JP2002174374A - Detonator - Google Patents

Abstract

(57) [Summary] [Problem] Even if a conductive coating layer covering the outer peripheral area of a pipe body is damaged by a discharge during a lightning strike, the pipe body is not damaged and is not damaged by a lightning strike. Provide a detonation proof that can withstand the discharge of the blast. SOLUTION: This pipe is made of a conductive member that can be conductively connected to conductive equipment, and an outer peripheral region of the pipe main body 2 is covered with a conductive coating layer 3. At the same time, the conductive coating layer 3 can be conductively connected to the conductive equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightning arrester capable of preventing damage to a tube main body due to discharge at the time of a lightning strike, and more particularly to a lightning arrester having an outer peripheral region covered with a conductive coating layer. is there. In the present invention, the term "priming tube" refers to a part of a tube (a conductive coating layer described later) added to the tube body, which is damaged by a discharge during a lightning strike. Means that it can withstand a lightning discharge without damage.

[0002]

2. Description of the Related Art For example, an inner tube used in a lamp inner tube system for gas supply or the like is electrically connected to a conductive facility so that the lamp inner tube system itself and the conductive facility are connected to one ground. In general, in order to eliminate the interference between the various types of conductive facilities indoors, the facilities are usually provided in a form of independent single grounding.

[0003]

However, once a lightning strike occurs, a potential difference is generated between the grounding electrodes, and various conductive facilities are often damaged. Also in the inner tube used in the system, a discharge may occur due to a large potential difference instantaneously generated between the inner tube and the equipment in the vicinity thereof, causing pinhole damage to the inner tube and causing inconvenience such as gas leakage. .

[0004] The present invention solves the above-mentioned disadvantages of the prior art. Even if the conductive coating layer covering the outer peripheral area of the tube body is damaged by the discharge at the time of lightning, An object of the present invention is to provide a lightning arrester capable of withstanding a lightning discharge without being damaged.

[0005]

In order to achieve the above object, the invention according to claim 1 is a pipe formed by a conductive member which can be conductively connected to conductive equipment. The outer peripheral region of the pipe body is covered with a conductive coating layer, and the conductive coating layer can be conductively connected to the conductive equipment.

According to a second aspect of the present invention, in the first aspect of the present invention, the pipe body covered with the conductive coating layer is configured as a flexible pipe.

According to a third aspect of the present invention, in the second aspect, the flexible pipe covered with the conductive coating layer is formed of a corrugated pipe.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the conductive coating layer has an insulating layer laminated on an inner peripheral surface thereof.

The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the conductive coating layer is made of a conductive polymer.

According to a sixth aspect of the present invention, in the fourth aspect of the invention, the conductive coating layer is formed of a metal film.

According to a seventh aspect of the present invention, in the fourth aspect of the invention, the conductive coating layer is formed of a metal mesh.

The invention according to claim 8 is the invention according to any one of claims 4 to 7, wherein the conductive coating layer is electrically connected to the pipe main body by a joint for joining.

According to a ninth aspect of the present invention, in the invention described in any one of the first to eighth aspects, the pipe is a gas pipe as an inner pipe.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The lightning arrester of the present invention, in its use form, is electrically conductively connected to conductive equipment, and the lightning arrester itself is, for example, a conductive member applied to a lamp inner tube system such as for gas supply. When the inner tube is conductively connected to conductive equipment, the inner tube itself constitutes one ground electrode. In addition, although the usage form of the detonation tube of the present invention is illustrated for an inner tube applied to a lamp inner tube system for gas supply or the like,
The lightning arrester of the present invention is not limited to this, and can be applied to this kind of conduit used in various facilities.

First, FIG. 1 shows a first embodiment of a detonation arrester of the present invention.
It will be described based on. The lightning arrester 1 includes a tube main body 2 made of a conductive member, and a conductive coating layer 3 covering an outer peripheral region of the tube main body 2.

More specifically, the tube main body 2 is made of a thin, flexible metal conductive member made of, for example, stainless steel and having a thickness of about 0.2 to 0.25 mm. Is formed by a bendable corrugated pipe having a waveform in the axial direction of the pipe main body 2, and conduction of the pipe main body 2 to conductive equipment (not shown) is by a normal joint.

The conductive coating layer 3 is made of a conductive polymer. A typical conductive polymer is polythiazyl. A conductive material such as copper, silver or graphite is dispersed in a polymer material. The conductive resin may be a conductive resin, and the conduction of the conductive coating layer 3 to the conductive equipment is based on the joint for joining through the pipe body 2 covered with the conductive coating layer 3. The coating layer 3 may be directly connected to the joint for joining.

The first embodiment of the detonation arrester 1 of the present invention is constructed as described above. In its use form, the detonation arrester 1 is electrically conductively connected to conductive equipment. 1 itself is positioned as an inner tube made of a conductive member applied to a lamp inner tube system for gas supply or the like, and when the inner tube is conductively connected to conductive equipment, the inner tube is That is, since the lightning arrester 1 constitutes one ground electrode, once a lightning strike occurs, a large potential difference instantaneously occurs between the lightning arrester 1 and various conductive facilities installed in the vicinity thereof. Discharge will occur.

Although the conductive coating layer 3 covering the outer peripheral area of the tube body 2 of the lightning arrester 1 is damaged by the lightning discharge, a part of the lightning current is reduced by the conductive coating layer 3.
Most of the lightning current flows from the conductive coating layer 3 to the ground through the joint for joining, through the conductive joints, to the ground, while being dispersed from the contact surface between the pipe body 2 and the pipe body 2. Since the energy is not concentrated at one point, the influence on the pipe body 2 is minimized.

Therefore, even if the conductive coating layer 3 covering the outer peripheral region of the tube main body 2 is damaged, the tube main body 2 of the lightning arrester 1 can withstand a discharge during a lightning strike without being damaged. Can be.

When the tube body 2 covered with the conductive coating layer 3 is formed of a flexible tube, a long tube can be easily laid in a bent conduit.

When the flexible pipe covered with the conductive coating layer 3 is formed of a corrugated pipe, this makes it possible to isolate most of the pipe main body 2 from the conductive coating layer 3. The influence of the discharge at the time of lightning can be further minimized.

When the conductive coating layer 3 is made of a conductive polymer, this can contribute to reinforcement and flexibility of the tube body 2.

When the arrester 1 is a gas tube as the inner tube of the lamp, it is possible to prevent gas from leaking from the gas tube.

Next, a second embodiment of the detonator of the present invention is shown in FIG.
It will be described based on. The lightning arrester 1 has a tube main body 2 made of a conductive member, and a conductive coating layer 3 covering an outer peripheral region of the tube main body 2, and a configuration of the tube main body 2 itself and a conductive coating layer. 3 itself, the first
This is the same as the embodiment.

The greatest difference between the second embodiment and the first embodiment is that the insulating layer 4 made of a resin layer is formed on the inner peripheral surface of the conductive coating layer 3.
Are laminated, so that the tube main body 2 and the conductive coating layer 3 are non-conductive by the insulating layer 4, and as a means for conducting between the tube main body 2 and the conductive coating layer 3,
A conductive portion with the tube main body 2 may be provided by a joint for joining the detonation arrester 1 and the conductive equipment, or at a required portion or a required interval of the conductive coating layer 3. In addition, the conductive coating layer 3
Can be made of a conductive polymer as in the first embodiment, and can also be made of a metal film or a metal mesh.

Since the second embodiment of the arrester 1 according to the present invention is constructed as described above, the tube body 2 can be isolated from the conductive coating layer 3 by the insulating layer 4, and the tube body 2 Can be further minimized by lightning discharge.

When the conductive coating layer 3 is made of a metal film, it can contribute to reinforcement and flexibility of the tube body 2.

When the conductive coating layer 3 is made of a metal mesh, it can contribute to reinforcement and flexibility of the pipe main body 2.

When the conductive coating layer 3 is electrically connected to the tube main body 2 by the joint for joining, the lightning current can be conducted and dispersed to the tube main body 2 without any additional conductive means. .

[0031]

Since the lightning arrester of the present invention is constructed as described above, the conductive coating layer covering the outer peripheral region of the tube main body of the lightning arrester is damaged by the discharge at the time of lightning strike. Although part of the lightning current is dispersed from the contact surface between the conductive coating layer and the tube body and flows through the tube body, most of the lightning current flows from the conductive coating layer to the conductive equipment via the joint for joining. Then, the energy is not concentrated on one point of the pipe main body, so that the influence on the pipe main body is minimized.

Therefore, even if the conductive coating layer covering the outer peripheral region of the tube main body is damaged as a lightning arrester, the tube main body can withstand a discharge during a lightning strike without being damaged.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing a first embodiment of a detonation arrester according to the present invention.

FIG. 2 is a partial sectional side view showing a second embodiment of the detonation arrester according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Detonation resistance 2 ... Tube main body 3 ... Conductive coating layer 4 ... Insulating layer

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[Procedure amendment]

[Submission date] August 17, 2001 (2001.8.1)
7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

Wherein said tube is lightning tube according to any one of claims 1 to 9, characterized in that a gas pipe as the inner pipe.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

The invention according to claim 6 is the invention according to claims 1 to 4.
In the invention described in any one of the above aspects, the conductive coating layer is formed of a metal film.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

[0011] The invention according to claim 7 is the invention according to claims 1-4.
In the invention described in any one of the first to third aspects, the conductive coating layer is formed of a metal mesh.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

The invention according to claim 8 is the invention according to any one of claims 4 to 7, wherein the conductive coating layer is electrically connected to the pipe main body by a joint for joining. The invention according to claim 9 is the invention according to any one of claims 4 to 7.
In the invention described in the paragraph, the conductive coating layer
Conduction with the pipe main body is provided by the conductive part with the pipe main body provided at the key point.
It is what has been.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013] The invention according to claim 10, in the invention described in any one of claims 1 to 9 tubes are those which are gas tube as the inner tube.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

When the conductive coating layer 3 is electrically connected to the tube main body 2 by the joining joint, it is possible to conduct and disperse the lightning current to the tube main body 2 without requiring a separate conductive means. . A conductive coating layer 3 is provided at the required location
Is electrically connected to the pipe main body 2 by a conductive portion with the pipe main body 2.
In this case, the conduction portion penetrates the insulating layer 4
The lightning current is conducted to the tube body 2 by simple conductive means.
Can be scattered.

Claims (9)

[Claims] 1. A tube comprising a conductive member capable of being conductively connected to a conductive facility, wherein an outer peripheral region of the tube main body is covered with a conductive coating layer. A detonation arrester characterized in that the conductive coating layer can be conductively connected to the conductive equipment. 2. The lightning arrester according to claim 1, wherein the tube main body covered with the conductive coating layer is configured as a flexible tube. 3. The lightning arrester according to claim 2, wherein the flexible tube covered with the conductive coating layer is configured as a corrugated tube. 4. The arrester according to claim 1, wherein the conductive coating layer has an insulating layer laminated on an inner peripheral surface thereof. 5. The arrester according to claim 1, wherein the conductive coating layer is made of a conductive polymer. 6. The arrester according to claim 4, wherein the conductive coating layer is made of a metal film. 7. The arrester according to claim 4, wherein the conductive coating layer is formed of a metal mesh. 8. The conductive coating layer is electrically connected to the pipe body by a joint for joining.
A detonation arrester according to any one of the preceding claims. 9. The lightning arrester according to claim 1, wherein the tube is a gas tube as an inner tube.