JPH07161549A - Electric machine device - Google Patents

Abstract

PURPOSE:To provide an electric machine device in which the noise damping effect and economy are enhanced. CONSTITUTION:The electric machine comprises a sound isolation side wall 17 surrounding a noise source, i.e., an electric machine body 16, having the inner face applied with an acoustic material 19 through a gap 20, and a sound isolation ceiling wall 18 surrounding the electric machine body 16 through a gap 20 while being secured to the upper part of the side wall 17 and having the inner face applied with the acoustic material 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention covers an electric equipment body, such as a transformer or a reactor, which is a noise source, with a soundproof side wall having a sound absorbing material adhered to its inner surface to reduce noise. The present invention relates to a device.

[0002]

2. Description of the Related Art In recent years, due to an increase in power demand, substations have been installed adjacent to houses in the suburbs of cities, and in electrical equipment such as transformers and reactors, noise generated during operation is polluted. The demand for low noise is becoming more severe so that it does not become a source of noise. Most of the noise of such electric equipment is the air-borne sound in which the excitation vibration generated during operation vibrates the outside air through the housing of the electric equipment, and this air vibration is radiatively propagated. Noise reduction measures have been taken in the configuration described.

FIG. 5 is a sectional view showing the structure of a conventional electric equipment device of this kind, FIG. 6 is a sectional view showing a cross section taken along line VI-VI in FIG. 5, and FIG. 7 is an external view of the electric equipment device in FIG. FIG. In the figure, reference numeral 1 denotes a main body of an electric device, such as a transformer or a reactor, which is a noise source installed on a base 2, and 3 denotes a mounting frame embedded in the base 2 so as to surround the main body 1 of the electric device. Reference numeral 4 is a hanger that is fixed to the upper part of the electric device body 1 by welding.

Reference numeral 5 denotes a plurality of soundproof panels having an inner surface to which a sound absorbing material 6 formed by molding thin fibers such as glass wool and rock wool in a plate shape is attached, and reinforcing and sound absorbing materials 6 are provided at appropriate positions.
Reinforcing frame 5a also serving as a holding member, and L-shaped attachment metal 5b is formed over the entire length at each adjacent portion. 7 is a straddle plate which is arranged across adjacent mounting metal parts 5b and is tightened with a tightening bolt 9 through a packing 8 to connect the soundproof panels 5 to each other and integrate them, and 10 is a soundproof panel 5 Similarly to the above, the sound absorbing material 11 is attached to the inner surface, and is fixed to the upper portion of the soundproof panel 5 with the tightening bolts 13 through the packing 12, and the ceiling soundproof panel is provided.
Reference numeral 4 denotes a gap formed between the electric device body 1 and the soundproof panel 5 and the ceiling soundproof panel 10, and 15 denotes a temporary support metal for overturning which is attached when the soundproof panel 5 is assembled or disassembled.

In the conventional electric equipment having the above-mentioned structure, the plurality of soundproof panels 5 having the sound absorbing material 6 adhered to the inner surface thereof are separated from the electric equipment main body 1 by a distance in which no standing wave is generated. To secure a gap 14 between the soundproof panels 5 and form a box shape by detachably connecting the soundproof panels 5 with the tightening bolts 13 by the connecting plate 7 via the packing 8.
The lower part is fixed to the mounting frame 3 by welding. On the other hand, the ceiling soundproof panel 10 having the sound absorbing material 11 adhered to the inner surface is detachably attached to the upper part of each soundproof panel 5 formed into a box shape by being connected and integrated with the packing 12 through the tightening bolts 13. A self-supporting soundproof wall is constructed by connecting to
The noise is reduced by reducing the transmission of the noise generated at.

[0006]

Since the conventional electric equipment is constructed as described above, the connection between the soundproof panels 5 and the connection between the ceiling soundproof panel 10 and the soundproof panels 5 is not possible. Where the sound absorbing members 6 and 11 cannot be mounted, the steel plate and the connecting plate 7 forming both panels 5 and 10 are located.
Since it is necessary to increase the thickness of the panel and rely on the sound insulation effect by the mass law, it is not economical, and the soundproof wall itself composed of both panels 5 and 10 is installed independently of the electric device body 1. Since it is self-supporting, it cannot be transported as a unit.

Further, since the soundproof panels 5 and the ceiling soundproof panel 10 are separated from each other, assembly at the factory, disassembly work and reassembly work at the installation site are required, and these works are done by bolting. Not only does this increase the number of work steps and increase the number of installation days due to the joining work, but it also requires equipment such as heavy equipment, which is not economical, and also prevents the soundproof panel 5 from tipping over during assembly and disassembly work. In addition, there is a problem that it is necessary to temporarily support the temporary support money 15.

The present invention has been made in order to solve the above problems, and an object thereof is to provide an electric equipment device capable of improving the noise damping effect and the economical efficiency. is there.

[0009]

According to a first aspect of the present invention, there is provided an electric equipment device, wherein a sound absorbing material is adhered to an inner surface of the electric equipment body to surround a main body of the electric equipment as a noise source with a predetermined gap, and a soundproof side wall. The sound-absorbing material is attached to the inner surface of the sound-insulating side wall, and the sound-absorbing ceiling wall covers the electric device body with a predetermined gap.

According to a second aspect of the present invention, there is provided a sound-insulating wall which surrounds the main body of an electric device, which is a noise source, with a sound-absorbing material adhered to the inner surface with a predetermined gap, and a sound-absorbing material on the inner surface. And a soundproof ceiling wall that is fixedly integrated with the upper part of the soundproof side wall and covers the main body of the electric device with a predetermined gap, and supports the main body of the electric device through a vibration isolation member that is arranged below the main body of the electric device. At the same time, it is provided with an underframe that detachably supports the lower portion of the soundproof side wall at the peripheral portion.

According to a third aspect of the present invention, in the electric equipment device according to the second aspect, the peripheral portion of the underframe supporting the lower portion of the soundproof side wall is surrounded by a sound absorbing material.

[0012]

According to the first aspect of the present invention, the soundproof side wall and the soundproof ceiling wall of the electric device unit integrally cover the main body of the electric device and efficiently block the noise generated in the main body of the electric device from leaking to the outside.

Further, the soundproof side wall and the soundproof ceiling wall of the electric equipment according to claim 1 of the present invention integrally cover the main body of the electric equipment to efficiently block the noise generated in the main body of the electric equipment from leaking to the outside. The underframe supports the main body of the electric device and the integrated soundproof side wall and soundproof ceiling wall to enable integrated transportation.

Further, the sound absorbing material surrounding the peripheral portion of the underframe of the electric equipment according to the third aspect of the present invention blocks noise generated in the electric equipment body from leaking to the outside from the peripheral portion of the underframe.

[0015]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a sectional view showing a configuration of an electric equipment device according to Embodiment 1 of the present invention, FIG. 2 is a sectional view showing a cross section taken along line II-II in FIG. 1, and FIG. 3 is an external view of the electric equipment device in FIG. It is a perspective view shown.

In the figure, reference numeral 16 designates a main body of an electric device such as a transformer or a reactor which is a noise source, and a hanger 16a fixed by welding is formed on a side surface thereof. 17
Is a soundproof side wall which is combined by welding so as to surround the electric device body 16, 18 is a soundproof ceiling wall which covers the upper side of the soundproof side wall 17 and is integrated with the soundproof side wall 17, and 19 is an integrated soundproof side wall A sound absorbing material attached to the inner surfaces of the soundproofing wall 17 and the soundproof ceiling wall 18, for example, a thin fiber formed of glass wool, rock wool or the like is formed into a plate shape, and a standing wave is generated between the sound absorbing material and the electric device body 16. A gap 20 with a constant interval that does not occur is secured.

Reference numeral 21 is an underframe installed on the foundation 22, which supports the electric equipment main body 16 via a vibration isolating member 23 made of, for example, a vibration isolating rubber, a spring, and the like. I support you. 24 and 25 are tightening bolts for fastening the electric device body 16 and the soundproof side wall 17 to the underframe 21, respectively, and 26 is a hanger 16 of the electric device body 16.
A hanger cover provided so as to cover the a and having the sound absorbing member 19 filled therein, 27 is a rope guide fixed to the soundproof ceiling wall 18 by projecting outward from the end of the soundproof ceiling wall 18, and 28 is one end of the hanger 16a. The other end of the rope connected via a rope guide 27 is suspended by a crane (not shown) at the other end, 29 is a sound-absorbing material arranged so as to surround the peripheral portion of the underframe 21, 30 Is a support metal fitting that is detachably connected to the electric device body 16 to hold the soundproof ceiling wall 10 during lifting or transportation.

In the electric equipment device according to the first embodiment having the above-described structure, the soundproof side wall 17 and the soundproof ceiling wall 18 are formed by welding into a box-shaped integral structure, and the sound absorbing material 19 is attached to the entire inner surface. Since it is worn, the sound absorbing effect is improved, the sound pressure rise in the soundproof wall is suppressed, and the noise leaking to the outside can be reduced. In addition, the box-shaped integrated structure increases rigidity and simplifies the work since bolting work is omitted.

Further, since the electric equipment main body 16 is supported via the vibration isolating member 23 on the underframe 21, and the soundproof side wall 17 is detachably supported at the peripheral edge thereof, it is possible to carry out integral transportation and transportation cost. Of course, the disassembly work at the factory and the reassembly work at the installation site are unnecessary, and the installation cost can be reduced by shortening the installation period, and the economical efficiency can be greatly improved. Further, since the peripheral portion of the underframe 21 is surrounded by the sound absorbing material 29, the vibration damping member 2
The noise leaking from the bottom of the electric device body 16 can be further reduced by the synergistic effect, together with the effect of reducing the solid-borne sound propagating from the electric device body 16 to the soundproof side wall 17 through the underframe 21 by the third aspect.

Example 2. FIG. 4 is a cross-sectional view showing the configuration of the electric equipment device according to the second embodiment of the present invention. In the figure, the same parts as those in the first embodiment shown in FIG. 31 is the electric device body 1
6 is a welder fixed to the upper side surface of 6 by welding.
A through hole for penetrating a part of the soundproof ceiling wall 18 corresponding to the above, for guiding the rope 28 to the outside, 33 is a rope guide fixed outside the through hole 32, and 34 is installation completion This is a through-hole cover that is attached to close the through-hole 32 and prevent sound leakage.

According to the second embodiment configured as described above, the rope 2 is provided in which the hanger 31 is disposed above the electric device body 16 and penetrates the through hole 32 provided in the soundproof ceiling wall 18.
Since it is hoisted by means of 8
The same effect as in the above case can be obtained, and the transportation size can be reduced as compared with the first embodiment, which is effective as a transportation measure when the transportation size restriction is particularly severe.

[0022]

As described above, according to the first aspect of the present invention, the sound-insulating side wall is attached to the inner surface of the electric equipment body which is a sound source and surrounds the main body of the electric equipment which is a noise source with a predetermined gap, and the inner surface. Since a sound absorbing material is attached and fixed to and integrated with the upper part of the soundproof side wall to cover the electric equipment body with a predetermined gap, it is possible to improve the noise damping effect and the economical efficiency. An electric device device can be provided.

According to the second aspect of the present invention, the sound absorbing wall is attached to the inner surface, and the sound absorbing wall is attached to the inner surface so as to surround the main body of the electric device serving as a noise source with a predetermined gap. And a soundproof ceiling wall that is fixedly integrated with the upper part of the soundproof side wall to cover the main body of the electric device with a predetermined gap, and supports the main body of the electric device through a vibration isolation member that is disposed below the main body of the electric device and also has a peripheral portion. Since it has an underframe that detachably supports the lower part of the soundproof side wall, it is of course possible to improve the noise damping effect.
It is possible to provide an electric device apparatus capable of integrally transporting the electric device body and the soundproof wall and further improving the economical efficiency.

According to the third aspect of the present invention, in the second aspect, since the peripheral portion of the underframe supporting the lower portion of the soundproof side wall is surrounded by the sound absorbing material, the economy is improved. Therefore, it is possible to provide the electric device device capable of further improving the noise damping effect.

[Brief description of drawings]

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

FIG. 2 is a sectional view showing a section taken along line II-II in FIG.

3 is a perspective view showing the external appearance of the electric device apparatus in FIG. 1. FIG.

FIG. 4 is a cross-sectional view showing a configuration of an electric device device according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a configuration of a conventional electric equipment device.

6 is a cross-sectional view showing a cross section taken along line VI-VI in FIG.

FIG. 7 is a perspective view showing the external appearance of the electric device apparatus shown in FIG.

[Explanation of symbols]

 16 Electrical Equipment Main Body 16a, 31 Lifter 17 Soundproof Sidewall 18 Soundproof Ceiling Wall 19, 29 Sound Absorbing Material 20 Gap 21 Underframe 23 Vibration Isolator 26 Lifter Cover 27, 33 Rope Guide 28 Rope

Claims (3)

[Claims] 1. A main body of an electric device as a noise source, a soundproof side wall having an inner surface to which a sound absorbing material is adhered to surround the main body of the electric device with a predetermined gap, and a sound absorbing side wall having an inner surface to which the sound absorbing material is adhered. And a soundproof ceiling wall that is fixedly integrated with the upper part of the electric device and covers the electric device body with a predetermined gap therebetween. 2. A main body of an electric device which is a noise source, a soundproof side wall having an inner surface to which a sound absorbing material is attached and surrounding the main body of the electric device with a predetermined gap, and a sound absorbing side wall having an inner surface to which the sound absorbing material is attached. A soundproof ceiling wall integrally fixed to the upper part of the electric device to cover the main body of the electric device with a predetermined gap, and a peripheral edge portion that supports the main body of the electric device via a vibration isolating member that is disposed below the main body of the electric device. And an underframe that detachably supports the lower portion of the soundproof side wall. 3. The electric device apparatus according to claim 2, wherein a peripheral portion of the underframe which supports the lower portion of the soundproof side wall is surrounded by a sound absorbing member.