JP3161210B2 - Stationary induction appliance - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static induction device such as a transformer and a reactor, and more particularly to a soundproof device for reducing noise generated from a main body of the device.

[0002]

2. Description of the Related Art In general, there are the following causes for generating noise of a stationary induction device such as a power transformer or a reactor. The primary causes are vibration caused by magnetostriction of silicon steel sheet, vibration caused by magnetic force acting between seams and laminations of the iron core, vibration caused by electromagnetic force acting between wire conductors or coils, and pumps and fans in the case of forced cooling. Vibration generated by the auxiliary equipment.

[0003] Secondary causes of noise generation of stationary induction devices include resonance of iron cores, tanks, radiators, and attached equipment, and the like.
Insufficient tightening of metal parts, chattering due to incomplete contact, abnormal vibration due to surging of piping systems, resonance and reflection of buildings, etc. To reduce the noise of stationary induction equipment, reduce the cause of these
What is necessary is just to reduce the propagation of the vibration.

[0004] Among these causes, the vibration caused by the magnetostriction phenomenon of the silicon steel sheet is considered to be the largest noise of the stationary induction device. The magnetostrictive vibration of the iron core propagates through the side plate of the tank, the bottom plate of the tank, the radiator, etc. through an insulating cooling medium such as an iron core clamp, insulating oil, etc., to generate noise.

[0005] As a first method for reducing the noise of a stationary induction device with a soundproof plate, there is a soundproof wall system in which the static induction device is covered with a soundproof wall. FIG. 8 is a side sectional view showing a stationary induction device of a soundproof wall type. In FIG. 8, a stationary induction device 24 in which a stationary induction device content 21 including an iron core and a winding is housed inside a tank 23 together with an insulating cooling medium 22. Is surrounded by a soundproof wall 25.

Next, as a second method for reducing noise generated from the stationary induction device, a soundproof plate is attached to a reinforcing portion of the tank containing the stationary induction device to reduce noise from the side plate of the tank. There is a board method. FIG. 9 is a side sectional view showing a stationary induction device of a soundproof plate type. In FIG. 9, a stationary induction device 34 in which a stationary induction device content 31 including an iron core and a winding is housed in a tank 33 together with an insulating cooling medium 32. A tank reinforcing member (not shown) in the vertical direction and a tank reinforcing member 35 in the horizontal direction are provided on a side plate of the tank 33, and the tank 3 divided by the tank reinforcing member 35 and the like is provided.
A soundproof plate 36 made of a steel plate is attached so as to cover the side plates 3 at an interval. A soundproof material (a glass wool material or styrene foam) 37 is attached to a side plate of the tank 33 by bonding or the like.

[0007]

However, in the configuration of the static induction device of the soundproof wall type as shown in FIG. 8, the noise can be surely reduced, but another building is formed outside the static induction device. Costs such as material costs, processing costs, man-hours for assembly, etc. are required, the installation area, weight, etc. are large, and the stationary induction device and the soundproof wall must be transported separately, which means that the construction period will be large. There were challenges.

Next, in the configuration of the stationary induction device of the soundproofing plate type as shown in FIG. 9, the material cost is smaller than that of the soundproofing wall type, so that it can be transported integrally with the tank. This vibration is transmitted from the mounting portion, and the soundproof plate itself vibrates, so that there is a problem that it is difficult to reduce noise.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides a soundproofing device for a stationary induction electric appliance having a small installation area and weight, a shortened construction period and a reduced cost, and a large soundproofing effect. The purpose is to do.

[0010]

In order to achieve the above-mentioned object, in a first aspect of the present invention, there is provided a stationary induction device in which a lateral and / or vertical tank reinforcing member is provided outside a side plate of a tank. Then, a damping plate formed by bonding a plurality of steel plates with a resin so as to cover the side plate of the tank at a predetermined interval is attached to the tank reinforcing member via a packing.

[0011] In a second invention of the stationary induction device of the present invention,
The soundproofing material and the vibration damping material are superimposed on the outside of the side plate of the tank having the horizontal and / or vertical tank reinforcing member so as to cover the side plate of the tank at a predetermined interval, and through a packing. Attached to the tank reinforcing member.

[0012] In the third invention of the stationary induction device of the present invention,
The soundproofing material, the vibration damping material, and the steel plate are superimposed on the outside of the side plate of the tank having the horizontal and / or vertical tank reinforcing members so as to cover the tank side plate at a predetermined interval, and the packing is carried out via packing. Attach to tank reinforcement.

[0013]

According to the first aspect of the static induction device of the present invention, of the noise generated by the static induction device, most of the sound wave that reaches the side plate of the tank is absorbed by the sound absorbing material and exits outside the sound absorbing material. The sound waves are further attenuated by the outer damping steel plate, and the noise leaking to the outside is greatly reduced. In addition, since a part of the vibration generated from the stationary induction device is attached to the mounting seat via the packing, the vibration transmitted to the soundproof panel is greatly reduced. Further, a soundproof panel is formed by attaching a damping steel plate to a mounting frame formed in a frame shape by using a steel material having an L-shaped cross section, and the soundproof panel is formed by a packing. Rainwater can be prevented from entering.

According to the third aspect of the stationary induction device of the present invention, of the noise generated from the stationary induction device, the sound wave that reaches the side plate of the tank is mostly absorbed by the sound absorbing material and is emitted outside the sound absorbing material. The sound waves are further attenuated by the outer vibration damping material and the sound insulating plate, and the noise leaking to the outside is greatly reduced. Also,
Since a part of the vibration generated from the stationary induction device is attached to the mounting seat via the packing, the vibration transmitted to the soundproof panel is greatly reduced. Furthermore, since the soundproof panel has a box-shaped structure and is attached to the mounting seat via the packing, it is possible to prevent rainwater from entering the end of the soundproof panel.

According to the third aspect of the static induction device of the present invention, of the noise generated from the static induction device, most of the sound wave that reaches the side plate of the tank is absorbed by the sound absorbing material and exits outside the sound absorbing material. The sound wave is further attenuated by the outer vibration restraint, the vibration damping material and the soundproofing material, and the noise leaking to the outside is greatly reduced. In addition, since a part of the vibration generated from the stationary induction device is attached to the mounting seat via the packing, the vibration transmitted to the soundproof panel is greatly reduced. Furthermore, since the soundproof panel has a box-shaped structure and is attached to the mounting seat via the packing, it is possible to prevent rainwater from entering the end of the soundproof panel.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
It will be described based on.

FIG. 1 is a side sectional view showing an embodiment of a static induction device according to the first invention of the present invention. In FIG. A tank reinforcing member 4 in the horizontal direction and / or a tank reinforcing member (not shown) in the vertical direction are disposed on the side plate of the tank 3. A damping steel plate 5 (formed by bonding a plurality of steel plates with a synthetic resin) is attached so as to cover the side plates of the tank 3 separated by the tank reinforcing member 4 and the like at intervals. A sound absorbing material (a glass wool material, styrene foam, or the like) 6 is attached to the side plate of the tank 3 in the same manner as in the related art.

FIG. 2 is a perspective view showing details of a soundproof plate (hereinafter referred to as a soundproof panel) to which the damping steel plate 5 of FIG. 1 is attached.
In FIG. 2, a soundproof panel 8 is formed by attaching a damping steel plate 5 to a mounting frame 7 formed of a steel material having an L-shaped cross section (for example, an L-shaped steel or a bent steel plate) in a frame shape with bolts.

FIG. 3 is a side sectional view of a main part showing the mounting structure of the soundproof panel in FIG. 1. In FIG.
A tank reinforcing member 4 is attached to the outside of the tank, and a portion of the tank 3 divided by the reinforcing member 4 includes:
A sound absorbing material 6 is attached by bonding or the like, and a rectangular frame-shaped mounting seat 9 is disposed outside the reinforcing member 4, and a plurality of mounting bolts 10 are implanted outside the mounting seat 9. ing. Damping steel plate 5 and mounting frame 7 for soundproof panel 8
Is formed in a square shape along the periphery of the damping steel plate 5,
It is fixed to the mounting bolt 10 by a nut 12 through a packing 11 having a semi-cylindrical cross section (for example, packing made of synthetic rubber such as silicon rubber).

Of the noise generated from the stationary induction electric appliance contents 1, most of the sound wave that reaches the side plate of the tank 3 is absorbed by the sound absorbing material 6, and the sound wave emitted outside the sound absorbing material 6 is the outer vibration damping steel plate 5. As a result, the noise is further reduced, and the noise leaking to the outside is greatly reduced.

A part of the vibration generated from the stationary induction device contents 1 reaches the side plate of the tank 3 and the reinforcing member 4 via the insulating cooling medium 2, but the soundproof panel 8 is attached to the mounting seat 9 via the packing 11. Since it is attached, the vibration transmitted to the soundproof panel 8 is greatly reduced.

A soundproof panel 8 is formed by attaching a damping steel plate 5 to a mounting frame 7 formed of a steel material having an L-shaped cross section (for example, an L-shaped steel or a bent steel plate) by bolts. Since it is attached to the mounting seat 9, it is possible to prevent rainwater from entering the end of the soundproof panel 8.

FIG. 4 is a side sectional view showing a main part of an embodiment of the stationary induction device according to the second invention of the present invention, FIG. 5 is a perspective view showing details of the soundproof panel of FIG. 4, and FIG. As shown in FIG. 4, a tank reinforcing member 4 is provided in the tank 3, and a sound absorbing material 6 is adhered to a portion separated by the reinforcing member 4 outside the tank 3. A rectangular frame-shaped mounting seat 9 is arranged outside the reinforcing member 4, and a plurality of mounting bolts 10 are arranged outside the mounting seat 9.

As shown in FIGS. 4 and 5, the soundproof panel 13 has a damping material 15 made of a polymer material having a thickness of 1 to 5 mm inside a soundproof plate 14 made of a steel plate formed in a box shape. It is configured together. The soundproof panel 13 including the soundproof plate 14 and the vibration damping material 15 is formed in a square shape along the periphery of the vibration damping material 15 and has a semi-cylindrical packing (for example, a synthetic rubber packing such as silicon rubber). )
The mounting bolt 10 is fixed to the mounting bolt 10 via a nut 12.

With the structure shown in FIG. 4, of the noise generated from the inside of the stationary induction device, most of the sound wave that reaches the side plate of the tank 3 is absorbed by the sound absorbing material 6. The sound wave emitted outside the sound absorbing material 6 is applied to the outer vibration damping plate 15 and the sound insulating material 1.
4 further attenuates and the corresponding leakage to the outside is greatly reduced.

FIG. 7 is a sectional view of a main part of a soundproof panel showing an embodiment of the stationary induction device according to the third invention of the present invention. In FIG. 7, the soundproof plate 14 made of a steel plate formed in a box shape is shown. Damping material 15 made of a polymer material having a thickness of 1 to 5 mm inside
And a vibration restraining plate 16 made of a steel plate for restraining vibration is further superimposed on the inside thereof. The soundproof plate 14, the vibration damper 15, and the vibration restraining plate 16
It is fixed by the same structure as in FIG. 4 in the case of the second invention. By using a perforated steel plate as the vibration restraining plate 16, an air layer between the vibration damping material 15 and the vibration restraining plate 16 can be eliminated.

With the structure shown in FIG. 7, of the noise generated from the inside of the stationary induction device, most of the sound wave that reaches the side plate of the tank 3 is absorbed by the sound absorbing material 6. The sound wave emitted outside the sound absorbing material 6 is further attenuated by the outer vibration restraining plate 16, the vibration damping material 15 and the soundproof plate 14, and the noise leaking to the outside is greatly reduced.

[0028]

As described above, the stationary induction device of the present invention has the following advantages. (1) Of the noise generated from the induction device contents, most of the sound wave that reaches the side plate of the tank is absorbed by the sound absorbing material, The sound waves emitted to the outside of the material are further attenuated by the outside damping steel plate, and the noise leaking to the outside can be greatly reduced.

(2) A part of the vibration generated from the contents of the induction electric appliance reaches the side plate and the reinforcing member of the tank via the insulating cooling medium, but since the soundproof panel is attached to the mounting seat via the packing, In addition, the vibration transmitted to the soundproof panel can be greatly reduced.

(3) A soundproof panel is formed by mounting a damping steel plate with bolts to a mounting frame formed in a frame shape by using an L-shaped steel material in cross section, and the soundproof panel is mounted on a mounting seat via a packing. Rainwater can be prevented from entering at the end.

(4) Of the noise generated from the contents of the induction electric device, the sound wave emitted to the outside of the sound absorbing material is further attenuated by the outside vibration damping material, the soundproof plate and the vibration restraining plate, and the noise leaking to the outside is greatly reduced. Can be done.

(5) By using a perforated steel plate as the vibration restraining plate for holding the vibration damping material attached to enhance the vibration damping effect, it is possible to eliminate the air layer between the vibration damping material and the vibration restraining plate.

(6) Since various types of soundproof structures were obtained,
A wide range of designs can be adopted according to the noise level.

Such excellent effects as described above can be obtained.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing details of a soundproof panel of the stationary induction device according to the first invention of the present invention.

FIG. 3 is a side sectional view of an essential part showing one embodiment of a mounting structure of the soundproof panel of the stationary induction electric device according to the first invention of the present invention.

FIG. 4 is a side sectional view showing a main part of an embodiment of the stationary induction device according to the second invention of the present invention.

FIG. 5 is a perspective view showing details of a soundproof panel of the stationary induction device according to the second invention of the present invention.

FIG. 6 is a sectional view of a principal part of a soundproof panel of a stationary induction device according to a second invention of the present invention.

FIG. 7 is a sectional view of a principal part of a soundproof panel showing an embodiment of a stationary induction device according to a third invention of the present invention.

FIG. 8 is a side sectional view of a main portion showing a conventional static induction device of a soundproof wall type.

FIG. 9 is a side sectional view of a main part showing a conventional static induction device of a soundproof plate type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Contents of stationary induction electric machine 2 ... Insulating cooling medium 3 ... Tank 4 ... Tank reinforcement member 5 ... Damping steel plate 6 ... Sound absorbing material 7 ... Mounting frame 8, 13 ... Soundproof panel 9 ... Mounting seat 10 ... Mounting bolt 11 ... Packing 12 ... Nut 14 ... Soundproof plate 15 ... Damping material 16 ... Vibration restraint plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01F 27/33

Claims (3)

(57) [Claims] 1. A stationary induction electric machine comprising an iron core and windings is housed in a tank together with an insulating cooling medium, a tank reinforcing member is provided outside a side plate of the tank, and a plurality of steel plates are made of resin. A stationary induction electric appliance, wherein a side plate of a tank is covered with a damping steel plate formed by bonding, and the damping steel plate is attached to the tank reinforcing member via a packing. 2. A stationary induction electric machine comprising an iron core and windings is housed in a tank together with an insulating cooling medium, a tank reinforcing member is disposed outside a side plate of the tank, and an inside of a box-shaped soundproof material is provided. A stationary induction electric appliance, wherein a side plate of a tank is covered with a soundproof panel formed by laminating a damping material on the tank, and the soundproof panel is attached to the tank reinforcing material via packing. 3. A stationary induction electric device comprising an iron core and windings is housed in a tank together with an insulating cooling medium, a tank reinforcing member is disposed outside a side plate of the tank, and an inside of a box-shaped soundproof material is provided. A static induction panel, wherein a side panel of the tank is covered with a soundproof panel formed by laminating a vibration damping material and a vibration restraining plate, and the soundproof panel is attached to the tank reinforcing member via packing.