JP6162424B2 - Gas turbine power plant and combined power generation facility - Google Patents

Description

The present invention relates to a gas turbine power plant and a combined power generation facility, and more particularly to a gas turbine power plant and a combined power generation facility constructed in an area where there is a lot of snowfall.

  In gas turbine equipment, the intake air taken in from an intake chamber installed outdoors is compressed by a compressor, this compressed air is combusted with fuel in a combustor, the turbine is rotated by the energy of the combustion gas, and the load on the generator is Drive the equipment.

  In gas turbine equipment constructed in areas where there is a lot of snowfall, the flow path of the intake duct that communicates with the intake side of the intake filter in order to prevent clogging of the intake filter due to snow and to prevent a decrease in the intake air flow rate of the gas turbine It has been proposed that snow is accumulated in the intake duct by defining the shape, thereby reducing the snow reaching the intake filter in the intake chamber (Patent Document 1).

JP 2000-97045 A

  However, even if the shape of the flow path is complicated to reduce the entry of snow into the intake chamber, it may not be possible to prevent the entry of snow due to the wind direction or the amount of snowfall, and snow may adhere to the intake filter and reduce the intake efficiency. There is sex.

An object of the present invention is to provide a gas turbine power plant and a combined power generation facility that can more effectively suppress the adhesion of snow to the intake filter of the intake chamber of a gas turbine power plant constructed in a snowy region. There is to do.

The present invention is characterized in that the gas turbine and the generator are arranged on the first floor of the turbine building and the intake chamber is installed on the basement floor of the turbine building.

ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to suppress more effectively the adhesion of the snow to the intake filter of an intake chamber also in the gas turbine power plant constructed in an area with much snowfall.

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

The side view which shows schematic structure of the gas turbine power plant which is one Example of this invention. The top view which shows schematic structure of the intake chamber in the gas turbine power plant which is one Example of this invention. The figure which shows the outline of apparatus arrangement | positioning of each building floor in the combined power generation equipment which is one Example of this invention.

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

  FIG. 1 shows an application of the present invention to a gas turbine facility (gas turbine power plant).

  The gas turbine 5 and the generator 6 are installed on a gas turbine / generator frame (T / G frame) 8 and are located on the first floor of the turbine building 11. The gas turbine 5 is located in the compartment 7 together with a combustor (not shown) and an air compressor (not shown).

  An intake chamber 1 for supplying air to the air compressor is arranged on the basement floor of the turbine building. The air taken into the intake chamber 1 flows through the intake duct 2, flows into the air compressor, is compressed, and is supplied to the combustor.

  The combustion gas generated in the combustor drives the gas turbine 5. The gas turbine 5 drives a load device such as a generator 6 connected to the gas turbine. The combustion gas that has worked in the gas turbine flows through the exhaust duct 9 as exhaust gas and is supplied to the exhaust heat recovery boiler (HRSG) 10. Steam generated in the exhaust heat recovery boiler is used as in-house steam, local supply steam, steam for driving a separately installed steam turbine, and the like.

  Furthermore, in this embodiment, a plurality of snow storage chambers 3 are provided on the basement floor of the turbine building 11 for storing snow that has fallen around the turbine building. Snow is put into the snow storage chamber 3 through a snow throwing / intake port 4 using a snow removal machine or the like.

  On the first floor of the turbine building 11, an intake hood 12 for taking in air in the building is provided. The air in the building taken in by the intake hood flows through the duct connected to the intake hood 12 and flows into the snow storage chamber 3. An air volume adjusting damper 13 is provided in the duct connected to the intake hood 12 to adjust the amount of air flowing into the snow storage room 3 from the building. Air from the building and air 14 from the snow inlet / inlet 4 flow into the snow storage chamber 3, and the air in the snow storage chamber 3 is blown into the intake chamber 1. An intake hood that takes air into the turbine building from the outside is provided on the building wall surface (not shown). Moreover, in FIG. 1, the code | symbol 15 is an overhead crane.

  FIG. 2 shows a plan view of the intake chamber 1. In this embodiment, it is configured to take in air from three surfaces of the intake chamber 1, and an intake filter 20 is installed on each surface. One side or two sides may be sufficient as the surface (intake filter installation surface) which takes in air. In this embodiment, since the intake chamber is installed in the turbine building, the installation of the louvers is omitted. In addition, since an air intake chamber is installed on the basement floor, the soundproofing is improved, and therefore an air intake silencer is also omitted. However, a louver or an intake silencer may be installed as necessary.

  According to the present embodiment, since the intake chamber is installed on the basement floor of the turbine building, snow does not enter the intake filter and snow does not adhere to the intake filter. By installing the intake chamber on the basement floor of the building, there is no need to surround the intake chamber with a wall. Therefore, it is possible to reliably prevent a reduction in intake efficiency due to snow.

  In this embodiment, a snow storage room is also provided on the basement floor of the building. Intake cooling is known as one of the methods for improving the power generation output of the gas turbine in summer and the like. In this embodiment, a snow storage room is installed on the basement floor for cooling the gas turbine intake in summer. In other words, the countermeasure against the intake chamber snow and the improvement of the gas turbine output are realized at the same time.

  In the winter, the snow and the outside air are taken into the snow storage room 3 installed on the basement floor of the turbine building 11 from the snow charging / intake port 4. The taken snow is stored in the snow storage chamber 3, and the outside air is used for turbine intake. The outside air taken into the snow storage chamber 3 is blown into the intake chamber 1 from a discharge port formed in the upper part of the snow storage chamber 3. In the winter season when the outside air temperature is low, only the outside air is used as the gas turbine intake air, so the air volume adjusting damper 13 is closed so as not to suck in the air in the building.

  In summer, outside air is taken in from the snow inlet / inlet 4 and indoor air is taken in from the intake hood 12 and used as gas turbine intake. The taken-in air is sent to the snow storage chamber 3, where it exchanges heat with the snow stored in the winter and is cooled. The cooled air is blown from the outlet of the intelligent snow storage chamber 3 to the intake chamber 1. In other words, heat stored in the underground snow storage room is exchanged with air in the summer to realize gas turbine intake air cooling and improve gas turbine power generation output.

  The intake air from the intake hood 12 also serves to ventilate the air in the turbine building. The intake air from the intake hood 12 is building air heated by the dissipated heat of each device of the gas turbine equipment, and the building air is taken into the snow storage room 3 to be heat-exchanged by the stored snow and cooled. Is blown into the intake chamber 1. By using the cooled air as the gas turbine intake air, the power generation output of the gas turbine 1 is improved. Then, new outside air is introduced into the turbine building and ventilated. By performing ventilation in this way, the air conditioning cost of the turbine building is reduced. Moreover, it is easy to adjust building air to a predetermined temperature. Moreover, since the indoor air can be maintained at a predetermined temperature, the ambient temperature of each device can be maintained at an appropriate temperature, and an improvement in efficiency of a heat exchanger or the like can be expected.

  FIG. 3 shows a case where the present invention is applied to a combined power generation facility. In the combined power generation facility, steam is generated by HRSG using the exhaust gas of the gas turbine facility, and the steam turbine is driven by this steam to generate power.

  In the case of gas turbine equipment, since the basement floor is not necessarily installed, it is necessary to newly form the basement floor, which may increase the cost of civil engineering. On the other hand, in the case of a combined power generation facility, an underground floor is often installed in order to install a condenser of a steam turbine facility. In this embodiment, the gas turbine equipment is combined with the power generation equipment, thereby improving the power generation output and the power generation efficiency and reducing the civil engineering cost.

  As shown in FIG. 3, gas turbine equipment (such as a gas turbine or a generator driven by the gas turbine) is arranged on the first floor of the turbine building. Steam turbine power generation facilities are arranged on the second floor of the turbine building. Steam generated in the HRSG 10 flows through the main steam pipe 100 and is supplied to the steam turbine 200, and the steam drives the steam turbine 200. Then, the steam turbine generator 300 connected to the steam turbine 200 is driven.

  The condenser 400 of the steam turbine power generation facility is introduced with exhaust steam from the final stage of the steam turbine 200. The condenser 400 is installed below the steam turbine, passes through the first floor of the turbine building 11, and the lower part is installed on the basement floor. In the basement floor where the condenser 400 is installed, the intake chamber 1 is installed together with the condenser 400. Others are the same as in the embodiment of FIGS.

  According to the present embodiment, in addition to the effects of the above-described embodiment, it is not necessary to newly form a basement floor for arranging the intake chamber, so it is possible to reduce civil engineering costs.

  In the above-described embodiment, the gas turbine has two shafts and the steam turbine has two shafts. However, the gas turbine may have one shaft and the steam turbine may have one shaft. Further, the gas turbine may have two axes and the steam turbine may have one axis. Moreover, you may make it install the arrangement | positioning of steam turbine power generation equipment on the same floor as gas turbine power generation equipment as needed. In any case, the condenser of the steam turbine power generation equipment is installed on the basement floor of the turbine building, and the intake chamber of the gas turbine equipment is also installed on the basement floor of the turbine building.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Moreover, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

1 ... Intake chamber, 2 ... Intake duct, 3 ... Snow storage room, 4 ... Snow injection and intake, 5 ... Gas turbine, 6 ... Generator, 7 ... Compartment, 8 ... T / G mount, 9 ... Exhaust duct, 10 … HRSG, 11… Turbine building, 12… Intake hood, 13… Airflow adjustment damper, 14… Air flow, 15… Overhead crane, 20… Intake filter, 100… Main steam piping, 200… Steam turbine, 300… Steam turbine Generator, 400 ... condenser.

Claims (4)

A gas turbine power plant comprising a gas turbine and a generator, wherein the gas turbine and the generator are arranged in a turbine building,
The gas turbine and the generator are installed on a base in the turbine building and arranged on the first floor of the turbine building,
An intake chamber for intake of combustion air of the gas turbine is installed on the basement floor of the turbine building, and the air flowing into the basement floor is taken into the intake chamber,
A gas turbine power plant , wherein a snow storage room is installed in a basement floor of the turbine building, and air is supplied to the intake chamber via the snow storage room . The gas turbine power plant according to claim 1 ,
A gas turbine power plant, wherein outside air and air in the turbine building are blown into the snow storage room. The gas turbine power plant according to claim 2 ,
A gas turbine power plant characterized in that the amount of air blown in the turbine building can be adjusted. A gas turbine power generation facility, a waste heat recovery boiler that generates steam using the exhaust gas of the gas turbine power generation facility as a heat source, a steam turbine power generation facility that generates power using the steam generated in the exhaust heat recovery boiler as a drive medium, and the gas turbine A combined power generation facility having a power generation facility and a turbine building in which the steam turbine power generation facility is disposed,
The gas turbine and the generator of the gas turbine power generation facility are arranged on the first floor of the turbine building,
The condenser of the steam turbine power generation facility is installed on the basement floor of the turbine building,
The intake chamber of the gas turbine power generation facility is installed on the basement floor of the turbine building, and takes in the air flowing into the basement floor,
A combined power generation facility , wherein a snow storage room is installed on a basement floor of the turbine building, and air is supplied to the intake chamber via the snow storage room .

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