Solar thermal power generation facility

Patent metadata

Field	Value
Publication number	US-11060424-B2
Application number	US-201816629450-A
Country	US
Kind code	B2
Filing date	Jul 4, 2018
Priority date	Jul 12, 2017
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

Provided is a solar thermal power generation facility that includes: a compressor; a medium heating heat receiver that receives sunlight and heats a compressed medium from the compressor; a turbine that is driven by the compressed medium heated by the medium heating heat receiver; a power generator that generates electric power by driving of the turbine; and a tower that supports these components. The compressor, the turbine, and the power generator are formed as arranged devices. A plurality of the arranged devices are aligned in a vertical direction.

First claim

The invention claimed is:

1. A solar thermal power generation facility comprising:
a compressor configured to compress a working medium to generate a compressed medium;
a medium heating heat receiver, which is a heat receiver, configured to receive sunlight to heat the compressed medium;
a turbine configured to be driven by the compressed medium heated by the medium heating heat receiver;
a power generator configured to generate electric power by driving the turbine;
an exhausted heat recovery boiler configured to heat water with an exhausted medium that is the working medium exhausted from the turbine and convert the water into steam;
a steam turbine configured to be driven by steam from the exhausted heat recovery boiler;
a steam condenser configured to return steam exhausted from the steam turbine to water;
a feed line configured to guide water inside the steam condenser to the exhausted heat recovery boiler;
a heat accumulation material that is capable of accumulating heat of the steam from the exhausted heat recovery boiler;
an auxiliary feed line that branches off from the feed line;
a steam generator that is connected to the auxiliary feed line, has a heat transfer pipe that is in contact with the heat accumulation material and is capable of exchanging heat between the water from the auxiliary feed line and the heat accumulation material, is configured to heat the water by the heat accumulation material, and is configured to convert the water into steam;
an auxiliary steam line configured to guide the steam generated by the steam generator to the steam turbine; and
a tower configured to support the compressor, the medium heating heat receiver, the turbine, and the power generator,
wherein the compressor has a compressor rotor that is rotated about a compressor axis extending in a vertical direction, and a compressor casing that covers the compressor rotor,
the turbine has a turbine rotor that is rotated about a turbine axis extending in the vertical direction, and a turbine casing that covers the turbine rotor,
the compressor rotor and the turbine rotor are mechanically connected to constitute a gas turbine rotor,
the power generator has a power generator rotor that is mechanically connected to the gas turbine rotor and is rotated about a power generator axis extending in the vertical direction, and a power generator casing that covers the power generator rotor,
the compressor, the turbine, and the power generator are formed as arranged devices, and
a plurality of the arranged devices are aligned in the vertical direction.

2. The solar thermal power generation facility according to claim 1 , wherein:
the compressor casing has an inlet into which the working medium flows, and the turbine casing has an outlet that discharges the working medium that is the compressed medium; and
the solar thermal power generation facility comprises a circulatory line configured to guide the working medium, which is discharged from the outlet of the turbine casing, from the inlet of the compressor casing into the compressor casing.

3. The solar thermal power generation facility according to claim 1 , wherein:
the compressor casing has an inlet into which the working medium flows, and the exhausted heat recovery boiler has a discharge port that discharges the working medium that is the exhausted medium; and
the solar thermal power generation facility comprises a circulatory line configured to guide the working medium, which is discharged from the discharge port of the exhausted heat recovery boiler, from the inlet of the compressor casing into the compressor casing.

4. The solar thermal power generation facility according to claim 2 , comprising a pressure regulating mechanism provided on the circulatory line and configured to regulate a pressure inside the circulatory line.

5. The solar thermal power generation facility according to claim 1 , wherein:
the exhausted heat recovery boiler is formed as an arranged device; and
the plurality of arranged devices including the exhausted heat recovery boiler are aligned in the vertical direction.

6. The solar thermal power generation facility according to claim 1 , wherein:
the steam turbine has a steam turbine rotor that is rotated about a steam turbine axis extending in the vertical direction, and a steam turbine casing that covers the steam turbine rotor;
the steam turbine is formed as an arranged device; and
the plurality of arranged devices including the steam turbine are aligned in the vertical direction.

7. The solar thermal power generation facility according to claim 6 , wherein:
the steam turbine rotor is mechanically connected to the power generator rotor; and
the solar thermal power generation facility comprises a clutch configured to switch a connected state between the gas turbine rotor and the power generator rotor between a transmitted state in which motive power transmission is possible and an untransmitted state in which motive power transmission is not conducted between the gas turbine rotor and the power generator rotor.

8. The solar thermal power generation facility according to claim 7 , wherein:
the compressor and the turbine are disposed on one of an upper side in the vertical direction and a lower side in the vertical direction on the basis of the power generator;
the steam turbine is disposed on the other of the upper side in the vertical direction and the lower side in the vertical direction on the basis of the power generator; and
the solar thermal power generation facility comprises a clutch configured to switch a connected state between the steam turbine rotor and the power generator rotor between a transmitted state in which motive power transmission is possible and an untransmitted state in which motive power transmission is not conducted between the steam turbine rotor and the power generator rotor.

9. The solar thermal power generation facility according to claim 1 , wherein:
the steam condenser has a water storage in which, after the steam exhausted from the steam turbine is returned to the water, the water is capable of being stored;
the water storage is formed as an arranged device; and
the plurality of arranged devices including the water storage are aligned in the vertical direction.

10. The solar thermal power generation facility according to claim 1 , wherein:
the turbine is disposed above the compressor; and
the exhausted heat recovery boiler is disposed above the turbine.

11. The solar thermal power generation facility according to claim 1 , wherein:
the tower has a plurality of structures for supporting the arranged devices; and
one of the plurality of structures is formed of the heat accumulation material.

12. The solar thermal power generation facility according to claim 1 , comprising heliostats, each of which has a reflector that reflects sunlight and a mirror driving machine that changes a direction of the reflector such that the sunlight reflected by the reflector is directed to the heat receiver.

13. A solar thermal power generation facility comprising:
a compressor configured to compress a working medium to generate a compressed medium;
a medium heating heat receiver, which is a heat receiver, configured to receive sunlight to heat the compressed medium;
a turbine configured to be driven by the compressed medium heated by the medium heating heat receiver;
a power generator configured to generate electric power by driving the turbine;
an exhausted heat recovery boiler configured to heat water with an exhausted medium that is the working medium exhausted from the turbine and convert the water into steam;
a steam

Assignees

• Mitsubishi Hitachi Power Sys
• Mitsubishi Power Ltd

Inventors

• Umaya Masahide
• Ota Masato
• Nagafuchi Naoyuki
• Kishibe Tadaharu
• Marumoto Takahiro
• Kurita Masato

Classifications

• F02C6/18

  using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants (using waste heat as source of energy for refrigeration plants F25B27/02; using the waste heat of a gasturbine for steam generation or in a steam cycle see F01K23/10) · CPC title

• F01K23/16

  all the engines being turbines (F01K23/14 takes precedence) · CPC title

• F01K11/02

  the engines being turbines · CPC title

• F02C7/20

  Mounting or supporting of plant; Accommodating heat expansion or creep · CPC title

• F02C1/05

  characterised by the type or source of heat, e.g. using nuclear or solar energy · CPC title