Power plants – Combustion products used as motive fluid – Having mounting or supporting structure
Reexamination Certificate
2001-09-21
2002-09-17
Casaregola, Louis J. (Department: 3746)
Power plants
Combustion products used as motive fluid
Having mounting or supporting structure
C060S801000
Reexamination Certificate
active
06449957
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to a gas turbine generator plant in which a generator and a gas turbine unit maybe disposed in a unitary manner within a building by means of making auxiliary equipment, comprising a starter, a lubricating oil device, a control oil device, and a lubricating oil main tank into a unit.
2. Related Art
FIG. 10
is a sketch showing the common arrangement of a conventional gas turbine generator plant. A gas turbine unit
80
a generation
81
, and a lubricating oil main tank
91
are illustrated. Lubrications oil auxiliary equipment
92
is disposed above the lubricating oil main tank
91
. A starter
93
serves to start the generator
81
. A speed reducer
94
is coupled to the starter
93
and to the axle of the generator
81
. A fuel oil control unit
95
and a fuel oil pump
96
are illustrated. The lubricating oil main tank
91
, lubricating oil auxiliary equipment
92
, fuel oil control unit
95
, and fuel oil pump
96
save the necessary portions thereof connected to the gas turbine unit
80
, the generator
81
, and the starter
93
via wiring and piping
82
.
In the conventional gas turbine generator plant having the structure described above, the lubricating oil main tank
91
, the lubricating oil auxiliary equipment
92
, the starter
93
, the speed reducer
94
, the fuel oil control unit
95
, and the fuel oil pump
96
all have different purposes and occupy different positions. The positions occupied by the lubricating oil main tank
91
, the lubricating oil auxiliary equipment
92
, the starter
93
, the speed reducer
94
, the fuel oil control unit
95
, and the fuel oil pump
96
are all appropriate to the use thereof. The lubricating oil main tank
91
, the lubricating oil auxiliary equipment
92
, the starter
93
, the speed reducer
94
, the fuel oil control unit
95
, and the fuel oil pump
96
are disposed within the planar space in the vicinity of the gas turbine unit
80
and the generator
81
.
During the withdrawal of the rotors of the gas turbine unit
80
or generator
81
large parts, such as the rotors and similiar are conventially manipulated using large-scale overhead cranes, or maintenance cranes disposed at each device. Thus, the floor area of the building housing the gas turbine generator plant is large, resulting in complex transportation, installation, and maintenance, this necessarily involves large increases in cost.
Furthermore, the following problems are a result of such a planar arrangement.
Since the equipment is arranged in a planar fashion, the floor area of the building required for the installation of the plant is large.
Because the machines are disposed in an individualized fashion, transportation thereof is time consuming, and installation is also complex, and this leads to increases in cost'.
Because maintenance cranes are required for each device, the structure of the building is complex, and there is duplication of the equipment.
SUMMARY OF THE INVENTION
The present invention was developed in order to solve the problems described above. The chief features of the gas turbine generator plant of the invention include auxiliary equipment comprising a starter, a lubricating oil device, a control oil device, and a lubricating oil main tank, which are disposed in a compact fashion and which are made unitary. This unitary auxiliary equipment can be coupled with a gas turbine unit and a generator in a single unit, into an arrangement which reduces the floor area of the building. Thus transport, installation, and maintenance are all simplified in comparison to the conventional technology, and a gas turbine generator plant is provided at reduced costs.
The gas turbine generator plant of the present invention is provided with a generator, a gas turbine unit, and auxiliary equipment. The auxiliary equipment includes a starter, a lubricating oil device, a control oil device, and a lubricating oil main tank. The auxiliary equipment is made unitary, and the unitary auxiliary equipment, the generator, and the gas turbine unit are disposed in that order within a building.
In the gas turbine generator plant of the present invention, auxiliary equipment is made so that the floor area required for the plant is greatly reduced, and installation costs are also reduced. Furthermore, the unitary auxiliary equipment can be transported in one piece, so that if a covering is provided, the amount of rust on the auxiliary equipment resulting from exposure to salt during sea transport may be reduced. Highly compact packing of the unitary auxiliary equipment is also possible, so that transportation costs may be reduced. Furthermore, the installation points are also reduced in number, so that the number of installation man hours or the amount of man power necessary for installation is dramatically reduced. Furthermore, only one dedicated crane need be provided for maintenance, so that maintenance of all the auxiliary equipment may be easily carried out at a savings in cost.
As described above, by making the auxiliary equipment unitary, it is possible to dramatically reduce the installed floor area of the plant. Furthermore, it is possible to transport the unitary auxiliary equipment in one piece, so that transportation costs may also be reduced. Furthermore, the installation points are also reduced in number, so that it is also possible to reduce installation costs. Additionally, plant maintenance may also be easily conducted by providing a single dedicated crane.
REFERENCES:
patent: 3418485 (1968-12-01), Anderson et al.
patent: 4002023 (1977-01-01), Hartmann
patent: 684428 (1952-12-01), None
patent: 718632 (1954-11-01), None
patent: 1026910 (1966-04-01), None
patent: 1150147 (1969-04-01), None
General Electric. “General Electric Heavy Duty 5001 Gas Turbines” (product brochure), 1976. pp. 16-17.
Nagai Hidekazu
Takamatsu Masaru
Casaregola Louis J.
Mitsubishi Heavy Industries Ltd.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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