CN202520040U - Bifurcated pole tower for realizing double-T connection of double circuit power transmission line - Google Patents

Abstract

The utility model discloses a bifurcated pole tower for realizing double-T connection of a double circuit power transmission line. The bifurcated pole tower comprises a pole body, the upper end surface of which is fixedly connected with a ground wire cross arm, wherein the pole body is fixedly connected with at least six T-shaped conductor cross arms, which are respectively spaced from each other with a certain distance, from top to bottom; the conductor cross arms are equally divided into upper and lower circuits; and mounting directions of the conductor cross arms in the same circuit are as same as each other and reverse to the mounting directions of the conductor cross arms in the other circuit. The bifurcated pole tower for realizing the double-T connection of the double circuit power transmission line, disclosed by the utility model, has the advantages of simple structure, convenience for assembling and disassembling as well as good applicability; through the adoption of a proper connecting mode, the double circuit line can enter a station in the form of double interfaces or double-T connection; the construction cost is reduced; and a problem of difficulty in land acquisition of the pole tower under the situation of limited line corridors is solved.

Description

A bifurcated tower for realizing double-T connection of double-circuit transmission lines

technical field

The utility model relates to a pole tower, in particular to a bifurcated pole tower used for double-T connection of a double-circuit transmission line.

Background technique

With the increase of social demand for electricity, the power grid structure is also continuously enhanced and improved. There are more and more ways to connect to the system through disconnected lines and T-connected lines. However, conventional double-circuit terminal towers cannot meet the needs of double-circuit lines In order to realize the double-circuit lines, double-disconnection or double-T access to the substation, it is necessary to build a new iron tower, which will inevitably increase the project cost and tower occupation.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a simple structure and good applicability of a double-circuit power transmission line with double T-connected bifurcated pole towers.

The technical solution adopted by the utility model to solve the problem is:

A bifurcated pole tower for realizing dual-circuit transmission line double-T connection, including a shaft, the upper end of the shaft is fixedly connected with a ground wire cross arm, and the shaft is fixedly connected from top to bottom with at least 6 poles at a certain distance apart. The T-shaped conductor cross-arm, the conductor cross-arm is divided into upper and lower circuits, and the installation direction of the conductor cross-arm of the same circuit is the same and opposite to that of the other circuit.

As a further improvement of the above solution, the wire cross-arm is composed of a longitudinal cross-arm and a transverse cross-arm, the longitudinal cross-arm is vertically bisected and fixedly installed on the shaft, and one end of the transverse cross-arm is vertically and fixedly installed at a distance from the longitudinal cross-arm on the shaft at a certain distance from the lower edge.

As a further improvement of the above solution, the longitudinal cross arm and the transverse cross arm are respectively connected to the shaft by bolts.

As a further improvement of the above solution, the ground wire cross-arm structure is cross-shaped.

Beneficial effects of the utility model: the utility model adopts double-circuit reverse T-shaped wire crossarms at a certain distance to meet the requirements of double-circuit line hanging wires, and utilizes the characteristics of the T-shaped structure of the wire crossarms to connect through corresponding electrical connections. The method realizes the double-detachment port or double-T connection of the double-circuit line, which not only reduces the project cost, but also solves the difficulty of land acquisition for the tower under the condition of tight line corridors. Connection, disassembly and assembly are convenient, and operation and maintenance are more convenient. the

Description of drawings

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

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the structural representation of the utility model T-shaped conductor cross-arm;

Fig. 3 is a schematic diagram of entering the station with double unwinding ports of the utility model;

Fig. 4 is a schematic diagram of the utility model double T connection into the station.

Detailed ways

As shown in Figures 1 and 2, a bifurcated pole tower for realizing double-T connection of double-circuit transmission lines includes a pole body 1, and the upper end surface of the pole body 1 is fixedly connected with a cross-shaped ground wire cross arm 3. The shaft 1 is connected by bolts from top to bottom, and there are 6 T-shaped wire cross arms 2 with a certain distance apart. , the next three layers of cross-arms hang another loop. The installation direction of the wire cross arm of the same circuit is the same and opposite to that of another circuit. In this embodiment, the wire cross arm 2 is composed of a longitudinal cross arm 4 and a horizontal cross arm 5, the longitudinal cross arm 4 is vertically bisected and fixedly installed on the shaft 1, and one end of the horizontal cross arm 5 is vertically fixedly installed at a distance from On the shaft 1 at a certain distance from the lower edge of the longitudinal cross arm 4 .

Referring to Fig. 3, when the upper circuit unwinds and enters the station, taking phase A of the lower cross arm of the circuit as an example, the wires on both sides are first hung on both sides of the horizontal cross arm 6, and then hung from both ends of the longitudinal cross arm 7 respectively. E to the substation. Then use the drainage wire to connect the conductors on the same side of the horizontal arm 6 and the longitudinal arm 7 respectively. In this way, phase A is connected to the substation structure. Other phase B and phase C are connected in the same way as phase A.

Referring to Fig. 3, when the lower circuit unwinds and enters the station, taking phase B of the upper cross arm of the circuit as an example, double hanging points are set at both ends of the longitudinal cross arm 8, and the wires on both sides are first hung to the two ends of the longitudinal cross arm 8, and then Wires E are hung from both ends of the longitudinal cross arm 8 to the substation respectively, and then the drain wires are used to connect the conductors on the same side of the longitudinal cross arm 8 respectively. In this way, phase B is decomposed to the substation structure. Phase A and phase C are connected in the same way as phase B.

Referring to Figure 4, when the upper circuit T is connected to the station, take phase A of the lower cross arm of the circuit as an example, the wires on both sides are first hung on both sides of the horizontal cross arm 6, and then from one end of the longitudinal cross arm 7 (tentatively left end ) to hang wire E to the substation. Install jumper strings on the vertical cross arm 6 and the horizontal cross arm 7 again, and utilize the drain wire to connect the conductors of the horizontal cross arm 6 and the longitudinal cross arm 7 respectively. In this way, phase A is connected to the substation frame by T. Phase B and Phase C are connected in the same way as Phase A.

Referring to Figure 4, when the lower circuit T is connected to the station, take the upper cross arm phase B of the circuit as an example, two ends of the longitudinal cross arm 8 are provided with double hanging points, and the wires on both sides are first hung to the two ends of the longitudinal cross arm 8, and then Hang line E from one end (right end, opposite to the upper circuit) of the longitudinal cross arm 8 to the substation. Then install the jumper string on the horizontal cross arm 9, and use the drain wire to connect the three wires at the two ends of the longitudinal cross arm 8 to realize the B-phase T connection to the substation frame. Phase A and Phase C are connected in the same way as Phase B.

The above is only a preferred embodiment of the utility model, and it does not constitute a limitation to the protection scope of the utility model. As long as the purpose of the utility model is realized by basically the same means, all should belong to the protection scope of the utility model.

Claims (4)

1. A bifurcated pole tower for double-T connection of double-circuit transmission lines, comprising a shaft (1), characterized in that: the upper end surface of the shaft (1) is fixedly connected with a ground wire cross arm (3), the The shaft (1) is fixedly connected with at least 6 T-shaped wire cross arms (2) at a certain distance from top to bottom. The wire cross arms (2) are divided into upper and lower circuits, and the wire cross arms of the same circuit ( 2) The installation direction is the same and opposite to that of the other circuit. 2. A kind of bifurcated pole tower for realizing double-T connection of double-circuit transmission line according to claim 1, characterized in that the conductor cross arm (2) is composed of a longitudinal cross arm (4) and a transverse cross arm (5) , the longitudinal arm (4) is vertically bisected and fixedly installed on the shaft (1), and one end of the transverse arm (5) is vertically fixedly installed on the shaft ( 1) on. 3. A kind of bifurcated pole tower that realizes double-T connection of double-circuit transmission line according to claim 2, is characterized in that described longitudinal cross arm (4) and transverse cross arm (5) adopt respectively with shaft (1) Bolted. 4. A kind of bifurcated pole tower for realizing double-T connection of double-circuit power lines according to claim 1, characterized in that the structure of the ground wire cross arm (3) is cross-shaped.

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