JPH0797935A - Gas turbine installation constructing method - Google Patents

Abstract

PURPOSE:To shorten a construction period by performing the installation work of a machine and the work in a cave passage in an intake air duct at the same time in a gas turbine installation wherein a machine such as an air compressor or a gas turbine is provided on a machine base stand on the upper part of the intake air duct. CONSTITUTION:In a gas turbine 6 installation, air is intorduced to an intake air duct 2 from an intake chamber 1 and then guided to an intake plenum 4 after passing a silencer 4 and a cave passage 8. After that, the air is compressed by an air compresosor 5 and supplied to a gas turbine 6 togehter with fuel. Respective machines 5, 6 are provided on the upper surface of a machine base stand 7 arranged on the upper part of the intake air duct 2. In this case, when the gas turbine installation is constructed, the steel rod work is performed on the upper parts of the cave passage 8 and the machine base stand 7, and concrete is placed so as to embed the temporarily placed silencer 3 and the intake air duct 2, and the installation work of respective machines 5, 6 is performed, and also the tie-in work of the air intake duct 2 in the cave passage 8 is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a gas turbine facility, and more particularly to a method for constructing a gas turbine facility which shortens a construction period and is economical.

[0002]

2. Description of the Related Art FIG. 7 is a schematic side view of a conventional gas turbine facility, and FIG. 8 is a schematic plan view of the same. In the figure, an intake chamber 1 that takes in air from the atmosphere is arranged at the upper part, and the intake air is guided to an intake plenum 4 via an intake duct 2 and a silencer 3 and introduced from the intake plenum 4 to an air compressor 5. Then, the air guided to the air compressor 5 is compressed and supplied to the combustor, and the combustion gas is expanded in the gas turbine 6 and then exhausted from the exhaust duct.

The construction method of the gas turbine equipment described with reference to FIGS. 7 and 8 will be described with reference to FIG.
Construction of machine foundations such as the gas turbine 6, the air compressor 5, and a generator (not shown) is performed (step 101). When the mechanical foundation work is completed, an overhead crane is used to install machines such as the gas turbine 6 and the air compressor 5 (step 102).

Next, scaffolding work for the intake duct 2 is carried out,
When this scaffolding work is completed, a temporary loading work for the intake duct 2 is carried out using an overhead crane (step 104). In addition, in parallel with the above construction, the intake filter and silencer 3
Auxiliary equipment foundation work and auxiliary equipment installation work are performed (Process 1
05) (step 106).

After that, the connection of the intake duct 2 and the main assembly work are carried out. When these are completed, scaffold disassembly work is carried out (step 107) (step 108).

Further, another construction method of the conventional gas turbine equipment will be described with reference to FIG.

First, a mechanical foundation work for the air compressor 5, the gas turbine 6, and the generator is first carried out, and when this work is completed, the air compressor 5, the gas turbine 6, the generator, etc. are mounted using an overhead crane. Installation (process 201) (process 20
2).

Next, the intake filter and the silencer 3 are installed, and the scaffolding of the intake duct 2 is performed (step 2).
03) (step 204). When the scaffolding of the intake duct 2 is completed, the ceiling duct is used to carry in the intake duct 2 for temporary assembly work, after which the main body of the intake duct 2 is spliced and main assembled (step 205) (step 206). ). When the main assembly is completed, scaffolding and the like are disassembled (step 20).
7).

[0009]

However, in the above-mentioned conventional method for constructing the gas turbine equipment, as described with reference to FIGS. 9 and 10, the machine such as the air compressor 5 and the gas turbine 6 is installed on the machine base. After that, there is a problem that the construction of the gas turbine intake equipment cannot be started, the construction period becomes long, and it is not efficient.

That is, in the gas turbine intake equipment shown in FIG. 7, the intake plenum 4 faces upward, the intake chamber 1 is arranged in the upper portion, and the intake duct 2 is arranged in the upper portion of the machine such as the gas turbine 6, The construction of the gas turbine intake equipment such as the intake duct 2 was performed after the machine foundation was surrendered.

Moreover, an overhead crane must be used for both the installation of the machine such as the gas turbine 6 and the gas turbine equipment, and parallel work cannot be performed. Therefore, the construction period of the gas turbine equipment becomes long. Was there.

Therefore, an object of the present invention is to provide a method for constructing a gas turbine facility by improving the construction process of the gas turbine intake facility and shortening the construction period of the gas turbine facility.

[0013]

The invention according to claim 1 has an intake port for sucking and sucking air in a lower portion, and a gas turbine and an air compressor are provided on a machine base of an intake duct connected to the intake port. In the construction method of gas turbine equipment where machines such as are installed, the construction of the lower rebar of the cavern for the intake duct constructed inside the machine base is carried out, and the silencer and the intake duct are installed at the specified positions of the constructed cavern. Centered and placed temporarily,
Construction of the mechanical foundation and the upper rebar construction of the tunnel, placing a silencer temporarily placed, concrete to fill the intake duct, leaving the scaffolding of the air inlet of the air compressor in the tunnel, Along with the installation of the machine, the foundation work such as the intake chamber and the installation work are performed, and the work outside the cavern of the intake duct is carried out, and the scaffold left inside the cavern is used to install the intake duct to the air compressor intake port. The scaffold left in the step-in cave was removed.

According to a second aspect of the present invention, an intake port for sucking air is provided in the lower portion, and a machine such as a gas turbine or an air compressor is arranged on a machine base stand above the intake duct connected to the intake port. In the method of constructing a gas turbine facility, after the air intake duct and the silencer are temporarily centered and temporarily placed at a predetermined position on the path of the cave for installing the air intake duct, the machine foundation table and the tunnel built inside this machine foundation table are installed. After constructing the road rebar construction, after this rebar construction is completed, concrete is placed to bury the intake duct and silencer, and the machine is installed while leaving the scaffolding of the air compressor inlet in the cave. In addition to the construction work, the foundation work and installation work of the intake chamber, etc. will be performed, and the work outside the cave of the intake duct will be carried out, and the scaffold left inside the cave will be used to connect the intake duct to the air compressor intake port. It is obtained so as to remove the left in the province scaffold.

According to a third aspect of the present invention, an intake port for sucking in air is provided in the lower part, and a machine such as a gas turbine or an air compressor is arranged on a machine base stand above the intake duct connected to the intake port. In the method of constructing a gas turbine facility, a temporary opening is formed to allow the equipment placed in the cavern built in the machine foundation table to be carried in, and the installation work for installing the machine on the machine foundation table The equipment is carried in through the opening and the construction in the cave is done in parallel.

[0016]

According to the invention of claim 1, the lower rebar construction of the cavern is performed, the silencer and the intake duct are centered and temporarily placed in the cavern, and the mechanical foundation and the upper rebar construction of the cavern are constructed. Concrete is placed so as to bury the silencer and the intake duct placed, the machine is installed, and the intake duct in the cavern is spliced. Therefore, the installation of the air intake equipment is not done after the machine foundation is laid over as in the past, but the installation work for installing the machine on the machine foundation and the work in the cave can be done in parallel, so that the gas The construction period of turbine equipment can be shortened.

According to a second aspect of the present invention, after the air intake duct and the silencer are centered and temporarily placed in the cave, the mechanical foundation and the reinforcement work of the cave built inside the mechanical foundation are constructed.
After this reinforcing bar work is completed, concrete is placed so that the intake duct and the silencer are buried, the machine is installed, and the intake duct in the cave is spliced. Therefore, the installation of the air intake equipment is not done after the machine foundation is laid over as in the past, but the installation work for installing the machine on the machine foundation and the work in the cave can be done in parallel, so that the gas The construction period of turbine equipment can be shortened.

According to the invention of claim 3, the construction work of the gas turbine equipment is carried out in parallel with the installation work for installing the machine on the machine base and the work in the cavern by carrying in the equipment from the temporary opening of the cavern. Can be shortened.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic side view of gas turbine equipment showing a first embodiment of the present invention. In the figure, the intake chamber 1
The air taken in from is introduced into the intake duct 2,
It is guided to the intake plenum 4 via a silencer 3 provided in the middle of the intake duct 2. After that, the air is introduced into the intake plenum 4
Is pressurized to a predetermined pressure by the air compressor 5 and is supplied to the gas turbine 6 together with the fuel.

On the machine base 7, the machines of the air compressor 5 and the gas turbine 6 are arranged above the intake duct 2. In addition, 8 has shown the cave.

Next, the construction method of the gas turbine equipment will be described with reference to the process procedure shown in FIG. 2. First, the lower construction of the machine foundation base 7 is started. In this lower construction, as shown in FIG. The reinforcing bars 9 are arranged on the lower mat portion 13 (step 301). After the installation work of the reinforcing bars 9 is completed, the cores of the intake duct 2 and the silencer 3 etc. as auxiliary devices are taken out at predetermined positions in the cave 8 and temporarily placed (step 302). After the temporary placement of the auxiliary device is completed, the reinforcing bar and the frame work on the upper side surface of the machine base 7 are performed to complete the machine base 7 (step 303).

However, at this time, the scaffolding of the frame inside the sinus 8 is left with the portion of the intake plenum 4. Machine base 7
After the completion of step 1, the installation work of the air compressor 5 and the generator is started (step 304).

On the other hand, the auxiliary foundation work for the intake chamber 1 and the intake filter is executed in a separate process in parallel with the above steps 301 to 304, and the auxiliary device is installed (step 305) (step 3).
06). After the installation of these machines and the installation of auxiliary equipment is completed, the scaffolding in the cave 8 is used to connect the intake duct 2 such as the connection to the intake plenum 4 and the connection to the intake chamber 1, and further to the machine foundation table. Construction of the air intake duct 2 outside 7 is performed, and finally the scaffold remaining in the cave 8 is removed (step 307) (step 30)
8).

In this way, the silencer 3 is attached to the machine base 7
By carrying out the construction integrally with the above, the work of bringing in the silencer 3 in the cave 8 becomes unnecessary, and the safe construction and the construction period can be shortened.

Next, a second embodiment of the present invention will be described with reference to FIG.

First, auxiliaries such as the silencer 3 and the intake duct 2 are centered in the sinus 8 and temporarily placed (step 401). The construction of the machine base 7 is performed, and after the completion, the machines such as the air compressor 5 and the gas turbine 6 are installed (step 402) (step 40).
3). At this time, auxiliary equipment foundation work such as an intake filter is performed in parallel with steps 402 to 403, and auxiliary equipment is installed (step 404) (step 405).

After that, the intake duct 2 is connected,
The scaffold in the cave 8 is removed (step 406) (step 40)
7).

In this way, first, the intake duct 2, the silencer 3, etc. are centered at a predetermined position in the cave 8 and temporarily placed, and the machine base 7 is constructed. After the machine is installed, the temporarily placed intake duct is installed. 2 is spliced and completed.

Next, a third embodiment of the present invention will be described with reference to FIG.

The third embodiment is applied when the embodiment shown in FIG. 2 or 4 is impossible.

First, the construction of the machine base 7 is performed. At this time, as shown in FIG. 6, a temporary opening is formed between the low-pressure steam turbine 11 of the machine base 7, the condenser installation space 12 and the cavern 8. The part 10 is formed (step 501). Machine base 7
After completion, the air compressor 5 and the gas turbine 6 are installed using an overhead crane (step 502).

On the other hand, the silencer 3'is carried into the condenser installation space 12, and as shown in the drawing, the temporary openings 10, 10 '.
The inside is pulled laterally in the direction of the arrow in the drawing to set it in a predetermined position in the sinus 8 (step 503).

The auxiliary equipment foundation work and auxiliary equipment installation work are performed in the same manner as in the first and second embodiments (step 504) (step 505).

Thereafter, the intake duct 2 is rejoined, the scaffolding in the cave 8 is removed, and finally the temporary opening 10,
10 'is restored (step 506) (step 507).
(Step 508).

In this embodiment, the temporary openings 10, 1
An airtight door may be used instead of 0 ', and the machine base 7 may be a structure made of steel instead of reinforced concrete.

[0037]

According to the invention of claim 1, the construction of the lower rebar of the cavern is performed, the silencer and the intake duct are centered and temporarily placed in the cavern, and the upper rebar of the machine foundation and the cavern is constructed. , The temporarily placed silencer and concrete are placed to bury the intake duct, the machine is installed, and the intake duct in the cave is spliced. Therefore,
Since the installation work for installing the machine on the machine foundation and the work in the cave can be done in parallel, the construction period of the gas turbine equipment can be shortened.

According to the second aspect of the present invention, after the air intake duct and the silencer are centered and temporarily placed in the cavern, the mechanical foundation and the reinforcing rod work for the cavern constructed inside the mechanical foundation are constructed.
After this rebar construction is completed, concrete is placed, the machine is installed, and the intake duct in the cave is spliced. Therefore, since the installation work for installing the machine on the machine foundation and the work in the cave can be performed in parallel, the construction period of the gas turbine equipment can be shortened.

According to the third aspect of the invention, the construction period for the gas turbine equipment is required because the installation work for installing the machine on the machine foundation and the work for loading the equipment from the temporary opening of the cave and performing the work inside the cave can be performed in parallel. Can be shortened.

[Brief description of drawings]

FIG. 1 is a schematic side view of a gas turbine facility showing a first embodiment of the present invention.

FIG. 2 is a flowchart showing a construction procedure of the gas turbine equipment of FIG.

FIG. 3 is a bird's eye sectional view of a silencer installed in the cave during the construction of FIG.

FIG. 4 is a flowchart showing a construction procedure of gas turbine equipment showing a second embodiment of the present invention.

FIG. 5 is a flowchart showing a construction procedure of gas turbine equipment showing a third embodiment of the present invention.

FIG. 6 is a schematic side view of the gas turbine facility of FIG.

FIG. 7 is a schematic side view of a gas turbine facility showing a conventional example.

8 is a schematic plan view of the gas turbine equipment of FIG.

FIG. 9 is a flowchart showing an example of a construction procedure in a conventional gas turbine facility.

FIG. 10 is a flowchart showing another example of a construction procedure in a conventional gas turbine facility.

[Explanation of symbols]

 1 Intake Chamber 2 Intake Duct 3 Silencer 4 Intake Plenum 5 Air Compressor 6 Gas Turbine 7 Machine Foundation 8 Cave 9 Reinforcing Bar 10 Temporary Opening 11 Low Pressure Steam Turbine 12 Condenser Installation Space 13 Mat Part

Claims (3)

[Claims] 1. Construction of a gas turbine facility having a suction port for sucking air in a lower portion, and a machine such as a gas turbine or an air compressor arranged on a machine foundation table above an intake duct connected to the suction port. In the method, the lower rebar construction of the cavern for the intake duct to be built inside the machine foundation table is constructed, and the silencer and the intake duct are temporarily centered and temporarily placed at a predetermined position of the constructed cavern, and the machine foundation is installed. While constructing the upper rebar construction of the pedestal and the tunnel, placing the concrete so as to bury the temporarily placed silencer and intake duct, while leaving the scaffolding of the intake port of the air compressor in the tunnel. In addition to the installation work of the machine, the foundation work and installation work of the intake chamber, etc., the work outside the cavern of the intake duct is performed, and the scaffold left in the cavern is used to carry out the air compressor intake port. What Construction method of gas turbine equipment, characterized in that the removal of the left in the sinus canal narrowing joining the duct scaffold. 2. Construction of a gas turbine facility having a suction port for sucking air in a lower portion and arranging a machine such as a gas turbine, an air compressor or the like on a machine foundation table above the suction duct connected to the suction port. In the method, after the air intake duct and the silencer are centered and temporarily placed at a predetermined position on the path of the cavern for installing the air intake duct, the mechanical foundation and the cavern built inside the mechanical foundation Of the machine, while placing concrete after the completion of the reinforcement work to fill the intake duct or silencer, leaving the scaffolding of the intake port of the air compressor in the cavern, In addition to the installation work, the foundation work such as the intake chamber and the installation work are performed, and the work outside the cavern of the intake duct is carried out, and the scaffold left in the cavern is used to utilize the air compressor intake port. Construction method for a gas turbine equipment characterized by removing the left in the sinus tract narrowing passage an intake duct scaffold. 3. Construction of a gas turbine facility in which a machine, such as a gas turbine or an air compressor, is arranged on a machine foundation table on the upper part of an intake duct connected to the intake port, which has an intake port for intake of air. In the method, a temporary opening for forming a device to be installed in a cavern built in the machine base is formed, and installation work for installing a machine on the machine base and the cavern opening is performed. A method for constructing a gas turbine facility, which comprises carrying in equipment from a building and constructing the same in parallel with the construction in the cave.