An interface guard

Abstract

The interface protection device comprises a rain cover which is fixed around the off-phase bus and surrounds the connection part between the off-phase bus and the rubber sleeve, and the rain cover comprises a mounting part and a main body part; the mounting part is in a cylindrical shape and is used for being fixed with the outer wall of the off-phase bus; one end of the main body part is integrally formed with the mounting part, and the main body part is in an outward expanding shape and surrounds the connection part between the off-phase bus and the rubber sleeve. The application can form a full-range rainproof barrier at the connection part between the rubber sleeve and the off-phase bus.

Description

Technical Field

[0001] This utility model belongs to the technical field of equipment protection, and specifically relates to an interface protection device. Background Technology

[0002] In power systems, the interface between high-current phase-isolated busbars and transformer equipment is exposed to the outdoor environment for extended periods. Due to the gap between the rubber sleeve and the phase-isolated busbar at this interface, rainwater can easily seep into the busbar casing and then into the high-current phase-isolated busbar, causing short circuits and other faults, severely impacting the safe and stable operation of the power system. Simultaneously, direct sunlight accelerates the aging of components at the interface, reduces equipment lifespan, and increases maintenance costs and safety hazards.

[0003] Traditional protective measures often use simple protective covers for shielding, but these simple covers are prone to rainwater accumulation, and the accumulated water may seep into the interface gaps through the edge gaps of the protective cover. In addition, traditional protective measures are difficult to block side splashing rainwater in strong winds, and rainwater can still flow along the surface of the busbar to the gap between the rubber sleeve and the phase busbar, making it difficult to form a comprehensive rainproof barrier. Utility Model Content

[0004] This utility model provides an interface protection device to solve the problems of water seepage and aging at the interface of the phase busbar.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: An interface protection device includes a rain cover, which is fixed around a phase busbar and protects the connection between the phase busbar and the rubber sleeve. The rain cover includes a mounting part and a main body. The mounting part is cylindrical and is used to fix it to the outer wall of the phase busbar; One end of the main body is integrally formed with the mounting part, and the main body is outwardly flared to protect the connection between the phase busbar and the rubber sleeve.

[0006] Furthermore, the middle area of ​​the mounting part has an outwardly protruding mounting groove, and a sealing ring is provided in the mounting groove, which is tightly clamped to the outside of the phase busbar; The top of the mounting section is fixed to the side wall of the phase busbar by spot welding at intervals.

[0007] Furthermore, the rain cover also includes an edge portion, which is disposed on the outer edge of the main body to guide the water flow; A water-retaining edge is provided at the bottom of the edge portion near the connection with the main body portion.

[0008] Furthermore, the water-blocking edge is vertically arranged as a whole, and the sidewall of the water-blocking edge protrudes outward to form an arc-shaped sidewall.

[0009] Furthermore, the inner wall of the rain cover is provided with a water-guiding strip, which includes a water-absorbing part and a water-guiding part; The water-absorbing part is sandwiched between the mounting part and the outer wall of the phase busbar, and is located below the sealing ring; Multiple water inlets are arranged circumferentially along the inner wall of the main body, and the end of each water inlet extends to the inner wall of the water-blocking edge.

[0010] Furthermore, the rain cover includes a supporting frame and a rainproof cloth. The supporting frame includes a connecting ring and several supporting units. The connecting ring is used to clamp the phase busbar. The sealing ring is disposed on the inner wall of the connecting ring.

[0011] Furthermore, the multiple support units are arranged at circumferential intervals around the phase busbar; The support unit includes a diagonal brace, a horizontal bar, and a vertical brace connected in sequence. The diagonal brace and the vertical brace are disconnected, and the vertical brace is fully welded to the outer wall of the phase busbar.

[0012] Furthermore, an installation post is provided above the connecting ring corresponding to each of the support units, and a groove is formed on the outer wall of the installation post, and an installation rope for fixing the rainproof cloth is bolted in the groove.

[0013] Furthermore, the end of the diagonal brace extends beyond the end of the crossbar, and the outer edge of the rainproof cloth hangs down below the end of the diagonal brace.

[0014] Furthermore, the surface of the diagonal brace has an outwardly curved arc.

[0015] The present invention can achieve the following beneficial effects: 1. This utility model provides an interface protection device that effectively prevents rainwater from entering the gap between the rubber sleeve and the offline busbar at the interface between the offline busbar and the transformer equipment through a rain cover. This prevents rainwater from entering the offline busbar and extends its service life. At the same time, the rain cover can also provide shade and prevent aging.

[0016] 2. This application achieves sealing through a sealing ring, enabling the device to adapt to the thermal expansion and contraction deformation of the phase busbar, thereby reducing the probability of damage to the protective device; at the same time, it is combined with a water guide strip, which can absorb water that seeps through the sealing ring and guide it to the water-blocking edge to drip down.

[0017] 3. The support frame is equipped with multiple support units and is protected from rain by a rainproof cloth. This not only enhances the structural strength of the protective device, but also allows for multiple replacements when the rainproof cloth is damaged due to long-term exposure to the outdoors. Attached Figure Description

[0018] 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 installation of an interface protection device according to Embodiment 1 of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial structural diagram of the rain cover used to illustrate Embodiment 2 of this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 1. Rain cover; 11. Mounting part; 111. Mounting groove; 12. Main body; 13. Edge part; 14. Water-blocking edge; 15. Rainproof cloth; 16. Connecting ring; 17. Support unit; 171. Diagonal brace; 172. Horizontal bar; 173. Vertical brace; 18. Mounting column; 181. Groove; 2. Sealing ring; 3. Water guide strip; 31. Water absorption part; 32. Water guide part; 100, Separated phase busbar; 200, Rubber sleeve. Detailed Implementation

[0020] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0021] Example 1 like Figure 1 and Figure 2 As shown, an interface protection device includes a rain cover 1, which is fixed around the phase busbar 100 and surrounds the connection between the phase busbar 100 and the rubber sleeve 200, thus forming an all-round protective barrier. The rain cover 1 specifically includes a mounting part 11 and a main body 12. The mounting part 11 is cylindrical and can be tightly fitted to the outer wall of the phase busbar 100 for fixation. The main body 12 is integrally formed with the mounting part 11, and the main body 12 extends outward in an flared cylindrical shape, enclosing the connection between the phase busbar 100 and the rubber sleeve 200. By setting the main body 12 to a flared cylindrical shape, sufficient space is reserved at the connection point to facilitate the disassembly of the rubber sleeve 200 and the phase busbar 100 during routine maintenance, while effectively blocking rainwater from all directions. In actual production, the rain cover 1 is made of 5mm thick aluminum plate. Aluminum plate is lightweight and corrosion resistant, making it suitable for outdoor power equipment protection scenarios.

[0022] In the middle region of the mounting part 11, a mounting groove 111 protrudes outward, and a sealing ring 2 is fitted inside the mounting groove 111. The sealing ring 2 is made of silicone rubber resistant to high and low temperatures, and its inner diameter is slightly smaller than the outer diameter of the phase bus 100. When the mounting part 11 is fitted onto the phase bus 100, the sealing ring 2 will be tightly clamped to the outer wall of the phase bus 100, and will fill the tiny gap between the mounting part 11 and the phase bus 100 by its own elastic deformation, thus achieving a reliable seal. When the phase bus 100 expands and contracts due to heat during operation, the sealing ring 2 can adjust itself elastically to always maintain a sealed state.

[0023] Multiple weld points are evenly spaced along the circumference at the top of the mounting part 11 to achieve a fixed connection with the phase busbar 100. The welding length of each weld point is controlled at 20-30mm, and the interval is 100-150mm. The interval spot welding method can ensure a firm connection between the mounting part 11 and the phase busbar 100, while avoiding the rigid constraint caused by full welding. It also reserves space for the slight relative displacement caused by temperature changes, preventing the mounting part 11 or the phase busbar 100 from deforming due to stress concentration.

[0024] The rain cover 1 also includes an edge portion 13, which is located on the outer edge of the main body 12 away from the mounting portion 11. The edge portion 13 extends outward along the outer edge of the main body 12, forming a structure similar to an eave. When rainwater falls on the surface of the main body 12, it flows along the outwardly sloping surface of the main body 12 to the edge portion 13, and then the edge portion 13 guides the water flow to the outside, preventing rainwater from dripping directly onto the connection point.

[0025] At the bottom of the edge portion 13 near the connection with the main body portion 12, a water-blocking edge 14 is integrally formed. The water-blocking edge 14 is vertical, and its outward-facing sidewall protrudes outward to form an arc-shaped sidewall. The arc-shaped sidewall can prevent rainwater splashing from the side from crossing the edge portion 13 and entering the inner side of the main body portion 12, thereby enhancing the rainproof effect.

[0026] To address the possibility of minor rainwater infiltration, the inner wall of the rain cover 1 is equipped with a water-guiding strip 3. The water-guiding strip 3 is made of a composite non-woven fabric material that combines water absorption and water conduction, and includes two parts: a water-absorbing part 31 and a water-guiding part 32. The water-absorbing part 31 is sandwiched between the mounting part 11 and the outer wall of the phase busbar 100, and is located below the sealing ring 2. When a small amount of rainwater seeps through the sealing ring 2, the water-absorbing part 31 will quickly absorb the rainwater, preventing the rainwater from seeping down the outer wall of the phase busbar 100 to the connection point. Multiple water-guiding sections 32 are evenly spaced along the inner wall of the main body 12. One end of each water-guiding section 32 is connected to the water-absorbing section 31, and the other end extends to the inner wall of the water-blocking edge 14. The rainwater absorbed by the water-absorbing section 31 is transmitted to the water-blocking edge 14 through the water-guiding effect of the water-guiding section 32, and finally drips down the water-blocking edge 14 to the outside, so as to reduce the possibility of rainwater seeping to the connection between the phase busbar 100 and the rubber sleeve 200.

[0027] After the rain cover 1 is installed, the surface of the rain cover 1 is polished and cleaned, and then sprayed with weather-resistant and anti-corrosion paint of the same color as the busbar shell. As a result, rainwater falling on the surface of the rain cover 1 will slide down quickly along the inclined arc surface. At the same time, the weather-resistant and anti-corrosion paint can resist sunlight and rainwater erosion, extending the service life of the rain cover 1.

[0028] Example 2 The difference between Embodiment 2 and Embodiment 1 of this application is that the rain cover 1 in Embodiment 1 is integrally formed using an aluminum plate, while the rain cover 1 in Embodiment 2 includes a supporting frame and a rainproof cloth 15. Figure 3 As shown, the support frame includes a connecting ring 16 and multiple support units 17. The connecting ring 16 is located at the mounting part 11, and the inner wall of the connecting ring 16 is provided with a sealing ring 2, just like the mounting part 11. The sealing ring 2 is used to achieve a seal between the connecting ring 16 and the outer wall of the phase bus 100.

[0029] Multiple support units 17 are evenly spaced around the circumference of the phase busbar 100. Each support unit 17 includes a diagonal brace 171, a horizontal bar 172, and a vertical brace 173 connected in sequence. One end of the diagonal brace 171 is fixedly connected to the connecting ring 16. The support unit 17 is generally triangular, but the vertical brace 173 is disconnected from the diagonal brace 171, and the vertical brace 173 is fully welded to the side wall of the phase busbar 100, thereby enabling the fixed installation of the support unit 17. The support unit 17 provides stable support for the support frame through the vertical brace 173, and provides a support frame for the rainproof cloth 15 through the cooperation of the diagonal brace 171 and the horizontal bar 172. At the same time, disconnecting the connection between the vertical brace 173 and the diagonal brace 171 can reduce the stress transmission caused by the thermal expansion and contraction of the phase busbar 100.

[0030] Above the connecting ring 16, a mounting post 18 is provided at a position corresponding to each support unit 17. The outer wall of the mounting post 18 is recessed inward to form a groove 181, and a mounting rope is fastened inside the groove 181. The rainproof cloth 15 is made of weather-resistant canvas material, and its edge is fixed in the groove 181 by the mounting rope. The installation method of the rainproof cloth 15 is both firm and reliable, and it is also convenient to disassemble and replace the rainproof cloth 15 when it ages or is damaged.

[0031] The end of the diagonal brace 171 furthest from the connecting ring 16 extends outward from the end of the crossbar 172. After the rainproof cloth 15 is installed on the support frame, its outer edge naturally hangs down below the end of the diagonal brace 171 to guide rainwater. Furthermore, the surface of the diagonal brace 171 is formed with an outwardly curved arc. This arc design not only enhances the structural strength of the diagonal brace 171 but also guides rainwater falling on its surface to flow to both sides, preventing rainwater accumulation on the support frame. It should be noted that the rainproof cloth 15 and the support frame are not only secured by a single installation rope; several straps are also installed inside the rainproof cloth 15. These straps can connect to the support frame at multiple points to prevent the rainproof cloth 15 from separating from the support frame in windy weather.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An interface guard, comprising: The rain cover (1) is fixed around the phase busbar (100) and protects the connection between the phase busbar (100) and the rubber sleeve (200). The rain cover (1) includes a mounting part (11) and a main body part (12). The mounting part (11) is cylindrical and is used to fix it to the outer wall of the phase busbar (100); One end of the main body (12) is integrally formed with the mounting part (11), and the main body (12) is outwardly flared and surrounds the connection between the phase busbar (100) and the rubber sleeve (200); The mounting part (11) has a mounting groove (111) protruding outward in the middle area. A sealing ring (2) is provided in the mounting groove (111) and the sealing ring (2) is tightly clamped to the outside of the phase busbar (100). The top of the mounting part (11) is fixed to the side wall of the phase busbar (100) by spot welding at intervals; The rain cover (1) also includes an edge portion (13), which is disposed on the outer edge of the main body portion (12) to guide the water flow; A water-blocking edge (14) is provided at the bottom of the edge portion (13) near the connection with the main body portion (12). The water-blocking edge (14) is vertically arranged as a whole, and the side wall of the water-blocking edge (14) protrudes outward to form an arc-shaped side wall; The inner wall of the rain cover (1) is provided with a water guide strip (3), which includes a water absorption part (31) and a water guide part (32). The water-absorbing part (31) is sandwiched between the mounting part (11) and the outer wall of the phase busbar (100), and is located below the sealing ring (2); The water intake section (32) is provided in multiple circumferentially along the inner wall of the main body (12), and the end of each water intake section (32) extends to the inner wall of the water-blocking edge (14).

2. The interface protection device according to claim 1, characterized in that: The rain cover (1) includes a support frame and a rainproof cloth (15). The support frame includes a connecting ring (16) and several support units (17). The connecting ring (16) is used to clamp the phase busbar (100). The sealing ring (2) is disposed on the inner wall of the connecting ring (16).

3. The interface protection device according to claim 2, characterized in that: Multiple support units (17) are arranged circumferentially around the phase busbar (100); The support unit (17) includes a diagonal brace (171), a horizontal bar (172) and a vertical brace (173) connected in sequence. The diagonal brace (171) and the vertical brace (173) are disconnected, and the vertical brace (173) is fully welded to the outer wall of the phase busbar (100).

4. An interface protection device according to claim 2, characterized in that: An installation post (18) is provided above the connecting ring (16) at a position corresponding to each of the support units (17). The outer wall of the installation post (18) forms a groove (181), and an installation rope for fixing the rainproof cloth (15) is attached to the groove (181).

5. An interface protection device according to claim 3, characterized in that: The end of the diagonal brace (171) extends beyond the end of the crossbar (172), and the outer edge of the rainproof cloth (15) hangs down below the end of the diagonal brace (171).

6. An interface protection device according to claim 3, characterized in that: The surface of the diagonal brace (171) has an outwardly curved arc.

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