JPS6357585B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for installing a ground-mounted or floating package type power generation equipment that can be transported by floating.

Traditionally, for example, when constructing a thermal power plant,
Starting with the civil engineering work at the power plant construction site, construction of the foundation for the turbine generator, construction of the turbine generator building, construction of the boiler steel frame, raising the boiler drum, installation of various equipment, etc., civil engineering, and construction of the main components of the turbine generator. It was installed as construction work on the building progressed. At sites with poor local installation conditions, these installation works require a long period of time and have a large impact on power plant construction prices. Furthermore, it is important that each element of the power plant's component equipment be transported and delivered in time for installation, which increases transportation costs. In particular, securing skilled engineers is a problem for power plants constructed in developing countries. In response to this, recently power plant components such as boilers, turbines, generators, transformers, and their auxiliary equipment, as well as turbine generator buildings, have been installed on bontoons that can be floated and transported within the factory as one huge power generation package. After manufacturing and assembling, this power generation package is transported by submersible barge to near the power plant building site using waterways such as sea and rivers.
The pontoon will be towed to the installation site where the basic civil engineering work has been completed, and placed on the ground by injecting water into the ballast tank installed on the pontoon.The surrounding area will be backfilled, and electricity, water, equipment, etc. outside the power generation package will be removed. A so-called package-type power generation facility is being considered, which can be connected to the power generation facility, greatly shortening the on-site installation period, and producing power generation facilities with sufficient quality control within the factory.

The outline of the package type power generation equipment will be explained below using the drawings. Figure 1 is a partially cutaway plan view, Figure 2
1 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a sectional view taken along the line - in FIG. 1. In the figure, 1 is a pontoon, which has a ballast tank 1' and is manufactured in a dock in a factory like a normal ship. On top of this pontoon 1 are main equipment such as the boiler 2, turbine 3, generator 4, transformers 5, 6, and 7, which are the components of the packaged power generation equipment, as well as forced ventilation, which is the auxiliary equipment. machine 8, chimney 9, condenser 10, circulating water pump 11,
De-alerator 12, compressor equipment 13,
Water supply pump equipment 14, and hydrogen gas generator 1
5, a storage battery facility 16, a control room 17, a crane and hoist facility 18, an emergency power generation facility 19, etc. are installed, forming one huge power generation package P. In addition, 20 in the figure is a turbine generator building for protecting these devices. Each of these devices constituting the power generation package P is manufactured in a factory in a short period of time under strict control, and then assembled and mounted on the pontoon 1. Figure 4 shows the power generation package P
FIG. 2 is a diagram showing the state of transportation on water, in which P is a power generation package and B is a submersible barge on which this 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 P is towed by the towing boat T to a location close to the power plant construction site, and is connected to external equipment in a grounded or floating state. In this way, the power generation package P and the turbine generator building housing it can be manufactured and assembled all at once at any location of the manufacturer, and can be installed anywhere in the world as long as it can be transported by water.

Moreover, the package-type power generation installation described above does not have to be fixedly installed on land, but can be fixed in a floating state on water and used as a mobile power station that transmits the generated power over land for a desired period.

On the other hand, recently, for the following reasons, it has been considered to install a plurality of power generation packages of this type to construct a power plant.

(a) The capacity of a power plant is determined by its relationship with normal demand, and it is desirable that the generated electricity be consumed as close to the power plant as possible in the demand area. However, this demand is not always constant and varies greatly depending on the economic situation of the region and the lifestyles of the people living there. The mission of an electric power supplier is to supply electricity in a sufficient manner to meet this demand (if the demand increases, the supply amount must also increase in response).

(b) When constructing a power plant, the environmental impact on the local area should be fully considered, and construction costs should be kept low, transmission costs should be reduced, and fuel etc. should be easily transported. It is necessary to easily construct water facilities such as condenser cooling water and fresh water for boilers and obtain a sufficient amount of water, to find a good ground that will not cause uneven subsidence of the foundation ground, and to prevent water supply and storm surge. It is necessary to select a location where there is little risk of drifting sand, etc. For this reason, power plants cannot be built anywhere.

(c) Needless to say, power plants require large amounts of fuel and cooling water. Therefore, these fuel equipment, cooling water equipment, etc. also play a large role in the construction price of the power plant. Furthermore, the same applies to substation equipment, power transmission line equipment, etc. for transmitting electricity generated at power plants to demand areas. If these facilities are distributed through the distributed arrangement of power plants, the above condition (b) will no longer be satisfied. In addition, housing facilities for power plant operators are extremely difficult. In other words, when power plants are decentralized, these power plant ancillary facilities become very large.

(d) It is more advantageous in terms of costs to operate a power plant with a small number of people. There is a big difference in terms of safety between operating multiple units with the same number of operators and operating a distributed power plant. In particular, this type of packaged power generation equipment is often constructed in developing countries, but in the case of power plants constructed in developing countries such as those mentioned above, the number of skilled engineers including these operators is high. Difficult to secure.

(e) Even if we limit ourselves to package-type power generation equipment, as mentioned above, the components necessary for assembly and installation are manufactured at the factory under strict quality control.
It will be transported and installed near the power plant construction site by a submersible transport barge. The size of this packaged power generation facility is determined by the size and capacity of the submersible transportation barge, and it does not have the capacity to load multiple units at once.

(f) In cases where large-capacity power is required, a single power generation package is insufficient in capacity, so in order to meet the demand, multiple units must be manufactured and each one independently operated. Sometimes it has to be transported.

However, when installing multiple power generation packages equipped with turbine generator buildings,
Since each power generation package carries a turbine generator building independently and is transported, there is a problem that even if these are combined into one common turbine generator building, it is not possible to organize them.
This is because, apart from ensuring safe operation as a power plant with multiple units installed, it is impossible to monitor the entire power plant, resulting in extremely inefficient maintenance and inspections. That is, a skilled engineer must be assigned to each package, and independent maintenance and inspection equipment is required for each package. Therefore, these technical solutions are strongly desired.

The present invention was made in view of the above-mentioned problems, and enables safe operation even in a system where multiple power generation packages are installed together, and allows for operation and maintenance inspection by a small number of skilled engineers. It is an object of the present invention to provide a method for installing package type power generation equipment that can easily perform the following steps.

Therefore, in order to achieve the above object, the method for installing a package type power generation equipment according to the present invention is such that when a plurality of power generation packages covered with at least a turbine generator building are installed, a turbine generator on each power generation package is installed. The building is equipped with an overhead crane running rail perpendicular to the turbine generator shaft.
Only the first generation package is equipped with a crane,
After the power generation package arrives at the planned construction location of the power plant,
The structure is such that the partition walls between adjacent buildings are removed, a plurality of buildings are interconnected, and the overhead crane travel rails are also interconnected.

The present invention will be described below with reference to an embodiment shown in FIGS. 5 and 6. Figure 5 is a cutaway diagram showing the state in which the walls of the adjacent turbine generator buildings are removed and the buildings are interconnected after the two power generation packages P ₁ and P ₂ arrive at the planned construction location of the power plant. 6 is a plan view, and FIG. 6 shows a sectional view taken along the line - in FIG. 5 in order to explain a set of shared overhead traveling cranes. Here, the two power generation packages are P ₁ and P ₂ , and the equipment configured on the pontoon 1 is the same equipment as described above.

Normally, when two power generation package cages are installed, each power generation package is housed independently in the turbine generator building, so the turbine generator building has two sets.
As mentioned earlier, it is extremely inefficient not only in the safe operation of the power plant but also in monitoring, maintenance and inspection of the entire power plant. Therefore, in the embodiment of the present invention, as soon as the second power generation package P ₂ arrives at the planned power plant construction location, the first power generation package P ₁ is moved as shown with diagonal lines in FIGS. 7 and 8. The adjacent wall surface 20B is removed, and along with this removal, the power generation package _P1 and the wall surface 20A are also removed, and the power generation package _P1 and the power generation package _P2 are connected and connected to form a combined turbine generator building 20. At the same time, the overhead crane running rails 21A and 21B provided in each turbine generator building 20 are connected and combined to form one shared overhead crane running rail 21, as shown in FIG.

In such a configuration, one common overhead crane travel rail 21 can run continuously over the power generation packages P ₁ and P ₂ , and therefore all the equipment can be connected to the power generation packages P ₁ and P ₂ at once. Maintenance and inspection can be carried out.

It goes without saying that the present invention is similar to the case where three, four, etc. power generation packages are installed, and the adjacent walls are removed and connected and connected to form a single generator building, so that each one runs smoothly. You can expect the same result by combining the rails.

As explained above, according to the installation method of the package type power generation equipment of the present invention, the following effects can be obtained.

(a) By connecting and connecting the overhead crane travel rails, one power generation package can be
Maintenance and inspection can be carried out using the overhead crane, making it unnecessary to provide independent maintenance and inspection equipment as in the past.

(b) By removing adjacent walls of the power generation package, monitoring of the entire power plant becomes easier.

[Brief explanation of drawings]

Figure 1 is a partially cutaway cross-sectional view of the power generation package assembled on a pontoon, and Figure 2 is a - of Figure 1.
A sectional view taken along the line, Fig. 3 is - of Fig. 1.
4 is a diagram for explaining an example of transportation of the power generation package, FIG. 5 is a plan view of two power generation packages installed to form one power plant, and FIG. 6 is a cross-sectional view taken along the line. The figure is a sectional view taken along the line - in FIG. 5, and FIGS. 7 and 8 are diagrams for explaining an example of a wall surface to be removed. 1...Pontoon, 1'...Ballast tank,
2... Boiler, 3... Turbine, 4... Generator, 20... Turbine generator building, P ₁ , P ₂ ...
Power generation package, B...Barge, 20A, 20B
...Wall surface, 21...Shared overhead crane running rail.

Claims (1)

[Claims] 1. In the installation method of ground-mounted or floating package power generation equipment that can be transported by floating, when multiple power generation packages covered with at least a turbine generator building are installed, the turbine generator building on each power generation package is An overhead crane running rail is installed perpendicular to the turbine generator axis, and only the first power generation package is equipped with a crane. After the power generation package arrives at the planned construction location of the power plant, the barrier between adjacent buildings is removed. A method for installing packaged power generation equipment, which is characterized by interconnecting multiple buildings and also interconnecting overhead crane travel rails.