Submarine cable convenient to overhaul

Abstract

The invention discloses a submarine cable convenient to overhaul, and relates to the technical field of cables, the submarine cable comprises a cable body, a conductor is arranged in the cable body, underwater plugging mechanisms are arranged at the two ends of the cable body, each underwater plugging mechanism comprises a splicing type plugging ring, and the two ends of the outer side of the cable body are sleeved with the splicing type plugging rings. According to the invention, the structure is scientific and reasonable, the use is safe and convenient, the underwater plugging mechanism is arranged, through the cooperation of a wire clamping cylinder and a communication wire, a conductor can be conveniently and electrically connected with a conductive pin in a plugging clamping seat and a conductive insertion tube in a plugging head, convenience is provided for subsequent butt joint, and the use is convenient. The splicing type plugging ring and the waterproof connecting sleeve facilitate the installation and fixation of the plugging clamping seat and the plugging head, improve the sealing performance, and facilitate the connection of the two cable bodies through the cooperation of the internal thread sleeve and the external thread sleeve.

Description

Technical Field

[0001] This invention relates to the field of cable technology, specifically to a submarine cable that is easy to inspect and maintain. Background Technology

[0002] Submarine cables are communication and power transmission facilities that are wires or optical cables wrapped in insulating materials and laid on the seabed. They are divided into two categories: communication cables and power cables. Submarine optical cables are the main form of modern communication cables. For example, a submarine cable is disclosed in the present application, application number CN202110624104.X. This patent extends the service life of the cable to a certain extent by using a polyvinyl chloride soft layer and prevents water molecules from penetrating into the inner sheath and corroding the cable conductor by using a water-proof membrane. However, in practice, it is inconvenient to lay submarine cables by connecting and assembling multiple cable sections underwater, which affects the effectiveness of subsequent maintenance and replacement. Furthermore, it is not convenient to isolate the submarine cable from seawater during underwater assembly and disassembly, which can easily lead to leakage. Therefore, in order to avoid the above-mentioned technical problems, it is indeed necessary to provide a submarine cable that is easy to maintain in order to overcome the defects of the existing technology. Summary of the Invention

[0003] This invention provides a submarine cable that is easy to maintain, which can effectively solve the problems mentioned in the background art, such as the inconvenience of laying submarine cables by connecting and assembling multiple cable sections underwater, which affects the effectiveness of subsequent maintenance and replacement, and the difficulty of isolating seawater during underwater disassembly and assembly, which can easily lead to leakage.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a submarine cable that is easy to maintain, comprising a cable body, wherein a conductor is disposed inside the cable body, and underwater insertion mechanisms are disposed at both ends of the cable body, wherein the underwater insertion mechanism comprises splicing sealing rings; Both ends of the cable body are fitted with spliced ​​sealing rings, and waterproof connecting sleeves are fitted on the outside of the spliced ​​sealing rings. One end of the waterproof connector sleeve is snapped with a plug socket, the inner wall of the plug socket is snapped with a positioning partition, and conductive pins are snapped with the inside of the positioning partition at equal intervals, and waterproof sleeves are installed on the outer side and one end of the conductive pins. A waterproof plug is fitted onto the outside of the conductive pin, and a limit support spring is engaged between the waterproof plug and the positioning partition. The inner wall of the insertion card holder is fitted with a support bracket, one end of which is fitted with a telescopic limiting cylinder, and an anti-slip rod is connected inside the telescopic limiting cylinder. One end of the plug-in socket is connected to an internal threaded sleeve, and a drainage hole is provided on the outer side of the internal threaded sleeve.

[0005] According to the above technical solution, one end of the conductive pin passes through one end of the waterproof sliding plug, and there is a gap between the two waterproof sleeves on the conductive pin, and the outer diameter of the conductive pin at the gap is equal to the outer diameter of the waterproof sleeve.

[0006] According to the above technical solution, the outer side of the waterproof rubber sleeve is tightly fitted to the inner wall of the waterproof sliding plug, the outer side of the waterproof sliding plug is tightly fitted to the inner wall of the insertion card seat, a stop block is fixedly sleeved on the outer side of the anti-slip rod, and one end of the anti-slip rod is connected to one end of the waterproof sliding plug.

[0007] According to the above technical solution, another waterproof connecting sleeve has a plug-in inserted into its inner wall, and an external threaded sleeve is fixedly fitted onto the outer side of the plug-in. A sealing cover is snapped into the inner wall of the connector, a protective sleeve is snapped into one end of the sealing cover at equal intervals, an annular box is snapped into one end of the protective sleeve, and conductive tubes are snapped into the annular box at equal intervals inside. The inner wall of the conductive cannula is fitted with a positioning ring, and a hydraulic slide rod is movably connected inside the positioning ring. Both ends of the hydraulic slide rod are fitted with sliding plugs, and a return telescopic spring is fitted between each sliding plug and the positioning ring. Both the conductive tube and the conductive pin have a connecting wire attached to one end, and a wire clamp is attached to one end of the connecting wire.

[0008] According to the above technical solution, the outer diameter of the connector is smaller than the inner diameter of the connector socket, and a groove is provided at one end of the sealing cover corresponding to the side of the protective sleeve, and the inner diameter of the groove is equal to the inner diameter of the conductive tube.

[0009] According to the above technical solution, the outer side of the sliding plug is closely fitted with the inside of the conductive tube, the outer diameter of the sliding plug is equal to the outer diameter of the conductive pin, the installation position of the conductive tube corresponds to the installation position of the conductive pin, and the conductor is embedded in the inside of the clamping cylinder.

[0010] According to the above technical solution, a hydraulic filling mechanism is provided on the outer side of the two waterproof connecting sleeves, and the hydraulic filling mechanism includes an oil storage ring pipe; Both the outer side of the plug-in socket and the outer side of the plug-in connector are fixedly sleeved with oil storage ring tubes, and the inner wall of the oil storage ring tube is equidistantly clamped with connecting tubes. An adjusting push cylinder is threadedly connected to the outer side of the oil storage ring pipe, and a rotating ring is rotatably connected to the inner wall of the adjusting push cylinder. A traction push rod is equidistantly clamped to one end of the rotating ring, and a liquid push plate is clamped to one end of the traction push rod. One end of the sealing cover is clamped to a central oil supply pipe, and a cross bracket is clamped to the inner wall of the central oil supply pipe. An adjusting slide rod is movably connected inside the cross bracket, and a sealing cover is clamped to one end of the adjusting slide rod. A tension spring is clamped between the sealing cover and the cross bracket. The conductive tube has symmetrical oil filling grooves on the outside corresponding to the inside of the annular box. The protective sleeve and the conductive tube have flow guiding grooves at equal intervals. One end of the annular box has through holes at equal intervals.

[0011] According to the above technical solution, the oil storage ring pipe is filled with insulating oil, one of the connecting pipes is connected to the inside of the plug-in socket, and the other connecting pipe is connected to the inside of the ring box.

[0012] According to the above technical solution, the inner walls of the two rotating rings are respectively fitted to the outer side of the connector and the outer side of the connector seat, and a sealing rubber ring is sleeved at the connection between the adjusting slide rod and the oil storage ring pipe.

[0013] According to the above technical solution, a top block is snapped into the middle of one end of the waterproof sliding plug, and a groove is opened at one end of the central oil supply pipe. The diameter of the groove is smaller than the outer diameter of the sealing cap, the outer diameter of the top block is smaller than the diameter of the groove, and one end of the central oil supply pipe is connected to the inside of the annular box.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use. 1. An underwater plug-in mechanism is set up. Through the cooperation of the clamping cylinder and the connecting wire, the conductor can be electrically connected to the conductive pin inside the plug-in socket and the conductive tube inside the plug-in, which facilitates subsequent docking. The splicing sealing ring and waterproof connecting sleeve facilitate the installation and fixing of the plug-in socket and plug-in, improving the sealing performance. During the connection process, the inner and outer threaded sleeves work together to facilitate the connection of the plug-in sockets and connectors on the two cable bodies. During the connection, seawater between the plug-in sockets and connectors is drained through the drainage hole to reduce moisture and water vapor. As the connector moves, it pushes the waterproof sliding plug to slide, allowing the conductive pin to protrude. This facilitates the movement of the conductive pin, which pushes the sliding plug and hydraulic slide rod to release the limit and allow the conductive pin to embed into the conductor tube, forming a connection. This facilitates the transmission of electricity, improves the convenience of the connection process, and enables the laying of multiple cable sections. During disassembly, the waterproof plug is reset by the cooperation of the limiting support spring, the telescopic limiting cylinder, and the anti-slip rod, thereby sealing and storing the conductive pin inside the connector socket. At the same time, the waterproof sleeve and the waterproof plug ensure a tight seal, preventing seawater from contacting the conductive pin. Furthermore, the sliding plug and the sealing cover are reset by the cooperation of the reset telescopic spring and the tension spring, resealing the protective sleeve and the central oil supply pipe to prevent the insulating oil from flowing out. This protects the conductive tube from seawater contamination, extends its service life, and enables rapid disassembly and separation of the cable body, facilitating individual inspection and replacement, thus improving convenience.

[0015] 2. A hydraulic filling mechanism is installed. By rotating the adjusting push cylinder on the outside of the oil storage ring pipe, it is easy to move the rotating ring, traction rod and push plate to squeeze the insulating oil inside the oil storage ring pipe. Then, through the cooperation of the connecting pipe, the insulating oil inside the plug socket and the ring box is squeezed. At the same time, through the cooperation of the oil injection groove, guide groove and through hole, the insulating oil inside the ring box flows evenly into the plug socket, the central oil supply pipe, the protective sleeve and the conductive plug, which improves the hydraulic pressure and facilitates the support of the waterproof sliding plug, sliding plug and sealing cover, ensuring the sealing effect and preventing loosening and gaps. Furthermore, during the connection process, the sealing cover is slid by the top block to release the seal on the central oil supply pipe, allowing insulating oil to enter between the plug socket and the plug, filling the gaps and preventing moisture and water vapor residue, thus improving safety performance. In addition, when the conductive pin and conductive tube are connected, they are wrapped with insulating oil to improve the insulation effect.

[0016] In summary, the underwater splicing mechanism facilitates the connection and disassembly of submarine cables underwater, allowing for convenient splicing and laying of multiple cables together for long-distance power transmission. During maintenance, the cables can be separated for individual inspection and replacement. Furthermore, the hydraulic filling mechanism utilizes the continuous static pressure provided by insulating oil to fill the gaps in the connection, forming an oil film barrier that improves the conductor's waterproof and insulation performance, ensuring the cable's transmission efficiency. This enables rapid insertion and removal, reliable sealing, and long-term insulation of the cable in humid environments, while simplifying the cable maintenance process. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the waterproof connecting sleeve of the present invention; Figure 3 This is a schematic diagram of the installation structure of the support bracket of the present invention; Figure 4 This is a schematic diagram of the underwater insertion mechanism of the present invention; Figure 5 This is a schematic diagram of the installation structure of the connecting wire of the present invention; Figure 6 This is a schematic diagram of the hydraulic filling mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the guide channel of the present invention; Figure 8This is a schematic diagram of the cable plug-in structure of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the cable plug-in connector of the present invention.

[0019] Labels in the diagram: 1. Cable body; 2. Conductor; 3. Underwater insertion mechanism; 301. Interlocking sealing ring; 302. Waterproof connecting sleeve; 303. Insertion socket; 304. Positioning partition; 305. Conductive pin; 306. Waterproof rubber sleeve; 307. Waterproof sliding plug; 308. Limiting support spring; 309. Support bracket; 310. Telescopic limiting cylinder; 311. Anti-slip rod; 312. Internal threaded sleeve; 313. Drain hole; 314. Insertion connector; 315. External threaded sleeve; 316. Sealing cover plate; 317. Protective sleeve; 318. Ring box; 319. Conductive insertion tube; 320. Positioning ring; 321. Hydraulic slide rod; 322. Sliding plug; 323. Return telescopic spring; 324. Connecting wire; 325. Wire clamp cylinder; 4. Hydraulic filling mechanism; 401. Oil storage ring pipe; 402. Connecting pipe; 403. Adjusting push cylinder; 404. Traction push rod; 405. Push plate; 406. Central oil supply pipe; 407. Cross support; 408. Adjusting slide rod; 409. Sealing cover; 410. Tension spring; 411. Oil filling groove; 412. Guide groove; 413. Through hole; 414. Rotating ring. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figure 1-9 As shown, the present invention provides a technical solution, a submarine cable that is easy to maintain, including a cable body 1, a conductor 2 inside the cable body 1, and underwater plugging mechanisms 3 at both ends of the cable body 1. The underwater insertion mechanism 3 includes a spliced ​​sealing ring 301, a waterproof connecting sleeve 302, an insertion socket 303, a positioning partition 304, a conductive pin 305, a waterproof rubber sleeve 306, a waterproof sliding plug 307, a limiting support spring 308, a support bracket 309, a telescopic limiting cylinder 310, an anti-slip rod 311, an internal threaded sleeve 312, a drainage hole 313, an insertion connector 314, an external threaded sleeve 315, a sealing cover plate 316, a protective sleeve 317, an annular box 318, a conductive insertion tube 319, a positioning ring 320, a hydraulic slide rod 321, a sliding plug 322, a reset telescopic spring 323, a connecting wire 324, and a clamping cylinder 325. Both ends of the outer side of the cable body 1 are fitted with spliced ​​sealing rings 301, and waterproof connecting sleeves 302 are fitted on the outer side of the spliced ​​sealing rings 301. A waterproof connector sleeve 302 has a plug-in socket 303 at one end, a positioning partition 304 is plugged into the inner wall of the plug-in socket 303, and conductive pins 305 are equidistantly plugged into the inside of the positioning partition 304, and waterproof sleeves 306 are installed on the outer side and one end of the conductive pins 305. A waterproof plug 307 is sleeved on the outside of the conductive pin 305, and a limit support spring 308 is engaged between the waterproof plug 307 and the positioning partition 304. In order to facilitate the sliding of the waterproof plug 307, one end of the conductive pin 305 passes through one end of the waterproof plug 307. A gap is left between the two waterproof sleeves 306 on one conductive pin 305, and the outer diameter of the conductive pin 305 at the gap is equal to the outer diameter of the waterproof sleeve 306. A support bracket 309 is snapped into the inner wall of the insertion card holder 303. One end of the support bracket 309 is snapped into a telescopic limiting cylinder 310. An anti-slip rod 311 is connected inside the telescopic limiting cylinder 310. One end of the insertion card holder 303 is connected to an internal threaded sleeve 312. A drain hole 313 is provided on the outside of the internal threaded sleeve 312. In order to prevent water leakage, the outside of the waterproof rubber sleeve 306 is tightly fitted to the inner wall of the waterproof sliding plug 307. The outside of the waterproof sliding plug 307 is tightly fitted to the inner wall of the insertion card holder 303. A stop block is fixedly sleeved on the outside of the anti-slip rod 311. One end of the anti-slip rod 311 is connected to one end of the waterproof sliding plug 307. Another waterproof connector 302 has a plug 314 snapped into its inner wall, and an external threaded sleeve 315 is fixedly fitted onto the outer side of the plug 314. A sealing cover plate 316 is snapped into the inner wall of the plug 314. A protective sleeve 317 is snapped into one end of the sealing cover plate 316 at equal intervals. An annular box 318 is snapped into one end of the protective sleeve 317. Conductive inserts 319 are snapped into the annular box 318 at equal intervals. In order to ensure the sealing after connection, the outer diameter of the plug 314 is smaller than the inner diameter of the plug socket 303. A groove is opened at one end of the sealing cover plate 316 corresponding to the position of the protective sleeve 317, and the inner diameter of the groove is equal to the inner diameter of the conductive insert 319. A positioning ring 320 is snapped into the inner wall of the conductive cannula 319. A hydraulic slide rod 321 is movably connected inside the positioning ring 320. Both ends of the hydraulic slide rod 321 are snapped into sliding plugs 322. A reset telescopic spring 323 is snapped between a sliding plug 322 and the positioning ring 320. Both the conductive cannula 319 and the conductive pin 305 are connected to a connecting wire 324 at one end. The connecting wire 324 is connected to a wire clamping cylinder 325 at one end. In order to facilitate docking and energization, the outer side of the sliding plug 322 is tightly fitted with the inside of the conductive cannula 319. The outer diameter of the sliding plug 322 is equal to the outer diameter of the conductive pin 305. The installation position of the conductive cannula 319 corresponds to the installation position of the conductive pin 305. The conductor 2 is embedded in the wire clamping cylinder 325. The two waterproof connecting sleeves 302 are equipped with a hydraulic filling mechanism 4 on their outer sides; The hydraulic filling mechanism 4 includes an oil storage ring pipe 401, a connecting pipe 402, an adjusting push cylinder 403, a traction push rod 404, a liquid pushing plate 405, a central oil delivery pipe 406, a cross bracket 407, an adjusting slide rod 408, a sealing cover 409, a tension spring 410, an oil injection groove 411, a guide groove 412, and a through hole 413. An oil storage ring pipe 401 is fixedly sleeved on the outer side of the plug-in socket 303 and the outer side of the plug-in connector 314, and a connecting pipe 402 is equidistantly clamped on the inner wall of the oil storage ring pipe 401. An adjusting push cylinder 403 is threadedly connected to the outside of the oil storage ring pipe 401, and a rotating ring 414 is rotatably connected to the inner wall of the adjusting push cylinder 403. A traction push rod 404 is equidistantly clamped to one end of the rotating ring 414, and a liquid push plate 405 is clamped to one end of the traction push rod 404. For easy support, the inside of the oil storage ring pipe 401 is filled with insulating oil. One connecting pipe 402 is connected to the inside of the plug-in card seat 303, and the other connecting pipe 402 is connected to the inside of the annular box 318. One end of the sealing cover plate 316 is clamped to the central oil supply pipe 406, and the inner wall of the central oil supply pipe 406 is clamped to the cross bracket 407. The cross bracket 407 is movably connected to the adjusting slide rod 408, and one end of the adjusting slide rod 408 is clamped to the sealing cover 409. A tension spring 410 is clamped between the sealing cover 409 and the cross bracket 407. In order to adjust the hydraulic pressure, the inner walls of the two rotating rings 414 are respectively in contact with the outer side of the plug connector 314 and the outer side of the plug connector seat 303. A sealing rubber ring is sleeved at the connection between the adjusting slide rod 408 and the oil storage ring pipe 401. The conductive tube 319 has symmetrically arranged oil filling grooves 411 on the outside corresponding to the inside of the annular box 318. The protective sleeve 317 and the conductive tube 319 are equidistantly arranged with guide grooves 412. One end of the annular box 318 has equidistantly arranged through holes 413. In order to fill the cavity, a top block is snapped into the middle of one end of the waterproof sliding plug 307. One end of the central oil supply pipe 406 has a groove. The diameter of the groove is smaller than the outer diameter of the sealing cap 409. The outer diameter of the top block is smaller than the diameter of the groove. One end of the central oil supply pipe 406 is connected to the inside of the annular box 318.

[0022] The working principle and usage process of this invention are as follows: First, the splicing sealing ring 301 is fixed at both ends of the cable body 1, and the two ends of the cable body 1 are sealed to improve the sealing performance. Then, through the cooperation of the clamping cylinder 325 and the connecting wire 324, the conductor 2 inside the cable body 1 is electrically connected to the conductive pin 305 and the conductive tube 319 respectively. Furthermore, the waterproof connecting sleeve 302 is used to fix the plug-in card seat 303 and the plug-in connector 314 at both ends of the cable body 1, which further improves the sealing performance. Next, when connecting the two cable bodies 1, the plug-in socket 303 on one cable body 1 is aligned with the plug 314 on the other cable body 1. The plug 314 is pushed into the plug-in socket 303. At the same time, during the pushing process, the plug 314 and the plug-in socket 303 cooperate to push out the seawater in the gap through the drain hole 313, forcing a cavity to be formed between the plug 314 and the plug-in socket 303. When the sealing cover plate 316 inside the plug 314 is in contact with the waterproof sliding plug 307 inside the plug socket 303, the seawater between the plug 314 and the plug socket 303 is also discharged. Then, the adjusting push cylinder 403 on the outside of the two oil storage ring pipes 401 is rotated, which moves the rotating ring 414, the traction push rod 404 and the liquid push plate 405 inside the oil storage ring pipe 401, releasing the compression of the insulating oil, so that the waterproof sliding plug 307, the sliding plug 322 and the sealing cover 409 lose their support, making it easier to insert them later. Next, the inner threaded sleeve 312 is rotated and moved along the outer threaded sleeve 315, carrying the connector 314 to continue to be embedded inside the connector base 303, which improves the stability of the connection. At the same time, during docking, the conductive pin 305 and the conductive tube 319 are aligned. When the connector 314 moves, it is forced to push the waterproof sliding plug 307 to slide inside the connector base 303, which makes it easy to expose the conductive pin 305. The exposed conductive pin 305 is then inserted into the protective sleeve 317, which in turn pushes the sliding plug 322 and the hydraulic slide rod 321 to slide along the inner wall of the conductive tube 319. Thus, the conductive pin 305 passes through the sealing cover plate 316 and is embedded inside the conductive tube 319, forcing the outer side of the conductive pin 305 to fit tightly against the inner wall of the conductive tube 319, thus achieving an electrical connection. In addition, as the plug 314 pushes the waterproof slide plug 307 to move, the top block on the waterproof slide plug 307 pushes the sealing cover 409 and the adjusting slide rod 408 inside the central oil supply pipe 406 to slide along the cross bracket 407, thereby releasing the seal on the central oil supply pipe 406. This allows the insulating oil inside the annular box 318 to flow through the central oil supply pipe 406 into the gap between the plug socket 303 and the plug 314 for filling, preventing moisture and water vapor from remaining. Simultaneously rotating the adjusting push cylinder 403 on the outside of the two oil storage ring pipes 401 causes the push plate 405 to move, squeezing the insulating oil inside the oil storage ring pipe 401. With the cooperation of the connecting pipe 402, the hydraulic pressure inside the ring box 318 is increased. The cooperation of the oil injection groove 411, the guide groove 412 and the through hole 413 facilitates the even distribution of insulating oil inside the plug 314, improving the filling effect, preventing gaps, ensuring the filling effect, facilitating the wrapping of the conductive pin 305 and the conductive tube 319, improving the insulation effect, stabilizing the internal hydraulic pressure, realizing the docking of the two cables, and forming a multi-section spliced ​​submarine cable. When maintenance is required, rotate the inner threaded sleeve 312 to move along the outer threaded sleeve 315, disengaging the connection between the plug-in holder 303 and the plug 314. When disengaging, as the plug 314 moves, the waterproof sliding plug 307 loses its compression. Then, through the cooperation of the limiting support spring 308, the telescopic limiting cylinder 310 and the anti-slip rod 311, the waterproof sliding plug 307 slides back to its original position, re-accommodating the conductive pin 305 inside the plug-in holder 303. The waterproof rubber sleeve 306 is used to seal the gap, improving the sealing and waterproof performance. Simultaneously, the sliding plug 322 and the sealing cap 409 lose their compression. Then, through the cooperation of the reset telescopic spring 323 and the tension spring 410, the sliding plug 322 and the sealing cap 409 are pushed to move and reset, forcing the sliding plug 322 to seal the protective sleeve 317 and the sealing cap 409 to seal the central oil supply pipe 406. Thus, when the plug-in card holder 303 and the plug-in connector 314 separate, seawater is prevented from entering the interior of the plug-in card holder 303 and the plug-in connector 314, protecting the conductive pin 305 and the conductive tube 319 from seawater contamination. In addition, rotating the adjusting push cylinder 403 on the reset oil storage ring pipe 401 causes the pusher plate 405 to squeeze the insulating oil inside the oil storage ring pipe 401, increasing the hydraulic pressure inside the plug-in card holder 303 and the plug-in connector 314, thereby supporting the waterproof sliding plug 307, the sliding plug 322 and the sealing cap 409, preventing loosening and ensuring the sealing effect. Finally, once the cable body 1 is separated, it is easy to remove each section of cable for inspection and replacement. After the inspection is completed, the multiple sections of the cable body 1 can be spliced ​​together again using the same method to restore power transmission. Furthermore, because the connection method is simple, an underwater robot can be remotely controlled for assisted docking, which improves convenience.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A submarine cable that is easy to inspect and maintain, comprising a cable body (1), characterized in that: The cable body (1) is provided with a conductor (2) inside, and underwater plugging mechanism (3) is provided at both ends of the cable body (1). The underwater plugging mechanism (3) includes a splicing sealing ring (301). Both ends of the cable body (1) are fitted with spliced ​​sealing rings (301), and waterproof connecting sleeves (302) are fitted on the outside of the spliced ​​sealing rings (301). One end of the waterproof connecting sleeve (302) is snapped with a plug-in socket (303), the inner wall of the plug-in socket (303) is snapped with a positioning partition (304), the inside of the positioning partition (304) is snapped with conductive pins (305) at equal intervals, and the outer side and one end of the conductive pins (305) are both equipped with waterproof rubber sleeves (306). A waterproof plug (307) is sleeved on the outside of the conductive pin (305), and a limit support spring (308) is engaged between the waterproof plug (307) and the positioning partition (304). The inner wall of the plug-in card holder (303) is fitted with a support bracket (309), and one end of the support bracket (309) is fitted with a telescopic limiting cylinder (310). The telescopic limiting cylinder (310) is connected to an anti-slip rod (311). One end of the plug-in socket (303) is connected to an internal threaded sleeve (312), and a drain hole (313) is provided on the outside of the internal threaded sleeve (312).

2. The submarine cable for easy maintenance according to claim 1, characterized in that: One end of the conductive pin (305) passes through one end of the waterproof sliding plug (307). There is a gap between the two waterproof sleeves (306) on the conductive pin (305), and the outer diameter of the conductive pin (305) at the gap is equal to the outer diameter of the waterproof sleeve (306).

3. The submarine cable for easy maintenance according to claim 1, characterized in that: The outer side of the waterproof sleeve (306) is tightly fitted to the inner wall of the waterproof sliding plug (307), the outer side of the waterproof sliding plug (307) is tightly fitted to the inner wall of the insertion card seat (303), the outer side of the anti-slip rod (311) is fixedly fitted with a stop block, and one end of the anti-slip rod (311) is connected to one end of the waterproof sliding plug (307).

4. A submarine cable for easy maintenance according to claim 1, characterized in that: Another waterproof connecting sleeve (302) has a plug (314) snapped into its inner wall, and an external threaded sleeve (315) is fixedly sleeved on the outside of the plug (314). The inner wall of the connector (314) is fitted with a sealing cover plate (316), and a protective sleeve (317) is fitted at equal intervals at one end of the sealing cover plate (316). A ring box (318) is fitted at one end of the protective sleeve (317), and a conductive plug (319) is fitted at equal intervals inside the ring box (318). The inner wall of the conductive cannula (319) is fitted with a positioning ring (320), and a hydraulic slide rod (321) is movably connected inside the positioning ring (320). Both ends of the hydraulic slide rod (321) are fitted with sliding plugs (322), and a reset telescopic spring (323) is fitted between one of the sliding plugs (322) and the positioning ring (320). One end of the conductive cannula (319) and the conductive pin (305) is connected to a connecting wire (324), and one end of the connecting wire (324) is connected to a wire clamp (325).

5. A submarine cable for easy maintenance according to claim 4, characterized in that: The outer diameter of the connector (314) is smaller than the inner diameter of the connector socket (303). The sealing cover (316) has a groove at one end corresponding to the position of the protective sleeve (317), and the inner diameter of the groove is equal to the inner diameter of the conductive tube (319).

6. A submarine cable for easy maintenance according to claim 4, characterized in that: The outer side of the sliding plug (322) is closely fitted to the inside of the conductive tube (319). The outer diameter of the sliding plug (322) is equal to the outer diameter of the conductive pin (305). The installation position of the conductive tube (319) corresponds to the installation position of the conductive pin (305). The conductor (2) is embedded in the wire clamp (325).

7. A submarine cable for easy maintenance according to claim 4, characterized in that: A hydraulic filling mechanism (4) is provided on the outside of the two waterproof connecting sleeves (302), and the hydraulic filling mechanism (4) includes an oil storage ring pipe (401). The outer side of the plug-in socket (303) and the outer side of the plug-in connector (314) are both fixedly sleeved with oil storage ring pipes (401), and the inner wall of the oil storage ring pipe (401) is equidistantly clamped with connecting pipes (402). An adjusting push cylinder (403) is threadedly connected to the outside of the oil storage ring pipe (401), and a rotating ring (414) is rotatably connected to the inner wall of the adjusting push cylinder (403). A traction rod (404) is equidistantly clamped to one end of the rotating ring (414), and a liquid push plate (405) is clamped to one end of the traction rod (404). One end of the sealing cover plate (316) is clamped to a central oil supply pipe (406), and a cross bracket (407) is clamped to the inner wall of the central oil supply pipe (406). An adjusting slide rod (408) is movably connected inside the cross bracket (407), and a sealing cover (409) is clamped to one end of the adjusting slide rod (408). A tension spring (410) is clamped between the sealing cover (409) and the cross bracket (407). The conductive tube (319) is symmetrically provided with an oil filling groove (411) on the outside of the annular box (318) and a flow guide groove (412) is provided at equal intervals between the protective sleeve (317) and the conductive tube (319). The annular box (318) is provided with a through hole (413) at equal intervals at one end.

8. A submarine cable for easy maintenance according to claim 7, characterized in that: The oil storage ring pipe (401) is filled with insulating oil. One of the connecting pipes (402) is connected to the inside of the plug-in socket (303), and the other connecting pipe (402) is connected to the inside of the ring box (318).

9. A submarine cable for easy maintenance according to claim 7, characterized in that: The inner walls of the two rotating rings (414) are respectively attached to the outer side of the plug (314) and the outer side of the plug seat (303), and a sealing rubber ring is fitted at the connection between the adjusting slide rod (408) and the oil storage ring pipe (401).

10. A submarine cable for easy maintenance according to claim 7, characterized in that: A top block is snapped into the middle of one end of the waterproof sliding plug (307), and a groove is provided at one end of the central oil supply pipe (406). The diameter of the groove is smaller than the outer diameter of the sealing cap (409), and the outer diameter of the top block is smaller than the diameter of the groove. One end of the central oil supply pipe (406) is connected to the inside of the annular box (318).

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