CN218821073U - Middle-deep geothermal energy collecting and irrigating integrated utilization system - Google Patents
Middle-deep geothermal energy collecting and irrigating integrated utilization system Download PDFInfo
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- CN218821073U CN218821073U CN202223333714.3U CN202223333714U CN218821073U CN 218821073 U CN218821073 U CN 218821073U CN 202223333714 U CN202223333714 U CN 202223333714U CN 218821073 U CN218821073 U CN 218821073U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention belongs to the technical field of geothermal energy utilization, and particularly discloses a middle-deep geothermal energy collecting and filling integrated utilization system which comprises a production well, a recharging well, a heat exchange system, a heat consumer, a submersible pump, a water distributor, a water collector, a valve, a degassing unit, a geothermal water booster pump and a filtering facility. Compared with the prior art, the degassing device is additionally arranged at the front end of the heat exchange system, the booster pump is additionally arranged after degassing, the burden of the submersible pump is reduced, the heat exchange effect can be improved, meanwhile, recharging is facilitated, meanwhile, the filtering facility is additionally arranged at the front end of the heat exchange system, impurities in geothermal water are reduced, recharging is facilitated, and meanwhile, the quality of inlet water of the heat exchanger of the heat exchange system is improved; in addition, the production well and the recharge well can be interchanged at any time, and in non-heating seasons, when the recharge well is pumped back, the pumped back water is filtered and recharged to the production well, so that the pumped back water is prevented from being discharged outside.
Description
Technical Field
The invention relates to the technical field of geothermal energy utilization, in particular to a middle-deep geothermal energy collecting and irrigating integrated utilization system.
Background
Geothermal water is natural hot water obtained from deep heat storage, and can be used for heating. The geothermal heating is a clean and environment-friendly heating mode and a good measure for energy conservation and emission reduction, and has the special advantages of fuel saving and no environmental pollution compared with heating by other heat sources, so in areas with excellent geothermal resources, geothermal resources are effectively developed and utilized as alternative new energy, geothermal cascade utilization is commonly used, but the current geothermal water cascade utilization has the following technical problems:
1. in the current geothermal gradient utilization process, a vacuum degassing device is not arranged, only a degassing tank or an exhaust valve is arranged, the degassing effect is poor, dissolved gas is separated out at a plate heat exchanger, the heat exchange efficiency is influenced, and air resistance can be formed during recharging, so that recharging is not facilitated.
2. In the current geothermal gradient utilization process, a recharging and filtering device is arranged at the tail end of a system. The front end of the system is only provided with the cyclone desander, the filtering effect is poor, and the heat exchange efficiency is influenced by the existence of dirt at the plate heat exchanger.
3. In the existing geothermal gradient utilization system, a production well and a recharge well can achieve balanced production and recharge, but cannot achieve production and recharge interchange.
4. In non-heating seasons, the recharge well needs to be pumped, and the prior process flow generally discharges pumped water to waste water resources.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a middle-deep geothermal energy collecting and irrigating integrated utilization system.
In order to achieve the purpose, the invention is implemented according to the following technical scheme:
the invention provides a middle-deep geothermal energy collecting and irrigating integrated utilization system, which comprises a production well, a recharging well, a heat exchange system and a heat consumer, wherein the heat exchange system and the heat consumer are connected with a pipeline through a circulating pump for heat exchange; the immersible pump export is installed and is adopted and irritated the check valve, the water inlet of degasser group is connected to the delivery port of water collector, and the water inlet of geothermal water booster pump is connected to the delivery port of degasser group, and the water inlet of filter equipment is connected to the delivery port of geothermal water booster pump, and filter equipment's delivery port is connected to heat transfer system, and heat transfer system's low temperature tail water passes through the tube coupling to the water knockout drum, and is equipped with the valve on this pipeline.
Furthermore, a submersible pump is arranged in the recharging well, a water outlet of the submersible pump is provided with a pumping and recharging check valve, the water outlet of the submersible pump is respectively connected to the water distributor and the water collector through a second geothermal pipeline, and valves are arranged on the second geothermal pipelines at the water inlet of the water distributor and the water collector.
The second purpose of the invention is to provide a utilization method of a middle-deep geothermal energy collecting and irrigating integrated utilization system, which comprises the following steps:
s1, in a heating season, pumping high-temperature geothermal water in a production well to a water collector through a submersible pump;
s2, allowing the high-temperature geothermal water entering the water collector to flow through a degassing unit, degassing dissolved gas in the geothermal water, conveying the degassed high-temperature geothermal water to a filtering facility through a geothermal water booster pump, filtering impurities in the geothermal water, and conveying the filtered high-temperature geothermal water to a heat exchange system, wherein the heat exchange system exchanges heat with a hot user to realize heating of the hot user;
and S3, conveying the low-temperature tail water subjected to heat exchange by the heat exchange system to a water separator, and then recharging to a recharging well.
Further, still include:
and S4, in non-heating seasons, the recharging well needs to be subjected to pumping treatment, the production well and the recharging well are converted through valves arranged on the water segregator and the water collector, and pumped water is treated by a degassing unit and a filtering facility and then is recharged to the original production well.
Compared with the prior art, the degassing device is additionally arranged at the front end of the heat exchange system, the booster pump is additionally arranged after degassing, the burden of the submersible pump is reduced, the heat exchange effect is improved, meanwhile, recharging is facilitated, meanwhile, the filtering facility is additionally arranged at the front end of the heat exchange system, impurities in geothermal water are reduced, recharging is facilitated, and meanwhile, the quality of inlet water of the heat exchanger of the heat exchange system is improved; in addition, the production well and the recharge well can be interchanged at any time, and in non-heating seasons, when the recharge well is pumped back, the pumped back water is filtered and recharged to the production well, so that the pumped back water is prevented from being discharged outside.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1
As shown in fig. 1, this embodiment specifically discloses a system for integrally utilizing geothermal energy of middle and deep layers,
the system comprises a production well 1, a recharge well 2, a heat exchange system 11 (the heat exchange system adopts heat exchange equipment commonly used in the field, which is not described in the embodiment) and a heat consumer 13, wherein the heat exchange system 11 and the heat consumer 13 are connected with a pipeline through a circulating pump 12 for heat exchange, the production well 1 is provided with a submersible pump 3, a water outlet of the submersible pump 3 is respectively connected to a water distributor 6 and a water collector 5 through a first geothermal pipeline 4, and valves 14 are respectively arranged on the first geothermal pipelines 4 at the water inlets of the water distributor 6 and the water collector 5; the immersible pump 3 export is installed and is adopted and irritate check valve 15, the water inlet of degasser 8 (degasser 8 of this embodiment can directly use the vacuum degasser of purchase on the market is connected to the delivery port of water collector 5 (degasser 8 of this embodiment, its specific structure this embodiment is no longer repeated, its purpose is got rid of the solution gas in the geothermal water, improve heat transfer effect and be favorable to geothermal water recharging), the water inlet of geothermal water booster pump 9 is connected to the delivery port of degasser 8, filtering facilities 10 is connected to the delivery port of geothermal water booster pump 9 (filtering facilities 10 of this embodiment can directly use the water filtration equipment of purchase on the market, its specific structure this embodiment is no longer repeated, its main purpose is to filter the inlet of the dirt that forms after the geothermal water that gets into the heat exchanger with the reduction after degasser), filtering facilities 10's delivery port is connected to heat transfer system 11, heat transfer system 11's low temperature tail water passes through tube coupling to water knockout drum 6, and be equipped with the valve on this pipeline, 14.
In the technical scheme, high-temperature geothermal water is mined and pumped into a water collector 5 through a submersible pump 3 arranged in a production well 1, at the moment, a left valve and a right valve connected to the water collector 5 are opened, a left valve and a middle valve connected to a water separator 6 are kept in an open state, other valves are kept closed, the high-temperature geothermal water in the water collector 5 firstly flows through a degassing unit 8, dissolved gas in the geothermal water is degassed and then is conveyed to a filtering facility 10 through a geothermal water booster pump 9, impurities in the geothermal water are filtered and then conveyed to a heat exchange system 11 for heat exchange; after the geothermal water entering the heat exchange system 11 is subjected to degassing and filtering treatment, the quality of the inlet water is improved, the dirt coefficient of a heat exchanger is reduced, the heat exchange efficiency is improved, and the geothermal water booster pump 9 can overcome the resistance of a filtering facility, so that the lift and the power of a submersible pump are reduced; the low-temperature tail water after heat exchange by the heat exchange system 11 is conveyed to the water collector 6, and the low-temperature tail water of the water collector 6 is re-filled to the re-filling well 2 through the second geothermal pipeline 7 via the submersible pump 3 in the re-filling well 2 (at the moment, the submersible pump does not work, and the low-temperature tail water can be re-filled to the submersible pump along the second geothermal pipeline 7).
The implementation principle of the embodiment is as follows: through increasing degasser at the heat transfer system front end, increase the booster pump after the degasification, reduce the immersible pump burden, can improve the heat transfer effect simultaneously and be favorable to the recharge, increase filtration facility at heat supply circulating system front end simultaneously, reduce the geothermol power aquatic impurity and be favorable to the recharge and improve heat transfer system quality of water of intaking simultaneously.
Example 2
The difference from the embodiment 1 is that a submersible pump 3 is also arranged in the recharging well 2, a water outlet of the submersible pump 3 is provided with a pumping and recharging check valve 15 and is respectively connected to the water separator 6 and the water collector 5 through a second geothermal pipeline 7, and the second geothermal pipelines 7 at the water inlet of the water separator 6 and the water collector 5 are both provided with valves 14; by controlling the opening and closing of the valves 14 on the first geothermal pipeline 4 and the second geothermal pipeline 7 connected with the water separator 6 and the water collector 5, at the moment, the left valve and the middle valve connected with the water collector 5 are opened, the left valve and the right valve connected with the water separator 6 are kept in an open state, and other valves are kept closed, the interchange of the production well 1 and the recharge well 2 can be realized, namely, the recharge well 3 is used as a water supply source, and the production well 1 is used as a recharge well for receiving and recycling.
Example 3
As shown in fig. 1, the present embodiment specifically discloses a utilization method of a middle-deep geothermal energy harvesting and irrigating integrated utilization system, which includes the following steps:
s1, in a heating season, pumping high-temperature geothermal water in a production well 1 to a water collector 5 through a submersible pump 3;
s2, high-temperature geothermal water entering the water collector 5 flows through the degassing unit 8 firstly, after the dissolved gas in the geothermal water is subjected to degassing treatment, the high-temperature geothermal water is conveyed to a filtering facility 10 through a geothermal water booster pump 9, impurities in the geothermal water are filtered and conveyed to a heat exchange system 11, and the heat exchange system 11 exchanges heat with a heat user 13 to realize heating of the heat user 13;
and S3, conveying the low-temperature tail water subjected to heat exchange by the heat exchange system 11 to the water separator 6, and then recharging to the recharging well 2 to finish the integrated utilization of the geothermal energy of the middle and deep layers.
In addition, in non-heating seasons, the recharging well 2 needs to be subjected to pumping treatment, the production well 1 and the recharging well 2 are converted through a valve 14 arranged on the water separator 5 and the water collector 6, the pumped water is treated by the degassing unit 8 and the filtering facility 10 and then is recharged to the original production well 1, the pumped water is prevented from being directly discharged outside, and water resources are saved.
The technical solution of the present invention is not limited to the above-mentioned specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (2)
1. A middle-deep geothermal energy collecting and irrigating integrated utilization system comprises a production well, a recharging well, a heat exchange system and a heat consumer, wherein the heat exchange system and the heat consumer are connected with a pipeline through a circulating pump for heat exchange; the method is characterized in that: the immersible pump export is installed and is adopted and irritate the check valve, the water inlet of degasser group is connected to the delivery port of water collector, and the water inlet of geothermal water booster pump is connected to the delivery port of degasser group, and the water inlet of filtering facilities is connected to the delivery port of geothermal water booster pump, and the delivery port of filtering facilities is connected to heat transfer system, and heat transfer system's low temperature tail water passes through the tube coupling to water knockout drum, and is equipped with the valve on this pipeline.
2. The middle-deep geothermal energy harvesting and irrigating integrated utilization system according to claim 1, wherein: and a submersible pump is arranged in the recharge well, a water outlet of the submersible pump is provided with a recharge check valve and is respectively connected to the water distributor and the water collector through a second geothermal pipeline, and valves are arranged on the second geothermal pipelines at the water inlets of the water distributor and the water collector.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091336A (en) * | 2021-04-02 | 2021-07-09 | 中石化绿源地热能(陕西)开发有限公司 | Hydrothermal geothermal exploitation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113091336A (en) * | 2021-04-02 | 2021-07-09 | 中石化绿源地热能(陕西)开发有限公司 | Hydrothermal geothermal exploitation system and method |
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