JP2008053492A - Stationary induction electric apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stationary induction electric apparatus that facilitates connection of soundproof panels even when a distortion occurs at the final connection, connecting the soundproof panels with each other, due to superimposition of a distortion or a dimensional error of each connection so as to achieve sound leakage prevention while eliminating long-time adjustment work. <P>SOLUTION: The stationary induction electric apparatus is provided with a stationary induction electric apparatus body, and a soundproof tank 2 composed of a plurality of the soundproof panels 21, 22 that are provided so as to surround the stationary induction electric apparatus body while being connected with each other. A prescribed gap 5 is provided between the soundproof panels adjacent to each other at least at one place in each connection part between the soundproof panels. One soundproof panel 22A and the other soundproof panel 22B adjacent to each other via the gap are connected with each other by a flexible adjustment member 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a static induction electric appliance in which a static induction electric appliance body such as a transformer is covered with a soundproof tank composed of a plurality of soundproof panels connected to each other.

  As a conventional soundproof static induction machine, for example, in a tank having a narrow bottom part that accommodates the lower yoke part of the main body of the static induction machine, and a wide coil accommodation part that has a step portion from the bottom part. In the static induction device that houses the static induction main body, at least a lateral upper reinforcing member and a lower reinforcing member are provided on the entire circumference outside the tank, and the lower reinforcing member and the bottom of the tank are connected to a sound insulating plate. In addition, a sound insulating plate is also provided and fixed between the upper reinforcing member and the lower reinforcing member of the tank, and the side surface of the tank is covered with the sound insulating plate (for example, see Patent Document 1).

Japanese Laid-Open Patent Publication No. 8-124864 (first page, FIG. 1)

  In a soundproof tank used for a soundproof type static induction machine, a combination test with a main body of a static induction machine such as a transformer is carried out before shipment, then disassembled, transported, and reassembled on site. In this case, the soundproof tank is composed of a plurality of soundproof panels divided into sizes that can be easily disassembled, transported and assembled, and each panel has a bolted connection structure that is easy to disassemble and assemble. In the case of the conventional technique such as Patent Document 1, since the connection structure does not use a bolt, there is a problem that it is not suitable when disassembled after such a test and reassembled on site. On the other hand, in the structure in which the soundproof panels divided into multiple parts are connected by bolting, especially in the case of large transformers, the number of connection points increases, and distortion and dimensional errors of each connection part are superimposed to process the final connection part. Dimensional error increases. For this reason, at the end of tightening, it is necessary to adjust the dimensions by loosening the tightened part or to remove distortion by hitting with a hammer, and there is a problem of requiring a great amount of processing time.

  The present invention has been made to solve the above-described problems of the prior art, and can be easily connected even when distortion occurs in the connection portion between the soundproof panels due to superposition of distortion and dimensional error. The purpose of the present invention is to obtain a stationary induction device that can prevent sound leakage and does not require long-term adjustment work.

  A static induction electrical appliance according to the present invention is a static induction electrical appliance comprising a static induction electrical appliance main body and a soundproof tank comprising a plurality of soundproof panels connected to each other so as to surround the static induction electrical appliance main body. A predetermined gap is provided between adjacent soundproof panels in at least one of the connecting portions of the soundproof panel, and one soundproof panel and the other soundproof panel adjacent to each other through the gap are flexible. It connects with the adjustment member which has this.

  According to the present invention, a predetermined gap is provided in at least one portion of the connecting portion of the soundproof panel, and one soundproof panel and the other soundproof panel that are adjacent to each other through the gap are provided by the flexible adjustment member. Since it is connected, it can be easily connected even if there is distortion. In addition, the strain relief operation can be eliminated. Furthermore, since the adjusting member has flexibility, the adhesion to the soundproof panel is good, sound leakage is prevented, and the effect of reducing noise is obtained.

Embodiment 1 FIG.
1 and 2 are diagrams for explaining a main part of a stationary induction device according to Embodiment 1 for carrying out the present invention, and FIG. 1 is a perspective view conceptually showing a soundproof tank portion of the stationary induction device, 2A is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 2B is a cross-sectional view showing a modification of FIG. 2A. In the figure, the stationary induction device 1 includes a stationary induction device body (not shown) and a soundproof tank 2 provided to surround the stationary induction device body. In addition, although the stationary induction machine main body is equipped with accessory devices such as a bushing, these are completely the same as known conventional devices, and therefore, illustration is omitted for convenience.

  The soundproof tank 2 is divided into appropriate sizes that are easy to disassemble, transport, and assemble. In this example, a plurality of soundproof panels 21 (21A, 21B, 21C,...) On the lower side, and the upper side The sound insulation panels 22 (22A, 22B, 22C, 22D) are connected to each other, and the connection part 3 between the sound insulation panels 21, 22 has an inner flange-like connection part 3 bent in an L-shaped cross section. The adjacent connection parts 3 are fixed to each other by fastening means 4 such as bolts (detailed illustration is omitted). Among the connecting portions A, for example, a joint portion between the soundproof panels that is expected to be superposed of distortion and dimensional error, for example, the soundproof panels 22A and 22B, the soundproof panels 22B and 22C, and the soundproof panels 22C and 22D in this example. Each connecting portion A1 is provided with a predetermined gap 5 as representatively shown in FIG. 2 (a), and one soundproof panel 22A and the other soundproof panel 22B adjacent to each other through the gap 5, The adjustment members 6 having flexibility are connected to each other.

  As the adjustment member 6 having flexibility, for example, a known damping material such as a sound absorbing plate or a damping steel plate made of a composite material in which a sound absorbing material is sandwiched between two steel plates in addition to a plate material such as a steel plate. Materials and the like can be preferably used without any particular limitation. The adjusting member 6 has a curved surface portion 6a for imparting flexibility composed of one or a plurality of curved surfaces in a central portion of a cross section in a direction perpendicular to the longitudinal direction (left and right direction in FIG. 2A). A first fixing portion 6b and a second fixing portion 6c for the soundproof panel 21 or 22 are provided at both ends connected to the curved surface portion 6a. As a typical form, as shown in FIG. 2A, the curved surface portion 6a is formed in a mountain shape, and the extending directions of the first fixing portion 6b and the second fixing portion 6c are substantially parallel to each other. It is formed in a substantially hat-shaped cross section, and has a curved surface portion 6a that is flexible or has a spring effect, so that the horizontal and vertical strain generated between the adjacent soundproof panels 22A and 22B can be reduced. It is formed so that it can be absorbed.

  Further, the method of fixing the soundproof panels 22A and 22B adjacent to each other through the gap and the adjusting member 6 is not particularly limited. From the viewpoint of workability, it is preferable to fix the other soundproof panel 22B by welding or an adhesive. 2A shows an example in which the soundproof panel 22A is fixed with a bolt 71 and the other soundproof panel 22B is fixed with a weld 81. FIG. Moreover, the modification of FIG.2 (b) shows the example fixed with the welding 72 with respect to one soundproof panel 22A, and fixed with the adhesive agent 82 with respect to the other soundproof panel 22B.

  Next, the operation of the first embodiment configured as described above will be described. First, the soundproof panels 21 and 22 constituting the soundproof tank 2 are provided for providing an adjustment member 6 having a required spring effect at a design stage in advance at a connecting portion where an accumulation error occurs and a strain relief adjustment work is required. A predetermined gap 5 is secured. In the example of FIG. 1, the adjustment member 6 is configured to be installed at three connection portions A1 in the plurality of soundproof panels 22 (22A, 22B, 22C, 22D) on the upper side. When assembling the soundproof tank 2, a plurality of lower soundproof panels 21 (21A, 21B, 21C,...) Are connected to each other to assemble the lower half of the soundproof tank 2. In the first stage of assembly, the fastening means 4 is temporarily tightened, and the final tightening is performed step by step in order to disperse the strain by a conventionally known technique. Next, the upper soundproof panel 22 is sequentially assembled by the fastening means 4 on the assembled lower soundproof tank.

  Next, the one soundproof panel 22 </ b> A and the other soundproof panel 22 </ b> B adjacent to each other through the gap 5 are connected by the adjustment member 6. At this time, if there is a vertical step as shown in FIG. 2, it is fixed with a bolt 71 to the low step side (one soundproof panel 22A on the left side of the figure in this example) (FIG. 2 (a) )), Or is fixed by welding 72 in a state in which the upper side of the first fixing portion 6b of the adjustment member 6 is pressed (FIG. 2B). Accordingly, the second fixing portion 6c on the right side of the adjustment member 6 in the drawing contacts the other soundproof panel 22B in a pressed state by a spring effect. The contact portion with respect to the other soundproof panel 22B is easily connected by being fixed by welding 81 (FIG. 2A) or adhesive 82 (FIG. 2B).

  Further, the soundproof panels 22B and 22C and the soundproof panels 22C and 22D are sequentially connected in the same manner by the adjusting member 6, and the step generated between the soundproof panels is caused by the spring effect due to the flexibility of the adjusting member 6. Absorb with. In FIG. 1, the adjustment member 6 is inserted into each of the three connecting portions A1 between the plurality of soundproof panels 22 on the upper side. However, the adjustment member 6 may be installed at one location. Further, although the detailed illustration of the soundproof structure of the soundproof panels 21 and 22 is omitted, for example, a soundproof structure according to a known prior art can be preferably used without any particular limitation.

  As described above, according to the first embodiment, among the connection portions A of the soundproof panel 21 or 22, at least one connection portion A1 where an accumulation error occurs and a strain relief adjustment operation is required, A predetermined gap 5 is provided, and one soundproof panel and the other soundproof panel which are adjacent to each other via the gap 5 are connected by a flexible adjustment member 6. Loosening work and strain relief work can be eliminated. Further, since the adjustment member 6 has flexibility to exhibit a spring effect, the adhesion to the soundproof panel is good, sound leakage is prevented, and the effect of reducing noise is obtained. Thereby, the horizontal and vertical distortion can be absorbed. In addition, work efficiency can be improved, contributing to quality improvement.

Embodiment 2. FIG.
FIG. 3 shows a main part of a stationary induction device according to Embodiment 2 of the present invention. FIG. 3 (a) is a cross-sectional view of the main part showing the structure of a connecting part using an adjusting member, and FIG. It is principal part sectional drawing which shows the modification. In the first embodiment, the adjustment member 6 has a substantially symmetrical hat shape. However, in the second embodiment, planar fixings provided at both ends connected to the central curved surface portion 61a formed in a mountain shape. An example in which the number of bendings during processing of the adjustment member 61 is reduced by forming the one extending direction of the portions 61b and 61c and the other extending direction so as to be asymmetrical in a direction substantially orthogonal to each other. Is. That is, in the adjustment member 61, the fixing portion 61b shown on the left side of the drawing is formed in the same shape as in the first embodiment, but the fixing portion 61c formed on the right side of the drawing is not bent, and the direction is substantially orthogonal. Is formed extending downward in the figure. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  When the adjacent soundproof panels 21A and 21B are connected to each other through the gap 5 using the adjusting member 61 formed as described above, in the example shown in FIG. The other soundproof panel 22B) on the right side is inserted so that the fixing portion 61c contacts the side surface portion B in a pressed state, and the bolt 71 is inserted into the upper portion of the one soundproof panel 22A having a low step as in the first embodiment. And bonded to the adjacent soundproof panel 22B by the adhesive 82. The bolt 71 may be changed to welding, or the adhesive 82 may be changed to welding, and both may be fixed by welding 72 and 81 as shown in FIG. In addition, although the side with a low level | step difference was fixed with the volt | bolt 71 or the welding 72, if the length dimension of the fixing | fixed part 61c is ensured, conversely, the higher level | step difference can also be fixed with a volt | bolt or welding.

  As described above, according to the second embodiment, at least one connecting portion A1 portion in which the accumulation error occurs and the strain relief adjustment work is required among the connecting portions A of the soundproof panel 21 or 22 is predetermined. In addition, the one soundproof panel 22A and the other soundproof panel 22B adjacent to each other through the gap 5 are connected by a flexible left-right asymmetric adjustment member 61. The same effects as those of the first embodiment can be obtained, such as the bolt loosening work for adjustment and the strain removing work being unnecessary. Moreover, since the adjustment member 61 can reduce a process, an apparatus can be made cheap. Furthermore, the second embodiment has an advantage that the side to be fixed by bolts or welding can be selected regardless of the level of the step.

  In the first and second embodiments, the soundproof tank 2 includes a plurality of soundproof panels 21 (21A, 21B, 21C,...) On the lower side and a plurality of soundproof panels 22 (22A, 22B,. 22C, 22D) has been described, but the present invention is not limited to this.

It is a perspective view which shows notionally the soundproof tank part which is the principal part of the static induction appliance concerning Embodiment 1 of this invention. (A) is an arrow directional cross-sectional view in the II-II line | wire of FIG. 1, (b) is sectional drawing which shows the modification of Fig.2 (a). FIG. 3 (a) shows a main part of a stationary induction device according to Embodiment 2 of the present invention, FIG. 3 (a) is a main part sectional view showing the structure of a connecting part using an adjusting member, and FIG. 3 (b) is a modification thereof. It is principal part sectional drawing which shows an example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Static induction machine, 2 Soundproof tank, 21 (21A, 21B, 21C, ...) Soundproof panel (lower part), 22 (22A, 22B, 22C, 22D) Soundproof panel (upper part), 3 Connection part, 4 Fastening means , 5 gap, 6, 61 adjustment member, 6a, 61a curved surface part, 6c, 61c first fixing part, 6d, 61d second fixing part, 71 bolt, 72 welding, 81 welding, 82 adhesive, A, A1 Connection part, B side part.

Claims (6)

  In a static induction appliance comprising a static induction electric device body and a soundproof tank comprising a plurality of soundproof panels connected to each other and surrounding the stationary induction electric device body, a connection portion of the soundproof panel is provided. At least one of them is provided with a predetermined gap between adjacent soundproof panels, and one soundproof panel and the other soundproof panel which are adjacent to each other through the gap are connected by a flexible adjustment member. A static induction appliance characterized by   The adjusting member includes a curved surface portion formed in a central portion of a cross section in a direction orthogonal to the longitudinal direction, and a first fixing portion and a second fixing portion for the soundproof panel respectively formed at both end portions connected to the curved surface portion. The static induction machine according to claim 1, wherein   The static induction device according to claim 2, wherein the curved surface portion is formed to project in a mountain shape.   The stationary induction device according to claim 2 or 3, wherein extending directions of the first fixing portion and the second fixing portion are formed substantially parallel to each other.   4. The stationary induction device according to claim 2, wherein the extending directions of the first fixing portion and the second fixing portion are formed in directions substantially orthogonal to each other. 5. The first fixing part of the adjustment member is fixed to the one soundproof panel adjacent to the other through a gap by welding or bolts, and the second fixing part of the adjustment member is the other fixing part adjacent to the other through the gap. The stationary induction device according to any one of claims 2 to 5, wherein the static induction device is fixed to the soundproof panel by welding or an adhesive.

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