray. The waist-shaped sealing cylinder is a sealing structural component whose main function is to seal and withstand external environmental loads.

[0021] The fiber coil board is two metal structural parts that open and close up and are fixed by screws. Both ends have Havel structures for integrated connection, and there is a storage area inside for fiber coil welding.

[0022] (3) Beneficial effects

[0023] Compared with the prior art, the present invention provides a compact splitter suitable for connecting a submarine cable and a detection device, which has the following beneficial effects:

[0024] 1. The present invention improves the traditional splitter by integrating the detection device directly into the splitter, reducing the use of submarine cables and other connectors, improving the utilization rate of submarine cables and splitters, and increasing economic benefits to a certain extent;

[0025] Second, the present invention is assembled by assembling various structural components made of high-strength stainless steel materials, which can adapt to the integration of different types of submarine cables and detection devices, has a certain degree of modular integration function, and effectively improves the utilization rate of structural components;

[0026] 3. The present invention adopts a combination of mechanical and glue-filling sealing for internal sealing. Under this sealing method, the splitter can work for a long time in deep sea environment and has high working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the branching of the submarine cable end joint of the present invention;

[0029] Figure 3 Schematic diagram of the submarine cable bending-resistant structure assembly of the present invention;

[0030] Figure 4 This is a cross-sectional view of a structural assembly of a submarine cable according to the present invention;

[0031] Figure 5 Schematic diagram of a submarine cable structure assembly according to the present invention;

[0032] Figure 6 Schematic diagram of the cable core fastener of the present invention;

[0033] Figure 7This is a schematic diagram of the connector of the detection device of the present invention;

[0034] Figure 8 is a cross-sectional view of a joint of the detection device of the present invention;

[0035] Figure 9 Schematic diagram of the branch junction box of the present invention;

[0036] Figure 10 is a cross-sectional view of the branch junction box of the present invention;

[0037] Figure 11 It is a schematic diagram of the fiberboard of the present invention.

[0038] Figure: 1. Cable end joint branch; 2. Detection device joint branch; 3. Branch junction box; 4. Anti-bending structure assembly; 5. Integrated structure assembly; 6. Vulcanized anti-bending device; 7. Metal anti-bending joint adapter; 8. Metal anti-bending joint; 9. Sealing connector; 10. Fastening nut; 11. Pressure shell; 12. Heat shrinkable sealing connector; 13. Cable joint; 14. Round nut; 15. Insulation spacer; 16. Force distribution cone; 17. Steel pipe Seal; 18. Cable core steel pipe seal; 19. Cable core fastener; 20. Threaded gland; 21. Lock nut; 22. Branch structure; 23. Detection device interface; 24. Connecting flange; 25. Detection device interface structural part; 26. Detection device anti-bending joint; 27. Waist-shaped sealing cylinder; 28. Submarine cable interface flange; 29. ​​Detection device interface flange; 30. Fiberboard; 31. Haversian structure; 32. Threaded hole; 33. Storage area. DETAILED DESCRIPTION

[0039] In order to better understand the purpose, structure and function of the present invention, a compact splitter suitable for connecting a submarine cable and a detection device of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] refer to Figure 1-11 The present invention provides a compact splitter suitable for connecting a submarine cable and a detection device, comprising:

[0041] It consists of two submarine cable end joint branches 1, a detection device joint branch 2 and a branch junction box 3. The two submarine cable end joint branches 1 are used to connect the submarine cable and splice with the branch junction box 3. The detection device joint branch 2 is used to connect the detection device and splice with the branch junction box 3.

[0042] The branching box 3 is used to connect the submarine cable end connector and the detection device connector, and complete optical fusion splicing, fiber coiling and optical device storage.

[0043] The present invention improves the traditional splitter by directly integrating the detection device into the splitter, thereby reducing the use of submarine cables and other connectors, improving the utilization rate of submarine cables and splitters, and increasing economic benefits to a certain extent.

[0044] Specifically, the submarine cable joint branch 1 of the present invention is a complex structure composed of multiple parts. Based on their functional characteristics, the parts are mainly divided into two categories: a bending-resistant structural assembly 4 and an integrated structural assembly 5. Its advantage lies in its modular design, which allows for rapid part replacement. The bending-resistant structural assembly 4 includes five metal bending joints 8, a metal bending joint adapter 7, and a vulcanized bending device 6. The metal bending joints 8 and the metal bending joint adapter 7 are both upper and lower parts that are locked by screws and can be disassembled at will. The vulcanized bending device 6 is a metal part with vulcanization applied to the surface to compensate for the heavy weight of the metal bending joints.

[0045] More specifically, the integrated structural assembly 5 consists of a sealing connector 9, a fastening nut 10, a pressure-bearing shell 11, a heat-shrinkable sealing connector 12, a submarine cable joint 13, a circular nut 14, and a sealing support. All metal structural components are made of high-strength stainless steel. The joint has good structural stability and can effectively withstand high-intensity, high-frequency, and continuous loads. Among them, the heat-shrinkable sealing connector 12 is an adapter, and a fastening nut 10 is installed on its top for connecting to the submarine cable joint 13. The fastening nut 10 has a smooth inner surface and a threaded outer surface, which can be used to install the submarine cable joint 13 and lock the heat-shrinkable sealing connector 12. Its pressure-bearing shell 11 is threadedly mounted on the heat-shrinkable sealing connector 12, and a slot is provided at the rear end for installing the bending-resistant structural assembly 4. The pressure-bearing shell 11 has a cavity inside for bending the submarine cable wire, installing the heat-shrinkable sealing connector 12, and installing the heat-shrinkable tube. The heat-shrinkable sealing connector 12 is used for installing the seal, and the cavity inside it is used for installing the seal.

[0046] Specifically, the submarine cable joint 13 of the present invention has a cavity inside for bending the cable wires, injecting glue, and installing a sealing support. The surface of the submarine cable joint 13 also has threads for installing a circular nut 14, which serves as a fastener for subsequent structural fastening and installation. The sealing support includes an insulating spacer 15, a force-dividing cone 16, a steel pipe seal 17, a cable core steel pipe seal 18, and a cable core fastener 19.

[0047] The insulating spacer 15 is used to insulate and isolate metal parts and submarine cable wires to prevent static electricity from damaging components inside the splitter. The force divider 16 is a structural component with a flared mouth that can accommodate the bent submarine cable wires. The steel pipe seal 17 is a base that penetrates the submarine cable steel pipe and supports the insulating spacer 15. A cavity is provided in the middle to facilitate the installation of the cable core steel pipe seal 18. The cable core steel pipe seal 18 penetrates the submarine cable steel pipe and is squeezed into the steel pipe seal 17 using the cable core fastener 19.

[0048] The cable core fastener 19 includes a threaded cover 20 and a locking nut 21. The outer surface of the threaded cover 20 is provided with threads so that it can be installed in the cavity of the cable core steel pipe seal 18. The outer surface of the locking nut 21 is provided with threads that penetrate the steel pipe and is installed inside the threaded cover 20, while squeezing the cable core steel pipe seal 18.

[0049] The present invention assembles and combines structural parts made of various high-strength stainless steel materials, can adapt to the integration of different types of submarine cables and detection devices, has a certain degree of modular integration function, and effectively improves the utilization rate of structural parts.

[0050] Specifically, the detection device joint branch of the present invention includes a branch structure 22 and a detection device anti-bending joint 26. The branch structure is provided with two interfaces, namely the detection device interface 23 and the submarine cable interface. The detection device interface 23 is provided with a connecting flange 24 connected to the detection device by screws. The connecting flange 24 is provided with a threaded hole 32, which is connected to the detection device by screw fastening. The detection device anti-bending joint 26 is installed on the connecting flange 24 through the detection device interface structure 25, which can limit the bending condition of the detection device near the branch.

[0051] Furthermore, the branch junction box 3 of the present invention is composed of a submarine cable interface flange 28, a detection device interface flange 29, a waist-shaped sealing cylinder 27 and a fiber plate 30;

[0052] A waist-shaped sealing cylinder 27 is installed on the outside of the branch junction box 3 and connected to the fiber tray 30. The waist-shaped sealing cylinder 27 is a sealing structural component whose main function is to seal and withstand external environmental loads.

[0053] The fiber coil board 30 is two metal structural parts that open and close up and are fixed by screws. There are Haversian structures 31 at both ends for integrated connection, and there is a storage area 33 inside for fiber coil welding.

[0054] The two submarine cable end connector branches of the present invention are mainly used to connect the submarine cable and splice it with the branch junction box, and need to withstand a breaking force of 90% of the submarine cable's breaking strength. One detection device connector branch is mainly used to connect the detection device and splice it with the branch junction box, and needs to withstand a breaking force of 90% of the detection device's breaking strength. The branch junction box is mainly used to connect the submarine cable end connector and the detection device connector, and to complete optical fusion splicing, fiber coiling and optical device storage. The present invention also uses a combination of mechanical + glue injection for sealing. Under this sealing method, the branch can work for a long time in a deep sea environment and has high working stability.

[0055] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A compact splitter suitable for connecting a submarine cable to a detection device, characterized in that: include: The invention is composed of two submarine cable end joint branches (1), a detection device joint branch (2) and a branch junction box (3), wherein the two submarine cable end joint branches (1) are used to connect the submarine cable and are spliced ​​with the branch junction box (3), and the detection device joint branch (2) is used to connect the detection device and is spliced ​​with the branch junction box (3); The branching device junction box (3) is used to connect the submarine cable end joint and the detection device joint, and complete optical fusion splicing, fiber coiling and optical device storage.

2. A compact splitter suitable for connecting a submarine cable and a detection device according to claim 1, characterized in that: The submarine cable end joint branch (1) is modularly designed and comprises a bending-resistant structural assembly (4) and an integrated structural assembly (5).

3. A compact splitter suitable for connecting a submarine cable and a detection device according to claim 2, characterized in that: The anti-bending structure assembly (4) comprises five metal anti-bending joints (8), a metal anti-bending joint adapter (7) and a vulcanized anti-bending device (6). The metal anti-bending joints (8) and the metal anti-bending joint adapter (7) are upper and lower parts that are locked by screws and can be disassembled at will. The main body of the vulcanized anti-bending device (6) is a metal part.

4. A compact splitter suitable for connecting a submarine cable and a detection device according to claim 2, characterized in that The integrated structural assembly (5) is composed of a sealing connector (9), a fastening nut (10), a pressure shell (11), a heat shrinkable sealing connector (12), a submarine cable joint (13), a circular nut (14) and a sealing support; The heat shrinkable sealing connector (12) is an adapter, and a fastening nut (10) is installed on the top thereof for connecting to a submarine cable joint (13). The inner side of the fastening nut (10) is a smooth surface, and the outer side is a threaded surface, which can be used to install the submarine cable joint (13) and lock the heat shrinkable sealing connector (12); The pressure-bearing shell (11) is installed on the heat-shrinkable sealing connector (12) through threads, and a slot is provided at the tail for installing the anti-bending structure assembly (4). A cavity is provided inside the pressure-bearing shell (11) for bending the submarine cable wire, installing the heat-shrinkable sealing connector (12) and the heat-shrinkable tube. The heat-shrinkable sealing connector (12) is used for installing a seal, and a cavity is provided inside the heat-shrinkable sealing connector for installing the seal.

5. A compact splitter suitable for connecting a submarine cable and a detection device according to claim 4, characterized in that The submarine cable joint (13) is provided with a cavity inside for bending the submarine cable wire, injecting glue and installing the sealing support. The surface of the submarine cable joint (13) is also provided with a thread for installing a circular nut (14). The circular nut (14) is a fastener for fastening and installing subsequent structural parts.

6. A compact splitter suitable for connecting a submarine cable and a detection device according to claim 5, characterized in that The sealing support comprises an insulating spacer (15), a force cone (16), a steel pipe sealing member (17), a cable core steel pipe sealing member (18) and a cable core fastener (19); The insulating spacer (15) is used to insulate and isolate metal parts and submarine cable steel wires to prevent static electricity from damaging components inside the splitter; the force cone (16) is a structural member with a bell mouth that can accommodate the bent submarine cable steel wires; the steel pipe seal (17) is a base that penetrates the submarine cable steel pipe and supports each other with the insulating spacer (15), and a cavity is provided in the middle to facilitate the installation of the cable core steel pipe seal (18); the cable core steel pipe seal (18) penetrates the submarine cable steel pipe and is squeezed into the steel pipe seal (17) by the cable core fastener (19); The cable core fastener (19) comprises a threaded gland (20) and a locking nut (21). The outer surface of the threaded gland (20) is provided with threads so that it can be installed in the cavity of the cable core steel pipe seal (18). The outer surface of the locking nut (21) is provided with threads that penetrate into the steel pipe and is installed inside the threaded gland (20), while squeezing the cable core steel pipe seal (18).

7. A compact splitter suitable for connecting a submarine cable and a detection device according to claim 1, characterized in that The detection device joint branch includes a branch structure (22) and a detection device anti-bending joint (26). The branch structure is provided with two interfaces, namely the detection device interface (23) and the submarine cable interface. The detection device interface (23) is provided with a connecting flange (24) connected to the detection device by screws. The connecting flange (24) is provided with a threaded hole (32) and is connected to the detection device by screw fastening. The detection device anti-bending joint (26) is installed on the connecting flange (24) through the detection device interface structure (25), which can limit the bending condition of the detection device near the branch.

8. A compact splitter suitable for connecting a submarine cable and a detection device according to claim 1, characterized in that The branch junction box (3) is composed of a submarine cable interface flange (28), a detection device interface flange (29), a waist-shaped sealing cylinder (27) and a fiber plate (30); A waist-shaped sealing cylinder (27) is installed on the outside of the branch junction box (3) and is connected to the fiberboard (30). The waist-shaped sealing cylinder (27) is a sealing structural component, and its main function is to seal and bear external environmental loads. The fiber coil plate (30) is composed of two metal structural parts that open and close up and are fixed by screws. Both ends of the plate are provided with Haversian structures (31) for integrated connection. The interior of the plate has a storage area (33) for fiber coil welding.

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