JPH1116750A - Stationary induction electric apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable stationary induction electric apparatus which can be assembled easily and is improved in sound shielding. SOLUTION: A core 1 and a winding 2 are housed in a tank 3 filled up with an insulating medium and upper and lower supports 4 and 6 are respectively attached to the upper and lower sections of the side face of the tank 3. The bent surface of the end section of the upper support 4 on the opposite side of the end of the support 4 fixed to the tank 3 is fixed to the surface side of a sound shielding plate 7 with bolts in a state where the bent surface covers the upper end of the plate 7 and an upper vibration-proof member 5a is held between the bent surface and the plate 7. The bent surface of the end section of the lower support 6 on the opposite side of the end of the support 6 fixed to the tank 3 is fixed to the rear surface side of the plate 7 with bolts in a state where a lower vibration-proof member 5b is held between the bent surface and plate 7. At the time of fixing the support 6 to the plate 7, set screws attached to the hardware section of the member 5b are passed through the through-holes of the plate 7 and engaged with nuts 10 on the outside of the plate 7.

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 such as a transformer and a reactor, and more particularly to a stationary induction device having a sound insulating plate mounted around a tank containing a stationary induction device main body.

[0002]

2. Description of the Related Art In recent years, the noise generated by stationary induction devices such as transformers and reactors has been increasing as their sizes have increased, but on the other hand, noise regulations have become stricter from the viewpoint of environmental protection. ing. Against the background of social demands for such noise regulations, it is strongly desired to reduce noise of stationary induction devices.

[0003] The noise of the stationary induction device is generated because the vibration of the stationary induction device main body propagates to the tank, the side surface of the tank vibrates, and the sound is radiated to the surroundings. As a means of preventing the diffusion of radiated sound, there is a method of storing a stationary induction device in a soundproof building made of steel plate, etc.However, it has disadvantages such as an increase in installation area, so sound insulation around the tank as an alternative structure A method of attaching a board is widely used. In such a sound insulating plate, the sound insulating plate itself vibrates due to the vibration of the tank,
Consideration has been given to the configuration so as not to be a noise source.

FIG. 2 shows a conventional example of such a stationary induction device.
2 and FIG. 23 will be specifically described.

In the conventional stationary induction device shown in FIG. 22, a stationary induction device main body constituted by an iron core 1 and a winding 2 is housed in a tank 3. An insulating medium is sealed in the tank 3 for insulation and cooling. Generally, an insulating oil or an insulating gas is used for the insulating medium. A plurality of supports 3a are provided on the outer surface of the tank 3 so as to protrude in the horizontal direction. On the other hand, a sound insulating plate 7 formed of an iron plate, a damping steel plate, or the like is provided with a horizontal pressing plate 7a corresponding to the support 3a. And
Anti-vibration member 5 made of an elastic material such as anti-vibration spring or anti-vibration rubber
In a state where the sound insulation plate 7 is sandwiched between the support 3a and the support 3a, the sound insulation plate 7 is supported in a direction parallel to the side surface of the tank 3 by being fastened and fixed by bolts inserted vertically. I have. Although not shown, a sound absorbing material such as glass wool or rock wool is often provided on the side surface of the sound insulating plate 7 on the tank 3 side. Further, such a stationary induction device is installed on a foundation base 21, and a gap 24 is provided between the foundation base 21 and a lower portion of the sound insulating plate 7.

According to the above stationary induction device, noise can be isolated by the sound insulating plate 7. That is, the sound radiated from the side surface of the tank 3 is attenuated by the transmission loss of the iron plate or the damping steel plate constituting the sound insulating plate 7. Also, the sound insulation plate 7
When a sound absorbing material is attached inside the space, the sound absorbing material can reduce a rise in sound pressure in a space between the tank 3 and the sound absorbing material. Further, by supporting the sound insulating plate 7 with respect to the tank 3 via the vibration insulating member 5, the vibration of the tank 3 is absorbed by the vibration insulating member 5 and transmission of the vibration to the sound insulating plate 7 is minimized. It is possible to reduce the ratio of sound emitted as a secondary sound source by vibration. Further, a separate base for the sound insulating plate 7 is not required.

Further, as shown in JP-A-8-124765, a tank reinforcing member provided on a side surface of a tank is provided with an end portion bent at a right angle of an outer soundproofing plate so that the tank is soundproofed. There has also been proposed a stationary induction device having a structure in which a plate can be integrally moved.

On the other hand, in the conventional stationary induction device shown in FIG. 23, a plurality of substantially L-shaped supports 3a each composed of a horizontal portion and a vertical portion are provided on the outer surface of the tank 3. Then, in a state where the vibration isolating member 5 is sandwiched, the sound insulating plate 7 is overlapped on the vertical portion of the support 3a, and is fastened and fixed by bolts inserted in the horizontal direction. Further, a gap generated between the support 3 a and the sound insulating plate 7 is closed by the sealant 20. In the drawing, reference numeral 3b denotes a pulling ear, and 3c denotes a hanging ear, which is used at the time of moving and transporting the stationary induction device regardless of inside or outside the factory.

[0009]

By the way, the above-mentioned conventional sound insulating plate has the following problems.
A first problem is that when installed outdoors, deterioration of components due to intrusion of rainwater or irradiation of ultraviolet rays is inevitable. First, when installed outdoors, tank 3
It is inevitable that rainwater enters between the sound insulation plate 7 and the ultraviolet rays and the like. In general, when moisture invades or is irradiated with ultraviolet rays, the vibration-proofing member 5 made of an elastic material such as a vibration-proof rubber rapidly deteriorates. Thus, the vibration isolating member 5
Deteriorates, the original function of the vibration isolating member 5 of minimizing the transmission of vibration is lost, vibration isolation between the support 3a of the tank 3 and the sound insulating plate 7 is not performed, and the sound insulating plate 7
Will vibrate to the same extent as the side wall of the tank 3.

As a result, the sound insulation plate 7 generates noise due to the vibration of the flat film as in the case of the speaker, leading to an increase in noise. Further, if moisture remains between the sound insulating plate 7 and the tank 3, it is expected that rust will be generated on the metal member, which is not preferable in terms of maintaining the quality of metal parts in each structure and durability. .

Further, in the conventional example shown in FIG. 23, a gap formed between the support 3a and the sound insulating plate 7 is closed by a sealing material 20. Since it is necessary to flexibly deform according to the conditions, it is considered that bonding of lead formed into a foil shape, insertion of rubber packing, a filler directly used in a gap, and the like are suitable as a sealing material. However, when installed outdoors, the sealant 20 is directly exposed to rainwater and ultraviolet rays, but has lower durability than steel, and has problems in terms of weather resistance and service life.

In order to cope with the above problems, it is conceivable to separately attach a rain cover to the upper part of the tank 3 and the sound insulating plate 7. In such a case, it is necessary to attach a rain cover to the side wall of the tank 3. A dedicated area must be secured, leading to an increase in the size of the device. In addition, since the man-hours for manufacturing and attaching the rain protection cover are added, the manufacturing and assembling efficiency is reduced and the cost is significantly increased.

A second problem is that sound leaks from a gap between the lower end of the sound insulating plate and the foundation, and the sound insulating performance is reduced. The reason will be described below with reference to FIG.
In general, the main components of the base 21 on which the stationary induction device is installed are concrete 22 and a base metal 23 which is arranged several mm higher than the concrete 22. The load of a heavy object such as a stationary induction electric device is supported by the base hardware 23 disposed in the concrete 22. In addition to the stationary induction electric appliance, a separate cooling device, a soundproof tank, and the like require a base metal supporting the load. It is required separately from the base hardware for stationary induction equipment.

Here, the base metal 23 can be expected to have both flatness and levelness to support the load.
In the case of No. 2, neither flatness nor horizontality can be expected so much. For this reason, it is impossible to predict the vertical difference between the concrete 22 and the base hardware 23 in advance, and there is also a tolerance in the sound insulation plate mounting operation itself.
As shown in (1), when designing a stationary induction device, a gap 24 must be provided below the sound insulating plate 7.

A third problem is that since the sound insulating plate is supported from the tank via the elastic material, it is necessary to remove the sound insulating plate and reassemble the sound insulating plate on site during transportation. The reason will be described below with reference to FIG.
In general, the stationary induction device is moved by lifting using the hanging ears 3c, pulling the rollers using the pulling ears 3b, or the like. As is clear from FIG. 23, the conventional stationary induction device cannot use the pulling ear 3b or the hanging ear 3c with the sound insulating plate 7 attached. On the other hand, when these pulling ears or hanging ears are attached to the sound insulating plate, an extremely large load is generated on the vibration isolating member 5, which may cause damage to the vibration isolating member 5. On the other hand, it is conceivable to increase the rigidity or increase the number of the vibration isolating members 5, but in that case,
This is not practical because it not only increases the material cost and the number of man-hours, but also impairs the effect of the vibration isolating support that supports the sound insulating plate 7 via the vibration isolating member 5 and lowers the sound insulating performance.

Further, an unexpected load may be applied to the sound insulating plate 7 due to acceleration generated during transportation. Such a load causes deterioration of the vibration isolating member 5 and lowers the sound insulating performance of the sound insulating plate 7.

Further, in the conventional example shown in FIG.
There is also a problem that the assembling work of the sound insulating plate 7 is difficult.
That is, in the stationary induction device shown in FIG. 22, the sound insulating plate 7 is assembled by bolting the support 3a on the tank 3 side and the sound insulating plate 7 via the vibration isolating member 5 as described above. However, since the contact point between the support 3a and the holding plate 7a is located in the space between the side wall of the tank 3 and the sound insulating plate 7, the assembly operation must be performed in a very narrow space. Hateful. If the work space is enlarged to cope with this, the space between the tank 3 and the sound insulating plate 7 is widened, and the installation area of the equipment is increased,
The extension of the support 3a and the holding plate 7a also leads to an increase in equipment cost.

The present invention has been proposed to solve the above-mentioned problems of the prior art, and a main object of the present invention is to improve the assemblability and sound insulation performance and to provide a highly reliable stationary induction electric appliance. It is to provide. Another object of the present invention is to provide a highly reliable stationary induction electric appliance which can be moved with a sound insulating plate attached, while improving assemblability and sound insulating performance.

A more specific object of the present invention is to improve the reliability of a stationary induction device by preventing deterioration of components due to intrusion of moisture and irradiation of ultraviolet rays. It is another object of the present invention to further improve the assemblability at the time of mounting the sound insulating plate, and to prevent sound leakage from a gap to improve the sound insulating performance. It is another object of the present invention to make it possible to move the stationary induction device while attaching the sound insulation plate without damaging the sound insulation performance due to contact with a wire or the like.

[0020]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a stationary induction device body housed in a tank together with an insulating medium, and a sound insulating plate covering the side surface of the tank is provided with a vibration isolating member. The static induction device mounted via the above has the following technical features.

According to the first aspect of the present invention, the sound insulating plate is supported by the support member attached to the side surface of the tank via the vibration isolating member, and the support member is attached to the upper portion of the side surface of the tank. An upper support member is included, and one of the upper support member and the sound insulating plate is arranged so as to cover an upper part of the other. According to this configuration, the upper support member or the sound insulating plate that supports the sound insulating plate functions as a rain shield and a sunshade cover, so that intrusion of moisture, irradiation of ultraviolet rays, and the like between the tank and the sound insulating plate is blocked,
Deterioration of the upper vibration isolating member due to external factors is prevented, and long-term reliability of the vibration isolating structure can be ensured. Further, since it is not necessary to separately install a rain cover or the like, the structure can be simplified. Further, since the sound insulating plate can be attached to the upper support member from outside the sound insulating plate, the assembling property is excellent.

According to a second aspect of the present invention, in the stationary induction device according to the first aspect, the tank is installed on a base base, and a lower end of the sound insulating plate and the base base are provided between the base and the base.
A bottom vibration isolator is provided. According to this configuration, sound leakage from the gap between the lower end of the sound insulating plate and the base is reduced by the bottom vibration isolating member, so that the sound insulating performance of the entire sound insulating plate can be improved.

According to a third aspect of the present invention, in the stationary induction device according to the first or second aspect, the structure for supporting and fixing the sound insulating plate has the following features. First, the sound insulating plate is supported via a lower vibration isolating member by a lower supporting member attached to a lower side of the tank.
Then, a bolt member is attached to a part of the lower vibration isolating member so that the sound insulating plate is positioned with respect to the lower support member and can be tightened and fixed by a nut member from the outside of the sound insulating plate. And a through hole for the bolt member is formed on the sound insulating plate side. According to this configuration, after the sound insulating plate is positioned with respect to the lower support member, the sound insulating plate can be fixed by tightening the bolt member from the outside through the nut member from the outside. Man-hours for assembling sound insulation plates at factories and sites can be significantly reduced.

According to a fourth aspect of the present invention, in the stationary induction device according to the first aspect, the sound insulating plate is suspended and supported by the upper supporting member via the vibration isolating member. According to this configuration, since the sound insulating plate is suspended and supported by the upper support member, the vibration frequency of the sound insulating plate when the vibration is transmitted to the sound insulating plate is lower than that in the case where the entire periphery of the sound insulating plate is supported. And it is difficult for humans to recognize it as sound. Further, since the transmission path of the vibration from the tank is reduced, the vibration of the sound insulating plate itself can be suppressed.

According to a fifth aspect of the present invention, there is provided the stationary induction device according to any one of the first to fourth aspects, wherein the sound insulating plate is provided with unevenness. According to this configuration, the unevenness of the sound insulating plate promotes irregular reflection of sound between the sound insulating plate and the tank wall, and suppresses standing waves, thereby improving sound insulating performance.

According to a sixth aspect of the present invention, in the stationary induction device according to any one of the first to fifth aspects, the vibration isolating member is pressed and joined between the upper support member and the sound insulating plate surface. It is characterized by including a first vibration isolating member, and a second vibration isolating member supported by vertical pressing force between plate members provided on the upper support member and the sound insulating plate, respectively. According to this configuration, the second upper vibration isolating member can reliably prevent sound leakage from the gap between the upper support member and the sound insulating plate, and enhance the sound insulating performance of the entire sound insulating plate.

[0027] According to a seventh aspect of the present invention, in the stationary induction device according to any one of the first to sixth aspects, at least one of disposing a damping sheet and applying a damping paint on the surface of the sound insulating plate. Is provided.
According to this configuration, the vibration of the sound insulating plate itself is suppressed by the damping sheet and the damping paint, so that the amount of noise generated due to the vibration of the sound insulating plate is significantly reduced.

According to an eighth aspect of the present invention, in the stationary induction device according to any one of the first to seventh aspects, a sound absorbing material is provided on a surface of the sound insulating plate on the tank side. Features. According to this configuration, the sound absorbing material suppresses a rise in sound pressure between the tank wall and the sound insulating plate, so that the noise reduction performance of the entire sound insulating plate can be improved.

According to a ninth aspect of the present invention, in the stationary induction device according to any one of the first to eighth aspects, the upper support member is attached to a channel-shaped reinforcing member attached to a side surface of the tank. It is characterized by having been done. According to this configuration, since the portions where the upper and lower support members are attached are the channel-shaped reinforcing members, no attachment seat is required, and the space for installing the sound insulating plate in the device can be reduced.

According to a tenth aspect of the present invention, in the stationary induction device according to any one of the first to ninth aspects, a screen standing upright above the sound insulating plate is attached to the upper support member. It is characterized by having. According to this configuration, the screen reduces the sound sneaking from the upper part of the tank, which is the area where the sound insulating plate is not attached, so that the sound insulating performance of the entire sound insulating plate can be improved.

According to an eleventh aspect of the present invention, in the stationary induction device according to the tenth aspect, a member having a circular cross section is attached to an upper end of the partition. According to this configuration, since the sound is prevented from being diffracted by the member having a circular cross section at the end of the screen, the sound insulation performance of the entire sound insulation plate can be further improved by preventing the sound from flowing from above the tank.

According to a twelfth aspect of the present invention, there is provided the stationary induction device according to any one of the first to ninth aspects, wherein the upper part covers a portion where the sound insulation plate is not installed from a side surface to an upper surface of the upper part of the tank. A cover is provided. According to this configuration, since the upper cover reduces sound wraparound and radiation from the tank side surface, which is an area where the sound insulation plate is not attached, to the upper surface, the sound insulation performance of the entire sound insulation plate can be further improved. .

According to a thirteenth aspect of the present invention, in the stationary induction device according to the first aspect, a sound insulation plate side cover having a shape covering an upper portion of the upper support member is provided at an upper end of the sound insulation plate, and the tank is provided with a cover. A tank-side cover having a shape that holds a gap with the sound-insulating plate-side cover and covers an upper portion thereof is provided.

According to this configuration, the tank-side cover blocks the intrusion of moisture between the tank and the sound insulating plate, the irradiation of ultraviolet rays, and the like. Long-term reliability of the structure can be ensured. Therefore, even if the gap between the covers is filled with a flexible sealing material,
Weather resistance and service life do not matter. Therefore, sound leakage from the gap can be prevented by filling such a flexible sealing material. Further, since it is not necessary to separately install a rain cover or the like, the structure can be simplified. further,
The sound insulation plate can be easily attached to the support member by lifting the sound insulation plate, and the tolerance in mounting the sound insulation plate can be absorbed by the gap between the covers, so that the assemblability is excellent.

According to a fourteenth aspect of the present invention, in the stationary induction device according to the thirteenth aspect, the tank-side cover is configured to be disassembled. According to this configuration, since the sound insulating plate can be mounted with at least a part of the tank-side cover removed, the mounting operation of the sound insulating plate is further simplified.

According to a fifteenth aspect of the present invention, in the stationary induction device according to the first aspect, an abutment plate for closing a lower space formed between the tank and the sound insulation plate is disposed at a lower end of the sound insulation plate. It is characterized by having. According to this configuration, since the gap under the sound insulating plate can be closed by the hitting plate, sound leakage from this portion is reduced, and the sound insulating performance of the entire sound insulating plate can be improved.

According to a sixteenth aspect of the present invention, in the stationary induction device according to the first aspect, a handhole is arranged near the front surface of the ear of the tank in the sound insulating plate. According to this configuration, the wire can be easily attached to the pull ear using the handhole. In this case, since the wire does not directly contact the sound insulating plate, even when the sound insulating plate is attached, the static induction device can be favorably moved without applying an extra load to the sound insulating plate or the vibration isolating member. .

According to a seventeenth aspect of the present invention, in the stationary induction device according to the first aspect, a handhole for lifting is arranged. First, a lifting wire is attached to at least one of the sound insulation plate body, a member arranged from the upper end of the sound insulation plate toward the tank, and a member arranged from the tank side surface toward the upper end of the sound insulation plate. A handhole (upper handhole) for passing through is arranged. And a handhole (lower handhole) is arranged near the front of the suspension ear of the tank on the sound insulating plate.

According to this configuration, the hanging wire can be easily attached to the hanging ear while the hanging wire is passed through the upper hand hole and confirmed by the lower hand hole. In this case, since the wire does not come into direct contact with the sound insulating plate, the stationary induction device should be lifted and moved well without applying extra load to the sound insulating plate or the vibration isolating member even when the sound insulating plate is attached. Can be.

According to an eighteenth aspect of the present invention, in the stationary induction device according to the first aspect, the tank and the sound insulating plate or the support member and the sound insulating plate can be directly fixed by using a fixing jig. It is characterized by comprising.
According to this configuration, since the sound insulating plate can be firmly connected to the tank or the supporting member using the fixing jig, even if an extra load is applied to the sound insulating plate, the load is not applied to the vibration isolating member. Excess load can be supported by a tank or a support member via a fixing jig. Therefore, the stationary induction device can be favorably moved with the sound insulation plate attached.

[0041]

Embodiments of the present invention will be described below with reference to the drawings. The same parts as those in the conventional example shown in FIGS. 22 and 23 are denoted by the same reference numerals and described.

(1) First Embodiment One embodiment corresponding to the first and third aspects of the present invention will be described below as a first embodiment with reference to FIGS. 1 and 2. FIG. 1 is a schematic vertical sectional view of the stationary induction device according to the present embodiment, and FIG. 2 is a vertical sectional view of a lower support portion.

(Configuration) First, the configuration of the present embodiment will be described. That is, an iron core 1 and a winding 2 are accommodated in a tank 3 filled with an insulating medium, and an upper support (upper support member) 4 and a lower support (lower support member) 6 are provided on upper and lower sides of the tank 3, respectively. Is attached by welding or bolt fixing. The upper support 4 is a member having a substantially Z-shaped cross section (a substantially L-shaped shape in which both ends are reversed).
The downward bent surface at the end opposite to the fixed end covers the upper end of the sound insulating plate 7,
The upper anti-vibration member 5a is clamped and fixed by bolts while being sandwiched. In the actual assembling process, the upper support 4 and the sound insulating plate 7 are previously connected to the upper vibration isolating member 5.
a, and the upper support 4 is attached to the tank 3.

The lower support 6 is a member having a substantially L-shaped cross section. The upwardly bent surface at the end opposite to the fixed end to the tank 3 is provided on the back side of the sound insulating plate 7 as a lower vibration isolator. Member 5
b is clamped and fixed by bolts in a state where it is sandwiched. This assembly is performed, as shown in FIG.
The sound insulating plate 7 is positioned so that the mounting screw 9 (bolt-shaped member) attached to the metal part b is inserted into the through hole 8 formed on the sound insulating plate 7 side. This is done by tightening and fixing the mounting nut 10.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, since the upper portion between the tank 3 and the sound insulating plate 7 is completely covered by the upper support 4, it functions as a rain shield and a sunshade cover, and prevents external deterioration factors such as intrusion of moisture and irradiation of ultraviolet rays. Can be shut off. Therefore, deterioration of the upper vibration isolating member 5a and the lower vibration isolating member 5b is prevented, long-term reliability of the vibration isolating structure can be secured, and stable sound insulation performance can be maintained.
And since rainwater does not invade, generation | occurrence | production of the rust of the metal part in the tank 3 and the sound insulation board 7 can be prevented. Also, there is no need to install separate rain and sunshade covers,
The structure is simplified, and the equipment can be reduced in size and cost.

Further, as described above, the mounting of the upper support 4 to the tank 3 and the mounting of the sound insulating plate 7 to the lower support 6 can be performed from the outside of the sound insulating plate 7. There is no need for an assembler to enter the space between them, and the man-hours for assembling the sound insulating plate 7 at the factory and the site can be greatly reduced.

(2) Second Embodiment One embodiment corresponding to the invention described in claim 4 is a second embodiment.
An embodiment will be described below with reference to FIG. FIG. 3 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described. That is, in the present embodiment, the lower support 6 in the first embodiment is not provided, and only the upper side of the sound insulating plate 7 is connected to the upper side via the upper vibration isolating member 5a as in the first embodiment. The sound insulating plate 7 is fixed by the support 4 and the lower side is separated from the installation surface.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, since only one of the four sides around the sound insulating plate 7 is fixed, the vibration frequency when the vibration is transmitted to the sound insulating plate 7 is lower than when the entire periphery of the sound insulating plate 7 is supported. Since the frequency is kept low and is equal to or lower than the human audible range of 20 Hz, it is not recognized as sound.
Also, since the vibration transmission path from the tank 3 is reduced,
The vibration of the sound insulating plate 7 itself can be suppressed. Therefore, the amount of noise generated by the vibration of the sound insulating plate 7 is significantly reduced.

(3) Third Embodiment One embodiment corresponding to the invention described in claim 5 is described as a third embodiment.
An embodiment will be described below with reference to FIG. FIG. 4 is a schematic vertical sectional view of the stationary induction device according to the present embodiment. That is, in the present embodiment, similarly to the second embodiment, the sound insulating plate 7 having only the upper side fixed.
, Is subjected to unevenness processing.

According to the present embodiment having such a configuration,
Diffuse reflection of sound between the sound insulating plate 7 and the wall of the tank 3 is promoted, and standing waves are suppressed. Therefore, the sound insulation effect is further improved as compared with the second embodiment.

(4) Fourth Embodiment One embodiment corresponding to the invention described in claim 2 is described in the fourth embodiment.
An embodiment will be described below with reference to FIG. FIG. 5 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described. That is, in the present embodiment, the upper side of the sound insulating plate 7 is fixed by the upper support 4 via the upper vibration isolating member 5a as in the first embodiment. The bottom vibration isolator 12 is disposed between the base 21 on which the stationary induction device is installed and the lower side of the sound insulating plate 7.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, sound leakage from the gap between the sound insulating plate 7 and the base 21 is reduced by the bottom vibration isolating member 12, and the sound insulating effect of the entire sound insulating plate 7 can be enhanced. Further, it is only necessary to dispose the bottom vibration isolating member 12 below the sound insulating plate 7, and there is no need to perform work such as fixing a bolt to the lower support, so that the number of man-hours for assembling the sound insulating plate at the factory and the site is greatly reduced. Can be reduced.

(5) Fifth Embodiment One embodiment corresponding to the invention described in claim 6 is described as a fifth embodiment.
An embodiment will be described below with reference to FIG. FIG. 6 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described. That is, in the present embodiment, similarly to the first embodiment, the upper support 4 and the sound insulating plate 7 are fixed via the upper vibration isolating member 5a. The upper support 4 and the sound insulating plate 7 are respectively provided with a holding plate 4a and a holding plate 7a.
Are provided in the horizontal direction at intervals in the height direction. A second upper vibration isolator 5c is sandwiched between the holding plate 4a of the upper support 4 and the holding plate 7a of the sound insulating plate 7.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is,
In the present embodiment, an upper vibration isolating member 5a is provided between the upper support 4 and the sound insulating plate 7, and the upper support 4
Since the second upper vibration isolating member 5c is disposed in the gap between the holding plate 4a of the first sound insulating plate 7 and the holding plate 7a of the sound insulating plate 7, sound leakage from between the upper support 4 and the sound insulating plate 7 is reliably prevented. Thus, the sound insulation effect of the entire sound insulation plate 7 can be enhanced.

(6) Sixth Embodiment One embodiment corresponding to the invention described in claim 7 is described in the sixth embodiment.
An embodiment will be described below with reference to FIG. FIG. 7 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described. That is, in the present embodiment, the sound insulating plate 7 is fixed to the upper support 4 and the lower support 6 as in the first embodiment, and the lower side of the sound insulating plate 7 is similar to the fifth embodiment. It is supported by the bottom vibration isolator 12. A damping sheet 13 for suppressing vibration is provided on the inner surface of the sound insulating plate 7.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is,
In the present embodiment, since the vibration of the sound insulating plate 7 itself is suppressed by the damping sheet 13, the amount of noise generated due to the vibration of the sound insulating plate 7 is significantly reduced. Therefore, the sound insulation performance of the entire sound insulation plate 7 can be improved.

(7) Seventh Embodiment One embodiment corresponding to the invention described in claim 8 is described in the seventh embodiment.
An embodiment will be described below with reference to FIG. FIG. 8 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment. That is, in the present embodiment, a sound absorbing material 14 such as glass wool or rock wool is provided on the inner surface of the sound insulating plate 7 attached to the tank 3 as in the sixth embodiment. According to the present embodiment as described above, the sound absorbing material 14 between the wall of the tank 3 and the sound insulating plate 7 suppresses an increase in sound pressure, and can improve the sound insulating performance of the entire sound insulating plate 7.

(8) Eighth Embodiment An eighth embodiment corresponding to the ninth aspect of the present invention will now be described.
An embodiment will be described below with reference to FIG. FIG. 9 is a schematic vertical sectional view of the stationary induction device according to the present embodiment.

(Structure) First, the structure of the present embodiment will be described. That is, in the present embodiment, the channel-shaped reinforcing member 1 having a U-shaped cross section is provided on the upper and lower sides of the tank 3.
5 are provided. And one end side of the upper support 4 is
The other end of the upper support 4 is attached to the sound insulating plate 7 via the upper vibration isolating member 5a as in the first embodiment.
It is attached to the upper channel-shaped reinforcing member 15. The lower part of the sound insulating plate 7 is attached to the lower channel-shaped reinforcing member 15 via the lower vibration insulating member 5b, and the bottom vibration insulating member 12 is disposed between the base 21 and the lower side of the sound insulating plate 7. Has been established.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is,
By providing the channel-shaped reinforcing member 15 on the tank 3 side, a mounting seat for mounting the sound insulating plate 7 and the upper support 4 becomes unnecessary, and the installation space of the sound insulating plate 7 in the device can be reduced. Further, since the reinforcing member 15 is a channel type, the reinforcing member 15 has high strength, and a vibration-proof effect against vibration and durability are improved.

(9) Ninth Embodiment One embodiment corresponding to the tenth aspect of the present invention will be described below as a ninth embodiment with reference to FIG. FIG. 10 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described below. That is, in the present embodiment, the sixth
Similarly to the embodiment, the sound insulating plate 7 is fixed to the upper support 4 and the lower support 6, and the lower side of the sound insulating plate 7 is the bottom vibration isolating member 1.
It is supported by two. A vertical partition 16 projecting above the sound insulating plate 7 is attached to the outer end of the upper support 4.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, the screen 16 reduces the sound sneak from the upper part of the tank 3 where the sound insulating plate 7 is not attached, so that the sound insulating performance of the entire sound insulating plate 7 can be improved.

(10) Tenth Embodiment One embodiment corresponding to the invention described in claim 11 will be described below as a tenth embodiment with reference to FIG. FIG. 11 is a schematic vertical sectional view of the stationary induction device according to the present embodiment. That is, in the present embodiment, at the tip of the partition 16 in the ninth embodiment,
A diffraction prevention member 17 having a circular cross section is attached.
According to the present embodiment as described above, the diffraction prevention member 17
Thereby, sound diffraction is prevented, so that the sound insulation performance of the entire sound insulation plate 7 by preventing sound from sneaking from above the tank 3 can be further enhanced.

(11) Eleventh Embodiment One embodiment corresponding to the invention described in claim 12 will be described below as an eleventh embodiment with reference to FIG. FIG. 12 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described. That is, in the present embodiment, similarly to the first embodiment, the sound insulating plate 7 is attached to the tank 3 by the upper support 4 and the lower support 6. One end of an upper cover 18 is attached to an outer end of the upper support 4. The upper cover 18 partially covers the upper surface from the upper side surface of the tank 3 where the sound insulating plate 7 is not installed, and is also supported on the upper surface of the tank 3 via a vibration isolating member 19.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, the upper cover 1
8, the sound wraparound and radiated sound from the upper side surface to the upper surface of the tank 3, which is the area where the sound insulating plate 7 is not attached, are reduced, so that the sound insulating performance can be further improved as compared with the tenth embodiment. it can.

(12) Twelfth Embodiment One embodiment corresponding to the invention described in claim 13 will be described below as a twelfth embodiment with reference to FIG. FIG. 13 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described. That is, in the present embodiment, a plurality of substantially L-shaped supports 3a including a horizontal portion and a vertical portion are provided on the outer surface of the tank 3, and the support is carried out in a state where the vibration isolating member 5 is sandwiched. The sound insulating plate 7 is superimposed on the vertical portion of 3a, and is fastened and fixed by bolts inserted in the horizontal direction.

The tank 3 is provided at the upper end of the sound insulating plate 7.
The sound insulation plate side cover 25 is arranged toward the side. The sound insulating plate side cover 25 may be formed by bending an extended portion of the sound insulating plate 7 or by disposing another component. On the other hand, the tank 3 has a tank-side cover 26 which is arranged in a non-contact manner above the sound-insulating plate-side cover 25 from the tank side surface toward the sound-insulating plate.
Are provided, and a gap 27 is formed between the covers 25 and 26.

In this case, the sound-insulating-plate-side cover 25 is composed of an inclined portion that extends obliquely upward from the upper end of the sound-insulating plate 7 and a vertical portion that extends upward from the front end thereof. And a vertical portion directed downward from the distal end thereof, and the above-described gap is provided between the vertical portions of the covers 25 and 26. further,
The horizontal protruding dimension of the sound-insulating plate-side cover 25 starting from the inner side surface of the sound-insulating plate 7 is ensured to be large enough to maintain a necessary minimum gap with the tank 3. On the other hand, the tank-side cover 26 starting from the outer surface of the tank 3
Is made as small as possible so as to maintain a necessary minimum gap 27 between itself and the sound insulation plate side cover 25.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, as compared with the conventional example shown in FIG. 23, since the tank-side cover 26 prevents the invasion of moisture, the irradiation of ultraviolet rays, and the like, the gap 27 between the tank 3 and the sound insulating plate 7 is protected by external factors. Deterioration of the vibration member 5 is prevented, long-term reliability of the vibration-proof structure can be secured, and stable sound insulation performance can be maintained. Therefore, even if the gap 27 between the covers 25 and 26 is filled with a flexible sealing material, the weather resistance and the service life do not matter. Therefore, by filling such a flexible sealing material, sound leakage from the gap 27 can be prevented, and insects can be prevented from entering. In particular, in the present embodiment, as shown in FIG. 1, the gap 27 between the covers 25 and 26 forms a curved bottleneck, and thus has a sound reducing effect by itself. In addition, similarly to the first embodiment, there is no need to separately install a rain cover or the like, so that there is an advantage that the structure can be simplified.

On the other hand, in this embodiment, the sound insulating plate 7 is mounted by directly lifting the sound insulating plate 7 and inserting the vertical portion of the sound insulating plate side cover 25 below the tank side cover 26. 7 is attached to the support 3a via the vibration isolating member 5. By such an operation, the sound insulating plate 7 can be efficiently and accurately attached, and the assembling property is excellent. In addition, the tolerance in mounting the sound insulating plate can be absorbed by the gap 27 between the covers 25 and 26, so that the sound insulating plate 7 can be mounted without a fine matching operation.

Further, as shown in FIG. 1, the horizontal projection of the sound-insulating plate-side cover 25 starting from the inner surface of the sound-insulating plate 7 is as large as possible to minimize the size of the tank-side cover 26. Therefore, sound emission from the tank-side cover 26, which is considered to vibrate as much as the tank 3, can be minimized.

(13) Thirteenth Embodiment One embodiment corresponding to the invention described in claim 14 will be described below as a thirteenth embodiment with reference to FIG. FIG. 14 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment. That is, in the present embodiment, the tank-side cover 26 according to the twelfth embodiment is used.
The vertical portion is detachable as the support plate 28.

According to the present embodiment having such a configuration,
With the backing plate 28 of the tank side cover 26 removed,
The sound-insulating plate 7 can be arranged at a predetermined position and attached to the tank 3 simply by moving the sound-insulating plate 7 horizontally without interfering between the tank-side cover 26 and the sound-insulating plate-side cover 25.
Therefore, it is possible to attach the sound insulating plate 7 without lifting the sound insulating plate 7, and the work of attaching the sound insulating plate 7 is further simplified.

(14) Fourteenth Embodiment One embodiment corresponding to the invention described in claim 15 will be described below as a fourteenth embodiment with reference to FIG. FIG. 15 is a schematic vertical sectional view of the stationary induction device according to the present embodiment.

(Configuration) First, the configuration of the present embodiment will be described. That is, in the present embodiment, a substantially L-shaped contact plate 29 is provided at the lower end of the sound insulating plate 7. The support plate 29 is vertically moved and adjusted in accordance with the condition of the concrete 22 and the assembly tolerance, and is fixed to the sound insulation plate 7. The backing plate 29 may be a single unit or may be divided into a plurality in the longitudinal direction. Further, a specific material and a fixing method of the backing plate 29 can be freely selected.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, in the present embodiment, as shown in FIG. 15, the gap 24 between the sound insulation plate 7 and the base 21 is closed by the cover plate 29, so that the tank side surface 30 not covered by the sound insulation plate 7. The sound that was emitted and the sound pressure increased in the space 31 was not leaked,
The sound insulation performance is improved. When the surface of the concrete 22 has a large waving, it is difficult to completely close the gap 24, but the gap 24 can be reduced by dividing the plate 29 in the longitudinal direction. Further, as shown in FIG. 15, by using a substantially L-shaped contact plate 29,
The section of the narrow gap between the backing plate 29 and the concrete 22 is further lengthened, and the leaking sound is further reduced.

With respect to the assemblability, in the present embodiment, as described above, the backing plate 29 is moved and adjusted in the vertical direction in accordance with the condition of the concrete 22 and the assembly tolerance, and is fixed to the sound insulating plate 7. Therefore, vertical dimension absorption is easy. Further, in the stationary induction device of the conventional example shown in FIG. 23, the gap between the lower support 3a and the sound insulating plate 7 is sealed using the sealing material 20 in the space 31. Since the sealing member 20 can be omitted by employing the mounting plate 29, the sealing work of the gap between the lower support 3a and the sound insulating plate 7 is simple.

(15) Fifteenth Embodiment One embodiment corresponding to the invention described in claim 16 will be described below as a fifteenth embodiment with reference to FIG. FIG. 16 is a schematic front view of the stationary induction device according to the present embodiment. That is, in the present embodiment, the notch (hand hole) 32 and the cover 33 that closes the notch are arranged near the front of the pull ear 3b of the sound insulating plate 7.

According to the present embodiment having such a configuration,
The notch 32 can be used to easily attach the wire to the pull ear 3b when moving the stationary induction device. In this case, since the wire does not directly contact the sound insulating plate 7, even when the sound insulating plate 7 is attached,
An extra load is not applied to the vibration isolating member 5. Therefore, the stationary induction device can be favorably moved with the sound insulation plate 7 attached without deteriorating the sound insulation performance.

(16) Sixteenth Embodiment One embodiment corresponding to the sixteenth aspect of the present invention will be described below as a sixteenth embodiment with reference to FIGS. FIG. 17 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment, and FIG. 18 is a schematic front view thereof. That is, in the present embodiment, the lower part of the sound insulation plate 7 is the same as the backing plate 29 described in the fourteenth embodiment.
And the gap 24 are further extended to about the front of the upper pull ear 3b.

According to the present embodiment having such a configuration,
Since the wire attaching operation to the pull ear 3b and the movement of the stationary induction device can be performed with the backing plate 29 removed, the same effects as those of the fifteenth embodiment can be obtained, and the fourteenth embodiment can be obtained. The same effect can be obtained.

(17) Seventeenth Embodiment One embodiment corresponding to the invention described in claim 16 will be described below as a seventeenth embodiment with reference to FIG. FIG. 19 is a schematic front view of the stationary induction device according to the present embodiment. That is, in the present embodiment, the backing plate 29 described in the sixteenth embodiment is divided in the longitudinal direction, and is made into a plurality of backing plates having different heights.

According to the present embodiment having such a configuration,
Since the abutment plate 29 is divided in the longitudinal direction, the notch 32 is formed only in a necessary portion of the sound insulating plate 7 such as in the vicinity of the front of the pull ear 3b.
, And the gap 24 can be minimized in the other portions. As a result, the size of the support plate 29 can be reduced, and the work of mounting the support plate 29 can be simplified. In addition, of course, the fourteenth embodiment and the first
The same effect as that of the fifth embodiment can be obtained.

(18) Eighteenth Embodiment One embodiment corresponding to the invention described in claim 17 will be described below as an eighteenth embodiment with reference to FIG. FIG. 20 is a schematic front view of the stationary induction device according to the present embodiment.

(Structure) First, the structure of the present embodiment will be described. That is, in the present embodiment, a hand hole (upper hand hole) for passing a lifting wire through a horizontal portion of the upper support 3a arranged from the side surface of the tank 3 toward the upper end of the sound insulating plate 7. 34 are arranged. A handhole (lower handhole) 35 is also arranged near the front of the hanging ear 3c on the sound insulating plate 7.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, when moving the stationary induction device, the lifting wire can be easily attached to the hanging ear 3c through the upper hand hole 34. Further, the work of attaching the suspension wire and the operation of confirming the attachment state can be easily performed by the lower hand hole 35 provided near the front of the suspension ear 3c. In this case, since the wire does not directly contact the sound insulating plate 7, no extra load is applied to the sound insulating plate 7 and the vibration isolating member 5 even when the sound insulating plate 7 is attached. Therefore, the stationary induction device can be lifted and moved satisfactorily with the sound insulation plate 7 attached without deteriorating the sound insulation performance.

(19) Nineteenth Embodiment One embodiment corresponding to the eighteenth embodiment will be described below as a nineteenth embodiment with reference to FIG. FIG. 21 is a schematic longitudinal sectional view of the stationary induction device according to the present embodiment.

(Structure) First, the structure of the present embodiment will be described. That is, in the present embodiment, the jig mounting seats 36 are attached to the upper and lower ends of the sound insulating plate 7, respectively, and the seats 36 and the seats provided on the tank 3 or the support 3a (not shown). ) Is used to arrange the fixing jig 37.

(Operation and Effect) The operation and effect of the present embodiment as described above are as follows. That is, the fixing jig 37
Can be firmly connected between the tank 3 and the sound insulating plate 7 or between the support 3a and the sound insulating plate 7, so that the inertial force due to acceleration generated during transportation and the force due to accidental contact with other objects are reduced. Can be supported by the tank 3 or the support 3a without applying a load to the vibration isolating member 5. Therefore, without impairing the sound insulation performance, the sound insulation plate 7
It is possible to favorably move the stationary induction device with the device attached.

(20) Other Embodiments The present invention is not limited to the above embodiments, and the materials, dimensions, shapes, numbers, etc. of the respective members can be changed as appropriate.

For example, as another embodiment corresponding to the first aspect of the present invention, it is possible to dispose the sound insulating plate in a shape covering the upper portion of the upper support, contrary to the first embodiment. .

In another embodiment corresponding to the fifth aspect of the present invention, the sound insulating plate 7 is made of a soft material,
It is also possible to increase the vibration damping rate by increasing the elasticity as a flexible concavo-convex processing to suppress vibration in a high frequency region where sound is generated from the sound insulating plate 7.

As another embodiment corresponding to the seventh aspect of the present invention, a damping paint is applied to the soundproof plate 7 together with or instead of the damping sheet 13 in the sixth embodiment. It is also possible to enhance the vibration damping performance by coating.

Further, as another embodiment corresponding to the ninth aspect of the present invention, the sound insulating plate 7 in the eighth embodiment may be attached to the channel-shaped reinforcing member 15 via the lower support 6. .

On the other hand, as another embodiment corresponding to the invention of claim 16, the structures of the notch 32 and the abutment plate 29 described in the fifteenth to seventeenth embodiments are not limited to the pull ear 3b. The present invention can be similarly applied to a jack receiver used when jacking up a stationary induction device.

As another embodiment corresponding to the seventeenth aspect, the arrangement of the handhole described in the eighteenth embodiment can be freely selected. That is,
In the eighteenth embodiment, the case where the handhole 34 is provided in the horizontal portion of the upper support 3a has been described. Can be provided in the same manner. For example, it can be provided on the sound insulating plate-side cover 25 or the tank-side cover 26 in the twelfth embodiment, or can be provided on the upper end of the sound insulating plate 7 main body. The same effect as described above can be obtained.

As another embodiment corresponding to the eighteenth aspect of the present invention, the configuration for mounting the jig described in the nineteenth embodiment can be freely selected. That is, in the nineteenth embodiment, the case where the seat 36 is provided as the configuration for mounting the jig has been described. However, the configuration for mounting the jig is not limited to this. It is also possible to provide a screw hole directly in 7.

Needless to say, a plurality of embodiments selected from the first to eighteenth embodiments described above can be implemented by appropriately combining some or all of them. Nor.

[0106]

As described above, according to the present invention, according to the present invention, the upper portion between the tank and the sound insulating plate is covered by the upper support, or the sound insulating plate side cover and the tank side cover are arranged so as to overlap while maintaining a gap. This makes it possible to provide a highly reliable stationary induction device with improved assemblability and sound insulation performance. In addition, by providing a backing plate and a handhole, it is possible to provide a highly reliable stationary induction device which can be moved with the sound insulating plate attached while improving the assemblability and the sound insulating performance.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view showing a first embodiment of a stationary induction device according to the present invention.

FIG. 2 is a schematic vertical sectional view showing a mounting structure of a lower vibration isolator in FIG.

FIG. 3 is a schematic longitudinal sectional view showing a second embodiment of the stationary induction device according to the present invention.

FIG. 4 is a schematic longitudinal sectional view showing a third embodiment of the stationary induction device according to the present invention.

FIG. 5 is a schematic longitudinal sectional view showing a fourth embodiment of the stationary induction device according to the present invention.

FIG. 6 is a schematic longitudinal sectional view showing a fifth embodiment of the stationary induction device according to the present invention.

FIG. 7 is a schematic vertical sectional view showing a sixth embodiment of the stationary induction device according to the present invention.

FIG. 8 is a schematic longitudinal sectional view showing a seventh embodiment of the stationary induction device according to the present invention.

FIG. 9 is a schematic vertical sectional view showing an eighth embodiment of the stationary induction device according to the present invention.

FIG. 10 is a schematic longitudinal sectional view showing a ninth embodiment of the stationary induction device according to the present invention.

FIG. 11 is a schematic longitudinal sectional view showing a tenth embodiment of the stationary induction device according to the present invention.

FIG. 12 is a schematic longitudinal sectional view showing an eleventh embodiment of the stationary induction device according to the present invention.

FIG. 13 is a schematic vertical sectional view showing a twelfth embodiment of the stationary induction device according to the present invention.

FIG. 14 is a schematic longitudinal sectional view showing a thirteenth embodiment of the stationary induction device according to the present invention.

FIG. 15 is a schematic longitudinal sectional view showing a stationary induction device according to a fourteenth embodiment of the present invention.

FIG. 16 is a schematic front view showing a fifteenth embodiment of the stationary induction device according to the present invention.

FIG. 17 is a schematic longitudinal sectional view showing a sixteenth embodiment of the stationary induction device according to the present invention.

18 is a schematic front view of FIG.

FIG. 19 is a schematic front view showing a seventeenth embodiment of a stationary induction device according to the present invention.

FIG. 20 is a schematic front view showing a stationary induction device according to an eighteenth embodiment of the present invention.

FIG. 21 is a schematic vertical sectional view showing a nineteenth embodiment of the stationary induction device according to the present invention.

FIG. 22 is a schematic longitudinal sectional view showing an example of a conventional stationary induction device.

FIG. 23 is a schematic vertical sectional view showing another example of the conventional stationary induction device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Iron core 2 ... Winding 3 ... Tank 3a ... Support 3b ... Pull ear 3c ... Hanging ear 4 ... Upper support 4a, 7a ... Holding plate 5, 19 ... Vibration-proof member 5a ... Upper vibration-proof member 5b ... Lower vibration-proof member 5c, 12: bottom vibration isolator 6: lower support 7: sound insulating plate 8: through hole 9: mounting screw 10: mounting nut 11: uneven sound insulating plate 13: damping sheet 14: sound absorbing material 15: channel-shaped reinforcing member 16: screen DESCRIPTION OF SYMBOLS 17 ... Diffraction prevention member 18 ... Top cover 20 ... Seal material 21 ... Basic base 24,27 ... Gap 25 ... Sound insulation plate side cover 26 ... Tank side cover 28,29 ... Plate plate 32 ... Notch 33 ... Cover 34,35 ... Handhole 36 ... Seat 37 ... Fixing jig

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seiji Iwasaki 2-1 Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside the Toshiba Hamakawasaki Plant (72) Inventor Shoichi Takeo 2, Ukishima-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa No. 1 Inside the Toshiba Hamakawasaki Plant

Claims (18)

[Claims] 1. A stationary induction electric machine in which a stationary induction body is housed in a tank together with an insulating medium, and a sound insulating plate for covering the side surface of the stationary induction device is attached to the tank via a vibration isolating member. The support member includes an upper support member attached to an upper side surface of a tank, and the support member includes one of the upper support member and the sound insulating plate. A stationary induction device characterized by being arranged in a shape that covers the other upper part. 2. The tank according to claim 1, wherein the tank is installed on a foundation base, and a bottom vibration isolator is provided between a lower end of the sound insulating plate and the foundation base. Stationary induction appliance. 3. The sound insulation plate is supported by a lower support member attached to a lower part of the side surface of the tank via a lower vibration isolator, and the sound insulation plate is positioned with respect to the lower support member. A bolt member is attached to a part of the lower vibration isolating member, and a through hole for the bolt member is formed on the sound insulating plate side so that the nut member can be tightened and fixed from the outside of the sound insulating plate. The static induction device according to claim 1 or 2, wherein: 4. The stationary induction device according to claim 1, wherein the sound insulating plate is suspended and supported by the upper supporting member via the vibration isolating member. 5. The static induction electric device according to claim 1, wherein the sound insulating plate is provided with a concavo-convex pattern. 6. The vibration isolating member, a first vibration isolating member pressed and joined between the upper support member and the sound insulating plate surface, and plate members provided on the upper support member and the sound insulating plate, respectively. The stationary induction device according to any one of claims 1 to 5, further comprising a second vibration isolation member supported by a vertical pressing force therebetween. 7. The stationary device according to claim 1, wherein at least one of disposing a damping sheet and applying a damping paint is applied to a surface of the sound insulating plate. Induction machine. 8. A sound absorbing material is provided on a surface of the sound insulating plate on the tank side.
The static induction appliance according to any one of claims 1 to 7. 9. The static induction device according to claim 1, wherein the upper support member is attached to a channel-shaped reinforcing member attached to a side surface of the tank. . 10. A screen standing upright above the sound insulating plate,
The static induction device according to any one of claims 1 to 9, wherein the static induction device is formed by being attached to the upper support member. 11. The stationary induction device according to claim 10, wherein a member having a circular cross section is attached to an upper end portion of said screen. 12. The tank according to claim 1, wherein an upper cover is provided from a side surface to an upper surface of the upper portion of the tank to cover a portion where the sound insulating plate is not provided. Stationary induction appliance. 13. A sound insulating plate side cover having a shape covering an upper portion of the upper support member is provided at an upper end portion of the sound insulating plate, and the upper portion of the tank is formed by holding a gap with the sound insulating plate side cover portion. The stationary induction device according to claim 1, further comprising a tank-side cover having a covering shape. 14. The static induction device according to claim 13, wherein the tank-side cover is configured to be disassembled. 15. The stationary induction device according to claim 1, wherein a plate for closing a lower space formed between the tank and the sound insulating plate is disposed at a lower end portion of the sound insulating plate. 16. The stationary induction device according to claim 1, wherein a handhole is disposed in the sound insulation plate in the vicinity of the front of the ear of the tank. 17. The sound insulating plate body, at least one of a member arranged from the upper end of the sound insulating plate toward the tank, and a member arranged from the tank side toward the upper end of the sound insulating plate, The stationary induction electric device according to claim 1, wherein a handhole for passing a lifting wire is arranged, and a handhole is arranged near a front surface of a suspension ear of the tank on the sound insulating plate. 18. The apparatus according to claim 1, wherein a portion between the tank and the sound insulating plate or a portion between the supporting member and the sound insulating plate is directly fixable using a fixing jig.
The static induction device as described.