Pole tower with lightning stroke resistant structure

Abstract

The utility model discloses a pole tower with a lightning stroke resistant structure, which relates to the technical field of pole towers, and comprises a tower body, side guide frames are symmetrically arranged on two sides of the tower body, a lightning protection mechanism is arranged right above the tower body, and the lightning protection mechanism disperses destructive power generated by lightning stroke. The tower body is provided with the lightning protection mechanism, the lightning protection mechanism is arranged at the bottom end of the tower body, the lightning protection mechanism is grounded through an underground conductor and forms a grounding grid in a certain mode, and the lightning protection mechanism is further prevented from directly damaging the tower body and the ceramic terminals. The lightning arrester is adopted in the line and is connected in series and in parallel with the line insulator, the shielding failure and counterattack lightning resistance level of the line at the installation position is improved, the insulator can be protected to a certain degree, the insulator is prevented from being struck by lightning, the ceramic terminal is connected in series with the lightning arrester, electrical equipment is protected from being damaged by high transient overvoltage during lightning stroke, and the lightning protection effect is good. And the follow current time is limited.

Description

Technical Field

[0001] The utility model relates to the technical field of pole towers, in particular to a pole tower with a lightning strike resistant structure. Background Art

[0002] Power poles and towers refer to equipment responsible for long-distance bearing of wires and cables during power transmission. They are generally divided into two types: metal and non-metal. Commonly used metal poles and towers are generally iron towers. The iron tower itself is composed of steel components connected by bolts. It has a high bearing capacity and good lightning grounding conductivity.

[0003] Currently, many of the power plant's overhead lines are located in the harsh environment of the mountains. The lines use bare conductors and there are multiple conductor joints in the middle. Due to the long operation time, some joints are broken, which poses a risk of electric shock. One section of the overhead line is on the mountain and is often struck by lightning and tripped during the thunderstorm season. It is easy to cause short circuits and tripping on windy and rainy days. Summary of the invention

[0004] The utility model aims to provide a pole tower with a lightning strike resistant structure to solve the above-mentioned defects caused by the prior art.

[0005] A pole tower with a lightning-resistant structure comprises a tower body, side guide frames are symmetrically arranged on both sides of the tower body, a lightning protection mechanism is arranged directly above the tower body, the lightning protection mechanism disperses the destructive force generated by the lightning strike to avoid damage to the insulator caused by excessive overvoltage directly caused by the lightning strike, and a discharge mechanism is arranged at the bottom of the tower body. The discharge mechanism is grounded through an underground conductor and forms a grounding network in a certain way, thereby avoiding damage to the tower body and ceramic terminals caused by direct lightning strikes.

[0006] Preferably, the lightning protection mechanism includes an instrument tray, a lightning arrester, an epoxy rod, a lightning rod and a copper clamp. Epoxy rods are arranged at equal intervals on the outside of the instrument tray, the outside of the epoxy rods is connected to the lightning arrester, a lightning rod is connected through the middle of the instrument tray, and a copper clamp is welded to the bottom end of the lightning rod.

[0007] Preferably, the lightning rod is connected to the top of the grounding wire through a copper clamp welded at the bottom.

[0008] Preferably, the discharge mechanism includes a grounding wire, a discharge plate, a slide groove, a side clamping arm and a guide slider, the tail end of the grounding wire is connected to the discharge plate, slide grooves are provided on both sides of the discharge plate, guide sliders are provided on both sides of the slide groove, and the bottom end of the guide slider is connected to the side clamping arm.

[0009] Preferably, the side clamping arm is connected to the outer side of the slide groove through a guide slider arranged at the top end.

[0010] Preferably, the instrument support plate is connected to the outer side of the tower body through a rectangular through-connected insulating rubber rod.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. Use lightning arresters in the line and connect them in series and in parallel with the line insulators to improve the level of lightning protection and lightning strike resistance of the line at the installation location, and provide a certain degree of protection for the insulators so that they do not have to be struck by lightning. Connect the lightning arresters in series with the ceramic terminals to protect the electrical equipment from the hazards of high transient overvoltage during lightning strikes, and limit the follow-on time to avoid damage to the ceramic terminals caused by lightning strikes.

[0013] 2. Reduce the impact grounding resistance of the tower to improve the lightning strike resistance level of the transmission line. Reduce the grounding resistance of the tower. When the tower top is struck by lightning, the degree of increase in the potential at the tower top will decrease, and the overvoltage level borne by the insulator will also decrease, thereby improving the lightning strike resistance level of the line and effectively reducing the lightning tripping rate of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the tower body structure viewed from above in the utility model.

[0016] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure at point A.

[0017] Figure 4 It is a side view structural schematic diagram of the discharge plate in the utility model.

[0018] in:

[0019] 1. Tower body; 2. Side guide frame; 3. Instrument support plate; 4. Lightning arrester; 5. Epoxy rod; 6. Lightning protection mechanism; 7. Lightning rod; 8. Grounding wire; 9. Discharge plate; 10. Discharge mechanism; 11. Insulating rubber rod; 12. Slide; 13. Side clamping arm; 14. Guide slide; 15. Copper clamp. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figures 1 to 4As shown, a pole tower with a lightning-resistant structure includes a tower body 1, side guide frames 2 are symmetrically arranged on both sides of the tower body 1, a lightning protection mechanism 6 is arranged directly above the tower body 1, the lightning protection mechanism 6 disperses the destructive force generated by the lightning strike to prevent the insulator from being damaged by excessive overvoltage directly caused by the lightning strike, and a discharge mechanism 10 is arranged at the bottom end of the tower body 1. The discharge mechanism 10 is grounded through an underground conductor and forms a grounding network in a certain way, thereby preventing the tower body 1 and the ceramic terminal from being damaged directly by the lightning strike.

[0022] In this embodiment, the lightning protection mechanism 6 includes an instrument tray 3, a lightning arrester 4, an epoxy rod 5, a lightning rod 7 and a copper clamp 15. Epoxy rods 5 are arranged at equal intervals on the outside of the instrument tray 3, and the outside of the epoxy rods 5 is connected to the lightning arrester 4. A lightning rod 7 is connected through the middle of the instrument tray 3, and a copper clamp 15 is welded to the bottom end of the lightning rod 7. The ceramic terminals are protected in series by the lightning arrester 4 to prevent excessive current from damaging the ceramic terminals.

[0023] In this embodiment, the lightning rod 7 is connected to the top of the grounding wire 8 through a copper clamp 15 welded at the bottom, and the top of the grounding wire 8 is wound around the copper clamp 15 to transmit and conduct the lightning current.

[0024] In this embodiment, the discharge mechanism 10 includes a grounding wire 8, a discharge plate 9, a slide groove 12, a side clamping arm 13 and a guide slider 14. The tail end of the grounding wire 8 is connected to the discharge plate 9, and slide grooves 12 are provided on both sides of the discharge plate 9. Guide sliders 14 are provided on both sides of the slide groove 12. The bottom end of the guide slider 14 is connected to the side clamping arm 13. The current is discharged through the discharge plate 9 through the grounding wire 8 to reduce the damage to the pole tower caused by lightning strikes.

[0025] In this embodiment, the side clamping arm 13 is connected to the outer side of the slide groove 12 through the guide slider 14 arranged at the top, and the discharge plate 9 is clamped by the side clamping arm 13 to prevent the discharge plate 9 from displacement.

[0026] In this embodiment, the instrument support plate 3 is connected to the outer side of the tower body 1 through a rectangular through-connected insulating rubber rod 11, and the instrument support plate 3 is positioned by the insulating rubber rod 11 to avoid damage to the connection of the instrument support plate 3 due to excessive voltage.

[0027] The actual application of this kind of tower with lightning-resistant structure includes the following work contents:

[0028] Step 1: The construction workers directly place the tower body 1 on the flat ground on the side of the mountain, and dig a groove of a certain depth according to the depth of the land, build a rectangular concrete block inside the groove, and pull the guide slider 14, slide the guide slider 14 and the side clamping arm 13 horizontally, adjust the spacing of the four sets of side clamping arms 13, clamp the two sides of the concrete block by the side clamping arm 13, and then slide the guide slider 14 and the slide groove 12 horizontally by bolts.

[0029] Step 2: At the same time, ceramic terminals and coupled ground wires are installed on the outer side of the side guide frame 2. The direct coupling effect between the conductor and the ground wire generates a higher induced voltage on the conductor when lightning strikes the top of the tower, thereby reducing the impact voltage borne by the insulator string. The ceramic terminal is connected in series with the epoxy rod 5 to guide the current after the lightning strike into the interior of the lightning arrester 4, and the high-voltage impact current is directed to the ground, thereby limiting the voltage amplitude and protecting the insulation of the communication cables and equipment.

[0030] Step 3: When the force of the lightning strike is too large, the current is guided by the lightning rod 7 set at the top, and the current is transmitted by the copper clamp 15 set at the bottom, so that the high-voltage current generated by the lightning strike is directly transmitted to the surface of the grounding wire 8, and then the current is directly introduced into the surface of the discharge plate 9, and the current is released into the natural environment through the discharge plate 9. At the same time, the insulating rubber rod 11 positions the instrument tray 3 around to prevent the instrument tray 3 from being installed on the outside of the tower body 1 and the current from damaging the connection between the instrument tray 3 and the tower body 1.

[0031] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A tower with a lightning-resistant structure, characterized in that: The tower body (1) comprises a tower body (1), side guide frames (2) are symmetrically arranged on both sides of the tower body (1), a lightning protection mechanism (6) is arranged directly above the tower body (1), the lightning protection mechanism (6) disperses the destructive force generated by lightning strikes to prevent the insulators from being damaged by excessive overvoltage directly caused by lightning strikes, and a discharge mechanism (10) is arranged at the bottom end of the tower body (1), the discharge mechanism (10) is grounded through an underground conductor, and a grounding network is formed in a certain manner, thereby preventing the tower body (1) and ceramic terminals from being damaged directly by lightning strikes.

2. The tower with a lightning strike resistant structure according to claim 1, characterized in that: The lightning protection mechanism (6) comprises an instrument support plate (3), a lightning arrester (4), an epoxy rod (5), a lightning rod (7) and a copper clamp (15); the epoxy rods (5) are arranged at equal intervals on the outer side of the instrument support plate (3); the outer side of the epoxy rods (5) is connected to the lightning arrester (4); the middle part of the instrument support plate (3) is penetrated by a lightning rod (7); and the bottom end of the lightning rod (7) is welded with a copper clamp (15).

3. The tower with a lightning strike resistant structure according to claim 2, characterized in that: The lightning rod (7) is connected to the top end of the grounding wire (8) via a copper clamp (15) welded at the bottom end.

4. The tower with a lightning strike resistant structure according to claim 1, characterized in that: The discharge mechanism (10) comprises a grounding wire (8), a discharge plate (9), a slide groove (12), a side clamping arm (13) and a guide slider (14); the tail end of the grounding wire (8) is connected to the discharge plate (9); slide grooves (12) are provided on both sides of the discharge plate (9); guide sliders (14) are provided on both sides of the slide groove (12); and the bottom end of the guide slider (14) is connected to the side clamping arm (13).

5. The tower with a lightning strike resistant structure according to claim 4, characterized in that: The side clamping arm (13) is connected to the outer side of the slide groove (12) via a guide slider (14) arranged at the top end.

6. The tower with a lightning strike resistant structure according to claim 2, characterized in that: The instrument support plate (3) is connected to the outer side of the tower body (1) via a rectangular through-connected insulating rubber rod (11).

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