JP2000077238A - Stationary induction electric equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stationary induction electric equipment, in which vibration isolation and noise reduction can be made high, man-hours for manufacturing can be reduced, and vibration prevention can be made high. SOLUTION: A tank 2, in which a stationary induction electric equipment main body 1 is housed and insulating oil or insulating gas is packed, is set on a base 6. An upper reinforcing beam 4 and a lower reinforcing beam 5 are mounted in a horizontal direction on a tank side face 3. An upper common support 21 having an L-shaped cross-section is mounted to the upper reinforcing beam 4. An upper support point 36 is arranged inside an upper common support member 21, and a lower support point 9 is arranged at the lower part on the tank side face 3. A sound insulating board 7 is mounted between the upper support point 36 and the lower support point 9, so that the outer surface of the tank side face is covered. Three sound insulating boards 7 are mounted on the tank side face 3. Each of the upper support points 36 of the sound shield boards 7 are arranged inside the L-shaped upper common support member 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stationary induction device in which a stationary induction device main body is accommodated in a tank, and more particularly to a stationary induction device in which a sound insulating plate is attached around a tank as a soundproofing measure.

[0002]

2. Description of the Related Art In recent years, regulations on noise have been stricter from the viewpoint of environmental harmony, and there has been a strong demand for lowering the noise of static induction devices such as transformers. First, as a cause of the noise of the stationary induction device, there is vibration caused by an electromagnetic force acting on the iron core and the windings of the stationary induction device main body. Then, these vibrations propagate to the tank housing the stationary induction device main body, and radiate sound to the surroundings when the tank side vibrates.

As a means for preventing such diffusion of radiated sound, a method of storing a stationary induction device in a soundproof building made of an iron plate or the like can be considered.
There is a problem that the installation area increases. Therefore, measures for providing a sound insulating plate around the tank have been widely implemented. This sound insulation plate reduces the sound radiated from the side of the tank due to a reduction effect when sound passes through the sound insulation plate, that is, due to transmission loss. In addition, consideration is given to the configuration so that the sound insulation plate itself does not vibrate due to the vibration of the tank side surface and generate noise.

[0004] An example of a stationary induction device using a sound insulating plate as a soundproofing measure as described above will be specifically described with reference to FIGS. That is, as shown in FIG. 15, the stationary induction device main body 1 is housed in the tank 2. An upper reinforcing beam 4 and a lower reinforcing beam 5 of the tank 2 are provided on the tank side surface 3. The upper reinforcement beam 4 is provided with an upper support point 8, and a lower support point 9 is provided below the tank side surface 3. Between the upper support point 8 and the lower support point 9, a sound insulating plate 7 that covers the tank side surface 3 is attached around the tank 2. The sound insulating plate 7 is a sound insulating plate main body 1.
4. It is composed of elastic elements 15, 16 and sealing materials 17, 18. As shown in FIG. 16, the sound insulating plate main body 14 is formed on a flat plate 11 by a band-shaped reinforcing rib 12 surrounding the flat plate 11.
And a belt-shaped reinforcing rib 13 for dividing the surface. The elastic element 15 is disposed between the sound insulating plate main body 14 and the upper support point 8, and the elastic element 16 is disposed between the sound insulating plate main body 14 and the lower support point 9. The sealing materials 17 and 18 have flexibility, and seal the gap generated between the sound insulating plate main body 14 and the tank side surface 3 due to the arrangement of the elastic elements 16 and 15.

In the prior art described above, the sound insulating plate 7 has an effect of attenuating the sound radiated from the tank side surface 3 covered by the sound insulating plate 7 by transmission loss. At the same time, the vibration insulation of the sound insulation plate main body 14 is performed by the elastic elements 15 and 16 in order to reduce the generation of noise from the sound insulation plate 7 itself. In addition, the reinforcing ribs 12 and 13 increase the bending rigidity of the sound insulating plate main body 14, thereby preventing bending vibration of the sound insulating plate main body 14 and making the vibration system composed of the elastic elements 15, 16 and the sound insulating plate main body 14 ideal. It is close to a one-degree-of-freedom system. Therefore, the vibration insulating effect by the elastic elements 15 and 16 is improved, and the vibration of the sound insulating plate main body 14 is suppressed, so that the noise radiated from the sound insulating plate main body 14 can be reduced.

Further, the provision of the elastic elements 15 and 16 creates a gap between the sound insulating plate main body 14 and the tank side surface 3. However, the flexible sealing materials 17 and 18 prevent the sound radiated from the tank side surface 3 from leaking from the space inside the sound insulating plate 1 to the outside through this gap.

Next, the sound insulating plate main body 14 may be made of a damping steel plate to enhance the damping effect of the sound insulating plate. The damping steel sheet is formed integrally with a plurality of steel sheets sandwiching a polymer viscoelastic material, and is known to have high damping ability against vibration.

[0008] Further, as shown in FIG.
One that is attached to the tank side 3 has also been proposed.
By using a plurality of divided sound insulation plates 7 as described above, one sound insulation plate 7 can be reduced in size, and manufacturing and transportation can be facilitated.

Further, as shown in FIG. 18, there has been proposed a structure in which a sound absorbing material 18 made of glass wool or the like is adhered to the inner wall of the sound insulating plate main body 14. Thus, the sound absorbing material 1
9, the reflection of sound can be reduced, and the noise level in the space inside the sound insulating plate 7 can be reduced.
Noise that leaks through the sealing materials 17 and 18 is further reduced.

[0010]

By the way, in the prior art shown in FIG. 15, the reinforcing ribs 12 and 13 increase the bending rigidity of the sound insulating plate body 14 and the elastic elements 15 and 16.
Thus, a vibration isolation support is formed, and vibration isolation is performed from the tank side surface 3. This is equivalent to a vibration system in which a continuum is elastically supported, but as in the case of a general one-degree-of-freedom system, the lower the natural frequency calculated from the mass and the spring constant, the better the vibration isolation performance with respect to the input. With the property. Therefore, in order to promote vibration suppression, it is desirable to make the elastic supports 15 and 16 flexible and set the natural frequency of the sound insulating plate 7 low. However, at the same time, the natural frequency of the sound insulating plate 7 approaches the predominant frequency region of the earthquake. By setting the natural frequency low, the response of the sound insulating plate body 14 to the earthquake input increases, and the May cause vibration. As described above, when the vibration is suppressed, the seismic performance of the sound insulating plate 7 is reduced.

In the prior art shown in FIG.
When the number of sound insulation plates 7 increases, the number of parts for the upper support points 8 and the lower support points 9 provided on the tank side surface 3 also increases. When a flange, a pipe, or the like is arranged on the tank side surface 3, the upper support point 8 and the lower support point 9 cannot be arranged at optimal positions, or a member having a complicated shape may be required. Furthermore, due to assembly errors, the sound insulation plate body 1
4. When the positions of the upper support point 8 and the lower support point 9 are shifted from each other, both the position and the interval of the gap between the two support the sound insulating plate 7.
Therefore, it is not easy to attach the sealing materials 17 and 18 to the gap. Thus, the sound insulating plate 7
If the number is increased, the number of manufacturing steps will increase.

[0012] Further, in the prior art as described above,
The gap between the sound insulation plate 7 and the tank side surface 3 is
18 to prevent sound leakage from the gap. For this reason, the inside of the sound insulating plate 7 is a closed space, but such a closed space is not preferable in terms of maintenance work safety. On the other hand, if the noise level inside the sound insulating plate 7 can be sufficiently reduced, it is possible to suppress the leaking noise even if the gap is left open. Therefore, for example, FIG.
As shown in the related art, it is conceivable to reduce the noise level inside the sound insulating plate 7 by attaching a sound absorbing material 19 to the inner wall of the sound insulating plate body 14. It is difficult to obtain a sufficient effect to eliminate the need for 17, 18. The reason is that the sound insulating plate 7
Is related to the standing wave of the noise generated inside the sound absorbing member 19 and the position of the sound absorbing material 19.

That is, the standing wave is a state in which a specific eigen acoustic mode is excited in the space, and a portion of the air where the particle velocity of air is high, called an antinode of the mode, and a part where the particle velocity of air is low, which is called a node of the mode. The parts occur alternately, resulting in an increase in noise level. It is known that the sound absorbing material works effectively when it is arranged in the antinode where the particle velocity of air is high. However, the sound absorbing material 19 in the prior art is
Standing wave 20 in the height direction generated in the space inside sound insulating plate 7
On the other hand, a large amount of air is not arranged in the antinodes where the particle velocity of air is high, so that a large sound absorbing effect cannot be expected. Therefore, according to the conventional technique, it is not possible to obtain the same sound insulation performance as in the case where the sealing materials 17 and 18 are used while the gap is kept open.

The present invention has been proposed in order to solve the problems of the prior art as described above.
An object of the present invention is to provide a static induction device having high vibration isolation performance and noise reduction performance, a small number of manufacturing steps, and high seismic performance.

[0015]

According to the present invention, an upper support point and a lower support point are attached to the upper and lower sides of a tank accommodating a stationary induction body, and the upper support point is provided. A plurality of sound insulation plates are attached at positions covering the tank side surface between the and the lower support point, and elastic elements are respectively arranged between the sound insulation plate and the upper support point and the lower support point. The stationary induction device has the following technical features.

That is, the invention according to claim 1 has an upper common support member in which one side of a horizontal plane is attached to the side of the tank, and the other opposite side is bent downward and in a direction parallel to the side of the tank, The upper support point is provided inside the upper common support member.
According to the first aspect of the present invention, since the upper support point can be arranged at an arbitrary position inside the upper common support member, it is necessary to provide a member for the upper support point for each of the plurality of sound insulation plates. There is no. Further, even when the position in the height direction is shifted by the sound insulating plate, the gap between the sound insulating plate and the upper common support member can be kept constant, so that the sound insulating plate can be easily attached, and the number of manufacturing steps can be reduced. Reduce.

According to a second aspect of the present invention, in the stationary induction device according to the first aspect, the lower end of the sound insulating plate is disposed near a foundation on which the tank is installed, and the lower end of the sound insulating plate and the base are connected to each other. Is characterized in that a sealing material is provided in the gap. According to the second aspect of the present invention, even if the position in the height direction is shifted by the sound insulating plate, the position of the foundation is not changed at all times, so that the sealing material for sound insulating can be easily attached, and the manufacturing is facilitated. Man-hours are reduced.

According to a third aspect of the present invention, in the stationary induction device according to the second aspect, one end of a beam-like lower common support member is attached to the side surface of the tank, and the other end of the lower common support member has A plurality of lower support points of the sound insulating plate are provided. Claim 3 as described above
In the described invention, it is not necessary to provide a member for the lower support point for each sound insulating plate, and the lower support point can be arranged at an arbitrary position on the lower common support member, so that the number of manufacturing steps is reduced.

The invention according to claims 4 and 6 is characterized in that a sound absorbing material is arranged in a space between the side surface of the tank and the sound insulating plate. According to the fourth and sixth aspects of the present invention described above, the sound absorbing material can be arranged in a space where the particle velocity of air is high, so that the sound absorbing effect can be enhanced. Sufficient sound insulation performance is obtained.

According to a fifth aspect of the present invention, the space between the tank side surface and the sound insulating plate is divided by a partition, and the sound absorbing material is arranged for each of the divided spaces. It is characterized by the following. According to the above-described inventions of claims 5 and 7, since the generation of standing waves can be prevented by the partition while the sound is absorbed by the sound absorbing material, the sound insulation performance is further enhanced.

According to an eighth aspect of the present invention, there is provided the stationary induction device according to any one of the first to seventh aspects, further comprising: an inner portion of a gap between the tank side surface and the sound insulating plate near the elastic element. The sound absorbing material is arranged. According to the eighth aspect of the invention, sound leakage from the gap can be reduced by the sound absorbing material, so that the sound insulation performance is further enhanced.

According to a ninth aspect of the present invention, in the stationary induction device according to any one of the first to eighth aspects, a sealing material is provided in a gap between the side surface of the tank and the sound insulating plate near the elastic element. Are arranged.
According to the ninth aspect of the present invention, since the sound leakage from the gap can be prevented by disposing the seal material, the sound insulation performance is further improved.

According to a tenth aspect of the present invention, in the stationary induction device according to any one of the first to ninth aspects, the adjacent sound insulation plates are connected to each other. According to the tenth aspect of the present invention, since the adjacent sound insulating plates support each other, the response to the earthquake can be reduced, and the seismic performance is enhanced.

According to an eleventh aspect of the present invention, in the stationary induction device according to the tenth aspect, the sound insulation plates orthogonal to each other at a corner of the tank are connected to each other. In the invention according to claim 11 described above,
Since the orthogonal sound insulation plates support each other, the response to the earthquake can be reduced, so that the seismic performance is further improved.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) First Embodiment (Structure) One embodiment corresponding to the invention described in claims 1 and 9 will be described below with reference to FIGS. explain. FIG. 1 is a perspective side view of the stationary induction device of the present embodiment, and FIG. 2 is a front view. Note that the same members as those in the prior art shown in FIGS. 15 to 18 are denoted by the same reference numerals.

That is, as shown in FIG. 1, a tank 2 containing a stationary induction machine main body 1 therein and filled with insulating oil or gas is installed on a foundation 6. An upper reinforcing beam 4 and a lower reinforcing beam 5 are attached to the tank side surface 3 vertically in the horizontal direction. An upper common support member 21 is attached to the upper reinforcing beam 4. The upper common support member 21 has an L-shaped cross section, and an end side of a horizontal portion thereof is attached to the upper reinforcing beam 4. An upper support point 36 is arranged inside the vertical portion of the upper common support member 21, and a lower support point 9 is arranged below the tank side surface 3. Upper support point 36
A sound insulating plate 7 is attached between the lower support point 9 and the lower support point 9 so as to cover the outer surface of the tank side surface 3.

As shown in FIG. 2, three sound insulation plates 7 are mounted on one side of the tank side surface 3.
The upper support points 36 of the respective sound insulating plates 7 are all arranged inside the L-shaped upper common support member 21. Also,
The sound insulating plate 7 has the same configuration as that of the related art shown in FIG. The elastic elements 25 and 26 move in the vibration direction of the support points 36 and 9, that is, in the horizontal direction of the tank side surface 3 (x in FIG. 1).
Direction) and a spring elastically deformed in the vertical direction (z direction in FIG. 1), and is made of, for example, rubber or metal. Further, the sealing materials 27 and 28 are formed of a material having a property of sealing the gaps 22 and 23 and deforming flexibly in accordance with the relative displacement between them, for example, a rubber tube.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is, in the present embodiment, both of the three sound insulating plates 7
Since the upper support points 36 are arranged on the upper common support member 21, there is no need to provide a member for the upper support points 36 for each sound insulating plate 7. Therefore, the upper support point 36 can be arranged at an arbitrary position on the upper common support member 21, and the number of parts can be reduced.

Even if the mounting positions of the three sound insulating plates 7 are shifted in the height direction due to an assembly error, the interval between the gaps 22 between the sound insulating plate main body 14 and the upper common support member 21 is kept constant. Therefore, the attachment of the sealing material 27 is facilitated, and the number of manufacturing steps can be reduced.

(2) Second Embodiment (Configuration) One embodiment corresponding to the second aspect of the present invention will be described below with reference to FIGS. In addition,
FIG. 3 is a perspective side view of the stationary induction device of the present embodiment, and FIG. 4 is a front view. That is, as shown in FIGS. 3 and 4, the lower end of the sound insulating plate main body 14 is disposed near the foundation 6, and the gap 33 between the lower end of the sound insulating plate main body 14 and the base 6
A second sealing material 38 is disposed. Other configurations are the same as those in the first embodiment.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is, since the gap 33 between the sound insulating plate main body 14 and the foundation 6 is closed by the sealing material 38, when the mounting positions of the three sound insulating plates 7 are different, the gaps between the gaps 33 may be different. Since the position of the foundation does not always change, the sealing material 3
8 can be easily mounted, and the number of manufacturing steps can be reduced.

(3) Third Embodiment (Configuration) One embodiment corresponding to the third aspect of the present invention will be described below with reference to FIGS. In addition,
FIG. 5 is a perspective side view of the stationary induction device according to the present embodiment, and FIG.
Is a front view. That is, as shown in FIG. 5, the lower support point 39 of the sound insulating plate 7 is provided on the beam-like lower common support member 31 attached to the tank side surface 3. As shown in FIG. 6, three sound insulating plates 7 are attached to the tank side surface 3, and the lower support points 39 of each of the sound insulating plates 7 are all disposed inside the lower common supporting member 31. I have. Other configurations are the same as those of the above-described second embodiment.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, since the lower support point 39 is disposed on the lower common support member 31 in each of the three sound insulation plates 7, it is not necessary to provide a member for the support point for each sound insulation plate 7, and the number of parts can be reduced. it can.

Further, even when a flange, a pipe, or the like is arranged on the tank side surface 3, the lower support point 39 is arranged at an arbitrary position on the lower common support member 31 regardless of these. Therefore, the number of manufacturing steps can be reduced.

(4) Fourth Embodiment (Configuration) One embodiment corresponding to the tenth aspect of the present invention will be described below with reference to FIG. FIG. 7 is a front view of the stationary induction device according to the present embodiment. That is, in the present embodiment, the adjacent sound insulating plate bodies 14 are connected to the three sound insulating plates 7 attached to the tank side surface 3 by the connecting member 3.
5 are connected. The other configuration is the same as that of the third embodiment.

(Operation and Effect) The operation and effect of this embodiment having the above configuration will be described below. That is, the natural frequency of one sound insulation plate is close to the dominant frequency region of the earthquake,
Even if there is a possibility that excessive vibration may be caused by an earthquake input, the adjacent sound insulating plates 14 are connected by the connecting member 35, so that the sound insulating plates 7 support each other, and the response to the earthquake is suppressed. Can be reduced. Therefore, it is possible to improve the seismic performance while maintaining the vibration insulation performance.

(5) Fifth Embodiment (Configuration) One embodiment corresponding to the invention described in claim 11 will be described below with reference to FIG. FIG. 8 is a plan view of the stationary induction device according to the present embodiment. That is, in the present embodiment, the sound insulating plate body 14 and the sound insulating plate body 37 that are orthogonal to each other at the tank corner are connected by the connecting member 44. The other configuration is the same as that of the fourth embodiment.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is,
In addition to the adjacent sound-insulating plate bodies 14, the sound-insulating plate bodies 14 and 37, which are perpendicular to each other at the corners, are also connected.
The seismic performance is further improved.

(6) Sixth Embodiment (Configuration) An embodiment corresponding to the invention described in claim 6 is
This will be described below with reference to FIG. FIG. 9 is a transparent side view of the stationary induction device of the present embodiment. That is, on the foundation 6, the tank 2 which accommodates the stationary induction machine main body 1 therein and is filled with insulating oil or gas is installed.
On the tank side 3, upper reinforcing beam 4
And a lower reinforcing beam 5 are attached. An upper support point 8 is disposed on the upper reinforcing beam 4, and a lower support point 9 is disposed below the tank side surface 3. Between the upper support point 8 and the lower support point 9, a sound insulating plate 7 is attached so as to cover the outer surface of the tank side surface 3. Further, in the space between the sound insulating plate 7 and the tank side surface 3, a sound absorbing material 41 formed into a block-like mass is arranged. The configuration of the sound insulating plate 7 is the same as that of the first embodiment.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is, in the present embodiment, the block-shaped sound absorbing material 41 is disposed in the space between the sound insulating plate 7 and the tank side surface 3.
For this reason, the standing wave 20 in the height direction generated in the space described above.
On the other hand, many sound absorbing materials 41 are arranged in a portion where the particle speed of air is high, so that the sound absorbing effect can be enhanced. Therefore, the noise level in the space between the sound insulating plate 7 and the tank side surface 3 can be suppressed to a low level, and the gaps 42 and 43 between the support points 8 and 9 and the sound insulating plate main body 14 remain open without being closed. As a result, it is possible to obtain sufficient sound insulation performance while maintaining the safety of maintenance work.

(7) Seventh Embodiment (Configuration) One embodiment corresponding to the seventh aspect of the present invention will be described below with reference to FIG. Note that FIG.
FIG. 2 is a side view of the stationary induction device of the present embodiment. That is, in the present embodiment, the space between the tank side surface 3 and the sound insulating plate 7 is divided by the partition 45, and the sound absorbing material 46 formed into a block-like mass is disposed in each of the divided spaces. I have. Other configurations are the same as those in the sixth embodiment.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is, by dividing the space between the tank side surface 3 and the sound insulating plate 7 by the partition 45, the generation of the standing wave 20 can be prevented. Therefore, the noise level in the space between the sound insulating plate 7 and the tank side surface 3 can be suppressed lower than in the sixth embodiment, and sufficient sound insulating performance can be obtained even when the gap between the sound insulating plates 7 is left open. It becomes possible.

(8) Eighth Embodiment (Structure) One embodiment corresponding to the invention described in claim 8 will be described below with reference to FIG. Note that FIG.
FIG. 2 is a perspective side view of the stationary induction device of the present embodiment. That is, in the present embodiment, the sound absorbing material 48 is disposed inside the gap 42 generated between the sound insulating plate main body 14 and the tank side surface 3 by disposing the first elastic element 15, and the second elastic A sound absorbing material 49 is arranged inside a gap 43 created between the sound insulating plate main body 14 and the tank side surface 3 by disposing the element 16. Other configurations are the same as those described in the sixth above.
This is the same as the embodiment.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is, the sound leakage from the gaps 42 and 43 is
Therefore, the sound insulation performance can be further improved.

(9) Ninth Embodiment (Structure) An embodiment corresponding to the invention described in claim 4 will be described below with reference to FIG. FIG.
FIG. 2 is a perspective side view of the stationary induction device of the present embodiment. That is, in the present embodiment, the gap 22 created by disposing the first elastic element 25 and the gap 33 created by providing the second elastic element 26 are not closed, A sound absorbing material 51 formed into a block lump is disposed in a space between the tank and the tank side surface 3. Other configurations are the same as those in the third embodiment.

(Operation and Effect) The operation and effect of this embodiment having the above configuration are as follows. That is, in the present embodiment, the sound insulating plate 7 and the tank side surface 3
A block-shaped sound absorbing material 51 is arranged in the space between the two. For this reason, the sound absorbing material 5 is provided at a portion where the particle velocity of air is high with respect to the standing wave 20 in the height direction generated in the space.
1 are arranged more, and the sound absorbing effect can be enhanced. Therefore, the noise level in the space between the sound insulating plate 7 and the tank side surface 3 can be suppressed low, and the gaps 22 and 3 can be reduced.
It is possible to obtain sufficient sound insulation performance while maintaining the safety of the maintenance work by keeping the opening 3 open without closing.

(10) Tenth Embodiment (Structure) One embodiment corresponding to the invention described in claim 5 will be described below with reference to FIG. Note that FIG.
1 is a perspective side view of a stationary induction device according to the present embodiment.
That is, in the present embodiment, the space between the tank side surface 3 and the sound insulating plate 7 is divided by the partition 55, and the sound absorbing material 56 formed into a block-like mass is disposed in each of the divided spaces. is there. Other configurations are the same as those in the ninth embodiment.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, in the present embodiment, generation of the standing wave 20 can be prevented by dividing the space between the tank side surface 3 and the sound insulating plate 7 by the partition 55. Therefore, the noise level in the space between the sound insulating plate 7 and the tank side surface 3 can be further reduced, and sufficient sound insulating performance can be obtained even when the gaps 22 and 33 are left open.

(11) Eleventh Embodiment (Configuration) Another embodiment corresponding to the eighth aspect of the present invention will be described below with reference to FIG. FIG. 14 is a side view of the stationary induction device of the present embodiment. That is, in the present embodiment, the sound absorbing material 58 is arranged inside the gap 22 generated by disposing the first elastic element 25,
Gap 33 created by providing second elastic element 26
The sound absorbing material 59 is arranged inside the inside. Other configurations are the same as those in the ninth embodiment.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, according to the present embodiment, sound leakage from the gaps 22 and 33 is reduced by the sound absorbing material 5.
8, 59 can be reduced. Therefore, the sound insulation performance can be further improved.

(12) Other Embodiments The present invention is not limited to the above embodiments, and the number, material, shape, etc. of each member can be changed as appropriate. For example, the number of sound insulation plates 7 in the above-described embodiment is not necessarily limited to three, and can be arbitrarily changed according to the size of the tank side surface 3. As long as the properties described in the above embodiments are satisfied, the materials and shapes of the sealing materials 27 and 28 are arbitrary. It may be a filler or the like that is directly embedded in the substrate.

Furthermore, if the lower common support member 31 in the above embodiment is a beam-shaped member attached along the tank side surface 3, its cross-sectional shape and the method of joining with the tank side surface 3 can be arbitrarily changed. It is.

[0053]

As described above, according to the present invention,
It is possible to provide a static induction device having high vibration insulation performance and noise reduction performance, a small number of manufacturing steps, and high seismic performance.

[Brief description of the drawings]

FIG. 1 is a perspective side view showing a first embodiment of a stationary induction device according to the present invention.

FIG. 2 is a front view of the embodiment of FIG.

FIG. 3 is a perspective side view showing a second embodiment of the stationary induction device of the present invention.

FIG. 4 is a front view in the embodiment of FIG. 3;

FIG. 5 is a perspective side view showing a third embodiment of the stationary induction device of the present invention.

FIG. 6 is a front view of the embodiment of FIG.

FIG. 7 is a front view showing a fourth embodiment of the stationary induction device of the present invention.

FIG. 8 is a plan view showing a fifth embodiment of the stationary induction device of the present invention.

FIG. 9 is a perspective side view showing a sixth embodiment of the stationary induction device of the present invention.

FIG. 10 is a perspective side view showing a seventh embodiment of the stationary induction device of the present invention.

FIG. 11 is a perspective side view showing an eighth embodiment of the stationary induction device of the present invention.

FIG. 12 is a perspective side view showing a ninth embodiment of the stationary induction device of the present invention.

FIG. 13 is a transparent side view showing a tenth embodiment of the stationary induction device of the present invention.

FIG. 14 is a perspective side view showing an eleventh embodiment of the stationary induction device of the present invention.

FIG. 15 is a side view showing an example of a conventional stationary induction device.

FIG. 16 is a front view showing an example of a sound insulation plate main body used for a conventional stationary induction device.

FIG. 17 is a front view showing another example of the conventional stationary induction device.

FIG. 18 is a perspective side view showing another example of the conventional stationary induction device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Stationary induction electric machine 2 ... Tank 3 ... Tank side face 4 ... Upper reinforcement beam 5 ... Lower reinforcement beam 6 ... Foundation 7 ... Sound insulation plate 8, 36 ... Upper support point 9, 39 ... Lower support point 11 ... Flat plate 12, 13 ... Reinforcing rib 14 ... Sound insulation plate body 15, 16, 25, 26 ... Elastic element 17,18,27,28,38 ... Seal material 19 ... Sound absorbing material 20 ... Standing wave 21 ... Upper common support member 22,23,33 , 42, 43 ... gap 31 ... lower common support member 35, 44 ... connecting member 37 ... sound insulation plate body 41, 46, 48, 49, 51, 56, 58, 59 ... sound absorbing material 45, 55 ... partition

Continuing from the front page (72) Inventor Shoichi Takeo 2-1 Ukishima-cho, Kawasaki-ku, Kawasaki-city, Kanagawa Prefecture Inside the Toshiba Hamakawasaki Plant (72) Inventor Seiji Iwasaki 2-1 Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture F-term in Toshiba Hamakawasaki Plant (reference) 5D061 CC15 DD07 GG06 5E058 AA08 AA15

Claims (11)

[Claims] 1. An upper support point and a lower support point are attached to the upper and lower sides of a tank containing a stationary induction body,
A plurality of sound insulation plates are attached at positions covering the tank side outer surface between the upper support point and the lower support point, and elastic elements are provided between the sound insulation plate and the upper support point and the lower support point, respectively. A stationary common induction device, wherein one side of a horizontal surface is attached to a side of the tank, and the other side opposite to the side has an upper common support member bent downward and in a direction parallel to the side of the tank. Is provided inside the upper common support member. 2. A lower end of the sound insulating plate is arranged near a foundation on which the tank is installed, and a seal material is provided in a gap between the lower end of the sound insulating plate and the foundation. The static induction device according to claim 1. 3. One end of a beam-shaped lower common support member is attached to the side surface of the tank, and the other end of the lower common support member is provided with lower support points for the plurality of sound insulation plates. Claim 2
The static induction device as described. 4. The stationary induction electric device according to claim 1, wherein a sound absorbing material is disposed in a space between the side surface of the tank and the sound insulating plate. 5. The stationary apparatus according to claim 4, wherein a space between the tank side surface and the sound insulating plate is divided by a partition, and the sound absorbing material is arranged in each of the divided spaces. Induction machine. 6. An upper support point and a lower support point are attached to the upper and lower sides of the tank containing the stationary induction body,
A plurality of sound insulation plates are attached at positions covering the tank side outer surface between the upper support point and the lower support point, and elastic elements are provided between the sound insulation plate and the upper support point and the lower support point, respectively. The stationary induction electric appliance, wherein a sound absorbing material is disposed in a space between the tank side surface and the sound insulating plate. 7. The space according to claim 6, wherein a space between the tank side surface and the sound insulating plate is divided by a partition, and the sound absorbing material is arranged for each of the divided spaces. Stationary induction appliance. 8. The sound absorbing material according to claim 1, wherein a sound absorbing material is arranged inside a gap between the tank side surface and the sound insulating plate in the vicinity of the elastic element. Static induction device. 9. The stationary device according to claim 1, wherein a sealing material is disposed in a gap between the tank side surface and the sound insulating plate in the vicinity of the elastic element. Induction machine. 10. The stationary induction device according to claim 1, wherein the adjacent sound insulation plates are connected to each other. 11. The stationary induction device according to claim 10, wherein the sound insulation plates orthogonal to each other at a corner of the tank are connected to each other.