Synchronous cooling and ventilating device for excitation transformer and excitation bus

Abstract

The invention relates to the technical field of transformers, in particular to an excitation transformer and excitation bus synchronous cooling and ventilating device which comprises a shell, a cooling fan, an air duct structure, a temperature sensor and a control unit, the interior of the shell is used for arranging an excitation transformer body and an excitation bus, and the air duct structure is formed in the shell; the air duct structure is arranged along the peripheral side where the excitation transformer body and the excitation bus are located in an attached mode, the cooling fan is arranged at an air inlet of the air duct structure, the temperature sensor is arranged on the excitation transformer body and the excitation bus, and the control unit is electrically connected with the temperature sensor and the cooling fan. Synchronous cooling of the excitation transformer and the excitation bus is achieved, the heat dissipation efficiency is improved, the maintenance cost is reduced, and occupied space is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to an excitation transformer and an excitation bus synchronous cooling and ventilation device. Background Art

[0002] With the development of power systems, the excitation transformer is an important equipment in the power system, and its stable operation is crucial to the safety and reliability of the entire system. However, in actual operation, the excitation transformer and the excitation busbar often face the risk of performance degradation or even damage due to excessive temperature rise.

[0003] In the prior art, the cooling and ventilation devices for the excitation transformer and the excitation busbar are mostly designed separately, that is, the excitation transformer and the excitation busbar are heat-dissipated separately. Although this method can reduce the temperature rise of the equipment to a certain extent, it has the following disadvantages: first, the heat dissipation efficiency is not high, and the space cannot be fully utilized for heat exchange; second, the maintenance cost is high, and two sets of heat dissipation systems need to be maintained separately; third, it occupies a large space, which is not conducive to the compact design of the equipment. Summary of the invention

[0004] In order to solve the problems in the background technology, the present invention proposes a synchronous cooling and ventilation device for an excitation transformer and an excitation bus. The present invention realizes synchronous cooling of the excitation transformer and the excitation bus, improves heat dissipation efficiency, reduces maintenance costs, and reduces space occupancy.

[0005] To solve the above problems, the present invention adopts the following technical solutions: a synchronous cooling and ventilation device for an excitation transformer and an excitation bus, comprising a shell, a heat dissipation fan, a duct structure, a temperature sensor, and a control unit. The interior of the shell is used to set an excitation transformer body and the excitation bus. An air duct structure is formed inside the shell. The air duct structure is arranged in close contact along the circumference of the excitation transformer body and the excitation bus. The heat dissipation fan is arranged at the air inlet of the duct structure. The temperature sensor is arranged on the excitation transformer body and the excitation bus. The control unit is electrically connected to the temperature sensor and the heat dissipation fan.

[0006] Furthermore, the excitation transformer body includes a transformer shell, an iron core, a winding, an oil tank and a radiator, the transformer shell is arranged in the outer shell, the iron core and the winding are arranged in the transformer shell, the winding is wound on the iron core, the oil tank is arranged in the transformer shell and in contact with the iron core and the winding, and the radiator is arranged in the transformer shell on a side away from the oil tank.

[0007] Furthermore, the iron core is made of laminated silicon steel sheets with high magnetic permeability.

[0008] Furthermore, the winding is made of high-purity copper wire.

[0009] Furthermore, the air duct structure includes multiple air inlets and multiple air outlets, the multiple air inlets are located directly opposite to the cooling fan, and the multiple air outlets are arranged on the housing at positions opposite to the multiple air inlets.

[0010] Furthermore, the air duct structure also includes a guide plate or a guide groove, and the guide plate or the guide groove is arranged inside the shell.

[0011] Furthermore, the control unit includes a controller body and an alarm, the controller body is electrically connected to the temperature sensor and the cooling fan, and the alarm is electrically connected to the temperature sensor.

[0012] Beneficial effects of the present invention: The present invention facilitates the construction of the air duct structure and the uniform distribution of air by arranging the excitation transformer body and the excitation busbar. The air duct structure is closely fitted to the excitation transformer body and the excitation busbar, which can optimize the airflow path and ensure that cold air can flow evenly and efficiently through the key heat dissipation areas of the excitation transformer body and the excitation busbar. The heat dissipation fan can ensure that the transformer can maintain sufficient heat dissipation capacity even under high load. Compared with traditional transformer heat dissipation devices, the present invention ensures synchronous cooling of the excitation transformer body and the excitation busbar through an integrated design, improves heat dissipation efficiency, and the same heat dissipation system simultaneously meets the heat dissipation of the excitation transformer body and the excitation busbar, reducing maintenance costs. At the same time, the integrated structure reduces space occupancy and makes the structure more compact. DETAILED DESCRIPTION

[0014] The present invention facilitates the construction of the air duct structure and the uniform distribution of air by arranging the excitation transformer body and the excitation busbar. The air duct structure is closely fitted to the excitation transformer body and the excitation busbar, which can optimize the airflow path and ensure that cold air can flow evenly and efficiently through the key heat dissipation areas of the excitation transformer body and the excitation busbar. The heat dissipation fan can ensure that the transformer can maintain sufficient heat dissipation capacity even under high load. Compared with traditional transformer heat dissipation devices, the present invention ensures that the excitation transformer body and the excitation busbar are cooled synchronously through an integrated design, thereby improving the heat dissipation efficiency. The same heat dissipation system can simultaneously meet the heat dissipation of the excitation transformer body and the excitation busbar, reducing maintenance costs. At the same time, the integrated structure reduces space occupancy and makes the structure more compact.

[0015] Specifically, a synchronous cooling and ventilation device for an excitation transformer and an excitation busbar includes a shell, a cooling fan, a duct structure, a temperature sensor, and a control unit. The interior of the shell is used to set an excitation transformer body and the excitation busbar. The interior of the shell forms an duct structure, and the duct structure is arranged in close contact along the circumference of the excitation transformer body and the excitation busbar. The cooling fan is arranged at the air inlet of the duct structure, the temperature sensor is arranged on the excitation transformer body and the excitation busbar, and the control unit is electrically connected to the temperature sensor and the cooling fan.

[0016] Furthermore, the excitation transformer body includes a transformer shell, an iron core, a winding, an oil tank and a radiator, the transformer shell is arranged in the outer shell, the iron core and the winding are arranged in the transformer shell, the winding is wound on the iron core, the oil tank is arranged in the transformer shell and in contact with the iron core and the winding, and the radiator is arranged in the transformer shell on a side away from the oil tank.

[0017] Furthermore, the iron core is made of laminated silicon steel sheets with high magnetic permeability.

[0018] Furthermore, the winding is made of high-purity copper wire.

[0019] Furthermore, the air duct structure includes multiple air inlets and multiple air outlets, the multiple air inlets are located directly opposite to the cooling fan, and the multiple air outlets are arranged on the housing at positions opposite to the multiple air inlets.

[0020] Furthermore, the air duct structure also includes a guide plate or a guide groove, and the guide plate or the guide groove is arranged inside the shell.

[0021] Furthermore, the control unit includes a controller body and an alarm, the controller body is electrically connected to the temperature sensor and the cooling fan, and the alarm is electrically connected to the temperature sensor.

[0022] When the present invention is used, the excitation transformer body and the excitation bus are installed in a specific housing to ensure that the layout between the excitation transformer body and the excitation bus is reasonable, so as to facilitate the construction of the heat dissipation duct and the uniform distribution of cold air. The duct structure is designed with multiple air inlets and air outlets. The air inlet is located directly opposite the heat dissipation fan, and the air outlet is set at a position opposite to the air inlet to effectively discharge hot air. A guide plate or guide groove should be set inside the air duct to optimize the air flow path to ensure that the cold air can flow evenly and efficiently through the key heat dissipation area of ​​the excitation transformer body and the excitation bus. A heat dissipation fan with suitable power and speed is selected and installed to ensure that sufficient heat dissipation capacity can be maintained even under the highest load. The fan should be designed to have an adjustable speed so that it can be intelligently controlled according to the temperature signal fed back by the temperature sensor, and the temperature sensor is installed at the key parts of the excitation transformer body and the excitation bus. The temperature sensor can accurately and quickly sense the temperature of the surface of the device and transmit the temperature signal to the control unit in real time. In order to ensure the measurement accuracy, the control unit should have the functions of data acquisition, processing, analysis and control, be able to receive the signal of the temperature sensor, and calculate the optimal speed of the cooling fan according to the preset control algorithm. The alarm will sound an alarm in time when the equipment is abnormal. Compared with the traditional transformer heat dissipation device, the present invention ensures the synchronous cooling of the excitation transformer body and the excitation busbar through an integrated design, improves the heat dissipation efficiency, and the same heat dissipation system can simultaneously meet the heat dissipation of the excitation transformer body and the excitation busbar, reducing the maintenance cost. At the same time, the integrated structure reduces the space occupied and makes the structure more compact.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A synchronous cooling and ventilation device for an excitation transformer and an excitation bus, characterized in that: It includes a shell, a cooling fan, an air duct structure, a temperature sensor, and a control unit. The interior of the shell is used to set the excitation transformer body and the excitation bus. The interior of the shell forms an air duct structure, and the air duct structure is arranged in close contact along the circumference of the excitation transformer body and the excitation bus. The cooling fan is arranged at the air inlet of the air duct structure, the temperature sensor is arranged on the excitation transformer body and the excitation bus, and the control unit is electrically connected to the temperature sensor and the cooling fan.

2. The synchronous cooling and ventilation device for an excitation transformer and an excitation bus according to claim 1 is characterized in that: The excitation transformer body includes a transformer shell, an iron core, a winding, an oil tank and a radiator. The transformer shell is arranged in the outer shell, the iron core and the winding are arranged in the transformer shell, the winding is wound on the iron core, the oil tank is arranged in the transformer shell and in contact with the iron core and the winding, and the radiator is arranged in the transformer shell on a side away from the oil tank.

3. The synchronous cooling and ventilation device for an excitation transformer and an excitation bus according to claim 2 is characterized in that: The iron core is made of laminated silicon steel sheets with high magnetic permeability.

4. The synchronous cooling and ventilation device for an excitation transformer and an excitation bus according to claim 2 is characterized in that: The winding is made of high-purity copper wire.

5. The synchronous cooling and ventilation device for an excitation transformer and an excitation bus according to claim 1 is characterized in that: The air duct structure includes a plurality of air inlets and a plurality of air outlets, wherein the plurality of air inlets are located directly opposite to the heat dissipation fan, and the plurality of air outlets are arranged on the housing at positions opposite to the plurality of air inlets.

6. The synchronous cooling and ventilation device for an excitation transformer and an excitation bus according to claim 1 is characterized in that: The air duct structure further includes a guide plate or a guide groove, and the guide plate or the guide groove is arranged inside the shell.

7. The synchronous cooling and ventilation device for an excitation transformer and an excitation bus according to claim 1 is characterized in that: The control unit includes a controller body and an alarm. The controller body is electrically connected to the temperature sensor and the cooling fan. The alarm is electrically connected to the temperature sensor.