JPH08250345A - Stationary induction electric equipment - Google Patents

Abstract

PURPOSE: To lessen sounds which pass through a joint between sound-proof plates so as to reduce all noises produced by an equipment to a required noise specification level. CONSTITUTION: Iron sound-proof plates 10 are linked together to form a sound- proof tank 3a. A sound-proof plate sound absorbing material 13 is arranged apart from the plate 10 by a suitable distance confronting an electric equipment main body downward and fixed to the plate 10 by a fixing piece 14. The iron sound-proof plates 10 are joined together by an assembly guide 15, a seat 16, and a bolt 17. A joint sound-insulating plate 18 is arranged apart from the plate 10 by an adequate distance between the reinforcing materials 11 and 12 located at the ends of the adjacent iron sound-proof plates 10 and fixed to the reinforcing materials 11 and 12. A joint sound absorbing material 19 is arranged under the joint sound-insulating plate 18 apart from it by an adequate distance confronting an electric equipment main body downward and fixed to the joint sound-insulating plate 18 by fixing pieces 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static induction electric device such as a transformer or a reactor, and in particular, a static induction device in which a main body of an electric device which is a noise source is surrounded by a soundproof wall composed of a soundproof plate. The present invention relates to induction electric equipment.

[0002]

2. Description of the Related Art In static induction electric equipment such as transformers and reactors, a large noise is generated from the electric equipment main body during operation. The causes of this noise are (1) magnetic distortion of the iron core material, and (2) magnetic vibration of the iron core due to the magnetic attraction force acting between the seams of the iron core and between the laminated plates. This sound becomes a large noise of 70 to 80 dB (A) in a large capacity device. In recent years, the number of cases where electric power equipment is installed in urban areas has increased, and the noise of this equipment causes noise and adversely affects the surroundings. Therefore, there is an increasing need from the user side to reduce the noise of the equipment.

As a measure for reducing the noise of the static induction electric equipment as described above, it is general to surround the main body of the electric equipment with a soundproof wall made of a soundproof plate. FIG. 3 is a schematic cross-sectional view showing an example of a general static induction electric device using such a soundproof wall. As shown in this FIG.
A soundproof wall 3 is provided so as to cover the side surface and the upper surface of the electric device body 2 installed above. This sound barrier 3
Is composed by assembling multiple soundproof plates such as iron plates and concrete panels. In general, in order of user's low noise specifications, sound barriers such as concrete building method, concrete panel soundproof tank method, iron soundproof tank method with sound absorbing material, iron soundproof tank method, iron soundproof cover method, etc. are installed. ing.

FIG. 4 is a schematic cross-sectional view showing the structure of a soundproof wall (soundproof tank) of an iron soundproof tank system with sound absorbing material. As shown in FIG. 4, the soundproof tank 3a is configured to cover the electric device body 2 by connecting a plurality of iron soundproof plates 10 with sound absorbing materials.

FIG. 5 is a cross-sectional view showing the structure of the iron soundproof plate 10 with sound absorbing material and its connecting portion of the soundproof tank 3a of FIG. As shown in FIG. 5, a reinforcing material 11 having a linear cross section and a reinforcing material 12 having an L-shaped cross section are attached to the electric device main body side (lower side in the drawing) of the iron soundproof plate 10 while being appropriately separated from each other. There is. Then, between the facing surfaces of the two reinforcing members 11 and 12, the sound absorbing plate sound absorbing member 13 that absorbs the sound that is going to pass through the iron sound insulating plate 10 is appropriately separated from the iron sound insulating plate 10. , The soundproof board 10 made of iron by the fixing bracket 14
Attached to. It should be noted that, in this figure, with respect to one iron soundproof plate 10, only two reinforcing members 11 and 12 are shown attached to both ends of the iron soundproof plate 10. The above-mentioned reinforcing materials are appropriately separated and attached. Then, in such a case, the sound absorbing plate sound absorbing material 13 is attached between the reinforcing materials.

Further, as shown in FIG. 5, an iron soundproof plate 10 is provided.
The connection between the assembly guide 15, the seat 16, and the bolt 1
It is done by 7. That is, at the connecting portion between the two iron soundproofing plates 10, one end of the reinforcing member 12 having an L-shaped cross section provided at the end of one iron soundproofing plate 10 projects from the tip of the iron soundproofing plate 10. An assembly guide 15 is fixed to the electric device body side (lower side in the drawing) of the protruding end. The reinforcing member 11 having a linear cross section is provided on the electric device body side (lower side in the drawing) of the opposite end of the other iron soundproof plate 10.
The seat 16 is fixed to the tip end position more than the tip end. Then, the assembly guide 15 and the seat 16 are fastened with bolts 17 to connect the iron soundproof plates 10.

After the iron soundproof plates 10 are connected by the assembly guides 15, the seats 16 and the bolts 17 in this manner, the iron soundproof plate 10 adjacent to the reinforcing member 12 having the L-shaped cross section of one of the iron soundproof plates 10 is connected. The overlapping part with the board 10,
The soundproof tank 3a is welded and fixed all around the soundproof tank 3a.
Complete a.

In the soundproof tank 3a of FIG. 5 constructed as described above, the sound generated from the electric equipment main body is first absorbed by the soundproof plate sound absorbing material 13. In this case, even if a part of the sound is transmitted through the sound absorbing plate sound absorbing material 13, this sound is reflected by the iron sound insulating plate 10, so that the sound leaking to the outside is extremely small. Therefore, it is possible to obtain a predetermined soundproof effect required for the iron soundproof tank with the sound absorbing material.

[0009]

However, in spite of the construction of the iron soundproof tank with the sound absorbing material as described above,
In the performance test of static induction electrical equipment, the noise reduction amount may not meet the low noise specifications required by the user. The causes of this are (1) excessive noise of the electric device body, (2) a lot of sound transmitted through the connecting portion between the iron soundproof plates, and (3) sound leaking through the iron soundproof plate. It is possible that the value is slightly higher than the design value.

The present invention has been made in consideration of the above-mentioned reason that the noise reduction is limited, in particular, the reason (2) that a large amount of sound is transmitted through the connecting portion between the iron soundproof plates. It is a thing. In addition, the problem of sound transmission in such a connection part is a concrete panel soundproof tank system connection part that connects a plurality of concrete panels as a soundproof plate, and a plurality of iron soundproof plates without sound absorbing materials for soundproof plates. The same is also present in the connection part of the iron soundproof plate of the iron soundproof tank system and the iron soundproof cover system that are connected.

That is, the first object of the present invention is to improve the connecting portion between the soundproof plates so that the soundproof plates are not connected to the low noise specification required to reduce the noise only by connecting the soundproof plates in a normal manner. In such a case, it is an object of the present invention to provide a static induction electric device capable of reducing the sound transmitted through the connecting portion between the soundproof plates and keeping the noise of the entire device within the required low noise specification value. A second object is to provide a static induction electric device in which the noise of the entire device is kept within the required low noise specification value and the structure of the connecting portion is simple.

[0012]

In order to achieve the above object, the present invention comprises an electric device body and a soundproof wall surrounding the electric device body, and the soundproof wall connects a plurality of soundproof plates. The static induction electric device configured is characterized in that the soundproof wall is configured as follows.

In the static induction electric equipment according to claim 1, the soundproof wall is provided on the electric equipment main body side of each connecting portion between the plurality of soundproofing plates and spaced apart from each soundproofing plate, and the connecting portion is allowed to penetrate therethrough. It has a sound insulation plate for the connecting portion which reflects the sound.

The static induction electric device according to a second aspect is characterized in that, in addition to the configuration according to the first aspect, a soundproof wall is further configured as follows. That is, claim 2
In the static induction electric device described above, the soundproof wall has a plurality of reinforcing members provided on the electric device body side of the plurality of soundproof plates and spaced apart from each other. The sound insulation plate for connecting portion is arranged between the reinforcing members at the ends of the adjacent sound insulation plates.

The stationary induction electric device according to claim 3 is characterized in that, in addition to the structure according to claim 1, the soundproof wall is further structured as follows. That is, claim 3
In the static induction electric device according to the description, the soundproof wall is provided on the electric device main body side of the sound insulating plate for the connecting portion so as to be separated from the sound insulating plate for the connecting portion, and for the connecting portion that absorbs the sound that tries to pass through the connecting portion. It further has a sound absorbing material.

The static induction electric device according to a fourth aspect is characterized in that, in addition to the configuration according to the third aspect, a soundproof wall is further configured as follows. That is, claim 4
In the static induction electric device described above, the soundproof wall has a plurality of reinforcing members provided on the electric device body side of the plurality of soundproof plates and spaced apart from each other. Then, the sound insulation plate for the connecting portion and the sound absorbing material for the connecting portion are arranged between the reinforcing members at the end portions of the adjacent soundproofing plates.

[0017]

The operation of the present invention having the above construction is as follows. That is, according to the invention of claim 1,
The sound generated from the main body of the electric device and transmitted through the connecting portion between the soundproof plates is reflected by the connecting portion sound insulating plate provided in the connecting portion, so that the sound passing through the connecting portion can be reduced, The noise of the entire device can be reduced.

According to the second aspect of the invention, since the sound insulating plate for the connecting portion is arranged by utilizing the existing reinforcing material provided on the sound insulating plate, the sound insulating plate for connecting portion is used to connect the sound insulating plates. The sound transmitted through the connecting portion can be reduced, and the structure of the connecting portion can be simplified.

According to the third aspect of the present invention, the sound generated from the main body of the electric device and transmitted through the connecting portion between the soundproof plates is first absorbed by the sound absorbing material for the connecting portion provided in the connecting portion. Further, the sound transmitted through the sound absorbing material for the connecting portion is reflected by the sound insulating plate for the connecting portion provided in the connecting portion. Therefore, in the connecting portion between the soundproof plates, the sound transmission plate for the connecting portion and the sound absorbing material for the connecting portion can doubly block the transmission of sound, so that the sound transmitted through this connecting portion can be significantly reduced, and The overall noise can be reduced significantly.

According to the invention as set forth in claim 4, since the sound insulating plate for the connecting portion and the sound absorbing material for the connecting portion are arranged by utilizing the existing reinforcing material provided on the sound insulating plate, the sound insulating material for the connecting portion is arranged. The sound transmitted through the connecting portion between the soundproof plates can be significantly reduced by the sound absorbing material for the plate and the connecting portion, and the structure of the connecting portion can be simplified.

[0021]

EXAMPLES Specific examples of the static induction electric equipment according to the present invention as described above will be described below. The same parts as those in the conventional example shown in FIGS. 3 to 5 are designated by the same reference numerals. [1] First Embodiment FIG. 1 FIG. 1 is a view showing a first embodiment in which the inventions of claims 1 to 4 are applied to an iron soundproof tank with a sound absorbing material. As shown in FIG. 1, a reinforcing member 11 having a linear cross section and a reinforcing member having an L-shaped cross section are provided at both ends of the iron soundproof plate 10 constituting the soundproof tank 3a on the electric device body side (lower side in the figure). 12 are attached respectively. Then, between the facing surfaces of the two reinforcing members 11 and 12, the sound absorbing plate sound absorbing member 13 that absorbs the sound that is going to pass through the iron sound insulating plate 10 is appropriately separated from the iron sound insulating plate 10. It is attached to the iron soundproof plate 10 by the fixing bracket 14. The above configuration is
This is similar to the conventional example shown in FIG. Also, an iron soundproof plate 1
As for the connection between 0s, as in the conventional example shown in FIG.
It is performed by the assembly guide 15, the seat 16, and the bolt 17.

In the present embodiment, in addition to the above-mentioned structure, a sound insulating plate 18 for a connecting portion and a sound absorbing material 19 for a connecting portion are further provided at a connecting portion between adjacent iron soundproof plates 10. That is, the sound insulation plate 18 for the connecting portion is disposed between the reinforcing members 11 and 12 at the ends of the adjacent iron sound insulation plates 10 while being appropriately separated from the iron sound insulation plate 10 to a position where there is no hindrance in assembly, and both ends thereof. And is fixed to the reinforcing members 11 and 12. In addition, the sound absorbing material 19 for the connecting portion is the sound insulating plate 18 for the connecting portion.
The sound insulation plate 18 for the connecting portion is provided on the electric device main body side (lower side in the figure)
Are appropriately separated from each other and are attached to the iron soundproofing plate 10 by the fixing brackets 14.

The operation of this embodiment having the above construction is as follows. That is, the sound generated from the main body of the electric device and attempting to pass through the general part of the iron soundproof plate 10 is absorbed by the soundproof plate sound absorbing material 13. In this case, even if a part of the sound is transmitted through the sound absorbing plate sound absorbing material 13, this sound is reflected by the iron sound insulating plate 10, so that the sound leaking to the outside is extremely small.

Further, the sound generated from the main body of the electric device and transmitted through the connecting portion between the iron soundproof plates 10 is first absorbed by the connecting portion sound absorbing material 19 provided in the connecting portion. In this case, even if a part of the sound is transmitted through the sound absorbing member 19 for the connecting portion, this sound is reflected by the sound insulating plate 18 for the connecting portion, so that the sound leaking to the outside is extremely small.

As described above, according to this embodiment,
In particular, in the connecting portion between the iron soundproofing plates 10, the sound absorbing member 19 for connecting portion absorbs sound and the sound insulating plate 18 for connecting portion reflects sound, so that the sound transmitted through the connecting portion is doubly blocked. , The sound transmitted through the connecting portion can be significantly reduced as compared with the conventional case. In this case, although the sound transmitted through the sound insulation plate 18 for the connecting portion still exists, this sound volume can be reduced to a value that is allowed as the device performance, so that a predetermined soundproof effect required for the soundproof tank 3a can be obtained. You can [2] Second Embodiment FIG. 2 FIG. 2 is a view showing a second embodiment in which the inventions of claims 1 to 4 are applied to a concrete panel type soundproof tank. As shown in FIG. 2, in this embodiment, the iron soundproof board 10 of the first embodiment described above is replaced with a concrete panel 20. That is, in the concrete panel 20, a steel plate 22 whose both ends are bent is fixed to a flat steel plate 21, and a concrete pouring space secured between the pair of steel plates 21 and 22 is Concrete 23 is poured and hardened to form. The concrete panel 20 is arranged such that the flat plate-shaped steel plate 21 is on the electric device body side (lower side in the drawing).

Further, a pair of reinforcing members 11 and 12 each having a linear cross section are attached to both ends of the steel plate 21 on the main body side (lower side in the figure) of the concrete panel 20. Then, between the facing surfaces of the two reinforcing materials 11 and 12, a sound absorbing material 13 for a soundproof plate that absorbs sound that is going to pass through the concrete panel 20 is appropriately separated from the concrete panel 20 and fixed. It is attached to the steel plate 21 of the concrete panel 20 by the metal fitting 14. Further, the connection between the concrete panels 20 is performed by the assembly guide 15 provided at the end of the steel plate 21 of the one concrete panel 20, the seat 16 provided at the end of the steel plate 21 of the other concrete panel 20, and the bolt. 17
Is done by. Furthermore, concrete panel 2
A connecting plate 24 is arranged on the opposite side of the connecting portion between 0s from the main body of the electric device so as to cover the abutting portion of the steel plates 22 of the two concrete panels, and is fixed to the steel plates 22 on both sides.

Then, the adjacent concrete panel 20
Similar to the first embodiment, the connecting portions are further provided with a connecting portion sound insulating plate 18 and a connecting portion sound absorbing material 19. That is, the sound insulation plate for connecting portion 18 is arranged between the reinforcing members 11 and 12 at the ends of the adjacent concrete panels 20 so as to be appropriately separated from the concrete panel 20 to a position where there is no hindrance in assembly, and is reinforced at both ends thereof. It is fixed to the materials 11 and 12. Further, the sound absorbing material 19 for the connecting portion is arranged on the electric device main body side (lower side in the figure) of the sound insulating plate 18 for the connecting portion so as to be appropriately separated from the sound insulating plate 18 for the connecting portion, and the concrete panel 20 is fixed by the fixing bracket 14. Is attached to.

The operation of this embodiment having the above construction is as follows. That is, the sound generated from the main body of the electric device and trying to pass through the general portion of the concrete panel 20 is absorbed by the sound absorbing material 13 for the soundproof plate. In this case, even if a part of the sound passes through the sound absorbing plate sound absorbing material 13,
Since this sound is reflected by the concrete panel 20, the sound leaking to the outside is extremely small.

Further, the sound generated from the main body of the electric device and transmitted through the connecting portion between the concrete panels 20 is first absorbed by the sound absorbing material 19 for connecting portion provided in this connecting portion. In this case, part of the sound is the sound absorbing material 1 for the connecting portion.
Even after passing through 9, the sound is reflected by the sound insulation plate 18 for the connecting portion, so that the sound leaking to the outside is extremely small.

As described above, according to this embodiment,
In particular, in the connecting portion between the concrete panels 20, as in the first embodiment, due to the sound absorbing effect of the connecting portion sound absorbing material 19 and the sound reflecting effect of the connecting portion sound insulating plate 18,
The sound penetrating the connecting part is double blocked, and the sound penetrating the connecting part can be significantly reduced compared to the conventional case. In this case, although the sound transmitted through the sound insulation plate 18 for the connecting portion still exists, this sound volume can be reduced to a value that is allowed as the device performance, so that a predetermined soundproof effect required for the soundproof tank 3a can be obtained. You can The construction of the concrete panel soundproof tank system of the present embodiment is suitable when there is a higher demand for low noise specifications than the construction of the steel soundproof tank system with sound absorbing material as in the first embodiment. [3] Other Embodiments The present invention is not limited to the above embodiments, and various other modified examples can be implemented. For example, as a modification of the first and second embodiments, it is possible to provide only the sound insulation plate 18 for the connecting portion and not the sound absorbing material 19 for the connecting portion. In this case, the sound absorbing material 19 for the connecting portion
The effect of reducing the transmitted sound is halved by omitting
When the requirement for low noise specifications is not so high, a sufficient effect can be obtained with only the sound insulating plate 18 for the connecting portion. Furthermore, the present invention can be similarly applied to the case where one soundproof plate has three or more reinforcing members, or conversely, when there is no reinforcing member. Further, the specific connection structure of the connecting portion, the structure of the soundproof plate, and the like can be changed as appropriate.

On the other hand, in the above-mentioned embodiment, the present invention is applied to the static induction electric equipment having the soundproof wall made of the steel soundproof tank with the sound absorbing material and the static induction electric equipment having the soundproof wall made of the concrete panel soundproof tank. Although the case has been described, the present invention is not necessarily applied only to a static induction electric device having a soundproof wall with a sound absorbing material for a soundproof plate. That is, the present invention is also applicable to various static induction electric devices having various soundproof walls such as an iron soundproof tank system and an iron soundproof cover system in which a plurality of iron soundproof plates having no sound absorbing material for soundproof plates are connected. It is applicable, and in that case, the same excellent action and effect as those of the above-mentioned embodiment can be obtained.

[0032]

As described above, according to the present invention,
By providing a sound insulating plate for the connecting portion at the connecting portion between the soundproof plates, by the sound reflecting action of the sound insulating plate for the connecting portion,
Since the sound transmitted through the connecting portion between the soundproof plates is reduced, it is possible to provide a static induction electric device capable of keeping the noise of the entire device within the required low noise specification value.

Particularly, when a sound absorbing material for the connecting portion is provided in addition to the sound insulating plate for the connecting portion, the sound absorbing plate is provided by the sound absorbing function of the sound absorbing material for the connecting portion and the sound reflecting function of the sound insulating plate for the connecting portion. Because the sound that penetrates the connection part between can be further reduced,
It is possible to provide a static induction electric device capable of keeping the noise of the entire device within a highly demanded low noise specification value.

Further, when the sound insulation plate for the connecting portion and the sound absorbing material for the connecting portion are arranged between the reinforcing members provided on the soundproofing plate, it is possible to provide a static induction electric device having a simple connecting portion configuration. You can

Further, when the present invention is applied to a soundproof wall having a structure in which the absolute number of connecting parts of the soundproof plate is large due to a special factor in the structure of electric equipment, a greater effect can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a static induction electric device according to the present invention.

FIG. 2 is a sectional view showing a second embodiment of the static induction electric device of the invention.

FIG. 3 is a schematic cross-sectional view showing an example of a general static induction electric device using a soundproof wall.

FIG. 4 is a schematic cross-sectional view showing the configuration of a conventional soundproof wall (soundproof tank) of a steel soundproof tank system with sound absorbing material.

FIG. 5 is a cross-sectional view showing the configuration of the iron soundproofing plate of FIG. 4 and its connecting portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Foundation 2 ... Electric equipment body 3 ... Soundproof wall 3a ... Soundproof tank 10 ... Iron soundproof board 11, 12 ... Reinforcement material 13 ... Soundproof board sound absorbing material 14 ... Fixing metal fitting 15 ... Assembly guide 16 ... Seat 17 ... Bolt 18 ... Sound insulation plate for connection part 19 ... Sound absorbing material for connection part 20 ... Concrete panels 21, 22 ... Steel plate 23 ... Concrete 24 ... Connection plate

Claims (4)

[Claims] 1. A static induction electric device comprising an electric device main body and a soundproof wall surrounding the electric device main body, the soundproof wall being configured by connecting a plurality of soundproof plates, wherein the soundproof wall is a plurality of the soundproof walls. The stationary body is provided with a sound insulating plate for a connecting portion, which is provided at a side of the electric device main body of each connecting portion between the sound insulating plates so as to be separated from each sound insulating plate and reflects a sound trying to pass through the connecting portion. Induction electrical equipment. 2. The soundproof wall has a plurality of reinforcing members provided on the electric device main body side of the plurality of soundproof plates so as to be spaced from each other, and the sound insulating plates for connecting portions are adjacent to each other. The stationary induction electric device according to claim 1, wherein the stationary induction electric device is arranged between the reinforcing members at the ends of the. 3. The soundproof wall is provided on the electric device body side of the sound insulation plate for the connection part, which is spaced apart from the sound insulation plate for the connection part, and which absorbs sound transmitted through the connection part. The stationary induction electric device according to claim 1, further comprising a sound absorbing material for use. 4. The soundproof wall has a plurality of reinforcing members provided on the electric device body side of the plurality of soundproof plates and spaced apart from each other, the sound insulating plate for the connecting portion and the sound absorbing material for the connecting portion. The static induction electric device according to claim 3, wherein is disposed between the reinforcing members at the ends of the adjacent soundproof plates.