Capacitor bushing convenient to install

Abstract

The utility model relates to the technical field of transformers, and particularly discloses a capacitor bushing convenient to install, which comprises a sealing cover plate sleeved on the capacitor bushing, the two ends of the sealing cover plate are symmetrically and fixedly connected with symmetrical pressing plates. Adaptive grooves are formed in the symmetrical pressing plates; a first fastener is inserted into the adaptive groove; symmetrical pressing plates are lifted by two persons to move to the position above a transformer, then a capacitor sleeve is inserted into a mounting hole in the transformer, then the position of a first fastener in an adaptive groove is changed, so that an L-shaped plate is attached to the edge position of the transformer, then the first fastener is rotated to pull a clamping pull plate to move upwards to clamp the edge of the transformer, and then the capacitor sleeve is inserted into the mounting hole position of the transformer. And then the limiting nuts are rotated to fix the first fasteners and the clamping pull plates at the two ends of the symmetrical pressing plates, so that the capacitor bushing is fixed on the transformer, and a worker does not need to climb to the upper surface of the transformer for installation, so that the capacitor bushing is safer, and the problem that an existing capacitor bushing needs to climb to be installed and overhauled is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a capacitor bushing which is convenient to install. Background Art

[0002] The main function of the capacitor bushing is to provide electrical insulation between the high voltage leads from the transformer coil to the outside of the tank. It ensures that the high voltage does not penetrate into other parts of the transformer or the ground, thereby ensuring the safe operation of the transformer.

[0003] The Chinese utility model patent with publication number CN216528247U disclosed a dry capacitor type bushing on 2022-05-13, including a bushing body, a mounting plate fixedly connected to the bushing body, a protective layer provided on the outer surface of the bushing body, and the protective layers are a first insulating layer, a second insulating layer and a wear-resistant layer from the inside to the outside, the outer surface of the bushing body is coated with a first insulating layer, the outer surface of the first insulating layer is coated with a second insulating layer, and the outer surface of the second insulating layer is coated with a wear-resistant layer, and both ends of the bushing body are fixedly connected with a connecting block, and the side walls of the connecting block are fixedly connected with a fixing column. The utility model can significantly improve the insulation performance and wear resistance of the bushing through the protective layer, the fixed column, the column sleeve, the limit block, the rotating shaft and the fixed disk, facilitate the flexible adjustment of the length of the bushing, and can rotate the busbar, reduce the difficulty of the work of the installer, and improve the work efficiency of the installer.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: the existing capacitor bushings are fixed by flanges and bolts. This method requires manual climbing above the transformer to use tools for installation, which requires high-altitude operations and is easily blocked by other cables and other electrical parts, making it inconvenient to use tools. Utility Model Content

[0005] The utility model aims to solve the technical problems that the existing capacitor bushings are all fixed by flanges and bolts, which requires manual climbing above the transformer to use tools for installation, requires high-altitude operation and is easily blocked by other cables and other electrical parts, resulting in inconvenience in using tools, and provides a capacitor bushing that is easy to install.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model describes a capacitor bushing that is easy to install, comprising a sealing cover plate sleeved on the capacitor bushing; symmetrical pressure plates are symmetrically fixedly connected at both ends of the sealing cover plate; an adapting groove is provided on the symmetrical pressure plate; a first fastener is inserted into the adapting groove; a second fastener is threadedly inserted into a hole at the lower end of the first fastener; a clamping pull plate is sleeved on the second fastener; an L-shaped plate and a plurality of limit nuts are threadedly sleeved on the first fastener.

[0008] Furthermore, a limit slot is provided on the clamping plate corresponding to the transformer.

[0009] Furthermore, a sealing ring is provided in a groove on the lower surface of the sealing cover plate.

[0010] Furthermore, the right-angled sides of the L-shaped plate are provided with rounded corners.

[0011] Furthermore, the surfaces of the sealing cover plate, the symmetrical pressure plate, the first fastener, the second fastener, the clamping pull plate, the L-shaped plate and the limiting nut are all sprayed with insulating paint.

[0012] The utility model provides a capacitor bushing that is easy to install and has the following beneficial effects:

[0013] 1. The utility model lifts the symmetrical pressing plate by two people and moves it to the top of the transformer, then inserts the capacitor bushing into the installation hole in the transformer, then changes the position of the first fastener in the adapter groove, so that the L-shaped plate fits the edge position of the transformer, then rotates the first fastener to pull the clamping plate upward to hold the edge of the transformer, and then rotates the limit nut to fix the first fastener and the clamping plate at both ends of the symmetrical pressing plate, thereby completing the fixing of the capacitor bushing on the transformer, and then because the symmetrical pressing plate and the L-shaped plate are rotatable, when installing a small transformer, the angle of the symmetrical pressing plate on the upper surface of the transformer is changed to be close to the diagonal position, thereby shortening the length of the symmetrical pressing plate extending out of the transformer, and the L-shaped plate can also fit the side of the transformer, thereby being safer and reducing the volume, and there is no need to manually climb to the upper surface of the transformer for installation, which makes it safer and solves the problem that the existing capacitor bushing needs to be installed and repaired at a high altitude;

[0014] 2. The utility model clamps the limiting card slot with the bent edge of the edge flange of the transformer, so that the clamping pull plate can be more stably fixed around the transformer, which is more secure and safer; the sealing ring blocks the contact surface between the sealing cover plate and the transformer, so that the capacitor bushing can be stably fixed on the upper surface of the transformer without fasteners, preventing moisture from entering and contaminating the transformer oil; and rounded corners are provided on the right-angled sides of the L-shaped plate, making it safer for personnel and the surface of the transformer, and not easy to cause scratches during installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings;

[0016] Figure 1 This is a first axonometric structural schematic diagram of the utility model;

[0017] Figure 2 It is a second axonometric structural schematic diagram of the utility model;

[0018] Figure 3 This is a third axonometric structural schematic diagram of the utility model.

[0019] Explanation of the numbers in the figure: 1. capacitor bushing; 2. sealing cover; 3. symmetrical pressure plate; 4. adapter groove; 5. first fastener; 6. second fastener; 7. clamping pull plate; 8. limiting slot; 9. L-shaped plate; 10. limiting nut; 11. sealing ring. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0023] See also Figure 1-3As shown, a capacitor bushing that is easy to install includes a sealing cover plate 2 sleeved on the capacitor bushing 1; symmetrical pressing plates 3 are symmetrically fixed at both ends of the sealing cover plate 2; an adapting groove 4 is opened on the symmetrical pressing plate 3; a first fastener 5 is inserted in the adapting groove 4; a second fastener 6 is threadedly inserted in the lower end opening of the first fastener 5; a clamping pull plate 7 is sleeved on the second fastener 6; an L-shaped plate 9 and a plurality of limit nuts 10 are threadedly sleeved on the first fastener 5; when working, two people lift the symmetrical pressing plate 3 to move it above the transformer, and then insert the capacitor bushing 1 into the installation hole in the transformer, and then change the position of the first fastener 5 in the adapting groove 4 so that the L-shaped plate 9 fits the edge position of the transformer. Then rotate the first fastener 5 to pull the clamping plate 7 to move upward to support the edge of the transformer, and then rotate the limit nut 10 to fix the first fastener 5 and the clamping plate 7 at both ends of the symmetrical pressure plate 3, thereby completing the fixation of the capacitor bushing 1 on the transformer. Then, since the symmetrical pressure plate 3 and the L-shaped plate 9 are rotatable, when installing a small transformer, the angle of the symmetrical pressure plate 3 on the upper surface of the transformer is changed to approach the diagonal position, thereby shortening the length of the symmetrical pressure plate 3 extending out of the transformer. The L-shaped plate 9 can also fit the side of the transformer, thereby being safer and reducing the size, and there is no need to manually climb to the upper surface of the transformer for installation, which makes it safer and solves the problem that the existing capacitor bushing 1 needs to be climbed for installation and maintenance.

[0024] The clamping plate 7 is provided with a limit slot 8 corresponding to the transformer; when working, the limit slot 8 is clamped with the edge flange bending edge of the transformer, so that the clamping plate 7 can be more stably fixed around the transformer, thereby being more tight and safe.

[0025] The lower surface of the sealing cover plate 2 is grooved with a sealing ring 11; when working, the sealing ring 11 blocks the contact surface between the sealing cover plate 2 and the transformer, so that the capacitor bushing 1 can be stably fixed on the upper surface of the transformer without fasteners, preventing moisture from entering and contaminating the transformer oil.

[0026] The right-angled sides of the L-shaped plate 9 are provided with rounded corners. During operation, the right-angled sides of the L-shaped plate 9 are provided with rounded corners, which makes the surface of the personnel and the transformer safer and is not easy to cause scratches during installation and use.

[0027] The surfaces of the sealing cover plate 2, the symmetrical pressure plate 3, the first fastener 5, the second fastener 6, the clamping plate 7, the L-shaped plate 9 and the limiting nut 10 are all sprayed with insulating paint; when working, the sealing cover plate 2, the symmetrical pressure plate 3, the first fastener 5, the second fastener 6, the clamping plate 7, the L-shaped plate 9 and the limiting nut 10 are all sprayed with insulating paint, which makes the safety higher.

[0028] By adopting the above scheme, when the utility model is in use, two people lift the symmetrical pressing plate 3 and move it above the transformer, then insert the capacitor bushing 1 into the installation hole in the transformer, and then change the position of the first fastener 5 in the adapter groove 4 so that the L-shaped plate 9 fits the edge position of the transformer, and then rotate the first fastener 5 to pull the clamping plate 7 to move upward to support the edge of the transformer, and then rotate the limit nut 10 to fix the first fastener 5 and the clamping plate 7 at both ends of the symmetrical pressing plate 3, thereby completing the fixing of the capacitor bushing 1 on the transformer, and then because the symmetrical pressing plate 3 and the L-shaped plate 9 are rotatable, when installing a small transformer, the angle of the symmetrical pressing plate 3 on the upper surface of the transformer is changed to make it close to the diagonal position, thereby shortening the length of the symmetrical pressing plate 3 extending out of the transformer, and the L-shaped plate 9 can also fit the side of the transformer, thereby being safer and reducing the volume, and There is no need to manually climb up to the upper surface of the transformer for installation, which makes it safer and solves the problem that the existing capacitor bushing 1 needs to be climbed for installation and maintenance; the limiting card slot 8 is clamped with the edge flange bending edge of the transformer, so that the clamping plate 7 can be more stably fixed around the transformer, making it more tight and safe; the contact surface between the sealing cover plate 2 and the transformer is blocked by the sealing ring 11, so that the capacitor bushing 1 can be stably fixed on the upper surface of the transformer without fasteners, preventing moisture from entering and contaminating the transformer oil; by providing rounded corners on the right-angled side of the L-shaped plate 9, it is safer for personnel and the surface of the transformer, and it is not easy to cause scratches during installation and use; by spraying insulating paint on the surfaces of the sealing cover plate 2, the symmetrical pressure plate 3, the first fastener 5, the second fastener 6, the clamping plate 7, the L-shaped plate 9 and the limiting nut 10, it is safer.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A capacitor bushing that is easy to install, characterized in that; The invention comprises a sealing cover plate (2) sleeved on a capacitor sleeve (1); symmetrical pressure plates (3) are symmetrically fixedly connected to both ends of the sealing cover plate (2); an adapting groove (4) is provided on the symmetrical pressure plate (3); a first fastener (5) is inserted into the adapting groove (4); a second fastener (6) is threadedly inserted into a hole at the lower end of the first fastener (5); a clamping pull plate (7) is sleeved on the second fastener (6); an L-shaped plate (9) and a plurality of limit nuts (10) are threadedly sleeved on the first fastener (5).

2. The capacitor bushing that is easy to install according to claim 1 is characterized in that: The clamping pull plate (7) is provided with a limit slot (8) corresponding to the transformer.

3. The capacitor bushing that is easy to install according to claim 2 is characterized in that: The lower surface of the sealing cover plate (2) is grooved and provided with a sealing ring (11).

4. The capacitor bushing that is easy to install according to claim 3 is characterized in that: The right-angled sides of the L-shaped plate (9) are provided with rounded corners.

5. The capacitor bushing that is easy to install according to claim 4 is characterized in that: The surfaces of the sealing cover plate (2), the symmetrical pressing plate (3), the first fastener (5), the second fastener (6), the clamping pull plate (7), the L-shaped plate (9) and the limiting nut (10) are all sprayed with insulating paint.

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