JPS6045730B2 - How to transport and install packaged power generation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting and installing packaged power generation equipment that can be transported by floating.

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. Civil engineering for installation and other major components,
It was installed as construction progressed on the turbine building.

At sites where local installation conditions are poor, these installation works require a long period of time and have a significant impact on the power plant construction price. 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 turbine buildings, have been installed on floating platforms, manufactured and assembled in one huge package in a factory. This package is transported by a submersible barge to near the power plant construction site using waterways such as sea and rivers, and towed to the installation site where the basic civil engineering work has been completed. By injecting water into the tank, it is placed in the ground, the surrounding area is backfilled, and then connected to electricity, water, fuel equipment, etc. outside the package, which greatly shortens the on-site installation period and allows for thorough quality control within the factory. A packaged power generation plant system is being considered, which allows for the production of sophisticated power generation equipment. 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 cross-sectional view (side view) taken along the line ■-■ in Figure 1, and Figure 3 is a cross-sectional view (side view) taken along the line ■--■ in Figure 1. (front view). 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 a generator 4, transformers 5, 6, 7, etc., and their auxiliary equipment such as a forced draft fan 8, a chimney 9, a condenser 10, a circulating water pump 11, a dealerator 12, and a compressor equipment 13 , water supply pump equipment 14, and hydrogen gas generator 1
5. Most of the power plant components such as storage battery equipment 16, control room 17, crane and hoist equipment 18, emergency power generation equipment 19, etc. are 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 the state of water transportation of the power generation package P. In the figure, P is the power generation package, and B is the power generation package P.
It is a submersible barge for carrying. Further, T is a towing boat for towing this 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, packaged power generation plants can be manufactured and assembled together at the manufacturer's desired location, including the power generation plant, plant equipment, and the building that houses them, and can be installed anywhere in the world that can be transported by water. Can be done. Conventional transportation, landing, and installation methods will be explained using FIGS. 5 to 10.

In the figure, SB is the coastline, and H is the area extending from the sea beyond the coastline SB to the planned installation site PY.The water depth is deeper than the planned installation site PY, and foundation work is being carried out at the planned installation site PY. It is strained. Note that the planned installation location JPY indicates four sets of power generation packages as an example. The power generation package P floating on the sea is towed by towing vessels Tl, T2, and T3 to near the entrance of the trench H as shown in Fig. 5, and is then towed by a winch installed on land as shown in Figs. 6 and 7. It is drawn into the trench H by W1-4W4. Figures 8 to 10 each show a cross section taken along the broken line It is a figure explaining the method of attaching. In the figure, HWL and L
WL is the high water level and low water level at high tide and low tide, respectively. Regardless of the tide, the package P is pulled into the deep ditch to the position shown in Figure 7, and if it is low tide, the package P is pulled further into the ditch by a winch (not shown) after waiting for high tide. The package P is pulled in to the position Q indicated by the dot-dashed line at the planned facility location PY shown in FIG. FIG. 8 shows the package P pulled into the trench H during low tide, and FIG. 9 shows the package P pulled into the intended installation position using high tide.
The package P, which has been pulled in to the target position in this manner, sinks by introducing water into a bar ballast tank provided on the ship's platform, and lands on a pre-constructed foundation as shown in FIG. 10. Similarly, when the second to fourth units (not shown) are placed on the floor, the area around the trench H provided for towing and the planned installation location PY is filled back, and the installation of the package is completed. However, a series of complex operations and techniques such as transportation, landing, and installation require advanced technology, and one mistake may lead to failure to achieve the objective.

In particular, when conveying water to the ballast tank during landing, if it is not carried out in a well-balanced manner, it may lead to overturning or damage due to unbalanced landing. Although it is related to the amount of water being poured, generally the sinking speed is fast, so there is a risk that the landing error will be large. Therefore, solving these technical problems associated with transportation and installation is one of the factors that determines the success or failure of packaged power generation equipment, and there has been a strong demand for solutions. In view of the above-mentioned problems, the present invention has been developed to
It provides a solution to a series of techniques and complex operations in installation.

Therefore, as a transportation and landing method, the combination of water introduction to the ballast tank and the natural phenomenon that occurs during the transition from high tide to low tide, that is, the ebb tide, is used to ensure safe and accurate transportation and landing. The present invention will be explained in detail below. The method of pulling the power generation package P to the target ditch H is the same as the method described above. However, although the equipment mounted on the platform 1 of the power generation pancase P that has been brought in for movement to the planned location d is arranged so that it is sufficiently balanced, it is difficult to achieve perfect balance, and there may be some The slope is unavoidable, and the slope must be leveled. Therefore, in order to correct the attitude of the power generation package P at the predetermined position of the trench H, water is introduced to an appropriate ballast tank according to the inclination. However, this amount of water is not so large as to cause the power generation package P to sink, but rather to make the power generation package P horizontal. Furthermore, in order to correct its posture, the power generation package P, which has finished conveying water and is now horizontal,
The pulling from the fixed position in the moat H to the unit installation PY is carried out using high tide, that is, high tide. Furthermore, the power generation package P has been pulled in to the planned installation location PY.
conducts water to the ballast tank for settling purposes. In this case, this water conveyance will be carried out carefully and safely in order to completely eliminate rollover accidents, damage, etc. due to unbalanced water conveyance. When the water is introduced into the ballast tank, the power generation package P starts to sink naturally, but the power generation package P does not sink to the ground due to this water flow, but sinks to an appropriate depth, and the landing occurs between high tide and low tide. To make use of a changing natural phenomenon, that is, the ebb tide, to naturally, slowly, accurately and safely submerge the floor to a pre-constructed installation position. As mentioned above, the majority of the amount of sinking of the power generation package P required for implantation is, for example, 5
0 to 80% is submerged by conveying water to the ballast tank, and the final landing is made to settle gradually using the tidal difference, compared to landing by only conveying water to the ballast tank.
It does not require complicated operations, and also solves the problem that accurate and safe landing was impossible due to the fast sinking speed.

In addition, compared to landing using only the tidal difference, it takes too much time for the sink to sink, which causes various problems, such as the disadvantage that the power generation package P must be fixed and floated at the landing position for a long time. resolved. After landing, water will be introduced into the ballast tank to prevent it from resurfacing during the next low tide or high tide. For fixing, water is drained from the ballast tank while filling the area around the power generation package P, and solid matter such as soil, sand, concrete, or mortar is poured into the ballast tank for final fixing. In the above embodiment, a case has been described in which the power generation package P is corrected after being drawn into the trench H, but this operation is performed depending on the degree of inclination of the power generation package P, and is not scheduled. This is not necessary as long as there is no problem in bringing the power generation package P into the installation location PY. In addition, above, we explained the submerged floor using the tidal difference and the water conveyance to the ballast tank, but for example, there are differences in the height of water in rivers and lakes, and it is not possible to have a ballast tank in the power generation package. Needless to say, this method can be adopted if

As described above, according to the present invention, even in the transportation and installation of extremely large and heavy objects such as packaged power generation equipment, the transportation, single-bed, and installation can be carried out safely and accurately.

[Brief explanation of drawings]

Figure 1 is a partially cutaway sectional view of the power generation package assembled and manufactured on the ship's platform, and Figure 2 is a cross section along the straight line ■-■ in Figure 1 (
Figure 3 is a cross-sectional (front) view taken along line 1 in Figure 1, Figure 4 is a diagram for explaining an example of transporting a power generation package, Figures 5 to 10 are power generation FIG. 3 is a diagram for explaining a method of transporting, landing, and installing a package. 1...Ship, 1''...Ballast tank, 2...Boiler, 3...Turbine, 4...
... Generator, P ... Packaged power generation equipment, B ... Barge, PY ... Planned installation location, H ... Moat division.

Claims (1)

[Claims] 1. A power generation package with at least a boiler, a turbine, and a generator installed as components of a thermal power plant is floated on the surface of the water on a ballast tank and a buoyant platform, and a submersible barge is submerged and floated onto it to generate electricity. The power generation package is then transported by water to near the construction site, the barge is submerged, the power generation package is brought to the surface again, it is introduced into the trench leading to the planned installation site prepared in advance, and the water is guided to the ballast tank and its position is leveled. The ballast is introduced into the planned installation location using high tides, and then guided into the ballast tank and allowed to sink.The final landing is carried out using the ebb tide, and after the ballast tank is drained, the ballast is removed. A method for transporting and installing packaged power generation equipment characterized by injecting solid matter into a tank.