JPS60201280A - Poloidal coil for nuclear fusion device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to, for example, a voloidal coil for a torus-shaped nuclear fusion device, and particularly relates to an improvement in its structure.

FIG. 2 is a diagram and a plan view, and the nuclear fusion device includes a vacuum vessel L, a plurality of toroidal coils, a current transformer coil 3 which is also a voloidal coil, a control voloidal coil Hiroshi that controls the position of a plasma P, It consists of a current transformer core S, etc. The vacuum vessel l has a donut shape with a trapezoidal or circular cross section, and the plasma P is confined therein by magnetic fields in three directions: toroidal direction, voloidal direction, and radial direction. Plasma P
The heating causes an induced voltage in the plasma P by the current transformer core S and the current transformer coil 3 wound around it,
This is done by electric current.

Both the current transformer and the control voloidal coil 3゜Hori are each equipped with a lead wire on its conductor in order to support various operations of the fusion device. .

Parallel operation is now possible. For example, the seventh
As shown in Figures A and JB, the current transformer coil 3 consisting of C coils has an inner layer coil S and an outer layer coil S each having lead wires 6 and 7, both of which are ff, ? are laminated in the radial direction via insulators IO each covered with an insulator IO. The no-coils t and r inside and outside the cell are connected to lead wires 6 and 7 to enable both series and parallel operation.

As mentioned above, the voloidal coil 3゜hiro of the nuclear fusion device is
Inner layer coil and outer layer coil 9 stacked in the radial direction
It is composed of. Therefore, voloidal coil 3.4! If an attempt is made to reduce the radial thickness of the fusion device to make the entire fusion device smaller, the cross-sectional shape of the conductor of the voloidal coil J, 9' will change from a square to a vertical one, assuming the number of turns and withstand voltage are the same. It must be made into a flat shape, and the distance around the cross section of the conductor becomes longer, that is, the insulator 1
The ratio of zero to conductor will increase. As a result, the voloidal coils j and lI have the disadvantage that the conductor space factor is extremely reduced, making it impossible to downsize the entire fusion device.

[Summary of the invention]

This invention was made for the purpose of eliminating the above-mentioned drawbacks. By stacking a plurality of coiled conductors in the axial direction, it is possible to reduce the size of the conductor. It is possible to increase the cross-sectional area of the iron core and improve the magnetic performance of the current transformer coil.
The present invention provides a voloidal coil for a nuclear fusion device that can be switched between series and parallel operation.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a voloidal coil for a nuclear fusion device according to the present invention will be described below with reference to the drawings. No. FA.

are electrically independently stacked in the axial direction via the insulator /J. Both coils /I and /2 are provided with lead wires /u and 7g, respectively, and both coils //
, 7.2, both series and parallel operation are possible.

In the voloidal coil of the nuclear fusion device configured as described above, a margin is obtained in the radial dimension of the nuclear fusion device, and the space utilization efficiency is increased. As a result, when this is used, for example, in the current transformer coil 3, the cross-sectional area of the current transformer core 5 can be increased to improve the magnetic performance of the current transformer coil 3, or the toroidal coil λ can be This means that the entire nuclear fusion device can be made smaller. Also,
Regarding the cross-sectional shape of the conductor of fill /, 12, the first H
'HiT+i can be made close to a square with a short peripheral length, so the ratio of insulator/3 to conductor can be kept low, and voloidal coil 3. The conductor space factor of the conductor can be increased.

In addition, in the second example, two-layer voloidal coil J,
Although the J:l' combination of lI has been described, the present invention is not limited to this, and a plurality of coiled conductors such as 3 layers and 17 layers may be formed in the axial direction Kr[. Further, even if a plurality of coiled conductors are layered in each of the axial and radial directions (4 = Jt), the same effect as in the above embodiment can be obtained.

〔Effect of the invention〕

As described in Theory 1.114 above, according to the voloidal coil of the nuclear fusion device of the present invention, the entire device is For example, if this product is used in a current transformer coil, the cross-sectional area of the current transformer core can be increased without reducing the conductor space factor, and the magnetic field of the current transformer coil can be increased. It also has the effect of improving performance.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional torus-shaped fusion device, Fig. 2 is a plan view thereof, Fig. 3A is a plan view showing a conventional voloidal coil, Fig. 3B is a side view thereof, and Fig. 1A is a plan view thereof. A plan view showing one embodiment of the voloidal coil of the invention, and FIG. uB is a side view thereof. /...Vacuum vessel, Co...Toroidal coil, 3.'' Current transformer coil (Voloidal coil), φ Boloidal coil, S...Current transformer iron core, 6.7゜/41./k.・Leader wire, t...inner layer coil, 9@e outer layer coil, //
... Upper layer coil, 12... Lower layer coil, 10. /3...
Insulator, P...plasma. In each figure, the same reference numerals indicate the same or corresponding parts. Figure 2 2

Claims (1)

[Claims] In a voloidal coil for a nuclear fusion device in which a plurality of electrically independent coiled conductors are each provided with a lead wire that enables operation between the conductors in series or parallel, each of the conductors has the same diameter. A voloidal coil for a nuclear fusion device, which is characterized by being laminated in the axial direction.