JP2005093534A - Transformer with ventilation fan - Google Patents

Transformer with ventilation fan Download PDF

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Publication number
JP2005093534A
JP2005093534A JP2003321757A JP2003321757A JP2005093534A JP 2005093534 A JP2005093534 A JP 2005093534A JP 2003321757 A JP2003321757 A JP 2003321757A JP 2003321757 A JP2003321757 A JP 2003321757A JP 2005093534 A JP2005093534 A JP 2005093534A
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JP
Japan
Prior art keywords
transformer
fastening
ventilation fan
fastener
flanges
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Pending
Application number
JP2003321757A
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Japanese (ja)
Inventor
Koji Matsunaga
Hisashi Yoshiya
久之 吉矢
耕治 松永
Original Assignee
Daihen Corp
株式会社ダイヘン
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Publication date
Application filed by Daihen Corp, 株式会社ダイヘン filed Critical Daihen Corp
Priority to JP2003321757A priority Critical patent/JP2005093534A/en
Publication of JP2005093534A publication Critical patent/JP2005093534A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To obtain a transformer with a ventilation fan capable of removing a ventilation fan without separating components of a fastener for fastening both flanges.
A ventilation fan is attached to the upper part of the transformer box. The ventilation fan is attached to the upper part of the transformer box by providing a box-side flange 9 at the upper part of the transformer box, and the ventilation fan arranged on the box-side flange 9 is provided with a fan-side flange 10 at the lower part. 9 and 10 are overlapped and fastened with the fastener 11 at a plurality of fastening positions. The fastener 11 is integrated by combining its components even when the flanges 9 and 10 are not fastened. The integrated fastener 11 is supported by a transformer box so as to be movable between a fastening position and a non-fastening position by a connector 12.
[Selection] Figure 4

Description

  The present invention relates to a transformer with a ventilation fan in which a ventilation fan is attached to the top of a transformer box.

A conventional transformer with a ventilation fan of this type has a structure in which a ventilation fan is attached to the top of the transformer box. Ventilation fans need to be replaced in the event of a failure due to maintenance or service life. For this reason, the ventilation fan placed on the top of the transformer box is installed with a box-side flange on the top of the transformer box, and the ventilation fan placed on the box-side flange has a fan-side flange on the bottom. This is done by overlapping the flanges, passing the bolts through the bolt through holes in the flanges, and fastening the nuts screwed to these bolts (for example, see Patent Document 1).
JP-A-9-182222

  However, in such a transformer with a ventilation fan, when removing the ventilation fan, the nuts screwed to the respective bolts were removed and the ventilation fan was removed. There was a problem that the nut was easily dropped and the bolts and nuts were easily lost.

  In addition, when removing the ventilation fan, there is a problem that a power failure has to be made in order to ensure the safety of the operation, particularly in a high voltage transformer.

  The objective of this invention is providing the transformer with a ventilation fan which can remove a ventilation fan, without isolate | separating the component of the fastener which fastens both flanges.

  Another object of the present invention is to provide a transformer with a ventilation fan that can attach and detach a ventilation fan without causing a power failure.

  In the present invention, a ventilation fan is attached to the upper part of the transformer box, and the ventilation fan is attached to the upper part of the transformer box by providing a box-side flange at the upper part of the transformer box. The ventilation fan to be arranged in the above object is a transformer with a ventilation fan in which a fan side flange is provided at the lower part and the both flanges are overlapped and fastened with fasteners at a plurality of locations.

In the transformer with a ventilation fan according to the present invention, the fasteners are combined and integrated even when the flanges are not fastened, and the integrated fastener is the transformer. The box is supported by a connector so as to be movable between a fastening position and a non-fastening position.
In this case, the fastener includes a bolt insertion groove whose proximal end is supported by the transformer box so as to be movable between a fastening position and a non-fastening position by a connector, and is open to the outer periphery of the flanges at the fastening position. It is preferable that the bolt is inserted into the bolt and a nut that is screwed to the bolt and fastens the flanges at the fastening position.

  The fastener includes a C-shaped bracket whose base end is supported by the transformer box so as to be movable between a fastening position and a non-fastened position by a connector, and fits the flanges at the fastening position; It is preferable that the bolt is integrated with at least one end, and includes a bolt for fastening the flanges at the fastening position.

  Furthermore, it is preferable that each said fastener is provided in the position away from the position of the high voltage terminal provided in the said transformer box.

  In the transformer with a ventilation fan according to the present invention, the fasteners that fasten both flanges are combined and integrated even when both flanges are not fastened. Since the transformer box is supported by the coupling tool so as to be movable between the fastening position and the non-fastening position, the ventilation fan can be attached and detached without separating the components of the fastener. For this reason, it is possible to attach and remove the ventilation fan while preventing the components of the fastener from falling or being lost.

  In this case, the fastener is inserted into the bolt insertion groove whose base end is supported by the transformer box so as to be movable between the fastening position and the non-fastening position, and is open to the outer periphery of both flanges at the fastening position. And a nut that is screwed to the bolt and fastened to both flanges at the fastening position, and is integrated with the transformer box to move between the fastening position and the non-fastening position by a connector. The components of the fasteners are separated by turning the bolts supported so that they can be inserted into the bolt insertion grooves that open to the outer periphery of both flanges at the fastening position, and the nuts screwed into the bolts are tightened. Without the ventilation fan can be mounted on top of the transformer box. Further, the ventilation fan can be removed from the upper part of the transformer box without separating the components of the fastener.

  Further, the fastener has a C-shaped bracket whose base end is supported by the transformer box so as to be movable between a fastening position and a non-fastened position and is fitted to both flanges at the fastening position, and at least one end of the C-shaped bracket. When it is integrated with a bolt that is screwed together and fastens both flanges at the fastening position, it is supported by the transformer box so as to be movable between the fastening position and the non-fastening position by a connector. Turn the C-shaped bracket and fit it to both flanges at the fastening position, and turn the bolt that is screwed into at least one end of the C-shaped bracket, so that the ventilation fan can be connected to the upper part of the transformer box without separating the fastener components. Can be attached to. Further, the ventilation fan can be removed from the upper part of the transformer box without separating the components of the fastener.

  Furthermore, if each fastener is provided at a position away from the position of the high-voltage terminal provided on the transformer box, the ventilation fan can be attached and detached without causing a power failure.

1 to 4 show a first example of the best mode for carrying out a transformer with a ventilation fan according to the present invention. FIG. 1 is a plan view of the transformer with a ventilation fan of this example, and FIG. 3 is a front view of the transformer with the ventilation fan of the example, FIG. 3 is a side view of the transformer with the ventilation fan of the present example, and FIG. 4 shows the attachment state of the fastener used in the present example. The partial cross-sectional top view by the side of a connection part, (B) is a vertical side view, (C) is a front view.
The transformer with a ventilation fan of this example includes a rectangular parallelepiped transformer box 1, and a three-phase transformer main body is accommodated in this example, although not illustrated. At a position near the long side of the upper surface of the transformer box 1, a lead-out portion 2 of the low-voltage circuit of the transformer body is provided so as to protrude to the outside. Further, a three-phase high-voltage terminal 3 of the transformer body is provided on the wide side wall of the transformer box 1 so as to protrude to the outside.

  Ventilation fans 4 are attached to the upper part of the transformer box 1 so as to correspond to a three-phase transformer body (not shown). Each ventilation fan 4 has a structure in which a fan main body 6 positioned and rotated in a cylindrical fan case 5 is accommodated.

  The ventilation fan 4 is attached to the upper part of the transformer box 1 in such a manner that a rising cylinder part 8 is provided around each hole 7 in the upper part of the transformer box 1 and a box side flange 9 is provided on the outer periphery of the upper end of the cylinder part 8. The ventilation fan 4 disposed on the box-side flange 9 is provided with a fan-side flange 10 on the outer periphery of the lower portion of the fan case 5, and the flanges 9 and 10 are overlapped at a plurality of locations (three locations in this example). It is fastened with the fastener 11 at the fastening position. Even when the flanges 9 and 10 are not fastened, the fastener 11 is combined and integrated, and the integrated fastener 11 is fastened to the transformer box 1 by the connector 12. And a non-fastening position. The fastener 11 of this example is supported at the base end of the transformer box 1 by a connector 12 so as to be rotatable between a fastening position and a non-fastening position, and is open to the outer periphery of both flanges 9 and 10 at the fastening position. The bolt 14 is inserted into the bolt insertion groove 13 and a nut 15 that is screwed into the bolt 14 and fastens the flanges 9 and 10 at the fastening position.

  The connector 12 includes a pair of brackets 16 erected in the horizontal direction in the rising cylindrical portion 8 corresponding to the bolt insertion grooves 13, and bolts as support shafts passed through the brackets 16. 17 and a nut 18 that is screwed so that the bolt 17 cannot be removed, and an annular portion 14a at the base of the bolt 14 is rotatably fitted to a portion of the bolt 17 between the pair of brackets 16 and fastened. The structure is movable between a position and a non-fastened position.

  Each such fastener 11 is provided at a position away from the position of the high-voltage terminal 3 provided in the transformer box 1.

  Reference numeral 23 denotes an air inlet provided in the lower part of the transformer box 1.

 In this way, the nut 11 is screwed onto the bolt 17 even when the fastener 11 that fastens the ventilation fan 4 to the upper portion of the transformer box 1 at the butted portion of the flanges 9 and 10 is not fastened. The components are combined and integrated by being combined, and the integrated fastener 11 is supported by the transformer box 1 so as to be movable between the fastening position and the non-fastening position by the connector 12. Therefore, the ventilation fan 4 can be attached and detached without separating the components of the fastener 11. For this reason, the ventilation fan 4 can be attached and detached while preventing the component parts of the fastener 11 from falling or lost.

  In this case, the fastener 11 is supported by the transformer box 1 so as to be movable between the fastening position and the non-fastening position by the coupling box 12, and is open to the outer periphery of the flanges 9 and 10 at the fastening position. When the bolt 14 inserted into the bolt insertion groove 13 and the nut 15 that is screwed into the bolt 14 and fastens the flanges 9 and 10 at the fastening position are configured and integrated, 1, the bolt 14 supported so as to be movable between the fastening position and the non-fastening position by the connector 12 is turned and inserted into the bolt insertion groove 13 opened to the outer periphery of the flanges 9 and 10 at the fastening position, By tightening the nut 15 screwed into the bolt 14, the ventilation fan 4 can be attached to the upper portion of the transformer box 1 without separating the components of the fastener 11. Further, the ventilation fan 4 can be removed from the upper portion of the transformer box 1 without separating the components of the fastener 11.

  Furthermore, if each fastener 11 is provided at a position away from the position of the high-voltage terminal 3 provided on the transformer box 1, it is difficult to get an electric shock, so the ventilation fan 4 is attached and removed without causing a power failure. be able to.

  FIG. 5 is a perspective view of the fastener 11 used in the second example of the best mode for carrying out the transformer with a ventilation fan according to the present invention. Note that portions corresponding to those in FIGS. 1 to 4 described above are denoted by the same reference numerals.

  The fastener 11 used to fasten both flanges 9 and 10 in this example is supported at the proximal end by the transformer box 1 so as to be movable between the fastening position and the non-fastening position by the connector 12. The C-shaped bracket 19 that fits into the flanges 9 and 10 and the bolt 20 that is screwed to at least one end of the C-shaped bracket 19 in this example, both ends, and fastens the flanges 9 and 10 are configured. It is integrated. A gripping plate 21 that grips both flanges 9 and 10 is supported at the tip of each bolt 20. A knob 22 for turning these bolts 20 is attached to the base end of each bolt 20.

  Even in such a fastener 11, the C-shaped bracket 19 is fitted to the flanges 9 and 10 at the fastening position, the knob 22 is turned, the bolt 20 is turned, and the flanges 9 and 10 are fastened by the gripping plate 21 at the tip. Thus, the ventilation fan 4 can be attached to the upper part of the transformer box 1 without separating the components of the fastener 11. Further, the ventilation fan 4 can be removed from the upper portion of the transformer box 1 without separating the components of the fastener 11.

  Also in this example, each fastener 11 is provided at a position away from the position of the high-voltage terminal 3 provided in the transformer box 1 as in FIG.

It is the top view which showed the 1st example of the best form which implements the transformer with a ventilation fan which concerns on this invention. It is a front view of the transformer with a ventilation fan of the 1st example. It is a side view of the transformer with a ventilation fan of the 1st example. The attachment state of the fastener used in the 1st example is shown, (A) is a partial cross section top view by the side of a connection part, (B) is a vertical side view, and (C) is a front view. It is a perspective view of the fastener used in the 2nd example of the best form which carries out the transformer with a ventilation fan concerning the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transformer box 2 Low voltage circuit lead-out part 3 High voltage terminal 4 Ventilation fan 5 Fan case 6 Fan main body 7 Hole 8 Tube part 9 Box side flange 10 Fan side flange 11 Fastening tool 12 Connection tool 13 Bolt insertion groove 14 Bolt 14a Annular part 15 Nut 16 Bracket 17 Bolt as a support shaft 18 Nut 19 C-shaped bracket 20 Bolt 21 Grip plate 22 Knob 23 Inlet

Claims (4)

  1. A ventilation fan is attached to the upper part of the transformer box, and the ventilation fan is attached to the upper part of the transformer box. In the transformer with a ventilation fan, the fan side flange is provided in the lower part, the both flanges are overlapped and fastened with fasteners at a plurality of places,
    The fasteners are combined and integrated even when the flanges are not fastened, and the integrated fastener is connected to the transformer box at a fastening position and a non-fastening position. A transformer with a ventilation fan, characterized by being movably supported.
  2.   The fastener is inserted into a bolt insertion groove whose base end is supported by the transformer box so as to be movable between a fastening position and a non-fastening position and is open to the outer periphery of the flanges at the fastening position. The transformer with a ventilation fan according to claim 1, wherein the transformer includes a bolt and a nut that is screwed to the bolt and fastens the two flanges at a fastening position.
  3.   The fastener includes a C-shaped bracket whose base end is supported by the transformer box so as to be movable between a fastening position and a non-fastened position by a connector, and is fitted to the flanges at the fastening position, and at least of the C-shaped bracket. The transformer with a ventilation fan according to claim 1, wherein the transformer is integrated with a bolt that is screwed to one end and fastens the flanges at a fastening position.
  4. The said each fastener is provided in the position away from the position of the high voltage terminal provided in the said transformer box, The transformer with the ventilation fan of any one of Claims 1-3 characterized by the above-mentioned. vessel.
JP2003321757A 2003-09-12 2003-09-12 Transformer with ventilation fan Pending JP2005093534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003321757A JP2005093534A (en) 2003-09-12 2003-09-12 Transformer with ventilation fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003321757A JP2005093534A (en) 2003-09-12 2003-09-12 Transformer with ventilation fan

Publications (1)

Publication Number Publication Date
JP2005093534A true JP2005093534A (en) 2005-04-07

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JP2003321757A Pending JP2005093534A (en) 2003-09-12 2003-09-12 Transformer with ventilation fan

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106449025A (en) * 2016-12-12 2017-02-22 沈小红 Dry-type transformer protecting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106449025A (en) * 2016-12-12 2017-02-22 沈小红 Dry-type transformer protecting device

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