Seawater-corrosion-resistant water-blocking cable

Abstract

The utility model relates to the technical field of cables, and discloses a seawater-corrosion-resistant water-blocking cable, which comprises an outer sheath, an anti-skid wear strip is arranged on the outer wall of the outer sheath, a water-blocking sealing ring is laid in the outer sheath, an inner sheath is laid on the inner side of the water-blocking sealing ring, an elastic sheet sleeve is fixedly arranged on the outer side of the inner sheath, and the elastic sheet sleeve is fixedly arranged on the outer side of the outer sheath. Elastic sheets are arranged on the inner wall of the elastic sheet sleeve, a waterproof ring is laid on the inner side of the inner sheath, a flame-retardant ring is laid on the inner side of the waterproof ring, and a cable core is arranged on the inner side of the flame-retardant ring. The waterproof sealing ring is arranged at the joint of the outer sheath and the inner sheath, seawater infiltration is avoided, and if the outer sheath is abraded accidentally and seawater enters the outer sheath, the seawater is blocked outside the waterproof sealing ring so as to prevent the seawater from flowing in the whole outer sheath to influence use of the cable body; the cable achieves the purpose of flame retardance, fire is prevented from quickly spreading into the outer sheath, and the waterproof ring also has good anti-corrosion and waterproof effects, so that the practicability of the cable is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a seawater corrosion-resistant and water-blocking cable. Background Art

[0002] A cable is a device for transmitting electric energy or signals. In recent years, with the development of social economy, the power and telecommunications industries have penetrated into daily life. As a carrier for signal transmission, cables have been widely used. Marine cables are wires and cables used for power, lighting, control, and communication transmission in various ships in rivers and seas, as well as inshore or offshore buildings, including marine power cables, marine control cables, marine communication cables, etc.

[0003] Submarine cables are cables wrapped with insulating materials and laid on the seabed for telecommunication transmission. Submarine cables are divided into submarine communication cables and submarine power cables. Submarine communication cables are mainly used for long-distance communication networks, usually in more important occasions such as between remote islands and across-sea military facilities. The laying distance of submarine power cables is much shorter than that of communication cables and is mainly used for connections between land and islands, across rivers or bays, and connections from land to drilling platforms or between drilling platforms.

[0004] However, due to the high salinity in coastal areas, after the cable sinks to the seabed, the surface of the cable will be corroded by seawater due to long-term immersion, reducing the service life of the cable. Moreover, if the cable is worn through, seawater is likely to enter the cable, affecting its normal use and even directly damaging it. Content of the Utility Model

[0005] Technical problems to be solved:

[0006] In view of the deficiencies of the prior art, the utility model provides a seawater corrosion-resistant and water-blocking cable, which has the advantages of seawater corrosion resistance and solves the above problems.

[0007] Technical solutions:

[0008] To achieve the above object, the utility model provides the following technical solution: A seawater corrosion-resistant and water-blocking cable includes an outer sheath, an anti-slip and wear-resistant strip is arranged on the outer wall of the outer sheath, a water-blocking and sealing ring is laid inside the outer sheath, an inner sheath is laid inside the water-blocking and sealing ring, a spring plate sleeve is fixedly arranged on the outer side of the inner sheath, a spring plate is arranged on the inner wall of the spring plate sleeve, a waterproof ring is laid inside the inner sheath, a flame-retardant ring is laid inside the waterproof ring, and a cable core is arranged inside the flame-retardant ring.

[0009] Preferably, the cable core includes a Kevlar filling layer, an insulating layer is arranged inside the Kevlar filling layer, and a power line core conductor is laid inside the insulating layer.

[0010] Preferably, the number of the water-blocking sealing rings is several. The several water-blocking sealing rings are evenly arrayed between the opposite sides of the outer sheath and the inner sheath. The number of the shrapnel sleeves is several. The several shrapnel sleeves surround the outer wall of the inner sheath with the center of the inner sheath as the center and form a group. A group of shrapnel sleeves are interspersed and arrayed on the opposite sides of two adjacent water-blocking sealing rings.

[0011] Preferably, the anti-slip and wear-resistant strips are strip-shaped, and several anti-slip and wear-resistant strips are evenly arrayed on the outer wall of the outer sheath.

[0012] Preferably, the power line core conductor is formed by stranding and then re-stranding multiple strands of Class 5 tinned soft copper wires. The stranding pitch diameter ratio is controlled to be not higher than 12 times, and the pitch diameter of the re-stranding is not higher than 10 times.

[0013] Preferably, the outer sheath is extruded with rubber based on chlorosulfonated polyethylene.

[0014] Preferably, both the insulating layer and the inner sheath are made of rubber based on ethylene propylene diene monomer.

[0015] Beneficial effects:

[0016] Compared with the prior art, the present utility model provides a seawater corrosion-resistant and water-blocking cable, which has the following beneficial effects:

[0017] 1. For this seawater corrosion-resistant and water-blocking cable, by arranging water-blocking sealing rings at the connection between the outer sheath and the inner sheath, seawater infiltration is avoided. If the outer sheath of the cable is accidentally worn through and seawater enters the outer sheath, the seawater will be blocked outside the water-blocking sealing rings at this time, so as to prevent the seawater from flowing through the entire outer sheath and affecting the use of the cable body. Through the setting of the flame retardant ring, the cable achieves the purpose of flame retardancy, avoiding the rapid spread of fire to the inside of the outer sheath, and the waterproof ring also has good anti-corrosion and waterproof effects, thereby enhancing the practicability of the cable;

[0018] 2. For this seawater corrosion-resistant and water-blocking cable, since both the insulating layer and the inner sheath adopt ethylene propylene diene monomer with extremely good non-hygroscopicity, the heat resistance, sunlight resistance, ozone resistance and good insulating electrical performance of the cable are increased. The outer sheath is extruded with chlorosulfonated polyethylene with functions such as ozone resistance, ultraviolet resistance, high-temperature exposure resistance, corrosion resistance, water-blocking and wear resistance, improving the service life of the cable in seawater with strong ultraviolet rays and high corrosion. Brief description of the drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic diagram of the water-blocking sealing ring of the structure of the present utility model;

[0021] Figure 3 is a schematic diagram of the cable core of the present utility model.

[0022] In the figure: 1. Outer sheath; 2. Anti-slip and wear-resistant strip; 3. Water-blocking and sealing ring; 4. Inner sheath; 5. Shrapnel sleeve; 6. Shrapnel; 7. Waterproof ring; 8. Flame-retardant ring; 9. Cable core; 91. Kevlar filling layer; 92. Insulation layer; 93. Power core conductor. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1-2 , a seawater corrosion-resistant and water-blocking cable, comprising an outer sheath 1, the outer sheath 1 is extruded with rubber based on chlorosulfonated polyethylene, an anti-slip and wear-resistant strip 2 is arranged on the outer wall of the outer sheath 1, the anti-slip and wear-resistant strip 2 is strip-shaped, and a plurality of anti-slip and wear-resistant strips 2 are evenly arrayed on the outer wall of the outer sheath 1. A water-blocking and sealing ring 3 is laid inside the outer sheath 1, an inner sheath 4 is laid inside the water-blocking and sealing ring 3, a shrapnel sleeve 5 is fixedly arranged on the outer side of the inner sheath 4, the number of the water-blocking and sealing rings 3 is several, and several water-blocking and sealing rings 3 are evenly arrayed between the opposite sides of the outer sheath 1 and the inner sheath 4. The number of the shrapnel sleeves 5 is several, and several shrapnel sleeves 5 are centered on the center of the inner sheath 4 and surround the outer wall of the inner sheath 4 to form a group. A group of shrapnel sleeves 5 are interspersed and arrayed on the opposite sides of two adjacent water-blocking and sealing rings 3. A shrapnel 6 is arranged on the inner wall of the shrapnel sleeve 5, a waterproof ring 7 is laid inside the inner sheath 4, a flame-retardant ring 8 is laid inside the waterproof ring 7, and a cable core 9 is arranged inside the flame-retardant ring 8.

[0025] According to Figure 3 As shown, the cable core 9 includes a Kevlar filling layer 91, an insulation layer 92 is arranged inside the Kevlar filling layer 91, both the insulation layer 92 and the inner sheath 4 are made of rubber based on ethylene propylene diene monomer. A power core conductor 93 is laid inside the insulation layer 92. The power core conductor 93 is formed by stranding and then re-stranding multiple five-category tinned soft copper wire strands, and the stranding pitch diameter ratio is controlled not to be higher than 12 times, and the pitch diameter of the re-stranding is not higher than 10 times.

[0026] The cable core 9 is composed of multiple strands of fine tinned copper wires that are stranded and re-stranded. The pitch of the stranding and re-stranding should be controlled within a certain range, and the stranding and re-stranding directions are the same. When the cable is bent and pulled, due to the good flexibility and ductility of the cable, the conductor is subjected to very little force, effectively avoiding the breakage of the power core conductor due to pulling and bending. At the same time, with the arrangement of the spring washer sleeve 5 and the spring washer 6, it can be ensured that after the cable is subjected to pressure extrusion, the cable will return to its initial state through the elastic potential energy of the spring washer 6, preventing the cable from being in a flattened state for a long time.

[0027] In summary, for this seawater corrosion-resistant and water-blocking cable, by setting a water-blocking seal ring 3 at the connection between the outer sheath 1 and the inner sheath 4, seawater infiltration is avoided. If the outer sheath 1 is accidentally worn through and seawater enters the outer sheath 1, the seawater will be blocked outside the water-blocking seal ring 3, preventing the seawater from flowing through the entire outer sheath 1 and affecting the use of the cable body. Through the setting of the flame-retardant ring 8, the cable achieves the purpose of flame retardancy, preventing the fire from quickly spreading to the inside of the outer sheath 1. Moreover, the waterproof ring 7 also has good anti-corrosion and waterproof effects, further enhancing the practicality of the cable.

[0028] Both the insulation layer 92 and the inner sheath 4 are made of ethylene propylene diene monomer (EPDM) with extremely good non-hygroscopic properties, which improves the heat resistance, sunlight resistance, ozone resistance, and good insulation electrical properties of the cable. The outer sheath 1 is extruded from chlorosulfonated polyethylene with functions such as ozone resistance, ultraviolet resistance, high-temperature exposure resistance, corrosion resistance, water-blocking and wear resistance, improving the service life of the cable in seawater with strong ultraviolet rays and high corrosivity.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seawater corrosion resistant water blocking cable, comprising an outer sheath (1), characterized in that: The outer wall of the outer sheath (1) is provided with an anti-slip wear strip (2), the interior of the outer sheath (1) is provided with a water-blocking sealing ring (3), the inner side of the water-blocking sealing ring (3) is provided with an inner sheath (4), the outer side of the inner sheath (4) is fixedly provided with a spring sleeve (5), the inner wall of the spring sleeve (5) is provided with springs (6), the inner side of the inner sheath (4) is provided with a waterproof ring (7), the inner side of the waterproof ring (7) is provided with a flame-retardant ring (8), and the inner side of the flame-retardant ring (8) is provided with a cable core (9).

2. The seawater corrosion resistant water-blocking cable according to claim 1, characterized in that: The cable core (9) comprises a Kevlar filling layer (91), an insulating layer (92) is arranged inside the Kevlar filling layer (91), and a power line core conductor (93) is laid inside the insulating layer (92).

3. The seawater corrosion resistant water-blocking cable according to claim 1, characterized in that: The number of the water-blocking sealing rings (3) is several, and the several water-blocking sealing rings (3) are evenly arrayed between the outer sheath (1) and the opposite side of the inner sheath (4); the number of the elastic fragment sleeves (5) is several, and the several elastic fragment sleeves (5) surround the outer wall of the inner sheath (4) with the center of the circle of the inner sheath (4) as the center and form a group, and a group of elastic fragment sleeves (5) are interspersed and arrayed on the opposite side of two adjacent water-blocking sealing rings (3).

4. The seawater corrosion resistant water-blocking cable according to claim 1, characterized in that: The anti-slip wear strip (2) is in the shape of a strip, and a plurality of anti-slip wear strips (2) are evenly arrayed on the outer wall of the outer sheath (1).

5. The seawater corrosion resistant water blocking cable according to claim 2, characterized in that: The power line core conductor (93) is made of a plurality of Category 5 tinned soft copper wires which are twisted and then re-twisted, the twisted strand pitch diameter ratio is controlled to be no higher than 12 times, and the re-twisted pitch diameter is no higher than 10 times.

6. The seawater corrosion resistant water blocking cable according to claim 1, characterized in that: The outer sheath (1) is made of rubber extrusion with chlorosulfonated polyethylene as the base material.

7. The seawater corrosion resistant water blocking cable according to claim 2, characterized in that: The insulating layer (92) and the inner sheath (4) are both made of rubber with EPDM as the base material.

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