A protection device for GCB arc extinguishing chamber contact finger

Abstract

The application discloses a protection device for a GCB arc-extinguishing chamber contact finger, which comprises a shielding structure, the shielding structure comprises two end heads, the bottom of the end head is provided with a matching groove matched with the contact finger part, and the two groups of end heads are connected through a shielding sleeve. By adopting the structure, the shielding surface is more fitted, the hollow area of the contact finger part is not occupied, hoisting and transferring are facilitated, a plurality of groups are matched for use, and free partition shielding protection is realized, the device is more suitable for being matched with a hoisting tool, the overall structure of the device is simple, the shielding protection effect is good, and damage caused by scratching, knocking and small-size slag collision can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic engineering equipment technology, and in particular to a protective device for the contact finger of a GCB arc-extinguishing chamber. Background Technology

[0002] In the daily operation and maintenance of power plants in river basins, the GCB (Generator Circuit Breaker) is a key piece of equipment, and its stable operation directly affects the power plant's power generation efficiency and safety. However, the overhaul of GCB equipment currently faces significant challenges. Due to the lack of tooling and equipment specifically designed for the maintenance process, the maintenance cycle of GCBs is greatly extended, and the maintenance efficiency remains at a low level. Crucially, there are currently no effective protective measures for the transport of GCB arc-extinguishing chambers. The only methods to protect the contact fingers are large shielding components completely covering or wrapping them, which makes installation difficult with hoisting equipment or securing the lifting position. The contact fingers of the arc-extinguishing chamber have a delicate and fragile structure, making them highly susceptible to damage during transport from external impacts, friction, or other unexpected factors. This damage not only affects the normal performance of the arc-extinguishing chamber but can also lead to equipment failure, further increasing maintenance costs and time, and posing a serious threat to the stable operation of the power plant. Therefore, developing a device that can effectively protect the contact fingers of GCB arc-extinguishing chambers is an urgent need to solve the current maintenance and transportation challenges. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a protective device for the contact finger of a GCB arc-extinguishing chamber. Unlike the traditional method of full coverage, the shielding surface fits more closely and does not occupy the hollow area of ​​the contact finger, making it convenient for hoisting and transportation. Multiple sets can be used together to freely partition the shielding protection, making it more suitable for use with hoisting equipment. The overall structure of the device is simple, and the shielding protection effect is good, which can effectively avoid damage caused by scratches, bumps and collisions with small-sized debris. To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a protective device for the contact finger of a GCB arc-extinguishing chamber, including a shielding structure. The shielding structure includes two ends, and the bottom of the ends is provided with a fitting groove that mates with the contact finger. The two sets of ends are connected by a shielding sleeve.

[0004] In a preferred embodiment, the end cap is provided with a fixing lug, and the fixing lug is provided with a fastening bolt.

[0005] In a preferred embodiment, the mounting groove has multiple sets of ball bearing structures on the side that contacts the top of the finger portion.

[0006] In a preferred embodiment, the mounting groove matches the curvature of the finger portion, and the gap between the two sides of the mounting groove and the inner and outer ring surfaces of the finger portion does not exceed ten centimeters.

[0007] In a preferred embodiment, a sponge pad is installed on the inner wall adjacent to the inner and outer ring surfaces of the fitting groove and the finger portion.

[0008] In a preferred embodiment, the shielding cover is made of flexible fabric. In a preferred embodiment, the shielding sleeve is made of plastic material and has multiple sets of folding parts for telescopic extension.

[0009] In a preferred embodiment, the shielding structure can be used alone or multiple shielding structures can be connected and used in combination.

[0010] In a preferred embodiment, the end is made of plastic material, and magnetic adsorption components for adsorption and fixation are installed on the mating surfaces between adjacent ends.

[0011] In a preferred embodiment, the end is made of metal.

[0012] The protective device for the contact finger of a GCB arc-extinguishing chamber provided by this utility model has the following beneficial effects by adopting the above-described structure: (1) Unlike the traditional method of full coverage and shielding, the shielding surface fits more closely and does not need to occupy the hollow area of ​​the touch part, making it convenient for hoisting and transportation; (2) Multiple sets can be used together to freely partition and shield the protection, making it more suitable for use with hoisting equipment; (3) The device has a simple overall structure and good shielding and protection effect, which can effectively avoid damage caused by scratches, bumps and collisions of small-sized debris. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure and assembly of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the overall structure and assembly of this utility model.

[0016] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of the finger part of this utility model in its installed state.

[0018] In the diagram: 1. End cap; 2. Fixing lug; 3. Fastening bolt; 4. Covering sleeve; 5. Ball bearing structure; 6. Mounting groove. Detailed Implementation

[0019] Example 1: like Figure 1-5 A protective device for the contact finger of a GCB arc-extinguishing chamber includes a shielding structure specifically designed to protect the contact finger portion of the GCB arc-extinguishing chamber from external damage during transportation and maintenance. The shielding structure includes two ends 1, which serve as end support components that engage with both ends of the contact finger for positioning and fixation. The bottom of each end 1 has a fitting groove 6 that conforms to the shape of the contact finger, ensuring stable mounting. The two sets of ends 1 are connected by a shielding sleeve 4, which covers the outside of the contact finger, forming a comprehensive protective barrier to prevent direct contact between external objects and the contact finger. like Figure 1 and 2 In a preferred embodiment, the end 1 is provided with a fixing ear 2, which extends from the side of the end 1 and provides a force-bearing point for fixing the end 1. The fixing ear 2 is provided with a fastening bolt 3, which can pass through the fixing ear 2 and connect to the component where the contact finger is located, thereby firmly fixing the end 1 and preventing loosening during transportation or use. like Figure 3 In the preferred embodiment, the mounting groove 6 is provided with multiple sets of ball bearing structures 5 on the side that contacts the top of the finger portion. The ball bearing structures 5 can reduce the friction between the mounting groove 6 and the finger portion, making the installation and removal of the shielding structure smoother and avoiding damage to the finger due to friction. At the same time, the ball bearing structures 5 can wrap a flexible sleeve to further reduce the possibility of damage to the finger portion. like Figure 1-4 In the preferred embodiment, the mounting groove 6 is curved to match the finger portion, and the gap between the two inner sides of the mounting groove 6 and the inner and outer ring surfaces of the finger portion is controlled within a small range. This design can ensure that the mounting groove 6 fits tightly with the finger portion, improve the stability of the end 1 installation, and at the same time prevent the finger from being squeezed and damaged due to the small gap. like Figure 1-4 In the preferred embodiment, a sponge pad is installed on the inner wall of the fitting groove 6 adjacent to the inner and outer ring surfaces of the finger portion. The sponge pad has good elasticity and cushioning performance, which can further reduce the collision and friction between the fitting groove 6 and the finger, and provide better protection for the finger. like Figure 1-4 In the preferred embodiment, the shielding sleeve 4 is made of flexible fabric. Flexible fabric has good flexibility and extensibility, which can adapt to the shape changes of the finger part. At the same time, it is soft and will not cause hard damage to the finger. It is also lightweight and will not add too much load. like Figure 1-4In the preferred embodiment, the shielding sleeve 4 is made of plastic material, which has a certain degree of hardness and wear resistance, and can provide more solid protection for the finger. The shielding sleeve 4 is provided with multiple sets of folding parts for extension and retraction, which allow the shielding sleeve 4 to be extended and retracted according to the length of the finger, thereby improving the applicability of the protective device. like Figure 1-4 In the preferred embodiment, the shielding structure can be used alone to meet the protection requirements of a single finger; or multiple shielding structures can be connected and used together to form continuous protection for multiple fingers or longer finger parts through the connection between the ends 1, thus expanding the protection range. like Figure 1-4 In the preferred embodiment, the end 1 is made of plastic material, which has good insulation and corrosion resistance and can adapt to the environment around the arc-extinguishing chamber. Magnetic suction components for adsorption and fixation are installed on the mating surfaces between adjacent end 1. The magnetic suction components make it more convenient and faster to connect multiple sets of shielding structures, thus improving assembly efficiency.

[0020] like Figure 1-4 In the preferred embodiment, the end 1 is made of metal material, which has high strength and rigidity, and can provide more stable support for the shielding structure. It is suitable for use in scenarios with high strength requirements, ensuring the overall stability of the protective device.

[0021] Example 2: like Figure 1-5 In this invention, the working principle is as follows: First, the two ends 1 are installed with the touch finger part through the mounting groove 6 at the bottom. The mounting groove 6 matches the curvature of the touch finger to ensure that the ends 1 can be stably attached to both ends of the touch finger, thus playing a positioning role. Next, using the fastening bolts 3 on the fixing ears 2 on end 1, end 1 is firmly fixed to the component where the contact finger is located, preventing the device from loosening or shifting during transportation or maintenance. At this time, the shielding sleeves 4 between the two sets of end 1 will naturally unfold, covering the outside of the contact finger to form a protective barrier, preventing external objects from directly contacting the contact finger. When the device needs to be installed or removed, the ball bearing structure 5 on the mounting groove 6 reduces friction with the top of the contact finger, making operation easier and preventing friction damage to the contact finger. If the contact finger is long or multiple contact fingers need to be protected, multiple sets of shielding structures can be connected to each other by magnetic attraction between the ends 1, allowing the shielding sleeve 4 to continuously cover and expand the protection range. The flexible fabric cover 4 can deform flexibly to conform to the shape of the contact finger, while the plastic cover 4 with folds can extend and retract according to the length of the contact finger, ensuring comprehensive coverage. The sponge pad inside the mounting groove 6 acts as a buffer when the contact finger is subjected to minor impacts, further reducing the risk of damage, thus continuously protecting the contact finger throughout the entire transportation and maintenance process.

[0022] The beneficial effects of this utility model are as follows: Unlike the traditional method of full coverage and shielding, the shielding surface fits more closely and does not occupy the hollow area of ​​the touch part, making it convenient for hoisting and transportation; multiple sets can be used together to freely partition the shielding protection, making it more suitable for use with hoisting tools; the overall structure of the device is simple, the shielding protection effect is good, and it can effectively avoid damage caused by scratches, bumps and collisions with small-sized debris.

Claims

1. A protective device for the contact finger of a GCB arc-extinguishing chamber, comprising a shielding structure, characterized in that: The shielding structure includes two ends (1), and the bottom of the ends (1) is provided with a fitting groove (6) that mates with the finger part. The two sets of ends (1) are connected by a shielding sleeve (4).

2. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The end (1) is provided with a fixing ear (2), and the fixing ear (2) is provided with a fastening bolt (3).

3. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The mounting groove (6) is provided with multiple sets of ball bearing structures (5) on the side that contacts the top of the finger part.

4. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The mounting groove (6) is aligned with the arc of the finger part, and the gap between the two sides of the mounting groove (6) and the inner and outer ring surfaces of the finger part does not exceed ten centimeters.

5. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: A sponge pad is installed on the inner wall of the fitting groove (6) adjacent to the inner and outer ring surfaces of the finger part.

6. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The shielding sleeve (4) is made of flexible fabric.

7. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The shielding sleeve (4) is made of plastic material and has multiple sets of folding parts for telescopic extension.

8. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The aforementioned shielding structure can be used individually or in combination with other shielding structures.

9. The protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The end (1) is made of plastic material, and magnetic suction components for adsorption and fixation are installed on the mating surface between adjacent ends (1).

10. A protective device for the contact finger of a GCB arc-extinguishing chamber according to claim 1, characterized in that: The end (1) is made of metal.

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