CN101915217B - Solar energy and geothermal energy co-generation system - Google Patents
Solar energy and geothermal energy co-generation system Download PDFInfo
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- CN101915217B CN101915217B CN201010247960XA CN201010247960A CN101915217B CN 101915217 B CN101915217 B CN 101915217B CN 201010247960X A CN201010247960X A CN 201010247960XA CN 201010247960 A CN201010247960 A CN 201010247960A CN 101915217 B CN101915217 B CN 101915217B
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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
- Y02E10/10—Geothermal energy
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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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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a solar energy and geothermal energy co-generation system, which consists of a solar hot air flow generation system and at least one geothermal heat pipe generation system; in the solar hot air flow generation system, a turbine generator set is arranged at the bottom of a solar chimney which is in smooth transition connection with a solar heat collection shed; the geothermal heat pipe generation system is installed below the solar heat collection shed; and in the geothermal heat pipe generation system, an evaporation cavity is in sealed connection with a condensation cavity through a tapered pipe cavity, and a generation device is installed in the condensation cavity. The invention has the advantages of simple structure, high degree of automation, effective utilization of the solar energy and geothermal energy, environment-friendly and low-cost operation and maintenance and continuous, stable and efficient generation, practically contributes to energy conservation, emissions reduction and the like, and promotes the sustainable development of cyclic economy.
Description
Technical field the present invention relates to a kind of power generation system, the system of the collaborative generating of especially a kind of solar energy and geothermal power.
Background technique
Chinese patent 200710019125.9 discloses the thermal current power generation system of a kind of geothermal power and solar energy complementation, it comprises chimney, chimney bottom is provided with turbogenerator, there is the thermal-arrest canopy of gathering solar energy the chimney below, be furnished with coiled radiator in the thermal-arrest canopy, coiled radiator is connected with geothermal well, has effectively solved continuous, the stability problem of solar chimney power plant operation, has improved the peak modulation capacity in power station.The problem that exists is: though this system has utilized geothermal resources and solar energy complemental power-generation, but its energy loss is big, generating efficiency is not high, because there be too much direct the contact in this system self with geothermal resources, thereby in the geothermal resources contained mineral substance or impurity to system self, for example pipeline, accumulation of heat pond and coiled radiator etc., will produce certain corrosion or destruction, be unfavorable for the long-term stability operation of system, and the normal operation of this system self also can consume more energy, the electric energy that consumes as recycle pump etc.Simultaneously, the geothermal resources that constantly extract and recharge geothermal well also can influence or destroy ground thermal distribution, geological state and the ecotope etc. of its region.
Summary of the invention
Technical problem to be solved by this invention provides a kind of solar energy and geothermal power co-generation system, the deficiencies in the prior art have been overcome, can effectively utilize solar energy and geothermal power, operation and safeguard that environmental protection, cost are low, generating continous-stable efficient height, and can aspect energy-saving and emission-reduction, make actual contribution.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of solar energy and geothermal power co-generation system, form by solar energy hot gas flow generating system and at least one geothermal power heat generating tube system; In the described solar energy hot gas flow generating system, the solar chimney bottom is provided with the turbine generation unit, and solar chimney and solar energy heating canopy are connected smoothly; Described geothermal power heat generating tube system is installed in solar energy heating canopy below; In the described geothermal power heat generating tube system, evaporating cavity is tightly connected by convergent shape tube chamber and condensation cavity, and electricity generating device is installed in the condensation cavity.
Described solar chimney is provided with heat insulation layer outward.
Described geothermal power heat generating tube system is a plurality of, is that the center is arranged below the solar energy heating canopy symmetrically with the turbine generation unit.
Turbine shaft in the described geothermal power heat generating tube system passes device for sealing magnetic fluid one end and is connected with generator set, and turbine blade is installed on the other end.
In the described geothermal power heat generating tube system, be filled with liquid refrigerant in the evaporating cavity, evaporating cavity is provided with a plurality of heat pipe heat absorption fins outward, and condensation cavity is provided with a plurality of heat pipe heat radiation fins outward, is provided with a plurality of imbibition cores in the outer tube wall of evaporating cavity, convergent shape tube chamber and condensation cavity.
Also be provided with inner tubal wall in described evaporating cavity bottom and the convergent shape tube chamber, the thin and smooth surface of inner tubal wall, inner tubal wall is close to the imbibition core.
Described wick axis is in the arc-shaped to the cross section.
Described evaporating cavity bottom and convergent shape tube chamber also are provided with vacuum heat-insulating layer outward.
It is heart-shaped that described condensation cavity becomes.
Described convergent shape tube chamber is low wide and up narrow tapered, and the top is connected with the condensation cavity bottom.
A kind of solar energy provided by the invention and geothermal power co-generation system, compared with prior art beneficial effect is as follows: 1, the chimney wall of solar chimney of the present invention is provided with heat insulation layer, is adiabatic chimney wall.Like this, the temperature difference of solar chimney top and bottom and pressure reduction will be bigger, just more help the raising of turbine generation unit generating efficiency.
2, solar chimney of the present invention and solar energy heating canopy are connected smoothly.Like this, just effectively raise the hot air flow flow velocity at turbine generation unit place, thereby also just improved the generating efficiency of turbine generation unit.
3, the present invention is respectively arranged with heat pipe heat absorption fin and heat pipe heat radiation fin at the evaporating cavity of geothermal power heat pipe and condensation cavity, thereby has improved geothermal power heat pipe evaporating cavity to emitting the heat dissipation rate of latent heat steam in the absorptivity of geothermal power heat and the condensation cavity.
4, the present invention is arranged on the imbibition core in the outer tube wall of evaporating cavity cavity of geothermal power heat pipe and is arranged on imbibition core in the outer tube wall of condensation cavity cavity of geothermal power heat pipe and is volume, surface area and permeability all greatly and the less axial cross section imbibition core in the arc-shaped of pore effective radius.Like this, just improved the capillary limit of geothermal power heat pipe effectively, i.e. driving force in the working medium cyclic process, the condensation cavity imbibition core of innovative design has simultaneously also increased the heat dissipation rate of condensation cavity to steam and liquid refrigerant.
5, the present invention has the vacuum insulation chamber in the outer installment of the outer tube wall of geothermal power heat pipe adiabatic section.Reduce the energy loss of steam in transmission course so effectively, improved transmission efficiency.
6, the geothermal power heat pipe of the present invention sealed tube that is inferior calabash shape, the convergent shape tube chamber that is embodied in heat pipe becomes low wide and up narrow taper, and the top is connected with the condensation cavity bottom of type intentionally.Like this, the convergent shape tube chamber that is provided with vacuum heat-insulating layer can be assembled the energy of steam effectively, then by throat and most effectively, maximized impulse turbine blade so that turbine blade and coupled turbine shaft high speed rotating, produce considerable moment of torsion, the generating efficiency height.
7, the present invention is being provided with the thin and smooth inner tubal wall of one deck on the internal surface of the convergent shape tube chamber imbibition core of geothermal power heat pipe and on the imbibition in-core surface of condensation cavity bottom.Like this, just improved the entrainment limit of system effectively.Under the sufficiently high situation of rate of steam, still can guarantee system works effectively in entrainment limit, make the liquid refrigerant of condensing reflux can be shut down and carry away from the imbibition wicking surface by steam hardly.
8, between turbine shaft in the geothermal power heat generating tube of the present invention system and the condensation cavity top with the device for sealing magnetic fluid encapsulation, have the zero leakage characteristic that remains unchanged, do not exist and pollute and the Stop Fault problem.Device for sealing magnetic fluid can also make the turbine shaft that passes it be in the state of " suspension " simultaneously, thereby reduces the friction that turbine shaft exists in rotation process greatly, to guarantee its transmission efficiency and work reliably and with long-term.
9, boiler, steam turbine and the generator three big capital equipments of thermal-arrest power plant of geothermal power heat generating tube of the present invention system and vapour-water circulation system be in one, and running simultaneously steadily, rotating speed is high, need not that speed increasing mechanism, rotational speed regulation scope greatly, can not stopped suddenly and easier to be fire-proof and explosion-proof etc.In addition, conventional power generation system as thermoelectricity plant, geothermal power power station, solar energy thermal-power-generating station and seawater, thermo-electric generation station, desert etc., has also that construction cost is low, construction period short, anti-external interference is strong and control characteristics such as degree-of-difficulty factor is low.
10, the geothermal power heat pipe of geothermal power heat generating tube of the present invention system can directly absorb and transform geothermal power, also be, the power generation process of geothermal power heat generating tube system only has energy, be absorption, transmission and the conversion that geothermal power arrives electric energy, there are not the exchange and the transmission of material, do not influence or destroy ground thermal distribution, geological state and the ecotope etc. of its region, so its power generation process is cleaning, environmental protection and efficiently.
11, be collaborative relation of generating electricity between solar energy hot gas flow generating system and the geothermal power heat generating tube system.Flowing fast of air-flow can be taken away the outer tube wall in geothermal power heat generating tube system condensing chamber and the latent heat that the heat pipe heat radiation fin is distributed rapidly in the solar energy heating canopy of solar energy hot gas flow generating system, and then improves the generating efficiency of geothermal power heat generating tube system electricity generating device; Simultaneously, but the latent heat that the outer tube wall in geothermal power heat generating tube system condensing chamber and heat pipe heat radiation fin are distributed is the interior air-flow of heating solar thermal current power generation system solar energy heating canopy again, help improving the temperature difference, pressure and the flow velocity of solar chimney bottom and solar chimney top stream, and then improve the generating efficiency of turbine generation unit in the solar energy hot gas flow generating system.The combination of these two kinds of power generation systems, existing deficiency in the time of can effectively overcoming it and generate electricity is separately separately broken away from the dependence to natural condition such as solar thermal energy, climate condition and geographical environments, realizes the generating of continous-stable.
To sum up, the present invention is simple in structure, the automaticity height, solar energy and geothermal power are effectively utilized, move and safeguard that environmental protection, cost are low, generating continous-stable efficient height, and can make actual contribution at aspects such as energy-saving and emission-reduction, promote the sustainable development of recycling economy.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present invention.
Embodiment
In Fig. 1, a kind of solar energy and geothermal power co-generation system are made up of solar energy hot gas flow generating system and at least one geothermal power heat generating tube system; In the described solar energy hot gas flow generating system, solar chimney 1 bottom is provided with turbine generation unit 2, the described solar chimney 1 outer heat insulation layer that is provided with, and solar chimney 1 is connected smoothly with solar energy heating canopy 3 and forms the tapering type solar energy heating canopy that tilts.Described geothermal power heat generating tube system is installed in solar energy heating canopy 3 belows; The technological scheme of optimizing is: described geothermal power heat generating tube system is a plurality of, be center layout symmetrically below solar energy heating canopy 3 with turbine generation unit 2.
In the described geothermal power heat generating tube system, evaporating cavity 10 is tightly connected by convergent shape tube chamber 13 and condensation cavity 5, in the condensation cavity 5 electricity generating device is installed.Described evaporating cavity 10 bottoms and the convergent shape tube chamber 13 outer vacuum heat-insulating layers 8 that also are provided with, 5 one-tenths hearts of described condensation cavity, described convergent shape tube chamber 13 is low wide and up narrow tapered, and the top is connected with condensation cavity 5 bottoms.The convergent shape tube chamber 13 that is provided with vacuum heat-insulating layer 8 can be assembled the energy of steam effectively, then by throat and most effectively, maximized impulse turbine blade, so that turbine blade 15 and coupled turbine shaft 17 high speed rotating produce considerable moment of torsion, the generating efficiency height.
Turbine shaft 17 in the electricity generating device in the described geothermal power heat generating tube system passes device for sealing magnetic fluid 16 1 ends and is connected with generator set 18, and turbine blade 15 is installed on the other end.Turbine blade 15 faces throat 7, and axis coincides, and the diameter of turbine blade 15 is slightly less than the diameter at these places in the condensation cavity 5, to obtain better transformation efficiency.Generator set 18 can be installed in the top of solar energy heating canopy 3, also can be installed in the bottom of solar energy heating canopy 3.
In the described geothermal power heat generating tube system, be filled with liquid refrigerant 12 in the evaporating cavity 10, be provided with a plurality of heat pipes heat absorption fins 11 outside the evaporating cavity 10, be provided with a plurality of heat pipe heat radiation fins 6 outside the condensation cavity 5, be provided with a plurality of imbibition cores 4 in the outer tube wall 9 of evaporating cavity 10, convergent shape tube chamber 13 and condensation cavity 5.Require that for imbibition core 4 enough big capillary pumped pressure is arranged, or less tube core working aperture; Less liquid flowing resistance promptly has higher permeability; The good heat transfer characteristic promptly has little radially thermal resistance; Good process repeatability and reliability are promptly made simply low price.Described imbibition core 4 axial cross sections are in the arc-shaped.
Also be provided with inner tubal wall 14 in described evaporating cavity 10 bottoms and the convergent shape tube chamber 13, the thin and smooth surface of inner tubal wall 14, inner tubal wall 14 is close to imbibition core 4.Such structure guarantees system works effectively in entrainment limit, makes the liquid refrigerant 12 of condensing reflux can be shut down from imbibition core 4 surfaces and carry away by steam hardly.Particularly all the more so in the throat 7 of condensation cavity 5 and convergent shape tube chamber 13 connection parts, because the vapor stream speed that should locate is maximum.
Claims (10)
1. solar energy and geothermal power co-generation system is characterized in that: be made up of solar energy hot gas flow generating system and at least one geothermal power heat generating tube system;
In the described solar energy hot gas flow generating system, solar chimney (1) bottom is provided with turbine generation unit (2), and solar chimney (1) is connected smoothly with solar energy heating canopy (3);
Described geothermal power heat generating tube system is installed in solar energy heating canopy (3) below;
In the described geothermal power heat generating tube system, evaporating cavity (10) is connected with condensation cavity (5) vacuum seal by convergent shape tube chamber (13), and condensation cavity is equipped with electricity generating device in (5).
2. solar energy according to claim 1 and geothermal power co-generation system is characterized in that: the outer heat insulation layer that is provided with of described solar chimney (1).
3. solar energy according to claim 1 and geothermal power co-generation system is characterized in that: described geothermal power heat generating tube system is a plurality of, is that the center is arranged symmetrically in solar energy heating canopy (3) below with turbine generation unit (2).
4. according to claim 1 or 3 described solar energy and geothermal power co-generation system, it is characterized in that: the turbine shaft (17) in the described geothermal power heat generating tube system passes device for sealing magnetic fluid (16) one ends and is connected with generator set (18), and turbine blade (15) is installed on the other end.
5. according to claim 1 or 3 described solar energy and geothermal power co-generation system, it is characterized in that: in the described geothermal power heat generating tube system, be filled with liquid refrigerant (12) in the evaporating cavity (10), be provided with a plurality of heat pipes heat absorption fins (11) outside the evaporating cavity (10), condensation cavity (5) is outer to be provided with a plurality of heat pipe heat radiation fins (6), is provided with a plurality of imbibition cores (4) in the outer tube wall (9) of evaporating cavity (10), convergent shape tube chamber (13) and condensation cavity (5).
6. solar energy according to claim 5 and geothermal power co-generation system, it is characterized in that: also be provided with inner tubal wall (14) in described evaporating cavity (10) bottom and the convergent shape tube chamber (13), the thin and smooth surface of inner tubal wall (14), inner tubal wall (14) is close to imbibition core (4).
7. solar energy according to claim 6 and geothermal power co-generation system is characterized in that: described imbibition core (4) axial cross section is in the arc-shaped.
8. solar energy according to claim 1 and geothermal power co-generation system is characterized in that: the outer vacuum heat-insulating layer (8) that also is provided with of described evaporating cavity (10) bottom and convergent shape tube chamber (13).
9. solar energy according to claim 1 and geothermal power co-generation system is characterized in that: described condensation cavity (5) becomes heart-shaped.
10. solar energy according to claim 1 and geothermal power co-generation system is characterized in that: described convergent shape tube chamber (13) is low wide and up narrow tapered, and the top is connected with condensation cavity (5) bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010247960XA CN101915217B (en) | 2010-08-07 | 2010-08-07 | Solar energy and geothermal energy co-generation system |
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| CN201010247960XA CN101915217B (en) | 2010-08-07 | 2010-08-07 | Solar energy and geothermal energy co-generation system |
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| CN101915217A CN101915217A (en) | 2010-12-15 |
| CN101915217B true CN101915217B (en) | 2011-12-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3936652A (en) * | 1974-03-18 | 1976-02-03 | Levine Steven K | Power system |
| EP1577549A1 (en) * | 2004-03-16 | 2005-09-21 | Abb Research Ltd. | Apparatus for storing thermal energy and generating electricity |
| CN200982278Y (en) * | 2006-07-13 | 2007-11-28 | 杨德武 | Geothermal energy air different temperature generation device |
| US7854119B2 (en) * | 2007-07-07 | 2010-12-21 | David Joseph Strain | Hydroelectric device |
| US20090094981A1 (en) * | 2007-10-12 | 2009-04-16 | General Electric Company | Wind turbine geothermal heating and cooling system |
| CN101182832A (en) * | 2007-11-20 | 2008-05-21 | 西安交通大学 | Heat energy and solar complementary thermal current power generation system |
| CN201225178Y (en) * | 2008-03-03 | 2009-04-22 | 张英凡 | CO2 heating power joint production ground heat power generation technology equipment |
| CN201539373U (en) * | 2009-07-17 | 2010-08-04 | 龚智勇 | Geothermal or solar thermoelectric engine device |
| CN101634281A (en) * | 2009-08-23 | 2010-01-27 | 刘君才 | Geothermal hot air power station using inflatable chimney |
| CN201739091U (en) * | 2010-08-07 | 2011-02-09 | 葛洲坝集团电力有限责任公司 | Solar energy and geothermal energy cooperative power generating system |
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Effective date of registration: 20151125 Address after: 443002 Yichang Yanjiang Road, Hubei, No. 23 Patentee after: Gezhouba Group's Electric Power Company Ltd. Patentee after: Qinghai Transmission and Distribution Engineering Co., Ltd. Address before: 443002 No. 22 Yanjiang Avenue, Hubei, Yichang Patentee before: Gezhouba Group's Electric Power Company Ltd. |