Washable box-type transformer substation

Abstract

The utility model discloses a Hua-type box transformer substation, and relates to the technical field of transformers. The transformer comprises a transformer body and a base assembly, the transformer body is arranged on the upper side of the base assembly and provided with cooling fins, an extending support and a supporting part are arranged on one side of the base assembly, the extending support is located on the lower side of the cooling fins, and the supporting part is arranged between the extending support and the cooling fins. And the supporting part is fixedly connected with the extension bracket and the radiating fins respectively. The extension support is arranged on one side of the base assembly, the supporting portion is arranged on the extension support, the cooling fins are supported from the bottom through the supporting portion, and due to the fact that the extension support is connected with the base assembly, vibration of the cooling fins and vibration of the transformer can be kept synchronous even if the cooling fins vibrate. Deformation and damage caused by vibration at the joint of the cooling fin and the transformer can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and specifically provides a Chinese-style box transformer. Background Art

[0002] Box-type transformers are commonly used in power generation sites. Existing prefabricated boxes for box-type transformers are typically assembled in factories and then transported to the construction site by truck. Once the prefabricated boxes are installed at the construction site, the corresponding substation equipment is then installed inside them, eliminating the need for on-site assembly and reducing the workload. During assembly, the transformer is also attached to the side of the prefabricated box.

[0003] The transformer is equipped with a heat sink for heat dissipation. After installation, the heat sink is located on the side away from the prefabricated cabin, and the heat sink is in a suspended state to facilitate heat dissipation. Vibration is inevitable during transportation by truck. When the vibration is transmitted to the heat sink, it will cause deformation or damage to the connection between the heat sink and the transformer. Existing heat sinks are usually connected to the oil tank of the transformer. The connection between the heat sink and the oil tank is deformed and damaged due to vibration, and it is also easy to cause leakage of the oil tank. To avoid this situation, after the prefabricated cabin is moved to the truck, sleepers will be placed under the bottom of the heat sink to support the heat sink through the sleepers to prevent the heat sink from vibrating and deforming and damaging the connection with the prefabricated cabin.

[0004] However, when the truck vibrates, the entire prefabricated cabin and the sleepers vibrate, causing the sleepers to shift. During transportation, it's impossible to constantly monitor whether the sleepers are moving away from the underside of the heat sink. If the sleepers move away from the underside of the heat sink, the heat sink loses its support and deforms and damages at the connection to the transformer tank. Utility Model Content

[0005] The utility model provides a Chinese-style box transformer, which is used to solve the problem that the heat sink of a prefabricated cabin is deformed and damaged at the connection with the transformer oil tank due to vibration during transportation.

[0006] The technical solution of the utility model is as follows:

[0007] A Chinese-style box transformer includes a transformer and a base assembly, wherein the transformer is arranged on the upper side of the base assembly, and the transformer is provided with a heat sink. An extension bracket and a support portion are provided on one side of the base assembly, wherein the extension bracket is located on the lower side of the heat sink, and the support portion is provided between the extension bracket and the heat sink, and the support portion is fixedly connected to the extension bracket and the heat sink respectively.

[0008] In this solution, the support portion supports the heat sink from below, providing support at the bottom. The support portion transmits the applied force to the extension bracket, which in turn distributes the applied force to the base assembly. Because the transformer is also secured to the base assembly, even if the truck vibrates during transport, the heat sink and transformer vibrate synchronously. The transformer and prefabricated cabin are not subject to different vibration states, and the connections between the transformers are protected from deformation or damage due to vibration.

[0009] Preferably, the extension bracket is a rectangular frame made of profiles.

[0010] In this solution, the extension bracket is formed by using profiles, which makes it easier to control the cost of the extension bracket.

[0011] Preferably, the support portion is connected to one side of the extension bracket, and the support portion is located on a side of the extension bracket away from the base assembly.

[0012] In this solution, the extension bracket is only used to install the support portion. Therefore, the support portion is arranged on a side of the extension bracket away from the base assembly, which can reduce the volume of the extension bracket.

[0013] Preferably, the Chinese-style box-type transformer includes at least two supporting parts, and the top of each supporting part is connected to the transformer respectively.

[0014] In this solution, the more supporting parts are provided, the larger the supported area of the bottom of the transformer is, which can make the supporting effect of the transformer more stable.

[0015] Preferably, the support portion is a channel steel.

[0016] In this solution, channel steel is used as the support part, and the opening of the channel steel is facing the horizontal direction. At this time, the two sides of the channel steel are connected to the transformer and the extension bracket respectively, which can ensure the connection area and thus ensure the stable connection between the support part, the extension bracket and the transformer.

[0017] Preferably, the support portion is connected to the extension bracket and the transformer via fasteners.

[0018] In this solution, the support portion is easily installed by connecting with fasteners, so that the support portion can be disassembled.

[0019] Preferably, the support portion is connected to the middle portion of the bottom surface of the transformer.

[0020] In this solution, supporting the middle part of the bottom surface of the transformer can balance the force on the transformer and improve the stability of the transformer.

[0021] Preferably, reinforcing ribs are provided at the inner corners of the rectangular frame.

[0022] In this solution, the reinforcement ribs are provided to improve the strength of the rectangular frame, so that the rectangular frame will not be deformed during long-term use, thereby extending the service life of the rectangular frame.

[0023] Beneficial effects of the utility model:

[0024] The utility model is provided with an extension bracket on one side of the base assembly, and a support portion is provided on the extension bracket, which supports the heat sink from the bottom through the support portion. Since the extension bracket is connected to the base assembly, even if the heat sink vibrates, the vibration of the heat sink and the transformer will remain synchronized, which can avoid deformation and damage to the connection between the heat sink and the transformer due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a left view of the utility model;

[0027] Figure 2 is a top view of the base assembly;

[0028] Figure 3 It is a right side view of the extension bracket and the support portion;

[0029] Figure 4 It is a cross-sectional view of the support portion and the inclined gasket from the right side perspective.

[0030] In the above drawings, the corresponding reference numerals are as follows:

[0031] 1. Extension bracket; 2. Channel steel; 3. Connecting plate; 4. Prefabricated cabin; 5. Base assembly; 6. Transformer; 7. Reinforcement rib; 8. Crossbeam; 9. Inclined gasket. DETAILED DESCRIPTION

[0032] In conjunction with the accompanying drawings, the technical solution of the present invention is clearly and completely explained through the specific implementation methods of the embodiments of the present invention.

[0033] Example 1:

[0034] like Figure 1As shown, this embodiment 1 provides a Chinese-style box transformer, including a prefabricated cabin 4, a transformer 6 and a base assembly 5. The prefabricated cabin 4 and the transformer 6 are installed on the top of the base assembly 5. The transformer 6 is connected to one side of the prefabricated cabin 4. The transformer 6 is provided with a heat sink, which is used to dissipate heat to prevent the transformer 6 from being damaged by excessive temperature. An extension bracket 1 is provided on one side of the base assembly 5. The extension bracket 1 extends in a horizontal direction and extends toward the bottom of the heat sink. A channel steel 2 is provided between the extension bracket 1 and the bottom of the heat sink. The bottom of the channel steel 2 is connected to the extension bracket 1, and the top of the channel steel 2 is connected to the bottom of the heat sink. The function of the channel steel 2 is to support the heat sink and prevent the heat sink from vibrating significantly relative to the base assembly 5 and the transformer 6, thereby preventing the connection between the heat sink and the transformer 6 from being deformed and damaged. In other words, because the channel steel 2 is connected to the extension bracket 1, and the extension bracket 1 is connected to the base assembly 5, even if the heat sink vibrates, under the connection action of the channel steel 2, the heat sink and the base assembly 5 vibrate synchronously, that is, vibrate synchronously with the transformer 6 on the base assembly 5, so the connection position of the heat sink and the transformer 6 can remain stable, and the connection between the heat sink and the transformer 6 will not be deformed or damaged.

[0035] The channel steel 2 can also be replaced by square steel. The channel steel 2 is used as a support portion for supporting the heat sink from the bottom. In order to make the support more stable, the channel steel 2 is fixedly connected to the heat sink and the channel steel 2 is also fixedly connected to the extension bracket 1.

[0036] The channel steel 2 can be fixed to the heat sink by bolting or welding. When bolting, threaded holes can be provided at the bottom of the heat sink, or a connecting plate 3 can be welded to the bottom of the heat sink. Through holes can be provided in the channel steel 2 and connecting plate 3 to facilitate the passage of bolts for fastening. The connecting plate 3 can be an L-shaped metal sheet.

[0037] The mode of fixed connection of channel steel 2 and extension bracket 1 can also adopt bolt connection or welding. When adopting bolt connection, through hole is opened on channel steel 2 and extension bracket 1, and bolt can pass through and then fix channel steel 2 and extension bracket 1.

[0038] When channel steel 2 is provided with through holes for bolts, the through holes are strip-shaped. This can mitigate issues caused by installation errors. For example, if the heat sink has threaded holes at the bottom, and both the extension bracket 1 and channel steel 2 have through holes, if channel steel 2 is installed on the extension bracket 1, the positions of the through holes and the threaded holes on channel steel 2 will not align, preventing the channel steel 2 from being bolted to the heat sink. However, using strip-shaped through holes on channel steel 2 allows for more flexible and adjustable bolt installation positions, preventing misalignment between the through holes and the threaded holes.

[0039] Another advantage of using channel steel 2 is that the two sides of channel steel 2 are connected to the heat sink and extension bracket 1 respectively, and the opening of channel steel 2 faces horizontally. When bolts are used for connection, a wrench can enter from the opening of channel steel 2, which makes it easy for the wrench to tighten the bolts.

[0040] like Figure 2 As shown, the extension bracket 1 is a rectangular frame constructed from profiles, which are welded or bolted together to form the rectangular frame. Reinforcing ribs 7 can be provided at the inner corners of the rectangular frame to increase its strength, thereby extending its service life and preventing deformation during transportation due to vibration and forces from the heat sink. Crossbeams 8 can also be provided within the rectangular frame to further enhance its strength. Reinforcing ribs 7 can also be provided between crossbeams 8 and the rectangular frame.

[0041] More cross beams 8 are provided on the side of the extension frame close to the base assembly 5 to improve the strength of the side of the extension frame close to the base assembly 5 and prevent the extension frame from being deformed.

[0042] The profiles constituting the extension frame can be square steel or channel steel 2. The reinforcing ribs 7 can also be square steel or channel steel 2.

[0043] like Figure 1 and Figure 3 As shown, one side of the extension frame is connected to the base assembly 5, which can be connected by welding or bolting. The side of the extension frame away from the base assembly 5 extends to the middle of the bottom surface of the heat sink. The channel steel 2 is connected to the side of the extension frame away from the base assembly 5, thereby connecting the middle of the bottom surface of the heat sink.

[0044] Multiple channel steels 2 can be connected to the side of the extension bracket 1 away from the base assembly 5. Each channel steel 2 is arranged along the side of the extension bracket 1 away from the base assembly 5, which can form support for multiple positions on the bottom of the heat sink, increase the force points of the heat sink, and thus improve the stability of the heat sink.

[0045] The number of the channel steels 2 can be one, two, three, four or more.

[0046] A backing plate can also be placed between the channel steel 2 and the heat sink. Installation errors can cause the distance between the extended bracket 1 and the heat sink to differ. If the distance between the extended bracket 1 and the heat sink is larger than the channel steel 2, a backing plate can be added between them. The backing plate also has through-holes to allow bolts to pass through the backing plate.

[0047] The backing plate is a thin metal plate used to fill the gap between the channel steel 2 and the heat sink.

[0048] like Figure 4As shown, the thickness of the sidewalls of the channel steel 2 is uneven. The closer the sidewalls of the channel steel 2 are to the opening, the thinner they are. Conversely, the farther the sidewalls of the channel steel 2 are from the opening, the thicker they are. This structure ensures that the pressure exerted on the heat sink by the sidewalls is more evenly distributed. When bolts are used to connect the channel steel 2 to the heat sink, an inclined washer 9 is provided between the bolt nut and the channel steel 2. The inclined washer 9 is a washer with different thicknesses on both sides. This allows the nut to be parallel to the outer surface of the sidewalls of the channel steel 2, ensuring uniform force across the nut and preventing the bolt from loosening due to uneven force.

Claims

1. A Chinese-style box transformer, comprising a transformer (6) and a base assembly (5), wherein the transformer (6) is arranged on the upper side of the base assembly (5), and the transformer (6) is provided with a heat sink, characterized in that: An extension bracket (1) and a support portion are provided on one side of the base assembly (5); the extension bracket (1) is located on the lower side of the heat sink; the support portion is provided between the extension bracket (1) and the heat sink; and the support portion is fixedly connected to the extension bracket (1) and the heat sink, respectively.

2. The Chinese-style box-type transformer according to claim 1 is characterized in that: The extension bracket (1) is a rectangular frame made of profiles.

3. The Chinese-style box-type transformer according to claim 1 is characterized in that: The support portion is connected to one side of the extension bracket (1), and the support portion is located on a side of the extension bracket (1) away from the base assembly (5).

4. The Chinese-style box-type transformer according to claim 1 is characterized in that: It comprises at least two supporting parts, and the top of each supporting part is connected to the heat sink respectively.

5. The Chinese-style box-type transformer according to claim 1 is characterized in that: The supporting portion is a channel steel (2).

6. The Chinese-style box-type transformer according to claim 5 is characterized in that: The support portion is connected to the extension bracket (1) and the heat sink via fasteners.

7. The Chinese-style box-type transformer according to claim 3 is characterized in that: The supporting portion is connected to the middle portion of the bottom surface of the heat sink.

8. The Chinese-style box-type transformer according to claim 2 is characterized in that: The inner corners of the rectangular frame are provided with reinforcing ribs (7).

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