An anti-wind equalizing ring for an extra-high voltage transmission line

Abstract

The application discloses a wind-resistant grading ring of an extra-high voltage transmission line and relates to the technical field of transmission lines. Due to the action of wind force, the grading ring and the connecting and fixing position are loose, the center position of the grading ring and the insulator string is deviated in a strong wind day, and the grading ring cannot be used. The wind-resistant grading ring of the extra-high voltage transmission line is provided with inclined surfaces between side clamping blocks and inner hole plates. In the process of fixing and installing, after the bolts are tightened, the gap between the inner clamping blocks and the side clamping blocks is formed into a zigzag at the edge of the clamping plate. The zigzag gap is used to limit the sliding between the clamping plate and the inner clamping plate. In the process of use, compared with the friction force between the connecting positions after the bolts are fixed, the wind force is resisted, the stability is better, and the wind-resistant stability of the connecting position of the grading ring is improved.

Description

A wind-resistant equalizing ring for ultra-high voltage transmission lines Technical Field

[0001] This invention relates to the field of power transmission line technology, specifically to a wind-resistant equalizing ring for ultra-high voltage power transmission lines. Background Technology

[0002] An equipotential bonding ring is an electrical device used in power systems. It is typically installed near insulator strings on transmission lines or near electrical equipment in substations. The main function of the equipotential bonding ring is to improve the electric field distribution around the insulator strings or electrical equipment. In high-voltage transmission lines, the uneven capacitance distribution of the insulator strings leads to an uneven distribution of the electric field strength on the insulator strings, which can easily cause local discharge in some areas, affecting the insulation performance and service life of the equipment. The equipotential bonding ring, through its special structure and position, can make the electric field distribution more uniform, reduce the local electric field strength, and thus improve the insulation performance of the insulator strings and electrical equipment. The equipotential bonding ring uses its own capacitance characteristics to change the electric field distribution. The equipotential bonding ring and the insulator strings or electrical equipment form a capacitor network. By adjusting the size and distribution of the capacitance, the electric field is more evenly distributed on the surface of the insulator strings or equipment. Specifically, the presence of the equipotential bonding ring causes the electric field lines to bend and redistribute around it, dispersing the electric field that was originally concentrated in some areas to the entire equipotential bonding ring and its surrounding area, thereby achieving the purpose of voltage equalization.

[0003] When using the equalizing ring, the wind force can cause the equalizing ring to loosen from the connection and fixing position. This can cause the center position of the equalizing ring and the insulator string to shift during windy days, rendering the equalizing ring unusable. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A wind-resistant equipotential ring for ultra-high voltage transmission lines, comprising:

[0006] A fixed plate, wherein a support foot is fixedly installed at the bottom of the fixed plate, and the support foot is evenly installed along the center position of the fixed plate;

[0007] A support mechanism is mounted on top of a fixed disk.

[0008] A ring-shaped mechanism, which is mounted on top of the support mechanism;

[0009] The bottom of the support foot is inclined outward, and both sides of the bottom of the support foot are provided with sliding grooves. An inner hole plate is fixedly installed at the center of the bottom of the support foot. A through hole is provided on the outer side of the inner hole plate, and the top of both sides of the inner hole plate is an inclined surface that slopes inward from top to bottom. Side clamping blocks are slidably installed at the sliding grooves of the support foot. Through the cooperation between the side clamping blocks and the inclined surfaces of the inner hole plate, during the fixed installation process, after the bolts are tightened, the gap between the inner clamping blocks and the side clamping blocks forms a bend at the edge of the clamping plate at the connection position. The bend in the gap restricts the sliding between the clamping plate and the inner clamping plate. During use, compared with fixing by bolts, which only relies on the friction between the connection positions to resist the wind, it has better stability and improves the wind resistance stability of the pressure equalizing ring connection position. The top of the side clamping block near the inner hole plate is provided with a protrusion that matches the inclined surface of the inner hole plate, and a round hole is provided on the outer side of the side clamping block. A bolt is slidably installed between the side clamping blocks, and the bolt passes through the through hole of the inner hole plate.

[0010] Preferably, the support mechanism includes a connecting plate, which is fixedly installed on the top of a fixed plate. A support plate is fixedly installed on the outer side of the connecting plate. The support plate is evenly installed along the center of the connecting plate. A support rod is fixedly installed on the top of each support plate. The top of each support rod is inclined outward and a collar is fixedly installed on the top of each support rod. An inner ring is fixedly installed between the support rods. The inner ring cooperates with the support rods to support and restrict the support rods, thereby improving the pressure stability of the ring when it is blown by wind or hit by foreign objects. This prevents the center of the ring from shifting from the center of the insulator string when subjected to large forces, which would prevent the equalizing ring from functioning properly for electric field equalization. An inner support rod is fixedly installed on the inner wall of the inner ring. The inner support rod is evenly installed along the center of the inner ring.

[0011] Preferably, an inner cylinder is fixedly installed at the end of the inner support rod away from the inner ring, and a top cover is fixedly installed at the top of the inner wall of the inner cylinder. The top cover is a tapered cylinder with an outer diameter that gradually increases from top to bottom. A grid plate is fixedly installed at the top of each inner support rod. The top cover cooperates with the water guide cover. In use, the top cover guides rainwater outward, while the water guide cover directs the rainwater guided by the top cover to the surrounding area away from the connection between the insulator string and the tower, preventing a large amount of rainwater from pouring onto the connection position and causing a short circuit in the transmission line. The top of the grid plate has evenly spaced arc-shaped through slots, and the bottom of the grid plate is fixedly installed with a water guide cover. The water guide cover corresponds one-to-one with the arc-shaped through slots of the grid plate, and the outer diameter of the water guide cover gradually increases from top to bottom.

[0012] Preferably, the ring mechanism includes a first ring and a second ring. The outer side of the first ring is fixedly connected to the inner wall of the collar, and the first ring is located below the second ring. The diameter of the second ring is larger than the diameter of the first ring. A connecting rod is fixedly installed between the second ring and the first ring. The connecting rod is evenly installed along the center position of the first ring. A grid cover is fixedly installed between each connecting rod. A rectangular groove is evenly opened on the outer side of the grid cover, and the grid cover is located between the first ring and the second ring. A wind guide plate is fixedly installed on the outer side of the grid cover. The wind guide plate cooperates with the grid cover. The grid groove of the grid cover cooperates with the downward inclination of the bottom end of the wind guide plate, so that the wind guide plates are staggered and stacked, ensuring the airflow path while blocking the debris carried by the wind, preventing the debris from contacting the power transmission line and causing a short circuit. The wind guide plate is evenly installed along the center position of the axis of the grid cover, and the end of the wind guide plate away from the grid cover is inclined downward.

[0013] This invention provides a wind-resistant equipotential ring for ultra-high voltage transmission lines. It has the following beneficial effects:

[0014] I. The wind-resistant equalizing ring for this ultra-high voltage transmission line, through the cooperation of the inclined surfaces between the side clamping blocks and the inner orifice plate, creates a bend in the gap between the inner clamping blocks and the side clamping blocks at the edge of the clamping plate during the fixed installation process after the bolts are tightened. This bend restricts the sliding between the clamping plate and the inner clamping plate. In use, compared with fixing by bolts, which relies solely on the friction between the connection points to resist wind blowing, it has better stability and improves the wind resistance stability of the equalizing ring connection point.

[0015] Second, the wind-resistant equalizing ring of this ultra-high voltage transmission line, through the cooperation of the inner ring and the support rod, provides support and restriction between the support rods. When the ring is blown by wind or hit by foreign objects, it improves the pressure stability of the ring and avoids the displacement of the center position of the ring from the center position of the insulator string when the force is large, which would prevent the equalizing ring from being used normally for electric field equalization.

[0016] Third, the wind-resistant equalizing ring of this ultra-high voltage transmission line works in conjunction with the top cover and the water guide cover. During use, the top cover guides rainwater outward, while the water guide cover directs the rainwater guided by the top cover to the surrounding area away from the connection between the insulator string and the tower, thus preventing a large amount of rainwater from pouring onto the connection point and causing a short circuit in the transmission line.

[0017] Fourth, the wind-resistant equalizing ring of this ultra-high voltage transmission line works in conjunction with the air guide plate and the grid cover. The grid groove of the grid cover works in conjunction with the downward tilt of the bottom of the air guide plate, so that the air guide plates are staggered and stacked to ensure the air flow path while blocking the debris carried by the wind, so as to prevent the debris from contacting the transmission line and causing a short circuit. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the structure of a wind-resistant equalizing ring for ultra-high voltage transmission lines according to the present invention.

[0019] Figure 2 is a top view of the structure of a wind-resistant equalizing ring for an ultra-high voltage transmission line according to the present invention.

[0020] Figure 3 is a partial top view of the structure of a wind-resistant equalizing ring for ultra-high voltage transmission lines according to the present invention.

[0021] Figure 4 is a partial structural side view of a wind-resistant equalizing ring for ultra-high voltage transmission lines according to the present invention.

[0022] Figure 5 is a structural schematic diagram of the support mechanism of the present invention;

[0023] Figure 6 is a cross-sectional view of the support mechanism of the present invention;

[0024] Figure 7 is a top sectional view of the support mechanism of the present invention;

[0025] Figure 8 is a schematic diagram of the ring mechanism of the present invention;

[0026] Figure 9 is a structural side view of the ring mechanism of the present invention.

[0027] In the diagram: 1. Ring mechanism; 2. Support mechanism; 3. Support foot; 4. Fixing plate; 5. Side clamping block; 6. Inner hole plate; 7. Bolt; 11. First ring; 12. Second ring; 13. Connecting rod; 14. Grille cover; 15. Air guide plate; 201. Connecting plate; 202. Support plate; 203. Support rod; 204. Collar; 205. Inner ring; 206. Water guide cover; 207. Top cover cylinder; 208. Inner support rod; 209. Inner cylinder; 210. Grille plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] In the first embodiment, as shown in Figures 1 to 4, the present invention provides a technical solution:

[0030] A wind-resistant equipotential ring for ultra-high voltage transmission lines, comprising:

[0031] The fixed plate 4 has a support foot 3 fixedly installed at its bottom, and the support foot 3 is evenly installed along the center of the fixed plate 4.

[0032] Support mechanism 2 is installed on the top of fixed plate 4;

[0033] Ring mechanism 1 is installed on top of support mechanism 2;

[0034] The bottom of the support leg 3 slopes outward, and both sides of the bottom of the support leg 3 have sliding grooves. An inner hole plate 6 is fixedly installed at the center of the bottom of the support leg 3. It is connected to the support mechanism 2 through the fixing plate 4. The inner hole plate 6 at the bottom of the support leg 3 is inserted into the clamping plate at the connection position. Bolts 7 pass through the side clamps 5 and the inner hole plate 6. The worker tightens the bolts 7, so that the side clamps 5 on both sides of the inner hole plate 6 have through holes on the outer side. The top of both sides of the inner hole plate 6 are inclined surfaces that slope inward from top to bottom. The side clamps 5 are slidably installed at the sliding grooves of the support leg 3. During the tightening of the bolts 7, they gradually move closer to the inner hole plate 6. The perforated plate 6 utilizes the inclined surfaces on both sides of the inner perforated plate 6 to match the inclined surfaces of the side clamping blocks 5 near the inner perforated plate 6. As they gradually approach each other, a tortuous gap is formed at the edge of the clamping plate at the connection position. In windy weather, the tortuous gap restricts the swaying and pulling caused by the wind, preventing the connection position from loosening due to strong winds and affecting the use of the equalizing ring. The top of the side clamping block 5 near the inner perforated plate 6 is provided with a protrusion that matches the inclined surface of the inner perforated plate 6, and the outer side of the side clamping block 5 is provided with a round hole. Bolts 7 are slidably installed between the side clamping blocks 5, and the bolts 7 pass through the through holes of the inner perforated plate 6.

[0035] In the second embodiment, based on the first embodiment, as shown in Figures 5 to 7, the support mechanism 2 includes a connecting plate 201, which is fixedly installed on the top of the fixed plate 4. A support plate 202 is fixedly installed on the outer side of the connecting plate 201. The support plate 202 is evenly installed along the center position of the connecting plate 201. A support rod 203 is fixedly installed on the top of each support plate 202. While being connected and fixed to the fixed plate 4 through the connecting plate 201, the support rod 203 and the collar 204 support the ring mechanism 1, so that the ring mechanism 1 surrounds the connection position between the insulator string and the transmission tower. The top of the support rod 203 is inclined outward, and a collar 204 is fixedly installed on the top of each support rod 203. An inner ring 205 is fixedly installed between the support rods 203. An inner support rod 208 is fixedly installed on the inner wall of the inner ring 205. The inner support rod 208 is evenly installed along the center position of the inner ring 205.

[0036] An inner cylinder 209 is fixedly installed at the end of the inner support rod 208 away from the inner ring 205. A top cover cylinder 207 is fixedly installed on the top of the inner wall of the inner cylinder 209. The top cover cylinder 207 is a tapered cylinder with an outer diameter that gradually increases from top to bottom. A grating plate 210 is fixedly installed on the top of each inner support rod 208. The top of the grating plate 210 has evenly spaced arc-shaped through grooves. While providing support, it cooperates with the grating plate 210 through the water guide cover 206. In rainy weather, the water flows through the inner ring 209... The conical shape of the cylinder 209 guides rainwater toward the grid plate 210. At the same time, the arc-shaped groove of the grid plate 210 conducts rainwater downwards. In conjunction with the water guide cover 206, the rainwater is guided outwards, flowing towards the connection between the insulator string and the power tower. The water guide cover 206 is fixedly installed at the bottom of the grid plate 210. The water guide cover 206 corresponds one-to-one with the arc-shaped groove of the grid plate 210, and the outer diameter of the water guide cover 206 gradually increases from top to bottom.

[0037] In the third embodiment, based on embodiments one and two, as shown in Figures 8 and 9, the ring mechanism 1 includes a first ring 11 and a second ring 12. The outer side of the first ring 11 is fixedly connected to the inner wall of the collar 204, and the first ring 11 is located below the second ring 12. By cooperating with the first ring 11 and the second ring 12, the conductivity of their metallic materials is used to make the electric field more evenly distributed on the surface of the insulator string. The diameter of the second ring 12 is larger than the diameter of the first ring 11. A connecting rod 13 is fixedly installed between the second ring 12 and the first ring 11. The connecting rod 13 is evenly installed along the center position of the first ring 11.

[0038] A grid cover 14 is fixedly installed between each of the connecting rods 13. Rectangular grooves are evenly opened on the outer side of the grid cover 14, and the grid cover 14 is located between the first ring 11 and the second ring 12. A wind guide plate 15 is fixedly installed on the outer side of the grid cover 14. During use, when encountering strong winds, the wind guide plate 15 guides the wind on the windward side. When the wind blows, the bottom end of the wind guide plate 15 is tilted so that the wind guide plates 15 are stacked together with the grid cover 14 to block the debris carried by the wind from entering the interior. While uniformizing the electric field, it prevents debris from entering the connection position between the insulator string and the power tower. The wind guide plate 15 is evenly installed along the center position of the axis of the grid cover 14, and the end of the wind guide plate 15 away from the grid cover 14 is inclined downward.

[0039] In use, the equalizing ring is installed at the connection point between the insulator string and the power tower in the transmission line. A capacitor network is formed between the equalizing ring and the insulator string. By adjusting the size and distribution of the capacitor, the electric field is more evenly distributed on the surface of the insulator string. At the same time, the ring body mechanism 1 is supported by the support mechanism 2 during use, and rainwater is guided when it rains.

[0040] When installing the equalizing ring, the fixed plate 4 is connected to the support mechanism 2, and the inner plate 6 at the bottom of the support foot 3 is inserted into the clamping plate at the connection position. The bolt 7 passes through the side clamping block 5 and the inner plate 6. The worker tightens the bolt 7, so that the side clamping blocks 5 on both sides of the inner plate 6 gradually move closer to the inner plate 6 during the tightening process. The inclined surfaces on the top of both sides of the inner plate 6 are adapted to the inclined surfaces of the side clamping blocks 5 on the side close to the inner plate 6. During the gradual approach, a tortuous gap is formed at the edge of the clamping plate at the connection position. In windy weather, the tortuous gap restricts the swaying and pulling caused by the wind, preventing the connection position from loosening due to strong winds, which would affect the use of the equalizing ring.

[0041] In the support mechanism 2, while being connected and fixed to the fixed plate 4 via the connecting plate 201, the ring mechanism 1 is supported by the support rod 203 and the collar 204, so that the ring mechanism 1 surrounds the connection position between the insulator string and the transmission tower. At the same time, while providing support, the water guide cover 206 cooperates with the grid plate 210. In rainy weather, the conical shape of the inner cylinder 209 guides the rainwater to the grid plate 210, while the arc-shaped through groove of the grid plate 210 conducts the rainwater downward. With the help of the water guide cover 206, the rainwater is guided outward and flows towards the connection position between the insulator string and the power tower.

[0042] In the ring mechanism 1, the first ring 11 and the second ring 12 cooperate to make the electric field more evenly distributed on the surface of the insulator string by utilizing the conductivity of their metallic materials. During use, when encountering windy weather, the wind guide plate 15 guides the wind on the windward side. When the wind blows, the bottom end of the wind guide plate 15 is tilted to make the wind guide plates 15 stacked together with the grid cover 14 to block the debris carried by the wind from entering the interior. While uniformizing the electric field, it prevents debris from entering the connection position between the insulator string and the power tower.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind-resistant equalizing ring for ultra-high voltage transmission lines, characterized in that, include: A fixed plate (4) is provided with a support foot (3) fixedly installed at its bottom. The support foot (3) is evenly installed along the center of the fixed plate (4). A support mechanism (2) is installed on the top of the fixed plate (4). A ring mechanism (1) is installed on the top of the support mechanism (2). The bottom end of the support foot (3) is inclined outward, and both sides of the bottom of the support foot (3) are provided with sliding grooves. 3) An inner perforated plate (6) is fixedly installed at the center of the bottom. The outer side of the inner perforated plate (6) has a through hole, and the top of both sides of the inner perforated plate (6) is an inclined surface that slopes inward from top to bottom. Side clamping blocks (5) are slidably installed at the groove of the support foot (3). The top of the side clamping block (5) near the inner perforated plate (6) has a protrusion that matches the inclined surface of the inner perforated plate (6), and the outer side of the side clamping block (5) has a round hole. Bolts (7) are slidably installed between the inner and outer holes of the inner hole plate (6); the support mechanism (2) includes a connecting plate (201), which is fixedly installed on the top of the fixed plate (4), and a support plate (202) is fixedly installed on the outer side of the connecting plate (201). The support plate (202) is evenly installed along the center position of the connecting plate (201); a support rod (203) is fixedly installed on the top of the support plate (202), the top of the support rod (203) is inclined outward, and a collar (204) is fixedly installed on the top of the support rod (203); the ring mechanism (1) includes a first ring (11) and a second ring (12). The outer side of the first ring (11) is fixedly connected to the inner wall of the collar (204), and the first ring (11) is located below the second ring (12). The diameter of the second ring (12) is larger than the diameter of the first ring (11).

2. The wind-resistant equalizing ring for ultra-high voltage transmission lines according to claim 1, characterized in that: An inner ring (205) is fixedly installed between the support rods (203), and an inner support rod (208) is fixedly installed on the inner wall of the inner ring (205). The inner support rod (208) is evenly installed along the center position of the inner ring (205).

3. The wind-resistant equalizing ring for ultra-high voltage transmission lines according to claim 2, characterized in that: An inner cylinder (209) is fixedly installed at the end of the inner support rod (208) away from the inner ring (205). A top cover cylinder (207) is fixedly installed on the top of the inner wall of the inner cylinder (209). The top cover cylinder (207) is a tapered cylinder with an outer diameter that gradually increases from top to bottom.

4. The wind-resistant equalizing ring for ultra-high voltage transmission lines according to claim 3, characterized in that: The top of each inner support rod (208) is fixedly installed with a grid plate (210). The top of the grid plate (210) is uniformly provided with arc-shaped through grooves, and the bottom of the grid plate (210) is fixedly installed with a water guide cover (206). The water guide cover (206) corresponds one-to-one with the arc-shaped through groove of the grid plate (210), and the outer diameter of the water guide cover (206) gradually increases from top to bottom.

5. The wind-resistant equalizing ring for ultra-high voltage transmission lines according to claim 4, characterized in that: A connecting rod (13) is fixedly installed between the second ring (12) and the first ring (11), and the connecting rod (13) is evenly installed along the center position of the first ring (11).

6. The wind-resistant equalizing ring for ultra-high voltage transmission lines according to claim 5, characterized in that: A grid cover (14) is fixedly installed between each of the connecting rods (13). The grid cover (14) has a rectangular groove evenly opened on its outer side, and the grid cover (14) is located between the first ring (11) and the second ring (12).

7. A wind-resistant equalizing ring for ultra-high voltage transmission lines according to claim 6, characterized in that: A guide plate (15) is fixedly installed on the outside of the grille cover (14). The guide plate (15) is evenly installed along the center position of the axis of the grille cover (14), and the end of the guide plate (15) away from the grille cover (14) is inclined downward.

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