A waterproof dry-type transformer

Abstract

The utility model discloses a waterproof dry -type transformer belongs to transformer technical field, a waterproof dry -type transformer is including transformer body and sealed box, the sealed box is fixedly installed with transformer body, the sealed box outside surface is equipped with a plurality of radiator, the lateral lower portion of sealed box is equipped with a plurality of maintenance mouth, the sealed box is located maintenance mouth position and is equipped with detachable observation window, the lateral surface of sealed box is equipped with self -closing valve, the lateral surface of sealed box is equipped with aviation socket, the upper and lower of sealed box's front end face is respectively threaded and is equipped with at least 1 group low -voltage bushing and at least 1 group high -voltage bushing. The utility model discloses a sealed box is arranged to transformer body, and the transformer body is guided to be connected to low -voltage bushing, high -voltage bushing, aviation socket and exports, ensures that electrical interface is strong in anti -erosion waterproof performance, utilizes radiator and carries out heat dissipation, ensures that transformer body normally operates and uses, and overall protection level is not less than IP67, satisfies the application protection demand of severe environment.

Description

Technical Field

[0001] This utility model belongs to the field of transformer technology and relates to a waterproof dry-type transformer. Background Technology

[0002] Dry-type transformers are electrical devices that use solid insulating materials such as epoxy resin instead of traditional liquid insulating media (such as transformer oil). Due to their small size, light weight, excellent fire resistance, and convenient maintenance, they are widely used in buildings, subways, hospitals, schools, factories, and other places with high safety requirements. With the acceleration of urbanization and the optimization and upgrading of my country's energy structure, and the rapid development of new energy industries such as wind power and photovoltaics, the application scenarios of dry-type transformers have further expanded to remote areas, high-altitude base stations, offshore facilities, and other special environments.

[0003] The protection level of conventional dry-type transformers is usually only IP20, which is far from meeting the requirements of harsh environments. These include: in damp or potentially waterlogged environments such as basements, tunnels, and mines, moisture can easily penetrate the equipment and cause a decline in insulation performance; in locations such as wind turbine towers and photovoltaic substations on tidal flats, high humidity and heat, salt spray corrosion, and the risk of short-term flooding can seriously affect the service life and operational stability of the transformer; in addition, the electrical interface sealing performance of traditional dry-type transformers is insufficient, and the connection parts of the measurement and control circuit are susceptible to corrosion from the external environment, increasing the probability of equipment failure and maintenance costs.

[0004] However, existing technologies mostly address localized protection improvements to solve these problems, failing to create a systematic, fully enclosed protection and environmentally adaptable design, thus making it difficult to fundamentally solve the equipment reliability issues in harsh environments. Utility Model Content

[0005] This utility model provides a waterproof dry-type transformer, which aims to solve the problems of existing dry-type transformers having low protection levels, being unable to adapt to harsh environments such as humidity, salt spray, and short-term water flooding, and having electrical interfaces that are easily corroded and have poor maintenance convenience.

[0006] To achieve the above objectives, this utility model provides a waterproof dry-type transformer, comprising a transformer body and a sealed enclosure. The transformer body is fixedly installed inside the sealed enclosure. Several aluminum profile heat sinks are provided on the outer side of the sealed enclosure. Several maintenance ports are provided on the lower side of the sealed enclosure. A detachable observation window is provided at the maintenance port location on the sealed enclosure. A self-closing valve is provided on the side of the sealed enclosure. An aviation socket is provided on the side of the sealed enclosure. At least one set of low-voltage bushings and at least one set of high-voltage bushings are respectively provided through the upper and lower parts of the front end face of the sealed enclosure. The transformer body is connected to the low-voltage bushings, high-voltage bushings, and aviation socket. The aviation socket is connected to the self-closing valve.

[0007] Preferably, the transformer body includes a main body, low-voltage terminals, high-voltage terminals, a surge arrester, and auxiliary electrical components. The upper part of the main body is connected to the low-voltage terminals, the lower part of the main body is connected to the surge arrester, the surge arrester is connected to the high-voltage terminals, and the auxiliary electrical components are connected to the main body and connected to an aviation socket.

[0008] Preferably, the low-pressure sleeve is provided with a low-pressure conductive rod at the inner end of the sealed box, and the high-pressure sleeve is provided with a high-pressure conductive rod at the inner end of the sealed box. The low-pressure conductive rod is connected to the low-pressure terminal block, and the high-pressure conductive rod is connected to the high-pressure terminal block.

[0009] Preferably, the low-pressure sleeve is provided with a low-pressure conical head at the outer end of the sealed housing, the high-pressure sleeve is provided with a high-pressure conical head at the outer end of the sealed housing, the low-pressure conical head is connected to a low-pressure elbow-type cable, and the high-pressure conical head is connected to a high-pressure elbow-type cable.

[0010] Preferably, the bottom of the transformer body is fixedly connected with foot pads.

[0011] Preferably, the sealed enclosure includes a sealed shell and a cover plate. The sealed shell is constructed with a bottom surface and four sides to form a top opening. The sealed shell is airtightly sealed with a cover plate at the opening.

[0012] Preferably, the radiator includes a bottom panel and heat sinks, wherein the bottom panel is provided with a plurality of heat sinks arranged in an array, and the bottom panel and the heat sinks are integrally connected.

[0013] Preferably, the four sides of the sealing housing and the cover plate are provided with heat dissipation assembly holes, and the sealing housing and the cover plate are airtightly sealed to the bottom panel at the positions of the heat dissipation assembly holes.

[0014] Preferably, the sealing housing is provided with hooks on both sides, front and back, and the cover plate is provided with lifting rings around its perimeter.

[0015] Preferably, the bottom of the sealed housing is provided with a support frame.

[0016] The advantages of this utility model over the prior art are: This utility model provides a waterproof dry-type transformer. By setting a sealed enclosure for the transformer body, the transformer body is guided to connect to low-voltage bushings, high-voltage bushings, and aviation sockets for output. This ensures that the electrical interfaces have strong anti-corrosion and waterproof performance. Heat dissipation is achieved by using a radiator to ensure the normal operation of the transformer body. The overall protection level is not less than IP67, meeting the application protection requirements of harsh environments.

[0017] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 The left view; Figure 4 for Figure 1 The right view; Figure 5 This is a three-dimensional structural diagram of the transformer body in this utility model; Figure 6 for Figure 5 The main view; Figure 7 for Figure 5 Top view; Figure 8 This is a three-dimensional structural diagram of the radiator in this utility model; Figure 9 This is a schematic diagram of the three-dimensional structure of the low-pressure bushing in this utility model; Figure 10 This is a schematic diagram of the three-dimensional structure of the high-pressure bushing in this utility model; Figure 11 This is a three-dimensional structural diagram of the sealed box body in this utility model; Figure label: 1. Transformer body; 2. Sealed enclosure; 3. Radiator; 4. Maintenance observation window; 5. Self-closing valve; 6. Aviation socket; 7. Low-voltage bushing; 8. High-voltage bushing; 9. Main body; 10. Low-voltage terminal block; 11. High-voltage terminal block; 12. Surge arrester; 13. Auxiliary electrical components; 14. Low-voltage conductive rod; 15. High-voltage conductive rod; 16. Low-voltage conical head; 17. High-voltage conical head; 18. Low-voltage elbow-type cable; 19. High-voltage elbow-type cable; 20. Foot pad; 21. Sealed housing; 22. Cover plate; 23. Bottom panel; 24. Heat sink; 25. Hook; 26. Lifting ring; 27. Support frame; 28. Heat dissipation assembly hole; 29. ​​Maintenance port. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] To achieve the above objectives, this utility model provides a waterproof dry-type transformer, see reference. Figures 1-11 As shown, the device includes a transformer body 1 and a sealed enclosure 2. The transformer body 1 is fixedly installed inside the sealed enclosure 2. Several aluminum profile heat sinks 3 are provided on the outer side of the sealed enclosure 2. Several maintenance ports 29 are provided on the lower side of the sealed enclosure 2. A detachable observation window is provided at the maintenance port 29 of the sealed enclosure 2. A self-closing valve 5 is provided on the side of the sealed enclosure 2. An aviation socket 6 is provided on the side of the sealed enclosure 2. At least one set of low-voltage bushings 7 and at least one set of high-voltage bushings 8 are respectively provided through the upper and lower parts of the front end face of the sealed enclosure 2. The transformer body 1 is connected to the low-voltage bushings 7, the high-voltage bushings 8, and the aviation socket 6. The aviation socket 6 is connected to the self-closing valve 5.

[0022] In this embodiment, the sealed enclosure 2 provides a fully enclosed protective foundation for the transformer body 1. The aluminum profile radiator 3 can quickly dissipate the heat generated by the transformer during operation. The maintenance port 29 can serve as a passage to enter the sealed enclosure 2. When maintenance is required, the observation window can be removed to access the interior for repairs. The observation window is made of double-layer tempered glass or transparent acrylic. All parts of the sealed enclosure 2 that require sealing are sealed with fluororubber sealing rings, which not only meets the needs of personnel entering for maintenance after a power outage but also allows for clear observation of the internal status while the equipment is running. The self-closing valve 5 adopts a one-way pressure control structure, which can automatically maintain the air pressure of the sealed enclosure 2 at a slightly positive pressure environment after inflation, effectively preventing the intrusion of external moisture and salt spray. The aviation socket 6 integrates signal and power interfaces, realizing centralized sealed connection of the measurement and control circuit, avoiding the sealing hazards of traditional distributed wiring. Three sets of low-voltage bushings 7 and high-voltage bushings 8 are set respectively (the number can be configured according to the rated current). The penetration points of the sealed enclosure 2 are potted with epoxy resin sealant to ensure no leakage at the interface. The sealing rating of the entire sealed enclosure 2 reaches IP67.

[0023] Furthermore, the transformer body 1 includes a main body 9, a low-voltage terminal block 10, a high-voltage terminal block 11, a surge arrester 12, and an auxiliary electrical component 13. The low-voltage terminal block 10 is connected to the upper part of the main body 9, the surge arrester 12 is connected to the lower part of the main body 9, the surge arrester 12 is connected to the high-voltage terminal block 11, and the auxiliary electrical component 13 is connected to the main body 9. The auxiliary electrical component 13 is connected to the aviation socket 6.

[0024] In this embodiment, the auxiliary electrical components 13 include a temperature control probe, a current transformer, and a fan controller. The temperature control probe can monitor the temperature of the main body 9 in real time. The current transformer collects the current signals on the high-voltage side and the low-voltage side. Both are connected to the aviation socket 6 through a shielded cable to realize remote monitoring of operating parameters. The fan controller is connected to the power interface of the aviation socket 6 and can automatically control the start and stop of the cooling fan according to the temperature control signal to improve the heat dissipation efficiency.

[0025] Furthermore, the low-pressure bushing 7 is provided with a low-pressure conductive rod 14 at the inner end of the sealed housing 2, and the high-pressure bushing 8 is provided with a high-pressure conductive rod 15 at the inner end of the sealed housing 2. The low-pressure conductive rod 14 is connected to the low-pressure terminal 10, and the high-pressure conductive rod 15 is connected to the high-pressure terminal 11.

[0026] Furthermore, the low-pressure bushing 7 is provided with a low-pressure conical head 16 at the outer end of the sealed housing 2, and the high-pressure bushing 8 is provided with a high-pressure conical head 17 at the outer end of the sealed housing 2. The low-pressure conical head 16 is connected to a low-pressure elbow-type cable 18, and the high-pressure conical head 17 is connected to a high-pressure elbow-type cable 19.

[0027] Furthermore, the bottom of the transformer body 1 is fixedly connected with foot pads 20.

[0028] Furthermore, the sealed enclosure 2 includes a sealed housing 21 and a cover plate 22. The sealed housing 21 is constructed from the bottom and four sides to form a top opening. The sealed housing 21 is airtightly sealed with a cover plate 22 at the opening.

[0029] In this embodiment, the sealing housing 21 is formed by bending sheet metal or welding metal plates. The transformer body 1 is inserted into the bottom of the sealing housing 21 from the opening and fixedly installed. It is then sealed by the cover plate 22. The opening of the sealing housing 21 can be at the top or the side, and can be selected as needed.

[0030] Furthermore, the heat sink 3 includes a bottom panel 23 and heat sinks 24. The bottom panel 23 is provided with a plurality of heat sinks 24 arranged in an array, and the bottom panel 23 and the heat sinks 24 are integrally connected.

[0031] In this embodiment, the radiator 3 is made of aluminum profile and has multiple heat sinks 24 arranged in an array to increase the heat dissipation area and improve heat exchange efficiency. The modular design facilitates assembly, and the surface of the heat sinks 24 is anodized to effectively resist salt spray corrosion and extend the service life of the radiator 3.

[0032] In an optional embodiment, the sealing housing 21 and the cover plate 22 are made of aluminum profiles and have heat dissipation properties. The surfaces of both do not need to be perforated, and the modular heat sink 3 can be directly fixed and installed on the corresponding surfaces, allowing for rapid heat dissipation.

[0033] Furthermore, the four sides of the sealing housing 21 and the cover plate 22 are provided with heat dissipation mounting holes 28, and the sealing housing 21 and the cover plate 22 are airtightly connected to the bottom panel 23 at the positions of the heat dissipation mounting holes 28.

[0034] In an optional embodiment, both the sealed housing 21 and the cover plate 22 are provided with heat dissipation mounting holes 28. The modular heat sink 3 is installed in the corresponding position of the heat dissipation mounting hole 28. The heat inside the sealed housing 2 directly contacts the heat sink 3, and the heat is quickly dissipated to the outside to achieve cooling.

[0035] Furthermore, the sealed housing 21 is provided with hooks 25 on both sides and front and back, and the cover plate 22 is provided with lifting rings 26 around its perimeter, which facilitates transportation, lifting and moving installation.

[0036] Furthermore, a support frame 27 is provided at the bottom of the sealed housing 21.

[0037] In summary, this utility model provides a waterproof dry-type transformer. By setting a sealed enclosure 2 for the transformer body 1, the transformer body 1 is guided to connect to the low-voltage bushing 7, the high-voltage bushing 8, and the aviation socket 6 for output, ensuring strong anti-corrosion and waterproof performance of the electrical interface. Heat dissipation is achieved by using a radiator 3 to ensure normal operation of the transformer body 1. The overall protection level is not less than IP67, meeting the application protection requirements of harsh environments.

[0038] The technical principles of this utility model have been described above with reference to specific embodiments, which are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments; all technical solutions falling within the scope of this utility model's concept are protected. Other specific embodiments of this utility model that can be conceived by those skilled in the art without creative effort will also fall within the protection scope of this utility model.

Claims

1. A water-proof dry-type transformer characterized by comprising: The device includes a transformer body and a sealed enclosure. The transformer body is fixedly installed inside the sealed enclosure. Several aluminum profile heat sinks are provided on the outer side of the sealed enclosure. Several maintenance ports are provided on the lower side of the sealed enclosure. A removable observation window is provided at the maintenance port location on the sealed enclosure. A self-closing valve is provided on the side of the sealed enclosure. An aviation socket is provided on the side of the sealed enclosure. At least one set of low-voltage bushings and at least one set of high-voltage bushings are respectively provided through the upper and lower parts of the front face of the sealed enclosure. The transformer body is connected to the low-voltage bushings, high-voltage bushings, and aviation sockets. The aviation sockets are connected to the self-closing valve.

2. The dry-type water-resistant transformer according to claim 1, characterized in that, The transformer body includes a main body, low-voltage terminals, high-voltage terminals, a surge arrester, and auxiliary electrical components. The low-voltage terminals are connected to the upper part of the main body, the surge arrester is connected to the lower part of the main body, the surge arrester is connected to the high-voltage terminals, and the auxiliary electrical components are connected to the main body and connected to an aviation socket.

3. The dry-type water-resistant transformer according to claim 2, characterized in that, The low-pressure bushing is equipped with a low-pressure conductive rod at the inner end of the sealed box, and the high-pressure bushing is equipped with a high-pressure conductive rod at the inner end of the sealed box. The low-pressure conductive rod is connected to the low-pressure terminal block, and the high-pressure conductive rod is connected to the high-pressure terminal block.

4. The dry-type water-resistant transformer according to claim 2, characterized in that, The low-pressure bushing is provided with a low-pressure conical head at the outer end of the sealed housing, and the high-pressure bushing is provided with a high-pressure conical head at the outer end of the sealed housing. The low-pressure conical head is connected to a low-pressure elbow-type cable, and the high-pressure conical head is connected to a high-pressure elbow-type cable.

5. The dry-type water-resistant transformer according to claim 1, characterized in that, The bottom of the transformer body is fixedly connected with foot pads.

6. Dry-type waterproof transformer according to any of claims 1-5, characterized in that, The sealed enclosure includes a sealed shell and a cover plate. The sealed shell is constructed with a bottom surface and four sides to form a top opening. The sealed shell is airtightly sealed with a cover plate at the opening.

7. The dry-type water-resistant transformer according to claim 6, characterized in that, The radiator includes a bottom panel and heat sinks. The bottom panel is provided with a plurality of heat sinks arranged in an array, and the bottom panel and the heat sinks are integrally connected.

8. The dry-type water-resistant transformer according to claim 7, characterized in that, The four sides of the sealed housing and the cover plate are provided with heat dissipation assembly holes, and the sealed housing and the cover plate are airtightly connected to the bottom panel at the positions of the heat dissipation assembly holes.

9. The dry-type water-resistant transformer according to claim 6, characterized in that, The sealing housing is provided with hooks on both sides, front and back, and the cover plate is provided with lifting rings around its perimeter.

10. The waterproof dry-type transformer according to claim 6, characterized in that, The bottom of the sealed housing is provided with a support frame.

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