CN206419171U - A kind of geothermal exploitation system - Google Patents
A kind of geothermal exploitation system Download PDFInfo
- Publication number
- CN206419171U CN206419171U CN201720035241.9U CN201720035241U CN206419171U CN 206419171 U CN206419171 U CN 206419171U CN 201720035241 U CN201720035241 U CN 201720035241U CN 206419171 U CN206419171 U CN 206419171U
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- pipes
- flow
- collection conduit
- drilling
- tunnel
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- 238000005553 drilling Methods 0.000 claims abstract description 34
- 239000011435 rock Substances 0.000 claims abstract description 28
- 238000010248 power generation Methods 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 210000000003 hoof Anatomy 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 9
- 230000035699 permeability Effects 0.000 abstract description 8
- 238000004891 communication Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 25
- 230000005611 electricity Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005258 radioactive decay Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The utility model discloses a kind of geothermal exploitation system, the flow in pipes and collection conduit set including pit shaft and along shaft in wall, flow in pipes is connected by the drilling in hot dry rock with collection conduit, flow in pipes is connected by the one end open for injecting tunnel with drilling, collection conduit is by collecting tunnel and the other end open communication of drilling, and flow in pipes and collection conduit are with setting power generation operation platform to be on the ground connected so as to form closed circulation.The geothermal exploitation system that the utility model is provided, being capable of a large amount of mining geothermal energy, it is ensured that the porosity and permeability of hot dry rock, increases heat exchange area, while can also use heat conducting pipe fully absorb the heat of hot dry rock, it is to avoid pipeline blockage.Reduce drilling hole number and ground surface platform area occupied simultaneously.
Description
Technical field
The utility model belongs to geothermal exploitation technical field, and in particular to a kind of geothermal exploitation system.
Background technology
As world energy sources supply and demand day is becoming tight, and traditional energy is the problem of be faced with short and high carbon emission, institute
Turn into the focus of research and development to develop new energy, wherein to the research and development of 3000-10000 meters of deep earth heart energy resources increasingly by
To the concern of people, but limited to by drilling technology, the utilization rate of geothermal energy resources is not high.Underground heat is essentially from ground
Radioactive decay heat production inside ball, thermal source has the sustainability of 100000000 years yardsticks, and deep geothermal exploitation is to solve human future energy
The fundamental solution of source problem.
Current environmental pollution and energy shortage can be solved the problems, such as using geothermal energy, current mining geothermal energy is using enhancing
Type geothermal system EGS (Enhanced Geothermal System), due to using drilling technology, boring aperture is small, waterpower pressure
Split difficulty, i.e., rock mass temperature enough, and rock mass is without enough permeability and fluidity, causes to produce enough
Heat energy generates electricity, and enhanced geothermal system EGS (Enhanced Geothermal System) is exactly to improve rock by manually
The permeability of body, increases output heat energy, improves generated energy.This method is compared with the current energy, and development cost is high, uneconomical, and
And the permeability and fluidity of rock mass can gradually be reduced, pipeline liquid body impurity effect is also easy to be blocked, thus also not by
Widely use.
China's earth's surface and superficial part mineral resources have been observed that and utilize mostly, and a large amount of deep resources do not possess the economic exploitation again
Condition, many mining companies face the serious stern form of scarcity of resources, how to walk out current predicament with can sustainable development into
For each mining industry top priority.
Utility model content
The purpose of this utility model is solved the above problems there is provided a kind of geothermal exploitation system based on deep vertical, not only
The problems such as can solve the problem that the scarcity of resources and bankruptcy that old mine faces, it is also possible to prevent some from the depth that meets exploitation economic indicator
Portion's resource, can combine deep geothermal exploitation and possess extraction value.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of geothermal exploitation system, including pit shaft with
And the flow in pipes and collection conduit set along shaft in wall, flow in pipes is connected by the drilling in hot dry rock with collection conduit
Logical, flow in pipes and collection conduit are with setting power generation operation platform to be on the ground connected so as to form closed circulation.
Preferably, the flow in pipes is connected by the one end open for injecting tunnel with drilling, and collection conduit is by collecting
Tunnel and the other end open communication of drilling.
Preferably, the flow in pipes and injection tunnel connecting place are inlet, and collection conduit is with collecting tunnel connecting place
For collection port, inlet and collection port are located at same level.
Preferably, the injection tunnel and the section configuration for collecting tunnel are rectangle, the trapezoidal, shape of a hoof, Semicircular arched, circle
One kind in shape or ellipse.
Preferably, heat conducting pipe is equipped with the drilling, one end of heat conducting pipe is connected with flow in pipes, heat conducting pipe it is another
End is connected with collection conduit.
Preferably, the heat conducting pipe is made up of corrosion-resistant and good heat conductivity material.
Preferably, a diameter of 3~10m of the pit shaft, injection tunnel and the width and height of collecting tunnel be 1~
7m, a diameter of 10~300mm of drilling, the array pitch of heat conducting pipe is 0.2~1.5m.
Preferably, the flow in pipes and collection conduit are made up of high temperature resistant, high pressure and heat-insulated material.
Preferably, the power generation operation platform includes pumping system.
The beneficial effects of the utility model are：
1st, geothermal exploitation system provided by the utility model, by build deep vertical or on the original pit shaft in mine after
Continue and set pit shaft, excavate the excavation for arriving behind purpose stratum and carrying out entry, so as to improve the flow and its liquid and heat of liquid
The contact area in source, and hot dry rock is turned on and ruptured by measures such as drilling, explosions, improve its permeability and fluid
Property, or heat conducting pipe is laid in hot dry rock, recycle collection conduit to collect the liquid media for carrying heat energy, conveyed by pit shaft
Generated electricity to power generation operation platform.
2nd, relative to traditional enhanced geothermal system EGS is using two small-bore wells and makes intermediate liquid in target dry
Hot rock stratum lateral flow absorbs heat, and the utility model is carried out the collection of geothermal energy using a bite major diameter pit shaft, can caused
Intermediate liquid reduces drilling hole number in the xeothermic rock stratum longitudinal flow of target and lateral flow, the method for the mining geothermal energy
With ground surface platform area occupied.
3rd, the xeothermic rock stratum of method increase target of hydraulic fracturing is relied primarily on relative to traditional enhanced geothermal system EGS
Porosity and permeability, but it cannot be guaranteed that the porosity and permeability of hot dry rock, and pipeline is easy in the process of running
Block, the utility model can be prevented effectively from disadvantages mentioned above, while artificial measures can also be given full play to, it is ensured that the hole of hot dry rock
Porosity and permeability, increase heat exchange area, while can also fully absorb the heat of hot dry rock using heat conducting pipe, it is to avoid pipeline is blocked up
Plug.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model geothermal exploitation system.
Fig. 2 is the scheme of installation of the utility model heat conducting pipe.
Fig. 3 is the utility model injection tunnel and the sectional drawing for collecting tunnel.
Description of reference numerals：1st, pit shaft；2nd, flow in pipes；3rd, collection conduit；4th, inlet；5th, collection port；6th, lane is injected
Road；7th, tunnel is collected；8th, drill；9th, heat conducting pipe；10th, hot dry rock.
Embodiment
The utility model is described further with specific embodiment below in conjunction with the accompanying drawings：
Implement one
As shown in figure 1, a kind of geothermal exploitation system that the present embodiment is provided, including pit shaft 1, pit shaft can pass through Construction of Silo
Technology building, or blind shaft is built again using existing pit shaft in mining.A diameter of 3~10m of pit shaft 1, its vertical depth is
3000-10000m.Flow in pipes 2 and collection conduit 3 are set along the inwall of pit shaft 1, and flow in pipes 2 and collection conduit 3 are by resistance to height
Temperature, high pressure and heat-insulated material are made.
Flow in pipes 2 is connected by the drilling 8 in hot dry rock with collection conduit 3, and drilling 8 passes through drilling, liquid or steaming
The mode of gas medium fracturing combination explosion is built into, a diameter of 10~300mm of drilling 8.Flow in pipes 2 and collection conduit 3 are equal
It is connected to form closed circulation with power generation operation platform.Power generation operation platform is rest on the ground or some is big shaft station etc.
Space, including pumping system.
In order to increase liquid contact surface, being built between flow in pipes 2 and drilling 8 has injection tunnel 6, the He of collection conduit 3
Being built between drilling 8 has collection tunnel 7.It is horizontally disposed to inject tunnel 6 and collect tunnel 7, and both width and height are equal
For 1~7m, as shown in figure 3, injection tunnel 6 with collect the section configuration in tunnel 7 for rectangle, the trapezoidal, shape of a hoof, Semicircular arched,
One kind in circular or ellipse.
Flow in pipes 2 is inlet 4 with injecting the connecting place of tunnel 6, and collection conduit 3 is collection with collecting the connecting place of tunnel 7
Mouthfuls 5, inlet 4 and collection port 5 are located at same level, and the position of inlet and collection port can be according to the heat energy distribution of target zone
And arrange.
The process of construction of above-mentioned geothermal exploitation system is：Pit shaft is built by Construction Technique of Shaft, reached after target zone, profit
With lane construction technology, along target zone, laterally tunnel and collection conduit are injected in developing.Pass through drilling, liquid or steam medium fracturing
With reference to the mode of explosion, by target zone pressure break.Flow in pipes and collection conduit are laid along shaft in wall, flow in pipes connection generates electricity
The injection tunnel of workbench and target zone, collection conduit connection power generation operation platform and collection conduit.
The course of work of above-mentioned geothermal exploitation system is：By intermediate liquid, such as water, it is injected into from power generation operation platform
Enter in pipeline, liquid reaches inlet by flow in pipes under pressure, enters purpose stratum from inlet, into injection
Tunnel, wherein liquid will fill injection tunnel, and liquid is then under pressure by the drilling in hot dry rock, and liquid passes through dry
Drilling in hot rock absorbs geothermal energy, and reaches collection tunnel, and liquid fills collection tunnel, enters collecting pipe by collection port
Road, liquid or steam containing geothermal energy are carried to power generation operation platform and generated electricity.So circulation, the underground heat on purpose stratum
Ground can be constantly taken to be generated electricity.
In order to prevent drilling 8 from blocking in use, it can be equipped with drilling 8 by high intensity, corrosion-resistant and heat conduction
Heat conducting pipe 9 is made in the good material of performance, as shown in Fig. 2 be intervally arranged in hot dry rock 10 some heat conducting pipes 9, the array pitch of heat conducting pipe 9
For 0.2~1.5m.One end of every heat conducting pipe 9 is connected with flow in pipes 2, and the other end is connected with collection conduit 3, so that heat conducting pipe
The heat energy of hot dry rock 10 can be fully absorbed, and is taken out of heat energy by the liquid media in collection conduit 3.
The geothermal exploitation system of the present embodiment, utilizes the pit shaft and tunnel and its underground space of the formation of mine excavation technology
Greatly, the wide advantage of liquid contact surface, arrangement flow in pipes and collection conduit, connection ground and destination layer, constitute one and completely return
Road, and drilling and blasting rock-broken technology are combined, by destination layer pressure break, using drilling technique, heat conducting pipe is led in laying in drilling, most
Afterwards so that liquid media obtains the heat of hot dry rock by destination layer, then by collection conduit by the liquid containing geothermal energy or steaming
Gas is carried to ground and generated electricity.The geothermal exploitation system being capable of a large amount of mining geothermal energy, it is to avoid the crowd in existing recovery method
Many shortcomings, while existing mine can also be used or progress underground heat exploitation is combined with deep mining, can reduce engineering cost, reduce
Unnecessary repeated construction, can also enable because the mineral deposit that buried depth does not have the economic exploitation to be worth is exploited.This method can also be
Implement in the old mine of various scarcity of resources so that old mine carries out secondary production, depart from the predicament of scarcity of resources.The underground heat is opened
Hair system can also be applied to oil, the exploitation in shale gas equal energy source field.
Embodiment two
As shown in Fig. 2 a kind of geothermal exploitation system in the present embodiment, including pit shaft 1, pit shaft can pass through Construction of Silo skill
Art is built, or builds blind shaft again using existing pit shaft in mining.A diameter of 3~10m of pit shaft 1, its vertical depth is 3000-
10000m.Flow in pipes 2 and collection conduit 3 are set along the inwall of pit shaft 1, and flow in pipes 2 and collection conduit 3 are by high temperature resistant, height
Pressure and heat-insulated material are made.
Offer to be equipped with drilling, drilling in hot dry rock and be made up of high intensity, corrosion-resistant and good heat conductivity material
Heat conducting pipe 9, as shown in Fig. 2 some heat conducting pipes 9 that are intervally arranged in hot dry rock 10, the array pitch of heat conducting pipe 9 is 0.2~1.5m.Every
One end of heat conducting pipe 9 is connected with flow in pipes 2, and the other end is connected with collection conduit 3, flow in pipes 2 and collection conduit 3 with hair
Electric workbench is connected to form closed circulation.Power generation operation platform is rest on the ground or some big sky such as shaft station
Between, including pumping system, so that heat conducting pipe can fully absorb the heat energy of hot dry rock 10, and pass through the liquid matchmaker in collection conduit 3
Jie, which carries heat energy to power generation operation platform, to be generated electricity.
The course of work of the geothermal exploitation system is：By intermediate liquid, such as water, injection is injected into from power generation operation platform
In pipeline, liquid reaches heat conducting pipe by flow in pipes under pressure, and liquid still passes through hot dry rock under pressure
Middle heat conducting pipe absorbs geothermal energy, and reaches collection conduit, is delivered to the liquid or steam that carry geothermal energy by collection conduit
Power generation operation platform on ground generates electricity.So circulation, the geothermal energy on purpose stratum is constantly taken to ground and generated electricity.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this reality
With new principle, it should be understood that protection domain of the present utility model is not limited to such especially statement and embodiment.
One of ordinary skill in the art can these technical inspirations according to disclosed in the utility model make and various do not depart from this practicality
New substantive other various specific deformations and combination, these deformations and combination are still in protection domain of the present utility model.
Claims (9)
1. a kind of geothermal exploitation system, it is characterised in that：The flow in pipes set including pit shaft (1) and along pit shaft (1) inwall
(2) and collection conduit (3), flow in pipes (2) is connected by the drilling (8) in hot dry rock with collection conduit (3), flow in pipes
(2) it is connected with power generation operation platform of the collection conduit (3) with setting on the ground so as to form closed circulation.
2. geothermal exploitation system according to claim 1, it is characterised in that：The flow in pipes (2) is by injecting tunnel
(6) one end open with drilling (8) is connected, and collection conduit (3) is connected by collecting tunnel (7) and another end opening of drilling (8)
It is logical.
3. geothermal exploitation system according to claim 2, it is characterised in that：The flow in pipes (2) and injection tunnel (6)
Connecting place is inlet (4), and collection conduit (3) is collection port (5), inlet (4) and collection port with collecting tunnel (7) connecting place
(5) it is located at same level.
4. geothermal exploitation system according to claim 2, it is characterised in that：The injection tunnel (6) is with collecting tunnel (7)
Section configuration be rectangle, the trapezoidal, shape of a hoof, Semicircular arched, circle or ellipse in one kind.
5. geothermal exploitation system according to claim 1 or 2, it is characterised in that：Heat conducting pipe is equipped with the drilling (8)
(9), one end of heat conducting pipe (9) is connected with flow in pipes (2), and the other end of heat conducting pipe (9) is connected with collection conduit (3).
6. geothermal exploitation system according to claim 5, it is characterised in that：The heat conducting pipe (9) is by corrosion-resistant and heat conduction
The good material of performance is made.
7. geothermal exploitation system according to claim 5, it is characterised in that：A diameter of 3~10m of the pit shaft (1), note
It is 1~7m to enter tunnel (6) and collect the width of tunnel (7) and height, a diameter of 10~300mm of drilling (8), heat conducting pipe
(9) array pitch is 0.2~1.5m.
8. geothermal exploitation system according to claim 1, it is characterised in that：The flow in pipes (2) and collection conduit (3)
It is made up of high temperature resistant, high pressure and heat-insulated material.
9. geothermal exploitation system according to claim 1, it is characterised in that：The power generation operation platform includes pumping system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035241.9U CN206419171U (en) | 2017-01-12 | 2017-01-12 | A kind of geothermal exploitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720035241.9U CN206419171U (en) | 2017-01-12 | 2017-01-12 | A kind of geothermal exploitation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206419171U true CN206419171U (en) | 2017-08-18 |
Family
ID=59571127
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|---|---|---|---|
| CN201720035241.9U Active CN206419171U (en) | 2017-01-12 | 2017-01-12 | A kind of geothermal exploitation system |
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| Country | Link |
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| CN (1) | CN206419171U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704123A (en) * | 2017-01-12 | 2017-05-24 | 大连理工大学 | Geothermal exploitation system and construction method thereof |
| CN107461951A (en) * | 2017-08-15 | 2017-12-12 | 平安煤炭开采工程技术研究院有限责任公司 | A kind of deep earth heart energy development approach |
| CN108222831A (en) * | 2018-01-03 | 2018-06-29 | 西南石油大学 | Multidirectional geothermal well and high-efficiency mining hot dry rock method |
| CN108613424A (en) * | 2018-05-31 | 2018-10-02 | 浙江陆特能源科技股份有限公司 | Enhance closed mid-deep strata imbedded pipe heat-exchanging system |
| CN108869208A (en) * | 2018-06-22 | 2018-11-23 | 中国地质大学（北京） | Tunnel type geothermal power generation and comprehensive development and utilization system |
| CN113107451A (en) * | 2020-01-13 | 2021-07-13 | 中国石油化工股份有限公司 | Method for maintaining long-term flow conductivity of hot dry rock fracturing fracture |
| CN113279728A (en) * | 2021-06-04 | 2021-08-20 | 中国地质科学院勘探技术研究所 | Medium-deep geothermal energy closed heat exchange structure and process method thereof |
-
2017
- 2017-01-12 CN CN201720035241.9U patent/CN206419171U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704123A (en) * | 2017-01-12 | 2017-05-24 | 大连理工大学 | Geothermal exploitation system and construction method thereof |
| CN107461951A (en) * | 2017-08-15 | 2017-12-12 | 平安煤炭开采工程技术研究院有限责任公司 | A kind of deep earth heart energy development approach |
| CN108222831A (en) * | 2018-01-03 | 2018-06-29 | 西南石油大学 | Multidirectional geothermal well and high-efficiency mining hot dry rock method |
| CN108613424A (en) * | 2018-05-31 | 2018-10-02 | 浙江陆特能源科技股份有限公司 | Enhance closed mid-deep strata imbedded pipe heat-exchanging system |
| CN108869208A (en) * | 2018-06-22 | 2018-11-23 | 中国地质大学（北京） | Tunnel type geothermal power generation and comprehensive development and utilization system |
| CN113107451A (en) * | 2020-01-13 | 2021-07-13 | 中国石油化工股份有限公司 | Method for maintaining long-term flow conductivity of hot dry rock fracturing fracture |
| CN113107451B (en) * | 2020-01-13 | 2023-02-28 | 中国石油化工股份有限公司 | Method for maintaining long-term flow conductivity of hot dry rock fracturing fracture |
| CN113279728A (en) * | 2021-06-04 | 2021-08-20 | 中国地质科学院勘探技术研究所 | Medium-deep geothermal energy closed heat exchange structure and process method thereof |
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Effective date of registration: 20191204 Address after: 116000 No. 2 Ling Road, Ganjingzi District, Liaoning, Dalian Co-patentee after: Shenzhen Technology (Dalian) Co., Ltd. Patentee after: Dalian University of Technology Address before: 116023 No. 2 Ling Road, Ganjingzi District, Liaoning, Dalian Co-patentee before: LiSoft Technology (Dalian) Co., Ltd. Patentee before: Dalian University of Technology |