A new dry-type transformer

Abstract

This utility model provides a novel dry-type transformer, including a frame and a transformer body mounted on the frame. The transformer body includes an iron core, windings, and an insulating outer shell. The frame includes a base, a first connecting seat located on the lower side of the transformer body, a second connecting seat located on the upper side of the transformer, and a protective cover connecting the first and second connecting seats. The transformer body is located inside the protective cover. Crossflow fans are respectively arranged on both sides of the base, and the air outlets of the crossflow fans are connected to the inner cavity of the protective cover. Several exhaust ports are provided on the top of the protective cover. This novel dry-type transformer has a simple structure and reasonable design, facilitating transformer cooling.

Description

Technical Field

[0001] This utility model relates to a transformer, specifically, to a novel dry-type transformer. Background Technology

[0002] A dry-type transformer is a type of transformer whose core and windings are not immersed in insulating liquid. It primarily relies on air convection for cooling and features fire resistance, explosion-proof properties, no pollution, and easy maintenance. It is widely used in high-rise buildings, subways, airports, hospitals, data centers, and other locations with high safety requirements. Currently, many dry-type transformers are available on the market, such as those disclosed in Chinese patent CN217157885U and Chinese patent CN210865873U. However, these transformers lack cooling mechanisms, making cooling inconvenient.

[0003] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a novel dry-type transformer.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A novel dry-type transformer includes a frame and a transformer body mounted on the frame. The transformer body includes an iron core, windings, and an insulating shell. The frame includes a base, a first connecting seat located on the lower side of the transformer body, a second connecting seat located on the upper side of the transformer, and a protective cover connecting the first and second connecting seats. The transformer body is located inside the protective cover. Crossflow fans are respectively provided on both sides of the base. The air outlets of the crossflow fans are connected to the inner cavity of the protective cover. Several exhaust ports are provided on the top of the protective cover.

[0006] The base includes two sets of symmetrically arranged support seats. The support seats are arranged longitudinally, and the first connecting seat and the second connecting seat are arranged laterally. The first connecting seat is fixed above the support seat, and the crossflow fan is located outside the first connecting seat.

[0007] The upper sides of both ends of the support base are provided with installation notches corresponding to the crossflow fan, and the inner wall of the installation notch abuts against the outer wall of the crossflow fan; the two sides of the casing of the crossflow fan are provided with connecting ears, which are fixedly connected to the first connecting base.

[0008] The bottom of the protective cover is provided with an air inlet corresponding to the air outlet of the crossflow fan. The air inlet of the protective cover and the air outlet of the crossflow fan are respectively provided with connecting flanges. A sealing gasket is provided between the two connecting flanges and they are connected by bolts.

[0009] The exhaust port on the top surface and the air inlet on the bottom surface of the protective cover are both rectangular, and a filter screen is installed inside the rectangular opening.

[0010] Both the first and second connecting seats include two U-shaped seats arranged laterally, with the opening sides of the two U-shaped seats facing away from each other. The two U-shaped seats are connected by several connecting rods, and the end of the transformer body is located between the two U-shaped seats.

[0011] A crossflow fan includes a casing, an impeller disposed inside the casing, and a drive motor that drives the impeller to rotate. The drive motor is located outside the casing and is fixedly connected to the end face of the casing. The output shaft of the drive motor is connected to the impeller via a transmission.

[0012] Compared to existing technologies, the advantages of this invention are as follows: This invention provides a novel dry-type transformer that is simple, rationally designed, and facilitates transformer cooling. In practical use, cross-flow fans draw air in from both sides of the bottom of the protective casing. After heat exchange, the airflow exits from the top of the protective casing, thus cooling the transformer. Furthermore, the cross-flow fans drawing air in from both sides of the bottom of the transformer reduce the stress on the dry-type transformer, thereby minimizing vibration and improving structural stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model with the protective cover removed.

[0015] In the diagram: 1. Protective cover; 2. Transformer body; 3. Base; 4. First connecting seat; 5. Second connecting seat; 6. Exhaust port; 7. Crossflow fan; 8. Air outlet; 9. Casing; 10. Impeller; 11. Drive motor. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0018] like Figure 1-2 As shown, a novel dry-type transformer includes a frame and a transformer body 2 mounted on the frame. The transformer body 2 includes an iron core, windings, and an insulating shell. The frame includes a base 3, a first connecting seat 4 located on the lower side of the transformer body 2, a second connecting seat 5 located on the upper side of the transformer, and a protective cover 1 connecting the first connecting seat 4 and the second connecting seat 5. The transformer body 2 is located inside the protective cover 1. Crossflow fans 7 are respectively provided on both sides of the base 3. The air inlets 8 of the crossflow fans 7 are connected to the inner cavity of the protective cover 1. Several exhaust ports 6 are provided on the top of the protective cover 1. Preferably, the exhaust ports and air inlets are staggered.

[0019] This new type of dry-type transformer is simple and rationally designed, facilitating transformer cooling. In practical use, cross-flow fans draw air in from both sides of the bottom of the protective casing. After heat exchange, the airflow exits from the top of the casing, thus cooling the transformer. Furthermore, the cross-flow fans drawing air in from both sides of the bottom of the transformer reduce the stress on the dry-type transformer, thereby minimizing vibration and improving structural stability.

[0020] In one embodiment, the base 3 includes two sets of symmetrically arranged support seats. The support seats are arranged longitudinally, and the first connecting seat 4 and the second connecting seat 5 are arranged laterally. The first connecting seat 4 is fixed above the support seats, and the crossflow fan 7 is located outside the first connecting seat 4 so as to supply air to both sides of the bottom of the transformer.

[0021] In one embodiment, the upper sides of both ends of the support base are respectively provided with mounting notches to form a Z-shaped structure corresponding to the crossflow fan 7, and the inner wall of the mounting notch abuts against the outer wall of the crossflow fan 7; the casing 9 of the crossflow fan 7 is provided with connecting ears on both sides, and the connecting ears are fixedly connected to the first connecting seat 4 for assembly.

[0022] In one embodiment, the bottom surface of the protective cover 1 is provided with an air inlet corresponding to the air outlet 8 of the crossflow fan 7. The air inlet of the protective cover 1 and the air outlet 8 of the crossflow fan 7 are respectively provided with connecting flanges. A sealing gasket is provided between the two connecting flanges and they are connected by bolts. The sealing gasket ensures the sealing of the connection.

[0023] In one embodiment, the exhaust port 6 on the top surface and the air inlet on the bottom surface of the protective cover 1 are both rectangular openings, and a filter screen is provided inside the rectangular opening to prevent debris from entering the protective cover.

[0024] In one embodiment, the first connecting seat 4 and the second connecting seat 5 each include two U-shaped seats arranged laterally, with the opening sides of the two U-shaped seats facing away from each other. The two U-shaped seats are connected by several connecting rods, and the end of the transformer body 2 is located between the two U-shaped seats for assembly.

[0025] In one embodiment, the crossflow fan 7 includes a housing 9, an impeller 10 disposed inside the housing 9, and a drive motor 11 for driving the impeller 10 to rotate. The drive motor 11 is located outside the housing 9 and is fixedly connected to the end face of the housing 9. The output shaft of the drive motor 11 is connected to the impeller 10 for transmission. Specifically, the air outlet is located at the top of the housing.

[0026] The above embodiments can be combined with each other.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A novel dry-type transformer, comprising a frame and a transformer body mounted on the frame; the transformer body comprising an iron core, windings, and an insulating shell; characterized in that: The frame includes a base, a first connecting seat located on the lower side of the transformer body, a second connecting seat located on the upper side of the transformer, and a protective cover connecting the first and second connecting seats. The transformer body is located inside the protective cover. Crossflow fans are respectively provided on both sides of the base. The air outlets of the crossflow fans are connected to the inner cavity of the protective cover. Several exhaust ports are provided on the top of the protective cover.

2. The novel dry-type transformer according to claim 1, characterized in that: The base includes two sets of symmetrically arranged support seats. The support seats are arranged longitudinally, and the first connecting seat and the second connecting seat are arranged laterally. The first connecting seat is fixed above the support seat, and the crossflow fan is located outside the first connecting seat.

3. The novel dry-type transformer according to claim 2, characterized in that: The upper sides of both ends of the support base are provided with installation notches corresponding to the crossflow fan, and the inner wall of the installation notch abuts against the outer wall of the crossflow fan; the two sides of the casing of the crossflow fan are provided with connecting ears, which are fixedly connected to the first connecting base.

4. The novel dry-type transformer according to claim 3, characterized in that: The bottom surface of the protective cover is provided with an air inlet corresponding to the air outlet of the crossflow fan. The air inlet of the protective cover and the air outlet of the crossflow fan are respectively provided with connecting flanges. A sealing gasket is provided between the two connecting flanges and they are connected by bolts.

5. The novel dry-type transformer according to claim 4, characterized in that: The exhaust port on the top surface and the air inlet on the bottom surface of the protective cover are both rectangular, and a filter screen is installed inside the rectangular opening.

6. The novel dry-type transformer according to claim 5, characterized in that: Both the first and second connecting seats include two U-shaped seats arranged laterally, with the opening sides of the two U-shaped seats facing away from each other. The two U-shaped seats are connected by several connecting rods, and the end of the transformer body is located between the two U-shaped seats.

7. The novel dry-type transformer according to claim 6, characterized in that: A crossflow fan includes a casing, an impeller disposed inside the casing, and a drive motor that drives the impeller to rotate. The drive motor is located outside the casing and is fixedly connected to the end face of the casing. The output shaft of the drive motor is connected to the impeller via a transmission.

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