Submarine cable protection device

Abstract

The utility model belongs to the technical field of submarine cables, and provides a submarine cable protection device. The submarine cable protection device comprises an outer sheath, a protection unit and a flexible pipe. The outer sheath comprises a mounting part, the protection unit is inserted into the outer sheath on one side of the mounting part, and a positioning piece is arranged on the inner wall of the mounting part; the protection unit comprises a base and an anti-disengaging assembly, the anti-disengaging assembly extends out of the outer wall of the base, and the anti-disengaging assembly corresponds to the positioning piece to abut against the positioning piece so as to prevent the protection unit from disengaging from the installation part. The flexible pipe is connected with the base, and the flexible pipe is used for being arranged on the suspended section of the submarine cable in a sleeving mode. According to the submarine cable protection device provided by the invention, the protection effect of the submarine cable protection device on the submarine cable is relatively good, so that the service life of the submarine cable is relatively long.

Description

Technical Field

[0001] The present application relates to the field of submarine cable technology, and in particular to a submarine cable protection device. Background Art

[0002] Submarine cables are used to transmit electricity generated by offshore wind turbines.

[0003] The submarine cable needs to be protected by a protective structure. Specifically, the protective structure includes a casing, which is installed on the foundation pile of the wind turbine, and the submarine cable is inserted into the casing. The diameter of the casing is usually larger than the diameter of the submarine cable, so that the submarine cable can be inserted into the casing. In order to avoid collision and friction between the submarine cable and the casing, a positioning sleeve is set between the submarine cable and the casing. There is a certain distance between the casing and the seabed surface, and there is a suspended section between the submarine cable extending from the casing to the seabed surface. The protective structure also includes multiple protective nodes, and multiple protective nodes can be sleeved on the suspended section to prevent excessive bending of the suspended section in the submarine cable.

[0004] In the related art, the protective structure has a poor protective effect on the submarine cable, which shortens the service life of the submarine cable. Utility Model Content

[0005] The embodiment of the present application provides a submarine cable protection device, which has a good protective effect on the submarine cable, thereby extending the service life of the submarine cable.

[0006] An embodiment of the present application provides a submarine cable protection device, including an outer sheath, a protection unit and a flexible tube; the outer sheath includes a mounting portion, the protection unit is inserted into the outer sheath on one side of the mounting portion, and a positioning piece is provided on the inner wall of the mounting portion; the protection unit includes a base and an anti-slip assembly, the anti-slip assembly extends from the outer wall of the base, the anti-slip assembly is correspondingly arranged to abut against the positioning piece to prevent the protection unit from slipping out of the mounting portion; the flexible tube is connected to the base, and the flexible tube is used to be sleeved on the suspended section of the submarine cable.

[0007] In a possible implementation manner, in the submarine cable protection device provided in the embodiment of the present application, the anti-dropping assembly includes a latch, an elastic member and a rotating shaft, the latch includes a first end and a second end, and the first end is rotatably connected to the base via the rotating shaft;

[0008] The elastic member is connected between the second end and the outer wall of the base. When the elastic member is in a naturally extended state, the second end extends from the outer wall of the base to abut against the positioning member; when the elastic member is in a compressed state, the second end remains flush with the outer wall of the base.

[0009] In a possible implementation manner, the submarine cable protection device provided in the embodiment of the present application, the anti-drop assembly further includes a first limiting column and a second limiting column, the first limiting column is connected to the second end, the second limiting column is connected to the outer wall of the base, and the elastic member is partially sleeved on the first limiting column and partially sleeved on the second limiting column;

[0010] When the elastic member is in a compressed state, the first limiting column abuts against the second limiting column.

[0011] In a possible implementation, in the submarine cable protection device provided in the embodiment of the present application, the positioning member includes an abutment portion, the abutment portion is perpendicular to the axial direction, and the latching tooth abuts against the abutment portion.

[0012] In a possible implementation manner, in the submarine cable protection device provided in the embodiment of the present application, the positioning member further includes a limiting portion, the limiting portion is connected to the abutting portion, and the limiting portion is in a first cone shape;

[0013] The protection unit also includes a limit block, which is connected to the base and is used to abut against the limit portion.

[0014] In a possible implementation, in the submarine cable protection device provided in the embodiment of the present application, the protection unit further includes a guide cone, which is located at the end of the protection unit facing the outer sheath, and the guide cone facilitates the protection unit to be inserted into the outer sheath via the installation portion.

[0015] In a possible implementation, in the submarine cable protection device provided in an embodiment of the present application, the protection unit further includes a clamping member, the clamping member is disposed between the guide cone and the base, and the clamping member is used to clamp the outer surface of the submarine cable.

[0016] In a possible implementation, in the submarine cable protection device provided in an embodiment of the present application, the protection unit further includes a support ring, and the support ring abuts between the outer surface of the clamping member and the inner surface of the outer sheath.

[0017] In a possible implementation, the submarine cable protection device provided in the embodiment of the present application further includes an anode block, and the anode block is arranged on the outer wall of the protection unit.

[0018] In a possible implementation, the submarine cable protection device provided in the embodiment of the present application further includes a bend limiter, which is connected to the end of the flexible tube away from the protection unit, and is used to be sleeved on the supported section of the submarine cable.

[0019] The submarine cable protection device provided by the embodiment of the present application is provided with an outer sheath, a protection unit and a flexible tube; the outer sheath includes a mounting portion, the protection unit is inserted into the outer sheath on one side of the mounting portion, and a positioning piece is provided on the inner wall of the mounting portion; the protection unit includes a base and an anti-slip assembly; the anti-slip assembly extends from the outer wall of the base, the anti-slip assembly is arranged corresponding to the positioning piece to abut against the positioning piece, and the positioning piece can provide support for the base and other components in the protection unit connected to the base to offset the self-weight and external load of the protection unit to prevent the protection unit from falling out of the mounting portion, so that the protection unit can provide reliable protection for the submarine cable for a long time to extend the service life of the submarine cable. The flexible tube is connected to the base, and the flexible tube is used to be sleeved on the suspended section of the submarine cable. Since the flexible tube is a whole, the problem of adjacent protection sections being damaged or falling off the submarine cable due to mutual collision in the related art can be solved, and the suspended section of the submarine cable can be reliably protected to further extend the service life of the submarine cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a diagram of the use of a submarine cable protection structure in the related art;

[0022] Figure 2 A schematic diagram of the structure of the submarine cable protection device provided in the embodiment of the present application Figure 1 ;

[0023] Figure 3 The use status of the submarine cable protection device provided in the embodiment of the present application Figure 1 ;

[0024] Figure 4 A schematic diagram of the structure of a protection unit in a submarine cable protection device provided in an embodiment of the present application;

[0025] Figure 5 for Figure 3 The enlarged view of point A in the middle;

[0026] Figure 6 A schematic diagram of the structure of the connection between the positioning member and the mounting portion in the submarine cable protection device provided in an embodiment of the present application;

[0027] Figure 7 A schematic diagram of a structure in which a positioning member in a submarine cable protection device provided in an embodiment of the present application is removed from a mounting portion;

[0028] Figure 8 A schematic diagram of the structure of the submarine cable protection device provided in the embodiment of the present application Figure 2 ;

[0029] Fig. 9 The use status of the submarine cable protection device provided in the embodiment of the present application Figure 2 ;

[0030] Fig.10 Schematic diagram of the structure of the base and the anti-drop assembly in the submarine cable protection device provided in the embodiment of the present application Figure 1 ;

[0031] Fig.11 Schematic diagram of the structure of the base and the anti-drop assembly in the submarine cable protection device provided in the embodiment of the present application Figure 2 ;

[0032] Fig.12a Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 1 ;

[0033] Figure 12b Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 2 ;

[0034] Fig.12c Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 3 ;

[0035] Fig.12d Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 4 ;

[0036] Fig.12e Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 5 .

[0037] Description of reference numerals:

[0038] 10-submarine cable; 10a-suspended section; 10b-supported section; 20-operator; 30-protective structure; 31-casing; 32-positioning sleeve; 33-protective joint; 40-fixing device;

[0039] 100-Submarine cable protection device;

[0040] 110-outer sheath; 111-installation portion; 1111-positioning member; 1111a-abutment portion; 1111b-limiting portion;

[0041] 120-protection unit; 121-base; 1211-recessed portion; 122-anti-slip assembly; 1221-grip; 1221a-first end; 1221b-second end; 1222-elastic member; 1223-rotating shaft; 1224-first limiting column; 1225-second limiting column; 123-guide cone; 124-clamping member; 125-support ring; 126-limiting block;

[0042] 130-flexible tube; 140-fastener; 150-anode block; 160-bend limiter;

[0043] G1-seabed surface; G2-sea level;

[0044] L-axial; C-circumferential; R-radial; F-traction. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] The terms "first", "second", "third" (if any) in the specification and claims of this application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0049] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or service tool that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or service tool.

[0050] Submarine cables are used to transmit electricity generated by offshore wind turbines.

[0051] Specifically, Figure 1 This is a diagram of the use of a submarine cable protection structure in the related art.

[0052] See also Figure 1 As shown, the wind turbine pile (not marked in the figure) is installed on the seabed surface G1, and the lower end of the submarine cable 10 extends from the wind turbine pile. The upper end of the submarine cable 10 extends out of the sea level G2 and is fixed to the fixing device 40 by the operator 20. The submarine cable 10 needs to be protected by a protective structure 30.

[0053] The protective structure 30 includes a casing 31, which can be fixed on the foundation pile. The diameter of the casing 31 is usually larger than the diameter of the submarine cable 10, so that the submarine cable 10 can be inserted into the casing 31. The submarine cable 10 will swing under the action of the ocean current, thereby generating friction and collision with the casing 31. In order to avoid collision and friction between the submarine cable 10 and the casing 31, a positioning sleeve 32 is arranged between the submarine cable 10 and the casing 31.

[0054] The positioning sleeve 32 is clamped on the outer surface of the submarine cable 10. The positioning sleeve 32 offsets its own weight and external load by the friction generated by the clamping with the submarine cable 10. The outer surface of the submarine cable 10 is usually a protective layer made of elastic plastic. The positioning sleeve 32 is clamped on the outer surface of the submarine cable 10. The submarine cable 10 will creep and deform, which will reduce the friction between the positioning sleeve 32 and the submarine cable 10, and the positioning sleeve 32 will slip off the submarine cable 10. The submarine cable 10 will lose the protection of the positioning sleeve 32 and will rub and collide with the casing 31, thereby damaging the submarine cable 10 and shortening the service life of the submarine cable 10.

[0055] In addition, the end of the sleeve 31 can be generally "J" shaped or "I" shaped ( Figure 1 The "I" type is shown in the figure, wherein the "I" type casing 31 is perpendicular to the seabed surface G1, and the gravity of the positioning sleeve 32 is offset by the friction between the positioning sleeve 32 and the submarine cable 10, so that the positioning sleeve 32 needs to clamp the submarine cable 10 more tightly. However, after clamping more tightly, the submarine cable 10 is more likely to produce creep deformation, so that the positioning sleeve 32 will also slip off the submarine cable 10.

[0056] Please continue to see Figure 1As shown, there is a certain distance between the casing 31 and the seabed surface G1, and there is a suspended section 10a between the submarine cable 10 extending from the casing 31 to the seabed surface G1. The protective structure 30 also includes a plurality of protective joints 33, which can be sleeved on the suspended section 10a to prevent the suspended section 10a in the submarine cable 10 from being excessively bent due to the action of ocean currents. There are gaps between adjacent protective joints, and when affected by ocean currents, the connection points of adjacent protective joints 33 will collide with each other, causing the protective joints to be damaged or fall off the submarine cable 10, making it difficult to protect the suspended section 10a of the submarine cable 10, thereby shortening the service life of the submarine cable 10.

[0057] Based on this, the present application provides a submarine cable protection device, which has a good protective effect on the submarine cable, thereby extending the service life of the submarine cable.

[0058] Figure 2 A schematic diagram of the structure of the submarine cable protection device provided in the embodiment of the present application Figure 1 ; Figure 3 The use status of the submarine cable protection device provided in the embodiment of the present application Figure 1 ; Figure 4 A schematic diagram of the structure of a protection unit in a submarine cable protection device provided in an embodiment of the present application; Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0059] See also Figures 2 to 5 As shown, the submarine cable protection device 100 provided in the embodiment of the present application includes an outer sheath 110, a protection unit 120 and a flexible tube 130; the outer sheath 110 includes a mounting portion 111, the protection unit 120 is inserted into the outer sheath 110 on one side of the mounting portion 111, and a positioning piece 1111 is provided on the inner wall of the mounting portion 111; the protection unit 120 includes a base 121 and an anti-slip assembly 122; the anti-slip assembly 122 extends from the outer wall of the base 121, and the anti-slip assembly 122 is correspondingly arranged to abut against the positioning piece 1111 to prevent the protection unit 120 from slipping out of the mounting portion 111; the flexible tube 130 is connected to the base 121, and the flexible tube 130 is used to be sleeved on the suspended section 10a of the submarine cable 10.

[0060] Please continue to see Figure 2 As shown, the submarine cable protection device 100 is cylindrical as a whole, and includes an axial direction L, a circumferential direction C and a radial direction R.

[0061] The outer sheath 110 is used to connect with the foundation pile of the wind turbine, and the submarine cable 10 is located in the outer sheath 110. The outer sheath 110 has a mounting portion 111 at one end facing the seabed surface G1, and the mounting portion 111 is in a trumpet shape to facilitate the insertion of the submarine cable 10 from the mounting portion 111 into the outer sheath 110.

[0062] Figure 6 A schematic diagram of the structure of the connection between the positioning member and the mounting portion in the submarine cable protection device provided in an embodiment of the present application; Figure 7 A schematic diagram of the structure in which a positioning member in a submarine cable protection device provided in an embodiment of the present application is removed from a mounting portion.

[0063] See also Figures 5 to 7 As shown, a positioning member 1111 is disposed on the inner wall of the mounting portion 111, and the positioning member 1111 can be detachably connected to the mounting portion 111 through a fastener 140, or can be fixed to the mounting portion 111 by welding. The positioning member 1111 extends from the inner wall of the mounting portion 111 toward the axis.

[0064] Next, the structure of the protection unit 120 will be described.

[0065] Please continue to see Figure 4 As shown, the protection unit 120 further includes a guide cone 123 , which is located at the end of the protection unit 120 facing the outer sheath 110 . The guide cone 123 facilitates the protection unit 120 to be inserted into the outer sheath 110 via the mounting portion 111 .

[0066] The protection unit 120 further includes a clamping member 124 . The clamping member 124 is disposed between the guide cone 123 and the base 121 . The clamping member 124 is used to clamp the outer surface of the submarine cable 10 .

[0067] Specifically, the guide cone 123, the clamping member 124 and the base 121 are connected in sequence, and the guide cone 123, the clamping member 124 and the base 121 are all Haversian structures. Among them, the guide cone 123 can be connected to the clamping member 124 through a fastener, and the clamping member 124 can be connected to the base 121 through a fastener, and the clamping member 124 can also be integrally formed with the base 121. The clamping member 124 is interference-fitted with the outer surface of the submarine cable 10 to clamp the outer surface of the submarine cable 10, and the base 121 can clamp the outer surface of the submarine cable 10, or there can be a gap between the outer surface of the submarine cable 10 and the base 121.

[0068] The base materials of the clamp 124 and the base 121 are both metal materials, for example, the clamp 124 and the base 121 can be cast from carbon steel, so that the cost of the protection unit 120 is low. The guide cone 123 plays a guiding role, so the base material of the guide cone 123 can be metal or hard plastic.

[0069] Please continue to see Figure 4 and Figure 5 As shown, the protection unit 120 further includes a support ring 125 , which is abutted between the outer surface of the clamp 124 and the inner surface of the outer sheath 110 .

[0070] The base material of the support ring 125 can be elastic plastic. The support ring 125 is sleeved on the clamping member 124. The outer ring of the support ring 125 matches the inner diameter of the outer sheath 110 so that the clamping member 124 abuts between the outer surface of the clamping member 124 and the inner surface of the outer sheath 110. The clamping member 124 and the support ring 125 cooperate to avoid collision and friction between the submarine cable 10 and the outer sheath 110.

[0071] Please continue to see Figure 4 As shown, the submarine cable protection device 100 further includes an anode block 150 , and the anode block 150 is disposed on the outer wall of the protection unit 120 .

[0072] Since the anti-drop assembly 122 is disposed on the outer wall of the base 121 , the anode block 150 can be disposed on the outer wall of the clamp 124 . The anode block 150 can prevent the base 121 , the clamp 124 and other metal parts in the protection unit 120 from being corroded by seawater.

[0073] Please continue to see Figure 4 and Figure 5 As shown, the anti-slip assembly 122 is a protrusion extending from the outer wall of the base 121. There can be multiple anti-slip assemblies 122, and the multiple anti-slip assemblies 122 are arranged at intervals along the circumferential direction on the outer wall of the base 121. It should be noted that the multiple anti-slip assemblies 122 can be at the same height along the axial direction L, or at different heights along the axial direction L, as long as the anti-slip assemblies 122 are arranged one by one with the positioning members 1111. Figures 2 to 5 In the illustrated embodiment, four anti-slip assemblies 122 are spaced apart in the circumferential direction C and are at the same height in the axial direction L.

[0074] The positioning member 1111 abuts against the anti-slip assembly 122 to provide support for the anti-slip assembly 122, thereby providing support for the base 121 and other components (such as the guide cone 123, the clamping member 124 and the support ring 125) in the protection unit 120 connected to the base 121 to offset the self-weight and external load of the protection unit 120, so as to prevent the protection unit 120 from escaping from the installation portion 111. Compared with the related art, which needs to rely on the friction force generated by the clamping between the positioning sleeve and the submarine cable to offset the self-weight and external load of the positioning sleeve, the positioning member 1111 provides more reliable support for the protection unit 120, preventing the protection unit 120 from escaping from the installation portion 111, so that the protection unit 120 can provide reliable protection for the submarine cable 10 for a long time, so as to further extend the service life of the submarine cable 10.

[0075] Please continue to see Figures 2 to 5As shown, the flexible tube 130 is connected to one end of the base 121 away from the clamping member 124, and the flexible tube 130 is sleeved on the suspended section 10a of the submarine cable 10. The base material of the flexible tube 130 can be elastic plastic. The flexible tube 130 can protect the suspended section 10a of the submarine cable 10 when the suspended section 10a is bent due to swinging. Since the flexible tube 130 is a whole, the problem of adjacent protective sections being damaged or falling off from the submarine cable due to mutual collision in the related art can be solved, and the suspended section 10a of the submarine cable 10 can be reliably protected to extend the service life of the submarine cable 10.

[0076] Figure 8 A schematic diagram of the structure of the submarine cable protection device provided in the embodiment of the present application Figure 2 ; Fig. 9 The use status of the submarine cable protection device provided in the embodiment of the present application Figure 2 .

[0077] See also Figure 8 and Fig. 9 As shown, the submarine cable protection device 100 provided in the embodiment of the present application further includes a bending limiter 160 , which is connected to one end of the flexible tube 130 away from the protection unit 120 , and is used to be sleeved on the supported section 10 b of the submarine cable 10 .

[0078] The bending limiter 160 is composed of a plurality of protective sections 33 connected in sequence. The area where the submarine cable 10 contacts the seabed surface G1 is the supported section 10b. The seabed surface G1 can support the supported section 10b of the submarine cable 10. The swing amplitude of the supported section 10b decreases with the ocean current. Therefore, the bending limiter 160 can be mounted on the supported section 10b to protect the supported section 10b of the submarine cable 10.

[0079] The submarine cable protection device 100 provided in the embodiment of the present application is provided with an outer sheath 110, a protection unit 120 and a flexible tube 130; the outer sheath 110 includes a mounting portion 111, the protection unit 120 is inserted into the outer sheath 110 on one side of the mounting portion 111, and a positioning piece 1111 is provided on the inner wall of the mounting portion 111; the protection unit 120 includes a base 121 and an anti-slip assembly 122; the anti-slip assembly 122 extends from the outer wall of the base 121, and the anti-slip assembly 122 is correspondingly arranged to abut against the positioning piece 1111, and the positioning piece 1111 can provide support for the base 121 and other components of the protection unit 120 connected to the base 121 to offset the self-weight and external load of the protection unit 120 to prevent the protection unit 120 from falling out of the mounting portion 111, so that the protection unit 120 can provide reliable protection for the submarine cable 10 for a long time to extend the service life of the submarine cable 10. The flexible tube 130 is connected to the base 121. The flexible tube 130 is used to be sleeved on the suspended section 10a of the submarine cable 10. Since the flexible tube 130 is a whole, it can solve the problem in the related art that adjacent protective nodes are damaged or fall off from the submarine cable due to mutual collision. The suspended section 10a of the submarine cable 10 can be reliably protected to further extend the service life of the submarine cable 10.

[0080] Next, the specific structure of the anti-drop assembly 122 will be described.

[0081] Fig.10 Schematic diagram of the structure of the base and the anti-drop assembly in the submarine cable protection device provided in the embodiment of the present application Figure 1 ; Fig.11 Schematic diagram of the structure of the base and the anti-drop assembly in the submarine cable protection device provided in the embodiment of the present application Figure 2 Among them, Fig.10 and Fig.11 In order to clearly limit the structure of the anti-dropping component 122, only a part of the elastic member 1222 is shown.

[0082] See also Figure 5 , Fig.10 and Fig.11 As shown, the anti-slip assembly 122 includes a latch tooth 1221, an elastic member 1222 and a rotating shaft 1223. The latch tooth 1221 includes a first end 1221a and a second end 1221b. The first end 1221a is rotatably connected to the base 121 via the rotating shaft 1223; the elastic member 1222 is connected between the second end 1221b and the outer wall of the base 121. When the elastic member 1222 is in a naturally extended state, the second end 1221b extends from the outer wall of the base 121 to abut against the positioning member 1111; when the elastic member 1222 is in a compressed state, the second end 1221b remains flush with the outer wall of the base 121.

[0083] The first end 1221a of the latch 1221 faces the clamping member 124, and the second end 1221b faces away from the clamping member 124. A first mounting hole (not marked in the figure) is provided on the first end 1221a of the latch 1221, and a second mounting hole (not marked in the figure) is provided on the base 121. The rotating shaft 1223 is inserted into the first mounting hole and the second mounting hole to connect the latch 1221 and the base 121. The latch 1221 can rotate relative to the base 121 with the rotating shaft 1223 as the center of the circle.

[0084] The elastic member 1222 abuts between the second end 1221 b of the latching tooth 1221 and the outer wall of the base 121 . The elastic force of the elastic member 1222 can make the latching tooth 1221 extend out of the outer wall of the base 121 .

[0085] Next, the process of installing the submarine cable protection device 100 on the submarine cable 10 is described.

[0086] Fig.12a Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 1 ; Figure 12b Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 2 ; Fig.12c Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 3 ; Fig.12d Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 4 ; Fig.12e Schematic diagram of the process of installing the submarine cable protection device provided in the embodiment of the present application on the submarine cable Figure 5 .

[0087] See also Fig.12a As shown, the protection unit 120 is first installed on the submarine cable 10, and a traction force F is applied to the submarine cable 10 to pull the protection unit 120 and the submarine cable 10 into the outer sheath 110. The installation portion 111 is in a trumpet shape, and the guide cone 123 cooperates with the installation portion 111, which can facilitate the protection unit 120 to enter the outer sheath 110;

[0088] See also Figure 12b and Fig.12c As shown, the traction force F is continuously applied to the submarine cable 10, and the latch 1221 touches the positioning member 1111. The positioning member 1111 exerts radial pressure R on the latch 1221. As the submarine cable 10 and the protection unit 120 continue to rise, the latch 1221 rotates around the rotating shaft 1223, the elastic member 1222 is compressed, and the second end 1221b of the latch 1221 moves toward the surface of the base 121 until the second end 1221b of the latch 1221 is flush with the outer wall of the base 121.

[0089] See also Fig.12d As shown, the traction force F is continuously applied to the submarine cable 10, the latch 1221 smoothly passes through the positioning member 1111, and the second end 1221b of the latch extends out of the outer surface of the base 121 under the elastic force of the elastic member 1222;

[0090] See also Fig.12e As shown, the traction force F is stopped from being applied to the submarine cable 10 , and the protection unit 120 is lowered a short distance along with the submarine cable 10 , and the latching teeth 1221 in the protection unit 120 abut against the positioning member 1111 .

[0091] Thus, by allowing the latching teeth 1221 to rotate relative to the base 121 and by providing the elastic member 1222 , the installation of the protection unit 120 and the outer sheath 110 can be facilitated.

[0092] Please continue to see Fig. 9 As shown, after the submarine cable 10 and the protection unit 120 are installed in the outer sheath 110 under the action of the traction force F, the submarine cable 10 needs to be fixed on the fixing device 40. In the embodiment of the present application, since the positioning member 1111 can support the submarine cable 10 and the protection unit 120, during the operation of fixing the submarine cable 10 on the fixing device 40, there is no need for the traction device to continue to pull the submarine cable 10 and the protection unit 120 by the operator 20. While saving the energy consumption of the traction device, it can also prevent the traction device from accidentally injuring the operator due to falling.

[0093] Please continue to see Fig.10 and Fig.11 As shown, the anti-slip assembly 122 also includes a first limiting column 1224 and a second limiting column 1225. The first limiting column 1224 is connected to the second end 1221b, and the second limiting column 1225 is connected to the outer wall of the base 121. The elastic member 1222 is partially sleeved on the first limiting column 1224 and partially sleeved on the second limiting column 1225. When the elastic member 1222 is in a compressed state, the first limiting column 1224 abuts against the second limiting column 1225.

[0094] The base 121 has a recessed portion 1211 recessed from its outer wall. When the latching tooth 1221 is subjected to pressure from the positioning member 1111 in the radial direction R, the latching tooth 1221 enters the recessed portion 1211. The sum of the length of the first limiting column 1224, the length of the second limiting column 1225, and the thickness of the latching tooth 1221 can be roughly equal to the depth of the recessed portion 1211. Therefore, when the first limiting column 1224 abuts against the second limiting column 1225, the latching tooth 1221 is flush with the outer wall of the base 121. By providing the first limiting column 1224 and the second limiting column 1225, it is possible to prevent the latching tooth 1221 from being too deeply inserted into the recessed portion 1211 and causing the elastic member 1222 to be overly compressed.

[0095] Next, the structure of the positioning member 1111 will be described.

[0096] Please continue to see Figures 12a to 12e As shown, the positioning member 1111 includes an abutting portion 1111a, the abutting portion 1111a is perpendicular to the axial direction L, and the latching teeth 1221 abut against the abutting portion 1111a. By arranging the abutting portion 1111a to be perpendicular to the axial direction L, the protection unit 120 can be better supported.

[0097] Please continue to see Figures 12a to 12e As shown, the positioning member 1111 also includes a limiting portion 1111b, which is connected to the abutting portion 1111a and presents a first cone shape; the protective unit 120 also includes a limiting block 126, which is connected to the base 121 and is used to abut against the limiting portion 1111b.

[0098] The limiting block 126 can be snap-connected with the base 121 . The limiting block 126 and the guide cone 123 are located at two opposite ends of the base 121 . The diameter of the limiting block 126 is greater than the diameter of the base 121 .

[0099] When the protection unit 120 and the submarine cable 10 rise under the action of the traction force F to the point where the axial position of the latch 1221 is slightly higher than the abutment portion 1111a, the conical limiting portion 1111b can abut against the limiting block 126, thereby limiting the protection unit 120 and the submarine cable 10 from continuing to move upward and avoiding wasting additional traction force F.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A submarine cable protection device, characterized in that: It includes an outer sheath, a protection unit and a flexible tube; The outer sheath comprises a mounting portion, the protective unit is inserted into the outer sheath at one side of the mounting portion, and a positioning piece is provided on the inner wall of the mounting portion; the protective unit comprises a base and an anti-slip component, the anti-slip component extends from the outer wall of the base, and the anti-slip component is arranged corresponding to the positioning piece to abut against the positioning piece to prevent the protective unit from slipping out of the mounting portion; The flexible tube is connected to the base, and the flexible tube is used to be sleeved on the suspended section of the submarine cable.

2. The submarine cable protection device according to claim 1, characterized in that: The anti-drop assembly includes a latch, an elastic member and a rotating shaft, the latch includes a first end and a second end, and the first end is rotatably connected to the base via the rotating shaft; The elastic member is connected between the second end and the outer wall of the base. When the elastic member is in a naturally extended state, the second end extends from the outer wall of the base to abut against the positioning member; when the elastic member is in a compressed state, the second end remains flush with the outer wall of the base.

3. The submarine cable protection device according to claim 2, characterized in that: The anti-drop assembly further includes a first limiting column and a second limiting column, wherein the first limiting column is connected to the second end, the second limiting column is connected to the outer wall of the base, and the elastic member is partially sleeved on the first limiting column and partially sleeved on the second limiting column; When the elastic member is in a compressed state, the first limiting column abuts against the second limiting column.

4. The submarine cable protection device according to claim 3, characterized in that: The positioning member comprises an abutment portion, the abutment portion is perpendicular to the axial direction, and the latching tooth abuts against the abutment portion.

5. The submarine cable protection device according to claim 4, characterized in that: The positioning member further includes a limiting portion, the limiting portion is connected to the abutting portion, and the limiting portion is in a first cone shape; The protection unit further comprises a limit block, the limit block is connected to the base, and the limit block is used to abut against the limit portion.

6. The submarine cable protection device according to any one of claims 1 to 4, characterized in that: The protection unit further includes a guide cone, which is located at an end of the protection unit facing the outer sheath, and the guide cone facilitates the protection unit to be inserted into the outer sheath via the mounting portion.

7. The submarine cable protection device according to claim 6, characterized in that: The protection unit further comprises a clamping member, which is arranged between the guide cone and the base and is used for clamping the outer surface of the submarine cable.

8. The submarine cable protection device according to claim 7, characterized in that: The protection unit further includes a support ring abutting between an outer surface of the clamp and an inner surface of the outer sheath.

9. The submarine cable protection device according to any one of claims 1 to 4, characterized in that: The submarine cable protection device further comprises an anode block, and the anode block is arranged on the outer wall of the protection unit.

10. The submarine cable protection device according to any one of claims 1 to 4, characterized in that: The submarine cable protection device further comprises a bending limiter, which is connected to an end of the flexible tube away from the protection unit, and is used for being sleeved on the supported section of the submarine cable.

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