Low-dielectric-loss high-weather-resistance filling rope

Abstract

The utility model discloses a low dielectric loss high weatherproof filling rope, including rope core, weatherproof layer and buffer layer, the periphery of rope core is covered with the buffer layer, and the weatherproof layer is filled between the buffer layer and rope core, the buffer layer is internally provided with a plurality of insertion slots in a surrounding manner; according to the utility model, the periphery of the stranded rope core is coated with the buffer layer which is made of polypropylene and has the thickness of 0.05-0.08 mm, so that buffer elasticity is provided for the filling rope, and the phenomenon that the filling rope is adhered to the moisture-proof layer due to the broken buffer layer is prevented; the functional belts made of low-dielectric-constant resin materials are embedded and installed in the multiple insertion grooves of the buffer layer, so that the filling rope meets the requirement for low dielectric loss, the weather-proof layer made of polyurethane materials is filled between the rope core and the buffer layer, it is guaranteed that the rope core is tightly connected with the buffer layer, meanwhile, all-around protection is provided for the rope core, and the service life of the rope core is prolonged. Interference of the external environment is effectively isolated, weather resistance is excellent, and the service life of the filling rope is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a low dielectric loss and high weather resistance filling rope. Background Art

[0002] Cables include power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. Filling rope is an important component of filling cable. It can increase the mechanical strength of the cable and make the cable more durable.

[0003] In current technology, cable filling ropes are mostly made of PP (polypropylene). Some manufacturers use PBT (PBT plastic refers to a type of plastic composed mainly of polybutylene terephthalate) as the skin and PE (polyethylene) as the core of the foam filling rope. The disadvantage of this foam filling rope is that when the PBT skin is too thin, it is easy to break the skin, causing the filling rope to adhere to the moisture barrier, affecting the cable opening. When the PBT skin is too thick, water seepage is easy to occur, causing water seepage in the cross section of the optical cable.

[0004] To this end, a low dielectric loss and high weather resistance filling rope is proposed, which has the advantages of low dielectric loss, high weather resistance and preventing the filling rope from adhering to the moisture barrier, thereby solving the problems in the above-mentioned background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a low dielectric loss and high weather resistance filling rope.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low dielectric loss and high weather-resistant filling rope, comprising a rope core, a weather-resistant layer and a buffer layer, the outer periphery of the rope core is coated with a buffer layer, and the weather-resistant layer is filled between the buffer layer and the rope core, a plurality of installation slots are opened around the inside of the buffer layer, and a functional belt is embedded and installed in each installation slot, a plurality of strip-shaped notches are opened on the outer surface of the buffer layer through the installation slot, and a sealing strip is bonded to each strip-shaped notch with an adhesive surface.

[0007] As a further description of the above technical solution: the rope core is formed by twisting multiple strands of PP wires.

[0008] As a further description of the above technical solution: the material of the weather-resistant layer is polyurethane, and the weather-resistant layer is arranged in the gap between the buffer layer and the rope core.

[0009] As a further description of the above technical solution: the functional band is made of a low dielectric constant resin material, and the cross-section of the functional band is circular.

[0010] As a further description of the above technical solution: the material of the buffer layer is polypropylene, and the thickness of the buffer layer is 0.05-0.08 mm.

[0011] As a further description of the above technical solution: the length of the buffer layer and the functional belt is the same as the length of the rope core.

[0012] The utility model has the following beneficial effects:

[0013] In the utility model, a buffer layer made of polypropylene with a thickness of 0.05-0.08mm is coated on the outer periphery of the twisted rope core to provide buffer elasticity for the filling rope while preventing the phenomenon of adhesion between the filling rope and the moisture-proof layer caused by the breaking of the buffer layer. Functional belts made of low dielectric constant resin material are embedded and installed in several installation slots of the buffer layer, so that the filling rope meets the requirement of low dielectric loss. A weather-resistant layer of polyurethane material is filled between the rope core and the buffer layer to provide all-round protection for the rope core while ensuring a close connection with the buffer layer, effectively isolating interference from the external environment, and having excellent weather resistance, which is conducive to extending the service life of the filling rope. At the same time, strip-shaped notches are opened on the outer surface of the buffer layer corresponding to the installation slots to facilitate efficient assembly of the functional belt, and a sealing strip with a rubber surface is embedded and installed in the strip-shaped notch to achieve sealing of the strip-shaped notch, which is conducive to increasing the reliability of the installation of the functional belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of a low dielectric loss and high weather resistance filling rope of the utility model;

[0015] Figure 2 for Figure 1 A magnified view of the structure of A;

[0016] Figure 3 This is a schematic diagram of the buffer layer structure of a low dielectric loss and high weather resistance filling rope of the utility model.

[0017] Legend:

[0018] 1. Rope core; 2. Weather-resistant layer; 3. Buffer layer; 4. Functional belt; 5. Installation slot; 6. Strip notch; 7. Sealing strip. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] According to an embodiment of the utility model, a low dielectric loss and high weather resistance filling rope is provided.

[0021] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-3 As shown, according to an embodiment of the utility model, a low dielectric loss and high weather-resistant filling rope comprises a rope core 1, a weather-resistant layer 2 and a buffer layer 3, the outer periphery of the rope core 1 is coated with the buffer layer 3, and the weather-resistant layer 2 is filled between the buffer layer 3 and the rope core 1, a plurality of installation slots 5 are opened around the inside of the buffer layer 3, and a functional belt 4 is embedded and installed in each installation slot 5, a plurality of strip-shaped notches 6 are opened on the outer surface of the buffer layer 3 through the installation slot 5, and a sealing strip 7 is bonded with a rubber surface in each strip-shaped notch 6, wherein the production process of the buffer layer 3 can be coated by a cable extruder, and the weather-resistant layer 2 of polyurethane material is filled into the gap between the buffer layer 3 and the rope core 1 during the extrusion molding stage of the buffer layer 3, and the strip-shaped notches 6 are opened on the outer surface of the buffer layer 3 corresponding to the installation slot 5, so as to efficiently assemble the functional belt 4, and the sealing strip 7 with a rubber surface is embedded and installed in the strip-shaped notch 6 to achieve the blocking of the strip-shaped notch 6, which is conducive to increasing the reliability of the installation of the functional belt 4;

[0022] In one embodiment, the rope core 1 is formed by twisting a plurality of PP wires.

[0023] In one embodiment, the material of the weather-resistant layer 2 is polyurethane, and the weather-resistant layer 2 is arranged in the gap between the buffer layer 3 and the rope core 1. The bubble structure of the weather-resistant layer 2 made of polyurethane can adaptively expand and contract when the rope core 1 is subjected to cooling and heating, so as to cope with changes in the external environment and achieve the purpose of weather resistance.

[0024] In one embodiment, the functional band 4 is made of a low dielectric constant resin material, and the cross-section of the functional band 4 is circular. The functional band 4 made of a low dielectric constant resin material can be combined with the buffer layer 3, and has the advantage of low dielectric loss while protecting the rope core 1.

[0025] In one embodiment, the material of the buffer layer 3 is polypropylene, and the thickness of the buffer layer 3 is 0.05-0.08 mm. The buffer layer 3 with a thickness of 0.05-0.08 mm is used, which is thin and thick. Compared with the existing non-skinned filling rope or the low-thickness buffer layer 3, it has the advantage of preventing skin breakage while meeting the protection effect.

[0026] In one embodiment, the lengths of the buffer layer 3 and the functional band 4 are the same as the length of the rope core 1 , that is, the functions attached to the buffer layer 3 and the functional band 4 fully cover the rope core 1 .

[0027] Working principle:

[0028] When in use, a buffer layer 3 made of polypropylene with a thickness of 0.05-0.08mm is coated on the outer periphery of the twisted rope core 1 to provide buffer elasticity for the filling rope while preventing the filling rope from adhering to the moisture-barrier layer due to the breaking of the buffer layer 3. Functional belts 4 made of low dielectric constant resin material are embedded and installed in several installation slots 5 of the buffer layer 3, so that the filling rope meets the requirement of low dielectric loss. A weather-resistant layer 2 of polyurethane material is filled between the rope core 1 and the buffer layer 3 to provide all-round protection for the rope core 1 while ensuring a close connection with the buffer layer 3, effectively isolating the interference of the external environment, having excellent weather resistance, and being beneficial to extending the service life of the filling rope. At the same time, a strip-shaped notch 6 is opened on the outer surface of the buffer layer 3 corresponding to the installation slot 5 to facilitate the efficient assembly of the functional belt 4, and a sealing strip 7 with a rubber surface is embedded and installed in the strip-shaped notch 6 to achieve sealing of the strip-shaped notch 6, which is beneficial to increasing the reliability of the installation of the functional belt 4.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low dielectric loss and high weather resistance filling rope, comprising a rope core (1), a weather resistance layer (2) and a buffer layer (3), characterized in that: The outer periphery of the rope core (1) is coated with a buffer layer (3), and a weather-resistant layer (2) is filled between the buffer layer (3) and the rope core (1); a plurality of installation slots (5) are arranged around the inside of the buffer layer (3), and a functional belt (4) is embedded and installed in each installation slot (5); a plurality of strip-shaped notches (6) are arranged on the outer surface of the buffer layer (3) through the installation slots (5), and a sealing strip (7) is bonded to each strip-shaped notch (6) by means of an adhesive surface.

2. A low dielectric loss and high weather resistance filling rope according to claim 1, characterized in that: The rope core (1) is formed by twisting a plurality of PP wire strands.

3. The low dielectric loss and high weather resistance filling rope according to claim 1, characterized in that: The material of the weather-resistant layer (2) is polyurethane, and the weather-resistant layer (2) is arranged in the gap between the buffer layer (3) and the rope core (1).

4. The low dielectric loss and high weather resistance filling rope according to claim 1, characterized in that: The functional band (4) is made of a low dielectric constant resin material, and the cross section of the functional band (4) is circular.

5. The low dielectric loss and high weather resistance filling rope according to claim 1, characterized in that: The material of the buffer layer (3) is polypropylene, and the thickness of the buffer layer (3) is 0.05-0.08 mm.

6. The low dielectric loss and high weather resistance filling rope according to claim 1, characterized in that: The lengths of the buffer layer (3) and the functional band (4) are the same as the length of the rope core (1).

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