CN209706377U - Mid-deep strata high efficient heat exchanging geothermal well system - Google Patents
Mid-deep strata high efficient heat exchanging geothermal well system Download PDFInfo
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- CN209706377U CN209706377U CN201920382322.5U CN201920382322U CN209706377U CN 209706377 U CN209706377 U CN 209706377U CN 201920382322 U CN201920382322 U CN 201920382322U CN 209706377 U CN209706377 U CN 209706377U
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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
A kind of mid-deep strata high efficient heat exchanging geothermal well system, including ground heat-exchange system and underground heat exchange system, the underground heat exchange system includes heat exchanger tube, heat exchange well and reservoir, the heat exchanger tube is located in the heat exchange well, the heat exchanger tube is connected to the ground heat-exchange system, the heat exchanger tube includes geothermal well water inlet pipe section, geothermal well U-tube section and geothermal well the water outlet pipeline section being sequentially communicated, and the part and the geothermal well U-tube section of the geothermal well water inlet pipe section and geothermal well water outlet pipeline section are located in the reservoir；The geothermal well water inlet pipe section and geothermal well water outlet pipeline section are respectively communicated with the ground heat-exchange system；The heat exchange well includes that geothermal well one interconnected opens casing and geothermal well two opens casing, and the geothermal well one is opened casing and is located on the outside of the geothermal well water inlet pipe section and geothermal well water outlet pipeline section, and the geothermal well two opens sleeve portion and protrudes into the reservoir.The utility model has the advantages that energy conservation and environmental protection, heat transfer rate are high.
Description
Technical field
The utility model belongs to geothermal well and geothermal energy utilization technical field, in particular to a kind of mid-deep strata high efficient heat exchanging
Hot well system.
Background technique
GEOTHERMAL WATER heat supply has saving fossil fuel than other energy heat supplies and does not cause the special excellent of urban atmospheric pollution
Point, as a kind of alternative new energy, development and utilization is being taken seriously.
Geothermal water exploitation system is divided to by Land use systems to be had directly using with two kinds of indirect utilization: directly utilizing is geothermal water
It is introduced directly into heat user system；Indirect utilization is to heat secondary water by surface-type heat exchanger with GEOTHERMAL WATER, secondary water enters heat
Custom system circulation heating.The a large amount of exploiting groundwaters of GEOTHERMAL WATER heating system directly utilized, this can make the recharge of ground water insufficient
Level of ground water declines year by year, and containing ingredients such as hydrogen sulfide, the pipeline of hot-water heating system and equipment can be made over the ground in GEOTHERMAL WATER
At corrosion.The GEOTHERMAL WATER heating system of indirect utilization is more complex, capital expenditure is higher, and the heat exchanger in GEOTHERMAL WATER heating system
Also the shortcomings that having corrosion and scaling.
A kind of concentric shaft type individual well heat transfer technology is risen again in the industry in recent years, is heat exchange efficiency there are most important problem
It is lower.If a kind of simple method can be used, the heat for relatively efficiently absorbing underground is carried out using just more satisfactory.
Utility model content
The purpose of the utility model is to provide a kind of mid-deep strata high efficient heat exchanging geothermal well systems, have energy conservation and environmental protection, heat exchange
The high advantage of rate.
The technology employed by the present utility model is
A kind of mid-deep strata high efficient heat exchanging geothermal well system, including ground heat-exchange system and underground heat exchange system, the underground
Heat-exchange system includes heat exchanger tube, heat exchange well and reservoir, and the heat exchanger tube is located in the heat exchange well, the heat exchanger tube and institute
The connection of ground heat-exchange system is stated, the heat exchanger tube includes geothermal well water inlet pipe section, geothermal well U-tube section and the ground being sequentially communicated
Hot well is discharged pipeline section, the part and the geothermal well U-tube of the geothermal well water inlet pipe section and geothermal well water outlet pipeline section
Section is located in the reservoir；The geothermal well water inlet pipe section and geothermal well water outlet pipeline section are respectively communicated with the ground heat exchange
System；The heat exchange well includes that geothermal well one interconnected opens casing and geothermal well two opens casing, and the geothermal well one opens set
Pipe is located on the outside of the geothermal well water inlet pipe section and geothermal well water outlet pipeline section, and the geothermal well two opens sleeve portion and protrudes into institute
State reservoir.
By adopting the above technical scheme, recirculated water is sent directly into heat exchanger tube and reservoir carries out heat exchange, recirculated water passes through
Reservoir can efficiently absorb the heat of underground, carry out the heat exchange efficiency of heat exchange more after compared with prior art taking out GEOTHERMAL WATER
It is high.Simultaneously using the method for " heat is taken not fetch water ", recharge is not needed, so as to avoid the exhaustive exploitation to GEOTHERMAL WATER, causes ground
Lower water level decreasing also avoids influence of the geothermal tail water to environment.
Further preferably are as follows: the reservoir includes sandstone aquifer and shale layer, and the geothermal well two is opened casing and is located at
Casing at the sandstone aquifer is changed to screen casing.
By adopting the above technical scheme, GEOTHERMAL WATER can be circulated inside and outside casing by screen casing, and GEOTHERMAL WATER can sufficiently and recirculated water
Heat exchange is carried out, heat exchange effect is more preferable.
Further preferably are as follows: be arranged at the crossover position that the shale layer bottom end is transitioned into the sandstone aquifer top
There is special water-stop, the special water-stop and the geothermal well two open casing connection.
By adopting the above technical scheme, top cold water and GEOTHERMAL WATER can be separated by the way that special water-stop is arranged, avoids ground
Hot water pours in stratum top pollution top cold water, plays environmentally protective effect, while also avoiding top cold water and flowing into storage
The temperature of thermosphere reduction reservoir.
Further preferably are as follows: the geothermal well one is opened complete using whole section of cementing concrete at the annular space of casing and the geothermal well borehole wall
Well cementation.
By adopting the above technical scheme, it by whole section of full well cementation, avoids pressure-bearing GEOTHERMAL WATER and pours in top, to top cold water layer
Pollution；Top cold water is also avoided simultaneously flows out cooling GEOTHERMAL WATER；And it can be reached to recirculated water is flowed through by whole section of full well cementation
The effect of heat preservation.
Further preferably are as follows: the geothermal well one opens casing and geothermal well two opens casing by wearing sleeve connection.
By adopting the above technical scheme, geothermal well two opens casing and opens the wellbore stabilities that section is opened in casing guarantee two less than geothermal well one
Property, also save drilling cost.
Further preferably are as follows: the special water-stop is Conjuncted umbrella type water-stop.
By adopting the above technical scheme, the water-stagnating effect of special water-stop is more preferable.
Further preferably are as follows: geothermal well circulating pump, the geothermal well water outlet are provided in the underground heat well water inlet pipe section
User's circulating pump is provided on pipeline section.
By adopting the above technical scheme, by pressurizeing respectively to each section of recirculated water, keep recirculated water circulation more smooth.
Further preferably are as follows: the heat exchanger tube is provided with recirculated water, and the recirculated water is pure water.
By adopting the above technical scheme, pure water will not generate corrosion and scaling to pipeline, this keeps pipeline more durable.
Further preferably are as follows: the geothermal well water inlet pipe section and the geothermal well in casing are opened positioned at the geothermal well one
The pipeline section outer surface of water outlet pipeline section is provided with insulating layer.
By adopting the above technical scheme, insulating layer has heat insulation effect, and thermal loss is smaller when transmitting after recirculated water heat exchange, mentions
The high utilization rate of geothermal energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment, illustrates the specific structure of mid-deep strata high efficient heat exchanging geothermal well system；
In figure, 1, ground heat-exchange system；2, underground heat exchange system；3, heat exchanger tube；4, heat exchange well；5, geothermal well water inlet pipe
Section；6, geothermal well U-tube section；7, geothermal well is discharged pipeline section；8, geothermal well one opens casing；9, geothermal well two opens casing；10, sealing
Device；11, screen casing；12, geothermal well circulating pump；13, user's circulating pump；14, reservoir；15, sandstone aquifer；16, shale layer.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of mid-deep strata high efficient heat exchanging geothermal well system, including ground heat-exchange system 1 and underground heat exchange system
System 2.The underground heat exchange system 2 includes heat exchanger tube 3, heat exchange well 4 and reservoir 14, and the heat exchanger tube 3 is located at the heat exchange
In well 4, the heat exchanger tube 3 is connected to the ground heat-exchange system 1.
The heat exchanger tube 3 includes geothermal well water inlet pipe section 5, geothermal well U-tube section 6 and the geothermal well water outlet being sequentially communicated
Pipeline section 7.The geothermal well water inlet pipe section 5 and the geothermal well water outlet part of pipeline section 7 and geothermal well U-tube section 6 described
In in the reservoir 14, the geothermal well water inlet pipe section 5 and geothermal well water outlet pipeline section 7 are respectively communicated with the ground heat exchange
System 1 is provided with geothermal well circulating pump 12 in the underground heat well water inlet pipe section 5, is provided on the geothermal well water outlet pipeline section 7
User's circulating pump 13.Recirculated water enters reservoir 14 by the geothermal well water inlet pipe section 5, by heat exchanger tube 3 with reservoir 14
Heat exchange is carried out, heat exchange efficiency is high.
The heat exchange well 4 opens casing 8 including geothermal well one interconnected and geothermal well two opens casing 9, the geothermal well
One open casing 8 and geothermal well two to open casing 9 be petroleum casing pipe.The geothermal well one, which opens casing 8 and is located at the geothermal well, enters water
7 outside of pipeline section 5 and geothermal well water outlet pipeline section, the geothermal well two open casing 9 and partially protrude into reservoir 14.The reservoir
14 include sandstone aquifer 15 and shale layer 16, and the geothermal well two opens the casing that casing 9 is located at the sandstone aquifer 15
For screen casing 11.Special stop is provided at the crossover position that 16 bottom end of shale layer is transitioned into 15 top of sandstone aquifer
Hydrophone 10, the special water-stop 10 are opened casing 9 with the geothermal well two and are connect.The special water-stop 10 is preferably conjuncted umbrella
Formula water-stop.4 borehole wall of heat exchange well is reinforced by the casing in heat exchange well 4,4 well of heat exchange well can be effectively prevent
Wall collapses, while the GEOTHERMAL WATER in the reservoir 14 passes through in the casing sleeve pipe of the heat exchange well 4 and in heat exchanger tube 3
Recirculated water heat exchange, this provides a space for heat exchange.
The geothermal well one is opened at the annular space of casing 8 and the geothermal well borehole wall using whole section of cementing concrete full well cementation.Positioned at institute
State the pipeline section outer surface setting of the geothermal well water inlet pipe section 5 and geothermal well water outlet pipeline section 7 that geothermal well one is opened in casing 8
There is insulating layer, the insulating layer is made of existing insulating rubber plastic.
Tap water can be selected in recirculated water in the present embodiment, and pure water, the recirculated water is preferably pure water.
Geothermal well one described in the present embodiment opens casing 8 and what the geothermal well two opened that the connection type of casing 9 uses wears
Sleeve connection.
The step of heat-exchange method of the mid-deep strata high efficient heat exchanging geothermal well system, heat exchange includes:
(1) recirculated water enters reservoir 14 by geothermal well water inlet pipe section 5；
(2) recirculated water is exchanged heat at reservoir 14 by heat exchanger tube 3 and reservoir 14；
(3) recirculated water after exchanging heat is discharged pipeline section 7 by geothermal well and is transported to ground heat-exchange system 1 for users to use；
(4) recirculated water after use returns to geothermal well water inlet pipe section 5 and continues cycling through heat exchange, repeats step (1).
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as within the protection scope of the present utility model all by the protection of Patent Law.
Claims (9)
1. a kind of mid-deep strata high efficient heat exchanging geothermal well system, including ground heat-exchange system (1) and underground heat exchange system (2), described
Underground heat exchange system (2) includes heat exchanger tube (3), heat exchange well (4) and reservoir (14), and the heat exchanger tube (3) is located at described change
In hot well (4), the heat exchanger tube (3) is connected to the ground heat-exchange system (1), it is characterised in that: the heat exchanger tube (3) includes
Geothermal well water inlet pipe section (5), geothermal well U-tube section (6) and geothermal well water outlet pipeline section (7) being sequentially communicated, the geothermal well
The part and the geothermal well U-tube section (6) of water inlet pipe section (5) and geothermal well water outlet pipeline section (7) are located at the heat accumulation
In layer (14)；The geothermal well water inlet pipe section (5) and geothermal well water outlet pipeline section (7) are respectively communicated with the ground heat-exchange system
(1)；The heat exchange well (4) includes that geothermal well one interconnected opens casing (8) and geothermal well two opens casing (9), the underground heat
Well one is opened casing (8) and is located on the outside of the geothermal well water inlet pipe section (5) and geothermal well water outlet pipeline section (7), the geothermal well
Two, which open casing (9), partially protrudes into the reservoir (14).
2. mid-deep strata high efficient heat exchanging geothermal well system according to claim 1, which is characterized in that reservoir (14) packet
Sandstone aquifer (15) and shale layer (16) are included, the geothermal well two is opened casing (9) and is located at the sandstone aquifer (15)
Casing is changed to screen casing (11).
3. mid-deep strata high efficient heat exchanging geothermal well system according to claim 2, which is characterized in that in the shale layer (16)
Bottom end is transitioned at the crossover position on the sandstone aquifer (15) top and is provided with special water-stop (10), the special sealing
Device (10) is opened casing (9) with the geothermal well two and is connect.
4. mid-deep strata high efficient heat exchanging geothermal well system according to claim 1, which is characterized in that the geothermal well one opens set
It manages at the annular space of (8) and the geothermal well borehole wall using whole section of cementing concrete full well cementation.
5. mid-deep strata high efficient heat exchanging geothermal well system according to claim 1, which is characterized in that the geothermal well one opens set
Pipe (8) and geothermal well two open casing (9) by wearing sleeve connection.
6. mid-deep strata high efficient heat exchanging geothermal well system according to claim 3, which is characterized in that the special water-stop
It (10) is Conjuncted umbrella type water-stop.
7. mid-deep strata high efficient heat exchanging geothermal well system according to claim 1, which is characterized in that the underground heat well enters water
It is provided on pipeline section (5) geothermal well circulating pump (12), is provided with user's circulating pump (13) on geothermal well water outlet pipeline section (7).
8. mid-deep strata high efficient heat exchanging geothermal well system according to claim 1, which is characterized in that in the heat exchanger tube (3)
Equipped with recirculated water, the recirculated water is pure water.
9. mid-deep strata high efficient heat exchanging geothermal well system according to claim 1, which is characterized in that be located at the geothermal well one
The pipeline section outer surface for opening the geothermal well water inlet pipe section (5) and the geothermal well water outlet pipeline section (7) in casing (8) is provided with guarantor
Warm layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920382322.5U CN209706377U (en) | 2019-03-25 | 2019-03-25 | Mid-deep strata high efficient heat exchanging geothermal well system |
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| CN201920382322.5U CN209706377U (en) | 2019-03-25 | 2019-03-25 | Mid-deep strata high efficient heat exchanging geothermal well system |
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| CN209706377U true CN209706377U (en) | 2019-11-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984849A (en) * | 2021-03-22 | 2021-06-18 | 太原理工大学 | Cold and military system karst heat storage and metamorphic rock stratum fracture type heat storage geothermal development method |
| CN114232591A (en) * | 2021-12-31 | 2022-03-25 | 核工业北京地质研究院 | Wellhead foundation reinforcement treatment method for high-temperature geothermal well |
-
2019
- 2019-03-25 CN CN201920382322.5U patent/CN209706377U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112984849A (en) * | 2021-03-22 | 2021-06-18 | 太原理工大学 | Cold and military system karst heat storage and metamorphic rock stratum fracture type heat storage geothermal development method |
| CN114232591A (en) * | 2021-12-31 | 2022-03-25 | 核工业北京地质研究院 | Wellhead foundation reinforcement treatment method for high-temperature geothermal well |
| CN114232591B (en) * | 2021-12-31 | 2023-08-15 | 核工业北京地质研究院 | Wellhead foundation reinforcement treatment method for high-temperature geothermal well |
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