Wine cup type overhanging tower with negative protection angle

Abstract

The utility model discloses a wine cup type overhanging tower with a negative protection angle, which comprises a cross arm structure arranged on a tower body, and is characterized in that the cross arm structure comprises a middle-phase lead cross arm and common base materials positioned at two ends of the middle-phase lead cross arm, and the common base materials are provided with side-phase lead cross arms and a ground wire bracket; wherein the common base material obliquely extends in the direction away from the tower body and the middle-phase wire cross arm, the side-phase wire cross arm extends in the direction away from the middle-phase wire cross arm in the horizontal direction, the ground wire support extends in the extending direction of the common base material, and the ground wire support extends till the end of the ground wire support exceeds the end of the middle-phase wire cross arm in the horizontal direction. According to the utility model, the side-phase lead cross arm and the ground wire bracket are connected by utilizing the rising public base material, so that the negative protection angle is formed and the air gap is ensured to meet the requirement, the whole wind area is smaller, the whole height of the wine glass overhanging tower is reduced, and the weight is lighter and the economical efficiency is better under the same expiration height.

Description

Technical Field

[0001] This utility model belongs to the technical field of power transmission line equipment, and in particular relates to a wine glass-shaped suspension tower with a negative protection angle. Background Technology

[0002] Currently, the most commonly used tower type for single-circuit suspension towers of transmission lines is the goblet-shaped tower, with conductors arranged horizontally. In conventional areas, the protection angle between the ground wire and the conductor is positive protection.

[0003] However, with economic development and increased electricity demand, the construction of transmission lines is increasing, and the construction area is constantly extending to high-altitude areas in the southwest, such as Tibet. This places higher demands on the lightning protection performance of the towers, and the traditional positive protection angle goblet-shaped towers are not suitable for areas with high lightning strike risk.

[0004] In areas with a high risk of lightning strikes, a negative protection angle glass tower is required. In the current conventional structural design, the requirement for a negative protection angle is achieved by increasing the horizontal length of the ground wire support. This means that the ground wire support and the main material of the conductor crossarm extend from the end of the crossarm transition section. However, this results in a larger overall wind-receiving area and a higher tower weight for the negative protection angle glass tower. Although this improves the lightning protection performance, it is less economical. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the prior art by providing a wine glass-shaped suspension tower with a negative protection angle. It uses an upward-sloping common base material to connect the phase conductor crossarm and the ground wire support. While forming a negative protection angle and ensuring that the air gap meets the requirements, it also makes the overall wind-receiving area smaller and reduces the overall height of the wine glass suspension tower. Compared with the traditional wine glass tower, it is lighter and more economical at the same height.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A wine glass-shaped suspension tower with a negative protection angle includes a crossarm structure installed on the tower body. The crossarm structure includes a middle phase conductor crossarm and a common base material located at both ends of the middle phase conductor crossarm. The common base material is provided with a side phase conductor crossarm and a ground wire support.

[0008] The common substrate extends at an angle away from the tower body and the middle phase conductor crossarm, the side phase conductor crossarm extends horizontally away from the middle phase conductor crossarm, the ground wire bracket extends along the extension direction of the common substrate, and the ground wire bracket extends to the point where its end extends beyond the end of the middle phase conductor crossarm in the horizontal direction.

[0009] In this embodiment, an upward-facing common substrate is used to connect both the phase conductor crossarm and the ground wire bracket. This allows the ground wire bracket to extend a considerable distance beyond the phase conductor crossarm in the horizontal direction to form a negative protection angle, thereby effectively reducing the overall height and the overall wind-receiving area.

[0010] In one embodiment, the spacing between the two sides of the common substrate gradually decreases along its extension direction;

[0011] In this embodiment, the width of the common substrate gradually shrinks along its extension direction, further reducing the overall wind-receiving area.

[0012] In one embodiment, the crossarm structure further includes crossarm transition sections disposed at both ends of the middle phase conductor crossarm, and the common base material is connected to the crossarm transition sections.

[0013] In one embodiment, the crossarm transition section is connected to the tower body via a curved arm structure, the curved arm structure including an upper curved arm connected to the crossarm transition section and a lower curved arm connected to the tower body, the upper curved arm and the lower curved arm being connected.

[0014] In one embodiment, the tower body is mounted on the tower feet.

[0015] In one embodiment, both the side phase conductor crossarm and the middle phase conductor crossarm are connected to insulator strings.

[0016] In one embodiment, the middle phase conductor crossarm has an arched structure.

[0017] In one embodiment, the system further includes a connecting plate disposed at the end of the insulator string, and the connecting plate is also provided with a suspension clamp.

[0018] The beneficial effects of this utility model are as follows:

[0019] By using an upward-facing common base material to connect the phase conductor crossarm and ground wire support, a negative protection angle is formed and the air gap is ensured to meet the requirements. At the same time, the overall wind-receiving area is reduced, and the overall height of the wine glass suspension tower is reduced. Compared with the traditional wine glass tower, it is lighter and more economical at the same height. Attached Figure Description

[0020] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0021] in:

[0022] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0023] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0024] Figure label:

[0025] 1-Middle phase conductor crossarm, 2-Common base material, 3-Side phase conductor crossarm, 4-Ground wire bracket, 5-Crossarm transition section, 6-Tower body, 7-Upper curved arm, 8-Lower curved arm, 9-Tower foot, 10-Insulator string, 11-Connecting plate, 12-Suspension clamp. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] This invention provides a wine glass-shaped suspended tower with a negative protection angle, such as... Figure 1 As shown, the crossarm structure installed on the tower body 6 is characterized in that the crossarm structure includes a middle phase conductor crossarm 1 and a common base material 2 located at both ends of the middle phase conductor crossarm 1, and a side phase conductor crossarm 3 and a ground wire bracket 4 are provided on the common base material 2.

[0028] Among them, the common base material 2 extends inclinedly away from the tower body 6 and the middle phase conductor crossarm 1, the side phase conductor crossarm 3 extends horizontally away from the middle phase conductor crossarm 1, and the ground wire bracket 4 extends along the extension direction of the common base material 2, and the ground wire bracket 4 extends to the end of its end in the horizontal direction beyond the end of the middle phase conductor crossarm 1.

[0029] It should be noted that conventional negative protection angle glass towers, in order to meet the negative protection angle requirements, typically increase the length of the ground wire support 4 so that it exceeds the crossarm 3 of the phase conductor in the horizontal direction, resulting in a higher tower weight. Simultaneously, the ground wire support 4 and the phase conductor crossarm 3 extend from the ends of the crossarm transition section 5, resulting in a larger overall wind-receiving area. However, in this embodiment, as... Figure 1 As shown, the upward-facing common base material 2 is used as the foundation for the side phase conductor crossarm 3 and the ground wire support 4, so that when the ground wire support 4 exceeds the side phase conductor crossarm 3 in the horizontal direction to form a negative protection angle, it does not need to extend a long distance, thus achieving a smaller overall wind-receiving area and reducing the overall height of the wine glass suspension tower. Compared with the traditional wine glass tower, it is lighter and more economical at the same height.

[0030] In one embodiment, such as Figure 1 As shown, the distance between the two sides of the common substrate 2 gradually decreases with its extension direction, that is, the width of the common substrate 2 gradually shrinks with its extension direction, further reducing the overall wind-receiving area.

[0031] Furthermore, such as Figure 1As shown, the crossarm structure also includes a crossarm transition section 5 set at both ends of the crossarm 1 of the middle phase conductor. The common base material 2 is connected to the crossarm transition section 5. The crossarm transition section 5 is connected to the tower body 6 through a curved arm structure. The curved arm structure includes an upper curved arm 7 connected to the crossarm transition section 5 and a lower curved arm 8 connected to the tower body 6. The upper curved arm 7 and the lower curved arm 8 are connected.

[0032] In one embodiment, the goblet-shaped suspension tower also includes tower feet 9 set on the ground, tower body 6 is installed on tower feet 9, and insulator strings 10 are connected to both the side phase conductor crossarm 3 and the middle phase conductor crossarm 1, with the middle phase conductor crossarm 1 having an arched structure.

[0033] Furthermore, such as Figure 1 As shown, it also includes a connecting plate 11 disposed at the end of the insulator string 10, and a suspension clamp 12 disposed on the connecting plate 11 to suspend the conductor.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A negative cornered wineglass-shaped suspension tower comprising a crossarm structure mounted on a tower body, characterized in that, The cross arm structure comprises a middle-phase conductor cross arm and a common base material arranged at both ends of the middle-phase conductor cross arm, and the common base material is provided with an edge-phase conductor cross arm and a ground wire support; The common base material extends in a direction away from the tower body and the middle-phase conductor cross arm, the edge-phase conductor cross arm extends in a horizontal direction away from the middle-phase conductor cross arm, the ground wire support extends along the extension direction of the common base material, and the end of the ground wire support extends beyond the end of the middle-phase conductor cross arm in the horizontal direction.

2. A wine glass shaped suspended tower of negative protection angle according to claim 1, characterized in that, The distance between the two sides of the common base material gradually decreases along the extension direction.

3. A wine glass shaped suspended tower of negative draft angle according to claim 1, characterized in that, The cross arm structure further comprises a cross arm transition section arranged at both ends of the middle-phase conductor cross arm, and the common base material is connected with the cross arm transition section.

4. A wine glass shaped suspended tower of negative protection angle according to claim 3, characterized in that, The cross arm transition section is connected with the tower body through a curved arm structure, the curved arm structure comprises an upper curved arm connected with the cross arm transition section and a lower curved arm connected with the tower body, and the upper curved arm is connected with the lower curved arm.

5. A wineglass-shaped suspended tower of negative overhang angle according to claim 1, characterized in that, A tower foot arranged on the ground is further included, and the tower body is mounted on the tower foot.

6. A wineglass-shaped suspended tower of negative draft angle according to claim 1, characterized in that, The edge-phase conductor cross arm and the middle-phase conductor cross arm are both connected with an insulator string.

7. A wine glass shaped suspended tower of negative draft angle according to claim 1, characterized in that, The middle-phase conductor cross arm has an arch-shaped structure.

8. A wine glass shaped suspended tower of negative protection angle according to claim 6, characterized in that, A connecting plate arranged at the end of the insulator string is further included, and the connecting plate is further provided with a suspension wire clamp.

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