Insulation voltage-sharing ball of ultrahigh-voltage transformer
By employing fastening components and rubber plugs in the insulation equalization ball of the ultra-high voltage transformer, the problem of loose connections was solved, ensuring the stability of insulation performance and electric field distribution, preventing contaminants from entering, and improving the operational reliability of the transformer.
Patent Information
- Application Number
- CN202520428622.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Traditional ultra-high voltage transformer insulation equalization devices are prone to loosening at connection points under vibration, affecting insulation performance and the uniformity of electric field distribution, thus posing safety hazards.
The design includes a mounting screw, housing, fastening components, sealing cap, and rubber plug. The threaded connection of the fastening components and the friction of the rubber plug ensure a secure connection between the mounting screw and the housing, and prevent external contaminants from entering.
It improves the connection stability between the insulating equipotential ball and the transformer, enhances the insulation performance and the uniformity of the electric field distribution, prevents loose connections and contaminant entry, and ensures the stable operation of the transformer.
Smart Images
Figure CN223871326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of equalizing sphere technology, specifically to an equalizing sphere for insulation of ultra-high voltage transformers. Background Technology
[0002] In the operation of ultra-high voltage transformers, their insulation performance is of paramount importance. Ultra-high voltage transformers need to operate stably and continuously in high-voltage, strong electric field environments. Once insulation problems occur, they can easily lead to serious safety accidents, causing power supply interruptions and resulting in huge economic losses and social impacts.
[0003] Traditional insulation equalization measures for ultra-high voltage transformers have many drawbacks. In terms of connection, the connection between the insulation equalization components and the transformer in the past was relatively simple, relying only on ordinary screw connections. Under the continuous vibration generated by the operation of the transformer, the connection is very easy to loosen, causing the insulation equalization components to fail to function properly, which seriously affects the insulation performance and electric field distribution uniformity of the transformer.
[0004] To address the aforementioned issues, it is imperative to develop a robust ultra-high voltage transformer insulation equalization device. Against this backdrop, the ultra-high voltage transformer insulation equalization ball of this invention has emerged. Utility Model Content
[0005] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: an insulating equalizing ball for ultra-high voltage transformers, comprising: a mounting screw, an outer shell of which is provided, a fastening assembly inside the shell, sealing caps slidably connected to the upper and lower ends of the outer wall of the mounting screw, and mounting caps threadedly connected to the upper and lower ends of the outer wall of the mounting screw; the fastening assembly includes a drag ring, a tapered cylinder threadedly connected to the inner wall of the drag ring, an inclined ring on the outer side of the tapered cylinder, a groove on the inner wall of the tapered cylinder, a rotating rod rotatably connected to the inner wall of the groove, a locking block fixedly connected to the outer wall of the rotating rod, and a threaded groove at the top of the tapered cylinder.
[0006] Preferably, the outer wall of the drag ring is rotatably connected to the inner wall of the housing, the inner wall of the drag ring is threadedly connected to the outer wall of the threaded groove, and the outer wall of the inclined ring is fixedly connected to the inner wall of the housing. The housing is made of insulating material. Rotating the top drag ring causes the conical cylinder to move within the housing through its threaded connection with the conical cylinder. During this movement, the locking block contacts the inclined ring.
[0007] Preferably, the outer wall of the clamping block is slidably connected to the outer wall of the inclined ring, and the outer wall of the clamping block is threadedly connected to the outer wall of the mounting screw. As the conical cylinder continues to move, under the compression of the inclined ring, the clamping block rotates within the slot via the rotating rod until it contacts the mounting screw, thus clamping the mounting screw.
[0008] Preferably, a rubber plug is slidably connected to the outer wall of the mounting cap, the bottom end of the rubber plug is slidably connected to the outer wall of the drag ring, and the inner wall of the rubber plug is slidably connected to the outer wall of the mounting screw. The rubber plug is then fitted onto the mounting screw, with its bottom end contacting the drag ring. As the mounting cap is threaded, downward pressure is applied to the rubber, which not only secures the mounting screw to the housing but also, due to the friction of the rubber plug, makes the drag ring less prone to rotation.
[0009] Preferably, the upper and lower ends of the housing are provided with mounting grooves, a friction ring is fixedly connected to the outer wall of the sealing cover, and a sealing ring is fixedly connected to the inner wall of the sealing cover. The friction ring prevents the sealing cover from easily falling out of the mounting groove, and the contact between the sealing ring and the mounting screw prevents external contaminants from entering the interior of the housing.
[0010] Preferably, the outer wall of the friction ring is slidably connected to the inner wall of the mounting groove, the inner wall of the sealing cover is slidably connected to the inner wall of the mounting groove, and the outer wall of the sealing ring is slidably connected to the outer wall of the mounting screw.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. This utility model, by setting a fastening component, connects to the transformer via an installation screw and reinforces it with the fastening component. Rotating the top drag ring, based on its threaded connection with the conical cylinder, allows the conical cylinder to move within the housing. During this process, the clamping block contacts the inclined ring. Under the compression of the inclined ring, the clamping block rotates within the slot via the rotating rod and contacts the installation screw for clamping. This effectively prevents the housing from loosening due to vibration during transformer use, ensuring the stability of the connection between the insulating equalizing ball and the transformer, and improving the reliability of the overall structure.
[0013] 2. This utility model, by setting a rubber plug to fit onto the mounting screw and contacting the drag ring, not only achieves the fixation of the mounting screw to the housing, but also, thanks to the friction of the rubber plug, makes the drag ring less prone to rotation, further enhancing the fixing effect of the insulating equalizing ball after installation and ensuring its stability during operation. The sealing cover, through the friction ring, makes it less likely to fall off from the mounting groove. At the same time, the sealing ring, in contact with the mounting screw, can effectively prevent external contaminants from entering the housing, avoiding contamination of the internal structure, thereby ensuring the normal operation and insulation performance of the internal structure of the ultra-high voltage transformer insulating equalizing ball. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the fastening assembly of this utility model;
[0017] Figure 4 This is a schematic diagram of the conical cylinder of this utility model.
[0018] In the diagram: 1. Mounting screw; 2. Housing; 3. Fastening assembly; 31. Driving ring; 32. Conical cylinder; 33. Inclined ring; 34. Groove; 35. Rotating rod; 36. Locking block; 37. Threaded groove; 4. Sealing cap; 5. Mounting cap; 6. Rubber plug; 7. Mounting groove; 8. Friction ring; 9. Sealing ring. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.
[0020] Example:
[0021] Please see Figure 1 - Figure 4 The present invention provides a technical solution: an insulating equalizing ball for ultra-high voltage transformers, comprising: a mounting screw 1, a housing 2 provided on the outside of the mounting screw 1, characterized in that a fastening component 3 is provided inside the housing 2, a sealing cover 4 is slidably connected to the upper and lower ends of the outer wall of the mounting screw 1, and a mounting cap 5 is threadedly connected to the upper and lower ends of the outer wall of the mounting screw 1.
[0022] The fastening assembly 3 includes a drag ring 31, a tapered cylinder 32 is threadedly connected to the inner wall of the drag ring 31, an inclined ring 33 is provided on the outside of the tapered cylinder 32, a groove 34 is opened on the inner wall of the tapered cylinder 32, a rotating rod 35 is rotatably connected to the inner wall of the groove 34, a locking block 36 is fixedly connected to the outer wall of the rotating rod 35, and a threaded groove 37 is opened at the top of the tapered cylinder 32.
[0023] The outer wall of the drag ring 31 is rotatably connected to the inner wall of the housing 2, and the inner wall of the drag ring 31 is threadedly connected to the outer wall of the threaded groove 37. The outer wall of the inclined ring 33 is fixedly connected to the inner wall of the housing 2. Rotating the top drag ring 31 causes the conical cylinder 32 to move within the inner wall of the housing 2 through its threaded connection to the outer wall. During this movement, the outer wall of the locking block 36 contacts the outer wall of the inclined ring 33.
[0024] The outer wall of the locking block 36 is slidably connected to the outer wall of the inclined ring 33, and the outer wall of the locking block 36 is threadedly connected to the outer wall of the mounting screw 1. As the tapered cylinder 32 continues to move, under the compression of the inclined ring 33, the locking block 36 rotates in the slot 34 via the rotating rod 35 until it contacts the mounting screw 1 and clamps the mounting screw 1.
[0025] A rubber plug 6 is slidably connected to the outer wall of the mounting cap 5. The bottom end of the rubber plug 6 is slidably connected to the outer wall of the drag ring 31, and the inner wall of the rubber plug 6 is slidably connected to the outer wall of the mounting screw 1. The rubber plug 6 is fitted onto the outer wall of the mounting screw 1, so that its bottom outer wall contacts the outer wall of the drag ring 31. As the mounting cap 5 is threaded, downward pressure is applied to the rubber plug 6, which not only fixes the mounting screw 1 to the housing 2, but also makes the drag ring 31 less likely to rotate due to the friction of the rubber plug 6.
[0026] The upper and lower ends of the housing 2 are provided with mounting grooves 7, the outer wall of the sealing cover 4 is fixedly connected with a friction ring 8, and the inner wall of the sealing cover 4 is fixedly connected with a sealing ring 9.
[0027] The outer wall of the friction ring 8 is slidably connected to the inner wall of the mounting groove 7, the inner wall of the sealing cover 4 is slidably connected to the inner wall of the mounting groove 7, and the outer wall of the sealing ring 9 is slidably connected to the outer wall of the mounting screw 1.
[0028] Working principle:
[0029] In use, first connect the mounting screw 1 to the transformer, then put the housing 2 on the outside of the mounting screw 1. At this time, by fastening the assembly 3, rotate the top drag ring 31, and through the threaded connection with the threaded groove 37 at the top of the tapered cylinder 32, the tapered cylinder 32 moves inside the housing 2. During the movement, the locking block 36 contacts the inclined ring 33, and as the tapered cylinder 32 continues to move, under the pressure of the inclined ring 33, the locking block 36 rotates in the slot 34 through the rotating rod 35 until it contacts the mounting screw 1, clamping the mounting screw 1 to prevent the housing 2 from loosening due to vibration during the use of the transformer.
[0030] After fixing, the rubber plug 6 is fitted onto the mounting screw 1, so that its bottom end contacts the drag ring 31. As the mounting cap 5 is threaded, downward pressure is applied to the rubber plug 6, which not only fixes the mounting screw 1 to the housing 2, but also makes the drag ring 31 less likely to rotate due to the friction of the rubber plug 6. Finally, the sealing cover 4 is installed. The sealing cover 4 is prevented from falling out of the mounting groove 7 by the friction ring 8. The contact between the sealing ring 9 and the mounting screw 1 prevents external contaminants from entering the interior of the housing 2 and contaminating the internal structure.
[0031] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. Insulation equipotential bonding ball for ultra-high voltage transformers, including: The mounting screw (1) is provided with a housing (2) on its exterior. The housing (2) is characterized in that a fastening component (3) is provided inside the housing (2), a sealing cover (4) is slidably connected to the upper and lower ends of the outer wall of the mounting screw (1), and a mounting cap (5) is threadedly connected to the upper and lower ends of the outer wall of the mounting screw (1). The fastening assembly (3) includes a drag ring (31), the inner wall of which is threaded with a tapered cylinder (32), the outer side of which is provided with an inclined ring (33), the inner wall of which is provided with a groove (34), the inner wall of which is rotatably connected with a rotating rod (35), the outer wall of which is fixedly connected with a locking block (36), and the top end of which is provided with a threaded groove (37).
2. The ultra-high voltage transformer insulation equalization ball according to claim 1, characterized in that: The outer wall of the drag ring (31) is rotatably connected to the inner wall of the housing (2), the inner wall of the drag ring (31) is threadedly connected to the outer wall of the threaded groove (37), and the outer wall of the inclined ring (33) is fixedly connected to the inner wall of the housing (2).
3. The ultra-high voltage transformer insulation equalization ball according to claim 2, characterized in that: The outer wall of the card block (36) is slidably connected to the outer wall of the inclined ring (33), and the outer wall of the card block (36) is threadedly connected to the outer wall of the mounting screw (1).
4. The ultra-high voltage transformer insulation equalization ball according to claim 1, characterized in that: A rubber plug (6) is slidably connected to the outer wall of the mounting cap (5). The bottom end of the rubber plug (6) is slidably connected to the outer wall of the drag ring (31), and the inner wall of the rubber plug (6) is slidably connected to the outer wall of the mounting screw (1).
5. The ultra-high voltage transformer insulation equalization ball according to claim 1, characterized in that: The housing (2) has mounting grooves (7) at both the upper and lower ends. The outer wall of the sealing cover (4) is fixedly connected with a friction ring (8), and the inner wall of the sealing cover (4) is fixedly connected with a sealing ring (9).
6. The ultra-high voltage transformer insulation equalizing sphere according to claim 5, characterized in that: The outer wall of the friction ring (8) is slidably connected to the inner wall of the mounting groove (7), the inner wall of the sealing cover (4) is slidably connected to the inner wall of the mounting groove (7), and the outer wall of the sealing ring (9) is slidably connected to the outer wall of the mounting screw (1).