A snow-proof bending type aerial optical cable

Abstract

The present invention provides an anti-snow bending overhead optical cable for use in the field of optical cables. In snowy and freezing weather, the lower airbag continues to stretch laterally until the ports of two adjacent groups of lower airbags collide with each other, which can effectively prevent the optical cable body from continuing to bend, thereby protecting the optical cable. At the same time, the optical telescopic part shrinks to form a gap, and external sunlight enters the lower airbag through the gap, and cooperates with the aerogel column to play a photothermal conversion role, and diffuses the generated heat to the upper airbag, so that the snow or ice blocks that have not fallen off the surface of the upper airbag can be melted by heat, thereby promoting the enhanced shedding effect. At the same time, the telescopic block can form a gap in a cold environment so that external sunlight can enter the lower airbag for photothermal conversion, and when the temperature is high, the interior of the lower airbag is shielded to prevent external light from entering and causing unnecessary photothermal conversion, thereby reducing the heat dissipation pressure of the optical cable itself under high temperature conditions.

Description

Technical Field

[0001] The present application relates to the field of optical cables, and in particular to an anti-snow bending overhead optical cable. Background Art

[0002] Optical cable is a cable core composed of a certain number of optical fibers arranged in a certain manner, which is covered with a sheath and sometimes an outer sheath. The protective structure of the outer layer can prevent the surrounding environment from damaging the optical fiber. It is a communication line used to realize optical signal transmission. Among them, overhead optical cable is an optical cable hung on a pole. Because overhead optical cable is installed in a hanging manner, when encountering rain, snow and freezing weather outdoors, the additional weight will increase the bending curvature of the optical cable and cause the optical cable to break, resulting in large economic losses.

[0003] In the existing protection of overhead optical cables against rain, snow and freezing, a protective cover is usually attached to the outside of the optical cable, and electric heating is used to assist in achieving the corresponding snow removal and anti-freezing protection. However, the use of electricity will cause power loss during the transmission of the overhead optical cable, increasing the transmission cost. There is also a potential threat of short circuit in the circuit snow removal equipment, which will affect the transmission quality of the optical cable, making the safe use of the overhead optical cable not guaranteed.

[0004] To this end, we propose an anti-snow bending overhead optical cable. By attaching an airbag structure to the surface of the optical cable, the optical cable can achieve corresponding deformation when bending under load, so that the upper part of the airbag structure forms a slope structure and the lower part forms an expanded and elongated bending structure, thereby promoting the accumulated snow to roll down the slope, achieving the snow removal effect. At the same time, it can also use the port interference effect of the adjacent elongated airbags to prevent the optical cable from continuing to bend, thereby playing a protective role. Summary of the Invention

[0005] The present application aims to ensure that snow is removed from the surface of the optical cable while reducing power consumption, and to prevent the optical cable from excessively bending under load. Compared with the prior art, the present application provides an anti-snow bending type overhead optical cable, comprising an optical cable body and an anti-snow protection component. The anti-snow protection component is equidistantly sleeved on the surface of the optical cable body, and the anti-snow protection component includes a lower airbag, an upper airbag, a through hole, and an isolation block.

[0006] The surface of the optical cable body is mounted with a semicircular lower airbag and an upper airbag, and the radius of the lower airbag and the upper airbag are the same. The interface between the lower airbag and the upper airbag is sealed, and an isolation block is installed at the interface between the lower airbag and the upper airbag. The interior of the isolation block is provided with a through hole.

[0007] A light-shielding telescopic component is embedded and installed inside the lower airbag, and the arc length of the light-shielding telescopic component is the same as that of the lower airbag. An aerogel column is installed inside the lower airbag.

[0008] Furthermore, the aerogel column is made of a transparent material, and the interior of the aerogel column is filled with aerogel.

[0009] Furthermore, the shading telescopic component is composed of a telescopic block and elastic cloth. The outer surface of the telescopic block is fitted with the elastic cloth, and the elastic cloth is made of a shading material. The telescopic block is made of a thermally expandable and thermally contractible material.

[0010] Furthermore, one side surface of the telescopic block is convex, and the other side surface of the telescopic block is concave, and the two connected groups of light-shielding telescopic parts are interlocked and connected with each other.

[0011] Furthermore, a heat insulating layer is installed on the inner wall of the lower air bag away from the light-shielding telescopic component, and a reflective layer is connected to the surface of the heat insulating layer.

[0012] Furthermore, the expansion direction of the lower airbag is a transverse direction parallel to the arrangement direction of the optical cable body, and the deformation direction of the upper airbag is a longitudinal direction perpendicular to the arrangement direction of the optical cable body.

[0013] Furthermore, a support baffle is installed at the inner center of the upper airbag, and magnetic blocks symmetrically arranged about the support baffle are installed on the inner wall of the upper airbag. An arc-shaped elastic membrane is installed on the inner wall of the upper airbag away from the magnetic blocks, and a magnetic strip is installed on the surface of the elastic membrane.

[0014] Furthermore, the magnetic strip is staggered with the magnetic block before the upper airbag is deformed, and the repulsive force between the magnetic strip and the magnetic block is 0.5N-1N before the upper airbag is deformed.

[0015] Furthermore, a heat-conducting block is sealed and installed on the surface of the elastic membrane away from the magnetic strip, and the heat-conducting block penetrates the upper air bag and fits with the surface of the optical cable body.

[0016] Furthermore, the surfaces of the upper airbag and the lower airbag are both covered with an anti-icing coating layer.

[0017] Compared with the existing technology, the advantages of this application are:

[0018] (1) In snowy and freezing weather, the lower airbag continues to stretch horizontally until the ports of the two adjacent lower airbags collide with each other. At this time, the space below the optical cable body supported by the lower airbag loses the ability to continue bending, which can effectively prevent the optical cable body from continuing to bend, thereby protecting the optical cable. The optical telescopic part shrinks to form a gap, and then the external sunlight can enter the lower airbag through the gap. After passing through the high-transmittance aerogel column, it can play a photothermal conversion role, and the generated heat is transferred to the upper airbag through the through hole, so that the snow or ice blocks that have not fallen off the surface of the upper airbag can be melted by heat, thereby promoting the enhanced shedding effect.

[0019] (2) The telescopic block can form a gap in a cold environment so that external sunlight can enter the lower airbag for photothermal conversion, and when the temperature is high, the interior of the lower airbag is shielded to prevent external light from entering and causing unnecessary photothermal conversion, thereby reducing the heat dissipation pressure of the optical cable itself under high temperature conditions.

[0020] (3) The thermal insulation layer can prevent the heat generated in the lower air bag from being directly transferred to the surface of the optical cable body, thereby transferring as much heat as possible from the lower air bag to the upper air bag to ensure the melting process.

[0021] (4) By limiting the expansion direction, the vertical expansion of the lower airbag can be reduced, thereby ensuring that the lower airbag is maximized in lateral stretching and the resistance effect is maximized. At the same time, the upper airbag can form a slope structure as much as possible when deformed without stretching, so that the slope angle is increased as much as possible, thereby enhancing the effect of promoting shedding.

[0022] (5) The support baffle can make the upper airbag form a slope with a triangular cross section rather than a slope with a smooth chamfered top when it shrinks. After the upper airbag is deformed, the repulsive effect between the magnetic strip and the magnetic block is strengthened, which can prevent the slope structure from being further compressed and collapsed, thereby maintaining the slope state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the overall structure diagram of this application;

[0024] Figure 2 This is a comparison diagram of the optical cable body and anti-snow protection component of the present application before and after deformation;

[0025] Figure 3 This is a diagram showing the interference state between the deformations of two adjacent sets of anti-snow protection components after the optical cable body and the anti-snow protection components of the present application are deformed;

[0026] Figure 4 A cross-sectional view of the optical cable body and the anti-snow protection component of this application;

[0027] Figure 5 This is a schematic diagram of the deformation of the anti-snow protection component of the present application;

[0028] Figure 6 This is a diagram showing the state of photothermal action occurring inside the lower airbag of this application;

[0029] Figure 7 A cross-sectional view of the light-shielding telescopic member of this application;

[0030] Figure 8 This is a schematic diagram of the disengagement process of the light-shielding telescopic member of the present application;

[0031] Figure 9This is the installation diagram of the elastic membrane and heat conducting block of this application;

[0032] Figure 10 This is the installation diagram of the elastic membrane and magnetic strip of this application.

[0033] Description of the numbers in the figure:

[0034] 1. Optical cable body; 2. Anti-snow protection assembly; 21. Lower airbag; 22. Upper airbag; 23. Through hole; 24. Isolation block; 211. Thermal insulation layer; 212. Light-shielding telescopic member; 213. Aerogel column; 221. Magnetic block; 222. Elastic membrane; 223. Support baffle; 224. Magnetic strip; 3. Thermal conductive block; 4. Telescopic block; 5. Stretch fabric. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0036] Example 1:

[0037] The present invention provides a snow-proof bending type aerial optical cable, please refer to Figure 1-6 A snow-proof bending type aerial optical cable includes an optical cable body 1 and an anti-snow protection component 2. The surface of the optical cable body 1 is equidistantly sleeved with the anti-snow protection component 2. The anti-snow protection component 2 includes a lower airbag 21, an upper airbag 22, a through hole 23 and an isolation block 24.

[0038] The surface of the optical cable body 1 is mounted with a semicircular lower airbag 21 and an upper airbag 22, and the radius of the lower airbag 21 and the upper airbag 22 are the same. The interface between the lower airbag 21 and the upper airbag 22 is sealed. An isolation block 24 is installed at the interface between the lower airbag 21 and the upper airbag 22, and a through hole 23 is provided inside the isolation block 24.

[0039] Specifically, the installation distance between adjacent snow protection components 2 is within the stretching limit range of adjacent lower airbags 21;

[0040] Specifically, when snow or ice accumulates on the surface of the overhead optical cable, the optical cable body 1 bends accordingly under the action of gravity. At this time, the optical cable body 1 in the downwardly bent state exerts an squeezing effect on the lower airbag 21, thereby stretching the lower airbag 21. At this time, the gas inside the upper airbag 22 is supplementally transferred to the lower airbag 21 through the through hole 23. At this time, the lower airbag 21 continues to stretch laterally until the ports of the two adjacent groups of lower airbags 21 collide with each other. At this time, the space below the optical cable body 1 supported by the lower airbag 21 is lost, which can effectively prevent the optical cable body 1 from continuing to bend, thereby protecting the optical cable.

[0041] At the same time, the gas in the upper airbag 22 is compressed to form a slope structure, so that the snow blocks originally accumulated on the surface of the upper airbag 22 can roll down;

[0042] See also Figure 6 A light-shielding telescopic member 212 is embedded in the interior of the lower airbag 21 , and the arc length of the light-shielding telescopic member 212 is the same as that of the lower airbag 21 . An aerogel column 213 is installed inside the lower airbag 21 .

[0043] Specifically, in snowy and freezing weather, the ambient temperature of the optical cable is low. At this time, the light-shielding telescopic part 212 shrinks to form a gap, and then the external sunlight can enter the lower airbag 21 through the gap. After passing through the high-transmittance aerogel column 213, it can play a photothermal conversion role, and diffuse the generated heat through the through hole 23 to the upper airbag 22, so that the snow or ice blocks that have not fallen off the surface of the upper airbag 22 can be melted by heat, thereby promoting the enhanced shedding effect.

[0044] The aerogel column 213 is made of a transparent material, and the interior of the aerogel column 213 is filled with aerogel.

[0045] Specifically, the aerogel column 213 is a lightweight material, which can effectively reduce the weight of the optical cable compared to the electric heating structure of the prior art. At the same time, the filler inside the aerogel column 213 is made by mixing the raw materials for making aerogel in proportion, mixing the catalyst with particles of a silica-containing compound in a liquid solution, and then drying the formed aerogel final product. It has high light transmittance and thus has good photothermal conversion efficiency.

[0046] See also Figure 7-8 The shading telescopic member 212 is composed of a telescopic block 4 and an elastic cloth 5. The outer surface of the telescopic block 4 is fitted with the elastic cloth 5, and the elastic cloth 5 is made of a shading material, and the telescopic block 4 is made of a thermal expansion and contraction material.

[0047] Specifically, in a cold environment, the telescopic block 4 drives the elastic cloth 5 made of shading material to shrink and form a gap so that external sunlight can enter the lower airbag 21 for photothermal conversion, and when the temperature is high, it expands and fits with the adjacent telescopic block 4 to shade the interior of the lower airbag 21, preventing external light from entering and causing unnecessary photothermal conversion, and reducing the heat dissipation pressure of the optical cable itself under high temperature conditions.

[0048] One side surface of the telescopic block 4 is convex, and the other side surface of the telescopic block 4 is concave. The two connected groups of light-shielding telescopic parts 212 are interlocked and connected with each other.

[0049] Specifically, through the concave-convex interlocking effect, the shading effect between the two adjacent groups of light-shielding telescopic parts 212 can be made more obvious. At the same time, under the condition that the amount of shrinkage deformation is limited when it is cold, when the gas in the upper airbag 22 is replenished into the lower airbag 21, the gas enters the interlocking gap between the two groups of light-shielding telescopic parts 212, and the convex part in the light-shielding telescopic part 212 is squeezed by the gas extrusion effect, thereby increasing the gap size, thereby obtaining the light-to-heat conversion effect faster.

[0050] A heat insulating layer 211 is installed on the inner wall of the lower air bag 21 away from the light shielding telescopic member 212 , and a reflective layer is connected to the surface of the heat insulating layer 211 .

[0051] Specifically, the heat insulation layer 211 can prevent the heat generated in the lower air bag 21 from being directly transferred to the surface of the optical cable body 1, thereby allowing the heat in the lower air bag 21 to be transferred to the upper air bag 22 as much as possible to ensure the melting effect;

[0052] The reflective layer can reflect light that does not pass through the aerogel column 213 to other aerogel columns 213, thereby enhancing the light-to-heat conversion effect.

[0053] The expansion direction of the lower airbag 21 is the transverse direction and is parallel to the arrangement direction of the optical cable body 1 , and the deformation direction of the upper airbag 22 is the longitudinal direction and is perpendicular to the arrangement direction of the optical cable body 1 .

[0054] Specifically, by limiting the expansion direction, the vertical expansion of the lower airbag 21 can be reduced, thereby ensuring that the lateral stretching of the lower airbag 21 is maximized, thereby ensuring that the resistance effect is maximized;

[0055] The restriction of the expansion direction of the upper airbag 22 allows the upper airbag 22 to form a slope structure as much as possible without stretching when deforming, so that the slope angle is increased as much as possible, thereby enhancing the effect of promoting shedding.

[0056] A support baffle 223 is installed at the inner center of the upper airbag 22, and a magnetic block 221 symmetrically arranged about the support baffle 223 is installed on the inner wall of the upper airbag 22. An arc-shaped elastic membrane 222 is installed on the inner wall of the upper airbag 22 away from the magnetic block 221, and a magnetic strip 224 is installed on the surface of the elastic membrane 222.

[0057] Specifically, the support baffle 223 allows the upper airbag 22 to form a slope with a triangular cross-section rather than a slope with a smoother chamfer at the top of the cross-section when it shrinks, thereby ensuring that the top of the slope is steeper rather than flat when the upper airbag 22 is deformed, reducing the possibility of snow accumulation. After the upper airbag 22 is deformed, the distance between the magnetic strip 224 and the magnetic block 221 is reduced, and the repulsive effect between the two is strengthened, which can prevent the slope structure from being further compressed and collapsed, thereby maintaining the slope state.

[0058] See also Figure 10 Before the upper airbag 22 is deformed, the magnetic strip 224 is staggered with the magnetic block 221, and the repulsive force between the magnetic strip 224 and the magnetic block 221 is 0.8N.

[0059] Specifically, the staggered arrangement can reduce the interference between the magnetic strip 224 and the magnetic block 221 before deformation, ensuring the normal maintenance of the semicircular structure, and the repulsive effect between the two is small. While maintaining the slope structure, it can avoid excessive repulsive effect causing the surface between the area outside the magnetic block 221 and the area where the magnetic block 221 is located to form a noticeable concave and convex state, thereby ensuring the smooth progress of the shedding operation.

[0060] See also Figure 9 The surface of the elastic membrane 222 away from the magnetic strip 224 is sealed with a heat-conducting block 3 , and the heat-conducting block 3 passes through the upper air bag 22 and fits with the surface of the optical cable body 1 .

[0061] Specifically, through the heat conductive block 3, the heat generated by the optical cable body 1 under high temperature conditions can be diffused and transferred to the upper air bag 22, and then transferred to the outside, thereby realizing autonomous heat dissipation of the optical cable body 1 and protecting the safe use of the optical cable body 1.

[0062] The surfaces of the upper airbag 22 and the lower airbag 21 are both covered with an anti-icing coating layer.

[0063] Specifically, the anti-icing coating layer can reduce the connection force between the upper airbag 22 and the lower airbag 21 of the ice sports, and then cooperate with the anti-snow protection component 2 to promote the rapid shedding of snow or ice objects on the surface of the optical cable.

[0064] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed in the present application based on the technical solution and its improved ideas, which should be covered by the protection scope of the present application.

Claims

1. A snow-proof bending type aerial optical cable, comprising an optical cable body (1) and an anti-snow protection component (2), characterized in that: The surface of the optical cable body (1) is sleeved with anti-snow protection components (2) at equal intervals, and the anti-snow protection components (2) include a lower air bag (21), an upper air bag (22), a through hole (23) and an isolation block (24); A semicircular lower airbag (21) and an upper airbag (22) are mounted on the surface of the optical cable body (1) in a sleeve-mounted manner, and the lower airbag (21) and the upper airbag (22) have the same radius. The interface between the lower airbag (21) and the upper airbag (22) is sealed. An isolation block (24) is mounted at the interface between the lower airbag (21) and the upper airbag (22), and a through hole (23) is provided inside the isolation block (24); A light-shielding telescopic member (212) is embedded and installed inside the lower airbag (21), and the light-shielding telescopic member (212) has the same arc length as the lower airbag (21), and an aerogel column (213) is installed inside the lower airbag (21); A support baffle (223) is installed at the inner center of the upper airbag (22), a magnetic block (221) symmetrically arranged about the support baffle (223) is installed on the inner wall of the upper airbag (22), an arc-shaped elastic membrane (222) is installed on the inner wall of the upper airbag (22) away from the magnetic block (221), and a magnetic strip (224) is installed on the surface of the elastic membrane (222); The magnetic strip (224) is staggered with the magnetic block (221) before the upper air bag (22) is deformed, and the repulsive force between the magnetic strip (224) and the magnetic block (221) is 0.5N-1N before the upper air bag (22) is deformed. A heat-conducting block (3) is sealed and installed on the surface of the elastic film (222) away from the magnetic strip (224), and the heat-conducting block (3) passes through the upper air bag (22) and is in contact with the surface of the optical cable body (1).

2. The anti-snow bending type aerial optical cable according to claim 1, characterized in that: The aerogel column (213) is made of a transparent material, and the interior of the aerogel column (213) is filled with aerogel.

3. The anti-snow bending type aerial optical cable according to claim 1, characterized in that: The light-shielding telescopic member (212) is composed of a telescopic block (4) and an elastic cloth (5); the elastic cloth (5) is fitted on the outer surface of the telescopic block (4), and the elastic cloth (5) is made of a light-shielding material; the telescopic block (4) is made of a thermally expandable and thermally contractible material.

4. The anti-snow bending type aerial optical cable according to claim 3, characterized in that: One side surface of the telescopic block (4) is convex, and the other side surface of the telescopic block (4) is concave, and the two connected groups of light-shielding telescopic parts (212) are interlocked and connected with each other.

5. The anti-snow bending type aerial optical cable according to claim 1, characterized in that: An inner wall of the lower air bag (21) away from the light-shielding telescopic member (212) is installed with a heat-insulating layer (211), and a reflective layer is connected to the surface of the heat-insulating layer (211).

6. The anti-snow bending aerial optical cable according to claim 1, characterized in that: The expansion direction of the lower airbag (21) is a transverse direction parallel to the arrangement direction of the optical cable body (1), and the deformation direction of the upper airbag (22) is a longitudinal direction perpendicular to the arrangement direction of the optical cable body (1).

7. The anti-snow bending aerial optical cable according to claim 1, characterized in that: The surfaces of the upper airbag (22) and the lower airbag (21) are both covered with an anti-icing coating layer.

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