CN205533030U - Overcritical bretton and organic rankine combined cycle solar electric system - Google Patents
Overcritical bretton and organic rankine combined cycle solar electric system Download PDFInfo
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- CN205533030U CN205533030U CN201620055637.5U CN201620055637U CN205533030U CN 205533030 U CN205533030 U CN 205533030U CN 201620055637 U CN201620055637 U CN 201620055637U CN 205533030 U CN205533030 U CN 205533030U
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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
Abstract
The utility model discloses an overcritical bretton and organic rankine combined cycle solar electric system, including solar collector, well low temperature heat -retaining system, overcritical brayton cycle system and well low temperature organic rankine cycle system, overcritical brayton cycle system includes brayton cycle multistage turbine power generation system, brayton cycle regenerator, precooler and compressor, well low temperature organic rankine cycle system includes organic rankine cycle heater, organic rankine cycle turbine, organic rankine cycle regenerator, condenser and organic working medium pump. The utility model discloses a solar energy collection temperature and the thermal efficiency are higher to can effectually solve the uneven problem of solar energy temporal distribution, the temperature of heat accumulation simultaneously is lower.
Description
Technical field
This utility model relates to a kind of solar power system, is specifically related to a kind of supercritical Bretton
With organic Rankine combined cycle solar power system.
Background technology
Solar energy is a kind of inexhaustible clean energy resource, due to solar light-heat power-generation
When high-temperature heat-gathering, theoretical thermal efficiency is high, and can use relatively inexpensive thermal storage and energy accumulation in theory
Solve the problem that solar energy Annual distribution is uneven so that photo-thermal power generation comes into one's own all the more.
Photo-thermal power generation needs to convert light energy into heat energy, then realizes thermo-electric conversion by thermodynamic cycle,
At present in the middle of numerous thermodynamic cycles, supercritical Brayton cycle is a kind of circulation shape having superiority most
Formula.It is big that Novel supercritical working medium (carbon dioxide, helium and nitrous oxide etc.) has energy density,
The innate advantages such as heat transfer efficiency is high, and system is simple, can be greatly improved heat to power output efficiency, reduce
Equipment volume, has the highest economy.
The utilization of solar energy also needs to solve the problem that Annual distribution is uneven, and conventional method is accumulation of heat.
But thermodynamic cycle is wished to improve the thermal efficiency by raising maximum cycle temperature, and along with maximum temperature
Raising regenerator temperature also improve constantly, this give heat-storing material, hold over system container, Insulation
Deng all bringing bigger difficulty.If can reduce while keeping thermodynamic cycle higher temperature
Regenerator temperature then can reduce system design and the difficulty run.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, it is provided that a kind of surpassing faces
Boundary's Bretton and organic Rankine combined cycle solar power system, the solar energy heating temperature of this system
Degree and the thermal efficiency are higher, and can effectively solve the problem that solar energy Annual distribution is uneven, with
Time regenerator temperature relatively low.
For reaching above-mentioned purpose, supercritical Bretton described in the utility model is combined with organic Rankine
Circulating solar energy electricity generation system includes solar thermal collector, middle low temperature heat reservoir, supercritical mine-laying
Pause blood circulation and middle low temperature organic rankine cycle system；
Described supercritical Brayton Cycle system includes Brayton cycle multistage turbine electricity generation system, cloth
Thunder pauses circulation heat recovery device, precooler and compressor, the supercritical sender property outlet of compressor and Bretton
The entrance of circulation heat recovery device heat absorbing side is connected, the outlet of Brayton cycle regenerator heat absorbing side with too
The working medium entrance of sun energy heat collector is connected, and the sender property outlet of solar thermal collector is through Brayton cycle
Multistage turbine electricity generation system is connected with the entrance of Brayton cycle regenerator cold side, and Bretton follows
The outlet of ring regenerator cold side is connected with the supercritical working medium entrance of precooler, surpassing of precooler
Critical sender property outlet is connected with the supercritical working medium entrance of compressor；
Described middle low temperature organic rankine cycle system includes organic Rankine bottoming cycle heater, organic Rankine
Circulation turbine, organic Rankine bottoming cycle regenerator, condenser and organic working medium pump, organic Rankine bottoming cycle
Heater conduction oil outlet and conduction oil entrance by middle low temperature heat reservoir respectively with precooler
Conduction oil entrance and conduction oil outlet are connected, the organic working medium outlet of organic Rankine bottoming cycle heater
It is connected through the entrance of organic Rankine bottoming cycle turbine with organic Rankine bottoming cycle regenerator cold side, organic
The condensed device of outlet of Rankine cycle regenerator cold side and organic working medium pump return with organic Rankine bottoming cycle
The entrance of hot device heat absorbing side is connected, and the outlet of organic Rankine bottoming cycle regenerator heat absorbing side is bright with organic
It agree the organic working medium entrance connection of recirculation heater.
Described middle low temperature heat reservoir include middle low-temperature heat accumulating device, the first three-way valve, the second three-way valve,
3rd three-way valve, the 4th three-way valve and Heat-transfer Oil Pump；
The conduction oil outlet of described precooler and first opening in communication of the first three-way valve, first
Second opening of three-way valve and the 3rd opening respectively with an opening of middle low-temperature heat accumulating device and having
The conduction oil entrance of machine Rankine cycle heater is connected, the conduction oil of organic Rankine bottoming cycle heater
Outlet and first opening in communication of the 4th three-way valve, second opening of the 4th three-way valve and the
Three openings are connected with first opening of the 3rd three-way valve and the entrance of Heat-transfer Oil Pump respectively, the
Second opening of three three-way valve and the 3rd opening respectively with another opening of middle low-temperature heat accumulating device
And second first opening in communication of three-way valve, second opening of the second three-way valve and the 3rd
Opening connects with the conduction oil entrance of conduction oil delivery side of pump and described precooler respectively.
This utility model has the advantages that
Supercritical Bretton described in the utility model and organic Rankine combined cycle solar electrical energy generation system
In use, the solar energy high temperature heat first obtained by solar thermal collector is by supercritical cloth for system
Thunder pauses and recycles, thus effectively ensures system safe operation under higher heat-collecting temperature, simultaneously
Supercritical working medium is stable and there is not the problems such as decomposition, it is ensured that system entirety has the higher thermal efficiency,
It addition, the used heat that supercritical Brayton cycle is discharged is by conduction oil centering low temperature heat reservoir
Heat-storing material heats, and middle low temperature heat reservoir can be organic with middle low temperature bright needs when
Willing blood circulation carries out heat exchange, thus solves solar energy problem the most pockety.Separately
Outward, the maximum temperature of the heat-storing material of middle low-temperature heat accumulating system storage follows much smaller than supercritical Bretton
The maximum temperature of supercritical working medium in loop systems, greatly reduces the difficulty that high-temperature heat accumulation brings.
When actually used, middle low temperature organic rankine cycle system can only run at night, it is to avoid environment
The problem that temperature height is unable to maintain that relatively low condensation temperature, it is ensured that the thermal efficiency of organic Rankine bottoming cycle；And
Time by day, relying primarily on supercritical Brayton Cycle system and generate electricity, supercritical Bretton follows
Pre-cooling in loop systems is by completing to conduction oil heat extraction, it is to avoid by the shadow of ambient temperature
Ring.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1 it is solar thermal collector, 2 is Brayton cycle multistage turbine electricity generation system, 3 is
Brayton cycle regenerator, 4 be precooler, 5 be compressor, 6 be the first three-way valve, 7 be
Low-temperature heat accumulating device, 8 be the second three-way valve, 9 be the 3rd three-way valve, 10 be Heat-transfer Oil Pump, 11 be
4th three-way valve, 12 be organic Rankine bottoming cycle heater, 13 for organic Rankine bottoming cycle turbine, 14
For organic Rankine bottoming cycle regenerator, 15 be condenser, 16 for organic working medium pump.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
With reference to Fig. 1, supercritical Bretton described in the utility model is with organic Rankine combined cycle too
Sun electricity generation system can include that solar thermal collector 1, middle low temperature heat reservoir, supercritical Bretton follow
Loop systems and middle low temperature organic rankine cycle system；Described supercritical Brayton Cycle system includes cloth
Thunder pauses cycle multistage turbine power generation system 2, Brayton cycle regenerator 3, precooler 4 and compressor
5, the supercritical sender property outlet of compressor 5 is connected with the entrance of Brayton cycle regenerator 3 heat absorbing side
Logical, the working medium entrance phase of the outlet of Brayton cycle regenerator 3 heat absorbing side and solar thermal collector 1
Connection, the sender property outlet of solar thermal collector 1 through Brayton cycle multistage turbine electricity generation system 2 with
The entrance of Brayton cycle regenerator 3 cold side is connected, Brayton cycle regenerator 3 cold side
Outlet be connected with the supercritical working medium entrance of precooler 4, the supercritical working medium of precooler 4 goes out
Mouth is connected with the supercritical working medium entrance of compressor 5；Described middle low temperature organic rankine cycle system
Including organic Rankine bottoming cycle heater 12, organic Rankine bottoming cycle turbine 13, organic Rankine bottoming cycle backheat
Device 14 condenser 15 and organic working medium pump 16, the conduction oil of organic Rankine bottoming cycle heater 12 goes out
Mouthful and conduction oil entrance by middle low temperature heat reservoir respectively with the conduction oil entrance of precooler 4 and leading
Hot oil outlet is connected, and the organic working medium outlet of organic Rankine bottoming cycle heater 12 follows through organic Rankine
Ring turbine 13 is connected with the entrance of organic Rankine bottoming cycle regenerator 14 cold side, and organic Rankine follows
The condensed device of outlet 15 of ring regenerator 14 cold side and organic working medium pump 16 and organic Rankine bottoming cycle
The entrance of regenerator 14 heat absorbing side is connected, the outlet of organic Rankine bottoming cycle regenerator 14 heat absorbing side
Connect with the organic working medium entrance of organic Rankine bottoming cycle heater 12.
It should be noted that described middle low temperature heat reservoir includes middle low-temperature heat accumulating device the 7, the 1st
Logical valve the 6, second three-way valve the 8, the 3rd three-way valve the 9, the 4th three-way valve 11 and Heat-transfer Oil Pump 10；
The conduction oil outlet of precooler 4 and first opening in communication of the first three-way valve 6, the first threeway
Second opening of valve 6 and the 3rd opening respectively with an opening of middle low-temperature heat accumulating device 7 and having
The conduction oil entrance of machine Rankine cycle heater 12 is connected, organic Rankine bottoming cycle heater 12
Conduction oil outlet and first opening in communication of the 4th three-way valve 11, the of the 4th three-way valve 11
Two openings and the 3rd opening respectively with first opening and the Heat-transfer Oil Pump 10 of the 3rd three-way valve 9
Entrance be connected, second opening of the 3rd three-way valve 9 and the 3rd opening respectively with middle low temperature
Another opening of thermophore 7 and first opening in communication of the second three-way valve 8, the second threeway
Second opening of valve 8 and the 3rd opening respectively with the outlet of Heat-transfer Oil Pump 10 and described precooler
The conduction oil entrance of 4 is connected.
Specific works process of the present utility model is:
The luminous energy of solar radiation is converted to high temperature heat by solar thermal collector 1, and supercritical working medium exists
Solar thermal collector 1 is heated to be High Temperature High Pressure supercritical working medium, High Temperature High Pressure supercritical working medium
Being done work by Brayton cycle multistage turbine electricity generation system 2, the supercritical working medium after acting enters cloth
Thunder pauses the side heat release of circulation heat recovery device 3, subsequently into low in being passed to by used heat in precooler 4
Conduction oil in intermediate temperature regenerator system, the supercritical working medium after pre-cooling enters compressor 5 and pressurizes,
High-pressure supercritical working medium enters the opposite side heat absorption of Brayton cycle regenerator 3, is finally again introduced into
Solar thermal collector 1, completes whole Brayton cycle.
Stored by middle low-temperature heat accumulating system while supercritical Brayton Cycle system runs
Heat, then when organic rankine cycle system runs in low-temperature heat accumulating system carry out heat release.Wherein,
During accumulation of heat, middle low-temperature heat accumulating system and precooler 4 keep UNICOM, and conduction oil is in Heat-transfer Oil Pump 10
Conveying under pass sequentially through the second three-way valve 8, precooler the 4, first three-way valve 6, middle low-temperature heat accumulating
Device the 7, the 3rd three-way valve 9 and the 4th three-way valve 11, make heat pass to middle low temperature by conduction oil
Heat-storing material in thermophore 7 stores.During heat release, middle low-temperature heat accumulating system is made to follow with organic Rankine
Ring heater 12 keeps UNICOM, and conduction oil, under the conveying of Heat-transfer Oil Pump 10, passes sequentially through second
Three-way valve the 8, the 3rd three-way valve 9, middle low-temperature heat accumulating device the 7, first three-way valve 6, organic Rankine follow
Ring heater 12 and the 4th three-way valve 11；Heat is first by the heat-storing material in middle low-temperature heat accumulating device 7
Pass to conduction oil, then by heat-conducting oil heating organic working medium.
Organic working medium after Bei Jiare enters organic Rankine bottoming cycle turbine 13 and does work, organic after acting
Working medium enters the side heat release of organic Rankine bottoming cycle regenerator 14, then enters back in condenser 15
Being cooled to liquid, liquid organic working medium sends into organic Rankine bottoming cycle after being pressurizeed by organic working medium pump 16
The opposite side heat absorption of regenerator 14, then enters back in organic Rankine bottoming cycle heater 12 and absorbs heat,
Complete whole organic Rankine bottoming cycle.
Above-described detailed description of the invention, to the purpose of this utility model, technical scheme and useful
Effect is further described, and be it should be understood that and the foregoing is only this utility model
Detailed description of the invention, be not limited to this utility model, all in essence of the present utility model
Within god and principle, any modification, equivalent substitution and improvement etc. done, should be included in this reality
Within novel protection domain.
Claims (2)
1. supercritical Bretton and an organic Rankine combined cycle solar power system, its feature
It is, including solar thermal collector (1), middle low temperature heat reservoir, supercritical Brayton Cycle system
And middle low temperature organic rankine cycle system；
Described supercritical Brayton Cycle system include Brayton cycle multistage turbine electricity generation system (2),
Brayton cycle regenerator (3), precooler (4) and compressor (5), super the facing of compressor (5)
Boundary's sender property outlet is connected with the entrance of Brayton cycle regenerator (3) heat absorbing side, Brayton cycle
The outlet of regenerator (3) heat absorbing side is connected with the working medium entrance of solar thermal collector (1), the sun
The sender property outlet of energy heat collector (1) is through Brayton cycle multistage turbine electricity generation system (2) and Bretton
The entrance of circulation heat recovery device (3) cold side is connected, Brayton cycle regenerator (3) cold side
Outlet is connected with the supercritical working medium entrance of precooler (4), the supercritical working medium of precooler (4)
Outlet is connected with the supercritical working medium entrance of compressor (5)；
Described middle low temperature organic rankine cycle system includes organic Rankine bottoming cycle heater (12), organic
Rankine cycle turbine (13), organic Rankine bottoming cycle regenerator (14), condenser (15) and organic work
Matter pump (16), the conduction oil outlet of organic Rankine bottoming cycle heater (12) and conduction oil entrance pass through
Middle low temperature heat reservoir is connected with conduction oil entrance and the conduction oil outlet of precooler (4) respectively,
Organic Rankine bottoming cycle heater (12) organic working medium outlet through organic Rankine bottoming cycle turbine (13) with
The entrance of organic Rankine bottoming cycle regenerator (14) cold side is connected, organic Rankine bottoming cycle regenerator (14)
The condensed device of the outlet (15) of cold side and organic working medium pump (16) and organic Rankine bottoming cycle regenerator
(14) entrance of heat absorbing side is connected, the outlet of organic Rankine bottoming cycle regenerator (14) heat absorbing side with
The organic working medium entrance connection of organic Rankine bottoming cycle heater (12).
Supercritical Bretton the most according to claim 1 and organic Rankine combined cycle solar energy
Electricity generation system, it is characterised in that described middle low temperature heat reservoir include middle low-temperature heat accumulating device (7),
One three-way valve (6), the second three-way valve (8), the 3rd three-way valve (9), the 4th three-way valve (11) and
Heat-transfer Oil Pump (10)；
The conduction oil outlet of described precooler (4) is connected with first opening of the first three-way valve (6)
Logical, second opening of the first three-way valve (6) and the 3rd opening respectively with middle low-temperature heat accumulating device (7)
An opening and the conduction oil entrance of organic Rankine bottoming cycle heater (12) be connected, organic Rankine
The conduction oil outlet of recirculation heater (12) and first opening in communication of the 4th three-way valve (11),
Second opening of the 4th three-way valve (11) and the 3rd opening respectively with the 3rd three-way valve (9)
The entrance of first opening and Heat-transfer Oil Pump (10) is connected, second of the 3rd three-way valve (9)
Opening and the 3rd opening respectively with another opening and second three-way valve of middle low-temperature heat accumulating device (7)
(8) first opening in communication, second opening of the second three-way valve (8) and the 3rd opening
Connect with the outlet of Heat-transfer Oil Pump (10) and the conduction oil entrance of described precooler (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620055637.5U CN205533030U (en) | 2016-01-20 | 2016-01-20 | Overcritical bretton and organic rankine combined cycle solar electric system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620055637.5U CN205533030U (en) | 2016-01-20 | 2016-01-20 | Overcritical bretton and organic rankine combined cycle solar electric system |
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| CN205533030U true CN205533030U (en) | 2016-08-31 |
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| CN201620055637.5U Active CN205533030U (en) | 2016-01-20 | 2016-01-20 | Overcritical bretton and organic rankine combined cycle solar electric system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545619A (en) * | 2016-01-20 | 2016-05-04 | 西安热工研究院有限公司 | Supercritical Bretton and organic Rankine combined cycle solar power generation system |
| CN107387179A (en) * | 2017-07-19 | 2017-11-24 | 东南大学 | One kind is coupled with CO2The supercritical CO of energy-storage units2Brayton cycle electricity generation system |
-
2016
- 2016-01-20 CN CN201620055637.5U patent/CN205533030U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545619A (en) * | 2016-01-20 | 2016-05-04 | 西安热工研究院有限公司 | Supercritical Bretton and organic Rankine combined cycle solar power generation system |
| CN105545619B (en) * | 2016-01-20 | 2018-08-07 | 西安热工研究院有限公司 | A kind of overcritical Bretton and organic Rankine combined cycle solar power system |
| CN107387179A (en) * | 2017-07-19 | 2017-11-24 | 东南大学 | One kind is coupled with CO2The supercritical CO of energy-storage units2Brayton cycle electricity generation system |
| CN107387179B (en) * | 2017-07-19 | 2019-04-30 | 东南大学 | One kind being coupled with CO2The supercritical CO of energy-storage units2Brayton cycle electricity generation system |
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