JPS6031044B2 - Overhead electric line and its installation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an overhead power line equipped with an optical communication function.

In addition, in the present invention, the glass fiber wire for optical communication is
It refers to both a glass fiber wire for optical communication consisting of only one fiber wire and a cable made by collecting a plurality of such fiber wires. BACKGROUND OF THE INVENTION As an overhead electric line of this type, one in which optical communication glass fiber wires are mixed and twisted into an overhead electric wire made by combusting a large number of metal wires is known.

(Refer to Japanese Unexamined Patent Publication No. 24-24-2). However, in this line, the glass fiber wires are twisted together with other Qin wires, so the twisting process may damage the glass fiber wires or make it difficult to connect the glass fiber wires to each other. Electric wires had drawbacks that made them unsuitable.

In addition, it is also known that glass fiber wires are attached to the outer periphery of overhead electric wires (for example, the above-mentioned
(See 24 Spot No. 2 Publication).

However, this type of cable has a structure in which the glass fiber wire protrudes from the outer meridian of the overhead power line, so
There is a drawback that not only is it easy to be damaged by a spacecraft during maintenance work on the installed overhead power lines, but also that the protruding parts increase wind resistance.

Purpose of the Invention In view of the above-mentioned circumstances, it is an object of the present invention to not only prevent glass fiber cables for optical communication from being damaged during the manufacture of electric wires or during operation of a floating machine during maintenance after installation, but also to easily attach them to existing electric wires. An object of the present invention is to provide an overhead electric line and a method for constructing the same which can be applied to the above and which does not cause an increase in wind resistance.

Structure of the Invention In order to achieve the above object, the present invention has the following structure.

That is, in the first aspect of the invention, an optical fiber line for optical communication is housed in a twisted structure on the outer periphery of an overhead electric wire formed by twisting together a large number of metal wires, and is wound around the wire.

As the glass fiber wire for optical communication, a publicly known type is used, and its thickness is such that it can be stored in the twisted groove on the outer periphery of the overhead electric wire, and the outermost top of the outermost metal wire of the overhead electric wire is tied. It shall be possible for the glass fiber wire to protrude from the overhead wire by an amount within an error range.

Moreover, an aluminum coating layer, a Teflon coating layer, a protection tube, etc. can be attached to the outer periphery of the glass fiber wire to protect it. As the overhead electric wire, an overhead power transmission line such as an ACSR, an overhead ground wire, etc., which is made of a large number (usually 7 or more, but can be any number) of metal millet wires, are used.

As a means of storing and wrapping a glass fiber wire for optical communication in a twisting structure around the outer periphery of an overhead electric wire, the glass fiber wire is wound while being stored in a twisting structure around the outer periphery of the overhead electric wire, and this is intermittently applied to the outermost layer, for example. For each predetermined pitch of the twisted metal wire, an IJ ring made of plastic or rubber, etc.
The means for attaching and fixing with adhesive tape, post-adhesive, etc., or, depending on the case, may be simply attached without using the above-mentioned means.

Further, the step of storing and wrapping the glass fiber wires in the overhead wire twisting area may be performed during the overhead wire manufacturing process, for example, immediately after the stranding step of the strands. It is desirable to do this after the construction has been completed.

Furthermore, in the overhead electric line according to the present invention, at the connection parts between the overhead electric wires, the clamp parts of the smoother, the damper, etc., the glass fiber wire may be wrapped around the outer periphery of the above-mentioned clamps, etc. It is also possible to provide a groove for storing the glass fiber wire on the outer periphery and store the glass fiber wire in this groove.

Further, the second invention is characterized in that after an overhead electric wire made by twisting a large number of metal wires is installed, the glass fiber wire for optical communication is stored in the twisted area around the outer periphery of the overhead electric wire and is wrapped around it. That is.

In this second invention, after installing the overhead electric wire between the support towers,
For example, a worker rides on a floating machine to store and wrap glass fiber wires in the twisted grooves around the outer periphery of overhead electric wires.
The configurations of the overhead wires, glass fiber wires, etc. other than this are the same as in the first invention.

Example Embodiments of the present invention will be described based on FIGS. 1 to 4.

1 and 2 show an embodiment of the first invention, and in the figures, 1 indicates an overhead feed line such as an ACSR, and 2 indicates a glass fiber line for optical communication.

The glass fiber wire 2 is constructed by storing a plurality of the glass fiber wires in a twisted structure on the outer periphery of the overhead power transmission line 1 and winding them.

As a means of attachment, the glass fiber wire 2 is stored and wound within the twisting structure around the outer periphery of the Aoi aerial transmission line 1, and is attached with rings 3 at every pitch of the outermost layer metal wire of the overhead power transmission line 1. It is fixed.

Ring 3 also has a gluing effect. As the glass fiber wire 2, a standard one is used, and its thickness is such that it can be stored in the twisted area of the overhead power transmission line 1, and furthermore, it can be stored in the outer meridian of the overhead power transmission line 1, as shown in Fig. 2. It is possible.

3 and 4 show an embodiment of the second invention, in which numeral 4 indicates a steel tower and an overhead power transmission line 1 has already been installed.

After installing the overhead power transmission line 1 in this way, a worker boards the Sorahata machine 5, stores the glass fiber wire 2 in the twisted groove of the overhead power transmission line 1, wraps it around it, and wraps it at a predetermined pitch. Fix it with ring 3.

Further, the connecting portion between the overhead power transmission lines 1 is formed by providing a groove 8 for storing the glass fiber wire 2 in the connecting sleeve 6 as shown in FIG. I have let it pass. In addition, in the clamp section of the smoother and damper attached to the overhead power transmission line 1, the glass fiber wire 2 is stored in the storage groove 8 provided in the clamp section 7 and passed through the clamp section 7, as shown in the opening in Figure 4. be. Effects of the invention According to the first invention, the overhead power line,
The glass fiber wire for optical communication is constructed by wrapping and wrapping a large number of metal wires together in a twisted structure on the outer periphery of the overhead wire. Since it does not protrude from the meridian, the glass fiber wire is less likely to be damaged by a whistle blower, and there is no increase in wind resistance.

Moreover, since the glass fiber wires are attached to the outer periphery of the overhead electric wires, it is convenient for mutual connection and maintenance of the glass fiber wires, and it is also easy to apply to existing overhead electric wires.

Further, according to the method for constructing an overhead power line, which is the second invention,
Since glass fiber wires can be attached to overhead power lines without twisting, stretching, tensioning, etc., overhead power lines can be reliably installed without damaging the glass fiber wires. Effects such as being able to easily obtain the overhead electric line according to the invention are achieved.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of an overhead electric line according to the first invention, Fig. 2 is an enlarged sectional view taken along line A-A' in Fig. 1, and Fig. 3 is according to the second invention. FIG. 4B is an explanatory diagram illustrating a method of constructing an overhead electric wire; FIG. 1...Overhead power transmission line, 2...Glass fiber line for optical communication, 3...Ring, 4...
Steel tower, 5...Chuahata machine, 6...Connection sleeve, 7...Clamp. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. An overhead electric line characterized in that an optical fiber wire for optical communication is housed in a twisted groove on the outer periphery of an overhead electric wire made by twisting a large number of metal wires, and is wound around the wire. 2. An overhead electric line characterized in that after an overhead electric wire made by twisting a large number of metal wires is installed, a glass fiber wire for optical communication is housed in a twisting groove on the outer periphery of the overhead electric wire and is wrapped around the wire. construction method.