CN211146942U - Recharge system after geothermal water utilization - Google Patents
Recharge system after geothermal water utilization Download PDFInfo
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- CN211146942U CN211146942U CN201922079556.5U CN201922079556U CN211146942U CN 211146942 U CN211146942 U CN 211146942U CN 201922079556 U CN201922079556 U CN 201922079556U CN 211146942 U CN211146942 U CN 211146942U
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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
The back-filling system after geothermal water is utilized comprises a water storage tank, a back-filling pipe, a back-filling sieve pipe and a back-filling well which is formed by adopting a three-opening drilling mode, wherein the lower end of the back-filling well extends into a hot water storage aquifer, a first-opening-section well cementation sleeve, a second-opening-section well cementation sleeve and a three-opening-section well cementation sieve pipe are sequentially arranged in the back-filling well from top to bottom, the back-filling pipe is arranged inside the first-opening-section well cementation sleeve and the second-opening-section well cementation sleeve, the back-filling sieve pipe is arranged inside the three-opening-section well cementation sieve pipe, a support for supporting and fixing the back-filling pipe is arranged on the ground, a water inlet pipe joint is arranged at the top of the water storage tank. The utility model discloses the principle science, simple structure guarantees the normal clear of the operation of recharging under adopting the action of gravity to can monitor and whether appear blockking up at the recharging in-process, take debris such as silt out immediately after blockking up and wash the well, can also raise the efficiency and carry out the operation of pressure boost recharging.
Description
Technical Field
The utility model belongs to the technical field of geothermal energy utilizes, concretely relates to geothermal water utilizes back irrigation system.
Background
Geothermal energy is a clean and recyclable energy source, and underground water is widely used as a geothermal carrier in industries such as industry, agriculture, breeding, tourism, life and the like. The hot water extracted from the deep geothermal well needs to be recharged into the thermal storage aquifer through the recharging well after being utilized. At present, the conventional self-flowing recharging mode cannot meet the requirement of one hundred percent recharging, geothermal water is mainly subjected to a pressurizing recharging mode in the recharging process, the problems of increasing recharging pressure year by year and reducing recharging efficiency due to pressurizing recharging can be solved, the structural damage of a hot water storage aquifer can be caused due to long-term pressurizing forced recharging, and finally the recharging well is blocked and difficult to recharge due to long-term pressurizing forced recharging.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the weak point among the prior art, provide a recharge system after geothermal water that the recharge is smooth and easy, difficult jam, can carry out the pumping back well-flushing to the recharge well utilizes.
In order to solve the technical problem, the utility model adopts the following technical scheme: the system comprises a water storage tank, a recharge pipe, a recharge sieve pipe and a recharge well which is arranged in a three-opening drilling mode, wherein the lower end of the recharge well extends into a hot water storage layer, a first-opening-section well cementation sleeve, a second-opening-section well cementation sleeve and a three-opening-section well cementation sieve pipe are sequentially arranged in the recharge well from top to bottom, the water storage tank is arranged on the ground and is adjacent to the recharge well, the lower end of the recharge pipe is connected with the upper end of the recharge sieve pipe, the external diameters of the recharge pipe and the recharge sieve pipe are equal and are smaller than the internal diameter of the three-opening-section well cementation sieve pipe, the recharge pipe is arranged in the first-opening-section well cementation sleeve and the second-opening-section well cementation sleeve, the recharge sieve pipe is arranged in the three-opening-section well cementation sieve pipe, the three-opening-section sieve pipe well cementation sleeve and the recharge sieve pipe are both positioned in the hot water storage layer, a bracket for supporting and fixing the recharge pipe is, the irrigation pipe is provided with a first valve.
Still include the four-way pipe, water injection pipe and back pumping pipe, the first port of four-way pipe is connected with the last port of back pumping pipe, the second port of four-way pipe and the exit linkage of the pipe of watering, the third port of four-way pipe and the exit linkage of water injection pipe, the fourth port of four-way pipe and the access connection of back pumping pipe, the import of water injection pipe stretches into under the surface of water in the storage water tank, second valve and water injection pump have set gradually along the rivers direction on the water injection pipe, third valve and back pumping pump have set gradually along the rivers direction on the back pumping pipe.
The inside of the water inlet pipe joint is provided with a replaceable filter screen.
The upper end of the recharging pipe is provided with a first pressure gauge.
The subaerial air pump that is provided with, the inside annular gasbag of cover outside recharging pipe that is provided with of first section well cementation sheathed tube, the air pump passes through the gas injection pipe to be connected with annular gasbag top, is equipped with the second manometer on the gas injection pipe, and second section well cementation sheathed tube up end mouth department is provided with wireless level sensor.
By adopting the technical scheme, geothermal water is discharged into the water storage tank through the water inlet pipe joint after being utilized, and the arrangement of the filter screen can avoid larger sundries from entering the water storage tank, so that the blocking problem during recharging operation is reduced. When normal recharging is carried out, the first valve is opened, the second valve and the third valve are closed, water in the water storage tank automatically flows into the recharging pipe through the watering pipe, flows downwards into the recharging sieve pipe along the recharging pipe, and is recharged into the hot water storage aquifer through sieve holes in the recharging sieve pipe and sieve holes in the three-section well cementation sieve pipe. In the normal recharging process, the water level in the recharging pipe rises, as the inside of the recharging pipe, the inside of the first-opening section well cementation sleeve and the inside of the second-opening section well cementation sleeve form a communicating pipe structure, the water level can also rise upwards in the second-opening section well cementation sleeve, when the water level contacts the wireless liquid level sensor, the wireless liquid level sensor sends a signal to a control chamber on the ground, a worker immediately starts the air pump, the air pump injects air into the annular air bag through the air injection pipe, the annular air bag expands to plug the space between the first-opening section well cementation sleeve and the recharging pipe, then the first valve is closed, the third valve is opened, the raising pump is started to pump the water in the recharging pipe outwards, as the geothermal water extraction well is not far away from the recharging well, and the pumped thermal water storage layer are the same, when the raising pump pumps the water outwards, the geothermal water near the recharging well flows towards the recharging well, and the lifting pump pumps out impurities such as sludge at the well cementation sieve tube at the three-section of the recharging well until the temperature difference between the water temperature of the water pumped out by the lifting pump and the geothermal water pumped out by the pumping well is not large, the lifting pump and the second valve are closed, the first valve is opened, and the water in the water storage tank continues recharging operation. Simultaneously, the annular air bag is deflated and returns to normal.
When the water inlet speed in the water storage tank is higher than the recharge speed, the liquid level in the water storage tank can rise, the first valve can be closed at the moment, the second valve is opened, the water injection pump is started, the water in the water storage tank is pumped out by the water injection pump and is injected into the recharge pipe, and the recharge efficiency is improved through a pressurizing water injection mode.
Additionally, the utility model discloses a recharge well adopts three open well drilling structures, and recharge well can be for straight well and cluster well, and top-down sets gradually one and opens section well cementation sleeve pipe, two and opens section well cementation sleeve pipes and three section well cementation screen pipes in recharge well, can play good well cementation effect like this, ensures that recharge pipe and three section well cementation screen pipes, two and opens and all have the annular clearance between the section well cementation sleeve pipe, and this kind of linker structure can be used to monitor whether the recharge operation blocks up to carry out the back flush well immediately.
The first pressure gauge is used for monitoring the pressure in the recharging pipe when the water injection pump performs water injection operation; the first pressure gauge is used for monitoring the pressure of the gas injection pipe, and the annular gas bag is prevented from being crushed while sealing of the annular gas bag is ensured.
To sum up, the utility model discloses the principle science, simple structure guarantees the normal clear of the operation of recharging under the adoption action of gravity to can monitor and whether appear blockking up at the recharging in-process, take debris such as silt out immediately after blockking up and wash the well, can also raise the efficiency and carry out pressure boost recharging operation.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, the geothermal water post-utilization recharging system of the utility model comprises a water storage tank 1, a recharging pipe 2, a recharging sieve pipe 3 and a recharging well which is arranged in a three-opening well drilling mode, wherein the lower end of the recharging well extends into a hot water storage aquifer 4, a first-opening section well cementation sleeve 5, a second-opening section well cementation sleeve 6 and a three-opening section well cementation sieve pipe 7 are sequentially arranged in the recharging well from top to bottom, the water storage tank 1 is arranged on the ground and is adjacent to the recharging well, the lower end of the recharging pipe 2 is connected with the upper end of the recharging sieve pipe 3, the external diameters of the recharging pipe 2 and the recharging sieve pipe 3 are equal and are smaller than the internal diameter of the three-opening section well cementation sieve pipe 7, the recharging pipe 2 is arranged in the first-opening section well cementation sleeve 5 and the second-opening section well cementation sleeve 6, the recharging sieve pipe 3 is arranged in the three-opening section well cementation sieve pipe 7, the three-opening section well cementation sieve pipe 7 and the recharging sieve pipe, the top of the water storage tank 1 is provided with a water inlet pipe joint 8, the lower side part of the water storage tank 1 is provided with an irrigation pipe 9 connected with the upper end opening of the recharge pipe 2, and the irrigation pipe 9 is provided with a first valve 10.
The utility model discloses still include four-way pipe 11, water injection pipe 13 and pumping back pipe 14, the first port of four-way pipe 11 is connected with the last port of recharging pipe 2, the second port of four-way pipe 11 and the exit linkage of the pipe 9 of watering, the third port of four-way pipe 11 and the exit linkage of water injection pipe 13, the fourth port of four-way pipe 11 and the access connection of pumping back pipe 14, the import of water injection pipe 13 stretches into under the surface of water in the storage water tank 1, follow the rivers direction and set gradually second valve 15 and water injection pump 16 on the water injection pipe 13, pump back pipe 14 and go up along the rivers direction and set gradually third valve 17 and pump 18.
The water inlet pipe joint 8 is internally provided with a replaceable filter screen.
The upper end of the recharging pipe 2 is provided with a first pressure gauge 19.
An air pump 20 is arranged on the ground, an annular air bag 21 sleeved outside the recharge pipe 2 is arranged inside the first-opening-section well cementation sleeve 5, the air pump 20 is connected with the top of the annular air bag 21 through an air injection pipe 22, a second pressure gauge 24 is arranged on the air injection pipe 22, and a wireless liquid level sensor 23 is arranged at the upper port of the second-opening-section well cementation sleeve 6.
The utility model discloses a working process does: geothermal water is discharged into the water storage tank 1 through the water inlet pipe joint 8 after being utilized, and the arrangement of the filter screen can avoid larger sundries from entering the water storage tank 1, so that the blocking problem during recharging operation is reduced. When normal recharging is carried out, the first valve 10 is opened, the second valve 15 and the third valve 17 are closed, water in the water storage tank 1 automatically flows into the recharging pipe 2 through the recharging pipe 9, flows downwards into the recharging sieve pipe 3 along the recharging pipe 2, and is recharged into the hot water storage layer 4 through sieve holes in the recharging sieve pipe 3 and sieve holes in the three-section well cementation sieve pipe 7. In the normal recharging process, the water level in the recharging pipe 2 rises, because the inside of the recharging pipe 2, the inside of the first-opening-section well cementation sleeve 5 and the inside of the second-opening-section well cementation sleeve 6 form a communicating pipe structure, the water level can also rise upwards in the second-opening-section well cementation sleeve 6, when the water level contacts the wireless liquid level sensor 23, the wireless liquid level sensor 23 sends a signal to a control chamber on the ground, a worker immediately starts the air pump 20, the air pump 20 injects air into the annular air bag 21 through the air injection pipe 22, the annular air bag 21 expands to plug the space between the first-opening-section well cementation sleeve 5 and the recharging pipe 2, then the first valve 10 is closed, the third valve 17 is opened, the back-pumping pump 18 is started, the back-pumping pump 18 pumps the water in the recharging pipe 2 outwards, because the geothermal water extraction well is not far away from the recharging well, and the recharged hot water-storage layer 4 and the pumped hot water-storage layer 4 are the same water layer, when the back pump 18 pumps water outwards, geothermal water near the extraction well flows to the back well, the back pump 18 pumps out sundries such as sludge and the like at the position of the well cementation screen pipe 7 of the three-section of the back well until the temperature difference between the water temperature of the water pumped by the back pump 18 and the geothermal water pumped by the extraction well is not large, the back pump 18 and the second valve 15 are closed, the first valve 10 is opened, and the water in the water storage tank 1 continues to carry out back filling operation. At the same time, the annular air bag 21 is also deflated and returns to normal.
When the water inlet speed in the water storage tank 1 is higher than the recharge speed, the liquid level in the water storage tank 1 can rise, the first valve 10 can be closed, the second valve 15 is opened, the water injection pump 16 is started, the water in the water storage tank 1 is pumped out by the water injection pump 16 and is injected into the recharge pipe 2, and the recharge efficiency is improved in a pressurization water injection mode.
Additionally, the utility model discloses a recharge well adopts three open well drilling structures, recharge well can be for straight well and cluster well, top-down sets gradually one and opens section well cementation sleeve pipe 5, two open section well cementation sleeve pipes 6 and three open section well cementation screen pipes 7 in recharge well, can play good well cementation effect like this, ensure recharge pipe 2 and three open section well cementation screen pipes 7, two open and all have the annular clearance between the section well cementation sleeve pipe 6, this kind of linker structure can be used to monitor whether the recharge operation blocks up to carry out the backwash well immediately.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; 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 technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. Geothermal water utilizes back system of irritating, its characterized in that: the water storage tank is arranged on the ground and is adjacent to the recharging well, the lower end of the recharging well is connected with the upper end of the recharging sieve tube, the external diameters of the recharging pipe and the recharging sieve tube are equal and are smaller than the internal diameter of the three-section well cementation sieve tube, the recharging pipe is arranged inside the one-section well cementation sleeve and the two-section well cementation sleeve, the recharging sieve tube is arranged inside the three-section well cementation sieve tube, the three-section well cementation sieve tube and the recharging sieve tube are both positioned in the hot water storage layer, a support for supporting and fixing the recharging pipe is arranged on the ground, a water inlet pipe joint is arranged at the top of the water storage tank, a water filling pipe connected with an upper port of the recharging pipe is arranged at the lower side of the water storage tank, the irrigation pipe is provided with a first valve.
2. The geothermal water post-utilization recharge system according to claim 1, wherein: still include the four-way pipe, water injection pipe and back pumping pipe, the first port of four-way pipe is connected with the last port of back pumping pipe, the second port of four-way pipe and the exit linkage of the pipe of watering, the third port of four-way pipe and the exit linkage of water injection pipe, the fourth port of four-way pipe and the access connection of back pumping pipe, the import of water injection pipe stretches into under the surface of water in the storage water tank, second valve and water injection pump have set gradually along the rivers direction on the water injection pipe, third valve and back pumping pump have set gradually along the rivers direction on the back pumping pipe.
3. The geothermal water post-utilization recharge system according to claim 1, wherein: the inside of the water inlet pipe joint is provided with a replaceable filter screen.
4. The geothermal water post-utilization recharge system according to claim 1, wherein: the upper end of the recharging pipe is provided with a first pressure gauge.
5. The geothermal water post-utilization recharge system according to claim 2, wherein: the subaerial air pump that is provided with, the inside annular gasbag of cover outside recharging pipe that is provided with of first section well cementation sheathed tube, the air pump passes through the gas injection pipe to be connected with annular gasbag top, is equipped with the second manometer on the gas injection pipe, and second section well cementation sheathed tube up end mouth department is provided with wireless level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922079556.5U CN211146942U (en) | 2019-11-27 | 2019-11-27 | Recharge system after geothermal water utilization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922079556.5U CN211146942U (en) | 2019-11-27 | 2019-11-27 | Recharge system after geothermal water utilization |
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| CN211146942U true CN211146942U (en) | 2020-07-31 |
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| CN201922079556.5U Active CN211146942U (en) | 2019-11-27 | 2019-11-27 | Recharge system after geothermal water utilization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531927A (en) * | 2021-06-23 | 2021-10-22 | 姚靖榆 | Geothermal well with recharge well |
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2019
- 2019-11-27 CN CN201922079556.5U patent/CN211146942U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531927A (en) * | 2021-06-23 | 2021-10-22 | 姚靖榆 | Geothermal well with recharge well |
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