Transformer leading-out cable harness with waterproof structure

Abstract

The utility model relates to the technical field of transformer cables, in particular to a transformer leading-out cable bundle with a waterproof structure, which comprises a transformer body which is a transformation equipment body of an electric power system, and a radiator is mounted on the outer wall surface of the transformer body. According to the transformer leading-out cable bundle with the waterproof structure, the waterproof plate is connected at the upper end of the transformer body through the bolt, and the gasket is arranged at the joint, so that rainwater, dew and the like can be effectively prevented from directly invading into the transformer body from the top, meanwhile, the lead connecting end penetrates through the waterproof plate, and the thread on the outer wall surface of the pipeline is matched with the positioning thread cover; in addition, the waterproof sleeve is made of a rubber material, the inner wall of the waterproof sleeve is tightly attached to the wiring harness butt joint rod, water can be prevented from invading along the wiring harness butt joint rod, then the connecting sleeve is arranged on the lifting rod and the wiring harness butt joint rod in a sleeving mode, the insulation sealing gasket at the bottom end fills gaps at the connecting position, and water is prevented from permeating from the gaps.

Description

Technical Field

[0001] This utility model relates to the field of transformer cable technology, specifically a transformer lead cable bundle with a waterproof structure. Background Technology

[0002] In power transmission systems, transformers are core equipment, and their lead cable bundles undertake the critical task of efficiently and stably transmitting electrical energy to various power-consuming units. However, the installation environment of transformers is complex and diverse, among which humid environments are a common and troublesome problem. Outdoors, lead cable bundles are exposed to wind and rain for a long time, and in some indoor environments near water sources or with high humidity, cable bundles are also very susceptible to water vapor corrosion.

[0003] Traditional transformer cables have relatively complex structures and are difficult to seal, making it difficult to provide temporary protection against moisture and resist long-term damp erosion. The combination of moisture in a humid environment with corrosive gases or impurities in the air will accelerate the aging process of the cables and shorten the service life of the cable bundle. Utility Model Content

[0004] The purpose of this utility model is to provide a transformer lead cable bundle with a waterproof structure to solve the problem mentioned in the background art that the outer sheath of ordinary transformer cables is difficult to block moisture for a short time and cannot resist long-term moisture corrosion. The combination of moisture in the humid environment with corrosive gases or impurities in the air will accelerate the aging process of the cable and shorten the service life of the cable bundle.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a transformer lead cable bundle with a waterproof structure, including a transformer body, which is the transformer equipment body of a power system. A radiator is installed on the outer wall of the transformer body, and the high-voltage cable bundle and the low-voltage cable bundle inside the transformer body are respectively connected to one lead connection terminal, wherein the lead connection terminal is the main lead-out main structure of the transformer cable bundle.

[0006] Two waterproof plates are symmetrically arranged on the upper end of the transformer body, and the waterproof plates are penetrated by the lead wire connection end. A lifting rod is fitted on the upper end of the lead wire connection end, and a wire harness docking rod is provided at the top of the lifting rod, and the wire harness docking rod penetrates the limiting frame.

[0007] The limiting frame is a U-shaped support, and the bottom end of the limiting frame is inserted into the limiting ring. The limiting ring is fixedly connected to the upper end of the water-proof sleeve, and the bottom end of the water-proof sleeve is connected to the connecting sleeve. The bottom end of the connecting sleeve is engaged with an insulating sealing gasket, and the insulating sealing gasket is penetrated by the lifting rod. A positioning threaded cover is rotatably connected to the outside of the insulating sealing gasket.

[0008] By adopting the above technical solution, a multi-layered waterproof structure is constructed to prevent moisture from entering the transformer and cable bundle from different parts and links, ensuring its stable operation in a humid environment.

[0009] Preferably, the upper end of the transformer body is connected to the waterproof plate by bolts, and a washer is provided at the connection between the waterproof plate and the transformer body.

[0010] By adopting the above technical solution, the upper end of the transformer body is connected to the waterproof plate by bolts and a gasket is provided, which effectively prevents water from seeping in from the connection between the top of the transformer and the waterproof plate, and enhances the waterproof sealing effect of the top.

[0011] Preferably, the lead wire connection end, the lifting rod, and the wire harness docking rod are arranged vertically, and the diameter of the lifting rod is smaller than the diameter of the lead wire connection end, and the diameter of the wire harness docking rod is smaller than the diameter of the lifting rod.

[0012] The above technical solution features a vertically arranged lead wire connection end, lifting rod, and wire harness docking rod with decreasing diameters in sequence. This structure optimizes the spatial layout and facilitates component installation and connection.

[0013] Preferably, the wire harness connecting rod is fitted with an insulating nut, the bottom end of which abuts against the surface of the limiting frame, and the surface of the limiting frame is coated with an insulating coating.

[0014] By adopting the above technical solution, the insulation performance is enhanced to prevent short circuits. Furthermore, the positioning function of the limit frame makes the cable connection more stable, ensuring electrical safety and connection reliability.

[0015] Preferably, the waterproof sleeve is made of rubber, and the inner wall of the waterproof sleeve is tightly fitted to the wire harness connecting rod.

[0016] Using the above technical solution, the waterproof sleeve is made of rubber and its inner wall is tightly fitted with the wire harness connecting rod, which can effectively prevent water from intruding upwards along the wire harness connecting rod.

[0017] Preferably, the connecting sleeve is a dry sleeve, and the length of the connecting sleeve is greater than the length of the portion of the lifting rod exposed above the waterproof membrane.

[0018] By adopting the above technical solution, the connecting sleeve is a dry sleeve and its length is greater than the part of the riser exposed by the waterproof membrane. This can not only protect the internal components from physical damage, but also further block moisture and enhance the overall waterproof performance.

[0019] Preferably, the waterproof membrane has pipes at equal intervals at its upper end, through which the lead wire connection end passes, and the outer wall of the pipes of the waterproof membrane is provided with threads, and the threads of the waterproof membrane are threadedly connected to the positioning thread cap.

[0020] Using the above technical solution, the waterproof membrane pipe is threadedly connected to the positioning threaded cap, which ensures that the lead wire connection end is installed through and achieves a tight seal to prevent water from seeping in from the pipe. It can also fix the position of the connecting sleeve and enhance the structural stability.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the transformer lead cable bundle with a waterproof structure:

[0022] 1. This lead-out harness device effectively prevents rainwater and dew from directly invading the transformer body from the top by bolting a waterproof plate to the upper end of the transformer body and installing a washer at the connection point. Simultaneously, the waterproof plate is penetrated by the lead-out connection end, and the threads on the outer wall of the pipe cooperate with the positioning threaded cap to further enhance the sealing performance. Furthermore, the water-proof sleeve is made of rubber, and its inner wall fits tightly against the harness docking rod, preventing water from invading along the rod. The connecting sleeve is then fitted onto the lifting rod and the harness docking rod, and the insulating sealing gasket at its bottom fills the gaps between the connecting sleeve and the waterproof plate, preventing water from seeping in. The threaded connection between the positioning threaded cap and the waterproof plate not only fixes the position of the connecting sleeve but also facilitates disassembly and installation, providing convenience for future maintenance and repair work. This enhances the sealing of the connection points and effectively prevents water from entering the interior through gaps. These components together form multiple waterproof barriers, reducing the risk of water invading the transformer and cable harness.

[0023] 2. The lead wire connection end, lifting rod, and wire harness docking rod in the device are arranged vertically, with their diameters decreasing sequentially. This makes the connection and installation between the components more convenient. At the same time, the threaded connection method between the positioning threaded cover, the waterproof plate, and the connecting sleeve facilitates disassembly and installation, providing convenience for later maintenance and repair work. When the wire harness docking rod is connected to the external wiring harness, it abuts against the insulating nut. The insulating coating of the insulating nut and the limit bracket can effectively prevent current from passing through the limit bracket and causing short circuits to the components inside the transformer, enhancing the insulation performance of the electrical connection and improving the safety of the entire cable harness. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the transformer body, lead connection end and lifting rod of this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the lead wire connection end and the waterproof plate installation of this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the insulated nut and the limiting frame of this utility model.

[0028] Figure 5 This is a schematic diagram of the lead wire connection end and the lifting rod structure of this utility model.

[0029] In the diagram: 1. Transformer body; 2. Radiator; 3. Lead wire connection end; 4. Lifting rod; 5. Wire harness docking rod; 6. Insulating nut; 7. Limiting bracket; 8. Limiting ring; 9. Waterproof sleeve; 10. Connecting sleeve; 11. Insulating sealing gasket; 12. Positioning threaded cover; 13. Waterproof membrane. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-5 This utility model provides a technical solution: a transformer lead cable bundle with a waterproof structure, including a transformer body 1, a radiator 2, a lead connection end 3, a lifting rod 4, a cable bundle docking rod 5, an insulating nut 6, a limiting frame 7, a limiting ring 8, a water-proof sleeve 9, a connecting sleeve 10, an insulating sealing gasket 11, a positioning threaded cover 12, and a waterproof plate 13.

[0032] Among them, the transformer body 1 is the transformer equipment body of the power system. The outer wall of the transformer body 1 is equipped with a radiator 2, and the high voltage wire harness and low voltage wire harness inside the transformer body 1 are respectively connected to a lead wire connection terminal 3. The lead wire connection terminal 3 is the main lead-out structure of the transformer wire harness.

[0033] Two waterproof plates 13 are symmetrically arranged on the upper end of the transformer body 1, and the waterproof plates 13 are penetrated by the lead wire connection end 3. A lifting rod 4 is fitted on the upper end of the lead wire connection end 3, and a wire harness docking rod 5 is provided at the top of the lifting rod 4. The wire harness docking rod 5 passes through the limiting frame 7. The upper end of the transformer body 1 is connected to the waterproof plates 13 by bolts, and a washer is provided at the connection between the waterproof plates 13 and the transformer body 1. The lead wire connection end 3, the lifting rod 4 and the wire harness docking rod 5 are arranged vertically, and the diameter of the lifting rod 4 is smaller than the diameter of the lead wire connection end 3, and the diameter of the wire harness docking rod 5 is smaller than the diameter of the lifting rod 4.

[0034] Referring to the attached diagrams in the instruction manual Figures 1-5As shown, the transformer body 1 is the core of the entire system, responsible for voltage transformation, converting the input voltage into a suitable output voltage. By connecting its internal high-voltage and low-voltage wiring harnesses to the lead connection terminals 3, the electrical connection between the internal circuitry and the external lead cables is completed. The heat sink 2 is installed on the outer wall of the transformer body 1. During transformer operation, heat is generated due to electromagnetic conversion. The heat sink 2 increases the heat dissipation area and accelerates air convection, such as... Figures 1-2 As shown, the heat generated by the transformer body 1 is dissipated into the surrounding environment, effectively extending the service life of the transformer. The waterproof plate 13 is then symmetrically placed on the upper end of the transformer body 1 by bolts. The connection is provided with a gasket to seal the connection and prevent moisture from directly entering the transformer body 1 from the top. The pipe on the waterproof plate 13 is penetrated by the lead wire connection end 3. The thread on the outer wall of the pipe is matched with the positioning thread cover 12 to further enhance the waterproof sealing performance.

[0035] Among them, the lead wire connection end 3 serves as the main lead-out structure of the transformer wire harness, penetrating the waterproof plate 13 to connect the internal windings of the transformer with the external cables and draw out electrical energy. The lifting rod 4 raises the wire harness docking rod 5 to a suitable position to facilitate docking with the external cables. As the lifting rod 4 is raised, it works with other components to ensure a certain insulation distance and prevent electrical faults. The limiting frame 7, which is penetrated by the wire harness docking rod 5, plays a positioning role, accurately limiting the docking position of the cable plug and ensuring the accuracy and stability of the cable connection. In addition, the insulating nut 6 is fitted on the wire harness docking rod 5 to prevent current from passing through the limiting frame 7 and other components and causing a short circuit, thus ensuring electrical safety. Furthermore, the surface of the limiting frame 7 is coated with an insulating coating to further enhance the insulation performance and effectively prevent poor contact caused by connection position deviation.

[0036] The limiting frame 7 is a U-shaped support, and the bottom end of the limiting frame 7 is inserted into the limiting ring 8. The limiting ring 8 is fixedly connected to the upper end of the water-proof sleeve 9, and the bottom end of the water-proof sleeve 9 is connected to the connecting sleeve 10. The water-proof sleeve 9 is made of rubber, and the inner wall of the water-proof sleeve 9 is tightly fitted with the wire harness docking rod 5. The wire harness docking rod 5 is fitted with an insulating nut 6, and the bottom end of the insulating nut 6 abuts against the surface of the limiting frame 7. The surface of the limiting frame 7 is sprayed with an insulating coating. The bottom end of the connecting sleeve 10 is fitted with an insulating sealing gasket 11, and the insulating sealing gasket 11 is penetrated by the lifting rod 4. The insulating sealing gasket 11 is rotatably connected to a positioning threaded cap 12. The connecting sleeve 10 is a dry sleeve, and the length of the connecting sleeve 10 is greater than the length of the part of the lifting rod 4 that is exposed on the waterproof plate 13. The upper end of the waterproof plate 13 is provided with pipes that are penetrated by the lead wire connection end 3 at equal intervals, and the outer wall of the pipes of the waterproof plate 13 is provided with threads. The threads of the waterproof plate 13 are threadedly connected to the positioning threaded cap 12.

[0037] Referring to the attached diagrams in the instruction manual Figures 1-5As shown, during operation, the water-proof sleeve 9 blocks water from entering the interior along the wire harness docking rod 5, effectively preventing water from entering the transformer body 1 and the inside of the cable, and protecting the electrical connection parts from moisture. Since the connecting sleeve 10 is a dry sleeve, it is used to protect the internal components such as the lifting rod 4 and the wire harness docking rod 5 from external physical damage. In conjunction with the water-proof sleeve 9 and the insulating sealing gasket 11, the waterproof and insulating performance is further enhanced, preventing water and external conductive substances from contacting the internal electrical components.

[0038] Because the insulating sealing gasket 11 is penetrated by the lifting rod 4, it fills the gap between the connecting sleeve 10 and the waterproof membrane 13, thus providing insulation and sealing for waterproofing. This prevents moisture from seeping in from the gaps at the connection point, while also ensuring electrical insulation performance and preventing current leakage. The positioning threaded cap 12, which rotates outside the insulating sealing gasket 11, is connected to the threaded outer wall of the waterproof membrane 13 pipe through the inner wall thread. By rotating the positioning threaded cap 12, the position of the connecting sleeve 10 is fixed, making it securely installed. At the same time, this threaded connection method also helps to enhance the overall sealing performance of the structure and prevent moisture intrusion.

[0039] Working principle: When using the transformer lead cable bundle with waterproof structure, the transformer body 1 serves as the core to realize voltage transformation. It is connected to the lead connection terminal 3 through high voltage and low voltage cable bundles to complete the electrical connection between the internal circuit and the external cable, so as to realize the output of electrical energy. During operation, the transformer generates heat due to electromagnetic conversion. The heat sink 2 on the outer wall dissipates the heat of the transformer by increasing the heat dissipation area and accelerating air convection, thereby extending its service life. The waterproof plate 13 is symmetrically installed on the upper end of the transformer body 1 by bolts. The gasket at the connection point is engaged with the threads of the waterproof plate 13 pipe and the positioning threaded cover 12 to form a top waterproof seal to prevent water intrusion.

[0040] The lead wire connection end 3 penetrates the waterproof plate 13 to lead out the transformer power. The lifting rod 4 raises the wire harness docking rod 5 to facilitate docking with external cables, while ensuring the insulation distance and preventing electrical faults. The limit frame 7 is penetrated by the wire harness docking rod 5 to accurately limit the docking position of the cable plug. Together with the insulating nut 6 and the insulating coating on the surface of the limit frame 7, it prevents short circuits and poor contact, and ensures electrical safety.

[0041] During operation, the waterproof sleeve 9 prevents moisture from entering along the wire harness connecting rod 5, and the connecting sleeve 10 protects the internal components from physical damage. Together with the waterproof sleeve 9 and the insulating sealing gasket 11, it enhances the waterproof and insulating performance. The insulating sealing gasket 11 fills the gap between the connecting sleeve 10 and the waterproof plate 13 to prevent moisture infiltration and current leakage. The positioning threaded cap 12 fixes the connecting sleeve 10 through the threaded connection with the waterproof plate 13, enhancing the overall sealing performance and increasing the overall practicality.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer lead cable bundle with a waterproof structure, comprising: The transformer body (1) is the transformer equipment body of the power system. The outer wall of the transformer body (1) is equipped with a radiator (2). The high voltage wire harness and the low voltage wire harness inside the transformer body (1) are respectively connected to a lead wire connection end (3). The lead wire connection end (3) is the main lead-out structure of the transformer wire harness. The transformer body (1) is characterized by having two waterproof plates (13) symmetrically arranged on the upper end, and the waterproof plates (13) are penetrated by the lead wire connection end (3). The lead wire connection end (3) is fitted with a lifting rod (4) on the upper end, and a wire harness docking rod (5) is provided at the top of the lifting rod (4), and the wire harness docking rod (5) penetrates the limiting frame (7). The limiting frame (7) is a U-shaped support, and the bottom end of the limiting frame (7) is inserted into the limiting ring (8). The limiting ring (8) is fixedly connected to the upper end of the water-proof sleeve (9), and the bottom end of the water-proof sleeve (9) is connected to the connecting sleeve (10). The bottom end of the connecting sleeve (10) is engaged with an insulating sealing gasket (11), and the insulating sealing gasket (11) is penetrated by the lifting rod (4). The insulating sealing gasket (11) is rotatably connected to a positioning threaded cap (12).

2. A transformer lead cable bundle with a waterproof structure according to claim 1, characterized in that: The upper end of the transformer body (1) is connected to the waterproof plate (13) by bolts, and a gasket is provided at the connection between the waterproof plate (13) and the transformer body (1).

3. A transformer lead cable bundle with a waterproof structure according to claim 1, characterized in that: The lead wire connection end (3), the lifting rod (4) and the wire harness docking rod (5) are arranged vertically, and the diameter of the lifting rod (4) is smaller than the diameter of the lead wire connection end (3), and the diameter of the wire harness docking rod (5) is smaller than the diameter of the lifting rod (4).

4. A transformer lead cable bundle with a waterproof structure according to claim 1, characterized in that: The wire harness connecting rod (5) is fitted with an insulating nut (6), and the bottom end of the insulating nut (6) abuts against the surface of the limiting frame (7), and the surface of the limiting frame (7) is coated with an insulating coating.

5. A transformer lead cable bundle with a waterproof structure according to claim 1, characterized in that: The waterproof sleeve (9) is made of rubber, and the inner wall of the waterproof sleeve (9) is tightly fitted with the wire harness connecting rod (5).

6. A transformer lead cable bundle with a waterproof structure according to claim 1, characterized in that: The connecting sleeve (10) is a dry sleeve, and the length of the connecting sleeve (10) is greater than the length of the part of the lifting rod (4) that is exposed above the waterproof plate (13).

7. A transformer lead cable bundle with a waterproof structure according to claim 1, characterized in that: The waterproof membrane (13) has pipes that are equidistantly opened at the upper end and are penetrated by the lead wire connection end (3). The outer wall of the pipe of the waterproof membrane (13) is provided with threads, and the threads of the waterproof membrane (13) are threadedly connected to the positioning threaded cap (12).

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