Anti-erosion power transmission line grounding device

Abstract

The utility model discloses an anti-erosion power transmission line grounding device which comprises an upper connector lug, a grounding ground wire and a buried ground wire, the upper end of the grounding ground wire is connected with an overhead ground wire through the upper connector lug, the lower end of the grounding ground wire is connected with the buried ground wire, at least two buried anchor rods are arranged on the buried ground wire, the buried ground wire is buried underground through the buried anchor rods, and the buried anchor rods are connected with the ground wire. A fixing groove with the same length as the buried anchor rod is axially formed in the buried anchor rod, a branch ground wire is arranged in the fixing groove and fixed through a pressing and fixing piece, a clamping groove perpendicular to the fixing groove is formed in the top of the buried anchor rod, a grounding ground wire penetrates into the clamping groove to be connected with the branch ground wire, and the pressing and fixing piece is arranged in the clamping groove in a matched mode for fixing. According to the utility model, the physical and chemical stable characteristics of high conductivity, corrosion resistance and the like of the graphene material are utilized, the defects that the existing ground wire is easy to rust and damage and needs regular maintenance and replacement are overcome, the grounding conductivity is improved, the service life is prolonged, the ground electrode laying task on various terrains can be adapted, the maintenance and replacement frequency is reduced, and the safe operation of the line is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of power transmission equipment technology, and in particular relates to an anti-corrosion power transmission line grounding device. Background Technology

[0002] In the construction and operation of transmission towers, the grounding electrode is a crucial facility. The grounding electrode is used to establish a reliable grounding connection between the transmission tower structure and the ground, ensuring the safe operation of the power transmission system. Traditional transmission line tower grounding electrode designs are relatively simple, mostly using metal materials such as flat steel and round steel as grounding electrodes. However, these grounding materials are not corrosion-resistant, leading to increased grounding resistance. Constant exposure to external factors such as wind, rain, and temperature changes can cause the grounding electrode body and its connections buried in the soil to corrode and be damaged, significantly reducing grounding conductivity and ultimately rendering the important function of grounding safety protection ineffective, thus posing a hidden danger to the safe operation of the line.

[0003] Therefore, developing an erosion-resistant grounding electrode for power transmission lines is the key to solving the problem. Utility Model Content

[0004] The present invention provides a grounding device for transmission lines that is resistant to corrosion.

[0005] This utility model is achieved through the following technical solution: it includes an upper connector, a grounding wire, and a buried grounding wire. The upper end of the grounding wire is connected to an overhead grounding wire through the upper connector, and the lower end is connected to a buried grounding wire. At least two buried anchor rods are installed on the buried grounding wire, which bury the buried grounding wire underground. A fixing groove of the same length as the grounding wire is axially provided on the buried anchor rod. A branch grounding wire is installed in the fixing groove and fixed with a clamping fastener. A slot perpendicular to the fixing groove is opened at the top of the buried anchor rod. The grounding wire is inserted into the slot to connect the branch grounding wire, and a clamping fastener is provided in the slot for fixation.

[0006] The beneficial effects of this utility model are as follows: By applying graphene flexible grounding flat strips to the field of power transmission and distribution, the strips can be adjusted to fit transmission piles of different outer diameters. The bottom fixing device can increase the firmness of the graphene flexible grounding flat strips buried underground, effectively preventing them from being easily pulled out of the ground, thus ensuring the reliability of grounding. On the other hand, by utilizing the unique physical and chemical stability properties of graphene flexible grounding flat strips, such as high conductivity, chemical inertness, thermal stability, and corrosion resistance, the grounding conductivity and service life can be effectively improved, the maintenance and replacement frequency can be reduced, and the grounding resistance can be lowered. It can adapt to the grounding electrode laying tasks in various terrains, solving the drawbacks of existing grounding wires that are easily corroded and damaged, requiring regular maintenance and replacement, and ensuring the safe operation of the line. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the connection structure of this utility model;

[0008] Figure 2 A schematic diagram of the structure of buried anchor rods and grounding wires;

[0009] Figure 3 for Figure 2 A schematic diagram of the left-side view structure;

[0010] Figure 4 This is a schematic diagram of the structure of a buried anchor bolt;

[0011] Figure 5 for Figure 4 A schematic diagram of the left-side view structure;

[0012] Figure 6 This is a schematic diagram of the compression fitting structure;

[0013] The numbers in the diagram are: 1~ Top connector, 2~ Grounding wire, 3~ Buried grounding wire, 4~ Branch grounding wire, 5~ Buried anchor rod, 6~ Fixing groove, 7~ Pressing fastener, 8~ Pressure plate, 9~ Pressure block, 10~ Insert rod, 11~ Slot, 12~ Extension groove. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0015] like Figures 1-6 The erosion-resistant transmission line grounding device shown includes an upper connector 1, a grounding wire 2, and a buried grounding wire 3. The upper connector 1 can be any type of connector in the prior art. The upper end of the grounding wire 2 is connected to an overhead grounding wire through the upper connector 1, and the lower end is connected to the buried grounding wire 3. At least two buried anchor rods 5 are installed on the buried grounding wire 3, burying the buried grounding wire 3 underground. A fixing groove 6 of the same length as the grounding anchor rod 5 is axially installed on the grounding anchor rod 5. The fixing groove 6 is U-shaped. A branch grounding wire 4 is installed in the fixing groove 6 and fixed with a clamping fastener 7. A slot 11 perpendicular to the fixing groove 6 is opened at the top of the buried anchor rod 5. The grounding wire 2 is inserted into the slot 11 to connect the branch grounding wire 4, and the clamping fastener 7 is installed in the slot 11 for fixation. Since the fixing groove 6 is an open structure, the branch grounding wire 4 can fully contact the soil to achieve the function of grounding and conducting electricity.

[0016] The anchor rod has a downward extending groove 12 on its back side, and the extending groove 12 is connected to the slot 11 and the fixing groove 6 in a J-shaped structure.

[0017] At least two clamping members 7 are provided axially in the fixing groove 6. The clamping member 7 includes a pressure plate 8 and a pressure block 9. The width of the pressure plate 8 is the same as the width of the fixing groove 6. A protrusion is provided on any side of the pressure plate 8. A protrusion is provided on the lower surface of the pressure block 9. The protrusions increase the friction with the branch ground wire 4 to prevent slippage, and the pressure block 9 is engaged with the fixing groove 6.

[0018] The fixing groove 6 is provided with at least two insertion holes in each direction along the axis. The insertion holes penetrate the anchor rod. The lower surface of the clamping member 7 in the fixing groove 6 is provided with an insertion rod 10 that is inserted and matched with it. The insertion rod 10 and the integrally formed structure are arranged in a T-shape. A through hole is provided on the pressure plate 8. When using the insertion rod 10, a through hole needs to be opened on the branch ground wire 4 to facilitate the insertion rod 10 to pass through and be fixed.

[0019] The width of the pressure block 9 is 0.3~1mm greater than the width of the fixing groove 6 and the slot 11, so as to ensure that the pressure block 9 can be fixed in the fixing groove 6 and the slot 11 respectively and avoid falling off.

[0020] The buried anchor 5 is a concrete pile with a pointed end at its lower end, and the clamping component 7 is a concrete block or stone block.

[0021] The grounding wire 2, buried grounding wire 3, and branch grounding wire 4 are made of graphite-based flexible grounding flat strips, and the buried anchor rods 5 are made of concrete pile material. This solves the problem that traditional buried metal pole grounding is prone to corrosion and damage, ensures the reliability of the grounding device, and greatly improves its service life.

[0022] The card slot 11 and the clamping fastener 7 that is adapted to the card slot 11 are arranged in a trapezoidal structure.

[0023] Furthermore, the height of the buried anchor 5 is not less than 100cm.

[0024] The working method of this utility model:

[0025] First, connect the upper end of the grounding wire 2 to the overhead grounding wire through the upper connector 1, and extend the lower end to the ground at the bottom of the power tower. Then, according to the burial requirements, dig at least two pits on the bottom surface, and connect the pits with trenches. The trenches are 20-30cm deep and extended by multiple buried anchor rods 5. This can quickly guide the current to distant places and underground, thereby preventing personnel casualties caused by excessive voltage at the bottom of the power tower.

[0026] Secondly, at least two pressure plates 8 are provided in the fixing groove 6 of each buried anchor 5, with the protruding side of the pressure plate 8 facing upwards to contact the branch ground wire 4; the branch ground wire 4 is placed into the fixing groove 6 of the buried anchor 5, and the pressure block 9 of the clamping fastener 7 is pressed in, so that the pressure block 9 is locked in the fixing groove 6, thereby fixing the branch ground wire 4 in the fixing groove 6 and preventing it from falling out of the fixing groove 6 under tension;

[0027] Third, bend the upper end of the branch ground wire 4 backward into a U-shape and press it into the slot 11 and extension slot 12. Bend the ground wire 2 downward into an L-shape and press it into the slot 11 and fixing slot 6. Then put the buried ground wire 3 into the slot 11, so that the buried ground wire 3 presses on the ground wire 2, and the ground wire 2 presses on the branch ground wire 4, realizing the connection of the three. Finally, press the clamping fastener 7 into the slot 11 and press the clamping fastener 7 into the upper part of the fixing slot 6 to fix it. The above installation method is only applicable to the first buried anchor rod 5 that is close to the ground wire 2. For the other buried anchor rods 5, only one part of the above steps is needed. Pass the other end of the buried ground wire 3 through the other buried anchor rods 5 in sequence and fix it to the branch ground wire 4 through the clamping fastener 7. Finally, connect the buried ground wire 3 in series with the branch ground wire 4 on each buried anchor rod 5.

[0028] Fourth, after the buried ground wire 3 is connected to the branch ground wires 4 on each buried anchor rod 5, the buried anchor rod 5 is buried in the pit, the buried ground wire 3 is placed in the trench, and then the soil is filled and compacted. This completes the installation of the buried ground wire 3 and the buried anchor rod 5, and also completes the installation and laying of the power transmission line grounding device.

Claims

1. A corrosion-resistant transmission line grounding device, comprising an upper connector (1), a grounding wire (2), and a buried grounding wire (3), wherein the upper end of the grounding wire (2) is connected to an overhead grounding wire via the upper connector (1), and the lower end is connected to the buried grounding wire (3), characterized in that: At least two buried anchor rods (5) are installed on the buried ground wire (3). The buried anchor rods (5) bury the buried ground wire (3) underground. A fixing groove (6) of the same length as the buried anchor rod (5) is axially installed on the buried anchor rod (5). A branch ground wire (4) is installed in the fixing groove (6) and fixed with a clamping fastener (7). A slot (11) perpendicular to the fixing groove (6) is opened at the top of the buried anchor rod (5). A grounding wire (2) is inserted into the slot (11) to connect the branch ground wire (4), and a clamping fastener (7) is installed in the slot (11) for fixation.

2. The corrosion-resistant transmission line grounding device according to claim 1, characterized in that: The anchor rod has a downward extending groove (12) on its back side, and the extending groove (12) is connected to the slot (11) and the fixing groove (6) in a J-shaped structure.

3. The corrosion-resistant transmission line grounding device according to claim 1, characterized in that: At least two clamping members (7) are provided axially in the fixed groove (6). The clamping member (7) includes a pressure plate (8) and a pressure block (9). The width of the pressure plate (8) is the same as the width of the fixed groove (6). A protrusion is provided on any side of the pressure plate (8). A protrusion is provided on the lower surface of the pressure block (9). The pressure block (9) is engaged with the fixed groove (6).

4. The corrosion-resistant transmission line grounding device according to claim 1 or 3, characterized in that: The fixing groove (6) is provided with at least two insertion holes in the axial direction. The insertion holes penetrate the anchor rod. The lower surface of the clamping part (7) in the fixing groove (6) is provided with a plug rod (10) that is inserted and matched with it. The plug rod (10) and the integrally formed structure are arranged in a T-shape.

5. The corrosion-resistant transmission line grounding device according to claim 3, characterized in that: The width of the pressure block (9) is 0.3~1mm greater than the width of the fixing groove (6) and the card slot (11).

6. The corrosion-resistant transmission line grounding device according to claim 1, characterized in that: The buried anchor (5) is a concrete pile with a pointed end at its lower end, and the clamping component (7) is a concrete block or stone block.

7. The corrosion-resistant transmission line grounding device according to claim 1, characterized in that: The grounding wire (2), buried grounding wire (3), and branch grounding wire (4) are made of graphite-based flexible grounding flat strips.

8. The corrosion-resistant transmission line grounding device according to claim 1, characterized in that: The card slot (11) and the clamping fastener (7) adapted to the card slot (11) are arranged in a trapezoidal shape.

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