JP2019046866A - Vibration reduction device for electric power device - Google Patents

Abstract

To provide a vibration reduction device for an electric power device that protects an electric power device such as a transformer from earthquake motion.SOLUTION: A cabinet is constructed by providing a peripheral wall 2A, a ceiling wall, and a front door in a cabinet frame 2 in the shape of a rectangular three-dimensional frame, and a seismic frame 12 assembled in a rectangular three-dimensional frame is installed inside the cabinet, and an electric power device 5 whose bottom is supported by an anti-vibration support frame is installed inside the seismic frame 12, a displacement suppression block is interposed between horizontal frame members 12b, 12c, and 12d of the seismic frame 12 and the cabinet frame 2 adjacent to the horizontal frame member, and a vibration reduction member is arranged in the upper part of the electric power device side wall with a gap between the upper part of the electric power device side wall and the seismic frame 12.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vibration reduction device that protects power equipment such as a transformer from seismic motion.

Transformers, also called transformers and transformers, are power devices for stepping down to 100 V or 200 V using electromagnetic induction coils for high voltages such as 6600 V supplied from a power company, and they are used in many buildings and factories. is set up.
Conventionally, in order to prevent the propagation of the vibration generated from the transformer, the transformer is elastically supported by using a vibration-proof material such as a vibration-proof rubber. (Refer to patent documents 1, 2 etc.)
For example, as shown in FIG. 20 (a), the transformer 101 is installed on a mount 100, and the transformer 101 is elastically supported by a vibration-proof material 102 such as a vibration-proof rubber or a spring damper incorporated in the mount 100. 100 is installed on the floor 103. The transformer 101 is elastically supported on the floor 103 by this support structure, and as a result of the vibration of the transformer 101 being absorbed by the anti-vibration material 102, the vibration noise of the transformer 101 is not transmitted to the surroundings.

A stand 100 having a general anti-vibration function of this type includes an upper stand 100 a for installing the transformer 101, a lower stand 100 b for installing on the floor 103, and a guard intervened between the two stands. The vibration material 102 is provided, and the vibration generated by the operation of the transformer 101 can be absorbed by the vibration-proof material 102.
However, when a large earthquake or the like occurs, there is a risk that the transformer 101 may swing with an amplitude larger than expected. For example, as shown in FIG. 20 (b), when the transformer 101 accommodated inside the cabinet 105 swings with an amplitude larger than expected, the upper part of the transformer 101 collides with the side wall of the cabinet 105 and the cabinet 105 Or damage to the wiring of the transformer 101 or the like.
Therefore, the applicant of the present application previously supported the transformer damping device configured to support the upper part of the transformer with a horizontally extending bolt arm in Patent Documents 3 and 4 below, and to support the bolt arm with an elastic material. is suggesting.

Japanese Patent Application Laid-Open No. 8-8122 JP, 2005-251842, A JP, 2013-211510, A JP, 2016-001656, A

In the vibration reduction device described in the above-mentioned Patent Documents 3 and 4, the transformer is accommodated inside the rectangular frame-shaped seismic frame assembled with steel materials, and a plurality of bolt arms are provided inside the seismic frame via an elastic material. The upper part of the transformer is elastically supported by multiple bolt arms.
The vibration damping device described in the above Patent Documents 3 and 4 can suppress unexpected rolling of the upper portion of the transformer, and provide a vibration damping device capable of preventing disconnection or shorting of the upper portion of the transformer due to earthquake vibration. I was able to.

  However, as a result of further researches by the inventors of the present invention, even if the upper part of the transformer is restrained by a bolt arm, the earthquake resistance of the steel material is strong even when the vibration is severe and strong vibration acts as in the case of the Great East Japan Earthquake. It has been found that the upper part of the aseismatic frame may collide with the cabinet as a result of the frame upper part rolling largely inside the cabinet. And, as a result of the excitation test conducted by the present inventors, when the upper part of the aseismatic frame collides with the cabinet due to the large lateral vibration, the door of the cabinet is shocked even though the door of the cabinet is locked depending on the situation. It has been found that this may cause a problem of opening, and also causes a problem such as deformation of a portion of the bottom of the cabinet so as to lift up.

  The present invention has been made in view of the above problems, and in a structure in which a power device surrounded by a seismic frame is housed in a cabinet, the seismic frame collides violently with the inner surface of the cabinet even if a large earthquake causes lateral motion. It is an object of the present invention to provide a vibration control device for electric power equipment which can prevent the damage and deformation of the cabinet and the damage of the electric power equipment.

(1) In order to solve the above problems, the vibration damping device for electric power equipment of the present invention comprises a cabinet frame having a rectangular three-dimensional frame-like cabinet frame with a peripheral wall, a ceiling wall and a front door. A seismic frame assembled in the form of a three-dimensional frame is installed, and a power device whose bottom is supported by a vibration isolation frame is installed inside the seismic frame, and adjacent to the horizontal frame of the seismic frame and the horizontal frame Between the power equipment side wall upper part and the aseismatic frame, there is disposed a vibration reduction member facing the power equipment side wall upper part with a gap therebetween. It is characterized by

The transformer supported by the anti-vibration base is further surrounded by a plurality of damping members on the upper side wall thereof, and the transformer is swayed by the anti-vibration base. For this reason, it is possible to suppress transmission of vibration during operation of the transformer to the outside.
When a large shake is applied to the transformer due to an earthquake or the like, the transformer collides with the vibration damping member surrounding the upper part of the transformer with a gap, and the upper part of the aseismic frame tends to largely shake. However, since the displacement suppression block installed between the seismic frame upper portion and the cabinet frame fills the gap between the seismic frame upper portion and the cabinet frame, the upper portion of the seismic frame is hit against the cabinet frame via the displacement suppressing block. As a result, the upper part of the seismic frame does not collide with the inside of the cabinet frame.

For this reason, even if a large shaking acts on the transformer and the cabinet containing it due to an earthquake etc., the aseismatic frame does not exert a large impact on the cabinet frame, so the door of the cabinet is unexpectedly even in the case of a large earthquake. It will never open and there will be no deformation or damage to any part of the cabinet.
The upper part of the aseismic frame tries to roll the largest by shaking such as earthquakes, but since the displacement suppression block is buried between the upper part of the aseismic frame and the cabinet frame, it is possible to efficiently suppress severe shaking of the aseismic frame It is possible to suppress the impact of the aseismatic frame against the cabinet frame.

(2) In the vibration damping device for electric power equipment of the present invention, the displacement suppression block is provided so as to stand from the substrate inserted between the seismic frame and the cabinet frame and at least three sides of the substrate. A side plate, a bolt type support shaft member provided so as to be slidable in the thickness direction of the substrate by penetrating the substrate in the thickness direction, and the support shaft member being screwed with the support shaft member A plurality of adjustment nuts for adjusting the insertion position of the shaft member, and a foot member attached to one end of the support shaft member and pressed against the side of the cabinet frame facing the substrate. Can be adopted.

  The displacement suppression block is formed in a block shape having at least three side plates around the periphery of the substrate, and is interposed between the seismic frame and the cabinet frame. For this reason, when one of the side plates is fixed to the seismic frame and the displacement suppression block is inserted between the seismic frame and the cabinet frame, the gap between the seismic frame and the cabinet frame should be filled with the displacement suppression block. Can. Further, if the foot member is provided at one end of the support shaft member penetrating the substrate, the position of the foot member is adjusted in a state where the displacement suppressing block is inserted in the gap between the upper part of the seismic frame and the cabinet frame, The foot member can be pressed against the inner surface of the cabinet frame. In this case, since the gap between the aseismatic frame and the cabinet frame is closed with the foot member in addition to any of the side plates of the displacement suppression block, displacement occurs even if the upper side of the aseismic frame sways in any direction in the cabinet frame due to a large earthquake. The side plate or the foot member of the control block can suppress the lateral vibration of the aseismatic frame, and the phenomenon that the upper portion of the aseismic frame collides with the cabinet frame can be prevented.

(3) In the vibration damping device for electric power equipment of the present invention, the displacement suppression blocks are respectively attached to upper corner portions of the seismic frame, and the displacement suppression blocks push the respective foot members to the cabinet frame adjacent thereto. It is possible to adopt a configuration in which the adjustment nut on the other end side of each of the support shaft members is disposed toward the inside of the cabinet.

  By providing the displacement suppressing block at each of the upper corner portions of the seismic frame, it is possible to fill all the gaps in the four peripheral directions between the seismic frame upper portion and the cabinet frame with the displacement suppressing block. Therefore, even if the upper part of the aseismic frame rolls in any direction due to a large earthquake, the aseismatic frame can mitigate the impact colliding with the cabinet frame, thereby preventing the deformation and damage of the cabinet, and the earthquake sway It is possible to suppress the phenomenon that the door of the cabinet is opened. In addition, it is possible to suppress that the aseismatic frame collides with the inner surface of the cabinet frame and damages the cabinet due to a large earthquake shake.

(4) In the vibration-damping device for electric power equipment of the present invention, the transformer has a side wall and a ceiling wall, and a plurality of cooling fins are provided in a projecting manner at a portion excluding the side wall upper end portion. A flat portion is formed above the upper end of the cooling fin, a horizontal member of the seismic frame is formed at the same height as the flat portion, and the vibration damping member is arranged to face the flat portion. It is possible to adopt a configuration attached to the support.

(5) In the vibration damping device for electric power equipment of the present invention, the cabinet frame includes four columns made of steel, an upper frame member obtained by connecting upper ends of these four columns, and lower ends of the four columns. The lower frame member is connected and assembled in a rectangular three-dimensional frame shape, and the aseismatic frame is a rectangular three-dimensional member including four support members made of steel and a cross member connecting the upper ends of the four support members. It is possible to adopt a configuration in which the support members of the earthquake-resistant frame are arranged in a frame shape, in close proximity to the inner side of the support of the cabinet frame, and the displacement suppressing block is attached to the cross member.

  A rigid cabinet frame can be constructed by the four steel columns and the upper frame material and the lower frame material, and a strong earthquake-resistant frame can be constructed by the four steel column members and the horizontal bridge material. Even with a strong cabinet frame and earthquake-resistant frame constructed of steel materials, there is a risk that both frames will partially collide with each other due to a large earthquake or other vibration, in which case the displacement suppression block effectively collides the two frames. Since it relieves, it contributes to the deformation prevention and damage prevention of the cabinet.

(6) It is preferable that the said displacement suppression block was attached to the said horizontal member via the thickness adjustment liner in the damping device for electric power equipment of this invention.
When attaching the displacement restraining block to the cross member, the gap between the displacement restraining block and the column of the cabinet can be appropriately filled by attaching to the cross member using a suitable thickness adjustment liner.

The vibration reduction apparatus for electric power equipment according to the present invention is a large vibration that may be shaken by an earthquake or the like, the upper part of the aseismic frame may roll inside the cabinet frame, and the upper part of the aseismic frame may contact the cabinet frame. In this case, the displacement suppression block installed at the top of the seismic frame mitigates the impact due to the collision between the top of the seismic frame and the cabinet frame.
For this reason, even if a large shaking acts on a cabinet containing power equipment such as a transformer due to an earthquake or the like, the door of the cabinet is not unnecessarily opened, and a part of the cabinet may be deformed or damaged. Absent.
The upper part of the aseismatic frame tries to shake the largest by shaking such as earthquake, but since the displacement suppression block is buried between the upper part of the aseismic frame and the cabinet frame, it is possible to suppress the lateral shake of the aseismatic frame upper part This can prevent a heavy impact phenomenon of the upper part of the aseismatic frame against the cabinet frame.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows an example of the transformer storage cabinet to which the damping device for electric power equipment of 1st Embodiment which concerns on this invention is applied. The perspective view which shows an example of the frame of the said cabinet, the aseismatic frame accommodated in this cabinet, and an oil-filled transformer (electric power apparatus). The perspective view which shows an example of the anti-vibration mount which mounts the said oil-filled transformer. The front view which shows an example of the frame of the said cabinet, the aseismatic frame accommodated in this cabinet, and an oil-filled transformer (electric power apparatus). The perspective view which shows an example of the displacement suppression block inserted between the flame | frame of the said cabinet, and the said aseismatic frame. The perspective view of the displacement control block. The top view which shows an example of the attachment state of the displacement suppression block. The front view which shows the aseismatic frame which accommodated the oil-filled transformer inside, and a part of cabinet frame. The side view which shows a part of the earthquake-resistant flame | frame which accommodated the oil-filled transformer inside, and a cabinet flame | frame. The perspective view which shows the aseismatic frame which accommodated the oil-filled transformer inside, and a part of cabinet frame. The top view which shows a part of the earthquake-resistant flame | frame which accommodated the oil-filled transformer inside, and a cabinet flame | frame. The figure which shows the positional relationship of the oil-impregnated transformer installed in the inside of a seismic frame, and the damping member attached to the upper part of a seismic frame. The top view which shows an example of the transformer storage cabinet which applied the damping device for electric power equipment of 2nd Embodiment which concerns on this invention to a mold type | mold transformer. The perspective view which shows an example of the same transformer storage cabinet. The perspective view which shows the support part of a mold-type transformer about an example of the same transformer storage cabinet. The figure which expands and shows the support part of a mold type | mold transformer about an example of the same transformer storage cabinet. The front view which shows the relationship between a mold type | mold transformer and an aseismic frame about an example of the same transformer storage cabinet. The side view which shows the relationship between a mold type | mold transformer and an aseismic frame about an example of the same transformer storage cabinet. The perspective view which shows an example of the vibration test result in the structure which is not equipped with the said displacement suppression block. An example of the installation condition of the conventional transformer is shown, (a) is a front view which shows the normal state which the shake of the earthquake does not act, (b) is a front view which shows an example of the state where the shake of the earthquake acts .

  Hereinafter, the vibration-damping device for electric power devices which is embodiment of this invention is demonstrated in detail, referring FIGS. 1-12. In the drawings used in the following description, in order to make the features easy to understand, the features that are the features may be enlarged for the sake of convenience, and the dimensional ratio of each component may be limited to the same as the actual Absent.

First Embodiment
FIG. 1 shows a cabinet 1 for housing a transformer, to which the vibration damping device for electric power equipment according to the first embodiment of the present invention is applied. This cabinet 1 has a rectangular three-dimensional frame shape as shown in FIG. The cabinet frame 2 is provided with a peripheral wall 2A including left and right side walls and a back wall, and a ceiling wall 2B and front doors 2C and 2C. In this embodiment, a front door 2C adopts a double door type door, and a lever handle lock 2K is provided at the center of the adjacent portion of the front door 2C.
As shown in FIG. 2, the cabinet frame 2 comprises four columns 2a made of L-shaped steel, four upper frame members 2b connecting the upper ends of the four columns 2a, and four columns 2a. It is formed in rectangular solid frame shape from the four lower frame members 2d which connected the lower end part of. The support 2a is made of an L-shaped steel material in which two band plates 2f are integrated in an L shape at a corner 2e.
Of the four columns 2a constituting the cabinet frame 2, the distance between the columns 2a spaced apart in the front-rear direction is smaller than the distance between the columns 2a spaced apart in the left and right direction. Therefore, in the cabinet 1 of this embodiment, the width of the left and right is formed larger than the depth of the front and rear.

In the cabinet frame 2, the columns 2 a are arranged such that their corners 2 e face the outside of the cabinet 1 and occupy corner portions of four corners of the cabinet 1. Also, the upper frame material 2b and the lower frame material 2d made of L-shaped steel material are also disposed with the corners 2e facing the outside of the cabinet 1, and these frame materials 2b and 2d and the support 2a are jointing means such as welding. Integrated by
The cabinet 1 is fixed to a floor surface on which the cabinet 1 is installed by fixing means such as bolting, and a transformer (electric power apparatus) 5 supported by the anti-vibration mount 3 is accommodated at the center inside of the cabinet 1.

As shown in FIG. 3 as an example, the anti-vibration mount 3 includes a lower mount 3A and an upper mount 3B which are frame-shaped rectangular in plan view. Each of the mounts 3A and 3B includes a corner member 6 disposed at each of four corner portions and a frame 7 mounted so as to bridge between the corner members 6. A stopper bolt 8 is provided so as to partially vertically penetrate corner members 6 arranged up and down at the corner portion in the vibration-proof mount 3, and the distance by which the upper and lower mounts 3A, 3B can be separated is limited.
The corner member 6 is formed in a U shape including an upper plate 6a, a lower plate 6b, and a side plate 6c, and a stopper which penetrates the lower plate 6b of the corner member 6 located above and the upper plate 6a of the corner member 6 located below. A plurality of restriction nuts 10 are screwed into the bolt 8. The restriction nut 10 is disposed at a position sandwiching the lower plate 6b of the upper corner member 6 from above and below and a position of sandwiching the upper plate 6a of the lower corner member 6 from above and below. By adjusting the screwing position of these restriction nuts 10 with respect to the stopper bolt 8, the distance by which the lower mount 3A and the upper mount 3B can be separated is limited.

For example, the stopper bolt 8 slightly longer than the distance between the lower plate 6b of the upper corner member 6 and the upper plate 6a of the lower corner member 6 is provided, and the restriction nuts 10 are provided on the upper and lower ends of the stopper bolt 8 It can be screwed together. By this structure, both are connected via the stopper bolt 8 so that both the upper corner member 6 and the lower corner member 6 can be separated by a predetermined distance until they hit the upper and lower regulating nuts 10.
In the vibration-proof mount 3, a plurality of vibration-proof members 9 made of an elastic material such as a coil spring or an elastic resin is interposed in a portion between the upper and lower frames 7, 7. Further, the anti-vibration mount 3 is disposed with its long side parallel to the long side of the bottom of the cabinet 1 and fixed to the floor at the center of the bottom of the cabinet 1 by means such as bolting.

In this embodiment, as shown in FIG. 2, FIG. 4 and FIG. 8, the transformer 5 is an oil-filled transformer (power device) and is provided upright on the bottom wall 5A rectangular in plan view and the bottom wall 5A. It has an outline of a rectangular box type having four side walls 5B and a ceiling wall 5C provided so as to cover the upper portions of the side walls 5B. The transformer 5 in this example is formed at a height slightly lower than half the height of the cabinet 1, and both the width and the depth thereof are formed smaller than the width and the depth of the cabinet 1.
A plurality of vertical fins 5D extending outward from the bottom to the top of the four side walls 5B of the transformer 5 are provided in a projecting manner. Of the four side walls 5B, approximately 15 vertical fins 5D are provided at predetermined intervals on the larger side wall 5B, and approximately 6 vertical fins 5D are predetermined on the smaller side wall 5B. Protruding at intervals of Further, a curved wall 5E (see FIG. 8, FIG. 11, and FIG. 12) connecting these side walls is formed at the connecting portion between the wide side wall 5B and the small side wall 5B, that is, the side wall corner portion of the transformer 5. The vertical fins 5D are also provided on the outside of the curved wall 5E.

The upper end of each fin 5D is extended to a position slightly lower than the upper end of the side wall 5B, and a flat portion 5a where the fin 5D is not formed is formed at the upper end of the side wall 5B above the upper end of the fin 5D There is.
In addition, although wiring, wiring facilities, etc. for transformers are provided above the position which installed the transformer 5 in the cabinet 1, display of such wiring, wiring facilities, etc. is abbreviate | omitted in drawing of this-application specification. .
Further, as shown in FIGS. 2 and 10, a plurality of primary terminals 5F for power input / output and a secondary terminal 5G are formed on the ceiling wall 5C of the transformer 5, and an oil inlet and outlet formed adjacent to them. A cover plate 5H for closing the cover is installed, and further equipment such as an oil level thermometer 5I and a bushing 5J are attached. In addition, although a power cable etc. are connected to these terminals, description is abbreviate | omitted in the figure.

A seismic frame 12 in the form of a rectangular three-dimensional frame is provided so as to surround the transformer 5 and be positioned inside the cabinet frame 2.
The anti-vibration frame 12 is disposed slightly inward of the four columns 2 a of the cabinet frame 2 and has four column members 12 a of steel material extended to the same height as the ceiling wall 5 C of the transformer 5 There is. As shown in FIG. 2, four support members 12 a are supported by bottom plates 2 A laid at the left and right bottoms of the cabinet 1, and four support members 12 a are provided so as to surround the transformer 5. The horizontal members 12b, 12b, 12c, and 12c are connected to the upper end portions of the four support members 12a so as to be positioned at substantially the same height as the upper end portions of the side walls of the transformer 5 The side wall upper end portion of the transformer 5 is surrounded by these four horizontal members.
Of the four horizontal members, the two horizontal members 12b arranged on the long side of the transformer 5 are supported by joining their both ends to the left and right support members 12a. The lateral members 12c disposed on the side are supported by joining their ends to the front and rear support members 12a. In the transformer 5, the horizontal bridge 12b is arranged to face the upper end of the larger side wall 5B, and the horizontal bridge 12c is arranged to face the upper end of the smaller side wall 5B. There is.

  A brace member 13 is connected in an X-shape between two support members 12 a located on the left and right sides of the front of the cabinet 1. The brace member 13 is also connected in an X-shape between the two support members 12 a located on the left and right sides of the back of the cabinet 1. The connection between the brace member 13 and the support member 12 is connected by connection means such as bolting, and the connection of the cross members 12b and 12c to the support member 12a is also connected by connection means such as bolting.

  Next, a support frame 14 made of a channel material extending in the horizontal direction along the outer side of the cross member 12c on the short side of the seismic frame 12 is attached along the cross member 12c on the short side. Both ends of the support frame 14 are extended to near the columns 2 a of the cabinet frame 2. A displacement suppressing block 20 having a configuration described below is attached to each end of the support frame 14 by joining means such as bolting.

  The displacement suppressing block 20 is formed in a block shape including a rectangular substrate 20a and side plates 20b erected from three peripheral portions of the substrate 20a as shown in FIGS. 5 to 7, and the side plate 20b in the substrate 20a. A screw hole 20c penetrating in the thickness direction is formed in a portion close to the peripheral portion on the side not provided with a bolt, and a bolt type support shaft member 21 is screwed into this screw hole 20c.

The support shaft member 21 is formed to be slightly longer than the height of the side plate 20b, and a cone-shaped foot member 25 is provided at one end side in the length direction of the support shaft member 21 (end on the side extending along the side plate 20b). The adjustment nut 26 is screwed on the other end side in the length direction of the support shaft member 21 (the side on which the side plate 20b is not provided). Further, the adjustment nut 27 is also screwed into a portion between the support shaft member 21 penetrating the substrate 20 a and the foot member 25.
The screw hole passing position of the support shaft member 21 can be changed by rotating the support shaft member 21 inserted into the screw hole 20c of the substrate 20a, thereby changing the projecting position of the foot member 21 with respect to the substrate 20a. Can. The position adjustment of the adjustment nuts 26 and 27 is performed so as to sandwich the position where the screw hole 20 c is inserted in the support shaft member 21, and the substrate 20 a is sandwiched by the adjustment nuts 26 and 27. The position of the foot member 25 can be fixed. In addition, as shown in FIGS. 5-7, it is preferable that the damper member 25a which consists of board | plate material of an elastic body is stuck by the outer surface of the foot member 25. As shown in FIG.

Of the three side plates 20b in the displacement suppression block 20, two insertion holes 20d are formed apart from each other in the central side plate 20b.
As shown in FIG. 7, an end wall 14a is formed at each end of the support frame 14, the side plate 20b of the displacement suppressing block 20 is in contact with the end wall 14a, and a screw shaft 24a of a bolt 24 penetrating them is used. The displacement suppression block 20 is fixed to the end of the support frame 14.
As shown in FIG. 11, the displacement suppression block 20 is fixed to the support frame 14 with the tip end side of the support shaft member 21 facing the inside of the cabinet, and the damper member 25a of the foot member 25 is supported as shown in FIG. It is positioned so as to press against the strip 2f of 2a. In addition, an adjustment liner 28 having an appropriate thickness is interposed between the displacement suppression block 20 and the support frame 14.
The distance between the displacement suppressing block 20 and one of the band plates 2f is adjusted by selecting the adjusting liner 28 having a suitable thickness, and the screwing position adjustment of the support shaft member 21 faces the damper member 25a. The distance between the strip 2f and the strip 2f is adjusted.

The attachment state of the displacement suppression block 20 fixed to the both end parts of the two support frames 14 is collectively shown in FIG.
As shown in the plan view of FIG. 11, the four displacement suppressing blocks 20 disposed inside the four corner portions of the cabinet 1 direct the tip end of the support shaft member 21 to the inside of the cabinet 1 and the foot member 25 to the cabinet 1. It is placed towards the outside of the
More specifically, the front right-hand side displacement suppression block 20 of the cabinet 1 abuts the foot member 25 against the front right column 2a of the cabinet 1, and the front left-hand displacement restriction block 20 of the cabinet 1 is the foot member 25 as a cabinet It is arrange | positioned so that it may contact | abut to the support | pillar 2a of the front left side of 1. As shown in FIG. The displacement suppression blocks 20, 20 on the back side of the cabinet 1 are also arranged in the same direction.

Therefore, when the support frame 14 on the right side moves to the right in the plan view shown in FIG. 11, the foot members 25 of the two displacement suppression blocks 20 on the right side of the cabinet 1 hit the support 2a on the right side to suppress the movement. When the left support frame 14 tries to move to the left, the foot members 25 of the two displacement suppressing blocks 20 on the left side of the cabinet 1 hit the left column 2a to suppress its movement.
Further, when the left and right support frames 14 move to the front side of the cabinet 1, the side plates 20b of the two displacement suppression blocks 20 on the front side of the cabinet 1 hit the columns 2a on the front side to suppress their movement. Furthermore, when the left and right support frames 4 move to the rear side of the cabinet 1, the side plates 20b of the two displacement suppressing blocks 20 on the rear side of the cabinet 1 hit the columns 2a on the rear side of the cabinet 1 to suppress their movement.
Therefore, the foot member 25 or the side plate 20b of the displacement suppression block 20 abuts on any of the four columns 2a of the cabinet 1 even if the left and right support frames 14 move in any of the front, rear, left, and right directions. The deformation of the aseismatic frame 12 provided can be suppressed.

On the other hand, although the horizontal members 12 b and 12 c are assembled in a rectangular frame shape so as to surround the upper side wall of the transformer 5, the horizontal members 12 b and 12 c are bridged to the horizontal members 12 b located in front of and behind the transformer 5. A horizontal member 12d is provided to be adjacent to upper portions of the left and right side walls. In addition, a plurality of cone-shaped damping members 29 having the same shape as the foot member 25 described above are attached to the two horizontal members 12b before and after the transformer and the two horizontal members 12d at the left and right of the transformer. ing.
As shown in FIGS. 10 to 12, the vibration damping member 29 is a disc made of a support shaft member 29a, a cone-shaped head 29b formed at one end thereof, and an elastic body attached to the end face of the head 29b. And a damper member 29c.

In the transformer 5, two vibration damping members 29 are attached to the cross member 12b surrounding the upper end of the wider side wall so as to face the flat portion 5a of the opposite upper end of the side wall, and the width is small Also, two vibration damping members 29 are attached to the cross member 12c surrounding the upper end portion of the side wall so as to face the flat portion 5a of the upper end portion of the side wall opposed thereto.
The two vibration damping members 29 attached to the cross member 12b on the front side of the cabinet 1 are opposed to the left and right corner portions of the upper side wall of the front side of the transformer 5, and the horizontal bridge on the back side of the cabinet 1 The two vibration damping members 29 attached to the material 12 b are opposed to the left and right corner portions of the upper side wall of the transformer 5 on the back side.
The two vibration damping members 29 attached to the horizontal member 12 d on the right side of the cabinet 1 are opposed to the left and right corner portions of the upper side wall of the right side of the transformer 5, and the left side of the cabinet 1 The two vibration damping members attached to the cross member 12 d are opposed to the left and right corner portions of the upper side wall of the left side surface of the transformer 5.

A cylindrical support cylindrical member 30 having a screw hole is horizontally mounted at a position where the vibration reduction member 29 is to be mounted in the cross member 12d. The vibration damping member 29 is attached to the cross member 12 d by screwing the support shaft member 29 a into the screw hole of the support cylindrical member 30.
The damping members 29 opposed to the transformer 5 are each connected between the damper member 29c and the flat portion 5a without bringing the damper member 29c at the tip into contact with the flat portion 5a at the top of the transformer side wall. It is oppositely arranged with a gap of about 2 mm. This is because the flat portion 5a is also vibrated by the vibration generated by the transformer itself while the transformer 5 is in operation, and the damper member 29c and the flat portion 5a are not brought into contact by this vibration.

In the cabinet 1 having the above-described structure, since the transformer 5 is elastically supported by the anti-vibration base 3, the vibration-proof member 9 of the anti-vibration base 3 absorbs the vibration generated in the transformer 5. Vibration noise due to the transformer 5 is not transmitted.
In addition, since the distance between the lower mount 3A and the upper mount 3B can be limited by the action of the stopper bolt 8 and the restriction nut 10 provided at the corner portion of the vibration isolation mount 3, the transformer 5 is slightly shaken by earthquakes and the like. The upper limit of the inclination of the transformer 5 can be regulated within a certain angle. For this reason, it is possible to provide a structure with less inclination of the transformer 5 even when it receives a slight shake due to an earthquake.

  In the cabinet 1, the damper member 29c of the vibration reduction member 29 is disposed opposite to the flat portion 5a at the upper portion of the transformer with a gap. The transformer 5 minutely vibrates during operation due to vibration generated by an induction coil or the like housed inside. In this small vibration during operation, the flat portion 5a of the transformer 5 does not contact the damper member 29c, so that the vibration during operation of the transformer 5 is not transmitted to the seismic frame 12.

Next, in the cabinet 1 having the above-described configuration, when strong shaking acts due to a large earthquake or the like, the cabinet frame 2 may largely swing, and the aseismatic frame 12 may also swing greatly.
In this case, since the upper portion of the side wall of the transformer 5 largely swings, the flat portion 5a at the upper portion of the side wall collides with the damper member 29c. Here, since the damper member 29c exerts a damping effect, the side wall upper side of the transformer 5 is damped. As a result of this vibration reduction effect, it is possible to suppress the phenomenon that the upper part of the aseismatic frame 12 collides with the inside of the cabinet frame 2 violently.
For this reason, even if a large earthquake occurs, the earthquake resistant frame 12 does not give a large impact to the cabinet 1, so the front door 2C is not unintentionally opened, and the cabinet 1 generated by the collision of the seismic resistance frame 12 The cabinet 1 can be provided which is less likely to be damaged or deformed.

In addition, since the upper part of the transformer collides with the seismic frame 12 and shakes it when the transformer 5 swings greatly, even if the strength of the seismic frame 12 is set high enough, the upper part of the seismic frame 12 shakes. It will be done.
However, since the displacement suppression block 20 is provided between the aseismatic frame 12 and the cabinet frame 2 on the outside thereof, and the sway of the upper part of the aseismatic frame 12 can be suppressed by the displacement suppression block 20, deformation or damage of the cabinet 1 Can be suppressed, and disconnection of the wiring present on the upper side of the transformer 5 can be prevented, and damage to the portion around the wiring can also be prevented.

  The displacement suppression block 20 having the above-described configuration is formed in a block shape having at least three side plates 20 b around the substrate 20 a, and is interposed between the aseismatic frame 12 and the cabinet frame 2. Therefore, when one of the side plates 20b is fixed to the seismic frame 12 and the displacement suppression block 20 is inserted between the seismic frame 12 and the cabinet frame 2, the gap between the seismic frame 12 and the cabinet frame 2 is displaced. The suppression block 20 can be filled reliably.

In other words, displacement restraint blocks 20 are provided at the upper corner sides of the aseismatic frame 12 at both ends of the two support frames 14 attached to the aseismic frame 12, respectively. Can be filled with the displacement suppression block 20. For this reason, even if the upper part of the aseismatic frame 12 rolls in any direction of right and left or front and back due to large earthquakes, the aseismatic frame 12 can mitigate the impact colliding with the cabinet frame 2 and therefore deformation or damage of the cabinet 1 It is possible to prevent such a phenomenon that the front door 2C of the cabinet 1 is opened due to the earthquake.
Further, in the displacement suppression block 20, since the foot member 25 is provided at one end of the support shaft member 21 penetrating the substrate 20a, the displacement suppression block 20 is inserted in the gap between the upper part of the aseismatic frame 12 and the cabinet frame 2. In this state, the position of the foot member 25 can be adjusted to securely press the foot member 25 against the inner surface of the cabinet frame 2.

  In this case, since the gap between the aseismatic frame 12 and the cabinet frame 2 is closed with the foot member 25 in addition to any of the side plates 20b of the displacement suppression block 20, the upper side of the aseismatic frame 12 is horizontal in any direction in the cabinet frame 2. Even if it shakes, the side plate 20b of the displacement suppression block 20 or the foot member 25 can suppress the lateral vibration of the seismic frame 12, and the phenomenon that the upper portion of the seismic frame 12 collides with the cabinet frame 2 can be prevented.

  If it is cabinet 1 of the above-mentioned composition, strong cabinet frame 2 can be built by four columns 2a and top frame material 2b made of L type steel materials, and four column members 12a made of L type steel materials And the upper frame member 12d make it possible to construct a strong seismic frame 12. Even with a strong cabinet frame 2 and earthquake-proof frame 12 constructed of L-shaped steel, there is a risk that both frames will partially collide with each other due to a large earthquake etc., in which case the displacement suppression block 20 is effective Since the collision of both frames is mitigated, it contributes to the deformation prevention and damage prevention of the cabinet 1.

In the cabinet 1 having the above-mentioned configuration, the displacement suppression blocks 20 are attached to four places at the corner portions of the upper portion of the aseismatic frame, the side plates 20b of the displacement suppression block 20 are in contact with the inner surface of the cabinet frame 2, and the foot members 25 are cabinet It is preferable to press against the inner surface of the frame 2.
In order to bring the side plate 20 of the displacement suppression block 20 into contact with the inner surface of the cabinet frame 2, the thickness can be adjusted by adjusting the thickness of the adjustment liner 28 when the displacement suppression block 20 is bolted to the upper end of the column member 12 a. Further, the position of the foot member 25 can be adjusted by adjusting the screwing position of the support shaft member 21 in the displacement suppressing block 20.

Here, as shown in FIG. 11, the foot members 25 of the two displacement suppression blocks 20 on the right side of the cabinet 1 face to the right and the foot members 25 of the two displacement suppression blocks 20 on the left side of the cabinet 1 face the left By arranging them, the position adjustment of each foot member 25 becomes easy.
In order to adjust the position of the foot member 25, it is necessary to adjust the position of the support shaft member 21 of each displacement suppressing block 20. In the arrangement of FIG. 11, the support shaft member 21 for positioning the support shaft member 21. The end position of and the adjustment nut 26 can be arranged towards the center side of the cabinet 1. For this reason, the operator can use the empty space on the center side of the cabinet 1 to adjust the position of the support shaft member 21 and tighten the adjustment nut 26 in a comfortable work posture.
On the other hand, when the orientation of the support shaft member 21 and the position of the adjustment nut 26 are from the side wall of the cabinet 1 or the back side, it becomes difficult to secure a space for tightening the nut or the work posture is poor. As a result, the mounting adjustment operation of the displacement suppression block 20 is not easy.

The structure of the first embodiment is a structure that can be applied to the existing transformer 5 that includes only the cabinet 1 and the seismic frame 12 and does not include the displacement suppression block 20 and the vibration damping member 29. Therefore, by adopting the structure of the first embodiment with respect to the existing transformer 5 which is not provided with the displacement suppression block 20 and the vibration damping member 29, the existing transformer 5 which is considered to be insufficient as a seismic structure On the other hand, it will be possible to carry out remodeling work to obtain the earthquake reducing effect.
In Japan, a considerable number of transformers 5 equipped with only the cabinet 1 and the aseismatic frame 12 are in operation, but by adopting the structure of the first embodiment, the displacement suppression block 20 can be used while effectively utilizing the existing equipment. It is possible to take measures against earthquake earthquakes only by performing construction to add the vibration damping member 29. In that case, when the transformer 5 is an oil-filled transformer, it is difficult to determine the installation position of the vibration damping member 29 due to the vertical fins 5D provided on the side walls becoming obstructed, as in the first embodiment If the vibration reduction member 29 is disposed to face the flat portion 5a, the vibration reduction structure can be easily applied to the existing transformer 5.

"2nd Embodiment"
FIGS. 13 to 18 show an internal configuration of a cabinet for accommodating a transformer, to which the vibration damping device for electric power equipment of the second embodiment according to the present invention is applied. In this second embodiment, a rectangle is provided inside the cabinet frame. The structure provided with the three-dimensional frame-shaped earthquake-resistant frame 12 is equivalent to the structure of the first embodiment described above.
In the second embodiment, a molded transformer (power device) 50 is installed inside the aseismatic frame 12. In the case of this embodiment, the molded transformer 50 is provided with three coil bodies 51 for three-phase alternating current, and a magnetic core (not shown) is provided so as to penetrate through the centers of the coil bodies 51. Although not shown, a terminal portion on the winding start side of the coil is provided on the front side of each coil body 51.

Further, as shown in FIGS. 13 and 14, a cover 52 is provided so as to cover the tops of the three coil bodies 51, and supports the bottoms of the three coil bodies 51 as shown in FIGS. A base 53 is provided. The base 53 is supported by the anti-vibration mount 3 described above in the first embodiment, and the whole of the molded transformer 50 is supported.
The cover 52 has a ceiling wall 52a, a side wall 52b on the front side, a side wall 52c on the back side, an end wall 52d on the right side, and an end wall 52e on the left side.
The cover 52 is made of metal fixed to the upper side of the three coil bodies 51 by metal fittings or the like via an insulating material (not shown), and is reduced around the cover 52 in the structure of the second embodiment. A plurality of vibration members 29 are disposed.

The horizontal members 12b and 12c of the seismic frame 12 are provided so as to surround the periphery of the cover 52, and the horizontal members 12d are provided on the inside of the horizontal members 12c, and the supports attached to the horizontal members 12b and 12d The vibration reduction member 29 is provided so as to be screwed into the screw portion of the cylindrical member 30.
As an example, the vibration damping member 29 is disposed to face both end portions of the wide side wall 52b of the cover 52, and the damping member 29 is disposed to face both end portions of the small width side wall 52d. . Therefore, a total of eight vibration damping members 29 are provided at four corner portions of the cover body 52, two each. The damper member 29c on the tip end side of each vibration damping member 29 is disposed to face the side walls 52b and 52c or the side walls 52d and 52e with a gap of about 1 to 2 mm.
The reason for providing these gaps is to prevent the vibration during operation of the molded transformer 50 from being transmitted to the vibration damping member 29 as described in the first embodiment above, When shaking occurs, the cover 52 collides with the vibration damping member 29.
An electrode terminal 56 is provided upright on the back central upper side of the three coil bodies 51, and electrode terminals are attached to the front central upper side of the coil body 51, although not shown in the drawings. A cable or the like is connected, but a power cable or the like is not shown.

  Also in the structure of the second embodiment, since the vibration damping member 29 is disposed opposite to the side walls 52b, 52c, 52d and 52e of the upper part of the mold type transformer 50, the mold is caused by the earthquake etc. When the upper part of the type transformer 50 rolls largely, the side walls 52b, 52c, 52d, 52e collide with the vibration reduction member 29 via the damper member 29c. Here, since the damper member 29c exerts a damping effect, the upper side of the transformer 5 is damped. As a result of this vibration reduction effect, it is possible to suppress the phenomenon that the upper part of the aseismatic frame 12 collides with the inside of the cabinet frame 2 violently.

Further, similarly to the structure of the first embodiment, since the space between the aseismatic frame 12 and the cabinet frame 2 is closed by the foot member 25 in addition to any of the side plates 20b of the displacement suppressing block 20 The side plate 20b of the displacement suppression block 20 or the foot member 25 suppresses the lateral vibration of the seismic frame 12 regardless of the direction in which the upper side of the seismic frame 12 rolls in the cabinet frame 2 due to the collision with the seismic member 29. The phenomenon that the upper part of the aseismatic frame 12 collides with the cabinet frame 2 violently can be prevented.
Therefore, even if the molded transformer 50 is housed inside the cabinet 1 and a large earthquake rolling acts, damage to the cabinet frame 1 can be prevented.
With regard to the other effects, the same effects as those in the case of the structure of the first embodiment described above can be obtained.

In the structure of the second embodiment, an electrode terminal 56 to which a high voltage is applied is provided on the front side or the back side of the coil body 51 of the molded transformer 50. Due to the presence of these electrode terminals 56, providing side walls on the front and back sides of the molded transformer 50 and arranging the vibration damping member 29 on this side may result in electrical leakage, electric shock, etc. It becomes. For this reason, it is desirable to provide the cover body 52 on the upper part of the mold type transformer 50, and to arrange the vibration damping member 29 so as to face the side walls 52b, 52c, 52d, 52e of the cover body 52. The vibration damping member 29 is disposed on both end sides of the side wall 52 c so as to have a sufficient distance from the electrode terminal 56 provided on the back side of the coil body 51.
Further, as described above, the lateral movement of the molded transformer 50 is suppressed by the vibration reduction member 29 and the seismic frame 12, and the lateral movement of the seismic frame 12 is suppressed by the displacement suppression block 20. Therefore, even if the molded transformer 50 swings due to an earthquake or the like, the interference between the electrode terminal 56 and the vibration damping member 29 can be avoided, and the short circuit prevention function is exhibited.

  If it is the structure of 2nd Embodiment, it can apply to the existing molded type transformer 50 accommodated in the cabinet 1 similarly to the structure of previous 1st Embodiment. It is possible to attach the cover 52 to the existing molded type transformer 50 without the cover 52, and it is also possible to attach the support frame 14 and the displacement suppression block 20 to the seismic frame 12, A member 29 can also be provided. For this reason, it can be set as a seismic damping structure by additional construction with respect to the mold type transformer 50 already in operation.

  By the way, in the structure of the first embodiment and the second embodiment, although the vibration damping member 29 adopts the structure in which the damper member 29c is provided at the tip of the cone-shaped head 29a, the vibration damping member 29 uses a coil spring. The shock absorbing structure may be used, or a general shock interferenceable device such as a shock absorber or a spring plunger may be adopted.

"Test example"
A cabinet having a cabinet frame with a height of 2350 mm, a width of 1600 mm and a depth of 1000 mm shown in FIGS. 1 and 2 assembled in a rectangular three-dimensional shape by welding from an L-shaped steel plate having a width of 50 mm on one side was prepared. The cabinet frame is fitted with steel plate side walls, a ceiling wall and a double-sided front wall. The front door is provided with a lockable lever handle type opening / closing mechanism and a key.
This cabinet frame is bolted on the iron base of the vibration exciter, and an antivibration frame (width: 1060 mm, depth: 650 mm, height: 209 mm) is made in its inside. K11029) was installed, and a transformer with a width of 980 mm, a height of 1151 mm, a depth of 595 mm, and a weight of 1200 kg was installed by bolting on this vibration-proof mount.

A seismic frame with a width of 1200 mm, a depth of 800 mm, and a height (1000) mm of the configuration shown in FIG. 2 consisting of a support member consisting of an L-shaped steel plate with a width of 60 mm, a cross member and an inclined brace member around an oil filled transformer. Each part was bolted and placed inside the cabinet so as to surround a finned oil-filled transformer. The bottom of the seismic frame was bolted to a concrete base.
Since the flat portion is provided on the upper side wall of the transformer, the displacement suppressing block is provided on the horizontal member of the seismic frame so as to face the flat portion.
Using a displacement suppression block in which a side plate of 1650 mm in height is erected on three sides of a substrate consisting of a steel plate of 5 mm in thickness, 96 mm in length and 50 mm in width, one end of a support shaft member of 63 mm in length penetrating a screw hole of the substrate Provided with a disc-like foot member having a diameter of 40 mm. A 6 mm thick rubber damper plate was attached to the surface of the foot member.
Four displacement suppression blocks were used, and gaps were filled between both end portions of a steel support frame attached to the top end sides of the aseismatic frame and the cabinet frame around the support frame, to constitute the cabinet of the embodiment. Further, in the horizontal members surrounding the upper portion of the transformer, a total of eight damper members are disposed as shown in FIG. 11 two on each side of the transformer so as to face the flat portion of the upper portion of the transformer.

The cabinet of this example was placed on a vibrating table, and an excitation test was performed in which a vibration corresponding to an earthquake of seismic intensity 7 was applied for 140 seconds.
As a result, the locked state of the cabinet front door was maintained, and no damage or deformation was observed in each part of the cabinet.

"Comparative example"
The cabinet and earthquake-resistant frame equivalent to the example were constituted except that the displacement suppression block was not provided in the above-mentioned cabinet, and the excitation test which added the vibration equivalent to seismic intensity 7 for 140 seconds under the same conditions as the above-mentioned test was done. .
The result is shown in FIG. 19, but although the lever handle lock of the cabinet front door was locked, the key was released and opened, and a raised and deformed portion was produced at the bottom of the left side wall of the cabinet. In addition, in FIG. 19, the description of the transformer accommodated in the inside of a cabinet is abbreviate | omitted, and only the outline form of the cabinet is shown.
From the above comparison, it is possible to confirm the earthquake resistance improvement effect of the structure in which the displacement suppression block is provided in the cabinet in which the earthquake resistant frame is provided inside and the gap between the earthquake resistant frame and the cabinet frame is filled. In addition, when a displacement suppression block is not provided, if a large earthquake occurs, the key is removed by the deformation of the hook portion despite the locking with the lever handle type hook lock, and the front door is opened. It has also been found that shocks can be applied to the cabinet frame from transformers and seismic frames.

  Reference Signs List 1 cabinet 2 cabinet frame 2A peripheral wall 2a post 2b upper frame material 2d lower frame material 2B ceiling wall 2C front door 3 vibration isolation frame 3A lower frame 3B: Upper frame, 5: Oil-impregnated transformer (electric power equipment), 5a: Flat portion, 6: Corner member, 7: Frame frame, 8: Stopper bolt, 12: Earthquake resistant frame, 12a: Strut member, 12b, 12c, 12d: Horizontal mounting member, 20: Displacement suppression block, 20a: Substrate, 20b: Side plate, 20c: Screw hole, 21: Support shaft member, 25: Foot member, 26, 27: Adjustment nut, 28: Liner for thickness adjustment , 29: vibration reduction member, 50: molded transformer (electric power apparatus), 52: cover body, 52a: ceiling wall, 52b, 52c, 52d, 52e: side wall.

Claims (6)

A cabinet is formed by providing a peripheral frame, a ceiling wall, and a front door in a rectangular three-dimensional cabinet frame, a seismic frame assembled in a rectangular three-dimensional frame is installed inside the cabinet, and a bottom part is installed inside the seismic frame While the power equipment supported by the anti-vibration mount is installed,
A displacement restraining block is interposed between a lateral mounting member of the aseismatic frame and the cabinet frame adjacent to the lateral mounting member;
A vibration control device for a power equipment, wherein a vibration reduction member is disposed between the power equipment side wall upper portion and the aseismatic frame, with a gap in the upper portion of the power equipment side wall with a gap therebetween.   The displacement suppression block penetrates the substrate in the thickness direction, the substrate interposed between the aseismatic frame and the cabinet frame, the side plates erected from at least three sides of the substrate, and the substrate. A bolt-type support shaft member slidably provided in the thickness direction of the substrate, and a plurality of adjustment nuts screwed with the support shaft member to adjust the insertion position of the support shaft member with respect to the substrate; The damping device for electric power equipment according to claim 1, further comprising: a foot member attached to one end side of the support shaft member and pressed against a side portion of the cabinet frame facing the substrate.   The displacement suppressing block is attached to the upper corner side of the aseismatic frame, and each displacement suppressing block presses each foot member against the cabinet frame adjacent thereto, and the adjustment nut on the other end side of each support shaft member The vibration-damping device for electric power equipment according to claim 2, wherein the housing is arranged to face the inside of the cabinet.   The transformer has a side wall and a ceiling wall, and a plurality of cooling fins are protrusively provided on a portion excluding the side wall upper end portion, and a flat portion is formed on the side wall upper end portion above the upper end of the cooling fin The vibration-damping member is attached to the cross-bridge such that the cross-bridge of the anti-seismic frame is formed at the same height as the flat portion and the flat portion faces the flat portion. The vibration control apparatus for electric power equipment as described in any one of-. The cabinet frame comprises four columns made of steel, an upper frame member connecting the upper ends of the four columns, and a lower frame member connecting the lower ends of the four columns in a rectangular three-dimensional frame shape Rare
The seismic frame is assembled in a rectangular three-dimensional frame shape by including four support members made of steel and a horizontal member connecting the upper ends of the four support members.
The column member of the said earthquake-resistant frame is arrange | positioned in the close position inside the support | pillar of the said cabinet frame, The said displacement suppression block was attached to the said horizontal construction material. The vibration control device for electric power equipment according to one item.   The said displacement suppression block was attached to the said horizontal member via the thickness adjustment liner, The vibration-reduction apparatus for electric power equipment as described in any one of Claims 1-5 characterized by the above-mentioned.

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