Three-phase dry-type transformer with forced air cooling by heat dissipation fan

Abstract

The utility model discloses a three -phase dry type transformer of forced air cooling of area heat dissipation fan, relate to transformer technical field, including base, the base upper portion is installed the iron core, the iron core outside is provided with three groups of windings, and each group winding both ends inside all reserve the passage of wind, and each group winding both ends all are installed with the heat dissipation fan corresponding with passage of wind. This three -phase dry type transformer, through setting temperature detection part real -time detection winding temperature, and according to temperature threshold value automatic control heat dissipation fan start -stop, when winding heat value exceeds threshold value, heat dissipation fan work produces airflow and takes away heat, realizes forced air cooling. This design can promptly, accurately to winding carries out heat dissipation, effectively avoided the performance decline and short -lived problem that the winding temperature is too high to cause, improved the reliability and stability of transformer obviously.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, specifically a three-phase dry-type transformer with a forced air cooling fan. Background Technology

[0002] Three-phase dry-type transformers play a crucial role in power systems, widely used in various industrial, commercial, and residential applications for voltage transformation and power transmission. With the continuous growth of modern electricity demand and the rapid development of power electronics technology, increasingly higher requirements are being placed on the performance and reliability of three-phase dry-type transformers.

[0003] In traditional three-phase dry-type transformers, current flows through the windings during operation, inevitably generating heat due to the thermal effect of the current. If this heat cannot be dissipated effectively and promptly, the winding temperature will continuously rise. Excessive temperature can have serious negative impacts on the transformer's performance and lifespan. On the one hand, high temperatures accelerate the aging of the winding insulation material, reducing insulation performance and increasing the risk of insulation breakdown, thereby triggering faults such as short circuits and threatening the safe and stable operation of the power system. On the other hand, high temperatures also increase the transformer's copper and iron losses, reducing transformer efficiency and increasing energy consumption. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a three-phase dry-type transformer with a forced air cooling fan, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a three-phase dry-type transformer with forced air cooling and a cooling fan, including a base, an iron core installed on the upper part of the base, three sets of windings arranged outside the iron core, an air passage reserved inside both ends of each set of windings, and a cooling fan corresponding to the air passage installed at both ends of each set of windings.

[0006] Furthermore, a temperature detection component is installed on the side of the iron core, and the detection end of the temperature detection component extends into the inside of the winding to detect the temperature of the winding during operation.

[0007] Furthermore, the temperature detection component is a temperature sensor.

[0008] Furthermore, the high-voltage output terminal of the winding is connected to a high-voltage terminal, and the low-voltage output terminal of the winding is connected to a low-voltage terminal. An external cable can be connected to the three-phase dry-type transformer through the high-voltage terminal and the low-voltage terminal.

[0009] Furthermore, the cooling fan is installed at both ends of each winding and its position corresponds to the air passage to achieve forced air cooling of the winding.

[0010] This invention provides a three-phase dry-type transformer with forced air cooling and a cooling fan. Compared with the prior art, it has the following advantages:

[0011] This three-phase dry-type transformer uses a temperature detection component to monitor the winding temperature in real time and automatically controls the start and stop of the cooling fan based on a temperature threshold. When the winding heat value exceeds the threshold, the cooling fan operates to generate airflow to remove heat, achieving forced air cooling. This design can dissipate heat from the windings in a timely and precise manner, effectively avoiding performance degradation and shortened lifespan caused by excessively high winding temperatures, and significantly improving the reliability and stability of the transformer. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the winding structure in this utility model;

[0014] Figure 3 This is a schematic diagram of the assembly structure of this utility model;

[0015] Figure 4 This is a half-sectional view of the assembled version of this utility model.

[0016] In the diagram: 1. Base; 2. Iron core; 21. Temperature detection component; 3. Winding; 31. Air passage; 32. High voltage terminal; 33. Low voltage terminal; 4. Cooling fan. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4 This utility model provides a technical solution: a three-phase dry-type transformer with forced air cooling and a cooling fan is mainly composed of a base 1, an iron core 2, windings 3, a cooling fan 4, a temperature detection component 21, a high-voltage terminal block 32, and a low-voltage terminal block 33.

[0019] The base 1 serves as the supporting foundation for the entire three-phase dry-type transformer. It is made of high-strength and stable materials, such as high-quality steel or high-strength plastic, to ensure that the transformer can be placed stably during operation and withstand the weight of the transformer itself as well as possible vibrations and impacts.

[0020] The iron core 2, mounted on the upper part of the base 1, is the magnetic circuit part of the transformer and is typically composed of stacked silicon steel sheets with high magnetic permeability. The silicon steel sheets undergo special treatment to achieve low hysteresis and eddy current losses, thereby improving the transformer's efficiency and performance. The shape and structure of the iron core 2 are carefully designed to ensure a uniform distribution of the magnetic field and reduce magnetic leakage.

[0021] The iron core 2 has three sets of windings 3 externally, each set of windings 3 performing a different voltage transformation function. The windings 3 are made of high-quality conductive materials, such as copper wire. Each set of windings 3 has internal ventilation channels 31 at both ends. The design of the ventilation channels 31 allows airflow to pass smoothly through the windings 3, carrying away the heat generated during operation. The shape and size of the ventilation channels 31 are optimized according to the structure and heat dissipation requirements of the windings 3 to ensure optimal heat dissipation.

[0022] Each winding 3 is equipped with a cooling fan 4 at both ends, corresponding to the airflow channel 31. The cooling fan 4 uses a combination of high-efficiency, low-noise fan motor and blades, which can generate sufficient airflow during operation to force-cool the winding 3 through the airflow channel 31. The installation position and angle of the cooling fan 4 are precisely adjusted to ensure that the airflow can evenly cover the surface of the winding 3, improving heat dissipation efficiency.

[0023] A temperature detection component 21 is mounted on the side of the iron core 2, with its detection end extending into the interior of the winding 3. The temperature detection component 21 is a PT100 temperature sensor. The PT100 temperature sensor features high precision, high stability, and good linearity, enabling it to accurately detect the temperature of the winding 3 during operation. The temperature detection component 21 is connected to the back-end terminal via a signal line, allowing it to transmit the temperature information of the winding 3 to the back-end terminal in real time.

[0024] The high-voltage output terminal of winding 3 is connected to high-voltage terminal 32, and the low-voltage output terminal of winding 3 is connected to low-voltage terminal 33. Both high-voltage and low-voltage terminals 32 and 33 are made of high-quality conductive material, possessing excellent conductivity and mechanical strength. External cables can be connected to this three-phase dry-type transformer via high-voltage and low-voltage terminals 32 to achieve electrical energy transmission and conversion.

[0025] When the three-phase dry-type transformer is connected and operating, current flows through winding 3. Due to the thermal effect of the current, winding 3 generates heat. Temperature detection component 21 detects the heat value emitted by winding 3 in real time and transmits the detected temperature information to the back-end terminal via a signal line.

[0026] A temperature threshold is preset in the back-end terminal. When the heat value of the winding 3 detected by the temperature detection component 21 exceeds the preset threshold, the back-end terminal sends a start signal to the cooling fan 4, and the cooling fan 4 starts working. The cooling fan 4 generates a strong airflow, which enters the air passage 31 and flows evenly over the surface of the winding 3, carrying away the heat generated by the winding 3, thereby achieving forced air cooling and reducing the temperature of the winding 3.

[0027] As the cooling fan 4 operates, the temperature of the winding 3 gradually decreases. When the temperature detection component 21 detects that the heat value of the winding 3 is lower than the set threshold, the backend terminal will send a stop signal to the cooling fan 4, and the cooling fan 4 will stop working to save energy and reduce noise.

Claims

1. A three-phase dry-type transformer with forced air cooling and a cooling fan, characterized in that, Includes a base (1), an iron core (2) is installed on the upper part of the base (1), and three sets of windings (3) are provided on the outside of the iron core (2). Each set of windings (3) has a pre-reserved air passage (31) at both ends, and a cooling fan (4) corresponding to the air passage (31) is installed at both ends of each set of windings (3).

2. A three-phase dry-type transformer with forced air cooling and a cooling fan as described in claim 1, characterized in that, A temperature detection component (21) is installed on the side of the iron core (2). The detection end of the temperature detection component (21) extends into the winding (3) and is used to detect the temperature of the winding (3) when it is working.

3. A three-phase dry-type transformer with forced air cooling and a cooling fan as described in claim 2, characterized in that, The temperature detection component (21) is a temperature sensor.

4. A three-phase dry-type transformer with forced air cooling and a cooling fan as described in claim 1, characterized in that, The high-voltage output end of the winding (3) is connected to a high-voltage terminal (32), and the low-voltage output end of the winding (3) is connected to a low-voltage terminal (33). An external cable can be connected to the three-phase dry-type transformer through the high-voltage terminal (32) and the low-voltage terminal (33).

5. A three-phase dry-type transformer with forced air cooling and a cooling fan as described in claim 1, characterized in that, The cooling fan (4) is installed at both ends of each winding (3) and its position corresponds to the air passage (31) to achieve forced air cooling of the winding (3).

Images