Ultrahigh-voltage security induced current prevention drainage grounding device

Abstract

The utility model discloses an ultrahigh-voltage security anti-induced current drainage grounding device. The grounding clamp is provided with a connecting part and a hook part, the pressing block is arranged in the grounding clamp, the adjusting pressing screw rod is connected to the bottom end of the pressing block and connected with the grounding clamp in a screwed mode, a locking component is arranged on the side face of the connecting part, and soft contact surfaces are arranged on the inner surface of the hook part and the upper surface of the pressing block. A foldable stress application rod is hinged to the bottom of the adjusting pressing screw rod, and the side portion of the connecting portion is connected with a grounding lead. The grounding clamp has the advantages that after the grounding clamp compresses the conductor, the adjusting compression screw rod is locked through the locking part, so that pressure between the grounding clamp and the conductor is prevented from being released by natural shaking and external force, and the problem of looseness between the grounding clamp and the conductor is solved. Soft contact and surface contact are adopted, the gap between the movable pressing block and the sliding groove is small, and the grounding clamp can move up and down freely, thereby reducing the internal resistance of the grounding clamp. And the stress application rod made of epoxy materials is additionally arranged, so that stress application operation can be performed.

Description

Technical Field

[0001] The utility model discloses a grounding device, in particular to an ultra-high voltage security and anti-inductive electric current drainage grounding device, belonging to the technical field of power system accessories. Background Art

[0002] When inspecting and repairing power equipment and lines, in order to prevent operators from getting electric shock, it is usually necessary to ground the inspection and repair equipment. Therefore, the grounding wire is indispensable during the inspection and repair of power equipment and lines. It can effectively prevent static induction electric shock from nearby charged bodies. In order to meet the actual needs of different occasions, the existing high-voltage grounding wire generally adopts a structure in which an insulating tube directly fixes the screw, and the screw is driven to advance or retreat by screwing the insulating rod. The defect of the existing structure is that the shaking will increase when the busbar is hooked and screwed, and the high-voltage grounding wire is easy to fall off the busbar when it is not tightened. Furthermore, the contact area between the wire clamp of the existing high-voltage grounding wire and the line is uneven, which will lead to excessive induced current, causing problems such as ablation, melting, and breakage of the grounding wire. In addition, the clamping screw of the grounding clamp cannot be operated with force, and the clamping force between the movable pressure block and the conductor is insufficient, which is also prone to heat generation problems. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an ultra-high voltage security anti-inductive electric current grounding device which can not only avoid the loosening problem caused by insufficient clamping force, but also reduce the shaking problem of the grounding wire caused by external factors.

[0004] In order to solve the above technical problems, the utility model discloses an ultra-high voltage security and anti-inductive electric current grounding device, comprising a grounding clamp having a connecting portion and a hook portion, a pressure block placed in the grounding clamp, and an adjusting clamping screw connected to the bottom end of the pressure block and screwed to the grounding clamp. A locking component for locking the adjusting clamping screw is provided on the side of the connecting portion, a soft contact surface is provided on the inner surface of the hook portion and the upper surface of the pressure block, a foldable force rod is hinged on the bottom of the adjusting clamping screw, and a grounding lead is connected to the side of the connecting portion.

[0005] The grounding lead is connected with a bus connection lock.

[0006] The converging connection lock comprises a three-phase-in-one pipe and three movable joints and a fixed joint connected to four surfaces of the three-phase-in-one pipe.

[0007] The movable joint comprises a grounding plug, a connection lock lead connected to the grounding plug, and a plug locking nut matched with the grounding plug and used for connecting to the joint socket of the three-phase-in-one pipe.

[0008] The soft contact surface comprises an upper braided copper belt arranged on the inner surface of the hook portion and a lower braided copper belt arranged on the upper surface of the pressing block.

[0009] The grounding lead is fixed to the side of the connecting part through a copper nose, and a lead pressing piece located below the copper nose is also fixedly mounted on the connecting part.

[0010] The copper nose fixing position is also provided with an auxiliary lead, and the auxiliary lead is connected to the pressing block.

[0011] The grounding lead is formed by twisting a plurality of copper wires.

[0012] The advantages of the utility model are:

[0013] (1) After the grounding clamp is pressed against the conductor, the adjusting clamping screw is locked by the locking component, thereby preventing the release of pressure between the grounding clamp and the conductor caused by natural shaking and external forces, and solving the problem of looseness between the grounding clamp and the conductor.

[0014] (2) The gap between the soft contact and surface contact movable pressure block and the sliding groove is small, and it can move freely up and down, which can reduce the internal resistance of the grounding clamp itself.

[0015] (3) The force-adding operation can be performed by adding a force-adding rod made of epoxy material to the lower part of the clamping screw of the grounding clamp.

[0016] (4) The three-in-one busbar connection lock is used to reduce the shaking of the grounding wire caused by external factors, further improving the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the ultra-high voltage security and anti-inductive electric current grounding device of the utility model;

[0018] Figure 2 This is a schematic diagram of the use status of the ultra-high voltage security anti-inductive electric current drainage grounding device of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the grounding part in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the converging connection lock in the utility model;

[0021] Figure 5 It is a schematic diagram of the exploded structure of the converging connection lock in the utility model. DETAILED DESCRIPTION

[0022] The ultra-high voltage security and anti-inductive electric current grounding device of the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] As shown in the figure, the ultra-high voltage security and anti-inductive electric current grounding device of the utility model comprises a grounding clamp 3 having a connecting portion 1 and a hook portion 2, a pressure block 4 placed in the grounding clamp, and an adjusting clamping screw 5 connected to the bottom end of the pressure block and screwed to the grounding clamp. As can be seen from the figure, the grounding clamp 3 is composed of an L-shaped connecting portion 1 and a hook portion connected to the top of the vertical section of the connecting portion. A locking component 6 for locking the adjusting clamping screw 5 is arranged on the side of the horizontal section of the connecting portion 1. The locking component 6 can be a locking nut. The inner surface of the hook portion 2 and the upper surface of the pressure block 4 are both provided with soft contact surfaces. As can be seen from the figure, the soft contact surface comprises an upper braided copper strip 16 arranged on the inner surface of the hook portion 2 and a lower braided copper strip 17 arranged on the upper surface of the pressure block 4. That is to say, a braided soft copper strip is provided in the hook portion of the grounding clamp 1 and the recess of the pressure block, which can increase the contact area of ​​the wire and improve the conductivity The bottom of the adjusting and clamping screw 5 is hinged with a foldable force rod 7, which can be an insulating rod made of epoxy material. The side of the connecting part 1 is connected to a grounding lead 8, which is twisted by multiple copper wires, and the grounding lead 8 is connected to a bus connection lock. Specifically, the hook 2 of the grounding clamp is surrounded by an upper braided copper tape, and the lower part of the grounding clamp is equipped with a pressure block connected to the adjusting and clamping screw. The surface of the pressure block is wrapped with a lower braided copper tape. The grounding clamp adopts a large opening design and can clamp wires with a diameter of 50 to 80. Rotating the adjusting and clamping screw can make the pressure block move vertically upward or downward. The locking nut provided on the grounding clamp can fix the adjusting and clamping screw; after manually rotating to the bottom, the force rod can be used to tighten the force to make the grounding clamp and the wire connected tightly. As can be seen from the figure, a foldable force rod is provided at the bottom of the insulating rod to enhance the clamping force.

[0024] Furthermore, the busbar connection lock includes a three-phase-in-one pipe 9 and three movable joints 10 and a fixed joint 11 connected to four surfaces of the three-phase-in-one pipe. The movable joint 10 includes a grounding plug 12, a connection lock lead 13 connected to the grounding plug, and a plug locking nut 15 that cooperates with the grounding plug and is used to connect to the joint socket 14 of the three-phase-in-one pipe 9. Specifically, the three-phase-in-one pipe 9 is a square aluminum tube, and the four faces of the square aluminum tube are the same size. Grounding sockets are installed on three of the faces, and the fixed joint 11 is installed on one face. The fixed joint 11 uses copper wire, and a grounding clamp (or pin) is installed on the other end of the lead.

[0025] Furthermore, the grounding lead 8 is fixed to the side of the connecting part 1 through a copper nose 18, and a lead clamping plate 19 located below the copper nose is also fixedly installed on the connecting part 1. The grounding lead can be further fixed by the set lead clamping plate so that it will not shake violently and cause the lead to loosen; an auxiliary lead 20 is also provided at the fixing place of the copper nose 18, and the auxiliary lead 20 is connected to the pressure block, the pressure block and the grounding clamp to improve the conductivity and make the grounding clamp safer to use.

[0026] When installing the grounding, first clamp the grounding end of the busbar connection lock, then insert the grounding plugs of the grounding leads of the grounding clamp into the grounding sockets of the collector, lock the plug locking nut, screw the pressure block of the grounding clamp to the lowest point, hang the grounding clamp on the wire, and then tighten the pressure block.

[0027] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An ultra-high voltage safety and anti-inductive current grounding device, comprising a grounding clamp (3) having a connecting portion (1) and a hook portion (2), a pressing block (4) arranged in the grounding clamp, and an adjusting and tightening screw (5) connected to the bottom end of the pressing block and screwed to the grounding clamp, characterized in that: A locking component (6) for locking the adjusting and pressing screw (5) is arranged on the side of the connecting portion (1), the inner surface of the hook portion (2) and the upper surface of the pressing block (4) are both provided with soft contact surfaces, a foldable force rod (7) is hinged at the bottom of the adjusting and pressing screw (5), and a grounding lead (8) is connected to the side of the connecting portion (1).

2. The ultra-high voltage security and anti-inductive current grounding device according to claim 1 is characterized in that: The grounding lead (8) is connected to a busbar connection lock.

3. The ultra-high voltage security and anti-inductive current grounding device according to claim 2 is characterized in that: The converging connection lock comprises a three-phase-in-one pipe (9), three movable joints (10) connected to four surfaces of the three-phase-in-one pipe, and a fixed joint (11).

4. The ultra-high voltage security and anti-inductive current grounding device according to claim 3 is characterized in that: The movable joint (10) comprises a grounding plug (12), a connection lock lead (13) connected to the grounding plug, and a plug locking nut (15) that cooperates with the grounding plug and is used to connect to a joint socket (14) of a three-phase-in-one pipe (9).

5. The ultra-high voltage security and anti-inductive current grounding device according to claim 1, 2 or 4, characterized in that: The soft contact surface comprises an upper braided copper belt (16) arranged on the inner surface of the hook portion (2) and a lower braided copper belt (17) arranged on the upper surface of the pressing block (4).

6. The ultra-high voltage security and anti-inductive current grounding device according to claim 5 is characterized in that: The grounding lead (8) is fixed to the side of the connecting portion (1) via a copper nose (18), and a lead clamping piece (19) located below the copper nose is also fixedly mounted on the connecting portion (1).

7. The ultra-high voltage security and anti-inductive current grounding device according to claim 6 is characterized in that: An auxiliary lead (20) is also provided at the fixing position of the copper nose (18), and the auxiliary lead is connected to the pressing block.

8. The ultra-high voltage security and anti-inductive current grounding device according to claim 1 is characterized in that: The grounding lead (8) is formed by twisting a plurality of copper wires.

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