Corrosion-resistant offshore wind power cable

Abstract

The utility model relates to the technical field of cables, and discloses a corrosion-resistant offshore wind power cable, which comprises a corrosion-resistant layer, a protective strip, a supporting strip, a water-blocking layer I, water absorption strips, a water-blocking layer II, a metal braid layer, an insulating layer, an outer core wire and an inner core wire, and the inner periphery of the waterproof layer II is fixedly connected with a metal braid layer. According to the corrosion-resistant offshore wind power cable provided by the utility model, the metal braid layer is the fiber braid layer formed by weaving the diamagnetic metal fibers, and the metal braid layer can well prevent an electromagnetic field generated by the outer core wire and the inner core wire during power transmission from causing wet salt-containing water adsorbed in the air to drop on the surface of the corrosion-resistant layer. And the water-absorbing strips are all formed by water-absorbing resin through one-time hot extrusion, and the water-absorbing strips can absorb water mist entering the water-blocking layer I and solidify when the anticorrosive layer and the water-blocking layer I are broken, so that self-repairing of the cable is completed, and the service life of the cable is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a corrosion-resistant offshore wind power cable. Background Art

[0002] With the rapid development of my country's economy, the acceleration of industrialization and urbanization, energy demand has grown rapidly. Renewable energy such as wind energy, photovoltaic solar energy, biomass energy and geothermal energy have once again ushered in development opportunities. my country has abundant wind power resources, but most wind farms are distributed in grasslands and coastal areas, especially in the eastern coastal areas of my country, where the sea area within a water depth of less than 50 meters is vast and close to the power load center (the coastal economically developed and power-scarce areas). With the development and maturity of offshore wind farm technology, wind power will surely become an important energy source for sustainable development in the eastern coastal areas of my country.

[0003] Offshore wind power generation requires corresponding power cables to transmit high-power electricity, which is equivalent to the function of underground power cables. However, since the cables installed at sea not only need to complete the transmission and power generation in a relatively humid environment, but also the humid air contains a high content of sea salt, if traditional cables are used, the humid air containing sea salt will cause severe corrosion to the cables and cause damage to the cables. Utility Model Content

[0004] The main purpose of the utility model is to provide a corrosion-resistant offshore wind power cable, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A corrosion-resistant offshore wind power cable comprises an anti-corrosion layer, a protective strip, a supporting strip, a first water-blocking layer, a water-absorbing strip, a second water-blocking layer, a metal braided layer, an insulating layer, an outer core wire and an inner core wire, wherein the outer periphery of the anti-corrosion layer is evenly distributed with the protective strip, the inner periphery of the anti-corrosion layer is evenly distributed with the supporting strip, the inner periphery of the supporting strip is fixedly connected to the outer periphery of the first water-blocking layer, the inner periphery of the first water-blocking layer is evenly distributed with the water-absorbing strip, the inner sides of the water-absorbing strips are fixedly connected to the outer side of the second water-blocking layer, the inner periphery of the second water-blocking layer is fixedly connected with the metal braided layer, the inner periphery of the metal braided layer is fixedly connected with the insulating layer, the inner periphery of the insulating layer is fixedly connected with the outer core wire, and the inner core wire is fixedly connected to the inner core wire.

[0007] Preferably, the outer core wire and the inner core wire are both tinned copper wires, and are twisted together.

[0008] Preferably, the anti-corrosion layer and the protection strip are made of the same material and are thermoplastic polyether polyurethane formed by one-time hot extrusion.

[0009] Preferably, the support bars are all stainless steel wires in a threaded shape and are evenly distributed between the support bars and the water-blocking layer 1.

[0010] Preferably, the metal braided layer is a fiber braided layer braided with antimagnetic metal fibers.

[0011] Preferably, the water-absorbing strips are all formed by hot extrusion of water-absorbing resin.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The anti-corrosion layer and the protective strip are thermoplastic polyether polyurethane formed by one-time hot extrusion. The thermoplastic polyether polyurethane has good wear resistance and corrosion resistance. At the same time, the protective strip protects the anti-corrosion layer, so that the anti-corrosion layer will not be worn when the cable is pulled on the ground. The metal braided layer is a fiber braided layer woven with antimagnetic metal fibers. The metal braided layer can effectively prevent the electromagnetic field generated by the outer core wire and the inner core wire when transmitting power, resulting in the adsorption of humid salt water in the air and droplets on the surface of the anti-corrosion layer. The water-absorbing strips are all water-absorbing resin formed by one-time hot extrusion. When the anti-corrosion layer and the water-blocking layer are broken, the water-absorbing strip can absorb the water mist entering the water-blocking layer and solidify it, thereby completing the self-repair of the cable and improving the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the partial internal structure of a corrosion-resistant offshore wind power cable of the utility model;

[0015] Figure 2 It is a partial three-dimensional schematic diagram of the core wire of a corrosion-resistant offshore wind power cable of the utility model;

[0016] Figure 3 It is a partial three-dimensional schematic diagram of the inner core wire of a corrosion-resistant offshore wind power cable of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the side structure of a corrosion-resistant offshore wind power cable.

[0018] In the figure: 1. Anti-corrosion layer; 2. Protection strip; 3. Support strip; 4. Water-blocking layer 1; 5. Water-absorbing strip; 6. Water-blocking layer 2; 7. Metal braided layer; 8. Insulation layer; 9. Outer core wire; 10. Inner core wire. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-4As shown, a corrosion-resistant offshore wind cable comprises an anti-corrosion layer 1, a protective strip 2, a supporting strip 3, a water-blocking layer 1 4, a water-absorbing strip 5, a water-blocking layer 2 6, a metal braided layer 7, an insulating layer 8, an outer core wire 9 and an inner core wire 10. The protective strips 2 are evenly distributed on the periphery of the anti-corrosion layer 1, the supporting strips 3 are evenly distributed inside the anti-corrosion layer 1, the inner peripheries of the supporting strips 3 are fixedly connected to the outer periphery of the water-blocking layer 1 4, the inner periphery of the water-blocking layer 1 4 is evenly distributed with water-absorbing strips 5, the inner sides of the water-absorbing strips 5 are fixedly connected to the outer sides of the water-blocking layer 2 6, the inner periphery of the water-blocking layer 2 6 is fixedly connected with the metal braided layer 7, the inner periphery of the metal braided layer 7 is fixedly connected with the insulating layer 8, the inner part of the insulating layer 8 is fixedly connected with the outer core wire 9, and the inner part of the outer core wire 9 is fixedly connected with the inner core wire 10.

[0021] In this embodiment, the outer core wire 9 and the inner core wire 10 are both tinned copper wires and are twisted together. By twisting the outer core wire 9 and the inner core wire 10 together, the outer core wire 9 and the inner core wire 10 are not easily broken when the cable is bent.

[0022] In this embodiment, the anti-corrosion layer 1 and the protective strip 2 are made of the same material and are thermoplastic polyether polyurethane formed by one-time hot extrusion. Thermoplastic polyether polyurethane has good wear resistance and corrosion resistance. At the same time, the protective strip 2 protects the anti-corrosion layer 1, so that the anti-corrosion layer 1 will not be worn when the cables are pulled on the ground.

[0023] In this embodiment, the support bars 3 are all stainless steel wires in a threaded shape and are evenly distributed between the support bars 3 and the water-blocking layer 4. The support bars 3 can provide good support and protection for the inside of the cable, while preventing the cable from being excessively bent when bent, resulting in breakage of the outer core wire 9 and the inner core wire 10.

[0024] In this embodiment, the metal braided layer 7 is a fiber braided layer woven with antimagnetic metal fibers. The metal braided layer 7 can effectively prevent the electromagnetic field generated by the outer core wire 9 and the inner core wire 10 when transmitting power, which causes the humid salt water in the air to drop onto the surface of the anti-corrosion layer 1.

[0025] In this embodiment, the water-absorbing strips 5 are all made of water-absorbing resin through one-time hot extrusion molding. When the anti-corrosion layer 1 and the water-blocking layer 4 are broken, the water-absorbing strips 5 can absorb the water mist entering the water-blocking layer 4 and solidify it, thereby completing the self-repair of the cable.

[0026] Working principle:

[0027] The anti-corrosion layer 1 and the protective strip 2 are thermoplastic polyether polyurethane formed by one-time hot extrusion. The thermoplastic polyether polyurethane has good wear resistance and corrosion resistance. At the same time, the protective strip 2 protects the anti-corrosion layer 1, so that the anti-corrosion layer 1 will not be worn when the cable is pulled on the ground. The metal braided layer 7 is a fiber braided layer woven with antimagnetic metal fibers. The metal braided layer 7 can effectively prevent the electromagnetic field generated by the outer core wire 9 and the inner core wire 10 during power transmission, which causes the humid salt water in the air to drop on the surface of the anti-corrosion layer 1. The water-absorbing strips 5 are all water-absorbing resin formed by one-time hot extrusion. When the anti-corrosion layer 1 and the water-blocking layer 4 are broken, the water-absorbing strips 5 can absorb the water mist entering the water-blocking layer 4 and solidify it, thereby completing the self-repair of the cable and improving the service life of the cable.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A corrosion-resistant offshore wind power cable, comprising an anti-corrosion layer (1), a protective strip (2), a support strip (3), a first water-blocking layer (4), a water-absorbing strip (5), a second water-blocking layer (6), a metal braided layer (7), an insulating layer (8), an outer core wire (9) and an inner core wire (10), characterized in that: The outer periphery of the anti-corrosion layer (1) is uniformly distributed with protection strips (2), the interior of the anti-corrosion layer (1) is uniformly distributed with support strips (3), the inner peripheries of the support strips (3) are fixedly connected to the outer periphery of the first water-blocking layer (4), the inner periphery of the first water-blocking layer (4) is uniformly distributed with water-absorbing strips (5), the inner sides of the water-absorbing strips (5) are fixedly connected to the outer sides of the second water-blocking layer (6), the inner periphery of the second water-blocking layer (6) is fixedly connected with a metal braided layer (7), the inner periphery of the metal braided layer (7) is fixedly connected with an insulating layer (8), the interior of the insulating layer (8) is fixedly connected with an outer core wire (9), and the interior of the outer core wire (9) is fixedly connected with an inner core wire (10).

2. A corrosion-resistant offshore wind power cable according to claim 1, characterized in that: The outer core wire (9) and the inner core wire (10) are both electro-tinned copper wires and are twisted together.

3. The corrosion-resistant offshore wind power cable according to claim 1, characterized in that: The anti-corrosion layer (1) and the protection strip (2) are made of the same material and are thermoplastic polyether polyurethane formed by one-step hot extrusion.

4. The corrosion-resistant offshore wind power cable according to claim 1, characterized in that: The support bars (3) are all stainless steel wires that are evenly distributed in a threaded shape between the support bars (3) and the water-blocking layer 1 (4).

5. The corrosion-resistant offshore wind power cable according to claim 1, characterized in that: The metal braided layer (7) is a fiber braided layer braided with antimagnetic metal fibers.

6. The corrosion-resistant offshore wind power cable according to claim 1, characterized in that: The water-absorbing strips (5) are all formed by hot extrusion of water-absorbing resin.

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