Subsea compression resistant cable

Abstract

The application discloses a kind of seabed compression-resistant cable, including reinforcing outer skin layer, and the reinforcing outer skin layer outer wall is sleeved with fixing ring.The application is basically fixed to cable by fixing ring and plug block, let plug block be inserted into sand, and stable block is placed downward, close to sand, if cable is offset and rolls, stable block can be quickly reset after external force disappears, prevent offset and rotation condition, if simple parallel offset occurs, plug block is inserted into sand vertically, can effectively prevent cable offset, and due to instantaneous impact caused by seawater flow, this instantaneous impact will cause pressure to suddenly increase, pressure will push sliding plug to be moved inward, sliding plug inward push will extrude first sealing layer, to further extrude lubricating oil, let fixed cone block extend outward, further inserted into sand, improve the fixing effect of cable this moment, effectively improve the anti-offset property of cable moment.

Description

Technical Field

[0001] This invention relates to the field of submarine cables, and in particular to a submarine pressure-resistant cable. Background Technology

[0002] Submarine cables are cables wrapped in insulating materials and laid on the seabed for telecommunications transmission. Submarine cables are divided into submarine communication cables and submarine power cables.

[0003] Secondly, submarine cables are half-laid on the seabed. Due to the large mass and weight of the cables themselves, they are less affected by seawater flow. However, if they are located on the seabed for a long time, the cable will still be partially misaligned due to the seawater flow. This misalignment can be either parallel or partial rotation. In this case, the cable is subjected to both tension and torque caused by the misalignment. Tension and torque will not cause damage in the short term, but as the tension increases and continues, and the torque intensifies, the wear of the internal materials of the cable will gradually increase. Over time, this will affect the overall lifespan of the cable. Therefore, it is necessary to mitigate the above two types of misalignment in order to improve the service life of the cable.

[0004] Therefore, we propose a submarine pressure-resistant cable to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a submarine pressure-resistant cable to solve the two types of cable misalignment caused by long-term seawater flow on the seabed, as mentioned in the background art, and to address the issues of mitigating misalignment and improving cable lifespan. This invention provides a significantly different solution from existing technologies, addressing the problem that existing solutions are too simplistic.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A submarine pressure-resistant cable includes a reinforcing outer sheath, a fixing ring fitted onto the outer wall of the reinforcing outer sheath, inserts evenly distributed on the outer wall of the fixing ring, a stabilizing block fixedly connected to the inner wall of the fixing ring, the stabilizing block occupying half the volume of the inner wall of the fixing ring, a sliding opening installed on the surface of the fixing ring, a sliding plug slidably connected to the inner wall of the sliding opening, a first sealing layer glued to the sliding plug on one side of the inner wall of the fixing ring, a fixing cone slidably connected to the surface of the fixing ring through an opening, a second sealing layer glued to the fixing cone on one side of the inner wall of the fixing ring, and lubricating oil filling the inner wall of the fixing ring.

[0007] In a further embodiment, both the first sealing layer and the second sealing layer are bonded to the inner wall of the retaining ring.

[0008] In a further embodiment, both the insert block and the fixing cone block are quadrangular pyramidal structures, and through holes are provided on the front and rear sides of the insert block.

[0009] In a further embodiment, a shielding layer is provided on the inner side of the reinforcing outer skin layer, a waterproof layer is provided on the inner side of the shielding layer, a corrosion-resistant layer is provided on the inner side of the waterproof layer, a filling layer is provided on the inner side of the corrosion-resistant layer, and a wire core and a reinforcing rib are respectively provided on the inner side of the filling layer.

[0010] In a further embodiment, an oil pipe is provided on the inner wall of the stabilizing block, and the oil pipe is movably connected to the fixed cone block.

[0011] In a further embodiment, the sliding opening is located on the side of the fixing ring away from the stabilizing block.

[0012] Compared with the prior art, the beneficial effects of the present invention are: This application achieves basic cable fixation through a fixing ring and a plug, allowing the plug to be inserted into the sand. The stabilizing block is placed downwards, close to the sand. If the cable shifts and rolls, the stabilizing block can quickly reset using the principle of a self-righting toy after the external force disappears, preventing shifting and rotation. In the case of simple parallel shift, the plug's vertical insertion into the sand effectively prevents cable shift. Furthermore, the instantaneous impact of seawater flow causes a sudden increase in pressure, which pushes the sliding plug inwards. This inward movement of the sliding plug squeezes the first sealing layer, further squeezing the lubricating oil and causing the fixing cone to extend outwards and further insert into the sand, improving the cable's instantaneous fixation effect and effectively enhancing its instantaneous resistance to shifting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of a submarine pressure-resistant cable.

[0014] Figure 2 This is a schematic diagram of the cross-section of a submarine pressure-resistant cable.

[0015] Figure 3 For submarine pressure-resistant cables Figure 2 A magnified structural diagram of part A in the middle.

[0016] In the diagram: 1. Reinforced outer sheath; 2. Shielding layer; 3. Waterproof layer; 4. Corrosion-resistant layer; 5. Filler layer; 6. Core wire; 7. Reinforcing rib; 8. Fixing ring; 9. Stabilizing block; 901. Oil pipe; 10. Insert block; 11. Sliding port; 12. Sliding plug; 1201. First sealing layer; 13. Fixing cone block; 1301. Second sealing layer. Detailed Implementation

[0017] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-3 In this invention, a submarine pressure-resistant cable includes a reinforcing outer sheath 1. A fixing ring 8 is sleeved on the outer wall of the reinforcing outer sheath 1. Insert blocks 10 are evenly distributed on the outer wall of the fixing ring 8. A stabilizing block 9 is fixedly connected to the inner wall of the fixing ring 8, and the stabilizing block 9 occupies half of the volume of the inner wall of the fixing ring 8. A sliding opening 11 is installed on the surface of the fixing ring 8. A sliding plug 12 is slidably connected to the inner wall of the sliding opening 11. A first sealing layer 1201 is glued to the sliding plug 12 on one side of the inner wall of the fixing ring 8. A fixing cone block 13 is slidably connected to the surface of the fixing ring 8 through an opening. A second sealing layer 1301 is glued to the fixing cone block 13 on one side of the inner wall of the fixing ring 8. The inner wall of the fixing ring 8 is filled with lubricating oil.

[0021] Example 1 Please see Figure 1-3In this embodiment of the invention, a submarine pressure-resistant cable is provided, wherein the first sealing layer 1201 and the second sealing layer 1301 are both bonded to the inner wall of the fixing ring 8. The first sealing layer 1201 and the second sealing layer 1301 are both elastic materials, which serve as both springs and seals to prevent oil leakage or water seepage at the edge gaps of the sliding plug 12 and the fixing cone 13.

[0022] Both the insert block 10 and the fixed cone block 13 are quadrangular pyramidal structures. The insert block 10 has through holes on both the front and rear sides. The cone-shaped structure of the insert block 10 makes it easier to insert into the sand. Furthermore, the through holes at the front and rear of the insert block 10 allow water to flow through them, thus preventing the insert block 10 from creating excessive damping.

[0023] Example 2 Please see Figure 1-3 The difference from Embodiment 1 is that: a shielding layer 2 is provided inside the reinforcing outer sheath 1, a waterproof layer 3 is provided inside the shielding layer 2, a corrosion-resistant layer 4 is provided inside the waterproof layer 3, a filling layer 5 is provided inside the corrosion-resistant layer 4, and a wire core 6 and a reinforcing rib 7 are respectively provided inside the filling layer 5. The corrosion-resistant layer 4 can resist corrosion, the waterproof layer 3 can fill cracks or gaps caused by water seepage, the reinforcing outer sheath 1 mainly plays the role of resisting fish bites and insulation, the filling layer 5 can protect the wire core 6, and the reinforcing rib 7 can improve the overall strength of the cable.

[0024] Example 3 Please see Figure 1-3 The difference from Embodiment 1 is that: the inner wall of the stabilizing block 9 is provided with an oil pipe 901, which is movably connected to the fixed cone block 13. The oil pipe 901 mainly facilitates the flow of lubricating oil. Secondly, the outer wall of the stabilizing block 9 is also provided with a notch that is slidably connected to the fixed cone block 13, so that the lubricating oil can push the fixed cone block 13.

[0025] The sliding openings 11 are all located on the side of the fixed ring 8 away from the stabilizing block 9. The sliding openings 11 are mainly located above the fixed ring 8, so that the sliding plug 12 can squeeze out the lubricating oil when sliding.

[0026] The working principle of this invention is: Before the cable is installed on the seabed, the fixing rings 8 need to be evenly and sequentially fitted onto the reinforcing outer sheath 1. The fitting here needs to achieve an interference fit. Alternatively, it can be installed on the outside of the cable during production. When placed on the seabed, the stabilizing block 9 needs to be kept below, and the insert block 10 will be inserted into the sand on the seabed. This fixing ring 8 structure needs to be distributed in multiple places on the cable and needs to be set at equal intervals. When encountering natural impacts from water flow, if the impact force is large, the impacted part of the cable will shift locally. Since the fixing rings 8 and the insert block 10 are not completely fixed, the cable will also rotate slightly during the local shift. When rotating, it will drive the fixing rings 8 to rotate as well. The fixing rings 8 will synchronously drive the stabilizing block 9 to rotate. At the moment the impact disappears, the stabilizing block 9 will push the fixing rings 8 to quickly reset. The cable and fixing rings 8 return to their original state through rotation. Secondly, if the impact from the seabed only causes the cable to deviate, the bottom insert 10 is vertically inserted into the sand. Without a rolling effect, the insert 10 is very securely fixed. Furthermore, the impact force on the cable will cause a temporary increase in pressure. Due to the action of the insert 10, the bottom of the fixing ring 8 is in contact with the sand surface, i.e., at the stabilizing block 9. The upper part of the fixing ring 8 is more affected by the water flow, making it a region with greater pressure. This causes the sliding plug 12 to be pushed inward. Since both the first sealing layer 1201 and the second sealing layer 1301 are made of elastic material, the inward push of the sliding plug 12 will compress the first sealing layer 1201, causing it to squeeze out lubricating oil. The lubricating oil then compresses the fixing cone 13 and the second sealing layer 1301. The fixing cone 13, pushed outward, can be inserted into the sand, improving the sand's fixation effect. Secondly, the shielding layer 2 in this application is made of metal, which can not only shield external interference, but also improve the overall strength of the cable.

[0027] In this application, the stabilizer block 9 can be made of lead as the stabilizing material.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A submarine pressure-resistant cable, characterized in that: The device includes a reinforced outer skin layer (1), a fixed ring (8) sleeved on the outer wall of the reinforced outer skin layer (1), inserts (10) evenly distributed on the outer wall of the fixed ring (8), a stabilizing block (9) fixedly connected to the inner wall of the fixed ring (8), the stabilizing block (9) occupying half of the volume of the inner wall of the fixed ring (8), a sliding opening (11) installed on the surface of the fixed ring (8), a sliding plug (12) slidably connected to the inner wall of the sliding opening (11), a first sealing layer (1201) glued to the side of the inner wall of the fixed ring (8) on the sliding plug (12), a fixed cone block (13) slidably connected to the surface of the fixed ring (8) through an opening, a second sealing layer (1301) glued to the side of the inner wall of the fixed ring (8), and the inner wall of the fixed ring (8) filled with lubricating oil. The inner wall of the stabilizing block (9) is provided with an oil pipe (901), and the oil pipe (901) is movably connected to the fixed cone block (13).

2. The submarine pressure-resistant cable according to claim 1, characterized in that: Both the first sealing layer (1201) and the second sealing layer (1301) are glued to the inner wall of the fixing ring (8).

3. The submarine pressure-resistant cable according to claim 1, characterized in that: Both the insert (10) and the fixed cone (13) are quadrangular pyramidal structures, and the insert (10) has through holes on the front and rear sides.

4. The submarine pressure-resistant cable according to claim 1, characterized in that: The inner side of the reinforced outer skin layer (1) is provided with a shielding layer (2), the inner side of the shielding layer (2) is provided with a waterproof layer (3), the inner side of the waterproof layer (3) is provided with a corrosion-resistant layer (4), the inner side of the corrosion-resistant layer (4) is provided with a filling layer (5), and the inner side of the filling layer (5) is provided with a wire core (6) and a reinforcing rib (7).

5. A submarine pressure-resistant cable according to claim 1, characterized in that: The sliding joints (11) are all located on the side of the fixed ring (8) away from the stabilizing block (9).

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