Oil immersed transformer with oil management system

Abstract

The utility model discloses an oil immersed transformer with an oil management system, which comprises a transformer body, a pressure oil tank and an active heat dissipation component, the active heat dissipation component is arranged on one side of the transformer body, the pressure oil tank is arranged at the top of the transformer body, and the pressure oil tank is used for buffering the volume change of oil; the temperature of oil liquid of the transformer is detected in real time through the active heat dissipation assembly, and when the temperature of the oil liquid of the transformer exceeds the working temperature, a radiator in the active heat dissipation assembly is matched with a fan to rapidly dissipate heat of the oil liquid; the volume change of oil is buffered through the closed pressure oil tank, so that the oil is prevented from being in direct contact with air, and the effect of reducing the deterioration speed of the oil is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-immersed transformers, in particular to an oil-immersed transformer with an oil management system. Background Art

[0002] An oil-immersed transformer is a new type of high-performance transformer with a more rational structure and superior performance. It uses oil as the primary insulation and cooling medium. Most existing oil-immersed transformers use passive cooling, where the oil dissipates heat through the transformer's external fins. However, under heavy loads, this passive cooling method cannot quickly cool the transformer. Furthermore, the oil expands as it heats up. Existing solutions use an oil pillow to buffer changes in oil volume. However, existing oil pillows are directly connected to the outside world to balance air pressure, which causes the oil in the pillow to deteriorate quickly, affecting the transformer's insulation performance. Therefore, to address this issue, an oil-immersed transformer with an oil management system has been designed. Utility Model Content

[0003] In view of the shortcomings of existing oil-immersed transformers, the purpose of the utility model is to provide an oil-immersed transformer with an oil management system, which has the advantages of active heat dissipation and slowing down the deterioration of oil.

[0004] To achieve the above-mentioned object, the present invention adopts a technical solution: an oil-immersed transformer with an oil management system, comprising a transformer body, a pressure oil tank, and an active heat dissipation component. The active heat dissipation component is provided on one side of the transformer body, and a pressure oil tank is provided on the top of the transformer body. The pressure oil tank is used to buffer the volume change of the oil;

[0005] The active heat dissipation assembly includes an oil pump, a motor, a radiator, a fan and a transmission belt. The oil pump inlet is connected to the bottom of the transformer body through a connecting pipe, the oil pump outlet is connected to the radiator inlet, and the radiator outlet is connected to the top of the transformer body through a connecting pipe. The radiator is fixedly connected to one side of the transformer body through a bracket, the fan is arranged on the outside of the radiator through a bracket, the motor is fixed to the outside of the oil pump through a bracket, the motor output shaft is connected to the oil pump input end, and the transmission belt is sleeved on the motor output shaft and the outer edge of the fan shaft for transmission;

[0006] Preferably, the active heat dissipation component further comprises a temperature sensor, which is arranged in the transformer body; when the temperature exceeds the operating temperature of the transformer oil, the temperature sensor sends a signal for controlling the operation of the active heat dissipation component;

[0007] Preferably, the pressure oil tank comprises a tank body, an oil delivery pipe and a pressure airbag, the tank body is connected to the oil storage cavity in the transformer body through the oil delivery pipe, and a pressure airbag is provided on the inner side wall of the tank body, and the pressure airbag is used to force the oil in the tank body into the transformer body;

[0008] Further preferably, the pressure airbag is made of elastic material and has the ability to stretch;

[0009] Preferably, the active heat dissipation component further comprises a replaceable filter device, the filter device being arranged at the radiator outlet and being used for filtering impurities in the transformer oil;

[0010] The beneficial effects of the utility model are: 1. The transformer oil temperature is detected in real time through the active heat dissipation component. When the transformer oil temperature exceeds the operating temperature, the radiator in the active heat dissipation component cooperates with the fan to quickly dissipate heat from the oil; 2. The closed pressure oil tank buffers the volume change of the oil, thereby preventing the oil from directly contacting the air, thereby achieving the effect of slowing down the deterioration of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a partial cross-sectional structural view of the utility model.

[0012] Figure 2 This is a structural view of the active heat dissipation component of the utility model.

[0013] Figure 3 This is a cross-sectional structural view of the pressure oil tank of the utility model. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0015] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0016] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "provided with," and "set" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0017] See also Figures 1 to 3 , the embodiments of the present utility model include:

[0018] An oil-immersed transformer with an oil management system includes a transformer body 1, a pressure oil tank 2, and an active heat dissipation component 3. The active heat dissipation component 3 is provided on one side of the transformer body 1, and the pressure oil tank 2 is provided on the top of the transformer body 1. The pressure oil tank 2 is used to buffer changes in oil volume.

[0019] The active heat dissipation component 3 includes an oil pump 31, a motor 32, a radiator 33, a fan 34 and a transmission belt 35. The inlet of the oil pump 31 is connected to the bottom of the transformer body 1 through a connecting pipe, the outlet of the oil pump 31 is connected to the inlet of the radiator 33, and the outlet of the radiator 33 is connected to the top of the transformer body 1 through a connecting pipe. The radiator 33 is fixedly connected to one side of the transformer body 1 through a bracket, the fan 34 is arranged on the outside of the radiator 33 through a bracket, the motor 32 is fixed to the outside of the oil pump 31 through a bracket, the output shaft of the motor 32 is connected to the input end of the oil pump 31, and the transmission belt 35 is sleeved on the output shaft of the motor 32 and the outer edge of the rotating shaft of the fan 34 for transmission;

[0020] The active heat dissipation component 3 also has a temperature sensor 4, which is arranged in the transformer body 1; when the temperature exceeds the operating temperature of the transformer oil, the temperature sensor 4 sends a signal to control the operation of the active heat dissipation component 3;

[0021] The pressure oil tank 2 comprises a tank body 21, an oil delivery pipe 22 and a pressure airbag 23. The tank body 21 is connected to the oil storage cavity in the transformer body 1 through the oil delivery pipe 22. The pressure airbag 23 is provided on the inner side wall of the tank body 21. The pressure airbag 23 is used to force the oil in the tank body 21 into the transformer body 1.

[0022] The pressure airbag 23 is made of elastic material and has the ability to stretch;

[0023] The active heat dissipation component 3 also has a replaceable filter device 5, which is arranged at the outlet of the radiator 33 and is used to filter impurities in the transformer oil;

[0024] Through the above settings, in the actual working process, its specific working principle is as follows:

[0025] When the temperature exceeds the operating temperature of the transformer oil, the temperature sensor 4 sends a signal to control the motor 32 in the active heat dissipation component 3 to start. The motor 32 starts to drive the oil pump 31 to pump the oil at the bottom of the transformer to the top for circulation. During this process, the oil flows through the radiator 33 to dissipate heat first, and then passes through the filter device 5 at the outlet of the radiator 33 to filter out impurities;

[0026] While the oil pump 31 is working, a transmission belt 35 is provided on the outer edge of the output shaft of the motor 32 and the rotating shaft of the fan 34, so that the fan 34 rotates synchronously to blow air toward the radiator 33, thereby accelerating the cooling speed of the oil inside the transformer;

[0027] When the temperature of the oil inside the transformer rises, its volume increases. Since the internal space of the transformer is fixed, the oil enters the tank body 21 through the oil pipe 22, thereby compressing the pressure airbag 23 in the tank body 21. When the temperature of the oil inside the transformer drops and its volume decreases, the pressure airbag 23 in the tank body 21 forces the oil into the transformer body 1, thereby buffering the change in oil volume. During the entire process, the oil inside the transformer does not come into contact with the outside air, thereby slowing down the rate of oil deterioration.

[0028] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An oil-immersed transformer with an oil management system, characterized in that: It includes a transformer body, a pressure oil tank and an active heat dissipation component. The active heat dissipation component is provided on one side of the transformer body, and a pressure oil tank is provided on the top of the transformer body. The pressure oil tank is used to buffer the volume change of the oil; The active heat dissipation component includes an oil pump, a motor, a radiator, a fan and a transmission belt. The oil pump inlet is connected to the bottom of the transformer body through a connecting pipe, the oil pump outlet is connected to the radiator inlet, and the radiator outlet is connected to the top of the transformer body through a connecting pipe. The radiator is fixedly connected to one side of the transformer body through a bracket, the fan is arranged on the outside of the radiator through a bracket, the motor is fixed to the outside of the oil pump through a bracket, the motor output shaft is connected to the oil pump input end, and the transmission belt is sleeved on the motor output shaft and the outer edge of the fan shaft for transmission.

2. The oil-immersed transformer with an oil management system according to claim 1, characterized in that: The active heat dissipation component further has a temperature sensor, which is arranged in the transformer body.

3. The oil-immersed transformer with an oil management system according to claim 1, characterized in that: The pressure oil tank comprises a tank body, an oil pipeline and a pressure airbag. The tank body is connected to the oil storage cavity in the transformer body through the oil pipeline. The inner side wall of the tank body is provided with a pressure airbag, which is used to force the oil in the tank body into the transformer body.

4. The oil-immersed transformer with an oil management system according to claim 3, characterized in that: The pressure airbag is made of elastic material and has the ability to expand and contract.

5. The oil-immersed transformer with an oil management system according to claim 1, characterized in that: The active heat dissipation component also has a replaceable filter device, which is arranged at the radiator outlet and is used to filter impurities in the transformer oil.

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