CN210624982U - Geothermal well micro heat pipe heat exchange system - Google Patents
Geothermal well micro heat pipe heat exchange system Download PDFInfo
- Publication number
- CN210624982U CN210624982U CN201921617704.8U CN201921617704U CN210624982U CN 210624982 U CN210624982 U CN 210624982U CN 201921617704 U CN201921617704 U CN 201921617704U CN 210624982 U CN210624982 U CN 210624982U
- Authority
- CN
- China
- Prior art keywords
- heat
- pipe
- heat exchange
- micro
- geothermal well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Road Paving Structures (AREA)
Abstract
The utility model provides a geothermal well micro heat pipe heat exchange system, which comprises a geothermal well, a micro heat pipe heat exchange device, a circulating pump, a pipe network unit, user equipment and other facilities; the utility model discloses a little heat pipe heat transfer technique through installing little heat pipe heat transfer device in the pit, with heat conduction to the heat carrier in the device main part in high temperature rock stratum (soil layer) or geothermol power aquatic, absorbs the heat carrier of heat energy and carries for user equipment through airtight pipe network system, and little heat pipe heat transfer device carries out heat transfer work in the heat carrier of release heat energy gets into geothermal well once more, and the circulation constantly carries geothermal energy for user equipment. The problems of low heat transfer efficiency, small heat transfer surface and low heat exchange capacity in the prior art are solved, water is not taken when heat is taken, and geothermal energy resources can be developed and utilized continuously.
Description
Technical Field
The utility model relates to a geothermal development technique especially relates to a little heat pipe heat transfer system of geothermal well.
Background
With the increase of the demand of human beings on renewable energy, the geothermal energy is a clean energy which is green, clean and renewable, and has the advantages of wide distribution, large reserve and the like. The government of the country and each region successively produces relevant supportive policy documents about the development and utilization of the geothermal energy, and the large-scale development and utilization of the geothermal energy are imperative.
The existing geothermal energy utilization modes are divided into a direct mining utilization mode, a mining and irrigating combination mode and a geothermal well heat exchange mode. The geothermal well heat exchange mode is divided into U-shaped pipe heat exchange and casing pipe heat exchange, and is a technology that the U-shaped pipe heat exchange and the casing pipe are installed in the geothermal well, the geothermal well is connected with ground facilities, heat-carrying fluid is injected into the geothermal well for circulation, and the geothermal well exchanges heat with a stratum based on a heat conduction mode, so that geothermal energy is developed in a mode of 'taking heat but not taking water'.
However, the heat exchange device in the prior art has the problems of low heat transfer efficiency, small heat transfer surface, low heat exchange amount and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a little heat pipe heat transfer system of geothermal well, include:
the system comprises a geothermal well, a micro heat pipe heat exchange device, a circulating pump, a pipe network unit and user equipment;
the geothermal well comprises an upper portion and a lower portion;
the micro heat pipe heat exchange device is arranged at the lower part of the geothermal well;
the micro heat pipe heat exchange device is used for conducting heat to a heat carrier;
the circulating pump is used for transmitting the heat carrier to user equipment through a pipe network unit;
the micro heat pipe heat exchange device comprises:
the device comprises a device main body, at least one micro heat pipe heat transmitter and an internal flow pipe;
the device body is tubular;
the inner flow pipe is arranged in the device main body and is tubular;
the micro heat pipe heat transmitters are distributed along the circumferential direction of the device main body, the first end of each micro heat pipe heat transmitter is positioned on the outer side of the device main body, and the second end of each micro heat pipe heat transmitter is positioned on the inner side of the device main body.
Furthermore, a gravel filler is arranged between the micro heat pipe heat exchange device and the wall of the geothermal well.
Further, the pipe network unit is closed, and the heat carrier circulates in the pipe network unit and the micro heat pipe heat exchange device.
Furthermore, the number of the micro heat pipe heat exchange devices is at least two;
at least two micro heat pipe heat exchange devices are sequentially distributed along the axial direction of the geothermal well.
Further, a separator is disposed between the upper and lower portions of the geothermal well.
Further, the heat carrier is softened water or a heat transfer medium.
Furthermore, the upper pipe network of the geothermal well comprises an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe, the outer pipe is connected with the micro heat pipe device main body, and the inner pipe is connected with the micro heat pipe device inner pipe;
the outer pipe is a heat preservation pipe, and the inner pipe is a heat insulation pipe;
and cement is adopted to fix the well between the external heat-insulating layer of the outer pipe and the wall of the geothermal well.
Furthermore, a device bottom buckle is arranged at the bottom of the bottommost micro heat pipe device in the geothermal well.
The utility model discloses little heat pipe heat transfer system of geothermal well adopts little heat pipe heat transfer technique, through the little heat pipe heat transfer device in the installation pit, overcomes the problem that heat transfer efficiency is low among the prior art, the heat transfer surface is little, the heat transfer volume is low, realizes getting heat and does not get water, the sustainable development of geothermal energy resource utilizes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a geothermal well micro heat pipe heat exchange system according to a first embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of the geothermal well micro-heat pipe heat exchange device of the present invention.
Wherein, 1-geothermal well; 2-micro heat pipe heat exchange device; 3-a circulating pump; 4-pipe network unit; 5-a user equipment; 6-a connector; 7-a separator; 8-a pipe network converter; 21-a device body; 22-micro heat pipe heat transmitter; 23-an inner flow tube; 24-installing a bottom buckle; 25-gravel pack; 11-an outer tube; 12-an inner tube; 13-a heat-insulating layer; and 14-cementing cement.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
FIG. 1 is a schematic structural diagram of a geothermal well micro heat pipe heat exchange system according to a first embodiment of the present invention; fig. 2 is a schematic cross-sectional view of the micro heat pipe heat exchanger of the present invention.
Referring to fig. 1 and 2, the system of the present embodiment includes:
the system comprises a geothermal well 1, a micro heat pipe heat exchange device 2, a circulating pump 3, a pipe network unit 4 and user equipment 5;
the geothermal well 1 comprises an upper part and a lower part;
the micro heat pipe heat exchange device 2 is arranged at the lower part of the geothermal well 1;
the micro heat pipe heat exchange device 2 is used for conducting heat to a heat carrier;
the circulation pump 3 is used for transmitting the heat carrier to the user equipment 5 through the pipe network unit 4.
In this embodiment, at ground drilling geothermal well 1, micro heat pipe heat transfer device 2 installs the lower part at geothermal well 1, and the lower part of geothermal well 1 is located high temperature rock stratum (soil layer) or geothermol power aquatic, and micro heat pipe heat transfer device 2 gives the heat carrier with the heat conduction, and the heat carrier transmits the heat for user equipment 5 through pipe network unit 4.
Wherein, micro heat pipe heat transfer device 2 in this embodiment includes:
a device body 21, at least one micro heat pipe heat transmitter 22 and an inner flow pipe 23;
the device body 21 is tubular;
the inner flow pipe 23 is tubular and is arranged in the device main body 21;
the at least one micro heat pipe heat spreader 22 is circumferentially distributed along the device body 21, a first end of each micro heat pipe heat spreader 22 is located outside the device body 21, and a second end of each micro heat pipe heat spreader 22 is located inside the device body 21.
In this embodiment, the micro heat pipe heat exchange device further includes: and (4) installing a bottom buckle. The device bottom buckle 24 is connected with the lowest micro heat pipe heat exchange device.
In this embodiment, the heat carrier flows in between the device body 21 and the internal flow pipe 23, and flows out from the internal flow pipe 23 after absorbing heat by the micro heat pipe heat exchanger 22, and is transported to the user equipment 5 through the pipe network unit 4 for use.
In this embodiment, the heat carrier is softened water or a heat transfer medium.
In this embodiment, the micro heat pipe heat transmitter 22 is a micro-scale phase change heat transmitter, the inner wall of which is a vacuum cavity with a fine structure, the cavity is filled with a heat transmission medium, the conduction liquid in the cavity starts to generate a gasification phenomenon after being heated, at this time, the heat energy is absorbed and the volume rapidly expands, the whole cavity is rapidly filled with the gas phase conduction medium, and the gas phase conduction medium is condensed when contacting a relatively cold region. And releases the heat absorbed during evaporation, the condensed conduction liquid can return to the evaporation heat source through the capillary tube of the microstructure, and the operation is repeated in the cavity, so that a large amount of heat is transferred from the high-temperature section to the low-temperature section.
In this embodiment, the pipe network unit 4 is closed, and the heat carrier circulates in the pipe network unit 4 and the micro heat pipe heat exchange device 2. I.e. the heat carrier conducts heat to the user equipment 5 and then to the device body 22 installed in the geothermal well 1 to absorb new heat energy, as shown in fig. 1, the direction indicated by the arrow is the direction of flow of the heat carrier.
In this embodiment, the pipe network unit 4 is located the pipe network of the upper portion of the geothermal well 1, and adopts a sleeve structure, that is, includes an outer pipe 11 and an inner pipe 12, the inner pipe 12 is disposed in the outer pipe 11, the pipe diameter of the outer pipe 11 is connected with the device main body 21, the pipe diameter of the inner pipe 12 is connected with the inner flow pipe 23, and the pipe network of the upper portion of the geothermal well is connected with the ground pipe network through the pipe network converter 8.
Optionally, the outer pipe 11 is a heat preservation pipe, and the inner pipe 12 is a heat insulation pipe.
In this embodiment, the pipe network converter 8 is connected to the circulation pump 3 and the user equipment 5 by using a heat preservation pipe to form an independent closed circulation system.
In the present embodiment, the user equipment 5 refers to any equipment capable of using the thermal energy, for example, equipment for power generation, heating, hot water, and the like.
In this embodiment, a plurality of geothermal wells 1 may be provided in the geothermal well 1 in the system, where the plurality is only two or more, and may be 2 as shown in fig. 1.
Optionally, the diameter of the well head is 100-. According to the energy load demand, a plurality of geothermal wells 1 are connected in parallel through a pipe network.
Optionally, in this embodiment, a separator 7 is disposed between the upper part and the lower part of the geothermal well 1.
Optionally, in this embodiment, cement is cemented 14 between the outer insulating layer 13 of the outer pipe 11 and the wall of the geothermal well.
Optionally, a gravel filler 25 is arranged between the micro heat pipe heat exchange device 2 and the wall of the geothermal well 1.
Particularly, the gravel with high heat transfer rate can be filled around the micro heat pipe heat exchange device 2, so that the collapse of a well wall can be prevented, and the heat transfer surface can be enlarged.
Optionally, in this embodiment, the heat exchange system may include at least two micro heat pipe heat exchange devices 2, that is, may include a plurality of micro heat pipe heat exchange devices 2, at least two micro heat pipe heat exchange devices 2 are sequentially distributed along the axial direction of the geothermal well, and the plurality of downhole micro heat pipe heat exchange devices 2 are arranged in a series connection manner.
Optionally, the adjacent micro heat pipe heat exchange devices 2 are connected through a connector 6.
In this embodiment, the systemThe number 2, the pipe diameter and the installation depth of the underground micro heat pipe heat exchange devices are determined according to the heat load requirement and the parameters of the geothermal well 1, the materials of the main body 21 of the micro heat pipe heat exchange device, the inner flow pipe 23 and the device bottom buckle 24 are made of aluminum alloy or steel according to the quality condition of geothermal water, the micro heat pipe heat transmitter 22 is made of materials with high corrosion resistance and high heat transmission rate such as aluminum, aluminum alloy and stainless steel, and the installation size data of the micro heat pipe heat exchange devices 2 can be adjusted according to the geothermal well 1 and the requirement. The micro heat pipe heat exchange device 2 has the applicable temperature range of-10-350 ℃, the high temperature uniformity of 1k/m and the high heat flow density of 500w/cm2-1500w/cm2And high bearing capacity 2.6 Mp.
In this embodiment, at ground drilling geothermal well 1, micro heat pipe heat transfer device 2 installs in geothermal well 1 lower part, with the heat conduction of high temperature stratum (soil layer) or geothermol power aquatic to the heat carrier in device main part 21 to make the heat carrier temperature rise, circulating pump 3 carries the heat carrier for user equipment 5 through airtight pipe network unit 4, the heat carrier of release heat energy gets into geothermal well 1 micro heat pipe heat transfer device 2 once more and carries out cycle work, the circulation constantly carries geothermal energy for user equipment 5 uses.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the technology has high energy efficiency ratio, adopts the micro heat pipe heat transfer technology, has high thermal conductivity, has large contact surface with the geothermal well, is 20-100 times of the thermal conductivity of the same metal material, and is higher than the prior geothermal underground heat exchange technology;
2) the technical system has the advantages of excellent performance, wide applicable temperature range, high temperature uniformity, high heat flow density, high pressure bearing capacity, corrosion resistance and long service life;
3) the technical system is safe and reliable, simple in structure, small in occupied area, convenient to install, easy to construct and capable of saving investment;
4) the technical system is widely applied, is suitable for development and utilization of shallow geothermal energy, middle-deep hydrothermal geothermal energy and hot dry rock, and is generally suitable for heat exchange of large ground pressure, temperature range (-10-300 ℃) and various geological strata;
5) the micro heat pipe heat exchange device in the technical system is widely applied as high-efficiency heat transfer equipment, can be customized according to different application requirements, and can be applied to the aspects of heating, refrigeration, hot water, power generation and the like in a geothermal well, a ground source heat source system, a sewage source heat pump system and a river source heat pump system, and the fields of heat dissipation of electronic equipment, industrial waste heat recycling and the like.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. A kind of geothermal well micro heat pipe heat exchange system, characterized by comprising:
the system comprises a geothermal well, a micro heat pipe heat exchange device, a circulating pump, a pipe network unit and user equipment;
the geothermal well comprises an upper portion and a lower portion;
the micro heat pipe heat exchange device is arranged at the lower part of the geothermal well;
the micro heat pipe heat exchange device is used for conducting heat to a heat carrier;
the circulating pump is used for transmitting the heat carrier to user equipment through the closed pipe network unit;
the micro heat pipe heat exchange device comprises:
the device comprises a device main body, at least one micro heat pipe heat transmitter and an internal flow pipe;
the device body is tubular;
the inner flow pipe is arranged in the device main body and is tubular;
the micro heat pipe heat transmitters are distributed along the circumferential direction of the device main body, the first end of each micro heat pipe heat transmitter is positioned on the outer side of the device main body, and the second end of each micro heat pipe heat transmitter is positioned on the inner side of the device main body.
2. The heat exchange system of claim 1,
and a gravel filler is arranged between the micro heat pipe heat exchange device and the wall of the geothermal well.
3. The heat exchange system of claim 1,
the pipe network unit is closed, and the heat carrier circulates in the pipe network unit and the micro heat pipe heat exchange device.
4. The heat exchange system of claim 1,
the number of the micro heat pipe heat exchange devices is at least two;
at least two micro heat pipe heat exchange devices are sequentially distributed along the axial direction of the geothermal well.
5. The heat exchange system of claim 1,
a separator is disposed between the upper and lower portions of the geothermal well.
6. The heat exchange system of claim 1,
the heat carrier is softened water or a heat transfer medium.
7. The heat exchange system of claim 1,
the upper part of the geothermal well comprises an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe, the outer pipe is connected with the micro heat pipe device main body, and the inner pipe is connected with the micro heat pipe device inner pipe;
the outer pipe is a heat preservation pipe, and the inner pipe is a heat insulation pipe;
and cement is adopted to fix the well between the external heat-insulating layer of the outer pipe and the wall of the geothermal well.
8. The heat exchange system of claim 1,
and a device bottom buckle is arranged at the bottom of the bottommost micro heat pipe device in the geothermal well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921617704.8U CN210624982U (en) | 2019-09-26 | 2019-09-26 | Geothermal well micro heat pipe heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921617704.8U CN210624982U (en) | 2019-09-26 | 2019-09-26 | Geothermal well micro heat pipe heat exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210624982U true CN210624982U (en) | 2020-05-26 |
Family
ID=70752004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921617704.8U Expired - Fee Related CN210624982U (en) | 2019-09-26 | 2019-09-26 | Geothermal well micro heat pipe heat exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210624982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486962A (en) * | 2019-09-26 | 2019-11-22 | 王鹏 | Geothermal well micro heat pipe heat-exchanger rig and system |
| CN112066445A (en) * | 2020-08-31 | 2020-12-11 | 东北石油大学 | Heating system for exploiting terrestrial heat by combining waste oil well with heat pump |
-
2019
- 2019-09-26 CN CN201921617704.8U patent/CN210624982U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486962A (en) * | 2019-09-26 | 2019-11-22 | 王鹏 | Geothermal well micro heat pipe heat-exchanger rig and system |
| CN112066445A (en) * | 2020-08-31 | 2020-12-11 | 东北石油大学 | Heating system for exploiting terrestrial heat by combining waste oil well with heat pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018014607A1 (en) | Combined cooling heating power diaphragm wall apparatus and construction method therefor | |
| WO2018014604A1 (en) | Cast-in-place pile apparatus for combined cooling, heat and power generation and construction method therefor | |
| WO2018014606A1 (en) | Pcc pile apparatus for combined cooling, heat and power generation and manufacturing method therefor | |
| CN101696829A (en) | Method for remotely transferring and storing geothermal energy, device and application thereof | |
| CN210624982U (en) | Geothermal well micro heat pipe heat exchange system | |
| CN210374724U (en) | Heat exchanger in middle-deep geothermal heat exchange well | |
| CN209084871U (en) | A kind of heat exchange of mid-deep strata underground heat well, heating system | |
| CN209893671U (en) | High-efficient geothermal utilization system based on closed loop heat medium pipe | |
| CN112268474A (en) | Geothermal energy extraction device and extraction method | |
| CN108322096A (en) | A kind of underground heat method for generating electricity by utilizing temperature difference and system | |
| CN107477895A (en) | Mid-deep strata underground heat bore hole heat exchanger | |
| CN214371027U (en) | Heat exchange sleeve device for efficiently exploiting geothermal resources and geothermal single well system | |
| CN202692304U (en) | Vertical buried pipe type ground source heat pump cooling water air conditioning system | |
| CN207540178U (en) | Regenerative heat exchanger in mid-deep strata geothermal well | |
| CN106813411B (en) | Waste geothermal well recycling system and construction method thereof | |
| CN110761857B (en) | Geothermal ladder lifting device | |
| CN211695477U (en) | High-efficient geothermal well structure | |
| CN210564685U (en) | Geothermal ladder lifting device | |
| CN209263397U (en) | A kind of mid-deep strata geothermal well takes heat not fetch water type high-performance heat exchanger | |
| CN215598176U (en) | High-efficient heat transfer device of soil source heat pump | |
| CN206683260U (en) | Useless geothermal well reutilization system | |
| CN210663424U (en) | Hot dry rock underground heat exchange equipment | |
| CN213714054U (en) | Geothermal energy extraction element | |
| CN209960790U (en) | Efficient geothermal utilization system based on solid heat conduction | |
| CN211120078U (en) | Vertical pipe-laying heat exchanger of ground source heat pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 Termination date: 20210926 |