JPH08200092A - Gas turbine equipment - Google Patents

Abstract

PURPOSE: To provide an installing method by which both ducts can be carried in at one time in a plant having an intake air duct and an exhaust air duct formed on the intake air duct. CONSTITUTION: An intake air duct 13 and an exhaust air duct 19 are integrally formed, and a frame 18 having an entering space of a dolly and a receiving beam of a load of the ducts is provided in a lower part. A piping support and piping are provided above an intake air filter chamber. Therefore, since the intake air duct and the exhaust air duct are integrally formed, both ducts can be carried in and installed at one time on a job site.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine equipment installed in a power plant, and more particularly to a lower intake type gas turbine equipment for taking in air from below the gas turbine.

[0002]

2. Description of the Related Art Conventionally, in a lower intake type gas turbine equipment as disclosed in Japanese Patent Laid-Open No. 4-187830, an intake passage and an exhaust passage are individually manufactured and installed separately.

[0003] Further, usually, for the loading and installation of these parts, a method has been adopted in which each of them is transported by a transport vehicle or the like, then hoisted by a crane or the like, and hoisted at a predetermined position on a foundation or the like. .

[0004]

In the prior art, since the upper and lower intake passages and exhaust passages are manufactured, carried in and installed separately, the work process on site becomes complicated and the work schedule becomes long. There was a tendency.

Therefore, an object of the present invention is to provide a gas turbine equipment having an intake passage and an exhaust passage which can simplify the work process in the field and reduce the work schedule in the lower intake type gas turbine equipment.

[0006]

In the gas turbine equipment of the present invention, a gas turbine is mounted on a mount, and an intake passage for supplying air to the gas turbine is provided below a mounting surface, and further, the intake passage is provided. An exhaust passage for guiding exhaust gas from the gas turbine is formed further upward, and at least a part of the intake passage and the exhaust passage are integrally formed.

The gas turbine equipment normally constitutes a part of a combined cycle power generation plant, and the gas turbine is the central component thereof. The combined cycle power plant according to the present invention is a combined power plant in which a gas turbine and a steam turbine are combined. The heat of the high temperature exhaust gas exhausted from the gas turbine is recovered by the exhaust heat recovery boiler, and steam is generated by the recovered heat. Then, the steam turbine is driven using the steam. There are a uniaxial type in which a gas turbine and a steam turbine are connected uniaxially, and a multiaxial type in which the gas turbine and the steam turbine each have a generator.

There is also an exhaust gas reburn type in which the exhaust heat recovery boiler is not used but the exhaust gas from the gas turbine is reburned by the boiler and the steam generated in the boiler is used to drive the steam turbine.

The gas turbine has a compressor for compressing air, a combustor for combusting the compressed air and fuel, and a turbine driven by combustion gas.

In the present invention, such a gas turbine is formed on the pedestal. This mount is made of concrete and is elevated. The air compressed by the compressor is supplied from below the gantry surface on which the gas turbine is mounted. This supplied air is taken from the air chamber. A filter chamber is installed in the air chamber for cleaning. In the plant of the type in which the exhaust heat recovery boiler is installed, this air chamber is preferably installed in the space between the building in which the gas turbine is installed and the exhaust heat recovery boiler. Moreover, the space can be saved by being installed in the line (axial direction) connecting the gas turbine and the exhaust heat recovery boiler.

With this arrangement, the air used in the compressor is supplied to the compressor after passing through the air passage along the axial direction from the air chamber and through the pedestal. This air passage is generally called an intake passage, and is composed of an intake duct, an intake silencer, and the like.

On the other hand, the exhaust gas exhausted from the gas turbine is guided to the exhaust heat recovery boiler via the air passage. This air passage is generally called an exhaust passage, and is composed of an exhaust duct, an exhaust silencer, and the like. The exhaust passage that connects the gas turbine and the exhaust heat recovery boiler is preferably formed substantially linearly in the axial direction. In other words, it is axial exhaust.
As a result, heat recovery can be efficiently performed by the exhaust heat recovery boiler without causing turbulence in the flow of exhaust gas.

The air taken in from the air chamber flows in the intake duct along the axial direction and is guided to the gas turbine from below. Then, the exhaust gas discharged from the gas turbine flows in the exhaust duct in a direction opposite to the air flowing through the intake duct, and is guided to the exhaust heat recovery boiler.

With respect to the plant having such a structure, the present invention forms at least a part of the intake passage and the exhaust passage integrally, paying attention to the fact that a part of the intake passage and the exhaust passage has a vertical positional relationship. It is characterized by In particular, it is preferable that a part of the intake duct and the exhaust duct are integrally formed. In order to integrally form them, it is preferable to use columns that integrally support the intake duct and the exhaust duct. By forming it integrally, it becomes possible to assemble it at the factory before it is installed on site, and the installation work period can be shortened.

Further, it is preferable to have a predetermined gap between the intake passage and the exhaust passage which are integrally formed. There is a temperature difference between the air flowing through the intake passage and the air flowing through the exhaust passage. That is, the air flowing through the intake passage is usually
Although the temperature is almost the same as the atmospheric temperature, the air flowing through the exhaust passage is the air combusted in the combustor of the gas turbine, and therefore, although it is cooled by the turbine, it has a temperature of about several hundred degrees. Therefore, it is preferable to form the passages with a predetermined gap rather than directly forming the passages in which the flowing air temperatures are significantly different.

Furthermore, the lower surface of the intake duct and the foundation surface (ground)
It is preferable to form a predetermined gap between and. When the intake passage and the exhaust passage formed integrally are formed in a factory or the like, the transportation is performed by a truck or the like. At this time, put the truck bed in the specified gap, jack up with hydraulic pressure etc. and transport the integrally formed passage (duct) to the installation site as it is and jack it down at the installation site as it is, Crane work can be reduced and the installation process can be reduced.

Further, the gas turbine equipment preferably has a gas turbine, an intake chamber for taking in the air used in the gas turbine, and an exhaust silencer formed above the intake chamber for silencing the exhaust gas from the gas turbine. .

Similar to the case where the intake duct and the exhaust duct are integrally formed, depending on the form of the plant, the intake duct and the exhaust duct do not necessarily have a vertical positional relationship. A combination of an air chamber (intake chamber) and an exhaust duct, an exhaust silencer formed in the air chamber and an exhaust passage, an intake duct and an exhaust silencer, and the like can be considered. In particular, it is preferable that the air chamber and the exhaust silencer are integrally formed in terms of the plant configuration.

Further, it is preferable to install intake filter chambers on both sides of the intake chamber. Since the intake chamber supplies air, it is necessary to secure a sufficiently large area of the air supply surface.
That is, air can be taken in from three directions on the side surface of the intake chamber or from four directions including the upper surface. This method is preferable from the viewpoint that air can be sufficiently secured.

On the other hand, if the outside air is directly supplied to the gas turbine, dust or the like may be sucked in, which is not preferable. Therefore, it is necessary to provide an intake filter chamber to clean the air. It is understood that it is possible to inhale air from two side surfaces of the intake chamber, considering the height and depth of the intake filter chamber, the height of the intake chamber, and the like. By doing so, the distance from the gas turbine to the exhaust heat recovery boiler can be shortened, and the plant space can be saved.

That is, the present invention is utilized in a technique for carrying in and installing a part of the intake duct, the exhaust duct, the intake filter chamber, the piping and the like at a predetermined equipment installation position.

According to the present invention, it is possible to manufacture the intake duct, the exhaust duct, the pipe support and the pipe of the plant, and the intake filter chamber and the pipe support and the pipe together. It is possible to carry in and install the intake duct and the exhaust duct without using the conventional method of transporting each by a transport vehicle, hoisting at a predetermined position with a lifting machine, and hanging on each foundation. It was The same applies to the intake filter chamber.

The piping installation method is systematized without using the conventional method of installing a piping rack independent of the duct and the air filter chamber at a predetermined outdoor location and installing it on the piping rack. It can be installed as an integral part.

In the present invention, the upper and lower intake ducts and exhaust ducts are integrally formed. Piping supports and piping are also integrally formed in the gaps and both sides of the integrally formed ducts. In addition, the pipe support and the pipe are integrally formed on the upper part of the intake filter chamber.

Further, an entrance space for the transport vehicle is provided in the lower part of both ducts integrally formed and in the lower part of the intake filter chamber. And it may have the following features.

(1) Carry both integrally formed ducts at the same time and install them at the same time. (2) Carry both integrally formed ducts at the same time and install them at the same time, and then install the intake filter chambers on both sides. Installation, (3) There is a gap for the truck to enter in the lower part of both ducts formed integrally, (4) There is a gap for the truck to enter in the lower part of the intake filter chamber. (5) Have pipes in the gap between both integrally formed ducts, (6) Have pipe supports on both sides of both integrally formed ducts, (7) Have both sides of both integrally formed ducts (8) Both ducts integrally formed, the pipe support and the pipe are simultaneously transported and installed at the same time, (9) The pipe support is provided above the intake filter chamber, (10) ) Intake intake Have piping on the piping support above the filter chamber, and (11) Transport the intake filter chamber, piping support and piping at the same time and install them at the same time.

According to the present invention, the work is simplified as much as possible,
We were able to provide a technology that matches the current work environment in order to reduce the amount of actual work locally.

According to the present invention, the intake duct and the exhaust duct are integrally formed, and the pipe support and the pipe are integrally formed on the integrally formed product so that they are manufactured, carried in, and installed at the same time. By integrally forming the piping support, the intake filter chamber, piping support, and piping were simultaneously manufactured, carried in, and installed to simplify the work and reduce the actual work amount on site.

[0029]

In the method of installing the gas turbine duct described above, the integrally formed intake duct and exhaust duct, and the pipe support and pipe can be carried in and installed at one time. Next, the integrally formed intake filter chamber, the pipe support, and the pipe can be carried in and installed at one time.

Furthermore, when installing both ducts and the intake filter chamber, the lifting and lowering work by the lifting machine can be omitted.

Further, the production and installation work of the piping rack can be omitted, and the installation space of the piping rack can be eliminated.

[0032]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 9. In this embodiment, a gas turbine is mounted on a mount, an intake passage for supplying air to the gas turbine is formed below the mounting surface, and an exhaust passage for guiding exhaust gas from the gas turbine is formed above the intake passage. In the above gas turbine equipment, the present invention relates to a gas turbine equipment having a structure in which at least a part of an intake passage and an exhaust passage are integrally formed.

FIG. 1 is a side view showing an embodiment of a gas turbine facility according to the present invention. 1 is a turbine building in which main equipment of a thermal power plant is arranged, 2 is a generator, 3 is a low pressure steam turbine directly connected to the generator 2, 4 is a high pressure steam turbine directly connected to a low pressure steam turbine, and 5 is low pressure steam A condenser connected directly below the turbine 3 for returning steam to water, 6
Is a gas turbine directly connected to the high-pressure steam turbine 4, 7 is an intake chamber that is connected to the gas turbine 6 and takes in air used by the gas turbine 6, and 8 is connected to the gas turbine 6, and is connected to an exhaust passage of the gas turbine 6. The exhaust diffuser, 9 is a reinforced concrete structure that has a solid structure in consideration of static load and dynamic load, and is a pedestal in which an intake passage for supplying air to the gas turbine 6 from below is formed, and 10 is an intake passage in the pedestal 9. Special coating consisting of undercoating carboline 195 surfacer and topcoating carboline 890 to prevent concrete from scattering, 11 is installed on the gas turbine 6 side in the intake passage of the pedestal 9 and parts such as parts and debris Trash screen with a mesh structure of φ1.6 wire provided to prevent foreign matter from being sucked in, 12 is a stand 9 The intake silencer is installed outside the trash screen 11 in the intake passage of the gas turbine 6 and has a structure in which a sound absorbing material such as rock wool is incorporated in a panel shape in order to attenuate the radiated sound of the gas turbine 6. Connected to the intake silencer 12 in the intake tunnel,
An intake duct serving as a passage for supplying air to the gas turbine 6, 14 is arranged outside the turbine building 1, is connected to the intake duct 13, and is an intake chamber serving as a passage for supplying air to the gas turbine 6, and 17 is an intake chamber. 14 is disposed above and is connected to the exhaust dephasor 8 to serve as a passage for the exhaust gas from the gas turbine 6, and a sound absorbing material such as rock wool is incorporated into the inside thereof in order to attenuate the radiated sound of the gas turbine 6. An exhaust silencer having a structure, 18 is a frame that supports the intake chamber 14 and the exhaust silencer 17 arranged above and below, 19 is connected to the exhaust silencer 17, an exhaust duct serving as an exhaust passage, 20 is connected to the exhaust duct, This is an exhaust heat recovery boiler that uses the exhaust gas from the gas turbine 6 to generate steam by heat exchange. The exhaust heat recovery boiler is connected to the chimney through the flue.

FIG. 2 is a plan view showing an embodiment of the gas turbine equipment according to the present invention. Reference numerals 15 and 16 are intake filter chambers that are arranged outside the turbine building 1, are connected to the intake chamber 14, and are provided internally with a filter facility for removing dust in the air.

In the present invention, the intake chambers 14 arranged vertically are provided.
The exhaust silencer 17 and the exhaust silencer 17 are integrally formed by the frame 18. The intake filter chambers 15 and 16 are connected to the exhaust duct 1
Since there is no space below 9, they are arranged on both sides of the intake chamber 14.

FIG. 3 is a view showing an embodiment in which the intake chamber and the exhaust silencer according to the present invention are integrally formed. 14 is
It is an intake chamber that serves as a passage for supplying air to the gas turbine. An exhaust silencer 17 is formed on the intake chamber and guides exhaust gas from the gas turbine to the exhaust heat recovery boiler. 1
Reference numeral 8 is a frame that vertically supports the intake chamber 14 and the exhaust silencer 17. The frame 18 has a structure in which the legs 18 </ b> A are raised so that the transport vehicle can enter below the intake chamber 14. Further, the receiving beam 18B is configured to apply the load of the intake chamber 14 and the exhaust silencer 17 to the bed of the carrier. Further, a structure having a predetermined gap between the intake chamber 14 and the exhaust silencer 17, which are located above and below, is provided in order to reduce the influence of exhaust gas at 500 ° C.

FIG. 4 shows the intake chamber 1 integrally formed by the frame 18.
It is a figure which shows the Example which conveyed 4 and the exhaust silencer 17. Reference numeral 21 is a carrier for the intake chamber 14 and the exhaust silencer 17, which are integrally formed. In this embodiment, two vehicles 21 are arranged in parallel between the legs 18A of the frame. Carrier 2
1 has a loading platform 21A that moves up and down by a hydraulic jack. The carrier 21 enters under the beam 18B of the frame with the loading platform 21A lowered. After the approach, the loading platform 21A is raised and brought into contact with the receiving beam 18B of the frame to raise the frame 18, the intake chamber 14 and the exhaust silencer 17. In this state, intake chamber 1
4 and the exhaust silencer 17 are arranged. After arriving at the arrangement position, the frame 18 is lowered by lowering the loading platform 21A.
Also, the intake chamber 14 and the exhaust silencer 17 can be lowered onto the foundation. After that, the carrier 2 with the loading platform 21A lowered
1 retreats, and the simultaneous loading of the integrally formed intake chamber 14 and exhaust silencer 17 is completed. As shown in FIG. 1, the intake chamber 14 and the exhaust silencer 17 arranged at predetermined positions by the transport vehicle 21 are connected to the intake duct 13 and the exhaust silencer 17 is connected to the exhaust dephasor 8. Then, as shown in FIG. 2, the intake filter chambers 15 and 16 are installed on both sides of the intake chamber 14.

FIG. 5 shows the intake filter chamber 15 according to the present invention.
It is the figure which showed the example of formation of 16 and. Reference numerals 15 and 16 are intake filter chambers. 22 is the intake filter chamber 15, 1
It is a frame that supports 6. The frame 22 has a structure in which the legs 22A are raised so that the transport vehicle 21 can enter below the intake filter chambers 15 and 16. Further, the receiving beam 22B is configured to apply the load of the intake filter chambers 15 and 16 to the loading platform 21A of the transport vehicle 21.

FIG. 6 is a diagram showing an embodiment in which the intake filter chambers 15 and 16 are transported. In this embodiment, the carrier 21
One is placed between the leg portions 22A of the frame, and is installed at a predetermined position by a method similar to the method of carrying the integrally formed intake chamber 14 and exhaust silencer 17. The intake filter chambers 15 and 16 arranged at predetermined positions are connected to the intake chamber 14.

FIG. 7 shows, as a second method of the present invention, an embodiment in which the gap between the intake chamber 14 and the exhaust silencer 17, which are integrally formed, is utilized to integrally form the intake chamber 14, the exhaust silencer 17, the pipe support and the pipe. FIG. Reference numeral 23 is a pipe support, and 24 is a pipe connected to the exhaust heat recovery boiler 20. In the gap between the intake chamber 14 and the exhaust silencer 17,
A piping support 23 is installed using the frame 18. By installing the pipe 24 connected to the exhaust heat recovery boiler 20 on the upper part of the pipe support 23, the pipe 24 can be integrally formed. According to this method, the intake chamber 14, the exhaust silencer 17, and the pipe 24 can be simultaneously carried in and installed.

FIG. 8 shows a third method of the present invention in which both sides of the intake chamber 14 and the exhaust silencer 17, which are integrally formed, are used, and the intake chamber 14, the exhaust silencer 17, the pipe support and the pipe are integrally formed. It is a figure which shows an example. 25
Is a pipe support, and 26 is a pipe connected to the exhaust heat recovery boiler 20. Piping supports 25 are installed on both sides of the exhaust silencer 17, and piping 26 is provided on the upper side of the piping support 25.
Can be integrally formed by installing. According to this method, the intake chamber 14, the exhaust silencer 17, and the pipe 26 can be simultaneously carried in and installed.

FIG. 9 shows an intake filter chamber 1 according to the present invention.
It is a figure which shows the Example which integrally formed 5, 16 and a piping support and piping. Reference numeral 27 is a pipe support, and 28 is a pipe connected to the exhaust heat recovery boiler 20. Intake filter chamber 1
The pipe support 27 can be integrally formed by installing the pipe support 27 on the upper portions of the pipes 5, 16 and installing the pipe 28 on the upper portion of the pipe support 27. According to this method, the intake filter chambers 15 and 16 and the pipe 28 can be simultaneously loaded and installed.

In the above embodiment, the intake chamber 1
4, the exhaust silencer 17, the intake filter chamber 15,
In the above description, the pipe support and the pipe are integrally formed with respect to 16, but the pipe may be removed from the integral formation. In this case, the piping will be installed later.

In the design of the plant, the intake filter chamber may not be arranged on both sides of the intake chamber as in the present embodiment, but may be replaced with the intake chamber and installed at the position of the intake chamber. In this case, the intake filter chamber and the exhaust silencer are integrally formed on the upper and lower sides so that they can be carried in and installed at the same time as in this embodiment.

[0045]

As described above, according to the present invention, by integrally forming the intake chamber and the exhaust silencer, it is possible to carry in and install both ducts at the same time on the site, so that the working time can be shortened. You can Further, since the entrance space for the transport vehicle is provided by the frame at both ducts and the lower part of the intake filter chamber, it is possible to eliminate the hoisting and hoisting work using the lifting machine. Furthermore, by integrally forming both ducts, the pipe support and the pipe, and integrally forming the intake filter chamber, the pipe support and the pipe, there is an effect that a pipe rack that is manufactured and installed independently is not necessary. In addition, since it is possible to carry in and install the pipes all at once, it is very effective in simplifying the work and reducing the actual work volume at the site.

[Brief description of drawings]

FIG. 1 is a sectional view showing a gas turbine facility of the present invention.

FIG. 2 is a plan view showing a gas turbine facility of the present invention.

FIG. 3 is an integrally formed view of an intake chamber and an exhaust silencer according to an embodiment of the present invention.

FIG. 4 is a diagram of the intake chamber and the exhaust silencer that are integrally formed.

FIG. 5 is a view showing the intake filter chamber of the present invention formed elevated.

FIG. 6 is a drawing of the intake filter chamber carried in.

FIG. 7 is an integrally formed view in which a pipe is installed between an intake chamber and an exhaust silencer.

FIG. 8 is an integrally formed view in which pipes are installed on both sides of the exhaust silencer.

FIG. 9 is an integrally formed view in which a pipe is installed above an intake filter chamber.

[Explanation of symbols]

1 ... Turbine building, 2 ... Generator, 3 ... Low pressure steam turbine, 4 ... High pressure steam turbine, 5 ... Condenser, 6 ... Gas turbine, 7 ... Gas turbine intake chamber, 8 ... Exhaust diffuser, 9 ... Stand, 10 … Special coating, 11… Trash screen, 12… Intake silencer, 13… Intake duct, 1
4 ... Intake chamber, 15, 16 ... Intake filter chamber, 17 ... Exhaust silencer, 18 ... Frame, 19 ... Exhaust duct, 20 ... Exhaust heat recovery boiler, 21 ... Transport vehicle, 22 ... Intake filter chamber frame, 23, 25, 27 ... Piping support, 24, 26, 2
8 ... Piping.

Claims (5)

[Claims] 1. An exhaust system in which a gas turbine is mounted on a pedestal, an intake passage for supplying air to the gas turbine is installed below the mounting surface, and exhaust gas from the gas turbine is introduced above the intake passage. A gas turbine facility having a passage, wherein at least a part of the intake passage and the exhaust passage are integrally formed. 2. The gas turbine equipment according to claim 1, wherein a predetermined gap is provided between the intake passage and the exhaust passage formed integrally. 3. The gas turbine equipment according to claim 1, wherein a predetermined gap is provided below the intake passage. 4. A gas turbine facility having a gas turbine, an intake chamber for taking in air used in the gas turbine, and an exhaust silencer formed above the intake chamber to guide exhaust gas from the gas turbine. 5. The gas turbine equipment according to claim 4, wherein intake filter chambers are installed on both sides of the intake chamber.