JPH11235010A - Multiple-layer cylindrical rotor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the balance of inner rotating bodies from the outside of a rotor without disassembling the component parts of the rotor. SOLUTION: A multiple-layer cylindrical rotor is provided with a coil mounting shaft 5 inside. Also, a cylindrical radiation shield 9 and a room temperature damper 1 are provided coaxially at the outside diameter side of this coil mounting shaft 5 and rotate together with the coil mounting shaft 5. In this multiple- layer cylindrical rotor, a balancing weight 11 is provided in holes 5a in the radial direction provided at a given interval in the circumferential direction of the coil mounting shaft 5. Also, a motor 10 is provided which moves the balancing weight 11 along the holes 5a. Each motor is connected to a power supply outside the rotor and powered to move the balancing weight appropriately for the adjustment of the balance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-cylinder rotor of a superconducting rotating electric machine using a superconducting wire as a rotor winding.

[0002]

2. Description of the Related Art For example, a rotor of a superconducting generator using a superconducting wire as a field winding is shown in FIG. In FIG. 18, reference numeral 1 denotes a normal-temperature damper which forms a rotor outer cylinder and also serves as a vacuum heat-insulating container. Rotary shafts 2 and 3 are integrally provided at both ends of the normal-temperature damper 1, and these rotary shafts are provided. The bearings 2 and 3 are supported by bearings 4, respectively.

[0005] A coil mounting shaft 5 is provided coaxially inside the normal temperature damper 1 and stores a refrigerant inside the coil mounting shaft 5 to be cooled to a very low temperature. The coil mounting shaft 5 houses a superconducting field coil 6. A thin cylindrical torque tube 7 is provided at the end of the coil mounting shaft 5.
a and 7b are provided coaxially, and one of the torque tubes 7a is directly attached to the rotating shaft 2 and the other torque tube 7b is connected to the rotating shaft 3 via a flexible support 8 for absorbing a difference in heat shrinkage in the axial direction. Mounted on

A radiation shield 9 is coaxially disposed on the coil mounting shaft 5 and mounted on the torque tubes 7a and 7b. The radiation shield 9 cools the cryogenic temperature from the room temperature damper 1 in the room temperature range. In order to prevent heat from entering the coil mounting shaft 5 due to radiation, the temperature is maintained at an intermediate temperature between the normal temperature damper 1 and the coil mounting shaft 5.

FIG. 17 shows an example of the bending natural vibration mode of such a multiple cylindrical rotor. In FIG. 17, the order of the mode is in the order of the lowest natural frequency. Generally, the multi-cylindrical rotor has an in-phase mode in which the bending natural vibration 31 of the outer cylinder and the bending natural vibration 32 of the inner cylinder vibrate in the same phase as in the first mode in FIG. It is known that the bending natural vibration 31 of the outer cylinder and the bending natural vibration 32 of the inner cylinder have anti-phase modes in which they vibrate in opposite phases.

From the viewpoint of rotor balance adjustment, the in-phase mode and the anti-phase mode have the following characteristics. That is, there is a possibility that an imbalance exists in both the outer cylinder and the inner cylinder in the multi-cylindrical rotor, but the phase relation in which the unbalance forces act on the same phase mode is the same. Therefore, it is possible to perform balance adjustment on one of the cylinders.

On the other hand, in the anti-phase mode, since the phase relationship in which the unbalance force acts on the outer cylinder and the inner cylinder is shifted from each other by 180 degrees, the balance must be adjusted for each cylinder.

[0008]

Incidentally, among the multiple cylindrical rotors, the superconducting generator has a vacuum insulation space between the outer cylinder and the inner cylinder so that the inner cylinder is accessed for balance adjustment. It is difficult.

[0009] The multiple cylindrical rotor is relatively small,
If the rotor is short, only the low-order in-phase mode has an effect on the operating range of the number of rotations. A number may disassemble the rotor or be within operating range. In such a case, an effective structure and method are needed to adjust the balance without disassembling the rotor or breaking the vacuum in the rotor.

[0010] The present invention has been made in view of the above-mentioned circumstances, and when the internal rotating body becomes unbalanced for some reason after assembling the multi-cylindrical rotor, the components of the rotor can be disassembled without being disassembled. It is another object of the present invention to provide a multi-cylindrical rotor capable of adjusting the balance of the internal rotor from outside the rotor.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a multiple cylindrical rotor by the following means. According to a first aspect of the present invention, there is provided a multi-cylinder having a rotating body inside, and at least one or more cylinders arranged coaxially on the outer diameter side of the rotating body and rotating integrally with the inside rotating body. In the type rotor, a balance weight is provided in a plurality of radial holes provided at predetermined intervals in a circumferential direction of the rotating body, and a motor for moving the balance weight along the hole is provided. Each of these motors is connected to a power source external to the rotor and energized to move the balance weight appropriately to adjust the balance.

According to a second aspect of the present invention, a rotating body is provided inside, and at least one or more cylinders are coaxially disposed on the outer diameter side of the rotating body to rotate integrally with the internal rotating body. A plurality of balance weights and a motor for moving each of these balance weights along the annular groove are provided in an annular groove provided in a circumferential direction of the rotating body. Are connected to a power source outside the rotor and energized, so that the balance weight is appropriately moved to adjust the balance.

Therefore, in the multi-cylindrical rotor according to the first and second aspects of the present invention, the balance weight provided movably on the internal rotating body by driving the motor is connected to the outside of the rotor. It is possible to move the motor in the radial direction or the circumferential direction of the internal rotating body by driving the motor by the external power supply, and accordingly, by appropriately changing the moving position of the balance weight from outside the rotor, the internal rotating body is balanced. Adjustments can be made.

According to a third aspect of the present invention, there is provided a rotating body inside, and at least one or more cylinders are coaxially arranged on the outer diameter side of the rotating body to rotate integrally with the inside rotating body. A plurality of radial holes provided at predetermined intervals in the circumferential direction of the rotating body are divided into two or more chambers communicating with two or more radial holes, and some of the chambers A container containing a low-melting-point metal serving as a balance weight and a heating device for heating the container are provided in the room, and the heating device is connected to a power supply outside the rotor to heat the container, whereby the container is melted. The low-melting point metal is appropriately moved between the rooms by the gravity to adjust the balance.

According to a fourth aspect of the present invention, there is provided a rotating body inside, and at least one or more cylinders are coaxially arranged on the outer diameter side of the rotating body to rotate integrally with the inside rotating body. In a multi-cylindrical rotor, the chamber is divided into two or more rooms communicating with a plurality of long holes provided at predetermined intervals in the circumferential direction of the rotating body, and some of the rooms communicate with each other. A container containing a low-melting-point metal serving as a balance weight and a heating device for heating the container, and connecting the heating device to a power supply external to the rotor to heat the container. The balance is adjusted by appropriately moving the melting point metal between the rooms by its gravity.

Accordingly, in the multi-cylindrical rotor according to the third and fourth aspects of the present invention, any one of the containers having two or more communicating rooms provided on the internal rotating body is provided. The balance weight made of low-melting metal stored in the room is heated by a heating device connected to an external power supply to melt the low-melting metal, and the gravity is used to move the molten metal to another room and resolidify it. Thus, the balance of the internal rotating body can be adjusted by appropriately changing the melting amount of the low melting point metal from outside the rotor.

According to a fifth aspect of the present invention, a rotating body is provided inside, and at least one or more cylinders are coaxially disposed on the outer diameter side of the rotating body to rotate integrally with the rotating body inside. In the multi-cylindrical rotor to be inserted, a pipe for accommodating a liquid serving as a balance weight is inserted into a plurality of radial holes provided at predetermined intervals in a circumferential direction of the rotating body, and The pipes are connected to these pipes so as to communicate with the outside of the rotor, and a liquid serving as a balance weight is supplied or discharged from the outside of the rotor to the pipes through the pipes to adjust the balance.

According to a sixth aspect of the present invention, a rotating body is provided inside, and at least one or more cylinders are coaxially arranged on the outer diameter side of the rotating body to rotate integrally with the internal rotating body. In the multi-cylindrical rotor, a plurality of radial holes provided at predetermined intervals in the circumferential direction of the rotating body are each inserted with a tubular body containing a granular solid serving as a balance weight. In addition, pipes are connected to these pipes so as to communicate with the outside of the rotor, and a particulate solid serving as a balance weight from the outside of the rotor is appropriately inserted or taken out of the pipes through the pipes to adjust the balance. It is.

Therefore, in the multi-cylindrical rotor according to the third and fourth aspects of the present invention, the plurality of pipes provided on the inner rotating body are communicated with the outside of the inner rotating body. Since the liquid or the granular solid can be appropriately fed through the connected pipe, the balance of the internal rotating body can be adjusted by appropriately changing the amount of sealing from outside the rotor.

According to a seventh aspect of the present invention, a rotating body is provided inside, and at least one or more cylinders are coaxially disposed on the outer diameter side of the rotating body to rotate integrally with the internal rotating body. In a multiple cylindrical rotor, balance weights are movably provided in a plurality of radial through holes provided at predetermined intervals in a circumferential direction of the rotating body, and wires are attached to these balance weights. Are connected to the outside of the rotor, and the wires are appropriately inserted or withdrawn from the outside of the rotor to move the balance weight in the radial direction to adjust the balance.

Therefore, in the multi-cylindrical rotor according to the invention corresponding to claim 7, the balance weight movably inserted into the plurality of radial through holes provided in the internal rotating body is connected to the external. Since it is possible to move the balance by wire operation, the balance of the internal rotating body can be adjusted by appropriately changing the moving position of the balance weight from outside the rotor.

According to an eighth aspect of the present invention, a rotating body is provided inside, and at least one or more cylinders are coaxially arranged on the outer diameter side of the rotating body to rotate integrally with the internal rotating body. In the multi-cylindrical rotor, a hollow shaft having a multi-shaft configuration rotatable independently from the outside of the rotating body is provided coaxially with the rotating body, and the hollow shaft is positioned inside the rotating body to serve as a balance weight. Discs having a corresponding unbalanced weight are attached, and these discs are appropriately rotated from outside the rotor to adjust the balance.

Therefore, in the multi-cylindrical rotor according to the present invention, the unbalanced weight attached to the hollow shaft of the multi-shaft configuration provided on the inner rotating body and communicating with the outside of the rotor. It is possible to externally change the rotation angle of the disk corresponding to a plurality of balance weights having the following, so that the balance of the internal rotating body is adjusted by appropriately changing the rotation angle of the disk from outside the rotor. Can be.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a first embodiment of a multiple cylindrical rotor according to the present invention, and FIG. 2 is a transverse sectional view showing the same embodiment.

In FIGS. 1 and 2, reference numeral 1 denotes a normal temperature damper which forms a rotor outer cylinder and also serves as a vacuum heat insulating container. Rotary shafts 2 and 3 are integrally provided at both ends of the normal temperature damper 1. The rotating shafts 2 and 3 are supported by bearings 4, respectively.

Reference numeral 5 denotes a coil mounting shaft provided coaxially inside the room temperature damper 1, and a coolant is stored inside the coil mounting shaft 5 to be cooled to an extremely low temperature. The coil mounting shaft 5 houses a superconducting field coil 6. A thin cylindrical torque tube 7 is provided at the end of the coil mounting shaft 5.
a and 7b are provided coaxially, and one of the torque tubes 7a is directly attached to the rotating shaft 2 and the other torque tube 7b is connected to the rotating shaft 3 via a flexible support 8 for absorbing a difference in heat shrinkage in the axial direction. Mounted on

A radiation shield 9 is coaxially disposed on the coil mounting shaft 5 and mounted on the torque tubes 7a and 7b. The radiation shield 9 cools the cryogenic temperature from the room temperature damper 1 in the room temperature range. In order to prevent heat from entering the coil mounting shaft 5 due to radiation, the temperature is maintained at an intermediate temperature between the normal temperature damper 1 and the coil mounting shaft 5.

In the multiple cylindrical rotor having such a configuration, in the first embodiment, a plurality (four in this example) of radial holes 4a are provided at equal intervals in the coil mounting shaft 5. In addition, the motor 10 is inserted into each of the holes 5a, and a ball screw 12 is directly connected to a rotation shaft of the motor 10 so as to be rotatable. Further, the balance weight 11 is screwed into the ball screw 12 to drive the motor 10. As a result, the balance screw 11 is rotated to move the balance weight 11 in the radial direction of the coil mounting shaft 5 to constitute a balance adjustment mechanism.

The power supply lead wire 13 connected to the motor 10 is led out of the hole provided on the rotary shaft 3 through the center hole of the coil mounting shaft 5 and is connected to an external power supply (not shown).

In the multi-cylindrical rotor having such a configuration, when the motor 10 is driven by an external power supply, the ball screw 12 rotates, and the balance weight 11
Moves to an appropriate position in the radial direction of the coil mounting shaft 5 according to the rotation direction and the number of rotations of the coil.

In this case, the balance weight of each of the four balance adjusting mechanisms provided at equal intervals in the circumferential direction of the coil mounting shaft 5 is adjusted appropriately. As described above, according to the first embodiment, each of the balance adjusting mechanisms provided in advance on the coil mounting shaft 5 is connected to the power supply lead 13 led out of the rotary shaft 3 through the center hole in the coil mounting shaft 5.
Since an external power supply is connected and driven, the radial position of each balance weight 11 can be changed from outside the rotor. Therefore, in any direction by appropriately combining the radial positions of the balance weights 11,
Further, within the range of the maximum adjustment amount determined by the movement amount of the balance weight 11, the balance adjustment of the weight amount can be appropriately performed within the range of the maximum adjustment amount determined by an arbitrary weight amount.

FIG. 3 is a longitudinal sectional view showing a second embodiment of a multiple cylindrical rotor according to the present invention, and FIG. 4 is a transverse sectional view showing the same embodiment. Are denoted by the same reference numerals, and description thereof is omitted. Here, different points will be described.

In the second embodiment, as shown in FIGS. 3 and 4, an annular groove 5b is provided on the outer peripheral surface of the coil mounting shaft 5, and a plurality (four in this example) is provided in the annular groove 5b. A balance weight 15 having wheels 14 is provided movably, and the motor 10 is
And a balance adjusting mechanism that can move the balance weight 15 to an appropriate position in the circumferential direction along the annular groove 5b by driving the motor 10.

A power supply lead wire 13 connected to each motor 10 is led out through a hole provided in the rotary shaft 3 through a center hole of the coil mounting shaft 5 and connected to an external power supply (not shown).

In the multi-cylindrical rotor having the above-described structure, when the motor 10 is driven by an external power supply, the wheels 14 are rotated in conjunction therewith, and the balance weight 15 is circularly moved along the annular groove 5b of the coil mounting shaft 5. Move to an appropriate position in the circumferential direction.

In this case, the balance weights 15 of the four balance adjustment mechanisms provided at equal intervals in the circumferential direction of the coil mounting shaft 5 are moved to appropriate positions along the circumferential direction. The balance adjustment of the entire coil mounting shaft 5 is performed.

As described above, according to the second embodiment, the balance weight 15 having the wheels 14 movably disposed in the annular groove 5b provided on the coil mounting shaft 5 in advance is mounted on the coil mounting shaft 5. An external power supply is connected to a power supply lead wire 13 led out of the rotary shaft 3 through the center hole to connect the motor 1
By driving 0, each balance weight 15 can be changed to an appropriate position in the circumferential direction from outside the rotor. Therefore, the balance of the coil mounting shaft 5 can be adjusted by appropriately combining the circumferential positions of the balance weights 15.

FIG. 5 is a longitudinal sectional view showing a third embodiment of a multiple cylindrical rotor according to the present invention, and FIG. 6 is a transverse sectional view showing the same embodiment. Are denoted by the same reference numerals, and description thereof is omitted. Here, different points will be described.

In the third embodiment, as shown in FIGS. 5 and 6, a plurality (four in this example) of radial holes 5a are provided on the coil mounting shaft 5 at equal intervals. Each hole 5a
The inside of the container is divided into two rooms, and a "hourglass-type" container 17 containing a low melting point metal such as indium 16 as a balance weight in some of the rooms.
And a heating device 18 capable of melting the indium 16 is provided on the outer periphery of the container 17 to constitute a balance adjusting mechanism.

The power supply lead wires 13 connected to the respective heating devices 18 pass through the center hole of the coil mounting shaft 5 to rotate the rotary shaft 3.
And is connected to an external power supply (not shown).

In the multi-cylindrical rotor having such a configuration, when the heating device 18 is energized by an external power supply, indium contained in some room of the container 17 is melted. Is performed as follows. That is, as shown in FIG. 6, the indium 16 is melted at the lower position in the circumferential direction (at 6 o'clock on the clock) as shown in FIG. Can be moved by gravity. Similarly, by melting the indium 16 at the upper position (the 12 o'clock position of the timepiece), the balance weight, that is, the indium 16 can be moved by gravity to the room on the inner diameter side of the rotation radius.

When the power of the heating device 18 is turned off, the indium 16 solidifies and is fixed in the container. In addition, since the center of the container 17 is constricted like an hourglass, the indium 16 does not move in the container during the rotation operation.

As described above, according to the third embodiment, the hourglass in which the indium 16 is housed in the plurality of radial holes 5a provided in advance in the coil mounting shaft 5 at equal intervals in the circumferential direction. Insert the container 17 of the mold and
A heating device 18 for melting the melt 6 is provided, and the heating device 18 is energized from an external power supply via the power supply lead wire 13 to melt the indium 16 serving as a balance weight and flow it to a desired position in the radial direction. After that, by turning off the power and solidifying the indium 16 in the molten state,
Since the radial position of indium serving as a balance weight can be changed from outside the rotor, it is possible to adjust the balance of the entire coil mounting shaft 5 from outside the rotor.

FIG. 7 is a longitudinal sectional view showing a fourth embodiment of the multi-cylindrical rotor according to the present invention, and FIG. 8 is a transverse sectional view showing the same embodiment. Are denoted by the same reference numerals, and description thereof is omitted. Here, different points will be described.

In the fourth embodiment, as shown in FIGS. 7 and 8, a plurality of (four in this example) long holes 5c are provided at equal intervals in the coil mounting shaft 5 along the circumferential direction. An "hourglass-type" container in which the middle is confined in each of the long holes 5c and divided into two rooms, and a low-melting-point metal, for example, indium 16 is accommodated in some of the rooms as a balance weight. 17 is inserted, and a heating device 18 capable of melting the indium 16 is provided on the inner peripheral side of the outer periphery of the container 17 to constitute a balance adjusting mechanism.

The power supply lead wires 13 connected to the respective heating devices 18 pass through the center hole of the coil mounting shaft 5 to rotate the rotating shaft 3.
And is connected to an external power supply (not shown).

In the multi-cylindrical rotor having such a configuration, when the heating device 18 is energized by an external power source, the indium 16 housed in some room of the container 17 is melted. Is performed as follows. That is, since each container 17 is disposed in the circumferential direction of the coil mounting shaft 5, the container 17 is moved in the horizontal position in the circumferential direction of rotation, for example, at the 3 o'clock position of the clock, and the indium 16 is moved.
, The lower room in the container can be moved by gravity. Similarly, it is possible to move the inside of the container 17 to the room in the opposite direction by melting the indium 16 at the 9 o'clock position of the watch.

By turning off the power of the heating device 18, the indium 16 solidifies and is fixed in the container. As described above, according to the fourth embodiment, the hourglass-shaped container 1 in which the indium 16 is accommodated in the plurality of long holes 5c provided at equal intervals in advance in the coil mounting shaft 5 along the circumferential direction.
7 is inserted, and a heating device 18 for melting the indium 16 is provided, and the heating device 18 is energized from an external power supply via the power supply lead wire 13 so that the indium 16 serving as a balance weight is melted and the circumference is melted. After flowing to the desired position in the direction, the power is turned off to solidify the molten indium 16, so that it is possible to change the circumferential position of indium serving as a balance weight from outside the rotor, The balance of the entire coil mounting shaft 5 can be adjusted from outside the rotor.

FIG. 9 is a longitudinal sectional view showing a fifth embodiment of the multiple cylindrical rotor according to the present invention, and FIG. 10 is a transverse sectional view showing the same embodiment. Are denoted by the same reference numerals, and description thereof is omitted. Here, different points will be described.

In the fifth embodiment, FIG. 9 and FIG.
As shown in the figure, multiple (four in this example) are mounted on the coil mounting shaft 5.
Through holes 5d are provided in the radial direction at equal intervals in the circumferential direction. A tube 20 containing a liquid, for example, mercury 19, is inserted into each of the through holes 5d as a balance weight, and the coil mounting shaft 5 A pipe 21 is connected to the end of the pipe body 20 facing the center hole, and the pipe 21 is passed through the center hole to rotate the rotary shaft 3.
And a mercury supply or discharge from a mercury supply source (not shown).

In the multi-cylindrical rotor having the above-described configuration, the mercury is added to the tube to which a weight is to be added among the tubes 20 inserted into the through holes 5d of the coil mounting shaft 5 through the pipe 21 from the mercury supply source. Can be supplied.

As described above, according to the fifth embodiment, a plurality of radial through holes 5d provided in the coil mounting shaft 5 are provided.
The mercury 19 is sealed from the outside of the rotor through the pipe 21 to the tube to which the weight is to be added among the tubes 20 inserted into the tube 20, so that the balance of the entire coil mounting shaft 5 can be adjusted from the outside of the rotor.

FIG. 11 is a longitudinal sectional view showing a sixth embodiment of a multiple cylindrical rotor according to the present invention, and FIG. 12 is a transverse sectional view showing the same embodiment. Are denoted by the same reference numerals, and description thereof is omitted. Here, different points will be described.

In the sixth embodiment, FIGS.
As shown in FIG. 2, a plurality of coils (4 in this example)
) Are provided in the radial direction at equal intervals in the circumferential direction, and a tubular body 20 containing a granular solid, here a hard sphere 22, is inserted into each of the through holes 5d as a balance weight. Tube 20 facing the center hole side of coil mounting shaft 5
A pipe 21 is connected to an end of the rotary shaft 3, and the pipe 21 is led out through a hole provided in the rotating shaft 3 through a center hole, so that a hard sphere can be inserted or pulled out from an insertion port (not shown).

In this case, it is needless to say that the size of the hard sphere has a certain mass and can be inserted into the pipe 20 through the pipe 21. In the multi-cylindrical rotor having such a configuration, among the tubes 20 inserted into the through holes 5d of the coil mounting shaft 5 through the pipes 21 from the hard ball insertion ports, the rigid balls 22 are inserted into the tubes to which a weight is to be added. It is possible to do.

As described above, according to the sixth embodiment, a plurality of radial through holes 5 d provided in the coil mounting shaft 5 are provided.
By enclosing the rigid sphere 22 from the outside of the rotor through the pipe 21 to the tube to which a balance weight is to be added among the tubes 20 inserted into the tube 20, the balance of the entire coil mounting shaft 5 can be adjusted from outside the rotor.

FIG. 13 is a longitudinal sectional view showing a seventh embodiment of a multiple cylindrical rotor according to the present invention, and FIG. 14 is a transverse sectional view showing the same embodiment. Are denoted by the same reference numerals, and description thereof is omitted. Here, different points will be described.

In the seventh embodiment, FIG. 13 and FIG.
As shown in FIG. 4, a plurality of coils (4 in this example)
) Are provided in the radial direction at equal intervals in the circumferential direction, and a block-shaped balance weight 24 is provided in the pipe 23 inserted into each of the through holes 5d.
A wire 25 connected to the balance weight 24 is led out through a hole provided in the rotating shaft 3 through a center hole of the coil mounting shaft 5, and the wire 25 is inserted or pulled out from the outside of the rotor, thereby forming the balance weight 24. It is configured to be movable in the radial direction of the coil mounting shaft 5.

In the multi-cylindrical rotor having such a configuration, by adjusting the length of the wire 25 inserted into the pipe 23 through the center hole of the coil mounting shaft 5 from the wire insertion port, the balance weight 24 It moves in the radial direction of the mounting shaft 5. Therefore, the radial position of the balance weight 24 in each pipe 23 can be appropriately adjusted by inserting and removing the wire 25.

As described above, according to the seventh embodiment, the radial position of the balance weight 24 is changed by the wire 25 connected from the inside of the coil mounting shaft 5 to the outside of the rotor. By adjusting the load applied to the contact portion 5, the balance of the coil mounting shaft 5 can be adjusted from outside the rotor.

FIG. 15 is a longitudinal sectional view showing an eighth embodiment of the multi-cylindrical rotor according to the present invention, and FIG. 16 is a transverse sectional view showing the same embodiment, and is the same as FIG. 1 and FIG. Are denoted by the same reference numerals, and description thereof is omitted. Here, different points will be described.

In the eighth embodiment, FIG. 13 and FIG.
As shown in FIG. 4, a hollow shaft 26 having a multi-shaft configuration is provided on the center axis of rotation so that one end is located in the center hole of the coil mounting shaft 5, and the other end is rotatably supported coaxially with the rotation shaft 3. Then, a disk 28 having a plurality of unbalanced portions 27 corresponding to balance weights is attached to one end of each tubular body of the hollow shaft 26, respectively. In this example, a case is shown in which the disks 28 are attached to the respective ends of the quadruple shaft.

The multi-cylindrical rotor having such a configuration has an unbalanced weight portion 27 by independently rotating each shaft of the hollow shaft 26 connected to each disk 28 from outside the rotor. The position of each disk 28 can be adjusted.

As described above, according to the eighth embodiment, each disk 28 is attached to one end of each shaft of the hollow shaft 26, and each shaft of the hollow shaft 26 is appropriately moved from the outside of the rotor to unlock the disk. By adjusting the position of the balance weight portion 27, it is possible to adjust the balance of the coil mounting shaft 5 from outside the rotor.

[0065]

As described above, according to the present invention, even if the internal rotor is unbalanced for some reason after assembling the multiple cylindrical rotor, the components of the rotor can be disassembled without disassembling. Since the balance can be adjusted by moving the balance weight provided on the internal rotating body from the outside of the rotor, a good multi-cylindrical rotor with less vibration can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a multiple cylindrical rotor according to the present invention.

FIG. 2 is a cross-sectional view showing the embodiment.

FIG. 3 is a longitudinal sectional view showing a second embodiment of the multiple cylindrical rotor according to the present invention.

FIG. 4 is a transverse sectional view showing the embodiment.

FIG. 5 is a longitudinal sectional view showing a third embodiment of a multiple cylindrical rotor according to the present invention.

FIG. 6 is a transverse sectional view showing the embodiment.

FIG. 7 is a longitudinal sectional view showing a fourth embodiment of a multiple cylindrical rotor according to the present invention.

FIG. 8 is a transverse sectional view showing the embodiment.

FIG. 9 is a longitudinal sectional view showing a fifth embodiment of the multiple cylindrical rotor according to the present invention.

FIG. 10 is a cross-sectional view showing the embodiment.

FIG. 11 is a longitudinal sectional view showing a sixth embodiment of a multiple cylindrical rotor according to the present invention.

FIG. 12 is a transverse sectional view showing the embodiment.

FIG. 13 is a longitudinal sectional view showing a seventh embodiment of a multiple cylindrical rotor according to the present invention.

FIG. 14 is a cross-sectional view showing the embodiment.

FIG. 15 is a longitudinal sectional view showing an eighth embodiment of a multiple cylindrical rotor according to the present invention.

FIG. 16 is a transverse sectional view showing the embodiment.

FIG. 17 is a diagram showing an example of a bending natural vibration mode of a multiple cylindrical rotor.

FIG. 18 is a longitudinal sectional view showing a configuration example of a rotor of a superconducting generator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Room temperature damper 2, 3 ... Rotating shaft 4 ... Bearing 5 ... Coil mounting shaft 5a ... Hole 5b ... Annular groove 5c ... Long hole 5d ... Through hole 6 ... Superconducting disclosure coil 7a, 7b ... Torque tube 8 ... Flexible support 9 ... Radiation shield 10 ... Motor 11 ... Balance weight 12 ... Ball screw 13 ... Power lead wire 14 ... Wheels 15 ... Balance weight 16 ... Injum 17 ... Vessel 18 Heating device 19 Mercury 20 Tube 21 Pipe 22 Hard ball 23 Pipe 24 Balance weight 25 Wire 26 Hollow shaft 27 Unbalanced part 28 Disk

 ──────────────────────────────────────────────────の Continuation of the front page (72) Inventor Hideyuki Nakamura 2-4 Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Toshiba Keihin Works Co., Ltd.

Claims (8)

[Claims] 1. A multi-cylindrical rotor having a rotating body therein, at least one or more cylinders disposed coaxially on an outer diameter side of the rotating body and rotating integrally with the rotating body therein. A plurality of radial holes provided at predetermined intervals in the circumferential direction of the rotating body are provided with a balance weight and a motor for moving the balance weight along the hole, respectively. A multi-cylindrical rotor, wherein the balance weight is appropriately moved to adjust the balance by being connected to a power source outside the rotor and energized. 2. A multi-cylindrical rotor having a rotating body inside, and at least one or more cylinders arranged coaxially on the outer diameter side of the rotating body and rotating integrally with the inside rotating body. A plurality of balance weights and motors for moving each of these balance weights along the annular groove are provided in annular grooves provided in the circumferential direction of the rotating body, and these motors are connected to a power supply outside the rotor. A multi-cylindrical rotor characterized in that the balance weight is appropriately moved to adjust the balance by connecting and energizing each. 3. A multi-cylindrical rotor having a rotating body inside, at least one or more cylinders arranged coaxially on the outer diameter side of the rotating body and rotating integrally with the inside rotating body. The rotating body is divided into two or more rooms communicating with a plurality of radial holes provided at predetermined intervals in a circumferential direction of the rotating body, and serves as a balance weight in some of the rooms. A container containing the low-melting metal and a heating device for heating the container are provided, and the heating device is connected to a power source outside the rotor to heat the container, whereby the gravity of the molten low-melting metal is increased. A multi-cylindrical rotor characterized in that the balance is adjusted by appropriately moving between the rooms. 4. A multi-cylindrical rotor having a rotating body therein, at least one or more cylinders disposed coaxially on the outer diameter side of the rotating body and rotating integrally with the inner rotating body. A low melting point which is divided into two or more rooms which communicate with a plurality of slots provided at predetermined intervals in the circumferential direction of the rotating body, and which serves as a balance weight in any of the rooms; A container containing a metal and a heating device for heating the container are provided, and the heating device is connected to a power supply external to a rotor to heat the container. A multi-cylindrical rotor characterized in that the balance is adjusted by appropriately moving the gap. 5. A multi-cylindrical rotor having a rotating body therein, at least one or more cylinders disposed coaxially on the outer diameter side of the rotating body and rotating integrally with the rotating body therein. A plurality of radial holes provided at predetermined intervals in the circumferential direction of the rotating body, each of which inserts a pipe containing a liquid serving as a balance weight, and connects pipes to these pipes. A multi-cylindrical rotor characterized in that it is connected to communicate with the outside of the rotor, and a liquid serving as a balance weight is supplied or discharged from the outside of the rotor to the tube through the pipe as appropriate to adjust the balance. 6. A multi-cylindrical rotor having a rotating body therein, at least one or more cylinders disposed coaxially on the outer diameter side of the rotating body and rotating integrally with the inner rotating body. A plurality of radial holes provided at predetermined intervals in the circumferential direction of the rotating body are inserted into the plurality of radial holes, respectively, to accommodate a tubular body containing a granular solid serving as a balance weight, and into these tubular bodies A multi-cylindrical shape, in which a pipe is connected to communicate with the outside of the rotor, and a granular solid serving as a balance weight is externally inserted into or taken out of the pipe through the pipe to adjust the balance. Rotor. 7. A multi-cylindrical rotor having a rotating body inside, at least one or more cylinders arranged coaxially on the outer diameter side of the rotating body and rotating integrally with the rotating body inside. A plurality of balance weights are movably provided in a plurality of radial through holes provided at predetermined intervals in a circumferential direction of the rotating body, and wires are connected to these balance weights, and a rotor is provided. A multi-cylindrical rotor characterized in that the balance weight is moved in the radial direction by adjusting the balance by radially moving the balance weight by leading the wire to the outside and appropriately inserting or extracting the wire from the outside of the rotor. 8. A multi-cylindrical rotor having a rotating body therein, at least one or more cylinders disposed coaxially on the outer diameter side of the rotating body, and rotating integrally with the rotating body inside. A hollow shaft having a multi-axis configuration rotatable independently from the outside of the rotating body is provided coaxially with the rotating body, and the hollow shaft has an unbalanced weight corresponding to a balance weight when positioned inside the rotating body. A multi-cylindrical rotor, wherein discs are attached to each other, and these discs are appropriately rotated from outside the rotor to adjust the balance.