JP6960735B2 - Conductive clothing for power transmission - Google Patents

Description

The present invention relates to a conductive garment for power transmission.

Conventionally, as conductive work clothes to be worn instead of work clothes, those that reduce the electric shock of an operator to an electrostatic induction voltage by wearing them when working on an ultra-high voltage power transmission line are known (for example, patents). See Reference 1.).

The conductive work clothes described in Patent Document 1 include a helmet cover, an outer garment, and trousers, which are made of a fabric obtained by braiding a blended yarn of polyester or cotton and conductive plated fibers or stainless fibers, and include a helmet cover and a helmet cover. It is connected to the jacket with a connection band.

Japanese Unexamined Patent Publication No. 11-350214

However, the conductive work clothes described in Patent Document 1 are generally made of plain weave fabric and are worn as outerwear, and breathability is not taken into consideration. For this reason, there is a problem that heat tends to be trapped, sweat is particularly easy to sweat in summer, workability is lowered, and the risk of heat stroke is increased.

An object of the present invention is to provide a conductive garment for power transmission that suppresses the electrostatic induction current to the human body when worn for work on a steel tower of an ultra-high voltage power transmission line to be less than the sensed current and has good air permeability. There is.

One aspect of the present invention provides the following conductive clothing for power transmission in order to achieve the above object.

[1] A conductive garment for power transmission that is worn as an intermediate garment made of a knit cloth between underwear and work clothes.
Electrically and conductive material short-sleeved conductive yarn plated formed by sewing a conductive cloth woven into a shape rated child to the knitted fabric by the shirt,
Trousers that are formed by sewing the conductive cloth and have a length between the knee and ankle.
A helmet cover formed by sewing the conductive cloth and
A neck cover formed by sewing the conductive cloth, electrically connected to the helmet cover, and covering the back side of the neck.
A first connecting portion that electrically connects the shirt and the trousers,
A second connecting portion that electrically connects the trousers and the conductive shoes,
A third connecting portion that electrically connects the helmet cover and the shirt,
Have,
In the conductive cloth , the conductive threads are spaced at regular intervals so that the electric resistance between the helmet cover and the second connecting portion is 20 Ω or more and the shielding rate against the electrostatic induction current is 70% or more. A conductive garment for power transmission woven into the knit cloth in a grid pattern.
[2] The conductive cloth for power transmission according to the above [1], wherein the conductive cloth is woven in a grid pattern at regular intervals of 2 mm or more and 5 mm or less.
[ 3 ] The conductive garment for power transmission according to the above [1] or [2] , wherein the shielding rate against the electrostatic induction current at the time of sweating is maintained at 70% or more when the number of washings is 20 times.

According to the inventions of claims 1 and 2 , the human body current when worn for work on an ultra-high voltage power transmission line on a steel tower is suppressed to less than the sensed current, and the air permeability is good and the heat is dissipated from the human body. Can provide an improved conductive garment for power transmission.
According to the third aspect of the present invention, it can be used as a conductive garment for power transmission even after repeated washing.

FIG. 1 is a front view showing an example of the configuration of a conductive batter for power transmission according to an embodiment of the present invention. FIG. 2 is a rear view showing an example of the configuration of the conductive batter for power transmission according to the embodiment of the present invention. FIG. 3 is a schematic view showing an example of a work place of a worker wearing a conductive garment for power transmission.

FIG. 1 is a front view showing an example of the configuration of a conductive batter for power transmission according to an embodiment of the present invention. FIG. 2 is a rear view showing an example of the configuration of the conductive batter for power transmission according to the embodiment of the present invention.

The power transmission conductive garment 1 is worn by the worker 2, and is composed of a helmet cover 10, a short-sleeved shirt 11, trousers 12, a neck cover 13, and the like. The power transmission conductive garment 1 is worn as an intermediate garment on the underwear 31 as shown, except for the helmet cover 10 to be put on the helmet 30, and is further not shown on the power transmission conductive garment 1 shown. It is preferable to wear.

The helmet cover 10 is provided with a neck cover 13 that covers the back side of the neck, and is electrically connected to the helmet cover 10.

The shirt 11 has a neck opening 110, a zipper 111 is provided on the front surface, and a sleeve portion 112 is provided near the shoulder.

The helmet cover 10 and the shirt 11 are electrically connected by a connecting portion 14B (third connecting portion). The connecting portion 14B may be provided on the helmet cover 10, the shirt 11, may be provided independently of the helmet cover 10 and the shirt 11, and the helmet cover 10 and the shirt 11 may be provided independently. The connecting portions provided on both sides of the shirt 11 may be connected to each other.

Further, the shirt 11 and the trousers 12 are electrically connected by the connecting portion 14A (first connecting portion). The connecting portion 14A may be provided on the shirt 11, may be provided on the trousers 12, may be provided independently of either the shirt 11 or the trousers 12, or may be provided on the shirt 11 and the trousers 12. The connecting portions provided on both sides may be connected to each other. Further, when the shirt 11 and the trousers 12 are worn on top of each other to be electrically connected, the connecting portion 14A may be omitted.

The length of the trousers 12 is preferably between the knee and the ankle, for example, about half the length of the calf. This makes it possible to improve heat dissipation from the human body. The length of the trousers 12 is determined from the viewpoint of heat dissipation and shielding rate.

Further, the trousers 12 have a stirrup trouser 15 (second connecting portion), and the stirrup trousers 15 are electrically connected to the conductive shoes 32. If the trousers 12 and the shoes 32 are worn on top of each other to be electrically connected, the stirrup trousers 15 may be omitted.

As the helmet cover 10, the shirt 11, the trousers 12, and the neck cover 13, for example, a polyester knit cloth woven with conductive threads in a grid pattern with an interval of 5 mm is used (conductive cloth). The conductive thread is a polyester thread plated with a conductive material, for example, silver. The distance between the conductive threads is determined in the range of, for example, 2 to 7 mm or 2 to 5 mm, depending on the target shielding rate (for example, 70%).

The electrical resistance between the helmet cover 10 and the stirrup pants 15 is about 20Ω at the time of manufacture. The deterioration due to washing was slight, the electric resistance after washing about 20 times or more was several hundred Ω, and the influence on the shielding rate was slight. Therefore, the shielding rate after washing 20 times is maintained at about 70% or more. The method of measuring the shielding rate is to wear a conductive garment 1 for power transmission on a mannequin doll that simulates a human body, apply an appropriate voltage between the induction electrode provided above the mannequin's head and the ground, and induce the current to flow through the mannequin. The shielding rate is calculated by measuring the current and the induced current flowing through the conductive coating for power transmission. The shielding rate when sweating (when 200 g of salt water was soaked) was measured in the same manner as above by simulating an underwear shirt in a sweaty state, but after washing about 20 times or more. The shielding rate of is maintained at about 70% or more.

(Effect of embodiment)
According to the above-described embodiment, since the helmet cover 10, the shirt 11, the trousers 12, and the neck cover 13 are sewn using the conductive cloth, the human body current when worn for work on the steel tower of the ultra-high voltage power transmission line is generated. It can be suppressed below the sensed current and air permeability can be ensured. Further, since the shirt 11 has short sleeves and the trousers 12 have a shorter length than usual, heat dissipation from the human body is improved.

In addition, by making the thickness of the conductive cloth moderately thin, not only can it achieve supple comfort, but also because it is worn as an intermediate piece of clothing, scratches and scratches on the tower members during work can be prevented. Hard to be directly traumatized.

Further, since the shirt 11 and the trousers 12 are separated into upper and lower parts, the structure is such that they can be easily attached and detached and can be easily added.

Further, since a polyester knit cloth in which conductive threads are woven in a lattice pattern is used as the conductive cloth, the breathability is excellent as compared with the conventional conductive work clothes, and the cost can be suppressed.

[Example of work place]
FIG. 3 is a schematic view showing an example of a work place of a worker wearing a conductive garment for power transmission.

The steel towers 4 are arranged at regular intervals and suspend a plurality of electric wires 5. A voltage of 66 kV, 154 kV, 275 kV, or 500 kV is applied to the electric wire 5, but here, when performing maintenance work or the like on a steel tower that transmits a voltage of 275 kV or more and particularly at a voltage of 500 kV, the conductive clothing 1 for power transmission is used. Used.

In the work on the steel tower 4 of the ultra-high voltage power transmission line (275 kV or more, especially 500 kV) (see FIG. 3), electrostatic induction occurs due to the voltage applied to the electric wire 5, and the worker 2 is grounded in the steel tower or the like. Electricity (human body current) flows in the body when touched. Since it is preferable to suppress the human body current to the sensed current (1 mA) or less, the worker 2 wears the power transmission conductive garment 1 and works on the steel tower 4 as shown in FIG.

The present invention is not limited to the above-described embodiment, and various modifications can be made within a range that does not deviate from the gist of the present invention. For example, although the shirt 11 is short-sleeved, the sleeve length may be freely changed, such as three-quarter sleeves, as long as the required shielding rate can be secured. Further, although the zipper 111 is provided in front of the shirt 11, a button or a string may be used instead of the zipper 111.

1 ... Conductive clothing for power transmission, 2 ... Workers, 4 ... Steel towers, 5 ... Electric wires, 10 ... Helmet covers,
11 ... short-sleeved shirt, 12 ... trousers, 13 ... neck cover, 14A, 14B ... connecting part,
15 ... Stirrup trousers, 30 ... Helmet, 31 ... Underwear, 32 ... Shoes, 110 ... Neck opening,
111 ... zipper, 112 ... sleeves

Claims (3)

A conductive garment for power transmission that is worn as an intermediate garment consisting of a knit cloth between underwear and work clothes.
Electrically and conductive material short-sleeved conductive yarn plated formed by sewing a conductive cloth woven into a shape rated child to the knitted fabric by the shirt,
Trousers that are formed by sewing the conductive cloth and have a length between the knee and ankle.
A helmet cover formed by sewing the conductive cloth and
A neck cover formed by sewing the conductive cloth, electrically connected to the helmet cover, and covering the back side of the neck.
A first connecting portion that electrically connects the shirt and the trousers,
A second connecting portion that electrically connects the trousers and the conductive shoes,
A third connecting portion that electrically connects the helmet cover and the shirt,
Have,
In the conductive cloth , the conductive threads are spaced at regular intervals so that the electric resistance between the helmet cover and the second connecting portion is 20 Ω or more and the shielding rate against the electrostatic induction current is 70% or more. A conductive garment for power transmission woven into the knit cloth in a grid pattern. The conductive cloth for power transmission according to claim 1, wherein the conductive cloth is woven in a grid pattern at regular intervals of 2 mm or more and 5 mm or less. The conductive garment for power transmission according to claim 1 or 2, wherein when the number of washings is 20 times, the shielding rate against the electrostatic induction current at the time of sweating is maintained at 70% or more.

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