JPS58130769A - Manufacturing method of saddle-shaped superconducting field winding - Google Patents

Abstract

PURPOSE:To prevent quenching of a superconductive field coil by continuously winding the superconductive conductor to the last groove while forming the prescribed number of stages one by one from one groove disposed at the center between frame cores. CONSTITUTION:An element 9a in which frame cores 10a-10l having radial prescribed interval are disposed, is provided, an conductor is wound continuously from the prescribed one of grooves 19a-19j formed between the adjacent cores 10a-10l, i.e., one groove 19a disposed at the center to the final groove 19j while forming the prescribed number of stages. The prescribed insulation is formed and hardened on th coil which is finished in winding, and the element 9a after hardening is removed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a saddle-shaped superconducting field winding, and more particularly to a method of manufacturing a saddle-shaped superconducting field winding using labor.

The superconducting rotor used in the superconducting generator is shown in Figures 1 and 2.
As shown in the figure. The superconducting rotor 1 mainly includes a cylindrical torque tube 2 and a superconducting field winding (hereinafter referred to as 1 winding) 3
, a damper 4, a shaft 5, etc.

And the winding 3 is bound on the outer circumference of the torque tube 2.
6 'IQ' and is cooled by liquid helium 8 in a liquid helium container 7.

The shape of this winding #j3 is a race trunk-like saddle shape so that it can be easily supported on the outer periphery of the cylindrical torque tube as shown in Figure 3. is a cylindrical shape 9 as shown in FIG. This wire 9 has an F in the central part that forms the magnetic pole of the winding.
The center core 10 of the Rpg is installed and rolled, and a release sheet 11 is wound on the outer periphery to improve the shape of the M9 and the winding wire impregnated and hardened with resin after winding. There are ten of them.

Conventionally, when winding a superconducting conductor (hereinafter referred to as a conductor) using such a wire 9, as shown in FIGS. Do the first winding at the same time.

When the winding of the first stage is completed, it is placed on -1- of the first stage, and similarly to the first stage, it is wound outward with the center core 10 as the core, and the second stage is wound. In this way, the medium-sized wick 10 is wound in sequence to form a predetermined number of stages. Note that when winding each stage, the conductor 12 is held down by a jig 13, and a wedge-shaped spacer 1 is used to adjust the difference in dimension between the inner and outer circumferences each time the conductor 12 is wound several times.
4 and wind it up. After the winding is completed, a predetermined insulation is applied and the conductor 12 is hardened. However, when winding the conductor 12, if the conductor 12 is to be continuously wound, it will pass from the end of the first winding stage to the top of the first stage. The conductor 12 must be passed to the center core 10 at the beginning of the winding of the row.

In other words, when the first stage of winding is completed, the end of the wound conductor 12 must be passed over the first stage to the central core 10, and the second stage must be wound from there.
When a so-called cross section connecting the stages is formed between the stages of the wound wire, the wound conductor 12
Not only do they overlap poorly, resulting in a decrease in space factor, but also consideration must be given to the insulation of the transition parts. For this reason, it is generally not necessary to wind the winding continuously, but instead to wind it in stages such as the first stage and the second stage, and the sunrise wire 15 drawn out in each stage is connected externally by providing a connecting part 16. Was.

However, if there is such a connection part 16, heat will be generated because the connection part 16 has a connection resistance of about 0.3 μΩ, and if the connection part 16 is not supported enough, the connection part 16 will move and this 1 There is a concern that the winding 3 will quench due to the generation of heat.

Note that the predetermined insulation 3 after the above-mentioned winding is completed is performed as follows. First, as shown in FIG. 6, the four parts 17 of the winding 3 that have been wound are filled with glass cloth up to the height of the winding 3, and the outer periphery of the winding 3 is covered with glass cloth. Turn the cape to form a layer of glass cloth about the same thickness as the lining. Next, after impregnating and curing the epoxy/resin, shave it into a concentric solid shape and attach it to the J section of the glass cloth and the epoxy M (,
An FRP layer 18 of ll1r or C- is formed. After completing such predetermined insulation, the wire is removed from the winding 3 to complete the manufacture of one winding 3.

The present invention has been developed in view of the above points, and its purpose is to improve the quenching process. The present invention provides a method for manufacturing a saddle-shaped superconducting field winding.

That is, the present invention includes a first step of providing a groove in which frame windows are arranged at predetermined intervals in the radial direction, and a superconducting conductor is formed from a predetermined one of the grooves formed between adjacent frame windows. While forming a predetermined number of stages.

The second step is to continuously wind the wire up to the last groove, the third step is to apply a predetermined insulation to the wire after winding and harden it, and the fourth step is to take out the wire after hardening. It is characterized by this.

The present invention will be explained below based on the illustrated embodiments. An embodiment of the present invention is shown in FIGS. 7 to 11. Note that parts that are the same as those in the prior art are given the same reference numerals, and therefore their explanations will be omitted. In this embodiment, the first step is to provide a groove 9a in which frame windows 10a to 10t are arranged at predetermined intervals in the radial direction, and grooves 19a to 19a to be formed between adjacent frame windows 10a to 10/. 19j, that is, one groove 19a located in the center, conductor 1 one by one.
a second step in which a predetermined number of stages are formed in step 2, and the wire is continuously wound in order up to the last groove 19'', and a third step is to apply a predetermined insulation to the winding wire 3a after winding and harden it. , and a fourth step of taking out the cured material 9a. In other words, this frame window 10a is formed in one groove lQa located in the medium heat part of the saddle-shaped grooves 19a to 19J formed by the frame windows 10a to 10t made by I''R1).

From one frame window 10 a 1llllI of iob to frame window io
Using the conductor 12 as a core, wind the conductor 12 in the direction of the frame window IQ l) to wind the first stage, and when the first stage winding is completed, continue from the end and this time from the other frame window 101) side. frame window 10b
Using this as a core, stack and wind the first stage in the window frame 10/1 direction. This is repeated alternately to form a predetermined number of continuous winding stages, but at this time, the jig 13 a 'C't' f is rolled while holding down the whole 12 so that the winding can be done smoothly. (See Figure 9). When the winding in one groove 19,1 located in the center of - and °L, - is completed, the winding in this groove 1921 is completed. is continuously wound into the next groove 19b in the same order from the end of the body 12,
The end of the wound conductor 12 was moved from the groove l 9 =1 to the groove 19L1 by passing through the transition grooves 20 provided in the frame windows 10b to 10k, respectively (see FIGS. 7 and 8).

In this way, a predetermined number of stages are formed from one groove to another in the direction indicated by the arrow in the figure, and the winding is continued until the last groove 19J. After winding, the winding 3a fills the recess 17 of the winding 3a, which is a predetermined insulator, and a concentric FRP layer 18 made of glass cloth and epoxy resin is formed on the outer periphery of the winding 3a. 9a was removed to complete the winding 3a. If the bolts 21 attaching the frame windows 10a to 10t to the winding 9a are removed, the winding 9a can be easily removed from the winding 3a since the release sheet 11 is wrapped around the surface of the winding 9a. By manufacturing in this way, continuous winding is possible, and the connecting portion of the conductor 12 can be formed only by the Hiji wire 15a from which the conductor 12 is drawn out at the beginning of the winding, and the Hiji wire 15b from which the conductor 12 is drawn out at the end of the winding. Unnecessary quenching caused by conventional connections can be prevented. Also, people's grooves 19a-1
Since the number of turns of each stage within "9" is smaller than that of the conventional case, the voltage between each stage can be reduced.

In this embodiment, the transition groove 20 is provided to move the end of the wound conductor from groove to groove.
Even if you don't set up, the same large h1! l can.

Furthermore, in this embodiment, the groove 19. Although the winding is started from I, it is also possible to start winding from the groove 19J located in the center on the opposite side.

As described above, in the present invention, a predetermined number of stages are formed with the super-IIL29 conductor from one groove located in the center between the frame windows, and the conductor is continuously wound in order up to the last groove. This allows continuous winding, eliminates the need for a connecting part, and prevents quenching caused by the welding part, creating a saddle-shaped superconducting field that prevents quenching.
The wire spinning method can be changed.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional side view of a superconducting rotor with a saddle-shaped superconducting field winding, Figure 2 is a 1J side view taken along the A-A line in Figure 1, and Figure 3
The figure is a perspective view showing the shape of a saddle-shaped superconducting field winding manufactured by a conventional method for manufacturing a saddle-shaped superconducting field winding. FIG. 5 is a perspective view showing a state in which a part of the wire is wound in the conventional saddle-shaped superconducting field winding manufacturing method;
FIG. 6 is a perspective view of a saddle-shaped superconducting field winding manufactured by a conventional saddle-shaped superconducting field winding manufacturing method, and FIG. 7 is an implementation of the saddle-shaped superconducting field winding manufacturing method of the present invention. FIG. 8 is a perspective view of a coil used in the winding work of the example; FIG. 8 is a perspective view showing a state in which the coil is wound in an embodiment of the method for producing a saddle-shaped superconducting field winding of the present invention; FIG. Similarly, FIG. 10 is a perspective view showing the winding state between the frame windows, and FIG.
The figure is a perspective view of a saddle-shaped superconducting field winding according to an embodiment of the method for manufacturing a saddle-shaped superconducting field winding of the present invention. 3a...saddle-shaped superconducting field winding, 9a...hire, 10a
. 10b, IOC, 10d, 10e, 10f, 10g. 10) 1,10 r, 10j, 10, 101-=frame window, iz-Mi13i44 bodies, 19 a, 19
bs i 9 C. 19d, 19e, 19f, 19g, 1911, 19i. x9J-groove. 33 Figure 3 Figure 6

Claims (1)

[Claims] 1. A first step of providing grooves in which frame cores are arranged at predetermined intervals in the radial direction, and a predetermined groove is formed between each of the grooves formed between the adjacent frame cores with a superconducting conductor. a second step of continuously winding the wire in order up to the last groove while forming a number of stages; a third step of applying a predetermined insulation to the winding that has been completed and hardening; A method for manufacturing a saddle-shaped superconducting field winding, characterized by comprising a fourth step of extracting the load.