JPS6188762A - Rotary armature type superconductive rotary electric machine - Google Patents

Abstract

PURPOSE:To improve the assembling and inspecting workability of a bearing by providing an armature winding which rotates on the outer periphery of a superconductive electromagnet secured to a central shaft side, and providing a cylindrical stator support and a stator supporting shaft. CONSTITUTION:A superconductive field winding 4a is wound on a central shaft 3a secured through a support 2 to a foundation 1 to form a superconductive electromagnet 4. The electromagnet is contained in a cryostat 3b as a stator 3. A rotary armature 6 mounted with an armature winding 5 on the outer periphery is rotatably supported the shaft 3a through the first inside bearing 7 and to the foundation 1 through the outside bearing 8. In this case, the second inside bearing 9 is provided to support the end of the stator 3, and a stator supporting cylinder 13 and a stator supporting shaft 14 are rotatably supported therebetween. A magnetic shield 11 is provided on the outer periphery. Thus, the bearing 8 can be reduced in size, the bearing 9 can be observed from an inspection window 19 to readily assemble and inspect.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a rotary armature-type super-torture rotor having a central shaft side (two super-electromagnets fixed and an armature winding rotating on the outer circumferential side thereof). Electrical machinery (related to two things)

[The dramatic background of invention and its problems]

Conventional superelectrical rotating electric towers (e.g. generators, phase adjusters).

The mainstream of electric #J machines is the rotating field type, and the field @ winding of the superconducting electromagnet is installed in a rotating cryostand.
, supplying excitation current through the collector ring. The coolant, liquid helium, is supplied from the stationary cryostand to the rotating cryostand by a special device that connects the helium transfer coupling.The helium gas is supplied to the field winding using the special device mentioned above to cool and vaporize the field winding. C is discharged from the opposite direction.

For this reason, it is necessary to protect the installation part of the Field Magnet Section 3 of the Ichibi Do'bi Ii Zhuangseki, which is exposed to extremely low temperatures, in the rotating state, and further protect it from external magnetic fields. The outer periphery has a damper shield and 16 layers to protect the super-focused magnet. The rotor's internal low-temperature section is surrounded by a pure nitrogen layer, which is provided via a thin-walled cylindrical torque tube to provide insulation to the outside. Furthermore, since the superconducting electromagnet rotates, a magnetic shield made of a bonded magnetic steel plate is installed on the outer periphery of the stator in order to prevent the influence of the magnetic field lj from reaching the outside. The conventional rotating field type superconducting rotating electric machine having such a configuration has the following problems.

That is, in a rotating magnetic field type superconducting rotating electrical machine, there are many structural problems due to the provision of superelectric lines in the rotating part, which currently hinders its practical use.

On the other hand, there is also a rotating armature type superconducting rotating electric machine in which a superconducting electromagnet is fixed at one unit on the outer circumference of the rotor and a rotor having a rotating armature winding is arranged at the center, but the diameter is large. Since the superconducting field winding is provided on the outer periphery, there are problems in that the amount of superconducting field windings used increases, the amount of refrigerant accompanying this increases, and the heat insulating device and magnetic shield for the external normal temperature section become larger.

In order to solve the problems of superconducting rotating electric machines as mentioned above,
A rotating armature type superconducting rotating electric machine has been developed in recent years, which has a superconducting field winding arranged on a fixed central shaft side and a rotating armature winding around the outer periphery of the superconducting field winding.

In this structure, the superconducting wire is attached to the stator (
Since the refrigerant transfer device is not required between the stationary part and the rotating part, the device as a whole can be made smaller due to the smaller size of the heat insulating device and magnetic shield.

However, as shown in Fig. 3, in this conventional example, the superconducting field winding is placed on the side of the fixed central axis, and the rotating armature winding is arranged around the outer circumference of the superconducting field winding. The central shaft, which is the child, supplies the refrigerant.

The root part is fixed by a support device that also serves as a recovery device, but since the end part is inside the rotating armature, which has a cylindrical structure, it cannot be directly supported by a stationary part. Therefore, in the conventional structure, on the stator root side,
The rotating armature (6) is supported by the first inner bearing provided in the cylindrical small diameter portion at the end of the armature.The fixed f(4) supports the superconducting field winding (4M). It has a support device (
Put out the stator support shaft on the opposite side of 2), and attach the rotating electric machine 6
) is hollow on the torque connection side and supports the rotating armature via the second inner bearing (9). The transmission shaft (6a) of the rotating armature (6) is made as thin as possible and fixed to the foundation (1) via an outer bearing (8).

The outer bearing (8) supports the one-rotation armature (6) with this RC.
) is also large and difficult to inspect and maintain, and the area around the second inner bearing (9) or the support shaft [6a] (the torque transmission side of the two-turn armature has poor mechanical strength). Seen from above, there is one degree of narrowing.The second inner bearing (9) supporting the stator is completely inserted into the inner hole (6a) of the support shaft (6a).
6b) Since it is included in the bearing (9) assembly 1
Poor workability during inspection.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating armature type superelectrical rotating electric machine that is suitable for practical use and has a compact device and easy assembly and inspection of a bearing part.

[Summary of the invention]

In the present invention, a central axis C with one end fixed by a support device is provided, a superelectric field winding is provided, a superelectric magnet is formed as a stator, and a rotating armature agglomerate is provided on the outer periphery of the stator. A cylindrical stator support is provided on one side of the fixed opposite end of the stator and on one of the two opposing inner surfaces of the rotating armature, and the other side is provided with a cylindrical stator support. ζ2 has a stator support shaft and a bearing is interposed between the two to make the 5-rotation armature rotatable, resulting in miniaturization and assembly of the bearing part.

Rotating armature superelectric made easy to inspect! ! l! The rotating electric motor has been put into practical use, and the assembly and inspection of the bearing part has also been made easier.

The aim is to further reduce the size.

[Embodiments of the invention]

Example 1 A $1 example of the present invention will be described below with reference to FIG. Note that the same parts are given the same reference numerals in FIG. 1 of the conventional example, so please use this as a reference for understanding the conventional example.

A non-electromagnet (4) is formed by winding two superconducting field windings (4a) fixed on the foundation (1) via a support device (12). A cryostat (3b) is built into this part to form a fixed part (3), and a cylindrical winding is installed on the outer periphery of the armature winding (5).
The center axis (3a) is the rolling element (6)! For two,
The foundation (1) is freely supported via a first inner bearing (7) and an outer bearing (8). Stator (3
) of the rotating armature (6) to support the end of the rotating armature (6).
6 protrudes from the end of the fixed ch (3) with the second inner bearing 19) provided in the 7: li, jj stator support @1]σ0)
In order to support the rotary armature (6) and prevent the magnetic flux generated by the magnet (4) from leaking to the outside, a magnetic shield αυ is installed. The rotating armature (6) has a built-in armature winding plume (
5) is connected to the collector ring C121 and transmits and receives power to and from the outside via a plan not shown.

On the opposite side of this stator support device (2), a short stator support device (131
The rotating armature (6
), insert the nine keychain-shaped stator support shafts (14J), and rotate freely (one rotation - machine (6) via the first inner bearing (9)).
The transmission shaft (6a) is rotatably supported by an outer bearing (8). Wholesaling is an inspection window.

Effect (I will explain it with two).

In this structure, the refrigerant liquid helicum is introduced from the outside through the support device (2) into the central shaft (3) and in the superconducting field winding (4
After cooling and vaporizing a), it passes through the support device 12) again and is recovered to the outside. Since the second inner bearing (9) cannot be placed inside the transmission shaft (6a), the outer bearing (8) can be made smaller accordingly. Furthermore, assembly and inspection are easy because it is possible to look into the outer bearing (8) through the inspection window (19).

Example 2 The $2 figure shows the second example. This is a second inner bearing (2) in which a round bar-shaped stator support shaft I is provided at the end of the stator (3), and a cylindrical stator support device (13) is installed on the axial inner surface C of the rotating armature. 9) rotatably supports one rotor. The rest is as in Example 1.

In this way, compared to the first embodiment, the mounting positions of the fixed support shaft α and the stator support device αJ are reversed, and the functions and effects are the same as those of the first embodiment.

〔Effect of the invention〕

As described above, according to the present invention, a superconducting electromagnet fixed to the central axis side and a rotating armature winding are provided on the outer periphery of the superconducting electromagnet, and the fixed opposite end of the stator and the rotating armature opposite thereto are provided. A cylindrical stator support is installed on one of the inner surfaces of the stator, and a stator support shaft is installed on the other. Can be done,
Therefore, the outer bearing can also be made smaller, and the workability of assembling and inspecting the NJ receiving portion can be improved.

[Brief explanation of the drawing]

11 and 2 are longitudinal sectional views showing seven different embodiments of the rotary armature type superelectric quadruple B machine of the present invention, and FIG. 3 is a longitudinal sectional view showing a conventional example.

Claims (1)

[Claims] A superconducting field winding is installed on a central shaft whose one end is fixed by a support device, a superconducting electromagnet is formed as a stator, and a rotating armature with a rotating armature winding is installed around the outer periphery of the stator. A cylindrical stator support is provided on one of the fixed opposite end of the stator and the inner surface of the rotating armature facing this, a stator support shaft is provided on the other end, and a bearing is installed between the two. A rotating armature type superconducting rotating electrical machine characterized by having a rotating armature that is rotatable.