Novel photoelectric hybrid cable

Abstract

The utility model relates to the technical field of optical cables and electric cables, in particular to a novel photoelectric hybrid cable. Comprising a polyethylene sheath, a composite belt attached to the inner side of the polyethylene sheath and a spiral supporting piece arranged on the inner side of the composite belt, a smooth surface is formed on the inner side of the spiral supporting piece, a spiral protruding rib is formed on the outer side of the spiral supporting piece, and an optical cable unit and a cable unit are installed on the inner side of the spiral supporting piece. The optical cable unit and the electric cable unit are twisted around the reinforcing steel wire and are bundled by the bundling yarn to form a mixed cable body, and the mixed cable body is filled with water-blocking cable paste. The problem that the core part is easy to extrude, bend and damage when the photoelectric hybrid cable is bent or subjected to external force is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical cable and cable, especially to a novel optical and electrical hybrid cable. BACKGROUND

[0002] At present, optical cable and cable are widely used in various fields, in order to solve the transmission of power and signal at the same time, invented hybrid cable, the traditional optical and electrical hybrid cable has many deficiencies in structure design and performance, among which the compatibility between the optical unit and the electrical unit is poor, and they are easy to interfere with each other; the flexibility and mechanical strength of the cable are difficult to balance, when bending or being subjected to external force, the cables are squeezed and bent, which easily reduces the service life of the cable itself, and the electrical unit and the optical communication component are located in the same protective layer inner ring, and are closely attached to each other, the heat dissipation performance of the optical and electrical hybrid cable is poor, and the optical signal transmission stability is easily affected. SUMMARY

[0003] In order to solve the problem that the core is easy to be squeezed and bent and damaged when the optical and electrical hybrid cable is bent or subjected to external force, the utility model provides a novel optical and electrical hybrid cable.

[0004] The utility model provides a novel optical and electrical hybrid cable, including polyethylene sheath, the composite tape of inlay in polyethylene sheath inboard, set up in the composite tape inboard spiral support piece, the inboard of spiral support piece forms smooth surface, forms spiral convex rib outside, the inboard of spiral support piece is equipped with optical cable unit and cable unit, optical cable unit and cable unit are twisted around the reinforcing steel wire and are twisted and are tied into hybrid cable body by tying yarn, the hybrid cable body is filled with water cable paste.

[0005] Further, the spiral convex rib is a plurality of, and the spiral convex rib is distributed equidistantly around the spiral support piece.

[0006] Further, the optical cable unit comprises a PBT tube, an optical fiber arranged in the PBT tube, and the gap between the optical fiber and the PBT tube is filled with optical fiber paste.

[0007] Further, the cable unit comprises a protective sleeve, a shielding layer arranged in the inner side of the protective sleeve, and a carbon fiber wire arranged in the inner side of the shielding layer in a braided manner, the cross section of the braided carbon fiber wire is rectangular, and the protective sleeve is a cross-linked polyethylene pad.

[0008] Further, the outer side of the reinforcing steel wire is twisted around a filling cable, the number of the cable unit is two, and the number of the optical cable unit is three, the cable unit and the optical cable unit are respectively distributed in a circumferential array around the outer periphery of the reinforcing steel wire, and the three optical cable units are distributed in a triangular array and arranged between the two cable units.

[0009] Further, a layer of steel wire mesh is arranged between the composite tape and the spiral support.

[0010] Further, magnesium hydroxide inorganic flame retardant is filled between the spiral protruding ribs and the steel wire mesh.

[0011] Further, an insulation layer is arranged between the steel wire mesh and the composite tape.

[0012] Further, a tear rope is arranged between the spiral support and the composite tape, the tear rope extends along the cable body direction of the hybrid cable, and the tear rope is provided with a plurality of tear ropes and is symmetrically distributed along the reinforcing steel wire.

[0013] Further, the composite tape is an aluminum-plastic composite tape or a steel-plastic composite tape.

[0014] In summary, the utility model has the beneficial technical effects as follows:

[0015] 1. The utility model provides a novel photoelectric hybrid cable, enhances anti-extrusion bending capacity, and the spiral protruding ribs on the outer side of the spiral support not only enhance the structural strength of the spiral support itself, but also can play the role of buffering and dispersing stress when the cable is subjected to bending or external force, thereby protecting the internal optical cable unit and the cable unit from excessive extrusion and bending, and ensuring that the cable can still maintain good performance in complex use environment.

[0016] 2. In the utility model, the reinforcing steel wire is used as the core support structure of the cable, and is twisted around the optical cable unit and the cable unit, thereby further enhancing the overall strength and stability of the cable. The filling cable twisted around the outer side of the reinforcing steel wire can fill the gap, so that the internal structure of the cable is more compact, the relative movement between the cables is reduced, and the anti-extrusion bending capacity is further improved.

[0017] 3. In the utility model, the layout mode of the cable unit and the optical cable unit reduces the mutual interference between the cables. The optical cable unit in triangular array distribution forms a stable structure, enhances the overall rigidity of the cable, and the composite tape further enhances the moisture-proof, shielding and mechanical protection performance of the cable. The steel wire mesh is arranged between the composite tape and the spiral support, and plays a dual role of enhancing electromagnetic shielding and increasing heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic view of a novel photoelectric hybrid cable of the utility model embodiment 1.

[0019] Figure 2 is a structure schematic view of a spiral support of the utility model embodiment 1.

[0020] Figure 3 is a structure schematic view of the inside of the hybrid cable of the utility model embodiment 1.

[0021] Figure 4 is the structure diagram of the cable unit inside the optical cable unit of the embodiment 1 of the utility model.

[0022] Figure 5 is the structure diagram of the cable unit inside the optical cable unit of the embodiment 1 of the utility model.

[0023] Figure 6 is the structure diagram of the cable unit inside the optical cable unit of the embodiment 2 of the utility model.

[0024] 1, polyethylene sheath;101, composite tape;102, steel wire grid;103, magnesium hydroxide inorganic flame retardant;104, insulating layer;2, spiral support;201, spiral rib;3, optical cable unit;301, PBT tube;302, optical fiber;303, optical fiber paste;4, cable unit;401, protective sleeve;402, shielding layer;403, carbon fiber wire;404, soft copper wire;5, filling cable;6, reinforcing steel wire;7, mixed cable body;701, yarn;8, tear rope;9, water-blocking cable paste. DETAILED DESCRIPTION

[0025] The utility model will be further explained in detail in connection with the drawings.

[0026] Embodiment 1

[0027] Referring to Figure 1 and Figure 3 , a novel optical and electrical hybrid cable of the embodiment includes polyethylene sheath 1, composite tape 101 attached to the inner side of polyethylene sheath 1, spiral support 2 arranged on the inner side of composite tape 101, smooth surface formed on the inner side of spiral support 2, spiral rib 201 formed on the outer side of spiral support 2, optical cable unit 3 and cable unit 4 installed on the inner side of spiral support 2, optical cable unit 3 and cable unit 4 twisted around reinforcing steel wire 6 and bundled into mixed cable body 7 by yarn 701, and water-blocking cable paste 9 filled in mixed cable body 7.

[0028] Polyethylene sheath 1 serves as the outermost protective structure of the cable, which can effectively resist mechanical damage from the outside. In addition, polyethylene sheath 1 has good chemical corrosion resistance, and can also play a certain role in preventing moisture from entering the inside of the cable.

[0029] Composite tape 101 can be aluminum-plastic composite tape or steel-plastic composite tape. Taking aluminum-plastic composite tape as an example, it is composed of one layer of aluminum foil and two layers of plastic film by hot pressing process. The metal layer of composite tape 101 has good electromagnetic shielding performance, which can effectively block the interference of external electromagnetic field on the signal transmission inside the cable, ensuring the stable transmission of electrical and optical signals.

[0030] The helical support 2 is made of polyvinyl chloride or polyurethane, and the inner side is smooth, and the outer side is provided with helical ribs 201 which are distributed equidistantly around the helical support 2. The helical support 2 provides a stable support structure for the optical cable unit 3 and the cable unit 4 inside. The helical ribs 201 on the outer side not only enhance the structural strength of the support itself, but also play a buffering and stress dispersion role when the cable is bent or subjected to external force. In addition, the helical ribs 201 help to dissipate the heat inside the cable.

[0031] The water-blocking cable paste 9 is filled in the hybrid cable body 7, and when water enters the cable, a gel-like substance is formed to prevent further penetration of water, thereby protecting the optical cable unit 3 and the cable unit 4 from the influence of a humid environment and ensuring the stability of the electrical and optical transmission performance of the cable.

[0032] With reference to Figure 2 , the helical ribs 201 are a plurality of helical ribs 201 which are distributed equidistantly around the helical support 2.

[0033] With reference to Figure 4 , the optical cable unit 3 comprises a PBT tube 301, an optical fiber 302 arranged in the PBT tube 301, and an optical fiber paste 303 filled in the gap between the optical fiber 302 and the PBT tube 301. The PBT tube 301 has a certain flexibility and can adapt to the deformation of the cable during bending and laying. The optical fiber paste 303 can reduce the friction between the optical fiber 302 and the inner wall of the PBT tube, and absorb part of the energy when the cable is subjected to external force impact, thereby protecting the optical fiber 302 from damage.

[0034] With reference to Figure 5 , the cable unit 4 comprises a protective sleeve 401, and a carbon fiber wire 403 arranged in a woven manner inside the shielding layer 402. The cross section of the woven carbon fiber wire 403 is rectangular, and the protective sleeve 401 is a cross-linked polyethylene pad.

[0035] The shielding layer 402 can protect the shielding layer 402 and the carbon fiber wire 403 inside from the influence of the external environment. A copper strip or an aluminum strip can be used, and an insulating material is arranged between the shielding layer 402 and the carbon fiber wire 403. The shielding layer 402 provides good insulation performance and ensures the electrical safety of the cable.

[0036] The carbon fiber wire 403 is a conductor for transmitting power in the cable unit 4, has good electrical conductivity and flexibility, and is light in weight. The elastic strength of the carbon fiber wire 403 is several times that of steel wire, and the electrical conductivity of the carbon fiber wire 403 is close to that of copper wire, and has the functions of electrical conductivity and tensile strength.

[0037] With reference to Figure 3The outer side of the reinforcing steel wire 6 is twisted with a filling cable 5, the number of the cable unit 4 is two, the number of the optical cable unit 3 is three, the cable unit 4 and the optical cable unit 3 are respectively distributed in a circumferential array on the outer periphery of the reinforcing steel wire 6, and the three optical cable units 3 are distributed in a triangular array and respectively arranged between the two cable units 4.

[0038] The reinforcing steel wire 6 is located at the center of the cable and provides tensile and bending resistance for the cable. The filling cable 5 fills the gap between the reinforcing steel wire 6 and the cable unit, making the internal structure of the cable more compact, reducing the relative movement between the cables, and improving the overall stability and vibration resistance of the cable. The twisted structure further improves the mechanical strength of the cable unit 4 and the optical cable unit 3, enabling them to adapt to the bending of the cable in different environments, and cooperating with the spiral support 2 to reduce the stress damage caused by twisting.

[0039] Referring to Figure 3 , a layer of steel wire mesh 102 is further provided between the composite tape 101 and the spiral support 2.

[0040] The steel wire mesh 102 plays a dual role of enhancing electromagnetic shielding and increasing heat dissipation. Its mesh structure can also disperse external forces and improve the compression resistance of the cable.

[0041] Referring to Figure 3 , the spiral-shaped convex ribs 201 are filled with magnesium hydroxide inorganic flame retardant 103 between the steel wire mesh 102.

[0042] Referring to Figure 3 , an insulating layer 104 is further provided between the steel wire mesh 102 and the composite tape 101.

[0043] The insulating layer 104 can be made of polyethylene or rubber, which is used to isolate the steel wire mesh 102 and the composite tape 101 to prevent current conduction and electromagnetic interference between them.

[0044] A tear rope 8 is provided between the spiral support 2 and the composite tape 101, the tear rope 8 extends along the cable body direction of the hybrid cable, and the tear rope 8 is provided with a plurality of and symmetrically distributed along the reinforcing steel wire 6.

[0045] Embodiment 2

[0046] Referring to Figure 6 , the cable unit 4 includes a protective sleeve 401, a shielding layer 402 provided inside the protective sleeve 401, and a bundle of soft copper wires 404 provided inside the shielding layer 402. The protective sleeve 401 is a cross-linked polyethylene pad, an insulating material is provided between the shielding layer 402 and the carbon fiber wire, and the soft copper wire 404 can also replace the carbon fiber wire.

[0047] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A novel opto-electric hybrid cable characterized in that, The utility model provides a kind of mixed cable, including polyethylene sheath (1), composite tape (101) is attached to the inside of polyethylene sheath (1), spiral support (2) is arranged in the inside of composite tape (101), the inside of the spiral support (2) is formed smooth surface, outside is formed spiral rib (201), the inside of the spiral support (2) is installed optical cable unit (3) and cable unit (4), the optical cable unit (3) and cable unit (4) are stranded around reinforcing steel wire (6), and are tied into mixed cable body (7) by tying yarn (701), the mixed cable body (7) is filled with water-blocking cable paste (9).

2. The novel opto-electric hybrid cable according to claim 1, characterized in that, The spiral rib (201) is multiple, and the spiral rib (201) is equidistantly distributed around the spiral support (2).

3. The novel opto-electric hybrid cable according to claim 1, wherein, The optical cable unit (3) includes a PBT tube (301), an optical fiber (302) arranged in the PBT tube (301), and the void of the PBT tube (301) is filled with an optical fiber paste (303).

4. The novel opto-electric hybrid cable according to claim 1, wherein, The cable unit (4) includes a protective sleeve (401), a shielding layer (402) arranged on the inside of the protective sleeve (401), and carbon fiber filaments (403) arranged in a woven manner on the inside of the shielding layer (402). The cross section of the woven carbon fiber filaments (403) is rectangular, and the protective sleeve (401) is a cross-linked polyethylene pad.

5. The novel opto-electric hybrid cable according to claim 1, wherein, The reinforcing steel wire (6) is stranded around a filler cable (5) on the outside. The number of the cable unit (4) is two, and the number of the optical cable unit (3) is three. The cable unit (4) and the optical cable unit (3) are respectively arranged in a circumferential array on the outer periphery of the reinforcing steel wire (6). The three optical cable units (3) are arranged in a triangular array and are respectively arranged between the two cable units (4).

6. The novel opto-electric hybrid cable according to claim 1, wherein, A steel wire grid (102) is further arranged between the composite tape (101) and the spiral support (2).

7. The novel opto-electric hybrid cable according to claim 6, characterized in that, Magnesium hydroxide inorganic flame retardant (103) is filled between the spiral rib (201) and the steel wire grid (102).

8. The novel opto-electric hybrid cable according to claim 7, characterized in that, An insulation layer (104) is further arranged between the steel wire grid (102) and the composite tape (101).

9. The novel opto-electric hybrid cable according to claim 1, wherein, A tear rope (8) is arranged between the spiral support (2) and the composite tape (101). The tear rope (8) extends along the cable body direction of the mixed cable. The tear rope (8) is arranged in multiple and is symmetrically distributed along the reinforcing steel wire (6).

10. The novel opto-electric hybrid cable according to claim 1, characterized in that, The composite tape (101) is an aluminum-plastic composite tape or a steel-plastic composite tape.

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