CN215108890U - Test platform for closed shaft circulating heat exchange system - Google Patents
Test platform for closed shaft circulating heat exchange system Download PDFInfo
- Publication number
- CN215108890U CN215108890U CN202022485057.9U CN202022485057U CN215108890U CN 215108890 U CN215108890 U CN 215108890U CN 202022485057 U CN202022485057 U CN 202022485057U CN 215108890 U CN215108890 U CN 215108890U
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- CN
- China
- Prior art keywords
- heat
- pump
- circulating pump
- heat exchange
- test platform
- 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
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- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 238000012546 transfer Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004964 aerogel Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Images
Classifications
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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
-
- 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 provides a test platform of a circulation heat exchange system of a closed shaft, wherein a sleeve extends to the underground, and an inner pipe column is arranged in the sleeve; the outlet of the inner pipe column is connected with the inlet of a circulating pump A, the outlet of the circulating pump A is connected with the inlet of a heat source side of a heat pump, the outlet of a load side of the heat pump is connected with a circulating pump B, the outlet of the circulating pump B is connected with the inlet of a cooling system, and the outlet of the cooling system is connected with the heat pump; has the advantages that: the utility model discloses the heat transfer ability in the pit shaft under the different operating condition of research, real-time supervision data, the decay of the power of getting heat after verifying the operation provides comprehensive accurate test data for circulation heat transfer technique; verifying the heat insulation and heat preservation capability and the operation effect of different types of inner pipe columns, and obtaining the economic and performance optimization by considering the material and the manufacturing cost; verifying the heat exchange quantity under different circulation flows to form a curve of the change rule of the heat exchange quantity along with the flow; and adjusting the temperature of the circulating liquid entering the well, verifying the heat taking condition of the circulating liquid in the well at different temperatures entering the well, and providing reference for later-stage ground matching of the heat pump.
Description
Technical Field
The utility model belongs to the technical field of the geothermal exploitation technique and specifically relates to a airtight pit shaft circulation heat transfer system test platform is related to.
Background
The geothermal energy generally refers to the heat energy which can be released by the earth and is green and clean energy, and volcanic eruption, surface hot springs and high-temperature or medium-temperature underground water indicate that huge heat energy is contained in the earth. The geothermal energy is stored underground, is not influenced by climatic conditions, can be used as basic load energy and peak load energy, has the characteristics of low cost, small occupied area, good stability and the like, and has development potential compared with other renewable energy sources.
At present, the geothermal resources in the middle and deep layers mainly adopt a mining and filling type hydrothermal mining technology, and a water mining well and a recharging well are matched at the same time. The current policy requires the produced water to be completely recharged, and the pressurizing recharging mode adopted in partial areas has poor economic benefit; during exploration and development, due to unclear knowledge of a heat reservoir, the condition that the geothermal well drills out a dry well happens occasionally.
In the closed shaft circulation heat exchange system, the shaft is sealed, and liquid circulates in the fully closed system. The method is similar to the process of back flushing of oil wells and water wells, cold water is injected into the annular space between the casing and the heat insulation pipe in the running process, the cold water is heated and heated in the downward flowing process, and when the water flows to the bottom of a shaft, the water enters the heat insulation inner pipe to rise and returns to the ground, so that the circulation is completed. After the hot water returns to the ground, the temperature is continuously raised through the heat pump unit for heating of the building, and the cooled circulating water enters the underground heat exchange circulation again to realize heat taking and water non-taking.
In order to demonstrate whether the system can meet the heat supply requirement and the change condition of the outlet water temperature along with time, the operation condition of the system under different parameters such as injection temperature, flow and the like is obtained, so that the optimal operation parameter of the system is obtained, and the maximum heat supply capacity is obtained by matching with a proper heat pump unit.
Disclosure of Invention
An object of the utility model is to solve prior art not enough, and provide an airtight pit shaft circulation heat transfer system test platform.
The utility model discloses new technical scheme is: a test platform for a circulation heat exchange system of a closed shaft comprises a sleeve, an inner pipe column, a circulation pump A, a circulation pump B, a frequency converter A, a frequency converter B, a heat pump and a cooling system, wherein the sleeve extends to the underground; the inner tube column export pass through pipeline and circulating pump A access connection, and circulating pump A is connected with converter A through the cable, circulating pump A export and heat pump heat source side access connection, heat pump load side exit linkage have circulating pump B, and circulating pump B passes through the cable and is connected with converter B, circulating pump B export and cooling system access connection, cooling system exit connection heat pump.
The inner pipe column is an inner lining oil pipe or a polyethylene pipe or a heat insulation pipe.
The heat insulation material of the heat insulation pipe is foamed polyurethane or glass fiber or aerogel.
The sleeve is made of steel.
The cooling system is an air cooling system.
And the circulating pump A and the circulating pump B are variable frequency water pumps.
One side of the heat pump is a heat source side circulation, and the other side of the heat pump is a load side circulation.
The utility model has the advantages that: the utility model discloses the heat transfer ability in the pit shaft under the different operating condition of research, real-time supervision data, the decay of the power of getting heat after verifying the operation provides comprehensive accurate test data for circulation heat transfer technique; verifying the heat insulation and heat preservation capability and the operation effect of different types of inner pipe columns, and obtaining the economic and performance optimization by considering the material and the manufacturing cost; verifying the heat exchange quantity under different circulation flows to form a curve of the change rule of the heat exchange quantity along with the flow; and adjusting the temperature of the circulating liquid entering the well, verifying the heat taking condition of the circulating liquid in the well at different temperatures entering the well, and providing reference for later-stage ground matching of the heat pump.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: wherein: the device comprises a casing 1, an inner pipe column 2, a circulating pump A3, a frequency converter A4, a heat pump 5, a circulating pump B6, a frequency converter B7 and a cooling system 8.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A test platform for a closed shaft circulation heat exchange system comprises a casing 1, an inner pipe column 2, a circulation pump A3, a circulation pump B6, a frequency converter A4, a frequency converter B7, a heat pump 5 and a cooling system 8, wherein the casing 1 extends to the underground, the inner pipe column 2 is installed in the casing 1, and an annulus is formed between the inner pipe column 2 and the casing 1; 2 exports of inner tube column pass through pipeline and circulating pump A3 access connection, and circulating pump A3 is connected with converter A4 through the cable, circulating pump A3 export and the 5 heat source side access connection of heat pump, 5 load side exit linkage of heat pump have circulating pump B6, and circulating pump B6 passes through the cable and is connected with converter B7, circulating pump B6 export and 8 access connections of cooling system, 8 exit connection heat pump 5 of cooling system.
The inner pipe column 2 is an inner lining oil pipe or a polyethylene pipe or a heat insulation pipe.
The heat insulation material of the heat insulation pipe is foamed polyurethane or glass fiber or aerogel.
The sleeve 1 is a steel pipe.
The cooling system 8 is an air cooling system.
And the circulating pump A3 and the circulating pump B6 are variable-frequency water pumps.
One side of the heat pump 5 is a heat source side circulation, and the other side of the heat pump 5 is a load side circulation.
Circulating liquid enters an annulus between the casing 1 and the inner tubular column 2 from a wellhead, the circulating liquid can be water or other heat exchange media, the circulating liquid absorbs heat in the annulus, the circulating liquid flows to the bottom of the well and enters the inner tubular column 2, and the inner tubular column 2 consists of a heat insulation layer; circulating liquid flows to an outlet of the inner pipe column 2 and then enters the heat pump 5 through a circulating pump A3, the temperature of the circulating liquid drops after the heat pump 5 extracts heat, and the circulating liquid flows back to a wellhead and enters an annular space between the sleeve 1 and the inner pipe column 2 to complete circulation; the heat pump 5 uses the extracted heat for heating the circulating liquid on the other side, the heated circulating liquid enters the cooling system 8 through the circulating pump B6, and flows back to the heat pump 5 again after being cooled, so that the circulation on the other side is completed.
Claims (7)
1. The utility model provides a closed pit shaft circulation heat transfer system test platform, includes sleeve pipe (1), inner tube column (2), circulating pump A (3), circulating pump B (6), converter A (4), converter B (7), heat pump (5) and cooling system (8), its characterized in that: the casing (1) extends to the underground, an inner pipe column (2) is installed in the casing (1), and an annulus is formed between the inner pipe column (2) and the casing (1); inner tube post (2) export pass through pipeline and circulating pump A (3) access connection, and circulating pump A (3) are connected with converter A (4) through the cable, circulating pump A (3) export and heat pump (5) heat source side access connection, heat pump (5) load side exit connection have circulating pump B (6), and circulating pump B (6) are connected with converter B (7) through the cable, circulating pump B (6) export and cooling system (8) access connection, cooling system (8) exit connection heat pump (5).
2. The test platform of a closed shaft heat exchange system according to claim 1, characterized in that: the inner pipe column (2) is an inner lining oil pipe or a polyethylene pipe or a heat insulation pipe.
3. The test platform of the closed shaft circulation heat exchange system according to claim 2, characterized in that: the heat insulation material of the heat insulation pipe is foamed polyurethane or glass fiber or aerogel.
4. The test platform of a closed shaft heat exchange system according to claim 1, characterized in that: the sleeve (1) is a steel pipe.
5. The test platform of a closed shaft heat exchange system according to claim 1, characterized in that: the cooling system (8) is an air cooling system.
6. The test platform of a closed shaft heat exchange system according to claim 1, characterized in that: and the circulating pump A (3) and the circulating pump B (6) are variable-frequency water pumps.
7. The test platform of a closed shaft heat exchange system according to claim 1, characterized in that: one side of the heat pump (5) is a heat source side circulation, and the other side of the heat pump (5) is a load side circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485057.9U CN215108890U (en) | 2020-11-02 | 2020-11-02 | Test platform for closed shaft circulating heat exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485057.9U CN215108890U (en) | 2020-11-02 | 2020-11-02 | Test platform for closed shaft circulating heat exchange system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215108890U true CN215108890U (en) | 2021-12-10 |
Family
ID=79262059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022485057.9U Expired - Fee Related CN215108890U (en) | 2020-11-02 | 2020-11-02 | Test platform for closed shaft circulating heat exchange system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215108890U (en) |
-
2020
- 2020-11-02 CN CN202022485057.9U patent/CN215108890U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |