CN211979288U

CN211979288U - Fixed grounding protection device for leading-down cable of OPGW optical cable terminal

Info

Publication number: CN211979288U
Application number: CN202020667484.6U
Authority: CN
Inventors: 余涛
Original assignee: New Energy Technology Co ltd
Current assignee: New Energy Technology Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-11-20
Anticipated expiration: 2030-04-27

Abstract

The utility model provides a OPGW optical cable terminal draws down cable fixed ground protection device, include: the pin type composite insulator comprises a pin type composite insulator main body, a grounding ring and a hoop, wherein the pin type composite insulator main body comprises a core rod, two ends of the core rod are respectively connected with an upper hardware fitting and a lower hardware fitting, the periphery of the core rod is coated with a plurality of umbrella skirts, a fixing device for fixing an OPGW (optical fiber composite overhead ground wire) optical cable is installed at the end part of the upper hardware fitting, the bottom of the upper hardware fitting is connected with a conductive shaft, the conductive shaft is in threaded connection with the grounding ring, and the end. According to the fixed grounding protection device, the grounding ring is arranged at the fixed position of the pin type composite insulator main body, the contact points of the grounding ring and the pin type composite insulator are reduced, the parallel groove wire clamp and the grounding ring are not required to be lost, the fixed position of the grounding ring completely depends on the peripheral condition of a down-leading cable fixed point and the combination condition of the hoop and the pin type composite insulator main body, the installation of the grounding protection device is greatly simplified, the operation is more convenient, and the maintenance work efficiency and the maintenance safety are improved.

Description

Fixed grounding protection device for leading-down cable of OPGW optical cable terminal

Technical Field

The utility model relates to an electric power communication technology field, in particular to OPGW optical cable terminal draws down cable fixed ground protection device.

Background

The OPGW composite cable is also called an overhead ground wire composite optical cable. After the OPGW optical cable enters each stage of transformer substation from an outside line iron tower, the OPGW optical cable is led down along a gantry framework (also called a gantry framework, a gantry rod and the like) point by point and insulated and fixed to complete terminal connection. According to the specification requirement of Q/GDW 758-. The steel belt and rubber wire clamp combined fastener has many defects, such as aging of insulating rubber, small insulating discharge distance, insufficient steel belt strength and the like, which are caused when the OPGW optical cable is pulled down and loosened. In order to solve the problems, the cable fixing mode of the steel belt and rubber wire clamp combined fastener is gradually replaced by a flat steel hoop and needle type composite insulator combined fastener with certain advantages, so that the reliability of leading-down insulation fixing of the OPGW optical cable is greatly improved. The induced current and voltage of the grounding loop on the OPGW optical cable under the high-voltage environment of the transformer substation are not small hidden dangers to the personal safety of maintenance personnel. Even if the line is powered off, the induced current remained on the OPGW optical cable cannot be ignored, and the induced current remained on the OPGW optical cable must be discharged before the maintenance operation so as to avoid personal safety accidents caused by electric shock. This is typically done by installing a parallel groove clamp and ground ring protector on the drop cable proximate the insulation combining fastener prior to entering the remaining cable rack. And connecting the grounding ring, the grounding wire and the grounding pile at the bottom of the framework by using a high-voltage grounding rod to discharge the residual induced current on the optical cable. The OPGW optical cable lead-down is basically vertical to the ground, and the locking direction of the high-voltage grounding rod grounding chuck is consistent with the rod shaft direction, so that the high-voltage grounding rod grounding chuck is not easy to operate and is not reliable. Although the parallel groove clamp and the grounding ring can be fixed on the OPGW optical cable near the lowest insulation combined fastener of the framework during the insulation fixing construction of the OPGW optical cable, even if the grounding part of the grounding ring hanging clamp is in an easy-to-operate orientation, the grounding protection operation is inconvenient due to factors such as no installation caused by the configuration loss of the parallel groove clamp and the grounding ring, insufficient rigidity caused by the proximity of the fixed position, poor contact caused by the matching lack of multiple contact points and grooves, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a fixed ground protection device of cable is drawn down at OPGW optical cable terminal need let out the induced current on the OPGW optical cable when operating to the maintenance ground connection to the electric shock causes the solution that personal safety accident so proposed. The problems that in the prior art, the ground protection operation is inconvenient due to factors such as no installation caused by the configuration loss of a parallel groove clamp and a ground ring, insufficient rigidity caused by the distance between fixed positions, poor contact caused by the lack of matching of multiple contact points and grooves and the like are solved.

In order to solve the technical problem, the utility model provides a OPGW optical cable terminal draws down cable fixed ground protection device, include: pin type composite insulator main part, ground ring and staple bolt, pin type composite insulator main part includes the plug, and the both ends of plug are connected with gold utensil and lower gold utensil respectively, and the cladding of plug periphery circle has a plurality of full skirts, and the fixing device who is used for fixed OPGW optical cable is installed to the tip of going up the gold utensil, and the bottom of going up the gold utensil is connected with electrically conductive axle, electrically conductive axle and ground ring threaded connection, the tip and the staple bolt of lower gold utensil can be dismantled and be connected.

On the basis of the technical scheme, preferably, the axis direction of the conductive shaft is perpendicular to the axis direction of the upper hardware fitting, the grounding ring comprises a conductive ring, a connecting rod is arranged on the conductive ring, an internal thread is arranged at the bottom end of the conductive shaft, an external thread connected with the internal thread is arranged at the upper end of the connecting rod, and an adjusting nut used for enabling the conductive shaft and the connecting rod to be axially fixed is connected to the external thread in a threaded manner.

On the basis of the technical scheme, preferably, the fixing device comprises a cable fixing seat and a cable fixing cover, the cable fixing seat is fixedly connected with the upper hardware fitting, the cable fixing cover is detachably connected with the cable fixing seat, a wire groove used for coating the OPGW optical cable is arranged on the surface where the cable fixing seat is connected with the cable fixing cover, and the axis direction of the wire groove is parallel to the axis direction of the conductive shaft.

On the basis of the technical scheme, preferably, the end part of the lower hardware fitting is further provided with a fastening nut for locking the hoop and the pin type composite insulator main body.

On the basis of the technical scheme, preferably, the axis direction of the hoop is parallel to the axis direction of the wire casing.

On the basis of the technical scheme, preferably, the hoop is provided with an adjusting bolt for adjusting the tightness of the hoop.

On the basis of the technical scheme, preferably, the upper hardware fitting, the lower hardware fitting, the cable fixing seat and the cable fixing cover are all made of aluminum alloy materials, the core rod is an epoxy glass fiber drawing rod, and the umbrella skirt is a high-temperature vulcanized silicone rubber part.

The utility model discloses following beneficial effect has for prior art:

the utility model discloses a OPGW optical cable terminal draws down cable fixed ground protection device, through installing the earthing ring on the fixed position of pin type composite insulator main part, the contact point of earthing ring and pin type composite insulator has been reduced, also need not anxious parallel groove fastener and earthing ring loss, the fixed position of earthing ring depends on completely drawing down the peripheral condition of cable fixed point and the staple bolt and the compound insulator main part combination condition of pin type, the installation of ground protection device has been simplified greatly, it is also more convenient to operate, maintenance work efficiency and security have been improved. The fixed grounding protection device has the advantages that the integrated insulation fixed design structure and the grounding ring fixed position are assembled and positioned along with the actual situation, and the grounding protection function during maintenance is achieved through more complete and complete configuration. The operation is more convenient, and the maintenance working efficiency and the safe reliability are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a fixed ground protection device disclosed in the present invention;

fig. 2 is a schematic view of the main structure of the pin-type composite insulator disclosed by the present invention;

fig. 3 is a schematic view of an assembly structure of the pin-type composite insulator main body and the grounding ring disclosed by the present invention;

fig. 4 is an effect diagram of the field installation of the fixed ground protection device disclosed in the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

As shown in fig. 1, combine fig. 2, the embodiment of the utility model discloses a OPGW optical cable terminal draws down cable fixed ground protection device, include: the pin type composite insulator comprises a pin type composite insulator main body 1, a grounding ring 2 and a hoop 3.

The pin type composite insulator main body 1 comprises a core rod 11, two ends of the core rod 11 are respectively connected with an upper hardware fitting 12 and a lower hardware fitting 13, and the periphery of the core rod 11 is coated with a plurality of umbrella skirts 14. Specifically, the upper jig 12 and the lower jig 13 are members for transmitting mechanical load in the pin composite insulator main body 1, and therefore require high mechanical strength, and therefore, in the present embodiment, an aluminum alloy material is preferable. The core rod 11 is a mechanical load bearing part in the pin type composite insulator main body 1 and is also a main part of internal insulation, preferably, the core rod 11 is an epoxy glass fiber drawing rod, and the strength of the epoxy insulation core rod 11 can meet the requirement of rated bending failure load. The umbrella skirt 14 is an external insulation part in the needle type composite insulator main body 1, preferably a high-temperature vulcanized silicone rubber part, and the structure of the silicone rubber composite insulation umbrella skirt 14 meets the requirements of 10kv minimum arc distance and minimum nominal creepage distance.

The end part of the upper fitting 12 is provided with a fixing device 16 for fixing the OPGW optical cable, the bottom of the upper fitting 12 is connected with a conductive shaft 15, the conductive shaft 15 is in threaded connection with the grounding ring 2, and the end part of the lower fitting 13 is detachably connected with the hoop 3.

Adopt above-mentioned technical scheme, connect grounding ring 2 soon on pin type composite insulator main part 1 to fasten staple bolt 3 and pin type composite insulator main part 1 according to predetermined position, make the three combination constitute the utility model discloses a fixed ground protection device. When the OPGW optical cable entering the transformer substation is led down and fixed point by point along the gantry frame rod 100 by using the insulation combined fastener and the like, the insulation combined fastener above the reserved optical cable coiled residual cable frame replaces the fixation and grounding protection device of the embodiment. Specifically, the staple bolt 3 in the fixed grounding protection device is firmly fixed to the gantry frame rod 100 by winding the residual cable for a proper distance above the cable fork of the residual cable frame, the drawn-down OPGW optical cable 200 is fixed through the fixing device 16, and finally, the operator holds the high-voltage grounding rod to mount one end of the grounding wire on the grounding ring 2, and the other end of the grounding rod implements grounding operation.

The utility model discloses a OPGW optical cable terminal draws down cable fixed ground protection device, through installing ground ring 2 on the fixed position of pin type composite insulator main part 1, the contact point of ground ring 2 with pin type composite insulator has been reduced, also need not anxious parallel groove clamp and the loss of ground ring 2, the position that ground ring 2 is fixed depends on completely drawing down cable fixed point peripheral circumstances and staple bolt 3 and the 1 combination condition of pin type composite insulator main part, the installation of ground protection device has been simplified greatly, it is also more convenient to operate, maintenance work efficiency and security have been improved.

Referring to fig. 3 and 4, it should be noted that after the hoop 3 is fixed to the gantry frame, the pin-type composite insulator main body 1 is perpendicular to the gantry frame bar 100, in this embodiment, the axial direction of the conductive shaft 15 is perpendicular to the axial direction of the upper hardware fitting 12, so that the conductive shaft 15 and the gantry frame can be kept parallel, that is, the conductive shaft 15 is perpendicular to the ground, and thus the grounding ring 2 is perpendicular to the ground, and the grounding operation is facilitated. The grounding ring 2 includes a conductive ring 21, a connecting rod 22 is disposed on the conductive ring 21, an internal thread (not shown in the figure) is disposed at the bottom end of the conductive shaft 15, an external thread (not shown in the figure) connected with the internal thread is disposed at the upper end of the connecting rod 22, and an adjusting nut 23 for axially fixing the conductive shaft 15 and the connecting rod 22 is threadedly connected to the external thread. By adopting the technical scheme, when the grounding insulator is installed, the upper end of the connecting rod 22 is screwed into the internal thread of the conductive shaft 15 through the external thread, the azimuth angle between the grounding ring 2 and the pin-type composite insulator main body 1 is adjusted, and then the adjusting nut 23 is screwed upwards, so that the bottom end of the adjusting nut 23 is abutted against the outer end face of the conductive shaft 15, and the conductive shaft 15 and the connecting rod 22 are fixed in the axial direction. When the grounding device is applied to an actual field, the position of the grounding ring 2 is adjusted in advance, the phenomenon that the discharging distance of the grounding device is too close to that of other peripheral charged bodies during operation is avoided, and the position which is obstructed by a high-voltage grounding rod held by ground personnel is avoided for fixing, so that the personnel can conveniently implement grounding operation. Whether the position of the grounding ring 2 meets the requirements of safety and convenient operation or not is checked again by standing on the ground, and even if the fixed position of the grounding ring 2 is not proper, the position can be adjusted again through the adjusting nut 23, so that the proper position is reached.

In this embodiment, the fixing device 16 includes a cable fixing base 161 and a cable fixing cover 162, the cable fixing base 161 is fixedly connected to the upper hardware 12, the cable fixing cover 162 is detachably connected to the cable fixing base 161, a cable slot 163 for covering the OPGW optical cable 200 is disposed on a surface where the cable fixing base 161 and the cable fixing cover 162 are connected, and an axial direction of the cable slot 163 is parallel to an axial direction of the guide shaft. Specifically, cable fixing seat 161 and cable fixing cover 162 are both made of conductive materials, preferably aluminum alloy materials, and cable fixing cover 162 is combined with cable fixing seat 161 and connected through bolts. When the optical cable is drawn down and fixed, the cable fixing cover 162 is firstly detached from the cable fixing seat 161, the conductive paste is smeared on the cable fixing seat 161 and the cable slot 163 of the cable fixing cover 162, then the optical cable is fastened in the cable slot 163 through the bolt, the axial direction of the cable slot 163 is parallel to the axial direction of the conductive shaft 15, and the optical cable is conveniently drawn down and fixed.

The end of the lower fitting 13 is further provided with a fastening nut 17 for locking the hoop 3 and the pin composite insulator main body 1. Through setting up fastening nut 17 for locking when staple bolt 3 and pin composite insulator main part 1 are installed suitable position, also convenient maintenance is dismantled simultaneously.

Specifically, the axial direction of the hoop 3 is parallel to the axial direction of the linear groove 163. By adopting the structure, the OPGW optical cable 200 can be led down from the gantry frame rod 100 smoothly.

The hoop 3 is provided with an adjusting bolt 31 for adjusting the tightness of the hoop 3. In this embodiment, the hoop 3 is made of galvanized flat steel, which prevents natural corrosion, and is conveniently fixed to the gantry frame rod 100. The anchor ear 3 can be fixed at different positions of the gantry frame rod 100 by the adjusting bolt 31.

In conclusion, the fixed grounding protection device for the down-lead cable of the OPGW optical cable terminal integrates insulation fixing and grounding protection of the down-lead OPGW optical cable, reduces grounding switching components, and avoids missing of component installation. The integral structure is integrally and conveniently adjusted with the grounding ring 2, so that the reliability and safety of the optical cable grounding protection are improved. Is worthy of market promotion.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a fixed ground protection device of OPGW optical cable terminal downlead which characterized in that includes: pin type composite insulator main part (1), ground ring (2) and staple bolt (3), pin type composite insulator main part (1) includes plug (11), and the both ends of plug (11) are connected with gold utensil (12) and lower gold utensil (13) respectively, and the cladding of plug (11) periphery circle has a plurality of full skirts (14), and fixing device (16) that are used for fixed OPGW optical cable are installed to the tip of going up gold utensil (12), and the bottom of going up gold utensil (12) is connected with electrically conductive axle (15), electrically conductive axle (15) and ground ring (2) threaded connection, the tip and staple bolt (3) of lower gold utensil (13) can be dismantled and be connected.

2. The OPGW optical cable termination drop cable fixed ground protection device of claim 1, wherein: the axis direction of electrically conductive axle (15) is mutually perpendicular with the axis direction of last gold utensil (12), and grounding ring (2) are provided with connecting rod (22) including a conducting ring (21) on conducting ring (21), the bottom of electrically conductive axle (15) is provided with the internal thread, and the upper end of connecting rod (22) is provided with the external screw thread that is connected with the internal thread, and threaded connection has adjusting nut (23) that is used for making electrically conductive axle (15) carry out axial fixity with connecting rod (22) on the external screw thread.

3. The OPGW optical cable termination drop cable fixed ground protection device of claim 2, wherein: the fixing device (16) comprises a cable fixing seat (161) and a cable fixing cover (162), the cable fixing seat (161) is fixedly connected with the upper hardware fitting (12), the cable fixing cover (162) is detachably connected with the cable fixing seat (161), a wire slot (163) used for coating an OPGW (optical fiber composite overhead ground wire) optical cable is arranged on the surface where the cable fixing seat (161) is connected with the cable fixing cover (162), and the axis direction of the wire slot (163) is parallel to the axis direction of the conductive shaft (15).

4. The OPGW optical cable termination drop cable fixed ground protection device of claim 3, wherein: and the end part of the lower hardware fitting (13) is also provided with a fastening nut (17) for locking the hoop (3) and the pin type composite insulator main body (1).

5. The OPGW optical cable termination drop cable fixed ground protection device of claim 4, wherein: the axial direction of the hoop (3) is parallel to the axial direction of the wire groove (163).

6. The OPGW optical cable terminal drop cable fixed ground protection device of claim 1, wherein: and an adjusting bolt (31) used for adjusting the tightness of the hoop (3) is arranged on the hoop (3).

7. The OPGW optical cable termination drop cable fixed ground protection device of claim 3, wherein: the upper hardware fitting (12), the lower hardware fitting (13), the cable fixing base (161) and the cable fixing cover (162) are all made of aluminum alloy materials, the core rod (11) is an epoxy glass fiber drawing rod, and the umbrella skirt (14) is a high-temperature vulcanized silicone rubber part.