Dry-type transformer for high-rise building with fireproof performance

Abstract

The utility model discloses a high -rise residential dry -type transformer with fire -resistant performance, including upper clamp, iron core, winding and lower clamp, upper clamp and lower clamp are fixed in the upper portion and lower portion of iron core respectively, and the bottom of lower clamp is equipped with base, and winding is set up around iron core, and the both sides of lower clamp are equipped with cooling fan, and still be equipped with inner fireproof board between upper clamp and lower clamp, and the edge of upper clamp and lower clamp is set up and surrounds iron core and winding to inner fireproof board, and the surface of inner fireproof board is evenly provided with inner heat dissipation hole, and the outer end surface of inner fireproof board is evenly provided with vertical heat dissipation fin, and the heat dissipation fin between remains gas flow channel for heat dissipation, and inner heat dissipation hole is opposite gas flow channel, and the surface of outer fireproof cover is evenly provided with outer heat dissipation hole. Solve the problem that the fire -resistant performance of existing transformer is poor and needs to rely on external fire -resistant structure to realize the fire -resistant function.

Description

Technical Field

[0001] This utility model relates to the field of transformers, and in particular to a dry-type transformer for high-rise residential buildings with fire-resistant properties. Background Technology

[0002] With the acceleration of urbanization, high-rise and super high-rise buildings are increasing. These buildings are huge and complex in function, and have extremely high requirements for power supply reliability and capacity. As the core power distribution equipment of the power system, transformers are usually located inside the building, such as in the basement, equipment floor, or even intermediate floors, to supply power to users nearby. However, placing large-capacity, high-voltage transformers inside buildings, especially in high-rise buildings, brings extremely serious fire safety challenges.

[0003] For fire protection of transformers in high-rise buildings, the main approach is to use physical fire-resistant partitions: firewalls, fire doors, fire-resistant roller shutters, etc., to separate the transformer room from other areas. However, this method is costly, increases the building weight, and occupies valuable building space. To solve these problems, it is necessary to improve the existing transformer structure, add fire-resistant structures, and enhance its fire resistance. Utility Model Content

[0004] The purpose of this utility model is to provide a fire-resistant dry-type transformer for high-rise residential buildings, solving the problem that existing transformers have poor fire resistance and need to rely on external fire-resistant structures to achieve fire protection.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A fire-resistant dry-type transformer for high-rise residential buildings includes an upper clamp, an iron core, windings, and a lower clamp. The upper and lower clamps are fixed to the upper and lower parts of the iron core, respectively. The bottom of the lower clamp is provided with a base. The windings are arranged around the iron core. Cooling fans are provided on both sides of the lower clamp. The transformer is characterized by: an inner fireproof plate between the upper and lower clamps, the inner fireproof plate surrounding the iron core and windings along the edges of the upper and lower clamps; uniformly distributed internal heat dissipation holes on the surface of the inner fireproof plate; uniformly distributed heat dissipation fins on the outer end face of the inner fireproof plate; the heat dissipation fins are vertically arranged, with gas flow channels for heat dissipation between them; the internal heat dissipation holes facing the gas flow channels; an outer fireproof cover outside the inner fireproof plate; a heat insulation gap between the outer end face of the heat dissipation fins and the inner end face of the outer fireproof cover; and uniformly distributed external heat dissipation holes on the surface of the outer fireproof cover.

[0007] In this design, a two-layer fireproof structure is incorporated into the original dry-type transformer. The outer fireproof cover and the inner fireproof board provide double-layer fire resistance, resulting in superior fire protection compared to a single-layer fireproof structure. The heat dissipation fins increase the contact area between the airflow and the inner fireproof board, allowing for more efficient heat dissipation. The outer fireproof cover effectively blocks flames at the outermost edge, while the insulation gap provides insulation.

[0008] As a further preferred embodiment of this invention, the bottom of the heat dissipation fins is V-shaped.

[0009] This reduces wind resistance, allowing airflow to enter the gas channel more smoothly.

[0010] As a further preferred embodiment of this utility model, the top of the outer fireproof cover is provided with a detachable fireproof sleeve directly opposite the sleeve.

[0011] Fireproof bushings can provide fire protection for high and low voltage bushings. Moreover, since they are detachably connected to the outer fireproof cover, the fireproof bushings can be installed after the high and low voltage bushings are installed, which makes it easier to connect transformer-related structural components.

[0012] As a further preferred embodiment of this utility model, the fireproof sleeve includes a threaded connection part and a sleeve cover part arranged sequentially from bottom to top. The outer surface of the threaded connection part is provided with an external thread of the fireproof sleeve. The top of the outer fireproof cover is provided with a connection hole adapted to the threaded connection part. The inner wall of the connection hole is provided with an internal thread of the connection hole adapted to the external thread of the fireproof sleeve. The diameter of the connection hole is larger than the maximum outer diameter of the sleeve.

[0013] As a further preferred embodiment of this utility model, the inner end face of the outer fireproof cover is inclined inward from bottom to top, and the outer heat dissipation hole is inclined upward from inside to outside.

[0014] This allows the airflow from the fan to be directed outwards from the fireproof cover, preventing fire and smoke from escaping into the fireproof cover in the event of a fire.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] 1. In this solution, a two-layer fireproof structure is designed based on the original dry-type transformer. The outer fireproof cover and the inner fireproof board play a double-layer fire-blocking role, which has a better fireproof effect than a single-layer fireproof structure. The heat dissipation fins can increase the contact surface between the wind and the inner fireproof board, and can more efficiently remove the heat of the inner fireproof board, resulting in better heat dissipation. The outer fireproof cover can block the flame on the outermost side, while the heat insulation gap plays a role in heat insulation.

[0017] 2. It eliminates the need to rely on the building's internal fire-resistant structure, reducing construction costs and lightening the building's weight.

[0018] 3. The wind resistance at the bottom of the heat dissipation fins is small, allowing airflow to enter the gas flow channel more smoothly.

[0019] 4. The fireproof bushing can provide fire protection for high and low voltage bushings. Moreover, since it is detachably connected to the outer fireproof cover, the fireproof bushing can be installed after the high and low voltage bushings are installed, which makes it easier to connect the transformer-related structural components.

[0020] 5. The airflow from the fan is directed outwards towards the fireproof cover, which can prevent fire and smoke from escaping into the outer fireproof cover in the event of a fire, resulting in better fireproof and heat insulation performance of the outer fireproof cover. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the heat dissipation fins. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Specific Implementation Example 1:

[0030] Figure 1 , Figure 2 A fire-resistant dry-type transformer for high-rise residential buildings is shown, comprising an upper clamp 2, an iron core 3, a winding 4, and a lower clamp 5. The upper clamp 2 and the lower clamp 5 are respectively fixed to the upper and lower parts of the iron core 3. A base 6 is provided at the bottom of the lower clamp 5. The winding 4 is arranged around the iron core 3. Cooling fans 7 are provided on both sides of the lower clamp 5. An inner fireproof plate 8 is also provided between the upper clamp 2 and the lower clamp 5. The inner fireproof plate 8 is arranged along the edges of the upper clamp 2 and the lower clamp 5 to enclose the iron core 3 and the winding 4. The inner fireproof plate 8 is surrounded by an outer fireproof cover 10. The surface of the inner fireproof plate 8 is evenly provided with internal heat dissipation holes 81. The outer end face of the inner fireproof plate 8 is also evenly provided with heat dissipation fins 9. The heat dissipation fins 9 are arranged vertically and gas flow channels for heat dissipation are left between the heat dissipation fins 9. The internal heat dissipation holes 81 are directly opposite the gas flow channels. The inner fireproof plate 8 is also provided with an outer fireproof cover 10. A heat insulation gap 11 is left between the outer end face of the heat dissipation fins 9 and the inner end face of the outer fireproof cover 10. The surface of the outer fireproof cover 10 is evenly provided with external heat dissipation holes.

[0031] In this design, a two-layer fireproof structure is incorporated into the original dry-type transformer. The outer fireproof cover and the inner fireproof board provide double-layer fire resistance, resulting in superior fire protection compared to a single-layer fireproof structure. The heat dissipation fins increase the contact area between the airflow and the inner fireproof board, allowing for more efficient heat dissipation. The outer fireproof cover effectively blocks flames at the outermost edge, while the insulation gap provides insulation. Specific Implementation Example 2:

[0033] This embodiment further describes the heat dissipation fins 9 based on specific embodiment 1. The bottom of the heat dissipation fins 9 is V-shaped.

[0034] The low wind resistance at the bottom of the heat sink fins allows airflow to enter the gas channel more smoothly. Specific Implementation Example 3:

[0036] This embodiment further describes the outer fireproof cover 10 based on specific embodiment 1. The top of the outer fireproof cover 10 is provided with a detachable fireproof sleeve 102 opposite to the sleeve. Specific Implementation Example 4:

[0038] This embodiment further describes the fireproof sleeve 102 based on specific embodiment 3. The fireproof sleeve 102 includes a threaded connection part and a sleeve cover part arranged sequentially from bottom to top. The outer surface of the threaded connection part is provided with an external thread of the fireproof sleeve. The top of the outer fireproof cover 10 is provided with a connection hole adapted to the threaded connection part. The inner wall of the connection hole is provided with an internal thread of the connection hole adapted to the external thread of the fireproof sleeve. The diameter of the connection hole is larger than the maximum outer diameter of the sleeve.

[0039] Fireproof bushings can provide fire protection for high and low voltage bushings. Moreover, since they are detachably connected to the outer fireproof cover, the fireproof bushings can be installed after the high and low voltage bushings are installed, which makes it easier to connect transformer-related structural components. Specific Implementation Example 5:

[0041] This embodiment further describes the outer fireproof cover 10 based on specific embodiment 1. The inner end face of the outer fireproof cover 10 is inclined inward from bottom to top.

[0042] The airflow from the fan is directed outwards towards the fireproof cover, which can prevent fire and smoke from escaping into the outer fireproof cover in the event of a fire, and the outer fireproof cover has a better fireproof and heat insulation effect.

[0043] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fire-resistant dry-type transformer for high-rise residential buildings, comprising an upper clamp (2), an iron core (3), a winding (4), and a lower clamp (5), wherein the upper clamp (2) and the lower clamp (5) are respectively fixed to the upper and lower parts of the iron core (3), a base (6) is provided at the bottom of the lower clamp (5), the winding (4) is arranged around the iron core (3), and cooling fans (7) are provided on both sides of the lower clamp (5), characterized in that: An inner fireproof plate (8) is provided between the upper clamp (2) and the lower clamp (5). The inner fireproof plate (8) surrounds the iron core (3) and winding (4) along the edges of the upper clamp (2) and the lower clamp (5). The surface of the inner fireproof plate (8) is uniformly provided with inner heat dissipation holes (81). The outer end face of the inner fireproof plate (8) is also uniformly provided with heat dissipation fins (9). The heat dissipation fins (9) are arranged vertically. There are gas flow channels for heat dissipation between the heat dissipation fins (9). The inner heat dissipation holes (81) are directly opposite the gas flow channels. An outer fireproof cover (10) is also provided outside the inner fireproof plate (8). There is a heat insulation gap (11) between the outer end face of the heat dissipation fins (9) and the inner end face of the outer fireproof cover (10). The surface of the outer fireproof cover (10) is uniformly provided with outer heat dissipation holes.

2. The fire-resistant dry-type transformer for high-rise residential buildings according to claim 1, characterized in that: The bottom of the heat dissipation fins (9) is V-shaped.

3. The fire-resistant dry-type transformer for high-rise residential buildings according to claim 1, characterized in that: The top of the outer fireproof cover (10) is provided with a detachable fireproof sleeve (102) directly opposite the sleeve.

4. The fire-resistant dry-type transformer for high-rise residential buildings according to claim 3, characterized in that: The fireproof sleeve (102) includes a threaded connection part and a sleeve cover part arranged sequentially from bottom to top. The outer surface of the threaded connection part is provided with an external thread of the fireproof sleeve. The top of the outer fireproof cover (10) is provided with a connection hole adapted to the threaded connection part. The inner wall of the connection hole is provided with an internal thread of the connection hole adapted to the external thread of the fireproof sleeve. The diameter of the connection hole is greater than the maximum outer diameter of the sleeve.

5. The fire-resistant dry-type transformer for high-rise residential buildings according to claim 1, characterized in that: The inner end face of the outer fireproof cover (10) is inclined inward from bottom to top.

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