CN103603781A - Water pumping energy storage power generation device and method based on condensation solar thermal power - Google Patents
Water pumping energy storage power generation device and method based on condensation solar thermal power Download PDFInfo
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- CN103603781A CN103603781A CN201310518600.2A CN201310518600A CN103603781A CN 103603781 A CN103603781 A CN 103603781A CN 201310518600 A CN201310518600 A CN 201310518600A CN 103603781 A CN103603781 A CN 103603781A
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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
- Y02E10/44—Heat exchange systems
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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 invention belongs to the power generation field and relates to a water pumping energy storage technology, in particular to a water pumping energy storage power generation system based on condensation solar thermal power. A water pumping energy storage power generation device is mainly characterized in that a solar light condensation heat collection field collects heat and transfers the heat to a steam generation system through a heat conduction medium, steam generated by the steam generation system drives a steam power machine which drives a water pump, the water pump pumps water in a second water storage tank at the lower position to a first water storage tank at the higher position, water in the first water storage tank impacts a downstream water turbine generator set, and the water turbine generator set generates power. The device has the advantage that a method different from a traditional storage technology is provided for storage of solar energy, investment is small, the system device is simple, large-capacity storage of the solar energy becomes possible, and continuous application of the solar energy becomes possible.
Description
Technical field
The invention belongs to power field, relate to draw water energy energy storage technology, the particularly energy-storing and power-generating system that draws water based on optically focused solar thermal energy.
Background technique
Solar energy has advantages of following: (1) is general: solar light cultivated illumination the earth, and the restriction that there is no a region is land or ocean no matter, and no matter high mountain or island all have everywhere, directly development and utilization, and need not exploit and transport.(2) harmless: develop solar energy and do not pollute the environment, it is one of clean energy resource, in environmental pollution more and more serious today, this point is extremely valuable.(3) huge: arrive every year the lip-deep solar radiant energy of the earth and be approximately equivalent to 130,000,000,000,000 tons of coals, its total amount belongs to the maximum energy that can develop in the world now.(4) permanent: the nuclear energy rate estimation producing according to the current sun, the reserves of hydrogen enough maintain over ten billion year, and the life-span of the earth is also about tens years, in this sense, the energy that can say the sun is nexhaustible.But as clean renewable energy sources, also there is following shortcoming in solar energy: (1) dispersiveness in actual applications: although the total amount of the solar radiation of arrival earth surface is very large, energy flux density is very low.Therefore, when utilizing solar energy, want to obtain certain transfer power, often the sizable a set of collection of space required and conversion equipment.(2) unstability: owing to being subject to round the clock, the impact of the enchancement factor such as the restriction of the natural condition such as season, latitude and altitude and fine, cloudy, cloud, rain, so, the solar irradiance that arrives a certain ground is interruption, be again extremely unsettled, this has increased difficulty to the large-scale application of solar energy.In order to make solar energy become continuous, the stable energy, thereby finally become the alternative energy source that can compete mutually with conventional energy resource, just must solve well accumulation of energy problem, the solar radiant energy on sunny daytime is stored up as far as possible, for night or overcast and rainy use, but accumulation of energy is at present also one of link comparatively weak in solar energy utilization.
Unstable and the intermittent shortcoming for solar energy, one of effective way of solution is exactly the mode by energy storage.By heat-storage technology, having realized the uninterruptable power generation in 24 hours of solar energy cogeneration power plant at present moves.
In short-term heat-storing device, phase-change thermal storage is a kind of very effective and potential method of tool.The patent 201220098353.6(applying date: 2012.3.16) disclose a kind of high-temperature heat-storage heat-exchanger rig for solar energy thermal-power-generating.The patent 201010128656.3(applying date: 2010.3.18) disclose a kind of bushing-type high temperature heat-storing device being applied in solar thermal utilization, this device has simple in structure, safe and reliable and heat exchange efficiency high.
But existing patented technology is all that solar energy be take to the form storage of heat-storage medium (conventional is fuse salt) heat energy, and the mixture that conventional heat-storage medium is nitrate, as Hitec salt (KNO
3(53%)-NaNO
3(7%)-NaNO
2) or NaNO (40%)
3(60%)-KNO
3(40%).Because the thermal capacitance of fuse salt is relatively little, therefore will store certain heat energy needs a considerable amount of fused salts.As 50MW solar energy thermal-power-generating station, 7.5h heat accumulation, 21043 tons of required Hitec salt.According to the price of current industrial nitric acid salt, heat accumulation is invested the proportion that accounts for nearly 20% in whole project investment.Because of fused salt fusing point higher (140 ℃ of >), to pipeline, need to accompany heat treatment in addition, make system complex, increase system operation cost.
Summary of the invention
The present invention is directed to prior art deficiency, invented a kind of draw water energy-storage generating apparatus and method thereof based on optically focused solar thermal energy.Solved the heat accumulation problem of solar energy.
For achieving the above object, the technological scheme that the present invention takes is: a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, its main feature is to include: solar energy light gathering and heat collecting field thermal-arrest, heat is delivered to steam generating system by heat-conducting medium, the steam driven steam power machine that steam generating system produces, steam power machine drives water pump, and water pump is drawn into the first high-order wet pit by the water of the second wet pit of low level; The water of the first high-order wet pit impacts to the hydraulic generator unit that is located at downstream, the generating of hydraulic generator unit.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, the condenser in described solar energy light gathering and heat collecting field is one or more combinations in slot-type optical collector or linear Fresnel formula solar concentrator or tower condenser.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described steam generating system is oil-water-to-water heat exchanger or salt-water-to-water heat exchanger.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described steam power machine is a kind of in steam turbine or screw power machine.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described low level wet pit is artificial lake or river.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described hydraulic generator unit comprises water turbine and hydraulic turbine generator.
The energy storing and electricity generating method of drawing water based on optically focused solar thermal energy, its main feature is that step is:
Solar energy is collected through solar energy light gathering and heat collecting field, is converted to and is met steam power machine desired parameters, vapor pressure: 1.28MPa-10MPa by steam generating system; 260 ℃ of-535 ℃ of steam of vapor (steam) temperature, steam driven steam power machine, steam power machine drags water pump, and it is highly 30-80m that water pump is raised to the water extraction in suction basin, and another suction basin is thus lifted to the water-driven hydraulic generator unit generating in suction basin.
The invention has the beneficial effects as follows: the storage that the present invention is solar energy provides a kind of method that is different from conventional storage technologies, invest littlely, system equipment is simple.Make the large capacity storage of solar energy become possibility, make the lasting application of solar energy become possibility.
Accompanying drawing explanation
Fig. 1: principle of measurement schematic diagram of the present invention;
In figure: 1 solar energy light gathering and heat collecting field; 2 steam generating systems; 3 steam power machines; 4 water pumps; 5 suction basins; 6 hydraulic generator units.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1: see Fig. 1, a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, include: solar energy light gathering and heat collecting field 1 thermal-arrest, heat is delivered to steam generating system 2 by heat-conducting medium, the steam driven steam power machine 3 that steam generating system 2 produces, steam power machine 3 drives water pump 4, and water pump 4 is drawn into the first high-order wet pit 5-1 by the water of the second wet pit 5-2 of low level; The water of the first high-order wet pit 5-1 impacts to the hydraulic generator unit 6 that is located at downstream, 6 generatings of hydraulic generator unit.
Condenser in described solar energy light gathering and heat collecting field 1 is slot-type optical collector.
Described steam generating system 2 is oil-water-to-water heat exchanger.
Described steam power machine 3 is a kind of in steam turbine.
Described low level wet pit 5-2 is artificial lake.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described hydraulic generator unit 6 comprises water turbine and hydraulic turbine generator.
Embodiment 2: see Fig. 1, and a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, main structure is identical with embodiment 1.Condenser in described solar energy light gathering and heat collecting field 1 is linear Fresnel formula solar concentrator.
Described steam generating system 2 is salt-water-to-water heat exchanger.
Described steam power machine 3 is a kind of in screw power machine.
Described low level wet pit 5-2 is river.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described hydraulic generator unit 6 comprises water turbine and hydraulic turbine generator.
Embodiment 3: see Fig. 1, and a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, main structure is identical with embodiment 1.A kind of in tower condenser in described solar energy light gathering and heat collecting field 1.
Described steam generating system 2 is used for oil-water-to-water heat exchanger and salt-water-to-water heat exchanger simultaneously.
Described steam power machine 3 is a kind of in steam turbine.
Described low level wet pit 5-2 is artificial lake.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described hydraulic generator unit 6 comprises water turbine and hydraulic turbine generator.
Embodiment 4: see Fig. 1, and a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, main structure is identical with embodiment 1.Condenser in described solar energy light gathering and heat collecting field 1 is the combination of slot-type optical collector, linear Fresnel formula solar concentrator and tower condenser.
Described steam generating system 2 is oil-water-to-water heat exchanger and salt-water-to-water heat exchanger.
Described steam power machine 3 is a kind of in steam turbine and screw power machine.
Described low level wet pit 5-2 is river.
Described a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, described hydraulic generator unit 6 comprises water turbine and hydraulic turbine generator.
Embodiment 5: a kind of energy storing and electricity generating method of drawing water based on optically focused solar thermal energy, and its main feature is that step is:
Solar energy is collected through solar energy light gathering and heat collecting field 1, converts that to meet steam power machine 3 desired parameters be vapor pressure: 1.28MPa-10MPa by steam generating system 2 to; 260 ℃ of-535 ℃ of steam of vapor (steam) temperature, steam driven steam power machine 3, steam power machine drags water pump 4, and it is highly 30-80m that water pump is raised to the water extraction in suction basin 5, and another suction basin is thus lifted to water-driven hydraulic generator unit 6 generatings in suction basin.
Embodiment 6: a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy, and the condenser in described solar energy light gathering and heat collecting field 1 is linear Fresnel formula solar concentrator, concentrating collector north and south is arranged, the East and West direction tracking sun, heat collecting field area 20000m
2, the heat transfer medium in heat collecting field is conduction oil.
Described steam generating system 2 is oil-water-to-water heat exchanger, comprises preheater, steam generator and superheater.
Described steam power machine 3 is pure condensate formula steam turbine, and rated power is 1MW.
Described pure condensate formula steam turbine 3 and the gearbox that passes through of water pump 4 are directly connected.
Described water pump is Centrifugal water pump, and power is 500kW, and flow is 80T/h, and lift is 60m.
Described suction basin 5 comprises two, a high-level reservoir, a low level wet pit.
Perpendicular distance between described high-level reservoir and low level wet pit is 50m, and high-level reservoir and low level wet pit volume are equal, and size is 100m
3.
Described hydraulic generator unit 6 comprises water turbine and hydraulic turbine generator.
Described water turbine is Francis turbine, and electric motor power is 800kW.
Embodiment 7: see Fig. 1, and a kind of energy-storing and power-generating system that draws water based on optically focused solar thermal energy, the condenser in described solar energy light gathering and heat collecting field 1 is slot type formula solar concentrator, concentrating collector north and south is arranged, the East and West direction tracking sun, heat collecting field area 120000m
2, the heat transfer medium in heat collecting field is conduction oil.
Described steam generating system 2 is oil-water-to-water heat exchanger, comprises preheater, steam generator and superheater.
Described steam power machine 3 is pure condensate formula steam turbine, and rated power is 6MW.
Described pure condensate formula steam turbine 3 and the gearbox that passes through of water pump 4 are directly connected.
Described water pump is Centrifugal water pump, and power is 500kW, and flow is 80T/h, and lift is 60m.
Perpendicular distance between described high-level reservoir and low level wet pit is 50m, and high-level reservoir and low level wet pit volume are equal, and size is 100m
3.
Described hydraulic generator unit 6 comprises water turbine and hydraulic turbine generator.
Described water turbine is Francis turbine, and electric motor power is 800kW.
Embodiment 8: see Fig. 1, the energy-storing and power-generating system that draws water based on optically focused solar thermal energy, the condenser in described solar energy light gathering and heat collecting field 1 is linear Fresnel formula solar concentrator, concentrating collector north and south is arranged, East and West direction is followed the tracks of the sun, heat collecting field area 20000m
2, the heat transfer medium in heat collecting field is conduction oil.
Described steam generating system 2 is oil-water-to-water heat exchanger, comprises preheater, steam generator and superheater.
Described steam power machine 3 is pure condensate formula steam turbine, and rated power is 1MW.
Described a kind of energy-storing and power-generating system that draws water based on optically focused solar thermal energy, described pure condensate formula steam turbine 3 and the gearbox that passes through of water pump 4 are directly connected.
Described water pump is Centrifugal water pump, and power is 500kW, and flow is 80T/h, and lift is 60m.
Described a kind of energy-storing and power-generating system that draws water based on optically focused solar thermal energy, described suction basin 5 comprises two, a high-level reservoir, a low level wet pit.
Perpendicular distance between described high-level reservoir and low level wet pit is 50m, and high-level reservoir and low level wet pit volume are equal, and size is 100m
3.
Described a kind of energy-storing and power-generating system that draws water based on optically focused solar thermal energy, described hydraulic generator unit 6 comprises water turbine and hydraulic turbine generator.
Described water turbine is Francis turbine, and electric motor power is 800kW.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. the energy-storage generating apparatus that draws water based on optically focused solar thermal energy, it is characterized in that including: solar energy light gathering and heat collecting field thermal-arrest, heat is delivered to steam generating system by heat-conducting medium, the steam driven steam power machine that steam generating system produces, steam power machine drives water pump, and water pump is drawn into the first high-order wet pit by the water of the second wet pit of low level; The water of the first high-order wet pit impacts to the hydraulic generator unit that is located at downstream, the generating of hydraulic generator unit.
2. a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy as claimed in claim 1, is characterized in that the condenser in described solar energy light gathering and heat collecting field is one or more combinations in slot-type optical collector or linear Fresnel formula solar concentrator or tower condenser.
3. a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy as claimed in claim 1, is characterized in that described steam generating system is oil-water-to-water heat exchanger or salt-water-to-water heat exchanger.
4. a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy as claimed in claim 1, is characterized in that described steam power machine is a kind of in steam turbine or screw power machine.
5. a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy as claimed in claim 1, is characterized in that described low level wet pit is artificial lake or river.
6. a kind of energy-storage generating apparatus that draws water based on optically focused solar thermal energy as claimed in claim 1, is characterized in that described hydraulic generator unit comprises water turbine and hydraulic turbine generator.
7. the energy storing and electricity generating method of drawing water based on optically focused solar thermal energy, is characterized in that step is:
Solar energy is collected through solar energy light gathering and heat collecting field, is converted to and is met steam power machine desired parameters, vapor pressure: 1.28MPa-10MPa by steam generating system; 260 ℃ of-535 ℃ of steam of vapor (steam) temperature, steam driven steam power machine, steam power machine drags water pump, and it is highly 30m-80m that water pump is raised to the water extraction in suction basin, and another suction basin is thus lifted to the water-driven hydraulic generator unit generating in suction basin.
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| CN201310518600.2A CN103603781A (en) | 2013-10-28 | 2013-10-28 | Water pumping energy storage power generation device and method based on condensation solar thermal power |
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| CN201310518600.2A CN103603781A (en) | 2013-10-28 | 2013-10-28 | Water pumping energy storage power generation device and method based on condensation solar thermal power |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010614A (en) * | 1974-11-13 | 1977-03-08 | Arthur David M | Solar radiation collector and system for converting and storing collected solar energy |
| CN102400869A (en) * | 2010-09-19 | 2012-04-04 | 朱楷 | Solar generating system |
| CN102410162A (en) * | 2010-09-20 | 2012-04-11 | 朱楷 | Solar power generation system for pumping and storing energy through Stirling engine |
| CN203548083U (en) * | 2013-10-28 | 2014-04-16 | 兰州大成科技股份有限公司 | Water pumping energy-storing generating set based on condensed-light solar thermal power |
-
2013
- 2013-10-28 CN CN201310518600.2A patent/CN103603781A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010614A (en) * | 1974-11-13 | 1977-03-08 | Arthur David M | Solar radiation collector and system for converting and storing collected solar energy |
| CN102400869A (en) * | 2010-09-19 | 2012-04-04 | 朱楷 | Solar generating system |
| CN102410162A (en) * | 2010-09-20 | 2012-04-11 | 朱楷 | Solar power generation system for pumping and storing energy through Stirling engine |
| CN203548083U (en) * | 2013-10-28 | 2014-04-16 | 兰州大成科技股份有限公司 | Water pumping energy-storing generating set based on condensed-light solar thermal power |
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Application publication date: 20140226 |