JPH0231562B2 - ROJOSETSU CHIGATAHENATSUKITO - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a road-mounted transformer tower that is in harmony with the surrounding environment and that improves workability in new installation and replacement of transformers, wiring connections, etc.

According to conventional road-mounted transformer towers, when a transformer is installed, the height from the ground tends to be 2 m or more due to the external dimensions of the transformer. However, in order to harmonize with the surrounding environment, which has recently been proposed, it has been requested that the height of road-mounted transformer towers be kept to about 1 meter from the ground. One possible way to limit the height is to install the transformer semi-underground. An example of a transformer installed semi-underground is the transformer tower shown in Japanese Patent Publication No. 15047-1988 ``Housing for Semi-Embedded Electrical Equipment''. This transformer tower has a structure in which a plurality of annular members are stacked on top of each other with spacing members interposed between them on top of a buried storage chamber, and the transformer inside is cooled by the air that enters through the gaps. .

However, with this transformer tower, when installing, replacing, or wiring a transformer inside the tower, multiple annular members must be removed, and after work, the annular members must be stacked and fixed with bolts, etc. Therefore, workability is poor, and furthermore, there is a problem that the removed annular member becomes a hindrance to work, traffic, etc. during the work.

Instead of using a plurality of annular members, a structure in which the case of the tower is warped and removed may be considered, but the same problem as described above occurs.

In view of the above, the present invention aims at assembling a frame on a pit in order to harmonize with the surrounding environment, avoid interfering with work, traffic, etc., and improve workability in installing transformers, wiring, etc. , to provide a road-mounted transformer tower in which a plate member can be attached to and detached from the frame.

That is, according to the road-mounted transformer tower of the present invention,
A pit is formed on the road and has a depth that allows power distribution equipment such as transformers and switches to be buried to a predetermined height.The frame is fixed to the opening edge of the pit, and when working on power distribution equipment, the power distribution equipment is It is formed by a combination of bone members that can be reached, and the plate member is fixed to the frame so that the power distribution equipment is closed and housed in the pit.

Hereinafter, the road-mounted transformer tower of the present invention will be explained in detail.

Figures 1A and 2B and 2A and 2B show an embodiment of the present invention. Figures 1A and 2B show the tower alone, and Figure 2A and 2B show the construction at the site. That is, the transformer tower housing tower 3 collectively houses a frame 1 formed into a rectangular parallelepiped and fixed to the foundation 9 at the opening edge of the transformer housing pit 12, and a primary side branch opening/closing part, and has a pressure relief mechanism at the top. 2a and a side plate 2b that can be opened and closed to operate a disconnector, etc.
(explosion-proof structure with an explosion-proof lock), side plates 3a, 3b, 3c and a top plate (or lid) 3d configured in a three-sided breakaway type. The order of assembly of the transformer housing tower 3 is that after installing the branch switchgear housing tower 2, installing the transformer, and completing the wiring work, the side plates 3a, 3b, and 3c are fitted to the frame 1 in this order and assembled. Thereafter, as shown in FIG.
b, 3c are made non-removable and are locked via a keyhole 4. Frame 1 is the first
Although not limited to what is shown in Figure A, when the prefabricated side plates 3a to 3c and the prefabricated top cover 3d are removed, work obstacles that obstruct the installation, replacement, and associated wiring work of the transformer are removed from the surrounding area. , any structure may be used as long as it has a structure that allows the operator to easily perform the above-mentioned work through the frame 1.

To explain based on the on-site configuration as shown in Fig. 2 A and B, the branch switching accommodation tower 2 consists of a molded disconnect switch 5, a molded cutout 6, a molded bus bar 7, and a direct connection type cable head 8. There is a pressure relief mechanism 2 on the top.
a, an opening 1 provided in the base 9 arranged around the pit opening at the bottom and leading to the hand hole 10;
6, and the transformer housing tower 3 consists of two pits 12 which have a drainage groove 11 (through which the cable passes) that communicates with the hand hole 10, and which are juxtaposed via a sound and vibration isolation mechanism 13. Transformer 14, 15
The above-mentioned side plates 3a, 3b, 3
c, the upper plate 3d is fixed to the frame 1. The depth of the pit 12 is 350 mm from the ground level when the transformers 14 and 15 are installed.
It is desirable that it be formed to a certain height.

According to the present invention described above, the frame 1 is fixed to the foundation 9 with anchor bolts (not shown), the primary side branch opening/closing part is attached to the branch opening/closing storage tower 2,
After accommodating the transformers 14 and 15 and completing the wiring work, fit the side plates 3a, 3b, and 3c onto the frame 1 in this order.
After assembly, the upper plate 3d is covered and locked. Therefore, it is possible to extremely easily insert and remove the transformer, assemble it, and connect the wires. transformer 1
4 and 15 are installed in the pit 12 at the above-mentioned predetermined depth from the ground, the height of the road-installed transformer tower can be suppressed to 1 m or less, thus achieving harmony with the surrounding environment.

As explained above, according to the present invention, the transformer housing tower is installed semi-underground and has a prefabricated structure, so that it harmonizes with the surrounding environment, the removed side panels do not interfere with traffic, etc. Since work can be done through the frame, it is possible to improve the workability of installing, replacing, and wiring the transformer.

[Brief explanation of drawings]

FIGS. 1A and 1B show one embodiment of the present invention, A is an exploded view, B is an assembled view, and FIGS. is a sectional view, and b is a side view taken along the line shown in a. Explanation of symbols, 1... Frame, 2... Branch switchgear housing tower, 3... Transformer housing tower, 3a, 3b, 3c...
Side plate, 3d...Top plate, 4...Keyhole, 5...Disconnector, 6...
cutout, 7... bus bar, 8... cable head,
9...Foundation, 10...Handhole, 11...Drainage ditch,
12... Pits, 13... Soundproofing and seismic isolation device, 14, 15
...Transformer.

Claims (1)

[Scope of Claims] 1. A pit formed on the road with a depth for inserting power distribution equipment such as a transformer and a switch to a predetermined height; A frame formed by a combination of bone members that allow access to the power distribution equipment from the outside during work such as installation, replacement, and wiring of equipment; A road-mounted transformer tower comprising a side plate and a top plate that are closed and housed in the pit.