GB2052592A

GB2052592A - Package Type Power Plant

Info

Publication number: GB2052592A
Application number: GB8008820A
Authority: GB
Original assignee: Tokyo Shibaura Electric Co Ltd
Current assignee: Toshiba Corp
Priority date: 1979-03-19
Filing date: 1980-03-14
Publication date: 1981-01-28
Also published as: DE3010232C2; FR2452196B1; JPS55123593A; GB2052592B; DE3010232A1; FR2452196A1

Abstract

A package type power plant comprises generating packages (10), formed by mounting main generating machinery (12, 14, 16, 18) and accessory machinery (20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42,) on a first platform (11) capable of floating for transportation; and at least one accessory equipment package (60, 64, 72, 82, 86, 90) formed by mounting accessory equipment (62, 66, 68, 70, 74, 76, 78, 80, 84, 88, 92, 94, 96) for operating in cooperation with said generating packages (10) on at least one platform (51). The packages (60, 64, 72, 82, 86, 90) are transported to the construction site of a power plant through a water channel and are electrically and mechanically connected to form a single power plant. <IMAGE>

Description

SPECIFICATION Package Type Power Plant This invention relates to a package type power plant which comprises generating package, each having a first platform capable of floating for transportation, main machinery, and accessory machinery mounted on the first platfrom for operating in cooperation with the main machinery; and accessory equipment for operating in cooperation with the generating packages.

A conventional method for constructing a thermal power plant proceeds with several stages in a predetermined order: construction work at a site, the building of a turbine generator foundation, the building of a structure for the turbine generator, the construction of an iron frame for a boiler, the lifting of the boiler drum, and the installation of various pieces of machinery. However, the installation work takes extra time at a site where the conditions of installation are bad, disadvantageously raising the construction cost of the power plant. The constituent machinery for the power plant must also be transported in accordance with the installation scheduule, and it is normally impossible to transport these pieces at the proper time. Thus, transportation of the building material is usually extremely costly.Moreover, it is especially difficult to secure the required number of skilled engineers in underdeveloped areas, so that the construction period tends to be prolonged. In order to solve these problems, there has been proposed that a boiler, a turbine and a generator (which will be hereinafter referred to as a turbine generator for brevity), a transformer and accessory machinery to operate in cooperation with this machinery be manufactured at a factory and mounted on a platform capable of floating for transportation to produce one big generating package. The generating package is then placed on a divable barge and transported to a place near the construction site through an available water channel.The generating package is unloaded from the barge and is used while floating, or transported to a predetermined position through a suitable channel and the surrounding water channel is filled in and reclaimed. In either case, the generating package is operated as a power plant after it is connected to electricity, water and fuel facilities on land. This method is advantageous in that the installation time at the site is considerably shortened, and the construction cost of the power plant is significantly reduced since various pieces of machinary are electrically and mechanically connected to a considerable extent and are transported at one time.

However, even if the generating package is installed in the above-mentioned manner, accessory equipment is required for operating in cooperation with the generating package if the functioning of the generating package is to be utilized to the maximum degree. This accessory machinery normally includes a substation, water supply equipment, water purifying equipment, fuel storage equipment, a diesel generator, and a service building for controlling the power plant.

However, when these pieces accessory equipment are individually constructed on land as in the conventional case, the construction period is prolonged, thereby nullifying the advantage of installing the generating package within a short period of time.

One of the objects of this invention is to provide a package type power plant comprising a generating package to be floated and accessory equipment which may be easily installed at a site.

To the above and other ends, this invention provides a package type power plant wherein at least a second floating platform for transportation is provided for mounting the accessory equipment thereon, thereby forming at least one accessory equipment package.

As previously indicated, the generating package and the accessory package are formed and assembled within a short period of time using machinery and a floating platform manufactured at a suitable factory which is well-controlled for superior quality; then they are transported to the construction site of a power plant. To be transported, the generating package and the accessory equipment package are each mounted on each divable barge and transported through water channels such as rivers and the sea. When the barges reach a place near to the construction site, each barge dives, freeing each package to float by itself. For installing the power plant on land, each package is towed to a predetermined installing position through a water channel prepared in advance. Then, water is taken into the ballast tanks of each barge and the packages are landed on a prepared foundation.Thereafter, surrounding water channel is filled in and reclaimed, and the power plant is constructed in the same way as power plants are generally constructed on land. If the power plant is to be used while floating, the packages are locked in place so that they will not slip from their predetermined positions. In either case, once they are in place, the necessary piping and wiring is performed for each package so that the packages operate as a single power plant.

A power plant is constructed in the above manner is advantageous in many ways. First, all the constituent machinery can be manufactured at a suitable factory within a short period of time and transported to the site at one time. The installation of the machinery at the site is extremely easy. The number of skilled engineers for constructing the power plant can be decreased. The construction period as a whole can be shortened, resulting in a decrease in construction costs.

This invention can be more fully understood from the following detailed description when taken in conjunction with the accompanying drawings, in which: Fig. 1 is a partially cut away plan view of a generating package used in a power plant according to this invention; Fig. 2 is a sectional plan view along the line Il-Il of Fig. 1; Fig. 3 is a sectional side view along the line Ill-Ill of Fig. 1; Fig. 4 illustrates the manner in which the generating package is transported; and Fig. 5 illustrates an example of an arrangement of packages in a package type power plant according to this invention.

A package type power plant according to this invention will now be described with reference to Figs. 1-5. Figs. 1, 2 and 3 are, respectively, a plan view, a front view and a side view of a generating package 10 of a package type power plant according to this invention. In each figure, part of the wall of a structure for a turbine generator is taken away so that the turbine generator disposed in the structure can be seen.

The generating package 10 has a platform 11 with a ballast tank 1 a. Mounted on the platform 11 are main machinery pieces, such as a boiler 12, a turbine 14 and a generator 16 constituting a turbine generator, and transformers 18; and accessory machinery for operating in cooperation with the main machinery, such as forced draft fans 20, a chimney 22, a condenser 24, a circulating water pump 26, a deaerator 28, compressor equipment 30, water pump equipment 32, a hydrogen gas generator 34, battery equipment 36, a controi room 38, a crane and hoisting equipment 40, and emergency generating equipment 42. Numeral 44 in the figures denotes a structure for the turbine generator.

Fig. 4 shows the manner in which the generating package is transported on the sea. The generating package 10 is placed on a barge 46 capable of diving, which is towed by a tugboat 48 through a water channel 60 to a predetermined position.

Fig. 5 shows an example of an arrangement of generating packages and accessory equipment to operate in cooperation therewith. In the figure, three generating packages 10 transported in the above-mentioned manner and disposed adjacent to one another are combined to form a power plant of greater capacity. The accessory equipment which operates in cooperation with the three generating packages 10 is classified and divided into six groups to be mounted on six platforms 51 for forming six accessory equipment packages. The rectangles shown by the broken lines in Fig. 5 show the accessory equipment packages thus manufactured. Among these packages, numeral 60 is a substation package.A primary substation 62 is included in this package for transforming the current generated by the generating packages 10 l:9 to a predetermined voltage which is supplied to electric systems or consumers (not shown). Numeral 64 shows a water feeding package on which are mounted a salt-to-fresh water distillation device 66 and a turbine oil storage tank 68 is supplied to the generating packages 10 through a turbine oil supplying pipe 70. Numeral 72 denotes a water purifying package on which are mounted a water purifying device 74, a purified water feeding device 76, an oil supplying tank 78 and an auxiliary boiler 80 for starting the operation of the power plant. The water purifying device 74 is supplied with fresh water from the salt-to-fresh water distillation device 66 to be purified.The purified water is then supplied to the generating package 10 through the purified water feeding device 76 for the boiler and the other uses.

Numeral 82 denotes a fuel storage package with fuel storage tank 84 in which the fuel heating the boiler is stored. Numeral 86 denotes a diesel generating package having diesel generating equiment88 for use in starting the power plant or as an emergency power supply. Numeral 90 shows a service building package containing a building 92 for operating and controlling the power plant, a structure 94 for fire extinguishing device, and a water tank 96 for fire-fighting.

These six packages are, as in the case of the generating packages 10, transported to the construction site via available water channels.

After they are landed or locked in their floating positions, the wiring and piping between each package and to the power plant is completed to form a package type power plant.

In this kind of package type power plant, the work involved in individually transporting to the site and assembling the accessory equipment machinery and the construction materials can be significantly decreased by the use of generating packages and accessory equipment packages.

Thus, the construction time can be shortened, resulting in a decrease in construction costs.

Claims

1. A package type power plant comprising: a generating package having a first platform capable of floating for transportation, main generating machinery mounted on said first platform, and accessory machinery mounted on said platform for operating in cooperation with said main machinery; and at least one accessory equipment package having one second platform capable of floating for transportation, and accessory equipment mounted on said second platform for operating in cooperation with said generating package.

2. A package type power plant, substantially as hereinbefore described with reference to the accompanying drawing.