JPS6032731Y2 - Coil for nuclear fusion device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a coil for a nuclear fusion device.

FIG. 1 shows an example of a commonly used insulated wire.

The conductor 1 is generally round and is made of solid conductors or thin wires twisted together, and the outer periphery of the conductor 1 is covered with an insulating film 2 of organic plastic (e.g. polyethylene, Teflon, nylon) or rubber (neoprene, etc.). A sheath 3 (for example, vinyl or glass braid) is coated thereon for protection.

Figure 2 shows a hardening type insulation, which is constructed by covering a conductor 4 with an insulating film 5 impregnated with a hardening varnish such as mica tape, and wrapping it with a glass braided tape 6 impregnated with varnish for protection. be done.

However, in the above-mentioned example, the one shown in FIG. 1 has an insulating film 2 made of an organic material such as polyethylene, so this insulating film 2 is thick and difficult to bend in a small radius, and it is not suitable for a coil for a nuclear fusion device. I can't do it.

On the other hand, as shown in FIG. 2, when mica tape or glass tape is wrapped and cured with a thermosetting resin (for example, epoxy), the mica is relatively thick and hard, making it impossible to bend it after insulation.

The present invention was developed in view of the above-mentioned points, and its purpose is to enable easy winding even after insulation coating.
Moreover, it is an object of the present invention to provide a coil for a nuclear fusion device that can sufficiently withstand high voltage.

The present invention achieves the intended purpose by coating an electrical conductor with enamel coating, wrapping an electrical insulating film tape on it and heat-sealing it, and then wrapping a glass thread on top of it. They pretended to be distant relatives.

Hereinafter, the present invention will be explained based on the embodiments shown in the drawings.

FIG. 3 shows an embodiment of the present invention.

As shown in the figure, in this embodiment, an enamel film 8 is baked on the outer periphery of the conductor 7, and an insulating film 9, such as a polyimide (Kapton) film, is wrapped and heat-fused to form the insulating film. A glass thread 10 is wrapped around the glass thread 10 for protection.

In particular, in this embodiment, the enamel coating 8 is 0.06 mm thick, the polyimide (Kapton) film is 0.091 M4, and the glass coating is 0.15 mm, which are extremely thin insulating coatings.

With the configuration of this embodiment, winding after insulation is easy, and even though the insulation film is very thin, it can withstand high voltage.

In this example, it was possible to withstand a withstand voltage of 20 kV.

Furthermore, since the insulating film is thin, it is very suitable for use in places where the shape and size are restricted.

According to the coil for a nuclear fusion device of the present invention as described above, an electrical conductor is coated with enamel, an electrical insulating film tape is wrapped around the electrical conductor and heat fused, and a glass thread is further wound on the electrical conductor. Because of this structure, it can be easily wound even after being insulated, and it can withstand high voltage sufficiently.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a general insulated wire, FIG. 2 is a sectional view showing a conventional hardened coil, and FIG. 3 is a sectional view showing an embodiment of the present invention. 7... Conductor, 8... Enamel film, 9
...Insulating film, 10...Glass thread.

Claims (1)

[Scope of utility model registration request] A coil for a nuclear fusion device, characterized in that an electric conductor is coated with enamel, an electric insulating film tape is wrapped around the electric conductor and heat fused, and a glass thread is further wound on the electric conductor.