Vertical grounding electrode and corrosion-resistant tower grounding device

Abstract

The utility model discloses a vertical grounding electrode and a corrosion-resistant tower grounding device, which are used in the technical field of power grid equipment. The device comprises a plurality of grounding pipes and a plurality of connecting rods, the grounding pipes and the connecting rods are sequentially and alternately connected, and the connecting rods and the grounding pipes are in interference fit; a plurality of side wings are fixedly connected to the outer wall of the grounding pipe at the end part of the vertical grounding pipe and are arranged along the length direction of the grounding pipe; the grounding pipe is provided with at least two reducing pipe sections narrowing towards the middle part, and the two reducing pipe sections are oppositely arranged; the connecting rod is provided with at least two first variable-diameter rod sections narrowing towards the middle, and the two first variable-diameter rod sections are oppositely arranged. The first variable-diameter rod section is inserted into the variable-diameter pipe section, and the outer surface of the first variable-diameter rod section abuts against the inner surface of the variable-diameter pipe section; through interference fit, narrowing fit and triangular side wing design of the end grounding tube, the contact resistance of the whole vertical grounding electrode is effectively reduced, and the problems of large contact resistance and large implantation resistance of the conventional vertical grounding electrode are practically solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power grid equipment technical field especially relates to a vertical grounding electrode and corrosion -resistant type tower grounding device. BACKGROUND

[0002] As an important facility in the power system, the corrosion -resistant type tower grounding device can effectively introduce the fault current into the ground and limit the overvoltage, thereby guaranteeing the stable operation of equipment and personnel safety. The grounding electrode is buried in the ground for many years, and is affected by factors such as poor construction welding, long-term soil erosion and biological damage, and is prone to corrosion and fracture. Once the corrosion -resistant type tower grounding device fails, it will cause the equipment to be unable to effectively ground, thereby causing equipment damage, fire or electric shock and other serious electrical accidents, which poses a serious threat to the safe and stable operation of the entire power system.

[0003] In the prior art, the corrosion -resistant type tower grounding device is usually composed of a horizontal grounding electrode and a vertical grounding electrode. The vertical grounding electrode is formed by a plurality of vertical grounding pipes, and the plurality of vertical grounding pipes are connected by connecting pieces to form a vertical grounding electrode. Since the plurality of vertical grounding pipes are connected by connecting pieces, gaps and cracks are easily formed at the connection positions of the vertical grounding pipes and the connecting pieces, which reduces the contact area and increases the contact resistance of the vertical grounding electrode, thereby increasing the resistance of the entire grounding electrode and increasing the operation risk of the corrosion -resistant type tower grounding device. UTILITY MODEL CONTENTS

[0004] The utility model provides a vertical grounding electrode and corrosion -resistant type tower grounding device, aims at solving the problem of the large contact resistance of the current vertical grounding electrode.

[0005] The utility model provides a vertical grounding electrode, including a plurality of grounding pipes and a plurality of connecting rods, the grounding pipe and the connecting rod are alternately connected in sequence, the connecting rod is with the grounding pipe is interference fit,

[0006] The outer wall of the grounding pipe at the end of the vertical grounding electrode is connected and fixed with a plurality of side wings, and the plurality of side wings are arranged along the length direction of the grounding pipe.

[0007] The grounding pipe has at least two variable-diameter pipe sections, the two variable-diameter pipe sections are oppositely arranged, and the variable-diameter pipe sections gradually narrow along the direction from the end to the middle of the grounding pipe.

[0008] The connecting rod has at least two first variable-diameter rod sections, the two first variable-diameter rod sections are oppositely arranged, and the first variable-diameter rod sections gradually widen along the direction from the end to the middle of the connecting rod.

[0009] The first variable-diameter rod segment is inserted into the variable-diameter pipe segment, and the outer surface of the first variable-diameter rod segment is in abutment with the inner surface of the variable-diameter pipe segment.

[0010] In some embodiments of the first aspect, the ground pipe with the side wings is located at the top end of the vertical ground electrode.

[0011] In some embodiments of the first aspect, the side wings are regularly arranged around the center of the ground pipe, and the radial distance of the side wings gradually increases in the direction away from the connecting rod.

[0012] In some embodiments of the first aspect, the contact area of the first variable-diameter rod segment with the variable-diameter pipe segment is greater than the cross-sectional area of the ground pipe.

[0013] In some embodiments of the first aspect, the outer surface of the first variable-diameter rod segment has an inclination angle of 1-2°, the maximum outer diameter of the first variable-diameter rod segment is 10-11 mm, and the length of the first variable-diameter rod segment is 25-42 mm.

[0014] The inner surface of the variable-diameter pipe segment has an inclination angle of 1-2°, the maximum inner diameter of the variable-diameter pipe segment is 10-11 mm, and the length of the variable-diameter pipe segment is 25-42 mm.

[0015] In some embodiments of the first aspect, the ground pipe comprises two wide-diameter pipe segments, a narrow-diameter pipe segment, and two variable-diameter pipe segments.

[0016] Either side of the narrow-diameter pipe segment is sequentially arranged with one variable-diameter pipe segment and one wide-diameter pipe segment.

[0017] The inner diameter of the wide-diameter pipe segment is less than the maximum outer diameter of the connecting rod.

[0018] In some embodiments of the first aspect, the cross-sectional inner contour of the ground pipe is a regular polygon, the cross-sectional outer contour of the connecting rod is a regular polygon, and the ground pipe and the connecting rod are shape-matched.

[0019] In some embodiments of the first aspect, the ground pipe is an aluminum-copper-rare earth alloy pipe.

[0020] In some embodiments of the first aspect, the connecting rod comprises two first variable-diameter rod segments and two second variable-diameter rod segments.

[0021] The two first variable-diameter rod segments are arranged adjacently, and the second variable-diameter rod segment is arranged on one side of the end of the first variable-diameter rod segment adjacent to the connecting rod.

[0022] The second variable-diameter rod section gradually increases in size in a direction from the second variable-diameter rod section to the first variable-diameter rod section, and the maximum outer diameter of the second variable-diameter rod section is smaller than the minimum outer diameter of the first variable-diameter rod section.

[0023] In some embodiments of the first aspect, the vertical grounding electrode further comprises a driving head and a tip;

[0024] The driving head is inserted on the grounding pipe at the top end;

[0025] The tip is inserted on the grounding pipe at the bottom end, and the tip is in interference fit with the grounding pipe.

[0026] The utility model discloses a second aspect provides a kind of corrosion-resistant type tower grounding device, for being connected with the tower to be connected, comprising:

[0027] A plurality of vertical grounding electrodes of the first aspect are installed in the ground outside the tower foot of the tower to be connected, and the plurality of vertical grounding electrodes are all located outside the tower to be connected.

[0028] A plurality of aluminum-copper-rare earth alloy horizontal grounding electrodes are connected to the tower foot of the tower to be connected adjacent to one end of the aluminum-copper-rare earth alloy horizontal grounding electrode, and connected to the vertical grounding electrode adjacent to the other end of the aluminum-copper-rare earth alloy horizontal grounding electrode.

[0029] In some embodiments of the second aspect, a resistance reduction layer is provided outside the vertical grounding electrode and the aluminum-copper-rare earth alloy horizontal grounding electrode.

[0030] As can be seen from the above technical solutions, the utility model has the following advantages:

[0031] The embodiment of the utility model provides a vertical grounding electrode, because the connecting rod and the grounding pipe are in interference fit, the gap at the interference fit part of the two is very small, even almost zero gap, effectively reducing the contact resistance of the vertical grounding electrode, while ensuring the transmission of lightning current; and because the grounding pipe at the end of the vertical grounding electrode is provided with a wing outside, the wing can increase the contact area of the grounding pipe and the soil, ensure that the vertical grounding electrode and the surface soil do not have virtual connection, reduce the contact resistance, and compared with the traditional rectangular wing, the triangular wing can effectively reduce the implantation resistance; furthermore, because the connecting rod has a first variable-diameter rod section gradually widening from the end to the middle, the grounding pipe has a variable-diameter pipe section gradually narrowing from the end to the middle, the first variable-diameter rod section is inserted into the variable-diameter pipe section, the outer surface of the first variable-diameter rod section abuts against the inner surface of the variable-diameter pipe section, and the interference sealing structure is matched, the connection sealing property of the connecting rod and the grounding pipe is improved, dust and liquid in the outside environment are difficult to enter the connection part, the outer surface of the connecting rod has enough area directly contacting the inner surface of the grounding pipe, the effective direct contact area is increased, and the contact resistance of the two is further reduced.

[0032] In summary, the present application effectively reduces the contact resistance of the whole vertical grounding electrode by reducing the gap between the connecting rod and the grounding pipe, additionally increasing the contact area of the connecting rod and the grounding pipe, and increasing the contact area of the grounding pipe and the soil, and practically solves the problem of large contact resistance of the vertical grounding electrode. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0034] Figure 1 An overall structure explosion schematic diagram of the vertical grounding electrode is provided for the first aspect of the embodiments of the present application.

[0035] Figure 2 An overall structure explosion cross-sectional schematic diagram of the vertical grounding electrode is provided for the first aspect of the embodiments of the present application.

[0036] Figure 3 An overall structure longitudinal cross-sectional schematic diagram of the grounding pipe is provided for the first aspect of the embodiments of the present application.

[0037] Figure 4 An overall structure transverse cross-sectional schematic diagram of the grounding pipe is provided for the first aspect of the embodiments of the present application.

[0038] Figure 5 An overall structure longitudinal cross-sectional schematic diagram of the grounding pipe with side wings is provided for the first aspect of the embodiments of the present application.

[0039] Figure 6 An overall structure transverse cross-sectional schematic diagram of the grounding pipe with side wings is provided for the first aspect of the embodiments of the present application.

[0040] Figure 7 An overall structure longitudinal cross-sectional schematic diagram of the connecting rod is provided for the first aspect of the embodiments of the present application.

[0041] Figure 8 An overall structure transverse cross-sectional schematic diagram of the connecting rod is provided for the first aspect of the embodiments of the present application.

[0042] Figure 9 An overall structure schematic diagram of the connecting rod is provided for the first aspect of the embodiments of the present application.

[0043] Figure 10The longitudinal section view of the overall structure of the tip is provided for the first aspect of the embodiment of the utility model.

[0044] Figure 11 The horizontal section view of the overall structure of the tip is provided for the first aspect of the embodiment of the utility model.

[0045] Figure 12 The horizontal section view of the overall structure of the tip is provided for the first aspect of the embodiment of the utility model.

[0046] Figure 13 The longitudinal section view of the overall structure of the driving head is provided for the first aspect of the embodiment of the utility model.

[0047] Figure 14 The horizontal section view of the overall structure of the driving head is provided for the first aspect of the embodiment of the utility model.

[0048] Figure 15 The horizontal section view of the overall structure of the driving head is provided for the first aspect of the embodiment of the utility model.

[0049] Figure 16 The vertical section view of the corrosion-resistant type tower grounding device is provided for the second aspect of the embodiment of the utility model.

[0050] Figure 17 The horizontal view of the overall structure of the corrosion-resistant type tower grounding device is provided for the second aspect of the embodiment of the utility model.

[0051] Reference signs:

[0052] 1, grounding pipe; 10, wide diameter pipe section; 11, reducing pipe section; 12, narrow diameter pipe section; 13, side wing; 2, connecting rod; 20, first reducing rod section; 21, second reducing rod section; 3, driving head; 4, tip; a, vertical grounding pole; b, aluminum-copper-rare earth alloy horizontal grounding pole; c, tower foot. DETAILED DESCRIPTION

[0053] The utility model embodiment provides a vertical grounding pole and corrosion-resistant type tower grounding device, and aims at solving the problem of large contact resistance of the current vertical grounding pole.

[0054] In order to make the utility model purposes, features and advantages more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the following described embodiments are only a part of the embodiments of the utility model, rather than 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 are within the protection scope of the utility model.

[0055] Please refer to Figures 1 to 17 The utility model provides a vertical ground electrode for leading equipment tower foot, it is personal to include: a plurality of ground pipes 1 and a plurality of connecting rods 2, ground pipe 1 and connecting rod 2 are connected alternately, connecting rod 2 is interference fit with ground pipe 1,

[0056] The outer wall of the ground pipe 1 at the end of the vertical ground electrode is connected and fixed with a plurality of side wings 13, and the plurality of side wings 13 are arranged along the length direction of the ground pipe 1.

[0057] The ground pipe 1 has at least two variable-diameter pipe sections 11, the two variable-diameter pipe sections 11 are oppositely arranged, and the variable-diameter pipe section 11 gradually narrows in the direction from the end to the middle of the ground pipe 1.

[0058] The connecting rod 2 has at least two first variable-diameter rod sections 20, the two first variable-diameter rod sections 20 are oppositely arranged, and the first variable-diameter rod section 20 gradually widens in the direction from the end to the middle of the connecting rod 2; the first variable-diameter rod section 20 is inserted into the variable-diameter pipe section 11, and the outer surface of the first variable-diameter rod section 20 abuts against the inner surface of the variable-diameter pipe section 11.

[0059] In the installation process, the ground pipe 1 without the side wing 13 is first driven into the pre-prepared hole slot, then the end of the ground pipe 1 is connected with the connecting rod 2, then the remaining ground pipe 1 without the side wing 13 is connected at the end of the connecting rod 2, the ground pipe 1 without the side wing 13 and the connecting rod 2 are connected in cycles until the last ground pipe 1, the last ground pipe 1 has the side wing 13 and is connected to the connecting rod 2, in the grounding process of lightning current, the lightning current is transmitted from the equipment tower foot to the ground pipe 1 from top to bottom, in the transmission of the adjacent ground pipe 1, the lightning current is first transmitted from the original ground pipe 1 to the connecting rod 2, and then transmitted from the connecting rod 2 to the next ground pipe 1, and the transmission is repeated in sequence until the lightning current is led into the land at the bottom of the ground pipe 1.

[0060] From the above process, it can be known that the lightning current is transmitted between the different grounding pipes 1 and the connecting rods 2 for multiple times, so it is necessary to reduce the resistance at the connecting position of the two, and the embodiment has the following advantages compared with the prior art: first, the connecting rod 2 and the grounding pipe 1 are connected in an interference fit mode, the gap at the connecting position is extremely small, the contact area of the two is increased, and the contact resistance is reduced; second, the grounding pipe 1 at the bottom end of the vertical grounding electrode is externally fixed with the side wing 13, the side wing 13 can increase the contact area of the grounding pipe and the soil, and avoid the problem that the gap between the grounding body and the surface soil is increased and the grounding resistance is increased due to the fact that the implantation hole of the surface soil is easily expanded after being continuously impacted by the vertical grounding electrode; third, the connecting rod 2 and the grounding pipe 1 have good sealing performance, that is, the grounding pipe 1 has the gradually-narrowing pipe segment 11 from the end to the middle, the connecting rod 2 has the first gradually-widening rod segment 20 from the end to the middle, and the two are connected in the interference fit mode, so that the dust and liquid outside are difficult to enter the connecting position, the direct contact area is effectively increased, and the contact resistance of the two is further reduced; fourth, the connecting rod 2 and the grounding pipe 1 are in a splicable combination mode, the length of the vertical grounding electrode can be increased as much as possible, the operation requirement of the grounding resistance is ensured, and compared with the traditional horizontal net-shaped grounding scheme of the tower, the embodiment reduces the construction excavation area, saves the land occupation, and improves the construction efficiency.

[0061] In some specific embodiments, in the embodiment, the vertical grounding electrode is exemplified by two grounding pipes 1 and connecting rods 2, and it needs to be pointed out that other numbers of grounding pipes 1 and connecting rods 2, such as three grounding pipes 1 and two connecting rods 2, can be configured, and the person skilled in the art can select according to actual needs.

[0062] In some specific embodiments, as shown in Figure 1 and Figure 2 , the grounding pipe 1 provided with the side wing 13 can be the grounding pipe 1 at the top end of the vertical grounding electrode, that is, the grounding pipe 1 with the side wing 13 is the last one of the vertical grounding electrode and is implanted in the surface soil, the implantation hole of the surface soil is easily expanded after being continuously impacted by the vertical grounding electrode, a gap is caused between the vertical grounding electrode and the surface soil, and the grounding resistance is increased, so the surface soil uses the grounding pipe 1 with the side wing 13 to further increase the contact area of the grounding pipe 1 and the soil and ensure that no virtual connection occurs between the vertical grounding electrode and the surface soil.

[0063] In some other specific embodiments, the grounding pipe 1 provided with the side wing 13 can be the grounding pipe 1 at the bottom end of the vertical grounding electrode, or the grounding pipes 1 at the bottom end and the top end of the vertical grounding electrode can be provided with the side wing 13.

[0064] In some specific embodiments, as shown in Figure 5 and Figure 6As shown, the side wings 13 are regularly arranged around the center of the grounding pipe 1, and the radial distance of the side wings 13 gradually increases in the direction away from the connecting rod 2, forming a triangular side wing 13, which can reduce the resistance of the grounding electrode implanted into the soil compared to a common rectangular side wing 13.

[0065] In the embodiment, the number of side wings 13 is six, and the six side wings 13 are evenly arranged circumferentially around the center of the grounding pipe 1, each side wing 13 is opposite to one side of the hexagonal through hole, the longitudinal section of the side wing 13 is a right triangle, the thickness is 5 mm, and the large end extends by 15 mm.

[0066] In some specific embodiments, the embodiment provides a possible contact relationship between the connecting rod 2 and the grounding pipe 1, the contact area of the first variable-diameter rod section 20 and the variable-diameter pipe section 11 is greater than the cross-sectional area of the grounding pipe 1, and after the contact area is greater than the cross-sectional area, it is ensured that the connecting pipe has sufficient contact area with the connecting rod 2, the contact resistance is reduced, the electrical connection requirement is met, and the lightning current can be transmitted to the next vertical grounding electrode through the connecting rod 2.

[0067] In the embodiment, as shown in Figure 3 and Figure 4 , the inclination angle of the outer surface of the first variable-diameter rod section 20 is 2°, the distance between opposite sides of the regular hexagon at the maximum outer diameter of the first variable-diameter rod section 20 is 10.7 mm, and the length of the first variable-diameter rod section 20 is 42 mm; the inclination angle of the inner surface of the variable-diameter pipe section 11 is 2°, the distance between opposite sides of the regular hexagon at the maximum inner diameter of the variable-diameter pipe section 11 is 10 mm, and the length of the variable-diameter pipe section 11 is 42 mm. After complete combination, the horizontal contact length of the grounding pipe 1 and the connecting rod 2 is 23.95 mm, the contact area is ≥5.77*23.95*6=829.149 square millimeters, which is much larger than the cross-sectional area of the grounding pipe 1 (227.5 square millimeters).

[0068] In some specific embodiments, as shown in Figures 3 to 9 , the embodiment provides a possible shape relationship between the connecting rod 2 and the grounding pipe 1, the inner contour of the cross section of the grounding pipe 1 is a regular polygon, the outer contour of the cross section of the connecting rod 2 is a regular polygon, the grounding pipe 1 and the connecting rod 2 are shape-matched, and the regular polygon can prevent the grounding electrode from rotating during the installation of the electric grab, because the entire vertical grounding electrode is installed downward by the construction personnel, and the rotation of the vertical grounding electrode will make the construction personnel unstable, affecting the installation accuracy.

[0069] In the embodiment, as shown in Figure 3 and Figure 4As shown, the outer contour of the cross-section of the connecting rod 2 is a regular hexagon, and the inner contour of the cross-section of the grounding pipe 1 is also a regular hexagon. Of course, those skilled in the art can use other regular polygons, such as regular triangles, squares, pentagons, etc., and can choose according to their actual needs.

[0070] In some specific embodiments, such as Figure 3 As shown, this embodiment provides a possible implementation structure for the grounding pipe 1. The grounding pipe 1 includes two wide-diameter pipe sections 10, a narrow-diameter pipe section 12, and two variable-diameter pipe sections 11. A variable-diameter pipe section 11 and a wide-diameter pipe section 10 are sequentially arranged on either side of the narrow-diameter pipe section 12. The inner diameter of the wide-diameter pipe section 10 is smaller than the maximum outer diameter of the connecting rod 2. That is, the entire grounding pipe 1 is arranged sequentially from one end to the other as: wide-diameter pipe section 10, variable-diameter pipe section 11, narrow-diameter pipe section 12, variable-diameter pipe section 11, and wide-diameter pipe section 10, forming a symmetrical trumpet-shaped structure. When the connecting rod 2 is inserted into the grounding pipe... When grounding pipe 1 is connected, the first variable diameter section 20 of connecting rod 2 extends into the variable diameter pipe section 11. As the connection extends, the first variable diameter section 20 will gradually form an interference fit structure with the wide diameter pipe section 10. When the interference fit structure is fully formed, the side of the first variable diameter section 20 adjacent to the narrow diameter pipe section 12 will abut against the variable diameter pipe section 11, and the side of the first variable diameter section 20 away from the narrow diameter pipe section 12 will form an interference fit structure with the wide diameter pipe section 10. The structure has a good sealing effect, preventing external substances from entering the connection and increasing the contact area between connecting rod 2 and grounding pipe 1.

[0071] In this embodiment, the grounding pipe 1 is an aluminum-copper-rare-earth alloy pipe, which is integrally formed by hot extrusion of aluminum-copper-rare-earth alloy. Aluminum-copper-rare-earth alloy has excellent electrical properties and resistance to soil corrosion, meeting the requirements for a 40-year lifespan without the need for excavation and replacement, thus reducing the total life-cycle cost. It also solves the problems of poor corrosion resistance of existing galvanized steel materials used in pole grounding bodies, and the environmental pollution caused by the release of heavy metal ions from pure copper materials when in contact with soil and water. This design is environmentally friendly.

[0072] In this embodiment, the length of a single grounding pipe 1 is 1.25m, the outer diameter of grounding pipe 1 is 20mm, the inner contour of the wide diameter pipe section 10 of grounding pipe 1 is a regular hexagonal through hole with a side-to-side distance of 10mm, and the inner contour of the narrow diameter pipe section 12 is a regular hexagonal through hole with a side-to-side distance of 8mm.

[0073] In some specific embodiments, such as Figures 7 to 9As shown, the embodiment provides a possible implementation structure of the connecting rod 2, which includes two first variable-diameter rod segments 20 and two second variable-diameter rod segments 21; the two first variable-diameter rod segments 20 are arranged adjacently, and the second variable-diameter rod segments 21 are arranged on one side of the end of the connecting rod 2 adjacent to the first variable-diameter rod segments 20; in the direction from the second variable-diameter rod segments 21 to the first variable-diameter rod segments 20, the second variable-diameter rod segments 21 gradually increase in size, and the maximum outer diameter of the second variable-diameter rod segments 21 is smaller than the minimum outer diameter of the first variable-diameter rod segments 20, that is, the end-to-end arrangement of the entire connecting rod 2 is: the second variable-diameter rod segments 21, the first variable-diameter rod segments 20, the first variable-diameter rod segments 20, and the second variable-diameter rod segments 21, forming an olive-like structure, and the first variable-diameter rod segments 20 are arranged to abut the variable-diameter pipe segment 11, and after the second variable-diameter rod segments 21 are arranged, the connecting rod 2 is conveniently aligned and inserted into the grounding pipe 1, avoiding the need for the connecting rod 2 to be aligned for a long time during construction by the construction personnel.

[0074] In the embodiment, the single length of the connecting rod 2 is 96 mm, the maximum outer diameter of the connecting rod 2 is a regular hexagon with a side distance of 10.7 mm, which can be in interference fit with the 110 mm regular hexagonal through hole of the grounding pipe 1, to realize stable connection of the two; the distance of the first variable-diameter rod segment 20 is 42 mm, the outer surface of the first variable-diameter rod segment 20 is inclined at an angle of 2°, and after the first variable-diameter rod segment 20 is completely combined with the variable-diameter pipe segment 11, the horizontal contact length of the grounding pipe 1 and the connecting rod 2 is 23.95 mm; the small end of the second variable-diameter rod segment 21 is a regular hexagon with a side distance of 8 mm after the guide angle, which facilitates the quick insertion of the connecting rod 2 into the vertical grounding electrode during construction; the material of the connecting rod 2 is carbon steel, which is integrally precision cast to ensure that the connecting rod 2 does not deform during the connection of the vertical grounding electrode.

[0075] In some specific embodiments, as shown in Figure 1 , Figure 2 , Figures 10 to 15 In order to facilitate the construction of the vertical grounding electrode, the vertical grounding electrode further includes a driving head 3 and a sharp end 4, the driving head 3 is inserted into the grounding pipe 1 at the top end; the sharp end 4 is inserted into the grounding pipe 1 at the bottom end, and the sharp end 4 is in interference fit with the grounding pipe 1, and the arrangement of the sharp end 4 and the driving head 3 can effectively solve the problems of easy deformation and difficult construction of the vertical grounding electrode during implantation into the soil.

[0076] In the embodiment, as shown in Figures 10 to 12As shown, the tip 4 is mounted on the head of the grounding pipe 1, which is used to reduce the soil resistance during construction; the tip 4 can be divided into two parts, one part is a conical body with a base diameter of 20 mm and a head with a 56° sharp angle, which is used to break the soil and reduce the soil resistance during construction; the other part is a hexagonal column with a large end of 10.6 mm and a small end of 8 mm, which can be inserted into the grounding pipe 1 and form an interference fit; the tip 4 is made of carbon steel and is integrally formed by precision casting, which can effectively solve the problem of low mechanical strength of the aluminum-copper-rare earth alloy grounding pipe 1, which is easy to deform during implantation into the soil and difficult to construct.

[0077] In this embodiment, as shown in Figures 13 to 15 , the driving head 3 directly bears the impact force of the electric pick during construction, preventing the deformation of the regular hexagonal hole of the grounding pipe 1; the driving head 3 can be divided into two parts, the large end is a cylindrical body with a diameter of 20 mm and a height of 20 mm, which can be directly inserted into the electric pick or oil pick, used to directly bear the impact force of the electric pick during construction; the small end is a regular hexagonal column with a side distance of 9.5 mm, which can be gap-fitted with the 110 mm regular hexagonal through hole of the grounding pipe 1, facilitating the insertion of the regular hexagonal through hole of the grounding pipe 1 during construction, and preventing the deformation of the regular hexagonal hole of the grounding pipe 1 due to direct impact of the electric pick; the driving head 3 is made of carbon steel and is integrally formed by precision casting.

[0078] Based on the above embodiment, please refer to Figure 16 and Figure 17 , a corrosion-resistant tower grounding device is provided, which can implement a deep vertical grounding scheme, uses vertical grounding electrodes a as the main grounding material, extends vertically into the ground, and reduces the amount of horizontal grounding electrodes, thereby greatly reducing the construction excavation area, specifically including:

[0079] A plurality of vertical grounding electrodes a, which are installed in the ground outside the tower foot c of the tower to be connected, and the plurality of vertical grounding electrodes a are located outside the tower to be connected;

[0080] A plurality of aluminum-copper-rare earth alloy horizontal grounding electrodes b, one end of the aluminum-copper-rare earth alloy horizontal grounding electrode b is connected to the tower foot c of the adjacent tower to be connected, and the other end of the aluminum-copper-rare earth alloy horizontal grounding electrode b is connected to the adjacent vertical grounding electrode a.

[0081] During lightning current grounding, the lightning current is transmitted from the equipment tower foot c to the aluminum-copper-rare earth alloy horizontal grounding electrode b, and then from the aluminum-copper-rare earth alloy horizontal grounding electrode b to the vertical grounding electrode a, and then guided by the vertical grounding electrode a to the inside of the land.

[0082] Compared with the prior art, the grounding device has the following advantages: first, the contact resistance of the vertical grounding electrode a is low, and the operation risk of the corrosion-resistant tower grounding device is low; second, the vertical grounding electrode a and the horizontal grounding electrode are both made of aluminum-copper-rare earth alloy grounding material as the main grounding conductor, which improves the corrosion resistance of the grounding body and the service life of the grounding net compared with the traditional galvanized steel material; compared with the traditional pure copper material, the economic cost of the grounding body is reduced, the heavy metal pollution of the pure copper material is avoided, and the application range of the grounding net is expanded; third, due to the assembled structure of the vertical grounding electrode a, compared with the traditional tower horizontal net grounding scheme, the utility model reduces the construction excavation area, saves the land occupation, and improves the construction efficiency.

[0083] In the embodiment, the horizontal grounding electrode is a component for connecting the vertical grounding electrode a and the tower, and the horizontal grounding body is a circular rod with a diameter of 12 mm.

[0084] In some specific embodiments, in order to reduce the grounding resistance, the vertical grounding electrode a and the aluminum-copper-rare earth alloy horizontal grounding electrode b are both provided with a resistance reduction layer, and after the resistance reduction agent is filled around the vertical grounding electrode a and the aluminum-copper-rare earth alloy horizontal grounding electrode b, the resistance reduction effect can be significantly improved.

[0085] In some specific application processes, the embodiment provides a possible installation method of the corrosion-resistant tower grounding device, which includes the following steps:

[0086] S1, earthwork preparation. The installation scheme of the tower vertical grounding device is as shown in Figure 16 The installation position of the vertical grounding electrode a is 0.7-1 m away from the diagonal outside of the tower foot c, and a ground drill is used to drill a circular pit with a diameter of 0.25 m and a depth of 0.8 m at the corresponding position of each tower foot c. Then, a grounding trench with a depth of 0.3 m and a width of 0.25 m is dug from each circular pit to the corresponding tower foot c.

[0087] S2, vertical grounding electrode a implantation. A grounding pipe 1 is punched into the center of the circular pit, the two ends of the grounding pipe 1 are respectively provided with a sharp end 4 and a driving head 3, the sharp end 4 faces downward during construction, the driving head 3 is inserted into an electric grab or an oil grab, and the grounding pipe 1 is implanted into the ground by impacting the driving head 3 through the electric grab or the oil grab; after the construction of one vertical grounding electrode a is completed, the driving head 3 is taken out, a connecting rod 2 is inserted into the regular hexagonal hole in the vertical grounding electrode a, and then a second grounding pipe 1 is sleeved on the other end of the connecting rod 2; after the driving head 3 is installed, the electric grab or the oil grab is used to continue the construction towards the ground until the grounding resistance meets the requirements; the connection schematic diagram of the sharp end 4, the vertical grounding electrode a, the connecting rod 2 and the driving head 3 is as shown in Figure 1 and Figure 2 .

[0088] S3, horizontal grounding body connection. The horizontal grounding body is used to connect the tower foot c with the vertical grounding electrode a in the pre-excavated grounding trench, the horizontal grounding body and the tower are bolted by using the connecting plate, the horizontal grounding body and the vertical grounding electrode a are welded by using argon arc welding, the overlapping length is 6 times of the diameter of the round bar, and the grounding body connection schematic view is as shown in Figure 16 and Figure 17 .

[0089] S4, filling of resistance reducing agent. In order to further reduce the grounding resistance, the powder resistance reducing agent is mixed with water, and a slurry is prepared in proportion, then the slurry resistance reducing agent is poured into the round pit with the vertical grounding electrode a and the grounding trench with the horizontal grounding body, the filling thickness of the round pit is 0.6 m, and the filling thickness of the grounding trench is 0.1 m. After the resistance reducing agent is filled, the surrounding soil is watered to enhance the resistance reducing effect.

[0090] S5, original soil backfilling. The original soil taken out of the round pit and the grounding trench is screened, the gravel and weathered rock fragments are removed, the fine soil is backfilled to the surface of the resistance reducing agent, and is tamped in layers until the backfilled soil is flush with the ground, and the installation of the entire corrosion-resistant tower grounding device is completed.

[0091] The above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the utility model.

[0092] Finally, it should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations.

Claims

1. A vertical grounding electrode, comprising a plurality of grounding pipes and a plurality of connecting rods; the grounding pipes and the connecting rods are alternately connected in sequence, and the connecting rods are in interference fit with the grounding pipes; characterized in that: a plurality of side wings are fixedly connected to the outer wall of the grounding pipe at the end of the vertical grounding electrode, and the side wings are arranged along the length direction of the grounding pipe; the grounding pipe has at least two variable-diameter pipe sections, the two variable-diameter pipe sections are oppositely arranged, and the variable-diameter pipe sections gradually narrow in the direction from the end to the middle of the grounding pipe; the connecting rod has at least two first variable-diameter rod sections, the two first variable-diameter rod sections are oppositely arranged, and the first variable-diameter rod sections gradually widen in the direction from the end to the middle of the connecting rod; the first variable-diameter rod sections are inserted into the variable-diameter pipe sections, and the outer surface of the first variable-diameter rod sections abuts against the inner surface of the variable-diameter pipe sections.

2. The vertical ground electrode of claim 1, wherein The grounding pipe with the side wings is located at the top end of the vertical grounding electrode.

3. The vertical ground electrode of claim 1, wherein The side wings are regularly arranged around the center of the grounding pipe, and the radial distance of the side wings gradually increases in the direction away from the connecting rod.

4. The vertical ground electrode of claim 1, wherein The contact area of the first variable-diameter rod section and the variable-diameter pipe section is greater than the cross-sectional area of the grounding pipe.

5. The vertical ground electrode of claim 1, wherein The inner contour of the cross section of the grounding pipe is a regular polygon, the outer contour of the cross section of the connecting rod is a regular polygon, and the grounding pipe and the connecting rod are shape-matched.

6. The vertical ground electrode of claim 1, wherein The grounding pipe comprises two wide-diameter pipe sections, a narrow-diameter pipe section, and two variable-diameter pipe sections; one of the variable-diameter pipe sections and one of the wide-diameter pipe sections are arranged in sequence on either side of the narrow-diameter pipe section; the inner diameter of the wide-diameter pipe section is smaller than the maximum outer diameter of the connecting rod.

7. The vertical ground electrode according to any one of claims 1 to 6, characterized in that The grounding pipe is an aluminum-copper-rare earth alloy pipe.

8. The vertical ground electrode of claim 1, wherein The vertical grounding electrode further comprises a driving head and a tip; the driving head is inserted into the grounding pipe at the top end; the tip is inserted into the grounding pipe at the bottom end, and the tip is in interference fit with the grounding pipe.

9. A corrosion-resistant type tower grounding device for connecting with a tower to be connected, characterized by, Comprising: a plurality of vertical grounding electrodes according to any one of claims 1 to 8, which are installed in the ground outside the tower foot of the to-be-connected tower, and the vertical grounding electrodes are all located outside the to-be-connected tower; a plurality of aluminum-copper-rare earth alloy horizontal grounding electrodes, one end of which is connected to the tower foot of the adjacent to-be-connected tower, and the other end of which is connected to the adjacent vertical grounding electrode.

10. The corrosion-resistant tower grounding device of claim 9, wherein, The vertical grounding electrode and the aluminum-copper-rare earth alloy horizontal grounding electrode are both externally provided with a resistance-reducing layer.

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