JPH01141397A - Nuclear fusion device - Google Patents

Abstract

PURPOSE:To assure nondefectiveness even if a housing vessel is thin by constituting a superconducting toroidal field coil freely movable with respect to the housing vessel thereof and reinforcing the vicinity of the support thereof. CONSTITUTION:A vacuum vessel 2 and heat-insulated vacuum vessel 10 for confining plasma 1 are supported by vibrationproof supporting devices 14. A shear panel part 5 integrated to the superconducting toroidal field coil 5 and the heat-insulated vacuum vessel 10 are supported by vibrationproof supporting devices 15. Both ends of the vibrationproof supporting devices 14, 15 are connected like connecting bars by pinning to the vacuum vessel 2, the shear panel part 5 and the heat-insulated vacuum vessel 10 and are constructed freely rotatable. The vibrationproof supporting devices 14, 15 are disposed in plural sets at equal intervals in the circumferential direction thereof. Reinforcing rings 16, 17 are provided to the upper and lower outside circumferential positions of the heat-insulated vacuum vessel 10 in the aperture 11 of the vacuum vessel 10 and are connected to reinforcing columns 18, by which said devices are integrated to the floor surface part of a foundation 13. The vibrationproof supporting rigidity of the superconducting toroidal field coil is thereby obtd. even if the heat-insulated vacuum vessel is thin in shape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nuclear fusion device, and particularly to a nuclear fusion device that employs a superconducting toroidal magnetic field coil as a toroidal magnetic field coil.

[Conventional technology]

Generally, the toroidal magnetic field coil used in a nuclear fusion device is a normally conducting toroidal magnetic field coil made of copper or the like. Because this nuclear fusion device with a normal-conducting toroidal magnetic field coil has few structural restrictions, it is possible to take relatively free reinforcing measures in terms of seismic design, and a sound system design can be completed. was.

However, in recent years, due to the need for strong and high magnetic fields, nuclear fusion devices have been proposed that employ superconducting toroidal magnetic field coils made of superconductors as toroidal magnetic field coils. In a nuclear fusion device that uses this superconducting toroidal magnetic field coil, it is necessary to maintain the superconducting toroidal magnetic field coil at an extremely low temperature by cooling it with liquid helium, etc., so the entire device is housed in a huge insulated vacuum container. Since it is not possible to have a free structural design like when using normal conducting toroidal magnetic field coils, it is not possible to ensure sufficient soundness in terms of earthquake resistance.

A conventional nuclear fusion device using a superconducting toroidal magnetic field coil is schematically shown in FIGS. 6 and 6, and will be further explained using this.

In the figure, 1 is a plasma, and 2 is a vacuum container that confines the plasma 1, and is formed into a hollow annular body. 3 is a supporting leg of this vacuum container 2, with one end attached to the vacuum container 2;
The other end is connected to the foundation 13. Reference numeral 4 denotes superconducting toroidal magnetic field coils, which are made of a superconductor, surround the vacuum vessel 2, and are arranged in plural pieces at predetermined intervals in the circumferential direction of the torus. Reference numeral 5 denotes a shear panel section that connects the superconducting toroidal magnetic field coils 4 arranged in the circumferential direction of the torus, and is formed integrally with the superconducting toroidal magnetic field coils 4, and is located between adjacent superconducting toroidal magnetic field coils 4 in the circumferential direction of the torus. form a sector divided by parts. A central column 6 supports the electromagnetic force generated in the superconducting toroidal magnetic field coil 4, and is cooled together with the superconducting toroidal magnetic field coil 4 by liquid helium to a cryogenic state. 7 and 8 are adiabatic support columns, and the adiabatic support column 7 has one end connected to an extremely low temperature superconducting toroidal magnetic field coil 4;
The heat-insulating support columns 8 have one end connected to the center column 6, and the other ends connected to the foundation 13 through the bottom of a heat-insulating vacuum container 10 which is at room temperature and prevents heat from entering the superconducting toroidal magnetic field coil 4. ing. Reference numeral 9 denotes a thermal anchor provided between the support legs 7 and 8, which is cooled by liquid nitrogen and is used to remove heat that enters from the normal temperature range. The left half of FIG. 6 shows a cross section at a position including the superconducting toroidal magnetic field coils 4, and the right half shows a cross section at an intermediate portion between adjacent superconducting toroidal magnetic field coils 4. In this position, the vacuum vessel 2 that confines the plasma 1 is extended in the radial direction into a nozzle-like shape between the superconducting toroidal magnetic field coils 4, and its tip forms an opening 11, in which incidental equipment (not shown) is installed. A manhole etc. for attachment and access to the inside of the vacuum container 2 is provided. The left half of FIG. 7 shows a cross section at the upper position of the superconducting toroidal magnetic field coil 4 in the longitudinal section of FIG. 6, and the right half shows a cross section at a position including the plasma 1. In this figure, 12 is a bellows that connects the vacuum container 2 and the insulating vacuum container 10, and absorbs thermal expansion due to temperature rise of the vacuum container 2. Reference numeral 13 denotes a key for connecting the shear panel 5 that connects the superconducting toroidal magnetic field coils 4 to each other at divided portions in the circumferential direction of the torus, whereby the entire superconducting toroidal magnetic field coil is connected and integrated.

Regarding nuclear fusion devices using superconducting coils, for example, JP-A-59-37486, JP-A-56-723,
It is disclosed in Publication No. 90 and the like.

[Problem that the invention seeks to solve]

Super 'I\' configured like this! In a fusion device equipped with a dedicated toroidal magnetic field coil 4, the huge structure undergoes a wide range of temperature changes, resulting in its thermal expansion.

A support system must be constructed that can absorb shrinkage, which is subject to temperature changes down to the extremely low temperatures of liquid helium, and the shrinkage at this time can reach tens of degrees at the support legs.

Further, the vacuum vessel 2 that confines the plasma 1 also reaches a high temperature during operation and baking, and therefore undergoes thermal expansion of several tens of millimeters. In order to absorb these thermal deformations, the support legs are designed to be flexible so that they can escape, or methods have been adopted to allow them to escape by sliding.

Furthermore, in the cryogenic superconducting toroidal magnetic field coil 4, in order to block heat from entering the cryogenic region from the outside, the supporting legs of the device must be constructed as highly hierarchical structures with thermal resistance. Therefore, it is necessary to design the cross-sectional area of the supporting legs to be as small as possible. Therefore, large support rigidity cannot be obtained from these points as well. Furthermore, in a device equipped with a superconducting toroidal magnetic field coil 4, the entire device is housed in a heat insulating vacuum container 10 to block intrusion heat. For this reason, the method of supporting the device is generally limited to the bottom of the insulated vacuum container 10, and it is difficult to effectively support the device from surrounding buildings.

Due to these problems, the natural frequency of the support system as a whole decreases, which makes it more likely to resonate with seismic waves, resulting in a lack of earthquake resistance.
It is not possible to ensure sufficient soundness in terms of earthquake resistance.

The present invention has been made in view of the above points, and its first objective is to obtain sufficient seismic support rigidity and ensure soundness even when superconducting toroidal magnetic field coils are adopted. In addition to the first objective, the second objective is to provide a nuclear fusion device that can be used even if the insulated vacuum vessel has a thin wall shape.

[Means for solving problems]

The present invention includes a hollow annular vacuum vessel in which plasma is confined and supported on a foundation via support legs;
surrounding this vacuum container, and.

A plurality of superconducting toroidal magnetic field coils are arranged at predetermined intervals in the circumferential direction of the torus, and each is supported by a foundation via an insulating support column, and each is moved in the horizontal direction by a support device to an insulated vacuum container that houses them. In the case where each of the superconducting 1-loidal magnetic field coils is coupled and supported by a shear panel, the first purpose is achieved by movably supporting the shear panel in an insulated vacuum container with a support device, and In addition to the above configuration, a second
It was designed to achieve each of the objectives.

[Effect]

With the above configuration, the vacuum vessel and the superconducting toroidal magnetic field coil can obtain effective rigidity without restricting thermal deformation, so sufficient vibration-proof support rigidity can be obtained to ensure soundness, and the reinforcing ring is used to insulate the vacuum vessel. Since it is reinforced on the outer periphery side, it is possible even if the insulated vacuum container has a thin wall shape.

〔Example〕

The present invention will be described in detail below based on an embodiment shown in one drawing. Incidentally, the same reference numerals are used for the same parts as in the past.

FIG. 1 and FIG. 2 show an embodiment of the nuclear fusion device of the present invention. Since its schematic configuration is almost the same as the conventional one, detailed explanation will be omitted here.

As shown in the figure, in this embodiment, a vacuum vessel 2 that confines plasma 1 and a heat insulating vacuum vessel 10 are supported by a vibration isolating support device 14, and a shear panel portion 5 integrated with a superconducting toroidal magnetic field coil 4 and a heat insulating vacuum vessel 10 are supported. The container 10 is also supported by an anti-vibration support device 15. Although this embodiment will be described in detail later, both ends of each vibration isolating support device 14 and 15 are connected to the vacuum container 2. Shear panel section 5 and insulated vacuum container 10
This is the case of a connecting rod that is connected with a pin.

Anti-vibration support device 1f14 in this embodiment. ．． 15 are arranged in the tangential direction perpendicular to the center line connecting the connection point with the vacuum vessel 2 and the shear panel part 5 and the center of the torus, with one end connected to the vacuum vessel 2 and the shear panel part 5, and the other end connected to the vacuum vessel 2 and the shear panel part 5. It is coupled to an insulated vacuum container 1o. A plurality of sets of the vibration isolating support devices 14 and 15 are arranged at substantially equal intervals in the circumferential direction, and all have the same structure and are arranged in the same direction. Furthermore, in this embodiment, reinforcing rings 16 and 17 are provided at the outer periphery of the lower part above the opening 11 of the vacuum container 2 of the insulating vacuum container 10, and the upper and lower reinforcing rings 16 and 17 are reinforced on both sides of the opening 11. The reinforcing ring 16 at the lower part of the opening 11 is connected by the pillar 18 and is integrated with the floor part of the foundation 13.

Next, the operation in this embodiment will be explained. FIG. 3 is a skeleton representation of the operation of the vibration isolating support device 14, 15 in the configuration of the present embodiment described above, and in the figure, the same reference numerals as in FIGS. 1 and 2 indicate the same members.

As mentioned above, the seismic problem with fusion devices equipped with superconducting toroidal magnetic field coils is that the vertical support mechanism that supports the structures that make up the fusion device prevents horizontal thermal deformation of the structures. This was because the horizontal rigidity was insufficient to avoid binding. Therefore, in order to solve this problem, it is necessary to provide a support mechanism that directly supports horizontal forces in the horizontal direction, and that has effective rigidity without restricting thermal deformation.

In FIG. 3, attachment point A is a connection point between the vacuum container 2 or shear panel section 5 and one end of the vibration isolation support device 14 or 15, and attachment point B is the connection point between the insulating vacuum container 10 and the vibration isolation support device 14,
Or it is a connection point with one end of 15. Typically, in a torus-type fusion device, the immovable reference point for temperature changes is located at the center of the torus. Therefore, the displacement of the attachment point A when the temperature changes will move in the radial direction on the line connecting the l--ras center and the attachment point A. Further, on a circumference having the same radius, as long as the temperature distribution in the circumferential direction is uniform, the displacement is the same at any position in the circumferential direction.

The vibration isolating support device 14.15 is rotatably connected in the form of a connecting rod with a pin connection, with the attachment point A as the movable end and the attachment part B as the fixed end, so that the locus of the movable attachment point A follows the fixed attachment point. It exists on the circumference of a circular arc with B as the center and the length Qs of the vibration isolating support device 14.15 as the radius. If the length Qs of the anti-vibration support device 14 and 15 is made sufficiently long with respect to the displacement δ of the movable attachment point A, each rotation angle of the anti-vibration support device [14 and 15 is extremely small, so the movable attachment point In practical terms, the locus of point A can be treated as a straight line. Therefore, if the fixed attachment point B of the anti-vibration support device 14.15 is provided on a line that is perpendicular to the line connecting the torus center and the movable attachment point A, the locus of the movable attachment point A can be practically moved with the torus center. There is no problem even if it exists on the line connecting the attachment point A. In this way, the anti-vibration support device 5114.1 in this embodiment
5 does not restrict thermal deformation of the vacuum vessel 2 or the superconducting toroidal magnetic field coil 4.

Next, the effect on seismic force will be explained. As mentioned above, a plurality of sets of vibration-proof supports [14, 15 in this embodiment are arranged on the circumference of the torus. On the other hand, the vacuum container 2 and the shear panel portion 5 form an annular body that is firmly connected in the torus direction, and the rigidity of the annular body itself is sufficiently rigid. If the rigidity of these annular bodies is sufficiently rigid, the vibration isolating support device for suppressing horizontal vibrations of the annular bodies will function no matter where in the direction of suppression the vibration isolating support device is disposed on the annular bodies. That is, the vibration isolating support device [14, 1
5 has the effect of suppressing vibration in a direction parallel to it. Three or more sets of anti-vibration support devices equally spaced on the circumference 14.15
If placed, by the gold component of their suppressive force,
It has an equal suppression function in any horizontal direction. In this case, the rigidity of the vibration isolating support device 14, 15 is simply the tensile and compressive rigidity in the axial direction of the connecting rod.
Sufficient rigidity can be easily achieved by appropriately selecting the cross-sectional area relative to the length. In this way, the configuration of the vibration isolating support devices 14 and 15 of this embodiment allows thermal deformation to escape without being restrained at all, while providing support rigidity that is effective for improving earthquake resistance. be.

As described above, the vibration isolating support device of this embodiment is extremely effective, but in order to make it even more effective, the following measures have been added to this embodiment.

In this embodiment, one end of the vibration isolating support device 14, 15 is connected to the insulating vacuum container 1o, but since the insulating vacuum container 10 has an extremely large thin-walled cylindrical shape, a load is applied to the cylindrical portion in an arcuate manner. When this occurs, local deformation tends to occur in the cylindrical portion. This local deformation ultimately controls the rigidity of the entire vibration isolating support device, making it difficult to ensure the necessary support rigidity. Therefore, when implementing the above-described configuration, effective reinforcement is required to prevent local deformation of the insulating vacuum container 10.

The reinforcing rings 16, 17 shown in FIGS. 1 and 2 have this function, and the fixed support points B are respectively provided close to the reinforcing rings 16, 17 and act locally. This is to distribute the horizontal load over the entire insulated vacuum vessel 10, prevent local deformation, and ensure effective rigidity. Furthermore, in this embodiment, the reinforcing ring 16 at the lower position is in contact with or buried in the floor surface of the foundation 13, and is integrated with the floor surface, thereby achieving a more effective reinforcing effect and improving rigidity. In addition, for the load transmitted to the reinforcing ring 17 at the upper position, a reinforcing column 18 is provided to connect the upper and lower reinforcing rings 16 and 17.
The section was reinforced. This portion forms a hollow box-shaped cross section together with the wall surface of the cylindrical portion of the heat insulating vacuum container 10, and has great rigidity.

In addition, since the vacuum container 2 is sufficiently rigid both in the circumferential direction and in the height direction, the installation position in the height direction of the vibration isolating support device 14 that supports the vacuum container 2 is determined at both the upper end and the lower end. However, there is no practical problem. On the other hand, the optimal installation position of the vibration-proof support system [15] that supports the superconducting toroidal magnetic field coil 4 is
Determined by the mass distribution of the coil. When the shear panel part 5 is included, its main mass is distributed at the positions of the upper and lower shear panel parts 5, and the superconducting toroidal magnetic field coil main body part connecting therebetween forms a relatively weak columnar shape. Therefore, it is preferable to configure the shear panel portion 5 to be directly supported by being distributed at two locations, upper and lower. Taking this into consideration, it should be noted that the rigidity of the insulating vacuum vessel 10 side is greater on the lower reinforcing ring 16 side than on the upper reinforcing ring 17 side, and the vibration isolating support device 14 of the vacuum vessel 2 is installed on the lower side. However, it is appropriate that the vibration isolating support devices 15 for the superconducting toroidal magnetic field coil 4 be provided at two locations, upper and lower. Furthermore, in this embodiment, some improvements have been made to the specific structure of the vibration isolating support devices 14 and 15. In the above description, the anti-vibration support device 1
4.15 assumes that there is no temperature change itself and that its length ns does not change. With the vibration isolation support device 14 for the vacuum container 2, the temperature rise in the vacuum container 2 is not so high, and the joints can be sufficiently cooled, so it can be considered that there is no temperature change in practical terms. . but,
In the vibration isolation support device 15 of the superconducting toroidal magnetic field coil 4, it is necessary to eliminate as much as possible the heat that penetrates into the superconducting coil system, which is at room temperature or at an extremely low temperature, so the vibration isolation support device itself is actively cooled with liquid nitrogen or the like. As a result, the length As of the vibration isolating support device 15 is subject to a large change, so it is necessary to take a configuration that compensates for this. FIG. 4 shows an example of this configuration, and FIG. 5 explains its operation. As shown in the figure, the vibration isolating support devices 15 supporting the superconducting toroidal magnetic field coil 4 are arranged in two sets of vibration isolating support devices [15A and 15B are combined, One end of each of them is commonly pin-coupled at a common attachment point C, and furthermore, this coupling pin is connected to an engagement groove 19 provided in the heat-insulating vacuum container 10.
The engagement grooves 19 are arranged in parallel to a line passing through the center of the torus. The operation of this configuration will be explained with reference to FIG. Attachment point A1 on the superconducting toroidal magnetic field coil 4 side. When A2 receives a temperature change, it moves on the line connecting that point and the center 0 point of the torus, and the attachment point AI and A2 move to the point A I' l A 2'. Anti-vibration support fil 15 A.

If the length of 15B is configured the same, then AI.

Ax and the 0 point form an isosceles triangle with the 0 point as the apex. Points AI and A2 are located on the same radius and undergo the same temperature change, so their movement amounts are the same. Therefore, if the vibration isolating support devices 15A and 15B undergo the same temperature change, their lengths will be the same regardless of the temperature, so the positions C' and A1'HAz' after the movement of the 0 point will be the same.
The triangle formed by C' forms an isosceles triangle with the apex at C', and C' moves on the line connecting the 0 point and the torus center point. In this way, according to this configuration, even if the vibration isolating support device 15 is subjected to temperature changes, the deformation is compensated for, and the vibration isolating device 15 is sufficiently rigid against earthquakes without restricting the thermal deformation of the superconducting toroidal magnetic field coil 4. A support device is obtained. Further, in this configuration, the vibration isolating support devices 15A, 15
Since it is not necessary to arrange B precisely in the tangential direction, there is an effect that a large degree of freedom can be obtained in the design of the installation, and this is extremely practical.

In the description of this configuration, a case has been described in which the anti-vibration support device 15 is pin-coupled to the side of the movable attachment point A, and the support device engagement groove 19 is provided on the side of the fixed attachment point.

Functionally, this can be reversed so that the movable attachment point side is provided at one location and the support device engagement groove 19 is provided, and the fixed attachment side is configured to be connected by pins at two attachment points forming a pair. It's the same.

〔Effect of the invention〕

According to the nuclear fusion device of the present invention described above, there is a hollow annular vacuum vessel in which a plasma is confined and which is supported on the foundation via support legs, and a vacuum vessel that surrounds the vacuum vessel and is arranged in the circumferential direction of the torus. A plurality of superconducting toroidal magnetic field coils are arranged at predetermined intervals on the ground, and each of them is supported on the foundation via an insulating support column. Furthermore, when each of the superconducting toroidal magnetic field coils is coupled and supported by a shear panel, the shear panel is supported movably in the horizontal direction by a support device in an insulated vacuum container, so thermal deformation can be restrained. Therefore, if sufficient vibration-proof support rigidity is obtained and soundness is ensured, the same effect as described above can be obtained even if the insulated vacuum vessel has a thin wall shape, and this type of fusion device It is very effective when used in

[Brief explanation of the drawing]

FIG. 1 is a diagram corresponding to FIG. 6 showing an embodiment of the nuclear fusion device of the present invention, FIG. 2 is a cross section of FIG. 1, a diagram corresponding to FIG. 7, and FIG. FIG. 4 is a skeleton diagram showing the basic operation of the anti-vibration support device in one embodiment of the invention. FIG. 4 is a skeleton diagram showing another example of the anti-vibration support device.
The figure is an explanatory diagram to explain the 93 work in Figure 4. Figure 6 shows a conventional nuclear fusion device. The left half is a cross section at a position including the superconducting toroidal magnetic field coil, and the right half is a superconducting toroidal magnetic field adjacent to each other. A longitudinal sectional view taken at the middle part of the coil,
FIG. 7 shows a cross-sectional view of FIG. 6, with the left half being a cross-sectional view at an upper position of the superconducting toroidal magnetic field coil, and the right half being a cross-sectional view at a position containing plasma. DESCRIPTION OF SYMBOLS 1... Plasma, 2... Vacuum container, 3... Support leg, 4... Superconducting toroidal magnetic field coil, 5... Shear panel part, 6... Center column, 7, 8... Heat insulation support column , 9・
...Thermal anchor, 10...Insulated vacuum container, 11
...Opening, 13...Foundation, 14, 15.15A,
15B... Anti-vibration support device, 16.17... Reinforcement ring, 1
8...Reinforcement column, Figure 1 14-, I5

Claims (1)

[Claims] 1. A hollow annular vacuum container in which plasma is confined and supported by support legs on a foundation, and a vacuum container surrounding the vacuum container and having a predetermined interval in the circumferential direction of the torus. a superconducting toroidal magnetic field coil in which a plurality of superconducting toroidal magnetic field coils are arranged and each supported on a foundation via a heat insulating support column;
In a nuclear fusion device comprising the superconducting toroidal magnetic field coil and an insulating vacuum vessel that houses the vacuum vessel, each of the superconducting toroidal magnetic field coil and the vacuum vessel is supported horizontally movably by a support device in the insulating vacuum vessel. A nuclear fusion device characterized by: 2. The support device includes at least three movable attachment portions provided at approximately equal pitches on each of the outer periphery of the superconducting toroidal magnetic field coil and the vacuum vessel, and a line connecting the movable attachment portions and the center of the torus. and a connecting member that connects the fixed attachment part and the movable attachment part. A nuclear fusion device according to scope 1. 3. The nuclear fusion device according to claim 2, wherein the movable attachment part and the connecting member, and the fixed attachment part and the connecting member are rotatably connected by a pin. 4. The core according to claim 3, characterized in that an engagement groove is provided in either the movable attachment part or the fixed attachment part, and the pin is slidably engaged in the engagement groove. fusion device. 5. A hollow annular vacuum container in which plasma is confined and supported by support legs on the foundation, and a plurality of vacuum containers surrounding the vacuum container and arranged at predetermined intervals in the circumferential direction of the torus. and superconducting toroidal magnetic field coils, each of which is supported on the foundation via adiabatic support columns;
A core comprising: a shear panel installed in a torus shape for coupling and supporting each of the superconducting toroidal magnetic field coils; and an insulating vacuum container housing the superconducting toroidal magnetic field coils each coupled and supported by the shear panel and the vacuum container. A nuclear fusion device characterized in that a shear panel and a vacuum container that couple and support each of the superconducting toroidal magnetic field coils are each supported by a support device in the insulating vacuum container so as to be movable in the horizontal direction. 6. The support device includes at least three movable attachment portions provided at approximately equal pitches on each of the shear panel and the outer periphery of the vacuum vessel, and a torus cutting line with respect to a line connecting the movable attachment portions and the center of the torus. Claim 5, characterized in that it is comprised of a fixed mounting part provided on the insulating vacuum container on a line perpendicular to the direction, and a connecting member connecting the fixed mounting part and the movable mounting part. Nuclear fusion device as described in section. 7. The nuclear fusion device according to claim 6, wherein the movable attachment portion and the connecting member, and the fixed attachment portion and the connecting member are rotatably connected by a pin. 8. The core according to claim 7, characterized in that an engagement groove is provided in either the movable attachment part or the fixed attachment part, and the pin is slidably engaged in the engagement groove. fusion device. 9. The shear panel is formed integrally with the superconducting toroidal magnetic field coil, and is divided into a plurality of sectors along the circumferential direction of the torus to form a sector shape. nuclear fusion device. 10. The dividing portion of the shear panel in the middle in the circumferential direction of the torus is located at an intermediate portion between the phase-adjacent superconducting toroidal magnetic field coils, and the adjacent shear panels are integrally connected by a key at the dividing portion. A nuclear fusion device according to claim 9. 11. A hollow annular vacuum container in which plasma is confined and supported by support legs on a foundation, and a plurality of vacuum containers surrounding the vacuum container and arranged at predetermined intervals in the circumferential direction of the torus. In addition, superconducting toroidal magnetic field coils each supported on the foundation via a heat insulating support pillar, a shear panel installed in a torus shape to couple and support each of the superconducting toroidal magnetic field coils, and each coupled and supported by the shear panel. In a nuclear fusion device comprising a superconducting toroidal magnetic field coil and an insulating vacuum vessel housing the vacuum vessel, a shear panel and a vacuum vessel that couple and support each of the superconducting toroidal magnetic field coils are each supported in the insulating vacuum vessel. A nuclear fusion device, characterized in that the device supports the insulating vacuum container so as to be movable in the horizontal direction, and the outer peripheral side of the insulating vacuum container near the support portion is reinforced with a reinforcing ring. 12. The support device includes at least three movable attachment portions provided at approximately equal pitches on each of the shear panel and the outer periphery of the vacuum vessel, and a torus cutting line with respect to a line connecting the movable attachment portions and the center of the torus. Consisting of a fixed mounting part provided on the insulating vacuum container on a line perpendicular to the direction, and a connecting member connecting the fixed mounting part and the movable mounting part,
12. The nuclear fusion device according to claim 11, wherein the reinforcing ring is installed on the outer peripheral side of the heat insulating vacuum container near where the fixed attachment part is located. 13. The nuclear fusion device according to claim 12, wherein the movable attachment part and the connecting member, and the fixed attachment part and the connecting member are rotatably connected by a pin. 14. The core according to claim 13, characterized in that an engagement groove is provided in either the movable attachment part or the fixed attachment part, and the pin is slidably engaged in the engagement groove. fusion device. 15. Another reinforcing ring is installed on the outer periphery of the foundation floor of the insulating vacuum container, and the reinforcing ring is integrated with the foundation floor.
The nuclear fusion device according to item 2. 16. The nuclear fusion device according to claim 15, wherein the reinforcing ring and the reinforcing ring integrated with the foundation floor are connected by a reinforcing column.