CN105673367A - Ultrahigh-temperature trough type solar photo-thermal power generation system - Google Patents
Ultrahigh-temperature trough type solar photo-thermal power generation system Download PDFInfo
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- CN105673367A CN105673367A CN201410650834.7A CN201410650834A CN105673367A CN 105673367 A CN105673367 A CN 105673367A CN 201410650834 A CN201410650834 A CN 201410650834A CN 105673367 A CN105673367 A CN 105673367A
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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
An ultrahigh-temperature trough type solar photo-thermal power generation system comprises a conducting-oil heat collecting system, a steam generating system and a steam power generation system, and the conducting-oil heat collecting system, the steam generating system and the steam power generation system are sequentially connected. According to the improved point of the ultrahigh-temperature trough type solar thermal-electric power generation system, steam generated by the steam generating system is heated by a two-stage superheater system and then enters the steam power generation system. The steam is generated through heat exchange between conducting oil and water, the two-stage superheater system is used for carrying out secondary superheating on the steam, the steam becomes ultrahigh-temperature steam with the highest temperature being 600 DEG C, and by utilizing the ultrahigh-temperature steam for power generation, the working efficiency of a unit can be remarkably improved, and therefore the economical efficiency of the unit is improved.
Description
Technical field
The invention belongs to field of solar thermal power generation, particularly to a kind of superhigh temperature groove type solar solar-thermal generating system.
Background technology
In prior art, as follows about groove type solar collecting system technological overview.
Have two kinds of process programs at present:
The first: collecting system adopts the scheme of conduction oil, groove type solar electricity generation system is to focus on thermal-collecting tube by the reflecting mirror of groove type paraboloid by sunlight, by the heat-conducting oil heating in thermal-collecting tube to about 398 degree Celsius, again through heat exchanger, the heat of conduction oil is transmitted feedwater, water is heated into steam, and about 370 degrees Celsius, steam drive steam turbine rotates, steam turbine drawing generator rotates, thus generating electricity.
For steam turbine, the temperature of steam is more high, pressure is more big, and the thermal efficiency can be more high. But due to conduction oil more than 400 degrees Celsius after, will crack rotten, therefore the conduction oil temperature of heat collecting field output have to be lower than 400 degrees Celsius. And water to become steam be the heat by conduction oil, therefore the temperature of steam is inevitably less than 400 degrees Celsius, is typically designed temperature and takes 370 degrees Celsius. Steam turbine is subcritical state, inefficient.
The second: live (open) steam generating (directsteamgeneration, DSG) solar parabolic through power generation system, whole system does not adopt conduction oil. Water flows directly into collecting system. Water is directly heated into steam by collecting system, and this collecting system comprises warm-up phase, evaporation stage, overheated stage. It significantly has the drawback that in the thermal-collecting tube of evaporation stage, and water flows, while becoming steam, forming vapour-water two phase flow, causing pipe vibration and the technological parameter of extremely difficult control boiler circuit.
Summary of the invention
Present invention solves the technical problem that and be in that: conduction oil self can not be heated to 400 degrees Celsius, utilize conduction oil and water carry out changing thermogenetic steam temperature can not more than 400 degrees Celsius, thus causing steam-electric power inefficiency.
The present invention solves that the technical scheme that problem above adopts is: superhigh temperature groove type solar solar-thermal generating system, including the conduction oil collecting system, steam generating system and the steam generating system that are sequentially connected, it is characterized in that, described steam generating system water vapour out enters described steam generating system after being heated by two-stage superheater system.
Described two-stage superheater system is made up of several trough type solar heat-collectors.
Several trough type solar heat-collectors described are arranged in series.
Including heat reservoir, described heat reservoir connects with conduction oil collecting system.
Described in what the present invention reached have the beneficial effect that.
1, the present invention adopts conduction oil and water to carry out heat exchange and produces water vapour, and utilizing two-stage superheater system that this water vapour is carried out, secondary is overheated becomes the maximum temperature super temperature steam up to 600 degrees Celsius, utilize this superhigh temperature steam-electric power can significantly submit the work efficiency of unit to, then improve the economy of unit.
2, present invention also avoids the problem that vapour-water two phase flow occurs in thermal-collecting tube. Be responsible for producing steam by independent steam generating system, the two-stage superheater system arranged specially it is overheated to secondary steam to be responsible for, thus avoiding vapour-water two phase flow to cause pipe vibration and the problem of the technological parameter of extremely difficult control boiler circuit.
3, this two-stage superheater system adopts groove type solar structure, economical and efficient equally, reduces cost.
4, this two-stage superheater system can arrange multiple connected mode, such that it is able to control the temperature of superhigh temperature steam largely, for instance, it is possible to increase quantity this steam of collection solar energy heating as much as possible of groove type parabolic mirror.
5, heat reservoir can be added in this conduction oil collecting system according to real needs in practice, when conduction oil collecting system collection solar energy is inefficient, the energy sources for heating conduction oil temperature in heat reservoir can be employed for steam-electric power.
Accompanying drawing explanation
The structural representation of Fig. 1 superhigh temperature groove type solar solar-thermal generating system of the present invention.
Figure number illustrates:
1 groove type parabolic mirror
2 thermal-collecting tubes
3 preheaters
4 vaporizers
5 primary superheaters
6 two-stage superheaters
7 steam turbines
8 electromotors
9 condensers
10 feed pumps
11 heat conduction oil circulating pumps
12 heat reservoirs
13 jet chimneys
14 feedwater pipings.
Detailed description of the invention
The conduction oil collecting system of the present invention includes groove type parabolic mirror 1 and thermal-collecting tube 2 and is used as support and follows the tracks of the device (diagram does not show) of track of sun; Steam generating system includes primary superheater 5, vaporizer 4, preheater 3; Steam generating system includes steam turbine 7, electromotor 8, condenser 9.
Multiple groove type parabolic mirror arranged in parallel in conduction oil collecting system, the focus point of each minute surface there is thermal-collecting tube, multiple thermal-collecting tubes converge on a main pipeline, and the conduction oil realized in thermal-collecting tube by the effect of heat conduction oil circulating pump 11 moves in circles collection solar energy for carrying out heat exchange with water.
Conduction oil in thermal-collecting tube is by after solar energy heating to 398 degree Celsius, sequentially pass through primary superheater 5, vaporizer 4 and preheater 3 and water heat exchange, then the conduction oil temperature in this thermal-collecting tube falls to approximately 298 degrees Celsius, the conduction oil of this low temperature continues to enter under the drive of heat conduction oil circulating pump 11 in conduction oil collecting system again to heat, and moves in circles.
Under the effect of feed pump 10, water sequentially enters preheater 3 along feedwater piping 14, vaporizer 4, primary superheater 5 are heated the vaporization that heats up, the flow direction of conduction oil and water flow to contrast, it is ensured that the abundant vaporization of water.
It is approximately 370 degrees Celsius from primary superheater 5 steam out, this steam enters two-stage superheater 6 along jet chimney 13 and again heats up, in this two-stage superheater, flowing is steam, the problem being absent from vapour-water two phase flow, pipe vibration will not be there is, this two-stage superheater 6 adopts groove type parabolic mirror equally, multiple groove type parabolic mirror configured in series, the pipeline transporting this steam is arranged on the focal line of this groove type parabolic mirror all, utilize sunlight heat temperature raising again, 600 degrees Celsius can be reached from this two-stage superheater steam maximum temperature out, this superhigh temperature steam enters acting drive electrical generators 8 in steam turbine 7 and generates electricity, the steam lowered the temperature afterwards enters entrance cooling in condenser 9 and is condensed into aqueous water, this aqueous water enters heat exchange again along feedwater piping 14 with the conduction oil in thermal-collecting tube 2 under the effect of feed pump 10, the heat exchange that moves in circles generates electricity.
This heat reservoir 12 can decide whether according to actual needs, this heat reservoir 12 can be fused salt heat accumulation or other modes, when conduction oil collecting system collection solar energy is inefficient, the energy sources for heating conduction oil temperature in heat reservoir 12 can be employed for steam-electric power, this heat reservoir 12 connects with the conduction oil main pipeline at these conduction oil collecting system two ends, convenient detachable, can arrange flexibly as required.
Claims (4)
1. superhigh temperature groove type solar solar-thermal generating system, including the conduction oil collecting system, steam generating system and the steam generating system that are sequentially connected, it is characterized in that, described steam generating system water vapour out enters described steam generating system after being heated by two-stage superheater system.
2. superhigh temperature groove type solar solar-thermal generating system as claimed in claim 1, it is characterised in that described two-stage superheater system is made up of several trough type solar heat-collectors.
3. superhigh temperature groove type solar solar-thermal generating system as claimed in claim 2, it is characterised in that several trough type solar heat-collectors described are arranged in series.
4. superhigh temperature groove type solar solar-thermal generating system as claimed in claim 3, it is characterised in that including heat reservoir, described heat reservoir connects with conduction oil collecting system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410650834.7A CN105673367A (en) | 2014-11-17 | 2014-11-17 | Ultrahigh-temperature trough type solar photo-thermal power generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410650834.7A CN105673367A (en) | 2014-11-17 | 2014-11-17 | Ultrahigh-temperature trough type solar photo-thermal power generation system |
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| CN105673367A true CN105673367A (en) | 2016-06-15 |
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| CN201410650834.7A Pending CN105673367A (en) | 2014-11-17 | 2014-11-17 | Ultrahigh-temperature trough type solar photo-thermal power generation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321382A (en) * | 2016-09-07 | 2017-01-11 | 华中科技大学 | Solar photothermal combined power generation system |
| CN109737620A (en) * | 2018-12-18 | 2019-05-10 | 南京天创电子技术有限公司 | A kind of system and method for solar energy heating heating network steam and condensed water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4164849A (en) * | 1976-09-30 | 1979-08-21 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for thermal power generation |
| JPS58134178A (en) * | 1982-02-03 | 1983-08-10 | クルツプ−コツパ−ス・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Process for heating low temperature wet coal |
| CN103277272A (en) * | 2013-05-08 | 2013-09-04 | 哈尔滨工业大学 | Wind energy and groove-type solar all-in-one power generating system |
| CN103835899A (en) * | 2012-11-22 | 2014-06-04 | 飞秒光电科技(西安)有限公司 | Groove type solar thermal gathering power generation device |
| CN204200498U (en) * | 2014-11-17 | 2015-03-11 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Superhigh temperature groove type solar solar-thermal generating system |
-
2014
- 2014-11-17 CN CN201410650834.7A patent/CN105673367A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4164849A (en) * | 1976-09-30 | 1979-08-21 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for thermal power generation |
| JPS58134178A (en) * | 1982-02-03 | 1983-08-10 | クルツプ−コツパ−ス・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Process for heating low temperature wet coal |
| CN103835899A (en) * | 2012-11-22 | 2014-06-04 | 飞秒光电科技(西安)有限公司 | Groove type solar thermal gathering power generation device |
| CN103277272A (en) * | 2013-05-08 | 2013-09-04 | 哈尔滨工业大学 | Wind energy and groove-type solar all-in-one power generating system |
| CN204200498U (en) * | 2014-11-17 | 2015-03-11 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Superhigh temperature groove type solar solar-thermal generating system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321382A (en) * | 2016-09-07 | 2017-01-11 | 华中科技大学 | Solar photothermal combined power generation system |
| CN109737620A (en) * | 2018-12-18 | 2019-05-10 | 南京天创电子技术有限公司 | A kind of system and method for solar energy heating heating network steam and condensed water |
| CN109737620B (en) * | 2018-12-18 | 2024-02-09 | 南京天创电子技术有限公司 | System and method for heating heat supply pipe network steam and condensed water by solar energy |
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Application publication date: 20160615 |