CN210866777U - Lightning arrester for electric power iron tower - Google Patents

Abstract

A lightning protection device for an electric power iron tower comprises an insulation board horizontally arranged at the top of the iron tower, wherein the insulation board is provided with a shell and a current conducting plate positioned in the shell, a support column is vertically welded on the upper surface of the current conducting plate, a fixing platform which is thin in the upper part and thick in the lower part and is conical in shape is arranged at the upper end of the support column, a main lightning rod is arranged at the upper end of the fixing platform along the vertical direction, a main metal ball is arranged on the main lightning rod, a through hole is formed in the lower side part of the shell, the current conducting plate is connected with; at least two auxiliary arresters are arranged on the shell, and the height of each auxiliary arrester is lower than that of the main lightning rod. The utility model discloses after the condition of main lightning rod fracture takes place, supplementary lightning rod can play reserve effect, can't meet the sudden strain of a muscle after avoiding main lightning rod fracture, leads to the electricity tower to suffer the thunderbolt damage, improves reserve protective effect; and the stress caused by wind power is properly counteracted, and the occurrence of sudden main lightning rod breakage caused by the stress is greatly reduced.

Description

Lightning protection device for power tower

technical field

The utility model belongs to the technical field of power transmission, in particular to a lightning protection device for a power iron tower.

Background technique

In the existing power transmission field, electrical towers are important facilities in the power sector, and towers that are too high are prone to lightning strikes in thunderstorms, so lightning rods are generally installed on top of the towers for protection, and the existing lightning protection devices In the process of use, as time goes by, it is inevitable to encounter bad weather, which will cause the top of the lightning rod to be broken and damaged, which will make the lightning protection effect invalid. Therefore, there is a need for a lightning protection device that can assist in improving wind resistance and can be used as an auxiliary replacement when the lightning rod is accidentally broken.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a lightning protection device for a power iron tower, which has good wind resistance and has the function of assisting and replacing lightning protection after the lightning rod is broken.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a lightning protection device for a power iron tower, comprising an insulating plate horizontally arranged on the top of the iron tower, the insulating plate is provided with a casing and a conductive plate located inside the casing, and the surface of the conductive plate is vertical A support column is welded, the upper end of the support column is provided with a conical fixing platform, the upper end of the fixing platform is provided with a main lightning rod along the vertical direction, the main lightning rod is provided with a main metal ball, and the lower side of the shell is provided with perforations to conduct electricity. The board is connected with a grounding lead passing through a hole, and the outer end of the grounding lead is connected with a main lightning rod; at least two auxiliary lightning arresters are arranged on the shell, and the height of the auxiliary lightning arrester is lower than that of the main lightning rod.

There are four auxiliary lightning arresters. The four auxiliary lightning arresters have the same structure and are evenly arranged along the circumferential direction of the casing; the outer shape of the outer casing is a circular truncated structure with both open upper and lower ends, and each auxiliary lightning arrester includes an auxiliary lightning rod arranged in the vertical direction. , the auxiliary lightning rod passes through the shell, the lower end of the auxiliary lightning rod protrudes into the shell and is connected to the surface of the conductive plate, the upper end of the auxiliary lightning rod is higher than the top of the shell and lower than the upper end of the fixing table, and the auxiliary lightning rod is provided on the outside of the shell. The auxiliary metal ball is provided with a support positioning frame for supporting the positioning auxiliary lightning rod on the inner wall of the casing.

The diameter of the support column is smaller than the diameter of the lower end face of the fixed platform. The lower end surface of the fixed platform is provided with a connecting sleeve which is sleeved outside the supporting column. Needle.

The outer circumference of the lower part of the fixed platform is connected with a swivel ring through the rotation of the bearing, the upper part and the lower part of the bearing are provided with sealing rings, and several fan blade plates are evenly arranged on the swivel ring along the circumferential direction.

The lower edge of the casing is bent inward and is fixedly connected to the insulating plate through the first countersunk head screw, and the conductive plate is fixedly connected to the insulating plate through the second countersunk head screw.

The insulating plate is provided with water permeable holes that are transparent up and down on the outer side of the outer circumference of the conductive plate.

Adopting the above-mentioned technical scheme, compared with the prior art, the beneficial effects of the present utility model are:

1) In the normal working state of the utility model, since the height of the main lightning rod is higher than that of the auxiliary lightning arrester, the main lightning rod plays the role of injecting medicine and lightning protection, and the current is introduced through the fixed table, the support column, the conductive plate, the grounding lead and the main lightning rod. Underground, complete the lightning protection effect. Four auxiliary lightning rods are set up. In daily life, the auxiliary lightning rod can realize the role of the auxiliary lightning rod, and cooperate with the auxiliary lightning rod to dissipate the current into the atmosphere. After the main lightning rod breaks, the auxiliary lightning rod can play a backup effect. Avoid the failure of the main lightning rod to be connected to the lightning after the breakage, resulting in lightning damage to the tower, and improve the backup protection effect;

2) In this utility model, a rotatable fan blade is installed on the outer ring of the fixed table. When encountering strong windy weather, the fan blade can be continuously rotated and rubbed on the outer wall of the fixed table. The stress caused by wind is properly offset, which effectively reduces the occurrence of sudden main lightning rod breakage caused by stress.

3) Connect the shell and the conductive plate from bottom to top through countersunk screws on the insulating plate, which is convenient for split installation on the iron tower.

4) When it rains, the rainwater enters the shell and can be discharged through the permeable holes.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model;

FIG. 2 is an axial cross-sectional view of the housing and the insulating plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation , are constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

As shown in Figures 1 and 2, a lightning protection device for a power iron tower of the present invention includes an insulating plate 2 horizontally arranged on the top of the iron tower 1, and the insulating plate 2 is provided with a casing 3 and a conductive plate 6 inside the casing 3, The upper surface of the conductive plate 6 is vertically welded with a support column 7. The upper end of the support column 7 is provided with a conical fixing table 8 with a thin upper and a lower thickness. The upper end of the fixing table 8 is provided with a main lightning rod 9 along the vertical direction. The metal ball 10 has a perforation on the lower side of the casing 3, the grounding lead 16 through the perforation is connected to the conductive plate 6, and the outer end of the grounding lead 16 is connected with a main lightning rod 17; the casing 3 is provided with at least two auxiliary lightning arresters, The height of the auxiliary lightning arrester is lower than that of the main lightning rod 9 .

There are four auxiliary arresters. The four auxiliary arresters have the same structure and are evenly arranged along the circumferential direction of the casing 3; Auxiliary lightning rod 4, the auxiliary lightning rod 4 passes through the shell 3, the lower end of the auxiliary lightning rod 4 extends into the shell 3 and is connected to the upper surface of the conductive plate 6, the upper end of the auxiliary lightning rod 4 is higher than the top of the shell 3 and lower than the fixing table 8 The upper end of the auxiliary lightning rod 4 is provided with an auxiliary metal ball 5 located outside the casing 3 , and the inner wall of the casing 3 is provided with a support and positioning frame 18 for supporting and positioning the auxiliary lightning rod 4 .

The diameter of the support column 7 is smaller than the diameter of the lower end surface of the fixing table 8, the lower end surface of the fixing table 8 is provided with a connecting sleeve 11 sleeved on the outside of the supporting column 7, the lower end of the connecting sleeve 11 is horizontally provided with a dividing plate 12, and the lower surface of the dividing plate 12 is fixedly connected There is an auxiliary lightning rod 13 facing down vertically.

The outer circumference of the lower part of the fixed table 8 is rotatably connected with a swivel 19 through a bearing 14. The upper and lower parts of the bearing 14 are provided with sealing rings, and several fan blades 15 are evenly arranged on the swivel 19 along the circumferential direction.

The lower edge of the casing 3 is bent inward and is fixedly connected to the insulating plate 2 through the first countersunk head screw 20 , and the conductive plate 6 is fixedly connected to the insulating plate 2 through the second countersunk head screw 21 .

The insulating plate 2 is provided with a water permeable hole 22 that penetrates up and down on the outer side of the outer circumference of the conductive plate 6 .

The casing 3 is generally made of insulating material. If the casing 3 is made of a conductor material, an insulating film is bonded on the outer wall of the casing 3 .

When the utility model is working and used, when it is subjected to strong wind, the strong wind exerts a force on the windward inclined surface larger than the fan blade 15, and the fan blade 15 and the swivel 19 are driven to rotate around the fixed table 8 through the bearing 14, so that the main lightning rod 9 is rotated. The wind force received in the bearing 14 is rotated and offset by the inner and outer rings of the bearing 14, which avoids the accidental rupture of the main lightning rod 9 due to stress, and by providing four auxiliary lightning rods 4, after the main lightning rod 9 breaks, it serves as a backup lightning guide It can reduce the chance of encountering lightning strikes, improve the protection effect, and assist the lightning rod 4 to cooperate with the auxiliary lightning rod 13 to emit current in the atmosphere during daily use.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and does not deviate from the present invention. The present invention can be realized in other specific forms without the spirit or basic characteristics of The scope of the present invention is defined by the appended claims rather than the above description, and therefore all changes that come within the meaning and scope of equivalency of the claims are intended to be embraced within the present invention, and any reference signs in the claims shall not be included deemed to limit the claims involved.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. a lightning arrester for a power iron tower, it is characterized in that: comprise the insulating plate that is arranged on the top of the iron tower horizontally, the insulating plate is provided with the outer casing and the conductive plate positioned in the outer casing, the upper surface of the conductive plate is vertically welded with a support column, the upper end of the support column There is a conical fixing table with a thin upper and a thick lower. The upper end of the fixing table is provided with a main lightning rod along the vertical direction. The main lightning rod is provided with a main metal ball. , the outer end of the ground lead is connected with the main lightning rod; at least two auxiliary lightning arresters are arranged on the shell, and the height of the auxiliary lightning arrester is lower than the main lightning rod. 2. The lightning arrester for a power iron tower according to claim 1, characterized in that: four auxiliary arresters are provided, and the four auxiliary arresters have the same structure and are evenly arranged along the circumferential direction of the casing; The circular truncated structure with all openings, each auxiliary lightning arrester includes an auxiliary lightning rod arranged in the vertical direction, the auxiliary lightning rod passes through the shell, the lower end of the auxiliary lightning rod extends into the shell and is connected to the surface of the conductive plate, and the upper end of the auxiliary lightning rod is high Above the top of the casing and below the upper end of the fixing table, the auxiliary lightning rod is provided with an auxiliary metal ball outside the casing, and the inner wall of the casing is provided with a support and positioning frame for supporting and positioning the auxiliary lightning rod. 3. The lightning protection device for a power iron tower according to claim 1, wherein the diameter of the support column is smaller than the diameter of the lower end face of the fixed platform, and the lower end surface of the fixed platform is provided with a connecting sleeve sleeved on the outside of the supporting column, and the connecting sleeve A shunt plate is horizontally arranged at the lower end, and a vertical downward auxiliary lightning rod is fixedly connected to the lower surface of the shunt plate. 4. A lightning protection device for a power iron tower according to claim 1, characterized in that: the outer circumference of the lower part of the fixed platform is rotatably connected with a swivel ring, the upper part and the lower part of the bearing are provided with sealing rings, and the swivel ring is evenly distributed along the circumferential direction. Several fan blade boards are provided, and the fan blade board is provided with a windward inclined surface protruding upward from the casing. 5. A lightning protection device for a power iron tower according to claim 1, wherein the lower edge of the casing is bent inward and is fixedly connected to the insulating plate through the first countersunk head screw, and the conductive plate is connected to the insulating plate through the second countersunk head screw. Insulation plate fixed connection. 6 . The lightning protection device for a power iron tower according to claim 1 , wherein the insulating plate is provided with water permeable holes that are transparent up and down on the outer side of the outer circumference of the conductive plate. 7 .

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