CN209704778U - A kind of tower-type solar thermal power generating system - Google Patents
A kind of tower-type solar thermal power generating system Download PDFInfo
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- CN209704778U CN209704778U CN201920039459.0U CN201920039459U CN209704778U CN 209704778 U CN209704778 U CN 209704778U CN 201920039459 U CN201920039459 U CN 201920039459U CN 209704778 U CN209704778 U CN 209704778U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The utility model provides a kind of tower-type solar thermal power generating system, is made of supercritical carbon dioxide circulation loop and tower type solar light and heat collection system.Supercritical carbon dioxide circulation loop includes: main compressor, cryogenic regenerator, high temperature regenerator, high-temperature molten salt heat exchanger, turbine, low-temperature molten salt heat exchanger, recompression machine, forecooler, generator；Tower type solar light and heat collection system includes: Jing Chang, collection thermal tower, hot tank, cold tank.High temperature regenerator high temperature section is saved in the supercritical carbon dioxide circulation loop of the utility model, it is substituted with high-temperature molten salt heat exchanger and low-temperature molten salt heat exchanger, heat transfer process is solution-air heat exchange, the beneficial effect of acquisition is to greatly improve heat transfer coefficient, the cost of heat exchanger is lower, therefore the cost of the generally supercritical carbon dioxide circulatory system reduces.
Description
Technical field
The utility model relates to a kind of tower-type solar thermal power generating systems, belong to solar energy generation technology field.
Background technique
World today's environmental problem is increasingly serious, and developing green clean energy resource becomes themes of the times, solar energy, wind energy, life
The renewable energy power generations technologies such as substance energy are paid close attention to by countries in the world.Solar energy is inexhaustible, nexhaustible green energy
Source, solar energy thermal-power-generating are one of major ways of Solar use.This technology development in recent years is very rapid, more mature
Technology include tower, tower, Fresnel solar heat light and heat collection generation technology.The investment of solar energy thermal-power-generating factory and hair
Electric higher cost needs to be equipped with the heat reservoir of large capacity.In terms of commercialization, slot type and the installation of tower type solar energy thermal power generation station
Largest, economic sexual clorminance is also more preferably.
In terms of power cycle module, what slot type and tower type solar energy thermal power generation station were equipped at present is Turbo-generator Set.
In recent years, start to recycle supercritical carbon dioxide into the power plant module as solar energy thermal-power-generating station, generating efficiency in industry
It is significantly higher than Steam Turbine.The critical point of carbon dioxide is 31 DEG C/7.4MPa, the state in temperature and pressure postcritical
For above-critical state.Carbon dioxide chemistry property is stable, density is high, non-toxic, low cost, and the circulatory system is simple, compact-sized, effect
Rate is high, can be air-cooled, supercritical carbon dioxide circulation can with various combinations of sources of heat at electricity generation system, be considered thermal power generation,
The fields such as nuclear energy power generation, solar energy thermal-power-generating, cogeneration, geothermal power generation, biomass power generation all have good application prospect.
However, supercritical carbon dioxide circulation has the characteristics that depth regenerator, the capacity and cost of regenerator are very high,
The cost of especially printed circuit board type high temperature regenerator reaches 500 yuan of every kilowatt of heat or more.The prior art generallys use shunting
The supercritical carbon dioxide of recompression mode recycles, as shown in Figure 1, being used for using high temperature regenerator by turbine exhaust heat transfer
Working medium is exported to cryogenic regenerator, this heat transfer process is gas-gas heat exchange, and heat transfer coefficient is small, so high temperature regenerator heat-transfer surface
Product is very big, and cost is just high.Therefore, supercritical carbon dioxide circulation is also needed to be optimized for solar energy thermal-power-generating station is
System reduces cost.
Utility model content
The technical problems to be solved in the utility model is how to optimize the tower sun recycled using supercritical carbon dioxide
Energy heat generating system, reduces cost, plays the advantage of supercritical carbon dioxide circulation.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is to provide a kind of tower type solar energy thermal power generation system
System, it is characterised in that: be made of supercritical carbon dioxide circulation loop and solar energy light gathering and heat collecting system；
The supercritical carbon dioxide circulation loop includes main compressor, and connection cryogenic regenerator in main compressor outlet is high
Side-entrance is pressed, cryogenic regenerator high pressure side outlet connects the high pressure side-entrance of high temperature regenerator, and high temperature regenerator high pressure side outlet connects
High-temperature molten salt heat exchanger working medium import is connect, high-temperature molten salt heat exchanger sender property outlet connects turbine air inlet, the connection of turbine exhaust mouth
Low-temperature molten salt heat exchanger working medium import, turbine connect generator, and it is low that low-temperature molten salt heat exchanger sender property outlet connects high temperature regenerator
Side-entrance is pressed, high temperature regenerator low side outlets connect the side-entrance of cryogenic regenerator low pressure, and cryogenic regenerator low side outlets connect
Connect forecooler import and recompression machine import；Forecooler outlet connection main compressor；Recompression machine outlet connection cryogenic regenerator
High pressure side outlet.
The solar energy light gathering and heat collecting system includes hot tank, hot tank outlet connection high-temperature molten salt heat exchanger fused salt import,
High-temperature molten salt heat exchanger fused salt outlet connection low-temperature molten salt heat exchanger fused salt import, low-temperature molten salt heat exchanger fused salt outlet connection are cold
Tank import, the thermal-collecting tube import of cold tank outlet connection collection thermal tower, collects the thermal-collecting tube outlet even heat-connecting can import of thermal tower.
Preferably, the main compressor, recompression machine, turbine, generator coaxle arrangement.
Preferably, the forecooler is air cooler.
Preferably, heat transfer medium is equipped in the collection thermal tower.
It is highly preferred that the heat transfer medium is fused salt.
Preferably, heat-storage medium is equipped in the hot tank and cold tank.
It is highly preferred that the heat-storage medium is fused salt.
Steps are as follows for the use of tower-type solar thermal power generating system provided by the utility model:
In supercritical carbon dioxide circulation loop, carbon dioxide working medium is pressurized through main compressor, main compressor outlet
Carbon dioxide working medium enters high temperature regenerator after then converging with recompression machine outlet working medium, enters back into height through cryogenic regenerator
Temperature molten salt heat exchanger absorbs heat, enters back into turbine acting, and turbine pushing generator generates electric power, and turbine exhaust is thermally conductive through low temperature
Oil heat exchanger, high temperature regenerator, cryogenic regenerator discharge heat, are further divided into two-way, enter forecooler cooling all the way, enter back into master
Compressor, another way enter recompression machine and are pressurized to cryogenic regenerator outlet power pressure.
Heat collector absorbs solar radiation energy, the heat being converted in fused salt, and fused salt a part is delivered to hot tank for storing up
Heat, another part is delivered to high-temperature molten salt heat exchanger release heat again and gives carbon dioxide working medium, then inhales through low-temperature molten salt heat exchanger
Turbine exhaust waste heat is received, enters back into cold tank, cold tank exports fused salt to collecting thermal tower.In sunlight deficiency or night, fused salt is from warm
Tank is delivered to high-temperature molten salt heat exchanger, low-temperature molten salt heat exchanger, then is delivered to cold tank.
Preferably, the generated output of the tower-type solar thermal power generating system is MWe to hundred MWe grades.
Preferably, the main compressor outlet pressure is 15~30MPa.
Preferably, the turbine exhaust pressure is 8~10MPa.
Preferably, high-temperature molten salt heat exchanger two sides are no more than 10 DEG C close to temperature.
Preferably, low-temperature molten salt heat exchanger two sides are no more than 10 DEG C close to temperature.
Compared with prior art, it is high to eliminate high temperature regenerator for tower-type solar thermal power generating system provided by the utility model
Temperature section is substituted with high-temperature molten salt heat exchanger and low-temperature molten salt heat exchanger, heat transfer process be solution-air heat exchange, acquisition it is beneficial
Effect is to greatly improve heat transfer coefficient, the cost of heat exchanger is lower, therefore the generally supercritical carbon dioxide circulatory system is made
Valence reduces.
Detailed description of the invention
Fig. 1 is existing using the supercritical carbon dioxide circulatory system schematic diagram for shunting recompression mode；
Fig. 2 is tower-type solar thermal power generating system schematic diagram provided in this embodiment；
Description of symbols:
1-main compressor, 2-cryogenic regenerators, 3-high temperature regenerators, 4-high-temperature molten salt heat exchangers, 5-turbines, 6-
Low-temperature molten salt heat exchanger, 7-recompression machines, 8-forecoolers, 9-generators, 10-hot tanks, 11-cold tanks, 12-collection thermal towers,
13-Jing Chang.
Specific embodiment
Fig. 2 is tower-type solar thermal power generating system schematic diagram provided in this embodiment；The tower type solar energy thermal power generation
System is made of supercritical carbon dioxide circulation loop and solar energy light gathering and heat collecting system.
The supercritical carbon dioxide circulation loop includes main compressor 1, the outlet of main compressor 1 connection cryogenic regenerator
2 high pressure side-entrances, 2 high pressure side outlet of cryogenic regenerator connect the 3 high pressure side-entrance of high temperature regenerator, 3 high-pressure side of high temperature regenerator
Outlet connection 4 working medium import of high-temperature molten salt heat exchanger, 4 sender property outlet of high-temperature molten salt heat exchanger connect 5 air inlet of turbine, turbine 5
Exhaust outlet connects the 6 working medium import of low-temperature molten salt heat exchanger, and turbine 5 connects generator 9, and 6 sender property outlet of low-temperature molten salt heat exchanger connects
The 3 low pressure side-entrance of high temperature regenerator is connect, 3 low side outlets of high temperature regenerator connect 2 low pressure side-entrance of cryogenic regenerator, and low temperature returns
Hot 2 low side outlets of device are divided into two-way, are separately connected 7 import of 8 import of forecooler and recompression machine；The outlet of forecooler 8 connection master
1 import of compressor；The outlet of recompression machine 7 connection 2 high pressure side outlet of cryogenic regenerator.
The solar energy light gathering and heat collecting system includes collection thermal tower 13, hot tank 10 and cold tank 11.The hot outlet of tank 10 connection is high
The 4 fused salt import of temperature molten salt heat exchanger, 4 fused salt of high-temperature molten salt heat exchanger outlet connection 6 fused salt import of low-temperature molten salt heat exchanger, low temperature
The outlet of 6 fused salt of fused salt heat exchanging device connects cold 11 import of tank, and 12 import of collection thermal tower of the cold outlet of tank 11 connection mirror field 13 collects thermal tower 12
Outlet even 10 import of heat-connecting can.
It is connected between each equipment of system by pipeline, needs is controlled according to system, can arrange valve, fluid on pipeline
Mechanical, instrument.There are also auxiliary equipment, electrical system, I&C systems etc. for the other parts of composition system, and want to meet safety
The facility asked.
The working method of above-mentioned tower-type solar thermal power generating system is as follows:
In supercritical carbon dioxide circulation loop, carbon dioxide working medium is pressurized to 25MPa, main compression through main compressor 1
Then the carbon dioxide working medium that machine 1 exports exports after working medium is converged with recompression machine 7 through cryogenic regenerator 2 and enters high temperature backheat
Device 3 enters back into high-temperature molten salt heat exchanger 4 and absorbs heat, and temperature reaches 550 DEG C, enters back into the acting of turbine 5, and turbine 5 pushes power generation
Machine 9 generates electric power, and 5 pressure at expulsion of turbine is about 8.5MPa, through low-temperature molten salt heat exchanger 6, high temperature regenerator 3, cryogenic regenerator 2
Heat is discharged, two-way is further divided into, enters forecooler 8 all the way and is cooled to 35 DEG C, enters back into main compressor 1, another way enters presses again
Contracting machine 7 is compressed to about 25MPa.
Collect thermal tower 12 and absorb solar radiation energy, the heat being converted in fused salt, temperature is that 565 DEG C of fused salt is a part of defeated
It send to hot tank 10 for heat accumulation, another part is delivered to the release heat of high-temperature molten salt heat exchanger 4 again and gives carbon dioxide working medium, then passes through
Low-temperature molten salt heat exchanger 6 absorbs 5 exhaust heat of turbine, enters back into cold tank 11, and cold tank 11 exports fused salt to collection thermal tower 12.In sunlight
When insufficient or night, fused salt is delivered to high-temperature molten salt heat exchanger 4, low-temperature molten salt heat exchanger 6 from hot tank 10, then is delivered to cold tank
11。
The thermal efficiency of above-mentioned supercritical carbon dioxide circulation has significant advantage up to 45%.Due to eliminating high temperature
The cost of the high temperature regenerator of section, system reduces.
The above, the only preferred embodiment of the utility model, it is in any form and substantive not to the utility model
On limitation, it is noted that for those skilled in the art, in the premise for not departing from the utility model method
Under, several improvement and supplement can be also made, these are improved and supplement also should be regarded as the protection scope of the utility model.It is all ripe
Professional and technical personnel is known, in the case where not departing from the spirit and scope of the utility model, when using disclosed above
Technology contents and the equivalent variations of a little variation, modification and evolution made, be the equivalent embodiment of the utility model；Together
When, all substantial technologicals according to the utility model to the variation, modification and evolution of any equivalent variations made by above-described embodiment,
In the range of still falling within the technical solution of the utility model.
Claims (7)
1. a kind of tower-type solar thermal power generating system, it is characterised in that: gathered by supercritical carbon dioxide circulation loop and solar energy
Light collecting system composition；
The supercritical carbon dioxide circulation loop includes main compressor (1), main compressor (1) outlet connection cryogenic regenerator
(2) high pressure side-entrance, cryogenic regenerator (2) high pressure side outlet connect high temperature regenerator (3) high pressure side-entrance, high temperature regenerator
(3) high pressure side outlet connects high-temperature molten salt heat exchanger (4) working medium import, and high-temperature molten salt heat exchanger (4) sender property outlet connects turbine
(5) air inlet, turbine (5) exhaust outlet connect low-temperature molten salt heat exchanger (6) working medium import, and turbine (5) connects generator (9), low
Temperature molten salt heat exchanger (6) sender property outlet connects high temperature regenerator (3) low pressure side-entrance, and high temperature regenerator (3) low side outlets connect
Cryogenic regenerator (2) low pressure side-entrance is connect, cryogenic regenerator (2) low side outlets connect forecooler (8) import and recompression machine
(7) import；Forecooler (8) outlet connection main compressor (1) import；Recompression machine (7) outlet connection cryogenic regenerator (2) high pressure
Side outlet；
The solar energy light gathering and heat collecting system includes hot tank (10), and hot tank (10) outlet connection high-temperature molten salt heat exchanger (4) is molten
Salt import, high-temperature molten salt heat exchanger (4) fused salt outlet connection low-temperature molten salt heat exchanger (6) fused salt import, low-temperature molten salt heat exchanger
(6) fused salt outlet connects cold tank (11) import, cold tank (11) outlet connection collection thermal tower (12) import, collection thermal tower (12) outlet connection
Hot tank (10) import.
2. a kind of tower-type solar thermal power generating system as described in claim 1, it is characterised in that: the main compressor (1), again
Compressor (7), turbine (5), generator (9) are coaxially arranged.
3. a kind of tower-type solar thermal power generating system as described in claim 1, it is characterised in that: the forecooler (8) is sky
Cooler.
4. a kind of tower-type solar thermal power generating system as described in claim 1, it is characterised in that: set in the collection thermal tower (12)
There is heat transfer medium.
5. a kind of tower-type solar thermal power generating system as claimed in claim 4, it is characterised in that: the heat transfer medium is molten
Salt.
6. a kind of tower-type solar thermal power generating system as described in claim 1, it is characterised in that: the hot tank (9) and cold tank
(10) heat-storage medium is equipped in.
7. a kind of tower-type solar thermal power generating system as claimed in claim 6, it is characterised in that: the heat-storage medium is molten
Salt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920039459.0U CN209704778U (en) | 2019-01-10 | 2019-01-10 | A kind of tower-type solar thermal power generating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920039459.0U CN209704778U (en) | 2019-01-10 | 2019-01-10 | A kind of tower-type solar thermal power generating system |
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| CN209704778U true CN209704778U (en) | 2019-11-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102142A (en) * | 2019-12-03 | 2020-05-05 | 西安理工大学 | Tower type solar thermal power generation system based on supercritical fluid |
| CN111911371A (en) * | 2020-06-29 | 2020-11-10 | 东方电气集团东方汽轮机有限公司 | Efficient compact multifunctional disc type light-gathering power generation system |
| CN112128070A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Solar photo-thermal carbon dioxide Brayton cycle system of ORC (organic Rankine cycle) intercooling compressor |
| CN115263477A (en) * | 2022-08-03 | 2022-11-01 | 西安热工研究院有限公司 | Gas-cooled micro-stack energy conversion system and method coupling energy storage and Brayton cycle |
-
2019
- 2019-01-10 CN CN201920039459.0U patent/CN209704778U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102142A (en) * | 2019-12-03 | 2020-05-05 | 西安理工大学 | Tower type solar thermal power generation system based on supercritical fluid |
| CN111911371A (en) * | 2020-06-29 | 2020-11-10 | 东方电气集团东方汽轮机有限公司 | Efficient compact multifunctional disc type light-gathering power generation system |
| CN111911371B (en) * | 2020-06-29 | 2022-09-27 | 东方电气集团东方汽轮机有限公司 | Efficient compact multifunctional disc type light-gathering power generation system |
| CN112128070A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Solar photo-thermal carbon dioxide Brayton cycle system of ORC (organic Rankine cycle) intercooling compressor |
| CN115263477A (en) * | 2022-08-03 | 2022-11-01 | 西安热工研究院有限公司 | Gas-cooled micro-stack energy conversion system and method coupling energy storage and Brayton cycle |
| CN115263477B (en) * | 2022-08-03 | 2024-05-07 | 西安热工研究院有限公司 | Air-cooled micro-stack energy conversion system and method for coupling energy storage and Brayton cycle |
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