Anti-galloping device for ultrahigh-voltage power transmission line

Abstract

The utility model discloses an anti-galloping device for an extra-high voltage power transmission line, which comprises a spacing rod with a regular hexagonal structure, damping frame plates are respectively arranged at the hexagonal positions of the spacing rod, and damping joint rubber pads are arranged in the damping frame plates. The beneficial effects are that through arranging the damping frame plate and the damping joint rubber pad, in an anti-galloping process of a power transmission conductor, through arranging the damping joint rubber pad with a butterfly-shaped structure at the joint of the wire clamp and the damping frame plate, the spacer obtains a large torsion motion margin; according to the spacer, a boss limiting hard connection structure of a traditional spacer is improved into a rubber pad limiting soft connection structure, the elastic buffering and damping limiting effects of a connection mode are achieved, rigid contact between the tail of the wire clamp and the damping frame plate under the effect of large torsional moment is avoided, the torsional load resistance of the spacer is improved, the anti-galloping effect is good, and the use performance is high.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-galloping devices for ultra-high voltage transmission lines, specifically to an anti-galloping device for ultra-high voltage transmission lines. Background Technology

[0002] In recent years, due to the rapid development of power grid construction and the frequent occurrence of extreme weather conditions, the frequency and intensity of overhead transmission line galloping accidents in my country have increased significantly. Especially after 2000, serious galloping accidents have occurred almost every year. Moreover, the scope of conductor galloping across the country is also expanding, with many areas that had never experienced galloping accidents before experiencing large-scale conductor galloping in recent years.

[0003] Existing anti-galloping devices for ultra-high voltage transmission lines use spacers to fix the lines and damping joints at the connection between the clamps and the frame to provide damping and withstand instantaneous centripetal forces and long-term vibration fatigue. Traditional spacers use the damping effect of the joint rubber pads to allow the clamps to rotate a certain angle tangentially under the axial torsional force of the conductor. Most spacers also have bosses or waist holes on the frame for limiting the movement. The main reason for wear at the spacer connection points caused by galloping is that the spacer clamps may experience large-angle torsional displacement under torque. When the torsion angle is greater than the designed limiting angle, the tail of the clamp will severely wear the limiting boss, causing the limiting structure to fail and resulting in poor performance. Therefore, there is an urgent need for an anti-galloping device for ultra-high voltage transmission lines to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to provide an anti-galloping device for ultra-high voltage transmission lines that has high performance, good anti-galloping effect, and high resistance to torsional load, in light of the current state of the technology.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: This utility model proposes an anti-galloping device for ultra-high voltage transmission lines, including a spacer bar with a regular hexagonal structure. Damping frame plates are installed at the hexagonal corners of the spacer bar. Damping joint rubber pads are installed inside the damping frame plates. Two sets of limiting cavities are symmetrically opened on the damping joint rubber pads. Two sets of limiting blocks are symmetrically arranged on the inner wall of the damping frame plates. A connecting frame is provided at the upper end of the damping joint rubber pads. A wire clamp is fixed at one end of the connecting frame.

[0008] Furthermore, the damping frame plate is welded to the hexagonal corner of the spacer bar, and the damping joint rubber pad is fixed inside the damping frame plate. The damping joint rubber pad has a butterfly-shaped structure.

[0009] By adopting the above technical solution, the spacer bar obtains a larger torsional movement margin by setting a butterfly-shaped damping joint rubber pad at the connection between the clamp and the damping frame plate. The traditional boss-limited hard connection structure of the spacer bar is improved into a rubber pad-limited soft connection structure, realizing the elastic buffering and damping limiting effect of the connection form. This avoids the rigid contact between the tail of the clamp and the damping frame plate under the action of a large torsional torque, and improves the spacer bar's resistance to torsional loads.

[0010] Furthermore, the limiting cavity is formed on the damping joint rubber pad, and the limiting block is formed on the inner wall of the damping frame plate.

[0011] By adopting the above technical solution, the limiting block and the limiting cavity can be combined to initially limit the damping joint rubber pad.

[0012] Furthermore, the connecting frame is fixed to the damping joint rubber pad, and the wire clamp is welded to one end of the connecting frame.

[0013] By adopting the above technical solution, the wire clamp can separate and fix the electrical conductor.

[0014] Furthermore, a protective pad is adhered to the inner wall of the clamp, and the protective pad is made of rubber and has a thickness of 12mm.

[0015] By adopting the above technical solution, the protective pad can protect the power transmission line.

[0016] Furthermore, one end of the wire clamp has an open structure, and the wire clamp is made of cast aluminum alloy.

[0017] By adopting the above technical solution, it is convenient to place the power transmission line inside the clamp.

[0018] Furthermore, two sets of locking plates are symmetrically reserved at one end of the clamp, and locking holes are reserved on the locking plates.

[0019] By adopting the above technical solution, the electrical conductor can be fixed in the clamp by passing the bolt through the locking hole on the locking plate.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] To address the issue of existing anti-galloping devices for ultra-high voltage (UHV) transmission lines, these devices rely on spacers to secure the lines and incorporate damping joints at the connection between the clamps and the frame. These spacers bear both instantaneous centripetal forces and long-term vibration fatigue. Traditional spacers use rubber pads at the joints to allow the clamps to rotate tangentially under conductor axial torsional forces, and often include bosses or recessed holes on the frame for limiting movement. However, galloping causes wear at the spacer connection points primarily because the spacer clamps may experience large-angle torsional displacement under torque. When the torsional angle exceeds the designed limiting angle, the clamps... The tail end of the spacer experiences severe wear on the limiting boss, causing the limiting structure to fail and resulting in poor performance. This invention addresses this issue by incorporating a damping frame plate and a damping joint rubber pad. During the anti-galloping process of power transmission lines, the butterfly-shaped damping joint rubber pad at the connection between the line clamp and the damping frame plate allows the spacer to achieve greater torsional mobility. This improves the traditional rigid connection structure of the spacer's boss limiting to a flexible connection structure with a rubber pad limiting, achieving elastic buffering and damping limiting effects in the connection. It avoids rigid contact between the tail end of the line clamp and the damping frame plate under large torsional torque, improving the spacer's resistance to torsional loads, resulting in better anti-galloping performance and higher usability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an anti-galloping device for ultra-high voltage transmission lines according to this utility model;

[0024] Figure 2 This is a schematic diagram of the damping frame plate and damping joint rubber pad in the anti-galloping device for ultra-high voltage transmission lines described in this utility model.

[0025] Figure 3 This is an exploded schematic diagram of the damping frame plate and damping joint rubber pad in the anti-galling device for ultra-high voltage transmission lines described in this utility model.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Spacer bar; 2. Damping frame plate; 3. Connecting frame; 4. Wire clamp; 5. Locking plate; 6. Protective pad; 7. Limiting block; 8. Damping joint rubber pad; 9. Limiting cavity. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] like Figures 1-3As shown in this embodiment, an anti-galloping device for ultra-high voltage transmission lines includes a hexagonal spacer 1 with damping frame plates 2 installed at each of the hexagonal corners. Damping joint rubber pads 8 are installed inside the damping frame plates 2. By using a butterfly-shaped damping joint rubber pad 8 at the connection between the line clamp 4 and the damping frame plate 2, the spacer 1 gains a large torsional range of motion. This improves the traditional boss-limited hard connection structure of the spacer 1 to a rubber pad-limited soft connection structure, achieving elastic buffering and resistance in the connection form. The damping limit function prevents the tail of the clamp 4 from rigidly contacting the damping frame plate 2 under large torsional torque, thus improving the torsional load resistance of the spacer bar 1. Two sets of limiting cavities 9 are symmetrically opened on the damping joint rubber pad 8, and two sets of limiting blocks 7 are symmetrically arranged on the inner wall of the damping frame plate 2. The combination of the limiting blocks 7 and the limiting cavities 9 can initially limit the damping joint rubber pad 8. A connecting frame 3 is provided at the upper end of the damping joint rubber pad 8, and a clamp 4 is fixed at one end of the connecting frame 3. The clamp 4 can separate and fix the power transmission and conduction.

[0030] like Figures 1-3 As shown, in this embodiment, the damping frame plate 2 is welded to the hexagonal part of the spacer bar 1, the damping joint rubber pad 8 is fixed inside the damping frame plate 2, the damping joint rubber pad 8 has a butterfly-shaped structure, the limiting cavity 9 is formed on the damping joint rubber pad 8, the limiting block 7 is formed on the inner wall of the damping frame plate 2, the connecting frame 3 is fixed on the damping joint rubber pad 8, and the wire clamp 4 is welded to one end of the connecting frame 3.

[0031] like Figures 1-3 As shown, in this embodiment, a protective pad 6 is adhered to the inner wall of the clamp 4. The protective pad 6 is made of rubber and has a thickness of 12mm. The protective pad 6 can protect the power transmission line. One end of the clamp 4 has an open structure. The clamp 4 is made of cast aluminum alloy, which makes it easy to place the power transmission line inside the clamp 4. Two sets of locking plates 5 are symmetrically reserved at one end of the clamp 4. The locking plates 5 have locking holes. By passing the bolt through the locking holes on the locking plates 5, the power transmission line can be fixed inside the clamp 4.

[0032] The specific implementation process of this embodiment is as follows: In use, the power transmission line is separated and fixed by the wire clamp 4. During the fixing process, the protective pad 6 can protect the power transmission line. Then, during use, the spacer 1 plays an anti-galloping role for the power transmission line. At the same time, the spacer 1 obtains a large torsional movement margin by setting the butterfly-shaped damping joint rubber pad 8 at the connection between the wire clamp 4 and the damping frame plate 2. The traditional boss limiting hard connection structure of the spacer 1 is improved to the rubber pad 8 limiting soft connection structure, realizing the elastic buffer and damping limiting role of the connection form. It avoids the rigid contact between the tail of the wire clamp 4 and the damping frame plate 2 under the action of large torsional torque, improves the torsional load resistance of the spacer 1, has a good anti-galloping effect and high performance.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for preventing power line fluttering in ultra-high voltage transmission lines, characterized in that: The device includes a spacer bar (1) with a regular hexagonal structure. A damping frame plate (2) is installed at each of the hexagonal corners of the spacer bar (1). A damping joint rubber pad (8) is installed inside the damping frame plate (2). Two sets of limiting cavities (9) are symmetrically opened on the damping joint rubber pad (8). Two sets of limiting blocks (7) are symmetrically arranged on the inner wall of the damping frame plate (2). A connecting frame (3) is provided at the upper end of the damping joint rubber pad (8). A wire clamp (4) is fixed at one end of the connecting frame (3).

2. The anti-galloping device for ultra-high voltage transmission lines according to claim 1, characterized in that: The damping frame plate (2) is welded to the hexagonal corner of the spacer bar (1), and the damping joint rubber pad (8) is fixed inside the damping frame plate (2). The damping joint rubber pad (8) has a butterfly-shaped structure.

3. The anti-galloping device for ultra-high voltage transmission lines according to claim 1, characterized in that: The limiting cavity (9) is formed on the damping joint rubber pad (8), and the limiting block (7) is formed on the inner wall of the damping frame plate (2).

4. The anti-galloping device for ultra-high voltage transmission lines according to claim 3, characterized in that: The connecting frame (3) is fixed on the damping joint rubber pad (8), and the wire clamp (4) is welded to one end of the connecting frame (3).

5. The anti-galloping device for ultra-high voltage transmission lines according to claim 4, characterized in that: A protective pad (6) is adhered to the inner wall of the clamp (4). The protective pad (6) is made of rubber and has a thickness of 12mm.

6. The anti-galloping device for ultra-high voltage transmission lines according to claim 5, characterized in that: The wire clamp (4) has an open structure at one end, and the material of the wire clamp (4) is cast aluminum alloy.

7. The anti-galloping device for ultra-high voltage transmission lines according to claim 6, characterized in that: Two sets of locking plates (5) are symmetrically reserved at one end of the clamp (4), and locking holes are reserved on the locking plates (5).

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