CN112151217A - Flexible hinge photoelectric composite cable - Google Patents
Flexible hinge photoelectric composite cable Download PDFInfo
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- CN112151217A CN112151217A CN202011145478.5A CN202011145478A CN112151217A CN 112151217 A CN112151217 A CN 112151217A CN 202011145478 A CN202011145478 A CN 202011145478A CN 112151217 A CN112151217 A CN 112151217A
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
- H01B7/1815—Protections not provided for in groups H01B7/182 - H01B7/26 composed of longitudinal inserts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/184—Sheaths comprising grooves, ribs or other projections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
Abstract
The invention belongs to the technical field of communication optical cables, and relates to a flexible hinge photoelectric composite cable. The optical fiber communication unit and the electric transmission unit are arranged in parallel, the optical fiber communication unit is arranged on the left side, the electric transmission unit is arranged on the right side, a longitudinal central reinforcing piece with a rectangular cross section is arranged in the center between the optical fiber communication unit and the electric transmission unit, the left long side of the rectangular cross section of the central reinforcing piece is adjacent to the optical fiber communication unit, the right long side of the rectangular cross section of the central reinforcing piece is adjacent to the electric transmission unit, and the filler, the optical fiber communication unit, the electric transmission unit and the central reinforcing piece are twisted to form a cable core with an oval cross section; the cable core is coated with an inner sheath layer, a hinge layer, an outer sheath layer and a supporting arm from inside to outside in sequence to form the flexible hinge photoelectric composite cable. The invention solves the influence of outdoor severe environment on the transmission performance of the photoelectric composite cable, improves the flexibility, the anti-interference performance, the water resistance, the compression resistance and the tensile resistance, has stable transmission signals, is easy to lay and construct, and is suitable for data transmission in the fields of military, finance and the like.
Description
Technical Field
The invention belongs to the technical field of communication optical cables, and particularly relates to a flexible hinge photoelectric composite cable.
Background
The photoelectric composite cable is suitable for being used as a transmission line in a communication access network system, is a novel access mode, integrates optical fibers and transmission copper wires, can solve the problems of broadband access, equipment power consumption and signal transmission, and is commonly used for supplying power for a communication remote power supply system and a short-distance communication system.
However, the photoelectric composite cable is often used in outdoor severe environment, and it is inevitable to tread, extrude, stretch, impact, drag and the like on the composite cable during construction, and such external influences damage the core wire and the core wire structure inside the composite cable, thereby affecting the signal transmission capability, which requires the composite cable to have better compression strength and tensile strength and better flexibility. The conventional photoelectric composite cable cannot meet the requirements at present, and a novel photoelectric composite cable is needed.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a flexible hinge photoelectric composite cable. Through the design of the unique hinge structure, the photoelectric composite cable has better tensile and compressive resistance and better flexibility, and meets the requirements of information communication.
The technical scheme of the invention is as follows:
a soft hinge photoelectric composite cable comprises an optical fiber communication unit 2 and an electric transmission unit 3 which are arranged in parallel, wherein the optical fiber communication unit 2 is arranged on the left side, the electric transmission unit 3 is arranged on the right side, a longitudinal central reinforcing part 1 with a rectangular cross section is arranged in the center between the optical fiber communication unit 2 and the electric transmission unit 3, the left long side of the rectangular cross section of the central reinforcing part 1 is adjacent to the optical fiber communication unit 2, the right long side of the rectangular cross section of the central reinforcing part 1 is adjacent to the electric transmission unit 3, and a filler 4 is twisted with the optical fiber communication unit 2, the electric transmission unit 3 and the central reinforcing part 1 to form a cable core with an oval cross section; the cable core is coated with an inner sheath layer 5, a hinge layer 6, an outer sheath layer 7 and a supporting hand 8 from inside to outside in sequence to form a flexible hinge photoelectric composite cable;
the central reinforcement 1 is formed by stranding a glass fiber reinforced composite (GFRP) or an aramid fiber reinforced composite (KFRP) and water-blocking spun yarns;
the optical Fiber communication unit 2, 2-12 optical fibers 21 are arranged in a loose tube 23, a water-absorbent resin 22 is further arranged in the loose tube 23, a plurality of carbon Fiber filling ropes 24 are coated on the loose tube 23 in an S-shaped spiral hinge process structure, a non-metal composite tape 25 is coated on the loose tube 23 and the carbon Fiber filling ropes 24 to form the optical Fiber communication unit with a circular cross section, the optical fibers 21 are single-mode tight-sleeve low-loss G.657 optical fibers and have excellent bending resistance, the bending radius of the optical fibers can reach 5.1mm at the minimum, the transmission loss is low, the water-absorbent resin 22 is formed by mixing water-blocking acrylate resin and carrier resin, the loose tube 23 is made of engineering thermoplastic material polybutylene terephthalate, the carbon Fiber filling ropes 24 are made of carbon fibers, the non-metal composite tape 25 is made of Fiber Reinforced composite material (Fiber Reinforced Polymer/Plastic, FRP) which is a high-performance material formed by mixing fiber materials and base materials (resin) in proportion, is light and hard, is non-conductive, has high mechanical strength and corrosion resistance, and has good mechanical performance and water resistance;
the electric transmission unit 3 comprises 2 copper wires 31 with insulating outer skins, an insulating layer 32, carbon fiber filling ropes 33 and a shielding layer 34, wherein the 2 copper wires 31 are mutually twisted, the insulating layer 32 coats the 2 copper wires 31, a plurality of carbon fiber filling ropes 33 are coated on the insulating layer 32 in an S-shaped spiral hinge process structure, the shielding layer 34 is coated on the insulating layer 32 and the carbon fiber filling ropes 33 to form the electric transmission unit with a circular cross section, the insulating layer 32 is made of low-smoke halogen-free flame-retardant polyethylene plastic, the shielding layer 34 is made of copper-clad aluminum wires with diameters of 0.15 mm-0.30 mm, and the surface of the shielding layer is concentrically coated with a layer of pure copper, so that the tensile strength and the elongation are enhanced;
the filler 4 consists of a water-blocking rope and water-blocking spun yarns, the water-blocking rope is aramid fiber yarns wrapped by a water-blocking tape, the water-blocking tape is a semi-conductive buffer water-blocking tape, and the water-blocking rope and the water-blocking spun yarns are twisted with the optical fiber communication unit 2, the electric transmission unit 3 and the central reinforcement 1 and filled in the inner sheath layer 5;
the inner sheath layer 5 is extruded on the cable core and is made of polyurethane material or epoxy resin material;
the hinge layer 6 is coated on the outer surface of the inner sheath layer 5 by adopting a double S hinge interlocking structure process, the used material is a low-density PTFE raw material belt which has the characteristics of good flexibility, low friction coefficient and the like, the low-density PTFE belt is overlapped by 90 percent through the double S hinge interlocking structure process, has good flexibility, and forms better tensile and compressive effects while not influencing the bending of the photoelectric composite cable;
the flat outer sheath layer 7 takes the central reinforcement 1 as a center to coat the central reinforcement 1, the optical fiber communication unit 2, the electric transmission unit 3, the filler 4, the inner sheath layer 5 and the hinge layer 6 together, the outer surface of the outer sheath layer 7 consists of an upper plane, a lower plane, a left side surface and a right side surface, the upper plane and the lower plane of the outer sheath layer 7 are parallel and symmetrical to each other, the left side surface and the right side surface of the outer sheath layer 7 are semi-cylindrical surfaces which are symmetrical to each other, a bus of a cylinder of the left side surface is parallel to a bus of a cylinder of the right side surface, 2 longitudinal supporting hands 8 are respectively arranged on the upper plane and the lower plane of the outer sheath layer 7, 2 supporting hands 8 on the upper plane are symmetrically arranged and parallel to each other, 2 supporting hands 8 on the lower plane are symmetrically arranged and parallel to each other, 2 supporting hands 8 on the upper plane are also symmetrical to 2 supporting hands 8 on the lower plane, the centers of the upper and lower supporting hands 8 on the left side surface and the center of the optical fiber communication unit 2 are mutually parallel and symmetrical, the centers of the upper and lower supporting hands 8 on the right side surface and the center of the electric transmission unit 3 are mutually parallel and symmetrical, and the cross section of each supporting hand 8 is in an elliptic arc shape; support hand 8 and oversheath layer 7 and for the integrative structure of extrusion formation in same mould, the material of supporting hand 8 and oversheath layer 7 is the compound oversheath that polyurethane elastomer sheath + talcum powder + powder of hindering water + irradiation crosslinked polyvinyl chloride sheath constitutes, inside polyurethane elastomer can play absorbed pressure, the effect of protection inner structure, middle talcum powder and the powder mixture of hindering water also possess the effect of blocking water, outer irradiation crosslinked polyvinyl chloride has stronger weatherability and mechanical properties, adaptable more abominable outdoor natural environment, the flexible type hinge photoelectric composite cable that has the supporting hand structure, frictional force has been reduced when the installation is laid, good mechanical properties has, easily installation is laid.
The invention has the beneficial effects that: the hinge layer adopts a double S-hinge interlocking structure process, the overlapping rate reaches 90%, the flexibility is good, and the tensile and compression resistant effects are good while the bending of the photoelectric composite cable is not influenced; the outer sheath layer is provided with a plurality of structures for supporting hands, so that the friction force generated when the flat photoelectric composite cable is installed and laid is reduced, and the optical fiber communication unit and the electric transmission unit are subjected to pressure reduction protection; the center of the outer sheath layer is provided with the center reinforcing piece, so that the extrusion force of the sheath material to the optical fiber communication unit and the electric transmission unit is reduced, and the communication quality is improved; the central reinforcement is formed by twisting a glass fiber reinforced composite material (GFRP) or an aramid fiber reinforced composite material (KFRP) and water-blocking spun yarns, the inner sheath layer is made of a polyurethane material or an epoxy resin material, the hinge layer is made of a low-density PTFE raw material belt, the outer sheath layer is made of a polyurethane elastomer sheath, talcum powder, water-blocking powder and an irradiation cross-linked polyvinyl chloride sheath, the selected material has good flexibility, and the tensile resistance, the compressive resistance and the bending resistance of the photoelectric composite cable are improved.
The invention is suitable for the pipeline communication laying system in outdoor severe environment, and can efficiently serve for the transmission of signals.
Drawings
FIG. 1 is a schematic cross-sectional view of a flexible hinge optical-electrical composite cable;
FIG. 2 is a schematic cross-sectional view of a fiber optic communications unit;
fig. 3 is a schematic cross-sectional view of an electrical transmission unit.
In the figure, 1-a central reinforcement, 2-an optical fiber communication unit, 3-an electric transmission unit, 4-a filler, 5-an inner sheath layer, 6-a hinge layer, 7-an outer sheath layer, 8-a support hand, 21-an optical fiber, 22-a water-absorbent resin, 23-a loose tube, 24-a carbon fiber filling rope, 25-a non-metal composite tape, 31-a copper wire, 32-an insulating layer, 33-a carbon fiber filling rope, and 34-a shielding layer.
Detailed Description
The invention is further illustrated below with reference to examples and figures.
The present embodiment is a flexible hinge photoelectric composite cable and a method for producing the same, and fig. 1 is a schematic cross-sectional view of a flexible hinge photoelectric composite cable. A soft hinge photoelectric composite cable comprises an optical fiber communication unit 2 and an electric transmission unit 3 which are arranged in parallel, wherein the optical fiber unit 2 is arranged on the left side, the electric transmission unit 3 is arranged on the right side, a longitudinal rectangular cross section central reinforcing part 1 is arranged in the center between the optical fiber communication unit 2 and the electric transmission unit 3, the left long side of the rectangular cross section of the central reinforcing part 1 is adjacent to the optical fiber communication unit 2, the right long side of the rectangular cross section of the central reinforcing part 1 is adjacent to the electric transmission unit 3, and a filler 4 is twisted with the optical fiber communication unit 2, the electric transmission unit 3 and the central reinforcing part 1 to form a cable core with an oval cross section; the cable core is coated with an inner sheath layer 5, a hinge layer 6, an outer sheath layer 7 and a supporting hand 8 from inside to outside in sequence to form the flexible hinge photoelectric composite cable.
The central reinforcement 1 is formed by twisting a glass fiber reinforced composite material (GFRP) or an aramid fiber reinforced composite material (KFRP) with the water-blocking spun yarn, and plays a role in protection and support, so that the flexibility of the composite optical cable is improved, and the laying is facilitated.
As shown in fig. 2, a schematic cross-sectional structure of an optical fiber communication unit is shown, 2-12 optical fibers 21 are placed in a loose tube 23, a water-absorbent resin 22 is further arranged in the loose tube 23, a plurality of carbon fiber filling ropes 24 are wrapped on the loose tube 23 in an S-shaped spiral hinge process structure, a non-metal composite tape 25 is wrapped on the loose tube 23 and the carbon fiber filling ropes 24 to form the optical fiber communication unit with a circular cross section, the optical fibers 21 are single-mode tight-sleeved low-loss g.657 optical fibers, and have excellent bending resistance, the bending radius of the optical fibers can be as small as 5.1mm, and the transmission loss is low. The water-absorbent resin 22 is formed by mixing water-blocking acrylate resin and carrier resin, has a good water-absorbing effect, can prevent water from flowing inwards along the sleeve, protects the optical fiber from being corroded by water, and prolongs the service life of the optical fiber. The material of the loose tube 23 is engineering thermoplastic material polybutylene terephthalate. The carbon fiber filling rope 24 is a bundle rope made of carbon fibers, so that the protection performance of the optical fiber communication unit is enhanced, and the compression resistance of the composite cable is improved. The non-metallic composite tape 25 is a Fiber Reinforced Polymer/Plastic (FRP), which is a high-performance type material formed by mixing a Fiber material and a base material (resin) in proportion, and has the advantages of light weight, hardness, non-conductivity, high mechanical strength, corrosion resistance, good mechanical properties and water resistance.
The schematic cross-sectional structure of the electrical transmission unit shown in fig. 3 includes 2 copper wires 31 with insulating sheaths, an insulating layer 32, carbon fiber filler ropes 33 and a shielding layer 34, wherein the 2 copper wires 31 are twisted with each other, the insulating layer 32 covers the 2 copper wires 31, the carbon fiber filler ropes 33 are covered on the insulating layer 32 by an S-shaped spiral hinge process structure, the shielding layer 34 is covered on the insulating layer 32 and the carbon fiber filler ropes 33 to form the electrical transmission unit with a circular cross section, the insulating layer 32 is made of low-smoke halogen-free flame-retardant polyethylene plastic, the shielding layer 34 is made of copper-clad aluminum wires with a diameter of 0.15 mm-0.30 mm, and the surface of the shielding layer is concentrically covered with a layer of pure copper, so that the tensile strength and the elongation rate are enhanced.
The filler 4 is composed of a water-blocking rope and water-blocking spun yarns, the water-blocking rope is aramid fibers wrapped by a water-blocking tape, the water-blocking tape is a semi-conductive buffer water-blocking tape, and the water-blocking rope and the water-blocking spun yarns are twisted with the optical fiber communication unit 2, the electric transmission unit 3 and the central reinforcement 1 and filled in the inner sheath layer 5.
The inner sheath layer 5 is extruded on the cable core and is made of polyurethane material or epoxy resin material, so that the cable core has strong cohesion and good tensile, compressive and wear resistance;
the hinge layer 6 is coated on the outer surface of the inner sheath layer 5 by adopting a double S hinge interlocking structure process, the used material is a low-density PTFE raw material belt which has the characteristics of good flexibility, low friction coefficient and the like, the low-density PTFE belt has an overlapping rate of 90 percent through the double S hinge interlocking structure process, has good flexibility, and forms better tensile and compressive effects while not influencing the bending of the photoelectric composite cable.
The flat outer sheath layer 7 covers the central reinforcing member 1, the optical fiber communication unit 2, the electric transmission unit 3, the filler 4, the inner sheath layer 5 and the hinge layer 6 together with the central reinforcing member 1 as a center, the outer surface of the outer sheath layer 7 is composed of an upper plane, a lower plane, a left side surface and a right side surface, the upper plane and the lower plane of the outer sheath layer 7 are parallel to each other and symmetrical to each other, the left side surface and the right side surface of the outer sheath layer 7 are semi-cylindrical surfaces symmetrical to each other, a bus of a cylinder of the left side surface and a bus of a cylinder of the right side surface are parallel to each other, 2 longitudinal supporting hands 8 are respectively arranged on the upper plane and the lower plane of the outer sheath layer 7, 2 supporting hands 8 on the upper plane are symmetrically arranged and parallel to each other, 2 supporting hands 8 on the lower plane are symmetrically arranged and parallel to each other, 2 supporting hands 8 on the upper plane and 2 supporting hands 8 on the lower plane are also symmetrical to each other, the centers of the upper and lower supporting hands 8 on the left side surface and the center of the optical fiber communication unit 2 are mutually parallel and symmetrical, the centers of the upper and lower supporting hands 8 on the right side surface and the center of the electric transmission unit 3 are mutually parallel and symmetrical, and the cross section of each supporting hand 8 is in an elliptic arc shape; support hand 8 and oversheath layer 7 and be the integrative structure that extrudes in same mould and form, the material of supporting hand 8 and oversheath layer 7 is the compound oversheath that polyurethane elastomer sheath + talcum powder + powder of hindering water + irradiation cross-linked polyvinyl chloride sheath constitutes, inside polyurethane elastomer can play absorbing pressure, protect the inner structure effect, middle talcum powder and the powder mixture of hindering water also possess the effect of blocking water, outer irradiation cross-linked polyvinyl chloride has stronger weatherability and mechanical properties, adaptable more abominable outdoor natural environment, the flexible type hinge photoelectric composite cable that has the supporting hand structure, frictional force has been reduced when the installation is laid, good mechanical properties has, easily installation is laid.
The structure size of each part of the flexible hinge photoelectric composite cable of the embodiment is as follows:
the outer diameter of the loose tube 3 is 2.15-2.25 mm, and the wall thickness is 0.33-0.35 mm;
the width of the central reinforcement 1 is 0.6 plus or minus 0.05mm, and the height is 4 plus or minus 0.05 mm; (ii) a
The outer diameter of the carbon fiber filling rope is 0.5-0.6 mm;
the outer diameter of the optical fiber communication unit 2 is 3.5-3.8 mm;
the outer diameter of the electric transmission unit 3 is 3.5-3.8 mm;
the distance between the central reinforcing piece 1 and the optical fiber communication unit 2 and the distance between the central reinforcing piece and the electric transmission unit 3 are 0.5-0.6 mm;
the distance between the central reinforcement 1 and the upper plane and the lower plane of the inner sheath layer 5 is 0.5-0.6 mm;
the distance between the optical fiber communication unit 2 and the left plane of the inner sheath layer 5 is 0.5-0.6 mm;
the distance between the electric transmission unit 3 and the right plane of the inner sheath layer 5 is 0.5-0.6 mm;
the width of the cross section of the outer sheath 7 is 22-23 mm, and the height is 16.5-17 mm;
the distance between the 2 supporting hands 8 on the upper plane of the outer sheath 7 and the distance between the 2 supporting hands 8 on the lower plane are both 5-5.5 mm.
The invention is suitable for the pipeline communication laying system in outdoor severe environment, and can efficiently serve for the transmission of signals.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A flexible hinge photoelectric composite cable is characterized by comprising an optical fiber communication unit (2) and an electric transmission unit (3) which are arranged in parallel, wherein the optical fiber communication unit (2) is arranged on the left side, the electric transmission unit (3) is arranged on the right side, a longitudinal central reinforcing piece (1) with a rectangular cross section is arranged in the center between the optical fiber communication unit (2) and the electric transmission unit (3), the left long side of the rectangular cross section of the central reinforcing piece (1) is adjacent to the optical fiber communication unit (2), the right long side of the rectangular cross section of the central reinforcing piece (1) is adjacent to the electric transmission unit (3), and a filler (4) is twisted with the optical fiber communication unit (2), the electric transmission unit (3) and the central reinforcing piece (1) to form a cable core with an oval cross section; the cable core is coated with an inner sheath layer (5), a hinge layer (6), an outer sheath layer (7) and a supporting hand (8) from inside to outside in sequence to form a flexible hinge photoelectric composite cable;
the optical fiber communication unit (2) is characterized in that 2-12 optical fibers (21) are arranged in a loose tube (23), water-absorbing resin (22) is arranged in the loose tube (23), a plurality of carbon fiber filling ropes (24) are coated on the loose tube (23) in an S-shaped spiral hinge process structure, a nonmetal composite tape (25) is coated on the loose tube (23) and the carbon fiber filling ropes (24) to form the optical fiber communication unit with a circular cross section, the optical fibers (21) are single-mode tight-sleeve low-loss G.657 optical fibers and have excellent bending resistance, the bending radius of the optical fibers can reach 5.1mm at the minimum, the transmission loss is low, the water-absorbing resin (22) is formed by mixing water-blocking acrylate resin and carrier resin, the material of the loose tube (23) is engineering thermoplastic material polybutylene terephthalate, and the carbon fiber filling ropes (24) are bundle ropes made of carbon fibers, the nonmetal composite belt (25) is a Fiber Reinforced Polymer/Plastic (FRP), the FRP composite material is a high-performance material formed by mixing a Fiber material and a base material (resin) in proportion, and is light and hard, non-conductive, high in mechanical strength, corrosion-resistant, and good in mechanical property and water resistance;
the electricity transmission unit (3) comprises 2 copper wires (31) with insulating outer skins, an insulating layer (32), a carbon fiber filling rope (33) and a shielding layer (34), wherein the 2 copper wires (31) are mutually twisted, the insulating layer (32) coats the 2 copper wires (31), a plurality of carbon fiber filling ropes (33) are coated on the insulating layer (32) by an S-shaped spiral hinge process structure, the shielding layer (34) coats the insulating layer (32) and the carbon fiber filling rope (33) to form an electricity transmission unit with a circular cross section, the material of the insulating layer (32) is low-smoke halogen-free flame-retardant polyethylene plastic, the material of the shielding layer (34) is copper-coated aluminum wires with the diameter of 0.15 mm-0.30 mm, and the tensile strength and the elongation are enhanced due to the concentric coating of the surface of the copper-coated one layer.
2. The flexible hinge photoelectric composite cable according to claim 1, wherein the central strength member (1) is formed by twisting a glass fiber reinforced composite (GFRP) or an aramid fiber reinforced composite (KFRP) with a water-blocking spun yarn.
3. The flexible hinge photoelectric composite cable according to claim 1, wherein the filler (4) is composed of a water blocking rope and water blocking spun yarns, the water blocking rope is aramid fiber yarn wrapped by a water blocking tape, and the water blocking tape is a semi-conductive buffer water blocking tape.
4. The flexible hinge photoelectric composite cable according to claim 1, wherein the inner sheath layer (5) is extruded on the cable core and is made of polyurethane material or epoxy resin material.
5. The flexible hinge photoelectric composite cable according to claim 1, wherein the hinge layer (6) is coated on the outer surface of the inner sheath layer (5) by a double "S" hinge interlocking structure process, the used material is a low-density PTFE raw material tape, and the low-density PTFE raw material tape has the characteristics of good flexibility, low friction coefficient and the like, the overlapping rate of the low-density PTFE tape is up to 90% by the double "S" hinge interlocking structure process, and the low-density PTFE raw material tape has good flexibility and good tensile and compressive effects while not affecting the bending of the photoelectric composite cable.
6. The flexible hinge photoelectric composite cable according to claim 1, wherein the flat outer sheath layer (7) covers the central strength member (1), the optical fiber communication unit (2), the electric transmission unit (3), the filler (4), the inner sheath layer (5) and the hinge layer (6) together with the central strength member (1) as a center, an outer surface of the outer sheath layer (7) is composed of an upper plane, a lower plane, a left side surface and a right side surface, the upper plane and the lower plane of the outer sheath layer (7) are parallel to each other and symmetrical to each other, the left side surface and the right side surface of the outer sheath layer (7) are semi-cylindrical surfaces symmetrical to each other, a generatrix of a cylindrical surface of the left side surface and a generatrix of a cylindrical surface of the right side surface are parallel to each other, 2 longitudinal support hands (8) are provided on each of the upper plane and the lower plane of the outer sheath layer (7), and the 2 support hands (8) on the upper plane are arranged symmetrically to each other, the two support hands are parallel to each other, the 2 support hands on the lower plane are symmetrically arranged and parallel to each other, the 2 support hands (8) on the upper plane and the 2 support hands (8) on the lower plane are also symmetrical to each other, the centers of the upper and lower support hands (8) on the left side surface and the center of the optical fiber communication unit (2) are symmetrical to each other in parallel, the centers of the upper and lower support hands (8) on the right side surface and the center of the electric transmission unit (3) are symmetrical to each other in parallel, and the cross section of each support hand (8) is in an elliptical arc shape; support hand (8) and oversheath layer (7) and extrude integrative structure that forms for in same mould, the material of supporting hand (8) and oversheath layer (7) is the compound oversheath that polyurethane elastomer sheath + talcum powder + powder that blocks water + irradiation crosslinked polyvinyl chloride sheath constitutes, inside polyurethane elastomer can play the absorbed pressure, protect the inner structure effect, middle talcum powder and the powder mixture that blocks water also possess the effect of blocking water, outer irradiation crosslinked polyvinyl chloride has stronger weatherability and mechanical properties, adaptable more abominable outdoor natural environment, the flexible type hinge photoelectricity composite cable that has the structure of supporting hand has reduced frictional force when the installation is laid, good mechanical properties has, easily installation is laid.
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| CN202011145478.5A CN112151217A (en) | 2020-10-23 | 2020-10-23 | Flexible hinge photoelectric composite cable |
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| CN202011145478.5A CN112151217A (en) | 2020-10-23 | 2020-10-23 | Flexible hinge photoelectric composite cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115877529A (en) * | 2023-01-04 | 2023-03-31 | 江苏中天科技股份有限公司 | Fiber-reinforced optical cable and manufacturing method thereof |
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Application publication date: 20201229 |