A pole-mounted circuit breaker

Abstract

This utility model discloses a pole-mounted circuit breaker, including a base, poles, and connecting terminals, and further comprising a terminal post, a retaining ring, a corrosion-resistant cover, and a hot-melt adhesive sleeve. The terminal post is fixed to the top of the pole, and the connecting terminal passes through its interior to form a wiring terminal. One end of the terminal post has an external thread section. One end of the retaining ring is rotatably engaged with the corrosion-resistant cover, and the other end has an internal thread connecting to the external thread section. The corrosion-resistant cover and the hot-melt adhesive sleeve are heat-sealed. Its advantages lie in reducing exposure risks through the integrated wiring terminal via the terminal post, facilitating the installation and replacement of protective components through the threaded connection of the retaining ring, and isolating the wiring terminal from external environmental corrosion through the protective structure formed by the corrosion-resistant cover and the hot-melt adhesive sleeve, thus reducing energy consumption, ensuring stable circuit operation. Furthermore, its simple structure makes it easy to promote and has significant economic and social benefits.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a pole-mounted circuit breaker. Background Technology

[0002] In power systems, pole-mounted circuit breakers (PBRs) are critical control and protection devices widely used in distribution networks, undertaking important tasks such as breaking and closing load currents and short-circuit currents. However, in actual use, the connection terminals of existing PBRs are typically directly exposed to the external environment for circuit connections. Due to long-term exposure to rainwater erosion, wind and sand erosion, and corrosive gases in the atmosphere, the connection terminals are highly susceptible to rapid corrosion. Corrosion of the connection terminals not only increases contact resistance, thereby increasing energy loss, but may also cause overheating and even serious faults such as poor circuit contact and open circuits, greatly affecting the safe and stable operation of the power system, increasing maintenance costs, and increasing the risk of power supply interruptions. Therefore, how to effectively protect the connection terminals of pole-mounted circuit breakers from external environmental corrosion has become an urgent technical problem to be solved in this field. Utility Model Content

[0003] To address the shortcomings of the prior art, this utility model provides a pole-mounted circuit breaker.

[0004] The technical solution adopted by this utility model is: a pole-mounted circuit breaker, including a base, poles fixed at intervals on the base and connecting terminals on the poles, and also including terminal posts, fixing rings, anti-corrosion covers and hot melt adhesive sleeves;

[0005] The terminal post is fixed to the top of the pole post, the connecting terminal passes through the terminal post and partially extends out as a wiring terminal, and an external thread section is provided on one end of the terminal post;

[0006] One end of the fixing ring is rotatably engaged with the anti-corrosion cover, and the other end is provided with an internal thread that is threaded to the external thread section.

[0007] The anti-corrosion cover is heat-sealed to the hot melt adhesive sleeve.

[0008] Furthermore, a first limiting ring is provided on the end of the fixing ring that is connected to the anti-corrosion cover, and a second limiting ring is provided on the end of the anti-corrosion cover that is connected to the fixing ring. A sealing groove is provided on the opposite end face of the first limiting ring and the second limiting ring, and a sealing ring is installed in the sealing groove.

[0009] Furthermore, the anti-corrosion cover includes a first connecting sleeve, a second connecting sleeve, and a corrugated pipe disposed between the first connecting sleeve and the second connecting sleeve.

[0010] Furthermore, the terminal post has an "L" shaped structure and is fixed to the top of the pole post by the bottom flange and fastening bolts.

[0011] Furthermore, the corrugated pipe is made of irradiated cross-linked polyethylene material, and its axial extension stroke is ≥20mm.

[0012] Furthermore, the outer wall of the anti-corrosion cover is coated with a nano-titanium dioxide photocatalytic coating with a thickness of 0.02-0.05 mm.

[0013] The beneficial effects of this utility model are as follows: By setting a terminal post at the top of the pole and having the connecting terminal pass through the terminal post, the wiring terminal is effectively integrated internally, reducing the risk of direct exposure. The threaded connection between the fixing ring and the terminal post not only allows for quick and secure installation of the anti-corrosion cover and hot melt adhesive sleeve at the wiring terminal, but also facilitates disassembly and replacement by personnel when components are damaged or aged, reducing maintenance difficulty and time costs. The protective structure formed by the heat-sealed connection of the anti-corrosion cover and the hot melt adhesive sleeve can tightly wrap the wiring terminal, effectively isolating it from external environmental factors such as rainwater, sand, and corrosive gases, significantly slowing down the corrosion rate of the wiring terminal, reducing the possibility of increased contact resistance, thereby reducing energy loss, avoiding circuit failures caused by overheating of the connection terminal, and ensuring the safe and stable operation of the power system. In addition, this structural design is simple and reasonable, requiring no large-scale modification of existing pole-mounted circuit breakers, facilitating widespread application, and bringing significant economic and social benefits to the maintenance and operation of power equipment.

[0014] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

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

[0017] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0018] Figure 3 This is a cross-sectional schematic diagram of the retaining ring, the anti-corrosion cover, and the hot melt adhesive sleeve.

[0019] Figure 1-3 In the middle: 1. Base; 2. Pole post; 3. Connecting terminal; 4. Terminal post; 5. Fixing ring; 6. Anti-corrosion cover; 7. Hot melt adhesive sleeve; 8. Wiring terminal; 9. External thread section; 10. Internal thread; 11. First limiting ring; 12. Second limiting ring; 13. Sealing groove; 14. Sealing ring; 15. First connecting sleeve; 16. Second connecting sleeve; 17. Bellows; 18. Flange; 19. Fastening bolt. Detailed Implementation

[0020] 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.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] This utility model provides a pole-mounted circuit breaker.

[0023] In this embodiment, refer to Figure 1-3 The pole-mounted circuit breaker includes a base 1, pole posts 2 fixed at intervals on the base 1, and connecting terminals 3 on the pole posts 2. It also includes terminal posts 4, fixing rings 5, anti-corrosion covers 6, and hot melt adhesive sleeves 7.

[0024] The terminal post is fixed to the top of the pole post, and the connecting terminal passes through the terminal post and extends out partially as a wiring terminal 8. An external thread section 9 is provided on one end of the terminal post.

[0025] One end of the fixed ring is rotatably engaged with the anti-corrosion cover, and the other end is provided with an internal thread 10 that is threadedly connected to the external thread section.

[0026] The anti-corrosion cover is heat-sealed to the hot melt adhesive sleeve.

[0027] In the above technical solution, based on the traditional pole-mounted circuit breaker base, pole, and connecting terminal, a terminal post, a retaining ring, a corrosion-resistant cover, and a hot melt adhesive sleeve are added. The terminal post is fixed to the top of the pole and provides an internal passage for the connecting terminal (i.e., the connecting terminal is directly set along the center of the terminal post and passes through), so that the wiring terminal is hidden inside; the retaining ring is screwed to the external thread section of the terminal post through its internal thread, realizing the installation of the retaining ring, corrosion-resistant cover, and hot melt adhesive sleeve with the terminal post.

[0028] The fixing ring, anti-corrosion cover and hot melt adhesive sleeve can isolate the terminal from the external environment, effectively avoiding erosion by rain, wind and sand, and reducing the risk of terminal corrosion; the threaded connection method facilitates quick installation and disassembly, and when the protective components are damaged, the staff can quickly replace them, improving maintenance efficiency; the hot melt adhesive sleeve and anti-corrosion cover are tightly combined to ensure the sealing of the protective structure, reduce energy loss and ensure stable circuit operation.

[0029] In practical use, when connecting the terminal block to the external wire, the retaining ring, anti-corrosion cover and hot melt adhesive sleeve are put onto the terminal block and the external wire. After the terminal block and the external wire are connected, the retaining ring is connected to the external thread section. At the same time, the hot melt adhesive sleeve is heat-sealed to the retaining ring and the wire using a hot air blower or other devices to improve the sealing effect.

[0030] Specifically, a first limiting ring 11 is provided on one end of the fixed ring connected to the anti-corrosion cover, and a second limiting ring 12 is provided on one end of the anti-corrosion cover connected to the fixed ring. A sealing groove 13 is provided on the opposite end faces of the first limiting ring 11 and the second limiting ring 12, and a sealing ring 14 is installed in the sealing groove 13.

[0031] In this embodiment, a first limiting ring and a second limiting ring are provided at the connection between the fixing ring and the anti-corrosion cover. The adjacent end faces of the two rings are provided with sealing grooves. By installing a sealing ring in the sealing groove, the elastic deformation of the sealing ring is used to fill the gap between the fixing ring and the anti-corrosion cover, thereby enhancing the sealing performance of the connection.

[0032] Specifically, the anti-corrosion cover includes a first connecting sleeve 15, a second connecting sleeve 16, and a corrugated pipe 17 disposed between the first connecting sleeve 15 and the second connecting sleeve 16.

[0033] In this embodiment, the corrosion-resistant cover adopts a structure composed of a first connecting sleeve, a second connecting sleeve, and a bellows. The bellows possesses excellent flexibility and extensibility. During the operation of the pole-mounted circuit breaker, when affected by external environmental changes or mechanical vibrations, the bellows can undergo axial expansion and contraction deformation, buffering stress. Furthermore, utilizing the bellows' expansion and contraction characteristics, it can adapt to the wiring requirements of different operating conditions; for example, when the length at the terminal block needs to be increased, it can effectively serve as a cover.

[0034] Specifically, the terminal post has an "L" shaped structure and is fixed to the top of the pole post by the bottom flange 18 and fastening bolts 19.

[0035] In this embodiment, the terminal post is designed as an "L" shape and fixed to the top of the pole post by a bottom flange and fastening bolts. The "L" shape changes the orientation of the connection terminal, making the wiring terminal layout more reasonable.

[0036] Specifically, the corrugated pipe is made of irradiated cross-linked polyethylene material, and its axial extension stroke is ≥20mm.

[0037] In this embodiment, the corrugated pipe is made of irradiated cross-linked polyethylene material, which has high strength, aging resistance and good flexibility after being treated by irradiation cross-linking process.

[0038] Specifically, the outer wall of the anti-corrosion cover is coated with a nano-titanium dioxide photocatalytic coating with a thickness of 0.02-0.05 mm.

[0039] In this embodiment, a nano-titanium dioxide photocatalytic coating is applied to the outer wall of the anti-corrosion cover. The nano-titanium dioxide can generate a photocatalytic reaction under light conditions, decomposing organic pollutants, dust, etc. attached to the surface of the coating. At the same time, it has superhydrophilicity, allowing stains to slide off with the water film.

[0040] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A pole-mounted circuit breaker, comprising a base, poles fixedly spaced on the base, and connecting terminals on the poles, characterized in that: It also includes terminal posts, retaining rings, corrosion-resistant covers, and hot melt adhesive sleeves; The terminal post is fixed to the top of the pole post, the connecting terminal passes through the terminal post and partially extends out as a wiring terminal, and an external thread section is provided on one end of the terminal post; One end of the fixing ring is rotatably engaged with the anti-corrosion cover, and the other end is provided with an internal thread that is threaded to the external thread section. The anti-corrosion cover is heat-sealed to the hot melt adhesive sleeve.

2. The pole-mounted circuit breaker according to claim 1, characterized in that: A first limiting ring is provided on one end of the fixed ring that is connected to the anti-corrosion cover, and a second limiting ring is provided on one end of the anti-corrosion cover that is connected to the fixed ring. A sealing groove is provided on the opposite end face of the first limiting ring and the second limiting ring, and a sealing ring is installed in the sealing groove.

3. The pole-mounted circuit breaker according to claim 1 or 2, characterized in that: The corrosion-resistant cover includes a first connecting sleeve, a second connecting sleeve, and a corrugated pipe disposed between the first connecting sleeve and the second connecting sleeve.

4. The pole-mounted circuit breaker according to claim 1, characterized in that: The terminal post has an "L" shaped structure and is fixed to the top of the pole post by the bottom flange and fastening bolts.

5. The pole-mounted circuit breaker according to claim 3, characterized in that: The corrugated pipe is made of irradiated cross-linked polyethylene and has an axial extension stroke of ≥20mm.

6. The pole-mounted circuit breaker according to claim 3, characterized in that: The outer wall of the anti-corrosion cover is coated with a nano-titanium dioxide photocatalytic coating with a thickness of 0.02-0.05 mm.

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