JPH10208952A - Low noise stationary induction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the installed spaces of upper and lower common pipelines by burying the pipelines in a sound insulating wall. SOLUTION: Upper and lower common pipelines 7 are buried in a sound insulating wall 2 in such a state that the pipelines 7 are closely adhered to the wall 2 so that no gap may be formed between the pipelines 7 and wall 2. In addition, the iron plate 2B of the wall 2 is welded to the pipelines 7 and the concrete layer or soundproof material 2A of the wall 2 is brought into contact with the pipelines 7. In addition, part of the wall 2 is replaced by the pipelines 7. The pipelines 7 are constituted of double metallic plates on the outside of the wall 2 and, at the same time, tightly joined with the wall 2. When the pipelines 7 are installed in such a way, the installed spaces of the pipelines 7 can be reduced and, at the same time, the facility cost of the pipelines 7 can be saved, because the number of parts can be reduced. In addition, the transportation cost of the pipelines 7 is reduced, because the number of parts to be transported is reduced, and the labor required for the installing work of the pipelines 7 at a job site can also be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-noise stationary induction device in which a transformer, a reactor and the like are surrounded by a soundproof wall, and more particularly to a low-noise stationary induction device requiring a small installation space.

[0002]

2. Description of the Related Art FIG. 5 is a partially broken plan view showing the configuration of a conventional low-noise stationary induction device. The periphery of the tank 1 containing the stationary induction device main body together with the refrigerant is surrounded by a soundproof wall 2. In FIG. 5, the ceiling of the soundproof wall 2 is partially broken, so that the inside of the soundproof wall 2 can be seen from the upper surface. The upper pipe 10A for guiding the refrigerant to the cooler 3 is
It is attached to a place. The upper pipes 10A are drawn out of the soundproof wall 2 via the on-off valve 6 and the expansion joint 5, respectively, and are connected two by two to the common pipes 7 on both sides. Each common pipe 7 is connected to six coolers 3 via respective on-off valves 4.

FIG. 6 is a partially broken side view of the apparatus of FIG. In FIG. 6, the side of the soundproof wall 2 is partially crushed,
The inside can be seen from the side. An upper pipe 10A and a lower pipe 10B are attached to the upper and lower sides of the tank 1, respectively. Like the upper pipe 10A, the lower pipe 10B is drawn out of the soundproof wall 2 via the on-off valve 5 and the expansion joint 6, respectively, is connected to the common pipe 7 on both sides, and is connected via the respective on-off valve 4. Connected to the cooler 3. Tank 1 and soundproof wall 2
Are fixed to the base 8.

FIG. 7 is a sectional view taken along the line YY of FIG. The soundproof wall 2 is composed of a concrete layer or a soundproof material 2A and an iron plate 2B on the outer periphery thereof. Through holes 12 for passing the upper pipe 10A and the lower pipe 10B are provided in the upper and lower side surfaces of the soundproof wall 2, respectively. ing. The through hole 12 is closed by a metal sound insulating plate 11. Tank 1
It is fixed to a base 8 via a base frame 9. The soundproof wall 2 prevents noise generated from the stationary guidance device itself from being radiated to the outside. The sound insulating plate 11 is for preventing noise of the stationary induction device main body from leaking to the outside from the through hole 12.

Returning to FIG. 6, the cooling mechanism of the low-noise stationary induction equipment will be described. During operation, the on-off valves 4 and 5 are open. The refrigerant heated by the stationary induction device main body (not shown) in the tank 1 is guided from the upper pipe 10A to the outside of the soundproof wall 2 via the on-off valve 5 and the expansion joint 6, and flows into the upper common pipe 7. After the refrigerant once merges in the upper common pipe 7, it is diverted to each cooler 3 via the on-off valve 4. The refrigerant cooled by the cooler 3 once merges into the lower common pipe 7 via the lower opening / closing valve 4. The refrigerant in the lower common pipe 7 is guided into the soundproof wall 2 by the lower pipe 10 </ b> B, and returns to the tank 1 via the expansion joint 6 and the on-off valve 5. Thereafter, the refrigerant circulates between the tank 1 and the cooler 3 in the same manner, and the stationary induction device main body is cooled.

[0006] The common pipe 7 is for joining the refrigerant and equally dividing the refrigerant to the plurality of coolers 3. The expansion joint 6 is for adjusting the axial direction and length of the pipe, and can absorb the displacement of the connection between the installed tank 1 and the common pipe 7. Furthermore, on-off valve 5
Is for partitioning the refrigerant between the tank 1 side and the cooler 3 side, and is opened and closed when the low-noise stationary induction device is installed or when the cooler 3 is replaced. As the refrigerant, insulating oil or insulating gas is used.

The arrangement shown in FIGS. 5 to 7 is an example of a self-cooling type low-noise stationary induction device. However, by interposing a pump in the lower pipe 10B, a forced cooling low-noise stationary induction device is provided. Can also be configured.

[0008]

However, the conventional apparatus as described above has a problem that the installation space is large. That is, in FIG. 7, since the cooler 3 and the common pipe 7 are arranged outside the soundproof wall 2, a large installation space is required for the low-noise stationary induction device as a whole. If you can reduce the installation space a little,
Equipment costs can be reduced.

An object of the present invention is to reduce the installation space for a low-noise stationary induction device.

[0010]

According to the present invention, in order to achieve the above object, the outer periphery of a tank accommodating a stationary induction device main body together with a refrigerant is surrounded by a soundproof wall. A cooler is provided, and an upper pipe for penetrating the upper part of the soundproof wall and guiding the refrigerant from the tank to the cooler, and a lower pipe for penetrating the lower part of the soundproof wall and guiding the refrigerant from the cooler to the tank are provided. An upper common pipe is provided in which the refrigerant flowing out of the tank is once merged in the middle of the upper pipe and then divided into a plurality of coolers, and the refrigerant discharged from the plurality of coolers is merged once in the middle of the lower pipe. In a low-noise stationary induction device in which a lower common pipe to be sent to a tank is interposed, the upper and lower common pipes may be embedded in a soundproof wall. As a result, the installation space for the low-noise stationary induction device is reduced only in the common pipe portion, and the conventionally required sound insulation plate is not required. Instead, the common pipe plays a role of sound insulation.

In this configuration, the upper and lower common pipes may be fixed to the soundproof wall. Thereby, the number of parts to be transported to the installation site is reduced by the amount of the common piping.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. FIG. 1 is a partially broken plan view showing the configuration of a low-noise stationary induction device according to an embodiment of the present invention. The upper common pipe 7 is embedded in the soundproof wall 2. FIG.
FIG. 2 is a partially crushed side view of the apparatus of FIG. 1. Both the upper and lower common pipes 7 are embedded in the soundproof wall 2.

FIG. 3 is a sectional view taken along line XX of FIG. The upper and lower common pipes 7 are embedded in the soundproof wall 2, and the common pipe 7 and the soundproof wall 2 are integrally formed in close contact with each other so as not to form a gap. That is, the iron plate 2 </ b> B of the soundproof wall 2 is welded to the common pipe 7, and the concrete layer or the soundproof material 2 </ b> A is filled up to the point where it contacts the common pipe 7.

FIG. 4 is a view taken in the direction of arrow A in FIG. However,
The cooler 3 on the near side is not shown. An elongated hole 2C is provided in the iron plate 2B. The elongated hole 2C is formed smaller than the common pipe 7 so that no gap is formed between the common pipe 7 and the soundproof wall 2. The view in the direction of the arrow B in FIG. 3 has exactly the same configuration as in FIG. 1 to 4 are the same as those of the conventional configuration, and the same portions are denoted by the same reference characters and will not be described in detail.

In FIG. 3, a part of the soundproof wall 2 replaces the common pipe 7. The common pipe 7 is formed of a double metal plate to the outside of the soundproof wall 2,
The common pipe 7 and the soundproof wall 2 are joined so that there is no gap. Therefore, the configuration of FIG. 3 has a sufficient sound insulation effect, and the noise level outside the sound insulating wall 2 in the apparatus of FIG.
It has been confirmed that there is no difference from that of the conventional device.

In the apparatus shown in FIG. 3, the installation space for the low-noise stationary induction equipment is reduced only in the common pipe 7 as compared with the conventional apparatus. The diameter of the common pipe 7 is 200 mm to 2
Since it is about 50 mm, embedding the common pipes 7 on both sides in the soundproof wall 2 reduces the installation space on the cooler 3 side of the low-noise stationary induction device from 400 mm to 500 mm. Thereby, equipment costs are reduced. In addition, a conventionally required sound insulating plate is not required, and there is an effect of cost reduction by reducing the number of parts.

Further, in the apparatus shown in FIG. 3, if the common pipe 7 is welded in advance to the iron plate 2B of the soundproof wall 2 at the manufacturing plant, the common pipe 7 is installed integrally with the soundproof wall 2 and transported to the site. , The number of transport parts is 7
And transportation costs are reduced. In addition, the work of installing the common pipe 7 at the installation site can be labor-saving compared to the related art.

[0018]

As described above, according to the present invention, since the upper and lower common pipes are embedded in the soundproof wall, the installation space on the cooler side of the low-noise stationary induction equipment is reduced, and the equipment cost is reduced. Further, no sound insulation plate is required, and the cost due to the reduction in the number of parts is reduced.

In this configuration, since the upper and lower common pipes are fixed to the soundproof wall, the number of transport components is reduced, and the transport cost is reduced. Also, labor for installing the common piping at the installation site can be saved.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view showing a configuration of a low-noise stationary induction device according to an embodiment of the present invention.

FIG. 2 is a side view of a partially crushed apparatus of FIG. 1;

FIG. 3 is a sectional view taken along line XX of FIG. 1;

FIG. 4 is a view taken in the direction of arrow A in FIG. 3;

FIG. 5 is a partially crushed plan view showing the configuration of a conventional low-noise stationary induction device.

FIG. 6 is a partially broken side view of the apparatus of FIG. 5;

FIG. 7 is a sectional view taken along line YY of FIG. 5;

[Explanation of symbols]

1: tank, 2: soundproof wall, 2A: concrete layer or soundproof material, 2B: iron plate, 2C: long hole, 3: cooler, 4,5:
On-off valve, 6: expansion joint, 7: common piping, 8: base,
9: Basic frame, 10A: Upper piping, 10B: Lower piping, 11: Sound insulation plate, 12: Through hole

Claims (2)

[Claims] An outer periphery of a tank accommodating a stationary induction device main body together with a refrigerant is surrounded by a soundproof wall, and a plurality of coolers are arranged outside the soundproof wall. An upper pipe for guiding the refrigerant and a lower pipe for penetrating the lower part of the soundproof wall and guiding the refrigerant from the cooler to the tank are provided. A low-noise stationary system with an upper common pipe intervening to diverge to the cooler, and a lower common pipe intervening in the middle of the lower pipe that once joins refrigerant from multiple coolers and sends it to the tank A low-noise stationary induction device, wherein the upper and lower common pipes are embedded in a soundproof wall. 2. The low-noise stationary induction device according to claim 1, wherein the upper and lower common pipes are fixed to a soundproof wall.