CN209169909U - OPGW optical cable draws lower device at a kind of substation architecture - Google Patents

Abstract

The present disclosure provides an OPGW optical cable down-conducting device at a substation structure, including: a dedicated ground wire, which is electrically connected to the end of the OPGW optical cable and the frame; the dedicated ground wire is also connected to the top of the frame and the fixing point at the lowermost end of the frame, respectively. The down conductor of the OPGW optical cable is electrically connected to the frame, so that the OPGW optical cable is reliably grounded at the top of the frame, the lowermost fixed point of the frame and the end of the OPGW optical cable; the lowermost fixed point of the frame is set between the splice box and the redundant cable frame , the junction box is arranged above the redundant cable frame; the junction box is supported and fixed with the frame by matching hoop and composite needle insulators; the remaining cable frame is also supported by matching hoop and composite needle insulators The structure is supported and fixed.

Description

An OPGW optical cable down-conducting device at the substation structure

technical field

The present disclosure belongs to the field of power equipment, and in particular relates to an OPGW optical cable down-conducting device at a substation structure.

Background technique

The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

OPGW optical cable, Optical fiber composite overhead ground wires, also known as optical fiber composite overhead ground wires, has the dual functions of lightning protection ground wires and communication optical cables. Due to its high reliability, superior mechanical properties, and good economy, OPGW optical cables are widely used in new and reconstructed lines of 110kV and above in Shandong.

OPGW optical cables are erected on top of transmission line towers and are more vulnerable to lightning strikes than other types of optical cables. Since the OPGW optical cable carries a large number of power grid production and operation and company management business, its safe and reliable operation is of great significance. In view of the fact that in recent years, many regions of the country have occurred in various regions of the country, the aging of the OPGW optical cable down-conducting device at the substation structure and the non-standard construction lead to the ablation and interruption of the optical cable, which has attracted great attention from the industry.

Utility model content

One or more embodiments of the present disclosure provide an OPGW optical cable down-drop device at a substation structure, which can improve the intrinsic safety level of a power communication network and reduce the pressure of daily safe operation.

An OPGW optical cable down-conducting device at a substation structure of the present disclosure includes:

A dedicated ground wire, which is electrically connected to the end of the OPGW optical cable and the frame; the dedicated ground wire is also electrically connected to the OPGW optical cable down-conductor and the frame at the top of the frame and the fixed point at the lowermost end of the frame, so that the OPGW optical cable is at the top of the frame. , The bottom fixed point of the frame and the end of the OPGW cable are reliably grounded;

The lowermost fixing point of the frame is arranged between the splicing box and the remaining cable frame, and the splicing box is arranged above the remaining cable frame; the splicing box is supported and fixed to the frame by a matching hoop and a composite pin insulator; The remaining cable frame is also supported and fixed with the frame by matching hoop and composite pin insulator.

In one or more embodiments, a fixture is installed at every preset distance on the down conductor of the OPGW optical cable to prevent the OPGW optical cable from swinging and rubbing against the structure.

In one or more embodiments, the fixture includes a composite pin type insulator down conductor clip, and each composite pin type insulator down conductor clip cooperates with a hoop to fix the OPGW optical cable down conductor on the structural column.

In one or more embodiments, an OPGW optical cable sign is provided at the center of the redundant cable rack, and the OPGW optical cable sign is fixed to the redundant cable rack.

In one or more embodiments, one end of the dedicated ground wire is a parallel groove wire clip, and the other end is fixed on a reserved hole of the structure.

In one or more embodiments, the diameter of the redundant cable rack is 1 m, and the center position of the redundant cable rack is 1.8-2 m above the ground.

In one or more embodiments, the base of the splice box is 2.5-3 m above the ground.

In one or more embodiments, the OPGW fiber optic cable label and the residual cable rack are bolted.

In one or more embodiments, a fixing hole is provided on the redundant cable frame, the fixing hole is arranged 100 mm above the center of the redundant cable frame, and the diameter of the fixing hole is 12 mm.

Compared with the prior art, the beneficial effects of the present disclosure are:

(1) In the OPGW fiber optic cable pulling device at the substation structure of the present disclosure, the OPGW fiber optic cable is pulled down at the top of the frame, the lowermost fixed point of the frame, and the end of the fiber optic cable to perform reliable electrical connection with the frame through a matching special ground wire, so that the OPGW fiber optic cable is connected reliably. Reliable grounding at the top of the frame, the fixed point at the bottom of the frame and the end of the OPGW optical cable can avoid the discharge and ablation of the lower part of the OPGW optical cable gantry, improve the intrinsic safety level of the power communication network, and reduce the pressure of daily safe operation.

(2) The down-conducting clamp of the insulating hoop and the composite pin insulator is used for the down-conducting of the optical cable to replace the traditional fixing fixture with an insulating rubber pad which is easy to age and break, which improves the service life and utilization rate of the OPGW optical cable down-conducting device.

Description of drawings

The accompanying drawings that constitute a part of the present disclosure are used to provide further understanding of the present disclosure, and the exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure.

FIG. 1 is a schematic structural diagram of an OPGW optical cable down-conducting device at a substation structure of the present disclosure.

Figure 2 is a schematic diagram of the reliable connection between the 1OPGW optical cable and the structure using a dedicated ground wire.

Figure 3 is a schematic diagram of the structure of the fixture.

Figure 4 is a schematic diagram of the structure of the redundant cable frame.

Figure 5 is a schematic diagram of the structure of the splice box.

Detailed ways

It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

As shown in FIG. 1 , an OPGW optical cable down-conducting device at a substation structure of the present disclosure includes:

A dedicated ground wire, which is electrically connected to the end of the OPGW optical cable and the frame; the dedicated ground wire is also electrically connected to the OPGW optical cable down-conductor and the frame at the top of the frame and the fixed point at the lowermost end of the frame, so that the OPGW optical cable is at the top of the frame. , The bottom fixed point of the frame and the end of the OPGW cable are reliably grounded;

The lowermost fixing point of the frame is arranged between the splicing box and the remaining cable frame, and the splicing box is arranged above the remaining cable frame; the splicing box is supported and fixed to the frame by a matching hoop and a composite pin insulator; The remaining cable frame is also supported and fixed with the frame by matching hoop and composite pin insulator.

In one or more embodiments, one end of the dedicated ground wire is a parallel groove wire clip, and the other end is fixed on a reserved hole of the structure.

The special grounding wire model adopts GWA-150-251, for example: the length is 2.5m, one end is a parallel groove clamp, and the other end is fixed on the reserved hole of the structure with M16 bolts, as shown in Figure 2.

It should be noted that the length of the dedicated ground wire can be selected according to the actual situation.

In one or more embodiments, a fixture is installed at every preset distance on the down conductor of the OPGW optical cable to prevent the OPGW optical cable from swinging and rubbing against the structure.

For example: install a fixture every 1.5m ~ 2m.

For the upper and lower parts of the beam, one lengthened wire clip should be set up to fix it.

In a specific implementation, as shown in FIG. 3 , the fixture includes a composite pin-type insulator down-conductor clip, and each composite-pin insulator down-conductor clip cooperates with a hoop to fix the OPGW optical cable down-conductor on the frame column .

Specifically, galvanized hoop can be used to avoid corrosion and affect the service life and utilization rate of the OPGW optical cable down-conducting device at the entire substation structure.

As shown in FIG. 4 , an OPGW optical cable sign is arranged at the center of the redundant cable rack, and the OPGW optical cable sign is fixed to the redundant cable rack.

The OPGW optical cable label and the remaining cable frame are fixed with bolts.

In Figure 4, the redundant cable rack is connected to the hoop through a pin insulator.

A fixing hole is arranged on the excess cable rack, the fixing hole is located 100mm above the center of the excess cable rack, and the diameter of the fixing hole is 12mm.

In one or more embodiments, the diameter of the redundant cable rack is 1 m, and the center position of the redundant cable rack is 1.8-2 m above the ground.

Selecting the above dimensions for the redundant cable rack can save space for the redundant cable rack on the one hand, and on the other hand, can better protect the grounding cable and avoid man-made damage.

It should be noted that the diameter of the residual cable rack and the distance from the center position to the ground are determined according to the actual situation.

As shown in Figure 5, the splice box is installed on the splice box mounting bracket, and the splice box mounting bracket is connected to the hoop through a pin insulator.

In a specific implementation, the base of the splice box is 2.5-3m above the ground. This height is convenient for later manual maintenance.

In the OPGW fiber optic cable leading device at the substation structure of the present disclosure, the OPGW fiber optic cable is led down at the top of the structure, the lowermost fixed point of the structure, and the end of the fiber optic cable are reliably electrically connected to the structure through a matching special ground wire, so that the OPGW fiber optic cable is at the top of the structure. . The bottom fixed point of the frame and the end of the OPGW optical cable are reliably grounded, which can avoid the discharge and ablation of the lower part of the OPGW optical cable gantry, improve the intrinsic safety level of the power communication network, and reduce the pressure of daily safe operation.

The down-conducting clamp of the optical cable adopts the insulating hoop and the composite pin-type insulator to replace the traditional fixing fixture with insulating rubber pad which is easy to age and break, which improves the service life and utilization rate of the OPGW optical cable down-conducting device.

The construction process of the OPGW optical cable down-conducting device at the substation structure of the present disclosure can not only improve the problems existing in the traditional OPGW optical cable down-construction construction, but also improve the intrinsic safety level of the power communication network and reduce the pressure of daily safe operation.

Although the specific embodiments of the present disclosure have been described above in conjunction with the accompanying drawings, they do not limit the protection scope of the present disclosure. Those skilled in the art should understand that on the basis of the technical solutions of the present disclosure, those skilled in the art do not need to pay creative efforts. Various modifications or variations that can be made are still within the protection scope of the present disclosure.

Claims (9)

1. an OPGW optical cable down-conducting device at a substation structure, is characterized in that, comprising: a dedicated ground wire, which is electrically connected with the end of the OPGW optical cable and the frame; the dedicated ground wire is also at the top of the frame and the lowermost fixed point of the frame Make electrical connections with the OPGW optical cable down-conductor and the frame respectively, so that the OPGW optical cable is reliably grounded at the top of the frame, the fixed point at the bottom of the frame and the end of the OPGW optical cable; The lowermost fixing point of the frame is arranged between the splicing box and the remaining cable frame, and the splicing box is arranged above the remaining cable frame; the splicing box is supported and fixed to the frame by matching hoop and composite pin insulators; The remaining cable frame is also supported and fixed with the frame by matching hoop and composite pin insulator. 2. The OPGW optical cable down-conducting device at a substation structure as claimed in claim 1, wherein on the OPGW optical cable down wire, a fixture is installed at every preset distance to prevent the OPGW optical cable and the structure from swinging friction. 3. The OPGW optical cable down-conducting device at a substation structure as claimed in claim 2, wherein the fixture comprises a composite pin-type insulator down-conductor clip, and each composite-pin type insulator down-conductor clip is connected to a holder. The ferrule cooperates to fix the OPGW optical cable down conductor on the frame column. 4 . The OPGW optical cable down-conducting device at the substation structure according to claim 1 , wherein an OPGW optical cable sign is arranged at the center of the redundant cable rack, and the OPGW optical cable sign is fixed to the redundant cable rack. 5 . 5 . The OPGW optical cable down-conducting device at the substation structure according to claim 1 , wherein one end of the dedicated ground wire is a parallel trench clamp, and the other end is fixed on a reserved hole of the structure. 6 . 6 . The OPGW optical cable down-conducting device at the substation structure according to claim 1 , wherein the diameter of the redundant cable rack is 1 m, and the center position of the redundant cable rack is 1.8-2 m from the ground. 7 . 7 . The OPGW optical cable down-conducting device at the substation structure according to claim 1 , wherein the base of the splice box is 2.5-3 m above the ground. 8 . 8 . The OPGW optical cable down-conducting device at the substation structure according to claim 4 , wherein the OPGW optical cable sign and the remaining cable frame are fixed by bolts. 9 . 9. The OPGW optical cable down-conducting device at the substation structure according to claim 8, characterized in that, a fixing hole is provided on the redundant cable frame, and the fixing hole is arranged 100mm above the center of the redundant cable frame, and the diameter of the fixing hole is 100 mm. is 12mm.