High-altitude 220kV double-layer framework multifunctional outgoing line terminal tower

Abstract

The utility model discloses a high altitude 220kV double-layer framework multifunctional outgoing line terminal tower which comprises tower legs, a tower body and wire cross arms, the tower legs are arranged at the bottom of the tower body, the wire cross arms are arranged on the upper portion and the top of the tower body respectively, the tower body comprises a lower tower, a middle tower and an upper tower which are sequentially connected, and the tower legs are arranged at the bottom of the lower tower. The wire inlet face of the middle tower is of a vertical straight face structure, the other three faces of the middle tower are inclined faces, the inclination angle of the inclined face opposite to the straight face is consistent with that of the inclined face of the lower tower, the wire inlet face of the upper tower is of a vertical structure matched with the straight face structure of the middle tower, and wire cross arms are arranged in the middle and on the top of the upper tower respectively. According to the utility model, the tower body is improved, and the inclined surface structure on the wire outlet side of the tower body is enlarged, so that the generated pressure counteracts the tension generated by the wire piece, and compared with a conventional terminal tower, the tower weight increase is smaller, the tensile resistance is strong, the stability is higher, and the aim of effectively improving the safe and stable operation of a line is finally achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power transmission technical field especially relates to a high altitude 220kV double -deck framework multi -functional outgoing line terminal tower. BACKGROUND

[0002] In the high -voltage power transmission process, the terminal tower is usually used to connect high -voltage conductor at the power transmission end, and then the conductor is connected to the power transformation equipment, which only bears the tension of the incoming line side (i.e. the outgoing line end of the terminal tower is stable to connect the power transformation equipment, and no tension is generated to the terminal tower, and the unilateral stress of the terminal tower will lead to uneven stress). Compared with the ordinary electric tower, the two sides of which can bear stress uniformly, it will increase the pressure of the whole terminal tower, and the gravity center position will rise, so that the stability of the whole tower body will be reduced, and if it is used in some areas with complex environmental conditions such as wind, flood or earthquake, there will be great safety hazards.

[0003] Therefore, based on the actual engineering needs, a multi -layer framework line terminal tower with more stable and reliable structure needs to be designed. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of high altitude 220kV double -deck framework multi -functional outgoing line terminal tower.

[0005] The utility model is implemented by the following technical scheme: including tower leg, tower body and conductor cross arm, tower body bottom is provided with tower leg, upper portion and top portion are provided with conductor cross arm respectively, the tower body includes sequentially connected lower tower, middle tower and upper tower, the lower tower bottom is provided with tower leg, the incoming line side of the middle tower is provided with vertical straight face structure, the other three sides are inclined surface, and the inclined surface opposite to the straight face (i.e. outgoing line side) is consistent with the inclined angle of the inclined surface of the lower tower, the upper tower is provided with columnar structure, and the incoming line side of the upper tower is provided with vertical structure matched with the straight face structure of the middle tower, and conductor cross arm is respectively arranged in the middle and top of the upper tower.

[0006] The utility model has the beneficial effects that: by improving the tower body, the incoming line side of the middle tower and the upper tower of the tower body is provided with vertical straight face, and the outgoing line side of the middle tower is provided with inclined surface, and is in the same inclined surface with the tower leg and the lower tower, when incoming line conductor generates tension to the terminal tower, the middle tower, the lower tower and the tower leg will generate tension to the upper tower and the conductor thereon, and the generated pressure will offset the tension generated by the conductor, and the middle tower, the lower tower and the tower leg on the incoming line side will generate a reverse thrust to the tension of the conductor to reduce the tension, and the middle tower, the lower tower and the tower leg simultaneously pull the terminal tower from all directions, so that the restriction effect is stronger, compared with conventional terminal tower, the tower weight increases less, the tensile strength is strong, and the stability is higher, finally the purpose of effectively improving the safe and stable operation of line is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the structure schematic view of the utility model;

[0008] Figure 2 It is the structure schematic view of the left view of the utility model;

[0009] Figure 3 It is the structure schematic view of the right view of the tower leg and the tower body;

[0010] Figure 4 It is the structure schematic view of the overhead view of the middle tower;

[0011] Marked number in the drawing: 1~tower leg 1, 2~lower tower 2, 3~middle tower 3, 4~upper tower 4, 5~wire cross arm 5, 6~sub tower 6, 7~sub wire cross arm 7, 8~ground wire frame 8, 9~support 9. DETAILED DESCRIPTION

[0012] In order to make the person skilled in the art better understand the technical scheme of the utility model, the specific embodiments thereof are described in detail below in conjunction with the drawings.

[0013] As Figures 1-4 Indicated in the high altitude 220kV double-layer framework multifunctional outgoing line terminal tower, including tower leg 1, tower body and wire cross arm 5, the tower body bottom is provided with tower leg 1, and the upper portion and top portion are provided with wire cross arm 5, while ensuring the safe distance and arrangement mode between wires, the transmission performance of line is optimized, the tower body includes lower tower 2, middle tower 3 and upper tower 4 connected in turn, the lower tower 2 bottom is provided with tower leg 1, the incoming line side of the middle tower 3 is provided with vertical straight face structure, and the remaining three sides are inclined, and the inclined surface opposite to the straight face (namely outgoing line side) is consistent with the inclined angle of the inclined surface of the lower tower 2, by making the incoming line side of the middle tower 3 consistent with the inclined angle of the inclined surface of the lower tower 2, the tensile strength of the middle tower 3 is increased, the tensile force of the wire on the tower body is further offset, and the structure stability of the middle tower 3 and the upper tower 4 is effectively guaranteed, and the stress performance of the tower body is improved, the upper tower 4 is provided with columnar structure, and the incoming line side of the upper tower 4 is provided with vertical structure matched with the straight face structure of the middle tower 3, and the middle portion and top portion of the upper tower 4 are provided with wire cross arm 5, and the two wire cross arms 5 constitute compact double-layer framework wire hanging structure.

[0014] The top end surface of the lower tower 2 is matched with the bottom end surface of the middle tower 3, and the top end surface of the middle tower 3 is matched with the bottom end surface of the upper tower 4, so that the three are stably connected.

[0015] The height of the lower tower 2, the middle tower 3 and the upper tower 4 is consistent, or the height of the lower tower 2 is greater than that of the middle tower 3, and the height of the middle tower 3 is greater than that of the upper tower 4.

[0016] The lower tower 2 is a regular quadrangular prism structure, that is, the cross section of the lower tower 2 is a square structure, thereby ensuring the structural stability.

[0017] The lower tower 2 is a regular quadrangular prism structure, that is, the cross section of the lower tower 2 is a square structure, thereby ensuring the structural stability.

[0018] The lower tower 2 is a regular quadrangular prism structure, that is, the cross section of the lower tower 2 is a square structure, thereby ensuring the structural stability.

[0019] The lower tower 2 is a regular quadrangular prism structure, that is, the cross section of the lower tower 2 is a square structure, thereby ensuring the structural stability.

[0020] Further, the longitudinal section of the middle tower 3 is a right trapezoidal structure.

[0021] The wire cross arm 5 at the top of the upper tower 4 is provided with inclined ground wire racks 8 at both ends, and the end of the ground wire rack 8 is connected with the wire cross arm 5 to form a V-shaped structure.

Claims

1. A high-altitude 220kV double-layer frame multifunctional outgoing line terminal tower, comprising a tower leg (1), a tower body and a conductor cross arm (5), the tower body is provided with the tower leg (1) at the bottom, the upper part and the top are respectively provided with the conductor cross arm (5), characterized in that: The tower body comprises a lower tower (2), a middle tower (3) and an upper tower (4) connected in sequence, the lower tower (2) is provided with a tower leg (1) at the bottom, the incoming line side of the middle tower (3) is provided with a vertical straight face structure, the other three sides are inclined surfaces, and the inclined surface opposite to the straight face has the same inclination angle as the inclined surface of the lower tower (2), the upper tower (4) is provided with a columnar structure, and the incoming line side of the upper tower (4) is provided with a vertical structure matched with the straight face structure of the middle tower (3), and the middle and top of the upper tower (4) are provided with conductor cross arms (5).

2. The high-altitude 220 kV double-layer frame multi-functional outgoing line terminal tower according to claim 1, characterized in that: The top end surface of the lower tower (2) is matched with the bottom end surface of the middle tower (3), and the top end surface of the middle tower (3) is matched with the bottom end surface of the upper tower (4).

3. The high-altitude 220 kV double-layer frame multi-functional outgoing line terminal tower according to claim 1, characterized in that: The heights of the lower tower (2), the middle tower (3) and the upper tower (4) are consistent, or the height of the lower tower (2) is greater than that of the middle tower (3), and the height of the middle tower (3) is greater than that of the upper tower (4).

4. The high-altitude 220 kV double-layer frame multi-functional outgoing line terminal tower according to claim 1, characterized in that: The lower tower (2) is a regular quadrangular frustum structure.

5. The high-altitude 220 kV double-layer frame multi-functional outgoing line terminal tower according to claim 1, characterized in that: The outgoing line side of the lower tower (2) is provided with a sub-tower (6) at the lower part, the lower part of the sub-tower (6) is fixedly connected with the lower tower (2), and the top of the sub-tower (6) extends upward to the upper part of the middle tower (3), and the middle and top of the sub-tower (6) are provided with sub-conductor cross arms (7).

6. The high-altitude 220 kV double-layer frame multi-functional outgoing line terminal tower according to claim 1, characterized in that: The top of the lower tower (2) is provided with a support (9) connected with the middle of the sub-tower (6).

7. The high-altitude 220 kV double-layer frame multi-functional outgoing line terminal tower according to claim 1, characterized in that: The cross section of the upper tower (4) is a square structure.

8. The high-altitude 220 kV double-layer frame multi-functional outgoing line terminal tower according to claim 1, characterized in that: The conductor cross arms (5) at the top of the upper tower (4) are respectively provided with ground wire racks (8) inclined upward at the two ends.

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