A high-voltage lead fixing device for an oil-immersed power transformer

Abstract

This utility model discloses a high-voltage lead fixing device for an oil-immersed power transformer, belonging to the field of transformer lead fixing technology. It includes a transformer body, a tank cover and coils mounted on the transformer, a lifting iron mounted on the tank cover, and a high-voltage upper clamp mounted on the lower end of the lifting iron via bolts. A bent plate is welded onto the high-voltage upper clamp, and a fixing component for fixing the high-voltage lead is mounted on the bent plate. When fixing the insulating plate, the insert rod is simply engaged in the slot. To remove the insulating plate, the insert rod is pushed into the limiting slot, and then the insulating plate is lifted, which is convenient and quick. When fixing the high-voltage line, the fixing plate moves the insert plate outward along the wire groove. After the high-voltage line passes through the wire groove, the fixing plate is released. Under the action of a spring, the fixing plate moves the insert plate inward along the wire groove, thus fixing the high-voltage line.

Description

Technical Field

[0001] This utility model belongs to the field of transformer lead fixing technology, and in particular relates to a high-voltage lead fixing device for oil-immersed power transformers. Background Technology

[0002] Oil-immersed transformers use oil as insulation. Oil has good insulation properties and is inexpensive, making it the most common and conventional insulation structure in the transformer industry. It is mainly used in conventional outdoor, high-voltage, and ultra-high-voltage applications. During the connection between the oil-immersed transformer and the high-voltage lead, the high-voltage lead needs to be fixed. However, the existing high-voltage lead fixing devices for transformers have relatively simple fixing structures and poor fixing effects. This can easily lead to the high-voltage lead shaking and loosening during actual use, thus affecting efficiency and having certain defects. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a high-voltage lead fixing device for oil-immersed power transformers.

[0004] The technical solution adopted by this utility model is as follows: a high-voltage lead fixing device for an oil-immersed power transformer includes a transformer body, a tank cover and a coil installed on the transformer, a hanging iron installed on the tank cover, a high-voltage upper clamp installed at the lower end of the hanging iron by bolts, a bent plate welded on the high-voltage upper clamp, and a fixing component for fixing the high-voltage lead installed on the bent plate.

[0005] The fixing component includes an insulating plate with limiting grooves at both ends. A spring and a rod are installed in the limiting grooves. One end of the spring is connected to the inner wall of the limiting groove, and one end of the rod is connected to the other end of the spring. The other end of the rod is movably located on the outside of the insulating plate.

[0006] The insulating plate is provided with wire grooves and connecting grooves. The connecting grooves are located at both ends of the insulating plate, and the wire grooves facilitate the passage of high-voltage lines.

[0007] The insulating plate is movably installed inside the insulating plate. The two ends of the fixing plate are movably engaged in the connecting groove. A second spring is installed between the side wall of the fixing plate located on the outside of the insulating plate and the insulating plate. The wire groove is located between the two springs. An insert plate is also installed on the side wall of the fixing plate. The insert plates are movably engaged in the wire groove.

[0008] The bent plate is a hollow structure with openings at the top and sides. The side wall of the bent plate is provided with a slot, and the insertion rod is movably engaged in the slot.

[0009] Furthermore, the side wall of the insert plate located within the wire groove is provided with an elastic element, which facilitates the flexible fixing of the high-voltage line.

[0010] Preferably, both spring one and spring two are made of insulating material.

[0011] With the above structure, the beneficial effects of this utility model are as follows: When fixing the insulating plate, the insert rod can be movably engaged in the slot; when the insulating plate needs to be removed, the insert rod only needs to be pushed into the limiting slot and the insulating plate can be lifted, which is convenient and quick.

[0012] When it is necessary to fix the high-voltage line, the fixing plate moves the plug plate outward along the wire groove. After the high-voltage line is inserted through the wire groove, the fixing plate is released. Under the action of the second spring, the fixing plate moves the plug plate inward along the wire groove, thus fixing the high-voltage line with the plug plate. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] Figure 1 A schematic diagram of the existing high-voltage lead fixing device for oil-immersed power transformers;

[0015] Figure 2 This is a schematic diagram of the structure of an existing high-voltage lead clamp;

[0016] Figure 3 This is a schematic diagram of the structure of the high-voltage lead fixing device for an oil-immersed power transformer in use according to the present invention;

[0017] Figure 4 This is a top view of the fixing component proposed in this utility model;

[0018] Figure 5 This is a front view of the fixing component proposed in this utility model;

[0019] Figure 6 This is a schematic diagram of the curved plate proposed in this utility model.

[0020] In the attached diagram: 1. Box cover, 2. Coil, 3. Hanging iron, 4. High voltage upper clamp, 5. Bend plate, 6. Insulating plate, 7. Limiting groove, 8. Spring 1, 9. Insert rod, 10. Wire groove, 11. Connecting groove, 12. Fixing plate, 13. Spring 2, 14. Insert plate, 15. Slot hole, 16. Elastic element, 17. High voltage lead wire. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] like Figures 1-6 As shown, a high-voltage lead fixing device for an oil-immersed power transformer includes a transformer body, a tank cover 1 and a coil 2 installed on the transformer, a hanging iron 3 installed on the tank cover 1, a high-voltage upper clamp 4 installed at the lower end of the hanging iron 3 by bolts, a bent plate 5 welded on the high-voltage upper clamp 4, and a fixing component for fixing the high-voltage lead 17 installed on the bent plate 5.

[0024] The fixing assembly includes an insulating plate 6, with limiting grooves 7 at both ends of the insulating plate 6. A spring 8 and a rod 9 are installed in the limiting grooves 7. One end of the spring 8 is connected to the inner side wall of the limiting groove 7, and one end of the rod 9 is connected to the other end of the spring 8. The other end of the rod 9 is movably located on the outside of the insulating plate 6.

[0025] The insulating plate 6 is provided with a wire groove 10 and a connecting groove 11. The connecting groove 11 is located at both ends of the insulating plate 6, and the wire groove 10 facilitates the passage of high voltage lines.

[0026] A fixing plate 12 is movably installed inside the insulating plate 6. Both ends of the fixing plate 12 are movably engaged in the connecting groove 11. A second spring 13 is installed between the side wall of the fixing plate 12 located on the outside of the insulating plate 6 and the insulating plate 6. The wire groove 10 is located between the second spring 13. An insert plate 14 is also installed on the side wall of the fixing plate 12. The insert plates 14 are movably engaged in the wire groove 10. Both the first spring 8 and the second spring 13 are made of insulating material.

[0027] It should be noted that when fixing the high-voltage line, hold the fixing plate 12 and pull it outward. The second spring 13 is stretched, and both ends of the fixing plate 12 move outward from the connecting groove 11, but do not leave the connecting groove 11. The fixing plate 12 drives the insert plate 14 to move outward along the wire groove 10, and similarly does not leave the wire groove 10. After the high-voltage line is inserted through the wire groove 10, the fixing plate 12 is released. Under the action of the second spring 13, the fixing plate 12 drives the insert plate 14 to move inward along the wire groove 10, and the insert plate 14 clamps and fixes the high-voltage line.

[0028] The bent plate 5 is a hollow structure with openings at the top and sides. The side wall of the bent plate 5 is provided with a slot 15, and the insertion rod 9 is movably engaged in the slot 15.

[0029] The insert plate 14 is provided with an elastic element 16 on the side wall inside the wire groove 10, which facilitates the flexible fixing of the high voltage line.

[0030] In practical use, first fix the insulating plate 6, insert both ends of the insulating plate 6 into the bent plate 5, and the insert rod 9 is movably engaged in the slot 15. When the insulating plate 6 needs to be removed, simply push the insert rod 9 into the limiting slot 7 and then lift the insulating plate 6.

[0031] When it is necessary to fix the high-voltage line, hold the fixing plate 12 and pull it outward. The second spring 13 is stretched, and the two ends of the fixing plate 12 move outward from the connecting groove 11, but do not leave the connecting groove 11. The fixing plate 12 drives the insert plate 14 to move outward along the wire groove 10, and similarly does not leave the wire groove 10. Then, after the high-voltage line is inserted through the wire groove 10, the fixing plate 12 is released. Under the action of the second spring 13, the fixing plate 12 drives the insert plate 14 to move inward along the wire groove 10, and the insert plate 14 clamps and fixes the high-voltage line.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-voltage lead fixing device for an oil-immersed power transformer, characterized in that, The transformer includes a transformer body, on which a tank cover and coils are installed. A lifting iron is installed on the tank cover, and a high-voltage upper clamp is installed at the lower end of the lifting iron by bolts. A bent plate is welded on the high-voltage upper clamp, and a fixing component for fixing the high-voltage lead is installed on the bent plate.

2. The high-voltage lead fixing device for an oil-immersed power transformer according to claim 1, characterized in that, The fixing component includes an insulating plate, with limiting grooves at both ends of the insulating plate. A spring and a rod are installed in the limiting grooves. One end of the spring is connected to the inner sidewall of the limiting groove, and one end of the rod is connected to the other end of the spring. The other end of the rod is movably located on the outside of the insulating plate.

3. The high-voltage lead fixing device for an oil-immersed power transformer according to claim 2, characterized in that, The insulating board is provided with wire grooves and connecting grooves, and the connecting grooves are located at both ends of the insulating board.

4. The high-voltage lead fixing device for an oil-immersed power transformer according to claim 3, characterized in that, A fixing plate is movably installed inside the insulating plate. Both ends of the fixing plate are movably engaged in the connecting groove. A second spring is installed between the side wall of the fixing plate located on the outside of the insulating plate and the insulating plate. The wire groove is located between the two springs. An insert plate is also installed on the side wall of the fixing plate. The insert plates are movably engaged in the wire groove.

5. A high-voltage lead fixing device for an oil-immersed power transformer according to claim 2, characterized in that, The bent plate is a hollow structure with openings at the top and sides. The side wall of the bent plate is provided with slots, and the insertion rod is movably engaged in the slots.

6. The high-voltage lead fixing device for an oil-immersed power transformer according to claim 4, characterized in that, The insert plate is provided with an elastic element on the side wall inside the wire groove.

7. A high-voltage lead fixing device for an oil-immersed power transformer according to claim 4, characterized in that, Both spring one and spring two are made of insulating material.

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