Network cable composite watertight cable

Abstract

The utility model discloses a network cable composite watertight cable, which relates to the technical field of cables, and comprises a cable core, the outer surface of the cable core is sleeved with a bunching sleeve, the periphery of the bunching sleeve is sleeved with a shielding layer, a filler is arranged between the bunching sleeve and the shielding layer, and the outer surface of the shielding layer is sleeved with an anti-extrusion structure. Through cooperative arrangement of structures such as the bunching sleeve, the shielding layer, the rubber protection ring and the buffer groove, when the peripheral side of the cable is pressed, the buffer groove close to an extrusion position can be opened under the action of pressure, the distance between the outer side wall of the rubber protection ring at the position of the cable and the shielding layer is reduced, space is vacated for deformation of the outermost protection layer of the cable, and the service life of the cable is prolonged. The protective layer on the outermost layer of the cable can be sunken after being stressed, the protective layer is prevented from being locally and rigidly extruded to be broken, and the problems that an existing cable does not have buffering performance, the cable is extremely easy to break after being extruded by gravel, underground water easily enters from a fracture of the cable, and normal use of the cable is affected are solved as far as possible.

Description

Technical Field

[0001] The present application relates to the field of cable technology, and in particular to a network cable composite watertight cable. Background Art

[0002] Composite cables are usually rope-like cables made of several or several groups of wires (at least two wires in each group). Each group of wires is insulated from each other and often twisted around a center. The entire outer layer is covered with a highly insulating covering. The cable has the characteristics of being powered inside and insulated outside. Cables are mostly installed in the air or underground or underwater for telecommunications or power transmission.

[0003] Cables generally do not have buffering properties. When cables buried underground are squeezed by gravel, the outer layer of the cable is easily broken due to the hard squeezing, causing groundwater to easily enter from the cable break, affecting the normal use of the cable. Utility Model Content

[0004] The utility model aims to solve or at least alleviate the problem that the existing cables have no buffering performance, the cables are easily broken when squeezed by gravel, and groundwater easily enters from the cable breaks, thus affecting the normal use of the cables.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A network cable composite watertight cable comprises a cable core, a cable sleeve is sleeved on the outer surface of the cable core, a shielding layer is sleeved around the cable sleeve, a filler is arranged between the cable sleeve and the shielding layer, an anti-extrusion structure is sleeved on the outer surface of the shielding layer, the outer surface of the anti-extrusion structure is covered with a protective layer, the anti-extrusion structure comprises a rubber protective ring arranged on the outer surface of the shielding layer, the rubber protective ring is a circular tubular structure, a plurality of buffer grooves are opened on the inner side wall of the rubber protective ring, and the plurality of buffer grooves are equidistantly distributed around the inner wall of the rubber protective ring, the protective layer comprises a first protective sleeve sleeved on the outer surface of the rubber protective ring, a second protective sleeve is further sleeved around the first protective sleeve, and a water-hardening gel material is filled between the first protective sleeve and the second protective sleeve.

[0007] By adopting the above technical scheme, when the protective layer is squeezed by the hard objects such as stones on the side of the cable structure buried underground, the buffer groove close to the squeezing position can be opened under the pressure, reducing the distance between the outer wall of the rubber protective ring of the cable at this position and the shielding layer, making room for the deformation of the outermost protective layer of the cable, so that the outermost protective layer of the cable can be concave after being subjected to force, preventing the protective layer from being partially squeezed and broken. When the outermost second protective sheath is damaged due to squeezing or friction, groundwater can enter the protective layer through the damaged position of the second protective sheath. The water-hardening gel material can quickly harden and solidify after contacting with water, and the damaged position of the second protective sheath is blocked to prevent groundwater from continuing to penetrate into the cable and affecting the data transmitted by the cable. The problem that the existing cable does not have buffering performance, the cable is easily broken when squeezed by gravel, and groundwater easily enters from the cable break, affecting the normal use of the cable is avoided as much as possible.

[0008] Optionally, there are multiple cable cores, and the multiple cable cores are all embedded in the inner cavity of the cable sleeve, and the inner wall of the cable sleeve is tightly fitted with the outer surface of the cable core.

[0009] By adopting the above technical solution, a cable bundle is provided to bundle multiple cable cores, thereby reducing the diameter of the entire cable, making it convenient for users to transport and lay cables.

[0010] Optionally, the shielding layer is a tubular structure formed by weaving copper wires and plastic tapes.

[0011] By adopting the above technical solution, a shielding layer with a circular tubular structure is provided for shielding, thereby avoiding electromagnetic interference as much as possible.

[0012] Optionally, a cavity is reserved between the shielding layer and the cable tie sleeve, and the filler is accommodated in the cavity, and the filler is an asbestos flame retardant layer.

[0013] By adopting the above technical solution, an asbestos flame retardant layer made of asbestos material is provided, which greatly improves the fire resistance of the overall cable structure while protecting the cable core.

[0014] Optionally, the width of the open end of the buffer groove opened on the inner side wall of the rubber protective ring is greater than the width of the bottom wall of the inner cavity of the buffer groove.

[0015] By adopting the above technical solution, the width of the opening end of the buffer groove is set larger, so that the outer wall of the rubber protective ring outside the buffer groove is squeezed, and the buffer groove can be opened under stress for buffering.

[0016] Optionally, a accommodating cavity is reserved between the first protective sleeve and the second protective sleeve, a plurality of rubber partitions are arranged inside the accommodating cavity, two sides of the rubber partitions are respectively fixedly connected to the adjacent side walls of the first protective sleeve and the second protective sleeve, and the water-hardening gel material is embedded between the rubber partitions.

[0017] By adopting the above technical solution, a rubber partition is set to divide the accommodating cavity into multiple independent chambers. When the second protective cover on the outer side of one of the chambers is damaged, the rubber partition can block the groundwater to prevent the groundwater from entering other chambers as much as possible.

[0018] In summary, the beneficial effects of this application are as follows:

[0019] 1. In the present application, by coordinating the structures such as the cable harness, the shielding layer, the rubber protective ring and the buffer groove, when the cable side is under pressure, the buffer groove near the extrusion position can open under the action of pressure, thereby reducing the distance between the outer wall of the rubber protective ring at that position of the cable and the shielding layer, making room for the deformation of the outermost protective layer of the cable, so that the outermost protective layer of the cable can be dented after being subjected to force, thereby preventing the protective layer from being partially ruptured due to hard extrusion, thereby minimizing the problem that the existing cable does not have buffering performance, the cable is easily broken when squeezed by gravel, and groundwater is easily entered from the broken end of the cable, affecting the normal use of the cable.

[0020] 2. When the outermost second protective cover is damaged due to extrusion or friction, groundwater can enter the protective layer through the damaged part of the second protective cover. The hydraulic gel material can quickly harden and solidify after contacting with water, thus sealing the damaged part of the second protective cover and preventing groundwater from continuing to penetrate into the cable and affecting the data transmitted by the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall cross-sectional structure of this application;

[0022] Figure 2 It is a schematic diagram of the connection structure of the first protective sleeve, the second protective sleeve and the rubber partition of the present application;

[0023] Figure 3 It is a schematic diagram of the connection structure of the rubber protective ring of the present application.

[0024] Explanation of the accompanying drawings: 1. Cable core; 2. Wire harness; 3. Shielding layer; 4. Cavity; 5. Asbestos flame retardant layer; 6. Rubber protective ring; 7. Buffer groove; 8. First protective cover; 9. Second protective cover; 10. Accommodating cavity; 11. Rubber partition; 12. Water-hardening gel material. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3This application is described in further detail.

[0026] See also Figure 1-3 The network cable composite watertight cable comprises a cable core 1, and a cable sheath 2 is sheathed on the outer surface of the cable core 1 for bundling the cable core 1 and reducing the overall cable diameter.

[0027] A shielding layer 3 is provided on the side of the cable harness 2, and the shielding layer 3 is provided to shield electromagnetic interference.

[0028] A filler is arranged between the cable harness 2 and the shielding layer 3, an anti-extrusion structure is arranged on the outer surface of the shielding layer 3, and a protective layer is coated on the outer surface of the anti-extrusion structure. The double protection of the anti-extrusion structure and the protective layer greatly improves the safety of the cable.

[0029] The anti-extrusion structure includes a rubber protective ring 6 disposed on the outer surface of the shielding layer 3. The rubber protective ring 6 is in a tubular structure. A plurality of buffer grooves 7 are provided on the inner wall of the rubber protective ring 6. The plurality of buffer grooves 7 are evenly distributed around the inner wall of the rubber protective ring 6. When the cable is partially extruded, the buffer grooves 7 near the extrusion position can be opened under the pressure, reducing the distance between the outer wall of the rubber protective ring 6 and the shielding layer 3 at that position of the cable, making room for the deformation of the outermost protective layer of the cable, so that the outermost protective layer of the cable can be dented after being subjected to force, thereby preventing the protective layer from being partially extruded and ruptured.

[0030] The protective layer includes a first protective sleeve 8 sleeved on the outer surface of the rubber protective ring 6, a second protective sleeve 9 is sleeved around the first protective sleeve 8, and a hydraulic gel material 12 is filled between the first protective sleeve 8 and the second protective sleeve 9. The hydraulic gel material 12 can be quick-drying cement. When the second protective sleeve 9 is damaged due to external extrusion, groundwater will enter the protective layer through the damaged position of the second protective sleeve 9. The hydraulic gel material 12 can quickly harden and solidify after contacting the water, and the damaged position of the second protective sleeve 9 is blocked to prevent the groundwater from continuing to penetrate into the cable and affecting the data transmission of the cable.

[0031] Reference Figure 1 The number of cable cores 1 is multiple, and the multiple cable cores 1 are all embedded in the inner cavity of the cable harness 2, and the inner wall of the cable harness 2 is tightly fitted with the outer surface of the cable core 1. The cable harness 2 is used to bundle the multiple cable cores 1, thereby reducing the diameter of the entire cable, which is convenient for users to transport and lay cables.

[0032] Reference Figure 1 The shielding layer 3 is a tubular structure formed by weaving copper wire and plastic tape, and the coverage of the copper wire is not less than 80%. The shielding layer 3 with a circular tubular structure is used for shielding to avoid electromagnetic interference as much as possible.

[0033] Reference Figure 2A cavity 4 is provided between the shielding layer 3 and the cable sheath 2, and a filler is contained inside the cavity 4, and the filler is an asbestos flame retardant layer 5 having fireproof and heat-insulating effects. The asbestos flame retardant layer 5 made of asbestos material is provided, which not only protects the cable core 1, but also greatly improves the fireproof performance of the overall cable structure.

[0034] Reference Figure 1 and Figure 3 The width of the buffer groove 7 opened on the inner wall of the rubber protective ring 6 is greater than the width of the bottom wall of the inner cavity of the buffer groove 7. The width of the buffer groove 7 is set larger, so that the outer wall of the rubber protective ring 6 outside the buffer groove 7 is squeezed, and the buffer groove 7 can be opened under stress for buffering.

[0035] Reference Figure 2 A receiving chamber 10 is provided between the first protective sleeve 8 and the second protective sleeve 9. A plurality of rubber partitions 11 are provided inside the receiving chamber 10. The two sides of the rubber partitions 11 are respectively fixedly connected to the side walls of the first protective sleeve 8 and the second protective sleeve 9 on one side. The hydraulic gel material 12 is embedded between the rubber partitions 11. The rubber partitions 11 are provided to separate the receiving chamber 10 into a plurality of independent chambers. When the second protective sleeve 9 outside one of the chambers is damaged, the rubber partitions 11 can block the groundwater and prevent the groundwater from entering other chambers as much as possible.

[0036] The implementation principle of the present application is as follows: when the protective layer is squeezed by the hard objects such as stones on the surrounding side of the cable structure buried underground, the buffer groove 7 near the squeezing position can be opened under the pressure, reducing the distance between the outer wall of the rubber protective ring 6 of the cable at this position and the shielding layer 3, making room for the deformation of the outermost protective layer of the cable, so that the outermost protective layer of the cable can be concave after being subjected to force, preventing the protective layer from being partially squeezed and broken. When the outermost second protective sheath 9 is damaged due to squeezing or friction, groundwater can pass through the damaged position of the second protective sheath 9 and enter the protective layer. The hydraulic gel material 12 can quickly harden and solidify after contacting with water, and the damaged position of the second protective sheath 9 is blocked to prevent groundwater from continuing to penetrate into the cable and affecting the data transmitted by the cable, thereby avoiding as much as possible the problem that the existing cable does not have buffering performance, the cable is very easy to break after being squeezed by gravel, and groundwater is easy to enter from the cable break, affecting the normal use of the cable.

[0037] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. Network cable composite watertight cable, characterized in that: The invention comprises a cable core (1), wherein a cable harness (2) is sleeved on the outer surface of the cable core (1), a shielding layer (3) is sleeved around the cable harness (2), a filler is arranged between the cable harness (2) and the shielding layer (3), an anti-extrusion structure is sleeved on the outer surface of the shielding layer (3), the outer surface of the anti-extrusion structure is covered with a protective layer, the anti-extrusion structure comprises a rubber protective ring (6) arranged on the outer surface of the shielding layer (3), the rubber protective ring (6) is a circular tube structure, a plurality of buffer grooves (7) are opened on the inner side wall of the rubber protective ring (6), and the plurality of buffer grooves (7) are equidistantly distributed around the inner wall of the rubber protective ring (6), the protective layer comprises a first protective sleeve (8) sleeved on the outer surface of the rubber protective ring (6), a second protective sleeve (9) is sleeved around the first protective sleeve (8), and a hydraulic gel material (12) is filled between the first protective sleeve (8) and the second protective sleeve (9).

2. The network wire composite watertight cable according to claim 1, characterized in that: There are a plurality of cable cores (1), and the plurality of cable cores (1) are all embedded in the inner cavity of the cable harness (2), and the inner wall of the cable harness (2) is tightly fitted to the outer surface of the cable core (1).

3. The network wire composite watertight cable according to claim 1, characterized in that: The shielding layer (3) is a tubular structure formed by braiding copper wires and plastic tapes.

4. The network wire composite watertight cable according to claim 1, characterized in that: A cavity (4) is provided between the shielding layer (3) and the cable harness (2), and the filler is accommodated inside the cavity (4), wherein the filler is an asbestos flame retardant layer (5).

5. The network wire composite watertight cable according to claim 1, characterized in that: The width of the opening end of the buffer groove (7) provided on the inner wall of the rubber protective ring (6) is greater than the width of the bottom wall of the inner cavity of the buffer groove (7).

6. The network wire composite watertight cable according to claim 5, characterized in that: A receiving cavity (10) is provided between the first protective sleeve (8) and the second protective sleeve (9), and a plurality of rubber partitions (11) are provided inside the receiving cavity (10). Two sides of the rubber partitions (11) are respectively fixedly connected to the side walls of the first protective sleeve (8) and the second protective sleeve (9) on one side, and the hydraulic gel material (12) is embedded between the rubber partitions (11).

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