CN108322096A - A kind of underground heat method for generating electricity by utilizing temperature difference and system - Google Patents
A kind of underground heat method for generating electricity by utilizing temperature difference and system Download PDFInfo
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- CN108322096A CN108322096A CN201810125621.0A CN201810125621A CN108322096A CN 108322096 A CN108322096 A CN 108322096A CN 201810125621 A CN201810125621 A CN 201810125621A CN 108322096 A CN108322096 A CN 108322096A
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- underground
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- cooling water
- electric generation
- temperature
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
-
- 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
Abstract
A kind of underground heat method for generating electricity by utilizing temperature difference and system are to utilize the geothermal temperature difference, realize that thermoelectric generation in the method for the underground direct generation of electricity, is made of underground thermo-electric generation system and circulation.After high-pressure cooling water flows through underground temperature difference electricity generation device, the cold end of temperature-difference power generation module is set to keep a lower temperature, the hot junction of temperature-difference power generation module is contacted with geothermal layer, temperature-difference power generation module hot junction forms a temperature difference with cold end, to convert heat energy into electric energy, recirculated water back flows back into underground after ground heat energy utilization equipment or heat dissipation equipment cooling, realizes that water resource recycles.
Description
Technical field
The present invention relates to a kind of methods using thermo-electric generation, it is sent out with the temperature difference formed in well using geothermal energy resources
The method and system of electricity.
Background technology
Geothermal energy resources are as a kind of new clean energy resource, and advantage is notable compared with other energy, and large-scale developing and utilizing is
The measure of Global climate change and energy-saving and emission-reduction is coped with, meanwhile, huge resource reserve determines that underground heat necessarily becomes the mankind not
One of the important replacement new energy come.But just at this stage from the point of view of, the exploitation of geothermal energy resources is based primarily upon enhanced geothermal system
(EGS) foundation is actually mechanical energy the thermal energy of underground, then mechanical energy is changed into the energy of electric energy again
Measure transition process or be geothermal power generation, this generation mode is since there are many energy conversion times, so the utilization rate of energy is very
Low, urgent need finds new, efficient generation mode.
Currently, thermoelectric generation has been applied to many fields, it is according to Sai Beike (Seebeck) effect, by two kinds
One end of different types of thermo-electric converting material N and P combines and places it in the condition of high temperature, and the other end opens a way and gives low temperature
When, then form potential difference in low temperature open end.Thermoelectric generation is combined with Development of Geothermal Resources, and thermal energy and electric energy may be implemented
Direct efficient conversion.
Invention content
The present invention is to solve the extraction of geothermal energy present in the known technology technical problem that difficulty is big, energy loss is high, is carried
For a kind of underground heat method for generating electricity by utilizing temperature difference and system, the temperature difference is generated using underground heat, realizes that thermoelectric generation is directly sent out in underground
The method of electricity, the mode for directly replacing traditional water filling that heat is taken to carry out geothermal exploitation.
The technical solution adopted by the present invention to solve the technical problems, a kind of system of underground heat thermo-electric generation, including underground
Thermo-electric generation system and circulation.The underground thermo-electric generation system, it is characterised in that it is by adiabatic section and generating section group
At one layer of vacuum insulation layer is installed as thermal insulation layer in the main body adiabatic section in main body inner wall, thermal insulation layer inner wall adds one layer to resist
Corrosion material is inner wall layer (with cooling water contact portion), to tubing string of the composition with thermal insulation layer.The main body generating section, it is special
It levies and is to use two kinds of cyclic annular semiconductors for a generating set, hot junction (heat absorbing end) is contacted with main body tube wall, cold end (radiating end)
It is contacted with etch resistant layer, the connection of thermoelectric generator hot junction pin, cold end pin disconnects, as positive-negative power line, according to practical institute
More thermo-electric generation groups need to be connected and to form temperature-difference power generation module and obtain required voltage and current, the thermoelectric generator
Cold end surface need to apply one layer of corrosion-resistant material, prevent recirculated water from generating corrosiveness to generator.The circulation, import
End is thermo-electric generation system main body hollow tubule, and outlet end is thermo-electric generation system main body annular space, inlet end and water outlet end
It is connected by cooling water circulation pipeline, cooling water circulating pump, the cooling water is installed on the cooling water circulation pipeline
Radiator is installed on the cooling water circulation pipeline between circulating pump and outlet end, heat dissipation is installed on the outer wall of the radiator
Fan.
After high-pressure cooling water flows through temperature difference electricity generation device, the cold end of temperature-difference power generation module is made to keep a lower temperature,
After thermo-electric generation system hot junction is in contact with underground heat, temperature-difference power generation module hot junction forms a temperature difference with cold end, thus will
Thermal energy is converted to electric energy, and recirculated water back flows back into underground after the heat dissipation of ground heat dissipation equipment, realizes that water resource recycles.
The present invention has the advantages that following compared with prior art：
1, the present invention uses thermoelectric generation, keeps entire generating device structure simple, minimizes, applied widely, no
It can be applied only in the power generation of business geothermal energy resources, can also be applied in civilian power generation, heating, be that geothermal energy resources obtain fully
It utilizes, there is very high energy-saving benefit.
2, the present invention uses the direct generation of electricity of thermoelectric generator underground, and no mechanical transmission component is reliable for operation, reduces heat and exists
Thermal losses in transmission makes the transfer efficiency of thermal energy and electric energy be improved.
Description of the drawings
The present invention is further described with example below in conjunction with the accompanying drawings.
Fig. 1 is underground thermo-electric generation system and ground cold water circulating system overall structure figure.
Fig. 2 is underground thermo-electric generation system adiabatic section transverse cross-sectional view.
Fig. 3 is underground thermo-electric generation system generating section transverse cross-sectional view.
Fig. 4 is temperature-difference power generation module longitudinal sectional drawing.
1. geothermal layer in Fig. 1,2. underground thermo-electric generation system generating sections, 3. underground thermo-electric generation systems are adiabatic, 4. cycles
Water inlet end, 5. circulating water outlet ends, 6. cooling water circulation pipelines, 7. radiators, 8. radiator fans, 9. cooling water circulating pumps
1. outer wall layer in Fig. 2,2. vacuum heat-insulating layers, 3. etch resistant layers, 4. thermal insulation layers
1. thermoelectric generator hot junction in Fig. 3,2. semi-conducting materials, 3. thermoelectric generator cold ends, 4 circulating chilled waters are hollow, and 5.
Nozzle
1. ceramic wafer in Fig. 4,2.N type semi-conducting materials, 3.P type semi-conducting materials.
Specific implementation mode
In the embodiment shown in fig. 1, thermo-electric generation system is mounted in ground 1 horizontal well wellbore of hot arc, thermo-electric generation system
The generating section 2 of system is in underground heat rock stratum position, and cooling water is pumped into from input end 4, flows through that thermo-electric generation system is hollow to make the temperature difference send out
Electric cold end is in low temperature environment, and thermoelectric generator hot junction is in hot environment, after and then recirculated water is recycled from outlet end 5,
By 6 inflow heat exchanger 7 of cooling water circulation pipeline, radiator fan 8 radiates, finally by cooling water circulating pump 9 by cooling water
It is pumped into underground cycle operation.
In the embodiment depicted in figure 2, it installs one layer of vacuum heat-insulating layer 2 in the main body of thermo-electric generation system adiabatic section additional, is tightly attached to
Outer wall layer 1 applies one layer of etch resistant layer 3 on separation layer, and one layer of thermal insulation layer 4 is installed additional in water inlet pipe outer wall.
In the embodiment shown in fig. 3, thermoelectric generator hot junction 1 is bonded with outer wall layer, thermoelectric generator cold end 3 and anti-corruption
Corrosion material is bonded, and water inlet pipe side wall installs nozzle 5 additional.
In the embodiment shown in fig. 4, ceramic wafer 1, N-type semiconductor material 2 and p-type semiconductor material 3 form a power generation
Unit, each from left to right group of bottom end connection, second pin of first group of tip portion and the first of second group pin connect
It connects, second group of second pin is connect with first pin of third group.Multiple generating set series connection, to constitute temperature difference hair
Electric module, first pin of first generating set and second pin of the last one generating set are drawn with conducting wire.
Cooling water flows through thermo-electric generation system generating section from water inlet pipe, and making temperature-difference power generation module cold end, there are one relatively low
Temperature, thermoelectric generator hot junction are contacted with underground heat interval, and at this moment just there are a temperature difference, the temperature difference in the hot junction of generating set with cold end
The two pins that electricity generation module is drawn there has been an electromotive force, and last recirculated water is after the heat exchange of ground heat transmission equipment, by cooling water
Cooling water is pumped into underground and continues cycling through work by circulating pump.
Claims (7)
1. a kind of underground heat thermo-electric generation system, it is characterised in that：A kind of system of underground heat thermo-electric generation, including underground thermo-electric generation
System, circulation.The underground thermo-electric generation system, it is characterised in that it is made of adiabatic section and generating section, the master
Body adiabatic section, main body is interior to install one layer of vacuum heat-insulating layer, and thermal insulation layer inner wall applies one layer of corrosion-resistant material.The main body generating section,
It is characterized in that using two kinds of cyclic annular semiconductors for a generating set.The circulation, input end are thermo-electric generation system
Water inlet pipe, outlet end are the outer annular space of water inlet pipe pipe, and inlet end is connected by cooling water circulation pipeline with water outlet end, institute
It states and cooling water circulating pump is installed on cooling water circulation pipeline, the cooling water circulation between the cooling water circulating pump and outlet end
Radiator is installed on pipeline, radiator fan is installed on the outer wall of the radiator.
2. a kind of system for geothermal production of electricity described in accordance with the claim 1, it is characterised in that：Thermoelectric generator hot junction (heat absorbing end) with
Main body tube wall contacts, and cold end (radiating end) is contacted with corrosion-resistant material layer.
3. a kind of system for geothermal production of electricity according to claim 2, it is characterised in that：Thermo-electric generation system can have multiple temperature difference
Generating set forms, and specifically depends on the circumstances.
4. a kind of system for geothermal production of electricity described in accordance with the claim 1, it is characterised in that：Water inlet line outer wall is coated with heat-insulated material
Material.
5. a kind of system for geothermal production of electricity described in accordance with the claim 1, it is characterised in that：Thermo-electric generation system generating section water inlet pipe
Equipped at least one nozzle.
6. a kind of system for geothermal production of electricity according to claim 5, it is characterised in that：Nozzle is located at thermo-electric generation system power generation
Section water inlet pipe side-walls.
7. a kind of underground heat method for generating electricity by utilizing temperature difference, it is characterised in that：Cooling water flows through thermo-electric generation system generating section from water inlet pipe, makes
There are one relatively low temperature, thermoelectric generator hot junction contacts temperature-difference power generation module cold end with underground heat interval, at this moment generating set
Hot junction just has a temperature difference, the two pins that temperature-difference power generation module is drawn to there has been an electromotive force, finally recycle with cold end
Water is flowed out from outlet end, after the heat exchange of ground heat transmission equipment, cooling water is pumped into underground by cooling water circulating pump and continues cycling through work
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810125621.0A CN108322096A (en) | 2018-02-08 | 2018-02-08 | A kind of underground heat method for generating electricity by utilizing temperature difference and system |
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| CN201810125621.0A CN108322096A (en) | 2018-02-08 | 2018-02-08 | A kind of underground heat method for generating electricity by utilizing temperature difference and system |
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| CN108322096A true CN108322096A (en) | 2018-07-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724278A (en) * | 2018-12-27 | 2019-05-07 | 中国矿业大学 | A kind of coal-field fire comprehensive utilization system for heat energy |
| CN110847886A (en) * | 2019-10-23 | 2020-02-28 | 北京科技大学 | Deep mine wireless drilling stress meter based on geothermal thermoelectric power generation |
| NL1044009B1 (en) * | 2021-04-22 | 2022-11-01 | Lodewijk Peter Ruijters Drs | Shallow depth geothermal electricity generator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186543A (en) * | 1995-06-07 | 1998-07-01 | 詹姆斯·H·施内尔 | System for geothermal production of electricity |
| CN103151966A (en) * | 2011-12-07 | 2013-06-12 | 陕西科林能源发展股份有限公司 | Terrestrial heat source thermoelectric conversion device |
| CN103166516A (en) * | 2011-12-08 | 2013-06-19 | 陕西科林能源发展股份有限公司 | Geothermal power generation system |
| CN203839476U (en) * | 2014-04-01 | 2014-09-17 | 超威电源有限公司 | Lead acid storage battery charging rack water bath groove uniform water distribution cooling device |
| CN105932909A (en) * | 2016-06-29 | 2016-09-07 | 中国石油大学(华东) | External cold source type hot dry rock thermoelectric power generation system and method |
-
2018
- 2018-02-08 CN CN201810125621.0A patent/CN108322096A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186543A (en) * | 1995-06-07 | 1998-07-01 | 詹姆斯·H·施内尔 | System for geothermal production of electricity |
| CN103151966A (en) * | 2011-12-07 | 2013-06-12 | 陕西科林能源发展股份有限公司 | Terrestrial heat source thermoelectric conversion device |
| CN103166516A (en) * | 2011-12-08 | 2013-06-19 | 陕西科林能源发展股份有限公司 | Geothermal power generation system |
| CN203839476U (en) * | 2014-04-01 | 2014-09-17 | 超威电源有限公司 | Lead acid storage battery charging rack water bath groove uniform water distribution cooling device |
| CN105932909A (en) * | 2016-06-29 | 2016-09-07 | 中国石油大学(华东) | External cold source type hot dry rock thermoelectric power generation system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109724278A (en) * | 2018-12-27 | 2019-05-07 | 中国矿业大学 | A kind of coal-field fire comprehensive utilization system for heat energy |
| CN110847886A (en) * | 2019-10-23 | 2020-02-28 | 北京科技大学 | Deep mine wireless drilling stress meter based on geothermal thermoelectric power generation |
| NL1044009B1 (en) * | 2021-04-22 | 2022-11-01 | Lodewijk Peter Ruijters Drs | Shallow depth geothermal electricity generator |
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Application publication date: 20180724 |