JP7330529B2 - Lightning suppression type lightning arrester and lightning suppression type arrester - Google Patents

Description

The present invention relates to a lightning-suppressing lightning arrester and a lightning-suppressing lightning arrester that suppress the occurrence of lightning strikes and protect an object to be protected from lightning strikes.

A lightning strike is an electrical discharge phenomenon that occurs in the atmosphere, and lightning electrical discharges include intra-cloud electrical discharge, inter-cloud electrical discharge, cloud-earth electrical discharge, and the like. Cloud-to-earth discharge (hereafter referred to as lightning strike) causes great damage in lightning discharge. A lightning strike occurs when the electric field strength between the thundercloud (cloud base) and the earth or a structure built on the earth as a protected object becomes extremely large, and the electric charge becomes saturated and breaks down the insulation of the atmosphere. This is a phenomenon that occurs in

A detailed observation of the phenomenon of lightning strikes reveals that, in the case of general lightning strikes that occur in the summer (summer lightning), as shown in Fig. 7, when thundercloud C matures, its cloud base becomes negatively charged, and as a result, The aerosol Z of is also negatively charged, and the ground E and the building B are positively charged.

When such a charge distribution is formed, the step leader S extends from the thundercloud C toward the ground E in a place where the resistance of the atmosphere is relatively small.
When the step leader S reaches a certain distance from the ground, an upward streamer T (welcoming discharge) of weak current extends from the ground E toward the step leader S. As a result, a large current (return current) flows between the thundercloud C and the ground E, resulting in a lightning strike.

The upper part of the structure B constructed on the ground E is close to the thundercloud C, and the resistance between the cloud base of this thundercloud C and the upper part of the structure B is Since it is smaller than the resistance, a lightning strike to the building B is likely to occur.

When lightning strikes the building B in this way, it causes a fire in the building B and damages to electronic equipment installed in the building B.

Therefore, conventionally, a lightning rod (Franklin rod) R electrically connected to the ground E by a grounding wire D is installed on the upper part of the building B, and the lightning rod is guided to the lightning rod R, and the current is transferred to the grounding wire. It is done to prevent this current from flowing in the building B by directing it to earth E by D.

As a result, troubles such as a fire in the building B and damage to electronic equipment installed in the building B are prevented.

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The conventional technology described above is based on the premise that an object to be protected from lightning strikes is prevented from being damaged by the energy of the lightning strikes, but since the lightning strikes themselves occur, the effect is not small. There are still problems that should be improved.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems remaining in the prior art described above, and aims to eliminate as much as possible the various problems that lightning strikes may cause to the object to be protected by suppressing the occurrence of lightning strikes. Make it a problem to be solved.

A lightning-suppressing lightning arrester according to the present invention is a lightning-suppressing lightning arrester that is provided on an object to be protected from a lightning strike to suppress lightning strikes on the object to be protected. A post erected on the upper part of the body, and a charge neutralizing member attached in a state of being electrically connected to the upper end of the post, the post being grounded, and the charge neutralizing member It is characterized in that it is formed in a cylindrical shape having an opening at the bottom and is configured to take in the aerosol floating in the air through this opening.

In the lightning-suppressing lightning arrester of the present invention constructed as described above, when a thundercloud approaches the object to be protected, the negative charges distributed at the bottom of the thundercloud cause the aerosols in the gas between the thundercloud and the ground to be released. charged with a negative charge.

When the aerosol in the gas is negatively charged, the ground is positively charged correspondingly, and furthermore, a post erected on the upper part of the object to be protected on the ground and grounded and the charge neutralizing member are also charged with a positive charge.

Here, since the charge neutralization member is provided with an opening in the upper portion thereof, the aerosol in the air is taken into the charge neutralization member through the opening.

The aerosol taken into the charge-neutralizing member in this way contacts the inner wall of the charge-neutralizing member. The negative charge and the positive charge on the charge neutralizing member combine to render the charge neutralizing member electrically neutral.

As a result, an electrically neutral region is formed around the charge-neutralizing member installed close to the thundercloud, suppressing the generation of streamers from the charge-neutralizing member toward the thundercloud. The lightning strike to the object to be protected on which the charge neutralizing member is installed is suppressed.

It is preferable to form a through-hole for communication between the inside and the outside of the charge neutralization member in the lower portion of the charge neutralization member.

With such a configuration, the aerosol taken into the charge neutralizing member is discharged to the outside through the through-hole.

Therefore, the negatively charged aerosol is continuously taken into the charge-neutralizing member, and the charge-neutralizing member is stably neutralized.

According to the lightning-suppressing lightning arrester of the present invention, when a thundercloud approaches an object to be protected, the charge-neutralizing member installed on the object to be protected so as to approach the thundercloud becomes electrically neutral, and the charge is neutralized. A lightning strike can be suppressed by suppressing streamers from being generated from the neutralizing member.
Further, by preconfiguring the lightning-suppressing lightning arrester with the strut attached to the charge-neutralizing member, it is possible to easily incorporate the lightning-suppressing lightning arrester into an existing object to be protected.

It is a front view showing one embodiment of the present invention. Fig. 2 is an enlarged front view of a charge neutralizing member, showing one embodiment of the present invention; FIG. 4 is an enlarged plan view of a charge neutralizing member, illustrating one embodiment of the present invention; 1 is an enlarged vertical cross-sectional view of a charge neutralizing member, showing one embodiment of the present invention; FIG. 1 is an enlarged vertical cross-sectional view of a charge neutralizing member, showing one embodiment of the present invention; FIG. FIG. 4 is an enlarged vertical cross-sectional view of a charge neutralizing member, showing another embodiment of the present invention; FIG. 2 is a schematic diagram for explaining a lightning strike generation mechanism;

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. FIG.
In the following description, the same reference numerals are used for the same parts as in FIG. 7 to simplify the description.

In FIG. 1, reference numeral 1 denotes an object to be protected consisting of a building on the ground E. A support 2 is erected at the top of the structure, and a charge neutralizing member 3 is attached to the upper end of the support 2. A neutralizing member 3 is installed on the ground E via a ground wire 4. - 特許庁

The charge neutralizing member 3 is formed in the shape of a bottomed cylinder with an opening 3a formed on the upper side, and a fastening hole 3b through which the support pillar 2 is passed is formed in the center of the bottom.

A screw portion 2a is formed at the upper end portion of the post 2, and the screw portion 2a is fitted into the fastening hole 3b of the charge neutralizing member 3 and holds the bottom portion of the charge neutralizing member 3 therebetween. A fixing nut 5 is screwed on.

In the lightning suppression type lightning arrester of the present invention constructed in this manner, as shown in FIG. The aerosol Z in the gas between and the ground E is also negatively charged.

Further, the ground E is positively charged by the action of the capacitor between the thundercloud C and the ground E, and the post 2 and the charge neutralizing member 3 grounded to the ground E are also positively charged.

On the other hand, since the opening 3a is provided in the upper portion of the charge neutralizing member 3, the aerosol Z in the air is taken into the charge neutralizing member 3 through the opening 3a.

The aerosol Z thus taken into the charge neutralization member 3 contacts the inner wall of the charge neutralization member 3. Since the aerosol Z is negatively charged, the aerosol Z and the charge neutralization member 3 are separated from each other. , the negative charge of the aerosol Z and the positive charge of the charge-neutralizing member 3 combine to render the charge-neutralizing member 3 electrically neutral, as shown in FIG.

This suppresses the generation of streamers T from the charge neutralizing member 3 toward the thundercloud C, and accordingly suppresses lightning strikes on the charge neutralizing member 3 .
As a result, the protected object 1 on which the charge neutralizing member 3 is installed can be protected from lightning strikes.

It should be noted that the various shapes, dimensions, and the like of the constituent members shown in the above embodiment are merely examples, and can be changed in various ways according to, for example, the object to be protected that is applied.

For example, in the above-described embodiment, the charge neutralizing member 3 is formed in a tubular shape with a bottom, but it may be formed in a tubular shape without a bottom.
However, when the charge neutralizing member 3 is formed into a cylindrical shape with a bottom, the movement of the aerosol Z taken into the interior thereof is slowed down, and the contact between the aerosol Z and the inner wall of the charge neutralizing member 3 is made more effective. There is an advantage that the neutralization of the charge neutralizing member 3 can be improved by the above.

Further, as shown in FIG. 6, a through-hole 6 may be formed in the lower portion of the charge neutralizing member 3 to allow the inside and outside of the charge neutralizing member 3 to communicate with each other.

With such a configuration, rainwater or the like that enters the charge neutralizing member 3 can be drained through the through holes 6 .

Also, the aerosol Z taken into the charge neutralizing member 3 can be discharged to the outside through the through hole 6 .
As a result, the aerosol Z used for charge neutralization in the charge neutralization member 3 is discharged, and the new negatively charged aerosol Z is continuously sent to the charge neutralization member 3, thereby neutralizing the charge. The member 3 can be stably neutralized.

Furthermore, as shown in FIG. 6, it is also possible to electrically connect the front and back surfaces of the charge neutralizing member 3 with a conductive member 7 .

With such a configuration, the movement of electrons in the charge neutralizing member 3 can be made smooth, and the neutralization efficiency of the charge neutralizing member 3 can be enhanced.

Furthermore, the charge neutralizing member 3 and the strut 2 can be unitized to form a lightning strike suppressing lightning arrester in advance.
Such unitization makes it possible to easily handle the construction of an existing object to be protected as a lightning strike suppressing type lightning arrester.

1 Object to be protected 2 Post 3 Charge neutralizing member 3a Opening 3b Fixing hole 4 Grounding wire 5 Fixing nut 6 Through hole 7 Conductive member B Structure C Thundercloud D Grounding wire E Ground R Lightning rod S Step reader T Streamer Z Aerosol

Claims (4)

A lightning-suppressing lightning arrester provided on an object to be protected from lightning strikes to suppress lightning strikes to the object, comprising: a post erected on top of the object to be protected and a charge neutralizing member attached in an electrically connected state to the upper end of the support, the support being grounded, and the charge neutralizing member being formed in a cylindrical shape having an opening at the top. The aerosol floating in the atmosphere is taken in from this opening ,
A lightning suppression type lightning arrester, wherein a through hole is formed in a lower portion of the charge neutralization member for communicating the inside and the outside of the charge neutralization member . 2. A lightning suppression type lightning arrester according to claim 1, wherein said charge neutralizing member is formed in a bottomed cylindrical shape having an upper opening. A post that serves as an attachment member to the object to be protected, and a cylindrical charge neutralizing member that is electrically connected to the upper part of the post ,
A lightning-suppressing lightning arrester, wherein a through hole is formed in the lower part of the charge neutralizing member for communicating the inside and the outside of the charge neutralizing member . 4. A lightning suppressing lightning arrester according to claim 3, wherein said charge neutralizing member is formed in the shape of a bottomed cylinder having an upper opening.