JP4202575B2 - Superconducting magnet for magnetic levitation train - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a superconducting magnet for a magnetic levitation train.
[0002]
[Prior art]
Conventionally, as a technique in such a field, Japanese Patent Application Laid-Open No. 11-89012 has already been proposed by the applicant of the present application.
[0003]
FIG. 5 is a cross-sectional view of a conventional superconducting magnet for a magnetic levitation train having such an induction current collecting coil, and FIG. 6 is a cross-sectional view taken along the line CC ′ of FIG.
[0004]
As shown in these figures, the superconducting magnet for a magnetically levitated train having this induction current collecting coil is opposed to the levitating coil 114 and the propulsion coil 115 installed on the side wall 113 on the ground side, and the bogie 112 of the magnetically levitated train. The superconducting magnet 101 installed on the surface of the outer tub 102 is fixed to the surface of the outer tub 102 that fixes the induction current collecting coil 111 opposite to the levitation coil 114 in an eccentric manner.
[0005]
Further, the coolant passage hole of the spacer metal fitting 104 fixed to the inner tank 103 of the superconducting coil 107 is processed so that the coolant passage hole 106 on the induction current collecting coil 111 side is small and the coolant passage hole 105 on the opposite side of the carriage is made large. Further, the thickness of the spacer metal fitting 104 in the vicinity of the induction current collecting coil 111 side is made thicker than the opposite side. In addition, 108 is a load support material, 109 is a nitrogen shield board, 110 is a heat insulating material.
[0006]
With this configuration, when collecting power from the ground side to the vehicle side using the electromagnetic induction phenomenon between the superconducting magnet for a magnetic levitation train mounted on the vehicle and the levitation coil on the ground side, induction collection is performed. It is possible to maintain a stable power supply and a superconducting state while securing a space for installing the electric coil.
[0007]
[Problems to be solved by the invention]
However, the above-described conventional superconducting magnet for a magnetic levitation train has the following problems.
[0008]
(1) Only the superconducting coil 107 is decentered without changing the shape (width, height, etc.) of the inner tank cross section itself, and the spacer metal fitting 104 has different dimensions on the ground coil side and the cart side, and the refrigerant passage hole Since 105 and 106 are also different in size, a difference in the rigidity of the metal fittings occurs, so that it is difficult to tighten the superconducting coil uniformly.
[0009]
(2) In the superconducting magnet for a magnetically levitated train described above, a current collecting system using an induction current collecting coil has been proposed. However, in the present invention, various current collecting methods in place of the induction current collecting coil can be supported. Therefore, the relationship with the ground coil can be simplified.
[0010]
An object of the present invention is to provide a superconducting magnet for a magnetic levitation train that can reduce the distance between the superconducting coil and the levitation coil while ensuring the necessary rigidity.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides
[1] A magnetic levitation installed in a vehicle in which an inner tank holding the superconducting coil in the refrigerant and an outer tank in which the inner tank is installed are arranged on the carriage, facing the ground coil installed on the ground side wall. in a train for a superconducting magnet, the superconducting coil as well as placed in the center of the inner tub with a reduced cross, the center of the superconducting coil to bias the ground coils side of the outer tub sides placed close superconducting coil to the ground coils side And the material of the 1st inner tank part by the side of a trolley is made into the material whose elasticity modulus is higher than the material of the 2nd inner tank part by the side of the ground coil .
[0012]
[2] In the superconducting magnet for a magnetically levitated train described in [1] above, a reinforcing member is arranged on the outer surface of the inner tank on the carriage side.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
FIG. 1 is a cross-sectional view of a superconducting magnet for a magnetic levitation train according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the superconducting magnet for a magnetic levitation train taken along line AA ′.
[0015]
In these drawings, the superconducting magnet 1 for a magnetic levitation train faces a levitation coil 14 and a propulsion coil 15 installed on a side wall 13 on the ground side. The superconducting coil 7 is disposed at the center of the inner tank 3 with a reduced width, and the center of the superconducting coil 7 is disposed so as to be biased toward the outer surface 2A of the outer tank 2 on the ground coil side. That is, the superconducting coil 7 is disposed at the center of the inner tank 3, and the spacer metal fittings 4 having the refrigerant passage holes 5 having the same dimensions are disposed on both sides thereof. In addition, 8 is a load support material, 9 is a nitrogen shield board, 10 is a heat insulating material, 12 is a trolley | bogie.
[0016]
Here, the distance between the center of the inner tub 3 and the center of the levitation coil 14 is L ₂ , the distance between the center of the inner tub 3 and the outer surface 2 A of the outer tub 2 on the ground coil side is L ₂ ′, Assuming that the width is L ₃ ′ and the distance L ₄ between the inner surface 3 C of the inner tub 3 on the ground coil side and the outer surface 2 A of the outer tub 2 on the ground coil side, the width of the conventional inner tub 3 was 86 mm. On the other hand, for example, by setting the width of the inner tub 3 to L ₃ ′ of 62 mm, L ₂ ′ and L ₂ can be shortened by 12 mm without changing the distance L ₄ .
[0017]
However, if the width L ₃ ′ of the inner tub 3 is simply reduced in this way, the rigidity of the inner tub 3 is reduced, the vibration of the superconducting coil 7 during traveling is increased, and the amount of heat generated by the vibration is increased. Therefore, in order to prevent this, the reinforcing member 6 is arranged on the inner tank outer surface 3B of the inner tank 3 on the cart 12 side.
[0018]
By configuring in this way, according to the present invention, if the current is the same as the current superconducting coil current, the distance between the levitation coil 14 and the superconducting coil 7 can be reduced. The power can be increased.
[0019]
Further, since the superconducting coil current for obtaining the same levitation force as the current levitation force can be reduced, the magnetic field in the vehicle is reduced and the magnetic shield material can be reduced in weight.
[0020]
Furthermore, compared with the prior art shown in FIG. 5, the positional relationship between the inner tub 3 and the superconducting coil 7 is balanced, and the ground coil side and the carriage side spacer metal fittings 4 can have the same dimensions. The coolant passage holes 5 have the same dimensions, and there is no difference in the rigidity of the metal fittings 4, so that uniform superconducting coils can be tightened.
[0021]
Moreover, simplification can be achieved compared with the case where the induction current collecting coil which is the prior art shown in FIG. 5 is arranged on the outer tank surface.
[0022]
FIG. 3 is a cross-sectional view of a superconducting magnet for a magnetic levitation train showing a second embodiment of the present invention, and FIG. 4 is a cross-sectional view of the superconducting magnet for a magnetic levitation train taken along the line BB ′. In this embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0023]
In this embodiment, instead of arranging the reinforcing member 6 of the first embodiment, the material of the inner tank 20 is the middle (welded part), and the first inner tank part 21 and the second inner tank are different. This is part 22. That is, the material of the first inner tank portion 21 on the cart side is made of a material having a higher elastic modulus than the material of the second inner tank portion 22 on the ground coil side. For example, the material of the first inner tank part 21 is “stainless steel 316”, and the material of the second inner tank part 22 is “stainless steel 304”.
[0024]
Needless to say, the second embodiment may be used in combination with the first embodiment.
[0025]
According to this embodiment, it is possible to take measures against an increase in vibration due to insufficient rigidity of the inner tank 3 having a narrow width without newly providing a reinforcing member as in the first embodiment.
[0026]
In addition, this invention is not limited to the said Example, A various deformation | transformation is possible based on the meaning of this invention, and these are not excluded from the scope of the present invention.
[0027]
【The invention's effect】
As described above in detail, according to the present invention, the following effects can be obtained.
[0028]
(1) While ensuring the necessary rigidity, the distance between the superconducting coil and the levitation coil can be reduced, and the levitation force can be increased.
[0029]
(2) The in-vehicle magnetic field can be reduced.
[Brief description of the drawings]
FIG. 1 is a sectional view of a superconducting magnet for a magnetic levitation train according to a first embodiment of the present invention.
2 is a cross-sectional view taken along the line AA ′ in FIG. 1;
FIG. 3 is a cross-sectional view of a superconducting magnet for a magnetic levitation train showing a second embodiment of the present invention.
4 is a cross-sectional view taken along the line BB ′ in FIG. 3;
FIG. 5 is a cross-sectional view of a superconducting magnet for a magnetically levitated train having a conventional induction current collecting coil.
6 is a cross-sectional view taken along the line CC ′ of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Superconducting magnet for magnetic levitation train 2 Outer tank 2A Outer surface of ground coil side 3,20 Inner tank 3B Outer surface of inner tank of cart side 3C Inner surface of ground coil side 4 Spacer fitting 5 Refrigerant passage hole 6 Reinforcing member 7 Superconducting coil 7A Outside surface on the ground coil side 8 Load support material 9 Nitrogen shield plate 10 Thermal insulation material 12 Car 13 Ground side wall 14 Floating coil 15 Propulsion coil 21 First inner tank part 22 Second inner tank part

Claims (2)

Superconducting for a magnetic levitation train installed in a vehicle, with an inner tank that holds the superconducting coil in a refrigerant and an outer tank that houses the inner tank disposed on the carriage, facing the ground coil installed on the side wall on the ground In the magnet
The superconducting coil is disposed at the center of the inner tank with a reduced width, the center of the superconducting coil is biased toward the outer tank side surface on the ground coil side, the superconducting coil is disposed close to the ground coil side , and A superconducting magnet for a magnetic levitation train, characterized in that the material of the first inner tank part is made of a material having a higher elastic modulus than the material of the second inner tank part on the ground coil side .   The superconducting magnet for a magnetic levitation train according to claim 1, wherein a reinforcing member is disposed on the outer surface of the inner tank on the carriage side.

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