Assembled grading ring

Abstract

The invention relates to the technical field of electric power fittings, and particularly discloses an assembled grading ring which comprises a grading pipe, an adjusting rod is fixedly connected to the side face of the grading pipe, a fixing frame is fixedly connected to the side face of the adjusting rod, a fixing plate is fixedly connected to the inner wall of the fixing frame, and the fixing frame comprises a main support. The side face of the main support is rotationally connected with a left rotating frame through a rotating shaft, the side face of the left rotating frame is fixedly connected with a fixing seat, the side face of the fixing seat is fixedly connected with a braking seat, and the side face of the main support is fixedly connected with the side face of a pressure equalizing pipe. The end, away from the left rotating frame, of the main support is rotationally connected with a right rotating frame through a rotating shaft, and during installation, the brake seat is released, so that the left rotating frame and the right rotating frame rotate along the side face of the main support, and therefore the assembled grading ring can be conveniently clamped into the side face of a cable. The purposes of convenient installation and disassembly and automatic adjustment according to the cable are achieved.

Description

Technical Field

[0001] This invention relates to the field of power fittings technology, specifically to an assembled equalizing ring. Background Technology

[0002] An equipotential bonding ring is a ring-shaped fitting installed at the high-voltage end of an insulator string. Its main functions can be summarized as follows: shielding the fitting and the insulator end; reducing local electric field intensity; preventing corona discharge and radio interference; and optimizing the electric field to slow down the aging of the silicone rubber sheds and the electrolytic corrosion of the core rod of the composite insulator, thus extending equipment life. Most equipotential bonding rings used in high-voltage lines are integral structures made of bent and welded aluminum alloy tubing. With increasing voltage levels and more complex operating environments, this traditional structure faces multiple challenges in engineering applications. The inherent structure of the composite insulator results in extremely uneven electric field distribution along its surface, making it prone to corona discharge from water droplets in humid environments, accelerating material aging, and in severe cases, causing flashover. For example, in 500kV compact lines, optimizing the parameters of the equipotential bonding ring is necessary to control the peak electric field intensity on the shed surface within a safe range. In ultra-high-voltage DC lines and other applications, the electric field concentration at the fixing bolts of the equipotential bonding ring can lead to corona discharge, causing bolt electrolytic corrosion and threatening structural stability. This necessitates meticulous design of the grading ring, considering the field strength control of all components. The grading rings used in UHV projects are large (ring diameters can reach meters), and their integrated structure presents significant challenges for transportation, hoisting, and installation in confined construction sites such as mountainous areas and remote fields, increasing operational risks and costs. For different line parameters (voltage, tower type, insulator model) and operating environments, personalized optimization of the grading ring's pipe diameter, ring diameter, and installation location (shielding depth) is required. Traditional integrated rings are difficult to adjust and lack flexibility. Their application range covers voltage levels of 330kV and above, and specific requirements are placed on the product's mechanical strength (e.g., needing to withstand a static load of not less than 1000N) and corona performance. This reflects the increasingly stringent requirements for the performance and reliability of grading rings.

[0003] The equalizing ring proposed according to patent number CN105957659A includes an arc-shaped body in the form of a ring. The arc-shaped body is provided with a connecting protrusion extending outward along its axial direction. It also includes a connecting plate disposed on the connecting protrusion and the arc-shaped body to prevent contaminants from falling from the arc-shaped body. This equalizing ring effectively prevents the insulators located below it from being contaminated by dirt, thereby reducing line tripping and effectively ensuring the stable operation of the transmission line.

[0004] In actual installation, the above-mentioned equipment relies on manual adjustment of the cables, which is inconvenient and makes it difficult to stably form a protective field. External fixing measures increase the complexity of the equipment and make maintenance inconvenient. Summary of the Invention

[0005] To solve the above technical problems, the present invention is achieved through the following technical solution: an assembled pressure equalization ring, including a pressure equalization tube, an adjusting rod fixedly connected to the side of the pressure equalization tube, a fixing frame fixedly connected to the side of the adjusting rod, and a fixing plate fixedly connected to the inner wall of the fixing frame;

[0006] The mounting bracket includes a main bracket. A left rotating bracket is rotatably connected to the side of the main bracket via a rotating shaft. A fixing seat is fixedly connected to the side of the left rotating bracket. A brake seat is fixedly connected to the side of the fixing seat. The side of the main bracket is fixedly connected to the side of the equalizing pipe. A right rotating bracket is rotatably connected to the end of the main bracket away from the left rotating bracket via a rotating shaft. During installation, the brake seat is released, causing the left and right rotating brackets to rotate along the side of the main bracket, thus facilitating insertion into the side of the cable. The brake seat then fixes the left and right rotating brackets. Rotating the adjusting rod moves the fixing plate, which in turn moves the fixing plate to adjust the side of the cable. The cable is pressed and fixed by rotating the adjusting rod, which moves the fixing plate to the side of the cable for pressing and fixing. The left and right rotating frames are rotated, which fixes the brake seat to the left and right rotating frames. This fixes multiple sets of fixing plates at different angles to the cable, so that the equalizing tube forms a protective field near the insulation ring, thereby protecting the cable. The connection method of the fixing plate driving the equalizing tube to rotate facilitates the automatic adjustment of the equalizing tube according to different cable angles, thus facilitating the formation of a protective field near the cable. Furthermore, the method of fixing the cable by multiple sets of fixing plates pressing simultaneously makes it easy to fix the equalizing ring to the surface of cables of different thicknesses.

[0007] Preferably, the brake seat includes a sliding seat, a brake plate is slidably connected to the side of the sliding seat, and a spring is fixedly connected to the side of the brake plate. The end of the spring away from the brake plate is fixedly connected to the inner wall of the sliding seat. The side of the sliding seat is fixedly connected to the side of the fixed seat. The side of the right rotating frame is provided with a fixing hole that matches the sliding seat. When fixing, the sliding seat passes through the right rotating frame. During the passage, the right rotating frame squeezes the brake plate. The brake plate squeezes and deforms the spring, which generates elastic force. The elastic force of the spring drives the brake plate to move along the surface of the right rotating frame, thereby braking the side of the right rotating frame and fixing the right rotating frame to the side of the sliding seat. This facilitates the fixed connection between the main bracket and the left and right rotating frames, making it easier to install the cable stably. Furthermore, the force between the left and right rotating frames is directly borne by the side of the sliding seat, making it easier for the left and right rotating frames to withstand higher loads, thus facilitating the stable installation of the equalizing ring.

[0008] Preferably, the adjusting rod includes a hollow screw, a spring is sleeved and slidably connected to the side of the hollow screw, a rotating rod is rotatably connected to the side of the hollow screw, an adjusting cap is sleeved and threadedly connected to the side of the hollow screw, the side of the adjusting cap is rotatably connected to the side of the main support, and the side of the rotating rod is fixedly connected to the side of the pressure equalizing pipe.

[0009] Preferably, the rotating rod includes a rotating seat, a connecting rod is fixedly connected to the side of the rotating seat, the connecting rod passes through the side of the hollow screw and is rotatably connected to the side of the hollow screw, the side of the rotating seat is fixedly connected to the side of the pressure equalizing pipe, and the end of the connecting rod away from the rotating seat is fixedly connected to the side of the fixed plate.

[0010] Preferably, the adjusting cap includes a rotating sleeve with a rotating groove on its side. A support ring is fixedly connected to the end of the rotating sleeve away from the rotating groove. The rotating sleeve is sleeved on the side of the hollow screw and threadedly connected to the side of the hollow screw. The rotating sleeve is rotatably connected to the side of the main bracket through the rotating groove. The side of the support ring contacts the side of the spring. During adjustment, the rotating sleeve is manually rotated. The rotation of the rotating sleeve drives the hollow screw to move through the thread. The movement of the hollow screw drives the fixed plate to move. The movement of the fixed plate compresses and fixes the cable. The spring facilitates increasing the pressure between the rotating seat and the support ring, thereby facilitating the maintenance of the rotating sleeve's rotation state and ensuring a stable state after tightening. The connecting rod facilitates the synchronous rotation of the pressure equalizing tube after the fixed plate rotates, thereby facilitating automatic adjustment of the pressure equalizing tube according to the cable angle.

[0011] Preferably, the fixing plate includes a main support plate, a spring sheet is fixedly connected to the side of the main support plate, a secondary support plate is fixedly connected to the side of the spring sheet at a position above the main support plate, the side of the spring sheet contacts the side of the main bracket, and the side of the main support plate is fixedly connected to the side of the connecting rod.

[0012] Preferably, the secondary support plate includes a support base, the side of which has an arc-shaped groove, and the inner wall of the arc-shaped groove has an anti-slip groove. The side of the support base is fixedly connected to the side of the spring plate. During the movement of the spring plate driven by the hollow screw, the movement of the spring plate drives the main support plate and the support base to move synchronously, thereby squeezing and fixing the cable. The arc-shaped groove on the side of the main support plate and the support base facilitates the increase of the contact area with the cable, thereby increasing the stability of the installation. The anti-slip groove also facilitates the increase of the friction of the cable, making the pressure equalizing ring more firmly installed on the side of the cable. At the same time, the spring plate facilitates the elastic contact of the support base with the side of the cable, thereby increasing the stability of the installation and avoiding uneven contact caused by hard connection.

[0013] This invention provides an assembled equalizing ring. It has the following beneficial effects:

[0014] 1. This type of assembled equalizing ring features a brake seat. During installation, releasing the brake seat allows the left and right rotating brackets to rotate along the side of the main support, easily engaging one side of the cable and locking it in place via the brake seat. Rotating the adjusting rod moves the fixing plate towards the side of the cable, applying pressure for a secure fixation. The rotation of the left and right rotating brackets, combined with the locking function of the brake seat, allows multiple fixing plates to grip the cable from different angles, thereby creating a uniform protective field around the equalizing tube, effectively protecting the cable. The linkage design between the fixing plates and the equalizing tube allows the equalizing tube to automatically adjust its direction according to the cable angle, ensuring the protective field always surrounds the cable. Furthermore, the synchronous clamping mechanism of multiple fixing plates allows this equalizing ring to adapt to cables of different thicknesses, achieving broad compatibility.

[0015] 2. This type of assembled equalizing ring features a right-hand rotating bracket. During installation, the sliding seat passes through the right-hand rotating bracket. The bracket presses against the brake plate, causing the spring to deform and generate a rebound force. This force pushes the brake plate against the surface of the right-hand rotating bracket, achieving a secure lock between the sliding seat and the bracket. This connection method integrates the main support with the left and right rotating brackets, ensuring stability when installed on cables. The sliding seat directly bears the force of the left and right rotating brackets, giving the overall structure a high load-bearing capacity and ensuring reliable installation of the equalizing ring under various conditions.

[0016] 3. This type of assembled equalizing ring is equipped with a spring. During adjustment, the rotating sleeve is manually rotated, and the hollow screw drives the fixing plate to move through the threaded transmission, thereby clamping the cable. The spring increases the pressure between the rotating seat and the support ring, helping to maintain the rotation of the rotating sleeve and keeping it stably locked after tightening. The linkage structure allows the fixing plate to synchronously drive the equalizing tube to adjust its angle when rotating, thereby automatically calibrating the direction of the equalizing tube according to the cable route and ensuring effective coverage of the protective field.

[0017] 4. This type of assembled equalizing ring features a main support plate. When the hollow screw moves, it causes the spring plates and the connected main support plate and support base to shift synchronously, collectively pressing the cable. The arc-shaped grooves on the surfaces of the main support plate and support base increase the contact area with the cable, improving installation stability. The anti-slip groove design further increases friction, making the equalizing ring more securely fixed to the cable. The spring plate structure maintains elastic contact between the support base and the cable, avoiding stress concentration caused by rigid connections, thereby improving overall adaptability, installation uniformity, and stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the assembled equalizing ring structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the fixing frame structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the brake seat structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the adjusting rod structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the rotating rod structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the adjustable cap structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the fixing plate structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the secondary support plate structure of the present invention.

[0026] In the diagram: 1. Equalizing pipe; 2. Adjusting rod; 3. Fixing frame; 4. Fixing plate; 301. Main support; 302. Left rotating frame; 303. Fixing seat; 304. Brake seat; 305. Right rotating frame; 3041. Sliding seat; 3042. Brake plate; 3043. Spring; 201. Hollow screw; 202. Spring; 203. Rotating rod; 204. Adjusting cap; 2031. Rotating seat; 2032. Connecting rod; 2041. Rotating sleeve; 2042. Rotating groove; 2043. Support ring; 401. Main support plate; 402. Spring plate; 403. Secondary support plate; 4031. Support base; 4032. Arc groove; 4033. Anti-slip groove. Detailed Implementation

[0027] 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.

[0028] For the first embodiment, please refer to... Figures 1-2 The present invention provides a technical solution: an assembled pressure equalization ring, including a pressure equalization tube 1, an adjusting rod 2 fixedly connected to the side of the pressure equalization tube 1, a fixing frame 3 fixedly connected to the side of the adjusting rod 2, and a fixing plate 4 fixedly connected to the inner wall of the fixing frame 3.

[0029] The fixed frame 3 includes a main support 301. A left rotating frame 302 is rotatably connected to the side of the main support 301 via a rotating shaft. A fixed seat 303 is fixedly connected to the side of the left rotating frame 302. A brake seat 304 is fixedly connected to the side of the fixed seat 303. The side of the main support 301 is fixedly connected to the side of the pressure equalization pipe 1. A right rotating frame 305 is rotatably connected to the end of the main support 301 away from the left rotating frame 302 via a rotating shaft.

[0030] During installation, release the brake seat 304, causing the left rotating bracket 302 and the right rotating bracket 305 to rotate along the side of the main bracket 301, thus facilitating their insertion into the side of the cable. The brake seat 304 then secures the left rotating bracket 302 and the right rotating bracket 305. Rotate the adjusting rod 2, which moves the fixing plate 4, pressing and securing the side of the cable. Simultaneously, rotating the adjusting rod 2 moves the fixing plate 4 into position to press and secure the side of the cable. Then, rotate the left rotating bracket 302 and the right rotating bracket 305. This allows the brake seat 304 to fix the left rotating frame 302 and the right rotating frame 305, thereby fixing multiple sets of fixing plates 4 at different angles toward the cable. This allows the equalizing tube 1 to form a protective field near the insulating ring, thus protecting the cable. The connection method of rotating the equalizing tube 1 through the fixing plates 4 facilitates the automatic adjustment of the equalizing tube 1 according to different cable angles, thereby facilitating the formation of a protective field near the cable. Furthermore, the method of fixing the cable by the multiple sets of fixing plates 4 synchronously squeezing it facilitates the fixing of the equalizing ring to the surface of cables of different thicknesses.

[0031] Second embodiment, please refer to Figures 1-3 Based on the first embodiment, the present invention provides a technical solution: the brake seat 304 includes a sliding seat 3041, a brake plate 3042 is slidably connected to the side of the sliding seat 3041, a spring piece 3043 is fixedly connected to the side of the brake plate 3042, one end of the spring piece 3043 away from the brake plate 3042 is fixedly connected to the inner wall of the sliding seat 3041, the side of the sliding seat 3041 is fixedly connected to the side of the fixed seat 303, and a fixing hole adapted to the sliding seat 3041 is opened on the side of the right rotating frame 305.

[0032] During the fixing process, the sliding seat 3041 passes through the right rotating frame 305. During this process, the right rotating frame 305 presses against the brake plate 3042. The brake plate 3042 presses against the spring 3043, causing it to deform. The deformation of the spring 3043 generates elastic force, which drives the brake plate 3042 to move along the surface of the right rotating frame 305. This brakes the side of the right rotating frame 305 and fixes it to the side of the sliding seat 3041. This facilitates a fixed connection between the main bracket 301 and the left rotating frame 302 and the right rotating frame 305, making it easier to install the cable stably. Furthermore, the force between the left rotating frame 302 and the right rotating frame 305 is directly borne by the side of the sliding seat 3041, allowing the left rotating frame 302 and the right rotating frame 305 to withstand higher loads, thus facilitating the stable installation of the equalizing ring.

[0033] Third embodiment, please refer to Figures 1-6 Based on the second embodiment, the present invention provides a technical solution: the adjusting rod 2 includes a hollow screw 201, a spring 202 is sleeved and slidably connected to the side of the hollow screw 201, a rotating rod 203 is rotatably connected to the side of the hollow screw 201, an adjusting cap 204 is sleeved and threadedly connected to the side of the hollow screw 201, the side of the adjusting cap 204 is rotatably connected to the side of the main support 301, and the side of the rotating rod 203 is fixedly connected to the side of the pressure equalizing pipe 1.

[0034] The rotating rod 203 includes a rotating seat 2031. A connecting rod 2032 is fixedly connected to the side of the rotating seat 2031. The connecting rod 2032 passes through the side of the hollow screw 201 and is rotatably connected to the side of the hollow screw 201. The side of the rotating seat 2031 is fixedly connected to the side of the pressure equalizing pipe 1. The end of the connecting rod 2032 away from the rotating seat 2031 is fixedly connected to the side of the fixing plate 4.

[0035] The adjusting cap 204 includes a rotating sleeve 2041. A rotating groove 2042 is provided on the side of the rotating sleeve 2041. A support ring 2043 is fixedly connected to the end of the rotating sleeve 2041 away from the rotating groove 2042. The rotating sleeve 2041 is sleeved on the side of the hollow screw 201 and threadedly connected to the side of the hollow screw 201. The rotating sleeve 2041 is rotatably connected to the side of the main bracket 301 through the rotating groove 2042. The side of the support ring 2043 contacts the side of the spring 202.

[0036] During adjustment, the rotating sleeve 2041 is manually rotated. The rotation of the rotating sleeve 2041 drives the hollow screw 201 to move through the thread. The movement of the hollow screw 201 drives the fixed plate 4 to move. The movement of the fixed plate 4 compresses and fixes the cable. The spring 202 is set to increase the pressure between the rotating seat 2031 and the support ring 2043, thereby facilitating the maintenance of the rotation state of the rotating sleeve 2041 and ensuring a stable state after tightening. The connecting rod 2032 is set to drive the pressure equalizing tube 1 to rotate synchronously after the fixed plate 4 rotates, thereby facilitating the automatic adjustment of the pressure equalizing tube 1 according to the angle of the cable.

[0037] For the fourth embodiment, please refer to [link / reference]. Figures 1-8 Based on the third embodiment, the present invention provides a technical solution: the fixing plate 4 includes a main support plate 401, a spring sheet 402 is fixedly connected to the side of the main support plate 401, a secondary support plate 403 is fixedly connected to the side of the spring sheet 402 at a position above the main support plate 401, the side of the spring sheet 402 contacts the side of the main bracket 301, and the side of the main support plate 401 is fixedly connected to the side of the connecting rod 2032.

[0038] The secondary support plate 403 includes a support base 4031, an arc-shaped groove 4032 is provided on the side of the support base 4031, and an anti-slip groove 4033 is provided on the inner wall of the arc-shaped groove 4032. The side of the support base 4031 is fixedly connected to the side of the spring plate 402.

[0039] During the movement of the hollow screw 201 and the spring plate 402, the movement of the spring plate 402 causes the main support plate 401 and the support base 4031 to move synchronously, thereby squeezing and fixing the cable. The arc-shaped groove 4032 on the side of the main support plate 401 and the support base 4031 facilitates the increase of the contact area with the cable, thereby increasing the stability of the installation. The anti-slip groove 4033 facilitates the increase of the friction of the cable, making the pressure equalizing ring more firmly installed on the side of the cable. At the same time, the spring plate 402 facilitates the elastic contact of the support base 4031 with the side of the cable, thereby increasing the stability of the installation and avoiding uneven contact caused by hard connection.

[0040] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An assembled equalizing ring, characterized in that: It includes an equalizing pipe (1), an adjusting rod (2) is fixedly connected to the side of the equalizing pipe (1), a fixing frame (3) is fixedly connected to the side of the adjusting rod (2), and a fixing plate (4) is fixedly connected to the inner wall of the fixing frame (3). The fixed frame (3) includes a main support (301), a left rotating frame (302) is rotatably connected to the side of the main support (301) via a rotating shaft, a fixed seat (303) is fixedly connected to the side of the left rotating frame (302), a brake seat (304) is fixedly connected to the side of the fixed seat (303), the side of the main support (301) is fixedly connected to the side of the pressure equalization pipe (1), and a right rotating frame (305) is rotatably connected to the end of the main support (301) away from the left rotating frame (302) via a rotating shaft.

2. The assembled equalizing ring according to claim 1, characterized in that: The brake seat (304) includes a sliding seat (3041), a brake plate (3042) is slidably connected to the side of the sliding seat (3041), a spring piece (3043) is fixedly connected to the side of the brake plate (3042), one end of the spring piece (3043) away from the brake plate (3042) is fixedly connected to the inner wall of the sliding seat (3041), the side of the sliding seat (3041) is fixedly connected to the side of the fixed seat (303), and the side of the right rotating frame (305) is provided with a fixing hole that matches the sliding seat (3041).

3. The assembled equalizing ring according to claim 1, characterized in that: The adjusting rod (2) includes a hollow screw (201), a spring (202) is sleeved and slidably connected to the side of the hollow screw (201), a rotating rod (203) is rotatably connected to the side of the hollow screw (201), an adjusting cap (204) is sleeved and threadedly connected to the side of the hollow screw (201), the side of the adjusting cap (204) is rotatably connected to the side of the main support (301), and the side of the rotating rod (203) is fixedly connected to the side of the pressure equalizing pipe (1).

4. The assembled equalizing ring according to claim 3, characterized in that: The rotating rod (203) includes a rotating seat (2031), and a connecting rod (2032) is fixedly connected to the side of the rotating seat (2031). The connecting rod (2032) passes through the side of the hollow screw (201) and is rotatably connected to the side of the hollow screw (201). The side of the rotating seat (2031) is fixedly connected to the side of the pressure equalization pipe (1). The end of the connecting rod (2032) away from the rotating seat (2031) is fixedly connected to the side of the fixing plate (4).

5. The assembled equalizing ring according to claim 3, characterized in that: The adjusting cap (204) includes a rotating sleeve (2041), a rotating groove (2042) is provided on the side of the rotating sleeve (2041), and a support ring (2043) is fixedly connected to one end of the rotating sleeve (2041) away from the rotating groove (2042).

6. The assembled equalizing ring according to claim 5, characterized in that: The rotating sleeve (2041) is sleeved on the side of the hollow screw (201) and threadedly connected to the side of the hollow screw (201). The rotating sleeve (2041) is rotatably connected to the side of the main bracket (301) through the rotating groove (2042). The side of the support ring (2043) is in contact with the side of the spring (202).

7. The assembled equalizing ring according to claim 1, characterized in that: The fixing plate (4) includes a main support plate (401), a spring sheet (402) is fixedly connected to the side of the main support plate (401), and a secondary support plate (403) is fixedly connected to the side of the spring sheet (402) above the main support plate (401).

8. The assembled equalizing ring according to claim 7, characterized in that: The side of the spring sheet (402) is in contact with the side of the main bracket (301), and the side of the main support plate (401) is fixedly connected to the side of the connecting rod (2032).

9. An assembled equalizing ring according to claim 7, characterized in that: The secondary support plate (403) includes a support base (4031), the side of the support base (4031) is provided with an arc groove (4032), the inner wall of the arc groove (4032) is provided with an anti-slip groove (4033), and the side of the support base (4031) is fixedly connected to the side of the spring plate (402).

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