JP3104129B2 - Gas turbine power plant and its maintenance method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine power plant, and a starting device, a lubricating oil device, a control oil device, and a main oil tank for lubricating oil can be unitized and arranged in a building integrally with the gas turbine unit. It was done.

[0002]

2. Description of the Related Art FIG. 6 is a general layout of a conventional gas turbine power plant. In the figure, 40 is a gas turbine unit, and 41 is a generator. Reference numeral 51 denotes a lubricating oil main tank, 52 denotes a lubricating oil auxiliary device arranged at an upper portion of the lubricating oil tank, 53 denotes a starting device, 54 denotes a speed reducer connected to the starting device and connected to a shaft of the generator 41. is there. Reference numeral 55 denotes a fuel oil control unit, and reference numeral 56 denotes a fuel oil pump. The lubricating oil tank 51, the lubricating oil auxiliary device 52, the fuel oil control unit 55, and the fuel oil pump 56 will not be described in detail, but are required. Where the gas turbine unit 40,
The generator 41 and the starting device 53 are connected by wiring and piping 42.

In the conventional gas turbine power plant having the above-described structure, a main lubricating oil tank 51 and auxiliary lubricating oil 52
Since the starting device 53, the speed reducer 54, the fuel oil control unit 55, and the fuel oil pump 56 have different purposes of use, they are arranged at different positions in accordance with the purpose of use. It is arranged near the machine 41 using a plane space.

When pulling out the rotor of the gas turbine unit 40 or the generator 41 arranged in the plane space as described above, or when maintaining the equipment, large objects such as the rotor may use a large-sized cranes, or may be provided with various devices. The current situation is that a maintenance crane is installed every time. In such a planar arrangement, the building area of the plant is large and large, and accordingly, transportation, installation, maintenance, and the like are complicated, resulting in enormous cost increase.

[0005]

As described above, in the conventional gas turbine power plant, each device is separately arranged in a plane for the purpose of use, but such an arrangement is as follows. Problem.

[0006] The arrangement of the equipment is flat, and the installation area of the plant is large. Since the equipment is individualized, it takes time to transport, the installation is complicated, and the cost is increased.

[0007] A maintenance crane is required for each device, which complicates the structure of the building and makes the equipment redundant.

[0008] Therefore, the present invention provides a compact arrangement of auxiliary equipment and a starting device so that the gas turbine unit and the generator can be connected in unit units, and the arrangement is such that the flat area of the building is reduced. It is an object of the present invention to provide a gas turbine power generation plant that can simplify, reduce the time, and reduce the cost in installation, maintenance, and maintenance.

[0009]

The present invention provides the following means (1) to (4) in order to solve the above-mentioned problems.

(1) In a gas turbine power plant, auxiliary equipment including a starting device, a lubricating oil device, a control oil device, and a lubricating oil tank are unitized, and the arrangement in the building is unitized. , Gas turbine units in that order, and the roof of the building is
Accessories and generators with the roof above
Higher than the roof above the
An electric machine maintenance crane and the gas turbine
A gas turbine power plant, comprising a unit maintenance crane .

(2) The gas turbine according to the invention of (1) above
In a power plant , a place to pull out the rotor of the generator
In this case, use the maintenance crane for the generator.
Disassemble the upper half of the accessories and
A maintenance method for a gas turbine power plant , comprising:

(3) Gas turbine power plant
Starting device, lubricating oil device, control oil device and lubricating oil tank
Unit made of auxiliary equipment consisting of
Of knitted accessories, generators and gas turbine units
And the roof of the building is
Accessories and generators with the roof above
A gas turbine power generation plant , wherein a gas turbine intake unit is provided on a lower roof of the building.

[0013] (4) Oite to the invention of the above (1), auxiliary machines described above unitized are start device, that the control oil system and the lubricating oil system unitized placed over the lubricating oil tank Characteristic gas turbine power plant.

In (1) of the present invention, the auxiliary equipment including the starting device, the lubricating oil device, the control oil device and the lubricating oil tank is unitized and integrated, so that the plant installation area is significantly reduced and the manufacturing cost is reduced. Can be reduced. Also, unitized auxiliary equipment can be transported collectively, so if a cover is attached, rusting of various equipment due to salt can be reduced at sea at sea transportation, packing will be high density and transportation cost will be reduced. Also, the number of installation locations is reduced, and the number of installation steps is significantly reduced. Further, in terms of maintenance, if one dedicated crane is installed, all the auxiliary machines can be implemented by one crane.

[0015] Further, in (1) of the present invention, by raising the upper roof of the gas turbine unit of the building, to lower the roof of the generator and auxiliaries units, large maintenance to the gas turbine unit side the crane of use, the generator and the auxiliary unit side can be placed a small maintenance crane, the large crane Ru can lift the rotor of a gas turbine. Also, the present invention
In the maintenance method (2) , the generator rotor can be pulled out with a small crane, and maintenance of auxiliary equipment can be performed exclusively. In this way, one crane can be reduced in size, auxiliary equipment can be handled exclusively, its power lines and instrumentation lines can be made thinner, and the entire crane becomes inexpensive. Buildings are also lighter, which leads to lower building costs.

Further, by providing the intake means on the lower roof of the building more than the invention of (3), the plane area can be made smaller than that of the invention of (1). Furthermore, (4)
By arranging the starting device, the control device, and the lubricating oil device on the lubricating oil tank as in the invention, the unitization becomes more compact, and the installation area of the plant is remarkably reduced as compared with a conventional planar arrangement plant. be able to.

[0017]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows the overall configuration of a gas turbine power plant according to one embodiment of the present invention, wherein (a) is a plan view and (b) is a side view. In both figures, reference numeral 20 denotes a starting and auxiliary unit.
A starting device for starting the gas turbine and auxiliary equipment 22 including auxiliary equipment of a lubricating oil system are arranged on the upper surface of the main lubricating oil tank 1 to constitute an integrated unit.

Reference numeral 23 denotes a building, on which a small maintenance crane 21 is mounted on the ceiling to perform maintenance of auxiliary equipment, pull out of a generator rotor, and the like. An air intake system 25 is installed on the building 23. 24 is also a building,
The generator 41 and the gas turbine unit 40 are directly connected inside. In the building 24, the upper part of the gas turbine unit 40 is raised, and a large maintenance crane 26 dedicated to the gas turbine is installed to lift the gas turbine rotor and the like during maintenance. In addition,
50 is the basis.

FIGS. 2 and 3 show the starting and auxiliary unit 20 of the gas turbine power plant according to the embodiment described above.
2 is a plan view, and FIG. 3 is a side view. In both figures, the starting / auxiliary unit 20 has an auxiliary device 22 including a starting device of a gas turbine, a lubricating oil device, a control oil device, and various auxiliary devices of various lubricating oil systems arranged on the main lubricating oil tank 1. And unitized with the tank,
The unit including these starting devices is configured to be connected to the generator. Hereinafter, these features will be described in detail.

In FIGS. 2 and 3, reference numeral 1 denotes a main lubricating oil tank. On the upper surface of the tank 1, the following devices are arranged. 2 is a starting device, 3 is a lubricating oil device, 4 is a control oil device,
5 is a gear device and 6 is a starting motor. These 2 to 6
Are installed on the upper surface of the main lubricating oil tank 1.

Reference numeral 7 denotes a turning motor, 8 denotes a control oil tank and a filter, 9 denotes a lubricating oil pump, 10 denotes a lubricating oil filter, and 11 denotes other accessories. Each of these accessories is also disposed on the upper surface of the main lubricating oil tank 1. The auxiliary devices 22 are composed of the main devices 2 to 6 and 7 to 11 described above. The starting / auxiliary unit 20 is integrally formed with the control unit.

Reference numeral 15 denotes a soundproof cover attached to the periphery of the upper surface of the main lubricating oil tank 1, which is provided particularly when installed indoors. In the case of outdoor installation, the soundproof cover 15 is provided with waterproofness on the outer surface and is used as a wind and rain cover. In this case, although not shown, the ceiling can be covered with a cover so that it is not exposed to rain.

As described above, the auxiliary equipments 22 are arranged on the upper surface of the main lubricating oil tank 1 so that the compact starting and auxiliary equipment unit 2
By constructing the plant 0, the plant area can be largely saved, transportation and installation costs can be reduced, and maintenance can be performed by one crane. The total cost of maintenance is greatly reduced.

FIG. 4 is a detailed side view of the gas turbine power plant according to the present embodiment. Basic 5 in the figure
A building 23 and a building 24 are installed above the building 0, the building 23 is lower than the building 24, and an air intake system 25 for taking in the gas turbine is installed above the building 23.

In the building 23, a generator 41 and a starting / auxiliary unit 20 shown in FIGS. 2 and 3 which are directly connected to the generator 41 are installed. On the ceiling of the building 23, a small maintenance crane 21 is installed. The crane 21 performs maintenance of the auxiliary equipment 22 and pulls out the rotor of the generator 41.

The building 24 is higher than the building 23, and has a large maintenance crane 26 on the ceiling.
A gas turbine unit 40 is installed in the building 24,
The large maintenance crane 26 lifts and suspends the gas turbine rotor 27.

As described above, since the maintenance crane is dedicated to the large crane 26 and the small crane 21, the maintenance crane 21 can be reduced in size and weight, and the building 23 can have a low roof. At the same time, it is possible to shorten in the axial direction. Furthermore, since the intake system 25 is arranged on the roof of the building 23, the arrangement is compact, and wind and seismic loads are reduced.

FIG. 5 is a side view showing the starting / auxiliary unit 20 and the maintenance crane 21 in this embodiment. As shown, a small maintenance crane 21 is installed in the building 23 as shown in FIG. The accessory unit 20 is integrally unitized with an accessory 22 including an activation device 2 installed on the upper surface of the main lubricating oil tank 1.

When the rotor of the generator 41 is pulled out, the cover is removed by the maintenance crane 21, the upper half of the lubricating oil equipment on the lubricating oil main tank 1 is disassembled, and the lubricating oil main tank 1 side is disassembled. The hook can be hooked on the rotor of the generator 41 by the crane 21 to move in the axial direction and be pulled out.

As described above, in the gas turbine power plant of the present embodiment, the starting / auxiliary unit 20 is configured by arranging the auxiliary equipment 22 including the starting device on the upper surface of the main lubricating oil tank 1. Then, the starting / auxiliary unit 20 and the generator 41 are installed in the building 23, a dedicated small maintenance crane 21 is installed on the ceiling, and an intake system 25 is installed on the roof. Building 24 is Building 23
The gas turbine unit 40 is installed at a high height, a large maintenance crane 26 is installed on the ceiling, and the plant is arranged in the order of the starting / auxiliary unit 20, the generator 41, and the gas turbine unit 40.

By installing in this way, the building 23 of the start-up / auxiliary unit 20 and the generator 41 can be lowered, and by installing the intake system 25 on the roof, the axial direction can be shortened. Can be reduced. In addition, since the auxiliary equipment 22 is disposed on the upper surface of the main lubricating oil tank 1 like the start-up / auxiliary equipment unit 20, the auxiliary equipment 22
Are unitized, transportation, installation and maintenance are simplified, and costs are reduced. Further, by using a dedicated crane, it is not necessary to install a maintenance crane for each auxiliary device and device, and all the work can be performed by the small crane 21 and the large crane 26.

Since the maintenance crane 21 can be reduced in size, the crane can be reduced in size and weight. When the weight is reduced, the crane gutter can be made thinner and the crane beam can be made smaller. As a result, not only is the crane inexpensive, but also the motor capacity is reduced, so that the power line and instrumentation wiring become thinner and installation becomes easier.

When the crane 21 becomes smaller and lighter, the building 2
3 roof can be lowered. And the wall material of the building 23 can be reduced in cost. Further, the building material can be made thinner by the load ratio of the crane 21. If the building materials become thinner, the effective space inside the building will expand. In addition, the wind and seismic load of the intake filter and silencer installed on the roof are reduced.

Further, by providing the starting device 2 on the main lubricating oil tank 1, the axial column of the starting device can be shortened toward the building. Reducing the column span will result in significant cost reductions in roof and building materials. That is, the beam can be made thin. Also, of course, the cable trench at the rear of the activation device 2 can be shortened. This reduces the concrete volume and the cable length. In addition, the intake duct can be shortened, the weight can be reduced, and the building can be easily designed.

[0035]

According to the first aspect of the present invention, in a gas turbine power plant, auxiliary equipment including a starting device, a lubricating oil device, a control oil device, and a lubricating oil tank are unitized, and the arrangement in the building is unitized. Auxiliary equipment, generator, gas turbine unit arranged in order, the roof of the building, the roof above the gas turbine unit is higher than the roof above the unitized auxiliary equipment and generator , Said
A crane for maintenance of accessories and generators,
Gas turbine unit maintenance crane
It is characterized by being arranged . In addition, (2)
In the maintenance method, it is necessary to pull out the rotor of the generator.
In this case, use the maintenance crane for the generator.
It is characterized by performing. Further, in the invention of (3), moth
Starting equipment and lubricating oil
And auxiliary equipment consisting of a control oil device and a lubricating oil tank.
Auxiliary equipment and power supplies
Electric machinery and gas turbine units are arranged in this order, and the building
The root covers the roof above the gas turbine unit.
Higher than the roof above the knitted accessories and generator
And, on the lower roof of the building, characterized in that a gas turbine inlet means, further Oite to the invention of the above (1) in the invention of (4), wherein the unitized auxiliaries Is characterized in that a starting device, a control oil device, and a lubricating oil device are arranged on a lubricating oil tank to form a unit. With such a configuration, the following effects can be obtained.

By unitizing the accessories, the installation area of the plant is remarkably saved, and the unitized accessories can be transported in a lump, so that the transportation cost is reduced, and the number of installation points is reduced, so that the installation cost is also reduced. In addition, maintenance can be easily performed by installing a dedicated crane.

By raising the roof of the gas turbine unitized building and lowering the roof of the generator and unitized auxiliary equipment, a large crane and a small crane can be installed. With a small crane, the gas turbine rotor can be maintained with a large crane. Therefore, the building in which the small crane is installed can be reduced in weight and cost.

Further, by providing the intake means on the lower roof, the plant installation area can be further reduced.

Further, when the auxiliary equipment is unitized, the starting device, the control device, and the lubricating oil device are installed on the upper surface of the lubricating oil tank, so that the unitization is further increased, and the installation area is reduced, and the transportation and installation are performed. Thus, maintenance cost can be effectively reduced.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a gas turbine power plant according to an embodiment of the present invention, wherein (a) is a plan view and (b) is a side view.

FIG. 2 is a plan view of a starting / auxiliary unit in the gas turbine power plant according to one embodiment of the present invention.

FIG. 3 is a side view of the starting / auxiliary unit shown in FIG. 2;

FIG. 4 is a detailed side view of the gas turbine power plant according to the embodiment of the present invention.

FIG. 5 is a detailed side view of the vicinity of a starting / auxiliary unit and a maintenance crane in the gas turbine power plant according to one embodiment of the present invention.

FIG. 6 is a plan view of a conventional gas turbine power plant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lubricating oil main tank 2 Starting device 3 Lubricating oil device 4 Control oil device 20 Starting / auxiliary unit 21, 26 Maintenance crane 22 Auxiliary equipment 23, 24 Building 25 Intake system 40 Gas turbine unit 41 Generator

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-296454 (JP, A) JP-A-8-312307 (JP, A) JP-A-5-10152 (JP, A) JP-A-60-1985 62621 (JP, A) (58) Fields studied (Int. Cl. ⁷ , DB name) F02C 7/20 F02C 7/00 F02C 7/32

Claims (4)

(57) [Claims] In a gas turbine power plant, an auxiliary device including a starting device, a lubricating oil device, a control oil device, and a lubricating oil tank is unitized, and an auxiliary device, a generator, and the like in which the arrangement in a building is unitized are unitized. The gas turbine units are arranged in this order, and the roof of the building is located above the gas turbine units.
Above the auxiliary equipment and generator with the other roof unitized
And the height of the auxiliary equipment and generator
A maintenance crane and the gas turbine unit
And a maintenance crane for the gas turbine. 2. The gas turbine power generation plan according to claim 1.
When extracting the rotor of the generator,
The auxiliary machine is operated by a crane for maintenance of the generator.
Disassemble the upper half of the rotor and move the rotor
A maintenance method for a gas turbine power plant , comprising: 3. A gas turbine power plant, comprising:
From the moving device, lubricating oil device, control oil device and lubricating oil tank
Auxiliary equipment is unitized, and the arrangement inside the building is the same unit
Auxiliaries, generators, and gas turbine units in that order.
The roof of the building is above the gas turbine unit.
Above the auxiliary equipment and generator with the other roof unitized
Of higher than the roof, on top of the lower roof of the building,
A gas turbine power plant comprising a gas turbine intake means. Wherein auxiliary machinery described above unitized, the activation device, the control oil system and the lubricating oil system gas turbine power generation according to claim 1, wherein the unitized placed over the lubricating oil tank plant.