CN109931650A - Utilize heat pipe and the united mid-deep strata geothermal heating system of central tube - Google Patents
Utilize heat pipe and the united mid-deep strata geothermal heating system of central tube Download PDFInfo
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- CN109931650A CN109931650A CN201811482389.2A CN201811482389A CN109931650A CN 109931650 A CN109931650 A CN 109931650A CN 201811482389 A CN201811482389 A CN 201811482389A CN 109931650 A CN109931650 A CN 109931650A
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- central tube
- heat pipe
- pipe
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention, which discloses, a kind of utilizes heat pipe and the united mid-deep strata geothermal heating system of central tube, including heat pipe (1), casing (2), central tube (3) and heat pump system.The high temperature heat in the surrounding formation of shaft bottom is collected using heat pipe, which is delivered heat to by circulatory mediator by the upper end of heat pipe, can significantly strengthen the heat exchange of wellbore bottom；The heat dissipation capacity that circulatory mediator in central tube can be effectively reduced using pipe centered on the pipe of glass complex centre, can effectively improve the grade of mined geothermal energy；Meanwhile promotion reformation is carried out to mined geothermal energy grade using heat pump, to meet different heat demands.The advantages of present invention incorporates above two mining methods, and it is combined with heat pump techniques, have the characteristics that hot production efficiency is high, operating cost is low, no pollution to the environment and sustainability are good.
Description
Technical field
The invention belongs to geothermal energy development technical field, it is specifically designed and a kind of is combined using heat pipe with glass complex centre pipe
Geothermal heating system.
Background technique
Currently, China's heating there are about 8% fossil energy for winter every year, the powder that winter heating is given off
Dirt and SO2The main inducing that current city haze is formed is also become, carrying out heating using geothermal energy resources is to alleviate haze to pollute
Effective means.And in current mid-deep strata geothermal energy heating technology, mainly the noiseless of pipe centered on PE pipe is used to open
Mining method causes out saliva since PE pipe thermal conductivity is larger, circulation of fluid is due to the easy appearance viscous flow phenomenon in shaft bottom etc.
Temperature, heat exploitation power and comprehensive energy efficiency are than low problem.And in the noiseless underground heat exploitation using overlength heat pipe, due to well
Mouth and the reasons such as the shaft bottom temperature difference is small, gas-liquid two-phase media flow resistance is big, gas-phase working medium have condensed before being promoted to well head,
Cause the problem of the low and mined low difference of geothermal energy grade of heat exploitation power.
Summary of the invention
In order to overcome the disadvantages of the above prior art, joined the purpose of the present invention is to provide a kind of using heat pipe and central tube
The geothermal heating system of conjunction.
Heat pipe and the united mid-deep strata geothermal heating system of central tube are utilized the invention discloses a kind of, comprising: for setting
The heat pipe in geothermal well shaft bottom is set, there is heat-exchange working medium in the heat pipe；Casing, lower end are connect with the upper end of the heat pipe,
Upper end forms the SAPMAC method medium inlet of geothermal well or connect with the SAPMAC method medium inlet of geothermal well；Central tube is mounted on
The inside of the intermediate casing, the lower end of the central tube are vacantly arranged adjacent to the upper end of the heat pipe, the central tube
Upper end forms the hot circulating medium outlet of geothermal well or exports connection with the hot circulating medium of geothermal well；And heat pump system,
Include: evaporator, is connect with hot circulating medium outlet and the SAPMAC method medium inlet, condenser, with heating
Side water return pipeline and heating side water supply pipe connection, heat pump working media follow between the evaporator and the condenser
Ring.
In one embodiment, the central tube passes through one or more centralizers and the concentric position of intermediate casing holding
It sets.
In one embodiment, the central tube is the glass multiple tube of two-tube sandwich, has inner and outer tubes, inner tube
It is PPR material with outer tube, forms compound glass fiber insulation layer among inner and outer tubes.
In one embodiment, one or more fins are set in the upper end of the heat pipe.
In one embodiment, the heat pipe includes one or more son pipes, and injection is as heat-exchange working medium in the sub- pipe
Ethyl alcohol simultaneously vacuumizes sealing.
In one embodiment, the sub- pipe is steel pipe.
In one embodiment, circulation is set on the circulation line between the evaporator and the SAPMAC method medium inlet
Medium pump.
In one embodiment, the upper end of the central tube is higher by the upper end of described sleeve pipe.
In one embodiment, the heat pipe and described sleeve pipe are integral structures；Or the heat pipe and described sleeve pipe are led to
Cross screwed connection.
In one embodiment, the heat pump system further includes compressor and throttle valve.
Through the invention, the high temperature heat in the surrounding formation of shaft bottom is collected using heat pipe, it should by the upper end of heat pipe
Heat delivers heat to circulatory mediator, can significantly strengthen the heat exchange of wellbore bottom；Using being managed centered on the pipe of glass complex centre
The heat dissipation capacity that circulatory mediator in central tube can effectively be reduced, can effectively improve the grade of mined geothermal energy；Meanwhile
Promotion reformation is carried out to mined geothermal energy grade using heat pump, to meet different heat demands.Present invention incorporates
The advantages of above two mining method, and it is combined with heat pump techniques, have hot production efficiency height, operating cost low, right
Environmental nonpollution and the good feature of sustainability.
Structure of the invention has the advantage that
(1) heat pipe can be steel ethyl alcohol heat pipe, and vacuum degree is small, long service life, pollution-free to stratum；
(2) central tube good heat-insulation effect, high temperature resistant, high pressure resistant, intensity is high, it can be achieved that safe and reliable；
(3) hot recovery well can be cemented the well using G grades of cementing concretes, and shaft structure is stablized, and be adapted to Different Strata；
(4) system structure is simple, is easily installed, maintenance and operation；
(5) system combines heat pump techniques, can meet different heating index demands；
(6) the system heat transfer intensity is big, improves heat exploitation power.Central tube radiation loss is small, the underground heat exploited
Energy grade is high, improves the comprehensive energy efficiency ratio of system；
(7) economical rationality, high-efficiency environment friendly, sustainable use characteristic are good.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Appended drawing reference:
1, heat pipe；2, casing；3, central tube；4, centralizer；5, fin；6, hot circulating medium exports；7, SAPMAC method medium
Entrance；8, stratum；9, circulatory mediator pumps；10, evaporator；11, throttle valve；12, condenser；13, compressor；BG, heat pump work
Medium；NH, heating side water return pipeline；NG, heating side water supply pipe.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Formula elaborates to the present invention.
The nouns of locality such as upper and lower, left and right used in present invention description, merely to being described in conjunction with the accompanying conveniently, and unlimited
Determine dependency structure to be only capable of in illustrated orientation.
It is a kind of to utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, including heat pipe 1, casing 2, central tube 3
And heat pump system.
The setting of heat pipe 1 has heat-exchange working medium in geothermal well shaft bottom, the heat pipe 1.
The lower end of casing 2 is connect with the upper end of the heat pipe 1, upper end formed SAPMAC method medium inlet 7 or with geothermal well
SAPMAC method medium inlet 7 connects.Circulatory mediator is, for example, water.
Central tube 3 is mounted on the inside of the intermediate casing 2, and the lower end of the central tube 3 is vacantly arranged adjacent to described
The upper end of heat pipe 1, the upper end of the central tube 3 form the hot circulating medium outlet 6 of geothermal well or are situated between with the thermal cycle of geothermal well
6 connection of matter outlet.
Heat pump system includes evaporator 10, is connected with hot circulating medium outlet 6 and the SAPMAC method medium inlet 7
It connects；Condenser 12 is connect with heating side circulation and heating side water supply pipe；Heat pump working media BG is in the evaporator 10
It is recycled between the condenser 12.As shown in Figure 1, heat pump system can also include other constituent element, for example including compression
The connection type and function mode of machine 13 and throttle valve 11, compressor and throttle valve and evaporator and condenser be it is known,
This is repeated no more.
The central tube 3 passes through one or more centralizers 4 and keeps concentric position with the intermediate casing 2.
The central tube 3 is the glass multiple tube of two-tube sandwich, has inner and outer tubes, inner and outer tubes PPR
Material, inner and outer tubes centre form compound glass fiber insulation layer.The synthesis thermal conductivity of central tube 3 is only 0.03W/ DEG C of .m.
This, glass complex centre pipe good heat-insulation effect, high temperature resistant, high pressure resistant, intensity is high, it can be achieved that safe and reliable.
The upper end of central tube 3 is higher by the upper end of described sleeve pipe 2.It is easily installed in this way.
Multiple fins 5 are set in the upper end of the heat pipe 1, strengthen its heat exchange between circulatory mediator.
The heat pipe 1 may include one or more son pipes, and sub- pipe can be steel pipe, and injection is as heat exchange in the sub- pipe
The ethyl alcohol of working medium simultaneously vacuumizes sealing.The vacuum degree of this heat pipe is small, and long service life is pollution-free to stratum.In this way, can be strong
Change the diabatic process of underground heat bottom, and not will cause the pollution of stratum and underground water.
The installation method of structure of the invention introduced below:
In arrangement, first using drilling machine to bore such as depth as 2500m~3000m, diameter is the vertical of 200mm~300mm
Well arranges heat pipe in shaft bottom, such as heat pipe may include several root pipes of vertical stacking, and ethyl alcohol is injected in sub- pipe and is extracted into one
Fixed vacuum degree rear enclosed, to form the heat pipe 1 in shaft bottom；Tripping in is for exampleCasing 2, by screw thread by heat pipe 1 with
Casing 2 is attached；It is cemented the well (such as using G grades of cementing concretes)；The tripping in casing 2Central tube 3,
And the proper alignment of central tube 3 and casing 2 is kept by centralizer 4.Certainly, heat pipe 1 and described sleeve pipe 2 are also possible to integral type knot
Structure.
The method of operation of structure of the invention introduced below:
When the present invention is run, circulatory mediator from the annular space between 7 sleeve pipe 2 of SAPMAC method medium inlet and central tube 3,
The heat in stratum 8 is constantly absorbed during its downlink, while absorbing the upper end especially wing from the heat pipe 1 in geothermal well shaft bottom
The heat that piece 5 transmits, circulatory mediator enter central tube 3 from shaft bottom, and the high warm come out from hot circulating medium outlet 6 is followed
Ring medium enters in the evaporator 10 of the heat pump system, transfers thermal energy to after heat pump working media again from SAPMAC method medium
Entrance 7 returns to pit shaft, after being promoted using the geothermal energy grade that evaporator 10 is collected by heat pump system, is transmitted by condenser 12
To the heating circulation water of heating system.
Here, the grade of geothermal energy is improved by heat pump, is directly used in heating.It can be by adjusting thermal production well
Depth and diameter are to adapt to the requirements of different heating demands.The depth of geothermal well can be determined according to the size of Heating Load
Degree, guarantees the sustainability demand of heating system.Hot production efficiency is high, reduces " fire is used " damage in geothermal energy recovery process
It loses, improves systematic energy efficiency ratio.
Circulatory mediator is set on the circulation line between the evaporator 10 and the SAPMAC method medium inlet 7 and pumps 9.This
Sample, circulatory mediator enter after evaporator 10 discharges heat, come out from evaporator 10 and enter circulatory mediator pump 9, after pressurization again
Enter annular space from the SAPMAC method medium inlet 7, is recycled.
Above embodiments are only exemplary embodiment of the present invention, and each embodiment can be used alone or in combination, and are not used in
The limitation present invention, protection scope of the present invention are defined by the claims.Various numerical value shown in the present invention are only schematic
, and do not have any restriction effect.Those skilled in the art can within the spirit and scope of the present invention, to the present invention
Various modifications or equivalent replacements are made, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (10)
1. a kind of utilize heat pipe and the united mid-deep strata geothermal heating system of central tube characterized by comprising
For the heat pipe (1) in geothermal well shaft bottom to be arranged in, there is heat-exchange working medium in the heat pipe (1)；
Casing (2), lower end are connect with the upper end of the heat pipe (1), upper end formed geothermal well SAPMAC method medium inlet (7) or
It is connect with the SAPMAC method medium inlet (7) of geothermal well；
Central tube (3), is mounted on the inside of the intermediate casing (2), and the lower end of the central tube (3) is vacantly arranged adjacent to
The upper end of the heat pipe (1), the upper end of the central tube (3) form hot circulating medium outlet (6) or and the geothermal well of geothermal well
Hot circulating medium outlet (6) connection；And
Heat pump system comprising:
Evaporator (10) is connect with hot circulating medium outlet (6) and the SAPMAC method medium inlet (7),
Condenser (12) is connect with heating side water return pipeline (NH) and heating side water supply pipe (NG),
Heat pump working media (BG) recycles between the evaporator (10) and the condenser (12).
2. according to claim 1 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
The central tube (3) passes through one or more centralizers (4) and the intermediate casing (2) keep concentric position.
3. according to claim 1 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
The central tube (3) is the glass multiple tube of two-tube sandwich, has inner and outer tubes, inner and outer tubes are PPR material, interior
Compound glass fiber insulation layer is formed among pipe and outer tube.
4. according to claim 1 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
In the upper end of the heat pipe (1), one or more fins (5) are set.
5. according to claim 1 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
The heat pipe (1) includes one or more son pipes, injects the ethyl alcohol as heat-exchange working medium in the sub- pipe and vacuumizes sealing.
6. according to claim 5 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
The sub- pipe is steel pipe.
7. according to claim 1 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
Circulatory mediator is set on the circulation line between the evaporator (10) and the SAPMAC method medium inlet (7) and pumps (9).
8. according to claim 1 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
The upper end of the central tube (3) is higher by the upper end of described sleeve pipe (2).
9. according to claim 1 utilize heat pipe and the united mid-deep strata geothermal heating system of central tube, which is characterized in that
The heat pipe (1) and described sleeve pipe (2) are integral structures；Or the heat pipe (1) and described sleeve pipe (2) are connected by screw thread
It connects.
10. according to claim 1 existed using heat pipe with the united mid-deep strata geothermal heating system of central tube, feature
In the heat pump system further includes compressor (13) and throttle valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482389.2A CN109931650A (en) | 2018-12-05 | 2018-12-05 | Utilize heat pipe and the united mid-deep strata geothermal heating system of central tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811482389.2A CN109931650A (en) | 2018-12-05 | 2018-12-05 | Utilize heat pipe and the united mid-deep strata geothermal heating system of central tube |
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| Publication Number | Publication Date |
|---|---|
| CN109931650A true CN109931650A (en) | 2019-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811482389.2A Pending CN109931650A (en) | 2018-12-05 | 2018-12-05 | Utilize heat pipe and the united mid-deep strata geothermal heating system of central tube |
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| CN (1) | CN109931650A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899092A (en) * | 2021-11-01 | 2022-01-07 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
-
2018
- 2018-12-05 CN CN201811482389.2A patent/CN109931650A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113899092A (en) * | 2021-11-01 | 2022-01-07 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
| CN113899092B (en) * | 2021-11-01 | 2024-02-23 | 中煤矿业集团有限公司 | Deep well heat exchange device and installation method thereof |
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