Device for detecting sealing performance of oil-immersed transformer

Abstract

The utility model provides an oil-immersed transformer sealing performance detection device, which relates to an oil-immersed transformer detection device and comprises a transformer assembly. One side of the top end of the body is fixedly connected with an oil tank; a clamping and positioning assembly; the clamping and positioning assembly comprises two bidirectional air cylinders, and the driving ends of the bidirectional air cylinders are fixedly connected with telescopic rods. According to the design, tiny leakage signals can be efficiently captured through the ultrasonic detection technology, compared with manual detection, precision and sensitivity are greatly improved, stable clamping and accurate detection of the oil tank are achieved through cooperation of the bidirectional air cylinder and the ultrasonic detector, the oil tank detection device can adapt to oil tanks of different sizes, practicability is greatly improved, and the detection device is suitable for popularization and application. And after an abnormal signal is found, the detection position can be adjusted in time, and multiple times of detection are carried out to ensure that a problem area is accurately positioned, so that the reliability and the effectiveness of detection are improved.

Description

Technical Field

[0001] This utility model relates to a testing device for oil-immersed transformers, and more particularly to a testing device for the sealing performance of oil-immersed transformers. Background Technology

[0002] An oil-immersed transformer is a type of power transformer in which the core and windings are completely submerged in insulating oil. This design provides excellent electrical insulation and cooling, helps reduce noise and improves the fire resistance of the equipment, and is suitable for high-load and high-power applications. However, it is relatively expensive and may have some environmental impact.

[0003] While some transformers in the current technology employ leak-proof designs and sealing materials, the sealing effect may gradually fail due to factors such as vibration, temperature changes, and aging during long-term operation, especially at joints and valves, where poor sealing is highly likely to occur. Furthermore, the sealing performance testing of most transformers on the market still relies on manual inspection and periodic maintenance, resulting in low accuracy and efficiency, and failing to detect minor leaks or potential sealing hazards in a timely manner.

[0004] Therefore, this utility model provides a device for testing the sealing performance of oil-immersed transformers. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a device for testing the sealing performance of oil-immersed transformers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an oil-immersed transformer sealing performance testing device, comprising;

[0007] Transformer assembly; the transformer assembly includes a group, and an oil tank is fixedly connected to one side of the top of the group;

[0008] A clamping and positioning assembly; the clamping and positioning assembly includes two bidirectional cylinders, the driving end of each bidirectional cylinder is fixedly connected to a telescopic rod, the adjacent ends of the two telescopic rods are fixedly connected to a connecting rod, and the end of the telescopic rod away from the bidirectional cylinder is fixedly connected to a retaining pad.

[0009] The detection component includes a hollow support rod slidably connected to a pad, a slider slidably connected to the outside of the hollow support rod, and an ultrasonic detector mounted on the outside of the slider.

[0010] In a preferred embodiment, a stop block is provided on the outside of the oil tank, and both the slider and the stop block have threaded grooves inside.

[0011] In a preferred embodiment, the slider and the abutment are internally threadedly connected by bolts, and the threaded groove is engaged with the outside of the oil tank by the bolts.

[0012] In a preferred embodiment, the adjacent ends of the two gaskets engage with the two ends of the oil tank.

[0013] In a preferred embodiment, a transformer body is fixedly connected to the top of the assembly, and a heat sink is fixedly connected to the outside of the assembly.

[0014] In a preferred embodiment, the bottom end of the collective is fixedly connected to a base.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] This invention utilizes a bidirectional cylinder to drive the telescopic rod and connecting rod in synergy, ensuring the gasket fits tightly against both ends of the oil tank, thus stably fixing the tank. After securing the tank, the slider is operated to move the ultrasonic detector along the hollow support rod to the predetermined detection position. Bolts are then used to fasten the slider to the outside of the tank. The ultrasonic detector emits ultrasonic signals and receives signals reflected from inside the tank. By analyzing the signal intensity and propagation time, the system determines whether there is a leak in the tank's seal. This design, using ultrasonic detection technology, can efficiently capture signals of minute leaks, significantly improving accuracy and sensitivity compared to manual inspection. Furthermore, the combination of the bidirectional cylinder and the ultrasonic detector achieves stable clamping and precise detection of the oil tank, adapting to tanks of different sizes and greatly increasing practicality. Moreover, upon detecting abnormal signals, the detection position can be adjusted promptly, and multiple tests can be performed to ensure accurate location of the problem area, thereby improving the reliability and effectiveness of the detection. Attached Figure Description

[0017] Figure 1 A perspective view of the oil-immersed transformer sealing performance testing device provided by this utility model;

[0018] Figure 2 This is a side view of the oil-immersed transformer sealing performance testing device provided by this utility model;

[0019] Figure 3 A schematic diagram of the clamping and positioning assembly structure of the oil-immersed transformer sealing performance testing device provided by this utility model;

[0020] Figure 4 A schematic diagram of the testing component structure of the oil-immersed transformer sealing performance testing device provided by this utility model.

[0021] Legend:

[0022] 1. Transformer assembly; 11. Assembly; 12. Oil tank; 13. Transformer body; 14. Heat sink; 15. Base;

[0023] 2. Clamping and positioning assembly; 21. Two-way cylinder; 22. Telescopic rod; 23. Connecting rod; 24. Clip;

[0024] 3. Detection components; 31. Hollow support rod; 32. Slider; 33. Ultrasonic detector; 34. Abutment; 35. Threaded groove; 36. Bolt. Detailed Implementation

[0025] 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.

[0026] like Figure 1 As shown, this embodiment provides a technical solution: an oil-immersed transformer sealing performance testing device, comprising;

[0027] Transformer assembly 1; Transformer assembly 1 includes a group 11, an oil tank 12 is fixedly connected to one side of the top of the group 11, a transformer body 13 is fixedly connected to the top of the group 11, a heat sink 14 is fixedly connected to the outside of the group 11, and a base 15 is fixedly connected to the bottom of the group 11.

[0028] The assembly 11 serves as the basic framework for the entire transformer assembly 1, providing support and protection for the transformer body 13 and other components. The oil tank 12 stores insulating oil for the oil-immersed transformer, providing insulation and cooling functions. The design of the oil tank 12 helps maintain the amount of oil inside the transformer, ensuring a sufficient supply of oil during operation, thereby guaranteeing the transformer's insulation performance and cooling effect. The transformer body 13 is the core part of the transformer, responsible for the conversion and transmission of electrical energy. The heat sink 14 helps dissipate the heat generated by the transformer during operation, keeping the transformer's operating temperature within a safe range. The base 15 provides stable support for the transformer, ensuring that the transformer remains stable in various environments.

[0029] like Figure 1 - Figure 3As shown, the clamping and positioning assembly 2 includes a bidirectional cylinder 21. Two bidirectional cylinders 21 are provided. The drive end of the bidirectional cylinder 21 is fixedly connected to a telescopic rod 22. The adjacent ends of the two telescopic rods 22 are fixedly connected to a connecting rod 23. The end of the telescopic rod 22 away from the bidirectional cylinder 21 is fixedly connected to a pad 24. The adjacent ends of the two pads 24 are engaged with the two ends of the oil tank 12.

[0030] The bidirectional cylinder 21 is a pneumatic actuator capable of bidirectional extension and retraction. By controlling the extension and retraction of the cylinder, the oil tank 12 can be clamped and released. The bidirectional cylinder 21 provides precise force control, ensuring that the oil tank 12 is stably clamped during the inspection process. It also facilitates automated operation, improving inspection efficiency and safety. The design of the telescopic rod 22 allows the clamping pad 24 to flexibly move closer to or further away from the oil tank 12 to accommodate oil tanks of different sizes, improving the versatility and adaptability of the clamping and positioning assembly 2. The connecting rod 23 is used to connect the two telescopic rods 22 at their closest points to ensure that the two telescopic rods 22 move synchronously, ensuring the stability of the oil tank 12 during the clamping process. The clamping pad 24 is a component that directly contacts the oil tank 12 and is used to fix the oil tank 12 to prevent displacement of the oil tank 12 during the inspection process. The design of the clamping pad 24 can provide a stable clamping force to ensure the stability of the oil tank 12 during the inspection process. At the same time, the rubber pad on the clamping pad 24 can reduce damage to the oil tank 12 and form a fixation and positioning for the oil tank 12.

[0031] like Figure 1 - Figure 4 As shown, the detection component 3 includes a hollow support rod 31 slidably connected to the pad 24, a slider 32 slidably connected to the outside of the hollow support rod 31, an ultrasonic detector 33 installed on the outside of the slider 32, a stop block 34 provided on the outside of the oil tank 12, threaded grooves 35 are opened inside both the slider 32 and the stop block 34, and bolts 36 are threadedly connected inside the slider 32 and the stop block 34, and the threaded grooves 35 are engaged with the outside of the oil tank 12 by the bolts 36;

[0032] The hollow support rod 31 is used to support and fix the ultrasonic detector 33. It is slidably connected to a limiting rod extending from the outer side of the pad 24, allowing the ultrasonic detector 33 to move on the outside of the oil tank 12. The slider 32 connects the hollow support rod 31 and the ultrasonic detector 33, allowing the ultrasonic detector 33 to slide along the hollow support rod 31. The design of the slider 32 allows the ultrasonic detector 33 to be precisely adjusted along the outside of the oil tank 12 for detecting different areas of the oil tank 12. The ultrasonic detector 33 is used to emit and receive ultrasonic waves, and detects the sealing performance of the oil tank 12 by analyzing the reflected ultrasonic signals. The ultrasonic detector 33 can non-invasively detect the sealing performance of the oil tank 12. The oil tank 12 does not need to be opened, reducing the risks and costs during the detection process. The design of the abutment block 34 provides a stable support point to prevent the slider 32 from shifting during the detection process and to make tight contact with the surface of the oil tank 12, ensuring that the ultrasonic detector 33 can stably detect the oil tank 12. The threaded groove 35 is a groove opened inside the slider 32 and the abutment block 34, which is used to cooperate with the bolt 36 to achieve fixed contact between the slider 32 and the oil tank 12. The position of the slider 32 can be quickly adjusted by the bolt 36, which is convenient for installation and adjustment and improves the flexibility and ease of operation of the detection component 3. The bolt 36 passes through the threaded groove 35 and is used to fix the slider 32 to the outside of the oil tank 12, ensuring the stability and accuracy of the ultrasonic detector 33 during the detection process.

[0033] Working principle: such as Figure 1 - Figure 4 As shown: In use: First, place the oil-immersed transformer sealing performance testing device on a stable workbench to ensure the base 15 is stable. Then, start the bidirectional cylinder 21. Through the coordinated action of the telescopic rod 22 and the connecting rod 23, the clamping pad 24 is tightly attached to both ends of the oil tank 12 to achieve stable clamping of the oil tank 12. After confirming that the oil tank 12 is fixed, operate the slider 32 to make the ultrasonic detector 33 slide along the hollow support rod 31 to the predetermined testing position. Fix the slider 32 and the abutment 34 to the outside of the oil tank 12 with the bolts 36 to ensure that the ultrasonic detector 33 is in close contact with the surface of the oil tank 12. Start the ultrasonic detector 33 to emit ultrasonic signals and receive the signals reflected back from the inside of the oil tank 12. By analyzing the intensity and propagation time of the reflected signals, determine whether there is a leak in the sealing performance of the oil tank 12. During the test, monitor the reading of the ultrasonic detector 33 in real time, record the data and analyze it. If abnormal sealing performance is found, adjust the testing position in time and perform multiple tests to confirm the problem area. After the test is completed, release the bidirectional cylinder 21 to release the clamping pad 24 and complete the disassembly.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A device for testing the sealing performance of an oil-immersed transformer, characterized in that, include; Transformer assembly (1); the transformer assembly (1) includes a group (11), and an oil tank (12) is fixedly connected to one side of the top of the group (11); Clamping and positioning assembly (2); The clamping and positioning assembly (2) includes a bidirectional cylinder (21), and two bidirectional cylinders (21) are provided. The drive end of the bidirectional cylinder (21) is fixedly connected to a telescopic rod (22), and the two telescopic rods (22) are fixedly connected to a connecting rod (23) at their close ends. The end of the telescopic rod (22) away from the bidirectional cylinder (21) is fixedly connected to a pad (24). The detection component (3) includes a hollow support rod (31) slidably connected to a pad (24), a slider (32) slidably connected to the outside of the hollow support rod (31), and an ultrasonic detector (33) installed on the outside of the slider (32).

2. The oil-immersed transformer sealing performance testing device according to claim 1, characterized in that: The oil tank (12) is provided with a stop block (34) on the outside, and both the slider (32) and the stop block (34) are provided with threaded grooves (35).

3. The oil-immersed transformer sealing performance testing device according to claim 2, characterized in that: The slider (32) and the abutment (34) are internally threadedly connected by bolts (36), and the threaded groove (35) is engaged with the outside of the oil tank (12) by the bolts (36).

4. The oil-immersed transformer sealing performance testing device according to claim 1, characterized in that: The two adjacent ends of the two pads (24) engage with the two ends of the oil tank (12).

5. The oil-immersed transformer sealing performance testing device according to claim 1, characterized in that: The top of the assembly (11) is fixedly connected to a transformer body (13), and the outside of the assembly (11) is fixedly connected to a heat sink (14).

6. The oil-immersed transformer sealing performance testing device according to claim 1, characterized in that: The bottom end of the collective (11) is fixedly connected to a base (15).

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