JPS6252525B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a packaged power generation facility capable of floating transportation or power generation.

Traditionally, the construction of a thermal power plant starts with civil engineering work at the power plant construction site, then constructs the foundation for the turbine generator, constructs the turbine building, constructs the boiler steel frame, raises the boiler drum, and installs each piece of equipment. The main components were being installed in line with the progress of civil engineering and turbine building construction. At sites with poor local installation conditions, these installation works require a long period of time.
And it has a big impact on power plant construction prices.
Furthermore, it is important to transport and bring in each element of the power plant's component equipment in accordance with the installation period, which increases transportation costs. Particularly for power plants built in underdeveloped areas, securing skilled engineers is also an issue. In contrast, recently, power plant components such as boilers, turbines, generators, transformers, and their auxiliary equipment, as well as the turbine building, have been installed on a floatable platform, and manufactured and assembled in one huge package in a factory. , this package was transported offshore to near the power plant construction site by a submersible barge.
It is transported in one piece using a waterway such as a river, towed to a pre-prepared installation location, and placed on the ground by injecting it into the ballast tank installed on the ship's platform.
After backfilling the surrounding area, electricity and water outside the package,
A package-type power generation plant system is being considered, which greatly shortens the on-site installation period by connecting to fuel equipment, etc., and allows the power generation equipment to be manufactured in-house with sufficient quality control.

The package type power generation equipment will be explained below using the drawings. Figure 1 is a partially cutaway plan view, Figure 2 is a sectional view (side view) taken along the straight line in Figure 1, and Figure 3 is a cross-sectional view (side view) taken along the straight line in Figure 1.
The figure is a cross-sectional view (front view) taken along the straight line - in Figure 1.
It is. In the figure, reference numeral 1 denotes a ship's platform, which has a ballast tank 1' and is manufactured in a dock in a factory like a normal ship. Main equipment such as generator 4, transformers 5, 6, 7, etc., and their auxiliary equipment such as forced draft fan 8, chimney 9, condenser 1
0, power plant including circulating water pump 11, diarerator 12, compressor equipment 13, water supply pump equipment 14, hydrogen gas generator 15, storage battery equipment 16, control room 17, crane and hoist equipment 18, emergency power generation equipment 19, etc. Most of the component equipment is mounted and configured as one huge package P.
Reference numeral 20 in the figure is a turbine generator building for protecting these devices. Each of these devices constituting the power generation package is manufactured in a factory in a short period of time under strict control, and then assembled and mounted on the ship's platform 1. FIG. 4 is a diagram showing a state in which the power generation package P is transported on water. In the figure, P is the power generation package, and B is a submersible barge on which the power generation package P is mounted. Further, T is a towing boat for towing the submersible barge B, and S is a waterway, such as the sea. In this way, the power generation package is towed close to the power plant construction site by the towing vessel T. In this way, package-type power generation plants can be manufactured and assembled in bulk at the manufacturer's desired location, including the power generation plant equipment and the building that houses it, and can be installed anywhere in the world that can be transported by water. .

It is also clear that the power generation package described above can be used as a mobile power station that does not have to be fixedly installed on land, but is fixed while floating on water, and transmits the generated power to land for a predetermined period of time.

However, in order to configure the package-type power generation equipment in a compact form, it is necessary to mount and install the oil-immersed transformer, which has conventionally been installed outdoors, inside the package. In the past, it was not possible to install oil-immersed transformers inside buildings because it was difficult to solve various technical problems such as effective space usage, fire prevention, soundproofing, and effective maintenance and inspection work. It is.

In view of the above-mentioned problems, the present invention mounts and installs an oil-immersed transformer, which is a component of the package-type power generation equipment, inside the package, thereby making effective use of space while maintaining fire prevention and soundproofing effects. The object of the present invention is to obtain a package-type power generation facility that allows maintenance, inspection, and disassembly work to be effectively performed.

Therefore, a transformer room is provided to house the oil-immersed transformer, and running rails for trolley-type chain blocks for maintenance, inspection, and disassembly are installed near or above the high-voltage bushings, low-voltage bushings, and coolers of the transformer. The structure is such that even if multiple transformers are housed in the same transformer room, one set of trolley type chain blocks for each type of lifting capacity is required.

The present invention will be described below with reference to embodiments shown in FIGS. 5 to 8.

In the figure, 5 to 7 are transformers, 20 is a generator building, 21 is a transformer room configured as a part of the generator building, 22 is a trolley type chain block, and L
is the running rail of the trolley type chain block, H
is a hook provided for pulling out the transformer neutral point bushing.

Normally, when a transformer, which is a component of packaged power generation equipment, is to be housed and installed in a packaged building, the transformer is placed in a sealed transformer room to maximize the effectiveness of soundproofing and fire prevention equipment. However, because a complete set of power generation equipment is installed in the limited space of the package, the transformer room itself is complex and has a minimum capacity. Also, depending on the layout, multiple transformers may have to coexist in this complex and minimal capacity transformer room.
In addition to maintenance and inspection, disassembly and inspection work is much more difficult than when it was installed outdoors. In the worst case, disassembly and inspection work is often impossible. Furthermore, in order to solve this problem, a large number of hooks will be required not only on the ceiling and walls of the transformer room but also outside the transformer room. In particular, when removing bushings, etc., it is necessary to pull them out perpendicularly to the surface on which the bushings are fixed, that is, perpendicular to the surface on which the bushings stand. A total of 7 or more hooks, including 3 bushings and neutral point bushings, will be required. Furthermore, if you need to lift a cooler for a transformer, it will take 10 to 10 hours for one transformer.
You will need more than one hook. Furthermore, these hooks need to be installed in accordance with the weight of the bushings and coolers to be lifted, and there is a risk of an accident depending on the improper handling of the attached hooks. Furthermore, when a plurality of transformers are housed in a transformer room, a huge number of hooks are required. Therefore, the present invention provides a transformer room 21 in which all the transformers 5 to 7, or a part of these, are housed in the package, and installs the transformers in this room. For maintenance and overhaul inspection, there should be installed near or above the high pressure bushing and low pressure bushing cooler of the
Traveling rail L for trolley type chain block
(L ₁ to _{L 12} ), and fixing hooks H (H ₁ to _{H 2} ) are provided in locations where rail installation is difficult, at least on or near the neutral point bushing of each transformer. The chain block 22 is structured so that one set for each rated weight is sufficient. If such a structure is used, for each bushing or cooler that requires disassembly and inspection, select a chain block according to the weight to be lifted, using a traveling rail installed near or directly above it. If multiple transformers are installed, disassembly and inspection can be carried out without any problem. Needless to say, although it has been described that one set of chain blocks 22 is prepared for each rated weight, there is no problem in preparing one set of chain blocks 22 having the maximum capacity.

As explained above, if the present invention is used, the oil-immersed transformer, which is a component of the package-type power generation equipment, is mounted and installed inside the package and is housed in the transformer room, so space can be used effectively. Not only does the fire prevention and soundproofing effect as described above be maintained, but the provision of the running rail and chain block also has the effect of making maintenance, inspection and disassembly work more effective.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway sectional view of the power generation package assembled on the ship's platform, and Figure 2 is a straight line from Figure 1.
3 is a cross-sectional (front) view along the straight line - in FIG. 1, FIG. 4 is a diagram for explaining an example of transportation of the power generation package, and FIG.
6 and 7 are diagrams for explaining the installation of the transformer, and FIG. 8 is a diagram for explaining the chain block. 1...Ship, 1'...Ballast tank, 2...
Boiler, 3... Turbine, 4... Generator, 5~
7...Transformer, 20...Generator building, 21...Transformer room, 22...Chain block, L...Chain block running rail, H...Hook, P...
Power generation package, B...barge.

Claims (1)

[Claims] 1. In packaged power generation equipment capable of floating transportation or floating operation, at least one of the oil-filled station transformer, oil-filled starting transformer, and oil-filled main transformer is installed in a sealed transformer room provided in the generator building. The high-voltage bushing, low-pressure bushing of the transformer, and the running rail for the trolley-type chain block for maintenance and overhaul of the water-cooled cooler are installed on the upper structural surface of the transformer room above the cooler. , a fixing hook is provided in a part of the generator building, and at least on the upper structural surface of the transformer room above the bushing of the transformer, and the chain block in the entire transformer room is connected to the high-voltage bushing, low-voltage bushing, A packaged power generation facility characterized by having at least one set of water-cooled coolers with the maximum capacity when individually suspended.