Oil supplementing device for oil type transformer
By designing an oil-type transformer oil replenishment device containing sensors and PLC controllers, the problems of blockage of oil pipes and poor heat dissipation effects in the oil-type transformer are solved, and the self-cleaning of oil and heat dissipation effects of oil are improved.
Patent Information
- Application Number
- CN202421276063.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-05
AI Technical Summary
After long-term use of the oil transformer, the absorbed moisture, dust and oxidized oil scale will block the oil pipe, reduce the quality of the oil, affect the insulation and heat dissipation effect, and the heat dissipation effect of the oil cannot be fully utilized when the temperature rises.
An oil-type transformer oil replenishment device is designed, including transformer, oil pillow, capsule bag, pump, filter, temperature sensor, turbidity sensor and PLC controller. The device monitors the oil quality and oil temperature in real time, controls the pump to perform oil circulation and filtration, automatically balances the oil surface, and increases the heat dissipation effect.
It achieves the improvement of the self-cleaning and heat dissipation effect of the oil, extends the service life of the oil, and ensures the normal operation and efficient heat dissipation of the transformer.
Smart Images
Figure CN222562411U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to an oil-filling device for an oil-type transformer. Background Art
[0002] Oil-immersed transformer, also known as oil-immersed transformer, is a structural form of transformer, that is, the coil of the transformer is immersed in oil, relying on oil as a cooling medium. The role of oil is insulation, heat dissipation, and arc extinguishing. Due to the need for fire prevention, oil-immersed transformers are generally installed in a separate transformer room or outdoors. They are resistant to high temperature, moisture, high stability, radiation, large size, low cost, simple maintenance, good heat dissipation, strong overload capacity, and adaptable to a wide range of environments. Oil-immersed transformers are suitable for power systems, industrial and mining enterprises, transportation, postal and telecommunications departments, scientific research units, etc. The oil pillow is used to store and replenish oil in transformers. When the load on the transformer increases and the oil temperature rises, the oil in the transformer expands. At this time, excess oil will flow into the oil pillow. Conversely, when the temperature drops, the oil in the oil pillow will flow into the transformer again, automatically adjusting the oil level to ensure that the transformer is full of oil. However, over a long period of time, the moisture, dust and oxidized oil stains absorbed from the air will clog the oil pipes and reduce the quality of the oil, affecting its insulation and heat dissipation functions. Moreover, when the temperature rises, the heat dissipation effect of the oil cannot be fully utilized. Therefore, further improvements are needed. Utility Model Content
[0003] In view of the above technical problems, the utility model provides an oil-type transformer oil replenishing device which is self-cleaning and has good heat dissipation effect.
[0004] To solve the above technical problems, the utility model discloses an oil-type transformer oil filling device, comprising a transformer and an oil pillow. The top of the transformer is fixedly connected to the oil pillow through a connecting piece, the transformer is connected to the oil pillow through a pipeline, a capsule bag is arranged in the oil pillow, the bag opening of the capsule bag passes through the top of the oil pillow and is fixedly connected to a respirator through a pipeline, a vent plug and an oil filling port are fixedly connected to the top of the oil pillow, an oil level indicator is fixedly connected to one side of the oil pillow, a pump is fixedly connected to the top of the transformer, the input end of the pump is connected to the bottom of the transformer through an oil inlet pipe, the output end of the pump is connected to the top of the oil pillow through an oil outlet pipe, a filter is also fixedly connected to the oil outlet pipe, a temperature sensor and a turbidity sensor are fixedly connected inside the transformer, a controller is fixedly connected to the top of the transformer, the controller is communicatively connected to the temperature sensor and the turbidity sensor, and the pump is controlled by the controller.
[0005] Furthermore, the transformer and the bottom of the oil pillow are respectively fixedly connected with a first oil drain port and a second oil drain port.
[0006] Furthermore, the controller adopts a PLC controller.
[0007] Compared with the prior art, the utility model has the following advantages:
[0008] The utility model monitors the oil quality and temperature in the transformer in real time. When impurities and oil stains appear in the oil, the turbidity sensor sends a signal to the controller, which controls the pump to start running, circulates the oil in the transformer, and filters the impurities and oil stains through the filter. When the thermometer detects that the oil temperature is too high, the controller controls the pump to start running, and the oil in the transformer and the oil pillow circulates to increase the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the structure of the utility model.
[0010] In the figure: 1. transformer, 2. oil pillow, 3. capsule bag, 4. oil level indicator, 5. respirator, 6. pump, 7. filter, 8. controller, 9. temperature sensor, 10. turbidity sensor, 11. vent plug, 12. oil filling port, 13. first oil drain port, 14. second oil drain port, 15. connector. DETAILED DESCRIPTION
[0011] The utility model will be further described below in conjunction with the accompanying drawings.
[0012] like Figure 1 The oil-type transformer oil replenishing device shown in the figure comprises a transformer 1 and an oil pillow 2. The top of the transformer 1 is fixedly connected to the oil pillow 2 through a connector 15. The transformer 1 and the oil pillow 2 are connected through a pipeline. A capsule bag 3 is arranged in the oil pillow 2. The capsule bag 3 is made of soft material. The bag opening of the capsule bag 3 passes through the top of the oil pillow 2 and is fixedly connected to a respirator 5 through a pipeline. The respirator 5 filters the air entering the capsule bag 3. The outer side of the bag opening of the capsule bag 3 is sealed with the oil pillow 2. The top of the oil pillow 2 is fixedly connected with a vent plug 11 and an oil replenishing port 12. One side of the oil pillow 2 is fixedly connected with an oil level indicator 4 for observing the oil level. The oil level in the pillow 2, a pump 6 is fixedly connected to the top of the transformer 1, the input end of the pump 6 is connected to the bottom of the transformer 1 through an oil inlet pipe, and the output end of the pump 6 is connected to the top of the oil pillow 2 through an oil outlet pipe, so as to facilitate the circulation, filtration and removal of impurities and oil stains at the bottom. A filter 7 is also fixedly connected to the oil outlet pipe to filter impurities and oil stains during the circulation process. A temperature sensor 9 and a turbidity sensor 10 are fixedly connected inside the transformer 1, and a controller 8 is fixedly connected to the top of the transformer 1. The controller 8 is communicated with the temperature sensor 9 and the turbidity sensor 10, and the pump 6 is controlled by the controller 8.
[0013] In order to facilitate the replacement of oil when the oil service life is too long, a first oil drain port 13 and a second oil drain port 14 are fixedly connected to the bottom of the transformer 1 and the oil pillow 2 respectively.
[0014] In order to achieve more intelligent control, the controller 8 adopts a PLC controller, which can automatically control the pump 6 to circulate the oil after reaching the set turbidity and temperature conditions.
[0015] The working process of this embodiment is as follows:
[0016] The inner side of the capsule bag 3 is connected to the atmosphere through the respirator 5, and the outer side is in contact with the oil. When the oil temperature in the transformer 1 increases and expands, the oil level in the oil pillow 2 also rises, and the capsule bag 3 exhausts air to the outside. Conversely, when the oil level in the oil pillow 2 drops, the capsule bag 3 inhales air from the outside to automatically balance the pressure inside and outside the bag. When the temperature sensor 9 detects that the oil temperature is higher than the set temperature, the PLC controller controls the pump 6 to start running, and the cooling effect on the transformer 1 is increased through the circulation of the oil until the oil temperature drops. When the turbidity sensor 10 detects that the oil is turbid, the PLC controller starts to operate. The controller controls the pump 6 to start running, and the oil circulates through the filter 7 to filter out impurities and oil stains in the oil, thereby cleaning the oil and ensuring the effect of the oil. The air vent 11 is used to discharge the air in the oil pillow 2, and the oil replenishing port 12 is used to replenish the oil to the oil pillow 2. The oil level indicator 4 is convenient for observing the oil level in the oil pillow 2. The first oil drain port 13 and the second oil drain port 14 are used to facilitate the replacement of the oil in the transformer 1 and the oil pillow 2. The respirator 5 is used to filter the air entering the capsule bag 3 to prevent impurities and dust from entering the capsule bag 3.
Claims
1. An oil-type transformer oil replenishing device, comprising a transformer (1) and an oil pillow (2), wherein the top of the transformer (1) is fixedly connected to the oil pillow (2) through a connector (15), the transformer (1) and the oil pillow (2) are connected through a pipeline, a capsule bag (3) is arranged inside the oil pillow (2), the bag opening of the capsule bag (3) passes through the top of the oil pillow (2) and is fixedly connected to a respirator (5) through a pipeline, a vent plug (11) and an oil replenishing port (12) are fixedly connected to the top of the oil pillow (2), and an oil level indicator (4) is fixedly connected to one side of the oil pillow (2), characterized in that: A pump (6) is fixedly connected to the top of the transformer (1); the input end of the pump (6) is connected to the bottom of the transformer (1) through an oil inlet pipe; the output end of the pump (6) is connected to the top of the oil pillow (2) through an oil outlet pipe; a filter (7) is also fixedly connected to the oil outlet pipe; a temperature sensor (9) and a turbidity sensor (10) are fixedly connected inside the transformer (1); a controller (8) is fixedly connected to the top of the transformer (1); the controller (8) is in communication connection with the temperature sensor (9) and the turbidity sensor (10); and the pump (6) is controlled by the controller (8).
2. The oil-type transformer oil replenishing device according to claim 1 is characterized in that: The bottoms of the transformer (1) and the oil pillow (2) are respectively fixedly connected with a first oil drain port (13) and a second oil drain port (14).
3. The oil-type transformer oil replenishing device according to claim 1 is characterized in that: The controller (8) is a PLC controller.