submarine cables

Abstract

The present application provides a submarine cable, which includes a cable body, a cable assembly, an optical cable assembly, a gas-liquid pipeline, and a protective mechanism. The cable body is provided with a first accommodating cavity, a second accommodating cavity, and a partition structure. The first accommodating cavity and the second accommodating cavity are isolated from each other by the partition structure. The gas-liquid pipeline is arranged in the first accommodating cavity, the cable assembly and the optical cable assembly are arranged in the second accommodating cavity, and the protective mechanism is arranged on the outside of the cable body. By simultaneously arranging the cable assembly, the optical cable assembly, and the gas-liquid pipeline in the cable body, and separating the gas-liquid pipeline from the cable assembly and the optical cable assembly by arranging a partition structure, the transmission of electric energy, liquid or gaseous hydrogen energy / ammonia energy, and optical signals can be realized in the same submarine cable, thereby improving the integration of the submarine cable and reducing the transmission cost of electric energy, liquid or gaseous hydrogen energy / ammonia energy, and optical signals.

Description

Technical Field

[0001] The present application relates to the technical field of transmission equipment, and in particular to a submarine cable. Background Art

[0002] Developing offshore wind power generation through seawater electrolysis to produce hydrogen and ammonia for on-site consumption is one of the key trends in the current greening of the energy mix. The resulting liquid or gaseous hydrogen and ammonia must be transported to land via submarine cables. These cables include submarine electrical cables, submarine optical cables, and submarine optoelectronic composite cables, which can be used to transmit both electricity and communications.

[0003] However, the submarine cables in the above-mentioned related technologies cannot realize the transmission of electrical energy, liquid or gaseous hydrogen energy / ammonia energy and optical signals in the same submarine cable. Summary of the Invention

[0004] An embodiment of the present application provides a submarine cable for solving the technical problem in the above-mentioned related art that the submarine cable cannot realize the transmission of electrical energy, liquid or gaseous hydrogen energy / ammonia energy and optical signals in the same submarine cable.

[0005] In order to achieve the above objectives, the embodiments of the present application provide the following technical solutions:

[0006] The embodiment of the present application provides a submarine cable, which includes a cable body, an electrical cable assembly, an optical cable assembly, a gas and liquid pipeline, and a protective mechanism;

[0007] The cable body has a first accommodating cavity, a second accommodating cavity and a partition structure, the first accommodating cavity and the second accommodating cavity are isolated from each other by the partition structure, the gas-liquid pipeline is arranged in the first accommodating cavity, and the electrical cable assembly and the optical cable assembly are arranged in the second accommodating cavity;

[0008] The protection mechanism is arranged on the outside of the cable body.

[0009] Based on the above technical solution, this application can also be improved as follows.

[0010] In a possible implementation, the partition structure has a first groove on a side facing the gas-liquid pipeline, and the first groove and the inner wall surface of the cable body together form a first accommodating cavity;

[0011] The gas-liquid pipeline is arranged in the first groove, and part of the outer wall of the gas-liquid pipeline is in contact with the groove wall of the first groove;

[0012] And / or, the size of the notch of the first groove is smaller than the diameter of the gas-liquid pipeline.

[0013] In one possible implementation, the cable assembly includes a positive cable and a negative cable;

[0014] The partition structure has a second groove and a third groove on a side facing away from the first accommodating cavity, and the second groove, the third groove and the inner wall surface of the cable body together form a second accommodating cavity;

[0015] The positive cable is disposed in the second groove, and a portion of the outer side wall of the positive cable is in contact with the groove wall of the second groove;

[0016] The negative cable is disposed in the third groove, and a portion of the outer side wall of the negative cable is in contact with the groove wall of the third groove.

[0017] In one possible implementation, the cable assembly further includes a return cable;

[0018] The positive cable and the negative cable are against each other, a first gap is defined between the positive cable, the negative cable and the inner wall of the cable body, and the return cable is disposed in the first gap;

[0019] The return cable is held in the first space by the outer wall surfaces of the positive cable and the negative cable, and the inner wall surface of the cable body.

[0020] In a possible implementation, a filling structure is further provided in the first space, and the filling structure is provided between the return cable, the positive cable, and the inner wall surface of the cable body;

[0021] And / or the filling structure is arranged between the return cable, the negative cable and the inner wall surface of the cable body.

[0022] In a possible implementation, a second gap is further provided between the positive cable, the negative cable, and the partition structure;

[0023] The optical cable assembly is disposed in the second compartment, and the optical cable assembly abuts against the positive cable, the negative cable, and the partition structure, respectively.

[0024] In a possible implementation, the partition structure further includes a fourth groove, which is disposed between the second groove and the third groove; the fourth groove, the positive cable, and the negative cable together form the second partition;

[0025] The optical cable assembly is disposed in the fourth groove, and a portion of the outer sidewall of the optical cable assembly is in contact with the groove wall of the fourth groove.

[0026] In a possible implementation, the partition structure includes a first fan-shaped structure and a second fan-shaped structure that are symmetrical and interconnected, the first fan-shaped structure having a first arc-shaped edge, and the first arc-shaped edge is connected to an inner wall surface of the cable body facing away from the second fan-shaped structure;

[0027] The second fan-shaped structure has a second arc-shaped edge, and the second arc-shaped edge is connected to the inner wall surface of the cable body facing away from the first fan-shaped structure.

[0028] In a possible implementation, the positive cable includes a first core, a first shielding layer, and a first protective layer;

[0029] The first shielding layer is arranged on the outside of the first core, and the first protective layer is arranged on the outside of the first shielding layer;

[0030] The first protective layer is disposed in the second groove, and the first protective layer abuts against the inner wall surface of the cable body;

[0031] And / or, the positive cable further comprises a first insulating layer and a second shielding layer;

[0032] The first insulating layer is arranged on the outside of the first shielding layer, and the second shielding layer is arranged on the outside of the first insulating layer; the first insulating layer is arranged between the first shielding layer and the second shielding layer, and the second shielding layer is arranged between the first protective layer and the first insulating layer;

[0033] And / or, the positive cable further comprises a first water-blocking layer and a third shielding layer;

[0034] The first water-blocking layer is arranged on the outer side of the second shielding layer, the third shielding layer is arranged on the outer side of the first water-blocking layer, and the outer side of the third shielding layer is connected to the first protective layer;

[0035] The first water-blocking layer is disposed between the third shielding layer and the second shielding layer.

[0036] In a possible implementation, the negative cable includes a second core, a fourth shielding layer, and a second protective layer;

[0037] The fourth shielding layer is arranged on the outside of the second core, and the second protective layer is arranged on the outside of the fourth shielding layer;

[0038] The second protective layer is disposed in the third groove, and the second protective layer abuts against the inner wall surface of the cable body;

[0039] And / or, the negative cable further comprises a second insulating layer and a fifth shielding layer;

[0040] The second insulating layer is arranged on the outside of the fourth shielding layer, and the fifth shielding layer is arranged on the outside of the first insulating layer; the second insulating layer is arranged between the fourth shielding layer and the fifth shielding layer, and the fifth shielding layer is arranged between the second protective layer and the second insulating layer;

[0041] And / or, the negative cable further comprises a second water-blocking layer and a sixth shielding layer;

[0042] The second water-blocking layer is arranged on the outer side of the fifth shielding layer, the sixth shielding layer is arranged on the outer side of the second water-blocking layer, and the outer side of the sixth shielding layer is connected to the second protective layer;

[0043] The second water-blocking layer is disposed between the sixth shielding layer and the fifth shielding layer.

[0044] In a possible implementation, the return cable includes a third core, a seventh shielding layer, and a third protective layer;

[0045] The seventh shielding layer is arranged on the outside of the third core, the third protective layer is arranged on the outside of the seventh shielding layer, the third protective layer abuts against the first protective layer and the second protective layer, and the third protective layer abuts against the inner wall surface of the cable body;

[0046] And / or, the return cable further comprises a third insulation layer and an eighth shielding layer;

[0047] The third insulating layer is arranged on the outer side of the seventh shielding layer, the eighth shielding layer is arranged on the outer side of the third insulating layer, and the eighth shielding layer is arranged between the third protective layer and the third insulating layer;

[0048] And / or, the return cable further comprises a third water-blocking layer and a ninth shielding layer;

[0049] The third water-blocking layer is arranged on the outer side of the eighth shielding layer, the ninth shielding layer is arranged on the outer side of the third water-blocking layer, and the outer side of the ninth shielding layer is connected to the third protective layer.

[0050] In a possible implementation, the gas-liquid pipeline includes a gas-liquid pipeline, a first corrosion-resistant layer, and a first strengthening layer;

[0051] The first corrosion-resistant layer is arranged on the outside of the gas-liquid pipeline, the first strengthening layer is arranged on the outside of the first corrosion-resistant layer, and the first corrosion-resistant layer is arranged between the first strengthening layer and the gas-liquid pipeline;

[0052] And / or, the inner surface of the gas-liquid pipeline is provided with a first anti-permeation layer, the outer surface of the gas-liquid pipeline is provided with a second anti-permeation layer, and the first corrosion-resistant layer is provided on the outer side of the second anti-permeation layer;

[0053] And / or, the gas-liquid pipeline further comprises a second corrosion-resistant layer;

[0054] The second corrosion-resistant layer is arranged on the outer side of the first strengthening layer, and the second corrosion-resistant layer is arranged in the third groove.

[0055] In one possible implementation, the optical cable assembly includes a fourth core, a second reinforcement layer, a fourth insulation layer, and a first armor layer;

[0056] The second strengthening layer is arranged on the outside of the fourth core, the fourth insulating layer is arranged on the outside of the second strengthening layer, the first armor layer is arranged on the outside of the fourth insulating layer, and the fourth insulating layer is arranged between the second strengthening layer and the first armor layer;

[0057] And / or, the optical cable assembly further comprises a fourth water-blocking layer and a fifth insulating layer;

[0058] The fourth water-blocking layer is arranged on the outside of the first armor layer, the fifth insulation layer is arranged on the outside of the fourth water-blocking layer, the fourth water-blocking layer is arranged between the fifth insulation layer and the first armor layer, and the fifth insulation layer is arranged in the first groove.

[0059] In a possible implementation, the protective mechanism includes a wear-resistant layer, a second armor layer, and a third reinforcement layer;

[0060] The wear-resistant layer is arranged on the outside of the cable body, and the wear-resistant layer is located between the second armor layer and the cable body;

[0061] The second armor layer is arranged on the outer side of the wear-resistant layer, the third reinforcement layer is arranged on the outer side of the second armor layer, and the second armor layer is arranged between the third reinforcement layer and the wear-resistant layer.

[0062] An embodiment of the present application provides a submarine cable, which includes a cable body, a cable assembly, an optical cable assembly, a gas-liquid pipeline, and a protective mechanism. The cable body has a first accommodating cavity, a second accommodating cavity, and a partition structure. The first accommodating cavity and the second accommodating cavity are isolated from each other by the partition structure. The gas-liquid pipeline is arranged in the first accommodating cavity, the cable assembly and the optical cable assembly are arranged in the second accommodating cavity, and the protective mechanism is arranged on the outside of the cable body. By simultaneously arranging the cable assembly, the optical cable assembly, and the gas-liquid pipeline in the cable body, and separating the gas-liquid pipeline from the cable assembly and the optical cable assembly by arranging a partition structure, the transmission of electric energy, liquid or gaseous hydrogen energy / ammonia energy, and optical signals can be realized in the same submarine cable, thereby improving the integration of the submarine cable and reducing the transmission cost of electric energy, liquid or gaseous hydrogen energy / ammonia energy, and optical signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present application or the technical solutions in 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0064] Figure 1 A schematic diagram of the structure of a submarine cable provided in an embodiment of the present application;

[0065] Figure 2 for Figure 1 A schematic diagram of the structure of the partition structure in FIG.

[0066] Figure 3 for Figure 1 Schematic diagram of the structure of the return cable;

[0067] Figure 4 for Figure 1 Schematic diagram of the structure of the optical cable assembly.

[0068] Description of reference numerals:

[0069] 100-cable body;

[0070] 110 - first accommodating chamber; 120 - second accommodating chamber; 130 - partition structure;

[0071] 140-first interval; 150-second interval;

[0072] 131 - first groove; 132 - second groove; 133 - third groove; 134 - fourth groove;

[0073] 135-first fan-shaped structure; 136-second fan-shaped structure;

[0074] 200-cable assembly;

[0075] 210-positive cable; 220-negative cable; 230-return cable;

[0076] 211 - first core; 212 - first shielding layer; 213 - first protective layer;

[0077] 214 - first insulating layer; 215 - second shielding layer; 216 - first water-blocking layer;

[0078] 217-third shielding layer;

[0079] 221-second core; 222-fourth shielding layer; 223-second protective layer;

[0080] 224 - second insulating layer; 225 - fifth shielding layer; 226 - second water-blocking layer;

[0081] 227-sixth shielding layer;

[0082] 231-third core; 232-seventh shielding layer; 233-third protective layer;

[0083] 234 - third insulating layer; 235 - eighth shielding layer; 236 - third water-blocking layer;

[0084] 237-Ninth Shielding Layer;

[0085] 300-fiber optic cable assembly;

[0086] 310-fourth core; 320-second reinforcement layer; 330-fourth insulation layer;

[0087] 340-first armor layer; 350-fourth water-blocking layer; 360-fifth insulation layer;

[0088] 400-gas and liquid pipelines;

[0089] 410-gas and liquid pipeline; 420-first corrosion-resistant layer; 430-first strengthening layer;

[0090] 440-second corrosion resistant layer;

[0091] 450-first anti-permeability layer;

[0092] 500-protection mechanism;

[0093] 510-wear-resistant layer; 520-second armor layer; 530-third reinforcement layer;

[0094] 600-filling structure. DETAILED DESCRIPTION

[0095] As described in the background, conventional submarine cables are unable to transmit electricity, liquid or gaseous hydrogen / ammonia, and optical signals within the same cable. This problem arises because most existing submarine cables can only transmit one of these signals; there is no design that can integrate all three within a single cable.

[0096] In response to the above technical problems, an embodiment of the present application provides a submarine cable, which includes a cable body, a cable assembly, an optical cable assembly, a gas-liquid pipeline, and a protective mechanism. The cable body is provided with a first accommodating cavity, a second accommodating cavity, and a partition structure. The first accommodating cavity and the second accommodating cavity are isolated from each other by the partition structure. The gas-liquid pipeline is arranged in the first accommodating cavity, the cable assembly and the optical cable assembly are arranged in the second accommodating cavity, and the protective mechanism is arranged on the outside of the cable body. By arranging the cable assembly, the optical cable assembly, and the gas-liquid pipeline in the cable body at the same time, and separating the gas-liquid pipeline from the cable assembly and the optical cable assembly by arranging a partition structure, the transmission of electric energy, liquid or gaseous hydrogen energy / ammonia energy, and optical signals can be realized in the same submarine cable, thereby improving the integration of the submarine cable and reducing the transmission cost of electric energy, liquid or gaseous hydrogen energy / ammonia energy, and optical signals.

[0097] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0098] refer to Figure 1 The present invention provides a submarine cable, which may include a cable body 100, a cable assembly 200, an optical cable assembly 300, a gas-liquid pipeline 400, and a protective mechanism 500. The cable assembly 200 is used to transmit electrical energy, the optical cable assembly 300 is used to transmit optical signals, and the gas-liquid pipeline 400 can be used to transmit liquid or gaseous hydrogen or ammonia. The gas-liquid pipeline 400 can also be used to transmit gaseous hydrogen or ammonia.

[0099] The cable body 100 includes a first accommodating cavity 110, a second accommodating cavity 120, and a partitioning structure 130. The first accommodating cavity 110 and the second accommodating cavity 120 are separated from each other by the partitioning structure 130. The gas-liquid pipeline 400 is disposed in the first accommodating cavity 110, and the cable assembly 200 and the optical cable assembly 300 are disposed in the second accommodating cavity 120. By using the partitioning structure 130 to separate the gas-liquid pipeline 400 from the cable assembly 200, the mutual compression and collision between the cable assembly 200 and the gas-liquid pipeline 400 can be reduced, thereby reducing the probability of damage to the gas-liquid pipeline 400. Similarly, separating the gas-liquid pipeline 400 from the optical cable assembly 300 can reduce the mutual collision between the optical cable assembly 300 and the gas-liquid pipeline 400, thereby reducing the probability of damage to the gas-liquid pipeline 400.

[0100] In some embodiments, if liquid hydrogen energy or liquid ammonia energy is transported in the gas-liquid pipeline 400, the partition structure 130 may be a heat-insulating partition structure 130. By setting the partition structure 130 as a heat-insulating partition structure 130, the high temperature generated by the cable assembly 200 and the optical cable assembly 300 during operation can be reduced from being transferred to the gas-liquid pipeline 400, thereby reducing the probability of the liquid hydrogen or liquid ammonia transported in the gas-liquid pipeline 400 being vaporized due to high temperature, thereby reducing the power consumption of transporting liquid hydrogen or liquid ammonia, and further reducing the transportation cost of liquid hydrogen or liquid ammonia.

[0101] In some embodiments, the material of the partition structure 130 can be polyethylene, polypropylene, or an extruded material with thermal insulation properties.

[0102] refer to Figure 1 The protective mechanism 500 is arranged on the outside of the cable body 100. By arranging the protective structure on the outside of the cable body 100, the cable body 100 can be protected to avoid direct collision between the cable body 100 and the external environment, thereby improving the service life of the cable body 100 and thus improving the service life of the submarine cable.

[0103] An embodiment of the present application provides a submarine cable, comprising a cable body 100, a cable assembly 200, an optical cable assembly 300, a gas-liquid pipeline 400, and a protective mechanism 500. The cable body 100 has a first accommodating cavity 110, a second accommodating cavity 120, and a partition structure 130 therein. The first accommodating cavity 110 and the second accommodating cavity 120 are isolated from each other by the partition structure 130. The gas-liquid pipeline 400 is disposed in the first accommodating cavity 110, the cable assembly 200 and the optical cable assembly 300 are disposed in the second accommodating cavity 120, and the protective mechanism 500 is disposed outside the cable body 100. By simultaneously arranging the cable assembly 200, the optical cable assembly 300 and the gas-liquid pipeline 400 in the cable body 100, and separating the gas-liquid pipeline 400 from the cable assembly 200 and the optical cable assembly 300 by arranging the partition structure 130, the transmission of electric energy, liquid or gaseous hydrogen energy / ammonia energy and optical signals can be realized in the same submarine cable, thereby improving the integration of the submarine cable and reducing the transmission cost of electric energy, liquid or gaseous hydrogen energy / ammonia energy and optical signals.

[0104] refer to Figure 1 and Figure 2 The partition structure 130 has a first groove 131 on the side facing the gas-liquid pipeline 400. The first groove 131 and the inner wall surface of the cable body 100 together form the first accommodating chamber 110. The gas-liquid pipeline 400 is disposed in the first groove 131, and a portion of the outer wall of the gas-liquid pipeline 400 is in contact with the groove wall of the first groove 131. The outer surface of the gas-liquid pipeline 400 is an arc surface, and the first groove 131 can be an arc-shaped groove corresponding to the arc surface. This can improve the fit between the gas-liquid pipeline 400 and the first groove 131 when the gas-liquid pipeline 400 is disposed in the first groove 131, increase the contact area between the gas-liquid pipeline 400 and the first groove 131, thereby improving the installation stability of the gas-liquid pipeline 400 in the first groove 131, and further improve the installation stability of the gas-liquid pipeline 400 in the cable body 100.

[0105] In some embodiments, the size of the notch of the first groove 131 is smaller than the diameter of the gas-liquid pipeline 400 , thereby preventing the gas-liquid pipeline 400 from shaking in the first groove 131 and further improving the installation stability of the gas-liquid pipeline 400 .

[0106] refer to Figure 1 and Figure 2 The cable assembly 200 may include a positive cable 210 and a negative cable 220. The positive cable and the negative cable abut against each other, and the sides of the positive cable and the negative cable facing away from each other abut against the inner wall surface of the cable body 100. The partition structure has a second groove 132 and a third groove 133 on the side facing away from the first accommodating cavity 110. The second groove 132, the third groove 133 and the inner wall surface of the cable body 100 together form the second accommodating cavity 120.

[0107] The positive cable is arranged in the second groove 132, and part of the outer side wall of the positive cable is in contact with the groove wall of the second groove 132. The outer surface of the positive cable is a circular arc surface, and the second groove 132 can be an arc-shaped groove corresponding to the circular arc surface, so that when the positive cable is arranged in the second groove 132, the contact area between the positive cable and the second groove 132 is increased, thereby improving the installation stability of the positive cable in the second groove 132.

[0108] The negative cable is disposed in the third groove 133, with a portion of the outer wall of the negative cable being in contact with the wall of the third groove 133. The outer surface of the negative cable is an arcuate surface, and the third groove 133 may be an arc-shaped groove corresponding to the arcuate surface. This increases the contact area between the negative cable and the third groove 133 when the negative cable is disposed in the third groove 133, thereby improving the installation stability of the negative cable in the third groove 133.

[0109] In some embodiments, the outer diameter of the gas-liquid pipeline 400 may be less than or equal to the outer diameter of the positive cable 210 or the negative cable 220. Specifically, the difference between the outer diameter of the positive cable 210 and the outer diameter of the gas-liquid pipeline 400 is greater than or equal to 5 mm and less than or equal to 10 mm.

[0110] refer to Figure 1 and Figure 3 In one possible implementation, the cable assembly 200 may further include a return cable 230. When the positive cable 210 fails to work, the return cable 230 can serve as the positive cable 210 to transmit electrical energy, or when the negative cable 220 fails to work, the return cable 230 can serve as the negative cable 220 to transmit electrical energy.

[0111] The positive cable 210 and the negative cable 220 abut against each other, with a first gap 140 defined between the positive cable 210, the negative cable 220, and the inner wall of the cable body 100. The return cable 230 is disposed within the first gap 140. The return cable 230 is held within the first gap 140 by the outer walls of the positive and negative cables 210, 220, and the inner wall of the cable body 100, thereby improving the installation stability of the return cable 230 and reducing the probability of radial movement of the return cable 230.

[0112] refer to Figure 1In one possible implementation, a filling structure 600 is further provided in the first compartment 140. The filling structure 600 is provided between the return cable 230, the positive cable 210 and the inner wall surface of the cable body 100. By providing the filling structure 600, the displacement of the negative cable 220 and the return cable 230 in the second accommodating cavity 120 can be further limited, thereby further improving the installation stability of the positive cable 210, the negative cable 220 and the return cable 230 in the second accommodating cavity 120.

[0113] In a specific implementation, the filling structure 600 can not only be set between the return cable 230, the positive cable 210 and the inner wall surface of the cable body 100, but also between the return cable 230, the negative cable 220 and the inner wall surface of the cable body 100.

[0114] In some embodiments, the filling structure 600 may be a plurality of filling bars, the extension direction of the filling bars being the same as the extension direction of the submarine cable, and the material of the filling bars may be polyethylene, polypropylene or other extruded materials.

[0115] refer to Figure 1 In some embodiments, a second space 150 is provided between the positive cable 210, the negative cable 220, and the partition structure 130. The optical cable assembly 300 is disposed in the second space 150, and the optical cable assembly 300 is respectively in contact with the positive cable 210, the negative cable 220, and the partition structure 130.

[0116] refer to Figure 1 and Figure 2 In one possible implementation, the partition structure 130 may further include a fourth groove 134, which is disposed between the second groove 132 and the third groove 133; the fourth groove 134, the positive cable 210, and the negative cable 220 together form a second compartment 150, and the optical cable assembly 300 is disposed in the fourth groove 134, with a portion of the outer wall of the optical cable assembly 300 being in contact with the groove wall of the fourth groove 134, thereby improving the installation stability of the optical cable assembly 300 in the second compartment 150.

[0117] refer to Figure 2In one possible implementation, the separator structure 130 may include a first fan-shaped structure 135 and a second fan-shaped structure 136 that are symmetrical and interconnected. The first fan-shaped structure 135 has a first curved edge connected to the inner wall surface of the cable body 100 facing away from the second fan-shaped structure 136. The second fan-shaped structure 136 has a second curved edge connected to the inner wall surface of the cable body 100 facing away from the first fan-shaped structure 135. By making the first fan-shaped structure 135 and the second fan-shaped structure 136 of the separator structure 130 abut against the inner wall of the cable body 100, the fit between the separator structure 130 and the inner surface of the cable body 100 can be improved, and the contact area between the separator structure 130 and the inner wall surface of the cable body 100 can be increased. The separator structure 130 can also support the cable body 100, thereby improving the support stability of the submarine cable.

[0118] refer to Figure 1 The positive cable 210 may include a first wire core 211, a first shielding layer 212 and a first protective layer 213. The first shielding layer 212 is arranged on the outside of the first wire core 211, and the first protective layer 213 is arranged on the outside of the first shielding layer 212. The first protective layer 213 is arranged in the second groove 132, and the first protective layer 213 abuts against the inner wall surface of the cable body 100.

[0119] In a specific implementation, the first core 211 may include multiple core wires, which may include multiple layers. The innermost core wire may be a single core wire, and the outer core wires are twisted together and wrapped around the outer surface of the inner core wire. A water-blocking structural layer may be provided between the two layers of core wires. The water-blocking structural layer may be a water-blocking powder, a water-blocking tape, a water-blocking yarn, or a water-blocking adhesive. The core wire may be made of a conductive metal material, such as copper, aluminum, or an aluminum alloy.

[0120] The material of the first shielding layer 212 can be an extruded semi-conductive shielding material, or a combination of a wrapped semi-conductive tape and an extruded semi-conductive shielding material. The material of the first protective layer 213 can be an insulating polyethylene or a semi-conductive polyethylene material.

[0121] In some embodiments, the positive cable 210 may further include a first insulating layer 214 and a second shielding layer 215. The first insulating layer 214 is disposed outside the first shielding layer 212, and the second shielding layer 215 is disposed outside the first insulating layer 214. The first insulating layer 214 is disposed between the first shielding layer 212 and the second shielding layer 215, and the second shielding layer 215 is disposed between the first protective layer 213 and the first insulating layer 214. In a specific implementation, the material of the first insulating layer 214 may be extruded cross-linked polyethylene or polypropylene insulation material. The material of the second shielding layer 215 may be the same as that of the first shielding layer 212.

[0122] In some embodiments, the positive cable 210 may further include a first water-blocking layer 216 and a third shielding layer 217. The first water-blocking layer 216 is disposed outside the second shielding layer 215, and the third shielding layer 217 is disposed outside the first water-blocking layer 216. The outer side of the third shielding layer 217 is connected to the first protective layer 213, and the first water-blocking layer 216 is disposed between the third shielding layer 217 and the second shielding layer 215. In a specific implementation, the material of the first water layer may be wrapped semi-conductive water-resistant tape. The material of the third shielding layer 217 may be extruded alloy lead, wrapped copper wire, or wrapped copper tape.

[0123] refer to Figure 1 The negative cable 220 may include a second core 221, a fourth shielding layer 222, and a second protective layer 223. The fourth shielding layer 222 is disposed outside the second core 221, and the second protective layer 223 is disposed outside the fourth shielding layer 222. The second protective layer 223 is disposed within the third groove 133, and the second protective layer 223 abuts against the inner wall of the cable body 100. In some examples, the second core 221 may be disposed in the same manner as the first core 211. The fourth shielding layer 222 may be made of the same material as the first shielding layer 212, and the second protective layer 223 may be made of the same material as the first protective layer 213.

[0124] Negative cable 220 may further include a second insulating layer 224 and a fifth shielding layer 225. Second insulating layer 224 is disposed outside fourth shielding layer 222, and fifth shielding layer 225 is disposed outside first insulating layer 214. Second insulating layer 224 is disposed between fourth shielding layer 222 and fifth shielding layer 225, and fifth shielding layer 225 is disposed between second protective layer 223 and second insulating layer 224. In some examples, second insulating layer 224 can be made of the same material as first insulating layer 214, and fifth shielding layer 225 can be made of the same material as first shielding layer 212.

[0125] The negative cable 220 may further include a second water-blocking layer 226 and a sixth shielding layer 227. The second water-blocking layer 226 is disposed outside the fifth shielding layer 225, and the sixth shielding layer 227 is disposed outside the second water-blocking layer 226. The outer side of the sixth shielding layer 227 is connected to the second protective layer 223, and the second water-blocking layer 226 is disposed between the sixth shielding layer 227 and the fifth shielding layer 225. In some examples, the second water layer can be made of the same material as the first water layer, and the sixth shielding layer 227 can also be made of the same material as the first shielding layer 212.

[0126] refer to Figure 1 and Figure 3In some embodiments, the return cable 230 may include a third core 231, a seventh shielding layer 232, and a third protective layer 233. The seventh shielding layer 232 is disposed outside the third core 231, and the third protective layer 233 is disposed outside the seventh shielding layer 232. The third protective layer 233 abuts the first protective layer 213 and the second protective layer 223, and the third protective layer 233 abuts the inner wall surface of the cable body 100. In some examples, the third core 231 may be disposed in the same manner as the first core 211, the seventh shielding layer 232 may be made of the same material as the first shielding layer 212, and the third protective layer 233 may be made of the same material as the first protective layer 213.

[0127] The return cable 230 may further include a third insulating layer 234 and an eighth shielding layer 235. The third insulating layer 234 is disposed outside the seventh shielding layer 232, the eighth shielding layer 235 is disposed outside the third insulating layer 234, and the eighth shielding layer 235 is disposed between the third protective layer 233 and the third insulating layer 234. In some examples, the third insulating layer 234 may be made of the same material as the first insulating layer 214, and the eighth shielding layer 235 may be made of the same material as the first shielding layer 212.

[0128] The return cable 230 may further include a third water-blocking layer 236 and a ninth shielding layer 237. The third water-blocking layer 236 is disposed outside the eighth shielding layer 235, and the ninth shielding layer 237 is disposed outside the third water-blocking layer 236. The outer side of the ninth shielding layer 237 is connected to the third protective layer 233. In some examples, the third water layer may be made of the same material as the first water layer, and the ninth shielding layer 237 may be made of the same material as the first shielding layer 212.

[0129] refer to Figure 1 In one possible implementation, the gas-liquid pipeline 400 may include a gas-liquid pipeline 410, a first corrosion-resistant layer 420, and a first reinforcement layer 430. The first corrosion-resistant layer 420 is disposed on the outside of the gas-liquid pipeline 410, and the first reinforcement layer 430 is disposed on the outside of the first corrosion-resistant layer 420. The first corrosion-resistant layer 420 is disposed between the first reinforcement layer 430 and the gas-liquid pipeline 410. By providing the first corrosion-resistant layer 420, the gas-liquid pipeline 400 can be resistant to corrosion by hydrogen or ammonia, thereby improving the corrosion resistance of the gas-liquid pipeline 400. By providing the first reinforcement layer 430, the overall strength, rigidity, creep resistance, wear resistance, and low-temperature resistance of the gas-liquid pipeline 400 can be improved. In some embodiments, the material of the first corrosion-resistant layer 420 may be composite polyethylene. The material of the first reinforcement layer 430 may be reinforced aramid fiber.

[0130] The gas-liquid pipeline 400 may further include a second corrosion-resistant layer 440, which is disposed outside the first strengthening layer 430 and within the third groove 133. The provision of the second corrosion-resistant layer 440 further improves the corrosion resistance of the gas-liquid pipeline 400. The second corrosion-resistant layer 440 may be made of the same material as the first corrosion-resistant layer 420.

[0131] In some embodiments, a first anti-permeation layer 450 is provided on the inner surface of the gas-liquid pipeline 410, a second anti-permeation layer is provided on the outer surface of the gas-liquid pipeline 410, and a first corrosion-resistant layer 420 is provided on the outer side of the second anti-permeation layer. Providing the first anti-permeation layer 450 on the inner side of the gas-liquid pipeline 410 prevents liquid hydrogen or liquid ammonia in the gas-liquid pipeline 410 from leaking through the wall of the gas-liquid pipeline 410, thereby improving the sealing performance of the gas-liquid pipeline 410. Providing the second anti-permeation layer further improves the anti-permeation performance of the gas-liquid pipeline 410.

[0132] In some embodiments, the first anti-permeation layer 450 and the second anti-permeation layer (not shown) may be made of the same material and configured in the same manner. For example, the first anti-permeation layer 450 and the second anti-permeation layer may both be aluminum-plated layers.

[0133] refer to Figure 1 and Figure 4 The optical cable assembly 300 may include a fourth core 310, a second strength layer 320, a fourth insulation layer 330, and a first armor layer 340. The fourth core 310 can be used for transmitting optical signals. In some embodiments, the fourth core 310 may be an optical fiber, and the fourth core 310 may be composed of multiple optical fibers. The second strength layer 320 is disposed on the outside of the fourth core 310, the fourth insulation layer 330 is disposed on the outside of the second strength layer 320, the first armor layer 340 is disposed on the outside of the fourth insulation layer 330, and the fourth insulation layer 330 is disposed between the second strength layer 320 and the first armor layer 340.

[0134] The second reinforcement layer 320 may be a stainless steel tube. Specifically, the fourth core 310 is disposed within the stainless steel tube. The second reinforcement layer 320 protects the fourth core 310 from bending or breaking. In some embodiments, the fourth insulation layer 330 may be made of insulating polyethylene or semi-conductive polyethylene. The first armor layer 340 may be formed by twisting galvanized high-carbon steel wire.

[0135] The optical cable assembly 300 may further include a fourth water-blocking layer 350 and a fifth insulating layer 360. The fourth water-blocking layer 350 is disposed outside the first armor layer 340, and the fifth insulating layer 360 is disposed outside the fourth water-blocking layer 350. The fourth water-blocking layer 350 is disposed between the fifth insulating layer 360 and the first armor layer 340, and the fifth insulating layer 360 is disposed within the first groove 131. In some embodiments, the fourth water-blocking layer 350 may be made of a non-woven fabric, an insulating water-blocking tape, or a semi-conductive water-blocking tape. The fifth insulating layer 360 may be made of the same material as the fourth insulating layer 330.

[0136] refer to Figure 1 The protective mechanism 500 may include a wear-resistant layer 510, a second armor layer 520, and a third reinforcement layer 530. The wear-resistant layer 510 is disposed on the outside of the cable body 100, between the second armor layer 520 and the cable body 100. The second armor layer 520 is disposed on the outside of the wear-resistant layer 510. The wear-resistant layer 510 prevents direct contact between the second armor layer 520 and the wall surface of the cable body 100, thereby reducing friction loss between the second armor layer 520 and the cable body 100. The wall surface of the cable body 100 may be a wrapped non-woven fabric, a fabric tape, or other tape. The wear-resistant layer 510 may be a polypropylene rope, extruded polyethylene, or extruded polyurethane disposed on the outside of the cable body 100. The second armor layer 520 may be a metal wire or a non-metallic wire wrapped around the wear-resistant layer 510. For example, the second armor layer 520 may be a steel wire or a copper wire wrapped around the wear-resistant layer 510. In some embodiments, the second armor layer 520 may have multiple layers, which can further improve the protection performance of the cable body 100 .

[0137] The third reinforcement layer 530 is disposed outside the second armor layer 520, which is disposed between the third reinforcement layer 530 and the wear-resistant layer 510. The third reinforcement layer 530 can have multiple layers, thereby increasing the overall strength and rigidity of the submarine cable. The third reinforcement layer 530 can be made of a polypropylene rope, extruded polyethylene, or extruded polyurethane wrapped around the second armor layer 520.

[0138] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0139] It should be noted that phrases such as "in a specific implementation," "in some embodiments," "in this embodiment," and "exemplarily" mentioned in the specification indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0140] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0141] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0142] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A submarine cable, characterized in that: Including cable body, cable assembly, optical cable assembly, gas and liquid pipelines and protective mechanism; The cable body has a first accommodating cavity, a second accommodating cavity and a partition structure. The first accommodating cavity and the second accommodating cavity are isolated from each other by the partition structure. The gas-liquid pipeline is arranged in the first accommodating cavity, and the cable assembly and the optical cable assembly are arranged in the second accommodating cavity. The gas-liquid pipeline is used to transport liquid or gaseous hydrogen energy or ammonia energy. When liquid hydrogen energy or liquid ammonia energy is transported in the gas-liquid pipeline, the partition structure is a heat-insulating partition structure. The protective mechanism is arranged on the outside of the cable body; The gas-liquid pipeline includes a gas-liquid pipeline, a first corrosion-resistant layer and a first strengthening layer; The first corrosion-resistant layer is arranged on the outside of the gas-liquid pipeline, the first strengthening layer is arranged on the outside of the first corrosion-resistant layer, and the first corrosion-resistant layer is arranged between the first strengthening layer and the gas-liquid pipeline; And / or, the inner surface of the gas-liquid pipeline is provided with a first anti-permeation layer, the outer surface of the gas-liquid pipeline is provided with a second anti-permeation layer, and the first corrosion-resistant layer is provided on the outer side of the second anti-permeation layer; And / or, the gas-liquid pipeline further comprises a second corrosion-resistant layer; The second corrosion-resistant layer is arranged on the outer side of the first strengthening layer.

2. The submarine cable according to claim 1, characterized in that The partition structure has a first groove on a side facing the gas-liquid pipeline, and the first groove and the inner wall surface of the cable body together form a first accommodating cavity; The gas-liquid pipeline is arranged in the first groove, and part of the outer wall of the gas-liquid pipeline is in contact with the groove wall of the first groove; And / or, the size of the notch of the first groove is smaller than the diameter of the gas-liquid pipeline.

3. The submarine cable according to claim 2, characterized in that: The cable assembly includes a positive cable and a negative cable; The partition structure has a second groove and a third groove on a side facing away from the first accommodating cavity, and the second groove, the third groove and the inner wall surface of the cable body together form a second accommodating cavity; The positive cable is arranged in the second groove, and a portion of the outer wall of the positive cable is in contact with the groove wall of the second groove; The negative cable is disposed in the third groove, and a portion of the outer side wall of the negative cable is in contact with the groove wall of the third groove.

4. The submarine cable according to claim 3, characterized in that The cable assembly also includes a return cable; The positive cable and the negative cable are against each other, a first gap is defined between the positive cable, the negative cable and the inner wall of the cable body, and the return cable is disposed in the first gap; The return cable is held in the first space by the outer wall surfaces of the positive cable and the negative cable, and the inner wall surface of the cable body.

5. The submarine cable according to claim 4, characterized in that: A filling structure is further provided in the first space, and the filling structure is provided between the return cable, the positive cable and the inner wall surface of the cable body; And / or the filling structure is arranged between the return cable, the negative cable and the inner wall surface of the cable body.

6. The submarine cable according to claim 5, characterized in that There is also a second gap between the positive cable, the negative cable and the partition structure; The optical cable assembly is disposed in the second compartment, and the optical cable assembly abuts against the positive cable, the negative cable, and the partition structure, respectively.

7. The submarine cable according to claim 6, characterized in that: The partition structure further includes a fourth groove, which is disposed between the second groove and the third groove; the fourth groove, the positive cable, and the negative cable together form the second partition; The optical cable assembly is disposed in the fourth groove, and a portion of the outer sidewall of the optical cable assembly is in contact with the groove wall of the fourth groove.

8. The submarine cable according to claim 7, characterized in that: The separation structure includes a first fan-shaped structure and a second fan-shaped structure that are symmetrical and connected to each other, the first fan-shaped structure having a first arc-shaped edge, and the first arc-shaped edge is connected to the inner wall surface of the cable body facing away from the second fan-shaped structure; The second fan-shaped structure has a second arc-shaped edge, and the second arc-shaped edge is connected to the inner wall surface of the cable body facing away from the first fan-shaped structure.

9. The submarine cable according to any one of claims 4 to 8, characterized in that: The positive cable comprises a first core, a first shielding layer and a first protective layer; The first shielding layer is arranged on the outside of the first core, and the first protective layer is arranged on the outside of the first shielding layer; The first protective layer is disposed in the second groove, and the first protective layer abuts against the inner wall surface of the cable body; And / or, the positive cable further comprises a first insulating layer and a second shielding layer; The first insulating layer is arranged on the outside of the first shielding layer, and the second shielding layer is arranged on the outside of the first insulating layer; the first insulating layer is arranged between the first shielding layer and the second shielding layer, and the second shielding layer is arranged between the first protective layer and the first insulating layer; And / or, the positive cable further comprises a first water-blocking layer and a third shielding layer; The first water-blocking layer is arranged on the outer side of the second shielding layer, the third shielding layer is arranged on the outer side of the first water-blocking layer, and the outer side of the third shielding layer is connected to the first protective layer; The first water-blocking layer is disposed between the third shielding layer and the second shielding layer.

10. The submarine cable according to claim 9, characterized in that: The negative cable includes a second core, a fourth shielding layer and a second protective layer; The fourth shielding layer is arranged on the outside of the second core, and the second protective layer is arranged on the outside of the fourth shielding layer; The second protective layer is disposed in the third groove, and the second protective layer abuts against the inner wall surface of the cable body; And / or, the negative cable further comprises a second insulating layer and a fifth shielding layer; The second insulating layer is arranged on the outside of the fourth shielding layer, and the fifth shielding layer is arranged on the outside of the first insulating layer; the second insulating layer is arranged between the fourth shielding layer and the fifth shielding layer, and the fifth shielding layer is arranged between the second protective layer and the second insulating layer; And / or, the negative cable further comprises a second water-blocking layer and a sixth shielding layer; The second water-blocking layer is arranged on the outer side of the fifth shielding layer, the sixth shielding layer is arranged on the outer side of the second water-blocking layer, and the outer side of the sixth shielding layer is connected to the second protective layer; The second water-blocking layer is disposed between the sixth shielding layer and the fifth shielding layer.

11. The submarine cable according to claim 10, characterized in that: The return cable comprises a third core, a seventh shielding layer and a third protective layer; The seventh shielding layer is arranged on the outside of the third core, the third protective layer is arranged on the outside of the seventh shielding layer, the third protective layer abuts against the first protective layer and the second protective layer, and the third protective layer abuts against the inner wall surface of the cable body; And / or, the return cable further comprises a third insulation layer and an eighth shielding layer; The third insulating layer is arranged on the outer side of the seventh shielding layer, the eighth shielding layer is arranged on the outer side of the third insulating layer, and the eighth shielding layer is arranged between the third protective layer and the third insulating layer; And / or, the return cable further comprises a third water-blocking layer and a ninth shielding layer; The third water-blocking layer is arranged on the outer side of the eighth shielding layer, the ninth shielding layer is arranged on the outer side of the third water-blocking layer, and the outer side of the ninth shielding layer is connected to the third protective layer.

12. The submarine cable according to claim 11, characterized in that The second corrosion-resistant layer is disposed in the third groove.

13. The submarine cable according to claim 12, characterized in that: The optical cable assembly includes a fourth core, a second reinforcement layer, a fourth insulation layer, and a first armor layer; The second strengthening layer is arranged on the outside of the fourth core, the fourth insulating layer is arranged on the outside of the second strengthening layer, the first armor layer is arranged on the outside of the fourth insulating layer, and the fourth insulating layer is arranged between the second strengthening layer and the first armor layer; And / or, the optical cable assembly further comprises a fourth water-blocking layer and a fifth insulating layer; The fourth water-blocking layer is arranged on the outside of the first armor layer, the fifth insulation layer is arranged on the outside of the fourth water-blocking layer, the fourth water-blocking layer is arranged between the fifth insulation layer and the first armor layer, and the fifth insulation layer is arranged in the first groove.

14. The submarine cable according to claim 13, characterized in that The protective mechanism includes a wear-resistant layer, a second armor layer and a third reinforcement layer; The wear-resistant layer is arranged on the outside of the cable body, and the wear-resistant layer is located between the second armor layer and the cable body; The second armor layer is arranged on the outer side of the wear-resistant layer, the third reinforcement layer is arranged on the outer side of the second armor layer, and the second armor layer is arranged between the third reinforcement layer and the wear-resistant layer.

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