Outdoor double-layer container type dual-voltage dry-type transformer

Abstract

The utility model provides an outdoor double -deck container formula double voltage dry -type transformer, shell sets up double -deck container formula structure, box formula shell sets up outgoing line flange, high low pressure adopts independent copper row fixed outgoing structure, transformer high voltage winding adopts series -parallel connection structure, high low pressure double -sided arrangement outgoing structure. Through the utility model's technical scheme, avoid the phenomenon of mismatch caused by voltage, cause unnecessary loss, guarantee power utilization safety, this invention outdoor double -deck container formula double voltage dry -type transformer structure, not only satisfied the requirement of outdoor arrangement, adopts the arrangement structure that double pair open exhaust fan and axial flow fan are combined, satisfies user low temperature rise requirement. This invention outdoor container formula double voltage conversion dry -type transformer lead structure, not only satisfied the requirement of outdoor arrangement, adopts lead structure fixed and is arranged separately with shell, can carry out simultaneously, has saved production time, has guaranteed the body insulation strength.

Description

Technical Field

[0001] This utility model relates to the technical field of dual-voltage dry-type transformer equipment, and more specifically, to an outdoor double-layer container-type dual-voltage dry-type transformer. Background Technology

[0002] With rapid economic and industrial development, the requirements for power safety, stable power supply, and emergency response measures are constantly being improved. As distribution network upgrades involve the coexistence of 20kV and 10kV dual-voltage systems, traditional dry-type transformers have revealed significant shortcomings: single-voltage design necessitates complete replacement during grid switching, resulting in an average power outage of 18 hours; insufficient heat dissipation in outdoor single-layer enclosures leads to excessive temperature rise (≥80K), increasing the insulation aging failure rate by 40%; on-site welding of high and low voltage leads takes >4 hours and is prone to loosening, threatening insulation safety. This utility model addresses these pain points by employing a dual-voltage winding structure, pre-installed copper busbar fixing, and a double-layer containerized air-cooling system to achieve compatible power supply, low temperature rise (≤65K), and efficient installation. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides an outdoor double-layer containerized dual-voltage dry-type transformer.

[0004] This utility model is achieved through the following technical solution: an outdoor double-layer container-type dual-voltage dry-type transformer, including a shell and a dual-voltage dry-type transformer body installed inside the shell. A low-voltage independent copper busbar is provided on the upper left side of the dual-voltage dry-type transformer body, and a high-voltage independent copper busbar is provided on the right side. The low-voltage independent copper busbar is fixedly connected to the low-voltage winding lead of the dual-voltage dry-type transformer body, and the high-voltage independent copper busbar is fixedly connected to the high-voltage winding lead of the dual-voltage dry-type transformer body. The low-voltage independent copper busbar and the high-voltage independent copper busbar are respectively supported and fixed by a first resin insulating frame and a second resin insulating frame. The first resin insulating frame and the second resin insulating frame are fixedly installed on the dual-voltage dry-type transformer body. The outer shell is a container-type shell, and the side walls of the shell are composed of a double-layer structure consisting of an outer steel plate and an inner steel plate. The shell is equipped with a front door and a rear door, and two pairs of exhaust fans are installed on the upper part of the front door and the rear door respectively.

[0005] As a preferred option, the high-voltage winding of the dual-voltage dry-type transformer adopts a series-parallel structure to achieve 20kV / 10kV dual-voltage switching.

[0006] As a preferred option, an insulation layer is provided between the outer steel plate and the inner steel plate.

[0007] Furthermore, the insulation layer is made of aluminum silicate fiber felt with a thickness of 50mm.

[0008] As a preferred embodiment, the left and right side walls of the casing are equipped with a double-layer structure with a low-voltage lead-out flange and a high-voltage lead-out flange, respectively.

[0009] As a preferred option, the exhaust fan has a diameter of 600mm and a power of 168W. This invention, by adopting the above technical solutions, has the following beneficial effects compared with the prior art: This invention can meet the requirements of transformer operation in both 20kV and 10kV distribution networks, avoiding voltage mismatch and unnecessary losses, thus ensuring electrical safety. The outdoor double-layer containerized dual-voltage dry-type transformer structure not only meets the requirements for outdoor installation but also meets the user's low-temperature rise requirements by employing a combination of double-split exhaust fans and axial flow fans. Furthermore, the outdoor containerized dual-voltage conversion dry-type transformer lead structure not only meets the requirements for outdoor installation but also allows for simultaneous installation of the lead structure, saving production time and ensuring the insulation strength of the transformer body.

[0010] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a front view of the internal structure of the outer shell; Figure 4 This is a schematic diagram of the left-side view of the internal structure of the outer shell; Figure 5 This is a top view of the internal structure of the outer shell; in, Figures 1 to 5 The correspondence between the reference numerals and components in the attached drawings is as follows: 1. Outer casing; 2. Dual-voltage dry-type transformer body; 3. Low-voltage independent copper busbar; 4. High-voltage independent copper busbar; 5. First resin insulation frame; 6. Second resin insulation frame; 7. Front door; 8. Rear door; 9. Outer steel plate; 10. Inner steel plate; 11. Insulation layer; 12. Low-voltage lead-out flange; 13. High-voltage lead-out flange; 14. Exhaust fan. Detailed Implementation

[0012] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0013] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0014] The following is combined Figures 1 to 5 The outdoor double-layer containerized dual-voltage dry-type transformer of this utility model will be described in detail.

[0015] like Figure 1 , Figure 2 As shown, this utility model proposes an outdoor double-layer containerized dual-voltage dry-type transformer, including a casing 1 and a dual-voltage dry-type transformer body 2 installed inside the casing 1. The high-voltage winding of the dual-voltage dry-type transformer 2 adopts a series-parallel structure to achieve 20kV / 10kV dual-voltage switching. Figure 3 , Figure 4 As shown, a low-voltage independent copper busbar 3 is installed on the left side of the upper part of the dual-voltage dry-type transformer body 2, and a high-voltage independent copper busbar 4 is installed on the right side. The low-voltage independent copper busbar 3 is fixedly connected to the low-voltage winding lead of the dual-voltage dry-type transformer body 2, and the high-voltage independent copper busbar 4 is fixedly connected to the high-voltage winding lead of the dual-voltage dry-type transformer body 2. The low-voltage independent copper busbar 3 and the high-voltage independent copper busbar 4 are supported and fixed by a first resin insulation frame 5 and a second resin insulation frame 6, respectively. The first resin insulation frame 5 and the second resin insulation frame 6 are fixedly installed on the dual-voltage dry-type transformer body 2. The outer shell 1 is a container-type shell. The side wall of the outer shell 1 is a double-layer structure composed of an outer steel plate 9 and an inner steel plate 10. An insulation layer 11 is provided between the outer steel plate 9 and the inner steel plate 10. The insulation layer 11 is made of aluminum silicate fiber felt with a thickness of 50mm. The outer shell 1 is provided with a front door 7 and a rear door 8. Two pairs of exhaust fans 8 are installed on the upper part of the front door 7 and the rear door 8, respectively. The diameter of the exhaust fan 8 is 600mm and the power is 168W. The left and right side walls of the outer casing 1 are respectively equipped with a low-voltage lead-out flange 12 and a high-voltage lead-out flange 13 through a double-layer structure.

[0016] Practice has proven that the outdoor double-layer containerized dual-voltage dry-type transformer structure, with its box-type casing equipped with lead-out flanges and independent copper busbars for fixing the high and low voltage leads, can be pre-installed and fixed on the transformer body, simplifying operation and saving time. The high-voltage winding adopts a series-parallel structure, with leads arranged on both high and low voltage sides, facilitating tap adjustment and avoiding insulation distance issues with D-type connecting rods. The outdoor double-layer containerized structure utilizes a combination of double-split exhaust fans and axial flow fans, meeting users' low-temperature rise requirements, preventing heat concentration, facilitating transformer heat dissipation, and improving transformer performance.

[0017] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0018] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0019] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An outdoor double-layer containerized dual-voltage dry-type transformer, comprising a casing (1) and a dual-voltage dry-type transformer body (2) installed inside the casing (1), characterized in that... The dual-voltage dry-type transformer body (2) is provided with a low-voltage independent copper busbar (3) on the left side and a high-voltage independent copper busbar (4) on the right side. The low-voltage independent copper busbar (3) is fixedly connected to the low-voltage winding lead of the dual-voltage dry-type transformer body (2), and the high-voltage independent copper busbar (4) is fixedly connected to the high-voltage winding lead of the dual-voltage dry-type transformer body (2). The low-voltage independent copper busbar (3) and the high-voltage independent copper busbar (4) are supported and fixed by the first resin insulation frame (5) and the second resin insulation frame (6) respectively. The first resin insulation frame (5) and the second resin insulation frame (6) are fixedly installed on the dual-voltage dry-type transformer body (2). The outer shell (1) is a container-type shell. The side wall of the outer shell (1) is composed of an outer steel plate (9) and an inner steel plate (10) forming a double-layer structure. The outer shell (1) is provided with a front door (7) and a rear door (8). Two pairs of exhaust fans (14) are installed on the upper part of the front door (7) and the rear door (8).

2. The outdoor double-layer containerized dual-voltage dry-type transformer according to claim 1, characterized in that... The high-voltage winding of the dual-voltage dry-type transformer (2) adopts a series-parallel structure.

3. The outdoor double-layer containerized dual-voltage dry-type transformer according to claim 1, characterized in that, An insulation layer (11) is provided between the outer steel plate (9) and the inner steel plate (10).

4. An outdoor double-layer containerized dual-voltage dry-type transformer according to claim 3, characterized in that, The insulation layer (11) is aluminum silicate fiber felt with a thickness of 50 mm.

5. An outdoor double-layer containerized dual-voltage dry-type transformer according to claim 1, characterized in that, The outer casing (1) has a double-layer structure with a low-voltage lead-out flange (12) and a high-voltage lead-out flange (13) respectively.

6. An outdoor double-layer containerized dual-voltage dry-type transformer according to claim 1, characterized in that, The exhaust fan (14) has a diameter of 600mm and a power of 168W.

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