JP2016051850A - Stationary induction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stationary induction apparatus which can reduce a shaking transmitted from the installation surface to the stationary induction apparatus at the time of earthquake.SOLUTION: A transformer 1 is secured to an installation base 101 via an anti-vibration member 104, and further connected with the installation surface 2 via the elastic member 1051 of a regulation member 105. The installation base 101 has a plurality of rollers 103, and movable for the installation surface 2. By a vibration moderating structure including the installation base 101 and regulation member 105, transmission of the shaking of an installation surface 2 due to earthquake is suppressed, and transmission of an excitation vibration, occurring in the transformer 1 during normal operation, to the installation surface 2 is also suppressed, thus preventing impairment or short circuit fault of the transformer 1 due to earthquake, and generation of vibration sound due to excitation vibration.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stationary guidance device having a seismic reduction structure.

  Conventionally, a stationary induction device having a vibration isolation structure is known. For example, Patent Document 1 discloses a vibration isolating structure in a cubicle-type power receiving device in which a leg portion provided at a lower portion of an outer box that houses a transformer and a base of a cubicle body are fixed with a vibration isolating rubber. (See Patent Document 1, paragraph [0002] and FIGS. 7 to 9).

  The anti-vibration structure described in Patent Document 1 is a structure in which when a transformer vibrates due to excitation vibration, the vibration is absorbed by an anti-vibration rubber and vibration transmitted to the cubicle body is reduced.

Japanese Patent Laid-Open No. 11-21828

  The anti-vibration structure provided in conventional static induction devices prevents the transmission of minute vibrations due to excitation vibration to the housing and cubicle, and has the effect of suppressing large vibrations such as earthquakes. Therefore, it is difficult to effectively prevent transmission of a large ground shaking due to an earthquake to a stationary induction device.

  For this reason, stationary induction equipment shakes greatly when an earthquake occurs.For example, in the case of a transformer, there are problems such as damage to installation bolts, overturning of the transformer, ground faults due to contact with the terminal wall of the terminal, etc. there were.

  Therefore, there has been a demand for a static induction device having a seismic reduction structure that can reduce the excitation force transmitted from the ground to the static induction device when an earthquake occurs and prevent damage to the static induction device or a ground fault. It had been.

  The stationary induction device according to the first aspect of the present invention is a stationary induction device installed on an installation surface via an installation table, and the installation table is movable relative to the installation surface, Further, the stationary induction device is characterized in that an elastically deformable restricting member for restricting movement of the installation base is provided at a predetermined position outside.

  With this configuration, it is possible to suppress transmission of the shaking of the installation surface due to the earthquake to the stationary induction device.

  Further, in the static induction device according to the second aspect of the present invention, in contrast to the first aspect, the installation base is rotatably provided between the base body on which the induction device main body is mounted and the base body and the installation surface. A stationary induction device including rolling elements.

  With such a configuration, when an earthquake occurs, the installation base can easily move relative to the installation surface, and transmission of shaking of the installation surface to the stationary induction device can be appropriately suppressed.

  The static induction device according to the third aspect of the present invention is a static induction device in which the rolling element is rotatably supported by a support member provided on the base body or the installation surface. .

  The stationary induction device according to the fourth aspect of the present invention is a stationary induction device in which the rolling element is a roller compared to the second or third aspect of the invention.

  The stationary induction device according to the fifth aspect of the present invention is a stationary induction device in which the rolling element is a ball as opposed to the second or third aspect of the invention.

  With such a configuration, the stationary induction device according to any one of the third to fifth aspects of the present invention causes the installation table to move relative to the installation surface by the rotation of the roller or the ball when an earthquake occurs, thereby causing the installation surface to shake. Can be appropriately suppressed from being transmitted to the stationary induction device.

  The stationary induction device according to the sixth aspect of the present invention is the stationary guidance device according to any one of the first to fifth aspects, wherein the regulating member is disposed with a predetermined gap between the stationary member and the installation base. It is an induction device.

  Further, in the static induction device according to the seventh aspect of the present invention, with respect to any one of the first to fifth aspects, the restricting member is disposed so that no gap is formed between the stationary guide device and the installation base. It is an induction device.

  With this configuration, in the induction device according to the sixth or seventh invention, the excitation force generated in the installation base at the time of the earthquake is absorbed by the elastic deformation of the elastic member. Can be appropriately suppressed.

  The stationary induction device according to the eighth aspect of the invention is an induction device in which the restricting member is rubber relative to any one of the first to sixth aspects.

  With this configuration, the excitation force generated in the installation table when an earthquake occurs is absorbed by the elastic deformation of the rubber that is the restricting member, so that the transmission of the shaking of the installation surface to the stationary induction device can be appropriately suppressed.

  Further, in the static induction device according to the ninth aspect of the invention, with respect to any one of the first to eighth aspects, the regulating member is connected to the induction device main body and the installation surface placed on the mounting table. It is a static induction device.

  With this configuration, both the excitation force generated on the installation surface due to an earthquake and the excitation force generated on the induction device main body due to excitation vibration are reduced by elastic deformation of the regulating member, and transmission of earthquake vibration to the device main body and installation of excitation vibration Transmission to the surface can be appropriately suppressed.

  The static induction device according to the tenth aspect of the present invention is a static induction device in which the induction device main body is a transformer, as opposed to any one of the first to ninth aspects.

  With this configuration, it is possible to suppress transmission of excitation vibration generated in the transformer to the installation surface and transmission of shaking of the installation surface due to an earthquake to the transformer.

  According to the static induction device according to the present invention, it is possible to suitably prevent the stationary induction device from being damaged and the occurrence of a ground fault by suppressing the transmission of the shaking of the installation surface to the static induction device when an earthquake occurs.

Side view of transformer in embodiment 1 seen from the side The figure which looked at the lower side from the XX line of FIG. Diagram showing an example of the operation of the seismic reduction structure of the transformer when the installation surface is displaced laterally due to an earthquake The figure which shows an example of the operation of the seismic-reduction structure of the transformer when the transformer is displaced laterally by the excitation vibration The figure which shows the modification of the seismic reduction structure of the same transformer The figure which shows the modification of the structure of the installation stand of the transformer

  Hereinafter, embodiments of a stationary induction device according to the present invention will be described with reference to the drawings. In addition, since the component which attached | subjected the same code | symbol in embodiment performs the same operation | movement, description may be abbreviate | omitted again.

(Embodiment 1)
In the first embodiment, a transformer installed on the ground will be described as an example.

  FIG. 1 is a side view of the transformer 1 according to the first embodiment as viewed from the side. Moreover, FIG. 2 is the figure which looked at the lower side from the XX line | wire of FIG.

  A transformer 1 shown in FIG. 1 is an oil-filled self-cooling three-phase transformer. Since the transformer 1 of the first embodiment has a feature in the structure of vibration reduction, FIG. 1 shows a simplified external shape and internal structure of the transformer 1. Therefore, in the following description, the structure of vibration reduction of the transformer 1 will be described in detail, and the description of other configurations of the transformer 1 will be omitted or simplified.

  A transformer 1 shown in FIG. 1 is a three-phase transformer. The transformer 1 mainly includes a rectangular parallelepiped tank 110, a cooling and insulating insulating oil 111 filled in the tank 110, and a transformer main body 112 disposed in the tank 110 soaked in the insulating oil 111. Including. A large number of heat radiating fins (not shown) are provided on the side surface of the tank 110. The transformer main body 112 is a part constituting the electric circuit of the transformer 1. The transformer main body 112 includes, for example, an iron core 1121, three coils 1122A, 1122B, and 1122C wound around the rim of the iron core 1121, and a connection portion 1123.

  The coil 1122A includes a low voltage coil (secondary winding) wound around the rim and a high voltage coil (primary winding) wound concentrically around the outside of the low voltage coil. The coils 1122B and 1122C have the same configuration as the coil 1122A. Each high voltage coil of coils 1122A, 1122B, 1122C is provided with an input terminal for inputting a high voltage of 6600 volts, for example. Each low voltage coil of the coils 1122A, 1122B, and 1122C is provided with an output terminal that outputs a low voltage of, for example, 100 volts or 200 volts.

  The transformer body 112 is fixed to the frame 113, and the frame 113 is fixed to the bottom surface of the tank 10.

  On the upper surface of the tank 110, three high pressure bushings 114A, 114B, 114C and three low pressure bushings 115A, 115B, 115C are provided. The input terminals provided in the coils 1122A, 1122B, and 1122C are connected to the high voltage bushings 114A, 114B, and 114C through the connection portion 1123, respectively, and the output terminals provided in the coils 1122A, 1122B, and 1122C are connected to the connection portion. The low pressure bushings 115A, 115B, and 115C are connected to the low pressure bushings 1123, respectively.

  The lower surface of the tank 110 is installed so as to be displaceable in the horizontal direction with respect to the installation surface 2 provided on the ground G by a vibration reducing structure. In the first embodiment, the installation surface 2 is the ground surface. However, when the transformer 1 is stored in a cubicle, the bottom surface of the cubicle becomes the installation surface 2.

  The seismic reduction structure of the transformer 1 includes an installation table 101 that can move in the horizontal direction with respect to the installation surface 2, and two regulating members 105 that regulate the movement of the installation table 101 within a predetermined range. The installation base 101 includes a rectangular base body 102 in a top view and a plurality of (three in FIG. 1) rollers 103 rotatably supported by the base body 102. Abutment for bending the both ends of the longitudinal direction (lateral direction in FIG. 1) in an L shape in the same direction (downward direction in FIG. 1) and contacting an elastic member 1051, which will be described later, on the base body 102 A portion 1021 is formed.

  Further, on both side portions of the base body 102 (see the side portions of the top and bottom sides of the base body 102 in FIG. 2), support portions 1022 for supporting the rollers 103 are formed at three positions, both end portions and the central portion. Yes. The support portion 1022 is formed by bending downward a support piece that protrudes from both sides of the base body 102. In the first embodiment, the three rollers 103 are provided on the installation table 101. However, the rollers 103 can be provided with an arbitrary number of two or more.

  Bearings (not shown) are provided at the front end portions of the respective support portions 1022, and opposite ends of the shaft 1031 (see FIG. 2) of each roller 103 are connected to the opposite support portions 1022 on both sides of the base body 102. Is rotatably supported by a bearing. Accordingly, the installation table 101 can be moved in the horizontal direction (left-right direction) in FIGS. 1 and 2 as the three rollers 103 rotate. The horizontal direction (left-right direction) corresponds to the roll direction of the installation surface 2 at the time of occurrence of the earthquake at the place where the transformer 1 is installed. It is installed so that it can move in the rolling direction.

  Anti-vibration members 104 made of an elastic material are provided at the four corners of the lower surface of the transformer 1 (the lower surface of the tank 110), and the transformer 1 is fixed to the upper surface of the installation table 101 via the four anti-vibration members 104. ing. The anti-vibration member 104 is for reducing transmission of excitation vibration generated in the transformer 1 to the installation surface 2 during normal operation. In the first embodiment, rubber having a predetermined vibration isolation frequency is used as the vibration isolation member 104.

  The two regulating members 105 are fixed in a predetermined position outside the installation table 101 on the installation surface 2 in the lateral direction. The regulating member 105 includes a plate-like elastic member 1051 that can be elastically deformed, and a fixing member 1052 that fixes the elastic member 1051 to the installation surface 2. In the first embodiment, rubber is used as the elastic member 1051. The elastic member 1051 is elastically deformed when the installation table 101 relatively moves left and right with respect to the installation surface 2 due to an earthquake, and the contact portion 1021 of the table main body 102 contacts the elastic member 1051, and the installation table 101 moves. It plays a function of absorbing power.

  The fixing member 1052 is an L-shaped bracket made of a plate member whose plate surface is bent in an L shape along the longitudinal direction. The fixing member 1052 is fixed to the installation surface 2 by a plurality of fixing members 1053 (for example, screws and anchor bolts) so that the bent one plate surface stands vertically from the installation surface 2. Yes. In addition, an elastic member 1052 is fixed to the plate surface erected from the installation surface 2 of each fixing member 1052. In the first embodiment, the upper surface of each elastic member 1051 is fixed to the lower surface of the tank 110. That is, the lower surface of the tank 110 is connected to the installation surface 2 by the elastic member 1051.

The two fixing members 1052 are adjusted so that the plate surfaces erected from the installation surface 2 are opposed to each other, and the interval between the two plate surfaces is a predetermined interval L. The predetermined interval L is an interval at which the elastic member 1051 is arranged between the base body 102 and the fixing member 1052 without a gap. In other words, the interval is such that the two contact portions 1021 of the base body 102 are sandwiched between the two elastic members 1051. Therefore, when the length of the base body 102 in the longitudinal direction is L _D and the thickness of the elastic member 1052 is d, the distance L is a size satisfying L≈L _D + 2 × d (see FIG. 2).

  Since the installation table 101 is sandwiched between two elastic members 1051, the installation surface of the installation table 101 is not subjected to any lateral force greater than the force with which the elastic member 1051 starts elastic deformation. The relative movement in the lateral direction with respect to 2 is prevented by the two elastic members 1051. On the other hand, when a lateral force larger than the force at which the elastic member 1051 starts elastic deformation acts on the installation table 101, the installation table 101 is applied to the installation surface 2 while the force is absorbed by the elastic deformation of the elastic member 1051. On the other hand, when the elastic member 1051 reaches the limit in the lateral direction, the fixing member 1052 prevents the relative movement of the installation base 101. Accordingly, the relative movement of the installation base 101 in the lateral direction with respect to the installation surface 2 is limited to the range of the interval L by the two regulating members.

  In the seismic reduction structure of the first embodiment, the laterally movable installation base 101 is installed on the installation surface 2 with the two elastically deformable regulating members 105 sandwiched therebetween, and the vibration isolation member 104 is mounted on the installation base 101. Therefore, when the installation surface 2 is greatly shaken in the horizontal direction when an earthquake occurs, the installation table 101 moves relative to the installation surface 2 in the horizontal direction. The function of reducing the shaking of the installation surface 2 transmitted to 1 is achieved. Further, even when excitation vibration is generated in the transformer 1 during normal operation, the elastic member 1051 of the regulating member 105 is elastically displaced, so that the function of reducing excitation vibration transmitted to the installation surface 2 is achieved.

  Next, the operation and effect of the seismic reduction structure including the installation base 101 of the transformer 1 and the restriction member 105 will be described.

  The seismic-reduction structure shown in FIG. 1 mainly has a seismic-reduction function that reduces the transmission of shaking of the installation surface 2 to the transformer 1 when an earthquake occurs, but the installation surface 2 of the excitation vibration that occurs in the transformer 1 during normal operation. It also has an anti-vibration function that reduces transmission to the camera.

  First, the vibration reduction for the shaking of the installation surface 2 due to an earthquake will be described.

  FIG. 3 is a diagram illustrating an example of the operation of the seismic reduction structure when the installation surface 2 greatly vibrates in the lateral direction due to an earthquake. FIG. 3 is a diagram showing a state in which the installation surface 2 is displaced rightward by a distance E from the state of FIG. 1 due to an earthquake.

  In FIG. 3, M indicates the central position in the horizontal direction of the installation table 101, and N indicates the central position in the horizontal direction of the transformer 1. Since the state of FIG. 1 is a state in which no earthquake has occurred, the center position N of the transformer 1 and the center position M of the installation base 101 coincide. On the other hand, the state of FIG. 3 is a state in which the installation surface 2 is instantaneously displaced in the right direction by the distance E. Therefore, the center position M indicated by the solid line of the installation table 101 is the center position N (dotted line) of the transformer 1. The center position M) shown is shifted to the right by a distance E.

  When an excitation force F1 is generated on the installation surface 2 due to an earthquake, the transmission force of the excitation force F1 to the transformer 1 is directly transmitted to the transformer 1 by the elastic members 1051 of the two regulating members 105. The first transmission path to be transmitted and the two restriction members 105 alternately abut against the installation table 101, and the second transmission path is transmitted to the transformer 1 through the installation table 101 and the vibration isolation member 104. Can be considered.

  In the first transmission path, for example, as shown in FIG. 3, when the installation surface 2 is instantaneously displaced rightward, the elastic members 1051 of the two restricting members 105 are elastically deformed (two pieces in FIG. 3). The elastic member 1051 is deformed such that the upper part of the elastic member 1051 is bent to the left), and most of the excitation force F1 of the installation surface 2 is absorbed by the elastic deformation, so the excitation force transmitted to the transformer 1 Is much smaller than the excitation force F1. Therefore, the transformer 1 is hardly displaced in the lateral direction by the excitation force transmitted through the first transmission path, but is displaced in the lateral direction mainly by the excitation force transmitted through the second transmission path.

  In the second transmission path, for example, as shown in FIG. 3, when the installation surface 2 is instantaneously displaced in the right direction, the installation table 101 can move with respect to the installation surface 2, so that the transformer 1 Then, it moves relative to the installation surface 2 in the left direction. When the installation surface 2 is displaced in the right direction, the two elastic members 1051 sandwiching the installation table 101 are arranged such that the left elastic member 1051 is close to the installation table 101 and the right elastic member 1051 is separated from the installation table 101. Therefore, the excitation force F1 (rightward excitation force) of the installation surface 2 is transmitted to the installation table 101 via the left elastic member 1051, and one of the excitation forces F1 is transmitted. As shown in FIG. 3, the portion is absorbed by the elastic deformation (lateral contraction deformation) of the left elastic member 1051, and therefore the excitation force F 2 smaller than the excitation force F 1 is transmitted to the installation base 101. The

  When the left elastic member 1051 exceeds the limit of elastic deformation, the installation base 101 is displaced to the right while being pushed by the left regulating member 105 by the excitation force F2. That is, the rightward shaking of the installation surface 2 due to the earthquake is transmitted to the transformer 1 fixed to the installation table 101 via the vibration isolation member 104, and the transformer 1 is displaced to the right side.

  After that, when the direction of shaking of the earthquake is reversed and the displacement direction of the installation surface 2 is reversed to the left side (when the displacement direction of the two restricting members 105 is reversed to the left side), The displaced installation base 101 abuts on the right regulating member 105, and the excitation force F 1 ′ (left excitation force, not shown) of the installation surface 2 is provided via the left elastic member 1051. Will be transmitted to.

  When the installation table 101 collides with the left elastic member 1051, the rightward moving force (excitation force F2) of the installation table 101 is absorbed by the elastic deformation (lateral contraction deformation) of the elastic member 1051, and the right elasticity. When the member 1051 exceeds the elastic deformation limit, the installation base 101 is pushed by the right regulating member 105 by the exciting force F2 ′ (left exciting force, not shown) transmitted through the right elastic member 1051. Will be displaced to the left. That is, the leftward shaking of the installation surface 2 due to the earthquake is transmitted to the transformer 1, and the transformer 1 is displaced to the left side.

  Hereinafter, as the displacement direction of the installation surface 2 is reversed, the installation table 101 alternately repeats the collision operation with the elastic member 1051, and the elastic deformation of the elastic member 1051 and the installation of the installation table 101 at the time of each collision. The excitation forces F1, F1 ′ of the installation surface 2 are absorbed by the relative displacement with respect to the surface 2 and transmitted to the transformer 1.

  As described above, according to the vibration reducing structure shown in FIG. 1, the displacement of the installation table 101 relative to the installation surface 2 and the elastic member 1051 at the time of collision with the elastic member 1051 of the installation table 101 based on the displacement. Due to the elastic deformation, the transmission of the excitation forces F1, F1 ′ of the installation surface 2 due to the earthquake to the transformer 1 can be reduced.

  Next, vibration isolation against excitation vibration will be described.

  FIG. 4 is a diagram illustrating an example of the operation of the seismic reduction structure when the transformer 1 slightly vibrates in the lateral direction due to excitation vibration during normal operation. FIG. 4 is a diagram showing a state in which the transformer 1 is displaced rightward by a minute distance e from the state of FIG. 1 due to excitation vibration. 4 is a state in which the transformer 1 is instantaneously displaced to the right by a distance e due to excitation vibration, the central position N indicated by the solid line of the transformer 1 is the central position M (dotted line of the installation base 101). Is shifted to the right by a distance e with respect to the center position N). In FIG. 4, the distance e is exaggerated from the actual case for the convenience of drawing.

  When excitation vibration is generated in the transformer body 112 during normal operation and a lateral excitation force F3 is generated in the transformer 1 due to the excitation vibration, the transmission path of the excitation force F3 to the installation surface 2 is also changed. One transmission path and a second transmission path are conceivable.

  In the first transmission path, the tank 110 is fixed to the installation surface 2 via an elastic member (rubber) 1051, so that the elastic member 1051 is elastically deformed (the upper portions of the two elastic members 1051 in FIG. 3). The vibration force F3 acting on the transformer 1 is absorbed and the vibration force F4 (<F3) with the vibration force F3 sufficiently reduced is transmitted to the installation surface 2. Is done.

  In the second transmission path, both ends of the installation table 101 are sandwiched between the two elastic members 1051, so that the installation surface 2 passes through the installation table 101 from the vibration isolation member 104 to the transmission path of the excitation force F 3. (Hereinafter referred to as “transmission path A”) and when transmitted from the vibration isolation member 104 to the installation surface 2 through the installation table 101 and the elastic member 1051 (hereinafter referred to as “transmission path B”). .) Occurs.

  A part of the vibration force F3 is absorbed when the vibration isolation member (rubber) 104 is elastically deformed (see the elastic deformation in which the upper parts of the two vibration isolation members 104 in FIG. 4 are shifted to the right). However, since the installation table 101 is not fixed to the installation surface 2, the reduction amount of the excitation force F <b> 3 by the vibration isolation member 104 is fixed to the installation surface 2. Smaller than the case.

  However, in the first embodiment, when the both ends of the installation base 101 are sandwiched between two elastic members 1051 and the installation base 101 is displaced in the lateral direction, the elastic deformation of the elastic member 1051 (the elastic member on the right side in FIG. 4). Since the horizontal movement force of the installation table 101 is absorbed by the elastic deformation 1051 contracted in the horizontal direction)), the lateral displacement amount of the installation table 101 can be reduced to a grade. This prevents a reduction in the vibration isolation effect of the vibration isolation member 104 due to the displacement of the installation base 101.

  Therefore, in the transmission path A, the excitation force F3 generated in the transformer 1 due to the excitation vibration is sufficiently reduced by the elastic deformation of the vibration isolation member 104 and transmitted to the installation table 101, and further, the excitation force transmitted to the installation table 101 is transmitted. The force F3 is transmitted to the installation surface 2 through the rollers 103.

  On the other hand, in the transmission path B, the excitation force transmitted from the installation base 101 to the two elastic members 1051 is caused by elastic deformation of each elastic member 1051 (elastic deformation in which the right elastic member 1051 in FIG. 4 contracts in the lateral direction). Therefore, the excitation force transmitted from each elastic member 1051 to the installation surface 2 is sufficiently reduced.

  As described above, the excitation vibration generated in the transformer 1 during normal operation is reduced by the elastic deformation of the vibration isolation member 104 and the elastic member 1051 provided in the transmission path to the installation surface 2, and the installation surface 2 caused by the excitation vibration. Can be sufficiently suppressed.

  As described above, according to the first embodiment, the earthquake-reducing structure including the installation base 101 and the regulating member 105 that can move the transmission of the earthquake vibration from the installation surface 2 to the transformer 1 when an earthquake occurs is preferable. Can be suppressed. Thereby, various accidents, such as the fall of the transformer 1, damage, and a ground fault, can be prevented suitably.

  Further, according to the first embodiment, transmission of vibration generated in the transformer 1 due to excitation vibration or the like during normal operation to the installation surface 2 is also suitably suppressed by the vibration reducing structure including the installation table 101 and the regulating member 105. be able to. Thereby, it is possible to suitably prevent an unpleasant vibration sound from being generated or adversely affecting other devices via the installation surface 2.

  Further, according to the first embodiment, it is possible to provide an anti-vibration structure having an anti-vibration function and an anti-vibration function with a simple structure without reducing the anti-vibration effect of the conventional anti-vibration rubber.

In FIG. 1, two elastic members 1051 are brought into contact with both contact portions 1021 of the base body 102 so that no gap is generated between the base body 102 and the elastic member 1051. As shown, a gap 106 may be provided between the contact portion 1021 and the elastic member 1051. That is, if the size of the gap 106 is k, the interval L may be set to a size satisfying L≈L _D + 2 × (d + k).

  In this case, since both the abutting portions 1022 of the installation base 101 are not in contact with the elastic members 1051 respectively, for example, when the installation surface 2 is instantaneously displaced in the right direction due to an earthquake, the applied force generated on the installation surface 2 is increased. The vibration force F1 is not immediately transmitted to the installation table 101 via the left elastic member 1051, but comes into contact with the left contact portion 1021 of the installation table 101 by moving the left elastic member 1051 to the right side by the gap k. Then, it is transmitted to the installation table 101. That is, the elastic member 1051 on the left side collides with the installation base 101 after moving to the right side by the distance k, and therefore the collision force (excitation force F1 of the installation surface 2) is used as the elasticity of the elastic member 1051. It can be effectively absorbed by deformation (shrinkage deformation). Thereafter, when the displacement direction of the installation surface 2 is reversed and the elastic member 1051 on the right side collides with the installation table 101, the collision force (excitation force F1 ′ of the installation surface 2) is used as an elastic deformation of the elastic member 1051 ( (Shrinkage deformation) can be effectively absorbed.

  Therefore, even in this case, the displacement of the installation surface 2 due to the earthquake is caused by the relative displacement of the installation table 101 with respect to the installation surface 2 and the elastic deformation of the elastic member 1051 when the installation table 101 collides with the elastic member 1051 based on the displacement. Transmission of the excitation forces F1, F1 ′ to the transformer 1 can be suitably reduced.

  In the first embodiment, a plurality of rollers 103 are rotatably provided on the base body 102 and the transformer 1 is configured to be movable in the lateral direction. However, as shown in FIG. A plurality of balls 107 may be rotatably provided, and the transformer 1 may be configured to be movable in an arbitrary direction.

  FIG. 6 is a view as seen from the same direction as FIG. 2, but the anti-vibration member 104 is omitted for convenience of drawing. A plurality of balls 107 are rotatably provided on the lower surface of the table main body 102 by bearings 108 in the table main body 102 shown in FIG. Abutting portions 1021 are also provided on both sides of the base body 102 along the longitudinal direction, and four restricting members 105 are provided on each of the upper, lower, left and right sides so as to surround the periphery of the base body 102. The four regulating members 105 are fixed at predetermined positions on the installation surface 2 so that the elastic members 1051 come into contact with the contact portions 1021 of the base body 102 facing each other.

  In the configuration of FIG. 6 as well, a gap 106 may be provided between the four contact portions 1021 of the base body 102 and the four elastic members 1051 facing the contact portions 1021.

  The transformer 1 shown in FIG. 1 and FIG. 2 is configured to be installed on the installation surface 2 so that the moving direction of the installation base 101 is matched with the shaking direction when the shaking direction of the transformer 1 due to the earthquake is known in advance. However, in the modified example of the base body 102 in which the plurality of balls 107 shown in FIG. 6 are rotatably provided, the transformer 1 can be displaced in the direction of the shaking according to the shaking of the earthquake when the earthquake occurs. There is an advantage that there is no restriction on the installation direction of the transformer 1.

  In the first embodiment, the upper end of the elastic member 1051 is fixed to the lower surface of the tank 110, but the upper end of the elastic member 1051 may not be fixed to the lower surface of the tank 110. In this case, the upper end of the elastic member 1051 may be brought into contact with the lower surface of the tank 110 or may be separated. In the configuration in which the upper end of the elastic member 1051 is in contact with the lower surface of the tank 110, when the elastic member 1051 is displaced due to an earthquake, the elastic member 1051 is elastically deformed while sliding on the lower surface of the tank 110. The vibration of the installation surface 2 can be reduced by friction and elastic deformation of the elastic member 1051.

  In the configuration in which the upper end of the elastic member 1051 is separated from the lower surface of the tank 110, as described above, the vibration of the installation surface 2 is reduced by the movable installation table 101 and the two elastic members 1051 sandwiching the installation table 101. Can be made.

  In addition, in FIG. 1, FIG. 2, or FIG. 6, the rolling body capable of rolling the installation surface 2 such as a plurality of rollers 103 or balls 107 is rotatably supported on the base body 102. The plurality of rollers 103 or balls 107 may be configured to be rotatable between the base body 102 and the installation surface 2. For example, the plurality of rollers 103 or balls 107 are rotatably supported on the installation surface 2. Also good.

  Alternatively, the support member for rotatably supporting the plurality of rollers 103 or the balls 107 is eliminated, and the plurality of rollers 103 or the balls 107 are rotatably disposed between the base body 102 and the installation surface 2. There may be. In this case, it is preferable to provide a regulating member that regulates the movement range for each roller 103 or each ball 107. In addition, a rolling element is not limited to a roller and a ball | bowl, The other member which can roll the installation surface 2 can be used.

  In the first embodiment described above, the seismic reduction structure provided in the transformer has been described. However, the present invention can also be applied to stationary induction devices arranged on the ground other than the transformer.

  As described above, the stationary guidance device according to the present invention can prevent the ground guidance device from being damaged and the occurrence of a ground fault by suppressing the transmission of ground shaking to the stationary guidance device when an earthquake occurs. It has the effect of preventing transmission of excitation vibration generated in the stationary induction device to the installation surface even during normal operation, and is useful as a stationary induction device installed on the ground.

DESCRIPTION OF SYMBOLS 1 Transformer 101 Installation stand 102 Stand main body 1021 Contact part 1022 Support part 103 Roller (rolling element)
1031 Shaft 104 Anti-vibration member 105 Restriction member 1051 Elastic member 1052 Fixing member 1053 Fixing member 106 Crevice 107 Ball (rolling element)
108 Bearing 110 Tank 111 Insulating oil 112 Transformer body 1121 Iron core 1122 Coil 1123 Connection section 112 Three-phase transformer body 113 Frame 114 High-pressure bushing 115 Low-pressure bushing 2 Installation surface

Claims (10)

A stationary induction device installed on the installation surface via an installation table,
The installation table is movable relative to the installation surface,
A stationary induction device characterized in that an elastically deformable restricting member for restricting movement of the installation table is provided at a predetermined position outside the installation table on the installation surface. The installation table is
A base body on which the device body is mounted;
A rolling element rotatably provided between the base body and the installation surface;
The stationary induction device according to claim 1, comprising:   The stationary guide device according to claim 2, wherein the rolling element is rotatably supported by a support member provided on the base body or the installation surface.   The static induction device according to claim 2 or 3, wherein the rolling element is a plurality of rollers.   The stationary guide device according to claim 2, wherein the rolling element is a plurality of balls.   The stationary guide device according to any one of claims 1 to 5, wherein the restriction member is disposed with a predetermined gap between the restriction member and the installation base.   The stationary guide device according to any one of claims 1 to 5, wherein the restricting member is disposed so that no gap is generated between the restricting member and the installation base.   The stationary induction device according to any one of claims 1 to 7, wherein the restriction member is rubber.   The stationary guide device according to any one of claims 1 to 8, wherein the regulating member is connected to a device main body placed on the installation base and the installation surface.   The stationary induction device according to any one of claims 1 to 9, wherein the induction device main body is a transformer.

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