Particle trapper for gas-insulated metal-enclosed power transmission line

Abstract

The invention relates to a particle catcher for a gas-insulated metal-enclosed power transmission line, which belongs to the technical field of power transmission and distribution, and comprises a particle catching ring with high elongation, the particle catching ring is fixedly sleeved outside three support legs and is provided with a plurality of particle holes, the side surface of the particle catching ring in contact with the three support legs is a contact surface, and the contact surface is provided with a plurality of particle holes. The contact surface is in close contact with the three supporting legs, and the side face, corresponding to the space between every two insulators, of the particle capturing ring is an outwards-protruding arc face. According to the invention, the particle capturing ring is fixedly sleeved outside the three supporting legs, so that the particle capturing ring can be firmly fixed outside the three supporting legs of the insulator; then, the side face, corresponding to the position between every two insulators, of the particle capturing ring is designed to be an outwards-protruding arc face, the capturing area of the particle capturing device can be increased, under the impact of external airflow and particles, the elongation of materials of the particle capturing device is effectively utilized, targeted and controllable overall swinging or local elastic deformation is conducted, the particles are captured more actively and more efficiently, and the particle capturing efficiency is improved. The particle capturing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of power transmission and distribution technology, and in particular to a particulate trap for gas-insulated metal-enclosed transmission lines. Background Technology

[0002] Gas-insulated metal-enclosed transmission lines are widely used in power systems due to their advantages such as large capacity and high reliability. Internally, gas-insulated metal-enclosed transmission lines typically use three-post insulators as the core support and insulation components. However, the metal particles generated during the manufacturing, installation, and operation of gas-insulated metal-enclosed transmission lines pose a significant hidden danger to their safe operation. These particles can induce partial discharge under the influence of an electric field, and even lead to insulation breakdown.

[0003] To address this issue, installing particulate traps inside gas-insulated metal-enclosed transmission lines is an effective method. Currently, the conventional approach is to use a trap made of metal mesh or perforated sheet, rolled into a cylindrical shape, fitted onto the outside of the three insulator legs of a three-post insulator, and fixed to the cylinder of the gas-insulated metal-enclosed transmission line.

[0004] In this conventional design, to ensure sufficient electrical clearance and assembly space between the outer diameter of the trap and the inner wall of the gas-insulated metal-enclosed transmission line cylinder, the contact between the trap and the insulator leg is typically a very narrow surface contact. This contact method has the following drawbacks: ① Poor installation stability: The narrow surface contact results in the trap being loosely fixed. Under airflow disturbances or slight vibrations during the operation of the gas-insulated metal-enclosed transmission line, the trap is prone to displacement or rotation, affecting its long-term reliability; ② Constraint on trap body deformation: Due to the small contact area, the constraint force of the mounting point on the trap body is also small and concentrated. This makes the movement state of the trap body unstable when using material elongation for dynamic capture (such as overall swaying or local deformation due to airflow impact), making it difficult to form an effective capture posture; ③ Insufficient utilization of elongation: The unstable mounting point prevents the trap body from fully utilizing its material elongation to adapt to and capture particles. The trap body may produce ineffective shaking due to slight loosening of the mounting point, rather than purposeful deformation for particle capture, thus reducing the effect of material elongation on the capture effect.

[0005] Therefore, how to design a particle trap that balances installation stability and efficient particle capture is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] This invention provides a particulate trap for gas-insulated metal-enclosed transmission lines, solving the technical problems of existing particulate traps being poorly fixed and having poor trapping effects.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a particulate trap for a gas-insulated metal-enclosed transmission line, wherein there are insulators in the gas-insulated metal-enclosed transmission line, and the three supporting legs of the insulators are distributed in a triangular pattern; comprising: a particulate trapping ring with high elongation, the particulate trapping ring being sleeved on the three supporting legs and having a plurality of particulate holes thereon, the side of the particulate trapping ring that contacts the three supporting legs being a contact surface, the contact surface being in close contact with the three supporting legs, and the side of the particulate trapping ring corresponding to each pair of insulators being an outwardly convex arc surface.

[0008] The beneficial effects of this invention are: it improves the structure of the existing particulate trap for gas-insulated metal-enclosed transmission lines. First, the particulate trap ring is fixed to the outside of the three support legs, which can firmly fix the particulate trap ring to the outside of the three support legs of the insulator. Then, the side of the particulate trap ring corresponding to the two pairs of insulators is designed as an outwardly convex arc surface, which can increase the trapping area of ​​the particulate trap. Under the impact of external airflow and particulates, it can effectively utilize the elongation of its material to perform purposeful and controllable overall swing or local elastic deformation, thereby capturing particulates more actively and efficiently and improving the particulate trapping efficiency.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the contact surface has the same external structure as the three supporting legs and is either a plane or a curved surface.

[0011] The further beneficial effect of adopting the above is that designing the contact surface of the particle trapping ring into the shape of an insulator can enhance the firmness and stability of the connection between the particle trapping ring and the three support legs.

[0012] Furthermore, the thickness of the particle trapping ring is 2.9–3.1 mm.

[0013] The further beneficial effect of adopting the above is that designing the thickness of the particle trapping ring to be 2.9–3.1 mm can better demonstrate the elongation of the material.

[0014] Furthermore, the particle trapping ring is made of aluminum alloy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a particulate trap for a gas-insulated metal-enclosed transmission line of the present invention, which is fitted outside the three support legs of an insulator; Figure 2 This is a front view schematic diagram of a particulate trap for a gas-insulated metal-enclosed transmission line according to the present invention.

[0016] The attached diagram lists the components represented by each number as follows: 1. Particle trapping ring; 11. Contact surface; 12. Convex arc surface; 2. Insulator; 21. Support leg. Detailed Implementation

[0017] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0018] like Figure 1 As shown, a particulate trap for a gas-insulated metal-enclosed transmission line is disclosed. The gas-insulated metal-enclosed transmission line contains insulators 2, and the three supporting legs 21 of the insulators 2 are arranged in a triangular pattern. The device is characterized by including: a particulate trapping ring 1 with high elongation, the particulate trapping ring 1 being sleeved on the three supporting legs 21 and having multiple particulate holes thereon, the side of the particulate trapping ring 1 that contacts the three supporting legs 21 being a contact surface 11, the contact surface 11 being in close contact with the three supporting legs 21, and the side of the particulate trapping ring 1 corresponding to each pair of insulators 2 being an outwardly convex arc surface 12.

[0019] like Figure 1 As shown, in some specific embodiments, the contact surface 11 has the same external structure as the three support legs 21 and both are planar or curved surfaces.

[0020] Specifically, the thickness of the particle trapping ring 1 is 2.9–3.1 mm.

[0021] Specifically, the particle trapping ring 1 is made of aluminum alloy.

[0022] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A particulate trap for a gas-insulated metal-enclosed transmission line, wherein the gas-insulated metal-enclosed transmission line contains an insulator (2), and the three supporting legs (21) of the insulator (2) are arranged in a triangular pattern; characterized in that, include: Particle trapping ring with high elongation (1). The particle capturing ring (1) is fitted around the three support legs (21) and has multiple particle holes. The side of the particle capturing ring (1) that contacts the three support legs (21) is the contact surface (11). The contact surface (11) is in close contact with the three support legs (21). The side of the particle capturing ring (1) corresponding to each pair of insulators (2) is an outwardly convex arc surface (12).

2. A particulate trap for gas-insulated metal-enclosed transmission lines according to claim 1, characterized in that, The contact surface (11) has the same shape and structure as the three supporting legs (21), and both are either flat or curved.

3. A particulate trap for gas-insulated metal-enclosed transmission lines according to claim 1, characterized in that, The thickness of the particle trapping ring (1) is 2.9 to 3.1 mm.

4. A particulate trap for gas-insulated metal-enclosed transmission lines according to claim 1, characterized in that, The particle trapping ring (1) is made of aluminum alloy.

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