Submarine cable suitable for floating wind power and processing method thereof

Abstract

The invention provides a submarine cable suitable for floating wind power and a processing method thereof. The submarine cable suitable for floating wind power comprises a dynamic cable, a static cable and a connecting piece, a first power unit and a first optical fiber unit of the dynamic cable are arranged on the inner side of a first inner protection layer, and a first armor layer, a second armor layer and a first outer protection layer are sequentially arranged on the periphery of the first inner protection layer; a second electric power unit and a second optical fiber unit of the static cable are arranged on the inner side of a second inner protection layer; a third armor layer and a second outer protection layer are sequentially arranged on the periphery of the second inner protection layer; the first power unit and the second power unit are integrally formed parts; the first optical fiber unit and the second optical fiber unit are integrally formed parts; the first inner protection layer and the second inner protection layer are integrally formed parts; the first armor layer and the third armor layer are integrally formed parts; the connecting piece is provided with a containing cavity used for containing the connecting position of the second armor layer and the second outer protection layer. Or is used for accommodating the joint of the second armor layer and the third armor layer; the containing cavity is filled with water blocking glue.

Description

Technical Field

[0001] The present invention relates to the technical field of submarine cables, and in particular to a submarine cable suitable for floating wind power and a processing method thereof. Background Art

[0002] Generally, offshore floating wind turbines are connected with dynamic cables. However, floating wind turbines are located in deep sea, and the cost of using dynamic cables for all output cables is high. Therefore, a combination of floating section dynamic cable + directly buried section static cable is generally used. There are generally two forms of connection between dynamic cable and static cable, one is to use flexible online transition joint, and the other is to use maintenance joint.

[0003] In order to ensure that the metal wire of the dynamic cable armor is dry and does not come into contact with seawater, the existing flexible transition joints have large sizes to meet their water-blocking performance, which is not conducive to product circulation, transportation and laying. The maintenance joints have poor bending performance and cannot meet the storage and transportation of the entire cable for the project. Summary of the invention

[0004] The present invention provides a submarine cable suitable for floating wind power and a processing method thereof, which are used to solve the problems in the prior art that the transition joints of dynamic cables and static cables are large in size, poor in bending performance, and unfavorable for storage and transportation.

[0005] The present invention provides a submarine cable suitable for floating wind power, comprising: a dynamic cable, comprising a first power unit, a first optical fiber unit, a first inner sheath, a first armor layer, a second armor layer and a first outer sheath, wherein the first power unit and the first optical fiber unit are arranged on the inner side of the first inner sheath, and the first armor layer, the second armor layer and the first outer sheath are arranged on the outer periphery of the first inner sheath in sequence; A static cable, comprising a second power unit, a second optical fiber unit, a second inner sheath, a third armor layer and a second outer sheath, wherein the second power unit and the second optical fiber unit are arranged on the inner side of the second inner sheath, and the third armor layer and the second outer sheath are arranged on the outer periphery of the second inner sheath in sequence; The first power unit and the second power unit are an integrally formed part; the first optical fiber unit and the second optical fiber unit are an integrally formed part; the first inner protective layer and the second inner protective layer are an integrally formed part; the first armor layer and the third armor layer are an integrally formed part; A connector having a receiving cavity for receiving the connection between the second armor layer and the second outer protective layer; or for receiving the connection between the second armor layer and the third armor layer; the receiving cavity is filled with water-blocking glue.

[0006] According to a submarine cable suitable for floating wind power provided by the present invention, the outer wall surface of the first armor layer close to the third armor layer is coated with water-blocking glue; the outer wall surface of the third armor layer close to the first armor layer is coated with water-blocking glue.

[0007] According to a submarine cable suitable for floating wind power provided by the present invention, the dynamic cable also includes a first filling unit, which is arranged on the inner side of the first inner protective layer; the static cable also includes a second filling unit, which is arranged on the inner side of the second inner protective layer; the first filling unit and the second filling unit are an integrally formed part.

[0008] According to a submarine cable suitable for floating wind power provided by the present invention, the dynamic cable also includes a first cabling tape and a reinforcement tape, the first cabling tape is arranged on the inner side of the first inner protective layer to fix the first power unit, the first optical fiber unit and the first filling unit; the reinforcement tape is arranged between the first armor layer and the second armor layer; the static cable also includes a second cabling tape, the second cabling tape is arranged on the inner side of the second inner protective layer to fix the second power unit, the second optical fiber unit and the second filling unit; the first cabling tape and the second cabling tape are an integrally formed part.

[0009] According to a submarine cable suitable for floating wind power provided by the present invention, a first fixing hole is provided on the side wall of the connecting piece close to the second armor layer, and the second armor layer is fixedly connected to the connecting piece through the first fixing hole; a second fixing hole is provided on the side wall of the connecting piece close to the second outer protective layer, and the second outer protective layer is fixedly connected to the connecting piece through the second fixing hole.

[0010] According to a submarine cable suitable for floating wind power provided by the present invention, the connector includes a non-metallic layer and a metal layer, and the metal layer is arranged on the outer wall surface of the non-metallic layer.

[0011] According to a submarine cable suitable for floating wind power provided by the present invention, the connector includes a first shell and a second shell, one of the first shell and the second shell is provided with a protrusion, and the other is provided with a matching portion, and the matching portion is matched and snap-connected with the protrusion to form an accommodating cavity.

[0012] According to a submarine cable suitable for floating wind power provided by the present invention, the first outer sheath and the second outer sheath are an integrally formed part.

[0013] The present invention also provides a method for processing a submarine cable suitable for floating wind power, which is used to process the submarine cable suitable for floating wind power as described in any one of the above items, and the processing method comprises: Continuously processing a power unit, an optical fiber unit, a filling unit, a cabling tape, an inner sheath and an armor layer, wherein the power unit comprises a first power unit and a second power unit, the optical fiber unit comprises a first optical fiber unit and a second optical fiber unit, the filling unit comprises a first filling unit and a second filling unit, the cabling tape comprises a first cabling tape and a second cabling tape, the inner sheath comprises a first inner sheath and a second inner sheath, and the armor layer comprises a first armor layer and a third armor layer; Processing a second armor layer on the outer wall surface of the first armor layer; After processing the second outer protective layer on the outer wall surface of the third armor layer, sleeve the connector at the connection between the second outer protective layer and the second armor layer, fill water-blocking glue between the connector and the second armor layer, and between the connector and the second outer protective layer, and process the first outer protective layer on the outer wall surfaces of the second armor layer and the connector; Alternatively, a connecting piece is sleeved at the connection between the second armor layer and the third armor layer, and a water-blocking glue is filled between the connecting piece and the second armor layer, and between the connecting piece and the third armor layer, and an outer protective layer is processed on the outer wall surfaces of the second armor layer, the third armor layer and the connecting piece, and the outer protective layer includes a first outer protective layer and a second outer protective layer.

[0014] According to a method for processing a submarine cable suitable for floating wind power provided by the present invention, a second armor layer is processed on the outer wall surface of the first armor layer, and before that, it also includes: coating a water-blocking glue on the outer wall surface of the first armor layer close to the third armor layer and the outer wall surface of the third armor layer close to the first armor layer.

[0015] According to a processing method for a submarine cable suitable for floating wind power provided by the present invention, when a connecting piece is sleeved at the connection between the second armor layer and the third armor layer, the second armor layer is fixed to the connecting piece; when a connecting piece is sleeved at the connection between the second outer sheath layer and the second armor layer, the second armor layer and the second outer sheath layer are fixedly connected to the connecting piece.

[0016] The submarine cable suitable for floating wind power provided by the present invention and the processing method thereof are respectively provided as one-piece molded parts for the power unit, optical fiber unit, inner sheath and armor layer with the same structure in the dynamic cable and the static cable, thereby reducing the number of connections; the static cable is connected to the second armor layer of the dynamic cable through a connector, and the first outer sheath is covered on the periphery of the second armor layer and the connector, thereby improving the water-blocking performance thereof; the cable is small in size and light in weight, thereby being conducive to production, storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces 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 creative work.

[0018] Figure 1 It is a schematic diagram of the structure of a submarine cable suitable for floating wind power in water provided by the present invention; Figure 2 It is a schematic structural diagram of a submarine cable suitable for floating wind power provided by the present invention; Figure 3 is a cross-sectional schematic diagram of a dynamic cable provided by the present invention; Figure 4 is a cross-sectional schematic diagram of a static cable provided by the present invention; Figure 5 It is a structural schematic diagram of the connecting piece provided by the present invention; Figure 6 is a cross-sectional view of a connector provided by the present invention; Figure 7 It is a schematic flow chart of a method for processing a submarine cable applicable to floating wind power provided by the present invention; Reference numerals: 10. Dynamic cable; 11. First power unit; 12. First optical fiber unit; 13. First filling unit; 14. First cabling tape; 15. First inner sheath; 16. First armor layer; 17. Reinforcement tape; 18. Second armor layer; 19. First outer sheath; 20. static cable; 21. second power unit; 22. second optical fiber unit; 23. second filling unit; 24. second cabling tape; 25. second inner sheath; 26. third armor layer; 27. second outer sheath; 30. Connector; 31. First housing; 32. Second housing; 33. Metal layer; 34. Non-metal layer; 35. First fixing hole; 36. Second fixing hole; 40. Fixing strap. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0020] In the description of the embodiments of the present invention, 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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "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 embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0024] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0025] Combine the following Figure 1-Figure 7 The invention describes a submarine cable suitable for floating wind power and a processing method thereof.

[0026] The embodiment of the present invention provides a submarine cable suitable for floating wind power, including a dynamic cable 10, a static cable 20 and a connector 30, such as Figure 1 shown.

[0027] like Figure 3 As shown, the dynamic cable 10 includes a first power unit 11, a first optical fiber unit 12, a first inner sheath 15, a first armor layer 16, a second armor layer 18 and a first outer sheath 19. The first power unit 11 is used to carry out current transmission. The first optical fiber unit 12 is used to realize information transmission and monitoring of the power unit. The first power unit 11 and the first optical fiber unit 12 are arranged on the inner side of the first inner sheath 15, and the first inner sheath 15 can be a polyethylene inner sheath for protecting the first power unit 11 and the first optical fiber unit 12 inside. The first armor layer 16, the second armor layer 18 and the first outer sheath 19 are arranged on the outer periphery of the first inner sheath 15 in sequence. Among them, the first armor layer 16 and the second armor layer 18 play a reinforcing role and improve their mechanical properties. The first outer sheath 19 is arranged on the outer periphery of the second armor layer 18 to protect the first armor layer 16 and the second armor layer 18 from being corroded by seawater. The first outer sheath 19 can be a sheath. The first armor layer 16 and the second armor layer 18 may be steel wire.

[0028] like Figure 4 As shown, the static cable 20 includes a second power unit 21, a second optical fiber unit 22, a second inner sheath 25, a third armor layer 26 and a second outer sheath 27. The second power unit 21 is used to carry out current transmission. The second optical fiber unit 22 is used to realize information transmission. The second power unit 21 and the second optical fiber unit 22 are arranged on the inner side of the second inner sheath 25, and the second inner sheath 25 can be a polyethylene inner sheath, which is used to protect the second power unit 21 and the second optical fiber unit 22 inside. The third armor layer 26 is arranged on the outer periphery of the second inner sheath 25 to strengthen and improve its mechanical properties. The second outer sheath 27 is arranged on the outer periphery of the third armor layer 26 to fix the third armor layer 26. The second outer sheath 27 can be a sheath or a PP rope. The third armor layer 26 can be a steel wire.

[0029] The first power unit 11 and the second power unit 21 in the embodiment of the present invention have the same structure and size, are an integral part, and can be produced continuously. The first optical fiber unit 12 and the second optical fiber unit 22 have the same size, optical fiber model and number of optical fiber units, are an integral part, and can be produced continuously. The first inner protective layer 15 and the second inner protective layer 25 have the same material and size, such as a polyethylene inner sheath, and are an integral part, and can be produced continuously. The first armor layer 16 and the third armor layer 26 have the same material, structure and number, are an integral part, and can be produced continuously. That is, the power unit, optical fiber unit, inner protective layer and a layer of armor layer outside the inner protective layer in the dynamic cable 10 and the static cable 20 in the submarine cable are an integral part, and can be processed continuously.

[0030] Further, in one embodiment, the second armor layer 18 is processed on the periphery of the first armor layer 16, and the second outer sheath 27 is processed on the periphery of the third armor layer 26. At this time, the connection between the second armor layer 18 and the second outer sheath 27 is the connection between the dynamic cable 10 and the static cable 20. The connector 30 has a receiving cavity, and the connector 30 is sleeved at the connection between the second armor layer 18 and the second outer sheath 27 to fix the dynamic cable 10 and the static cable 20, such as Figure 2 As shown. In order to prevent seawater from entering between the inner wall surface of the connector 30 and the outer wall surface of the second outer protective layer 27 and / or the second armor layer 18, the embodiment of the present invention fills water-blocking glue between the inner wall surface of the connector 30 and the outer wall surface of the second outer protective layer 27, and between the inner wall surface of the connector 30 and the outer wall surface of the second armor layer 18 to strengthen the seal. After completion, the first outer protective layer 19 is extruded from the periphery of the second armor layer 18, and the first outer protective layer 19 covers the connector 30 and the part of the second outer protective layer 27 close to the connector 30, such as covering the second outer protective layer 27 for a length of 30-50 mm, etc., and the sealing is good.

[0031] In another embodiment, the second armor layer 18 is processed on the periphery of the first armor layer 16, and the connection between the second armor layer 18 and the third armor layer 26 is the connection between the dynamic cable 10 and the static cable 20. The connector 30 has a receiving cavity, and the connector 30 is sleeved at the connection between the second armor layer 18 and the third armor layer 26 to fix the dynamic cable 10 and the static cable 20. In order to prevent seawater from entering between the inner wall surface of the connector 30 and the outer wall surface of the second armor layer 18 and / or the outer wall surface of the third armor layer 26, the embodiment of the present invention fills water-blocking glue between the inner wall surface of the connector 30 and the outer wall surface of the second armor layer 18, and between the inner wall surface of the connector 30 and the outer wall surface of the third armor layer 26 to strengthen the seal. After completion, the first outer sheath 19 and the second outer sheath 27 are extruded from the periphery of the second armor layer 18 and the third armor layer 26. The first outer sheath 19 and the second outer sheath 27 are made of the same material, such as polyethylene sheaths, that is, the first outer sheath 19 and the second outer sheath 27 are integrally formed parts, which can be continuously produced. It should be noted that at this time, the outer sheath is also processed on the periphery of the connector 30. In addition, when the materials of the first outer sheath 19 and the second outer sheath 27 are different, they can be processed separately, and the first outer sheath 19 is processed on the periphery of the second armor layer 18, and the second outer sheath 27 is processed on the periphery of the third armor layer 26.

[0032] The submarine cable suitable for floating wind power provided by the embodiment of the present invention sets the power unit, optical fiber unit, inner sheath and armor layer with the same structure in the dynamic cable 10 and the static cable 20 as an integrally formed part to reduce the connection; the static cable 20 is connected to the second armor layer 18 of the dynamic cable 10 by the connector 30, and the first outer sheath 19 covers the periphery of the second armor layer 18 and the connector 30 to improve its water-blocking performance, and is small in size and light in weight, which is conducive to production, storage and transportation.

[0033] In order to improve the water-blocking performance of the submarine cable, in the embodiment of the present invention, after the first armor layer 16 and the third armor layer 26 are continuously produced, water-blocking glue is coated on the outer wall surface of the first armor layer 16 close to the third armor layer 26, such as coating 2500-3000mm; water-blocking glue is also coated on the outer wall surface of the third armor layer 26 close to the first armor layer 16, such as coating 2500-3000mm; that is, water-blocking glue is coated on both sides of the junction of the dynamic cable 10 and the static cable 20 to achieve water blocking. It should be noted that after the water-blocking glue on the outer wall surface of the first armor layer 16 and the outer wall surface of the third armor layer 26 solidifies, production is continued.

[0034] The dynamic cable 10 in the embodiment of the present invention further includes a first filling unit 13, which is arranged on the inner side of the first inner sheath 15, between the first optical fiber unit 12 and the first power unit 11, to improve the roundness of the cable core of the dynamic cable 10. The static cable 20 further includes a second filling unit 23, which is arranged on the inner side of the second inner sheath 25, between the second optical fiber unit 22 and the second power unit 21, to improve the roundness of the cable core of the static cable 20. Furthermore, the material, size and quantity of the first filling unit 13 and the second filling unit 23 can be the same, and can be an integrally formed part without connection, so that continuous production can be achieved.

[0035] The dynamic cable 10 further includes a first cabling tape 14, which is disposed inside the first inner sheath 15 to fix the first power unit 11, the second power unit 21 and the first filling unit 13. The static cable 20 further includes a second cabling tape 24, which is disposed inside the second inner sheath 25 to fix the second power unit 21, the second optical fiber unit 22 and the second filling unit 23. Furthermore, the first cabling tape 14 and the second cabling tape 24 are made of the same material and size, and can be an integrally formed part to achieve continuous production.

[0036] The dynamic cable 10 in the embodiment of the present invention further includes a reinforcing tape 17, which is disposed between the first armor layer 16 and the second armor layer 18 to prevent the first armor layer 16 and the second armor layer 18 from contacting and abrading each other, thereby playing a protective role.

[0037] Furthermore, in the embodiment of the present invention, the connecting member 30 is further provided with a first fixing hole 35 and a second fixing hole 36. Figure 5 As shown, the first fixing hole 35 is arranged on the side of the connector 30 close to the second armor layer 18, and the second armor layer 18 can be passed through the first fixing hole 35, and bent and knotted, so as to be fixedly connected to the connector 30, and prevent the second armor layer 18 from moving at will. Further, a fixing belt 40 is arranged on the outer periphery of the second armor layer 18, and the fixing belt 40 is used to fix the position of the second armor layer 18, so that the second armor layer 18 evenly covers the outer periphery of the first armor layer 16. The fixing belt 40 can be fixed near the position of the connector 30. The number of the fixing belts 40 can be multiple, and the multiple fixing belts 40 are arranged at intervals along the extension direction of the second armor layer 18. The fixing belt 40 in the embodiment of the present invention can be a metal fixing belt 40. The second fixing hole 36 is arranged on the side wall of the connector 30 close to the second outer sheath 27, and the second outer sheath 27 can be a PP rope, and the PP rope can be passed through the second fixing hole 36, bent and knotted, so as to be fixedly connected to the connector 30, thereby realizing the connection between the dynamic cable 10 and the static cable 20. Furthermore, the first outer protective layer 19 covers the second armor layer 18, the connector 30 and the outer wall surface of the second outer protective layer 27 close to the connector 30, preventing seawater from entering the interior through the second fixing hole 36, thereby achieving water blocking.

[0038] like Figure 6 As shown, the connector 30 in the embodiment of the present invention has a accommodating cavity with openings on both sides, and is sleeved at the connection between the second armor layer 18 and the third armor layer 26, wherein the connector 30 includes a metal layer 33 and a non-metal layer 34, wherein the metal layer 33 is arranged on the outer wall of the non-metal layer 34, and the non-metal layer 34 has a certain elasticity, and its inner diameter is generally selected to be 1-2mm larger than the maximum cable diameter. After installation, it can be pressed against the outer wall of the second armor layer 18 to achieve water blocking. The metal layer 33 provides the required mechanical stress for the connector 30. Furthermore, the embodiment of the present invention uses a highly elastic non-metal to press and block water before performing glue sealing. Its bending performance is higher than that of direct glue filling, and it is easy to bend, and it can avoid cracking after multiple bending, thereby helping to achieve water blocking.

[0039] The connecting member 30 in the embodiment of the present invention may be a Haversian structure. Figure 5 and Figure 6 As shown, the connector 30 includes a first shell 31 and a second shell 32, one of the first shell 31 and the second shell 32 is provided with a protrusion, and the other is provided with a matching portion, and the matching portion is engaged with the protrusion to form a receiving cavity. In the embodiment of the present invention, the connector 30 is provided as a detachable part, so as to facilitate installation and improve production efficiency. Furthermore, the connection between the first shell 31 and the second shell 32 is coated with a sealant to strengthen the seal and prevent seawater from entering the interior from the connection between the first shell 31 and the second shell 32.

[0040] Based on the cable applicable to floating wind power in any of the above embodiments, the present invention also provides a method for processing a submarine cable applicable to floating wind power. Figure 7 As shown, the processing method includes: step 100, continuously processing a power unit, an optical fiber unit, a filling unit, a cabling tape, an inner sheath and an armor layer, the power unit includes a first power unit and a second power unit, the optical fiber unit includes a first optical fiber unit and a second optical fiber unit, the filling unit includes a first filling unit and a second filling unit, the cabling tape includes a first cabling tape and a second cabling tape, the inner sheath includes a first inner sheath and a second inner sheath, and the armor layer includes a first armor layer and a third armor layer.

[0041] Specifically, the first power unit and the second power unit are processed continuously, and the first power unit and the second power unit are integrally formed parts, and do not need to be connected, so as to form the power unit of the submarine cable and realize current transmission. The first optical fiber unit and the second optical fiber unit are processed continuously, and the first optical fiber unit and the second optical fiber unit are integrally formed parts, and do not need to be connected, so as to form the optical fiber unit of the submarine cable and realize information transmission. The first filling unit and the second filling unit are processed continuously, and the first filling unit and the second filling unit are integrally formed parts, and do not need to be connected, so as to form the filling unit of the submarine cable, which is located between the optical fiber unit and the power unit and adjusts the roundness of the submarine cable. Further, the first cable wrapping tape and the second cable wrapping tape are produced continuously, and the first cable wrapping tape and the second cable wrapping tape are integrally formed parts, and do not need to be connected, so as to form the cable wrapping tape of the submarine cable and fix the optical fiber unit, the power unit and the filling unit of the submarine cable. The first inner sheath and the second inner sheath are produced continuously, and the first inner sheath and the second inner sheath are integrally formed parts, and do not need to be connected, so as to form the inner sheath of the submarine cable and protect the internal power unit, the optical fiber unit and the filling unit. The first armor layer and the third armor layer are produced continuously. The first armor layer and the third armor layer are one-piece molded parts and do not need to be connected. They form the armor layer of the submarine cable and enhance the mechanical properties.

[0042] Furthermore, the armor layer of the submarine cable is coated with water-blocking glue to prevent water from entering the internal optical fiber unit and power unit through the armor layer. Specifically, the outer wall surface of the first armor layer close to the third armor layer is coated with water-blocking glue, such as coating 2500-3000mm; the outer wall surface of the third armor layer close to the first armor layer is also coated with water-blocking glue, such as coating 2500-3000mm; that is, both sides of the junction of the dynamic cable and the static cable are coated with water-blocking glue to achieve water blocking. It should be noted that after the water-blocking glue on the outer wall surface of the first armor layer and the outer wall surface of the third armor layer solidifies, production can continue.

[0043] Step 200: Processing a second armor layer on the outer wall surface of the first armor layer.

[0044] Step 300, the second armor layer is processed on the periphery of the first armor layer, and the second outer sheath is processed on the periphery of the third armor layer. At this time, the connection between the second armor layer and the second outer sheath is the connection between the dynamic cable and the static cable. The connector has a accommodating cavity, and the connector is sleeved at the connection between the second armor layer and the second outer sheath to fix the dynamic cable and the static cable. In order to prevent seawater from entering from the inner wall surface of the connector and the outer wall surface of the second outer sheath and / or the second armor layer, the embodiment of the present invention fills water-blocking glue between the inner wall surface of the connector and the outer wall surface of the second outer sheath, and between the inner wall surface of the connector and the outer wall surface of the second armor layer to strengthen the sealing. After completion, the first outer sheath is extruded on the periphery of the second armor layer, and the first outer sheath covers the connector, and covers the part of the second outer sheath close to the connector, such as the length of the second outer sheath covered is 30-50mm, etc., and the sealing is good.

[0045] Furthermore, in the embodiment of the present invention, the connecting member is further provided with a first fixing hole and a second fixing hole. Figure 5 As shown, the first fixing hole is arranged on the side of the connecting member close to the second armor layer, and the second armor layer can be inserted into the first fixing hole, bent and knotted, so as to be fixedly connected to the connecting member, and prevent the second armor layer from moving at will. Further, a fixing belt is arranged on the outer periphery of the second armor layer, and the fixing belt is used to fix the position of the second armor layer, so that the second armor layer evenly covers the outer periphery of the first armor layer. The fixing belt can be fixed near the position of the connecting member. The number of fixing belts can be multiple, and multiple fixing belts are arranged at intervals along the extension direction of the second armor layer. The fixing belt in the embodiment of the present invention can be a metal fixing belt. The second fixing hole is arranged on the side wall of the connecting member close to the second outer sheath, and the second outer sheath can be a PP rope, and the PP rope can be inserted into the second fixing hole, bent and knotted, so as to be fixedly connected to the connecting member, thereby realizing the connection between the dynamic cable and the static cable. Further, the first outer sheath is processed on the outer wall surface of the second armor layer, the connecting member and the second outer sheath close to the connecting member to prevent seawater from entering the interior from the second fixing hole, and realize water blocking.

[0046] In another embodiment, a connector is sleeved at the connection between the second armor layer and the third armor layer to fix the dynamic cable and the static cable. It should be noted that a first fixing hole is provided on the side of the connector close to the second armor layer, and the second armor layer can be passed through the first fixing hole and bent and knotted, so as to be fixedly connected to the connector to prevent the second armor layer from moving at will. Furthermore, a fixing belt is provided on the outer periphery of the second armor layer, and the fixing belt is used to fix the position of the second armor layer so that the second armor layer evenly covers the outer periphery of the first armor layer. The fixing belt can be fixed near the position of the connector. The number of fixing belts can be multiple, and the multiple fixing belts are arranged at intervals along the extension direction of the second armor layer. The fixing belt in the embodiment of the present invention can be a metal fixing belt.

[0047] Furthermore, in order to prevent seawater from entering between the inner wall surface of the connector and the outer wall surface of the second armor layer and / or the outer wall surface of the third armor layer, a water-blocking glue is filled between the connector and the second armor layer, and between the connector and the third armor layer to strengthen the seal. After completion, the outer sheath is processed on the outer wall surface of the second armor layer, the third armor layer and the connector, and the outer sheath includes a first outer sheath and a second outer sheath. In one embodiment, the first outer sheath and the second outer sheath are made of the same material, such as polyethylene sheaths, that is, the first outer sheath and the second outer sheath are an integrally formed part, and continuous production can be performed. It should be noted that at this time, the outer sheath is also processed on the periphery of the connector. In another embodiment, the first outer sheath and the second outer sheath are made of different materials, and can be processed separately, the first outer sheath is processed on the periphery of the second armor layer, and the second outer sheath is processed on the periphery of the third armor layer. There is a repeated part at the junction of the first outer sheath and the second outer sheath on the connector, and the sealing is good.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 embodiments of the present invention.

Claims

1. A submarine cable suitable for floating wind power, characterized in that: include: A dynamic cable, comprising a first power unit, a first optical fiber unit, a first inner sheath, a first armor layer, a second armor layer and a first outer sheath, wherein the first power unit and the first optical fiber unit are arranged on the inner side of the first inner sheath, and the first armor layer, the second armor layer and the first outer sheath are arranged on the outer periphery of the first inner sheath in sequence; A static cable, comprising a second power unit, a second optical fiber unit, a second inner sheath, a third armor layer and a second outer sheath, wherein the second power unit and the second optical fiber unit are arranged on the inner side of the second inner sheath, and the third armor layer and the second outer sheath are arranged on the outer periphery of the second inner sheath in sequence; The first power unit and the second power unit are an integrally formed part; the first optical fiber unit and the second optical fiber unit are an integrally formed part; the first inner protective layer and the second inner protective layer are an integrally formed part; the first armor layer and the third armor layer are an integrally formed part; A connector having a receiving cavity for receiving the connection between the second armor layer and the second outer protective layer; or for receiving the connection between the second armor layer and the third armor layer; the receiving cavity is filled with water-blocking glue.

2. The submarine cable suitable for floating wind power according to claim 1, characterized in that: The outer wall surface of the first armor layer close to the third armor layer is coated with water-blocking glue; the outer wall surface of the third armor layer close to the first armor layer is coated with water-blocking glue.

3. The submarine cable suitable for floating wind power according to claim 1, characterized in that: The dynamic cable further includes a first filling unit, which is arranged on the inner side of the first inner sheath; the static cable further includes a second filling unit, which is arranged on the inner side of the second inner sheath; the first filling unit and the second filling unit are an integrally formed part.

4. The submarine cable suitable for floating wind power according to claim 3, characterized in that: The dynamic cable further includes a first cabling tape and a reinforcement tape, wherein the first cabling tape is arranged on the inner side of the first inner sheath to fix the first power unit, the first optical fiber unit and the first filling unit; the reinforcement tape is arranged between the first armor layer and the second armor layer; The static cable further comprises a second cabling tape, wherein the second cabling tape is arranged on the inner side of the second inner sheath to fix the second power unit, the second optical fiber unit and the second filling unit; The first cabling tape and the second cabling tape are an integrally formed part.

5. The submarine cable suitable for floating wind power according to claim 1, characterized in that: A first fixing hole is provided on the side wall of the connecting piece close to the second armor layer, and the second armor layer is fixedly connected to the connecting piece through the first fixing hole; a second fixing hole is provided on the side wall of the connecting piece close to the second outer protective layer, and the second outer protective layer is fixedly connected to the connecting piece through the second fixing hole.

6. The submarine cable suitable for floating wind power according to claim 1, characterized in that: The connecting piece comprises a non-metal layer and a metal layer, and the metal layer is arranged on the outer wall surface of the non-metal layer.

7. The submarine cable suitable for floating wind power according to claim 1, characterized in that: The connecting member comprises a first shell and a second shell, wherein one of the first shell and the second shell is provided with a protruding portion, and the other is provided with a matching portion, and the matching portion is matched and snap-fitted with the protruding portion to form an accommodating cavity.

8. The submarine cable suitable for floating wind power according to claim 1, characterized in that: The first outer protective layer and the second outer protective layer are an integrally formed part.

9. A method for processing a submarine cable suitable for floating wind power, characterized in that: Used for processing a submarine cable suitable for floating wind power according to any one of claims 1 to 8, the processing method comprising: Continuously processing a power unit, an optical fiber unit, a filling unit, a cabling tape, an inner sheath and an armor layer, wherein the power unit comprises a first power unit and a second power unit, the optical fiber unit comprises a first optical fiber unit and a second optical fiber unit, the filling unit comprises a first filling unit and a second filling unit, the cabling tape comprises a first cabling tape and a second cabling tape, the inner sheath comprises a first inner sheath and a second inner sheath, and the armor layer comprises a first armor layer and a third armor layer; Processing a second armor layer on the outer wall surface of the first armor layer; After processing the second outer protective layer on the outer wall surface of the third armor layer, sleeve the connector at the connection between the second outer protective layer and the second armor layer, fill water-blocking glue between the connector and the second armor layer, and between the connector and the second outer protective layer, and process the first outer protective layer on the outer wall surfaces of the second armor layer and the connector; Alternatively, a connecting piece is sleeved at the connection between the second armor layer and the third armor layer, and a water-blocking glue is filled between the connecting piece and the second armor layer, and between the connecting piece and the third armor layer, and an outer protective layer is processed on the outer wall surfaces of the second armor layer, the third armor layer and the connecting piece, and the outer protective layer includes a first outer protective layer and a second outer protective layer.

10. The method for processing a submarine cable suitable for floating wind power according to claim 9, characterized in that: Before processing a second armor layer on the outer wall surface of the first armor layer, the method further comprises: Water-blocking glue is coated on the outer wall surface of the first armor layer close to the third armor layer and the outer wall surface of the third armor layer close to the first armor layer.

11. The method for processing a submarine cable suitable for floating wind power according to claim 9, characterized in that: When the connecting piece is sleeved at the connection between the second armor layer and the third armor layer, the second armor layer is fixed to the connecting piece; when the connecting piece is sleeved at the connection between the second outer sheath layer and the second armor layer, the second armor layer and the second outer sheath layer are fixedly connected to the connecting piece.

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