JP6538591B2 - Stationary induction appliance - Google Patents

Description

  The present invention relates to an annular wound core configured by cutting and laminating thin strip magnetic materials used in stationary induction devices such as transformers and reactors, forming into a substantially U shape, and closing one end by a lap joint technique or the like. In particular, the present invention relates to a technology for reducing excitation noise of the wound iron core.

  Low-loss magnetic materials such as ultra-thin electromagnetic steel sheets, amorphous alloys, and nanocrystal alloys are thin strips with a thickness of approximately 100 μm or less in order to suppress losses due to eddy currents flowing in the materials. In stationary induction devices such as transformers and reactors, those materials are cut into a specified length, and a large number of sheets are stacked to form a U shape with one end opened, and single-phase or multi-phase winding from the open portion , And the open part is closed, and it comprises a substantially circular or substantially rectangular wound core provided with a joint such as a butt joint or a lap joint. In addition, the wound iron core is held with the straight portion (magnetic leg portion) provided with the winding in the vertical direction and the straight portion (yoke portion) not provided with the winding directed in the horizontal direction. It is common to be used as

  The wound core described above is characterized in that the thin strip magnetic materials are not adhered and fixed to each other in order to prevent an increase in magnetic loss. For this reason, a wound iron core alone can not maintain its shape, and is generally made to stand by some support means and function as an iron core for stationary induction electronics. For example, in Patent Document 1, a rectangular mold metal is placed on the inner periphery of a substantially circular wound iron core yoke part, and a U-shaped molded holding metal fitting is placed on the outer periphery to make arced corner parts of the wound iron core. There is disclosed a technology concerning the shape and manufacturing method of a metal fitting which can be formed into a rectangular shape and smoothly and favorably maintain its shape.

  In addition, when an alternating voltage is applied to the winding of the stationary induction device, an alternating magnetic flux is generated in the wound core, and the magnetic material constituting the wound core expands and contracts due to the magnetostriction phenomenon. Since the wound iron core vibrates due to the expansion and contraction and becomes a noise source, many techniques for reducing the noise are also disclosed. For example, Patent Document 2 discloses a technique for stably holding the magnetic characteristics of an iron core by winding a thin plate-like outer frame around the outer periphery of a wound iron core and controlling the tightening pressure of the outer frame to an appropriate value. It is done.

JP, 2001-76951, A Unexamined-Japanese-Patent No. 4-206610

  According to the prior art, the method of holding a wound iron core formed into a rectangular shape having arc-shaped corner portions supports the load of the wound iron core in the vertical direction, and occurs in linear portions such as magnetic legs and yokes. The vibration velocity (proportional to the noise value) caused by the magnetostriction is not suppressed, and there is a problem that it is difficult to obtain a sufficient noise reduction effect.

  An object of the present invention is to provide a stationary induction device in which the large magnetostrictive vibration generated at the straight portion of the wound iron core is suppressed, and the noise caused by the magnetostriction is reduced.

In order to solve the above-mentioned subject, composition indicated in a claim is adopted.
The present application includes a plurality of means for solving the above-mentioned problems, and by way of example, a large number of thin ribbon-shaped magnetic materials are stacked and the open ends are joined to form a substantially rectangular shape having arc-shaped corners. A stationary induction device comprising a shaped wound core and a winding inserted into the wound core, wherein stress is applied in substantially horizontal outward directions provided on inner circumferential arc portions on both upper sides of the wound core. And a means for supporting the load of the wound core, and a means for supporting the load of the wound core while applying a stress in a substantially horizontal inward direction, provided at outer peripheral arc portions on both lower sides of the wound core. .

  In the stationary induction battery according to the present invention, the means for supporting the load of the wound core while applying a stress in the substantially horizontal outer direction provided in the inner circumferential arc portion on both upper sides of the wound core includes the inner circumferential arc portion and It is preferable to be composed of a rod-like member having substantially the same radius of curvature and a member for applying a stress to the rod-like member in a substantially horizontal direction.

  Further, in the stationary induction battery according to the present invention, the means for supporting the load of the winding core while applying stress in the substantially horizontal inner direction, provided at outer peripheral arcs on both lower sides of the winding core is the lower portion of the winding core. It is preferable that the bracket comprises a bracket having a radius of curvature substantially the same as that of the outer circumferential arc, and a member for applying a stress to the bracket in a substantially horizontal inward direction.

  According to the configuration of the present invention, the load of a wound induction core for a stationary induction device having arc-shaped corners is not supported in the vertical direction by straight portions such as magnetic legs and yokes, but the magnetostrictive vibration of the wound iron core It is possible to support in the radial direction of the corner portion at the arc-shaped corner portion in which the directions are dispersed. As a result, it is possible to suppress large magnetostrictive vibration generated in the straight portion of the wound iron core, and noise due to the magnetostriction is reduced as compared with the method of supporting the wound iron core according to the prior art. Furthermore, by controlling the magnitude of each stress applied to the support member at the time of manufacture, it becomes possible to simply suppress the production variation of the noise of the wound iron core as compared with the prior art.

BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view of a single phase stationary induction appliance which shows 1st Example of this invention. The longitudinal cross-sectional view of a single phase stationary induction appliance which shows the 2nd example of the present invention. The longitudinal cross-sectional view of a single phase stationary induction appliance which shows the 3rd example of the present invention. The longitudinal cross-sectional view of a single phase stationary induction appliance which shows the 4th example of the present invention. The longitudinal cross-sectional view of a single phase stationary induction appliance which shows the 5th example of the present invention. The longitudinal cross-sectional view of a three-phase static induction battery which shows the 6th example of the present invention. The longitudinal cross-sectional view of a three-phase static induction battery which shows the 7th example of the present invention. The figure which shows the calculation result of the magnetostriction force distribution of a single phase amorphous winding core by a three-dimensional magnetic field analysis. The figure which shows the deformation amount by the magnetostriction vibration of the single phase amorphous winding iron core by the conventional supporting method by a three-dimensional structural analysis. The figure which shows the deformation amount by the magnetostriction vibration of the single phase amorphous wound iron core by the supporting method of this invention by three-dimensional structure analysis.

  Hereinafter, a plurality of embodiments of the present invention will be described in detail with reference to the drawings. In each of the drawings for explaining the embodiments, the same components are denoted by the same names and reference numerals, and the repetitive description thereof will be omitted.

  FIG. 1 is a longitudinal sectional view of a single-phase stationary induction battery according to a first embodiment of the present invention. In addition, a present Example demonstrates the minimum structure required in order to acquire the effect of this invention, and its fundamental effect | action. A specific configuration for causing this action to be expressed by an actual stationary induction device will be exemplified in Example 2 and thereafter.

  Stationary structure in which two sets of windings 2 are provided in the vertical direction straight portion (magnetic leg portion) of a substantially rectangular single-phase wound iron core 1 configured by stacking a large number of thin strip-shaped magnetic materials having arc-shaped corner portions In the induction battery, a reaction 5a of the load of the iron core is applied vertically upward to the inner circumferential arc portions 1a on both upper sides of the wound iron core 1. At this time, when means for applying stress 6a in the horizontal outer direction to each other is provided in the inner circumferential arc portion 1a, the reaction direction of the load on the upper portion of the wound core 1 becomes the resultant force 7a of the reaction 5a of the load and the stress 6a. This is the radial direction of the arc portion at the top of the wound core 1. A reaction 5b of the load of the wound iron core 1 acts vertically upward on the outer peripheral arc portions 1b on both lower sides of the wound iron core 1. At this time, when means for applying stress 6b to the outer circumferential arc portion 1b in the horizontal and inward directions is provided, the reaction direction of the load on the lower part of the wound core 1 becomes the combined force 7b of the reaction 5b of the load and the stress 6b. This is the radial direction of the lower circular portion of 1.

  Next, the reduction effect of the noise caused by the magnetostriction of the wound core obtained by the configuration of the present invention will be described using the calculation results of the three-dimensional magnetic field analysis and the three-dimensional structural analysis.

  FIG. 8 shows the maximum value of stress (magnetostrictive force) on the iron core surface generated due to the magnetostrictive property of the magnetic material when a single-phase wound iron core made of thin strip magnetic material is excited at 50 Hz (windings are not shown) Is the result of calculation of the distribution of V by three-dimensional magnetic field analysis. The longer the arrow, the higher the concentration means that the amplitude of the magnetostrictive force is larger. The magnetic material assumed in this analysis is a 25 μm thick 2605HB1M amorphous ribbon manufactured by Hitachi Metals, Ltd. The dimensions of the wound iron core, the excitation conditions, the mechanical characteristics and the magnetostriction characteristics are as shown in Table 1. .

  The magnetostrictive force generated on the surface of the wound iron core is large at the linear portions such as the magnetic leg portion and the yoke portion, while in the arc portion the direction in which the magnetostrictive force acts is dispersed. Less than half of

  FIGS. 9 and 10 show the results of three-dimensional structural analysis of the amount of deformation caused by the excitation vibration of the wound iron core by magnetostrictive force determined by three-dimensional magnetic field analysis. The basic frequency of the vibration due to the magnetostrictive force is 100 Hz which corresponds to twice the excitation frequency of 50 Hz of the winding iron core, and each drawing shows two states in which the amount of deformation takes the maximum value and the phase differs by 180 degrees. . In addition, the amount of deformation of the wound core shown in these figures is drawn emphatically to 100,000 times the actual size.

  In this calculation, in FIG. 9 and FIG. 10, the location of the constraining surface 50 of the wound core 1 is different. That is, FIG. 9 simulates the support state of the conventional wound core, and restrains the inner peripheral surface of the upper yoke and the outer peripheral surface of the lower yoke. This form simulates the state of supporting the load of the wound core in the vertical direction. On the other hand, FIG. 10 simulates the support state of the wound iron core according to the present embodiment, and restrains the inner peripheral surface of the arc part on both sides of the upper part of the iron core and the outer peripheral surface of the arc part on both lower parts. This mode simulates a state in which a horizontal stress is applied to the arc portion of the wound iron core, and the combined force with the load is supported to be directed in the radial direction of the arc portion.

  With the magnetostrictive force oscillating at 100 Hz acting on a substantially rectangular wound iron core having arc-shaped corners, a vibration mode in which the magnetic leg opens and closes in the horizontal direction becomes dominant. According to this analysis, in the conventional supporting method shown in FIG. 9, while the maximum displacement of the magnetic leg is about 0.65 μm, in the supporting method simulating the present example shown in FIG. The maximum displacement of the magnetic leg portion is about 0.1 μm, which is 1/6 or less of that of the conventional example. In the supporting method simulating the present embodiment, since the arc portion of the iron core in which the direction in which the magnetostrictive force acts is dispersed is restrained, the amplitude of vibration is suppressed. Along with this, according to this analysis, the sound pressure level generated on the surface of the iron core is reduced by about 10 dB as compared with the conventional example, and a sufficient noise reduction effect can be obtained by this embodiment.

  The stationary induction battery according to the present embodiment comprises means for supporting the load of the wound core while applying stress in the substantially horizontal outward direction, provided on the inner circumferential arcs on both sides of the upper portion of the wound core; And means for supporting the load of the wound iron core while applying a stress in a substantially horizontal inward direction provided in the arc portion. Then, the resultant of the reaction force of the reaction in the substantially horizontal direction applied to the inner circumferential arcs on both upper and lower outer circumferential arcs of the wound iron core and the load acting in the vertical direction of the wound iron core is the arc portion of the wound iron core The radial direction of the

  According to this embodiment, the load of the winding core for a stationary induction device having arc-shaped corner portions is a radiused direction of the corner portion at the arc-shaped corner portions where the direction of the magnetostrictive vibration of the winding core is dispersed. Since it supports, it is possible to suppress the large magnetostrictive vibration generated in the straight portion of the wound iron core and to reduce the noise caused by the magnetostriction.

  FIG. 2 is a longitudinal sectional view of a single-phase stationary induction battery according to a second embodiment of the present invention. In order to obtain the effects of the present invention described in the first embodiment, in this embodiment, two sets of rod-like members 3 having a curvature radius r substantially the same as that of the circular arc portion 1a on the inner circumferential arc portion 1a on both upper sides of the wound iron core 1 Abut. Then, a binding material 31 is put on the rod-like member 3, and further, the binding material 31 is applied to an arc portion at the top of the wound core 1 to apply a clamping pressure 6a. The load 5a of the wound iron core 1 applied to the rod-like member 3 is applied to a structure other than the wound iron core such as the winding 2, and the structure is supported by a support member (not shown). In FIG. 2, as an example, it is shown that a reaction 5c which combines the load and the load of the winding itself is applied to the lower end of the winding 2, and the reaction 5c is a support member (not shown) for supporting the winding. Supported by According to this configuration, the reaction direction of the load on the upper portion of the wound core 1 is the resultant force 7 a of the load 5 a of the wound iron core and the clamping pressure 6 a, and the radial direction of the arc portion on the upper portion of the wound core 1. In addition, in order to avoid that the current path which encloses the wound iron core 1 is formed, at least one of the rod-shaped member 3 and the binding material 31 is comprised with an insulating material.

  Next, two sets of metal fittings 4 having substantially the same radius of curvature as that of the circular arc portion are applied to the outer peripheral circular arc portions on both lower sides of the wound core 1. A second metal fitting 10 is placed on the side surface of the receiving metal fitting 4 and a fastening pressure 6 b is applied by fixing the second metal fitting 10 to the bottom surface while applying pressure to each other inward. Since the reaction 5b of the load of the wound core 1 acts vertically upward on the bracket 4, the direction of the load acting on the lower arc portion of the wound core 1 is the resultant of the reaction 5b of the load and the clamping pressure 6b. It becomes 7b and it becomes radial direction. In FIG. 2, the second metal fitting 10 corresponding to the side surface of the receiving metal fitting 4 is provided. However, when the rigidity of the receiving metal fitting 4 is high, the second metal fitting 10 may not be provided.

  In the attachment of the wound iron core of this embodiment, two rod-like members are inserted in the inner circumferential arcs on both sides of the upper part of the substantially rectangular wound iron core formed by stacking a large number of thin strip magnetic materials, While applying stress, apply a core load to the winding. Then, an arc-shaped receiving metal fitting is placed on the outer peripheral arcs on both sides of the lower portion of the wound iron core to apply a load on the iron core while applying stress in a substantially horizontal inner direction. By applying a load to the arc portion in which the direction of the magnetostrictive force of the iron core is dispersed, the excitation noise caused by the magnetostriction is reduced.

  According to the present embodiment, the rod-like member is brought into contact with the inner circumferential arcs on both sides of the upper portion of the wound iron core, and the binding material is applied to the arcs of the rod-like member and the wound iron core to apply clamping pressure. The large magnetostrictive vibration generated at the straight portion of the iron core can be suppressed, and the noise caused by the magnetostriction can be reduced, and the tightening pressure can be adjusted by the binding material. In addition, the clamping pressure is applied by placing two sets of metal fittings 4 on the outer circumferential arcs on both sides of the lower part of the wound core and applying pressure to each other while applying pressure to each other. The large magnetostrictive vibration generated at the straight portion of the wound iron core can be suppressed, and the noise caused by the magnetostriction can be reduced.

  FIG. 3 is a longitudinal sectional view of a single-phase stationary induction battery according to a third embodiment of the present invention. The configuration of the upper portion of the wound core 1 in the present embodiment is the same as that of the second embodiment, so the description of the operation will be omitted.

  In the present embodiment, two sets of rod-like members 3a having a radius of curvature r substantially the same as that of the arc portion are brought into contact with the inner peripheral arc portions on both lower sides of the wound core 1. Then, two sets of receiving brackets 4 having substantially the same radius of curvature as that of the circular arc portion are provided in outer peripheral arc portions on both lower sides of the wound iron core 1, and a binding material 31 is further provided between the receiving bracket 4 and the rod-like member 3a. And apply a tightening pressure to each other to apply a stress 6b in the inward direction.

  According to this embodiment, the rod-like member is brought into contact with the inner circumferential arcs on both lower sides of the lower core of the wound core, and the outer peripheral arcs on both lower sides of the lower core are provided with the receiving bracket, and bound between the receiving bracket and the rod Since the clamping pressure is applied by applying the material, the clamping pressure can be adjusted by the binding material, and the large magnetostrictive vibration generated in the straight portion of the wound iron core can be optimally suppressed, which is caused by the magnetostriction. Noise can be reduced.

  FIG. 4 is a longitudinal sectional view of a single-phase stationary induction battery according to a fourth embodiment of the present invention. The configuration of the lower part of the wound core 1 in the present embodiment is the same as that of the third embodiment, so the description of the operation is omitted.

  In the present embodiment, two sets of binding materials 31 and 31a are respectively applied to the rod-like members 3 applied to the inner peripheral arcs on the upper both sides of the wound core 1, and further, the bound materials 31 and 31a are applied to the upper both sides of the wound iron core 1 Tightening pressures 6a and 6c are applied to the receiving metal fitting 4 applied to the outer peripheral arc portion. The clamping pressure 6a is applied to each other substantially horizontally outward, and the clamping pressure 6c is applied substantially vertically upward. In FIG. 1, the combined force 7a of the reaction 5a of the load of the wound iron core and the stress 6a is suitably about 45 degrees with respect to the horizontal direction. By controlling the clamping pressure 6c of the binding material 31a, the direction of the resultant force with the reaction of the load of the wound iron core 1 applied to the rod-like member 3 is uniform in the radial direction of the arc portion of the upper portion of the wound iron core 1 It can be controlled accurately. As in the second embodiment and the third embodiment, the load of the wound iron core 1 applied to the rod-like member 3 applied to the inner circumferential arc portion of the upper portion of the wound iron core 1 in this embodiment is the same as that of the winding 2 and the like. It is applied to a structure other than the above, and the structure is configured to be supported by a support member (not shown).

  According to this embodiment, two sets of binding materials are applied to the rod-like members applied to the inner circumferential arcs on both sides of the upper part of the wound iron core, so that the clamping pressure of the binding materials can be controlled to different magnitudes. In addition to the function and effect of Example 1, the direction of the resultant force with the reaction of the load of the wound core can be uniformly and accurately controlled in the radial direction of the arc portion of the upper portion of the wound core. It becomes possible to simply suppress the production variation of noise.

  FIG. 5 is a longitudinal sectional view of a single-phase stationary induction battery according to a fifth embodiment of the present invention. Conventionally, a rectangular fitting was provided on the inner peripheral portion of the wound core, but by improving the rectangular fitting, the function and effect of the present invention can be obtained.

  In this embodiment, the upper and lower corners of the rectangular metal fitting 32 provided on the inner peripheral portion of the wound iron core 1 are processed into a shape 32a that protrudes in an arc by bending or cladding, etc. Are brought into contact with the inner circumferential arcs on both sides of the upper portion of the wound core 1. Here, the radius of curvature of the arc-like protruding portion 32 a is substantially the same as the radius of curvature of the inner circumferential arc portion of the wound iron core. Further, the binding material 31 is applied to the rectangular metal fitting 32 and the outer peripheral portion of the wound iron core 1 in a substantially horizontal outward direction by applying a clamping pressure 6 a.

  Also in the lower part of the wound core 1, the binding material 31 may be put between the receiving member 4 and the receiving member 4 by using the rectangular metal fitting 32, and the clamping pressure 6b may be applied substantially inward in the horizontal direction.

  According to this embodiment, since the rectangular metal fitting conventionally used is improved and used, the present invention can be practiced with a slight modification of the conventional product in addition to the function and effect of the first embodiment.

  FIG. 6 is a longitudinal sectional view of a three-phase stationary induction battery according to a sixth embodiment of the present invention. Although Examples 1 to 5 are all structural examples of the present invention for a single-phase wound core, the present invention is easily applicable to a three-phase wound core.

  In the present embodiment, a three-phase stationary induction battery configured by including three windings on a three-phase tripod-type winding iron core in which one outer winding iron core 41 is wound on the outside of two adjacent inner winding iron cores 40 It is illustrated. As in the first embodiment, the outer circumferential arcs 1a of the upper two sides of the inner wound core 40, the lower two sides of the outer wound iron core 41, and the outer circumferential arc 1b of the lower core of the central magnetic leg of the inner wound iron 40 are respectively horizontally outward. According to the present invention, by providing means for applying the stress 6a and the horizontal inward stress 6b, the resultant force with the reaction of the load of the wound iron cores 40 and 41 can be made the radial direction of the arc portion of the wound iron core. The effect of The specific means for applying the stress 6a and the stress 6b may use, for example, any configuration described in Examples 2 to 5.

  According to this embodiment, in the stationary induction appliance of the three-phase tripod configuration, the load of the winding core for stationary induction appliance having the arc-shaped corner portion is an arc-shaped corner in which the direction of the magnetostrictive vibration of the winding core is dispersed. Since the part is supported in the radial direction of the corner part, large magnetostrictive vibration generated in the straight part of the wound iron core can be suppressed, and noise due to the magnetostriction can be reduced.

  FIG. 7 is a longitudinal sectional view of a three-phase stationary induction battery according to a seventh embodiment of the present invention. In FIG. 6, the three-phase tripod wound core has been described, but three-phase five-phase winding in which four wound iron cores are arranged in parallel and three magnetic windings are wound adjacent to each other. The present invention is also applicable to a wound core having a leg configuration.

  In the present embodiment, a three-phase static induction appliance is shown in which a three-phase five-legged wound core having four wound cores 45 adjacent to one another and three windings 2 in the adjacent two wound core portions. There is. Similar to the first embodiment, the stress 6a in the horizontal outward direction and the stress 6b in the horizontal inward direction are respectively applied to the inner peripheral arc portion 1a on the upper both sides of the wound core 45 and the outer peripheral arc portion 1b on the lower both sides of the wound iron core 45 respectively. By providing such means, the resultant force with the reaction of the load of the wound iron core 45 can be made to be the radial direction of the arc portion of the wound iron core, and the effect of the present invention can be obtained. The specific means for applying the stress 6a and the stress 6b may use, for example, any configuration described in Examples 2 to 5.

  According to this embodiment, in the stationary induction appliance of the three-phase five-leg configuration, the load of the winding core for a stationary induction appliance having arc-shaped corner portions is arc-shaped in which the direction of the magnetostrictive vibration of the winding core is dispersed. Since the corner portion is supported in the radial direction of the corner portion, it is possible to suppress large magnetostrictive vibration generated in the straight portion of the wound iron core, and noise due to the magnetostriction can be reduced.

  The embodiments described above do not limit the configuration of the present invention, and the stress application means provided on the upper and lower portions of the wound core may be any combination described in different embodiments. The stress application means is not limited to the use of the binding members 31 and 31a, and the same function may be realized. For example, a stress may be applied using a ratchet structure, a turnbuckle structure or the like.

1: Winding core 1a: Inner circumferential arc portion 1b at the top of the winding core: Outer circumferential arc portion 2 at the bottom of the winding core 2: Winding wire 3: Upper rod member 3a: Lower rod member 4: Receiving bracket 5a, 5b, 5c: Reaction of load 6a, 6b, 6c: direction of applied stress 7a, 7b: direction of reaction of applied force and direction of applied stress 10: second fitting 31, 31a: binding material 32: rectangular fitting 32a: arc-like protrusion 40 : Inner wound core 41: Outer wound core 45: Three-phase five-leg wound core 50: Restraint surface

Claims (15)

A stationary induction device comprising: a wound iron core formed by laminating a large number of thin strip magnetic materials and joining open ends to each other and forming a substantially rectangular shape having arc-shaped corners; and a winding inserted into the wound iron core There,
A means for supporting the load of the wound core while applying a stress in a substantially horizontal outward direction, provided in inner circumferential arc portions on both upper sides of the upper portion of the wound core;
A means for supporting the load of the wound core while applying a stress in a substantially horizontal inward direction, provided at outer peripheral arcs on both lower sides of the wound core;
Stationary induction appliance with. In the stationary induction battery according to claim 1,
The resultant force of the reaction between the substantially horizontal stress applied to the inner circumferential arcs on the upper sides and the outer circumferential arcs on the lower sides of the wound iron core and the reaction of the load acting in the vertical direction of the wound iron core is the arc of the wound iron core A stationary induction device characterized in that it faces in the radial direction of the part. In the stationary induction battery according to claim 1,
The means for supporting the load of the wound core while applying stress in the substantially horizontal outward direction, provided in the inner circumferential arc portion on both upper sides of the wound iron core, has a rod shape having the same radius of curvature as the inner circumferential arc portion. What is claimed is: 1. A stationary induction battery comprising: a member; and a member that applies a substantially horizontal outward stress to the rod-like member. In the stationary induction battery according to claim 3,
The load of the wound iron core applied to the rod-like member is supported by a member other than the wound iron core. In the stationary induction battery according to claim 3,
The member that applies a stress to the rod-shaped member in the substantially horizontal outward direction is a first binding material that is bridged between the rod-shaped member and the arc portion of the wound iron core and applies a clamping pressure. Induction appliance. In the stationary induction battery according to claim 5, further,
A stationary induction battery comprising: a second binding material which is bridged between the rod-like member and an arc part at the top of the wound iron core and applies a clamping pressure in a substantially vertical upward direction. In the stationary induction battery according to claim 1,
The means for supporting the load of the wound core while applying stress in the substantially horizontal inner direction, provided at the outer peripheral arcs on both lower sides of the wound iron core, has the same curvature radius as the outer peripheral arcs of the lower portion of the wound iron core. What is claimed is: 1. A stationary induction battery comprising: a holder having a member; and a member for applying a stress to the holder in a substantially horizontal direction. In the stationary induction battery according to claim 7,
A member for applying a stress in a substantially horizontal inner direction to the receiving bracket abuts on side surfaces of two sets of receiving brackets applied to an outer peripheral arc portion at a lower portion of the wound iron core and applies a stress in a substantially horizontal inner direction to each other A stationary induction device characterized in that it is a fitting of two. In the stationary induction battery according to claim 7,
The member for applying a stress to the receiving bracket in a substantially horizontal inward direction is a rod provided in the inner circumferential arc portion on both lower sides of the wound core, having a substantially same radius of curvature as the inner circumferential arc portion on both lower sides of the lower core. Members,
A static induction battery comprising a binding material which is bridged between the rod-like member and the receiving bracket and applies a clamping pressure. In the stationary induction battery according to claim 1,
The inner periphery of the wound iron core is provided with a rectangular metal fitting in which the corners on both sides of the upper part project like an arc, and the radius of curvature of the arc-like projecting part is substantially the same as the radius of curvature of the inner circumference arc of the wound iron core A stationary induction battery characterized in that a load of a wound iron core is applied while applying stress in a substantially horizontal outward direction to the rectangular metal fitting. In the stationary induction battery according to claim 10,
What is claimed is: 1. A stationary induction battery comprising: a binding material that is bridged between the rectangular metal fitting and the arc portion of the wound iron core and applies a clamping pressure. A stationary induction battery according to any one of claims 1 to 11,
A stationary induction battery having a single-phase configuration in which a winding is wound around a magnetic leg portion of a single wound iron core. A stationary induction battery according to any one of claims 1 to 11,
A three-phase tripod structure in which two inner wound iron cores are adjacent to each other, one outer wound iron core is provided outside the inner wound iron core, and a three-phase winding is wound on three magnetic legs. Stationary induction appliance. A stationary induction battery according to any one of claims 1 to 11,
A stationary induction device having a three-phase five-leg configuration in which four winding cores are arranged in parallel, and three-phase winding is wound at three places where magnetic legs of the winding cores are adjacent to each other. The stationary induction battery according to any one of claims 1 to 14,
A stationary induction battery characterized in that the wound core is a thin strip of extremely thin electromagnetic steel sheet, an amorphous alloy, or a nanocrystal alloy.

Images