JP2012255322A - Power receiving and transforming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power receiving and transforming device for protecting various equipment inside the device body from being exposed to water when an area therearound is flooded.SOLUTION: In the power receiving and transforming device for transforming electricity transmitted from an electric power station via a substation, an air-sealing protection member 2 is provided covering a whole cubicle 1. The internal volume of the protection member 2 is determined to limit a water exposure level inside the protection member 2 when flooded at a predicted water level H, within an allowable value h, by means of a balance between the compressive force of water 12 entering from the lower part of the protection member 2 on sealed air 13 inside the protection member 2 and the repulsive force of the compressed air.

Description

  The present invention relates to a power receiving / transforming device that transforms electricity transmitted from a power plant through a substation, and more particularly to a power receiving / transforming device capable of protecting various devices inside the device main body from inundation even if the periphery is flooded. .

  Conventionally, this type of power receiving / transforming device includes a roof member that covers the front upper part of a cubicle type high voltage power receiving equipment, which is disposed by connecting and separating the roof parts of metal casings, and a side end portion of the cubicle type high voltage power receiving equipment. A pair of wall members with doors connected to each other form a space for maintenance so that work can be easily performed at night or in the rain (see, for example, Patent Document 1).

JP 2010-17012 A

  However, in such a conventional power receiving and transforming device, various devices inside the device main body can be protected from rainwater by the roof member, but if the surrounding area is flooded due to flooding or the like, the water inside the device main body is submerged. The internal devices could not be protected from flooding.

  In view of the above, an object of the present invention is to provide a power receiving and transforming device that can cope with such problems and can protect various devices inside the apparatus main body from flooding even if the surrounding area is flooded.

  In order to achieve the above object, a power receiving / transforming device according to the present invention is a power receiving / transforming device that transforms electricity transmitted from a power plant through a substation, and includes a protective member that covers the entire device body and has airtightness. And the internal volume of the protective member is defined by the compressive force of the compressed air against the sealed air inside the protective member and the repulsive force of the compressed air by water that has entered from the lower part of the protective member when the water level is preliminarily flooded. According to the balance, the water level in the protective member is determined so as to be limited within an allowable value.

  With such a configuration, an airtight protective member provided to cover the entire power receiving / transforming device body that transforms electricity transmitted from the power plant through the substation, and the inside of the protective member by water that has entered from the lower portion of the protective member The water level in the protective member is limited to an allowable value by a balance between the compression force of the compressed air against the sealed air and the repulsive force of the compressed air.

  Further, the protective member is provided with a waterproof door that opens and closes an opening formed on the front side thereof. Thereby, the opening of the front side of a protection member is opened and closed with the waterproof door provided in the protection member.

  And the said waterproof door has the waterproof performance of the protection grade 7 grade or more which does not immerse inside even if submerged in the conditions of the constant water pressure temporarily prescribed | regulated by JIS specification. As a result, the waterproof door having the waterproof performance of the protection class 7 or higher defined in the JIS standard prevents water from entering inside even if it is temporarily submerged in a constant water pressure condition.

  According to the first aspect of the present invention, even if the periphery is flooded due to flooding or the like, the protective member that covers the entire apparatus main body has airtightness. The sealed air in the protective member is compressed, and the water level in the protective member can be limited to an allowable value by the balance between the compressive force and the repulsive force of the compressed air. Therefore, various devices inside the apparatus main body can be protected from water immersion. Thus, conventionally, individual terminals, switches, meters, etc. had to be used waterproof, but according to the present invention, the terminals of the control panel can be exposed and maintained. Inspection work becomes easy.

  Moreover, according to the invention which concerns on Claim 2, in the state which opened the waterproof door, inspection, operation, and maintenance of various apparatus inside an apparatus main body can be performed easily from a front opening, and in the state which closed the waterproof door It can be waterproofed to protect various devices inside the device body from being flooded.

  Furthermore, according to the invention which concerns on Claim 3, even if an apparatus main body is submerged, it can prevent being flooded into an apparatus main body inside from a waterproof door.

It is a figure which shows embodiment of the power receiving and transformation apparatus by this invention, (a) is a front view of the state which opened the waterproof door, (b) is a side view of the state which closed the waterproof door. It is a cross-sectional side view explaining the waterproof principle of the power receiving and transforming device according to the present invention. It is explanatory drawing which shows the relationship between a flooding water level and an inundation water level.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1A and 1B are diagrams showing an embodiment of a power receiving and transforming device according to the present invention. FIG. 1A is a front view showing a state in which a waterproof door is opened, and FIG. 1B is a side view showing a state in which the waterproof door is closed. This power receiving / transforming device transforms electricity transmitted from a power plant through a substation, and includes a cubicle 1 and a protection member 2.

  The cubicle 1 includes various devices such as a section switch, disconnector, circuit breaker, transformer, protective relay, control device, measuring device, and low-voltage distribution facility in the electrical device installation section 3 shown in FIG. It constitutes the main body of the power receiving / transforming device, and is installed outdoors, for example.

  Specifically, the cubicle 1 is installed on a pedestal 4 made of concrete, for example, having a height of about 20 cm, with the bottom of the housing fixed with bolts. The various devices are installed at an upper position that is separated from the bottom surface of the housing by about 20 cm or more. In this case, the allowable limit of the water level inside the cubicle 1 is about 40 cm at the maximum. Further, the cubicle 1 is provided with an opening / closing door 5 on the front surface of the housing so that the device can be easily operated and inspected, and the side wall 6 is formed to be removable so that the maintenance of the device can be performed. Inspection is now possible. A side plate (not shown) is attached to the back surface of the housing, and a top plate 7 is attached to the top.

  A protective member 2 is provided so as to cover the entire cubicle 1. This protective member 2 is used to prevent various devices from being immersed in water by flooding the interior of the cubicle 1 when the surrounding area is flooded. The protective member 2 is made of a cap-shaped metal or synthetic resin having an open bottom. It has a structure with airtightness that does not leak air except from the bottom. And it provides in the state which covered the cubicle 1 from the bottom face opening side, and the lower end part is being fixed to the concrete foundation 8, for example.

  Here, the protective member 2 can secure a space 9 of about 1 m or more on the front surface side of the cubicle 1, about 0.6 m or more on both side surfaces, and about 0.2 m or more on the back surface and ceiling side. Due to the balance between the compressive force against the sealed air inside the protective member 2 by the water that has entered from the lower part and the repulsive force of the compressed air, the water level inside the protective member 2 is limited to an allowable value, for example, within about 40 cm. The internal volume is determined to obtain.

  Specifically, the internal volume of the protective member 2 is determined based on the flood level assumed from the location of the cubicle 1 and the allowable value of the flood level. In this case, when the space 9 cannot be secured around the cubicle 1, the space 9 is secured, and then the height of the pedestal 4 is increased or the height of the electric device installation unit 3 is increased to allow the inundation water level. Increase the value.

  The protective member 2 is provided with an opening 10 on the front side thereof and a waterproof door 11 that opens and closes the opening 10. Thereby, it is possible to easily check, operate and maintain various devices inside the cubicle 1 from the front opening 10 with the waterproof door 11 opened, and waterproof the cubicle 1 with the waterproof door 11 closed. Various internal devices can be protected from flooding.

  This waterproof door 11 has a waterproof performance of a protection grade of 7 or higher, which is prescribed in JIS standard (JIS C 0920) and does not soak even if it is temporarily submerged under a constant water pressure. It has a structure.

Next, the waterproof principle of the power receiving / transforming device configured as described above will be described.
For example, when the area around the installation location of the power receiving / transforming device is flooded due to flooding or the like, the water 12 is protected in the directions of arrows A and B from the gap 13 between the lower end of the protective member 2 and the installation surface as shown in FIG. It enters the inside of the member 2.

  As the flood level increases, the inundation level inside the protective member 2 also rises. In this case, since the lower end part of the protection member 2 is submerged under the water surface, the air inside the protection member 2 is in a sealed state. Therefore, a compressive force in the direction of arrow C shown in FIG. 2 acts on the sealed air 13 as the water level rises. On the contrary, a repulsive force acting to push down the water level in the direction of arrow D shown in FIG.

  Since the repulsive force of the compressed sealed air 13 is small at the initial stage of flooding, the flooded water level rises as the flood water level rises as shown in FIG. However, since the repulsive force of the compressed sealed air 13 increases as the flooded water level rises, the amount of rise of the flooded water level gradually decreases as the flooding proceeds, as shown in FIG. And inundation stops substantially at the position where the compression force and the repulsive force are substantially balanced. In this case, when the inner volume of the protection member 2 is submerged at a water level H that is assumed in advance, the compression force of the water that has entered from the lower part of the protection member 2 against the sealing air 13 inside the protection member 2 and the compressed sealing air 13 Since the water level in the protective member 2 is determined so as to be limited within the allowable value h based on the balance with the repulsive force, the water level is within the allowable value h, and various devices within the cubicle 1 Soaked in Of course, the above-mentioned inundation level is lower than the flood level.

  Thus, according to this embodiment, even if the periphery is flooded due to flooding or the like, the protective member 2 that covers the entire cubicle 1 has airtightness. Thus, the sealed air 13 inside the protective member 2 is compressed, and the level of the water immersed in the protective member 2 can be limited to an allowable value h by the balance between this compressive force and the repulsive force of the compressed sealed air 13. . Therefore, various devices inside the cubicle 1 can be protected from flooding. Thereby, it can provide in the state which exposed the terminal etc. of the control panel, and a maintenance inspection work becomes easy.

  In addition, in the said embodiment, although the case where the waterproof door 11 was provided in the front side of the protection member 2 was demonstrated, this invention is not limited to this, The prevention door 11 may not be provided. In this case, the protective member 2 may be formed of a lightweight synthetic resin, and the lower end portion may be detachably attached to the concrete foundation 8 with the cubicle 1 covered from the opening at the lower end portion. Or you may raise / lower the protection member 2 with an raising / lowering mechanism.

  In the above embodiment, the case where the cubicle 1 is installed outdoors has been described. However, the present invention is not limited to this, and the cubicle 1 may be installed indoors. It may be installed on any rooftop.

1 ... Cubicle (device main unit)
2 ... Protective member 10 ... Opening 11 ... Waterproof door 12 ... Water 13 ... Sealed air H ... Assumed water level during submergence h ... Allowable water level

Claims (3)

A power receiving / transforming device that transforms electricity transmitted from a power plant through a substation,
A protective member having airtightness covering the entire device body is provided,
The internal volume of the protective member is determined by the balance between the compressive force of the sealed member inside the protective member by the water that has entered from the lower part of the protective member and the repulsive force of the compressed air when the water level is preliminarily submerged. The substation apparatus according to claim 1, wherein the submerged water level in the protective member is determined so as to be limited within an allowable value.   The power receiving / transforming device according to claim 1, wherein the protective member is provided with a waterproof door that opens and closes an opening formed on a front side thereof.   3. The waterproof door according to claim 2, which has a waterproof performance of a protection class of 7 or higher, which is prescribed in JIS standard and does not flood inside even if temporarily submerged under a constant water pressure condition. The receiving and transforming device described.