Dynamic submarine cable anchoring device and method

Abstract

The embodiment of the invention provides a dynamic submarine cable anchoring device and method, and relates to the technical field of submarine cables. The dynamic submarine cable anchoring device comprises an anchoring base, a bending limiting device and a locking structure, the anchoring base is used for being arranged on a seabed, and the bending limiting device is used for being arranged on a dynamic submarine cable and used for being matched with the anchoring base on the seabed; the locking structure is used for locking and fixing the bending limiter and the anchoring base when the bending limiter is located on the seabed. The dynamic submarine cable anchoring device is simple in structure and operation, the dynamic submarine cable can be conveniently anchored on the seabed, the installation efficiency is improved, and the hoisting risk and the submarine cable damage risk are reduced.

Description

Technical Field

[0001] The present invention relates to the field of submarine cable technology, and in particular to a dynamic submarine cable anchoring device and method. Background Art

[0002] Dynamic cables installed on the seabed will be subjected to the effects of waves and floating body movements for a long time, and will produce repeated pulling, left and right dancing and other movements, which can easily cause fatigue failure of dynamic submarine cables. In order to reduce the risk of fatigue failure of dynamic submarine cables, it is usually necessary to install vertical limit anchors near the touchdown point of the dynamic submarine cable to limit the movement of the bottoming point of the dynamic cable, and at the same time install horizontal limit anchors on the seabed to locate the dynamic cable type. This method has many accessories, is expensive, and has low installation efficiency.

[0003] There are also devices that combine vertical limit anchoring with horizontal limit anchoring, but the existing anchoring devices have complex structures and need to be installed on shore before being lowered as a whole with the dynamic submarine cable. Since the weight of this anchoring is very large, this installation method will significantly increase the risk of lifting and the risk of damage to the submarine cable. Summary of the invention

[0004] The object of the present invention is to provide a dynamic submarine cable anchoring device and method, which can improve installation efficiency and reduce the risk of lifting and the risk of submarine cable damage.

[0005] The embodiment of the present invention is achieved as follows:

[0006] In a first aspect, the present invention provides a dynamic submarine cable anchoring device, comprising:

[0007] An anchoring base, the anchoring base is used to be arranged on the seabed;

[0008] A bend limiter, which is used to be arranged on the dynamic submarine cable and is used to cooperate with the anchoring base on the seabed; and

[0009] A locking structure is used to lock and fix the bend limiter to the anchoring base when the bend limiter is on the seabed.

[0010] In an optional embodiment, the bend limiter includes a first bend limiter, a flange and a second bend limiter, the first bend limiter, the flange and the second bend limiter are sequentially connected and arranged, and the first bend limiter, the flange and the second bend limiter are respectively provided with a first installation channel, a second installation channel and a third installation channel for the dynamic submarine cable to pass through, and the first installation channel, the second installation channel and the third installation channel are sequentially connected;

[0011] The locking structure is used to lock and fix the flange to the anchor base when the bend limiter is on the seabed.

[0012] In an optional embodiment, a first locking protrusion is provided on the flange, and a first threaded hole is formed in the first locking protrusion; a second locking protrusion is provided on the anchoring base, and a second threaded hole is formed in the second locking protrusion;

[0013] The locking structure has a threaded portion, and the threaded portion is used to cooperate with the first threaded hole and the second threaded hole.

[0014] In an optional embodiment, a positioning pin is further provided on the flange, and a positioning hole is opened on the anchor base, and the positioning hole cooperates with the positioning pin.

[0015] In an optional embodiment, a positioning protrusion is provided on the anchoring base, and the positioning hole is opened on the positioning protrusion.

[0016] In an optional embodiment, the flange is further provided with an annular slide groove, and the annular slide groove is coaxially arranged with the second installation channel;

[0017] The dynamic submarine cable anchoring device further comprises a slip ring, which is rotatably arranged in the annular sliding groove, and the first locking protrusion and the positioning pin are both arranged on the slip ring.

[0018] In an optional embodiment, the locking structure includes a locking rod and an operating handle, the locking rod is connected to the operating handle, and the locking rod has the threaded portion.

[0019] In an optional embodiment, the anchoring base includes an anchoring plate, a first penetration skirt plate and a second penetration skirt plate, two ends of the anchoring plate are respectively connected to the first penetration skirt plate and the second penetration skirt plate, the first penetration skirt plate and the second penetration skirt plate are spaced apart, and an avoidance channel is formed between the first penetration skirt plate and the anchoring plate;

[0020] The first penetration skirt plate and the second penetration skirt plate are used to be arranged on the seabed, and the locking structure is used to lock and fix the bend limiter to the anchor plate when the bend limiter is on the seabed.

[0021] In an optional embodiment, the anchoring plate is in the shape of an arc.

[0022] In an optional embodiment, the anchoring base further includes a first anti-sinking skirt plate and a second anti-sinking skirt plate, wherein the first anti-sinking skirt plate is arranged around the periphery of the first penetration skirt plate, and the second anti-sinking skirt plate is arranged around the periphery of the second penetration skirt plate.

[0023] In an optional embodiment, the first penetration skirt plate is provided with a first drainage cavity, and the second penetration skirt plate is provided with a second drainage cavity.

[0024] In an optional embodiment, the anchoring base further includes a first buffer plate and a second buffer plate, the first buffer plate is connected to the first penetration skirt plate and is located in the first drainage cavity, the first buffer plate is provided with a first drainage hole, and the first drainage hole is communicated with the first drainage cavity;

[0025] The second buffer plate is connected to the second penetration skirt plate and is located in the second drainage cavity. The second buffer plate is provided with a second drainage hole, and the second drainage hole is communicated with the second drainage cavity.

[0026] In a second aspect, the present invention provides a dynamic submarine cable anchoring method, which is implemented using the dynamic submarine cable anchoring device described in any one of the aforementioned embodiments, and the dynamic submarine cable anchoring method includes:

[0027] Placing the anchor base on the seabed;

[0028] The bend limiter is arranged on the dynamic submarine cable, and the dynamic submarine cable and the bend limiter are lowered to the seabed;

[0029] The bending limiter is locked and fixed to the anchoring base through the locking structure.

[0030] The beneficial effects of the embodiments of the present invention include:

[0031] The dynamic submarine cable anchoring device includes an anchoring base, a bend limiter, and a locking structure. The anchoring base is used to be set on the seabed, and the bend limiter is used to be set on the dynamic submarine cable and used to cooperate with the anchoring base on the seabed; the locking structure is used to lock and fix the bend limiter with the anchoring base when the bend limiter is on the seabed. When installing the dynamic submarine cable, first lower the anchoring base to the specified position on the seabed, then install the bend limiter on the dynamic submarine cable and lower it to the seabed as a whole, and finally use the locking structure to lock and fix the bend limiter with the anchoring base on the seabed. It is easy to understand that the anchoring base plays the role of fixing the entire anchoring device on the seabed. It itself is heavy, and the anchoring base is first lowered to the seabed, which will not affect the lowering of the dynamic submarine cable; the bend limiter itself is light, and when it is installed on the dynamic submarine cable and lowered on the seabed, it has little impact on the dynamic submarine cable, thereby reducing the risk of lifting and the risk of damage to the submarine cable; and, after the bend limiter is on the seabed, the bend limiter can be directly locked and fixed to the anchoring base through the locking structure, which is simple to operate, thereby improving the installation efficiency.

[0032] The dynamic submarine cable anchoring method is implemented by using a dynamic submarine cable anchoring device. The dynamic submarine cable anchoring method can also improve installation efficiency and reduce the risk of lifting and the risk of submarine cable damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of assembling a dynamic submarine cable anchoring device and a dynamic submarine cable on the seabed provided by an embodiment of the present invention;

[0035] Figure 2 A schematic structural diagram of a dynamic submarine cable anchoring device provided in an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the structure of a bend limiter provided in an embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the structure of a locking structure provided by an embodiment of the present invention;

[0038] Figure 5 An exploded view of a bend limiter provided in an embodiment of the present invention;

[0039] Figure 6 A schematic structural diagram of a first perspective of an anchor base provided by an embodiment of the present invention;

[0040] Figure 7 A schematic structural diagram of a second viewing angle of an anchor base provided by an embodiment of the present invention;

[0041] Figure 8 A flowchart of a dynamic submarine cable anchoring method provided in an embodiment of the present invention.

[0042] Icons: 100-dynamic submarine cable anchoring device; 10-anchoring base; 11-second locking protrusion; 111-second threaded hole; 12-positioning protrusion; 121-positioning hole; 13-anchoring plate; 14-first penetration skirt; 141-first drainage cavity; 15-second penetration skirt; 151-second drainage cavity; 16-first anti-sinking skirt; 17-second anti-sinking skirt; 18-first buffer plate; 181-first drainage hole; 19-second buffer plate; 191-second drainage hole; 20-bend limiter; 21-first bend limiter; 211-first installation channel; 22-flange; 221-second installation channel; 222-first locking protrusion; 2221-first threaded hole; 223-locating pin; 224-annular slide groove; 23-second bend limiter; 231-third installation channel; 30-locking structure; 31-locking rod; 311-threaded part; 32-operating handle; 40-slip ring; 50-avoidance channel; 200-dynamic submarine cable; 300-static submarine cable. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0046] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] As described in the background technology, dynamic cables will be subjected to the effects of waves and floating body movements for a long time, and will produce repeated pulling, left and right dancing and other movements, which can easily cause fatigue failure of dynamic submarine cables. In order to reduce the risk of fatigue failure of dynamic submarine cables, it is usually necessary to install anchoring devices near the touchdown point of the dynamic submarine cables. The existing anchoring devices use vertical limit anchoring and horizontal limit anchoring in combination, which has low installation efficiency, or combine the two, but need to be installed on the shore and then lowered as a whole with the dynamic submarine cable. This method will significantly increase the risk of lifting and the risk of damage to the submarine cable.

[0050] Based on this, please refer to Figure 1-Figure 8 The embodiment of the present invention provides a dynamic submarine cable anchoring device 100 and method, which can effectively improve the above-mentioned technical problems, that is, it can improve the installation efficiency and reduce the risk of lifting and damage to the submarine cable. The dynamic submarine cable anchoring device 100 and method will be described in detail below.

[0051] Please refer to Figure 1 and Figure 2 , Figure 1 The following is a schematic diagram of assembling the dynamic submarine cable anchoring device 100 and the dynamic submarine cable 200 on the seabed provided in this embodiment. Figure 2 The structural diagram of the dynamic submarine cable anchoring device 100 provided in this embodiment is combined with Figure 1 and Figure 2 The dynamic submarine cable anchoring device 100 includes an anchoring base 10, a bend limiter 20 and a locking structure 30. The anchoring base 10 is used to be set on the seabed, the bend limiter 20 is used to be set on the dynamic submarine cable 200, and is used to cooperate with the anchoring base 10 on the seabed; the locking structure 30 is used to lock and fix the bend limiter 20 to the anchoring base 10 when the bend limiter 20 is on the seabed.

[0052] When installing the dynamic submarine cable 200, first lower the anchor base 10 to the designated position of the seabed, then install the bend limiter 20 on the dynamic submarine cable 200 and lower it to the seabed as a whole, and finally use the locking structure 30 to lock and fix the bend limiter 20 and the anchor base 10 on the seabed. It is easy to understand that the anchor base 10 plays the role of fixing the anchoring device as a whole on the seabed, and it has a large weight, and the anchor base 10 is first lowered to the seabed, which will not affect the lowering of the dynamic submarine cable 200; and the bend limiter 20 itself is light in weight, and when it is installed on the dynamic submarine cable 200 and lowered to the seabed, it has little effect on the dynamic submarine cable 200, thereby reducing the risk of hoisting and the risk of damage to the submarine cable; and after the bend limiter 20 is on the seabed, the bend limiter 20 can be directly locked and fixed with the anchor base 10 by the locking structure 30, which is simple to operate, thereby improving the installation efficiency.

[0053] It should be noted that the locking structure 30 can be operated by an ROV (underwater robot) to lock and fix the bend limiter 20 and the anchor base 10 on the seabed, or it can be locked manually by a diver. It is understandable that when the seawater is deep, the locking structure 30 can be operated by an ROV; and when the seawater is shallow, the locking structure 30 can be operated by a diver.

[0054] In addition, it should be noted that when the dynamic submarine cable 200 is anchored and installed, the locking structure 30 can be installed on the bend limiter 20 in advance and lowered to the seabed together with the bend limiter 20 and the dynamic submarine cable 200. This can make it more convenient to lock and fix it with the anchor base 10 in the future, and further improve the installation efficiency. Of course, the locking structure 30 may not be installed on the bend limiter 20 in advance, but after the bend limiter 20 and the dynamic submarine cable 200 are lowered to the seabed, the locking structure 30 can be taken by ROV or divers, and the locking and fixing operation can be completed on the seabed.

[0055] Specifically, please refer to Figure 3-Figure 5 , Figure 3 This is a schematic diagram of the structure of the bend limiter 20 provided in this embodiment. Figure 4 The structural diagram of the locking structure 30 provided in this embodiment is as follows: Figure 5 The exploded view of the bending limiter 20 provided in this embodiment is combined with Figure 2-Figure 5The bend limiter 20 includes a first bend limiter 21, a flange 22 and a second bend limiter 23, which are connected in sequence, and the first bend limiter 21, the flange 22 and the second bend limiter 23 are respectively provided with a first installation channel 211, a second installation channel 221 and a third installation channel 231 for the dynamic submarine cable 200 to pass through, and the first installation channel 211, the second installation channel 221 and the third installation channel 231 are connected in sequence; wherein, the locking structure 30 is used to lock and fix the flange 22 to the anchor base 10 when the bend limiter 20 is on the seabed.

[0056] It is understandable that when anchoring on the seabed, the flange 22 is specifically locked and fixed to the anchor base 10. After the dynamic submarine cable 200 is anchored on the seabed, one part will be laid on the seabed, and the other part will be connected to the shore or the ship. By setting the first bend limiter 21 and the second bend limiter 23, the two parts of the dynamic submarine cable 200 can be respectively protected by bend limiting, thereby further reducing the risk of fatigue failure of the dynamic submarine cable 200.

[0057] In this embodiment, the first installation channel 211, the second installation channel 221 and the third installation channel 231 are coaxially arranged, so as to ensure that the portion of the dynamic submarine cable 200 passing through the bend limiter 20 is in a straight state, which further protects the dynamic submarine cable 200 and reduces the risk of fatigue failure thereof.

[0058] It should be noted that in order to facilitate the installation of the dynamic submarine cable 200 and the bend limiter 20, the first bend limiter 21, the flange 22 and the second bend limiter 23 can all be set as a two-half structure, that is, during installation, the two-half structure is directly buckled on the dynamic submarine cable 200, and then the two-half structure is connected and fixed by bolt connection or the like.

[0059] Specifically, please refer to Figure 6 , Figure 6 The first perspective structural diagram of the anchor base 10 provided in this embodiment, combined with Figure 3-Figure 6 The flange 22 is provided with a first locking protrusion 222, and the first locking protrusion 222 is provided with a first threaded hole 2221; the anchor base 10 is provided with a second locking protrusion 11, and the second locking protrusion 11 is provided with a second threaded hole 111; the locking structure 30 has a threaded portion 311, and the threaded portion 311 is used to cooperate with the first threaded hole 2221 and the second threaded hole 111. In other words, when locking and fixing, the threaded portion 311 is passed through the first threaded hole 2221 and the second threaded hole 111 at the same time, and the threaded connection is fixed.

[0060] It should be noted that, when locking and fixing, the first locking protrusion 222 needs to be moved toward the second locking protrusion 11 first, and then the first threaded hole 2221 and the second threaded hole 111 are matched, so that the threaded connection and fixing of the locking structure 30 can be facilitated. Therefore, in order to facilitate the positioning of the first locking protrusion 222 and the second locking protrusion 11, and to achieve the rapid matching of the first threaded hole 2221 and the second threaded hole 111, a positioning pin 223 is also provided on the flange 22, and a positioning hole 121 is provided on the anchor base 10, and the positioning hole 121 cooperates with the positioning pin 223. In other words, when the positioning pin 223 is inserted into the positioning hole 121, the first threaded hole 2221 and the second threaded hole 111 can be automatically aligned, thereby further improving the installation efficiency.

[0061] Please combine Figure 4 Specifically, the locking structure 30 includes a locking rod 31 and an operating handle 32. The locking rod 31 is connected to the operating handle 32, and the locking rod 31 has a threaded portion 311. That is, when locking and fixing, the ROV or diver can directly screw the operating handle 32, so that the threaded portion 311 on the locking rod 31 is threadedly connected and fixed with the first threaded hole 2221 and the second threaded hole 111. The setting of the operating handle 32 can further facilitate the operation of the ROV or diver and improve the installation efficiency.

[0062] Furthermore, in order to facilitate the installation of the positioning pin 223 , a positioning protrusion 12 is provided on the anchoring base 10 , and a positioning hole 121 is formed on the positioning protrusion 12 .

[0063] It should be noted that, through the insertion and cooperation between the positioning pin 223 and the positioning protrusion 12 , the locking stability between the bend limiter 20 and the anchor base 10 can be improved to a certain extent, thereby further reducing the risk of fatigue failure of the dynamic submarine cable 200 .

[0064] It should be noted that in this embodiment, the number of positioning pins 223 and positioning protrusions 12 is one. Of course, in order to further improve the locking stability of the bend limiter 20 and the anchor base 10, in other embodiments, the number of positioning pins 223 and positioning protrusions 12 can be set to multiple, and multiple positioning pins 223 correspond to multiple positioning protrusions 12 one by one.

[0065] During the process of lowering the dynamic submarine cable 200 and the bend limiter 20 to the seabed, and during the process of locking the bend limiter 20 and the anchor base 10, the dynamic submarine cable 200 may rotate, so that the positioning pin 223 is facing upward (toward the sea surface) or in an inclined state, and cannot be normally inserted into the positioning hole 121. In order to ensure that the positioning pin 223 can always be in a downward state (toward the seabed), combined with Figure 3 and Figure 5The flange 22 is also provided with an annular groove 224, which is coaxially arranged with the second installation channel 221; the dynamic submarine cable anchoring device 100 also includes a slip ring 40, which is rotatably arranged in the annular groove 224, and the first locking protrusion 222 and the positioning pin 223 are both arranged on the slip ring 40.

[0066] It is easy to understand that since the slip ring 40 is provided with a positioning pin 223 and a first locking protrusion 222, even if the positioning pin 223 and the first locking protrusion 222 are offset during the installation process, both will rotate relative to the flange 22 under the action of gravity, so that the positioning pin 223 and the first locking protrusion 222 are both in a downward state, which makes it convenient to cooperate with the positioning hole 121, further improving the installation efficiency.

[0067] Please combine Figure 2 and Figure 6 Specifically, the anchoring base 10 includes an anchoring plate 13, a first penetration skirt plate 14 and a second penetration skirt plate 15, both ends of the anchoring plate 13 are respectively connected to the first penetration skirt plate 14 and the second penetration skirt plate 15, the first penetration skirt plate 14 and the second penetration skirt plate 15 are arranged at intervals, and an avoidance channel 50 is formed between the anchoring plate 13; wherein the first penetration skirt plate 14 and the second penetration skirt plate 15 are used to be arranged on the seabed, and the locking structure 30 is used to lock and fix the bend limiter 20 to the anchoring plate 13 when the bend limiter 20 is on the seabed.

[0068] It is easy to understand that when the anchor base 10 is lowered to the seabed, the first penetration skirt 14 and the second penetration skirt 15 are embedded in the soil of the seabed to fix the entire anchor base 10. Figure 1 In the actual installation of submarine cables, other static submarine cables 300 may be laid on the seabed. Normally, additional protective devices are required to prevent direct contact between the two submarine cables to avoid wear and electrical interference between the submarine cables. The anchoring base 10 sets the first penetration skirt 14 and the second penetration skirt 15 at intervals, and forms an avoidance channel 50 between the anchoring plate 13. The avoidance channel 50 can easily avoid the static submarine cable 300. In the past, the submarine anchoring of cables needed to be set at a position far away from the cable crossing. The anchoring device designed in this application can directly cross over the existing cables.

[0069] Furthermore, in this embodiment, the shape of the anchoring plate 13 is an arc shape, such as Figure 6 As shown, the arc shape can also be understood as an arch bridge type. Through the setting of the arc shape, after the dynamic submarine cable 200 is anchored, the part of the dynamic submarine cable 200 outside the bend limiter 20 can better fit the anchor plate 13, preventing the dynamic submarine cable from being excessively bent, thereby further reducing the risk of fatigue failure of the submarine cable.

[0070] In order to prevent the first penetration skirt board 14 and the second penetration skirt board 15 from sinking too much and affecting the laying of the dynamic submarine cable 200, in this embodiment, the anchor base 10 further includes a first anti-sinking skirt board 16 and a second anti-sinking skirt board 17. The first anti-sinking skirt board 16 is arranged around the periphery of the first penetration skirt board 14, and the second anti-sinking skirt board 17 is arranged around the periphery of the second penetration skirt board 15. Through the arrangement of the first anti-sinking skirt board 16 and the second anti-sinking skirt board 17, during the sinking process of the first penetration skirt board 14 and the second penetration skirt board 15, they can be abutted against the seabed, thereby preventing them from sinking too much.

[0071] Due to the effect of seawater, the first penetration skirt 14 and the second penetration skirt 15 will encounter resistance from seawater when they sink to the seabed. Therefore, in order to better discharge the seawater and improve the installation stability and efficiency of the anchor base 10, please refer to Figure 7 , Figure 7 A schematic diagram of the structure of the anchor base 10 provided in the present embodiment from a second perspective, combined with Figure 6 and Figure 7 The first penetration skirt 14 is provided with a first drainage cavity 141, and the second penetration skirt 15 is provided with a second drainage cavity 151. That is, when the first penetration skirt 14 and the second penetration skirt 15 are sunk to the seabed, seawater can be discharged through the first drainage cavity 141 and the second drainage cavity 151.

[0072] It should be noted that the number of the first drainage chamber 141 and the second drainage chamber 151 can be set to multiple, so as to improve the efficiency of seawater discharge. For example, in the present embodiment, the number of the first drainage chamber 141 and the second drainage chamber 151 are both four. Of course, in other embodiments, the number of the first drainage chamber 141 and the second drainage chamber 151 can also be two, three or five, etc.

[0073] Furthermore, in order to prevent the seawater from being discharged too quickly and affecting the installation stability of the first penetration skirt 14 and the second penetration skirt 15 with the seabed, in this embodiment, the anchor base 10 further includes a first buffer plate 18 and a second buffer plate 19. The first buffer plate 18 is connected to the first penetration skirt 14 and is located in the first drainage cavity 141. The first buffer plate 18 has a first drainage hole 181, which is connected to the first drainage cavity 141. The second buffer plate 19 is connected to the second penetration skirt 15 and is located in the second drainage cavity 151. The second buffer plate 19 has a second drainage hole 191, which is connected to the second drainage cavity 151. The arrangement of the first buffer plate 18 and the second buffer plate 19 can also improve the overall structural strength of the anchor base 10 to a certain extent, thereby further improving the installation stability.

[0074] Similarly, the number of the first buffer plates 18 and the second buffer plates 19 can also be set to multiple, and the multiple first buffer plates 18 correspond to the multiple first drainage cavities 141 one by one, and the multiple second buffer plates 19 correspond to the multiple second drainage cavities 151 one by one. For example, in this embodiment, the number of the first buffer plates 18 and the second buffer plates 19 are both four. Of course, in other embodiments, the number of the first buffer plates 18 and the second buffer plates 19 can also be two, three, or five, etc.

[0075] In addition, the number of the first drainage holes 181 and the second drainage holes 191 may also be set to be multiple, and the specific number needs to be determined according to factors such as the design requirements of the anchoring device, the actual conditions of the seabed, and the depth of the seawater.

[0076] Please refer to Figure 8 , Figure 8 The flowchart of the dynamic submarine cable anchoring method provided in this embodiment is as follows. The dynamic submarine cable anchoring method is implemented by using a dynamic submarine cable anchoring device 100. Figure 8 , the dynamic submarine cable anchoring method comprises:

[0077] Step S10: placing the anchor base 10 on the seabed;

[0078] Step S20: installing the bend limiter 20 on the dynamic submarine cable 200, and lowering the dynamic submarine cable 200 and the bend limiter 20 to the seabed;

[0079] Step S30 : locking and fixing the bend limiter 20 and the anchoring base 10 by means of the locking structure 30 .

[0080] It should be noted that the locking structure 30 can be operated by an ROV or a diver: that is, when the seawater is deep, the locking structure 30 can be operated by an ROV; and when the seawater is shallow, the locking structure 30 can be operated by a diver. In addition, when the dynamic submarine cable 200 is anchored and installed, the locking structure 30 can be installed on the bend limiter 20 in advance, and lowered to the seabed together with the bend limiter 20 and the dynamic submarine cable 200, that is, in step 20, the locking structure 30 can also be installed on the bend limiter 20, which can make it more convenient to lock and fix with the anchor base 10 later, and further improve the installation efficiency; of course, the locking structure 30 can also not be installed on the bend limiter 20 in advance, that is, in step 30, after the bend limiter 20 and the dynamic submarine cable 200 are lowered to the seabed, the locking structure 30 is taken by an ROV or a diver, and the operation of locking and fixing the bend limiter 20 and the anchor base 10 is completed on the seabed. The dynamic submarine cable anchoring method can also improve installation efficiency and reduce the risk of lifting and damage to the submarine cable.

[0081] In summary, the embodiment of the present invention provides a dynamic submarine cable anchoring device 100 and method, the dynamic submarine cable anchoring device 100 comprises an anchoring base 10, a bend limiter 20 and a locking structure 30, the anchoring base 10 is used to be arranged on the seabed, the bend limiter 20 is used to be arranged on the dynamic submarine cable 200, and is used to cooperate with the anchoring base 10 on the seabed; the locking structure 30 is used to lock and fix the bend limiter 20 with the anchoring base 10 when the bend limiter 20 is on the seabed. When installing the dynamic submarine cable 200, first lower the anchoring base 10 to the designated position of the seabed, then install the bend limiter 20 on the dynamic submarine cable 200 and lower it to the seabed as a whole, and finally use the locking structure 30 to lock and fix the bend limiter 20 with the anchoring base 10 on the seabed. It is easy to understand that the anchoring base 10 serves to fix the entire anchoring device on the seabed. It has a large weight, and the anchoring base 10 is first lowered to the seabed, which will not affect the lowering of the dynamic submarine cable 200. The bend limiter 20 itself is light in weight. When it is installed on the dynamic submarine cable 200 and lowered on the seabed, it has little impact on the dynamic submarine cable 200, thereby reducing the risk of lifting and the risk of damage to the submarine cable. Moreover, after the bend limiter 20 is on the seabed, the bend limiter 20 can be directly locked and fixed to the anchoring base 10 through the locking structure 30, which is simple to operate, thereby improving the installation efficiency.

[0082] The dynamic submarine cable anchoring method is implemented by using the dynamic submarine cable anchoring device 100. The dynamic submarine cable anchoring method can also improve the installation efficiency and reduce the risk of lifting and the risk of submarine cable damage.

[0083] The above description is only a specific embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dynamic submarine cable anchoring device, characterized in that: include: An anchoring base (10), the anchoring base (10) being used to be arranged on the seabed; A bend limiter (20), the bend limiter (20) is used to be arranged on the dynamic submarine cable (200) and is used to cooperate with the anchor base (10) on the seabed; and A locking structure (30) is used to lock and fix the bend limiter (20) and the anchoring base (10) when the bend limiter (20) is located on the seabed.

2. The dynamic submarine cable anchoring device according to claim 1, characterized in that: The bend limiter (20) comprises a first bend limiter (21), a flange (22) and a second bend limiter (23); the first bend limiter (21), the flange (22) and the second bend limiter (23) are sequentially connected and arranged, and the first bend limiter (21), the flange (22) and the second bend limiter (23) are respectively provided with a first installation channel (211), a second installation channel (221) and a third installation channel (231) for the dynamic submarine cable (200) to pass through; the first installation channel (211), the second installation channel (221) and the third installation channel (231) are sequentially connected; The locking structure (30) is used to lock and fix the flange (22) and the anchor base (10) when the bend limiter (20) is located on the seabed.

3. The dynamic submarine cable anchoring device according to claim 2, characterized in that: The flange (22) is provided with a first locking protrusion (222), and the first locking protrusion (222) is provided with a first threaded hole (2221); the anchor base (10) is provided with a second locking protrusion (11), and the second locking protrusion (11) is provided with a second threaded hole (111); The locking structure (30) has a threaded portion (311), and the threaded portion (311) is used to cooperate with the first threaded hole (2221) and the second threaded hole (111).

4. The dynamic submarine cable anchoring device according to claim 3, characterized in that: The flange (22) is also provided with a positioning pin (223), and the anchor base (10) is provided with a positioning hole (121), and the positioning hole (121) cooperates with the positioning pin (223).

5. The dynamic submarine cable anchoring device according to claim 4, characterized in that: The flange (22) is further provided with an annular sliding groove (224), and the annular sliding groove (224) is coaxially arranged with the second installation channel (221); The dynamic submarine cable anchoring device (100) further comprises a slip ring (40), wherein the slip ring (40) is rotatably arranged in the annular sliding groove (224), and the first locking protrusion (222) and the positioning pin (223) are both arranged on the slip ring (40).

6. The dynamic submarine cable anchoring device according to claim 3, characterized in that: The locking structure (30) comprises a locking rod (31) and an operating handle (32); the locking rod (31) is connected to the operating handle (32), and the locking rod (31) has the threaded portion (311).

7. The dynamic submarine cable anchoring device according to claim 1, characterized in that: The anchoring base (10) comprises an anchoring plate (13), a first penetration skirt plate (14) and a second penetration skirt plate (15); two ends of the anchoring plate (13) are respectively connected to the first penetration skirt plate (14) and the second penetration skirt plate (15); the first penetration skirt plate (14) and the second penetration skirt plate (15) are arranged at intervals, and an avoidance channel (50) is formed between the first penetration skirt plate (14) and the anchoring plate (13); The first penetration skirt (14) and the second penetration skirt (15) are used to be arranged on the seabed, and the locking structure (30) is used to lock and fix the bend limiter (20) to the anchor plate (13) when the bend limiter (20) is located on the seabed.

8. The dynamic submarine cable anchoring device according to claim 7, characterized in that: The anchoring plate (13) is in the shape of an arc.

9. The dynamic submarine cable anchoring device according to claim 7, characterized in that: The anchoring base (10) further comprises a first anti-sinking skirt plate (16) and a second anti-sinking skirt plate (17), wherein the first anti-sinking skirt plate (16) is arranged around the periphery of the first penetration skirt plate (14), and the second anti-sinking skirt plate (17) is arranged around the periphery of the second penetration skirt plate (15).

10. A dynamic submarine cable anchoring method, characterized in that: The dynamic submarine cable anchoring device (100) according to any one of claims 1 to 9 is used to implement the dynamic submarine cable anchoring method, comprising: The anchoring base (10) is arranged on the seabed; The bend limiter (20) is arranged on the dynamic submarine cable (200), and the dynamic submarine cable (200) and the bend limiter (20) are lowered to the seabed; The bend limiter (20) and the anchoring base (10) are locked and fixed by means of the locking structure (30).

Images