CN119712242A - Compressed air energy storage power generation system based on light energy concurrent heating and application method thereof - Google Patents
Compressed air energy storage power generation system based on light energy concurrent heating and application method thereof Download PDFInfo
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Abstract
The invention relates to a compressed air energy storage power generation system based on light energy complementary heat, and belongs to the technical field of energy storage power generation. The system comprises a first tank body for storing cold water and a second tank body for storing hot water, wherein a cold water pipeline and a hot water pipeline are communicated between the first tank body and the second tank body, a compressor unit is communicated with a gas storage unit through a high-pressure pipeline, the high-pressure pipeline is sequentially connected with a gas-water heat exchange unit and a heat dissipation unit, the cold water pipeline is connected with the gas-water heat exchange unit, a turbine generator unit is communicated with the gas storage unit through an air supply pipeline, the air supply pipeline is sequentially connected with the gas-water heat exchange unit and a heat supplementing unit, the hot water pipeline is connected with the gas-water heat exchange unit, the heat supplementing unit comprises a heat supplementing bin, a heating bin and a solar photo-thermal module, the air supply pipeline is connected with the heat supplementing bin, the heating bin is connected with the solar photo-thermal module, and the turbine generator unit further comprises a conveying module and a plurality of heat storage blocks, and the heat storage blocks are all arranged on the conveying module.
Description
Technical Field
The invention belongs to the technical field of energy storage and power generation, and particularly relates to a compressed air energy storage and power generation system based on light energy complementary heat.
Background
Compressed air energy storage is a mechanical energy storage power generation technology, and a plurality of MW-level demonstration projects are currently used for grid-connected power generation in China. The compressed air energy storage is divided into two technical routes of non-afterburning type and afterburning type, the compression heat generated in the compression process is collected by the heat accumulator in the compression stage, the compression heat collected by the heat accumulator is used for heating high-pressure air to push the air turbine to work and generate power in the expansion stage, and the whole air energy storage and energy release cycle can achieve self-balance of heat. Because the heat and the temperature accumulated in the compression process are limited, in order to improve the power and the efficiency of the compressed air energy storage power station, the afterburning type compressed air energy storage technology can be adopted, namely, a combustion chamber is additionally arranged at the inlet side of an air turbine, the compressed air is heated by utilizing high-temperature flue gas generated by fuel combustion, and the air turbine inlet temperature and the enthalpy value are increased by introducing an external heat source, so that the purpose of improving the power and the efficiency of the compressed air energy storage power station is achieved.
In the prior art, fossil fuel is used as a heat source for the energy storage of the afterburning type compressed air, carbon emission and environmental protection problems exist, and the current green low-carbon development theme is not met, so that a green heat source capable of replacing the combustion heat of the fossil fuel is searched, and a compressed air system is introduced in a heat supplementing mode, so that the energy storage power station has important significance in improving the power and efficiency of the compressed air energy storage power station. At present, a method for supplementing heat to compressed air by using solar heat is developed in the related art, however, a heat conducting medium used in a solar heat supplementing system is molten salt, so that not only is the risk of volatilization, but also the risk of solidification is present, particularly in cold areas, when no solar light is applied at night, the molten salt is more easily solidified, and therefore, the molten salt is sometimes heated to be melted before starting.
Disclosure of Invention
The invention provides a compressed air energy storage power generation system based on light energy concurrent heating, which is used for solving the technical problems that a heat source for concurrent heating of compressed air in the existing compressed air energy storage power generation system is unreasonable in arrangement and thermal energy conducting medium of concurrent heating is not properly selected.
The invention is realized by the following technical scheme that the compressed air energy storage power generation system based on light energy concurrent heating comprises:
The device comprises a first tank body for storing cold water and a second tank body for storing hot water, wherein a cold water pipeline is communicated between an outlet of the first tank body and an inlet of the second tank body, and a hot water pipeline is communicated between an outlet of the second tank body and an inlet of the first tank body;
The compressor unit is communicated with the gas storage unit through a high-pressure pipeline, the high-pressure pipeline is sequentially connected with the gas-water heat exchange unit and the heat dissipation unit, the cold water pipeline is connected with the gas-water heat exchange unit, the gas-water heat exchange unit is used for transferring heat energy of compressed air flowing in the high-pressure pipeline to cold water flowing in the cold water pipeline, and the heat dissipation unit is used for cooling the compressed air flowing in the high-pressure pipeline;
the turbine generator set is communicated with the gas storage unit through a gas supply pipeline, the gas supply pipeline is sequentially connected with a water-gas heat exchange unit and a heat supplementing unit, the hot water pipeline is connected with the water-gas heat exchange unit, and the water-gas heat exchange unit is used for transferring heat energy of hot water flowing in the hot water pipeline to air flowing in the gas supply pipeline;
The heat supplementing unit comprises a heat supplementing bin, a heating bin and a solar photo-thermal module, wherein the air supply pipeline is connected with the heat supplementing bin, the heating bin is connected with the solar photo-thermal module, the solar photo-thermal module is used for collecting heat energy of sunlight and transmitting the heat energy to the heating bin, the heat supplementing unit further comprises a conveying module and a plurality of heat storage blocks, and the heat storage blocks are all arranged on the conveying module so as to drive the heat storage blocks to move back and forth between the heating bin and the heat supplementing bin by utilizing the conveying module;
when the heat storage block is positioned in the heating bin, the heat storage block is heated through heat energy transferred by the solar photo-thermal module;
When the heated heat storage block is positioned in the heat supplementing bin, the heat storage block releases heat to heat the air circulated in the air supply pipeline.
Further, in order to better realize the invention, the heat storage block is of a porous hollow block structure.
Further, in order to better implement the present invention, it further includes:
the heat preservation bin is used for preserving heat of the heat storage block body heated by the heating bin;
the conveying module is a ring-type conveyor, and the heating bin, the heat preservation bin and the heat supplementing bin are sequentially arranged on a conveying path of the ring-type conveyor.
Further, in order to better implement the present invention, the thermal insulation bin includes:
The shell is provided with openings on two sides, and the ring conveyor is arranged in the openings in a penetrating way;
the heat preservation layer is arranged on the outer wall of the shell;
The temperature detector is arranged in the shell and is used for detecting the temperature of the heat storage block body in the heat preservation bin.
Further, in order to better implement the present invention, the solar photo-thermal module includes:
a concentrating mirror and a heat collector which are matched for use to collect solar heat energy;
the air inlet pipe is provided with a booster fan;
One end of the air outlet pipe is communicated with the heating bin;
the heating pipe is communicated between the air inlet pipe and the air outlet pipe, and is connected with the heat collector so as to heat air circulating in the heating pipe by using the heat collector.
Further, in order to better realize the invention, the turbine generator set comprises a first generator and a second generator, the air supply pipeline comprises a first air supply pipe and a second air supply pipe, and the number of the water-gas heat exchange units is two;
the first air supply pipe is communicated and arranged between the inlet of the first generator and the outlet of the air storage unit, and is connected with one of the water-gas heat exchange units;
The second air supply pipe is communicated between the outlet of the first generator and the inlet of the second generator, and is connected with the other water-gas heat exchange unit;
The first air supply pipe and the second air supply pipe are both arranged in the heat supplementing bin in a penetrating mode.
Further, in order to better realize the invention, the compressor unit comprises a first compressor and a second compressor, the high-pressure pipeline comprises a first high-pressure pipe and a second high-pressure pipe, and the number of the gas-water heat exchange units is two;
The first high-pressure pipe is communicated and arranged between the outlet of the first compressor and the inlet of the second compressor, and is connected with one of the gas-water heat exchange units;
the second high-pressure pipe is communicated and arranged between the outlet of the second compressor and the inlet of the gas storage unit, and the second high-pressure pipe is sequentially connected with the other gas-water heat exchange unit and the heat dissipation unit.
Further, in order to better implement the present invention, the heat dissipating unit includes a cooling tower and a first heat exchanger, the cooling tower is connected to the first heat exchanger through a first water pipe, and the second high pressure pipe is also connected to the first heat exchanger, wherein the first heat exchanger is used for transferring heat energy of compressed air flowing in the second high pressure pipe to cold water flowing in the first water pipe.
Further, in order to better realize the invention, the cooling tower is connected with a second heat exchanger through a second water pipe, the hot water pipeline is also connected with the second heat exchanger, and the second heat exchanger is positioned between the water-gas heat exchange unit and the first tank body, wherein the second heat exchanger is used for transferring the heat energy of the hot water flowing in the hot water pipeline to the cold water flowing in the second water pipe so as to enable the water entering the first tank body to be the cold water.
The invention also provides a using method of the compressed air energy storage power generation system based on the light energy concurrent heating, which comprises the following steps:
the air is compressed by a compressor unit to obtain high-temperature and high-pressure compressed air;
The compressed air from the compressor unit is conveyed to the air storage unit by utilizing a high-pressure pipeline, and is cooled by the air-water heat exchange unit and the heat dissipation unit in sequence to form low-temperature high-pressure compressed air when conveyed in the high-pressure pipeline, and heat in the compressed air is transferred to cold water flowing in the cold water pipeline at the air-water heat exchange unit so as to raise the temperature of water flowing into the second tank body from the first tank body;
The compressed air from the air storage unit is conveyed to the turbine generator set by utilizing the air supply pipeline, the compressed air is heated by the water-gas heat exchange unit and the heat supplementing unit in sequence to form high-temperature and high-pressure compressed air when conveyed in the air supply pipeline, and at the water-gas heat exchange unit, the heat of hot water flowing in the hot water pipeline is transferred to the compressed air flowing in the air supply pipeline, so that the temperature of water flowing in the first tank body from the second tank body is reduced, wherein the heat supplementing unit obtains heat from sunlight through the solar photo-thermal module to heat a heat storage block arranged in the heating bin, and the heated heat storage block is conveyed to the heat supplementing bin by virtue of the conveying module to heat the compressed air flowing in the air supply pipeline.
Compared with the prior art, the invention has the following beneficial effects:
The compressed air energy storage power generation system based on the light energy heat compensation provided by the invention compresses air through the compressor unit to obtain high-temperature and high-pressure compressed air, the high-pressure pipeline is utilized to convey the compressed air to the gas storage unit for storage, the compressed air is cooled to form low-temperature and high-pressure compressed air through the air-water heat exchange unit and the heat dissipation unit when conveyed in the high-pressure pipeline, so that the air entering the gas storage unit is low-temperature and high-pressure compressed air, the air-water heat exchange unit conducts heat of the compressed air to the cold water pipeline to cool the compressed air in the high-pressure pipeline, and meanwhile, water in the cold water pipeline is heated, so that the water flowing into the second tank body from the first tank body flows into the second tank body to heat the turbine compressor unit through the air supply pipeline to generate power, and the compressed air stored in the gas storage unit is low-temperature and high-pressure because the compressed air stored in the gas storage unit is sequentially heated through the air heat exchange unit and the heat supplementing unit when conveyed in the gas supply pipeline, and the water-water heat exchange unit is heated to form high-temperature compressed air, and the water-water heat exchange unit transfers heat of the compressed air flowing out of the second tank body to the cold water pipe, and the heat in the cold water pipe is heated by the hot water pipe, and the heat storage unit is heated by the heat in the hot water supply pipeline, and the heat storage module is heated by the heat when the heat is conveyed to the heat in the hot water tank through the heat pipeline, and the heat storage module and the heat module.
Like this, this compressed air energy storage power generation system can effectively utilize the heat of compressed air that compressor unit came out to with this heat come preliminary heating from the compressed air of gas storage unit to turbine generator unit, energy-concerving and environment-protective, moreover, this system can also effectively utilize solar light heat energy to carry out the heat filling to the compressed air from the gas storage unit to turbine generator unit, so that the temperature of the compressed air that gets into turbine generator unit is higher, and solar light heat energy is through the heat storage block heat conduction to the air supply pipeline who carries compressed air, heat storage block heat storage temperature is high, heat storage density is big, heat storage cost is low, have the advantage that heat conduction is good, heat conduction efficiency is high, can not cause the pollution to the environment moreover, the condition such as phase transition can not appear in the use yet, therefore more rationally.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a compressed air energy storage power generation system based on light energy concurrent heating according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of a thermal insulation silo in an embodiment of the invention;
Fig. 3 is a flowchart of a method for using the compressed air energy storage power generation system based on light energy complementary heat provided in embodiment 2 of the present invention.
In the figure:
the heat-dissipating device comprises a first tank body, a second tank body, a 3-cold water pipeline, a 4-hot water pipeline, a 5-first compressor, a 6-second compressor, a 7-first high-pressure pipe, a 8-second high-pressure pipe, a 9-gas storage unit, a 10-gas-water heat exchange unit, a 11-cooling tower, a 12-first heat exchanger, a 13-first water pipe, a 14-second water pipe, a 15-second heat exchanger, a 16-first generator, a 17-second generator, a 18-first air supply pipe, a 19-second air supply pipe, a 20-water-gas heat exchange unit, a 21-heat supplementing bin, a 22-heating bin, a 23-conveying module, a 24-heat storage block, a 25-heat preservation bin, a 251-shell, a 252-heat preservation layer, a 253-temperature detector, a 26-light-gathering reflector, a 27-heat collector, a 28-air inlet pipe, a 29-booster fan, a 30-air outlet pipe, a 31-heating pipe, a 32-first water pump, a 33-second water pump and 34-equipment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, based on the examples herein, which are within the scope of the invention as defined by the claims, will be within the scope of the invention as defined by the claims.
Example 1:
The embodiment provides a compressed air energy storage power generation system based on light energy concurrent heating, as shown in fig. 1, which comprises a first tank body 1, a second tank body 2, a cold water pipeline 3, a hot water pipeline 4, a compressor unit, a high pressure pipeline, a gas storage unit 9, a gas-water heat exchange unit 10, a heat dissipation unit, a turbine generator unit, an air supply pipeline, a water-gas heat exchange unit 20 and a concurrent heating unit, wherein:
The first tank 1and the second tank 2 are both containers for storing water, and of course, heat transfer oil may be used instead of the above water. The first tank 1 is used for storing cold water, and the second tank 2 is used for storing hot water. The cold water pipe 3 is communicated between the outlet of the first tank 1and the inlet of the second tank 2, so that cold water in the first tank 1 is guided to the second tank 2, and it is easy to understand that the cold water pipe 3 is provided with a first water pump 32, and the first water pump 32 enables water flow in the cold water pipe 3. The hot water pipe 4 is disposed between the inlet of the first tank 1and the outlet of the second tank 2, so as to guide the hot water in the second tank 2 into the first tank 1, and it is easy to understand that the hot water pipe 4 is provided with a second water pump 33, and the second water pump 33 enables water to flow in the hot water pipe 4.
The compressor unit is used for compressing air so that the air becomes high-temperature and high-pressure compressed air, and the high-pressure pipeline is actually an air duct and is communicated between an outlet of the compressor unit and an inlet of the air storage unit 9. The air storage unit 9 is used for storing compressed air as in the prior art, so that detailed description thereof will not be provided here. The high-pressure pipeline is sequentially connected with the air-water heat exchange unit 10 and the heat dissipation unit, the cold water pipeline 3 is also connected with the air-water heat exchange unit 10, at the air-water heat exchange unit 10, the high-pressure pipeline is attached to the cold water pipeline 3, part of heat energy of compressed air flowing in the high-pressure pipeline is transferred to cold water flowing in the cold water pipeline 3, so that the temperature of the compressed air flowing in the high-pressure pipeline is reduced, water flowing in the cold water pipeline 3 is heated, the heated water in the cold water pipeline 3 flows into the second tank body 2, the temperature of the compressed air after the temperature of the air-water heat exchange unit 10 is reduced is still higher, therefore, the high-pressure pipeline is also connected with the heat dissipation unit, and the heat dissipation unit is utilized to further cool the compressed air flowing in the high-pressure pipeline, so that the compressed air finally entering the air storage unit 9 is in a low-temperature high-pressure state, and the storage requirement of the storage unit is met.
The turbine generator set generates electricity by using compressed air, and the compressed air can be directly discharged into the atmosphere after coming out of the turbine generator set. The turbine generator set is communicated with the gas storage unit 9 through a gas supply pipeline, specifically, the gas supply pipeline is also a gas guide pipe, the gas supply pipeline is communicated and arranged between the outlet of the gas storage unit 9 and the inlet of the turbine generator set, so that compressed air stored in the gas storage unit 9 flows to the turbine generator set to generate electricity, and because the compressed air stored in the gas storage unit 9 is in a low-temperature high-pressure state, in order to improve the generating efficiency, the gas supply pipeline is required to be increased in the gas inlet temperature of the turbine generator set, in the embodiment, the gas supply pipeline is sequentially connected with a hydrothermal heat exchange unit and a heat supplementing unit, the hot water pipeline 4 is also connected with the water vapor heat exchange unit 20, at the position of the water vapor heat exchange unit 20, the hot water pipeline is attached to the hot water pipeline 4, so that heat energy of hot water flowing in the hot water pipeline 4 is transferred to low-temperature high-pressure compressed air flowing in the gas supply pipeline, the compressed air flowing in the gas supply pipeline is primarily heated, the water temperature of the hot water pipeline is reduced, water flowing in the pipeline 4 is required to be increased, and water flowing in the pipeline 4 is required to enter the first tank 1, and the water in the heat supplementing unit is still heated in the gas heat exchange unit through the initial heat pipeline, and the hot water pipeline is still heated in the gas supply pipeline.
The heat supplementing unit comprises a heat supplementing bin 21, a heating bin 22, a solar photo-thermal module, a conveying module 23 and a plurality of heat storage blocks 24, so that when the heat storage blocks 24 are positioned in the heating bin 22, the heating bin 22 is connected with the solar photo-thermal module, the solar photo-thermal module is used for collecting the heat energy of sunlight and transmitting the heat energy to the heating bin 22, the plurality of heat storage blocks 24 are sequentially arranged on the conveying module 23 to be conveyed along with the conveying module 23, the conveying module 23 is connected with the heat supplementing bin 21 and the heating bin 22, and therefore, by means of the conveying module 23, the heat storage blocks 24 can move back and forth between the heating bin 22 and the heat supplementing bin 21, when the heat storage blocks 24 are positioned in the heating bin 22, the heat energy transmitted to the heating bin 22 through the solar photo-thermal module is heated to heat the blocks 24, so that the temperature of the blocks 24 is increased, the heated blocks 24 are conveyed into the heat supplementing bin 21 by the conveying module 23, the air supply pipeline penetrates through the heat supplementing bin 21 and is attached to the heat storage blocks 24, and the heat storage blocks are compressed by the heat storage blocks in the heat storage unit, and the heat storage blocks are compressed by the heat storage blocks 20, and the heat storage blocks are compressed by the heat exchange unit, and the air is compressed by the heat storage unit.
Through the structure, the compressed air energy storage power generation system provided by the embodiment can effectively utilize the heat of the compressed air coming out of the compressor unit, and the compressed air from the air storage unit 9 to the turbine generator unit is primarily heated by the heat, so that the system is energy-saving and environment-friendly, and the compressed air from the air storage unit 9 to the turbine generator unit can be subjected to heat supplementing by effectively utilizing solar heat energy, so that the temperature of the compressed air entering the turbine generator unit is higher, the solar heat energy is conducted to an air supply pipeline for conveying the compressed air through the heat storage block 24, the heat storage temperature of the heat storage block 24 is high, the heat storage density is high, the heat storage cost is low, the advantages of good heat conduction and high heat conduction efficiency are achieved, the environment is not polluted, the phase change and the like can not occur in the use process, and the system is more reasonable.
Note that the gas-water heat exchange unit 10 described in the present embodiment refers to heat transfer from gas to water at the heat exchange unit, and the water-gas heat exchange unit 20 refers to heat transfer from water to gas at the heat exchange unit.
An alternative implementation manner of this embodiment is that the heat storage block 24 is in a porous hollow block structure, so that the surface area of the heat storage block 24 is larger, and the heat storage capacity is better. Specifically, the heat storage block 24 may be hollow rock, refractory brick, or the like.
An alternative implementation manner of this embodiment is that the heat storage device further comprises a heat preservation bin 25 for preserving heat of the heat storage block 24 heated by the heating bin 22, wherein the heating bin 22, the heat preservation bin 25 and the heat supplementing bin 21 are sequentially arranged on a conveying path of the conveying module 23, so that the heat storage block 24 is conveyed to the heat preservation bin 25 to preserve heat along with the conveying module 23 after the heating bin 22 is heated, and then conveyed to the heat supplementing bin 21 by the conveying module 23 to convey compressed air flowing in a heating air supply pipeline.
The thermal insulation bin 25 is arranged, so that heat loss in the process of conveying the heat storage blocks 24 from the heating bin 22 to the heat supplementing bin 21 can be reduced, more importantly, the thermal insulation bin 25 is arranged to be large enough, so that a plurality of heated heat storage blocks 24 can be stored in the thermal insulation bin 25, when sunlight exists, a large number of heat storage blocks 24 can be heated by utilizing the sunlight and stored in the thermal insulation bin 25 for standby, and on overcast days or at night, the heat storage blocks 24 stored in the thermal insulation bin 25 can be used, so that the situation that the heat supplementing unit cannot work on overcast days or at night is avoided. For example, a storage area for storing the heat storage blocks 24 is provided in the thermal insulation bin 25, and as a result, the conveying module 23 removes the excessive high-temperature heat storage blocks 24 sent from the heating bin 22 from the conveying module 23 by a worker or a machine and places the excessive high-temperature heat storage blocks 24 in the storage area for standby, and on a cloudy day or at night, places the stored high-temperature heat storage blocks 24 on the conveying module 23 to be further conveyed to the heat supplementing bin 21. It should be noted that, for the sake of clarity of the drawing, the thermal insulation bin 25 shown in the drawing is not drawn to scale.
The above-mentioned conveying module 23 is a loop conveyor, so that the conveying module 23 can not only convey the heat storage block 24 heated by the heating bin 22 to the heat preservation bin 25 and convey the heat storage block 24 stored in the heat preservation bin 25 to the heat supplementing bin 21, but also can convey the heat storage block 24 cooled by the heat supplementing bin 21 back to the heating bin 22, thereby circularly heating and using the heat storage block 24.
Of course, the transport module 23 may be a linear conveyor, and in this case, the heat storage block 24 cooled in the heat compensating chamber 21 needs to be manually transported to the transport start of the transport module 23.
Optionally, as shown in fig. 2, the thermal insulation bin 25 includes a housing 251, a thermal insulation layer 252, and a temperature detector 253, where:
Openings are formed in two sides of the shell 251, the ring conveyor penetrates through the openings, the heat insulation layer 252 is arranged on the outer wall or the inner wall of the shell 251, the temperature detector 253 is arranged in the shell 251, and the temperature detector 253 is used for detecting the temperature of the heat storage block 24 in the heat insulation bin 25.
The heating chamber 22 and the heat compensating chamber 21 may have the same structure as the thermal insulation chamber 25, and the air supply line may penetrate through the housing 251 of the heat compensating chamber 21 and even inside the heat compensating chamber 21.
An alternative implementation manner of this embodiment is as follows, where the solar photo-thermal module includes a light collecting reflector 26, a heat collector 27, an air inlet pipe 28, an air outlet pipe 30, and a heating pipe 31, where:
the light-gathering reflector 26 and the heat collector 27 are used together to collect solar heat energy, and the light-gathering reflector 26 and the heat collector 27 are all of the prior art, so detailed descriptions thereof are omitted herein.
The air inlet pipe 28 is provided with a booster fan 29, the booster fan 29 sends air into the air inlet pipe 28 when in operation, one end of the air outlet pipe 30 is communicated with the heating bin 22, the heating pipe 31 is communicated between the air inlet pipe 28 and the air outlet pipe 30, and the heating pipe 31 is connected with the heat collector 27 so as to heat the air circulated in the heating pipe 31 by the heat collector 27.
In this way, the solar heat energy collected by the heat collector 27 heats the air flowing through the heating pipe 31, and the air is guided by the air outlet pipe 30, so that the air heated in the heating pipe 31 enters the heating bin 22 to heat the heat storage block 24 positioned in the heating bin 22.
As another alternative implementation of the present embodiment, in the present embodiment, the heat collector 27 is directly contacted with the heat storage block 24, so that the heat storage block 24 is directly heated by using the heat collector 27.
An alternative implementation manner of this embodiment is as follows, the turbine generator set includes a first generator 16 and a second generator 17, the air supply pipeline includes a first air supply pipe 18 and a second air supply pipe 19, the number of the water-gas heat exchange units 20 is two, the first air supply pipe 18 is disposed between the inlet of the first generator 16 and the outlet of the air storage unit 9 in a communicating manner, the first air supply pipe 18 is connected with one of the water-gas heat exchange units 20, the second air supply pipe 19 is disposed between the outlet of the first generator 16 and the inlet of the second generator 17 in a communicating manner, the second air supply pipe 19 is connected with the other water-gas heat exchange unit 20, and the first air supply pipe 18 and the second air supply pipe 19 are both disposed in the heat supplementing bin 21 in a penetrating manner.
The compressed air from the air storage unit 9 is guided to enter the first generator 16 through the first air supply pipe 18, the compressed air flowing in the first air supply pipe 18 is subjected to heat exchange with the hot water in the hot water pipeline 4 through the first water-gas heat exchange unit 20, so that the temperature is initially raised, the temperature is raised again after the heat is supplemented by the heat supplementing unit, so that the temperature of the compressed air entering the first generator 16 is higher, the compressed air from the first generator 16 is guided to the second generator 17 through the second air supply pipe 19, the compressed air flowing in the second air supply pipe 19 is subjected to heat exchange with the hot water in the hot water pipeline 4 through the second water-gas heat exchange unit 20, so that the temperature is initially raised, the temperature is raised again after the heat is supplemented by the heat supplementing unit, and the temperature of the compressed air entering the second generator 17 is higher. Thus, the two generators can more effectively utilize the compressed air energy to generate electricity, and the electricity generation efficiency is higher.
Of course, the turbine generator set may also be a generator or a plurality of generators connected in series.
An alternative implementation manner of this embodiment is that the compressor unit includes a first compressor 5 and a second compressor 6, the high-pressure pipeline includes a first high-pressure pipe 7 and a second high-pressure pipe 8, the number of the air-water heat exchange units 10 is two, the first high-pressure pipe 7 is communicated between an outlet of the first compressor 5 and an inlet of the second compressor 6, the first high-pressure pipe 7 is connected with one of the air-water heat exchange units 10, the second high-pressure pipe 8 is communicated between an outlet of the second compressor 6 and an inlet of the air storage unit 9, and the second high-pressure pipe 8 is sequentially connected with the other air-water heat exchange unit 10 and the heat dissipation unit.
The compressed air from the first compressor 5 has certain pressure and heat, the compressed air from the first compressor 5 is guided to the inlet of the second compressor 6 through the first high-pressure pipe 7, the compressed air flowing in the first high-pressure pipe 7 exchanges heat with cold water flowing in the cold water pipe 3, so that the compressed air entering the second compressor 6 has certain pressure but lower temperature, the second compressor 6 further pressurizes the compressed air to form high-pressure and high-temperature compressed air, the high-pressure and high-temperature compressed air is sent to the air storage unit 9 through the second high-pressure pipe 8, and when the compressed air flows in the second high-pressure pipe 8, the high-temperature and high-pressure compressed air exchanges heat with the cold water flowing in the cold water pipe 3, and after the compressed air is primarily cooled, the heat is further dissipated by the heat dissipation unit to low-temperature and high-pressure. In this way, the pressure of the compressed air entering the air storage unit 9 can be made higher to be more suitable for the turbine generator set to generate electricity.
Of course, the compressor package may also include more compressors in series.
An alternative implementation manner of this embodiment is that the heat dissipating unit includes a cooling tower 11 and a first heat exchanger 12, the cooling tower 11 is connected to the first heat exchanger 12 through a first water pipe 13, the second high-pressure pipe 8 is also connected to the first heat exchanger 12, specifically, the first water pipe 13 and the second high-pressure pipe 8 are attached to each other in the first heat exchanger 12, so that heat energy of the compressed air flowing in the second high-pressure pipe 8 is transferred to cold water flowing in the first water pipe 13, the first water pipe 13 returns the water to the cooling tower 11 for cooling, and the cooled water is then sent to the first heat exchanger 12 for internal circulation, thereby performing better cooling on the compressed air flowing in the second high-pressure pipe 8.
Of course, the heat dissipating unit may be any other structure capable of cooling, such as an air conditioner, an air cooler, and ice cubes.
More preferably, the cooling tower 11 is connected to a second heat exchanger 15 through a second water pipe 14, the hot water pipe 4 is also connected to the second heat exchanger 15, and the second heat exchanger 15 is located between the water-gas heat exchange unit 20 and the first tank 1, specifically, the second water pipe 14 and the hot water pipe 4 are attached to each other in the second heat exchanger 15, so that heat energy of hot water flowing through the hot water pipe 4 is transferred to cold water flowing through the second water pipe 14, and hot water flowing through the hot water tank is further reduced, so that the water entering the first tank 1 is guaranteed to be cold water, and heat exchange between water exiting from the first tank 1 and the high-pressure pipe is more convenient. The water in the second pipe is heated and then flows back to the cooling tower 11 for cooling, and the water cooled by the cooling tower 11 flows into the second pipe again.
Example 2:
this embodiment provides a method of using the compressed air energy storage power generation system for light energy reheat as described in embodiment 1, as shown in fig. 3, the method comprising:
the air is compressed by a compressor unit to obtain high-temperature and high-pressure compressed air;
The compressed air from the compressor unit is conveyed to the air storage unit 9 by a high-pressure pipeline, and is cooled by the air-water heat exchange unit 10 and the heat dissipation unit in sequence to form low-temperature high-pressure compressed air when conveyed in the high-pressure pipeline, and heat in the compressed air is transferred to cold water flowing in the cold water pipeline 3 at the air-water heat exchange unit 10 so as to raise the temperature of water flowing from the first tank 1 into the second tank 2;
The compressed air from the air storage unit 9 is conveyed to the turbine generator set by the air supply pipeline, the compressed air is heated by the water-gas heat exchange unit 20 and the heat supplementing unit in sequence to form high-temperature and high-pressure compressed air when conveyed in the air supply pipeline, and at the water-gas heat exchange unit 20, the heat of hot water flowing in the hot water pipeline 4 is transferred to the compressed air flowing in the air supply pipeline, so that the temperature of water flowing into the first tank 1 from the second tank 2 is reduced, wherein the heat supplementing unit obtains heat from sunlight through the solar photo-thermal module to heat the heat storage block 24 arranged in the heating bin 22, and the heated heat storage block 24 is conveyed to the heat supplementing bin 21 by the conveying module 23 to heat the compressed air flowing in the air supply pipeline.
When the compressor unit in this embodiment includes the first compressor 5 and the second compressor 6, the high-pressure pipeline includes the first high-pressure pipe 7 and the second high-pressure pipe 8, the number of the air-water heat exchange units 10 is two, the turbine generator unit includes the first generator 16 and the second generator 17, the air supply pipeline includes the first air supply pipe 18 and the second air supply pipe 19, and the number of the water-air heat exchange units 20 is two, a specific implementation manner of this embodiment is as follows:
The first compressor 5 is used for compressing the atmospheric air to 4.5MPa, the temperature of the compressed air reaches 210 ℃, then the temperature of the compressed air is reduced to 40 ℃ after the compressed air is cooled by one air-water heat exchange unit 10, then the compressed air enters the second compressor 6 for further compression, the pressure of the compressed air reaches 9.0MPa, the temperature reaches 210 ℃, then the compressed air enters the other air-water heat exchange unit 10 for cooling, the temperature of the compressed air of 9.0MPa is reduced to 75 ℃, and then the temperature of the compressed air of 9.0MPa is reduced to 38 ℃ after the heat is dissipated by the heat dissipation unit, so that the compressed air with high pressure and low temperature is formed and enters the air storage unit 9 for storage.
At the heat supplementing unit, air from the atmosphere is pressurized by a booster fan 29 and then enters a heating pipe 31, the heating pipe 31 is heated by a heat collector 27 to form high-temperature air at about 600 ℃, the high-temperature air at 600 ℃ is sent into a heating bin 22, so that the heat storage block 24 in the heating bin 22 is baked, the temperature of the heat storage block 24 reaches about 580 ℃, the air cooled by the heating bin 22 still has about 200 ℃, the air is discharged into the atmosphere after being cooled by a heat dissipating device 34, and the heat storage block 24 heated to about 580 ℃ is conveyed into a heat preservation bin 25 by a conveying module 23 to be stored or is directly sent into the heat supplementing bin 21.
The high-pressure low-temperature compressed air stored in the air storage unit 9 is sent to the first generator 16 through the first air supply pipe 18, the pressure of the high-pressure low-temperature compressed air from the air storage unit 9 is 8.2MPa, the temperature is 45 ℃, the Chinese air which is initially heated to 190 ℃ through the water-gas heat exchange unit 20 in the first air supply pipe 18 is heated through the heat storage block 24 of the heat supplementing bin 21,580 ℃ of the heat supplementing unit, the temperature of the compressed air in the first air supply pipe 18 reaches 400 ℃, then the compressed air with the pressure of 8.2MPa and the temperature of 400 ℃ enters the first generator 16 to expand and do work to generate electricity, and then the compressed air is sent out from the first generator 16 and sent to the second generator 17 through the second air supply pipe 19, the temperature of the compressed air from the first generator 16 is reduced to 50 ℃, the pressure is reduced to 4.2MPa, then after the other water-gas heat exchange unit 20 acts, the temperature of the compressed air in the second air supply pipe 19 reaches 190 ℃, then the heat storage block 24 heats the second air supply pipe 19 through the heat supplementing bin 21 of the heat supplementing unit, so that the temperature of the compressed air in the second air supply pipe 19 reaches 400 ℃, then the compressed air with the pressure of 4.2MPa and the temperature of 400 ℃ enters the second generator 17 to expand and do work to generate electricity, and finally the compressed air is discharged to the atmosphere from the outlet of the second generator 17, and the pressure of the gas discharged from the outlet of the second generator 17 is 0.1MPa, and the temperature is 50 ℃.
The above description is merely an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present invention, and it is intended to cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A compressed air energy storage power generation system based on light energy concurrent heating, comprising:
A cold water pipeline (3) is communicated between an outlet of the first tank body (1) and an inlet of the second tank body (2), and a hot water pipeline (4) is communicated between an outlet of the second tank body (2) and an inlet of the first tank body (1);
the compressor unit is communicated with the gas storage unit (9) through a high-pressure pipeline, the high-pressure pipeline is sequentially connected with the gas-water heat exchange unit (10) and the heat dissipation unit, the cold water pipeline (3) is connected with the gas-water heat exchange unit (10), the gas-water heat exchange unit (10) is used for transferring heat energy of compressed air flowing in the high-pressure pipeline to cold water flowing in the cold water pipeline (3), and the heat dissipation unit is used for cooling the compressed air flowing in the high-pressure pipeline;
The turbine generator set is communicated with the gas storage unit (9) through an air supply pipeline, the air supply pipeline is sequentially connected with a water-air heat exchange unit (20) and a heat supplementing unit, the hot water pipeline (4) is connected with the water-air heat exchange unit (20), and the water-air heat exchange unit (20) is used for transferring heat energy of hot water flowing in the hot water pipeline (4) to air flowing in the air supply pipeline;
The solar energy heat supplementing unit comprises a heat supplementing bin (21), a heating bin (22) and a solar energy photo-thermal module, wherein the air supply pipeline is connected with the heat supplementing bin (21), the heating bin (22) is connected with the solar energy photo-thermal module, the solar energy photo-thermal module is used for collecting heat energy of sunlight and transmitting the heat energy to the heating bin (22), the heat supplementing unit further comprises a conveying module (23) and a plurality of heat storage blocks (24), the heat storage blocks (24) are all arranged on the conveying module (23) so as to drive the heat storage blocks (24) to move back and forth between the heating bin (22) and the heat supplementing bin (21) by utilizing the conveying module (23);
When the heat storage block (24) is positioned in the heating bin (22), the heat storage block (24) is heated through heat energy transferred by the solar photo-thermal module;
When the heated heat storage block (24) is positioned in the heat supplementing bin (21), the heat storage block (24) releases heat to heat the air circulated in the air supply pipeline.
2. The compressed air energy-storage power generation system based on light energy reheat according to claim 1, wherein:
the heat storage block body (24) is of a porous hollow block structure.
3. The compressed air energy-storage power generation system based on light energy reheat according to claim 1 or 2, further comprising:
the heat preservation bin (25) is used for preserving heat of the heat storage block (24) heated by the heating bin (22);
The conveying module (23) is a ring-type conveyor, and the heating bin (22), the heat preservation bin (25) and the heat supplementing bin (21) are sequentially arranged on a conveying path of the ring-type conveyor.
4. A compressed air energy-storage power generation system based on light energy reheat according to claim 3, characterized in that the thermal insulation silo (25) comprises:
the shell (251) is provided with openings on both sides, and the ring conveyor is arranged in the openings in a penetrating way;
a heat-insulating layer (252) provided on the outer wall of the housing (251);
And the temperature detector (253) is arranged in the shell (251), and the temperature detector (253) is used for detecting the temperature of the heat storage block (24) in the heat preservation bin (25).
5. The compressed air energy storage power generation system based on light energy reheat according to claim 1 or 2, wherein the solar photo-thermal module includes:
a light-gathering reflector (26) and a heat collector (27) which are matched for gathering solar heat energy;
An air inlet pipe (28) provided with a booster fan (29);
One end of the air outlet pipe (30) is communicated with the heating bin (22);
The heating pipe (31) is communicated between the air inlet pipe (28) and the air outlet pipe (30), and the heating pipe (31) is connected with the heat collector (27) so as to heat the air flowing in the heating pipe (31) by using the heat collector (27).
6. The compressed air energy-storage power generation system based on light energy reheat according to claim 1 or 2, characterized in that:
The turbine generator set comprises a first generator (16) and a second generator (17), the air supply pipeline comprises a first air supply pipe (18) and a second air supply pipe (19), and the number of the water-gas heat exchange units (20) is two;
The first air supply pipe (18) is communicated and arranged between the inlet of the first generator (16) and the outlet of the air storage unit (9), and the first air supply pipe (18) is connected with one of the water-gas heat exchange units (20);
The second air supply pipe (19) is communicated and arranged between the outlet of the first generator (16) and the inlet of the second generator (17), and the second air supply pipe (19) is connected with the other water-gas heat exchange unit (20);
The first air supply pipe (18) and the second air supply pipe (19) are both arranged in the heat supplementing bin (21) in a penetrating mode.
7. The compressed air energy-storage power generation system based on light energy reheat of claim 6, wherein:
The compressor unit comprises a first compressor (5) and a second compressor (6), the high-pressure pipeline comprises a first high-pressure pipe (7) and a second high-pressure pipe (8), and the number of the gas-water heat exchange units (10) is two;
the first high-pressure pipe (7) is communicated and arranged between the outlet of the first compressor (5) and the inlet of the second compressor (6), and the first high-pressure pipe (7) is connected with one of the air-water heat exchange units (10);
the second high-pressure pipe (8) is communicated and arranged between the outlet of the second compressor (6) and the inlet of the gas storage unit (9), and the second high-pressure pipe (8) is sequentially connected with the other gas-water heat exchange unit (10) and the heat dissipation unit.
8. The compressed air energy-storage power generation system based on light energy reheat of claim 7, wherein:
The heat dissipation unit comprises a cooling tower (11) and a first heat exchanger (12), the cooling tower (11) is connected with the first heat exchanger (12) through a first water pipe (13), the second high-pressure pipe (8) is also connected with the first heat exchanger (12), wherein the first heat exchanger (12) is used for transferring heat energy of compressed air flowing in the second high-pressure pipe (8) to cold water flowing in the first water pipe (13).
9. The compressed air energy-storage power generation system based on light energy reheat of claim 8, wherein:
The cooling tower (11) is connected with a second heat exchanger (15) through a second water pipe (14), the hot water pipeline (4) is also connected with the second heat exchanger (15), and the second heat exchanger (15) is positioned between the water-gas heat exchange unit (20) and the first tank body (1), wherein the second heat exchanger (15) is used for transferring the heat energy of hot water flowing in the hot water pipeline (4) to cold water flowing in the second water pipe (14), so that water entering the first tank body (1) is cold water.
10. A method of use of the light energy reheat based compressed air energy storage power generation system of any one of claims 1 to 9, comprising:
the air is compressed by a compressor unit to obtain high-temperature and high-pressure compressed air;
Compressed air from the compressor unit is conveyed to the air storage unit (9) by utilizing a high-pressure pipeline, and is cooled by the air-water heat exchange unit (10) and the heat dissipation unit in sequence to form low-temperature high-pressure compressed air when conveyed in the high-pressure pipeline, and heat in the compressed air is transferred to cold water flowing in the cold water pipeline (3) at the air-water heat exchange unit (10) so as to raise the temperature of water flowing into the second tank (2) from the first tank (1);
Compressed air from the air storage unit (9) is conveyed to the turbine generator set by utilizing an air supply pipeline, the compressed air is heated by the water-air heat exchange unit (20) and the heat supplementing unit in sequence to form high-temperature and high-pressure compressed air when conveyed in the air supply pipeline, and at the water-air heat exchange unit (20), the heat of hot water flowing in the hot water pipeline (4) is transferred to the compressed air flowing in the air supply pipeline so as to reduce the temperature of the water flowing in the first tank (1) from the second tank (2), wherein the heat supplementing unit obtains heat from sunlight through the solar photo-thermal module to heat a heat storage block (24) arranged in the heating bin (22) and conveys the heated heat storage block (24) to the heat supplementing bin (21) by virtue of the conveying module (23) to heat the compressed air flowing in the air supply pipeline.
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| CH413883A (en) * | 1963-09-02 | 1966-05-31 | Siemens Ag | Heat exchange device using mass particles as a heat carrier |
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| CN115773215A (en) * | 2022-12-01 | 2023-03-10 | 中国电力工程顾问集团西北电力设计院有限公司 | ORC-Coupled Solar-thermal Supplementary Compressed Air Energy Storage System and Method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH413883A (en) * | 1963-09-02 | 1966-05-31 | Siemens Ag | Heat exchange device using mass particles as a heat carrier |
| US20110100010A1 (en) * | 2009-10-30 | 2011-05-05 | Freund Sebastian W | Adiabatic compressed air energy storage system with liquid thermal energy storage |
| JP2012239370A (en) * | 2011-04-13 | 2012-12-06 | Toshiaki Ota | Distributed compressed-air storage power generating system |
| WO2017057144A1 (en) * | 2015-09-29 | 2017-04-06 | 株式会社神戸製鋼所 | Compressed air storage power generating device and compressed air storage power generation method |
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