CN206020766U - A kind of power transmission line column draws lower securing member with OPGW insulation - Google Patents

Abstract

An OPGW insulation lead-down fastener for a power transmission line tower, comprising a card slot horizontal tank, a plurality of insulating support mounting nozzles are arranged on the card slot horizontal tank, each insulating support mounting nozzle is correspondingly installed with an insulating support, and the insulating support is provided with a Equipped with cable fastening mechanism. The utility model provides an OPGW insulation down-lead fastener for a power transmission line tower. By adopting a groove-shaped horizontal tank and a plurality of insulating pillars for integrated installation, it ensures that the OPGW cable in the power transmission line tower is insulated. The insulation distance between cables, cables and towers reduces the cost of engineering construction, reduces the installation time on the job site, facilitates assembly, eliminates the problems of cable detachment and pole discharge and broken strands, and is safe and reliable for long-term use, improving the OPGW of transmission lines The safe operation rate of the cable.

Description

An OPGW insulation downconductor fastener for transmission line towers

technical field

The utility model relates to a fastener for a power transmission line tower, in particular to an OPGW insulation downlead fastener for a power transmission line tower.

Background technique

At present, overhead OPGW optical cables of domestic high-voltage and ultra-high-voltage transmission lines are directly connected to the ground of the line tower body, and the down-conductor cables are installed with metal fixtures, which cannot use induction power. With the development of smart grid, expanding the insulation installation process of OPGW, making full use of OPGW induction power to provide power for transmission line monitoring equipment, and promoting the application of new technologies in all aspects of smart grid to provide conditions, OPGW insulation of transmission lines is a trend.

Contents of the invention

The technical problem to be solved by the utility model is to provide a fastener for the OPGW insulation lead of the transmission line tower, which ensures the insulation distance between the cable and the cable and the cable and the tower body under the OPGW cable insulation lead in the transmission line tower, and reduces the The cost of engineering construction is reduced, the installation time on the job site is reduced, the assembly is convenient, and the problems of cable detachment and rod discharge and broken strands are eliminated. In addition, it can also meet the requirements of extracting inductive electric energy on the OPGW of the transmission line.

An OPGW insulating down-conductor fastener for transmission line towers, including a card slot horizontal tank, a plurality of insulating support mounting nozzles are arranged on the card slot horizontal tank, each insulating support mounting nozzle is correspondingly installed with an insulating support, and the insulating support is installed on the mounting nozzle. Equipped with cable fastening mechanism.

The horizontal tank of the draw-in slot is U-shaped.

A plurality of fastening bolts are arranged on the first mounting surface of the horizontal tank of the card slot, gaskets are installed on the top of the fastening bolts, and the bottom ends are locked by double nuts; the second mounting surface of the horizontal tank of the card slot is provided with Two side-by-side insulating posts mount the nozzle.

The mounting nozzle of the insulating pillar is provided with a threaded hole, and the center of the threaded hole is provided with a threaded column. The lower end of the insulating pillar is correspondingly provided with an external thread and an internal threaded hole. The mounting nozzle of the insulating pillar is connected with the insulating pillar through double-layer threads.

The optical cable fastening mechanism includes a down-conductor cable fastening card, and the down-conductor cable fastening card is locked by a cable clamp fastening bolt.

The utility model relates to an OPGW insulation down-conductor fastener for transmission line towers, which has the following technical effects:

1) Using a U-shaped card slot horizontal tank and multiple insulating supports for integrated installation, without adjusting the installation distance of double down-conductor cables, OPGW dual optical cables can be connected and fastened in parallel to insulated down-conductor cables, reducing engineering construction costs, Improve the efficiency of engineering construction. In addition, by setting insulating pillars, it provides conditions for extracting inductive electric energy on the transmission line OPGW downcomer and overhead cable, provides electric energy for the popularization of on-line monitoring equipment in the smart grid, and creates a new environment for the application of monitoring intelligent equipment on transmission lines and towers. conditions.

2) By setting detachable card slot horizontal tanks and insulating pillars, it is convenient for on-site assembly, transportation, replacement and maintenance, and improves the work efficiency of on-site pole operations. The assembly is simple and convenient for construction.

3) The OPGW insulation down-leading technical scheme that can be adapted to transmission line towers of various voltage levels of 500kV, 750kV, and 1000kV.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the schematic diagram of the utility model.

Fig. 2 is the schematic diagram of the utility model.

Fig. 3 is a schematic diagram of the gasket in the present utility model (the first type).

Fig. 4 is a schematic diagram (the second type) of the gasket in the present invention.

In the figure: card slot horizontal tank 1, insulating support mounting nozzle 2, insulating support 3, fastening bolt 4, gasket 5, double nut 6, threaded hole 7, threaded post 8, downcomer fastening clamp 9, cable clamp Tighten the bolt 10.

detailed description

As shown in Figure 1-2, an OPGW insulation down-conductor fastener for a power transmission line tower includes a card slot horizontal tank 1, and the card slot horizontal tank 1 is provided with two side-by-side insulating pillar installation nozzles 2, each insulation Correspondingly, an insulating pillar 3 is installed on the pillar installation nozzle 2, and an optical cable fastening mechanism is arranged on the insulating pillar 3. Since the device adopts two insulating pillars and two optical cable fastening mechanisms, there is no need to adjust the installation distance of the double downcomer, and the OPGW double optical cable joint insulation downcomer can be fastened in parallel, which reduces the construction cost and improves the efficiency of the project. Engineering construction efficiency. In addition, the use of special pillar insulation technology ensures the insulation distance between the tower and the cable, and eliminates the problem of electric corrosion caused by the discharge of the cable on the tower, which in turn causes the problem of broken strands.

The card slot horizontal tank 1 is U-shaped (the U-shaped structure saves material compared to the S-shaped structure), and a plurality of fastening bolts 4 are arranged on the side of the U-shaped structure, and gaskets 5 are installed on the top of the fastening bolts 4. The bottom end is locked by double nuts 6; two parallel insulating support mounting nozzles 2 are arranged on the bottom surface of the U-shaped structure. Since the length of the horizontal tank of the U-shaped structure can be designed according to the actual needs, multiple insulating pillars can be installed, eliminating the need to repeatedly adjust the installation distance between the cables and the cable and the body on the pole, making the installation process easier. Simpler and more efficient. In addition, the gasket 5 can be designed as a convex structure made of elastic metal sheet or rubber, and the upper part of the convex structure is provided with a plurality of segmented continuous blocks or continuous triangular protrusions. When in contact with the horizontal inch angle steel in the pole tower, the contact surface can be enlarged, the maximum static friction force can be improved, and the card slot horizontal tank can be prevented from sliding and loosening relative to the angle steel.

The mounting nozzle 2 of the insulating pillar is provided with a threaded hole 7, and the center of the threaded hole 7 is provided with a threaded pillar 8. The lower end of the insulating pillar 3 is correspondingly provided with an external thread and an internal thread hole, and the mounting nozzle 2 of the insulating pillar and the insulating pillar 3 pass through Double threaded connection. Since the insulating post installation nozzle 2 is not only kept connected with the insulating post 3, but also needs to provide supporting force for the insulating post, it is necessary to ensure that the connection is tight and not loose. A threaded column 8 is added in the threaded hole 7, thereby forming two sets of threaded locks to increase reliability. Compared with the fixed integrated connection, it increases the flexibility of detachment, facilitates on-site assembly, transportation, replacement and maintenance, improves the work efficiency of on-site pole operations, and is simple to assemble and convenient to construct.

The optical cable fastening mechanism includes a down-conductor cable fastening card 9 , and the down-conductor cable fastening card 9 is locked by a cable clamp fastening bolt 10 . It eliminates the detachment problem of OPGW optical cable caused by loose fastening, and reduces the operation and maintenance cost.

Working principle and process: Since each supporting member of the tower is connected by angle steel profiles, the device can be installed horizontally on the horizontal inch angle steel in the tower. The specific operation process is as follows: first, fasten the angle steel of the horizontal structure with the slot of the U-shaped card slot horizontal tank 1, tighten the bolts so that the angle steel and the card slot horizontal tank 1 are tightly connected and then locked by double nuts; then, the insulation The pillar and the insulating pillar installation nozzle 2 are threaded and locked; finally, put the OPGW downconductor cable into the downconductor cable fastening card 9, and lock it with the cable clamp fastening bolt 10.

Claims (5)

1. a kind of power transmission line column draws lower securing member with OPGW insulation, it is characterised in that：Smooth including draw-in groove horizontal stroke（1）, draw-in groove horizontal stroke is smooth （1）It is provided with multiple insulation columns and nozzle is installed（2）, each insulation column installation nozzle（2）On insulation column is correspondingly installed（3）, Insulation column（3）It is provided with optical cable retention mechanism.

2. a kind of power transmission line column according to claim 1 draws lower securing member with OPGW insulation, it is characterised in that：The card Groove horizontal stroke is smooth（1）For U-shaped.

3. a kind of power transmission line column according to claim 2 draws lower securing member with OPGW insulation, it is characterised in that：Draw-in groove is horizontal Smooth（1）The first mounting surface be provided with multiple fastening bolts（4）, fastening bolt（4）Top is correspondingly provided with pad（5）, bottom By double nut（6）Locking；The draw-in groove horizontal stroke is smooth（1）The second mounting surface be provided with two insulation columns side by side nozzles be installed （2）.

4. a kind of power transmission line column according to claim 1 draws lower securing member with OPGW insulation, it is characterised in that：Described exhausted Nozzle installed by edge pillar（2）It is provided with screwed hole（7）, screwed hole（7）Center is provided with threaded post（8）, the insulation column（3）Lower end External screw thread and internal thread hole is correspondingly provided with, insulation column installs nozzle（2）With insulation column（3）Connected by Double-layer threaded.

5. a kind of power transmission line column according to claim 1 draws lower securing member with OPGW insulation, it is characterised in that：The light Cable retention mechanism includes drawing lower cable fastener（9）, draw lower cable fastener（9）By cable clamping fixing bolt（10）Locking.