Low-voltage outgoing line structure of dry-type transformer for energy storage

Abstract

The utility model discloses a low -voltage outgoing line structure of dry -type transformer for energy storage in the technical field of transformer, including base, the base is fixedly installed with the iron core, the iron core is provided with low -voltage coil and high -voltage coil, the top of iron core is provided with zero line copper buss, the both sides of base top are all fixedly installed with fan. The utility model discloses through setting low -voltage first end outgoing line row, right -angle outgoing line row and low -voltage last end outgoing line row, through setting low -voltage first end outgoing line row in the downside of low -voltage coil, extends to the downside of low -voltage lower clamp, then is horizontally led out through right -angle outgoing line row below the fan, and low -voltage last end outgoing line row is set up in the upside of low -voltage coil, and is bent and led out in the downside of low -voltage upper clamp, thoroughly eliminates the low -voltage outgoing line copper buss to low -voltage side fan air channel's shelter, can obviously improve the heat dissipation effect and load capacity of dry -type transformer, and effectively guarantees the safe reliability of dry -type transformer for energy storage operation.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to a low-voltage outgoing line structure for a dry-type transformer for energy storage. Background Technology

[0002] The development of photovoltaic and wind power generation has effectively driven the construction and development of energy storage power stations. Because energy storage power stations are high-density, centralized installations, they require high fire resistance from their transformer substations. Therefore, energy storage transformer substations generally use a European-style integrated inverter and dry-type transformer design. Currently, the PCS converter devices in energy storage power stations all adopt a bottom-inlet structure, so the corresponding low-voltage outgoing lines of the dry-type transformer must also adopt a bottom-outlet structure.

[0003] However, existing technologies have some problems: as the traditional outgoing line method of dry-type transformers in the current energy storage industry, the low-voltage outgoing copper busbars are all arranged on the upper side of the fan. The relatively wide copper busbars block the air outlet of the fan, which seriously affects the cooling effect of the low-voltage side fan on the coil. This can easily lead to over-temperature alarms or even over-temperature tripping of the dry-type transformer coil. This has become a relatively common fault phenomenon in energy storage power stations. Therefore, we propose a low-voltage outgoing line structure for dry-type transformers used in energy storage. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a low-voltage outgoing line structure for a dry-type transformer used for energy storage. By avoiding the low-voltage outgoing line from obstructing the fan's heat dissipation duct, the heat dissipation effect and operational reliability of the dry-type transformer fan are ensured.

[0005] The purpose of this utility model is achieved as follows: A low-voltage output structure for a dry-type transformer for energy storage includes a base, on which an iron core is fixedly installed. A low-voltage coil and a high-voltage coil are arranged on the iron core. A neutral copper busbar is arranged on the top of the iron core. Fans are fixedly installed on both sides of the top of the base. A low-voltage first-end output busbar is arranged between the iron core and the low-voltage coil. The bottom end of the low-voltage first-end output busbar extends to below the low-voltage coil and is fixedly connected to a right-angle output busbar. The right-angle output busbar is arranged below the fan. A low-voltage end output busbar is fixedly connected to the neutral copper busbar. The bottom end of the low-voltage end output busbar is attached to the low-voltage coil.

[0006] Optionally, a low-voltage upper clamp is fixedly installed on the top of both sides of the iron core, the neutral copper busbar is fixedly installed on the low-voltage upper clamp, and a low-voltage lower clamp is fixedly installed on the bottom of both sides of the iron core. The low-voltage first-end output busbar is fixed to the iron core through the low-voltage lower clamp.

[0007] Optionally, the low-pressure upper clamp is provided with a clamp positioning pin, which is threaded between the low-pressure upper clamp and the iron core.

[0008] Optionally, a cable outlet bracket is fixedly installed on the base, and an insulating clamp is fixedly connected to the top of the cable outlet bracket, with the right-angle cable outlet fixedly installed on the insulating clamp.

[0009] Optionally, a low-pressure pull plate is provided between the low-pressure upper clamp and the low-pressure lower clamp, and the low-pressure pull plate and the low-pressure lower clamp are connected by pull plate positioning pins.

[0010] Optionally, a clamping pad is fixedly installed on the low-pressure pull plate, and the clamping pad is disposed between the low-pressure pull plate and the iron core.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, by setting up a low-voltage first-end outlet busbar, a right-angle outlet busbar, and a low-voltage last-end outlet busbar, and by placing the low-voltage first-end outlet busbar on the lower side of the low-voltage coil, extending it through the gap between the iron core and the low-voltage lower clamp, and then horizontally leading it out below the fan through the right-angle outlet busbar, and simultaneously placing the low-voltage last-end outlet busbar on the upper side of the low-voltage coil, bending it out below the low-voltage upper clamp, completely eliminates the obstruction of the low-voltage outlet copper busbar to the fan duct on the low-voltage side through the above-mentioned structural optimization. Therefore, it can significantly improve the heat dissipation effect and load capacity of the dry-type transformer, and effectively ensure the safe and reliable operation of the dry-type transformer for energy storage. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram provided by this utility model.

[0014] Figure 2 This is a schematic diagram of the top structure provided by this utility model.

[0015] Figure 3 This is a side view of the structure provided by this utility model.

[0016] Figure 4 This is a side sectional view of the structure provided by this utility model.

[0017] Figure 5 This is a schematic diagram of the low-pressure pull plate structure provided by this utility model.

[0018] Figure 6 yes Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 7 yes Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0020] In the diagram: 1. Base; 2. Iron core; 3. Low-voltage coil; 4. High-voltage coil; 5. Neutral copper busbar; 6. Fan; 7. Low-voltage first-end outlet busbar; 8. Right-angle outlet busbar; 9. Low-voltage last-end outlet busbar; 10. Low-voltage upper clamp; 11. Low-voltage lower clamp; 12. Clamp positioning pin; 13. Insulating clamp; 14. Outlet busbar bracket; 15. Low-voltage pull plate; 16. Pull plate positioning pin; 17. Clamp pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 7 As shown in the figure, the embodiment of this utility model provides a low-voltage output structure for a dry-type transformer for energy storage, including a base 1, an iron core 2 fixedly installed on the base 1, a low-voltage coil 3 and a high-voltage coil 4 arranged on the iron core 2, a neutral copper busbar 5 arranged on the top of the iron core 2, and fans 6 fixedly installed on both sides of the top of the base 1 to enhance the heat dissipation effect of the transformer. A low-voltage first-end output busbar 7 is arranged between the iron core 2 and the low-voltage coil 3. The bottom end of the low-voltage first-end output busbar 7 extends to the bottom of the low-voltage coil 3 and is fixedly connected to a right-angle output busbar 8. The right-angle output busbar 8 is arranged below the fans 6. A low-voltage end output busbar 9 is fixedly connected to the neutral copper busbar 5, and the bottom end of the low-voltage end output busbar 9 is attached to the low-voltage coil 3.

[0023] The low-voltage first-end outlet busbar 7 is positioned below the low-voltage coil 3 and horizontally led out below the fan 6 via a right-angle outlet busbar 8. Meanwhile, the low-voltage end-end outlet busbar 9 is positioned above the low-voltage coil 3 and led out via a connection to the neutral copper busbar 5. Through the optimization of the above structure, the obstruction of the low-voltage outlet copper busbar to the air duct of the fan 6 on the low-voltage side is completely eliminated, thus significantly improving the heat dissipation effect and load capacity of the dry-type transformer.

[0024] Furthermore, low-voltage upper clamps 10 are fixedly installed on the top of both sides of the iron core 2, and the neutral copper busbar 5 is fixedly installed on the low-voltage upper clamps 10. Low-voltage lower clamps 11 are fixedly installed on the bottom of both sides of the iron core 2, and the low-voltage first-end outlet busbar 7 is fixed to the iron core 2 through the low-voltage lower clamps 11.

[0025] By setting the low-voltage upper clamp 10 and the low-voltage lower clamp 11, the neutral copper busbar 5 and the low-voltage first-end outlet busbar 7 can be stably installed, thereby enabling the installation of the low-voltage end outlet busbar 9 and the right-angle outlet busbar 8, ensuring the stability of the structure of the right-angle outlet busbar 8 and the low-voltage end outlet busbar 9.

[0026] Furthermore, the low-pressure upper clamp 10 is provided with a clamp positioning pin 12, which is threadedly connected between the low-pressure upper clamp 10 and the iron core 2.

[0027] The clamp positioning pin 12 enhances the connection strength between the low-pressure upper clamp 10 and the iron core 2, ensuring stability even under electromagnetic force and mechanical vibration environments.

[0028] Furthermore, a cable tray bracket 14 is fixedly installed on the base 1, and an insulating clamp 13 is fixedly connected to the top of the cable tray bracket 14. The right-angle cable tray 8 is fixedly installed on the insulating clamp 13.

[0029] The vertical section of the right-angle cable outlet 8 is connected to the low-voltage first-end cable outlet 7, and the horizontal section of the right-angle cable outlet 8 is connected to the insulating clamp 13, so that the right-angle cable outlet 8 remains stable. The horizontal section of the right-angle cable outlet 8 is led out from below the fan 6, which facilitates wiring and avoids obstructing the air duct of the fan 6, thereby improving the heat dissipation effect.

[0030] Furthermore, a low-pressure pull plate 15 is provided between the low-pressure upper clamp 10 and the low-pressure lower clamp 11, and the low-pressure pull plate 15 and the low-pressure lower clamp 11 are connected by a pull plate positioning pin 16.

[0031] Furthermore, a clamping pad 17 is fixedly installed on the low-pressure pull plate 15, and the clamping pad 17 is positioned between the low-pressure pull plate 15 and the iron core 2.

[0032] Working principle and usage process of this utility model: By placing the low-voltage first-end outlet busbar 7 on the lower side of the low-voltage coil 3, extending it through the gap between the iron core 2 and the low-voltage lower clamp 11 to the lower side of the low-voltage lower clamp 11, and then horizontally leading it out through the right-angle outlet busbar 8 below the fan 6, while placing the low-voltage end outlet busbar 9 on the upper side of the low-voltage coil 3 and bending it out on the lower side of the low-voltage upper clamp 10, the optimization of the above structure completely eliminates the obstruction of the low-voltage outlet copper busbar to the air duct of the low-voltage fan 6. Whether in self-cooling or air-cooling mode, the heat dissipation effect and load capacity of the dry-type transformer are significantly improved, effectively ensuring the safe and reliable operation of the dry-type transformer for energy storage, and featuring low cost and significant performance improvement.

[0033] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A low-voltage outgoing line structure for a dry-type transformer for energy storage, comprising a base (1), an iron core (2) fixedly mounted on the base (1), a low-voltage coil (3) and a high-voltage coil (4) disposed on the iron core (2), a neutral copper busbar (5) disposed on the top of the iron core (2), and fans (6) fixedly mounted on both sides of the top of the base (1), characterized in that: A low-voltage first-end outlet busbar (7) is provided between the iron core (2) and the low-voltage coil (3). The bottom end of the low-voltage first-end outlet busbar (7) extends to the bottom of the low-voltage coil (3) and is fixedly connected to a right-angle outlet busbar (8). The right-angle outlet busbar (8) is located below the fan (6). A low-voltage end outlet busbar (9) is fixedly connected to the neutral copper busbar (5). The bottom end of the low-voltage end outlet busbar (9) is attached to the low-voltage coil (3).

2. The low-voltage outgoing line structure of a dry-type transformer for energy storage according to claim 1, characterized in that: Low-voltage upper clamps (10) are fixedly installed on the top of both sides of the iron core (2), the neutral copper busbar (5) is fixedly installed on the low-voltage upper clamps (10), and low-voltage lower clamps (11) are fixedly installed on the bottom of both sides of the iron core (2). The low-voltage first end outlet busbar (7) is fixed to the iron core (2) through the low-voltage lower clamps (11).

3. The low-voltage outgoing line structure of a dry-type transformer for energy storage according to claim 2, characterized in that: The low-pressure upper clamp (10) is provided with a clamp positioning pin (12), which is threaded between the low-pressure upper clamp (10) and the iron core (2).

4. The low-voltage outgoing line structure of a dry-type transformer for energy storage according to claim 1, characterized in that: A cable tray bracket (14) is fixedly installed on the base (1), and an insulating clamp (13) is fixedly connected to the top of the cable tray bracket (14). The right-angle cable tray (8) is fixedly installed on the insulating clamp (13).

5. The low-voltage outgoing line structure of a dry-type transformer for energy storage according to claim 2, characterized in that: A low-pressure pull plate (15) is provided between the low-pressure upper clamp (10) and the low-pressure lower clamp (11), and the low-pressure pull plate (15) and the low-pressure lower clamp (11) are connected by a pull plate positioning pin (16).

6. The low-voltage outgoing line structure of a dry-type transformer for energy storage according to claim 5, characterized in that: A clamping pad (17) is fixedly installed on the low-pressure pull plate (15), and the clamping pad (17) is located between the low-pressure pull plate (15) and the iron core (2).

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