Pole-mounted vacuum circuit breaker with high-protection joint

Abstract

The invention relates to the field of power equipment protection, in particular to a pole-mounted vacuum circuit breaker with a high-protection joint, which comprises a shell with a wiring hole, a joint embedded in the wiring hole and used for connecting a cable, a protection ring connected to the joint or the shell, and a protection block formed by solidification of insulation glue filled in the protection ring, the joint comprises a main body, a sealing gasket, a baffle ring, a flexible strip, a protective cover, an embedded ring, a container and other parts, and all the parts are matched with one another to achieve specific functions, for example, the baffle ring compresses the sealing gasket, the protective cover shields the main body, and the embedded ring is matched with a related structure for sealing. The technical effects of enhancing the protection performance of the joint of the pole-mounted vacuum circuit breaker, preventing external factors from influencing the performance of the joint, ensuring stable and reliable operation of the joint, prolonging the service life of equipment and improving the safety of the equipment are achieved.

Description

Technical Field

[0001] The present application relates to the field of power equipment protection, and in particular to a pole-mounted vacuum circuit breaker with a high-protection joint. Background Art

[0002] In power systems, pole-mounted vacuum circuit breakers are a crucial piece of electrical equipment, widely used for the control and protection of overhead line segments, branch lines, and distribution transformers. With the continuous development of the power industry, performance requirements for pole-mounted vacuum circuit breakers are becoming increasingly stringent, especially in complex outdoor environments, where their stability and reliability are directly linked to the safe operation of the power grid. Good electrical connections and protective performance ensure the proper functioning of the circuit breaker, reduce the probability of failure, and guarantee the continuity and stability of power supply. Furthermore, as power grids expand in size and become more intelligent, the performance of pole-mounted vacuum circuit breakers, as key node equipment, is crucial for the efficient operation of the entire grid.

[0003] Traditional pole-mounted vacuum circuit breakers feature conventional wiring. Cable connections typically involve simple electrical connections, lacking effective protective measures. Insulation protection may rely solely on the cable's inherent insulation or simple wrapping with standard insulating materials. Furthermore, there are generally no dedicated waterproofing designs, relying solely on the inherent sealing of the circuit breaker housing to block some moisture. In actual operation, cable connections can be insecure and prone to loosening, leading to poor contact and other issues. Furthermore, existing protective measures are ineffective against moisture and dust intrusion in certain environments.

[0004] However, these traditional wiring and protection methods have significant drawbacks. Due to a lack of effective protection, pole-mounted vacuum circuit breakers struggle to meet insulation and waterproofing requirements in complex outdoor environments. Moisture and dust intrusion can degrade the insulation performance of electrical equipment, increase the risk of leakage, and in severe cases, even cause short circuits, disrupting the normal operation of the power grid. Therefore, a new technology solution is urgently needed to improve the insulation and waterproofing performance of pole-mounted vacuum circuit breakers. Summary of the Invention

[0005] In order to improve the insulation and waterproof performance, the present application provides a pole-mounted vacuum circuit breaker with a high-protection joint.

[0006] The present application provides a pole-mounted vacuum circuit breaker with a highly protective joint, which adopts the following technical solution: A pole mounted vacuum circuit breaker with a high protection joint comprises a housing, a joint, a protection ring and a protection block. The housing has a wiring hole. The connector is embedded in the wiring hole and is used to connect cables. The guard ring is connected to the joint or the housing, The insulating glue filled into the protection ring forms the protection block after solidification.

[0007] By adopting the above technical solution, the connection of the pole-mounted vacuum circuit breaker cable is realized. The protective block formed by the solidification of the insulating glue in the protective ring can play a protective role, which helps to improve the sealing, insulation and waterproof performance of the pole-mounted vacuum circuit breaker joint.

[0008] Preferably, the joint comprises a main body, a sealing gasket and a retaining ring. The main body is used to be embedded in the wiring hole. The sealing gasket is sleeved outside the main body, and the outer diameter of the sealing gasket is larger than the inner diameter of the wiring hole. The retaining ring is connected to the outer periphery of the main body, and is used to press the sealing gasket against the shell.

[0009] By adopting the above technical solution, the main body is embedded in the wiring hole to realize the connection between the connector and the circuit breaker; the outer diameter of the sealing gasket is larger than the inner diameter of the wiring hole and is pressed against the shell by the retaining ring, which can play a sealing role, prevent dust and water from entering the interior of the circuit breaker, enhance the protection of the connector, and meet the high requirements of the pole-mounted vacuum circuit breaker for the insulation and waterproof performance of the connector.

[0010] Preferably, the joint further comprises a flexible strip and a protective cover, The flexible strip is connected to the sealing gasket, The protective cover is connected to the flexible strip and is used to shield the main body.

[0011] By adopting the above technical solution, the protective cover is used to cover the main body during storage and transportation, effectively preventing external dust, moisture, etc. from entering the interior of the connector, further improving the protection performance of the connector, avoiding the impact of external factors on the connector, and improving the overall reliability and service life of the pole-mounted vacuum circuit breaker.

[0012] Preferably, the joint further comprises an insert ring, The embedded ring is connected to the retaining ring, and the embedded ring is used for embedding the sealing gasket.

[0013] By adopting this technical solution, the insert ring compresses the gasket, which elastically deforms to allow the insert ring to embed into the gasket. This not only improves the gasket's position, but also ensures a tight fit between the insert ring and the gasket. This enhances the seal between the connector and the wiring hole, thereby improving the waterproof, dustproof, and insulation performance of the pole-mounted vacuum circuit breaker connector.

[0014] Preferably, an annular groove is provided on the end surface of the insert ring facing away from the retaining ring.

[0015] By adopting the above technical solution, the embedded ring and the sealing gasket are tightly fitted, so that the sealing gasket is partially embedded in the ring groove, ensuring that the embedded ring and the sealing gasket are tightly fitted.

[0016] Preferably, the retaining ring is provided with an embedding groove, and the embedding groove is used for embedding the embedding ring. The end surface of the embedded ring facing away from the retaining ring is provided with an annular groove; When the embedded ring is separated from the embedded groove, the ring width of the embedded ring increases as it moves away from the retaining ring, and the maximum ring width of the embedded ring is greater than the ring width of the embedded groove.

[0017] By adopting the above technical solution, the sealing gasket embedded in the annular groove is partially squeezed along the width direction of the annular groove, so that the sealing gasket embedded in the annular groove is tightly fitted with the annular groove wall, thereby improving the sealing performance.

[0018] Preferably, the joint further comprises a container, The container is used to be embedded in the embedding groove, and the container is filled with sealant; When the embedding ring is embedded in the embedding groove and is flush with the retaining ring, the container located in the embedding groove is broken.

[0019] By adopting the above technical solution, when the container ruptures, the sealant overflows and fills the space between the insert ring and the wall of the insert groove, thereby improving the sealing performance between the insert ring and the retaining ring. At the same time, the sealant does not contact the sealing gasket, thereby preventing the sealant from affecting the sealing gasket.

[0020] Preferably, a convex ring is provided on the surface of the shell, and the convex ring is opposite to the embedded ring.

[0021] By adopting the above technical solution, a convex ring is provided on the surface of the shell facing the embedded ring, which can further improve the sealing and protection of the connection between the joint and the shell, and better meet the high requirements of the pole-mounted vacuum circuit breaker for insulation and waterproof performance.

[0022] Preferably, the retaining ring is provided with a mounting hole, the mounting hole is located outside the insert ring, and the mounting hole is used for a fastener to pass through.

[0023] By adopting the above technical solution, the mounting hole does not affect the seal between the insert ring and the sealing gasket. At the same time, the fastener is used to achieve a reliable connection between the joint and the housing.

[0024] In summary, this application includes at least one of the following beneficial technical effects: The connector is embedded in the wiring hole and fits the inner circumference, and the protective ring is filled with insulating glue to form a protective block, which can prevent moisture and dust from intruding and improve waterproof and dustproof performance; The protective block can strengthen the insulation performance between cables, reduce the risk of leakage, and avoid short circuit failure; The overall structure enhances the stability and reliability of the pole-mounted vacuum circuit breaker, ensuring the continuity and stability of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a partial schematic diagram of a pole mounted vacuum circuit breaker with a high protection joint.

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0027] Figure 3 This is a partial schematic diagram of the pole-mounted vacuum circuit breaker when the embedding ring is out of the embedding groove.

[0028] Explanation of the accompanying reference numerals: 1. Shell; 11. Wiring hole; 12. Through hole; 13. Convex ring; 2. Connector; 21. Main body; 22. Sealing gasket; 221. Avoidance hole; 23. Retaining ring; 231. Mounting hole; 232. Embedded groove; 24. Embedded ring; 241. Ring groove; 3. Protective ring. DETAILED DESCRIPTION

[0029] The present application is further described in detail below with reference to the accompanying drawings.

[0030] Reference Figure 1 , an embodiment of the present application discloses a pole-mounted vacuum circuit breaker with a high-protection joint, including a housing 1 and a joint 2.

[0031] The housing 1 is provided with a wiring hole 11. A connector 2 is inserted into the wiring hole 11 and is used to connect a cable. For example, the connector 2 includes a metal pin, to which the cable is fixedly connected by welding, and the metal pins are insulated from each other.

[0032] The joint 2 includes a main body 21 , a sealing gasket 22 and a retaining ring 23 .

[0033] The main body 21 is embedded in the wiring hole 11. A sealing gasket 22 is placed over the main body 21. The outer diameter of the sealing gasket 22 is larger than the inner diameter of the wiring hole 11. A retaining ring 23 is fixedly connected to the outer periphery of the main body 21 and is used to press the sealing gasket 22 against the housing 1. In the accompanying drawings, the outer diameter of the sealing gasket 22 is not smaller than the outer diameter of the retaining ring 23; the inner diameter of the sealing gasket 22 is smaller than the inner diameter of the wiring hole 11.

[0034] The retaining ring 23 has a mounting hole 231 for fasteners to pass through. The sealing gasket 22 has a corresponding avoidance hole 221, and the housing 1 has a corresponding through-hole 12. Both the avoidance hole 221 and the through-hole 12 are for fasteners to pass through. The fasteners can be bolts or rivets.

[0035] The joint 2 further comprises a flexible strip (not shown in the figure) and a protective cover (not shown in the figure).

[0036] The flexible strip is connected to the sealing gasket 22. A protective cover is connected to the flexible strip and is used to shield the main body 21. For example, the flexible strip, protective cover, and sealing gasket 22 are integrally formed of rubber; the protective cover is used to cover the outer periphery of one end of the main body 21 to achieve shielding of the interface of the main body 21.

[0037] Reference Figure 1 and Figure 2 The joint 2 further includes an insert ring 24 and a container (not shown in the figure).

[0038] The end surface of the retaining ring 23 facing the sealing end is coaxially provided with an embedding groove 232, and the mounting hole 231 is located outside the embedding groove 232. The embedding groove 232 is used for embedding the embedding ring 24.

[0039] Reference Figure 2 and Figure 3 , an annular groove 241 is provided at the end surface of the insert ring 24 away from the retaining ring 23. When the insert ring 24 is separated from the embedding groove 232, the ring width of the insert ring 24 increases as it moves away from the retaining ring 23, and the maximum ring width of the insert ring 24 is greater than the ring width of the embedding groove 232.

[0040] The container is used to be embedded in the embedding groove 232, and the container is filled with sealant. The container can be a capsule.

[0041] When the embedded ring 24 is embedded in the embedded groove 232 and is flush with the retaining ring 23 , the container in the embedded groove 232 is broken and the sealant overflows.

[0042] The housing 1 is provided with a convex ring 13 on its surface, which faces the insert ring 24. When the insert ring 24 is inserted into the insert groove 232, the outer diameter of the annular groove 241 is equal to the outer diameter of the convex ring 13, and the inner diameter of the annular groove 241 is equal to the inner diameter of the convex ring 13.

[0043] Reference Figure 1 The pole-mounted vacuum circuit breaker with a high-protection joint further includes a protection ring 3.

[0044] After the cable is connected to connector 2, the protective ring 3 is attached to connector 2 or housing 1, and the protective ring 3 is placed over the cable. The protective ring 3 can be made of waterproof insulating tape or a single, ring-shaped structure. In the figure, the protective ring 3 is connected to connector 2; the outer diameter of the protective ring 3 is no larger than the inner diameter of the wiring hole 11. The insulating adhesive filled in the protective ring 3 solidifies to form a protective block.

[0045] In other embodiments, the protective ring 3 may be connected to the housing 1 , and the insulating glue filled in the protective ring 3 also contacts the sealing gasket 22 .

[0046] The implementation principle of a pole-mounted vacuum circuit breaker with a highly protective connector in the embodiment of the present application is as follows: by embedding the connector 2 into the wiring hole 11 of the housing 1, a multi-level seal is achieved using a sealing gasket 22, a retaining ring 23, an embedded ring 24, and a convex ring 13. Combined with the protection of the protective cover, the filling of insulating glue in the protective ring 3 to form a protective block, and the role of the sealant in the container, the insulation and waterproof performance of the pole-mounted vacuum circuit breaker are enhanced from multiple levels. This structural design effectively prevents the intrusion of moisture and dust, reduces the risk of leakage and the probability of short-circuit failures, and greatly improves the stability and reliability of the pole-mounted vacuum circuit breaker in complex outdoor environments compared to traditional wiring and protection methods, ensuring the safe operation of the power grid.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pole mounted vacuum circuit breaker with a high protective joint, characterized in that: It comprises a housing (1), a joint (2), a protective ring (3) and a protective block, The housing (1) has a wiring hole (11), The connector (2) is embedded in the wiring hole (11), and the connector (2) is used to connect cables. The protective ring (3) is connected to the joint (2) or the housing (1). The insulating glue filled into the protective ring (3) solidifies to form the protective block.

2. A pole mounted vacuum circuit breaker with a high protection joint according to claim 1, characterized in that: The joint (2) comprises a main body (21), a sealing gasket (22) and a retaining ring (23). The main body (21) is used to be embedded in the wiring hole (11). The sealing gasket (22) is sleeved on the outside of the main body (21), and the outer diameter of the sealing gasket (22) is larger than the inner diameter of the wiring hole (11). The retaining ring (23) is connected to the outer periphery of the main body (21), and the retaining ring (23) is used to press the sealing gasket (22) against the housing (1).

3. A pole mounted vacuum circuit breaker with a high protection joint according to claim 2, characterized in that: The joint (2) also includes a flexible strip and a protective cover, The flexible strip is connected to the sealing gasket (22), The protective cover is connected to the flexible strip, and the protective cover is used to shield the main body (21).

4. A pole mounted vacuum circuit breaker with a high protection joint according to claim 2, characterized in that: The joint (2) further comprises an insert ring (24), The embedded ring (24) is connected to the retaining ring (23), and the embedded ring (24) is used to embed the sealing gasket (22).

5. A pole mounted vacuum circuit breaker with a high protection joint according to claim 4, characterized in that: An annular groove (241) is provided on the end surface of the embedded ring (24) facing away from the retaining ring (23).

6. A pole mounted vacuum circuit breaker with a high protection joint according to claim 4, characterized in that: The retaining ring (23) is provided with an embedding groove (232), and the embedding groove (232) is used for embedding the embedding ring (24). The end surface of the insert ring (24) facing away from the retaining ring (23) is provided with an annular groove (241); When the embedded ring (24) is separated from the embedded groove (232), the ring width of the embedded ring (24) increases as it moves away from the retaining ring (23), and the maximum ring width of the embedded ring (24) is greater than the ring width of the embedded groove (232).

7. A pole mounted vacuum circuit breaker with a high protection joint according to claim 6, characterized in that: The joint (2) also includes a container, The container is used to be embedded in the embedding groove (232), and the container is filled with sealant; When the embedding ring (24) is embedded in the embedding groove (232) and the embedding ring (24) is flush with the retaining ring (23), the container located in the embedding groove (232) is broken.

8. A pole mounted vacuum circuit breaker with a high protection joint according to claim 5 or 6, characterized in that: A convex ring (13) is provided on the surface of the housing (1), and the convex ring (13) is directly opposite to the embedded ring (24).

9. The pole mounted vacuum circuit breaker with a high protection joint according to claim 4, characterized in that: The retaining ring (23) is provided with a mounting hole (231), the mounting hole (231) is located outside the embedded ring (24), and the mounting hole (231) is used for a fastener to pass through.

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