JP6664713B1 - Conversion device for converting a pin-type lightning arrester to a lightning strike suppression type lightning arrester and a jig for mounting the conversion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the installation work of a lightning strike suppression type lightning arrester and to reduce the installation cost by converting an existing sting type lightning arrester into a lightning strike suppression type lightning arrester. Kind Code: A1 A conversion device (1) for converting a stylus type lightning arrester (3) into a lightning strike suppression type lightning arrester (4), wherein the lightning strike suppression type lightning arrester is provided with a first electrode (5) formed of a conductive material, and a first electrode (5). A second electrode 7 arranged below the electrode with an electrical insulator 6 sandwiched between the second electrode 7 and a grounding means for grounding the second electrode to the ground. Is characterized in that a connecting portion J to be connected in a conductive state is provided at the tip portion of the. [Selection diagram] FIG.

Description

  TECHNICAL FIELD The present invention relates to a converter for converting a pin-type lightning arrester into a lightning strike suppression type lightning arrester.

  Lightning is a discharge phenomenon that occurs in the atmosphere. Lightning discharges include intra-cloud discharge, inter-cloud discharge, and cloud-to-ground discharge. The major damage caused by lightning discharge is cloud-to-ground discharge (hereinafter called lightning). A lightning strike is a phenomenon that occurs when the electric field strength between a thundercloud (cloud bottom) and the ground or a structure built on the ground becomes extremely large, and its electric charge becomes saturated, destroying the insulation of the atmosphere. is there.

A close look at the phenomenon of lightning strikes shows that in the case of general lightning strikes in summer (summer lightning strikes), as the thundercloud matures, the thundercloud approaches the ground while choosing a place where the atmosphere discharges easily from the thundercloud.
When the step leader reaches a certain distance from the ground, a weak stream of upward streamer (welcome discharge) extends from the ground, a building (lightning rod), a tree, or the like toward the step leader.
When the streamer and the step leader combine, a large current (feedback current) flows between the thundercloud and the ground through the path.
This is the phenomenon of lightning.

  In view of the fact that lightning can not be prevented by the conventional concept of lightning protection, a lightning rod (Franklin rod) is installed to attract lightning to one point of the lightning rod. (See Patent Document 1).

  On the other hand, the present inventors have proposed a lightning strike suppression type lightning arrester disclosed in Patent Document 2 in order to protect a protected body by minimizing the occurrence of lightning strikes.

  This lightning strike suppression type lightning arrester has a first electrode and a second electrode arranged with an insulator interposed therebetween, and is configured by grounding only the second electrode.

  Then, for example, when a thundercloud in which a negative charge is distributed on the cloud bottom approaches, an opposite charge (positive charge) is distributed on the surface of the ground, and a positive charge is collected also on the grounded second electrode.

  Then, the first electrode disposed via the insulator takes a negative charge due to the action of the capacitor.

  By this operation, the occurrence of upward streamers in and around the lightning arrester is suppressed, and the occurrence of lightning is suppressed.

JP 2012-80018 A Japanese Patent No. 5839331

  The lightning strike suppression type lightning arrester suppresses lightning, and is superior to the above-mentioned rod type lightning rod in protecting a protected body from lightning strike. Requested.

  By the way, when replacing the pin-type lightning arrester with the lightning strike suppression type lightning arrester, a new support structure such as a support is provided above the protected object, and the lightning strike suppression type lightning arrester is provided above the support structure. Need to be installed.

  As a result, there is a problem that when replacing the lightning arrester with the lightning strike suppression type, a new installation work of the support structure is required, and the installation cost is increased.

  The present invention has been made in view of the above-described problems, and aims to simplify the installation work and reduce the installation cost by converting an existing pin-type lightning arrester to a lightning strike suppression type lightning arrester. Is a problem to be solved.

  The lightning protection device according to the present invention includes a first electrode formed of a conductive material, and an electrical insulator disposed below the first electrode. And a grounding means for grounding the second electrode to the ground, and a connecting part electrically connected to the tip of the bar of the bar-type lightning arrester. Is provided.

  With such a configuration, by electrically connecting the connecting portion to the tip of the pin, the second electrode is grounded via the pin of the pin type lightning arrester, and the second electrode of this pin type lightning arrester is A lightning strike suppression type lightning rod can be configured at the tip.

  Thus, the tip type lightning arrester can be used as a support structure for the lightning arrester suppressing type lightning arrester, and can be used as a grounding means for grounding the second electrode of the lightning strike suppressing type lightning arrester to the ground.

  Therefore, a new support structure for installing the lightning strike suppression type lightning arrester is not required, so that the installation work can be simplified and the installation cost can be reduced.

  The connecting portion may be constituted by a connecting cylinder which is provided continuously below the electric insulator, is fitted to the protruding needle from its tip, and is electrically connected to the protruding needle.

With such a configuration, the connection tube can be used as the second electrode and as a connection member with the barb.
Thereby, the connection member between the second electrode and the protruding needle can be configured by one member, and the structure can be simplified.

  The connection portion may include a connection tube fitted on the protruding needle from a tip thereof, and the connection tube may be configured to be connected to a stay continuously provided below the second electrode.

With such a configuration, the stay can be integrated with the connecting cylinder without changing the structure of the lightning strike suppression type lightning arrester.
Then, by fitting the connection cylinder to the protruding needle, the lightning strike suppression type lightning arrester can be installed at the tip of the protruding needle.

  As a result, it is possible to install an existing lightning strike suppression type lightning arrester with a minimum number of parts added and processed.

  A configuration may be adopted in which a support member is provided inside the connection tube, which is pressed against the outer periphery of the protruding needle inserted into the connection tube and restrains relative movement between the connection tube and the protruding needle. .

  With this support member, unnecessary movement of the connection tube, that is, the lightning strike suppression type lightning arrester can be suppressed, and detachment from the barb can be prevented.

It is preferable that the support member is formed of a conductive resin.
With such a configuration, electrical connection between the connection cylinder and the protruding needle can be performed via the support member.

The connecting portion may be detachably attached to the protruding needle.
With such a configuration, repair and replacement of the lightning strike suppression type lightning arrester, or maintenance and inspection work can be performed smoothly.

  Also, a mounting jig for a conversion device for converting the pin-type lightning arrester of the present invention into a lightning strike suppressing type lightning arrester is provided with a mounting rod having a grip portion, and attached to a vicinity of a distal end portion of the mounting rod, the connection jig. And a holding portion for elastically holding the portion.

  With such a configuration, the lightning strike suppression type lightning arrester is elastically held by the holding portion and attached to the prong.

  Then, after the mounting, when the holding unit is moved so as to be separated from the lightning strike suppression type lightning arrester, the holding unit is smoothly separated from the lightning strike suppression type lightning arrester due to its elasticity.

Further, by attaching the holding portion to the tip of the mounting rod, the lightning strike suppression type lightning arrester can be lifted upward by the mounting rod and mounted on the tip of the prong.
Therefore, when the lightning strike suppression type lightning arrester is mounted, the operation can be performed at a position below the barb, so that the working position can be lowered and the safety can be increased.

  It is preferable to provide a pressing portion above the holding portion, the pressing portion being brought into contact with an upper end of the connection portion held by the holding portion,

  Thereby, when the lightning strike suppression type lightning arrester is mounted on the prong, the lightning strike suppression type lightning arrester can be pushed down toward the prong by the pressing portion, and the mounting work can be made more reliable.

  ADVANTAGE OF THE INVENTION According to this invention, while converting a pin type lightning arrester into a lightning arrester suppression type lightning arrester, it is possible to obtain the lightning arrester effect by lightning mitigation, to simplify the conversion work, and to reduce the installation cost. it can.

It is a schematic diagram for explaining the lightning strike suppression action by one embodiment of the present invention. FIG. 1 shows one embodiment of the present invention, and is an enlarged cross-sectional view of a main part. 1A and 1B show a jig used for attachment and detachment of an embodiment of the present invention, wherein FIG. 1A is a side view, FIG. 1B is a plan view, and FIG. 1C is a cross-sectional view taken along line CC of FIG. It is a side view for explaining the mounting operation of one embodiment of the present invention. It is a side view for explaining the mounting operation of one embodiment of the present invention. It is a side view for explaining the mounting operation of one embodiment of the present invention. It is a side view for explaining the mounting operation of one embodiment of the present invention. It is a side view for explaining the mounting operation of one embodiment of the present invention. It is a side view for explaining the mounting operation of one embodiment of the present invention. It is a side view showing other embodiments of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic diagram for explaining a lightning strike suppression operation according to the present embodiment. In the drawing, reference numeral 1 denotes a conversion device that converts a pin type lightning strike device in the present embodiment into a lightning strike suppression type lightning strike device.

The conversion device 1 is installed above a building 2 to be protected from lightning strike.
That is, the building 2 is provided with a stylus type lightning arrester 3 that attracts lightning and escapes to the ground G, and is provided with a stylus provided at the tip (upper end) of the present embodiment. The device 1 is mounted.
Thereby, the lightning strike suppression type lightning arrester 4 is installed above the building 2.

  The pin-type lightning arrester 3 is electrically connected to the ground G, and is connected to a column 3a erected above the building 2 while being electrically connected to the tip (upper end) of the column 3a. And the projected needle 3b.

  The converter 1 of the present embodiment includes a first electrode 5 formed of a conductive material constituting a lightning strike suppression type lightning arrester 4, and a first electrode 5 disposed below the first electrode 5 with an electric insulator 6 interposed therebetween. The second electrode 7 includes a grounding means for grounding the second electrode to the ground, and the second electrode 7 is provided with a connection portion J that is electrically connected to the tip of the protruding needle 3b. I have.

  In the present embodiment, the pin-type lightning arrester 3 serves as the grounding means.

The first electrode 5 is formed in the shape of a spherical shell protruding upward, and the electric insulator 6 formed in a cylindrical shape is mounted below the first electrode 5.
In the center of the inner surface of the first electrode 5, a projection 5a protruding downward is formed.

The second electrode 7 is formed in a cylindrical shape, is integrally fixed below the electric insulator 6, and forms a connecting cylinder fitted to the protruding needle 3b.
Further, inside the second electrode 7, a hollow disk-shaped support member 8 is fixed at two places at intervals in the length direction of the second electrode 7.

  The support member 8 is formed of a material having good electrical conductivity and elasticity, such as a conductive resin, and has an inner diameter slightly smaller than an outer diameter of the protruding needle 3b.

  In the present embodiment, the connecting portion J is constituted by the cylindrical second electrode 7 and the hollow disk-shaped support member 8.

  The connecting portion J is fitted to the protruding needle 3b. In the fitted state, the protruding needle 32b is elastically inserted into the support member 8, and the lower end of the second electrode 7 is attached to the upper end of the support 3a. It can be brought into contact.

  When the second electrode 7 is in contact with the column 3a, a predetermined distance D is formed between the tip of the protruding needle 32b and the projection 5a of the first electrode 5.

  The thus configured converter 1 of the present embodiment is configured such that the cylindrical second electrode 7 constituting the lightning strike suppression type lightning arrester 4 is fitted to the protruding pin 3 b of the protruding type lightning arrester 3 to thereby form the pin-type lightning arrester 3. It is attached to the lightning arrester 3.

  When the second electrode 7 is fitted on the protruding needle 3b, the protruding needle 3b is inserted into a pair of support members 8 fixed in the second electrode 7 while elastically deforming the support member 8, and The lower ends of the two electrodes 7 are brought into contact with the upper ends of the columns 3a.

As described above, when the second electrode 7 is fitted on the protruding needle 3b, the second electrode 7 is fixed to the protruding needle 3b by the elastic force of the support member 8 and is maintained in an electrically conductive state, so that the protruding type lightning device 3 to ground G.
Further, the projection 5a of the first electrode 5 is positioned at a predetermined distance D from the protruding needle 3b by bringing the second electrode 7 into contact with the column 3a.

  As a result, the existing pin-type lightning arrester 3 can be converted to the lightning strike suppression type lightning arrester 4 by the converter 1.

Then, by a simple operation of attaching the conversion device 1 to the protruding pin 3b of the protruding type lightning arrester 3, the protruding type lightning arrester 3 can be converted to the lightning strike suppressing type lightning arrester 4.
In addition, since the lightning strike suppression type lightning arrester 4 can be constructed by using the existing pin-type lightning strike arrester 3, the installation cost of the lightning strike suppression type lightning arrester 4 can be greatly reduced.

  Here, as shown in FIG. 1, when a thundercloud C carrying negative ions at the cloud bottom approaches above the building 2 on which the conversion device 1 is mounted and the lightning strike suppression type lightning arrester 4 is installed, The opposite charge (positive charge) is distributed on the surface of the ground G, and the positive charge also collects on the grounded second electrode.

  Then, the first electrode 5 disposed via the insulator takes a negative charge due to the action of the capacitor.

  By this action, the occurrence of an upward streamer in the lightning strike suppression type lightning arrester 4 and its surroundings can be suppressed, and the occurrence of lightning strike can be suppressed.

  Next, a mounting jig used for mounting the above-described conversion device 1 on the bar 3b of the bar-type lightning arrester 3 will be described with reference to FIG.

  A mounting jig denoted by reference numeral 20 in FIG. 3 is mounted on a mounting rod 21 having a grip portion 21 a at a base end and attached to a distal end of the mounting rod 21, and is brought into contact with an upper end of the conversion device 1. It comprises a pressing plate 22 forming a pressing portion, and a pair of holding arms 23 forming a substantially C-shaped holding portion mounted on the mounting rod 21 below the pressing plate 22.

  The mounting rod 21 is configured to be extendable and contractable, and can be fixed to an arbitrary length by a lock mechanism 21b.

  The pair of holding arms 23 are formed of an elastic material such as spring steel, and the width of the opening is formed slightly smaller than the outer diameter of the cylindrical second electrode 7.

When the opening is pressed against the second electrode 7 from the radial direction, the holding arm 23 is elastically deformed so as to expand the opening, and takes in the second electrode 23 inside.
The holding arm 23 having the second electrode 23 incorporated therein holds the conversion device 1 while holding the outer periphery of the second electrode 23.

In addition, since the width of the opening of the holding arm 23 is formed slightly smaller than the outer diameter of the second electrode 23, when the converter 1 is relatively moved in the removing direction, the elasticity between the converter 1 and the converter 1 is improved. And is prevented from being disengaged.
Further, by making the force for detaching the holding arm 23 from the conversion device 1 larger than the engagement force generated by the elasticity, the holding arm 23, that is, the mounting jig 20 is removed from the conversion device 1. It can be removed.

  Next, a procedure for attaching the conversion device 1 to the existing pin-type lightning arrester 3 using the above-described mounting jig 20 and converting the pin-type lightning arrester 3 into the lightning strike suppression type lightning arrester 4 will be described.

  First, as shown by the arrow in FIG. 4, after the conversion device 1 is positioned on the side of the space formed by the pressing plate 22 and the holding arm 23 of the mounting jig 20, As shown by the arrow, the conversion device 1 is pushed toward the space while pushing and holding each of the holding arms 23.

  As a result, as shown in FIG. 5, the conversion device 1 is attached to the mounting jig 20 in a state where the outer peripheral portion is held by the holding arms 23 and the upper end portion is brought into contact with the lower surface of the pressing plate 22. Attached to.

Next, as shown in FIG. 6, the conversion device 1 is positioned by a mounting jig 20 above a pin 3 b installed at the tip of the existing pin-type lightning arrester 3.
Thus, the mounting jig 20 is lowered together with the converter 1 as shown by the arrow in the same figure, and the converter 1 is mounted on the tip of the needle type lightning arrester 3 as shown in FIG.

  Here, the conversion device 1 is reliably pressed down by the pressing plate 22 provided at the upper end portion of the mounting jig 20, so that the conversion device 1 is securely fitted to the tip of the pin-type lightning arrester 3 (that is, the pin 3 b), In addition, as shown in FIG. 2, the support member 8 mounted inside the conversion device 1 is securely fixed by being elastically pressed against the protruding needle 3b.

Further, as shown by an arrow in FIG. 7, the grip 21 a of the mounting jig 20 is moved so as to be separated from the pin-type lightning arrester 3.
By this operation, as shown in FIG. 8, the holding arm 23 of the mounting jig 20 is pulled away from the conversion device 1 against its elastic force, and as shown in FIG. Remove from the lightning arrester 3.

  By the above operation, the conversion device 1 can be mounted on the tip of the needle-type lightning arrester 3, and the needle-type lightning arrester 3 can be converted into the lightning-strike suppressing type lightning arrester 4. Can protect you from lightning.

  As described above, in the present embodiment, the lightning arrester is converted from the pin-type to the lightning strike suppressing type by the simple operation of fixing the conversion device 1 to the barb 3b provided at the tip of the existing bar-type lightning arrester 3. can do.

  In addition, since the existing pin-type lightning arrester 3 can be used as a structure such as a support member for installing the conversion device 1, the cost of installing a lightning strike type lightning arrester can be greatly reduced.

On the other hand, in order to replace the conversion device 1 or to remove the conversion device 91 for maintenance and inspection, the above-described mounting procedure can be performed in a reverse procedure.
Therefore, replacement work, maintenance work, and the like of the conversion device 1 can be easily performed.

FIG. 10 shows another embodiment of the present invention.
In the conversion device 30 of the present embodiment, a lightning strike suppression type lightning arrester 31 is arranged with a first electrode 32 having a spherical shell shape curved upward and an electric insulator 33 interposed below the first electrode 32. , A spherical shell-shaped second electrode 34 curved downward, and a support rod 35 made of a conductive material and extending downward from the second electrode 34, and the connecting portion is a protruding needle. The connecting tube 36 is fitted to the support rod 35 via a stay 37.
The connection tube 36 has an internal structure similar to that of the above-described embodiment.

  The lightning strike suppression type lightning arrester 31 according to the present embodiment has an existing configuration in which the lightning strike suppression type lightning arrester 31 is installed using the support rod 35, and the conversion device 30 is configured using the existing lightning strike suppression type lightning arrester 31.

  With this configuration, the conversion device 30 can be created by adding a small number of members while using the lightning strike suppression type lightning arrester 31 having the existing configuration.

  Note that the shapes, dimensions, and the like of the respective constituent members shown in the embodiment are merely examples, and can be variously changed based on design requirements and the like.

  For example, an example in which the support member 8 is formed of a conductive resin has been described. However, the material is not limited to this, and any material that can elastically and abut against the stylus 3b while ensuring conductivity is used. Can be used.

DESCRIPTION OF SYMBOLS 1 Conversion device 2 Building 3 Piercing type lightning arrester 3a Prop 3b Piercing 4 Lightning strike suppression type lightning arrester 5 First electrode 5a Projection 6 Electrical insulator 7 Second electrode 8 Supporting member 20 Mounting jig 21 Mounting rod 21a Gripping part 21b Lock mechanism 22 Press plate (press portion)
23 Holding arm (holding part)
Reference Signs List 30 conversion device 31 lightning strike suppression type lightning arrester 32 first electrode 33 electrical insulator 34 second electrode 35 support rod 36 connecting cylinder 37 stay C thundercloud D interval G ground J connection

Claims (8)

What is claimed is: 1. A lightning protection device for converting a lightning protection device into a lightning suppression device, wherein the lightning suppression device comprises a first electrode formed of a conductive material, and an electrical insulator disposed below the first electrode. A second electrode disposed between the first electrode and grounding means for grounding the second electrode to the ground, and a connecting portion electrically connected to a pin constituting the pin-type lightning arrester is provided on the second electrode. A conversion device for converting a pin-type lightning arrester, which is provided, into a lightning strike suppression type lightning arrester.   The said connection part is continuously provided below the said electrical insulator, is fitted by the said needle from the front-end | tip, and is comprised by the connection cylinder electrically connected to this needle. A conversion device for converting the pin-type lightning arrester according to Item 1 to a lightning strike suppression type lightning arrester. The connecting portion is formed separately from the second electrode, and is fitted on the protruding needle from the tip thereof, and further includes a connecting tube electrically connected to the protruding needle . The pin-type lightning arrester according to claim 1, wherein the lightning arrester is connected to a stay provided continuously below the electrode, and the stay is electrically connected to the second electrode . Conversion device to convert.   A support member is provided inside the connection tube, which is pressed against the outer periphery of the protruding needle inserted into the connection tube and restrains relative movement between the connection tube and the protruding needle. A conversion device for converting the pin-type lightning arrester according to claim 2 or 3 into a lightning strike suppression type lightning arrester.   The converter according to claim 4, wherein the support member is formed of a conductive resin.   The converter according to any one of claims 1 to 5, wherein the connection portion is configured to be detachable from the stylus.   A mounting jig used when mounting a lightning strike suppression type lightning arrester to a protruding needle of a rod type lightning arrester, wherein the mounting jig is provided with a gripping portion, and is mounted near a tip of the mounting rod. And a holding portion for elastically holding the connection portion according to any one of claims 6 to 9, for mounting a conversion device for converting a needle-type lightning arrester into a lightning strike suppression type lightning arrester. jig. The lightning prevention device according to claim 7, wherein a pressing portion is provided above the holding portion to be in contact with an upper end of the connection portion held by the holding portion. A jig for mounting a conversion device that converts to a lightning arrester.