Capacitor bushing with auxiliary installation structure

Abstract

The utility model relates to the technical field of transformers, and particularly discloses a capacitor bushing with an auxiliary mounting structure, which comprises a capacitor bushing sleeve. A first flange plate and a second flange plate are fixedly connected to the capacitor sleeve; second fasteners are inserted into the kidney-shaped holes and are in threaded connection with the sliding insertion plate, so that the front-back displacement distance of the sliding insertion plate inserted into the fixed bottom plate in a sliding mode is limited, and the position between the sliding insertion plate and the fixed bottom plate can be locked through the second fasteners. The first flange plate and the second flange plate can be clamped in a rolling connection mode on the two symmetrical fixing and supporting units, so that the capacitor sleeve can be fixed in a suspended mode and conduct circular motion in any direction, and the capacitor sleeve can rotate at any angle; therefore, the residual structure can be conveniently installed on the capacitor bushing which is completely assembled, and the problem that an existing capacitor bushing auxiliary installation frame cannot be matched with capacitor bushings of different lengths and specifications for convenient installation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly to a capacitive bushing with an auxiliary installation structure. Background Art

[0002] The main function of the capacitive bushing is to provide electrical insulation between the high-voltage lead from the transformer coil to the outside of the oil tank. It ensures that high voltage does not penetrate into other parts of the transformer or the ground, thus guaranteeing the safe operation of the transformer.

[0003] The Chinese invention patent with the publication number of CN110752071A discloses a capacitive bushing on February 4, 2020, which includes a conductive rod, silicone rubber umbrella skirts, an installation flange, and a wiring terminal. There are two silicone rubber umbrella skirts, which are respectively connected to both ends of the installation flange. The silicone rubber umbrella skirts and the installation flange are hollow to form an installation cavity. The conductive rod is arranged in the installation cavity. In the installation cavity, several insulation layers are arranged in levels according to the transmitted voltage. The first-level insulation layer is sleeved on the conductive rod, and the subsequent insulation layers are sleeved on the previous insulation layer. Capacitance screens are arranged between adjacent two insulation layers. The installation flange is fixedly connected to the outermost insulation layer. A grounding wire is also arranged in the installation cavity. One end of the grounding wire is arranged in the silicone rubber umbrella skirt and connected to the capacitance screen of the last level, and the other end passes through the last-level insulation layer and extends outside the silicone rubber umbrella skirt to be electrically connected to the installation flange, making the radial and axial electric field distributions of the conductive tube more uniform, ensuring a low partial discharge amount of the equipment, and thus enabling the bushing to have high withstand voltage and small volume.

[0004] However, the above-mentioned disclosed solution has the following deficiencies: During the combined installation of the existing capacitive bushing, a large number of auxiliary devices are required for auxiliary installation to combine multiple structures of the capacitive bushing. During this process, it is necessary to rotate the capacitive bushing, rotate the capacitive bushing at multiple angles and check the installation accuracy. The existing installation structure is complex and cannot adapt to capacitive bushings of different size specifications. Content of the Utility Model

[0005] The purpose of the utility model is to solve the technical problem that during the combined installation of the existing capacitive bushing, a large number of auxiliary devices are required for auxiliary installation to combine multiple structures of the capacitive bushing. During this process, it is necessary to rotate the capacitive bushing, rotate the capacitive bushing at multiple angles and check the installation accuracy. The existing installation structure is complex and cannot adapt to capacitive bushings of different size specifications, and to provide a capacitive bushing with an auxiliary installation structure.

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

[0007] A capacitive bushing with an auxiliary installation structure according to the present utility model includes a capacitive bushing sleeve; a first flange and a second flange are fixedly connected to the capacitive bushing sleeve; a fixed support unit is rotatably sleeved on the first flange and the second flange; the fixed support unit is symmetrically fixedly connected to both ends of a fixed bottom plate and a sliding plug board that are slidably inserted into each other; a waist-shaped hole is formed in the fixed bottom plate; a second fastener is threadedly inserted into a hole on the upper surface of the sliding plug board in the waist-shaped hole; an elastic member is inserted into the fixed bottom plate corresponding to the sliding plug board.

[0008] Further, the fixed support unit includes an arc-shaped cover; clamping grooves are formed in the arc-shaped cover corresponding to the first flange and the second flange; a plurality of positioning shafts are inserted into the clamping grooves; bearings are sleeved on the positioning shafts.

[0009] Further, a positioning sleeve plate is fixedly connected to the arc-shaped cover; a first fastener is threadedly connected to a hole in the positioning sleeve plate corresponding to the first flange and the second flange.

[0010] Further, third fasteners are symmetrically inserted into holes in the fixed bottom plate.

[0011] Further, a support plate is threadedly sleeved on the third fastener; a through hole is formed at the end of the support plate.

[0012] The capacitive bushing with an auxiliary installation structure provided by the present utility model has the following beneficial effects:

[0013] 1. In the present utility model, by inserting the second fastener into the waist-shaped hole and threadedly connecting it to the sliding plug board, the forward and backward displacement distance of the sliding plug board slidably inserted into the fixed bottom plate is restricted, and the position between the sliding plug board and the fixed bottom plate can be locked by the second fastener. Thus, the first flange and the second flange can be clamped by rolling connection through two symmetric fixed support units, so that the capacitive bushing can be fixed in suspension and perform circumferential movement in any direction, and thus the capacitive bushing can be rotated at any angle, which is convenient for installing the remaining structures of the fully assembled capacitive bushing, such as grading rings, measuring terminals, wiring terminals, rubber sealing rings, end shields, and sampling valves. Therefore, the installation angle and operation can be adjusted to a comfortable angle for installation by personnel. At the same time, changing the angle between the two fixed bottom plates can adapt to capacitive bushings of different lengths, and then the fixed support unit can also adapt to first flanges and second flanges of different diameters, solving the problem that the existing capacitive bushing auxiliary installation frame cannot adapt to capacitive bushings of different lengths and specifications for convenient installation.

[0014] 2. The utility model is in rolling friction contact with the edges of the first flange and the second flange through bearings, and then symmetrically wrapped on both sides of the arc-shaped cover and the clamping groove, so that the first flange and the second flange can rotate in a suspended state, thereby enabling the capacitive bushing to rotate in a suspended state, which facilitates the rotational inspection of various parts of the capacitive bushing and also facilitates the multi-angle assembly of other components to the capacitive bushing, solving the problem that the existing auxiliary installation bracket can only support the capacitive bushing and cannot enable the capacitive bushing to rotate with low resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes in detail the specific embodiments of the present utility model with reference to the accompanying drawings;

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

[0017] Figure 2 is the partial sectional axonometric structural schematic diagram of the present utility model;

[0018] Figure 3 is the top view structural schematic diagram of the present utility model.

[0019] Explanation of the reference numerals in the drawings: 1, capacitive bushing sleeve; 2, first flange; 3, second flange; 4, arc-shaped cover; 5, clamping groove; 6, positioning shaft; 7, bearing; 8, positioning sleeve plate; 9, first fastener; 10, sliding plug board; 11, elastic member; 12, waist-shaped hole; 13, second fastener; 14, fixed bottom plate; 15, third fastener; 16, support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

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

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

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

[0023] Please refer to Figures 1-3 As shown, a capacitive bushing with an auxiliary installation structure includes a capacitive bushing sleeve 1; a first flange 2 and a second flange 3 are fixedly connected to the capacitive bushing sleeve 1; a fixed support unit is rotatably sleeved on the first flange 2 and the second flange 3; the fixed support unit is symmetrically fixedly connected to both ends of a fixedly connected bottom plate 14 and a sliding plug plate 10 that are slidably inserted into each other; a waist-shaped hole 12 is opened on the fixedly connected bottom plate 14; a second fastener 13 is threadedly inserted into a hole opened on the upper surface of the sliding plug plate 10 in the waist-shaped hole 12; an elastic member 11 is inserted into the fixedly connected bottom plate 14 corresponding to the sliding plug plate 10; during operation, by inserting the second fastener 13 into the waist-shaped hole 12 and threadedly connecting it to the sliding plug plate 10, the front-back displacement distance of the sliding plug plate 10 slidably inserted into the fixedly connected bottom plate 14 is restricted, and the position between the sliding plug plate 10 and the fixedly connected bottom plate 14 can be locked by the second fastener 13, so that the capacitive bushing can be fixedly suspended and perform circumferential movement in any direction through the clamping of the two symmetric fixed support units on the first flange 2 and the second flange 3, so that the capacitive bushing can be rotated at any angle, which is convenient for installing the remaining structures of the fully assembled capacitive bushing, such as grading rings, measuring terminals, wiring terminals, rubber sealing rings, end shields, and sampling valves, so that the installation angle and operation can be adjusted to a comfortable angle for the personnel to install. At the same time, changing the angle between the two fixedly connected bottom plates 14 can adapt to capacitive bushings of different lengths, and then the fixed support unit can also adapt to the first flange 2 and the second flange 3 of different diameters, solving the problem that the existing capacitive bushing auxiliary installation frame cannot adapt to capacitive bushings of different lengths and specifications for convenient installation.

[0024] The fixed support unit includes an arc-shaped cover 4; a clamping groove 5 is opened on the arc-shaped cover 4 corresponding to the first flange 2 and the second flange 3; a plurality of positioning shafts 6 are inserted into the clamping groove 5; a bearing 7 is sleeved on the positioning shaft 6; during operation, through the rolling friction contact of the bearing 7 with the edges of the first flange 2 and the second flange 3, and then symmetrically wrapped on both sides of the arc-shaped cover 4 and the clamping groove 5, the first flange 2 and the second flange 3 can be rotated in a suspended state, so that the capacitive bushing can perform a suspended rotational movement, which is convenient for rotating and detecting each part of the capacitive bushing, and is also convenient for multi-angle assembly of other components of the capacitive bushing, solving the problem that the existing auxiliary installation bracket can only support the capacitive bushing and cannot enable the capacitive bushing to perform low-resistance rotational movement.

[0025] A positioning sleeve plate 8 is fixedly connected to the arc-shaped cover 4; corresponding to the first flange 2 and the second flange 3, the positioning sleeve plate 8 is provided with openings and internally threaded with a first fastener 9; during operation, by rotating the first fastener 9 to make it contact with the first flange 2 and the second flange 3, the rotation of the first flange 2 and the second flange 3 can be restricted, so that when it is necessary to install a capacitor bushing at a fixed angle, it can be stably installed at a fixed angle; then when it is necessary to rotate the capacitor bushing for detection, the first fastener 9 can be rotated in the reverse direction, so that the first flange 2 and the second flange 3 can freely rotate within the arc-shaped cover 4, so that the capacitor bushing can be quickly rotated, solving the problem that the existing capacitor bushing placement rack cannot rotate quickly with low resistance for convenient inspection.

[0026] Symmetric openings are provided on the fixed bottom plate 14 and inserted with a third fastener 15; during operation, the fixed bottom plate 14 can be stably fixed to the installation platform through the third fastener 15 to support the rotational installation of the capacitor bushing, making the rotation more stable.

[0027] A support plate 16 is threadedly sleeved on the third fastener 15; a through hole is provided at the end of the support plate 16; during operation, by rotating the third fastener 15, the friction force between the support plate 16 and the fixed bottom plate 14 can be changed, so that the support plate 16 can rotate and be fixed at an angle. With the cooperation of the through hole and the bolt, it can be stably fixed, so that the angle can be expanded and fixed according to the needs of the on-site platform, so as to maximize the stable support of the capacitor bushing.

[0028] With the above solution, when the utility model is in use, the second fastener 13 is inserted into the waist-shaped hole 12 and threadedly connected to the sliding plug board 10, realizing the limitation of the front-back displacement distance of the sliding plug board 10 slidingly inserted into the fixed bottom board 14, and the position between the sliding plug board 10 and the fixed bottom board 14 can be locked by the second fastener 13. Thus, the two symmetrical fixed support units can clamp the first flange 2 and the second flange 3 for rolling connection, so that the capacitor bushing can be fixed in suspension and perform circumferential movement in any direction, and thus the capacitor bushing can be rotated at any angle, which facilitates the installation of the remaining structures of the fully assembled capacitor bushing, such as grading rings, measuring terminals, wiring terminals, rubber sealing rings, grading screens and sampling valves. Therefore, the installation angle and operation can be adjusted to a comfortable angle for the personnel to install. At the same time, changing the angle between the two fixed bottom boards 14 can adapt to capacitor bushings of different lengths, and then the fixed support units can also adapt to the first flange 2 and the second flange 3 of different diameters, solving the problem that the existing auxiliary installation frames for capacitor bushings cannot be conveniently installed to adapt to capacitor bushings of different lengths and specifications; through the rolling friction contact between the bearing 7 and the edges of the first flange 2 and the second flange 3, and then symmetrically wrapped on both sides of the arc-shaped cover 4 and the clamping groove 5, the first flange 2 and the second flange 3 can rotate in suspension, so that the capacitor bushing can perform rotational movement in suspension, which facilitates the rotational inspection of each part of the capacitor bushing and also facilitates the multi-angle assembly of other components of the capacitor bushing, solving the problem that the existing auxiliary installation brackets can only support the capacitor bushing and cannot enable the capacitor bushing to perform low-resistance rotational movement; by rotating the first fastener 9 to make it contact with the first flange 2 and the second flange 3, the rotation of the first flange 2 and the second flange 3 can be restricted, so that when it is necessary to install the capacitor bushing at a fixed angle, it can be stably installed at a fixed angle; then when it is necessary to rotate the capacitor bushing for inspection, the first fastener 9 can be rotated in the reverse direction, so that the first flange 2 and the second flange 3 can freely rotate in the arc-shaped cover 4, so that the capacitor bushing can be quickly rotated, solving the problem that the existing capacitor bushing placement racks cannot rotate quickly with low resistance for convenient inspection.

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

[0030] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A capacitive bushing with an auxiliary installation structure, characterized in that; It includes a capacitor bushing sleeve (1); a first flange (2) and a second flange (3) are fixedly connected to the capacitor bushing sleeve (1); a fixed support unit is rotatably sleeved on the first flange (2) and the second flange (3); the fixed support unit is symmetrically fixedly connected to both ends of a fixed bottom plate (14) and a sliding plug plate (10) that are slidably inserted into each other; a waist-shaped hole (12) is formed in the fixed bottom plate (14); a second fastener (13) is threadedly inserted into a hole on the upper surface of the sliding plug plate (10) that is slidably inserted into the waist-shaped hole (12); an elastic member (11) is inserted into the fixed bottom plate (14) corresponding to the sliding plug plate (10).

2. The capacitive bushing with an auxiliary installation structure according to claim 1, characterized in that: The fixed support unit includes an arc-shaped cover (4); a clamping groove (5) is formed in the arc-shaped cover (4) corresponding to the first flange (2) and the second flange (3); a plurality of positioning shafts (6) are inserted into the clamping groove (5); a bearing (7) is sleeved on the positioning shaft (6).

3. The capacitor bushing with an auxiliary installation structure according to claim 2, characterized in that: A positioning sleeve plate (8) is fixedly connected to the arc-shaped cover (4); a first fastener (9) is threadedly connected to a hole in the positioning sleeve plate (8) corresponding to the first flange (2) and the second flange (3).

4. The capacitive bushing with an auxiliary installation structure according to claim 3, characterized in that: Third fasteners (15) are symmetrically inserted into holes on the fixed bottom plate (14).

5. The capacitor bushing with an auxiliary installation structure according to claim 4, wherein: A support plate (16) is threadedly sleeved on the third fastener (15); a through hole is formed at the end of the support plate (16).

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