An oil-immersed transformer with automatic oil level adjustment function

Abstract

This utility model discloses an oil-immersed transformer with automatic oil level adjustment function, including an oil-immersed transformer and a transformer base. A filter assembly is fixed between the oil-immersed transformer and the transformer base. A main oil tank bracket is fixed to one side wall of the oil-immersed transformer. A main oil tank is fixed inside the main oil tank bracket. A secondary oil tank assembly is fixed to one side of the top of the main oil tank. A tube is inserted into the other side of the top of the main oil tank. A sealing element is fixed inside the tube. An oil level gauge is inserted into the sealing element. A buffer assembly is fixed to the top of the tube. Vibration damping protection: The support, damping element, and mounting base in the buffer assembly provide a stable working environment for the oil level gauge. The damping element uses damping materials such as rubber or springs, which can effectively absorb external vibrations, avoid interference with the measurement accuracy of the oil level gauge, and ensure the reliability of oil level monitoring data.

Description

Technical Field

[0001] This utility model relates to the field of oil-immersed transformers, specifically an oil-immersed transformer with an automatic oil level adjustment function. Background Technology

[0002] As the core equipment for power conversion in power systems, oil-immersed transformers are widely used in power transmission and distribution due to their excellent heat dissipation and insulation properties. They provide cooling and insulation for key components such as internal windings and cores through transformer oil, playing a vital role in ensuring the stable operation of power systems.

[0003] However, traditional oil-immersed transformers have many problems in practical applications. On the one hand, during long-term use, transformer oil is prone to mixing with impurities such as metal scraps and fibers. These impurities affect the insulation and cooling performance of the transformer oil, accelerate the aging and damage of internal electrical components, reduce the service life and operational reliability of the transformer, and lack effective filtration devices to treat them. On the other hand, it is difficult to accurately control the oil level in the main tank, relying mostly on manual monitoring and adjustment. This is not only inefficient, but also prone to problems such as untimely monitoring and inaccurate adjustment due to human factors. Once the oil level is abnormal, it may cause transformer overheating, decreased insulation performance and other faults, seriously threatening the safe and stable operation of the power system. At the same time, during the oil level monitoring process, external impurities such as dust and moisture can easily enter the monitoring device, affecting the measurement accuracy. Moreover, there is a lack of effective vibration damping measures, and external vibrations can interfere with the measurement accuracy of the oil level gauge. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an oil-immersed transformer with an automatic oil level adjustment function.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an oil-immersed transformer with automatic oil level adjustment function, including an oil-immersed transformer and a transformer base. The transformer base is provided on both sides of the bottom end of the oil-immersed transformer. A filter assembly is fixed between the oil-immersed transformer and the transformer base. A main oil tank bracket is fixed on one side wall of the oil-immersed transformer. A main oil tank is fixed inside the main oil tank bracket. The bottom end of the main oil tank is connected to the filter assembly through an oil supply pipe. A secondary oil tank assembly is fixed on one side of the top end of the main oil tank. A tube is inserted into the other side of the top end of the main oil tank. A sealing element is fixed inside the tube. An oil level gauge is inserted into the sealing element. A buffer assembly is fixed at the top end of the tube.

[0006] Furthermore, the filtration assembly includes a processing box, which is fixed between the oil-immersed transformer and the transformer base, and is connected to the oil-immersed transformer. An insert plate is inserted into the inside of the processing box, and an impurity filter screen is fixed inside the insert plate.

[0007] Furthermore, the inner wall of the insertion tube has two annular grooves, and the outer wall of the seal is connected to the annular grooves through annular protrusions.

[0008] Furthermore, the auxiliary fuel tank assembly includes an auxiliary fuel tank bracket, and multiple auxiliary fuel tank brackets are fixed at equal intervals on one side of the top of the main fuel tank, with an auxiliary fuel tank fixed inside the auxiliary fuel tank bracket.

[0009] Furthermore, the bottom end of the auxiliary oil tank is connected to the main oil tank via a connecting pipe, and an electric valve is installed inside the connecting pipe.

[0010] Furthermore, the buffer assembly includes a support member, which is equidistantly fixed around the top of the insertion tube. A shock absorber is fixed to the top of the support member, and a mounting base is fixed to the top of the shock absorber. The mounting base is plugged into and connected to the oil level gauge.

[0011] The beneficial effects of this utility model are:

[0012] Transformer oil filtration: The filter assembly installed between the transformer and the base can effectively filter out impurities such as metal debris and fibers from the transformer oil through the impurity filter screen in the treatment box, ensuring that the oil entering the transformer is clean and pure, reducing equipment wear and failure caused by impurities, significantly extending the service life of the transformer, and improving operational reliability.

[0013] Monitoring and Reliable Measurement: The combined design of the tubing, seals, and oil level gauge features highly elastic rubber seals that fit tightly with the annular groove on the inner wall of the tubing, effectively preventing the entry of external dust, moisture, and other impurities, ensuring accurate oil level measurement. The oil level gauge uses a high-precision sensor and display screen, which not only displays the oil level value accurately in real time but also has data transmission capabilities, allowing staff to keep track of the oil level status promptly.

[0014] Vibration damping protection: The support components, damping components, and mounting base in the buffer assembly provide a stable working environment for the oil level gauge. The damping components use damping materials such as rubber or springs, which can effectively absorb external vibrations, avoid interference with the measurement accuracy of the oil level gauge, and ensure the reliability of oil level monitoring data.

[0015] Automatic oil replenishment adjustment: The auxiliary oil tank assembly is evenly supported by the auxiliary oil tank bracket to ensure stable operation of the auxiliary oil tank. The liquid level sensor and control device in the auxiliary oil tank, together with the electric valve in the connecting pipe, can realize automatic oil replenishment and oil discharge functions according to the oil level changes in the main oil tank. When the oil level in the main oil tank drops to the set value, the electric valve automatically opens to replenish oil and closes after returning to normal, realizing automatic oil level adjustment, ensuring the safe and stable operation of the transformer, and reducing the cost and frequency of manual maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 yes Figure 1 Detailed front view of the connection structure.

[0018] Figure 3 yes Figure 1 Detailed cross-sectional view of the connection structure of the main fuel tank on the right.

[0019] Figure 4 yes Figure 1 Top view of the connection structure of the central processing box.

[0020] Figure 5 yes Figure 3 Enlarged detail of the connection structure at point A in the middle.

[0021] Explanation of reference numerals in the attached drawings: 1. Oil-immersed transformer; 2. Processing box; 3. Insert plate; 4. Impurity filter screen; 5. Transformer base; 6. Main oil tank bracket; 7. Main oil tank; 8. Oil delivery pipe; 9. Auxiliary oil tank bracket; 10. Auxiliary oil tank; 11. Insert pipe; 12. Seal; 13. Support component; 14. Shock absorber; 15. Mounting base; 16. Oil level gauge. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0023] See Figures 1-5This is a schematic diagram of the structure of this utility model, illustrating an oil-immersed transformer with automatic oil level adjustment. It includes an oil-immersed transformer 1 and a transformer base 5. The oil-immersed transformer 1, as the core power equipment, typically has a casing made of high-strength cold-rolled steel plate, providing excellent pressure resistance and protection, effectively preventing external environmental interference and damage to internal electrical components. Internally, it houses key components such as windings and a core, used for energy conversion. The transformer base 5 is located on both sides of the bottom of the oil-immersed transformer 1. The transformer base 5 is generally welded from structural steel and has an anti-corrosion treatment. It serves to stably support the oil-immersed transformer 1, ensuring the transformer's stability. To ensure stability during operation, a filter assembly is fixed between the oil-immersed transformer 1 and the transformer base 5. A main oil tank bracket 6 is fixed on one side wall of the oil-immersed transformer 1, which can reliably support the main oil tank 7 to ensure the connection between the main oil tank 7 and other components. The main oil tank 7 is fixed inside the main oil tank bracket 6. The main oil tank 7 is the main container for storing transformer oil. It has a specific oil circuit structure inside to facilitate the circulation of transformer oil. The bottom of the main oil tank 7 is connected to the filter assembly through an oil delivery pipe 8. The oil delivery pipe 8 can ensure that there is no leakage or loss of transformer oil during transmission, so as to ensure that the transmission flow and pressure of the oil meet the system requirements.

[0024] A secondary oil tank assembly is fixed to one side of the top of the main oil tank 7, and a tube 11 is inserted into the other side of the top of the main oil tank 7. The tube 11 is compatible with the installation and use of the seal 12 and the oil level gauge 16. The seal 12 is fixed inside the tube 11. The seal 12 is generally made of rubber and has good elasticity and sealing performance. It can effectively prevent external dust, moisture and other impurities from entering the tube 11 and ensure the accuracy of oil level measurement. Its shape and size match the internal structure of the tube 11 to ensure tightness after installation. The oil level gauge 16 is inserted inside the seal 12. The oil level gauge 16 is an important component for real-time monitoring of the oil level in the main oil tank 7. It adopts a combination of high-precision sensor and display screen to accurately display the oil level value and has data transmission function. It can transmit the oil level information to the monitoring system in real time, so that the staff can keep track of the oil level status in a timely manner. A buffer assembly is fixed to the top of the tube 11.

[0025] The filtration assembly includes a treatment box 2, which is fixed between the oil-immersed transformer 1 and the transformer base 5 and is connected to the oil-immersed transformer 1. The treatment box 2 is made of sturdy metal and can accommodate the insert plate 3 and the impurity filter screen 4, ensuring sufficient flow space for the transformer oil inside. The insert plate 3 is inserted into the inside of the treatment box 2. The insert plate 3 has good mechanical strength and corrosion resistance. Its shape and size are adapted to the internal structure of the treatment box 2, which facilitates the insertion of the plate and makes it easy to replace and clean the impurity filter screen 4. The impurity filter screen 4 is fixed inside the insert plate 3. The impurity filter screen 4 is made of high-precision metal wire mesh, which can effectively filter out impurities such as metal debris and fibers in the transformer oil, ensuring that the oil entering the transformer is clean and pure, thereby extending the service life of the transformer and improving its operational reliability.

[0026] The inner wall of the cannula 11 has two annular grooves, and the outer wall of the seal 12 is connected to the annular grooves through annular protrusions. This design can achieve a tight fit between the seal 12 and the cannula 11, ensuring a sealing effect and preventing external contaminants from entering.

[0027] The auxiliary oil tank assembly includes auxiliary oil tank brackets 9. Multiple auxiliary oil tank brackets 9 are equidistantly fixed to one side of the top of the main oil tank 7. The auxiliary oil tank brackets 9 are made of metal, and their equidistant distribution design can evenly distribute the weight of the auxiliary oil tank 10, ensuring the installation stability of the auxiliary oil tank 10. The auxiliary oil tank 10 is fixed inside the auxiliary oil tank brackets 9. The auxiliary oil tank 10, as an auxiliary oil storage container, is also made of high-quality stainless steel. Its volume is designed according to the oil level adjustment requirements of the main oil tank 7. It is equipped with corresponding liquid level sensors and control devices, which can realize automatic oil replenishment and oil discharge functions. The bottom end of the auxiliary oil tank 10 is connected to the main oil tank 7 through a connecting pipe. The connecting pipe is equipped with an electric valve, which can accurately control the flow of oil according to the instructions of the control system, realizing automatic oil level adjustment between the main oil tank 7 and the auxiliary oil tank 10.

[0028] The buffer assembly includes support members 13, which are equidistantly fixed around the top of the insertion tube 11. This equidistant distribution evenly distributes the weight of the shock absorber 14 and the mounting base 15, ensuring the balance of the entire buffer assembly. The top of the support member 13 is fixed with the shock absorber 14, which is made of damping materials such as rubber or springs, providing excellent shock absorption and buffering performance. This effectively absorbs the impact of external vibrations on the oil level gauge 16, ensuring the measurement accuracy and stability of the oil level gauge 16. The top of the shock absorber 14 is fixed with the mounting base 15, whose shape and size are adapted to the oil level gauge 16, facilitating its installation and removal, and providing reliable fixed support. The mounting base 15 is plugged into the oil level gauge 16.

[0029] When using this utility model:

[0030] When the oil-immersed transformer with automatic oil level adjustment function is working, the transformer oil in the main oil tank 7 flows to the treatment tank 2 through the oil supply pipe 8, and then enters the oil-immersed transformer 1 through the treatment tank 2. After entering the treatment tank 2, the oil passes through the impurity filter screen 4 inside the plug plate 3. The high-precision metal wire mesh filters out impurities such as metal debris and fibers. The cleaned transformer oil enters the oil-immersed transformer 1 to provide cooling and insulation for key components such as windings and core.

[0031] During operation, the oil level gauge 16 monitors the oil level in the main oil tank 7 in real time through a high-precision sensor and displays the data on the display screen. At the same time, it is transmitted to the monitoring system. The seal 12 prevents external impurities from entering and affecting the measurement. Its cooperation with the annular groove of the insertion tube 11 ensures the sealing performance. The support 13, shock absorber 14 and mounting base 15 of the buffer assembly provide a stable working environment for the oil level gauge 16 and avoid vibration from interfering with the measurement accuracy.

[0032] When the oil level in the main oil tank 7 drops to the set value, the electric valve in the connecting pipe at the bottom of the auxiliary oil tank 10 receives a command from the control system and opens. The auxiliary oil tank 10, as an auxiliary oil storage container, uses its internal liquid level sensor and control device to transport transformer oil to the main oil tank 7. The auxiliary oil tank support 9 is evenly distributed to bear the weight, ensuring the stable operation of the auxiliary oil tank 10 until the oil level in the main oil tank 7 returns to normal. Then the electric valve closes, realizing automatic oil level adjustment and ensuring the safe and stable operation of the transformer.

Claims

1. An oil-immersed transformer with automatic oil level adjustment function, comprising an oil-immersed transformer (1) and a transformer base (5), wherein the transformer base (5) is provided on both sides of the bottom end of the oil-immersed transformer (1), characterized in that, A filter assembly is fixed between the oil-immersed transformer (1) and the transformer base (5). A main oil tank bracket (6) is fixed on one side wall of the oil-immersed transformer (1). A main oil tank (7) is fixed inside the main oil tank bracket (6). The bottom of the main oil tank (7) is connected to the filter assembly through an oil supply pipe (8). A secondary oil tank assembly is fixed on one side of the top of the main oil tank (7). A tube (11) is inserted into the other side of the top of the main oil tank (7). A sealing element (12) is fixed inside the tube (11). An oil level gauge (16) is inserted into the sealing element (12). A buffer assembly is fixed at the top of the tube (11).

2. An oil-immersed transformer with automatic oil level adjustment function according to claim 1, characterized in that: The filter assembly includes a processing box (2), which is fixed between the oil-immersed transformer (1) and the transformer base (5), and the processing box (2) is connected to the oil-immersed transformer (1). A plug plate (3) is inserted inside the processing box (2), and an impurity filter screen (4) is fixed inside the plug plate (3).

3. An oil-immersed transformer with automatic oil level adjustment function according to claim 1, characterized in that: The inner wall of the cannula (11) has two annular grooves, and the outer wall of the seal (12) is connected to the annular grooves through annular protrusions.

4. An oil-immersed transformer with automatic oil level adjustment function according to claim 1, characterized in that: The auxiliary fuel tank assembly includes an auxiliary fuel tank bracket (9), and multiple auxiliary fuel tank brackets (9) are fixed at equal intervals on one side of the top of the main fuel tank (7). An auxiliary fuel tank (10) is fixed inside the auxiliary fuel tank bracket (9).

5. An oil-immersed transformer with automatic oil level adjustment function according to claim 4, characterized in that: The bottom end of the auxiliary oil tank (10) is connected to the main oil tank (7) through a connecting pipe, and an electric valve is installed inside the connecting pipe.

6. An oil-immersed transformer with automatic oil level adjustment function according to claim 1, characterized in that: The buffer assembly includes a support member (13), which is fixed equidistantly around the top of the insertion tube (11). A shock absorber (14) is fixed to the top of the support member (13), and a mounting seat (15) is fixed to the top of the shock absorber (14). The mounting seat (15) is connected to the oil level gauge (16).

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