CN219163038U

CN219163038U - Rubber jacketed flexible cable for photoelectric composite communication

Info

Publication number: CN219163038U
Application number: CN202121918735.4U
Authority: CN
Inventors: 钱章兴; 王兵兵
Original assignee: Shanghai Lanhao Electric Power Co ltd
Current assignee: Shanghai Lanhao Electric Power Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2023-06-09
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a rubber jacketed flexible cable for photoelectric composite communication, which comprises: cable core and crowded cladding at the outside inoxidizing coating of cable core, the cable core includes: the three composite wire cores are twisted together by taking the central tensile optical fiber unit as a center, so that the three composite wire cores are tangent to each other, and the three side gap optical fiber units are respectively twisted on the outer sides of the three composite wire cores, so that each side gap optical fiber unit is tangent to the two composite wire cores; the rubber jacketed flexible cable for photoelectric composite communication has strong bending resistance and tensile resistance, can be applied to frequent small-radius bending occasions, has small outer diameter and light weight, is convenient to wire, can realize communication and power supply at the same time, and is particularly suitable for frequent bending mobile occasions.

Description

Rubber jacketed flexible cable for photoelectric composite communication

Technical Field

The utility model relates to an optical fiber composite communication cable for industry, in particular to a rubber jacketed flexible cable for photoelectric composite communication.

Background

Currently, with the rapid development of optical communication, the optical communication is widely applied to various communication fields, and higher requirements are also put on an optical cable as a device transmission nerve. The optical-electrical hybrid cable has wider application environment because one cable can be used for transmitting optical signals and electrical signals at the same time. Moreover, as optical transmission and electrical transmission are two different types of transmission modes, mutual interference can not occur in the transmission process.

However, the bending resistance and tensile performance of the existing photoelectric hybrid cable are not ideal, and the cable is not suitable for mobile occasions with frequent bending. As disclosed in chinese patent publication CN108919447a, 11 and 30 in 2018, a hybrid optical cable, the cable core includes a plurality of optical fiber units, a plurality of electric power units, and a reinforcing core, the plurality of optical fiber units and the plurality of electric power units are staggered around the reinforcing core, and a water blocking unit is filled between each optical fiber unit and an adjacent electric power unit; the belting layer is coated outside the cable core, and the sheath layer is coated outside the belting layer. Therefore, the reinforcing core improves bending and tensile properties of the cable core in the middle, but the outer diameter of the cable increases, resulting in poor bending resistance of the cable.

Disclosure of Invention

The utility model aims to solve the problems, and provides the rubber jacketed flexible cable for photoelectric composite communication, which has strong bending resistance and tensile resistance, can be applied to frequent small-radius bending occasions, has small outer diameter of the cable, is light in weight and convenient to wire, can realize communication and power supply at the same time, and is particularly suitable for frequent bending mobile occasions.

In order to achieve the above object, the present utility model adopts the following technical scheme: a rubber jacketed flexible cable for photoelectric composite communication, comprising: cable core and crowded cladding at the outside inoxidizing coating of cable core, the cable core includes: the three composite wire cores are twisted together by taking the central tensile optical fiber unit as a center, so that the three composite wire cores are tangent to each other, and the three side gap optical fiber units are respectively twisted on the outer sides of the three composite wire cores, so that each side gap optical fiber unit is tangent to the two composite wire cores;

the central tensile optical fiber unit includes: the optical fiber unit and the buffer tensile layer are coated on the optical fiber unit, and the buffer tensile layer is made of a plurality of Kevlar fibers longitudinally pulled out of the optical fiber unit;

the composite wire core consists of a wire core, a high-elasticity ethylene propylene rubber sheath and a copper wire bidirectional cross braiding layer which are sequentially coated outside the wire core; the wire core is formed by twisting two electric communication units and two optical fiber units, so that the two electric communication units are tangent, the two optical fiber units are arranged on two sides of the two electric communication wires, and each optical fiber unit is tangent to the two electric communication wires.

Further, the twisting pitch diameter ratio of the wire core is 3.5-6.5 times.

Further, the side gap optical fiber unit is composed of an optical fiber unit and an armored stainless steel tube surrounding the optical fiber unit.

Further, the optical fiber units are a plurality of single mode optical fibers or multimode optical fibers.

Further, the electric communication unit is composed of an electric communication conductor and a skin-foam skin physical foaming polyethylene layer extruded outside the electric communication conductor.

Further, the protective layer is made of high-strength low-smoke halogen-free flame retardant rubber, the strength is greater than 13MPa, and the oxygen index is greater than 35.

Further, the buffer tensile layer of the central optical fiber has a tensile resistance greater than 5000N.

Further, the number of braiding ingots is 16 or 36 in the copper wire bidirectional cross braiding layer, the number of copper wires per ingot is determined according to the outer diameter of the wire core, and the braiding angle is 30-60 degrees.

Compared with the prior art, the rubber jacketed flexible cable for photoelectric composite communication adopting the technical scheme has the following beneficial effects: the rubber jacketed flexible cable for photoelectric composite communication has strong bending resistance and tensile resistance, can be applied to frequent small-radius bending occasions, has small outer diameter and light weight, is convenient to wire, can realize communication and power supply at the same time, and is particularly suitable for frequent bending mobile occasions.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic structural view of a central tensile fiber unit;

reference numerals: 0. a central tensile optical fiber unit; 01. an optical fiber unit; 02. a buffer tensile layer; 1. a composite wire core; 11. an electrical communication conductor; 12. a skin foam skin physical foaming polyethylene layer; 13. high-elasticity ethylene propylene rubber sheath; 14. copper wire two-way cross braiding layers; 2. a side-gap optical fiber unit; 21. stainless steel tube.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1-2, a rubber jacketed flexible cable for photoelectric composite communication includes: cable core and crowded cladding at the outside inoxidizing coating of cable core, the cable core includes: the three composite wire cores 1 are twisted together by taking the central tensile optical fiber unit 0 as a center, so that every two of the three composite wire cores 1 are tangent, and the three side-gap optical fiber units 2 are respectively twisted on the outer sides of the three composite wire cores 1, so that each side-gap optical fiber unit 2 is tangent to the two composite wire cores 1;

the central tensile optical fiber unit 0 includes: the optical fiber unit 01 and the buffer tensile layer 02, wherein the buffer tensile layer 02 is coated on the optical fiber unit 01, and the buffer tensile layer 02 is made of a plurality of Kevlar fibers longitudinally pulled out of the optical fiber unit 01;

the composite wire core 1 consists of a wire core, a high-elasticity rubber sheath and a copper wire bidirectional cross braiding layer 14, wherein the high-elasticity rubber sheath and the copper wire bidirectional cross braiding layer 14 are sequentially coated outside the wire core, the number of braided ingots 16 or 36 ingots are braided in the copper wire bidirectional cross braiding layer 14, the number of copper wires per ingot is determined according to the outer diameter of the wire core, and the braiding angle is 30-60 degrees; the wire core is formed by twisting two electric communication units and two optical fiber units 01, so that the two electric communication units are tangent, the two optical fiber units 01 are arranged on two sides of two electric communication wires, each optical fiber unit 01 is tangent to the two electric communication wires, and the long-distance high-fidelity electric signal transmission requirement of the electric communication units can be ensured through the copper wire bidirectional cross-woven layer 14.

In this example, further, the ratio of the twisted pitch diameters of the wire cores is 3.5-6.5 times, so that the small-radius bending requirement is met.

Further in this example, the side-gap optical fiber unit 2 is composed of an optical fiber unit 01 and an armored stainless steel tube 21 surrounding the optical fiber unit 01, the stainless steel tube 21 has the functions of extrusion resistance and smash resistance, and the optical fiber unit 01 in the side-gap optical fiber unit 2 is prevented from being directly damaged after the protective layer is damaged.

Further in this example, the optical fiber unit 01 is a plurality of single mode optical fibers or multimode optical fibers.

Further in this example, the electrical communication unit is composed of an electrical communication conductor 11 and a skin-bubble skin physical foaming polyethylene layer 12 extruded outside the electrical communication conductor 11, and the polyethylene thickness is determined by a resistance value corresponding to the terminal impedance of the device.

Further in this example, the protective layer is made of high-strength low-smoke halogen-free flame retardant rubber, the strength is greater than 13MPa, the oxygen index is greater than 35, the flame retardant, oil-resistant and weather-resistant properties are achieved, meanwhile, the physical and mechanical property requirements of high-strength small-radius frequent bending are met, the low-smoke halogen-free flame retardant property meets the current environmental protection and carbon neutralization requirements, and environmental cleaning is guaranteed.

Further in this example, the buffer tensile layer 02 of the central optical fiber has a tensile strength greater than 5000N.

The structure of the conductor in the cable is reasonably designed, and the outer diameter and the weight of the electric communication unit can be greatly reduced by adopting the physically foamed insulating material, so that the light weight requirement is met; the twisting pitch diameter ratio among the wire cores is verified by bending performance, and under the condition that the bending radius is 2.5D, the bending times are more than 5 ten thousand times, so that the overall flexibility of the composite cable is ensured; the buffer tensile layer 02 of the optical fiber unit 01 well protects the optical fiber, and improves the tensile capacity of the optical fiber unit 01 and the whole cable; the optical fiber units 01 and the electric communication units are alternately arranged, and the structure is symmetrically stressed and balanced, so that the stability of the structures of the optical fiber units 01 and the electric communication units is ensured, and the optical fiber units are more suitable for being used in moving occasions with frequent bending; the cable integrates optical transmission and electric energy transmission, and can meet the requirements of equipment power consumption and signal transmission.

The foregoing is a preferred embodiment of the present utility model, and it will be apparent to those skilled in the art that variations and modifications can be made without departing from the principles of the utility model, and these should also be considered as being within the scope of the utility model.

Claims

1. A rubber jacketed flexible cable for photoelectric composite communication, comprising: cable core and crowded package are at the outside inoxidizing coating of cable core, its characterized in that: the cable core includes: the three composite wire cores are twisted together by taking the central tensile optical fiber unit as a center, so that the three composite wire cores are tangent to each other, and the three side gap optical fiber units are respectively twisted on the outer sides of the three composite wire cores, so that each side gap optical fiber unit is tangent to the two composite wire cores; the central tensile optical fiber unit includes: the optical fiber unit and the buffer tensile layer are sequentially coated on the optical fiber unit, and the buffer tensile layer is made of a plurality of Kevlar fibers longitudinally pulled to be coated outside the optical fiber unit; the composite wire core consists of a wire core, a high-elasticity ethylene propylene rubber sheath and a copper wire two-way cross braiding layer, wherein the high-elasticity ethylene propylene rubber sheath and the copper wire two-way cross braiding layer are sequentially coated outside the wire core, the wire core is formed by twisting two electric communication units and two optical fiber units, the two electric communication units are tangent, the two optical fiber units are arranged on two sides of two electric communication wires, and each optical fiber unit is tangent to the two electric communication wires.

2. The rubber jacketed flexible cable for photoelectric composite communication according to claim 1, wherein: the twisting pitch diameter ratio of the wire core is 3.5-6.5 times.

3. The rubber jacketed flexible cable for photoelectric composite communication according to claim 1, wherein: the side gap optical fiber unit consists of an optical fiber unit and an armored stainless steel tube surrounding the optical fiber unit.

4. A rubber jacketed flexible cable for photoelectric composite communication according to claim 3, wherein: the optical fiber units are a plurality of single-mode optical fibers or multi-mode optical fibers.

5. The rubber jacketed flexible cable for photoelectric composite communication according to claim 1, wherein: the electric communication unit consists of an electric communication conductor and a skin-foam skin physical foaming polyethylene layer extruded outside the electric communication conductor.

6. The rubber jacketed flexible cable for photoelectric composite communication according to claim 1, wherein: the number of braided ingots is 16 or 36 in the copper wire bidirectional cross braiding layer, the number of copper wires per ingot is determined according to the outer diameter of the wire core, and the braiding angle is 30-60 degrees.