A high-strength and erosion-resistant outdoor optical cable

Abstract

The present invention discloses a high-strength erosion-resistant outdoor optical cable, relating to the technical field of optical cables. A high-strength erosion-resistant outdoor optical cable includes: multiple groups of cables arranged in a circumferential shape; an inner sleeve sleeved on the multiple cables, a core filler is filled between the inner sleeve and the cables, and a reinforcing steel wire is arranged in the middle of the inner sleeve; by arranging a barrier cavity in the middle sleeve, or forming a diamond-shaped cavity by arranging different numbers of positive spiral sheets and negative spiral sheets, and different numbers of supporting parts, the present invention is used to strengthen the strength of the optical cable while filling with a water-blocking paste. At the same time, a component capable of repelling mice can be added to the water-blocking paste, so that after the outer sleeve is bitten, the water-blocking paste emits a mouse-repelling smell, thereby preventing the optical cable at the damaged part and within a certain length at both ends of the damaged part from being continuously bitten by mice, avoiding an increase in the damaged area of the optical cable, and further improving the service life of the optical cable.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical cables, and specifically relates to a high-strength and erosion-resistant outdoor optical cable. Background Art

[0002] An optical cable is manufactured to meet the performance specifications of optics, mechanics, or the environment. It is a communication cable assembly that uses one or more optical fibers placed in a cladding sheath as a transmission medium and can be used alone or in groups. An optical cable mainly consists of optical fibers, a plastic protective sleeve, and a plastic outer skin. An optical cable is a cable core formed by a certain number of optical fibers in a certain manner, with a sheath on the outside, and some are also covered with an outer protective layer to realize a communication line for transmitting optical signals;

[0003] In the prior art, in order to enhance the corrosion resistance of the optical cable, a water-blocking paste is added to the sleeve of the optical cable, which can not only enhance the corrosion resistance of the optical cable but also play a waterproofing effect. For example, the publication number is CN111624717A, the publication date is September 4, 2020, and the name is a corrosion-resistant optical cable, which includes an outer sheath, a water-blocking ointment tube for realizing the water-blocking function of the optical cable arranged inside the outer sheath, and an inner sheath arranged inside the water-blocking ointment tube; a metal armor layer is adhesively connected to the inner side of the outer sheath, a plastic coating is applied to the outer surface of the metal armor layer, and the inner side of the metal armor layer is adhesively connected to the outer side wall of the water-blocking ointment tube; a cavity is arranged inside the side wall of the water-blocking ointment tube, a horizontal partition is adhesively connected inside the side wall of the water-blocking ointment tube, and a vertical partition for separating the inner cavity of the water-blocking ointment tube is adhesively connected inside the side wall of the water-blocking ointment tube. According to the above structure, the ointment in the inner cavity of the water-blocking ointment tube is separated to ensure that when the entire optical cable is cut, a large amount of overflow caused by the damage of the ointment is prevented;

[0004] However, the existing technology uses the horizontal partitions and vertical partitions for separating the water-blocking paste, lacking support points, which results in a reduction in the strength of the optical cable;

[0005] In the prior art, the publication number is CN115480352A, the publication date is December 16, 2022, and the name is a self-supporting optical cable, which discloses a self-supporting optical cable. This technology has good tensile performance and bending laying performance by setting a first strengthening member, a second strengthening member, a first elastic body, and a second elastic body, and has excellent properties such as low-temperature resistance, wind vibration resistance, and rat bite resistance;

[0006] Although it can improve the strength of the optical cable, it cannot be filled with water-blocking paste;

[0007] Therefore, a high-strength and erosion-resistant outdoor optical cable is proposed to achieve both improving the strength of the optical cable and being able to be filled with water-blocking paste. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a high-strength erosion-resistant outdoor optical cable that can overcome or at least partially solve the above problems.

[0009] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a high-strength erosion-resistant outdoor optical cable, comprising: multiple groups of cables arranged in a circumferential shape; an inner sleeve sleeved on the multiple cables, with a core filler filled between the inner sleeve and the cables, and a reinforcing wire disposed in the middle of the inner sleeve; an outer sleeve sleeved on the inner sleeve, and an installation area is formed between the outer sleeve and the inner sleeve; a barrier reinforcement part disposed in the installation area between the outer sleeve and the inner sleeve, the barrier reinforcement part forms multiple support areas between the outer sleeve and the inner sleeve, the support areas are distributed in a point-like manner, and a filling area is formed by the support areas; a water-blocking paste filled in the filling area.

[0010] Preferably, the barrier reinforcement part includes a middle sleeve, and at least two barrier cavities forming a filling area are circumferentially opened in the cross-section of the middle sleeve, the barrier cavities are arranged at equal intervals along the length of the optical cable, and the support intervals of the support areas are formed between adjacent barrier cavities in the length direction of the optical cable and between adjacent barrier cavities in the cross-section of the middle sleeve.

[0011] Further, the barrier cavities in the middle sleeve are arranged in a spiral shape.

[0012] Preferably, the barrier cavity is in an arc shape, the included angle of the barrier cavity is a, and the number of the barrier cavities is n.

[0013] a = (360° - n×12°) / n.

[0014] Preferably, the barrier reinforcement part includes support parts that cross to form support areas, and a filling area is formed between the four support parts.

[0015] Preferably, the four support parts are sequentially connected to form the side walls of the filling area, and a rhombic cavity of the filling area is formed between the four side walls.

[0016] Preferably, the rhombic cavity is formed by an anti-spiral sheet and a positive-spiral sheet sleeved on the inner sleeve.

[0017] Preferably, when both the anti-spiral sheet and the positive-spiral sheet on the inner sleeve are one, a rhombic cavity is formed on the cross-section of the inner sleeve by the side walls.

[0018] Preferably, when both the anti-spiral sheet and the positive-spiral sheet on the inner sleeve are two, two rhombic cavities are formed on the cross-section of the inner sleeve by the side walls.

[0019] Further, the cable includes a core wrapped by a core protective sleeve, the core protective sleeve is filled with fiber paste, and a spiral steel strip is wound outside the core protective sleeve.

[0020] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: By setting a barrier cavity in the middle sleeve or setting different numbers of positive spiral sheets and reverse spiral sheets to form a diamond-shaped cavity and different numbers of support parts, the present invention can achieve filling the water-blocking paste while strengthening the strength of the optical cable. At the same time, a rodent-repellent component can be added to the water-blocking paste, so that after the outer sleeve is gnawed, the water-blocking paste emits a rodent-repellent smell, so that the optical cable at the damaged part and within a certain length at both ends of the damaged part is not gnawed by rodents continuously, avoiding an increase in the damaged area of the optical cable, and thus improving the service life of the optical cable;

[0021] And the support areas distributed in a dot pattern can effectively strengthen the strength and corrosion resistance of the optical cable.

[0022] The following further describes in detail the specific embodiments of the present invention with reference to the drawings. Description of the Drawings

[0023] In the drawings:

[0024] Figure 1 It is a schematic diagram with two barrier cavities;

[0025] Figure 2 It is a schematic diagram with three barrier cavities;

[0026] Figure 3 It is a schematic diagram with four barrier cavities;

[0027] Figure 4 It is a schematic diagram with ten barrier cavities;

[0028] Figure 5 It is a schematic diagram of the support interval part and the barrier cavity of a high-strength and corrosion-resistant outdoor optical cable proposed by the present invention;

[0029] Figure 6 It is a schematic diagram of a spirally arranged barrier cavity;

[0030] Figure 7 It is a schematic diagram of the spiral steel strip and the core of a high-strength and corrosion-resistant outdoor optical cable proposed by the present invention;

[0031] Figure 8 It is a schematic diagram of the barrier strengthening part of a high-strength and corrosion-resistant outdoor optical cable proposed by the present invention;

[0032] Figure 9 It is a schematic diagram of one reverse spiral sheet and one positive spiral sheet each;

[0033] Figure 10 Schematic diagram of the support part and the diamond-shaped cavity of a high-strength erosion-resistant outdoor optical cable proposed by the present invention;

[0034] Figure 11 Schematic diagrams of two anti-spiral sheets and two positive spiral sheets respectively; Figure 1 ;

[0035] Figure 12 Schematic diagrams of two anti-spiral sheets and two positive spiral sheets respectively; Figure 2 ;

[0036] Figure 13 Schematic diagrams of an anti-spiral sheet and a positive spiral sheet; Figure 1 ;

[0037] Figure 14 Schematic diagrams of an anti-spiral sheet and a positive spiral sheet; Figure 2 ;

[0038] Figure 15 Schematic diagram when the optical cable is bent.

[0039] In the figure: 1. Outer sheath; 2. Barrier reinforcement part; 20. Middle sheath; 21. Barrier cavity; 22. Support spacer; 201. Anti-spiral sheet; 202. Positive spiral sheet; 203. Support part; 204. Diamond-shaped cavity; 205. Side wall; 3. Inner sheath; 4. Core filler; 5. Core protection sleeve; 51. Core; 52. Fiber paste; 53. Spiral steel strip; 6. Strengthening steel wire. Specific embodiments

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0041] The following combines the attached Figure 1 - attached Figure 15 , and details the technical solutions provided by each embodiment of the present invention.

[0042] Embodiment 1: Refer to Figure 1 , a high-strength erosion-resistant outdoor optical cable, including: multiple groups of cables arranged in a circular shape; an inner sheath 3 sleeved on the multiple cables, with a core filler 4 filled between the inner sheath 3 and the cables. The core filler 4 is made of aramid yarn. The aramid yarn has high strength, and its strength is 5-6 times that of steel wire. It can withstand high tensile strength in the optical cable; and it has a high tensile modulus, which means that it is not easily deformed when stressed and can maintain good shape stability. Therefore, it can improve the overall strength of the optical cable. At the same time, it also has the advantages of high temperature resistance, strong chemical corrosion resistance, light weight, non-conductivity, and good anti-aging effect;

[0043] A reinforcing wire 6 is arranged in the middle of the inner sleeve 3 to improve the overall tensile strength of the optical cable. Multiple groups of cables are arranged around the reinforcing wire 6, which can provide good support for the multiple groups of cables, making it difficult for the multiple groups of cables to be misaligned, twisted, etc.;

[0044] An outer sleeve 1 is sleeved on the inner sleeve 3. An installation area is formed between the outer sleeve 1 and the inner sleeve 3. The outer sleeve 1 can be made of polyethylene or polyvinyl chloride, which has good waterproof and corrosion resistance properties. Therefore, using polyethylene or polyvinyl chloride for the outer sleeve 1 can obtain better erosion resistance effect, thereby extending the service life of the optical cable. The installation area is a circumferential ring formed between the outer sleeve 1 and the inner sleeve 3;

[0045] A barrier reinforcement part 2 is arranged in the installation area between the outer sleeve 1 and the inner sleeve 3. The barrier reinforcement part 2 forms multiple support areas between the outer sleeve 1 and the inner sleeve 3, and a filling area is formed by the support areas; the support areas are distributed in a dot shape. The dot-shaped support areas are located in the installation area. When the optical cable is bent, the dot-shaped support areas and the formed filling area can reduce stress concentration, thereby reducing the problem of damage to the core 51 caused by the intrusion of the bending position into the interior of the optical cable (refer to Figure 15 the state diagram of the optical cable when it is bent as shown), thereby improving the overall strength of the optical cable through the support areas and the filling area;

[0046] A water-blocking paste is filled in the filling area. The filling area surrounded by multiple support areas is filled with the water-blocking paste, and the water-blocking paste is distributed in a circumferential shape in the installation area, which can be used to block the infiltration of water when the outer sleeve 1 is damaged;

[0047] Furthermore, naphthalene or p-dichlorobenzene is added to the water-blocking paste. This component can emit a pungent smell, which can stimulate the olfactory system of outdoor rodents and make the rodents reluctant to approach the optical cable. Therefore, when the optical cable is laid outdoors and the outer sleeve 1 is bitten and damaged by rodents, the water-blocking paste is exposed, so that the damaged part and the optical cable within a certain length at both ends of the damaged part are not continuously bitten by rodents, thereby avoiding an increase in the damaged area of the optical cable;

[0048] Furthermore, in order to avoid the harm of naphthalene or p-dichlorobenzene to the human body during the manufacture of the optical cable, naphthalene or p-dichlorobenzene can be replaced by any one of menthol or menthone, or a combination of menthol and menthone;

[0049] Furthermore, naphthalene, p-dichlorobenzene or menthol, menthone can also be replaced by camphorwood (camphor), or a combination of any two or three of menthol, menthone and camphorwood.

[0050] Example 2: Refer to Figures 1 - 6, a high-strength erosion-resistant outdoor optical cable, which is basically the same as that of Embodiment 1. Further, the barrier reinforcement part 2 includes a middle sleeve 20. The middle sleeve 20 is circumferentially provided with at least two barrier cavities 21 forming a filling area on the cross-section. The barrier cavities 21 are arranged at equal intervals along the length of the optical cable. The support intervals 22 of the support area are formed between adjacent barrier cavities 21 in the length direction of the optical cable and between adjacent barrier cavities 21 on the cross-section of the middle sleeve 20, and the support intervals 22 form a mesh structure;

[0051] The formation of the barrier cavity 21 is integrally formed with the middle sleeve 20. In terms of structural strength, compared with the horizontal and vertical partitions used in the existing technologies mentioned, the integration degree is high, and it can further improve the strength improvement of the barrier reinforcement part 2 on the optical cable;

[0052] The support interval 22 is used to make the barrier cavity 21 exist alone and is used to store the water-blocking paste alone. Therefore, when the optical cable is cut, only the water-blocking paste in the barrier cavity 21 will flow out, thus avoiding a large amount of water-blocking paste from flowing out and deteriorating or becoming ineffective after contacting with external substances;

[0053] The barrier cavities 21 in the middle sleeve 20 are arranged in a spiral shape;

[0054] Setting the barrier cavities 21 in a spiral shape makes the support intervals 22 staggeredly distributed in the length direction of the middle sleeve 20. This can better improve the strength of the optical cable compared with the existing technologies, and the barrier cavities 21 can also be used to store the water-blocking paste. Therefore, while strengthening the strength of the optical cable, the water-blocking paste can be filled;

[0055] The barrier cavity 21 is arc-shaped, the included angle of the barrier cavity 21 is a, and the number of the barrier cavities 21 is n,

[0056] a = (360° - n×12°) / n, which makes the included angle between adjacent barrier cavities 21 be 12°. It can maintain the strength of the optical cable while having enough space to fill the water-blocking paste, thereby maintaining the erosion-resistant performance of the optical cable. Compared with the existing technologies, the number of barrier cavities 21 can be set more reasonably;

[0057] Embodiment 3: Refer to Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , a high-strength erosion-resistant outdoor optical cable, which is basically the same as that of Embodiment 1. Further, the barrier reinforcement part 2 includes support parts 203 formed by crossing to form a support area, and a filling area is formed between the four support parts 203;

[0058] The four support parts 203 are sequentially connected to form the side wall 205 of the filling area, and a rhombic cavity 204 of the filling area is formed between the four side walls 205;

[0059] The diamond-shaped cavity 204 is formed by an anti-helical sheet 201 and a positive helical sheet 202 sleeved on the inner sleeve 3;

[0060] By sleeving the anti-helical sheet 201 and the positive helical sheet 202 on the inner sleeve 3, a support portion 203 is formed at the intersection of the anti-helical sheet 201 and the positive helical sheet 202 to provide strength for the optical cable;

[0061] And when the optical cable is bent, the support portion 203 can be used to disperse stress, and the formed diamond-shaped cavity 204 can contract when the optical cable is bent, thereby avoiding damage to the core 51 caused by the intrusion of the bent portion into the core 51;

[0062] And the water-blocking paste is filled in the diamond-shaped cavity 204, which can make the water-blocking paste exist independently. Therefore, when the outer sleeve 1 is damaged, the water-blocking paste in other diamond-shaped cavities 204 can be prevented from being damaged;

[0063] And the diamond-shaped cavity 204 forms a diamond shape in the circumferential direction of the optical cable. Therefore, when the optical cable is bent, the diamond-shaped cavity 204 can contract better, thereby avoiding damage to the core 51. At the same time, the diamond-shaped cavity 204 is composed of two triangles, so the strength of the optical cable can be improved better.

[0064] The positive helical sheet 202 and the anti-helical sheet 201 can be made of rubber or metal.

[0065] Example 4: Refer to Figure 9 、 Figure 10 A high-strength and erosion-resistant outdoor optical cable is basically the same as that in Example 3. Further: when both the anti-helical sheet 201 and the positive helical sheet 202 on the inner sleeve 3 are one, the side wall 205 forms a diamond-shaped cavity 204 on the cross-section of the inner sleeve 3;

[0066] When a diamond-shaped cavity 204 is formed on the cross-section of the inner sleeve 3, the diamond-shaped cavity 204 for filling the water-blocking paste has a large travel around the inner sleeve 3. Because when rodents bite the outer sleeve 1, more water-blocking paste can be exposed, thereby improving the rodent repellent effect.

[0067] Example 5: Refer to Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 A high-strength and erosion-resistant outdoor optical cable is basically the same as that in Example 3. Further: when both the anti-helical sheet 201 and the positive helical sheet 202 on the inner sleeve 3 are two, the side wall 205 forms two diamond-shaped cavities 204 on the cross-section of the inner sleeve 3;

[0068] When two diamond-shaped cavities 204 are formed on the cross-section of the inner sleeve 3, more support portions 203 can be further formed on the circumference of the inner sleeve 3, thereby improving the strength of the optical cable.

[0069] Example 6: Refer to Figure 7 , a high-strength and erosion-resistant outdoor optical cable, which is basically the same as Example 1. Further, the cable includes a core 51 wrapped by a core protection sleeve 5, a fiber paste 52 is filled in the core protection sleeve 5, and a spiral steel strip 53 is wound outside the core protection sleeve 5;

[0070] To improve the strength of the cable group, and at the same time, when both the outer sleeve 1 and the inner sleeve 3 are damaged, the spiral steel strip 53 can still protect the core 51.

[0071] It should be noted that although the above improvements to the optical cable are discussed independently, one or more such improvements can be adopted in a single optical cable. For example, in a single optical cable, barrier cavities 21 with different numbers can be adopted at the same time, such as barrier cavities 21 with numbers 2, 3, 4, 5, 6, 7, 8, 9, 10 are arranged in sequence and circulated;

[0072] It is also possible to set one anti-spiral sheet 201, one positive-spiral sheet 202 and two anti-spiral sheets 201, two positive-spiral sheets 202 respectively in a single optical cable, and make the one anti-spiral sheet 201, one positive-spiral sheet 202 and two anti-spiral sheets 201, two positive-spiral sheets 202 connect and circulate.

[0073] In the present invention, by setting barrier cavities 21 or different numbers of positive-spiral sheets 202 and anti-spiral sheets 201 in the middle sleeve 20 to form diamond-shaped cavities 204 and different numbers of support portions 203, it is used to strengthen the strength of the optical cable while filling the water-blocking paste. At the same time, a component capable of repelling mice can be added to the water-blocking paste, so that after the outer sleeve 1 is gnawed, the water-blocking paste emits a mouse-repelling smell, thereby preventing the optical cable at the damaged part and a certain length at both ends of the damaged part from being continuously gnawed by mice, avoiding an increase in the damaged area of the optical cable, and thus improving the service life of the optical cable.

[0074] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content as equivalent changes within the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the present invention.

Claims

1. A high-strength erosion-resistant outdoor optical cable, characterized in that, Comprising: Multiple groups of cables arranged in a circular shape; An inner sleeve (3) sleeved on multiple said cables, a core filler (4) is filled between the inner sleeve (3) and the cables, and a reinforcing steel wire (6) is arranged in the middle of the inner sleeve (3); An outer sleeve (1) sleeved on the inner sleeve (3), an installation area is formed between the outer sleeve (1) and the inner sleeve (3); A barrier and reinforcement part (2) arranged in the installation area between the outer sleeve (1) and the inner sleeve (3), the barrier and reinforcement part (2) forms multiple support areas between the outer sleeve (1) and the inner sleeve (3), and a filling area is formed by the support areas; A water-blocking paste filled in the filling area; The barrier and reinforcement part (2) includes a middle sleeve (20), at least two barrier cavities (21) forming a filling area are circumferentially opened on the cross-section of the middle sleeve (20), the barrier cavities (21) are arranged at equal intervals along the length of the optical cable, and a support interval part (22) of the support area is formed between adjacent barrier cavities (21) in the length direction of the optical cable and between adjacent barrier cavities (21) on the cross-section of the middle sleeve (20); The barrier cavities (21) in the middle sleeve (20) are arranged in a spiral shape.

2. The high-strength erosion-resistant outdoor optical cable according to claim 1, wherein The barrier cavity (21) is arc-shaped, the included angle of the barrier cavity (21) is a, and the number of the barrier cavities (21) is n, a = (360° - n×12°) / n.

3. A high-strength and erosion-resistant outdoor optical cable, characterized in that, Comprising: Multiple groups of cables arranged in a circular shape; An inner sleeve (3) sleeved on multiple said cables, a core filler (4) is filled between the inner sleeve (3) and the cables, and a reinforcing steel wire (6) is arranged in the middle of the inner sleeve (3); An outer sleeve (1) sleeved on the inner sleeve (3), an installation area is formed between the outer sleeve (1) and the inner sleeve (3); A barrier and reinforcement part (2) arranged in the installation area between the outer sleeve (1) and the inner sleeve (3), the barrier and reinforcement part (2) forms multiple support areas between the outer sleeve (1) and the inner sleeve (3), and a filling area is formed by the support areas; A water-blocking paste filled in the filling area; The barrier and reinforcement part (2) includes support parts (203) that cross to form support areas, and a filling area is formed between the four support parts (203); Side walls (205) of the filling area are sequentially connected between the four support parts (203), and a diamond-shaped cavity (204) of the filling area is formed between the four side walls (205); The diamond-shaped cavity (204) is formed by an anti-spiral sheet (201) and a positive-spiral sheet (202) sleeved on the inner sleeve (3).

4. The high-strength erosion-resistant outdoor optical cable according to claim 3, characterized in that, When both the anti-spiral sheet (201) and the positive-spiral sheet (202) on the inner sleeve (3) are one, the side walls (205) form a diamond-shaped cavity (204) on the cross-section of the inner sleeve (3).

5. The high-strength erosion-resistant outdoor optical cable according to claim 4, characterized in that, When both the anti-spiral sheet (201) and the positive-spiral sheet (202) on the inner sleeve (3) are two, the side walls (205) form two diamond-shaped cavities (204) on the cross-section of the inner sleeve (3).

6. A high-strength erosion-resistant outdoor optical cable according to claim 1 or 3, characterized in that, The cable includes a core (51) wrapped by a core protective sleeve (5), the core protective sleeve (5) is filled with fiber paste (52), and a spiral steel strip (53) is wound outside the core protective sleeve (5).

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