CN105932909B - Additional low-temperature receiver type hot dry rock thermoelectric heat generation system and method - Google Patents
Additional low-temperature receiver type hot dry rock thermoelectric heat generation system and method Download PDFInfo
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- CN105932909B CN105932909B CN201610495099.6A CN201610495099A CN105932909B CN 105932909 B CN105932909 B CN 105932909B CN 201610495099 A CN201610495099 A CN 201610495099A CN 105932909 B CN105932909 B CN 105932909B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Abstract
The present invention relates to a kind of additional low-temperature receiver type hot dry rock thermoelectric heat generation system, the system includes：Cooling medium storage device, cooling medium ground flowline, cooling medium injection device, underground thermoelectric generation module, cooling medium flow into pipeline, cooling medium effuser line, cathode conductor and positive wire；Underground thermoelectric generation module is all placed in the range of hot dry rock reservoir；Cooling medium storage device, cooling medium ground flowline, cooling medium injection device, cooling medium flow into distributing manifold, thermoelectric generation module underground radiator, the remittance of cooling medium outflow collector tube, the cooling medium effuser line composition cooling medium flowing circulatory system；Underground thermoelectric generation module, positive wire, ground load and cathode conductor are in turn connected to form closed circuit.Relative to prior art, the present invention only needs to drill the geothermal well of hot dry rock reservoir flatly, without building artificial heat storage, realizes that hot dry rock reservoir generates electricity on the spot using the electrothermal module for being arranged in underground.
Description
Technical field
The invention belongs to geothermal power generation field, in particular it relates to a kind of additional low-temperature receiver type hot dry rock thermoelectric heat generation system with
Method.
Technical background
Geothermal energy is stored in a kind of huge natural resources of earth interior, and reserves are big and cleanliness without any pollution, for a long time with
To be paid close attention to by countries in the world.Energy-saving and emission-reduction, environmental protection can be realized by developing and utilizing geothermal energy resources, it is considered to be solve mist
A kind of effective means of haze.What is mainly developed and utilized at present is hot-water type and vapor, is commonly applied to heat, supports
Grow and the field such as generate electricity.Comparatively speaking, the exploitation of hot dry rock is just risen, but its reserves has significantly larger than been used widely
Hot-water type and vapor.Generating is considered as the most important application field of hot dry rock.
Hot dry rock generates electricity and mainly forms artificial heat storage by hydraulic fracturing, then injects water or titanium dioxide by injection well
The working medium such as carbon, after carrying out energy exchange with artificial heat storage, output high-temperature water or steam from producing well, it is sent into conventional geothermal power generation
Device generates electricity.This method needs at least to need a bite injection well and a bite producing well, and reservoir needs to carry out artificial fracturing, and
Need constantly to inject cycle fluid water or carbon dioxide during operation.The construction cost and operating cost of the technology are higher.
With the progress of material technology, thermoelectric power generation technology is gradually risen.Apply respectively when in conductor or semiconductor both ends
During different temperature, due to Seebeck effect, electromotive force will be produced between high-temperature part and low temperature part.Using this existing
As that just heat energy can be converted directly into electric energy using thermoelectric generation elements.This thermoelectric power generation technology is sent out in waste heat of automotive exhaust gas
The new energy fields such as electricity, industrial afterheat power generation, solar power generation are used widely.
The problem of existing for the generating of traditional hot dry rock, it is contemplated that long-term, the stable thermal source supply of hot dry rock, with reference to thermoelectricity
Generation technology, propose a kind of additional low-temperature receiver type hot dry rock thermoelectric heat generation system and method, can not only save a large amount of construction costs and
Operating cost, and also ensure stable electric energy supply.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of additional low-temperature receiver type hot dry rock thermoelectric heat generation system and side
Method.
To achieve the above object, the present invention uses following proposal：
Additional low-temperature receiver type hot dry rock thermoelectric heat generation system, including：Cooling medium storage device, cooling medium ground flow duct
Line, cooling medium injection device, underground thermoelectric generation module, cooling medium flow into pipeline, cooling medium effuser line, negative pole and led
Line and positive wire；Described underground thermoelectric generation module is located in pit shaft, and underground thermoelectric generation module is all placed in hot dry rock
In the range of reservoir, underground thermoelectric generation module directly contacts with exposed hot dry rock reservoir, and exposed hot dry rock reservoir forms outer
Add the high temperature hot junction of low-temperature receiver type hot dry rock thermoelectric power generation；Cooling medium injection device and cooling medium storage device are located at ground,
Cooling medium injection device is connected by cooling medium ground flowline with cooling medium storage device；Thermoelectric generation module is set
There is cooling medium to flow into distributing manifold, thermoelectric generation module underground radiator, cooling medium outflow collector tube to converge；Cooling medium is noted
The arrival end for entering device and the cooling medium inflow distributing manifold in the thermoelectric generation module of underground flows into pipeline by cooling medium
It is connected, the cooling medium in the thermoelectric generation module of underground flows into the port of export of distributing manifold and the heat in the thermoelectric generation module of underground
The arrival end of electric electricity generation module underground radiator is connected, the thermoelectric generation module underground radiator in the thermoelectric generation module of underground
The arrival end that the port of export converges with cooling medium outflow collector tube is connected, and the port of export that cooling medium outflow collector tube converges passes through cooling
Medium effuser line is connected with cooling medium storage device；Cooling medium injection device is situated between after cooling medium is pressurized by cooling down
The cooling medium that matter inflow line enters in the thermoelectric generation module of underground flows into the arrival end of distributing manifold, through underground thermoelectric power generation
The cooling medium that cooling medium in module is flowed into after distributing manifold distribution flows into the outflow of the distributing manifold port of export from cooling medium
The arrival end of the thermoelectric generation module underground radiator entered afterwards in underground heat disaster electricity electricity generation module, flows through thermoelectric generation module underground
Exchanged heat inside radiator and in this place；The port of export stream of cooling medium after heat exchange from thermoelectric generation module underground radiator
Go out and enter the arrival end that cooling medium stream goes out liquid collecting manifold, it is cold after the heat exchange after cooling medium outflow collector tube collects
But the port of export outflow that medium converges from cooling medium outflow collector tube, cooling medium is flowed back to by cooling medium effuser line and stored
Device；Cooling medium storage device, cooling medium ground flowline, cooling medium injection device, cooling medium flow into distribution
Manifold, thermoelectric generation module underground radiator, cooling medium outflow collector tube converges, cooling medium effuser line forms the cold of closure
But the media flow circulatory system, the low temperature cold end of additional low-temperature receiver type hot dry rock thermoelectric power generation is formed；Described underground thermoelectric power generation
Module, positive wire, ground load and cathode conductor are in turn connected to form closed circuit.
Relative to prior art, the beneficial effects of the present invention are：
1st, a bite is only needed to drill the geothermal well of hot dry rock reservoir.
2nd, without building artificial heat storage.
3rd, realize that hot dry rock reservoir generates electricity using the electrothermal module for being arranged in underground.
4th, the heat energy of thermoelectric heat generation system cold end circulation extraction can be used for heating, cultivate, bathing etc. in addition to the generation of electricity should
With.
Brief description of the drawings
Fig. 1 is the structural representation of additional low-temperature receiver type hot dry rock thermoelectric heat generation system；
Fig. 2 is the horizontal cross-section structure diagram of underground thermoelectric generation module；
Fig. 3 is the longitudinal profile structure schematic of underground thermoelectric generation module；
Fig. 4 is the structural representation that cooling medium flows into piping；
Fig. 5 is the structural representation of cooling medium effuser system；
In figure, 10, hot dry rock reservoir；11st, hot dry rock superstratum；8th, pit shaft；20th, cooling medium injection device；21st, it is cold
But medium storage device；31st, underground thermoelectric generation module；41st, cooling medium flows into pipeline；42nd, cooling medium effuser line；
43rd, cooling medium ground flowline；61st, cathode conductor；62nd, positive wire；71st, ground load；100th, cooling medium flows out
Liquid collecting manifold；101st, cooling medium flows into distributing manifold；102nd, thermoelectric generation module underground radiator；103rd, cold end insulation heat release
Component；104th, cold side metal conductor group；105th, circumferentially thermoelectric power generation semiconductor group；106th, hot side metal conductor group；107、
Insulate heated components in hot junction；121st, underground thermoelectric generation module negative pole；122nd, underground thermoelectric generation module positive pole.
Embodiment
As shown in figure 1, hot dry rock reservoir 10 is the thousands of rice of buried depth, temperature is not present fluid more than 200 DEG C, inside or only had
The high heat rock mass of a small amount of underground fluid；What described hot dry rock superstratum 11 was covered by hot dry rock reservoir 10 with up to earth's surface
The thermal insulation layer such as sedimentary rock or soil, its formation temperature is from bottom to up in trend is gradually reduced, less than hot dry rock reservoir temperature；Pit shaft 8
It is the cell structure for drilling stratum, sequentially passes through hot dry rock superstratum 11 and hot dry rock reservoir 10；In hot dry rock overlying
The part of pit shaft 8 in the range of layer 11 is completed using setting of casing well cementation mode, the part of pit shaft 8 in the range of hot dry rock reservoir 10
Completed using barefoot completion mode；Pit shaft 8 is underground thermoelectric generation module 31, cooling medium inflow pipeline 41, cooling medium stream
Go out pipeline 42, cathode conductor 61 and positive wire 62 and lower channel is provided；Pit shaft 8 in the range of hot dry rock superstratum 11
Part filling insulating medium.
As shown in figure 1, additional low-temperature receiver type hot dry rock thermoelectric heat generation system, including：Cooling medium storage device 21, cooling are situated between
Quality face flowline 43, cooling medium injection device 20, underground thermoelectric generation module 31, cooling medium flow into pipeline 41, cold
But medium effuser line 42, cathode conductor 61 and positive wire 62；Described underground thermoelectric generation module 31 is located in pit shaft 8,
Underground thermoelectric generation module 31 is all placed in the range of hot dry rock reservoir 10, and underground thermoelectric generation module 31 is directly done with exposed
Hot rock reservoir 10 contacts, and exposed hot dry rock reservoir 10 forms the high temperature hot junction of additional low-temperature receiver type hot dry rock thermoelectric power generation；Cooling
Medium injection device 20 and cooling medium storage device 21 are located at ground, and cooling medium injection device 20 passes through cooling medium ground
Flowline 43 is connected with cooling medium storage device 21；Thermoelectric generation module 31 be provided with cooling medium flow into distributing manifold 101,
Thermoelectric generation module underground radiator 102, cooling medium outflow collector tube remittance 100；Cooling medium injection device 20 and underground heat disaster
The arrival end that cooling medium in electric electricity generation module 31 flows into distributing manifold 101 is connected by cooling medium inflow pipeline 41, well
Cooling medium in lower thermoelectric generation module 31 flows into the port of export of distributing manifold 101 and the heat in underground thermoelectric generation module 31
The arrival end of electric electricity generation module underground radiator 102 is connected, and the thermoelectric generation module underground in underground thermoelectric generation module 31 dissipates
The port of export of hot device 102 is connected with the arrival end of cooling medium outflow collector tube remittance 100, cooling medium outflow collector tube remittance 100
The port of export be connected by cooling medium effuser line 42 with cooling medium storage device 21；Cooling medium injection device 20 will be cold
But pipeline 41 is flowed into by cooling medium after medium supercharging and flows into distribution into the cooling medium in underground thermoelectric generation module 31
The arrival end of manifold 101, flow into the cooling after distributing manifold 101 distributes through the cooling medium in underground thermoelectric generation module 31 and be situated between
Matter flows into the thermoelectric generation module entered after the outflow of the port of export of distributing manifold 101 in underground heat disaster electricity electricity generation module 31 from cooling medium
The arrival end of underground radiator 102, flow through the inside of thermoelectric generation module underground radiator 102 and exchanged heat in this place；Heat exchange
The port of export of cooling medium afterwards from thermoelectric generation module underground radiator 102 flows out into cooling medium outflow collector tube and converged
100 arrival end, the cooling medium after heat exchange after cooling medium outflow collector tube remittance 100 collects flows out from cooling medium to be collected
The port of export outflow of liquid pipe remittance 100, cooling medium storage device 21 is flowed back to by cooling medium effuser line 42；Cooling medium is deposited
Storage device 21, cooling medium ground flowline 43, cooling medium injection device 20, cooling medium flow into distributing manifold 101, heat
Electric electricity generation module underground radiator 102, cooling medium outflow collector tube converge what 100, cooling medium effuser line 42 composition closed
Cooling medium flows the circulatory system, forms the low temperature cold end of additional low-temperature receiver type hot dry rock thermoelectric power generation；Described underground thermoelectricity hair
Electric module 32, positive wire 62, ground load 71 and cathode conductor 61 are in turn connected to form a closed circuit.
As shown in Figures 2 and 3, underground thermoelectric generation module 31, including：Cooling medium outflow collector tube remittance 100, cooling are situated between
Mass flow enters distributing manifold 101, thermoelectric generation module underground radiator 102, cold end insulating ceramic film 103, cold side metal conductor
104th, thermoelectric power generation semiconductor group 105, hot side metal conductor group 106, hot junction insulation heated components 107, underground thermoelectric power generation mould
Block negative pole 121, underground thermoelectric generation module positive pole 122；Hot junction insulation heated components 107 are located at underground thermoelectric generation module 31
Outer layer, directly contacted with exposed hot dry rock reservoir 10；Described hot junction insulation 107 cylindrical structure of heated components；Hot junction
Metallic conductor group 106 is located at the inner side of hot junction insulation heated components 107, is in close contact with hot junction insulation heated components 107；Thermoelectricity is sent out
Electric semiconductor group 105 is located at the inner side of hot side metal conductor group 106, and outside and the hot side metal of thermoelectric power generation semiconductor group 105 are led
Body group 106 is in close contact；Cold side metal conductor group 104 is located at the inner side of thermoelectric power generation semiconductor group 105 and partly led with thermoelectric power generation
The inner side of body group 105 is in close contact；Cold end insulation discharge hot component 103 be located at the inner side of cold side metal conductor group 104 and with cold end gold
Category conductor group 104 is in close contact；Described 103 cylindrical structure of cold end insulation discharge hot component；Thermoelectric generation module underground dissipates
Hot device 102 is located at the inner side of cold end insulation discharge hot component 103 and is in close contact with cold end insulation discharge hot component 103, is underground thermoelectricity
Electricity generation module 31 provides heat exchange place；Cooling medium flows into distributing manifold 101 and is located in thermoelectric generation module underground radiator 102
Side, it is connected with the arrival end of thermoelectric generation module underground radiator 102, and pipeline 41 is flowed into cooling medium by conduit and is connected；
Cooling medium outflow collector tube converges 100 positioned at the inner side of cooling medium inflow distributing manifold 101, is radiated with thermoelectric generation module underground
The port of export of device 102 is connected, and is connected by cooling medium effuser line 42 with cooling medium storage device 21.
Described thermoelectric power generation semiconductor group 105 is located at the inner side of hot side metal conductor group 106, cold side metal conductor group 104
Outside；Described thermoelectric power generation semiconductor group 105 is by some groups of N-type semiconductors and P-type semiconductor alternating, paired arrangement；If by
Dry group N-type semiconductor and P-type semiconductor alternating, one end of the thermoelectric power generation semiconductor group 105 formed in pairs are placed in high temperature hot junction
In, the other end is placed in low temperature cold end；The N-type semiconductor being placed in high temperature hot junction is N-type semiconductor hot junction, P-type semiconductor P
Type semiconductor hot junction；The N-type semiconductor being placed in low temperature cold end is N-type semiconductor cold end, P-type semiconductor is that P-type semiconductor is cold
End；
Described hot side metal conductor group 106 is made up of multiple conductors, for connecting the thermoelectricity being placed in high temperature hot junction hair
N-type semiconductor hot junction and P-type semiconductor hot junction in electric semiconductor group 105；Described cold side metal conductor group 104 is led by multiple
Body is formed, and the N-type semiconductor cold end and p-type in the thermoelectric power generation semiconductor group 105 being placed in for connection in low temperature cold end are partly led
Body cold end；
In described thermoelectric power generation semiconductor group 105, the N-type semiconductor cold end of first group of thermoelectric power generation semiconductor group passes through
The external underground thermoelectric generation module negative pole 121 of wire；The N-type semiconductor hot junction of first group of thermoelectric power generation semiconductor group and p-type half
Conductor hot junction is connected by first conductor in hot side metal conductor group 106；The p-type of first group of thermoelectric power generation semiconductor group half
The N-type semiconductor cold end of conductor cold end and second group of thermoelectric power generation semiconductor group pass through cold side metal conductor group 104 first
Conductor connects；The N-type semiconductor hot junction and P-type semiconductor hot junction of second group of thermoelectric power generation semiconductor group pass through hot side metal conductor
Second conductor connection in group 106；The P-type semiconductor cold end of second group of thermoelectric power generation semiconductor group and the 3rd group of thermoelectric power generation
The N-type semiconductor cold end of semiconductor group is connected by second conductor of cold side metal conductor group 104；Circulation connection according to this, by N
Type semiconductor and P-type semiconductor are linked to be cascaded structure；The P-type semiconductor cold end of last group of thermoelectric power generation semiconductor group is by leading
The external underground thermoelectric generation module positive pole 122 of line.
Positive wire 62 is connected in underground with the underground thermoelectric generation module positive pole 122 in underground thermoelectric generation module 31,
Positive wire 62 is connected on ground with ground load 71；Underground of the cathode conductor 61 in underground and underground thermoelectric generation module 31
Thermoelectric generation module negative pole 121 is connected, and cathode conductor 61 is connected on ground with ground load 71.
One N-type semiconductor and a P-type semiconductor form one group of thermoelectric power generation semiconductor group；Some groups of described N-types
Semiconductor and P-type semiconductor can be 1 group, 10 groups, 100 groups or any multigroup.
Described cooling medium is water, liquid carbon dioxide, liquid nitrogen.
The method of additional low-temperature receiver type hot dry rock thermoelectric power generation, using above-mentioned additional low-temperature receiver type hot dry rock thermoelectric heat generation system,
Step is as follows：
Step 1：According to selected hot dry rock well location, hot dry rock superstratum 11 is drilled to hot dry rock reservoir 10 using rig
Top, setting of casing, cementing well；Then small bits are changed and drill hot dry rock reservoir 10 to desired depth, barefoot completion is simultaneously
Cheng Jing；
Step 2：Underground thermoelectric generation module 31, cooling medium are flowed into pipeline 41, cooling medium effuser line 42, positive pole
After wire 62 and cathode conductor 61 assemble on ground in tripping in pit shaft 8, underground thermoelectric generation module 31 is all placed in hot dry rock
In reservoir 10；
Step 3：The part of pit shaft 8 in the range of hot dry rock superstratum 11 is filled into insulating medium；
Step 4：Cooling medium injection device 20, cooling medium storage device 21 and cooling medium ground flowline are installed
43, connect ground load 71.
Step 5：The cooling medium for being stored in cooling medium storage device 21 enters through cooling medium ground flowline 43
After cooling medium injection device 20 is pressurized, pipeline 41 is flowed into by cooling medium and is transported to underground, flows into and divides by cooling medium
Exchanged heat in the thermoelectric generation module underground radiator 102 entered after being shunted with manifold 101 in thermoelectric generation module 31；Through heat
Cooling medium after the heat exchange of electric electricity generation module underground radiator 102 is flowed out after collector tube remittance 100 collects by cooling medium to be flowed into
Cooling medium effuser line 42, then enter cooling medium storage device 21 by the residual compression outflow ground of cooling medium
In；Electric energy caused by underground thermoelectric generation module 31 supplies ground load 71 by positive wire 62 and cathode conductor 61.
Claims (7)
1. a kind of additional low-temperature receiver type hot dry rock thermoelectric heat generation system, including：Cooling medium storage device, the flowing of cooling medium ground
Pipeline, cooling medium injection device, underground thermoelectric generation module, cooling medium flow into pipeline, cooling medium effuser line, negative pole
Wire and positive wire；Characterized in that, described underground thermoelectric generation module is located in pit shaft, underground thermoelectric generation module is complete
Portion is placed in the range of hot dry rock reservoir, and underground thermoelectric generation module directly contacts with exposed hot dry rock reservoir, and exposed is xeothermic
Rock reservoir forms the high temperature hot junction of additional low-temperature receiver type hot dry rock thermoelectric power generation；Cooling medium injection device and cooling medium storage dress
Setting in ground, cooling medium injection device is connected by cooling medium ground flowline with cooling medium storage device；Heat
Electric electricity generation module is provided with cooling medium and flows into distributing manifold, thermoelectric generation module underground radiator, cooling medium outflow collector tube
Converge；The arrival end that cooling medium injection device flows into distributing manifold with the cooling medium in the thermoelectric generation module of underground passes through cooling
Medium inflow line is connected, and the cooling medium in the thermoelectric generation module of underground flows into the port of export of distributing manifold and underground thermoelectricity is sent out
The arrival end of thermoelectric generation module underground radiator in electric module is connected, the thermoelectric generation module in the thermoelectric generation module of underground
The arrival end that the port of export of underground radiator converges with cooling medium outflow collector tube is connected, and what cooling medium outflow collector tube converged goes out
Mouth end is connected by cooling medium effuser line with cooling medium storage device；Cooling medium is pressurized by cooling medium injection device
The arrival end for the cooling medium inflow distributing manifold that pipeline enters in the thermoelectric generation module of underground, warp are flowed into by cooling medium afterwards
The cooling medium that cooling medium in the thermoelectric generation module of underground is flowed into after distributing manifold distribution flows into distribution pipe from cooling medium
The arrival end of the thermoelectric generation module underground radiator entered after remittance port of export outflow in underground heat disaster electricity electricity generation module, flows through thermoelectricity
Exchanged heat inside the radiator of electricity generation module underground and in this place；Cooling medium after heat exchange radiates from thermoelectric generation module underground
The port of export of device flows out into the arrival end that cooling medium outflow collector tube converges, after cooling medium outflow collector tube collects
Heat exchange after cooling medium from cooling medium outflow collector tube converge the port of export outflow, flowed back to by cooling medium effuser line
Cooling medium storage device；Cooling medium storage device, cooling medium ground flowline, cooling medium injection device, cooling
Medium flows into distributing manifold, thermoelectric generation module underground radiator, the remittance of cooling medium outflow collector tube, cooling medium effuser line
The cooling medium flowing circulatory system of closure is formed, forms the low temperature cold end of additional low-temperature receiver type hot dry rock thermoelectric power generation；Described
Underground thermoelectric generation module, positive wire, ground load and cathode conductor are in turn connected to form closed circuit.
2. additional low-temperature receiver type hot dry rock thermoelectric heat generation system according to claim 1, it is characterised in that underground thermoelectric power generation
Module, including：Cooling medium outflow collector tube converges, cooling medium flows into distributing manifold, thermoelectric generation module underground radiator, cold
Hold insulating ceramic film, cold side metal conductor, thermoelectric power generation semiconductor group, hot side metal conductor group, hot junction insulation heated components, well
Lower thermoelectric generation module negative pole, underground thermoelectric generation module positive pole；Hot junction insulation heated components are located at underground thermoelectric generation module
Outer layer, directly contacted with exposed hot dry rock reservoir；The described hot junction insulation cylindrical structure of heated components；Hot side metal
Conductor group is located on the inside of hot junction insulation heated components, is in close contact with hot junction insulation heated components；Thermoelectric power generation semiconductor group position
On the inside of hot side metal conductor group, outside and the hot side metal conductor group of thermoelectric power generation semiconductor group are in close contact；Cold side metal
Conductor group is located on the inside of thermoelectric power generation semiconductor group and is in close contact with the inner side of thermoelectric power generation semiconductor group；Cold end insulation heat release
Component is located on the inside of cold side metal conductor group and is in close contact with cold side metal conductor group；Described cold end insulation discharge hot component is in
Cylinder-like structure；Thermoelectric generation module underground radiator be located on the inside of cold end insulation discharge hot component and with cold end insulation discharge hot component
It is in close contact, heat exchange place is provided for underground thermoelectric generation module；Cooling medium flows into distributing manifold and is located at thermoelectric generation module
On the inside of the radiator of underground, it is connected with thermoelectric generation module underground radiator inlet end, and is flowed into and managed by conduit and cooling medium
Line is connected；Cooling medium outflow collector tube converges to be flowed on the inside of distributing manifold positioned at cooling medium, is dissipated with thermoelectric generation module underground
The hot device port of export is connected, and is connected by cooling medium effuser line with cooling medium storage device.
3. additional low-temperature receiver type hot dry rock thermoelectric heat generation system according to claim 2, it is characterised in that described thermoelectricity hair
Electric semiconductor group is located on the inside of hot side metal conductor group, on the outside of cold side metal conductor group；Described thermoelectric power generation semiconductor group by
Some groups of N-type semiconductors and P-type semiconductor alternating, arrange in pairs；Replaced, in pairs by some groups of N-type semiconductors and P-type semiconductor
One end of the thermoelectric power generation semiconductor group of composition is placed in high temperature hot junction, and the other end is placed in low temperature cold end；It is placed in high temperature hot junction
In N-type semiconductor be N-type semiconductor hot junction, P-type semiconductor be P-type semiconductor hot junction；The N-type being placed in low temperature cold end is partly led
Body is N-type semiconductor cold end, P-type semiconductor is P-type semiconductor cold end；Described hot side metal conductor group is by multiple conductor groups
Into for connecting the N-type semiconductor hot junction and P-type semiconductor hot junction that are placed in the thermoelectric power generation semiconductor group in high temperature hot junction；
Described cold side metal conductor group is made up of multiple conductors, is placed in for connecting in the thermoelectric power generation semiconductor group in low temperature cold end
N-type semiconductor cold end and P-type semiconductor cold end；In described thermoelectric power generation semiconductor group, first group of thermoelectric power generation semiconductor
The N-type semiconductor cold end of group passes through the external underground thermoelectric generation module negative pole of wire；The N-type of first group of thermoelectric power generation semiconductor group
Semiconductor hot junction is connected with P-type semiconductor hot junction by first conductor in hot side metal conductor group；First group of thermoelectric power generation
The N-type semiconductor cold end of the P-type semiconductor cold end of semiconductor group and second group of thermoelectric power generation semiconductor group is led by cold side metal
First conductor connection of body group；The N-type semiconductor hot junction and P-type semiconductor hot junction of second group of thermoelectric power generation semiconductor group pass through
Second conductor connection in hot side metal conductor group；The P-type semiconductor cold end and the 3rd of second group of thermoelectric power generation semiconductor group
The N-type semiconductor cold end of group thermoelectric power generation semiconductor group is connected by second conductor of cold side metal conductor group；Circulate according to this
Connection, is linked to be cascaded structure by N-type semiconductor and P-type semiconductor；The P-type semiconductor of last group of thermoelectric power generation semiconductor group is cold
End passes through the external underground thermoelectric generation module positive pole of wire.
4. additional low-temperature receiver type hot dry rock thermoelectric heat generation system according to claim 3, it is characterised in that positive wire is in well
Lower to be connected with the underground thermoelectric generation module positive pole in the thermoelectric generation module of underground, positive wire is on ground and ground load phase
Even；Cathode conductor is connected in underground with the underground thermoelectric generation module negative pole in the thermoelectric generation module of underground, and cathode conductor is on ground
Face is connected with ground load.
5. additional low-temperature receiver type hot dry rock thermoelectric heat generation system according to claim 4 a, it is characterised in that N-type is partly led
Body and a P-type semiconductor form one group of thermoelectric power generation semiconductor group；Some groups of described N-type semiconductors and P-type semiconductor, can
To be 1 group, 10 groups, 100 groups or any other multigroup.
6. additional low-temperature receiver type hot dry rock thermoelectric heat generation system according to claim 5, it is characterised in that described cooling is situated between
Matter is water, liquid carbon dioxide, liquid nitrogen.
A kind of 7. method of additional low-temperature receiver type hot dry rock thermoelectric power generation, using the additional low-temperature receiver type hot dry rock described in claim 6
Thermoelectric heat generation system, it is characterised in that step is as follows：
Step 1：According to selected hot dry rock well location, drilled using rig at the top of hot dry rock superstratum to hot dry rock reservoir, under
Sleeve pipe, cementing well；Then small bits are changed and drill hot dry rock reservoir to desired depth, barefoot completion and Cheng Jing；
Step 2：Underground thermoelectric generation module, cooling medium are flowed into pipeline, cooling medium effuser line, positive wire and negative pole
After wire assembles on ground in tripping in pit shaft, underground thermoelectric generation module is all placed in hot dry rock reservoir；
Step 3：Pit shaft part in the range of hot dry rock superstratum is filled into insulating medium；
Step 4：Cooling medium injection device, cooling medium storage device and cooling medium ground flowline, connection ground are installed
Face loads；
Step 5：The cooling medium for being stored in cooling medium storage device enters cooling medium through cooling medium ground flowline
After injection device supercharging, pipelined is flowed into underground by cooling medium, after cooling medium flows into distributing manifold shunting
Exchanged heat into the thermoelectric generation module underground radiator in thermoelectric generation module；Through thermoelectric generation module underground radiator
Cooling medium after heat exchange is flowed out after collector tube collects by cooling medium flows into cooling medium effuser line, then by cold
But the residual compression outflow ground of medium enters in cooling medium storage device；Electric energy caused by the thermoelectric generation module of underground passes through
Positive wire and cathode conductor supply ground load.
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| CN107846158A (en) * | 2017-12-06 | 2018-03-27 | 四川大学 | A kind of thermoelectric power generation unit with geothermal power generation |
| CN107947639B (en) * | 2017-12-21 | 2020-05-15 | 四川大学 | Integrated integrated system of in-situ geothermal thermoelectric power generation device |
| CN108322096A (en) * | 2018-02-08 | 2018-07-24 | 西南石油大学 | A kind of underground heat method for generating electricity by utilizing temperature difference and system |
| CN108799024B (en) * | 2018-05-28 | 2020-06-26 | 中国石油大学(华东) | U-shaped pipe heat exchange closed circulation underground thermoelectric power generation system and method |
| CN109883074B (en) * | 2019-03-29 | 2020-07-14 | 中国矿业大学 | System for extracting geothermal energy from goaf filling body and working method thereof |
| CN111237146B (en) * | 2020-01-14 | 2021-08-24 | 西南石油大学 | Geothermal branch well constant temperature difference power generation system |
| CN112532110A (en) * | 2020-11-20 | 2021-03-19 | 中国核动力研究设计院 | Heat source suitable for temperature difference type thermoelectric conversion |
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