CN201909483U - Induced convection device for extracting terrestrial heat through underground heat exchange - Google Patents
Induced convection device for extracting terrestrial heat through underground heat exchange Download PDFInfo
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- CN201909483U CN201909483U CN2010206854525U CN201020685452U CN201909483U CN 201909483 U CN201909483 U CN 201909483U CN 2010206854525 U CN2010206854525 U CN 2010206854525U CN 201020685452 U CN201020685452 U CN 201020685452U CN 201909483 U CN201909483 U CN 201909483U
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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
An induced convection device for extracting terrestrial heat through underground heat exchange mainly comprises a convection accelerating tube (1), a notched sleeve (2) and an underground U-shaped heat exchanger (3), and is characterized in that the convection accelerating tube (1) and the underground U-shaped heat exchanger (3) are arranged in the notched sleeve (2) and form an integral structure, wherein the convection accelerating tube (1) is a through tube with two opened ends, a plurality of small water outlets (11) are formed at the upper end of the through tube, a plurality of small water inlets (12) are formed at the lower end of the through tube, the underground U-shaped heat exchanger (3) is arranged on the inner side of the convection accelerating tube (1), the notched sleeve (2) is provided with a tank structure with a sealed bottom and an opened top, a plurality of opening holes (21) are arranged on the tube wall at the lower part of the notched sleeve (2), the upper top end of the convection accelerating tube (1) exceeds the top of the notched sleeve (2), the lower bottom end of the convection accelerating tube (1) is close to the bottom of the notched sleeve (2), the top end of the underground U-shaped heat exchanger (3) exceeds the top of the notched sleeve (2), and the bottom of the underground U-shaped heat exchanger (3) is close to the bottom of the notched sleeve (2), therefore, the design purpose is achieved.
Description
Technical field
The utility model relates to the extraction element of underground heat, and especially underground heat exchange extracts the induced convection device of underground heat.
Background technology
Since the eighties of last century early seventies, along with the exhaustive exploitation of non-renewable energy resources such as oil, coal, caused the extreme shortage of the energy, the development and use new forms of energy, especially regenerative resource is more and more urgent, and geothermal energy receives publicity day by day as a kind of new forms of energy with wide DEVELOPMENT PROSPECT.Geothermal energy is directly used in heating, refrigeration, medical bathing and various forms of industrial or agricultural more in large quantities with hot except being used for generating, and aquaculture etc.directly utilize in the country of underground heat more than 80 in the world, the ability that China directly utilizes device thermally to adopt heat has occupied global first.
Geothermal energy means the heat energy that is stored in underground dry saturated steam, hot water and the hot dry rock.Though the easiest development and use technically of hot dry rock resource, the quantity survey of having found only are 1/20th of thermal water resource.On the other hand,, do not extract the mature technology of this energy, yet do not explore to determine where to have available containing on a large scale though may contain the heat energy that huge amount is arranged in the hot dry rock.Therefore, the development priority of geothermal energy is placed in the development and use based on the geothermal energy resources of hot water.
Geothermal energy resources based on hot water are divided by temperature, can be divided into three types of high temperature (＞150 ℃), middle temperature (90～150 ℃), low temperature (＜90 ℃).China is a country based on middle low-temperature geothermal resource, and there is a problem in the exploitation utilization of middle low-temperature geothermal resource, promptly cryogenically hot well can not directly form steam geothermal energy is taken out of, it is to adopt the underground heat exchange apparatus to extract underground heat that traditional underground heat exploitation utilizes, the principle of ground heat exchanger is the fluid in the heat exchanger, carry out heat exchange with the GEOTHERMAL WATER that flows out from the water-bearing layer in the well in the mode of free convection, and the heat exchanger effectiveness of free convection is lower, and the cost height, can not satisfy people's demand.
Summary of the invention
The purpose of this utility model is to develop a kind of existing low problem of equipment investment height, the thermal efficiency of extracting geothermal device that solves, for ground heat exchanger increases the convection current accelerating tube, form the induced convection of heat transferring medium and GEOTHERMAL WATER, cost is low, the heat exchange efficiency height, the underground heat exchange that environment is not had any pollution extracts the induced convection device of underground heat.
The utility model is achieved through the following technical solutions:
The utility model underground heat exchange extracts the induced convection device of underground heat, mainly by the convection current accelerating tube, split thimble and underground U type heat exchanger are formed, it is characterized in that: convection current accelerating tube and underground U type heat exchanger are arranged in the split thimble, form integral structure, wherein, the convection current accelerating tube is the siphunculus of both ends open, the siphunculus upper end is formed with some ostium excurrenses, the siphunculus lower end is formed with some water inlet apertures, underground U type heat exchanger is in the inboard of convection current accelerating tube, split thimble is the bottom and shuts, open-topped groove structure, the bottom tube wall of split thimble has plurality of opening, split thimble adopts metal material to make, the caliber of convection current accelerating tube is half of split thimble interior diameter, the caliber of underground U-shaped heat exchanger is 1/4th of a split thimble interior diameter, the last top of convection current accelerating tube exceeds the top of split thimble, the following bottom of convection current accelerating tube is near the bottom of split thimble, the top of underground U type heat exchanger exceeds the top of split thimble, the bottom of underground U type heat exchanger reaches purpose of design near the bottom of split thimble.
In use, the utility model integral body is inserted in the geothermal well, the split thimble bottom is the hot well bottom closely, level is exposed on split thimble top, standing level is higher than the ostium excurrens of convection current accelerating tube upper end, the external working media input pipe of underground U type heat exchanger one end, working media input pipe end is provided with the increase pump, between booster pump and underground U type heat exchanger, be provided with check valve, the external working media efferent duct of the underground U type heat exchanger other end, working media output pipe end is provided with the low-temperature receiver heat-exchange device, and then and increase pump and connect, form the enclosed circulatory system, working media adopts lower boiling material, GEOTHERMAL WATER is under the pressure differential effect, enter in the convection current accelerating tube from convection current accelerating tube water inlet aperture, and in the convection current accelerating tube, progressively rise, after rising to certain altitude, GEOTHERMAL WATER is gushed out from the ostium excurrens of convection current accelerating tube, the GEOTHERMAL WATER of gushing out is past current downflow under the effect of gravity, toward current downflow the time, carry out heat exchange with the working media that enters into underground U type heat exchanger, this moment, the heat exchange method of GEOTHERMAL WATER and working media was an induced convection, the relative free convection of heat exchanger effectiveness is higher, working media is vaporization after the heat that absorbs GEOTHERMAL WATER, and rise along the other end pipeline of underground U type heat exchanger, arrive the low-temperature receiver heat-exchange device on ground, steam state working media condensation liquefaction release heat, the working media of liquefaction pumps into underground U type heat exchanger again and GEOTHERMAL WATER is carried out heat exchange, so continuous circulation just forms the system that a underground heat exchange extracts underground heat, reaches purpose of design.
GEOTHERMAL WATER enters from the water inlet aperture of convection current accelerating tube, in the convection current accelerating tube, rise and flow out from the ostium excurrens of upper end, the water inlet aperture that GEOTHERMAL WATER is returned the bottom again forms induced convection, make quantity of heat production flow disturbance is increased of U-shaped heat exchanger because of GEOTHERMAL WATER, experiment shows that for the well of low-permeability, heat accumulation is very important, be provided with the effect that the convection current accelerating tube can play increases heat accumulation this moment, thereby also increased astable quantity of heat production.
Induced convection is meant the heat transfer phenomenon that forces fluid to flow and produce along heating surface by on-mechanical effects such as artificial modes; Free convection is the difference that causes fluid particle density owing to the difference of fluid internal temperature, the lighter is floated and weight person's sinking, and free convection will be considered the influence of fluid buoyancy.Convection heat transfer' heat-transfer by convection is that the macroscopic view of fluid flows and a kind of heat transfer type of causing, and induced convection is because under the influence of external factor, and two kinds of fluids that are used in heat transfer produce mobile relatively, so heat transfer efficiency is relative and free convection is higher.
The utlity model has following advantage:
1, via enforcement of the present utility model, simple in structure, compact, make full use of space resources.
2, via enforcement of the present utility model, low-temperature geothermal resource in extracting, the heat exchanger effectiveness of GEOTHERMAL WATER and working media is higher.
3, via enforcement of the present utility model, utilize reproducible geothermal energy resources, in the whole system process, there is not the discharging of pollutant, meet the policy of national energy-saving and emission-reduction.
4, via enforcement of the present utility model, owing to there is not groundwater abstraction, can keep phreatic complete closed, do not need to consider whether underground water has sufficient supply and phreatic dissipation.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing, but not as to qualification of the present utility model.
Fig. 1 is a structural principle schematic diagram of the present utility model.
In the drawings, 1 convection current accelerating tube, 11 ostium excurrenses, 12 water inlet apertures, 2 split thimbles, 21 perforates, 3 underground U type heat exchangers, 4 standing levels
The specific embodiment
Shown in Fig. 1, the utility model underground heat exchange extracts the induced convection device of underground heat, mainly by convection current accelerating tube 1, split thimble 2 and underground U type heat exchanger 3 are formed, it is characterized in that: convection current accelerating tube 1 and underground U type heat exchanger 3 are arranged in the split thimble 2, form integral structure, wherein, convection current accelerating tube 1 is the siphunculus of both ends open, the siphunculus upper end is formed with some ostium excurrenses 11, the siphunculus lower end is formed with some water inlet apertures 12, underground U type heat exchanger 3 is in the inboard of convection current accelerating tube 1, split thimble 2 is the bottom and shuts, open-topped groove structure, the bottom tube wall of split thimble 2 has plurality of opening 21, split thimble 2 adopts metal material to make, the caliber of convection current accelerating tube 1 is half of split thimble 2 interior diameters, the caliber of underground U-shaped heat exchanger 3 is 1/4th of split thimble 2 interior diameters, the last top of convection current accelerating tube 1 exceeds the top of split thimble 2, the following bottom of convection current accelerating tube 1 is near the bottom of split thimble 2, the top of underground U type heat exchanger 3 exceeds the top of split thimble 2, and the bottom of underground U type heat exchanger 3 reaches purpose of design near the bottom of split thimble 2.
In Fig. 1, direction shown in the arrow in the convection current accelerating tube 1 is the water (flow) direction of GEOTHERMAL WATER, and direction is the direction of motion of working media shown in the arrow in the underground U type heat exchanger 3.
In use, the utility model integral body is inserted in the geothermal well, split thimble 2 bottoms are the hot well bottom closely, standing level 4 is exposed on split thimble 2 tops, standing level 4 is higher than the ostium excurrens 11 of convection current accelerating tube 1 upper end, the external working media input pipe of underground U type heat exchanger 3 one ends, working media input pipe end is provided with the increase pump, between booster pump and underground U type heat exchanger 3, be provided with check valve, the external working media efferent duct of underground U type heat exchanger 3 other ends, working media output pipe end is provided with the low-temperature receiver heat-exchange device, and then and increase pump and connect, form the enclosed circulatory system, working media adopts lower boiling ethylene glycol, GEOTHERMAL WATER is under the pressure differential effect, enter in the convection current accelerating tube 1 from convection current accelerating tube 1 water inlet aperture 12, and in convection current accelerating tube 1, progressively rise, after rising to certain altitude, GEOTHERMAL WATER is gushed out from the ostium excurrens 11 of convection current accelerating tube 1, the GEOTHERMAL WATER of gushing out is past current downflow under the effect of gravity, toward current downflow the time, carry out heat exchange with the working media ethylene glycol that enters into underground U type heat exchanger 3, this moment, the heat exchange method of GEOTHERMAL WATER and working media ethylene glycol was an induced convection, the relative free convection of heat exchanger effectiveness is higher, working media ethylene glycol is vaporization after the heat that absorbs GEOTHERMAL WATER, and rise along the other end pipeline of underground U type heat exchanger 3, arrive the low-temperature receiver heat-exchange device on ground, steam state working media ethylene glycol condensation liquefaction release heat, the working media ethylene glycol of liquefaction pumps into underground U type heat exchanger 3 again and carries out heat exchange with GEOTHERMAL WATER, so continuous circulation just forms the system that a underground heat exchange extracts underground heat, reaches purpose of design.
Enforcement of the present utility model, simple in structure, compact, make full use of space resources, cost is low, heat exchange efficiency height, environmental protection, the underground heat exchange of the hot well induced convection device field of extracting underground heat cryogenically in being widely used in.
Claims (4)
1. underground heat exchange extracts the induced convection device of underground heat, mainly by convection current accelerating tube (1), split thimble (2) and underground U type heat exchanger (3) are formed, it is characterized in that: convection current accelerating tube (1) and underground U type heat exchanger (3) are arranged in the split thimble (2), underground U type heat exchanger (3) forms integral structure in the inboard of convection current accelerating tube (1).
2. underground heat exchange according to claim 1 extracts the induced convection device of underground heat, it is characterized in that described convection current accelerating tube (1) is the siphunculus of both ends open, the siphunculus upper end is formed with some ostium excurrenses (11), the siphunculus lower end is formed with some water inlet apertures (12), and the following bottom of convection current accelerating tube (1) is near the bottom of split thimble (2).
3. underground heat exchange according to claim 1 extracts the induced convection device of underground heat, it is characterized in that described split thimble (2) is the bottom and shuts, open-topped groove structure, and the bottom tube wall of split thimble (2) has plurality of opening (21).
4. underground heat exchange according to claim 1 extracts the induced convection device of underground heat, it is characterized in that the bottom of the bottom of described underground U type heat exchanger (3) near split thimble (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206854525U CN201909483U (en) | 2010-12-28 | 2010-12-28 | Induced convection device for extracting terrestrial heat through underground heat exchange |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206854525U CN201909483U (en) | 2010-12-28 | 2010-12-28 | Induced convection device for extracting terrestrial heat through underground heat exchange |
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| CN201909483U true CN201909483U (en) | 2011-07-27 |
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| CN2010206854525U Expired - Fee Related CN201909483U (en) | 2010-12-28 | 2010-12-28 | Induced convection device for extracting terrestrial heat through underground heat exchange |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265242A (en) * | 2014-08-09 | 2015-01-07 | 周成杰 | Terrestrial heat extraction method of geothermal well |
| CN106642766A (en) * | 2017-01-22 | 2017-05-10 | 浙江陆特能源科技股份有限公司 | Closed type inner well circulating heat exchange tube |
| CN107062665A (en) * | 2017-04-18 | 2017-08-18 | 长沙紫宸科技开发有限公司 | A kind of carbon dioxide energy storage equipment of accumulation geothermal energy |
| CN109612323A (en) * | 2018-12-06 | 2019-04-12 | 湖南达道新能源开发有限公司 | A kind of geothermal well deep hole heat exchanger |
| CN109668344A (en) * | 2018-12-06 | 2019-04-23 | 湖南达道新能源开发有限公司 | A kind of network-in-dialing formula geothermal energy quarrying apparatus |
-
2010
- 2010-12-28 CN CN2010206854525U patent/CN201909483U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265242A (en) * | 2014-08-09 | 2015-01-07 | 周成杰 | Terrestrial heat extraction method of geothermal well |
| CN104265242B (en) * | 2014-08-09 | 2016-09-07 | 周成杰 | The ground thermal extraction method of geothermal well |
| CN106642766A (en) * | 2017-01-22 | 2017-05-10 | 浙江陆特能源科技股份有限公司 | Closed type inner well circulating heat exchange tube |
| CN107062665A (en) * | 2017-04-18 | 2017-08-18 | 长沙紫宸科技开发有限公司 | A kind of carbon dioxide energy storage equipment of accumulation geothermal energy |
| CN109612323A (en) * | 2018-12-06 | 2019-04-12 | 湖南达道新能源开发有限公司 | A kind of geothermal well deep hole heat exchanger |
| CN109668344A (en) * | 2018-12-06 | 2019-04-23 | 湖南达道新能源开发有限公司 | A kind of network-in-dialing formula geothermal energy quarrying apparatus |
| CN109668344B (en) * | 2018-12-06 | 2020-09-25 | 湖南达道新能源开发有限公司 | Network communication type geothermal energy exploitation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GANZI KANGSHENG TERRESTRIAL HEAT CO., LTD. Free format text: FORMER OWNER: XU YI Effective date: 20110921 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 610072 CHENGDU, SICHUAN PROVINCE TO: 626000 GANZI TIBETAN AUTONOMOUS PREFECTURE, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110921 Address after: 626000, C4 building, Cha Ma Ancient Road, Dongguan New Town, Kangding County, Ganzi Tibetan Autonomous Prefecture, Sichuan Province Patentee after: GANZI KANGSUN GEOTHERMAL DEVELOPMENT CO., LTD. Address before: 610072, No. 2, building 1, building 1, building 16, Jinsha Road, 2, Chengdu, Sichuan, Jinniu District Patentee before: Xu Yi |
|
| DD01 | Delivery of document by public notice |
Addressee: GANZI KANGSUN GEOTHERMAL DEVELOPMENT CO., LTD. Document name: Notification of Termination of Patent Right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20181228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |