A toroidal field coil fixing device and a tokamak device

Abstract

This application relates to the field of nuclear fusion technology, specifically a toroidal field coil fixing device and a tokamak device. The toroidal field coil fixing device includes an upper fixing ring, a lower fixing ring, a clamping connecting device, and a diagonal brace. The upper and lower fixing rings are located at the upper and lower ends of the toroidal field coil, respectively. The upper and lower fixing rings are connected to the toroidal field coil via the clamping connecting device. The diagonal brace is positioned between the upper and lower fixing rings. Compared with existing technologies, the toroidal field coil fixing device and tokamak device proposed in this application can effectively withstand the expansion force and overturning force of the coil, avoiding radial expansion deformation and tangential torsional deformation of the toroidal field coil.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear fusion, in particular to a toroidal field coil fixing device and a tokamak device. BACKGROUND

[0002] The tokamak device is a toroidal vessel for realizing controlled nuclear fusion by magnetic confinement, which contains various types of electromagnetic coils, such as toroidal field coils, poloidal field coils, etc. The toroidal field coils (TF coils) of the tokamak device are usually composed of multi-handle coils, which need to withstand considerable expansion force and overturning force during operation, and should be reliably fixed to avoid large deformation or even damage of the coils under the action of electromagnetic force.

[0003] In the prior art, there are some common toroidal field coil fixing structures. The first kind of tokamak device coil fixing structure occupies most of the top and bottom space of the device, affecting the arrangement of the vacuum chamber window. A large number of columns need to be arranged on the side to resist overturning.

[0004] Another tokamak device connects each coil into a whole through a connecting plate, which can effectively withstand the expansion force of the coil, but the connecting surface is large, affecting the arrangement of the vacuum chamber window; the shell of the coil needs to be designed to be quite strong to transmit the overturning force.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The present application aims to provide a toroidal field coil fixing device and a tokamak device to solve the technical problem that the toroidal field coil in the current tokamak device produces radial expansion deformation and tangential torsional deformation under the action of electromagnetic force during operation, affecting the normal operation of the whole device.

[0007] To achieve one of the above purposes, the present application provides the following technical solutions:

[0008] A toroidal field coil fixing device, comprising an upper fastening ring, a lower fastening ring, a clamping connecting device and an inclined strut, the upper fastening ring and the lower fastening ring are respectively located at the upper end and the lower end of the toroidal field coil, the upper fastening ring and the lower fastening ring are respectively connected with the toroidal field coil through the clamping connecting device, and the inclined strut is arranged between the upper fastening ring and the lower fastening ring.

[0009] Further, the clamping connecting device comprises an inner clamping block and an outer clamping block, the inner clamping block and the outer clamping block clamp the toroidal field coil after being connected by screws.

[0010] Further, the inner clamping block and the two side faces of the outer clamping block are provided with a top screw hole, and a top screw is arranged in the top screw hole to make the two side faces of the inner clamping block and the outer clamping block tightly fit the toroidal field coil.

[0011] Further, a fixing plate is arranged between the outer clamping block and the upper fastening ring and the lower fastening ring, and the outer clamping block is connected with the upper fastening ring and the lower fastening ring through the fixing plate.

[0012] Further, the inclined struts are uniformly arranged between the upper fastening ring and the lower fastening ring, and a triangular stable structure is formed between adjacent inclined struts and the upper fastening ring or the lower fastening ring.

[0013] Further, the midpoint of the inclined strut coincides with the midpoint of the toroidal field coil in the height direction.

[0014] Further, the upper fastening ring and the lower fastening ring are formed by a plurality of fastening ring blocks which are spliced with each other.

[0015] Further, an insulating pad is arranged at the spliced position of the fastening ring blocks.

[0016] Further, a stand is connected to the bottom of the lower fastening ring.

[0017] To achieve the above-mentioned second purpose, the application provides the following technical scheme:

[0018] A tokamak device comprises the toroidal field coil fixing device as described above.

[0019] Compared with the prior art, the toroidal field coil fixing device and the tokamak device provided by the application can effectively bear the expansion force and the overturning force of the coil, and avoid the expansion deformation of the coil in the radial direction and the torsional deformation of the coil in the tangential direction. In addition, the inclined struts of the application are non-magnetic metal pipes which are uniformly arranged between the upper fastening ring and the lower fastening ring and form a triangular stable structure together with the fastening ring, thereby simply and effectively achieving torque transmission.

[0020] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 A structure schematic diagram of a toroidal field coil fixing device provided by an embodiment of the present application.

[0023] Figure 2 A connection structure schematic diagram of a toroidal field coil and a clamping connecting device in a toroidal field coil fixing device provided by an embodiment of the present application.

[0024] Figure 3 A connection structure schematic diagram of a fastening ring sub-block in a toroidal field coil fixing device provided by an embodiment of the present application.

[0025] Figure 4 A structure schematic diagram of a tokamak device provided by an embodiment of the present application.

[0026] Figure 5 A structure schematic diagram of a toroidal field coil in a tokamak device provided by an embodiment of the present application.

[0027] The schematic diagram is as follows:

[0028] 100, toroidal field coil fixing device; 200, toroidal field coil; 300, vacuum chamber; 400, connecting rod.

[0029] 110, upper fastening ring; 120, lower fastening ring; 130, inclined strut; 140, stand; 150, clamping connecting device.

[0030] 111, fastening ring sub-block; 112, insulating pad plate.

[0031] 151, inner clamping block; 152, outer clamping block; 153, screw; 154, jackscrew hole; 155, fixing plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] As Figure 1As shown in the embodiment of this application, a circumferential field coil fixing device 100 includes an upper fastening ring 110, a lower fastening ring 120, a clamping connecting device 150, and a diagonal support rod 130. The upper fastening ring 110 and the lower fastening ring 120 are respectively located at the upper end and lower end of the circumferential field coil 200. Specifically, the upper end and the lower end of the circumferential field coil 200 can be located at the highest point and the lowest point of the circumferential field coil 200, or they can be located at any position between the midpoint and the highest and lowest points in the height direction of the circumferential field coil 200. The upper end and the lower end can be symmetrically arranged with respect to the midpoint direction in the height direction of the circumferential field coil 200, or they can be asymmetrically arranged. The upper fastening ring 110 and the lower fastening ring 120 are connected to the circumferential field coil 200 through the clamping connecting device 150, and the diagonal support rod 130 is disposed between the upper fastening ring 110 and the lower fastening ring 120. In this embodiment, the upper fastening ring 110 and the lower fastening ring 120 are welded from non-magnetic metals and are used to restrict the expansion of the circumferential field coil 200 along the diametrical direction. At the same time, the upper fastening ring 110 and the lower fastening ring 120 connect the upper and lower ends of the multi-spindle circumferential field coil 200 into a whole, and convert the overturning force of the single-spindle coil into the torsion between the upper fastening ring 110 and the lower fastening ring 120.

[0034] like Figure 5 As shown, the tokamak device provided in this embodiment has eight toroidal field coils 200. The upper and lower ends of adjacent toroidal field coils 200 are connected by connecting rods 400. During operation, under the influence of electromagnetic force, they undergo not only radial expansion but also tangential overturning. If the toroidal field coils 200 are not adequately fixed, they will expand radially and twist tangentially, affecting the normal operation of the entire tokamak device. Therefore, the toroidal field coil fixing device 100 effectively supports the expansion and overturning forces of the tokamak device, preventing radial expansion and tangential twisting. Of course, in other embodiments of this application, the toroidal field coils 200 of the tokamak device are not limited to eight coils; other numbers of toroidal field coils 200 are also within the scope of protection of this application.

[0035] In the circumferential field coil fixing device 100 provided in this application embodiment, the diagonal brace 130 is a non-magnetic metal tube, which is evenly arranged between the upper fastening ring 110 and the lower fastening ring 120 to balance the torque between the upper and lower fastening rings 120. The diagonal brace 130, together with the upper fastening ring 110 and the lower fastening ring 120, forms a triangular stable structure, which simply and effectively realizes torque transmission. In addition, the midpoint of the diagonal brace 130 coincides with the midpoint of the height direction of the circumferential field coil 200. Therefore, by placing the upper fastening ring 110 and the lower fastening ring 120 at the upper and lower ends of the coil, the whole is ring-shaped, which minimizes the impact on the function of other components of the tokamak device, such as the windows on the top and sides of the vacuum chamber 300. At the same time, when the diagonal brace 130 is arranged, the midpoint of the diagonal brace 130 coincides with the midpoint of the height direction of the circumferential field coil 200, which minimizes the impact of the diagonal brace 130 on the outer window of the vacuum chamber 300.

[0036] like Figure 2 As shown in the embodiment of this application, a toroidal field coil fixing device 100 includes a clamping connection device 150 comprising an inner clamping block 151 and an outer clamping block 152. The inner clamping block 151 and the outer clamping block 152 are connected by screws 153 to achieve a tight radial connection with the toroidal field coil 200. Furthermore, set screw holes 154 are provided on both sides of the inner clamping block 151 and the outer clamping block 152, and set screws are provided in the set screw holes 154 to ensure that the two sides of the inner clamping block 151 and the outer clamping block 152 are tightly fitted with the toroidal field coil 200. This application ensures reliable transmission of force and displacement through the tight connection between the inner clamping block 151 and the outer clamping block 152 and the toroidal field coil 200. Even small forces and displacements are transmitted to the clamping connection device 150, effectively reducing the deformation of the toroidal field coil 200. Meanwhile, in the above embodiments of this application, a fixing plate 155 is provided between the outer clamping block 152 and the upper fastening ring 110 and the lower fastening ring 120, and the outer clamping block 152 is connected to the upper fastening ring 110 and the lower fastening ring 120 through the fixing plate 155.

[0037] In the circumferential field coil fixing device 100 provided in this application embodiment, there are two sets of upper clamping connecting devices 150 and two sets of lower clamping connecting devices 150. The two sets of upper clamping connecting devices 150 or the two sets of lower clamping connecting devices 150 are respectively disposed at both ends of the connecting rod 400 of the circumferential field coil 200.

[0038] like Figure 3As shown, the upper fastening ring 110 and the lower fastening ring 120 are both formed by splicing a plurality of fastening ring blocks 111, so that the upper fastening ring 110 and the lower fastening ring 120 are divided into blocks, facilitating the transportation and installation of the whole tokamak device. Meanwhile, under the action of the electromagnetic field, the upper fastening ring 110 and the lower fastening ring 120 will generate eddy current, which will affect the operation of the tokamak device, so in order to avoid the generation of eddy current in the upper fastening ring 110 and the lower fastening ring 120, the insulating pads 112 are arranged between the fastening ring blocks 111, and in the present application, the number of the insulating pads 112 is at least one set of adjacent fastening ring blocks 111.

[0039] As shown in the figure, Figure 1 As shown, the upper fastening ring 110 and the lower fastening ring 120 are both formed by splicing a plurality of fastening ring blocks 111, so that the upper fastening ring 110 and the lower fastening ring 120 are divided into blocks, facilitating the transportation and installation of the whole tokamak device. Meanwhile, under the action of the electromagnetic field, the upper fastening ring 110 and the lower fastening ring 120 will generate eddy current, which will affect the operation of the tokamak device, so in order to avoid the generation of eddy current in the upper fastening ring 110 and the lower fastening ring 120, the insulating pads 112 are arranged between the fastening ring blocks 111, and in the present application, the number of the insulating pads 112 is at least one set of adjacent fastening ring blocks 111.

[0040] As shown in the figure, Figure 4 As shown, the upper fastening ring 110 and the lower fastening ring 120 are both formed by splicing a plurality of fastening ring blocks 111, so that the upper fastening ring 110 and the lower fastening ring 120 are divided into blocks, facilitating the transportation and installation of the whole tokamak device. Meanwhile, under the action of the electromagnetic field, the upper fastening ring 110 and the lower fastening ring 120 will generate eddy current, which will affect the operation of the tokamak device, so in order to avoid the generation of eddy current in the upper fastening ring 110 and the lower fastening ring 120, the insulating pads 112 are arranged between the fastening ring blocks 111, and in the present application, the number of the insulating pads 112 is at least one set of adjacent fastening ring blocks 111.

[0041] As shown, the upper fastening ring 110 and the lower fastening ring 120 are both formed by splicing a plurality of fastening ring blocks 111, so that the upper fastening ring 110 and the lower fastening ring 120 are divided into blocks, facilitating the transportation and installation of the whole tokamak device. Meanwhile, under the action of the electromagnetic field, the upper fastening ring 110 and the lower fastening ring 120 will generate eddy current, which will affect the operation of the tokamak device, so in order to avoid the generation of eddy current in the upper fastening ring 110 and the lower fastening ring 120, the insulating pads 112 are arranged between the fastening ring blocks 111, and in the present application, the number of the insulating pads 112 is at least one set of adjacent fastening ring blocks 111.

[0042] In the description of the application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0044] In the description of the application, it also needs to be explained that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0045] The above only describes the preferred embodiments of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the protection scope of the application. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A toroidal field coil fixation device, characterized in that, The application relates to a fixing device for a toroidal field coil, which comprises an upper fastening ring, a lower fastening ring, a clamping connecting device and a diagonal support rod, wherein the upper fastening ring and the lower fastening ring are respectively arranged at the upper end and the lower end of the toroidal field coil, and the upper fastening ring and the lower fastening ring are respectively connected with the toroidal field coil through the clamping connecting device; the clamping connecting device comprises an inner clamping block and an outer clamping block, the inner clamping block and the outer clamping block are connected with the toroidal field coil in a radial direction through screw connection to realize close connection, a fixed plate is arranged between the outer clamping block and the upper fastening ring and the lower fastening ring, the outer clamping block is connected with the upper fastening ring and the lower fastening ring through the fixed plate, and the fixed plate is used for limiting the toroidal field coil from expanding along the diameter direction; the diagonal support rod is arranged between the upper fastening ring and the lower fastening ring, and the upper fastening ring and the lower fastening ring connect the upper end and the lower end of the multi-handle toroidal field coil into a whole, and convert the overturning force of the single-handle toroidal field coil into the torsional force between the upper fastening ring and the lower fastening ring. The upper fastening ring and the lower fastening ring are respectively formed by a plurality of fastening ring blocks which are spliced with each other. Insulating pads are arranged at the positions where the fastening ring blocks are spliced with each other. The diagonal support rods are uniformly arranged between the upper fastening ring and the lower fastening ring, are used for balancing the torsional force between the upper fastening ring and the lower fastening ring, form a triangular stable structure between the adjacent diagonal support rods and the upper fastening ring or the lower fastening ring, and are used for realizing the torque transmission between the upper fastening ring and the lower fastening ring. The clamping connecting device is arranged outside the toroidal field coil. The upper end and the lower end are respectively arranged at any positions between the midpoint and the highest point and the lowest point in the height direction of the toroidal field coil.

2. A toroidal field coil fixation arrangement according to claim 1, characterized in that Top screw holes are arranged on the two side surfaces of the inner clamping block and the outer clamping block, and top screws are arranged in the top screw holes to make the two side surfaces of the inner clamping block and the outer clamping block closely contact with the toroidal field coil.

3. A toroidal field coil fixation arrangement according to claim 1, wherein, The midpoint of the diagonal support rod coincides with the midpoint in the height direction of the toroidal field coil.

4. A toroidal field coil fixation arrangement according to claim 3, wherein, A stand is further connected to the bottom of the lower fastening ring.

5. A tokamak device, characterized in that, The application further discloses a toroidal field coil fixing device comprising the fixing device.

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