High-strength erosion-resistant outdoor optical cable

Abstract

The invention discloses a high-strength erosion-resistant outdoor optical cable, and relates to the technical field of optical cables. The high-strength erosion-resistant outdoor optical cable comprises a plurality of groups of cables which are arranged in a circumferential shape; the inner sleeve is arranged on the plurality of cables in a sleeving manner, a cable 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; according to the invention, the middle sleeve is internally provided with the blocking cavity or the rhombic cavities formed by the forward spiral sheets and the reverse spiral sheets of different numbers and the supporting parts of different numbers, so that the strength of the optical cable is enhanced while the water-blocking paste is filled, and meanwhile, components capable of repelling rats can be added into the water-blocking paste, so that after the outer sleeve is bitten, the water-blocking paste can be prevented from being damaged. The water-blocking paste emits rat-repelling smell, so that the damaged part and the optical cable within a certain length at the two ends of the damaged part are prevented from being continuously bitten by rats, the damage area of the optical cable is prevented from being increased, and the service life of the optical cable is prolonged.

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 coated 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 formed by a certain number of optical fibers assembled into a cable core in a certain manner, with a sheath on the outside, and some also have an outer protective layer, which is a communication line used to transmit optical signals; 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 published patent with the publication number CN111624717A, published on September 4, 2020, titled "A Corrosion-Resistant Optical Cable", includes an outer sheath, a water-blocking ointment tube arranged inside the outer sheath for realizing the water-blocking function of the optical cable, 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 provided 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 ointment overflow caused by damage is prevented; However, the existing technology uses the horizontal and vertical partitions for separating the water-blocking paste, lacking support points, which results in a reduction in the strength of the optical cable; In the prior art, the published patent with the publication number CN115480352A, published on December 16, 2022, titled "Self-Supporting Optical Cable", discloses a self-supporting optical cable. This technology has good tensile performance and bending laying performance by setting a first reinforcing member, a second reinforcing 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; Although it can improve the strength of the optical cable, it cannot be filled with water-blocking paste; 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

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a high-strength and erosion-resistant outdoor optical cable that can overcome the above problems or at least partially solve the above problems.

[0004] 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, 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; an outer sleeve sleeved on the inner sleeve, an installation area is formed between the outer sleeve and the inner sleeve; a barrier reinforcement part is arranged 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 shape, and a filling area is formed by the support areas; a water-blocking paste is filled in the filling area.

[0005] Preferably, the barrier reinforcement part includes a middle sleeve, 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 the barrier cavities adjacent in the length direction of the optical cable and between the barrier cavities adjacent in the cross-section of the middle sleeve.

[0006] Further, the barrier cavities in the middle sleeve are arranged in a spiral shape.

[0007] 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. a = (360° - n×12°) / n.

[0008] Preferably, the barrier reinforcement part includes a support part formed by crossing to form a support area, and a filling area is formed between the four support parts.

[0009] 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.

[0010] Preferably, the rhombic cavity is formed by an anti-spiral sheet and a positive spiral sheet sleeved on the inner sleeve.

[0011] 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.

[0012] 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.

[0013] Further, the cable includes a core wrapped by a core protection sleeve, a fiber paste is filled in the core protection sleeve, and a spiral steel strip is wound outside the core protection sleeve.

[0014] 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 forming a diamond-shaped cavity with different numbers of positive spiral fins and negative spiral fins, 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 bitten, the water-blocking paste emits a rodent-repellent 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 rodents, avoiding an increase in the damaged area of the optical cable, and thus improving the service life of the optical cable; And the support areas distributed in a dot pattern can effectively strengthen the strength and corrosion resistance of the optical cable.

[0015] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the drawings: Figure 1 It is a schematic diagram with two barrier cavities; Figure 2 It is a schematic diagram with three barrier cavities; Figure 3 It is a schematic diagram with four barrier cavities; Figure 4 It is a schematic diagram with ten barrier cavities; 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; Figure 6 It is a schematic diagram of the barrier cavity arranged in a spiral shape; 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; 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; Figure 9 It is a schematic diagram of one negative spiral fin and one positive spiral fin each; Figure 10 It is a schematic diagram of the support part and the diamond-shaped cavity of a high-strength and corrosion-resistant outdoor optical cable proposed by the present invention; Figure 11 It is a schematic diagram of two negative spiral fins and two positive spiral fins each Figure 1 ; Figure 12 It is a schematic diagram of two negative spiral fins and two positive spiral fins each Figure 2 ; Figure 13 It is a schematic diagram of the negative spiral fin and the positive spiral fin Figure 1; Figure 14 Structural schematic of the anti - spiral sheet and the positive - spiral sheet Figure 2 ; Figure 15 Schematic diagram when the optical cable is bent

[0017] In the figure: 1. Outer sleeve; 2. Barrier and strengthening part; 20. Middle sleeve; 21. Barrier cavity; 22. Support and spacer part; 201. Anti - spiral sheet; 202. Positive - spiral sheet; 203. Support part; 204. Rhombic cavity; 205. Side wall; 3. Inner sleeve; 4. Core filler; 5. Core protection sleeve; 51. Core; 52. Fiber paste; 53. Spiral steel strip; 6. Strengthening steel wire Specific implementation manners

[0018] 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 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

[0019] The following combines the attached Figure 1 - attached Figure 15 , and details the technical solutions provided by each embodiment of the present invention

[0020] Embodiment 1: Refer to Figure 1 , a high - strength and erosion - resistant outdoor optical cable, including: multiple groups of cables arranged in a circumferential shape; an inner sleeve 3 sleeved on the multiple cables, with a core filler 4 filled between the inner sleeve 3 and the cables. The core filler 4 uses aramid yarn. The aramid yarn has high strength, and its strength is 5 - 6 times that of steel wire. It can withstand high - strength tension 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 A strengthening steel wire 6 is arranged in the middle of the inner sleeve 3 to improve the overall tensile strength of the optical cable, and the multiple groups of cables are arranged around the strengthening steel wire 6, which can have a good supporting effect on the multiple groups of cables, making it not easy for the multiple groups of cables to be misaligned, twisted, etc 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 - resistant properties. Therefore, using polyethylene or polyvinyl chloride for the outer sleeve 1 can obtain better erosion - resistant 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 The 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 a plurality of 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, and 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 from the bending position into 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; The water-blocking paste is filled in the filling area. The filling area surrounded by a plurality of support areas is filled with the water-blocking paste, and the water-blocking paste is distributed in a circular shape in the installation area, and can be used to block the infiltration of water when the outer sleeve 1 is damaged; Further, naphthalene or p-dichlorobenzene is added to the water-blocking paste. This component can emit a pungent odor, and this odor can stimulate the olfactory system of outdoor rodents, making the rodents reluctant to approach the optical cable. Therefore, when the optical cable is laid outdoors and the outer sleeve 1 is damaged by being gnawed 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 gnawed by rodents continuously, thereby avoiding an increase in the damaged area of the optical cable; Further, 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; Further, 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.

[0021] Example 2: Refer to Figures 1 - 6 , a high-strength and erosion-resistant outdoor optical cable, which is basically the same as Example 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 in 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 areas are formed between the barrier cavities 21 adjacent in the length direction of the optical cable and between the barrier cavities 21 adjacent in the cross section of the middle sleeve 20, and the support intervals 22 form a mesh structure; 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 the barrier reinforcement part 2 can further improve the strength of the optical cable; 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, thereby avoiding a large amount of water-blocking paste from flowing out and deteriorating and becoming ineffective after contacting with external substances; The barrier cavity 21 inside the middle sleeve 20 is arranged in a spiral shape; The barrier cavity 21 is arranged in a spiral shape, so that the support spacer 22 is distributed in a staggered manner in the length direction of the middle sleeve 20, which can better improve the strength of the optical cable compared with the prior art, and the barrier cavity 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 loaded.

[0022] The barrier cavity 21 is in an arc shape, 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, 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 resistance performance of the optical cable. Compared with the prior art, the number of barrier cavities 21 can be set more reasonably.

[0023] Example 3: Refer to Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , a high-strength and erosion-resistant outdoor optical cable, which is basically the same as Example 1. Furthermore: The barrier strengthening part 2 includes support parts 203 that cross to form a support area, and a filling area is formed between the four support parts 203; 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; The rhombic cavity 204 is formed by an anti-spiral sheet 201 and a positive spiral sheet 202 sleeved on the inner sleeve 3; By sleeving the anti-spiral sheet 201 and the positive spiral sheet 202 on the inner sleeve 3, support parts 203 are formed at the intersections of the anti-spiral sheet 201 and the positive spiral sheet 202 to provide strength for the optical cable; And when the optical cable is bent, the support parts 203 can be used to disperse stress, and the formed rhombic cavity 204 can contract when the optical cable is bent, thereby avoiding damage to the core 51 caused by the intrusion of the bent part of the optical cable into the core 51; And the water blocking paste is filled in the rhombic 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 rhombic cavities 204 can be prevented from being damaged; And the rhombic cavity 204 forms a rhombus in the circumferential direction of the optical cable. Therefore, when the optical cable is bent, the rhombic cavity 204 can contract better, thereby avoiding damage to the core 51. At the same time, the rhombic cavity 204 is composed of two triangles, so the strength of the optical cable can be better improved.

[0024] The positive spiral sheet 202 and the negative spiral sheet 201 can be made of rubber or metal materials.

[0025] Example 4: Refer to Figure 9 , Figure 10 , a high-strength and erosion-resistant outdoor optical cable, which is basically the same as that in Example 3. Further, when there is one negative spiral sheet 201 and one positive spiral sheet 202 on the inner sleeve 3, the side wall 205 forms a rhombus cavity 204 on the cross-section of the inner sleeve 3; When a rhombus cavity 204 is formed on the cross-section of the inner sleeve 3, the rhombus cavity 204 for filling the water-blocking paste has a long 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.

[0026] Example 5: Refer to Figure 11 , Figure 12 , Figure 13 , Figure 14 , a high-strength and erosion-resistant outdoor optical cable, which is basically the same as that in Example 3. Further, when there are two negative spiral sheets 201 and two positive spiral sheets 202 on the inner sleeve 3, the side wall 205 forms two rhombus cavities 204 on the cross-section of the inner sleeve 3; When two rhombus cavities 204 are formed on the cross-section of the inner sleeve 3, it can further make more support parts 203 formed on the circumference of the inner sleeve 3, thereby improving the strength of the optical cable.

[0027] Example 6: Refer to Figure 7 , a high-strength and erosion-resistant outdoor optical cable, which is basically the same as that in Example 1. Further, the cable includes a core 51 wrapped by a core protection sleeve 5, the core protection sleeve 5 is filled with fiber paste 52, and a spiral steel strip 53 is wound outside the core protection sleeve 5; 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.

[0028] 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 used 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; It is also possible to set one negative spiral sheet 201, one positive spiral sheet 202 and two negative spiral sheets 201, two positive spiral sheets 202 respectively in a single optical cable, and make the one negative spiral sheet 201, one positive spiral sheet 202 and two negative spiral sheets 201, two positive spiral sheets 202 connect and circulate.

[0029] In the present invention, by providing a barrier cavity 21 in the middle sleeve 20, or forming a diamond-shaped cavity 204 and different numbers of support portions 203 by providing different numbers of positive spiral fins 202 and reverse spiral fins 201, it is used to strengthen the strength of the optical cable while filling with a water-blocking paste. At the same time, a rodent-repellent component can be added to the water-blocking paste, so that after the outer sleeve 1 is gnawed, the water-blocking paste emits a rodent-repellent 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 gnawed by rodents, avoiding an increase in the damaged area of the optical cable, and thus extending the service life of the optical cable.

[0030] 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 of the present invention can make some changes or modifications to equivalent embodiments with equivalent changes by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. A high-strength and erosion-resistant outdoor optical cable, characterized in that, Including: Multiple groups of cables arranged in a circular shape; An inner sleeve (3) sleeved on multiple said cables, with a core filler (4) filled between the inner sleeve (3) and the cables, and a reinforcing steel wire (6) arranged in the middle of the inner sleeve (3); An outer sleeve (1) sleeved on the inner sleeve (3), and an installation area is formed between the outer sleeve (1) and the inner sleeve (3); A barrier reinforcing part (2) arranged in the installation area between the outer sleeve (1) and the inner sleeve (3), the barrier reinforcing part (2) forms multiple support areas between the outer sleeve (1) and the inner sleeve (3), the support areas are distributed in a dot shape, and a filling area is formed by the support areas; A water-blocking paste filled in the filling area.

2. The high-strength and erosion-resistant outdoor optical cable according to claim 1, wherein, The barrier reinforcing part (2) includes a middle sleeve (20), and 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 the support interval parts (22) of the support areas are formed between the barrier cavities (21) adjacent in the length direction of the optical cable and between the barrier cavities (21) adjacent on the cross-section of the middle sleeve (20).

3. The high-strength erosion-resistant outdoor optical cable according to claim 2, wherein, The barrier cavities (21) in the middle sleeve (20) are arranged in a spiral shape.

4. The high-strength erosion-resistant outdoor optical cable according to claim 3, wherein The barrier cavity (21) is in an arc shape, 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.

5. The high-strength erosion-resistant outdoor optical cable according to claim 1, wherein, The barrier reinforcing part (2) includes support parts (203) formed by crossing to form support areas, and a filling area is formed between four said support parts (203).

6. The high-strength erosion-resistant outdoor optical cable according to claim 5, wherein Side walls (205) of the filling area are sequentially connected between four said support parts (203), and a diamond-shaped cavity (204) of the filling area is formed between four said side walls (205).

7. The high-strength erosion-resistant outdoor optical cable according to claim 6, characterized in that, 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).

8. The high-strength erosion-resistant outdoor optical cable according to claim 7, characterized in that, When both the anti-spiral sheet (201) and the positive-spiral sheet (202) on the inner sleeve (3) are one, a diamond-shaped cavity (204) is formed on the cross-section of the inner sleeve (3) by the side walls (205).

9. The high-strength erosion-resistant outdoor optical cable according to claim 7, characterized in that, When both the anti-spiral sheet (201) and the positive-spiral sheet (202) on the inner sleeve (3) are two, two diamond-shaped cavities (204) are formed on the cross-section of the inner sleeve (3) by the side walls (205).

10. A high-strength erosion-resistant outdoor optical cable according to claim 2 or 5, characterized in that 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).

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