Compact embedded grading ball for GIS equipment

Abstract

This utility model discloses a compact embedded equalizing ball for GIS equipment. This utility model relates to the field of power system operation and maintenance technology. The utility model includes: an equalizing ball, which is hollow, and a sealing device fixedly connected to its outer wall; through the cooperation of the sealing device and the locking device, the equalizing ball is hollow, and the sealing device fixedly connected to the outer wall achieves a good sealing effect. The connecting pipe in the sealing device is rotatably connected to the connecting ring, and with the rubber ring nested in the inner wall, the rubber ring is always in close contact with the inner wall of the connecting pipe during rotation, effectively preventing leakage of insulating gas inside the GIS equipment and ensuring stable internal pressure. The locking device locks by rotation, wherein the design of the retaining ring and the locking buckle sidewalls being inclined and parallel allows for quick engagement of the retaining ring and the locking buckle simply by rotating the connecting ring and the connecting pipe relative to each other during installation.

Description

Technical Field

[0001] This utility model relates to the field of power system operation and maintenance technology, specifically a compact embedded equalizing ball for GIS equipment. Background Technology

[0002] In modern power systems, GIS (Gas Insulated Metal Enclosed Switchgear) is widely used in high-voltage and ultra-high-voltage power transmission and distribution fields due to its advantages such as small footprint, high reliability, and long maintenance cycle.

[0003] Traditional connection methods often employ bolt tightening, requiring individual bolt tightening during installation, which is time-consuming and labor-intensive. Furthermore, the tightness of the bolts is difficult to control precisely, easily leading to uneven sealing. Disassembling the equalizing ball during equipment maintenance or repair also consumes significant time and manpower, reducing equipment operation and maintenance efficiency. In addition, existing equalizing ball locking structures lack stability under vibrations generated during GIS equipment operation, potentially loosening and affecting the equalizing effect of the ball and the overall safety of the equipment. In practical applications, the sealing performance of the equalizing ball directly affects the stability of the insulating gas inside the GIS equipment; traditional sealing structures are prone to gas leakage. Gas leakage not only leads to a decrease in the equipment's insulation performance, increasing the risk of partial discharge or even insulation breakdown, but also has a certain impact on the environment. Frequent gas replenishment also increases operation and maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a compact embedded pressure equalizing ball for GIS equipment, which solves the problems of poor sealing, difficult installation and disassembly, and unstable locking of traditional pressure equalizing balls.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a compact embedded pressure equalization ball for GIS equipment, comprising: a pressure equalization ball, the pressure equalization ball being hollow, a sealing device fixedly connected to the outer wall of the pressure equalization ball, a locking device fixedly connected to the outer wall of the sealing device, the locking device being locked by rotation, the sealing device including a connecting pipe, a connecting ring rotatably connected to the outer wall of the connecting pipe, a rubber ring nested in the inner wall of the connecting ring, and a locking device fixedly connected to the outer walls of the connecting pipe and the connecting ring. The pressure equalization ball being hollow, and the sealing device fixedly connected to the outer wall, achieves a good sealing effect.

[0008] Preferably, the end of the connecting pipe away from the connecting ring is fixedly connected to the outer wall of the equalizing sphere, the outer wall of the rubber ring is in contact with the inner wall of the connecting pipe, and the connecting pipe in the sealing device is rotatably connected to the connecting ring. With the rubber ring nested in the inner wall, the rubber ring is always in close contact with the inner wall of the connecting pipe during rotation, effectively preventing the leakage of insulating gas inside the GIS equipment, ensuring stable internal pressure, maintaining the excellent performance of the insulating gas, and avoiding faults such as discharge caused by the decrease in insulation performance due to gas leakage.

[0009] Preferably, the locking device includes a retaining ring, and a locking buckle is slidably connected to the outer wall of the retaining ring. The side walls of the retaining ring and the locking buckle are both inclined and parallel. The locking device locks by rotation. The design of the retaining ring and the locking buckle being inclined and parallel allows for quick engagement of the retaining ring and the locking buckle by simply rotating the connecting ring and the connecting pipe relative to each other during installation.

[0010] Preferably, the outer wall of the retaining ring is fixedly connected to the outer wall of the connecting ring, and the outer wall of the locking buckle is fixedly connected to the outer wall of the connecting pipe. The outer walls of the retaining ring and the locking buckle are arranged in a circumferential array along the central axis of the connecting pipe and the connecting ring. This structural design can provide a uniform and stable locking force, ensuring that the equalizing ball will not loosen due to vibration or other factors during the operation of the GIS equipment, and ensuring a stable connection between the equalizing ball and the equipment.

[0011] Preferably, a compression spring is fixedly connected to the inner wall of the latch, a lever is fixedly connected to the end of the compression spring away from the latch, and a pin is fixedly connected to the end of the lever away from the compression spring. When disassembling, the latch is moved to compress the spring, causing the pin to slide out from the inner wall of the connecting ring, thereby releasing the lock. The operation is simple and convenient, greatly improving the installation and maintenance efficiency of the equalizing ball.

[0012] Preferably, the outer wall of the paddle is slidably connected to the inner wall of the latch via a groove, and the groove is symmetrically formed in the wall of the latch; the outer wall of the pin is slidably connected to the inner wall of the connecting ring.

[0013] Beneficial effects

[0014] This invention provides a compact embedded equalizing ball for GIS equipment. It has the following advantages:

[0015] This utility model, through the combination of a sealing device and a locking device, makes the equalizing sphere hollow. The sealing device, fixedly connected to the outer wall, achieves a good sealing effect. The connecting pipe and connecting ring in the sealing device are rotatably connected. With the rubber ring nested in the inner wall, the rubber ring is always in close contact with the inner wall of the connecting pipe during rotation, effectively preventing the leakage of insulating gas inside the GIS equipment and ensuring stable internal pressure. The locking device locks by rotation. The design of the retaining ring and the locking buckle sidewall is inclined and parallel, which allows for quick engagement of the retaining ring and the locking buckle by simply rotating the connecting ring and the connecting pipe relative to each other during installation. During disassembly, the locking is released by moving the lever to compress the spring, causing the pin to slide out from the inner wall of the connecting ring. The operation is simple and convenient, greatly improving the installation and maintenance efficiency of the equalizing sphere. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the sealing device of this utility model;

[0019] Figure 4 This is a schematic diagram of the locking device of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the latch of this utility model.

[0021] In the diagram: 1. Equalizing sphere; 2. Sealing device; 20. Connecting pipe; 21. Connecting ring; 22. Rubber ring; 3. Locking device; 30. Snap ring; 31. Lock; 32. Compression spring; 33. Paddle; 34. Pin. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] Please see Figure 1-5 This utility model provides a technical solution: a compact embedded equalizing ball for GIS equipment, comprising:

[0025] The pressure equalizing sphere 1 is hollow. A sealing device 2 is fixedly connected to the outer wall of the pressure equalizing sphere 1. A locking device 3 is fixedly connected to the outer wall of the sealing device 2. The locking device 3 is locked by rotation. The pressure equalizing sphere 1 is fixed to the GIS equipment through the sealing device 2 and the locking device 3.

[0026] The sealing device 2 includes a connecting pipe 20, with a connecting ring 21 rotatably connected to the outer wall of the connecting pipe 20. A rubber ring 22 is nested inside the inner wall of the connecting ring 21. A locking device 3 is fixedly connected to the outer walls of the connecting pipe 20 and the connecting ring 21. The end of the connecting pipe 20 away from the connecting ring 21 is fixedly connected to the outer wall of the equalizing sphere 1. The outer wall of the rubber ring 22 contacts the inner wall of the connecting pipe 20. When the equalizing sphere 1 is installed on the GIS equipment, the connecting ring 21 of the sealing device 2 aligns with the equipment interface. By rotating the equalizing sphere 1, the rubber ring 22 nested inside the inner wall fits tightly against the inner wall of the connecting pipe 20, forming the first sealing barrier.

[0027] The locking device 3 includes a retaining ring 30, and a latch 31 is slidably connected to the outer wall of the retaining ring 30. The side walls of the retaining ring 30 and the latch 31 are both inclined and parallel. The outer wall of the retaining ring 30 is fixedly connected to the outer wall of the connecting ring 21, and the outer wall of the latch 31 is fixedly connected to the outer wall of the connecting pipe 20. The outer walls of the retaining ring 30 and the latch 31 are arranged in a circumferential array along the central axis of the connecting pipe 20 and the connecting ring 21. As the connecting ring 21 rotates, the inclined surfaces of the retaining ring 30 and the latch 31 of the locking device 3 slide against each other, generating axial pressure to further compress the rubber ring 22, enhance the sealing effect, and prevent leakage of insulating gas. As the connecting ring 21 continues to rotate, the retaining ring 30 pushes the latch 31 to slide axially, compressing the spring 32 to accumulate elastic potential energy.

[0028] A compression spring 32 is fixedly connected to the inner wall of the latch 31. A lever 33 is fixedly connected to the end of the compression spring 32 away from the latch 31. A pin 34 is fixedly connected to the end of the lever 33 away from the compression spring 32. The outer wall of the lever 33 is slidably connected to the inner wall of the latch 31 through a groove, and the groove is symmetrically opened in the wall of the latch 31. The outer wall of the pin 34 is slidably connected to the inner wall of the connecting ring 21. When the retaining ring 30 is fully engaged with the inclined surface of the latch 31, the spring releases energy to push the lever 33, so that the pin 34 is inserted into the positioning hole in the inner wall of the connecting ring 21, thus completing the mechanical locking. The multiple sets of retaining rings 30 and latches 31 distributed in a circumferential array ensure that the locking force is evenly distributed to prevent vibration from causing loosening. During maintenance, the lever 33 is manually moved to compress the spring 32, so that the pin 34 is disengaged from the connecting ring 21. By rotating the connecting ring 21 in the opposite direction, the inclined surfaces of the retaining ring 30 and the locking buckle 31 slide relative to each other, releasing the axial pressure, and the pressure equalizing ball can be quickly disassembled for convenient maintenance.

[0029] During use, the equalizing sphere 1 is fixed to the GIS equipment using the sealing device 2 and the locking device 3;

[0030] The hollow equalizing sphere 1 improves the electric field distribution inside the GIS equipment through its smooth outer surface, eliminates the electric field concentration points on the electrode surface, and when the high voltage current passes through the conductors around the equalizing sphere, an equipotential surface is formed on the surface of the sphere, so that the electric field lines are evenly distributed and the risk of partial discharge is reduced.

[0031] When the equalizing sphere 1 is installed on the GIS equipment, the connecting ring 21 of the sealing device 2 is connected to the equipment interface. By rotating the equalizing sphere 1, the rubber ring 22 nested on the inner wall fits tightly against the inner wall of the connecting pipe 20, forming the first sealing barrier;

[0032] As the connecting ring 21 rotates, the retaining ring 30 of the locking device 3 slides against the inclined surface of the latch 31, generating axial pressure to further compress the rubber ring 22, enhancing the sealing effect and preventing leakage of insulating gas. As the connecting ring 21 continues to rotate, the retaining ring 30 pushes the latch 31 to slide axially, compressing the spring 32 to accumulate elastic potential energy.

[0033] When the retaining ring 30 and the inclined surface of the latch 31 are fully engaged, the spring releases energy to push the lever 33, causing the pin 34 to be inserted into the positioning hole on the inner wall of the connecting ring 21, thus completing the mechanical locking. The multiple sets of retaining rings 30 and latches 31 distributed in a circumferential array ensure that the locking force is evenly distributed, preventing vibration from causing loosening.

[0034] During maintenance, manually move the lever 33 to compress the spring 32, causing the pin 34 to disengage from the connecting ring 21. Rotate the connecting ring 21 in the opposite direction, and the retaining ring 30 and the inclined surface of the locking buckle 31 will slide relative to each other, releasing the axial pressure. This allows for quick disassembly of the equalizing ball and convenient maintenance.

[0035] 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 the element.

[0036] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compact embedded equalizing sphere for GIS equipment, comprising: The pressure-equalizing sphere (1) is characterized by: The equalizing sphere (1) is hollow. A sealing device (2) is fixedly connected to the outer wall of the equalizing sphere (1). A locking device (3) is fixedly connected to the outer wall of the sealing device (2). The locking device (3) is locked by rotation. The sealing device (2) includes a connecting pipe (20), a connecting ring (21) is rotatably connected to the outer wall of the connecting pipe (20), a rubber ring (22) is nested in the inner wall of the connecting ring (21), and a locking device (3) is fixedly connected to the outer walls of the connecting pipe (20) and the connecting ring (21).

2. The compact embedded equalizing sphere for GIS equipment according to claim 1, characterized in that: The end of the connecting tube (20) away from the connecting ring (21) is fixedly connected to the outer wall of the equalizing ball (1), and the outer wall of the rubber ring (22) is in contact with the inner wall of the connecting tube (20).

3. The compact embedded equalizing sphere for GIS equipment according to claim 1, characterized in that: The locking device (3) includes a retaining ring (30), and a latch (31) is slidably connected to the outer wall of the retaining ring (30). The side walls of the retaining ring (30) and the latch (31) are both inclined and parallel.

4. A compact embedded equalizing sphere for GIS equipment according to claim 3, characterized in that: The outer wall of the retaining ring (30) is fixedly connected to the outer wall of the connecting ring (21), and the outer wall of the latch (31) is fixedly connected to the outer wall of the connecting tube (20). The outer walls of the retaining ring (30) and the latch (31) are arranged in a circular array along the central axis of the connecting tube (20) and the connecting ring (21).

5. A compact embedded equalizing sphere for GIS equipment according to claim 3, characterized in that: A compression spring (32) is fixedly connected to the inner wall of the latch (31). A lever (33) is fixedly connected to the end of the compression spring (32) away from the latch (31). A pin (34) is fixedly connected to the end of the lever (33) away from the compression spring (32).

6. A compact embedded equalizing sphere for GIS equipment according to claim 5, characterized in that: The outer wall of the paddle (33) is slidably connected to the inner wall of the latch (31) through a groove, and the groove is symmetrically opened in the wall of the latch (31). The outer wall of the pin (34) is slidably connected to the inner wall of the connecting ring (21).

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