Submarine cable rear protection device

Abstract

The utility model relates to the technical field of submarine cables, in particular to a submarine cable rear protection device which comprises a plurality of protection sleeves. The protective sleeve comprises a first connecting part and a second connecting part, the first end of the first connecting part is hinged to the first end of the second connecting part, a connecting structure is arranged between the first connecting part and the second connecting part, and the second end of the first connecting part is connected with the second end of the second connecting part through the connecting structure. A clamping structure is arranged between every two adjacent protective sleeves, and the adjacent protective sleeves are connected in a clamping mode through the clamping structures. The submarine cable rear protection device provided by the utility model is used for solving the defects that the existing rear protection device is relatively high in installation difficulty and the submarine cable is easy to damage in the installation process, the installation process of the rear protection device is simplified, and the damage risk of the submarine cable in the installation process can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of submarine cables, in particular to a submarine cable rear protection device. Background Art

[0002] With the development of my country's offshore wind power industry, the use of center clamps and bend limiters to protect submarine cables at offshore wind turbines is increasing. However, as the service life of offshore wind turbines increases, some center clamps may be at risk of slipping, and bend limiters may also be at risk of breakage due to long-term stress. Once these protective devices have problems, the risk of damage to the submarine cable will increase. Therefore, it is very important to conduct regular inspections of wind turbines that have been in operation for a long time, and for center clamps and bend limiters with problems, they need to be protected in time through post-protection devices.

[0003] The existing rear protection device requires the damaged center clamp or bend limiter on the submarine cable to be removed before the rear protection device can be installed. The removal process will cause more or less damage to the submarine cable, increasing the risk. In addition, if there is no margin left on the submarine cable and it cannot be pulled up and down, it is impossible to simply install the rear protection device on the submarine cable. The rear protection can only be performed after the entire submarine cable is pulled out. It can be seen that the installation of the existing rear protection device is difficult and it is easy to damage the submarine cable during the installation process.

[0004] Therefore, there is an urgent need for a submarine cable rear protection device to solve the above problems. Utility Model Content

[0005] The utility model provides a submarine cable rear protection device to solve the defects of the existing rear protection device that the installation is difficult and the submarine cable is easily damaged during the installation process, simplifies the installation process of the rear protection device, and can reduce the risk of submarine cable damage during the installation process.

[0006] The utility model provides a submarine cable rear protection device, comprising a plurality of protection sleeves;

[0007] The protective cover comprises a first connecting portion and a second connecting portion, wherein the first ends of the first connecting portion and the second connecting portion are hinged, a connecting structure is provided between the first connecting portion and the second connecting portion, and the second ends of the first connecting portion and the second connecting portion are connected via the connecting structure;

[0008] A clamping structure is provided between adjacent protective covers, and adjacent protective covers are clamped and connected via the clamping structure.

[0009] According to the submarine cable rear protection device provided by the utility model, the clamping structure includes a clamping flange arranged on the outer wall of the protective sleeve and a clamping groove arranged on the inner wall of the protective sleeve, and adjacent protective sleeves are clamped and connected by the clamping flange and the clamping groove.

[0010] According to the submarine cable rear protection device provided by the utility model, the length of the clamping flange is smaller than the depth of the clamping groove, and the thickness of the clamping flange is smaller than the width of the clamping groove.

[0011] According to the submarine cable rear protection device provided by the utility model, the clamping groove is arranged at the first end of the protective sleeve, and the clamping flange is arranged at the second end of the protective sleeve.

[0012] According to the submarine cable rear protection device provided by the utility model, the connection structure includes a first connection hole, a second connection hole, a bolt and a nut, the first connection hole is arranged at the second end of the first connection part, the second connection hole is arranged at the second end of the second connection part, the bolt is passed through the first connection hole and the second connection hole and cooperates with the nut.

[0013] According to the submarine cable rear protection device provided by the utility model, a first mounting portion is provided on the first connecting portion, a second mounting portion is provided on the second connecting portion, the first connecting hole is provided on the first mounting portion, and the second connecting hole is provided on the second mounting portion.

[0014] According to the submarine cable rear protection device provided by the utility model, a conical cavity adapted to the J-tube flare is formed in the protective sleeve located at the first position.

[0015] According to the submarine cable rear protection device provided by the utility model, a limit platform is provided in the protective cover located at the first position, and the limit platform is used to prevent the axial movement of the protective cover.

[0016] According to the submarine cable rear protection device provided by the utility model, the protective cover is a corrosion-resistant protective cover.

[0017] The submarine cable rear protection device provided by the utility model further comprises a bending limiter, and the bending limiter is connected to the protective sleeve at the rear end.

[0018] The use principle of the submarine cable rear protection device provided by the utility model is as follows:

[0019] During installation, the second end of the protective cover is opened and aligned with the damaged central clamp or bend limiter, and the first connection part and the second connection part are rotated around the hinge center of the first end of the protective cover to cover the damaged central clamp or bend limiter inside the protective cover, and the second ends of the first connection part and the second connection part are connected and fixed by the connection structure to achieve the fixation of a single protective cover. In the subsequent installation process, the protective cover is connected to the previous protective cover by snap-fitting, and the second ends of the first connection part and the second connection part are connected and fixed by the connection structure, and this is done until all the protective covers are installed.

[0020] The submarine cable rear protection device provided by the utility model can be installed without removing the damaged or slipped protection device, thereby reducing the installation risk of the rear protection device. The defects of the existing rear protection device that the installation is difficult and the submarine cable is easily damaged during the installation process are solved, and the installation process of the rear protection device is simplified.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a diagram showing the use status of the submarine cable rear protection device provided by an embodiment of the utility model;

[0024] Figure 2 It is a cross-sectional view of a use state diagram of a submarine cable rear protection device provided by an embodiment of the utility model;

[0025] Figure 3 yes Figure 2 A is a partial enlarged schematic diagram;

[0026] Figure 4 It is a schematic diagram of a protective cover located at the first position in the rear protection device of a submarine cable provided by an embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of a protective sleeve located in the middle position of the rear protection device for a submarine cable provided by an embodiment of the utility model;

[0028] Figure 6 yes Figure 5 A partial enlarged schematic diagram of B in the figure.

[0029] Reference numerals:

[0030] 10. Protective cover; 110. First connecting portion; 111. First mounting portion; 120. Second connecting portion; 121. Second mounting portion; 130. Snap-fit ​​flange; 140. Slot; 150. Bolt; 160. Nut; 20. Bending limiter; 30. J-tube bell mouth. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Combine the following Figures 1 to 6 The utility model describes a submarine cable rear protection device.

[0037] See also Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the rear protection device of the submarine cable provided by the utility model comprises a plurality of protective covers 10. The protective covers 10 comprise a first connecting portion 110 and a second connecting portion 120, the first ends of the first connecting portion 110 and the second connecting portion 120 are hinged, a connecting structure is provided between the first connecting portion 110 and the second connecting portion 120, and the second ends of the first connecting portion 110 and the second connecting portion 120 are connected by the connecting structure; a clamping structure is provided between adjacent protective covers 10, and adjacent protective covers 10 are clamped and connected by the clamping structure.

[0038] During installation, the second end of the protective cover 10 is opened and aligned with the damaged central clamp or bend limiter 20, and the first connection part 110 and the second connection part 120 are rotated around the hinge center of the first end of the protective cover 10 to cover the damaged central clamp or bend limiter 20 inside the protective cover 10, and the second ends of the first connection part 110 and the second connection part 120 are connected and fixed through the connection structure to achieve the fixation of a single protective cover 10. In the subsequent installation process, the protective cover 10 is connected with the previous protective cover 10 by snapping, and the second ends of the first connection part 110 and the second connection part 120 are connected and fixed through the connection structure, until all protective covers 10 are installed.

[0039] The submarine cable rear protection device provided by the utility model can be installed without removing the damaged or slipped protection device, thereby reducing the installation risk of the rear protection device. The defects of the existing rear protection device that the installation is difficult and the submarine cable is easily damaged during the installation process are solved, and the installation process of the rear protection device is simplified.

[0040] Specifically, see Figure 4 and Figure 5As shown, in this embodiment, the first connection part 110 and the second connection part 120 are both arc-shaped parts. After the second ends of the first connection part 110 and the second connection part 120 are connected by a connecting structure, they can be sleeved on the outside of the damaged center clamp or bending limiter 20 to achieve rear protection.

[0041] The rear protection device of the submarine cable includes seven protective covers 10. To adapt to different working conditions, the specifications of the protective covers 10 can be the same or different. Figure 1 As shown, when the J-tube bell mouth 30 of the submarine cable needs to be rear-protected, the protective cover 10 at the first position has slightly different specifications from the other protective covers 10, and a conical cavity matching the shape of the J-tube bell mouth 30 is formed inside the protective cover 10. When the protective cover 10 is sleeved on the J-tube bell mouth 30, the conical cavity and the J-tube bell mouth 30 cooperate with each other to limit the protective cover 10 at the first position. The rear protection device can be installed without pulling the submarine cable up and down, simplifying the installation steps.

[0042] The connection structure between the first connection part 110 and the second connection part 120 can be a detachable connection structure or a permanent connection structure. The detachable connection structure can be a connection structure such as a threaded connection, a quick plug-in connection, a snap-fit ​​connection, and a clamping connection. The permanent connection structure can be a connection structure such as welding, bonding, and riveting. Since the rear protection device needs to be installed underwater by a diver, in the specific implementation, the connection structure between the first connection part 110 and the second connection part 120 can be a connection structure suitable for underwater operations, such as the above-mentioned threaded connection, quick plug-in connection, snap-fit ​​connection, and clamping connection.

[0043] See also Figure 3 As shown, according to some embodiments of the present invention, the clamping structure includes a clamping flange 130 provided on the outer wall of the protective cover 10 and a clamping groove 140 provided on the inner wall of the protective cover 10, and adjacent protective covers 10 are clamped and connected by the clamping flange 130 and the clamping groove 140. The above structure has good stability after the clamping flange 130 and the clamping groove 140 are clamped and matched, and can prevent the connection between the protective covers 10 from failing, and the clamping flange 130 and the clamping groove 140 are easy to process and manufacture, and the production cost is low.

[0044] Specifically, see Figures 1 to 5As shown, according to some embodiments of the present invention, the card slot 140 is provided at the first end of the protective sleeve 10, and the card connection flange 130 is provided at the second end of the protective sleeve 10. By placing the card slot 140 and the card connection flange 130 at different ports of the protective sleeve 10, the utilization rate of each protective sleeve 10 can be maximized, and the number of protective sleeves 10 used can be reduced when a portion of a set length is post-protected. In addition, by placing the card slot 140 and the card connection flange 130 at different ports of the protective sleeve 10, it is easier to align adjacent protective sleeves 10 to ensure the correct docking between the connecting parts.

[0045] See also Figure 3 As shown, according to some embodiments of the present invention, the length of the clamping flange 130 is less than the depth of the clamping slot 140, and the thickness of the clamping flange 130 is less than the width of the clamping slot 140. The design mode that the length of the clamping flange 130 is less than the depth of the clamping slot 140, and the thickness of the clamping flange 130 is less than the width of the clamping slot 140 has the following advantages: after the clamping flange 130 is clamped and matched with the clamping slot 140, a certain margin space can be left between the clamping slot 140 and the clamping flange 130 on the premise of ensuring that the adjacent protective covers 10 are connected to each other. When the submarine cable is bent, the adjacent protective covers 10 can be slightly displaced through the margin space, which can effectively prevent the risk of deformation of the protective covers 10 caused by rigid contact. In addition. The length of the clamping flange 130 is less than the depth of the clamping slot 140, and the thickness of the clamping flange 130 is less than the width of the clamping slot 140, which can facilitate the installation of the protective cover 10 to ensure smooth connection.

[0046] See also Figure 3 As shown, according to some embodiments of the utility model, the connection structure includes a first connection hole, a second connection hole, a bolt 150 and a nut 160, the first connection hole is provided at the second end of the first connection part 110, the second connection hole is provided at the second end of the second connection part 120, and the bolt 150 is passed through the first connection hole and the second connection hole and cooperates with the nut 160. The above connection structure has the following advantages: simple structure and easy installation; it can provide higher connection strength and stability to the second ends of the first connection part 110 and the second connection part 120, ensuring the firmness of the connection parts. The threaded connection can provide a larger connection area, increase the contact area of ​​the connection, and thus improve the reliability of the connection. The connection mode of the bolt 150 and the nut 160 allows the connection parts to be easily disassembled and assembled. The connection can be disassembled by simply loosening the nut 160, which is convenient for maintenance and replacement of parts.

[0047] See also Figure 6As shown, according to some embodiments of the utility model, the first connection part 110 is provided with a first mounting part 111, the second connection part 120 is provided with a second mounting part 121, the first connection hole is provided on the first mounting part 111, and the second connection hole is provided on the second mounting part 121. The first mounting part 111 and the second mounting part 121 can provide installation space for the first connection hole and the second connection hole respectively, and can help accurately locate the positions of the first connection hole and the second connection hole, and ensure the alignment between the connection holes. In this way, position deviation during installation can be effectively avoided, and the accuracy and efficiency of installation can be improved.

[0048] See also Figure 1 , Figure 2 as well as Figure 4 As shown, according to some embodiments of the utility model, a conical cavity adapted to the J-tube flare 30 is formed in the protective cover 10 located in the first position. By forming a conical cavity adapted to the J-tube flare 30 in the protective cover 10 located in the first position, the rear protection device of the submarine cable can be suitable for rear protection at the position of the J-tube flare 30. And the protective cover 10 located in the first position can be preliminarily positioned, and the rear protection device can be installed without pulling the submarine cable up and down, simplifying the installation steps. In addition, it can be known from the above content that in specific implementation, by selecting protective covers 10 of different specifications, different positions of the submarine cable can be rear-protected.

[0049] See also Figure 4 As shown, according to some embodiments of the present invention, a limiting platform is provided in the first protective sleeve 10, and the limiting platform is used to prevent the axial movement of the protective sleeve 10. During installation, the bottom of the J-tube bell mouth 30 can be abutted against the limiting platform, so that under the joint limiting action of the limiting platform and the conical cavity, the axial movement of the protective sleeve 10 can be effectively prevented.

[0050] According to some embodiments of the utility model, the protective cover is a corrosion-resistant protective cover, which can effectively extend its service life. For example, the protective cover can be made of 316L stainless steel, PVC (polyvinyl chloride), PTFE (polytetrafluoroethylene) or FRP (glass reinforced plastic) and other materials, which have strong seawater corrosion resistance and can effectively resist corrosion in seawater.

[0051] See also Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the rear protection device of the submarine cable further includes a bending limiter 20, which is connected to the last protective cover 10. After each protective cover 10 is installed, the bending limiter 20 can be used to protect the submarine cable, limit the bending degree of the submarine cable during use, and reduce the stress and damage risk to the submarine cable.

[0052] The following is a specific example of the submarine cable rear protection device provided by the utility model. Figures 1 to 6 .

[0053] The rear protection device of the submarine cable provided by the utility model comprises a bending limiter 20 and a plurality of protective covers 10, wherein the protective covers 10 comprise a first connecting portion 110 and a second connecting portion 120, wherein the first ends of the first connecting portion 110 and the second connecting portion 120 are hinged, and a connecting structure is provided between the first connecting portion 110 and the second connecting portion 120, wherein the connecting structure comprises a first connecting hole, a second connecting hole, a bolt 150 and a nut 160, wherein the first connecting hole is provided at the second end of the first connecting portion 110, the second connecting hole is provided at the second end of the second connecting portion 120, and the bolt 150 is passed through the first connecting hole and the second connecting hole and matched with the nut 160. A card slot 140 is provided at the first end of the protective cover 10, and a card flange 130 is provided at the second end of the protective cover 10, wherein when installing, adjacent protective covers 10 can be connected by the card slot 140 and the card flange 130 card fitting, and the structure is simple and the operation is convenient.

[0054] The length of the clamping flange 130 is smaller than the depth of the clamping groove 140, and the thickness of the clamping flange 130 is smaller than the width of the clamping groove 140. After the clamping flange 130 is clamped and matched with the clamping groove 140, a certain margin space can be left between the clamping groove 140 and the clamping flange 130 on the premise of ensuring that the adjacent protective covers 10 are connected to each other. When the submarine cable is bent, the adjacent protective covers 10 can be slightly displaced through the margin space, which can effectively prevent the risk of deformation of the protective covers 10 due to rigid contact.

[0055] The protective cover 10 at the first position has a conical cavity adapted to the J-tube flare 30, so that the rear protection device of the submarine cable is suitable for rear protection at the position of the J-tube flare 30. The bending limiter 20 is connected to the last protective cover 10. After each protective cover 10 is installed, the bending limiter 20 can be used to protect the submarine cable, limit the bending degree of the submarine cable during use, and reduce the stress and damage risk of the submarine cable.

[0056] During installation, the second end of the protective cover 10 located in the first position is opened and aligned with the J-tube bell mouth 30. The first connecting part 110 and the second connecting part 120 are rotated around the hinge center of the first end of the protective cover 10, and the J-tube bell mouth 30 is covered inside the protective cover 10. The first connecting hole and the second connecting hole are aligned. The bolt 150 is inserted through the first connecting hole and the second connecting hole and matched with the nut 160. At this point, the protective cover 10 located in the first position is installed. Then, the second end of the rear protective cover 10 is opened so that the card slot 140 on it is aligned with the card flange 130 of the front protective cover 10 and fastened. Repeat the above operation and use the bolt 150 and the nut 160 to lock and fix the protective cover 10. After the protective cover 10 located in the last position is installed, the bending limiter 20 is installed below it. At this point, the installation of the entire set of rear protection devices for submarine cables is completed.

[0057] It can be seen from the description of the above embodiments that the submarine cable rear protection device provided by the utility model has at least the following advantages:

[0058] The submarine cable rear protection device provided by the utility model can be installed without removing the damaged or slipped protection device, thereby reducing the installation risk of the rear protection device. The defects of the existing rear protection device that the installation is difficult and the submarine cable is easily damaged during the installation process are solved, and the installation process of the rear protection device is simplified.

[0059] The submarine cable rear protection device provided by the utility model can install the rear protection device without pulling the submarine cable up and down by clamping the protective cover 10 located in the first position at the J-tube bell mouth 30, thereby simplifying the entire set of installation steps of the rear protection.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A rear protection device for a submarine cable, characterized in that: Includes multiple protective covers; The protective cover comprises a first connecting portion and a second connecting portion, wherein the first ends of the first connecting portion and the second connecting portion are hinged, a connecting structure is provided between the first connecting portion and the second connecting portion, and the second ends of the first connecting portion and the second connecting portion are connected via the connecting structure; A clamping structure is provided between adjacent protective covers, and adjacent protective covers are clamped and connected via the clamping structure; The clamping structure comprises a clamping flange provided on the outer wall of the protective sleeve and a clamping groove provided on the inner wall of the protective sleeve, and adjacent protective sleeves are clamped and connected via the clamping flange and the clamping groove; The connection structure comprises a first connection hole, a second connection hole, a bolt and a nut, wherein the first connection hole is provided at the second end of the first connection part, the second connection hole is provided at the second end of the second connection part, and the bolt is passed through the first connection hole and the second connection hole and matched with the nut; The first connection portion is provided with a first mounting portion, the second connection portion is provided with a second mounting portion, the first connection hole is provided at the first mounting portion, and the second connection hole is provided at the second mounting portion.

2. The rear protection device of a submarine cable according to claim 1, characterized in that: The length of the clamping flange is smaller than the depth of the clamping slot, and the thickness of the clamping flange is smaller than the width of the clamping slot.

3. The rear protection device of a submarine cable according to claim 1, characterized in that: The clamping groove is arranged at the first end of the protective sleeve, and the clamping flange is arranged at the second end of the protective sleeve.

4. The rear protection device for a submarine cable according to any one of claims 1 to 3, characterized in that: A conical cavity adapted to the bell mouth of the J-tube is formed in the protective sleeve located at the first position.

5. The rear protection device of a submarine cable according to claim 4, characterized in that: A limiting platform is arranged in the protective cover located at the first position, and the limiting platform is used to prevent the axis of the protective cover from moving.

6. The rear protection device for a submarine cable according to any one of claims 1 to 3, characterized in that: The protective cover is a corrosion-resistant protective cover.

7. The rear protection device for a submarine cable according to any one of claims 1 to 3, characterized in that: It also includes a bending limiter, which is connected to the protective sleeve at the last position.

Images