Transformer bushing tap grounding structure

Abstract

The utility model relates to the field of electric power grounding, and discloses a transformer bushing end screen grounding structure, which comprises a grounding seat, the top of the grounding seat is in threaded connection with a grounding cover, an end screen grounding lead-out wire is arranged in the grounding cover, one end of the end screen grounding lead-out wire is connected with a grounding pole, and the other end of the end screen grounding lead-out wire is connected with the grounding pole. The other end of the end screen grounding outgoing line is connected with a high-voltage sleeve, a control mechanism is arranged in the grounding seat and comprises a circular plate and a vertical rod, the circular plate is rotatably mounted on the inner wall of the grounding seat, a shifting piece is fixedly connected to the outer wall of the circular plate, a through groove is formed in the circular plate, and the vertical rod is fixedly connected with the shifting piece. The vertical rods slide on the inner walls of the through grooves, and the tops of the vertical rods are fixedly connected with limiting rods. According to the utility model, the limiting rod is inserted into the limiting groove, so that the connection stability and the installation accuracy of the grounding seat and the grounding cover are improved, and the possibility that the installation of the end screen grounding device can approach and descend due to infirm installation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric power grounding, especially a transformer bushing end screen grounding structure. BACKGROUND

[0002] The bushing is mainly composed of a capacitor core, a porcelain sleeve, a wiring terminal and an end screen, the bushing leads out grounding through the end screen, the capacitance value and the dielectric loss factor of the bushing can be measured through the end screen, so that the insulation condition of the bushing is judged and the insulation performance is mastered, the outermost aluminum foil, i.e. the end screen, leads out grounding through the small bushing, which facilitates dielectric loss and insulation test of the bushing.

[0003] Through retrieval, the patent announcement number CN215988380U discloses a transformer high-voltage side bushing end screen grounding structure, which is provided with a high-voltage bushing, an end screen small bushing is arranged on the outer side of the high-voltage bushing, a high-voltage wiring column is arranged in the end screen small bushing, one end of the high-voltage wiring column is connected with the end screen in the high-voltage bushing, the other end of the high-voltage wiring column extends out of the end screen small bushing, characterized in that a connecting base is arranged on the high-voltage bushing outside the end screen small bushing, the connecting base is fixedly connected with the high-voltage bushing, an outer thread is arranged on the outer side of the connecting base, and an outer sheath is arranged on the connecting base.

[0004] The above-mentioned patent has the advantages of simple structure, high grounding reliability, good sealing performance, good grounding effect, and remarkable safety effect, but the transformer bushing end screen grounding structure needs to be regularly checked by using a multimeter and other tools to check whether the end screen grounding is good, and the problem of poor grounding is found and handled in time, and the connecting base and the outer sheath need to be disassembled and assembled every time, and the installation position may be changed due to repeated disassembly and assembly, which causes the installation precision to decrease, and further causes the installation reliability of the end screen grounding to decrease, therefore, a transformer bushing end screen grounding structure is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above-mentioned defects, the utility model provides a transformer bushing end screen grounding structure, which aims at improving the problem of "repeated disassembly and assembly may cause the installation position to change, the installation precision to decrease, and the installation reliability of the end screen grounding to decrease" in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a transformer bushing end screen grounding structure, including the ground seat, the top of ground seat is connected with the ground cover, the inside of ground cover is provided with end screen grounding lead-out wire, one end of end screen grounding lead-out wire is connected with the ground column, the other end of end screen grounding lead-out wire is connected with high pressure sleeve, the inside of ground seat is provided with control mechanism, control mechanism includes round plate and vertical rod, the inner wall of ground seat is rotatably installed with round plate, the outer wall of round plate is fixedly connected with the tab, the inside of round plate is provided with through slot, the inner wall of through slot is slidably installed with vertical rod, the top of vertical rod is fixedly connected with the limit rod, the inner wall of ground cover is provided with the limit slot.

[0007] As further description of the above technical scheme:

[0008] The inner wall of the ground cover is fixedly connected with the sleeve, and the end screen grounding lead-out wire passes through the inside of the sleeve.

[0009] As further description of the above technical scheme:

[0010] The top of the sealing ring is fixedly connected with the ground cover.

[0011] As further description of the above technical scheme:

[0012] The bottom of the ground cover is fixedly connected with the inclined plate, and the inclined plate is inclined to the side away from the center of the ground cover.

[0013] As further description of the above technical scheme:

[0014] The bottom of the ground seat is fixedly connected with the mounting seat, the surface of the mounting seat is penetrated with the ground nail, and the number of the ground nail is multiple.

[0015] As further description of the above technical scheme:

[0016] The through slot is arc-shaped, the number of the through slot is multiple, and multiple through slots are annularly and equally spaced on the surface of the round plate.

[0017] As further description of the above technical scheme:

[0018] The control mechanism further includes a sliding rod, and the sliding rod is fixedly installed at the bottom of the vertical rod.

[0019] As further description of the above technical scheme:

[0020] The control mechanism further includes a fixing ring, and the fixing ring is fixedly installed in the ground seat, and the sliding rod is slidably installed on the inner wall of the fixing ring.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the cooperation of the push piece, the round plate, the through slot, the vertical rod and the limiting rod, after the grounding seat and the grounding cover are connected, the limiting rod is inserted into the limiting slot, the connection stability and the installation accuracy of the grounding seat and the grounding cover are improved, and the possibility of the installation reliability of the grounding of the tail screen is reduced.

[0023] 2. In the utility model, through the cooperation of the vertical rod, the limiting rod, the limiting slot, the sliding rod and the fixing ring, the fixing ring can guide the displacement direction of the sliding rod, the sliding rod can make more accurate linear motion, the motion stability of the sliding rod is improved, the limiting rod can more easily enter the inside of the limiting slot, and the installation accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole three-dimensional structure schematic view in the utility model;

[0025] Figure 2 It is a three-dimensional explosion structure schematic view of the grounding seat and the grounding cover in the utility model;

[0026] Figure 3 It is a three-dimensional structure section view of the grounding seat, the grounding cover and the control mechanism in the utility model;

[0027] Figure 4 It is a three-dimensional explosion structure schematic view of the control mechanism in the utility model.

[0028] Legend:

[0029] 1, grounding seat;2, grounding cover;3, tail screen grounding lead-out wire;4, grounding column;5, high-pressure sleeve;6, sleeve;7, sealing ring;8, inclined plate;9, mounting seat;10, ground nail;11, push piece;12, round plate;13, through slot;14, vertical rod;15, limiting rod;16, limiting slot;17, sliding rod;18, fixing ring. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0031] Reference Figure 1 , Figure 2The utility model provides a kind of transformer bushing end screen grounding structure, including ground seat 1, the top of ground seat 1 is threadedly connected with ground cover 2, the reliability of end screen grounding is detected after being conveniently disassembled to ground cover 2, the inside of ground cover 2 is provided with end screen grounding lead-out wire 3, for the grounding of transformer, one end of end screen grounding lead-out wire 3 is connected with ground column 4, the inside of ground column 4 is provided with spring, adopts spring compression tight push pull type grounding mode, ground column 4 is fixedly installed in the inner wall bottom of ground seat 1, the other end of end screen grounding lead-out wire 3 is connected with high pressure sleeve 5, high pressure sleeve 5 is provided with binding post inside, is grounded by binding post and transformer, the inside of ground seat 1 is provided with control mechanism.

[0032] Referring to Figure 3 、 Figure 4 , control mechanism includes round plate 12 and vertical rod 14, round plate 12 is rotatably installed on the inner wall of ground seat 1, the center of round plate 12 is provided with round hole, round plate 12 is fixedly connected with the outer wall of tab 11, it is convenient for staff to move round plate 12, it is convenient and labor-saving, the inside of round plate 12 is provided with the through slot 13 of control effect, the through slot 13 is arranged as arc, the number of through slot 13 is set to multiple, multiple through slot 13 is annularly and equally spaced on the surface of round plate 12, when round plate 12 movement drives the displacement of through slot 13, make vertical rod 14 displace in the radial direction of round plate 12, vertical rod 14 slides on the inner wall of through slot 13, the top of vertical rod 14 is fixedly connected with limit rod 15, the inner wall of ground cover 2 is provided with limit slot 16 matched with limit rod 15.

[0033] Referring to Figure 3 、 Figure 4 , control mechanism further includes slide rod 17, the number of vertical rod 14, slide rod 17 and limit rod 15 is equal, and the position of slide rod 17 and limit rod 15 corresponds, slide rod 17 is fixedly installed at the bottom of vertical rod 14, control mechanism further includes fixed ring 18, fixed ring 18 is fixedly installed in the inside of ground seat 1, slide rod 17 is slidably installed on the inner wall of fixed ring 18, fixed ring 18 is used to guide the displacement direction of slide rod 17, so that slide rod 17 does more accurate linear motion.

[0034] Referring to Figure 1 - Figure 3 , the inner wall of ground cover 2 is fixedly connected with sleeve 6, sleeve 6 can select porcelain sleeve, improve the effect of insulation, end screen grounding lead-out wire 3 passes through the inside of sleeve 6, the top of ground seat 1 is fixedly connected with the sealing ring 7 set as annular, the top of sealing ring 7 and the bottom of ground cover 2 contact, for improving the effect of sealing.

[0035] Referring to Figure 1 - Figure 3The bottom of the grounding cover 2 is fixedly connected with an inclined plate 8 for guiding the displacement direction of foreign matters from outside, the inclined plate 8 is inclined to the side far away from the center of the grounding cover 2, the possibility of foreign matters from outside entering the inside of the grounding base 1 is reduced, a certain protection effect can be achieved, the bottom of the grounding base 1 is fixedly connected with a mounting seat 9, the surface of the mounting seat 9 is penetrated by ground nails 10, the number of the ground nails 10 is set to be multiple, the grounding base 1 is conveniently fixed on the ground, and the mounting stability of the grounding base 1 is improved.

[0036] Working principle: in use, after the reliability of the screen grounding is detected by the multimeter, the grounding cover 2 is re-rotated and installed on the top of the grounding base 1, then the dial piece 11 is rotated, the dial piece 11 is displaced to drive the circular plate 12 to rotate in the inside of the grounding base 1, the circular plate 12 drives the through slot 13 to rotate when rotating, through the cooperation of the through slot 13 and the vertical rod 14 which are set to be arc-shaped, the limiting rod 15 is displaced in the radial direction of the circular plate 12, then the limiting rod 15 is inserted into the inside of the limiting slot 16, so that the grounding base 1 and the grounding cover 2 are limited, the connection stability and the installation precision of the grounding base 1 and the grounding cover 2 are improved, and the reliability of the screen grounding is improved.

[0037] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A transformer bushing end-screen grounding structure, comprising a grounding base (1), characterized in that: The grounding base (1) is threadedly connected to a grounding cover (2). The grounding cover (2) is provided with a final screen grounding lead-out wire (3). One end of the final screen grounding lead-out wire (3) is connected to a grounding post (4). The other end of the final screen grounding lead-out wire (3) is connected to a high-voltage sleeve (5). The grounding base (1) is provided with a control mechanism. The control mechanism includes a circular plate (12) and a vertical rod (14). The circular plate (12) is rotatably installed on the inner wall of the grounding base (1). A lever (11) is fixedly connected to the outer wall of the circular plate (12). A through groove (13) is opened inside the circular plate (12). The vertical rod (14) slides on the inner wall of the through groove (13). A limit rod (15) is fixedly connected to the top of the vertical rod (14). A limit groove (16) is provided on the inner wall of the grounding cover (2).

2. The transformer bushing end-screen grounding structure according to claim 1, characterized in that: A sleeve (6) is fixedly connected to the inner wall of the grounding cover (2), and the end screen grounding lead (3) passes through the inside of the sleeve (6).

3. The transformer bushing end-screen grounding structure according to claim 1, characterized in that: A sealing ring (7) is fixedly connected to the top of the grounding base (1), and the top of the sealing ring (7) is in contact with the bottom of the grounding cover (2).

4. The transformer bushing end-screen grounding structure according to claim 1, characterized in that: The bottom of the grounding cover (2) is fixedly connected to an inclined plate (8), which is inclined to the side away from the center of the grounding cover (2).

5. The transformer bushing end-screen grounding structure according to claim 1, characterized in that: The bottom of the grounding base (1) is fixedly connected to the mounting base (9), and the surface of the mounting base (9) is penetrated by ground nails (10), and the number of ground nails (10) is set to multiple.

6. The transformer bushing end-screen grounding structure according to claim 1, characterized in that: The through groove (13) is set to be arc-shaped, and the number of through grooves (13) is set to be multiple. The multiple through grooves (13) are arranged in a ring at equal intervals on the surface of the circular plate (12).

7. The transformer bushing end-screen grounding structure according to claim 1, characterized in that: The control mechanism also includes a slide bar (17), which is fixedly installed at the bottom of the vertical bar (14).

8. The transformer bushing end-screen grounding structure according to claim 7, characterized in that: The control mechanism also includes a fixing ring (18), which is fixedly installed inside the grounding seat (1), and the slide rod (17) is slidably installed on the inner wall of the fixing ring (18).

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