Optical fiber composite overhead insulated phase line photoelectric separation structure for metropolitan area power distribution network

Abstract

The utility model relates to the technical field of optical fiber composite overhead phase lines, in particular to an optical fiber composite overhead insulated phase line photoelectric separation structure for a metropolitan area power distribution network, which comprises a tower pole, an IOPPC photoelectric composite cable, a lead, a photoelectric separation box, an optical fiber comprehensive splicing box and an optical unit splicing cable, the two IOPPC photoelectric composite cables are fixed to the two sides of the tower pole respectively, the adjacent ends of the two IOPPC photoelectric composite cables extend downwards and form down-leading cables respectively, and the high-voltage drainage wires in the middles of the two down-leading cables are electrically connected through the wire. One photoelectric separation box is fixed at the lower end of each segment of the down-leading cable; the utility model provides an optical fiber composite overhead insulated phase line photoelectric separation structure for a metropolitan area power distribution network, and aims to solve the problem that a photoelectric separation box in a traditional OPPC splicing structure is electrified, so that the safety of fault maintenance is improved, and the influence of power failure maintenance on the operation rate of a power supply network is reduced.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber composite overhead phase conductor technology, and in particular to an optical fiber composite overhead insulated phase conductor photoelectric separation structure for urban power distribution networks. Background Technology

[0002] Fiber Optic Composite Overhead Phase Conductor (OPPC) integrates power transmission and communication functions. It replaces one phase of the three-phase insulated overhead cable in the distribution network, forming a three-phase power system composed of two conductors and one OPPC.

[0003] In urban and rural power distribution network systems with 10kV-35kV OPPC fully insulated lines, most lines lack ground wires, while some lines are unsuitable for ADSS optical cables due to funding constraints or unsuitable tower structures, posing significant challenges to fiber optic transmission in urban and rural power distribution networks. Optical composite overhead phase line (OPPC) effectively solves the problems of wasted funds from repeated installations and the risk of ADSS optical cables being snagged and damaged during low-impact road construction.

[0004] The utility model with publication number CN204835429U discloses a splicing structure for a carbon fiber optoelectronic composite overhead phase line. The middle part of the high-voltage lead line is fixed to the back of the optoelectronic separation junction box by bolts. The optical fiber unit separated from the carbon fiber optoelectronic composite overhead phase line located in the conductor clamp is attached to the high-voltage lead line after being protected by a sleeve, and finally joined in the intermediate type optoelectronic separation junction box.

[0005] As described above, the middle part of the high-voltage lead wire is fixed to the back of the photoelectric separation junction box. The two are too close, which can easily cause the photoelectric separation junction box to become energized. When troubleshooting and finding faults in the fiber optic line, the power distribution line needs to be de-energized or the fault needs to be checked and found. This affects the operating rate of the power distribution network and the personal safety of maintenance personnel. Utility Model Content

[0006] In view of this, this utility model proposes an optical fiber composite overhead insulated phase wire photoelectric separation structure for urban power distribution networks, which aims to solve the problem of the photoelectric separation box being energized in the traditional OPPC splicing structure, thereby improving the safety of fault inspection and maintenance, and also reducing the impact of power outage maintenance on the operating rate of the power supply network.

[0007] The technical solution of this utility model is implemented as follows:

[0008] This utility model provides a fiber optic composite overhead insulated phase wire optoelectronic separation structure for metropolitan area power distribution networks, including a tower, an IOPPC optoelectronic composite cable, conductors, an optoelectronic separation box, a fiber optic integrated splice box, and optical unit splice cables.

[0009] One IOPPC optical and electrical composite cable is fixed on each side of the tower pole. The adjacent ends of the two IOPPC optical and electrical composite cables extend downward and respectively form a section of down-lead cable. The high-voltage drainage wires at the middle parts of the two sections of down-lead cables are electrically connected through the wire.

[0010] One optical and electrical separation box is fixed at the lower end of each section of down-lead cable, and the optical and electrical separation box is insulated from the down-lead cable.

[0011] The fiber optic integrated joint box is fixed on the tower pole. Two mutually connected optical unit joint cables are led out from the bottom of the fiber optic integrated joint box. The ends of the two optical unit joint cables far from the fiber optic integrated joint box extend upward and are respectively fixedly connected to one optical and electrical separation box. The optical units at the upper ends of the optical unit joint cables are jointed inside the optical and electrical separation box with the optical units at the lower ends of the down-lead cables.

[0012] Based on the above technical solutions, preferably, the high-voltage drainage wire of the down-lead cable is fixedly connected to the wire through a parallel groove clamp, where

[0013] The wire is arranged in a U shape.

[0014] Based on the above technical solutions, preferably, the optical and electrical separation box is arranged between the down-lead cable and the optical unit joint cable, where

[0015] The lower end of the down-lead cable is coaxially arranged with the upper end of the optical and electrical separation box and the optical unit joint cable.

[0016] Based on the above technical solutions, preferably, the middle parts of the two optical unit joint cables are arranged side by side vertically and fixed on the side of the tower pole, where

[0017] The lower end of the optical unit joint cable is bent in a U shape, and the upper end is bent in an L shape.

[0018] Based on the above technical solutions, preferably, the side of the down-lead cable is fixedly connected to the side of the tower pole through a first pin insulator, and the side of the upper end of the optical unit joint cable is fixedly connected to the side of the tower pole through a second pin insulator, where

[0019] Several horizontal first pin insulators and second pin insulators are arranged and are arranged in a shape like the Chinese character "丰" with the tower pole.

[0020] Based on the above technical solutions, preferably, a heat shrinkable insulation skirt is fixedly arranged on the side of the lower end of the down-lead cable, where

[0021] The heat shrinkable insulation skirt is located directly above the optical and electrical separation box.

[0022] Based on the above technical solutions, preferably, a cold-shrink insulating skirt is fixedly provided on the side of the upper end of the optical unit splice cable, wherein,

[0023] The cold-shrink insulating skirt is located directly below the photoelectric separation box.

[0024] Based on the above technical solutions, preferably, the photoelectric separation box includes a plastic box body, a plastic clamp, and a plastic box cover, wherein,

[0025] At least two plastic clamps are provided inside the plastic box, one of which clamps and fixes the outer sheath of the lower end of the downlead cable, and the other plastic clamps and fixes the outer sheath of the upper end of the optical unit splice cable;

[0026] The plastic lid and the plastic box body are fixedly connected by at least two plastic bolts, and the plastic lid and the plastic box body are sealed together.

[0027] Based on the above technical solutions, preferably, a heat-shrink tubing is fitted onto the upper port of the optical unit splice cable, wherein,

[0028] One end of the heat shrink tubing is fixedly connected to the optical unit splice cable, and the other end protrudes three centimeters from the port of the optical unit splice cable.

[0029] The protruding portion of the heat shrink tubing is used to fill structural adhesive.

[0030] Based on the above technical solutions, preferably, the photoelectric separation box further includes a protective sleeve, wherein,

[0031] One protective sleeve is fitted onto the outside of both the plastic box body and the plastic box lid;

[0032] The opposite ends of the two protective sleeves are fixedly connected by expansion buckles.

[0033] The optical fiber composite overhead insulated phase wire photoelectric separation structure for metropolitan area power distribution networks of this invention has the following advantages over existing technologies:

[0034] (1) By setting up a high-voltage lead-in line in the middle of the two down-lead cables and connecting it with a conductor, the transmission line is moved to the top, so that the high-voltage lead-in line is far away from the photoelectric separation box. At the same time, the lower end of the down-lead cable is connected to the optical unit through the photoelectric separation box and the down-lead cable is insulated. This facilitates photoelectric separation through the above structure, ensuring that the photoelectric separation box is not energized. This allows maintenance personnel to safely carry out fault repair work without power outages. This not only improves the safety of operation, but also reduces the impact of power outages on the operating rate of the power supply network.

[0035] (2) By arranging a number of first pin insulators and a number of second pin insulators in a shape of the character "Feng" with the tower pole, the structural layout is optimized, which not only ensures good insulation performance between components but also enhances the stability of the overall structure.

[0036] (3) By setting a heat shrinkable insulating skirt at the lower end of the downlead cable and a cold shrinkable insulating skirt at the upper end of the optical unit connecting cable, the weather resistance and protection ability of the equipment are improved, preventing damage to internal components caused by external environmental factors. At the same time, the creepage distance is increased to protect personal safety.

[0037] (4) By sleeving a heat shrinkable tube on the port of the optical unit connecting cable and filling structural adhesive in the part of the heat shrinkable tube protruding from the port of the optical unit connecting cable, the optical signal transmission path is effectively protected, preventing water from flowing down inside the connecting cable and causing potential safety hazards due to leakage.

[0038] (5) By setting the lower end of the optical unit connecting cable to be U-shaped bent, rainwater can be prevented from entering the optical fiber integrated connecting box along the optical unit connecting cable, improving the waterproof performance. At the same time, by setting the upper end of the optical unit connecting cable to be L-shaped bent, it is convenient for the upper end of the optical unit connecting cable to be aligned vertically with the lower end of the downlead cable, thus facilitating the connection operation of the optical unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 It is a layout diagram of the optical and electrical separation structure of the fiber optic composite overhead insulated phase wire for the metropolitan area distribution network of the present invention;

[0041] Figure 2 It is a partial explosion diagram of the optical and electrical separation structure of the fiber optic composite overhead insulated phase wire for the metropolitan area distribution network of the present invention;

[0042] Figure 3 It is Figure 2 a partial perspective view;

[0043] Figure 4 It is Figure 3 a partial explosion diagram;

[0044] In the diagram: 1. Tower; 2. IOPPC fiber optic composite cable; 3. Conductor; 4. Fiber optic separation box; 5. Fiber optic integrated splice box; 6. Optical unit splice cable; 7. Parallel groove clamp; 8. First pin insulator; 9. Second pin insulator; 21. Downlead cable; 22. Heat shrinkable insulating skirt; 41. Plastic box body; 42. Plastic clamp; 43. Plastic box cover; 44. Protective sleeve; 61. Cold shrinkable insulating skirt; 62. Heat shrinkable tubing. Detailed Implementation

[0045] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] like Figure 1-4 As shown, this utility model discloses an optical fiber composite overhead insulated phase wire photoelectric separation structure for urban power distribution networks, including a tower 1, an IOPPC photoelectric composite cable 2, a conductor 3, a photoelectric separation box 4, an optical fiber integrated splice box 5, and an optical unit splice cable 6.

[0047] One IOPPC fiber optic composite cable 2 is fixed on each side of the tower 1. The adjacent ends of the two IOPPC fiber optic composite cables 2 extend downwards to form a downlead cable 21. The high-voltage lead-in line in the middle of the two downlead cables 21 is electrically connected by a conductor 3. One optoelectronic separation box 4 is fixed at the lower end of each downlead cable 21, and the optoelectronic separation box 4 is insulated from the downlead cable 21. The fiber optic integrated splice box 5 is fixed on the tower 1. Two interconnected optical unit splice cables 6 are led out from the bottom of the fiber optic integrated splice box 5. The ends of the two optical unit splice cables 6 away from the fiber optic integrated splice box 5 extend upwards and are fixedly connected to an optoelectronic separation box 4. The optical unit at the upper end of the optical unit splice cable 6 and the optical unit at the lower end of the downlead cable 21 are connected inside the optoelectronic separation box 4.

[0048] The above-described structural layout achieves photoelectric separation and allows for the overhead placement of the transmission line, keeping it away from the photoelectric separation box 4. This ensures that the photoelectric separation box 4 is not energized, allowing maintenance personnel to safely perform fault repairs without power outages. This not only improves operational safety but also reduces the impact of power outages on the operating rate of the power supply network.

[0049] In the above-mentioned photoelectric separation structure, the high-voltage lead wire of the down-lead cable 21 is fixedly connected to the conductor 3 by a parallel groove clamp 7. The conductor 3 is U-shaped, and both ends of the conductor 3 are fixed to the high-voltage lead wire by a parallel groove clamp 7. Before fixing, the outer sheath of the down-lead cable 21 is stripped to expose the high-voltage lead wire. After fixing, the stripped part of the down-lead cable 21 is waterproofed.

[0050] The optoelectronic separation box 4 is disposed between the downlead cable 21 and the optical unit connection cable 6, wherein the lower end of the downlead cable 21 is coaxially disposed with the upper end of the optoelectronic separation box 4 and the optical unit connection cable 6. This structure facilitates the optical unit connection operation between the downlead cable 21 and the optical unit connection cable 6.

[0051] The middle sections of the two optical unit splice cables 6 are arranged vertically side by side, and the middle sections of the optical unit splice cables 6 are fixed to the side of the tower 1 using steel strip rubber clips. The lower end of the optical unit splice cable 6 is bent in a U-shape for waterproofing the bottom of the fiber optic integrated splice box 5, and the upper end is bent in an L-shape to facilitate the alignment of the upper end of the optical unit splice cable 6 with the lower end of the downlead cable 21, thereby facilitating the splicing operation of the optical unit.

[0052] In the aforementioned photoelectric separation structure, the side of the downlead cable 21 is fixedly connected to the side of the tower 1 via a first pin insulator 8, and the upper end of the optical unit connecting cable 6 is fixedly connected to the side of the tower 1 via a second pin insulator 9. Several first pin insulators 8 and second pin insulators 9 are horizontally arranged. These first pin insulators 8 and second pin insulators 9 are arranged in a U-shape with the tower 1. This structure optimizes the structural layout, ensuring good insulation performance between components and enhancing the overall structural stability.

[0053] A heat-shrinkable insulating skirt 22 is fixedly installed on the side of the lower end of the downlead cable 21, and a cold-shrinkable insulating skirt 61 is fixedly installed on the side of the upper end of the optical unit splicing cable 6. The heat-shrinkable insulating skirt 22 is located directly above the photoelectric separation box 4, and the cold-shrinkable insulating skirt 61 is located directly below the photoelectric separation box 4. This structure effectively improves the weather resistance and protection capability of the equipment, prevents external environmental factors from damaging the internal components, and makes the structural layout of the aforementioned photoelectric separation structure more reasonable.

[0054] In the aforementioned photoelectric separation structure, the photoelectric separation box 4 includes a plastic box body 41, plastic clamps 42, and a plastic box cover 43. At least two plastic clamps 42 are provided inside the plastic box body 41. One clamp holds and fixes the outer sheath of the lower end of the downlead cable 21, and the other clamp holds and fixes the outer sheath of the upper end of the optical unit connection cable 6. The plastic box cover 43 is fixedly connected to the plastic box body 41 by at least two plastic bolts, and a seal is formed between the plastic box cover 43 and the plastic box body 41. When the plastic box body 41 and the plastic box cover 43 are fastened and fixed, the optical unit connection point is sealed to reduce interference from the external environment. Furthermore, the fact that the plastic box cover 43 and the plastic box body 41 are fixedly connected by only two plastic bolts facilitates installation and disassembly, and facilitates subsequent maintenance.

[0055] The joint between the plastic box body 41 and the plastic box cover 43 features a concave-convex structure to facilitate installation, positioning, and sealing with adhesive, preventing rainwater from seeping into the casing and causing safety hazards. Specifically, the groove is located on the plastic box body 41, while the protrusion is located on the plastic box cover 43. Before the plastic box body 41 and the plastic box cover 43 are fastened together, adhesive is applied to the groove. After fastening, the protrusion is embedded in the groove, forming a sealed structure. Furthermore, the photoelectric separation box 4 also includes protective sleeves 44, one for each of the plastic box body 41 and the plastic box cover 43. The opposite ends of the two protective sleeves 44 are fixedly connected by expansion buckles. By wrapping the fastened plastic box cover 43 and the plastic box body 41 with the two protective sleeves 44, a double seal is achieved, resulting in a better sealing effect.

[0056] The plastic clamp 42 has a semi-circular ring structure and is connected to the plastic box body 41 by plastic bolts. At the same time, the plastic clamp 42 is also provided with threaded holes, and the connecting bolts of the plastic box cover 43 and the plastic box body 41 are screwed into the threaded holes to fix the plastic box cover 43 and the plastic box body 41.

[0057] Furthermore, the inner ring surface of the plastic clamp 42 serves as the first clamping surface, and correspondingly, the interior of the optoelectronic separation box 4 is provided with a semi-circular groove, the groove surface of which serves as the second clamping surface. The first and second clamping surfaces cooperate to clamp the downlead cable 21 or the optical unit splice cable 6. Further, multiple transverse trapezoidal annular teeth are designed on both clamping surfaces, and the annular teeth on the two clamping surfaces are staggered to increase the clamping force and contact area of ​​the cable, improving the cable's tensile and torsional resistance.

[0058] In the aforementioned optoelectronic separation structure, a heat-shrinkable sleeve 62 is fitted onto the upper end of the optical unit connector cable 6. One end of the heat-shrinkable sleeve 62 is fixedly connected to the optical unit connector cable 6, while the other end protrudes three centimeters from the end of the optical unit connector cable 6. The protruding portion of the heat-shrinkable sleeve 62 is filled with structural adhesive to seal the end of the optical unit connector cable 6, effectively protecting the optical signal transmission path and preventing water from flowing down from inside the connector cable, thus preventing leakage and potential safety hazards. The structural adhesive is 704 adhesive.

[0059] In the aforementioned optoelectronic separation structure, the fiber optic integrated splice box 5 uses SMC material, an insulating material that prevents charge accumulation on the box surface, ensuring the safe operation of power grid communication. The box fulfills the functions of fiber optic distribution products, including information acquisition, communication, fiber optic splicing, storage, splitting, and fiber distribution. It enables bidirectional communication and management of the power terminal equipment at the access point via the ONU. This improves the operational efficiency of power distribution fiber optics and significantly reduces the operation and maintenance costs of the power distribution network.

[0060] The construction steps of the optical fiber composite overhead insulated phase wire photoelectric separation structure for urban power distribution networks according to this utility model are as follows:

[0061] Before the IOPPC fiber optic composite cable 2 enters the fiber optic separation box 4, the length of the outer sheath to be stripped is determined and marked according to the cable's fixed position in the fiber optic splice box 5 and the required fiber coil slack. Specialized tools such as a roller cutter are used to remove the outer sheath, aluminum stranded wire, and steel stranded wire, leaving only the optical unit portion. The fiber optic separation box 4, splice cable outer sheath, and insulating skirt are installed. The splice cable is fixed, sealed with adhesive, and pin-type insulators are used to fix the top and bottom ends of the fiber optic separation box 4 to prevent wind damage to the box and optical units. The optical unit splice cable 6 is secured with steel tape and rubber clamps to prevent wind damage, ensuring neat and aesthetically pleasing wiring. The lower end of the optical unit splice cable 6 enters the fiber optic splice box 5, where fiber splicing is performed, followed by testing and network debugging. The two sections of the IOPPC fiber optic composite cable 2's lower cable 21 are connected using conductor 3 and parallel groove clamp 7, achieving fiber optic separation of the IOPPC fiber optic composite cable 2.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optical fiber composite overhead insulated phase line photoelectric separation structure for a metropolitan power distribution network, comprising a tower pole (1), characterized in that: It also includes an IOPPC optical and electrical composite cable (2), a wire (3), an optical and electrical separation box (4), an optical fiber integrated connection box (5), and an optical unit connection cable (6). Among them, One IOPPC optical and electrical composite cable (2) is fixed on each side of the tower pole (1). The adjacent ends of the two IOPPC optical and electrical composite cables (2) extend downward and respectively form a section of downlead cable (21). The high-voltage drainage wires at the middle parts of the two sections of downlead cables (21) are electrically connected through the wire (3); One optical and electrical separation box (4) is fixed at the lower end of each section of downlead cable (21), and the optical and electrical separation box (4) is insulated from the downlead cable (21); The optical fiber integrated connection box (5) is fixed on the tower pole (1). Two mutually connected optical unit connection cables (6) are led out from the bottom of the optical fiber integrated connection box (5). The ends of the two optical unit connection cables (6) far from the optical fiber integrated connection box (5) extend upward and are respectively fixedly connected to one optical and electrical separation box (4). The optical units at the upper ends of the optical unit connection cables (6) are connected to the optical units at the lower ends of the downlead cables (21) inside the optical and electrical separation box (4).

2. The optical fiber composite overhead insulated phase conductor photoelectric separation structure for a metropolitan distribution network according to claim 1, characterized in that: The high-voltage drainage wire of the downlead cable (21) and the wire (3) are fixedly connected through a parallel groove clamp (7). Among them, The wire (3) is arranged in a U shape.

3. The optical fiber composite overhead phase conductor optical photo-separation structure for a metropolitan distribution network of claim 1, wherein: The optical and electrical separation box (4) is arranged between the downlead cable (21) and the optical unit connection cable (6). Among them, The lower end of the downlead cable (21) is coaxially arranged with the upper end of the optical and electrical separation box (4) and the optical unit connection cable (6).

4. The optical fiber composite overhead phase conductor optical photo-separation structure for a metropolitan distribution network of claim 1, wherein: The middle parts of the two optical unit connection cables (6) are arranged side by side vertically and fixed on the side of the tower pole (1). Among them, The lower end of the optical unit connection cable (6) is bent in a U shape, and the upper end is bent in an L shape.

5. The optical fiber composite overhead phase conductor optical photo-separation structure for a metropolitan distribution network of claim 4, wherein: The side of the downlead cable (21) is fixedly connected to the side of the tower pole (1) through a first pin insulator (8). The side of the upper end of the optical unit connection cable (6) is fixedly connected to the side of the tower pole (1) through a second pin insulator (9). Among them, A number of the first pin insulators (8) and the second pin insulators (9) are arranged horizontally and are arranged in a cross shape with the tower pole (1).

6. The optical fiber composite overhead phase conductor optical photo-separation structure for a metropolitan distribution network of claim 5, wherein: A heat shrinkable insulating skirt (22) is fixedly arranged on the side of the lower end of the downlead cable (21). Among them, The heat shrinkable insulating skirt (22) is located directly above the optical and electrical separation box (4).

7. The optical fiber composite overhead insulated phase wire photoelectric separation structure for urban power distribution networks as described in claim 5, characterized in that: A cold shrinkable insulating skirt (61) is fixedly arranged on the side of the upper end of the optical unit connection cable (6). Among them, The cold shrinkable insulating skirt (61) is located directly below the optical and electrical separation box (4).

8. The optical fiber composite overhead insulated phase wire photoelectric separation structure for metropolitan area power distribution networks as described in claim 1, characterized in that: The optical and electrical separation box (4) includes a plastic box body (41), a plastic clamp (42), and a plastic box cover (43). Among them, At least two plastic clamps (42) are arranged inside the plastic box body (41). One of the plastic clamps (42) clamps and fixes the outer skin of the lower end of the downlead cable (21), and the other plastic clamp (42) clamps and fixes the outer skin of the upper end of the optical unit connection cable (6); The plastic box cover (43) and the plastic box body (41) are fixedly connected by at least two plastic bolts, and the plastic box cover (43) and the plastic box body (41) are sealingly arranged.

9. The optical fiber composite overhead insulated phase wire photoelectric separation structure for metropolitan area power distribution networks as described in claim 8, characterized in that: The heat shrinkable sleeve (62) is sleeved on the port of the upper end of the optical unit connecting cable (6), wherein, One end of the heat shrinkable sleeve (62) is fixedly connected with the optical unit connecting cable (6), and the other end protrudes three centimeters from the port of the optical unit connecting cable (6); The protruding part of the heat shrinkable sleeve (62) is used for filling structural glue.

10. The optical fiber composite overhead insulated phase wire photoelectric separation structure for metropolitan area power distribution networks as described in claim 8, characterized in that: The photoelectric separation box (4) further comprises a protective sleeve (44), wherein, The protective sleeve (44) is arranged outside the plastic box body (41) and the plastic box cover (43) respectively; The opposite ends of the two protective sleeves (44) are fixedly connected by expansion buckles.

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