A transformer high-voltage bushing installation structure

Abstract

This utility model discloses a transformer high-voltage bushing installation structure, including a transformer shell, a top plate, a high-voltage bushing, a clamping sleeve, and a sealing gasket. The high-voltage bushing has a stepped ring and an insertion section at its bottom. A threaded connecting ring is provided around the insertion hole on the top plate. The clamping sleeve is threadedly connected to the connecting ring, and the clamping ring at its upper end presses the sealing gasket against the stepped ring. This structure achieves precise positioning and installation of the high-voltage bushing through a threaded connection, utilizes the elastic deformation of the sealing gasket to fill gaps, significantly enhances the sealing performance at the connection, effectively prevents impurities from entering, reduces the risk of electrical faults, and improves the insulation and operational stability of the transformer. Simultaneously, the threaded connection facilitates installation and disassembly, reduces labor and time costs, improves equipment maintenance efficiency, and lowers operation and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically to a transformer high-voltage bushing installation structure. Background Technology

[0002] In power systems, transformers are critical equipment, and the installation structure of their high-voltage bushings directly affects their operational stability and safety. High-voltage bushings not only function to extract high-voltage electricity from the transformer's interior, but also require excellent sealing performance to prevent external moisture, dust, and other impurities from entering the transformer and causing electrical faults.

[0003] Existing transformer high-voltage bushing installation structures typically employ simple fixing methods, resulting in poor sealing at the connection between the bushing and the transformer casing top plate. Over long-term operation, this leads to aging and loosening of the seals, allowing external moisture to seep in, affecting the transformer's insulation performance and increasing the risk of equipment failure. Furthermore, traditional installation structures involve cumbersome disassembly and installation of high-voltage bushings, consuming significant manpower and time, hindering efficient transformer maintenance and repair. Therefore, there is an urgent need to design a novel transformer high-voltage bushing installation structure to improve connection sealing and installation convenience. Utility Model Content

[0004] To address the shortcomings in the prior art, this utility model provides a transformer high-voltage bushing installation structure.

[0005] The technical solution adopted by this utility model is: a transformer high-voltage bushing installation structure, including a transformer shell, a top plate fixed on the transformer shell and high-voltage bushings spaced apart on the top plate, and also including a clamping sleeve and a sealing gasket;

[0006] The high-pressure bushing is provided with a pressed step ring at the bottom, and an insertion section extends from the bottom of the pressed step ring;

[0007] The top plate is provided with interlocking holes for insertion and connection of the insertion section, and a connecting ring is provided on the outer ring of the interlocking hole, and an external thread is provided on the outer wall of the connecting ring;

[0008] The clamping sleeve is threadedly connected to the external thread of the connecting ring, and the upper end of the clamping sleeve is provided with a clamping ring that presses against the stepped ring being pressed.

[0009] The sealing gasket is pressed between the compression ring and the pressed step ring.

[0010] Furthermore, the pressing ring and the pressed step ring are provided with corresponding sealing grooves, and a number of concave toothed rings are provided at intervals on the bottom wall of the sealing groove. A number of convex toothed rings are provided at intervals on the upper and lower surfaces of the sealing gasket, and the concave toothed rings and convex toothed rings are interlocked with each other.

[0011] Furthermore, the outer ring of the clamping sleeve is provided with several drainage holes at intervals.

[0012] Furthermore, the connecting ring is integrally formed on the top plate.

[0013] Furthermore, a number of heat dissipation fins are spaced apart on the outer wall of the transformer housing. The heat dissipation fins have pointed ends with gradually decreasing thickness at both ends, and a number of through holes are provided on the heat dissipation fins.

[0014] The beneficial effects of this utility model are:

[0015] 1. This application, by setting a pressed step ring and an insertion section at the bottom of the high-voltage bushing, and cooperating with the insertion hole with a connecting ring and external threads on the top plate, makes the installation of the high-voltage bushing more precise and stable; the clamping sleeve is threadedly connected to the connecting ring, and the clamping ring at the upper end of the clamping sleeve can tightly squeeze the sealing gasket onto the pressed step ring. This structural design greatly enhances the sealing performance at the connection between the high-voltage bushing and the top plate, effectively preventing moisture, dust and other impurities from entering the transformer, reducing the risk of electrical faults caused by sealing problems, and improving the insulation performance and stability of the transformer operation. At the same time, by utilizing the elastic clamping force of the sealing gasket, the high-voltage bushing can be more stably clamped and fixed, ensuring the stability of its connection.

[0016] 2. The high-voltage bushing is directly tightened by the clamping bolt connection. The threaded connection makes the installation and disassembly of the high-voltage bushing simpler and faster. Compared with the traditional installation structure, it can greatly reduce manpower input and time costs, facilitate the daily maintenance and repair of transformers by staff, improve equipment maintenance efficiency, reduce operation and maintenance costs, and provide a reliable guarantee for the stable operation of the power system.

[0017] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a side view of the heat sink fins.

[0021] Figure 3 This is a schematic diagram of a partial cross-section of the socket.

[0022] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0023] Figure 5This is a schematic diagram of the high-pressure bushing.

[0024] Figure 1-5 In the middle: 1. Transformer housing; 2. Top plate; 3. High voltage bushing; 4. Compression sleeve; 5. Sealing gasket; 6. Pressed step ring; 7. Insertion section; 8. Insertion hole; 9. Connecting ring; 10. External thread; 11. Compression ring; 12. Sealing groove; 13. Raised ring tooth; 14. Concave tooth ring; 15. Drain hole; 16. Heat dissipation fins; 17. Tip; 18. Through hole. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] This utility model provides a transformer high-voltage bushing installation structure.

[0028] In this embodiment, refer to Figure 1-5 The transformer high-voltage bushing installation structure includes a transformer housing 1, a top plate 2 fixed on the transformer housing 1, and high-voltage bushings 3 spaced apart on the top plate, as well as a clamping sleeve 4 and a sealing gasket 5.

[0029] The high-pressure bushing is provided with a pressed step ring 6 at the bottom, and an insertion section 7 extends from the bottom of the pressed step ring 6;

[0030] The top plate is provided with interlocking holes 8 for insertion and connection of the insertion section, and a connecting ring 9 is provided on the outer ring of the interlocking hole 8. The outer wall of the connecting ring 9 is provided with external thread 10.

[0031] The clamping sleeve is threadedly connected to the external thread of the connecting ring, and the upper end of the clamping sleeve is provided with a clamping ring 11 that is pressed against the stepped ring being pressed.

[0032] The sealing gasket is pressed between the compression ring and the pressed step ring.

[0033] In the above technical solution, a stepped ring and an insertion section are set at the bottom of the high-pressure bushing, which cooperate with the insertion hole with a connecting ring and external threads on the top plate to achieve the positioning of the high-pressure bushing. The clamping sleeve is threadedly connected to the connecting ring, so that the clamping ring at the upper end of the clamping sleeve presses the sealing gasket onto the stepped ring, forming a sealing and fixing structure. This design utilizes the tightening force of the threaded connection to tightly clamp the sealing gasket, relying on the elastic deformation of the sealing gasket to fill the connection gap and improve the sealing effect. At the same time, the clamping ring is used to press and fix the high-pressure bushing. The structure is novel and reasonable, achieving both sealing and fixing effects.

[0034] Excellent sealing performance effectively prevents moisture, dust and other impurities from entering the transformer, reducing the risk of electrical faults and improving the transformer's insulation performance and operational stability; the threaded connection method facilitates installation and disassembly, reduces labor and time costs, improves equipment maintenance efficiency and reduces operation and maintenance costs.

[0035] Specifically, the pressing ring and the pressed step ring are provided with corresponding sealing grooves 12, and a number of concave toothed rings 13 are provided at intervals on the bottom wall of the sealing groove 12. A number of convex toothed rings 14 are provided at intervals on the upper and lower surfaces of the sealing gasket, and the concave toothed rings 13 and the convex toothed rings 14 are interlocked with each other.

[0036] In this embodiment, corresponding sealing grooves are provided on the clamping ring and the pressed stepped ring, with convex ring teeth on the bottom wall of the grooves and concave toothed rings on the upper and lower surfaces of the sealing gasket. The interlocking of the concave and convex ring teeth increases the friction and contact area between the sealing gasket and the clamping and pressed stepped rings. Simultaneously, the interlocking of the toothed structure further fills tiny gaps. This enhances the sealing effect and prevents the sealing gasket from shifting or deforming under pressure, leading to sealing failure. It is particularly suitable for complex operating conditions such as high voltage and vibration, further improving the sealing performance and reliability of the transformer.

[0037] Specifically, the outer ring of the clamping sleeve is provided with a number of drainage holes 15 at intervals.

[0038] In this embodiment, a drain hole is provided on the outer ring of the compression sleeve. When moisture enters the area around the compression sleeve, it can be drained in time through the drain hole to prevent moisture from accumulating at the connection point.

[0039] Specifically, the connecting ring is integrally formed on the top plate.

[0040] In this embodiment, the connecting ring is integrally formed on the top plate, which avoids the connection gaps between the connecting ring and the top plate caused by welding, bolting or other methods, thereby enhancing the strength and stability of the overall structure.

[0041] Specifically, a number of heat dissipation fins 16 are spaced apart on the outer wall of the transformer housing. The heat dissipation fins 16 have pointed ends 17 with gradually decreasing thickness at both ends, and a number of through holes 18 are provided on the heat dissipation fins.

[0042] In this embodiment, heat dissipation fins are provided on the outer wall of the transformer housing to accelerate heat dissipation by increasing the heat dissipation area; the pointed ends of the heat dissipation fins facilitate airflow, form air guides, and enhance the convective heat dissipation effect; the through holes on the fins further increase the airflow path and promote heat exchange.

[0043] Please note to 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 transformer high-voltage bushing installation structure, comprising a transformer housing, a top plate fixed to the transformer housing, and high-voltage bushings spaced apart on the top plate, characterized in that: It also includes a compression sleeve and a sealing gasket; The high-pressure bushing is provided with a pressed step ring at the bottom, and an insertion section extends from the bottom of the pressed step ring; The top plate is provided with interlocking holes for insertion and connection of the insertion section, and a connecting ring is provided on the outer ring of the interlocking hole, and an external thread is provided on the outer wall of the connecting ring; The clamping sleeve is threadedly connected to the external thread of the connecting ring, and the upper end of the clamping sleeve is provided with a clamping ring that presses against the stepped ring being pressed. The sealing gasket is pressed between the compression ring and the pressed step ring.

2. The transformer high-voltage bushing installation structure according to claim 1, characterized in that: The pressing ring and the pressed step ring are provided with corresponding sealing grooves. Several concave toothed rings are provided at intervals on the bottom wall of the sealing groove, and several convex toothed rings are provided at intervals on the upper and lower surfaces of the sealing gasket. The concave toothed rings and convex toothed rings are interlocked with each other.

3. The transformer high-voltage bushing installation structure according to claim 1, characterized in that: The outer ring of the compression sleeve is provided with several drainage holes at intervals.

4. The transformer high-voltage bushing installation structure according to claim 1, characterized in that: The connecting ring is integrally formed on the top plate.

5. The transformer high-voltage bushing installation structure according to claim 1, characterized in that: The outer wall of the transformer housing is provided with a number of heat dissipation fins at intervals. The heat dissipation fins are provided with pointed ends with gradually decreasing thickness at both ends, and the heat dissipation fins are provided with a number of through holes.

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