JPS604158Y2 - nuclear fusion device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a nuclear fusion device with an improved support structure for a toroidal coil.

There is a nuclear fusion device in which multiple toroidal coils are arranged radially, interlinked with a torus-shaped vacuum vessel.

A schematic diagram common to the conventional example and an embodiment of the present invention is shown in the first part.
As shown in Fig. and Fig. 2.

Figure 1 is a longitudinal sectional view of the right half of the same, Figure 2 is 174 of Figure 1.
FIG.

1 is a vacuum container, and 2 is a toroidal coil.

Since a strong electromagnetic force acts on the toroidal coil 2,
A wedge 3 is inserted between the toroidal coils 2 on the center side to support the electromagnetic force.

A poloidal coil 5 for controlling plasma (not shown) in the blanket 4 is arranged, and the poloidal coil 5 stacked up on the center side of the apparatus is supported by a support cylinder 7 with a support spacer 6 interposed therebetween.

Conventionally, it has been considered to simply insert the wedge 3, or to attach it to the support cylinder 7 with bolts 9 from the outer circumferential side of the wedge 3, as shown in FIG.

It is necessary that the wedge 3 is pressed against the toroidal coil 2 without any gaps, but if the wedge 3 is simply inserted, the wedge 3
It is difficult to fix the wedge 3, and the wedge 3 is out of place.
If a strong electromagnetic force is applied, the balance of forces will become uneven and the wedge 3 will become more misaligned, which may result in insufficient support for the electromagnetic force.

Therefore, it was considered to fix the wedge 3 to the support cylinder 7 with bolts 9 as shown in FIG. 1, and there is not enough work space, so even if the thickness of the wedge 3 that contacts the side of the toroidal coil 2 is made smaller and the work space is increased to the extent that it is on the outer periphery, it will not be possible to do so without using a device such as a manipulator. It is impossible to position and fix the wedge 3, and even if a manipulator is used, a manipulator with a large force cannot be used due to work space constraints.
It is difficult to adjust the distance between the wedges 3 and press both sides of the wedge 3 exactly against the toroidal coil 2.

Furthermore, since the wedge 3 becomes smaller, it does not touch the entire thickness of the toroidal coil 2, resulting in increased support surface pressure and insufficient support for electromagnetic force.

An object of the present invention is to provide a nuclear fusion device in which a wedge can be easily installed in a predetermined position and can sufficiently support the electromagnetic force of a toroidal coil.

An embodiment of the present invention will be described below with reference to FIG. 4.

Incidentally, the schematic diagrams of the apparatus are as shown in FIGS. 1 and 2, so please refer to these as well.

The wedge 3 inserted between the toroidal coils 2 is formed to have a thickness such that almost the entire surface comes into contact with the side surface of the toroidal coil 2, and is attached with bolts 9 before installing the toroidal coil 2, or after the toroidal coil 2 is installed. Insert the wedge 3 from above or below the device and attach it from the inner circumferential side with bolts 9.

For the bolt 9, make a hole 10 larger than the head of the bolt 9 in the support spacer 6 of the poloidal coil 5, provide a bolt insertion hole 11 in the support cylinder 7 at a position opposite to the hole 10, and insert the bolt insertion hole from the device center 12 side. 11 to draw the wedge 3 to the support cylinder 7, and then screw in the bolt 9 to fix the wedge 3.

In this way, the center part 12 of the apparatus has a space for a person to enter and work therein, so that the wedge 3 inserted between the toroidal coils 2 can be easily and strongly fixed.

Therefore, the distance between the toroidal coils 2 can be adjusted correctly, and the wedge 3 can be adjusted and installed at a predetermined position.

Further, since the size of the wedge 3 is approximately the same as the thickness of the side surface of the toroidal coil 2, the support surface pressure is averaged low, so that a strong electromagnetic force can be sufficiently supported.

This structure can be easily implemented by partially modifying the conventional structure.

Next, another embodiment will be described with reference to FIGS. 5 and 6.

In this case, the support cylinder 7 is installed on the inner circumferential side of the poloidal coil 5, and the other parts are as shown in FIGS. 4, 1, and 2 described above.
This is similar to the embodiment shown in the figure.

In the embodiment shown in FIG. 4, the wall thickness of the support cylinder 7 was limited due to the position of the poloidal coil 5, but in the embodiment shown in FIGS. Since it is installed on the circumferential side, the supporting cylinder 7 can be made thicker and stronger.

It should be noted that the present invention is not limited to the embodiments described above and shown in the drawings, and the present invention is not limited to the embodiments described above and shown in the drawings.
Of course, it can be implemented with various modifications.

As explained above, according to the present invention, the wedges inserted between the toroidal coils are formed to have a thickness such that almost the entire surface comes into contact with the side surfaces of the toroidal coils, and the wedges are fixed from the center side of the device. Therefore, the wedge can be easily firmly attached to a predetermined position, and the position relative to the toroidal coil can be adjusted so that it is in close contact with the toroidal coil without any gaps.The size of the wedge is also approximately the same as the thickness of the side of the toroidal coil. Because they are the same thickness, they can support powerful electromagnetic forces, making them highly reliable fusion devices.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view of the right half of a nuclear fusion device common to the conventional example and an embodiment of the present invention, FIG. 2 is a cross-sectional view of the 174 portion thereof, and FIG. Fig. 4 is an enlarged view of the structure of one embodiment of the present invention in the part corresponding to part A in Fig. 2, and Fig. 5 is an enlarged view of the vertical structure of the part corresponding to part A in Fig. 2. Fig. 5 is a right side view showing another embodiment. FIG. 6 is an enlarged cross-sectional view of the main part. DESCRIPTION OF SYMBOLS 1... Vacuum container, 2... Toroidal coil, 3... Wedge, 5... Poloidal coil, 6... Support spacer, 7... ... Support cylinder, 9 ... Bolt, 11 ... Bolt insertion hole, 12 ... Center part of the device.

Claims (3)

[Scope of utility model registration request] (1) In a nuclear fusion device in which a plurality of toroidal coils are arranged radially interlinked with a toroidal vacuum vessel, and a wedge is arranged between the toroidal coils on the center side, the wedge is approximately connected to the side surface of the toroidal coil. A core characterized in that it is formed to the same thickness, a support cylinder for a poloidal coil is arranged on the center side, a bolt insertion hole is provided in the support cylinder, and the wedge is drawn and fixed to the support cylinder by the bolt inserted through the hole. fusion device. (2) The nuclear fusion device according to claim 1, wherein the supporting cylinder of the poloidal coil is disposed on the outer peripheral side of the poloidal coil. (3) The nuclear fusion device according to claim 1, wherein the supporting cylinder of the poloidal coil is disposed on the inner peripheral side of the poloidal coil.