JPH0452963Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to superconducting magnets, and particularly relates to improvements in the structure of grading magnets that are easy to wind and have high structural stability after winding. .

[Technical background of the invention] A grading magnet has been known as a structure of superconducting magnets. This magnet uses superconducting wires that have different wire diameters and critical current values on the high magnetic field side (inside) and the low magnetic field side (outside), with the aim of making the magnet more compact and reducing manufacturing costs. For example, as shown in FIG. 3, a superconducting magnet 1 includes an inner coil 3 and an outer coil 4 wound around a winding frame 2, and a reinforcing layer 5 on the outer periphery of the outer coil.
The entire coil is impregnated and solidified with epoxy resin.

A current terminal (not shown) is fixed on the outside of one of the collar plates 2a of the winding frame 2, and therefore, when winding to form a coil, both ends of each coil 3 and 4 are connected to the collar. It is necessary to lead it out to the outside of the plate 2a. In this case, the magnet 1 as shown in FIG.
Conventionally, a collar plate of the shape shown in FIG. 4 has been used as the collar plate of the winding frame 2. That is, the winding drum 2 of the collar plate 2a
An outlet port 6 at the winding start end of the superconducting wire of the inner coil 3 is formed at a position in contact with b, and an outlet port 7 at the winding end end of the inner coil and an outlet port 7 at the winding end of the outer coil 4 are formed at a position in contact with the outer diameter of the inner coil 3. In addition to forming an outlet 8 at the winding start end, a notch 9 is provided on the outer periphery of the collar plate for pulling out the winding end of the outer coil 4. The terminal parts are connected outside the reel. 4 is a top view seen from direction A in FIG. 3.

[Problems of Background Art] The structure of the winding frame as described above causes the following problems. That is, after winding the inner coil 3, in order to pull out the end from the outlet 7, the winding part is fixed with adhesive tape, etc., the superconducting wire to which high tension is applied is cut, and this cut part is attached to the collar. It must be drawn out from the outlet 7 from the inside of the plate 2a to the outside.

In this case, there is a high possibility that the winding section will loosen, and especially in the case of large-sized superconducting wires, it is impossible to prevent the tension from decreasing in the winding section, and it is also difficult to pull out the terminal from the outlet. Master the. Furthermore, there is a problem in that the insulation coating of the superconducting wire is easily damaged during the drawing operation, and this is particularly likely to occur in the case of glass-coated insulation.

``Purpose of the invention'' The present invention was made in order to solve the above-mentioned difficulties, and it has a structure that allows the end of the winding of the superconducting coil to be led out to the outside of the flange plate under tension and fixed. The object of the present invention is to provide a superconducting magnet having a winding frame.

[Summary of the invention] The invention consists of a winding frame having a winding drum and a pair of collar plates fixed on both sides of the winding drum, and a wire diameter and/or In a grading magnet equipped with a plurality of superconducting coils made of superconducting wires having different characteristics, the winding frame has one flange plate for guiding the winding start ends of the plurality of superconducting coils out of the winding frame. a plurality of outlet ports A, and a plurality of outlet ports B for guiding the winding end portion of the superconducting coil excluding at least the outermost layer to the outside of the winding frame, and a plurality of outlet ports A extending from the outer periphery of the one flange plate to the outlet port B. By having a separable structure in which a part of the flange plate can form a notch, a plurality of superconducting coils can be formed while applying tension during winding.

In addition, in grading magnets,
Generally, the winding end of the outermost superconducting coil is the fourth
As shown in the figure, since it is pulled out from the notch formed on the outer peripheral side of the collar plate, there is no need to make part of the collar plate separable in this case.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings. FIG. 1 shows a grading magnet 10, and FIG. 2 shows a flange plate 11 on the current terminal side of a winding frame used therein. In addition, in FIGS. 1 and 2, the same parts as in FIGS. 3 and 4 are indicated by the same symbols. In the figure, the grading magnet 10 consists of two superconducting coils 3, 4.
These coils are concentrically wound on the winding drum 2b of the winding frame 12.

In the flange plate 11 of the winding frame 12, an outlet 6 at the winding start end of the superconducting wire is formed at a position where its side edge 6a contacts the outer periphery of the winding drum 2b, and similarly, an outlet 6 is formed at the outer periphery of the inner coil 3. Inner coil 3 at the position where the side edges touch
An outlet port 13 at the winding end of the outer coil 4 and an outlet port 8 at the winding start end of the outer coil 4 are formed at an appropriate distance from this outlet. Furthermore, a notch 9 is formed in the outer circumferential portion of the collar plate 11 for pulling out the winding end portion of the outer coil 4.

The outlet 13 at the winding end of the inner coil 3 is configured to be separable from the flange plate 11 by a small piece 14 whose opposite sides are the outer side edge of the outlet and the outer periphery of the flange plate. Its cross section has a convex shape that fits within the area formed in the flange plate so that when it is fitted into the flange plate 11, it can resist external forces from inside the flange plate.

In the superconducting magnet configured as described above, after winding the inner coil, by separating the small pieces while maintaining the tension, the end of the winding is pulled from the outer periphery of the collar plate to the outlet. , this terminal part can be fixed on the outside of the collar plate. The outer coil is then formed after the pieces are fitted.

In the above embodiment, the case where the superconducting magnet is formed by two coils has been described, but the present invention is not limited to this, and the present invention can be similarly applied to the case where the superconducting magnet is formed by three or more coils. Needless to say, it can be applied to

[Effects of the invention] As described above, in the superconducting magnet of the invention, the terminal parts of multiple coils can be fixed while maintaining their tension, which not only improves workability during manufacturing, but also reduces the stress of the magnet itself. It becomes possible to maintain the original performance of the

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing an embodiment of the superconducting magnet of the present invention, FIG. 2 is a plan view of its flange plate, and FIG. 3 is a schematic diagram of a conventional superconducting magnet.
FIG. 4 is a plan view of the collar plate. 3...Inner coil, 4...Outer coil, 6...
Outlet port at the end of the winding start, 8... Outlet port at the end of the winding start, 9... Notch, 10... Grading magnet, 11... Flange plate, 13... Outlet port at the end of the winding end, 14...Small pieces.

Claims (1)

[Scope of utility model registration request] A winding frame having a winding drum and a pair of collar plates fixed on both sides of the winding drum, and a plurality of superconducting wires having different wire diameters and/or characteristics wound concentrically on the winding frame. In the grading magnet equipped with a superconducting coil, the winding frame has at least a plurality of outlet ports A on one of the flanges for leading out winding start ends of the plurality of superconducting coils to the outside of the winding frame. An outlet B is provided for guiding the winding end of the superconducting coil except for the outermost layer out of the winding frame, and a part of the flange plate extending from the outer periphery of the one flange plate to the outlet B has a notch. A superconducting magnet characterized in that it is formed so as to be separable.