JP2014145321A - Power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power generator which can suppress the energy to be consumed for power generation.SOLUTION: A power generator includes a heat storage part 10 that stores a heat medium to be heated, a boiler 4 that is provided adjacent to the heat storage part 10 and converts circulating water into steam by heat from the heat storage part 10, a turbine 5 that is driven by the steam generated from the boiler 4, and a main generator 6 that is directly connected to the turbine 5.

Description

  The present invention relates to a power generator. More specifically, for example, the present invention relates to a power generation apparatus using oil or coal fossil fuel as a main raw material.

  Conventionally, there exists a thing described in patent document 1, for example as this kind of electric power generating apparatus. Specifically, a boiler facility that converts water circulated into steam using a burner that uses gas, heavy oil, coal, etc. as fuel, a turbine facility that is driven by steam generated from the boiler facility, and a turbine facility It consists of a directly connected generator facility and a condensate facility that returns steam back to water.

JP 2005-341797 A

  However, in the thermal power generation apparatus described in Patent Document 1, energy necessary for power generation such as gas, heavy oil, and coal is continuously consumed. Therefore, the amount of energy required for power generation increases.

  The present invention has been devised in view of the above points, and an object of the present invention is to provide a power generation device capable of suppressing energy consumed for power generation.

  In order to achieve the above object, a power generation device according to the present invention includes a heat storage unit in which a heat medium to be heated is stored, and water that is provided adjacent to the heat storage unit and circulates with heat from the heat storage unit. A boiler that converts the steam into steam, a turbine that is driven by steam generated from the boiler, and a generator that is directly connected to the turbine.

  Here, the heat storage unit in which the heat medium to be heated is stored, and the boiler that is provided adjacent to the heat storage unit and converts water circulated by the heat from the heat storage unit into steam is heated to the set temperature. Thereafter, the water circulating in the boiler can be converted into steam by the heat stored in the heat medium.

  Further, in the power generation device of the present invention, when the heat medium is a molten salt, high-temperature heat storage for a long time is possible.

  Further, in the power generation device of the present invention, when a heating medium heating unit that heats the heating medium using at least one natural energy of sunlight and wind power is provided, sunlight is used during sunshine, and wind power is more than a certain value. It is possible to heat the heat medium while there is an air volume of. Thereby, it becomes possible to maintain high temperature heat storage.

  Further, in the power generation device of the present invention, when a water supply heating unit that heats water supplied to the boiler using at least one natural energy of sunlight and wind power is provided, In the case of wind power, while the air volume exceeds a certain level, the water supplied to the boiler is heated so that it can be converted into steam with efficient thermal energy as an economizer.

  Further, in the power generation device of the present invention, the heat medium heating unit or the feed water heating unit is an electromagnetic wave generated from at least one of the electric power generated using natural energy and the electric power generated by the generator. In the case of heating using heat, it is possible to heat the heat medium (molten salt) or water supplied to the boiler in a short time, and heating control is also easy.

  According to the power generation device of the present invention, it is possible to suppress energy consumed for power generation.

It is a schematic diagram for demonstrating the outline | summary of an example of the thermal power plant equipment using the electric power generating apparatus to which this invention is applied. It is a side surface schematic diagram for demonstrating an example of the electric power generating apparatus to which this invention is applied. It is a plane schematic diagram for demonstrating an example of the electric power generating apparatus to which this invention is applied. It is a schematic diagram for demonstrating an example of the electric power generation form in the electric power generating apparatus to which this invention is applied. It is a schematic diagram explaining an example of the process of 1 day in the electric power generating apparatus to which this invention is applied.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic diagram for explaining an outline of an example of a thermal power plant facility using a power generator to which the present invention is applied, and FIG. 2 is a schematic side view for explaining an example of a power generator to which the present invention is applied. FIG. 3 is a schematic plan view for explaining an example of a power generator to which the present invention is applied.

  In the thermal power plant facility 1 shown here, for example, when heavy oil is used as fuel, a heavy oil tank B for collecting and storing heavy oil from the heavy oil tanker A is installed on the coast. Heavy oil is conveyed from the heavy oil tank B to the power generator 2 by the pump C.

  In addition, the electric power generated by the power generation device 2 is converted into a high voltage by the transformer D and transmitted from the outdoor switch station E to the urban area through the transmission line F.

  Further, the exhaust gas discharged from the power generation device 2 is released from the collecting chimney J to the atmosphere in a state in which harmful substances are removed by the exhaust gas denitration device G, the electrostatic precipitator H and the exhaust gas desulfurization device I.

  The power generator 2 includes a furnace 3 using heavy oil as a fuel, a boiler 4, a turbine 5, a main generator 6 directly connected to the turbine 5, and condensate for circulating water between the turbine 5 and the boiler 4. The device 19 is configured.

  Here, as shown in FIG. 2 and FIG. 3, the furnace 3 includes a heat storage unit 10 and a burner 11 provided in a lower part of the heat storage unit 10. The heat storage unit 10 has a heating wall surface 8 formed at a predetermined interval inside the cylinder 7 having a hexagonal cross section, and a molten heat medium is formed between the inner surface of the cylinder 7 and the heating wall surface 8. It is set as the structure in which the salt 9 was accommodated.

  Further, the bottom surface 18 and the heating wall surface 8 of the heat storage unit 10 can be heated by the flame from the burner 11.

Further, the heat storage unit 10 is provided with a molten salt supply tank 12 in communication with the molten salt supply tank 12 so that the heat storage unit 10 is filled with the molten salt 9.
Since this molten salt 9 is an ionic bond, it has a high heat storage property, and a nitrate or a mixture of fluorine, lithium, and beryllium that can maintain the performance without thermal decomposition of the molecule even at a high temperature (about 3000 ° C.) Is done.

  In addition, a boiler 4 is disposed on the upper part of the heat storage unit 10. A water supply tank 13, a turbine 5, and a condenser 19 are connected to the boiler 4 in a continuous ring shape.

  Further, a main generator 6 is directly connected to the turbine 5, and power is generated by rotating a rotor (not shown) of the main generator 6 by driving rotation of the turbine 5.

  Here, as shown in FIG. 4, a plurality of auxiliary boilers (16A, 16B, 16C, 16D, 16E, 16F) and auxiliary turbines (17A, 17B, 17C, 17D, 17E, 17F) are arranged. Further, auxiliary generators (15A, 15B, 15C, 15D, 15E, 15F) are directly connected to the auxiliary turbines (17A, 17B, 17C, 17D, 17E, 17F).

  The auxiliary turbines (17A, 17B, 17C, 17D, 17E, 17F) are connected to the water supply tank 13, the low temperature heater 20, and the condenser 19 in a continuous ring shape.

  Further, a second fluid boiler 21 is disposed in the low-temperature heater 20, and a second fluid turbine 22, a second fluid tank 23, and a second fluid condenser 24 are connected to the second fluid boiler 21 in a continuous loop. Has been.

In addition, an IH generator 25 is directly connected to the second fluid turbine 22, and a feed water heating unit 26 that is operated by electric energy generated by the IH generator 25 is disposed in the feed pipe 27.
The feed water heating unit 26 is configured by IH heating that generates and heats an electromagnetic wave with electric energy generated by the IH generator 25.
Further, the water supply tank 13 is provided with a solar heating 28 that generates heat by collecting sunlight with a lens.

The molten salt supply tank 12 of the heat storage unit 10 is provided with a heat medium heating unit 14 configured by IH heating that generates and heats electromagnetic waves with electric energy. The heat medium heating unit 14 is configured to be operated by electric energy generated by the auxiliary turbine 17F and the auxiliary generator 15F that are activated using the thermal energy of the heat storage unit 10.
The electric energy that operates the heat medium heating unit 14 includes, for example, electric energy generated by a power generation device (not shown) using natural energy such as a solar power generation device or a wind power generation device. .

  Further, solar heating 28 is disposed in the molten salt supply tank 12 of the heat storage unit 10 to generate heat by collecting sunlight with a lens.

Further, as shown in FIG. 3, the heat medium heating unit 14 (I supply molten salt in FIG. 2) is formed in the cylindrical body 7 of the heat storage unit 10 by IH heating that generates and heats electromagnetic waves with a plurality of electric energies. The heating medium heating unit 14 provided at the installation location of the use tank 12 is omitted).
As shown in FIG. 4, the heat medium heating unit 14 is configured to be operated by a part of the electric energy generated by the auxiliary generator (15A, 15B, 15C, 15D, 15E, 15F).

  In the power generator of the present invention having the above configuration, as shown in FIG. 2, hot air in a high temperature state is formed above the heat storage unit 10 while the bottom surface 18 and the heating wall surface 8 of the heat storage unit 10 are heated by the flame from the burner 11. Will blow out.

  Here, the boiler 4 disposed above the axial center of the heat storage unit 10 is heated to convert water into high-pressure steam to drive and rotate the turbine 5, and the main generator 6 directly connected to the turbine 5 Main power generation.

  In addition, as described in detail with reference to FIG. 4, the molten salt in the heat storage unit 10 is stored at a high temperature of 400 ° C. or higher so that the auxiliary boilers (16A, 16A, 16B, 16C, 16D, 16E, 16F) is converted into high pressure steam.

  The auxiliary turbines (15A, 17B, 17C, 17D, 17E, 17F) are driven and rotated by the steam, and the auxiliary generators (15A, 17B, 17C, 17D, 17E, 17F) are directly connected to these auxiliary turbines (17A, 17B, 17C, 17D, 17E, 17F). 15B, 15C, 15D, 15E, 15F).

  Moreover, the 2nd fluid accommodated in the 2nd fluid tank 23 shall be ammonia water whose boiling point is 100 degrees C or less, for example. As a result, the ammonia water is made high-pressure by the second fluid boiler 21 disposed in the low-temperature heater 20 where the steam used in the turbine 5 or the auxiliary turbines (17A, 17B, 17C, 17D, 17E, 17F) is recovered. It can be converted into steam.

  The second fluid turbine 22 is driven and rotated by the steam of the ammonia water, and the IH generator 25 generates power. Water supplied to the turbine 5 or the auxiliary turbines (17A, 17B, 17C, 17D, 17E, 17F) by the feed water heating unit 26 configured by IH heating that generates and heats electromagnetic waves by the electric energy generated by the power generation. Heat.

  In this way, it is possible to suppress the amount of heat for converting into steam by heating the water supplied to the boiler 4 and the auxiliary boilers (16A, 16B, 16C, 16D, 16E, 16F).

  Further, the water in the water supply tank 13 is heated by the solar heating 28 that generates heat by being condensed by the lens while being irradiated with sunlight.

  Thereby, the water in the water supply tank 13 is heated by the solar heating 28 and the heat medium heating unit 14 during the daytime, and is heated only by the heat medium heating unit 14 during the nighttime. Water can be heated.

  In addition, the heat medium heating unit 14 and the solar heating 28 configured by IH heating that generates and heats electromagnetic waves with electric energy generated by the auxiliary turbine 17F and the auxiliary generator 15F using the heat energy of the heat storage unit 10 The molten salt supply tank 12 of the heat storage unit 10 is heated.

  Further, as shown in FIG. 3, a plurality of heat medium heating units 14 constituted by IH heating that generates and heats electromagnetic waves by a part of electric energy generated by an auxiliary generator (not shown). Thus, the cylindrical body 7 of the heat storage unit 10 is heated.

  In this way, it is possible to maintain the molten salt as a heat medium at 400 ° C. or higher by heating the heat storage unit 10 and the molten salt supply tank 12.

Next, FIG. 5 is a schematic diagram for explaining a process for one day in the power generation apparatus to which the present invention is applied.
Here, for example, for 4 hours from the start, the bottom surface and the heating wall surface of the heat storage unit are heated by a flame from the burner with the total output. During this time, the molten salt as a heat medium is stored in a state heated to 400 ° C. or higher.

  Thereby, the boiler arrange | positioned above the thermal storage part and the some auxiliary boiler arrange | positioned around the thermal storage part are heated, water is converted into a vapor | steam, and electric power generation with a main generator and an auxiliary generator is performed.

  Subsequently, from 4 hours to 24 hours, a flame necessary for heating only the boiler disposed on the upper part of the heat storage unit is ejected from the heating burner. In addition, the auxiliary generator disposed around the heat storage unit performs auxiliary power generation with the thermal energy stored in the molten salt in the heat storage unit.

  Further, during the 24 hours, while there is wind power that rotates the windmill, power generation by the wind power generator is performed by wind power, and during solar hours, power generation by the solar power generation apparatus or heat generation by solar heating is performed.

  Heating the molten salt by operating a heating medium heating unit composed of IH heating that generates and heats electromagnetic waves by power generation using these natural energies, or heats the molten salt with thermal energy by solar heating Therefore, it is possible to maintain the heat storage while suppressing the decrease in the heat storage temperature as much as possible.

  Moreover, the amount of heat for converting to steam is kept low by heating the supplied water by operating the feed water heating unit by power generation using these natural energies, or by heating the water supplied by heat generated by solar heating. Efficient power generation.

  In addition, power generation is performed with a second fluid such as ammonia water having a boiling point of 100 ° C. or lower by utilizing the temperature in the low-temperature heater from which the steam is recovered.

  Heating the molten salt by operating a heating medium heating unit composed of IH heating that generates and heats electromagnetic waves by power generation by the second fluid, or heats the supplied water by operating the feed water heating unit.

  In this way, it is possible to reduce the energy consumed for power generation to 50% to 80% by maintaining the heat storage while keeping the temperature drop of the molten salt as low as possible.

  In the present embodiment, the heat medium is a molten salt, but the heat medium is not necessarily required to be a molten salt.

  For example, any material can be used as long as it has high heat storage without being decomposed at a high temperature. However, it is desirable to use a molten salt that has high heat storage properties and does not decompose molecules even at high temperatures (about 3000 ° C.).

  In the present embodiment, the heat medium heating unit that heats the heat medium using at least one natural energy of sunlight and wind power is provided. However, it is not always necessary to use sunlight or wind power. There is no.

  For example, it may be a heating medium heating unit using natural energy other than sunlight or wind power.

  Moreover, in this Embodiment, although the water supply heating part which heats the water supplied to a boiler using at least one natural energy among sunlight and wind power is provided, sunlight or wind power is not necessarily provided. There is no need to use it.

  For example, it may be a feed water heating unit using natural energy other than sunlight or wind power.

  In the present embodiment, the heating medium heating unit or the feed water heating unit is heated using electromagnetic waves, but is not necessarily heated using electromagnetic waves.

  For example, it may be an electric heating element made of nichrome wire or the like, but it is desirable to use IH heating that uses an electromagnetic wave that can be heated at a high temperature for a short time.

  In the present embodiment, the thermal power generation apparatus has been described as the power generation apparatus. However, the thermal power generation apparatus is not necessarily required.

  According to the power generation device of the present invention, since power is generated using heat from the heat storage unit, it is possible to suppress energy consumed for power generation.

  Moreover, it becomes possible to maintain heat storage, suppressing the fall of temperature by heating a thermal storage part using the natural energy by sunlight or a wind force.

  In addition, the amount of heat that is converted into steam can be suppressed by heating the water supplied to the boiler by using natural energy from sunlight or wind power, thereby suppressing a decrease in stored energy.

  In addition, by using the temperature in the low-temperature heater from which the steam has been collected to generate electricity with ammonia water having a boiling point of 100 ° C. or lower, the water supplied to the heat storage unit or the boiler is continuously heated. It becomes possible.

  In addition, regardless of the fossil fuel used, the system of the present invention can suppress the emission of 50% or more of carbon dioxide.

DESCRIPTION OF SYMBOLS 1 Thermal power plant equipment 2 Power generation device 3 Furnace 4 Boiler 5 Turbine 6 Main generator 7 Tubular body 8 Heating wall surface 9 Molten salt 10 Heat storage part 11 Burner 12 Molten salt supply tank 13 Water supply tank 14 Heat medium heating part 15A, 15B, 15C, 15D, 15E, 15F Auxiliary generators 16A, 16B, 16C, 16D, 16E, 16F Auxiliary boilers 17A, 17B, 17C, 17D, 17E, 17F Auxiliary turbine 18 bottom surface 19 condenser 20 low temperature heater 21 first Two-fluid boiler 22 Second fluid turbine 23 Second fluid tank 24 Second fluid condenser 25 IH generator 26 Feed water heater 27 Feed water pipe 28 Solar heating

Claims (6)

A heat storage unit containing a heat medium to be heated; and
A boiler that is provided adjacent to the heat storage unit and converts water circulated by heat from the heat storage unit into steam;
A turbine driven by steam generated from the boiler;
And a generator directly connected to the turbine. The power generation device according to claim 1, wherein the heat medium is a molten salt. The power generation device according to claim 1, further comprising a heat medium heating unit that heats the heat medium using at least one natural energy of sunlight and wind power. The heating medium heating unit heats using an electromagnetic wave generated from at least one of the electric power generated using the natural energy and the electric power generated by the generator. To power generator. The power generator according to claim 1, 2 or 3, further comprising a water supply heating unit that heats water supplied to the boiler using at least one natural energy of sunlight and wind power. The said feed water heating part heats using the electromagnetic waves produced from at least 1 electric power among the electric power generated using the said natural energy, and the electric power generated by the said generator. Power generation device.

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