CN207515263U - Mid-deep strata underground heat bore hole heat exchanger - Google Patents
Mid-deep strata underground heat bore hole heat exchanger Download PDFInfo
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- CN207515263U CN207515263U CN201721268780.3U CN201721268780U CN207515263U CN 207515263 U CN207515263 U CN 207515263U CN 201721268780 U CN201721268780 U CN 201721268780U CN 207515263 U CN207515263 U CN 207515263U
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- outer tube
- inner sleeve
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- bore hole
- heat exchanger
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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
Abstract
The utility model discloses a kind of mid-deep strata underground heat bore hole heat exchanger, including outer tube, inner sleeve；Outer tube bottom end and side wall closing；Inner sleeve is placed in outer tube, and inner sleeve bottom end opening is connected with outer sleeve bottom；Annulus is formed between inner sleeve lateral wall and outer tube madial wall；Outer tube and inner sleeve coaxial line；Outer fin is distributed in the madial wall of outer tube；Outer fin is a plurality of circular or arc-shaped convex ribs with outer tube coaxial line or is the helical form convex ribs with outer tube coaxial line；Outer sleeve upper mouth is used to connect circulatory mediator feed line；Inner sleeve upper port flows out pipeline for connecting circulatory mediator.The mid-deep strata underground heat bore hole heat exchanger of the utility model can only exchange mid-deep strata geothermal energy for, and heat exchange efficiency is high under the premise of not pumping underground hot water, at low cost.
Description
Technical field
The utility model is related to mid-deep strata geothermal energy development utilization technologies, more particularly to mid-deep strata underground heat bore hole heat exchanger.
Background technology
About 3 DEG C/100 meters of China's Average geothermal gradient.I.e. in thermostat layer hereinafter, per increasing by 100 meters downwards, ground temperature increase is about
3℃.1000~4000 meters of underground, about 50~135 DEG C of ground temperature.This part mid-deep strata geothermal energy resources temperature be not enough to develop and use in
Power generation, but the stabilization heat source of building heat supplying can be become.
The deep geothermal heat of China's centering at present can utilize, main to be used for building heat supplying using directly exploitation mid-deep strata GEOTHERMAL WATER
Mode enriches area in terrestrial heat resources, dig geothermal well, and direct pumping underground hot water is used for building heat supplying, ground water temperature
Degree utilizes rear direct emission or recharge.But recharging technique development at present is also immature, recharge rate is relatively low（Average recharge rate is insufficient
50%）, the waste of a large amount of social resources is caused, and then cause there are Groundwater Resources Depletion geology and the disasters such as collapse
Risk.Therefore in order to protect Geothermal Resource, some authorities of local government have begun to forbid directly to exploit mid-deep strata
Groundwater resources.
Mid-deep strata underground heat bore hole heat exchanger can only exchange middle depth under the premise of mid-deep strata Geothermal Resource is not extracted
Layer underground heat energy is a kind of heat transfer technology that reasonable development mid-deep strata geothermal energy is used for building heat supplying.But existing mid-deep strata
The construction cost of hot bore hole heat exchanger is higher, constrains the all-round popularization of the technology.
Utility model content
The technical problem to be solved by the present invention is to provide mid-deep strata underground heat bore hole heat exchangers, can not extract underground
Under the premise of hot water, mid-deep strata geothermal energy is only exchanged for, and heat exchange efficiency is high, it is at low cost.
In order to solve the above technical problems, mid-deep strata underground heat bore hole heat exchanger provided by the utility model, including outer tube
11st, inner sleeve 12；
11 bottom end of outer tube and side wall closing；
The inner sleeve 12 is placed in the outer tube 11, and 12 bottom end opening of inner sleeve is the same as outer tube 11
Bottom connects；
Annulus is formed between 12 lateral wall of inner sleeve and 11 madial wall of outer tube；
The outer tube 11 and 12 coaxial line of inner sleeve；
Outer fin 110 is distributed in the madial wall of the outer tube 11；
The outer fin 110 is a plurality of circular or arc-shaped convex ribs with 11 coaxial line of outer tube or is
With the helical form convex ribs of 11 coaxial line of outer tube；
11 upper port of outer tube is used to connect circulatory mediator feed line；
12 upper port of inner sleeve flows out pipeline for connecting circulatory mediator.
Preferably, the outer fin 110 of the madial wall of the outer tube 11 is evenly arranged.
Preferably, it is injected with circulatory mediator in the outer tube 11 and inner sleeve 12.
Preferably, the lateral wall of the inner sleeve 12 is disposed with interior fin 120；
The interior fin 120 is a plurality of circular or arc-shaped convex ribs with 12 coaxial line of inner sleeve or is
With the helical form convex ribs of 12 coaxial line of inner sleeve；
The interior fin 120 is arranged with the outer fin 110 in axile displacement.
Preferably, the cross sectional shape of the interior fin 120 and outer fin 110 is rectangle, wedge shape or trapezoidal.
Preferably, the mid-deep strata underground heat bore hole heat exchanger further includes oil-well cement layer 13；
The oil-well cement layer 13 is covered in outside the outer tube 11.
Preferably, 11 length of outer tube is 1000 meters to 4000 meters.
Preferably, the internal diameter of the outer tube 11 is 1.3 to 1.6 times of the internal diameter of the inner sleeve 12.
Preferably, the circulatory mediator is water or ethylene glycol solution.
Preferably, the outer tube 11 and its outer fin 110 are J55 or N80 or P110 oil steel pipes；
The inner sleeve 12 and its interior fin 120 are macromolecule composite adiabatic material.
The mid-deep strata underground heat bore hole heat exchanger of the utility model, is installed in rock-soil layer 14, and circulatory mediator is from inner sleeve 12
Annulus between outer tube 11 flows downward, by 12 tube wall of outer tube from high ambient temperatures rock during flowing downward
Soil layer 14 absorbs heat, and circulatory mediator temperature constantly increases；After circulatory mediator reaches bottom, flowed up into inner sleeve 12,
Final outflow inner sleeve 12, the circulatory mediator temperature of outflow heat exchanger can be ground heating system about at 15 DEG C~60 DEG C
Heat pump main frame provides heat source earthward building heat supplying, is come back between inner sleeve 12 and outer tube 11 after circulatory mediator cooling
Annulus flows downward, and absorbs the heat of high temperature rock-soil layer 14 again, and so on forms cycle, is carried for ground heating system
For continuous-stable heat source, it can only exchange mid-deep strata geothermal energy under the premise of not pumping underground hot water, realize mid-deep strata underground heat
The Sustainable Development and Utilization of resource.Under a plurality of fin 110 arranged in the madial wall of outer tube 11 acts on, circulatory mediator is downward
It can fully be disturbed in flowing endothermic process, avoid " dead zone " occur, while outer tube 11 can be increased in heat transfer process
Heat-conducting effect increases heat exchange property, improves the heat exchange efficiency of heat exchanger, increase individual well takes heat, can not significantly increase
Under the premise of adding construction cost, the heat capacity of ground heating system is improved, reduces the synthesis cost of system.
Description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, the required attached drawing to the utility model below
It is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is one example structure schematic diagram of mid-deep strata underground heat bore hole heat exchanger of the utility model；
Fig. 2 is fin rectangular cross-section schematic diagram；
Fig. 3 is that fin section is wedge-shaped schematic diagram；
Fig. 4 is that fin section is trapezoidal schematic diagram.
Reference sign in figure：
11 outer tubes；12 inner sleeves；13 oil-well cement layers；14 rock-soil layers；110 outer fins；Fin in 120.
Specific embodiment
Below in conjunction with attached drawing, clear, complete description is carried out to the technical solution in the utility model, it is clear that retouched
The embodiment stated is the part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the range of the utility model protection.
Embodiment one
As shown in Figure 1, mid-deep strata underground heat bore hole heat exchanger includes outer tube 11, inner sleeve 12；
11 bottom end of outer tube and side wall closing；
The inner sleeve 12 is placed in the outer tube 11, and 12 bottom end opening of inner sleeve connects with 11 bottom of outer tube
It is logical；
Annulus is formed between 12 lateral wall of inner sleeve and 11 madial wall of outer tube；
The outer tube 11 and 12 coaxial line of inner sleeve；
Outer fin 110 is distributed in the madial wall of the outer tube 11；
The outer fin 110 be with a plurality of circular or arc-shaped convex ribs of 11 coaxial line of outer tube or for institute
State the helical form convex ribs of 11 coaxial line of outer tube；
11 upper port of outer tube is used to connect circulatory mediator feed line；
12 upper port of inner sleeve flows out pipeline for connecting circulatory mediator.
Preferably, the outer fin 110 of the madial wall of the outer tube 11 is evenly arranged.
Preferably, it is injected with circulatory mediator in the outer tube 11 and inner sleeve.
The mid-deep strata underground heat bore hole heat exchanger of embodiment one, is installed in rock-soil layer 14, and circulatory mediator is from 12 He of inner sleeve
Annulus between outer tube 11 flows downward, by 12 tube wall of outer tube from high ambient temperatures ground during flowing downward
Layer 14 absorbs heat, and circulatory mediator temperature constantly increases；After circulatory mediator reaches bottom, flowed up into inner sleeve 12, most
Outflow inner sleeve 12 eventually, the circulatory mediator temperature of outflow heat exchanger can be ground heating system heat about at 15 DEG C~60 DEG C
It pumps host and heat source earthward building heat supplying is provided, the ring between inner sleeve 12 and outer tube 11 is come back to after circulatory mediator cooling
Shape space flows downward, and absorbs the heat of high temperature rock-soil layer 14 again, and so on forms cycle, is provided for ground heating system
Continuous-stable heat source can only exchange mid-deep strata geothermal energy under the premise of not pumping underground hot water, realize mid-deep strata underground heat money
The Sustainable Development and Utilization in source.Outer tube 11 madial wall arrange a plurality of fin 110 act under, circulatory mediator to flow down
It can fully be disturbed in dynamic endothermic process, avoid " dead zone " occur, while leading for outer tube 11 can be increased in heat transfer process
Thermal effect increases heat exchange property, improves the heat exchange efficiency of heat exchanger, increase individual well takes heat, can not increase considerably
Under the premise of construction cost, the heat capacity of ground heating system is improved, reduces the synthesis cost of system.
Embodiment two
Mid-deep strata underground heat bore hole heat exchanger based on embodiment one, the lateral wall of the inner sleeve 12 are disposed with interior fin
120；
The interior fin 120 be with a plurality of circular or arc-shaped convex ribs of 11 coaxial line of inner sleeve or for institute
State the helical form convex ribs of 12 coaxial line of inner sleeve；
The interior fin 120 is arranged with the outer fin 110 in axile displacement.
Preferably, the cross sectional shape of the interior fin 120 and outer fin 110 can be rectangle（As shown in Figure 2）, wedge shape
（As shown in Figure 3）It is or trapezoidal（As shown in Figure 4）.
The mid-deep strata underground heat bore hole heat exchanger of embodiment two, the outer fin 120 and inner sleeve of the madial wall distribution of outer tube 11
The interior fin 120 of the lateral wall of pipe 12 is dislocatedly distributed in an axial direction, in the outer fin 110 and interior fin 120 being dislocatedly distributed in an axial direction
Under effect, circulatory mediator is fully disturbed in the endothermic process that flows downward, and effectively avoids occurring in heat transfer process " dead
Area " exchanges the heat of high-temperature rock stratum for the full extent, improves the heat exchange efficiency of mid-deep strata bore hole heat exchanger.
Embodiment three
Based on embodiment two, the mid-deep strata underground heat bore hole heat exchanger further includes oil-well cement layer 13；
The oil-well cement layer 13 is covered in outside the outer tube 11.
Preferably, 11 length of outer tube is 1000 meters to 4000 meters.
Preferably, the internal diameter of the outer tube 11 is 1.3 to 3 times of the internal diameter of the inner sleeve 12.
Preferably, the circulatory mediator is water or ethylene glycol solution.
Preferably, the outer tube 11 and its outer fin 110 are J55 or N80 or P110 oil steel pipes, have higher resistance to
Pressure, corrosion resistance.J represents cast steel, and N represents nickel alloy steel, and P represents precision metallic steel alloy, digital representation pressure-bearing grade below
Not, number represents that pressure-bearing rank is 80000PSI for 80（Pound/square inch）.
Preferably, the inner sleeve 12 and its interior fin 120 are macromolecule composite adiabatic material, there is higher resistance to pressure
Energy and heat-insulating property.
The mid-deep strata underground heat bore hole heat exchanger of embodiment three, outer tube 11 cover oil-well cement layer 13 outside, it is ensured that change
Hot device leakproofness, will not water-bearing layer each with underground rock-soil layer the wall of a borehole, oil-gas Layer gang up.
With ripe petroleum drilling technology, drill to underground high-temperature rock stratum, according to the geothermal gradient condition of different regions,
About 1000 meters to 4000 meters of drilling depth.The double-jacket tube formula mid-deep strata underground heat bore hole heat exchanger of embodiment three, is embedded in depth about
During 1000 meters to 4000 meters of rock-soil layer 14 drills, mid-deep strata geothermal energy can be made full use of.
It these are only the preferred embodiment of the application, be not used to limit the application.Those skilled in the art is come
It says, the application can have various modifications and variations.All any modifications within spirit herein and principle, made are equal
Replace, improve etc., it should be included within the protection domain of the application.
Claims (10)
1. a kind of mid-deep strata underground heat bore hole heat exchanger, which is characterized in that including outer tube（11）, inner sleeve（12）；
The outer tube（11）Bottom end and side wall closing；
The inner sleeve（12）It is placed in the outer tube（11）It is interior, the inner sleeve（12）The same outer tube of bottom end opening（11）Bottom
Connection；
The inner sleeve（12）Lateral wall and outer tube（11）Annulus is formed between madial wall；
The outer tube（11）With inner sleeve（12）Coaxial line；
The outer tube（11）Madial wall outer fin is distributed with（110）；
The outer fin（110）For with the outer tube（11）The a plurality of circular or arc-shaped convex ribs of coaxial line or for institute
State outer tube（11）The helical form convex ribs of coaxial line；
The outer tube（11）Upper port is used to connect circulatory mediator feed line；
The inner sleeve（12）Upper port flows out pipeline for connecting circulatory mediator.
2. mid-deep strata underground heat bore hole heat exchanger according to claim 1, which is characterized in that
The outer tube（11）Madial wall outer fin（110）It is evenly arranged.
3. mid-deep strata underground heat bore hole heat exchanger according to claim 1, which is characterized in that
The outer tube（11）And inner sleeve（12）Inside it is injected with circulatory mediator.
4. mid-deep strata underground heat bore hole heat exchanger according to claim 1, which is characterized in that
The inner sleeve（12）Lateral wall be disposed with interior fin（120）；
The interior fin（120）For with the inner sleeve（12）The a plurality of circular or arc-shaped convex ribs of coaxial line or for institute
State inner sleeve（12）The helical form convex ribs of coaxial line；
The interior fin（120）With the outer fin（110）It is arranged in axile displacement.
5. mid-deep strata underground heat bore hole heat exchanger according to claim 4, which is characterized in that
The interior fin（120）And outer fin（110）Cross sectional shape for rectangle, wedge shape or trapezoidal.
6. mid-deep strata underground heat bore hole heat exchanger according to claim 1, which is characterized in that
The mid-deep strata underground heat bore hole heat exchanger further includes oil-well cement layer（13）；
The oil-well cement layer（13）It is covered in the outer tube（11）Outside.
7. mid-deep strata underground heat bore hole heat exchanger according to claim 1, which is characterized in that
The outer tube（11）Length is 1000 meters to 4000 meters.
8. mid-deep strata underground heat bore hole heat exchanger according to claim 1, which is characterized in that
The outer tube（11）Internal diameter be the inner sleeve（12）1.3 to 3 times of internal diameter.
9. mid-deep strata underground heat bore hole heat exchanger according to claim 1, which is characterized in that
The circulatory mediator is water or ethylene glycol solution.
10. mid-deep strata underground heat bore hole heat exchanger according to claim 2, which is characterized in that
The outer tube（11）And its outer fin（110）For J55 or N80 or P110 oil steel pipes；
The inner sleeve（12）And its interior fin（120）For macromolecule composite adiabatic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268780.3U CN207515263U (en) | 2017-09-29 | 2017-09-29 | Mid-deep strata underground heat bore hole heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268780.3U CN207515263U (en) | 2017-09-29 | 2017-09-29 | Mid-deep strata underground heat bore hole heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207515263U true CN207515263U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721268780.3U Active CN207515263U (en) | 2017-09-29 | 2017-09-29 | Mid-deep strata underground heat bore hole heat exchanger |
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| CN (1) | CN207515263U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477895A (en) * | 2017-09-29 | 2017-12-15 | 上海中金能源投资有限公司 | Mid-deep strata underground heat bore hole heat exchanger |
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2017
- 2017-09-29 CN CN201721268780.3U patent/CN207515263U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477895A (en) * | 2017-09-29 | 2017-12-15 | 上海中金能源投资有限公司 | Mid-deep strata underground heat bore hole heat exchanger |
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