Multifunctional distributed high-voltage submarine cable

Abstract

The multifunctional distributed high-voltage submarine cable comprises a cable core, a wrapping tape, a lining layer, an armor layer and an outer protective layer which are sequentially arranged from inside to outside, the cable core comprises three insulation wire cores which are evenly distributed in the circumferential direction and tangent to each other in pairs, and a gap of a sector-like structure is formed between every two adjacent insulation wire cores and the wrapping tape. The gap is filled with a filling unit of an integral structure, an optical fiber unit is preassembled in the center of the filling unit, a 5G communication optical fiber, a temperature monitoring optical fiber and a micro-motion monitoring optical fiber are integrated in the optical fiber unit, and the temperature monitoring optical fiber and the micro-motion monitoring optical fiber are distributed optical fibers. According to the utility model, the 5G communication performance and the temperature and micro-motion monitoring function are realized, the problem of single function of the traditional submarine cable is solved, the optical fiber unit is protected, the optical fiber unit is prevented from being broken, and the use reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a multifunctional distributed high-voltage submarine cable. Background Art

[0002] With the development and utilization of marine resources, the demand for submarine cables is increasing day by day. Traditional submarine cables are relatively single in function and cannot meet the requirements of modern marine engineering for cable intelligence and multifunction. At present, although some submarine cables have certain monitoring functions, they are single in function and still have deficiencies in aspects such as communication ability, temperature, and the accuracy and reliability of micro-vibration monitoring. Moreover, the optical fiber units are only pre-set in one filling space, and the distribution of the optical fiber units is uneven. During production, construction, and actual use, the optical fiber units are easily broken under external forces, thus affecting the normal use of the entire submarine cable. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a multifunctional distributed high-voltage submarine cable for the deficiencies of the prior art, realizing 5G communication performance, temperature and micro-vibration monitoring functions, solving the problem of single function of traditional submarine cables, protecting the optical fiber units, avoiding the fracture of the optical fiber units, and improving the use reliability.

[0004] The technical solution to achieve the purpose of the utility model is as follows:

[0005] A multifunctional distributed high-voltage submarine cable includes a cable core, a wrapping tape, an inner liner, an armor layer, and an outer sheath, which are arranged in sequence from the inside to the outside. The cable core includes three insulated wire cores that are evenly distributed circumferentially and tangent to each other in pairs. A gap with a sector-like structure is formed between adjacent insulated wire cores and the wrapping tape. The gap is filled with a filling unit with an integral structure, and an optical fiber unit is pre-installed in the center of the filling unit. The optical fiber unit integrates 5G communication optical fibers, temperature monitoring optical fibers, and micro-vibration monitoring optical fibers, and both the temperature monitoring optical fibers and the micro-vibration monitoring optical fibers are distributed optical fibers.

[0006] Further, the wavelengths of the 5G communication optical fibers and the temperature monitoring optical fibers are 1550 ± 20 nm, and the wavelength of the micro-vibration monitoring optical fibers is 1625 ± 10 nm.

[0007] Further, the optical fiber unit includes a high-density polyethylene sheath, a stainless steel metal strengthening layer, and a water-blocking tape layer, which are arranged in sequence from the outside to the inside. The 5G communication optical fibers, the temperature monitoring optical fibers, and the micro-vibration monitoring optical fibers are all arranged in the water-blocking tape layer, and the stainless steel metal layer is composed of hollow circular tubes arranged closely in the circumferential direction.

[0008] Furthermore, the insulated wire core includes a water-blocking conductor, a conductor shield, a cross-linked polyethylene insulation, an insulating shield, a semi-conductive water-blocking tape, a lead sheath and a semi-conductive PE sheath which are arranged in sequence from the inside to the outside.

[0009] Furthermore, the water-blocking conductor includes a first copper conductor with a circular cross-section and a multi-layer conductor layer arranged around the first copper conductor, wherein the conductor layer includes a plurality of second copper conductors with a fan-shaped cross-section and closely arranged along the circumference.

[0010] Furthermore, the water-blocking conductor further comprises a water-blocking rope twisted between adjacent conductor layers and located in the gap between adjacent second copper conductors, and the conductor layer is wrapped with a water-blocking tape.

[0011] Furthermore, the semi-conductive water-resistant tape is wrapped in two layers and a polyester ribbon is directly dragged between the two layers, and the colors of the polyester ribbons in the three insulating cores are different.

[0012] Furthermore, the lining layer is a PP rope lining layer.

[0013] Furthermore, the armor layer is a galvanized steel wire armor layer with an outer surface coated with asphalt.

[0014] Furthermore, the outer sheath is a double-layer polypropylene rope outer layer and the outer layer is provided with a warning color tape.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] (1) The utility model abandons the traditional single-performance optical fiber unit design and innovatively integrates 5G communication optical fiber, temperature monitoring optical fiber and micro-motion monitoring optical fiber in the same optical fiber unit, thereby solving the problem of single function of traditional submarine cables and realizing multifunctional submarine cables. The 5G communication optical fiber realizes efficient and stable communication capabilities, providing strong guarantees for remote monitoring and data transmission of submarine cables. The temperature monitoring optical fiber and micro-motion monitoring optical fiber are used to monitor the operating status of the cable in real time, and potential fault hazards are discovered in time, thereby improving the reliability and safety of the cable. At the same time, the optical fiber unit is pre-installed in the filling unit of the integral structure, thereby limiting the position of the optical fiber unit, which not only ensures that the optical fiber unit is evenly distributed in the cable core, facilitates the production of the cable core, and improves the roundness of the cable core, but also plays a good protective role for the optical fiber unit during production, construction and actual use, thereby avoiding the breakage of the optical fiber unit and improving the reliability of use.

[0017] (2) The present utility model uses optical fibers with special wavelengths, with a wavelength of 1550 ± 20 nm for 5G communication and temperature monitoring, and a wavelength of 1625 ± 10 nm for micro - motion monitoring. The dynamic range at 20 ms is 41 dB. It has a long monitoring distance and can monitor temperature changes, minute movements, and vibrations, realizing real - time monitoring of temperature changes, minute movements, and vibrations at various parts of the cable respectively.

[0018] (3) The present utility model uses an optical fiber unit with a special structure to ensure the waterproof and pressure - resistant performance of the optical fiber unit.

[0019] (4) The insulating core of the present utility model uses cross - linked polyethylene insulating material, which has high insulation performance and anti - water - tree performance, and uses a semiconductive water - blocking tape and a lead sheath, that is, a combined structure of metal shielding and non - metal shielding, to reduce electromagnetic interference.

[0020] (5) The water - blocking conductor of the present utility model uses a copper conductor material with high conductivity to ensure that its quality meets the requirements of high - voltage transmission. It is stranded with a special wire structure to ensure a tight conductor structure, good conductivity, and a smooth surface, thereby ensuring a uniform electromagnetic field distribution.

[0021] (6) The present utility model strangles a water - blocking rope into the conductor and wraps a water - blocking tape, having excellent water - blocking performance.

[0022] (7) The present utility model wraps two layers of semiconductive water - blocking buffer tapes to play a role in uniforming the electric field and blocking water, and respectively adds polyester color tapes with different colors in the three insulating cores, corresponding to the A - phase, B - phase, and C - phase of the power, for easy distinction.

[0023] (8) The present utility model uses a galvanized steel wire armor layer and coats it with asphalt to effectively prevent seawater corrosion and extend the service life.

[0024] (9) The present utility model improves the visibility of the cable in the sea by setting warning color tapes, so that underwater operators or fishermen can easily identify it and avoid damaging the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to specific embodiments in conjunction with the drawings, where:

[0026] Figure 1 is a schematic structural diagram of the present utility model.

[0027] The reference numerals in the drawings are:

[0028] Cable core 1, insulated conductor core 1-1, water-blocking conductor 1-1-1, conductor shield 1-1-2, cross-linked polyethylene insulation 1-1-3, insulation shield 1-1-4, semi-conductive water-blocking tape 1-1-5, lead sheath 1-1-6, semi-conductive PE sheath 1-1-7, filling unit 1-2, optical fiber unit 1-3, wrapping tape 2, inner liner 3, armor layer 4, outer sheath 5. Specific embodiments

[0029] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0030] (Example 1)

[0031] As Figure 1 shown in the multi-functional distributed high-voltage submarine cable, which includes a cable core 1, a wrapping tape 2, an inner liner 3, an armor layer 4 and an outer sheath 5 arranged in sequence from inside to outside. The cable core 1 includes three insulated conductor cores 1-1 that are evenly distributed circumferentially and tangent to each other in pairs. A gap with a quasi-sector structure is formed between adjacent insulated conductor cores 1-1 and the wrapping tape. The gap is filled with a filling unit 1-2 with an integral structure. An optical fiber unit 1-3 is pre-installed at the center of the filling unit 1-2. By pre-installing the optical fiber unit 1-3 in the filling unit 1-2 with an integral structure, the position of the optical fiber unit 1-3 is limited. This not only ensures that the optical fiber unit 1-3 is evenly distributed in the cable core 1, facilitates the production of the cable core 1, improves the roundness of the cable core 1, but also plays a good protective role for the optical fiber unit 1-3 during production, construction and actual use, avoiding the fracture of the optical fiber unit 1-3 and improving the reliability of use. In this embodiment, 5G communication optical fiber, temperature monitoring optical fiber and micro-motion monitoring optical fiber are innovatively integrated in the optical fiber unit 1-3, and both the temperature monitoring optical fiber and the micro-motion monitoring optical fiber are distributed optical fibers, which solves the problem of the single function of traditional submarine cables and realizes a multi-functional submarine cable. Through the 5G communication optical fiber, efficient and stable communication capabilities are achieved, providing a strong guarantee for the remote monitoring and data transmission of submarine cables. Through the temperature monitoring optical fiber and the micro-motion monitoring optical fiber, the operating state of the cable is monitored in real time, potential fault hazards are detected in time, and the reliability and safety of the cable are improved.

[0032] Specifically, the insulated wire core 1-1 includes a water-blocking conductor 1-1-1, a conductor shield 1-1-2, a cross-linked polyethylene insulation 1-1-3, an insulation shield 1-1-4, a semiconductive water-blocking tape 1-1-5, a lead sheath 1-1-6, and a semiconductive PE sheath 1-1-7, which are arranged in sequence from inside to outside. The insulated wire core 1-1 uses cross-linked polyethylene insulation material, which has high insulation performance and anti-water tree performance, and uses a semiconductive water-blocking tape and a lead sheath, that is, a combined structure of metal shielding and non-metal shielding, to reduce electromagnetic interference. The water-blocking conductor 1-1-1 includes a first copper conductor with a circular cross-section structure and multiple conductor layers arranged around the first copper conductor. The conductor layers include multiple second copper conductors that are closely arranged circumferentially and have a fan-shaped cross-section structure. By using copper material with high conductivity as the conductor, its quality meets the requirements of high-voltage transmission, and it is stranded with a special-shaped wire structure to ensure a tight conductor structure, good electrical conductivity, and a smooth surface, thereby ensuring uniform electromagnetic field distribution. The water-blocking conductor 1-1 also includes a water-blocking rope stranded between adjacent conductor layers and located in the gaps between adjacent second copper conductors, and a water-blocking tape is wrapped around each conductor layer to achieve excellent water-blocking performance. The semiconductive water-blocking tape 1-1-5 is wrapped in two layers, which plays a role in uniforming the electric field and blocking water, and a polyester color tape is directly dragged between the two layers. The colors of the polyester color tapes in the three insulated wire cores 1-1 are different, corresponding to the A phase, B phase, and C phase of the power, respectively, for easy distinction.

[0033] The optical fiber unit 1-3 includes a high-density polyethylene sheath, a stainless steel metal strengthening layer, and a water-blocking tape layer, which are arranged in sequence from outside to inside. The 5G communication optical fiber, the temperature monitoring optical fiber, and the micro-movement monitoring optical fiber are all arranged in the water-blocking tape layer. The stainless steel metal layer is composed of hollow circular tubes that are closely arranged circumferentially, thus ensuring the waterproof and pressure-resistant performance of the optical fiber unit. The wavelengths of the 5G communication optical fiber and the temperature monitoring optical fiber are both 1550±20nm, the wavelength of the micro-movement monitoring optical fiber is 1625±10nm, and the dynamic range at 20ms is 41dB. The monitoring distance is long, and it can monitor temperature changes, micro-movements, and vibrations, respectively realizing real-time monitoring of the temperature changes, micro-movements, and vibrations of each part of the cable.

[0034] The inner liner layer 3 is a PP rope inner liner layer, the armor layer 4 is a galvanized steel wire armor layer with asphalt coated on the outer surface, which effectively prevents seawater corrosion and extends the service life. The outer sheath layer 5 is a double-layer polypropylene rope outer covering layer with a warning color tape on the outer layer, which improves the visibility of the cable in the sea so that underwater operators or fishermen can easily identify it and avoid damaging the cable.

[0035] The utility model abandons the traditional design of optical fiber units with single performance, and innovatively integrates 5G communication optical fibers, temperature monitoring optical fibers and micro-motion monitoring optical fibers in the same optical fiber unit 1-3 at the same time, solves the problem of single function of traditional submarine cables, realizes a multi-functional submarine cable, and realizes efficient and stable communication capabilities through the 5G communication optical fibers, providing a strong guarantee for the remote monitoring and data transmission of submarine cables. The operating state of the cable is monitored in real time through the temperature monitoring optical fiber and the micro-motion monitoring optical fiber, potential fault hazards are detected in time, and the reliability and safety of the cable are improved; at the same time, the optical fiber unit is pre-installed in the filling unit with an integral structure, so as to limit the position of the optical fiber unit, which not only ensures the uniform distribution of the optical fiber units 1-3 in the cable core, facilitates the production of the cable core, improves the roundness of the cable core, but also plays a good role in protecting the optical fiber unit during production, construction and actual use, avoids the fracture of the optical fiber unit, and improves the use reliability.

[0036] The specific embodiments described above further elaborate on the purpose, technical solutions and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multifunctional distributed high-voltage submarine cable, characterized in that: It includes a cable core, a wrapping tape, an inner lining layer, an armor layer and an outer sheath which are arranged in sequence from the inside to the outside. The cable core includes three insulating cores which are evenly distributed in the circumferential direction and arranged tangentially in pairs. A gap of a fan-shaped structure is formed between adjacent insulating cores and the wrapping tape. The gap is filled with a filling unit of an integral structure. The center of the filling unit is pre-installed with an optical fiber unit. The optical fiber unit integrates 5G communication optical fiber, temperature monitoring optical fiber and micro-motion monitoring optical fiber. Both the temperature monitoring optical fiber and the micro-motion monitoring optical fiber are distributed optical fibers.

2. A multifunctional distributed high-voltage submarine cable according to claim 1, characterized in that: The wavelengths of the 5G communication optical fiber and the temperature monitoring optical fiber are 1550±20nm, and the wavelength of the micro-motion monitoring optical fiber is 1625±10nm.

3. A multifunctional distributed high-voltage submarine cable according to claim 1, characterized in that: The optical fiber unit includes a high-density polyethylene sheath, a stainless steel metal reinforcement layer and a water-blocking tape layer arranged in sequence from the outside to the inside. The 5G communication optical fiber, temperature monitoring optical fiber and micro-motion monitoring optical fiber are all arranged in the water-blocking tape layer. The stainless steel metal reinforcement layer is composed of hollow circular tubes closely arranged along the circumferential direction.

4. A multifunctional distributed high-voltage submarine cable according to claim 1, characterized in that: The insulated wire core comprises a water-blocking conductor, a conductor shield, a cross-linked polyethylene insulation, an insulation shield, a semi-conductive water-blocking tape, a lead sheath and a semi-conductive PE sheath which are sequentially arranged from the inside to the outside.

5. A multifunctional distributed high-voltage submarine cable according to claim 4, characterized in that: The water-blocking conductor comprises a first copper conductor with a circular cross-section and a multi-layer conductor layer arranged around the first copper conductor. The conductor layer comprises a plurality of second copper conductors arranged closely in the circumferential direction and with a fan-shaped cross-section.

6. A multifunctional distributed high-voltage submarine cable according to claim 5, characterized in that: The water-blocking conductor further comprises a water-blocking rope twisted between adjacent conductor layers and located at the gap between adjacent second copper conductors, and the conductor layer is wrapped with a water-blocking tape.

7. A multifunctional distributed high-voltage submarine cable according to claim 4, characterized in that: The semi-conductive water-resistant tape is wrapped in two layers and a polyester ribbon is directly dragged between the two layers. The colors of the polyester ribbons in the three insulating wire cores are different.

8. A multifunctional distributed high-voltage submarine cable according to claim 1, characterized in that: The inner lining layer is a PP rope inner lining layer.

9. A multifunctional distributed high-voltage submarine cable according to claim 1, characterized in that: The armor layer is a galvanized steel wire armor layer with asphalt coated on the outer surface.

10. A multifunctional distributed high-voltage submarine cable according to claim 1, characterized in that: The outer sheath is a double-layer polypropylene rope outer layer and the outer layer is provided with a warning color tape.

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