An optical cable that can melt ice

Abstract

The present invention discloses an optical cable capable of melting ice, comprising an optical cable body, wherein the optical cable body comprises an outer sheath, an armor layer is arranged inside the outer sheath, a heating layer is arranged between the outer sheath and the armor layer, a heat insulation layer is arranged inside the armor layer, a core wire is arranged inside the heat insulation layer, the core wire comprises a plurality of optical fiber bundles, a temperature sensing wire and a shielding wire, and the outer side wall surface of the outer sheath is covered with an anti-corrosion coating. The present invention has a simple structure and a reasonable design. The optical cable has a self-heating and temperature-raising function, and can effectively melt ice ridges formed on the surface of the optical cable in cold climates to avoid the adverse effects of icing.

Description

Technical Field

[0001] The invention relates to the technical field of optical cables, in particular to an optical cable capable of melting ice. Background Art

[0002] Optical fiber cable is manufactured to meet the performance specifications of optics, mechanics or environment. It is a communication cable assembly that uses one or more optical fibers placed in a sheath as the transmission medium and can be used individually or in groups. Optical cable is mainly composed of optical fiber, plastic protective sleeve and plastic sheath. Optical cable is a communication line that uses a certain number of optical fibers to form a cable core in a certain way and is covered with a sheath to achieve optical signal transmission. In the winter in the north, because it often snows, large and heavy ice often freezes on the overhead optical cable line, increasing the gravity load of the optical cable, causing the optical cable to bear a large tensile force (drooping force), causing the optical fiber inside the optical cable to be strained, which will cause additional attenuation at the least, and in severe cases, it will cause the optical cable to break or seriously affect the life of the optical cable. Summary of the invention

[0003] The object of the present invention is to provide an optical cable capable of melting ice, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An optical cable capable of melting ice comprises an optical cable body, wherein the optical cable body comprises an outer sheath, an armor layer is arranged inside the outer sheath, a heating layer is arranged between the outer sheath and the armor layer, a heat insulation layer is arranged inside the armor layer, a core wire is arranged inside the heat insulation layer, the core wire comprises a plurality of optical fiber bundles, a temperature sensing wire and a shielding wire, and the outer side wall surface of the outer sheath is covered with an anti-corrosion coating.

[0006] Preferably, the heating layer is an electric heating wire evenly wrapped around the central axis of the optical cable body, the armor layer is filled with a flame retardant filler, the flame retardant filler is any one or a mixture of several of aluminum hydroxide, magnesium hydroxide, hydrotalcite, and brucite, and the thermal insulation layer is Teflon.

[0007] Preferably, the inner wall surface of the armor layer is coated with a thermal insulation coating, and the shielding wire is a grounded metal wire.

[0008] Preferably, the temperature sensing line is a multimode temperature sensing optical fiber, and the optical fiber bundle is a 24-core G.625D optical fiber.

[0009] Preferably, the outer periphery of the optical fiber bundle is sheathed with an FRP engineering plastic sleeve, the inner wall surface of the FRP engineering plastic sleeve is covered with an insulating layer, the insulating layer is a high-density polyethylene layer, and the inside of the FRP engineering plastic sleeve is filled with water-blocking grease.

[0010] Preferably, the interior of the heat insulation layer is filled with a buffer filler, and the buffer filler is a high temperature resistant foam.

[0011] Preferably, a reinforcement layer is provided between the outer sheath and the armor layer, and the reinforcement layer is a flame-retardant reinforced fiber braided layer.

[0012] Preferably, the outer sheath is a composite sheath of high-density polyethylene and aluminum tape, the aluminum tape is adhered to the inner wall of the high-density polyethylene sheath, and the anti-corrosion coating is a mixed coating of epoxy resin, polyamide resin and perchlorethylene paint.

[0013] Preferably, both ends of the optical cable body are respectively connected to a junction box, the junction box includes a box body and a box cover, a controller and a power module are installed inside the box body, a solar panel is installed on the top of the box cover, the controller and the solar panel are both electrically connected to the power module, both ends of the temperature sensing line and the electric heating wire extend to the inside of the junction box at both ends of the optical cable body respectively, one end of the temperature sensing line is connected to an optical signal source, and the other end is connected to an optical receiver, the optical signal source and the optical receiver are both electrically connected to the controller, one end of the electric heating wire is short-circuited, and the other end is electrically connected to the controller, a temperature measurement module is provided in the controller, the temperature measurement module is used to calculate the temperature monitored by the temperature sensing line according to the signal of the optical receiver, and judge whether the electric heating wire needs to be powered according to the temperature value, and a communication module is also provided in the controller, the communication module is used for the staff to remotely view the monitored temperature value and manually operate the power on and off of the electric heating wire.

[0014] Preferably, a partition is provided at the bottom end of the box body, a cavity is formed between the partition and the inner wall of the box body, a moisture-proof bag is placed in the cavity, the moisture-proof bag is filled with a moisture-proof agent, a plurality of through holes are provided on the surface of the partition, a slot corresponding to the side wall of the box body and the partition is provided at the bottom end of the box cover, and a water-absorbing and swelling sealing pad is bonded to the inner wall surface of the slot.

[0015] Compared with the prior art, the invention has the following beneficial effects: by arranging an electric heating wire, when the external environment is too cold and the surface of the optical cable is frozen, heat is generated by the electric heating wire, and the temperature rise causes the ice layer to melt, thereby avoiding the adverse effects of ice on the optical cable; the flame-retardant filler can prevent the electric heating wire from being too high in temperature and causing the material to spontaneously combust, and the heat insulation layer has a heat barrier effect to prevent excessive heat from being transferred to the core wire; the heat insulation coating guides the heat, so that the heat of the electric heating wire can be quickly and evenly transferred outward; the FRP engineering plastic sleeve protects the optical fiber bundle, and the insulating layer and the water-blocking grease enhance the insulation and waterproof properties; the buffer filler can mitigate the damage of the core wire caused by external impact; the reinforcement layer improves the overall structural strength; the anti-corrosion coating enhances the waterproofness and corrosion resistance of the optical cable, so that the optical cable has better weather resistance and can be set in the outdoor environment for a longer time; the moisture-proof agent in the cavity can absorb moisture inside the junction box to avoid excessive moisture affecting the life of the electronic components, and the card slot and the water-absorbing and swelling sealing gasket improve the sealing of the connection between the box cover and the box body to prevent external impurities from entering the box body. The invention has a simple structure and a reasonable design. The optical cable has a self-heating temperature-raising function, and can effectively melt ice ridges formed on the surface of the optical cable in cold climates, thereby avoiding the adverse effects of icing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an optical cable capable of melting ice;

[0017] Figure 2 A schematic diagram of the structure of a connector box in an optical cable capable of melting ice;

[0018] Figure 3 A schematic diagram of the principle of an optical cable that can melt ice.

[0019] In the figure: 1-outer sheath, 2-armor layer, 3-insulation layer, 4-optical fiber bundle, 5-heating layer, 6-flame retardant filler, 7-temperature sensing line, 8-shielding line, 9-buffer filler, 10-temperature measurement module, 11-reinforcement layer, 12-communication module, 13-anti-corrosion coating, 14-box body, 15-box cover, 16-optical signal source, 17-optical receiver, 18-controller, 19-power module, 20-moisture-proof bag, 21-solar panel, 22-partition, 23-cavity, 24-card slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1 The present invention provides a technical solution: an optical cable capable of melting ice, comprising an optical cable body, the optical cable body comprising an outer sheath 1, an armor layer 2 is arranged inside the outer sheath 1, a heating layer 5 is arranged between the outer sheath 1 and the armor layer 2, a heat insulation layer 3 is arranged inside the armor layer 2, a core wire is arranged inside the heat insulation layer 3, the core wire comprises a plurality of optical fiber bundles 4, a temperature sensing wire 7 and a shielding wire 8, the outer wall surface of the outer sheath 1 is covered with an anti-corrosion coating 13, by arranging the heating layer 5, when the external environment is too cold and the surface of the optical cable is frozen, heat is generated by the heating layer 5, and the temperature rise causes the ice layer to melt, thereby avoiding the adverse effects of ice on the optical cable.

[0022] The heating layer 5 is an electric heating wire evenly wrapped around the central axis of the optical cable body. The armor layer 2 is filled with a flame retardant filler 6, which is any one or a mixture of aluminum hydroxide, magnesium hydroxide, hydrotalcite, and brucite. The thermal insulation layer 3 is Teflon. The flame retardant filler 6 can prevent the heating layer 5 from being overheated and causing spontaneous combustion of the material, while the thermal insulation layer 3 has a heat blocking effect to prevent excessive heat from being transferred to the core wire.

[0023] The inner wall surface of the armor layer 2 is coated with a thermal insulation coating, and the shielding wire 8 is a grounded metal conductor. The thermal insulation coating guides the heat so that the heat of the heating layer 5 can be quickly and evenly conducted outward.

[0024] The temperature sensing line 7 is a multi-mode temperature sensing optical fiber, and the optical fiber bundle 4 is a 24-core G.625D optical fiber.

[0025] The outer periphery of the optical fiber bundle 4 is sheathed with an FRP engineering plastic sleeve, the inner wall surface of the FRP engineering plastic sleeve is covered with an insulating layer, the insulating layer is a high-density polyethylene layer, and the inside of the FRP engineering plastic sleeve is filled with water-blocking grease. The FRP engineering plastic sleeve protects the optical fiber bundle 4, and the insulating layer and the water-blocking grease enhance the insulation and waterproof properties.

[0026] The heat insulation layer 3 is filled with a buffer filler 9, which is a high temperature resistant foam. The buffer filler 9 can reduce the damage of the core wire caused by external impact.

[0027] A reinforcement layer 11 is provided between the outer sheath 1 and the armor layer 2 , and the reinforcement layer 11 is a flame-retardant reinforcement fiber braided layer.

[0028] The outer sheath 1 is a composite sheath of high-density polyethylene and aluminum tape, and the aluminum tape is pasted on the inner wall of the high-density polyethylene sheath. The anti-corrosion coating 13 is a mixed coating of epoxy resin, polyamide resin, and perchlorethylene paint. The anti-corrosion coating 13 enhances the waterproofness and corrosion resistance of the optical cable, making the optical cable have better weather resistance and can be set in an outdoor environment for a longer time.

[0029] The two ends of the optical cable body are respectively connected with a joint box, and the joint box includes a box body 14 and a box cover 15. A controller 18 and a power module 19 are installed inside the box body 14. A solar panel 21 is installed on the top of the box cover 15. The controller 18 and the solar panel 21 are both electrically connected to the power module 19. The two ends of the temperature sensing line 7 and the heating layer 5 extend to the inside of the joint box at both ends of the optical cable body respectively. One end of the temperature sensing line 7 is connected to the optical signal source 16, and the other end is connected to the optical receiver 17. The optical signal source 16 and the optical receiver 17 are both electrically connected to the controller 18. One end of the heating layer 5 is short-circuited, and the other end is electrically connected to the controller 18. A temperature measurement module 10 is provided in the controller 18. The temperature measurement module 10 is used to calculate the temperature monitored by the temperature sensing line 7 according to the signal of the optical receiver 17, and to judge whether the heating layer 5 needs power supply according to the temperature value. A communication module 12 is also provided in the controller 18. The communication module 12 is used for the staff to remotely view the monitored temperature value and manually operate the power on and off of the heating layer 5.

[0030] A partition 22 is provided at the bottom end of the box body 14, and a cavity 23 is formed between the partition 22 and the inner wall of the box body 14. A moisture-proof bag 20 is placed in the cavity 23, and the moisture-proof bag 20 is filled with a moisture-proof agent. A plurality of through holes are provided on the surface of the partition 22. A card slot 24 corresponding to the side wall of the box body 14 and the partition 22 is provided at the bottom end of the box cover 15, and a water-absorbing and expanding sealing pad is bonded to the inner wall surface of the card slot 24. The moisture-proof agent in the cavity 23 can absorb moisture inside the junction box to prevent excessive moisture from affecting the life of the electronic components. The card slot 24 and the water-absorbing and expanding sealing pad improve the sealing of the connection between the box cover 15 and the box body 14 to prevent external impurities from entering the box body.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An optical cable capable of melting ice, comprising an optical cable body, characterized in that: The optical cable body comprises an outer sheath (1), an armor layer (2) is arranged inside the outer sheath (1), a heating layer (5) is arranged between the outer sheath (1) and the armor layer (2), a heat insulation layer (3) is arranged inside the armor layer (2), a core wire is arranged inside the heat insulation layer (3), the core wire comprises a plurality of optical fiber bundles (4), a temperature sensing wire (7) and a shielding wire (8), the outer wall surface of the outer sheath (1) is covered with an anti-corrosion coating (13), and the heating layer (5) is an annular The electric heating wire is evenly wrapped around the central axis of the optical cable body, the armor layer (2) is filled with a flame retardant filler (6), and the flame retardant filler (6) is any one of aluminum hydroxide, magnesium hydroxide, hydrotalcite, and brucite, or a mixture of several thereof. The thermal insulation layer (3) is Teflon, and the inner wall surface of the armor layer (2) is coated with a thermal insulation coating. The shielding wire (8) is a grounded metal wire, the temperature sensing wire (7) is a multi-mode temperature sensing optical fiber, and the optical fiber bundle (4) is a 24-core G.625D optical fiber, the outer periphery of the optical fiber bundle (4) is sheathed with an FRP engineering plastic sleeve, the inner wall surface of the FRP engineering plastic sleeve is covered with an insulating layer, the insulating layer is a high-density polyethylene layer, the inside of the FRP engineering plastic sleeve is filled with water-blocking grease, the inside of the heat insulation layer (3) is filled with a buffer filler (9), the buffer filler (9) is a high-temperature resistant foam, a reinforcement layer (11) is arranged between the outer sheath (1) and the armor layer (2), the reinforcement layer (11) is a flame-retardant reinforcement fiber braided layer, the outer sheath (1) is a high-density polyethylene and aluminum tape composite sheath, the aluminum tape is pasted on the high-density polyethylene The inner wall of the olefin sleeve is provided with an anti-corrosion coating (13) which is a mixed coating of epoxy resin, polyamide resin and perchlorethylene paint. The two ends of the optical cable body are respectively connected with a joint box, the joint box comprises a box body (14) and a box cover (15). A controller (18) and a power module (19) are installed inside the box body (14). A solar cell panel (21) is installed on the top of the box cover (15). The controller (18) and the solar cell panel (21) are both electrically connected to the power module (19). The two ends of the temperature sensing wire (7) and the electric heating wire respectively extend to the inside of the joint boxes at the two ends of the optical cable body. One end of the electric heating wire (7) is connected to an optical signal source (16), and the other end is connected to an optical receiver (17). The optical signal source (16) and the optical receiver (17) are both electrically connected to a controller (18). One end of the electric heating wire is short-circuited, and the other end is electrically connected to the controller (18). The controller (18) is provided with a temperature measurement module (10). The temperature measurement module (10) is used to calculate the temperature monitored by the temperature sensing wire (7) according to the signal of the optical receiver (17), and to determine whether the electric heating wire needs power supply according to the temperature value. The controller (18) is also provided with a communication module (12). The communication module The block (12) is used for the staff to remotely check the monitored temperature value and manually operate the power on and off of the electric heating wire. The bottom end of the box body (14) is provided with a partition (22). A cavity (23) is formed between the partition (22) and the inner wall of the box body (14). A moisture-proof bag (20) is placed in the cavity (23). The moisture-proof bag (20) is filled with a moisture-proof agent. A plurality of through holes are provided on the surface of the partition (22). The bottom end of the box cover (15) is provided with a card slot (24) corresponding to the side wall of the box body (14) and the partition (22). A water-absorbing and swelling sealing pad is bonded to the inner wall surface of the card slot (24).

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