An external ventilation structure for European-style prefabricated transformers

Abstract

This application relates to an external ventilation structure for a European-style prefabricated substation, belonging to the technical field of power equipment heat dissipation. It includes a housing, with a ventilation mechanism externally mounted on the housing. A fixing plate is fixedly connected to the exterior of the housing. The ventilation mechanism includes two covers, with adjacent sides of the two covers fixedly connected to the exterior of the housing. A positioning component is disposed inside each cover, and a dustproof net is fixedly connected inside the cover. A ventilation fan is disposed outside the positioning component, and the positioning component includes a fixing frame, which is fixedly connected to the exterior of the cover inside. The advantages of this application are that forced ventilation is activated by the ventilation fan, and air enters the substation after being filtered by a W-shaped dustproof net. Its unique structure increases the filtration area, efficiently intercepting dust. The purified air quickly carries away heat and is discharged, achieving efficient heat dissipation.

Description

Technical Field

[0001] This application relates to heat dissipation of electrical equipment, and in particular to an external ventilation structure for a European-style prefabricated transformer. Background Technology

[0002] With the development of smart grids, European-style prefabricated substations, as key equipment for power distribution automation, are widely used in cities, enterprises, and communities. They integrate high-voltage switches, transformers, and low-voltage distribution devices, improving the flexibility and reliability of power supply. However, during operation, internal components such as circuit breakers and transformers generate a large amount of heat due to resistance and electromagnetic losses. The enclosed space of the prefabricated substation and unreasonable heat dissipation design lead to heat accumulation. High temperatures accelerate the aging of electrical component insulation, reduce equipment performance, shorten service life, and even cause serious accidents such as short circuits and fires. Therefore, optimizing heat dissipation design is the key to ensuring the stable operation of the power system.

[0003] The ventilation structure of a European-style prefabricated substation mainly consists of an air inlet, an air outlet, and ventilation ducts. The air inlet and outlet are set at different heights to form a natural convection base. The ventilation ducts guide the airflow to carry away the heat from the electrical components. Its working principle is based on thermal convection, using natural ventilation to complete heat exchange. When the temperature inside the box exceeds the standard, the air flows rapidly to expel the heat generated by the electrical components from the box in a timely manner, maintaining a suitable internal temperature and ensuring stable operation of the equipment.

[0004] Currently, the industry generally uses natural ventilation or forced ventilation to dissipate heat from transformer substations. However, natural ventilation is inefficient and cannot meet the needs of high-load operation. Although forced ventilation can improve heat dissipation efficiency, it has problems such as high noise and high energy consumption. In addition, dust and debris in the outdoor environment can easily enter the interior of the transformer substation through the ventilation openings, causing equipment pollution or even short circuits. Therefore, an external ventilation structure for European-style transformer substations is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide an external ventilation structure for European-style prefabricated substations, aiming to improve the problem of the lack of a European-style prefabricated substation ventilation structure with efficient heat dissipation, low noise, and good dust prevention.

[0006] The external ventilation structure for a European-style prefabricated substation provided in this application adopts the following technical solution:

[0007] An external ventilation structure for a European-style prefabricated substation includes a housing, a ventilation mechanism on the outside of the housing, a fixing plate fixedly connected to the outside of the housing, two covers on adjacent sides of the two covers fixedly connected to the outside of the housing, a positioning component inside the cover, a dustproof net fixedly connected to the inside of the cover, and a ventilation fan on the outside of the positioning component.

[0008] As a further description of the above technical solution, the two enclosures, together with the positioning components, dustproof nets and ventilation fans, constitute a complete ventilation system. When in operation, the ventilation fan starts to generate suction, and air enters from the ventilation opening. After being filtered by the W-shaped dustproof net, the clean air flows into the transformer and carries away heat, achieving efficient heat dissipation. At the same time, the dustproof net effectively intercepts dust, protects the internal equipment of the transformer, extends the service life of the equipment, and improves the overall operational stability.

[0009] Preferably, the positioning component includes a fixing frame, the fixing frame is externally fixedly connected to the inside of the cover, the ventilation fan is externally fixedly connected to an electrical wire, and the inside of the cover is threadedly connected to a threaded post.

[0010] As a further description of the above technical solution, the mounting bracket is securely installed inside the enclosure, providing reliable support for the ventilation fan, ensuring its stable operation without shaking, and guaranteeing stable airflow output. The high-temperature resistant and wear-resistant wires provide stable power transmission to the ventilation fan, avoiding the impact of wiring problems on the ventilation and heat dissipation effect, and ensuring the continuous and stable operation of the ventilation system.

[0011] Preferably, the bottom end of the cover is provided with a ventilation opening, and the interior of the shell is rotatably connected to a rotating door;

[0012] As a further description of the above technical solution, the ventilation opening at the bottom of the enclosure is scientifically designed to ensure smooth airflow while blocking larger foreign objects from entering, providing good conditions for ventilation and heat dissipation. The rotating door inside the enclosure opens flexibly, facilitating staff to quickly enter the transformer substation for equipment inspection and maintenance, thus improving operation and maintenance efficiency.

[0013] Preferably, the dustproof net is W-shaped, and the continuous W-shaped net increases the filtration area and effectively intercepts dust;

[0014] As a further description of the above technical solution, the unique wave structure of the W-shaped dust filter significantly increases the filtration area compared to traditional flat filters. It can more efficiently capture dust, particles and other impurities in the air, reduce the amount of dust entering the transformer, reduce the risk of equipment failure caused by dust accumulation, and is not easily clogged, reducing the frequency of cleaning and lowering maintenance costs.

[0015] Preferably, the external part of the threaded column is slidably connected to the inside of the dustproof net, and the two covers are symmetrically distributed at the front and rear ends of the housing;

[0016] As a further description of the above technical solution, the threaded column and the dustproof net are slidably connected, which allows for easy disassembly and installation of the dustproof net and facilitates regular cleaning and maintenance. The two covers are symmetrically distributed at the front and back of the housing, forming a through ventilation path between the front and back of the transformer, enhancing the air convection effect, ensuring that the heat inside the transformer is evenly dissipated, and further improving the heat dissipation efficiency. At the same time, the symmetrical structure also enhances the stability and aesthetics of the overall appearance.

[0017] Preferably, the top of the shell is slanted, and the slanted design is used to guide the flow of rainwater;

[0018] As a further description of the above technical solution, the sloping design at the top of the casing allows rainwater to slide off quickly under the action of gravity, effectively preventing rainwater from accumulating and seeping at the top, avoiding rusting of the casing and damage to internal equipment due to rainwater erosion. At the same time, this design reduces rainwater residue and the possibility of dust and other impurities adhering and accumulating, further maintaining the cleanliness of the ventilation system and ensuring the long-term stable operation of the transformer.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. In this utility model, when the transformer substation generates heat during operation, the ventilation fan is activated for forced ventilation. The air enters the transformer substation after being filtered by the W-shaped dustproof net. Its unique structure increases the filtration area, effectively intercepts dust, and the purified air quickly carries away heat and is discharged, achieving efficient heat dissipation. The low-noise fan reduces operating noise, the W-shaped dustproof net reduces cleaning and maintenance, and the rotating door design facilitates quick inspection and maintenance of the internal equipment of the transformer substation, ensuring stable and reliable operation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of an external ventilation structure for a European-style prefabricated substation proposed in this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the cover of an external ventilation structure for a European-style prefabricated transformer proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the fixing plate of an external ventilation structure for a European-style prefabricated transformer proposed in this utility model.

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0025] Legend:

[0026] 1. Shell; 2. Rotating door; 3. Ventilation mechanism; 31. Cover; 32. Dustproof net; 33. Ventilation fan; 34. Positioning assembly; 341. Fixing frame; 342. Wire; 4. Fixing plate. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 This application will be described in further detail below.

[0028] Example: An external ventilation structure for a European-style prefabricated substation, referring to... Figure 1 , Figure 2 and Figure 4 The system includes a housing 1, which is made of high-strength metal with a rust-proof surface treatment, effectively resisting corrosion from complex outdoor environments and providing reliable protection for the internal equipment of the transformer substation. A ventilation mechanism 3 is installed on the exterior of the housing 1, specifically designed to meet the heat dissipation needs of the transformer substation during operation, significantly improving heat dissipation efficiency. A fixing plate 4 is fixedly connected to the exterior of the housing 1. The ventilation mechanism 3 includes two covers 31, whose adjacent sides are firmly fixed to the exterior of the housing 1 by welding or bolts, forming a stable installation structure and providing protection for the internal components. A positioning component 34 is installed inside the cover 31, which precisely fixes the ventilation fan 33, ensuring... To ensure its operational stability, a dustproof net 32 ​​is fixedly connected inside the cover 31. The dustproof net 32 ​​is woven from a special material, and its unique continuous W-shaped design is the key to the entire dustproof system. A ventilation fan 33 is set on the outside of the positioning component 34. The ventilation fan 33 uses a low-noise axial flow fan, which effectively reduces operating noise and minimizes the impact on the surrounding environment while efficiently dissipating heat. A threaded post 343 is threaded inside the cover 31, and the threaded post 343 is slidably connected to the inside of the dustproof net 32. The two covers 31 are symmetrically distributed at the front and rear ends of the shell 1. The symmetrical distribution of the covers 31 improves the heat dissipation efficiency. The top of the shell 1 is slanted, and the slanted design is used to guide the flow of rainwater.

[0029] Specifically, when the transformer substation generates heat during operation, the ventilation fan 33 starts running. Thanks to the characteristics of the low-noise axial flow fan, it reduces noise interference while operating efficiently. External air flows in from the bottom of the enclosure 31 through the scientifically designed ventilation openings. It first passes through the W-shaped dustproof net 32 ​​woven from special materials. Due to the W-shaped structure, the filtration area is greatly increased, and dust, particles and other impurities are effectively intercepted. The purified air is then quickly drawn into the transformer substation by the suction of the ventilation fan 33, carrying away the heat generated by the equipment operation. Subsequently, the hot air is discharged, forming an efficient air circulation and heat dissipation process, ensuring that the transformer substation operates stably at a suitable temperature.

[0030] Reference Figure 1 , Figure 3 and Figure 4The positioning component 34 includes a fixing frame 341, which is tightly fixed to the inside of the cover 31 by bolts, providing a reliable installation support point for the ventilation fan 33. The ventilation fan 33 is externally fixedly connected to a wire 342, which is made of high-temperature resistant and wear-resistant insulating material to ensure safe and stable power transmission. The bottom of the cover 31 is provided with a ventilation opening. The size of the ventilation opening is scientifically calculated to ensure smooth airflow while preventing large foreign objects from entering. The inside of the housing 1 is rotatably connected to a rotating door 2, which is connected by a hinge for flexible and convenient opening. The dustproof net 32 ​​is W-shaped. This continuous W-shaped net design significantly increases the filtration area compared to traditional flat filters, enabling more efficient interception of dust, particles and other impurities in the air, effectively protecting the internal equipment of the transformer from dust damage.

[0031] Specifically, the mounting bracket 341 is firmly fixed inside the enclosure 31 with bolts, providing a stable installation platform for the ventilation fan 33. This prevents it from shaking or shifting during high-speed operation, ensuring stable air output. The high-temperature resistant and wear-resistant wire 342 safely and stably transmits power to the ventilation fan 33, preventing equipment failure due to wiring problems. When maintenance is required on the equipment inside the transformer substation, the hinged rotating door 2 can be opened flexibly, allowing staff to easily enter the enclosure 1 to inspect, debug, and repair the equipment. The W-shaped dustproof net 32 ​​continuously provides efficient filtration, preventing dust from entering the transformer substation even during equipment maintenance, thus providing comprehensive protection for the equipment.

[0032] Working principle: When the transformer substation generates heat during operation, the ventilation fan 33 in the ventilation mechanism 3 starts, using forced ventilation mode to accelerate airflow. Air enters from the ventilation port at the bottom of the enclosure 31, first passing through the dustproof net 32 ​​arranged in a continuous W shape. Due to the increased filtration area caused by the W-shaped structure, dust is effectively intercepted. The purified air flows through the interior of the transformer substation under the action of the ventilation fan 33, carrying away heat, and is then discharged through a reasonable airflow channel to achieve heat dissipation. The fixing bracket 341 of the positioning component 34 plays a role in installing and positioning the ventilation fan 33, ensuring its stable operation. The selection of a low-noise axial flow fan reduces operating noise while providing ventilation and heat dissipation. In addition, the W-shaped dustproof net 32 ​​is not easy to clog, reducing the cleaning frequency and maintenance costs. The rotating door 2 facilitates the maintenance of equipment inside the transformer substation.

[0033] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A structure of external ventilation of a European box transformer, comprising a shell (1), characterized in that: The outer side of the housing (1) is provided with a ventilation mechanism (3), and a fixing plate (4) is fixedly connected to the outer side of the housing (1). The ventilation mechanism (3) includes two covers (31), and the two covers (31) are fixedly connected to the outer side of the housing (1) on their adjacent sides. A positioning component (34) is provided inside the cover (31), and a dustproof net (32) is fixedly connected inside the cover (31). A ventilation fan (33) is provided outside the positioning component (34).

2. The external ventilation structure of the European case transformer according to claim 1, characterized in that: The positioning component (34) includes a fixing frame (341), the outside of which is fixedly connected to the inside of the cover (31), the outside of which is fixedly connected to the ventilation fan (33) with an electric wire (342), and the inside of the cover (31) is threadedly connected to a threaded post (343).

3. The external ventilation structure of the European case transformer according to claim 1, characterized in that: The bottom of the cover (31) is provided with a ventilation opening, and the interior of the shell (1) is rotatably connected with a rotating door (2).

4. The external ventilation structure of an EU-type transformer substation according to claim 1, characterized in that: The dustproof net (32) is W-shaped, and the continuous W-shaped net increases the filtration area and effectively intercepts dust.

5. The external ventilation structure of an EU-type transformer substation according to claim 2, characterized in that: The threaded post (343) is externally slidably connected to the inside of the dustproof net (32), and the two covers (31) are symmetrically distributed at the front and rear ends of the shell (1).

6. The external ventilation structure of an EU-type transformer substation according to claim 1, characterized in that: The top of the shell (1) is slanted, and the slanted design is used to guide the flow of rainwater.

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