JP2500411Y2 - Oil spill prevention type cubicle - Google Patents

Description

[Detailed description of the device]

[0001]

This invention relates to a cubicle,
In particular, it relates to a cubicle that houses a power receiving and transforming facility using an oil-filled transformer.

[0002]

2. Description of the Related Art A cubicle type high voltage power receiving equipment is a set of power receiving and transforming equipment housed in a metal power receiving and transforming equipment storage box, a so-called cubicle. 3 (1) is a sectional view of the cubicle 2 as seen from the front, and FIG. 3 (2) is a view as seen from above. As shown in the figure, the cubicle 2 is formed in a box shape including a floor portion 21, side wall portions 22, and a roof portion 23. The substation equipment is housed inside the cubicle 2, and the cable 4 connected to the substation equipment is
The cubicle 2 is taken out under the floor from the take-out hole 24 formed in the floor portion 21.

According to the current Fire Defense Law, it is obligatory for a power receiving and transforming facility using an oil-immersed transformer to have an oil barrier such as concrete erection around the facility in order to prevent oil leakage. Therefore, when installing a cubicle-type high-voltage power receiving equipment that houses an oil-filled transformer, a concrete dike 31 is provided between each of the foundations 3 and the lower floor of the cubicle 2 is used as an oil storage tank. I was 32.

[0004]

However, when the cubicle type high voltage power receiving equipment using the oil-filled transformer is arranged on the roof of a building, there are the following problems. That is, when the above equipment is placed on the roof of the building,
Rainwater accumulates inside the oil storage tank 32. Then, in order to drain the rainwater in the oil storage tank 32, the oil barrier 31
Although a drain hole 33 is formed in the
From 3, there is a risk that oil leaking from the oil-filled transformer together with rainwater may flow out of the oil storage tank 32. further,
The cable 4 connected to the power receiving and transforming equipment has a take-out hole 2
It is taken out from No. 4 and wired under the floor. However, since the underfloor of the cubicle 2 is surrounded by the oil dam 31,
When performing maintenance and inspection work of the cable 4 wired under the floor, or when adding equipment, a laborious work such as crushing and removing a part of the oil levee 31 is required.

The present invention has been made to solve the above-mentioned problems, and provides an oil spill prevention type cubicle that does not require a special oil-proof facility at the installation site, thereby providing a facility at the installation site. Also, the purpose is to simplify maintenance and inspection work.

[0006]

Therefore, according to the present invention, a floor of a cubicle for accommodating oil-filled substation equipment is formed in a pan shape with a bottom plate and a peripheral wall integrally raised from the periphery of the bottom plate. Making the volume larger than the volume of oil used in the power receiving and transforming equipment is a means for solving the above problems. Furthermore, by placing a cubicle whose floor is formed in a pan shape on a foundation arranged at intervals, it is possible to provide a space communicating with the outside between the floor and the foundation. It is used as a means to solve the problem.

[0007]

In the oil spill prevention type cubicle, since the floor is integrally formed in the shape of a pan, the floor is watertight. Further, since the floor portion has a volume larger than the volume of oil used in the power receiving and transforming equipment, the floor portion serves as an oil storage tank for oil leaking from the power receiving and transforming equipment. Therefore, it is not necessary to provide an oil storage tank under the floor of the cubicle. Moreover, the space under the floor portion formed in the shape of a pan is provided so as to communicate with the outside, so that the space under the floor portion of the cubicle is opened. Therefore,
When carrying out the work on the cable taken out from the cubicle and arranged under the floor, the work is carried out directly from the outside without any special treatment.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment will be described with reference to the sectional view of FIG. In the figure, 1 is an oil spill prevention type cubicle (hereinafter, simply referred to as cubicle) showing the first embodiment, and 3 is a base on which the cubicle 1 is placed. The foundation 3 is made of concrete or the like and is arranged at the four corners of the cubicle 2.

The structure of the cubicle 1 will be described. The cubicle 1 has a floor 11, a side wall 12 in four directions, and a roof 13 and is formed into a rectangular box. A door (not shown) is provided on the side surface portion 12.

The floor portion 11 is formed in a so-called pan shape having a shallow bottom with an upper opening by a bottom plate 11a and a peripheral wall 11b rising from the peripheral edge of the bottom plate 11a. The floor portion 11 formed in a pan shape is formed so that the volume thereof is larger than the volume of oil used in the power receiving and transforming equipment housed inside the cubicle 1. Further, the bottom plate 11a is provided with a take-out hole 14 for taking out the cable of the power receiving and transforming equipment housed inside the cubicle 1 to the outside of the cubicle 1. The floor portion 11 having such a structure is formed by welding, punching or the like of a single metal plate.

In the above structure, above the floor 11,
The side wall portion 12 is arranged, and the opening edge of the floor portion 11 and the side wall portion 12 are arranged.
Is connected to the bottom of. This connecting portion is formed watertight by interposing a sealing member (not shown) such as packing. Further, a roof portion 13 is arranged on the upper portion of the side wall portion 12, whereby the box-shaped cubicle 1 is formed.

When the power receiving and transforming equipment is housed in the cubicle 1, the cable 4 of the power receiving and transforming equipment is taken out from the take-out hole 14 formed in the floor 11 via the sealing member 5 such as a gasket.

In the cubicle 1 having the power receiving and transforming equipment housed therein as described above, the floor portion 11 is formed of a single metal plate, and the sealing member 5 is provided in the take-out hole 14 of the cable 4. It is arranged. Therefore, the floor portion 11 is kept watertight and becomes the oil storage tank A. Therefore, even if the oil-filled transformer is housed in the cubicle 1 and oil leaks from the oil-filled transformer, it is held in the oil storage tank A. further,
The volume of the floor portion 11 is formed to be larger than the volume of oil used in the power receiving and transforming facility. Therefore, even if all the oil in the oil-filled transformer leaks out, the leaked oil is all held in the oil storage tank A and does not flow out of the cubicle 1.

Next, a second embodiment will be described with reference to the sectional view of FIG. In the cubicle 1, as in the cubicle 1 of the first embodiment, the floor 11 includes the bottom plate 11a and the peripheral wall 1.
It is formed in a pan shape with 1b. The bottom plate 11a of the floor 11 is provided with a take-out hole 14 for taking out the cable 4.

In the cubicle 1 of the second embodiment, the opening edge 14a of the take-out hole 14 is raised to a height substantially the same as that of the peripheral wall 11b. Further, as in the case of the first embodiment, the floor portion 11 is formed by forming a single metal plate into a pan shape.

The side wall portion 12 and the roof portion 13 are arranged above the floor portion 11 in the above structure as in the case of the first embodiment, whereby the box-shaped cubicle 1 is formed.

When the power receiving and transforming equipment is stored in the cubicle 1, the cable 4 of the power receiving and transforming equipment is taken out from the take-out hole 14 formed in the floor 11 through the sealing member 5 such as caulking material. .

In the cubicle 1 of the second embodiment, the floor 11 serves as the oil storage tank A as in the first embodiment, and the leaked oil does not flow out of the cubicle 1.
However, in the second embodiment, the opening edge 1 of the extraction hole 14 is
Since 4a is raised to almost the same height as the peripheral wall 11b, the watertightness of the floor portion 11 becomes more reliable. Further, the cable 4 is not covered with oil due to the oil leaking from the oil-filled transformer.

[0019]

As described above, according to the structure of the cubicle of the present invention, the cubicle itself has a function of storing the leaked oil, so that the oil leaked from the power receiving and transforming facility can be reliably stored in the cubicle. Holds on the floor. For this reason, oil pollution can be suppressed to a minimum, and it is not necessary to install an oil barrier such as concrete under the floor of the cubicle. Therefore, the equipment can be simplified. Moreover, since the underfloor of the cubicle is opened, the flexibility of the maintenance and inspection work and the wiring state after installation of the cable pulled out under the floor is increased, and the work at the time of facility expansion can be simplified.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment of the present invention.

FIG. 3 is a diagram showing a conventional cubicle and its arrangement state.

[Explanation of symbols]

 1 Oil spill prevention type cubicle 11 Floor 11a Bottom plate 11b Perimeter wall 12 Side wall 13 Roof

Claims (4)

(57) [Scope of utility model registration request] 1. An electric power receiving and transforming facility is stored,
In a cubicle that forms a box shape with a floor portion, a side wall portion, and a roof portion, the floor portion is formed in a pan shape with a bottom plate and a peripheral wall integrally raised from the peripheral edge of the bottom plate, An oil spill prevention type cubicle characterized in that its volume is larger than the volume of oil used in the power receiving and transforming equipment. 2. The oil spill prevention type cubicle according to claim 1, wherein a bottom plate of the floor has a lead-out hole for a cable of the power receiving and transforming equipment, and the lead-out hole takes out the cable. In the state, a sealing member for maintaining water tightness between the extraction hole and the cable is arranged, and an oil outflow prevention type cubicle. 3. The oil spill prevention type cubicle according to claim 1, wherein a bottom plate of the floor portion is provided with a lead-out hole for a cable of the power receiving and transforming equipment, and the lead-out hole has at least a peripheral edge of the floor. An oil spill prevention cubicle characterized by being raised to the same height as the peripheral wall of the section. 4. An electric power receiving and transforming facility is stored,
A cubicle comprising a floor portion, a side wall portion, and a roof portion formed in a box shape, and the floor portion formed in a pan shape by a bottom plate and a peripheral wall integrally raised from a peripheral edge of the bottom plate, wherein The cubicle is an oil spill prevention type cubicle characterized in that the cubicle is placed on a foundation arranged with a gap, so that a gap communicating with the outside is formed between the floor and the foundation. .