Aluminum-clad PBT tubular optical fiber composite overhead ground wire

Abstract

The utility model discloses an aluminum-clad PBT (polybutylene terephthalate) tubular optical fiber composite overhead ground wire, which particularly relates to the technical field of overhead ground wires, and comprises an aluminum tube, an optical fiber, a central reinforcing core, a PBT optical unit, a polyimide film and an aluminum-clad steel monofilament, the optical fiber, the central reinforcing core, the PBT optical unit and the polyimide film are all arranged in the aluminum tube, and the aluminum-clad steel monofilament is arranged in the aluminum tube. The optical fiber, the PBT optical unit and the central reinforcing core are all arranged in the polyimide film, the optical fiber is arranged in the PBT optical unit, the aluminum-clad steel monofilament is spirally wound outside the aluminum pipe, and a plurality of groups of auxiliary parts for reducing electromagnetic interference are arranged outside the overhead ground wire main body. According to the utility model, the aluminum strips with consistent thickness are longitudinally connected and welded, so that a closed aluminum pipe can be formed and is coated outside a processed product, the wall thickness of the aluminum pipe is consistent, the concentricity of the product is high, the core shift is avoided, the outer diameter of the product is small, the number of single wires on the outer layer can be effectively reduced, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to overhead ground wire technical field more specifically, it is a kind of aluminium PBT tubular optical fiber composite overhead ground wire. BACKGROUND

[0002] Optical fiber composite overhead ground wire is a kind of composite ground wire combined optical fiber communication and power transmission function, in power system, optical fiber composite overhead ground wire is mainly used for the grounding and lightning protection of high-voltage transmission line, simultaneously provides high-speed data transmission service, and has wide application prospect in power and communication field.

[0003] There is basically only one kind of aluminium pipe type optical fiber composite overhead ground wire in the existing market.Aluminium pipe type optical fiber composite overhead ground wire often cannot meet the requirement of optical cable outer diameter when designing product due to the fact that seamless extruded aluminium pipe wall thickness is larger, because in actual use, outer diameter can affect the performance of optical cable wind pressure resistance, icing resistance etc., so under the condition of equal rated tensile strength and short-circuit current capacity, the smaller the outer diameter is, the better it is.And it can cause great waste of aluminium material when producing extruded aluminium pipe, additionally increase the cost of cable. SUMMARY

[0004] In order to overcome the above-mentioned defects of prior art, the utility model provides an aluminium PBT tubular optical fiber composite overhead ground wire, by operating the longitudinal connection welding of the uniform thickness aluminium band, so as to form closed aluminium pipe, which is coated outside the product to be processed, so that the aluminium pipe wall thickness is uniform, the product concentricity is high and has the effect of not deviating from the core, and the product outer diameter is small, thereby effectively reducing the number of outer layer filaments, thereby saving cost, to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: an aluminium PBT tubular optical fiber composite overhead ground wire, comprising an overhead ground wire main body;

[0006] The overhead ground wire main body includes aluminium pipe, optical fiber, central reinforcing core, PBT optical unit, polyimide film and aluminium clad steel filament, the optical fiber, central reinforcing core, PBT optical unit and polyimide film are all arranged inside the aluminium pipe, the optical fiber, PBT optical unit and central reinforcing core are all arranged inside the polyimide film, the optical fiber is arranged inside the PBT optical unit, and the aluminium clad steel filament is spirally wound outside the aluminium pipe.

[0007] In a preferred embodiment, a plurality of auxiliary components for reducing electromagnetic interference are arranged outside the overhead ground wire main body;

[0008] Each auxiliary component includes two fixing rings and two supporting rings, the two supporting rings correspond to the positions of the two fixing rings in up and down directions, the two supporting rings are both arranged on the top of the aluminium pipe, and the two fixing rings are both arranged on the bottom of the aluminium pipe.

[0009] The metal plates are externally provided with a plurality of through holes.

[0010] In a preferred embodiment, the two metal plates are externally provided with a plurality of positioning columns.

[0011] The two ends of the positioning columns at the top of the aluminum pipe are fixed to the two support rings, and the two ends of the positioning columns at the bottom of the aluminum pipe are fixed to the two fixed rings.

[0012] In a preferred embodiment, the support rings are externally provided with support plates.

[0013] In a preferred embodiment, the fixed rings are externally provided with fixed plates.

[0014] In a preferred embodiment, the support plates are externally provided with fasteners, which are externally provided with fastening nuts.

[0015] The technical effects and advantages of the present application are as follows:

[0016] 1. The aluminum pipe is formed by longitudinal connection and welding of the aluminum tape with uniform thickness, which is wrapped outside the product to be processed, so that the aluminum pipe has uniform wall thickness, high concentricity and non-core deviation effect, and the product has small outer diameter, thereby effectively reducing the number of outer single wires and saving cost.

[0017] 2. The aluminum pipe is wrapped by the two metal plates, and the through holes on the outer surface of the metal plates and the high conductivity of the metal plates allow the electromagnetic waves to generate induced current on the surface of the metal plates when encountering the metal plates, which can offset or weaken the energy of the incident electromagnetic waves, thereby achieving shielding effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the overall structure of the present application.

[0019] Figure 2 The figure is a side view of the metal plate of the present application.

[0020] Figure 3 The figure is an exploded view of the metal plate of the present application.

[0021] Figure 4 The figure is a side view of the support ring of the present application.

[0022] Figure 5 The fixed ring side view of the utility model.

[0023] The figure signs are: 1, aluminum pipe; 2, optical fiber; 3, central reinforcing core; 4, PBT optical unit; 5, polyimide film; 6, aluminum-coated steel filament; 7, fixed ring; 8, supporting ring; 9, metal plate; 10, through hole; 11, positioning column; 12, supporting plate; 13, supporting hole; 14, fixed plate; 15, fixed hole; 16, fastener; 17, fastening nut. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0025] Referring to the drawings in the description Figures 1-5 , the utility model provides a kind of aluminum-coated PBT pipe type optical fiber composite overhead ground wire, including overhead ground wire main body;

[0026] As Figure 1 Indicated, the overhead ground wire main body includes aluminum pipe 1, optical fiber 2, central reinforcing core 3, PBT optical unit 4, polyimide film 5 and aluminum-coated steel filament 6, the optical fiber 2, central reinforcing core 3, PBT optical unit 4 and polyimide film 5 are all arranged in aluminum pipe 1 interior, the optical fiber 2, PBT optical unit 4 and central reinforcing core 3 are all arranged in polyimide film 5 interior, the optical fiber 2 is arranged in PBT optical unit 4 interior, the aluminum-coated steel filament 6 is spirally wound in aluminum pipe 1 outside.

[0027] Staff operates the aluminum band of uniform thickness to carry out longitudinal connection welding, so that closed aluminum pipe 1 can be formed, is coated in the outside of the product to be processed, so that the wall thickness of aluminum pipe 1 is uniform, product concentricity is high and has the effect of not deviating core, and product outer diameter is small, thereby effectively reducing the number of outer single filaments, to save cost.

[0028] In order to avoid electromagnetic interference on overhead ground wire main body, as Figures 1-5As shown, the overhead ground wire body is externally provided with a plurality of auxiliary components for reducing electromagnetic interference; each auxiliary component comprises two fixing rings 7 and two supporting rings 8, the two supporting rings 8 correspond to the upper and lower positions of the two fixing rings 7 respectively, the two supporting rings 8 are sleeved on the top of the aluminum pipe 1, and the two fixing rings 7 are arranged at the bottom of the aluminum pipe 1; metal plates 9 are arranged between the two fixing rings 7 and the two supporting rings 8, and a plurality of through holes 10 are formed in the outer surface of the metal plates 9, the metal plates 9 are fixed to the top of the aluminum pipe 1 by the two supporting rings 8, and then the metal plates 9 are fixed to the bottom of the aluminum pipe 1 by the two fixing rings 7, so that the aluminum pipe 1 can be wrapped by the two metal plates 9, and due to the through holes 10 formed in the outer surface of the metal plates 9 and the high conductivity of the metal plates 9, when electromagnetic waves encounter the metal plates 9, induced current will be generated on the surface of the metal plates 9, and these currents will offset or weaken the energy of the incident electromagnetic waves, thereby achieving a shielding effect.

[0029] In order to improve the protection of the metal plates 9, as shown in Figures 1-5 the two metal plates 9 are provided with a plurality of positioning columns 11 on the side away from each other, and the positioning columns 11 are uniformly and spacedly arranged; the two ends of the positioning columns 11 located at the top of the aluminum pipe 1 are fixed together with the sides of the two supporting rings 8 close to each other, the two ends of the positioning columns 11 located at the bottom of the aluminum pipe 1 are fixed together with the sides of the two fixing rings 7 close to each other, the positioning columns 11 between the two supporting rings 8 shield and protect the outer surface of the metal plates 9 located at the top of the aluminum pipe 1, and the positioning columns 11 between the two fixing rings 7 can shield and protect the outer surface of the metal plates 9 located at the bottom of the aluminum pipe 1, so that the impact can not directly act on the metal plates 9, and the use performance of the metal plates 9 is ensured.

[0030] In order to facilitate the installation of the auxiliary components to the outer surface of the aluminum pipe 1, as shown in Figures 1-5 the supporting plates 12 are arranged on both sides of the bottom end of the supporting ring 8, and the supporting holes 13 are formed in the outer surface of the supporting plate 12, the fixing plates 14 are arranged on both sides of the top end of the fixing ring 7, the fixing holes 15 are formed in the outer surface of the fixing plate 14, the fasteners 16 are arranged on the top of the supporting plate 12, the fasteners 16 sequentially penetrate through the supporting holes 13 and the fixing holes 15 and extend to the bottom of the fixing plate 14, the fastening nuts 17 are threadedly connected to the bottom end of the fasteners 16, and the fastening nuts 17 are arranged at the bottom of the fixing plate 14, so that the fasteners 16 are fixed between the supporting plate 12 and the fixing plate 14, and then the fastening nuts 17 and the bottom end of the fasteners 16 are threadedly fixed together, so that the fixing ring 7 and the supporting ring 8 are connected as a whole, the connection between the auxiliary components and the aluminum pipe 1 is ensured to be tight and stable, and the auxiliary components can be conveniently disassembled and assembled.

[0031] Finally: the above described is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An aluminum clad PBT tubular fiber optic composite overhead ground wire characterized by: The overhead ground wire body comprises an aluminum pipe (1), an optical fiber (2), a central reinforcing core (3), a PBT optical unit (4), a polyimide film (5) and an aluminum-clad single wire (6), the optical fiber (2), the central reinforcing core (3), the PBT optical unit (4) and the polyimide film (5) are arranged inside the aluminum pipe (1), the optical fiber (2), the PBT optical unit (4) and the central reinforcing core (3) are arranged inside the polyimide film (5), the optical fiber (2) is arranged inside the PBT optical unit (4), and the aluminum-clad single wire (6) is spirally wound outside the aluminum pipe (1). A plurality of auxiliary components for reducing electromagnetic interference are arranged outside the overhead ground wire body.

2. The aluminum clad PBT tubular fiber optic composite overhead ground wire of claim 1, wherein: Each auxiliary component comprises two fixing rings (7) and two supporting rings (8), the two supporting rings (8) correspond to the upper and lower positions of the two fixing rings (7) respectively, the two supporting rings (8) are sleeved on the top of the aluminum pipe (1), and the two fixing rings (7) are arranged on the bottom of the aluminum pipe (1). Metal plates (9) are arranged between the two fixing rings (7) and the two supporting rings (8), and a plurality of through holes (10) are arranged on the outer side of the metal plates (9). A plurality of positioning columns (11) are arranged on the side away from each other of the two metal plates (9), and the positioning columns (11) are uniformly and spacedly arranged.

3. The aluminum clad PBT tubular fiber optic composite overhead ground wire of claim 2, wherein: The ends of the positioning columns (11) on the top of the aluminum pipe (1) are fixed to the side close to the two supporting rings (8), and the ends of the positioning columns (11) on the bottom of the aluminum pipe (1) are fixed to the side close to the two fixing rings (7). Supporting plates (12) are arranged on the bottom of the supporting rings (8), and supporting holes (13) are arranged on the outer side of the supporting plates (12).

4. The aluminum clad PBT tubular fiber optic composite overhead ground wire of claim 2, wherein: Fixing plates (14) are arranged on the top of the fixing rings (7), and fixing holes (15) are arranged on the outer side of the fixing plates (14).

5. The aluminum clad PBT tubular fiber optic composite overhead ground wire of claim 2, wherein: Fasteners (16) are arranged on the top of the supporting plates (12), the fasteners (16) extend to the bottom of the fixing plates (14) through the supporting holes (13) and the fixing holes (15) in sequence, fastening nuts (17) are arranged on the outer side of the bottom of the fasteners (16), and the fastening nuts (17) are arranged on the bottom of the fixing plates (14).

6. The aluminum clad PBT tubular fiber optic composite overhead ground wire of claim 4, wherein: ​

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