Photoelectric composite cable

Abstract

The utility model discloses a photoelectric composite cable which comprises an inner core and is characterized in that the inner core is composed of two optical units, two electric units and four ground wires, the two optical units and the two electric units are distributed in a cross shape in the inner core, and the four ground wires abut against the positions between the optical units and the electric units in an X shape; a reinforcing piece, a wrapping tape, a shielding layer and a sheath are sequentially distributed outside the inner core from inside to outside; according to the utility model, the stainless steel soft steel in the optical unit is used for the first protection, the aramid fiber layer is used for the second protection, and the reinforcing member is used for the third protection, so that the compression resistance and the clamping resistance of the optical fiber are fully enhanced through the three protection layers; and meanwhile, the aramid fiber layer and the reinforcer are woven by adopting a plurality of strands of aramid fibers, so that the protection effect of a traditional metal armor can be achieved, and the weight of the cable is reduced on the basis of ensuring the tensile and compressive properties of the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a photoelectric composite cable. Background Art

[0002] With the continuous development of the communications industry, optical cables have begun to be laid and used on a large scale, especially in the construction of FTTH, where optical cables, electrical cables and data cables are introduced to the user end separately, resulting in insufficient pipeline resources and high laying costs. The use of optoelectronic composite optical cables can allow electricity and light to enter the home directly, and operators do not need to apply for power load separately, and their applications are becoming more and more widespread;

[0003] However, the main problem with the existing optoelectronic composite cables is that, since the composite cables need to have optical cables and electrical cables inside, they have high requirements for tensile and compressive properties to adapt to ground laying or high-altitude installation. When more layers of metal armor are used, it will cause problems of reduced flexibility and increased weight. Secondly, the cable core is not round and the space utilization rate is insufficient, which increases the cost. The optoelectronic composite cable has the problem of electromagnetic interference. Therefore, the utility model proposes an optoelectronic composite cable to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to propose an optoelectronic composite cable, which solves the main problems of the existing optoelectronic composite cables. Since the composite cable needs to have optical cables and electrical cables inside, it has high requirements on tensile and compressive properties to adapt to ground laying or high-altitude installation. When more layers of metal armor are used, it will cause the problems of decreased flexibility and increased weight. Secondly, there is also the problem of electromagnetic interference of the optoelectronic composite cable.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: an optoelectronic composite cable, comprising an inner core, wherein the inner core is composed of two optical units, two electrical units and four ground wires, the two optical units and the two electrical units are distributed in a cross shape inside the inner core, and the four ground wires are in an X-shaped conflict between the optical units and the electrical units;

[0006] The outer part of the inner core is provided with a reinforcement member, a wrapping tape, a shielding layer and a sheath in sequence from the inside to the outside;

[0007] The optical unit comprises an optical fiber, a nylon tight cladding layer, a stainless steel hose and an aramid fiber layer. The nylon tight cladding layer, the stainless steel hose and the aramid fiber layer are arranged in sequence from the inside to the outside of the optical fiber.

[0008] A further improvement is that the reinforcement and the aramid fiber layer are both woven by a plurality of strands of aramid fibers.

[0009] A further improvement is that the material of the wrapping layer itself is polyester.

[0010] A further improvement is that: the shielding layer is woven from a plurality of tinned copper wires in a mesh shape, and the weaving density of the shielding layer is ≥85%.

[0011] A further improvement is that the material of the sheath itself is PVC, and the nominal thickness of the outer sheath is 1 mm.

[0012] A further improvement is that the material of the nylon tight sheath itself is LSZH.

[0013] The beneficial effects of the utility model are as follows: the utility model adopts multiple protections for fragile optical fibers, and uses the stainless steel in the optical unit for the first protection, the aramid fiber layer for the second protection, and the reinforcement member for the third protection. The compressive Kara performance of the optical fiber is fully enhanced by the three-layer protection. At the same time, the aramid fiber layer and the reinforcement member are woven with multiple strands of aramid fiber filaments, which not only have the protective effect of traditional metal armor, but also reduce the weight of the cable on the basis of ensuring the tensile and compressive performance of the cable itself, which is convenient for the later staff to lay the wiring. At the same time, the stainless steel hose, aramid fiber layer and reinforcement layer do not affect the bending of the cable. Secondly, in the face of the uneven cable core and insufficient space utilization, which increases the cost, the optoelectronic composite optical cable has the problem of electromagnetic interference. The inner core of the cable is arranged and distributed through the optical unit, the electrical unit and the ground wire, which compacts the space of the inner core part of the cable, so that the space utilization is improved and the roundness is better. The problem of electromagnetic interference will be prevented by using a shielding layer woven with tinned copper wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model.

[0015] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of part A in FIG.

[0016] Figure 3 It is a schematic diagram of the structure of the combined parts of the light unit in the utility model.

[0017] Among them: 1. optical unit; 2. electrical unit; 3. ground wire; 4. reinforcement; 5. tape; 6. shielding layer; 7. sheath; 8. optical fiber; 9. nylon tight wrap; 10. stainless steel hose; 11. aramid fiber layer. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0019] according to Figure 1 - Figure 3 As shown, this embodiment provides an optoelectronic composite cable, including an inner core, the inner core is composed of two optical units 1, two electrical units 2 and four ground wires 3, the two optical units 1 and the two electrical units 2 are distributed in a cross shape inside the inner core, and the four ground wires 3 are in an X shape and are interposed between the optical units 1 and the electrical units 2;

[0020] The outer part of the inner core is provided with a reinforcement member 4, a wrapping tape 5, a shielding layer 6 and a sheath 7 in order from the inside to the outside;

[0021] The optical unit 1 includes an optical fiber 8, a nylon tight sheath 9, a stainless steel hose 10 and an aramid fiber layer 11. The nylon tight sheath 9, the stainless steel hose 10 and the aramid fiber layer 11 are arranged on the outside of the optical fiber 8 in sequence from the inside to the outside. However, the main problem with the existing optoelectronic composite cable is that since the composite cable needs to have optical cables and electrical cables inside, it has high requirements for tensile and compressive properties to adapt to ground laying or high-altitude installation. When a large number of layers of metal armor are used, the flexibility decreases and the weight increases. The device adopts multiple protections for the fragile optical fiber 8, using the stainless steel in the optical unit 1 for the first protection, the aramid fiber layer 11 for the second protection, and the reinforcement 4 for the third protection. The three-layer protection improves the compressive and karabiner properties of the optical fiber 8. It is fully strengthened, and the aramid fiber layer 11 and the reinforcement 4 are both woven with multiple strands of aramid fiber filaments, which not only have the protective effect of traditional metal armor, but also reduce the weight of the cable on the basis of ensuring the tensile and compressive properties of the cable itself, which is convenient for the later staff to lay and wire. At the same time, the stainless steel hose 10, the aramid fiber layer 11 and the reinforcement layer do not affect the bending of the cable. Secondly, in the face of the uneven cable core and insufficient space utilization, which increases the cost, the optoelectronic composite optical cable has the problem of electromagnetic interference. The inner core of the cable is arranged and distributed through the optical unit 1, the electrical unit 2 and the ground wire 3, which compacts the space of the inner core part of the cable, so that the space utilization rate is improved and the roundness rate is better. The problem of electromagnetic interference will be prevented by using a shielding layer 6 woven with tinned copper wire.

[0022] The reinforcing member 4 and the aramid fiber layer 11 are both woven with multiple strands of aramid fibers. The armor layer woven with multiple strands of aramid fibers by the reinforcing member 4 and the aramid fiber layer 11 reduces the weight of the cable while ensuring the compression and tensile properties of the cable.

[0023] The material of the 5-layer bag is polyester.

[0024] The shielding layer 6 is woven in a mesh shape by multiple tinned copper wires, and the weaving density of the shielding layer 6 is ≥85%. By setting the shielding layer 6 to adopt a tinned alloy material, the cable can be protected from external electronic interference, avoiding electromagnetic interference caused by external electronic equipment to the transmission of the optical fiber 8.

[0025] The material of the outer sheath 7 is PVC, and the nominal thickness of the outer sheath 7 is 1 mm.

[0026] The material of the nylon tight sheath 9 is LSZH. By setting the material of the nylon tight sheath 9 to LSZH, which is a halogen-free material, the safety factor is higher, that is, the smoke exhaust volume is low when heated.

[0027] The color of the sheath 7 is white. By setting the color of the sheath 7 to white, when laid outdoors exposed, the heat absorption of white is reduced compared to traditional black, and when the sheath 7 is worn, it can be quickly judged by the color difference between the white sheath 7 and the internal components.

[0028] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An optoelectronic composite cable, comprising an inner core, characterized in that: The inner core is composed of two optical units (1), two electrical units (2) and four ground wires (3); the two optical units (1) and the two electrical units (2) are distributed in a cross shape inside the inner core, and the four ground wires (3) are interposed between the optical units (1) and the electrical units (2) in an X shape; The outer part of the inner core is provided with a reinforcement member (4), a wrapping tape (5), a shielding layer (6) and a sheath (7) in sequence from the inside to the outside; The optical unit (1) comprises an optical fiber (8), a nylon tight cladding layer (9), a stainless steel hose (10) and an aramid fiber layer (11), wherein the nylon tight cladding layer (9), the stainless steel hose (10) and the aramid fiber layer (11) are arranged in sequence from the inside to the outside of the optical fiber (8).

2. The photoelectric composite cable according to claim 1, characterized in that: The reinforcement member (4) and the aramid fiber layer (11) are both woven by weaving a plurality of strands of aramid fibers.

3. The photoelectric composite cable according to claim 1, characterized in that: The material of the wrapping tape (5) layer is polyester.

4. The photoelectric composite cable according to claim 1, characterized in that: The shielding layer (6) is formed by weaving a plurality of tinned copper wires in a mesh shape, and the weaving density of the shielding layer (6) is ≥85%.

5. The optoelectronic composite cable according to claim 1, characterized in that: The material of the sheath (7) itself is PVC, and the nominal thickness of the outer sheath (7) is 1 mm.

6. The photoelectric composite cable according to claim 1, characterized in that: The material of the nylon tight sheath (9) itself is LSZH.

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