Rat-proof, waterproof and flexible photoelectric composite cable to be monitored

Abstract

The utility model relates to the technical field of special cables, in particular to a rat-proof, waterproof and flexible photoelectric composite cable to be monitored. Comprising an outer protection layer, a plurality of strands of insulated wire cores and an optical unit surrounded by the plurality of strands of insulated wire cores in the circumferential direction are arranged in the outer protection layer, a water-blocking rope is arranged in the outer protection layer and in the gap part of the plurality of strands of insulated wire cores, the water-blocking rope is made of a water-blocking material which expands when meeting water, and when the water-blocking rope expands, the water-blocking rope is made of a water-blocking material which expands when meeting water. The outer peripheral surface of the optical unit is tightly attached to the outer peripheral surface of the insulating wire core, and the optical unit and the insulating wire core jointly form a watertight structure for preventing liquid from permeating between the optical unit and the outer protective layer in the radial direction; through the design of the cable structure and the material, the rat-proof, waterproof and flexible performance of the photoelectric composite cable is obviously enhanced, all components in the cable can be stably used in a special environment for a long time, meanwhile, the special performance of the original photoelectric composite cable is kept, and the product is suitable for being laid and used in places such as pipelines, water channels and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of special cables, in particular to a rat-proof, waterproof, flexible photoelectric composite cable to be monitored. Background Art

[0002] As a transmission device for electric energy or signals, the existing optoelectronic composite cable has a simple structure and is generally only suitable for places with good environment to provide transmission of electric energy and signals. However, in high temperature and high humidity environments, the existing products may cause short circuit or reduced service life of the cable due to water ingress into the cable core or the lack of effective monitoring of the operating temperature of the environment and the cable itself. In addition, due to different construction environments, such as after the pipeline is constructed, the cable may be damaged by rats gnawing; therefore, the existing optoelectronic composite cable lacks the ability to work stably and for a long time in harsh environments such as high temperature and high humidity. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] The utility model aims to provide a rodent-proof, waterproof, flexible photoelectric composite cable to be monitored, which can work stably and long-term in harsh environments such as high temperature and high humidity.

[0005] 2. Technical Solution

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model proposes a rodent-proof, waterproof, flexible optoelectronic composite cable to be monitored, comprising an outer protective layer, wherein a plurality of insulating cores and an optical unit surrounded by the plurality of insulating cores in the circumferential direction are arranged in the outer protective layer, and a water-blocking rope is arranged in the gap between the plurality of insulating cores in the outer protective layer, wherein the water-blocking rope is made of a water-blocking material that swells when in contact with water, and when the water-blocking rope expands, its outer peripheral surface is tightly fitted with the outer peripheral surface of the insulating core, and together with the insulating core, a watertight structure is formed in the radial direction to prevent liquid from penetrating between the optical unit and the outer protective layer.

[0008] Furthermore, in a cross-section orthogonal to the length direction, the centers of the four insulating cores are located at the four vertices of a virtual square, the four water-blocking ropes are respectively arranged at intervals between adjacent insulating cores, and the centers of the four water-blocking ropes are located at the four vertices of another virtual square, and the centers of the two virtual squares coincide with the center of the light unit.

[0009] Furthermore, the outer protective layer includes a nylon sheath layer, an armor layer, a water-blocking isolation layer and a wrapping layer which are coaxially arranged in sequence from the outside to the inside.

[0010] Furthermore, the nylon sheath layer is made of PA6 material.

[0011] Furthermore, the armor layer is a fine round galvanized steel wire armor formed by fine round galvanized steel wires with a diameter of 0.8 mm tightly fitting with a micro gap.

[0012] Furthermore, the water-blocking isolation layer is formed by extrusion of medium-density polyethylene.

[0013] Furthermore, the wrapping layer is made of a semi-conductive water-resistant tape.

[0014] Furthermore, the optical unit includes a polyolefin cushion layer, a loose tube, an optical fiber, and a water-blocking fiber paste which are coaxially arranged in sequence from the outside to the inside; wherein the polyolefin cushion layer is made of black polyethylene, the loose tube is made of polybutylene terephthalate, two optical fibers are arranged side by side in the loose tube, and the water-blocking fiber paste is evenly filled in the loose tube.

[0015] Furthermore, the insulated core is the fifth type of soft copper conductor in GB / T3956.

[0016] 3. Beneficial Effects

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model adopts a multi-layer composite structure, and can effectively prevent mice from damaging the cable by arranging a nylon sheath layer; can effectively prevent mice from biting by arranging an armor layer, and can effectively protect the inside of the cable from damage when the cable is subjected to a certain tension; can quickly swell after encountering water by arranging a water-blocking filling rope and a sheathing layer to block moisture penetration; when the water-blocking rope swells after encountering water, the outer peripheral surface of the water-blocking rope is tightly fitted with the outer peripheral surface of the insulating core, and together with the insulating core, a watertight structure is formed in the radial direction, which hinders liquid from penetrating between the optical unit and the outer protective layer, so that the optical unit can be fully isolated from moisture; in addition, the utility model significantly enhances the anti-rat, waterproof and soft performance of the optoelectronic composite cable through the design of the cable structure and materials, and all components in the cable can meet the requirements of stable and long-term use in special environments, while maintaining the unique performance of the original optoelectronic composite cable, and the product is suitable for laying and use in pipelines, canals and other places. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 yes Figure 1 A partial enlarged view of the medium light unit;

[0021] 1-outer protective layer; 101-nylon sheath layer; 102-armor layer; 103-water-blocking isolation layer; 104-wrapping layer; 2-insulated core; 3-optical unit; 301-polyolefin cushion layer; 302-loose tube; 303-optical fiber; 304-water-blocking fiber paste; 4-water-blocking rope. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] A rodent-proof, waterproof, flexible photoelectric composite cable to be monitored, please refer to Figure 1 , comprising an outer protective layer 1, a plurality of insulated wire cores 2 are arranged in the outer protective layer 1, and an optical unit 3 surrounded by the plurality of insulated wire cores 2 in a circumferential direction, the insulated wire core 2 is a fifth type of soft copper conductor in GB / T3956, which ensures the softness of the conductor, and the conductor uses tinned copper wire, and the use of a tinned layer can improve the corrosion resistance of the conductor;

[0024] Among them, the outer protective layer 1 includes a nylon sheath layer 101, an armor layer 102, a water-blocking isolation layer 103 and a wrapping layer 104 which are coaxially arranged from the outside to the inside; the nylon sheath layer 101 is made of PA6 material and is extruded on the outside of the armor layer 102, which can effectively prevent mice from damaging the cable; the armor layer 102 is a fine round galvanized steel wire armor formed by fine round galvanized steel wires with a diameter of 0.8 mm and tightly fitted with micro gaps. The armor layer 102 can effectively prevent rat bites while maintaining the flexibility of the cable. When the cable is subjected to a certain tension, it effectively protects the inside of the cable from damage; the water-blocking isolation layer 103 is extruded from medium-density polyethylene to effectively prevent water penetration; the wrapping layer 104 is made of semi-conductive water-resistant tape, which can quickly swell after encountering water to block moisture penetration and has good waterproof and anti-penetration properties.

[0025] A water-blocking rope 4 is provided in the gap part of the multiple insulated wire cores 2 within the outer protective layer 1. The water-blocking rope 4 is made of a water-blocking material that swells when it comes into contact with water. When the water-blocking rope 4 swells when it comes into contact with water, the outer peripheral surface of the water-blocking rope 4 is tightly fitted with the outer peripheral surface of the insulated wire core 2, and together with the insulated wire core 2, a watertight structure is formed in the radial direction, thereby preventing liquid from penetrating between the optical unit 3 and the outer protective layer 1, so that the optical unit 3 can be fully isolated from moisture, and is suitable for laying and use in places such as pipelines and canals.

[0026] The optical unit 3 is used to monitor the attenuation change of the optical fiber 303 to determine the internal temperature change and operation effect of the cable in the use environment. Figure 2The optical unit 3 includes a polyolefin cushion layer 301, a loose tube 302, an optical fiber 303, and a water-blocking fiber paste 304, which are coaxially arranged from the outside to the inside; wherein the polyolefin cushion layer 301 is made of black polyethylene, the loose tube 302 is made of polybutylene terephthalate, two optical fibers 303 are arranged in parallel in the loose tube 302, and the water-blocking fiber paste 304 is evenly filled in the loose tube 302. The optical fiber 303 is the model transmission medium of the optical unit 3. From the outermost layer of the cable to the inside, the optical fiber 303 is sequentially protected by the water-blocking isolation layer 103, the cladding layer 104, the water-blocking rope 4 and the watertight structure formed in the radial direction together with the insulating core 2, and the water-blocking fiber paste 304. The multi-layer protection greatly improves the waterproof performance.

[0027] In addition, in this embodiment, in a cross section orthogonal to the length direction of the cable, the centers of the four insulating cores 2 are located at the four vertices of a virtual square, the four water-blocking ropes 4 are arranged at intervals between adjacent insulating cores 2, and the centers of the four water-blocking ropes 4 are located at the four vertices of another virtual square, and the centers of the two virtual squares coincide with the center of the optical unit 3 (the center of the virtual square is the intersection of its diagonal lines). The insulating cores 2 and the water-blocking ropes 4 are symmetrically distributed, which enhances the stability of the cable structure and reduces the risk of internal damage caused by external pressure or distortion. When the water-blocking ropes 4 swell in water, the outer peripheral surface of the water-blocking ropes 4 can fully contact the outer peripheral surface of the insulating cores 2, forming a tightly encircled watertight protective structure around the optical unit 3, preventing moisture from penetrating along the internal structure of the cable, and protecting the optical unit 3 from moisture erosion.

[0028] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A rodent-proof, waterproof, flexible optoelectronic composite cable to be monitored, comprising an outer protective layer, a plurality of insulated wire cores are arranged in the outer protective layer, and an optical unit surrounded by the plurality of insulated wire cores in the circumferential direction, characterized in that: A water-blocking rope is arranged in the gap part of the multiple insulating cores within the outer protective layer. The water-blocking rope is made of a water-blocking material that swells when it comes into contact with water. When the water-blocking rope expands, its outer peripheral surface is tightly fitted with the outer peripheral surface of the insulating core, and together with the insulating core, it forms a watertight structure in the radial direction to prevent liquid from penetrating between the optical unit and the outer protective layer.

2. The rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 1, characterized in that: In a cross-section orthogonal to the length direction, the centers of the four insulating cores are located at the four vertices of a virtual square, the four water-blocking ropes are respectively arranged at intervals between adjacent insulating cores, and the centers of the four water-blocking ropes are located at the four vertices of another virtual square, and the centers of the two virtual squares coincide with the center of the light unit.

3. A rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 1 or 2, characterized in that: The outer protective layer comprises a nylon sheath layer, an armor layer, a water-blocking isolation layer and a wrapping layer which are coaxially arranged in sequence from the outside to the inside.

4. The rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 3, characterized in that: The nylon sheath layer is made of PA6.

5. The rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 3, characterized in that: The armor layer is a fine round galvanized steel wire armor formed by fine round galvanized steel wires with a diameter of 0.8 mm tightly fitting with a micro gap.

6. The rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 3, characterized in that: The water-blocking isolation layer is formed by extrusion of medium-density polyethylene.

7. The rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 3, characterized in that: The wrapping layer is made of semi-conductive water tape.

8. The rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 1, characterized in that: The optical unit includes a polyolefin cushion layer, a loose tube, an optical fiber, and a water-blocking fiber paste which are coaxially arranged in sequence from the outside to the inside; wherein the polyolefin cushion layer is made of black polyethylene, the loose tube is made of polybutylene terephthalate, two optical fibers are arranged side by side in the loose tube, and the water-blocking fiber paste is evenly filled in the loose tube.

9. The rodent-proof, waterproof, flexible photoelectric composite cable to be monitored according to claim 1, characterized in that: The insulated wire core is the fifth type of soft copper conductor specified in GB / T3956.

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