CN206478884U - Deep geothermal heat and hot dry rock combination heat-exchange system - Google Patents
Deep geothermal heat and hot dry rock combination heat-exchange system Download PDFInfo
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- CN206478884U CN206478884U CN201720087135.5U CN201720087135U CN206478884U CN 206478884 U CN206478884 U CN 206478884U CN 201720087135 U CN201720087135 U CN 201720087135U CN 206478884 U CN206478884 U CN 206478884U
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- heat
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- geothermal well
- geothermal
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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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Abstract
The utility model is related to a kind of deep geothermal heat and hot dry rock combination heat-exchange system, including ground heat-exchange system and underground heat exchange system, ground heat-exchange system includes mixed flow heat-exchange unit and user's heating equipment, mixed flow heat-exchange unit brings out water pipe by user with user's heating equipment and connected with user terminal return pipe, underground heat exchange system includes the geothermal well water outlet pipeline section being sequentially communicated, the horizontal pipeline section of geothermal well and geothermal well backwater pipeline section, geothermal well water outlet pipeline section and geothermal well backwater pipeline section are in the part in the hot dry rock of underground, and the outer surface of the horizontal pipeline section of geothermal well is provided with heat conduction oxidant layer；Geothermal well water outlet pipeline section and geothermal well backwater pipeline section are connected by pipeline with mixed flow heat-exchange unit；The heat conduction oxidant layer that the utility model is set, it is possible to increase take heat energy power, makes full use of underground heat energy, then completes secondary heat exchange by heat-exchange unit, saves the energy, convenient and practical.
Description
Technical field
The utility model belongs to geothermal heating system, and in particular to a kind of deep geothermal heat and hot dry rock combine heat-exchange system.
Background technology
The relevant new energy report display of the United Nations：Global geothermal energy resources total resources, equivalent to global resources total flow
450,000 times.The decay of radioactive element is the main source of earth heat energy.The earth of motion constantly stores up and discharged energy
Amount.It is annual to be scattered and disappeared by heat transfer, volcanic eruption, earthquake, the substantial amounts of energy of release such as hot spring.Continental crust general thickness is 30
~ 70 kilometers, geothermic gradient gradually increases from the top down, general every lower 100m, and temperature raises 3 DEG C, geothermal energy type underground heat buried depth to ground
Under thousands of rice, inside in the absence of fluid or only a small amount of underground fluid high heat rock mass.Because substantial amounts of geothermal energy type underground heat is obtained
Less than effective utilization, a large amount of losses and waste of the energy are caused.
Current prior art is the singel well system using geothermal energy, and the system includes production casing and positioned at production casing
In production pipe；Inside-and-outside ring space is formed between production casing and production pipe.The system is operated using individual well, with high temperature
Layer contact surface is small, and the temperature after heating does not often reach requirement, haves the shortcomings that geothermal energy utilization rate is low.
Utility model content
Small with high-temperature stratum contact surface in order to solve the operation of individual well present in prior art, the temperature after heating often reaches
Less than requiring, the low technical problem of geothermal energy utilization rate, the utility model provides following technical scheme：
Deep geothermal heat and hot dry rock combination heat-exchange system, including ground heat-exchange system and underground heat exchange system, the ground
Heat-exchange system includes mixed flow heat-exchange unit and user's heating equipment, and the mixed flow heat-exchange unit and user's heating equipment pass through user
Water pipe is brought out to connect with user terminal return pipe, wherein：
Geothermal well water outlet pipeline section, the horizontal pipeline section of geothermal well and the geothermal well that the underground heat exchange system includes being sequentially communicated are returned
Water pipe section, geothermal well water outlet pipeline section and geothermal well the backwater pipeline section is in part and the underground heat in the hot dry rock of underground
The outer surface of well water flat tube section is provided with heat conduction oxidant layer；
Geothermal well water outlet pipeline section and geothermal well the backwater pipeline section is in part and the underground heat in the hot dry rock of underground
Heat conduction cement sleeve pipe is provided between well water flat tube section and the heat conduction oxidant layer；
The geothermal well water outlet pipeline section and the geothermal well backwater pipeline section are connected by pipeline and the mixed flow heat-exchange unit
It is logical.
Further illustrated as of the present utility model, the heat conduction oxidant layer is between the heat conduction cement sleeve pipe and hot dry rock
Gap in the thermal conducting agent that injects and the thermal conducting agent composition injected in hot dry rock Rockmass fractures.
Further illustrated as of the present utility model, geothermal well water outlet pipeline section and geothermal well the backwater pipeline section is in underground
Partial outer face more than hot dry rock is provided with insulating cement sleeve pipe.
Further illustrated as of the present utility model, user terminal circulating pump is provided with the user terminal return pipe.
Further illustrated as of the present utility model, the geothermal well backwater pipeline section is connected with the mixed flow heat-exchange unit
Geothermal well circulating pump is provided with pipeline.
Further illustrated as of the present utility model, the geothermal well water outlet pipeline section and geothermal well backwater pipeline section are mixed with described
Geothermal well pressure gauge is provided with the pipeline of stream heat-exchange unit connection.
Compared with prior art, what the utility model was obtained has the beneficial effect that：
1st, the utility model forms U-shaped by geothermal well water outlet pipeline section, the horizontal pipeline section of geothermal well and geothermal well backwater pipeline section
Well, with mixed flow heat-exchange unit formation underground heat exchange system, makes fluid fully be contacted with xeothermic rock stratum, obtains heat, and pass through
Pressure break rock mass technology, the filling heat-conductive agent into hot dry rock forms heat conduction oxidant layer, and raising takes heat energy power.
2nd, different sections are set on underground piping heat conduction cement sleeve pipe and insulating cement sleeve pipe, not only play well cementation
Effect, also further improves the acquisition of heat and the heat insulation effect in course of conveying, improves the utilization rate of geothermal energy.
The utility model is described in further details below with reference to drawings and Examples.
Brief description of the drawings
Fig. 1 is deep geothermal heat of the present utility model and hot dry rock combination heat-exchange system structural representation.
In figure：1st, geothermal well water outlet pipeline section；2nd, the horizontal pipeline section of geothermal well；3rd, geothermal well backwater pipeline section；4th, underground heat well pressure
Table；5th, heat exchange station；6th, mixed flow heat-exchange unit；7th, geothermal well circulating pump；8th, user terminal circulating pump；9th, user terminal return pipe；10th, use
Family brings out water pipe；11st, heat conduction oxidant layer；12nd, insulating cement sleeve pipe；13rd, heat conduction cement sleeve pipe.
Embodiment
Reach the skill that predetermined purpose is taken, art means and effect for the utility model is expanded on further, below in conjunction with attached
Figure and embodiment are described in detail as follows to embodiment of the present utility model, architectural feature and its effect.
As shown in figure 1, deep geothermal heat and hot dry rock combination heat-exchange system structural representation, including ground heat-exchange system and ground
Lower heat-exchange system, ground heat-exchange system includes mixed flow heat-exchange unit 6 and user's heating equipment, and mixed flow heat-exchange unit 6 and user supply
Heating equipment brings out water pipe 10 by user and connected with user terminal return pipe 9, and underground heat exchange system includes the geothermal well being sequentially communicated
At the horizontal pipeline section 2 of water outlet pipeline section 1, geothermal well and geothermal well backwater pipeline section 3, geothermal well water outlet pipeline section 1 and geothermal well backwater pipeline section 3
The outer surface of part in the hot dry rock of underground and the horizontal pipeline section 2 of geothermal well is provided with heat conduction oxidant layer 11；Geothermal well outlet pipe
Section 1 and geothermal well backwater pipeline section 3 are between the part in the hot dry rock of underground and the horizontal pipeline section 2 of geothermal well and heat conduction oxidant layer
It is provided with heat conduction cement sleeve pipe 13；Geothermal well water outlet pipeline section 1 and geothermal well backwater pipeline section 3 pass through pipeline and mixed flow heat-exchange unit
6 connections, the system completes once to exchange heat by underground heat exchange system, then completes secondary by ground heat-exchange system, i.e. heat exchange station 5
Heat exchange, can effectively utilize geothermal energy, reach the purpose for saving the energy.
Preferably, the thermal conducting agent that is injected in gap of the heat conduction oxidant layer 11 between heat conduction cement sleeve pipe and hot dry rock and xeothermic
The thermal conducting agent composition injected in rock Rockmass fractures,, can shadow due to there is gap between heat conduction cement sleeve pipe and hot dry rock in construction
Sound takes thermal effect, thus the filling heat-conductive agent in gap, then thermal conducting agent will be also injected into xeothermic cleft, further improve and take heat
Ability, xeothermic cleft can also make hot dry rock crack growth, and inject a large amount of heat conduction by fracturing technology come pressure break rock mass
Agent, can so make to take heat energy power to maximize, make full use of geothermal energy.
Preferably, geothermal well water outlet pipeline section 1 and geothermal well backwater pipeline section 3 are not on the part appearance in the hot dry rock of underground
Face is provided with insulating cement sleeve pipe 12.
Preferably, user terminal circulating pump 8 is provided with user terminal return pipe 9, geothermal well backwater pipeline section 3 is changed with the mixed flow
Geothermal well circulating pump 7 is provided with the pipeline that heat engine group 6 is connected；Geothermal well water outlet pipeline section 1 and geothermal well backwater pipeline section 3 with it is described
Geothermal well pressure gauge 4 is provided with the pipeline that mixed flow heat-exchange unit 6 is connected.
Operationally, geothermal well backwater pipeline section 3 is entered by geothermal well circulating pump 7, then taken by the horizontal pipeline section 2 of geothermal well
Heat, the pipeline section in underground heat exchange system in hot dry rock is provided with heat conduction oxidant layer 11, it is possible to increase take the thermal efficiency, fully using ground
Heat energy, takes the high-temperature water after heat to enter mixed flow heat-exchange unit 6 by geothermal well water outlet pipeline section 1, so as to complete once to exchange heat, dry
Heat conduction cement sleeve pipe 13 is provided between pipeline section and heat conduction oxidant layer 11 within hot rock, the pipeline section beyond hot dry rock is provided with guarantor
Warm cement sleeve pipe 12, the heat conduction cement sleeve pipe 13 and insulating cement sleeve pipe 12 not only play a part of well cementation, also improve and take heat
Efficiency and the heat insulation effect in course of conveying.
Used water at low temperature flows into mixed flow heat-exchange unit 6, user by user terminal circulating pump 8 in user terminal return pipe 9
The high-temperature water after heat is taken to be mixed in mixed flow heat-exchange unit 6 after heat in water at low temperature and geothermal well water outlet pipeline section 1 in the return pipe 9 of end,
Secondary heat exchange is completed, the hot water part after heat exchange is brought out into water pipe 10 by user is delivered to user equipment, and a part passes through
Geothermal well circulating pump 7, which is delivered in underground heat exchange system, to be proceeded once to exchange heat.
Heat-exchange system of the present utility model, underground heat energy is fully extracted by once exchanging heat, through secondary heat exchange by water at low temperature
It is delivered to respectively in user equipment heating and underground heat exchange system with the hot water after high-temperature water mixed heat transfer and extracts heat energy again, and
Recyclable heat-exchange system is formed, geothermal energy, and high insulating effect is not only taken full advantage of, efficiently saves the energy.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to protection domain of the present utility model.
Claims (6)
1. deep geothermal heat and hot dry rock combination heat-exchange system, including ground heat-exchange system and underground heat exchange system, the ground is changed
Hot systems include mixed flow heat-exchange unit（6）With user's heating equipment, the mixed flow heat-exchange unit（6）Pass through with user's heating equipment
User terminal outlet pipe（10）With user terminal return pipe（9）Connection, it is characterised in that：
The underground heat exchange system includes the geothermal well water outlet pipeline section being sequentially communicated（1）, the horizontal pipeline section of geothermal well（2）And geothermal well
Backwater pipeline section（3）, the geothermal well water outlet pipeline section（1）With geothermal well backwater pipeline section（3）Part in the hot dry rock of underground, with
And the horizontal pipeline section of geothermal well（2）Outer surface be provided with heat conduction oxidant layer（11）；
The geothermal well water outlet pipeline section（1）With geothermal well backwater pipeline section（3）Part in the hot dry rock of underground and described
The horizontal pipeline section of hot well（2）Heat conduction cement sleeve pipe is provided between the heat conduction oxidant layer（13）；
The geothermal well water outlet pipeline section（1）With the geothermal well backwater pipeline section（3）Pass through pipeline and the mixed flow heat-exchange unit
（6）Connection.
2. deep geothermal heat according to claim 1 and hot dry rock combination heat-exchange system, it is characterised in that：The heat conduction oxidant layer
（11）Injected in the thermal conducting agent and hot dry rock Rockmass fractures that are injected in gap between the heat conduction cement sleeve pipe and hot dry rock
Thermal conducting agent composition.
3. deep geothermal heat according to claim 1 and hot dry rock combination heat-exchange system, it is characterised in that：The geothermal well goes out
Water pipe section（1）With geothermal well backwater pipeline section（3）Partial outer face more than the hot dry rock of underground is provided with insulating cement sleeve pipe
（12）.
4. deep geothermal heat and hot dry rock combination heat-exchange system according to claim any one of 1-3, it is characterised in that：It is described
User terminal return pipe（9）On be provided with user terminal circulating pump（8）.
5. deep geothermal heat and hot dry rock combination heat-exchange system according to claim any one of 1-3, it is characterised in that：It is described
Geothermal well backwater pipeline section（3）With the mixed flow heat-exchange unit（6）Geothermal well circulating pump is provided with the pipeline of connection（7）.
6. deep geothermal heat and hot dry rock combination heat-exchange system according to claim any one of 1-3, it is characterised in that：It is described
Geothermal well water outlet pipeline section（1）With geothermal well backwater pipeline section（3）With the mixed flow heat-exchange unit（6）It is provided with the pipeline of connection
Geothermal well pressure gauge（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720087135.5U CN206478884U (en) | 2017-01-23 | 2017-01-23 | Deep geothermal heat and hot dry rock combination heat-exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720087135.5U CN206478884U (en) | 2017-01-23 | 2017-01-23 | Deep geothermal heat and hot dry rock combination heat-exchange system |
Publications (1)
| Publication Number | Publication Date |
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| CN206478884U true CN206478884U (en) | 2017-09-08 |
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| CN201720087135.5U Expired - Fee Related CN206478884U (en) | 2017-01-23 | 2017-01-23 | Deep geothermal heat and hot dry rock combination heat-exchange system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642914A (en) * | 2017-11-02 | 2018-01-30 | 北京泰利新能源科技发展有限公司 | Thermal cycle utilizes system |
| CN108266175A (en) * | 2018-03-28 | 2018-07-10 | 陕西延长石油(集团)有限责任公司研究院 | A kind of residential quarters mid-deep strata geothermal energy resources utilize well-pattern system and its application 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 |
| CN109945533A (en) * | 2019-01-18 | 2019-06-28 | 潜能恒信能源技术股份有限公司 | Depth combination geothermal field comprehensive exploitation system |
| CN111351244A (en) * | 2020-02-26 | 2020-06-30 | 中国科学院广州能源研究所 | Twin-well closed enhanced geothermal system |
| CN111365753A (en) * | 2020-02-26 | 2020-07-03 | 中国科学院广州能源研究所 | Solar energy coupling enhancement mode deep well heat exchanger heating system |
| CN111365752A (en) * | 2020-02-26 | 2020-07-03 | 中国科学院广州能源研究所 | Solar energy combined double-well closed type enhanced geothermal heating system |
| CN111365871A (en) * | 2020-02-26 | 2020-07-03 | 中国科学院广州能源研究所 | Enhanced deep well heat exchanger |
| CN111609575A (en) * | 2020-06-18 | 2020-09-01 | 青海省第二地质勘查院 | Hot dry rock heat transfer device that can local secondary heat transfer |
| CN112303942A (en) * | 2020-09-23 | 2021-02-02 | 中国地质科学院勘探技术研究所 | Hot dry rock non-fracturing butt well heat taking device |
| CN113531930A (en) * | 2021-08-02 | 2021-10-22 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Underground heat exchange device for exchanging heat by using mine pit water |
| CN114659284A (en) * | 2022-03-31 | 2022-06-24 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Multistage circulating heat-taking device and method for high-temperature rock mass |
| CN115854572A (en) * | 2022-11-25 | 2023-03-28 | 河南豫中地质勘查工程有限公司 | Underground enhanced heat exchange system for U-shaped geothermal well and optimization method |
| NL2038307A (en) | 2023-10-16 | 2024-08-29 | Univ Tianjin | A high-efficient heat extraction system for a single well open-loop forced circulation in hot dry rock |
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2017
- 2017-01-23 CN CN201720087135.5U patent/CN206478884U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642914A (en) * | 2017-11-02 | 2018-01-30 | 北京泰利新能源科技发展有限公司 | Thermal cycle utilizes system |
| CN107642914B (en) * | 2017-11-02 | 2023-11-21 | 北京泰利新能源科技发展有限公司 | Geothermal recycling system |
| CN108266175A (en) * | 2018-03-28 | 2018-07-10 | 陕西延长石油(集团)有限责任公司研究院 | A kind of residential quarters mid-deep strata geothermal energy resources utilize well-pattern system and its application method |
| CN108266175B (en) * | 2018-03-28 | 2024-05-14 | 陕西延长石油(集团)有限责任公司研究院 | Deep geothermal resource utilization well pattern system in residential district and use method thereof |
| 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 |
| CN108613424B (en) * | 2018-05-31 | 2024-09-27 | 浙江陆特能源科技股份有限公司 | Enhanced closed medium-deep buried pipe heat exchange system |
| CN109945533A (en) * | 2019-01-18 | 2019-06-28 | 潜能恒信能源技术股份有限公司 | Depth combination geothermal field comprehensive exploitation system |
| CN111351244B (en) * | 2020-02-26 | 2021-08-03 | 中国科学院广州能源研究所 | Twin-well closed enhanced geothermal system |
| CN111365752B (en) * | 2020-02-26 | 2022-01-04 | 中国科学院广州能源研究所 | Solar energy combined double-well closed type enhanced geothermal heating system |
| CN111351244A (en) * | 2020-02-26 | 2020-06-30 | 中国科学院广州能源研究所 | Twin-well closed enhanced geothermal system |
| CN111365871A (en) * | 2020-02-26 | 2020-07-03 | 中国科学院广州能源研究所 | Enhanced deep well heat exchanger |
| CN111365753B (en) * | 2020-02-26 | 2021-08-17 | 中国科学院广州能源研究所 | Solar energy coupling enhancement mode deep well heat exchanger heating system |
| CN111365753A (en) * | 2020-02-26 | 2020-07-03 | 中国科学院广州能源研究所 | Solar energy coupling enhancement mode deep well heat exchanger heating system |
| CN111365752A (en) * | 2020-02-26 | 2020-07-03 | 中国科学院广州能源研究所 | Solar energy combined double-well closed type enhanced geothermal heating system |
| CN111609575A (en) * | 2020-06-18 | 2020-09-01 | 青海省第二地质勘查院 | Hot dry rock heat transfer device that can local secondary heat transfer |
| CN112303942B (en) * | 2020-09-23 | 2021-11-23 | 中国地质科学院勘探技术研究所 | Hot dry rock non-fracturing butt well heat taking device |
| CN112303942A (en) * | 2020-09-23 | 2021-02-02 | 中国地质科学院勘探技术研究所 | Hot dry rock non-fracturing butt well heat taking device |
| CN113531930A (en) * | 2021-08-02 | 2021-10-22 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Underground heat exchange device for exchanging heat by using mine pit water |
| CN114659284A (en) * | 2022-03-31 | 2022-06-24 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Multistage circulating heat-taking device and method for high-temperature rock mass |
| CN115854572A (en) * | 2022-11-25 | 2023-03-28 | 河南豫中地质勘查工程有限公司 | Underground enhanced heat exchange system for U-shaped geothermal well and optimization method |
| NL2038307A (en) | 2023-10-16 | 2024-08-29 | Univ Tianjin | A high-efficient heat extraction system for a single well open-loop forced circulation in hot dry rock |
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