CN204645805U - Double back becomes single time angle steel tower - Google Patents

Abstract

The utility model relates to a double-circuit-changing-single-circuit angle steel tower, which comprises a tower body, a ground wire cross arm is arranged on the top of the tower body, the ground wire cross arm is a double-side cross arm, and a ground wire cross arm is arranged under the ground wire cross arm. There are five groups of wire cross arms, the bottom wire cross arms and the wire cross arms are perpendicular to the tower body, and the five groups of wire cross arms are A group of wire cross arms, B group of wire cross arms, and C group of wire cross arms from top to bottom. , Group D wire cross-arm and E group wire cross-arm, the B group wire cross-arm, C group wire cross-arm and E group wire cross-arm are all parallel to the ground wire cross-arm, the A group wire cross-arm and D group The cross arms are all perpendicular to the ground cross arms. Adopting the double-circuit transformer single-circuit angle steel tower of the utility model can directly carry out π-connection for the transmission lines with triangular arrangement of conductors, which is convenient for construction, saves power outage time, and is low in cost.

Description

Double return to single return angle steel tower

technical field

The utility model relates to the technical field of high-voltage transmission lines, in particular to a double-circuit transformer single-circuit angle steel tower.

Background technique

In the construction of the power grid, sometimes it is necessary to disconnect a single-circuit overhead line and connect it to a new substation respectively to share the power load and optimize the power supply system of the power grid.

For transmission lines with triangular arrangement of wires, when carrying out π connection, the existing scheme is to transform the tower of the original line, change the triangular arrangement to vertical arrangement, and then perform π connection, resulting in long power outage time and high cost. high.

Utility model content

The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, the utility model provides a double-circuit to single-circuit angle steel tower.

The technical solution adopted by the utility model to solve the technical problem is: a double-circuit to single-circuit angle steel tower, including a tower body, the top of the tower body is provided with a ground wire cross arm, and the ground wire cross arm is a double-sided horizontal arm. There are five sets of conductor crossarms below the ground wire crossarm, the bottom line crossarm and the conductor crossarm are perpendicular to the tower body, and the five sets of conductor crossarms are A group of conductor crossarms, B The cross-arm of the group conductors, the conductor cross-arm of group C, the conductor cross-arm of group D and the conductor cross-arm of group E, the conductor cross-arm of group B, the conductor cross-arm of group C and the conductor cross-arm of group E are all parallel to the ground wire cross-arm, Both the cross-arms of the group A conductors and the cross-arms of the D group are perpendicular to the ground wire cross-arms.

The distance between the cross-arm of the group B conductors and the cross-arm of the ground wire is 5 meters, and the distance between the cross-arms of the conductors of the group C, group E and the conductor cross-arm of the group D is 3.5 meters.

The length of the cross-arm of the group C conductors is greater than the length of the cross-arms of the conductors of the group A, the conductors of the group B, the conductors of the D group, the conductors of the E group and the ground conductors, that is, the length of the conductor cross-arms of the group C is the shortest. long.

The beneficial effect of the utility model is that, by adopting the double-circuit-to-single-circuit angle steel tower of the utility model, the transmission lines with triangular conductors can be directly connected by π connection, the construction is convenient, the power outage time is saved, and the cost is low.

Description of drawings

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

Fig. 1 is a schematic diagram of the front structure of the double-circuit to single-circuit angle steel tower of the present invention.

Fig. 2 is a schematic diagram of the side structure of the double-circuit to single-circuit angle steel tower of the present invention.

Fig. 3 is a schematic diagram of the wiring of the transmission line of the double-circuit transformer single-circuit angle steel tower of the present invention.

In the figure 1. Tower body, 2. Ground wire cross arm, 3. Group A wire cross arm, 4. Group B wire cross arm, 5. Group C wire cross arm, 6. D group wire cross arm, 7. E group Conductor cross arm, 100, substation A, 200, substation B, 300, substation C, 10, double-circuit substation single-circuit angle steel tower.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

As shown in Figure 1-3, a double-circuit variable single-circuit angle steel tower 10 of the present utility model includes a tower body 1, and the top of the tower body 1 is provided with a ground wire cross arm 2, and the ground wire cross arm 2 is Double-sided cross-arms, five sets of conductor cross-arms are arranged below the ground wire cross-arm 2, the bottom wire cross-arm and conductor cross-arms are both perpendicular to the tower body 1, and the five sets of conductor cross-arms are group A from top to bottom Conductor crossarm 3, group B conductor crossarm 4, group C conductor crossarm 5, group D conductor crossarm 6 and group E conductor crossarm 7, the group B conductor crossarm 4, group C conductor crossarm 5 and E The cross-arms 7 of the group of wires are all parallel to the cross-arm 2 of the ground wire, and the cross-arms of the group A of the wires 3 and the cross-arm of the group D are all perpendicular to the cross-arm 2 of the ground wire.

The distance between the B group wire cross-arm 4 and the ground wire cross-arm 2 is 5 meters, and the distance between the C group wire cross-arm 5 and the E group wire cross-arm 7 and the D group wire cross-arm 6 is 3.5 meters.

The length of the wire cross arm 5 of the group C is greater than the length of the wire cross arm 3 of the group A, the wire cross arm 4 of the group B, the wire cross arm 6 of the D group, the wire cross arm 7 of the E group and the length of the ground wire cross arm 2, that is, the group C The length of lead crossarm 5 is the longest.

The single-circuit overhead lines from the original substation A 100 to substation B 200 are disconnected and connected to substation C 300 respectively to form two new line passages of substation A and substation B and substation B. Angle steel tower 10 of the present utility model is arranged on the circuit center position of former A and B lines. The three-phase conductors of the single-circuit overhead line are respectively connected to the cross-arm 6 of group D and the cross-arm 3 of group A, and then connected to the cross-arm 4 of group B, the cross-arm 5 of group C and the conductor of group E through jumper connection Crossarm7.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (3)

1. A double-circuit variable single-circuit angle steel tower is characterized in that: it comprises a tower body (1), and the top of the tower body (1) is provided with a ground wire cross arm (2), and the ground wire cross arm (2) It is a double-sided cross arm. There are five sets of wire cross arms below the ground wire cross arm (2). Both the bottom line cross arm and the wire cross arm are perpendicular to the tower body (1). The following are followed by group A wire cross arm (3), B group wire cross arm (4), C group wire cross arm (5), D group wire cross arm (6) and E group wire cross arm (7). Group B wire cross arm (4), C group wire cross arm (5) and E group wire cross arm (7) are all parallel to the ground wire cross arm (2), and the A group wire cross arm (3) and D group The cross arms are all perpendicular to the ground wire cross arms (2). 2. The double-circuit variable single-circuit angle steel tower as claimed in claim 1, characterized in that: the distance between the B group conductor cross arm (4) and the ground wire cross arm (2) is 5 meters, and the C The spacing between the group conductor cross-arm (5) and the E group conductor cross-arm (7) and the D group conductor cross-arm (6) is 3.5 meters. 3. The double-circuit variable single-circuit angle steel tower as claimed in claim 1, characterized in that: the length of the C group of wire cross arms (5) is greater than the A group of wire cross arms (3), the B group of wire cross arms (4 ), the lengths of group D wire crossarm (6), E group wire crossarm (7) and ground wire crossarm (2).