CN111457607A - Water source heat pump groundwater recharge system - Google Patents
Water source heat pump groundwater recharge system Download PDFInfo
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- CN111457607A CN111457607A CN202010393922.9A CN202010393922A CN111457607A CN 111457607 A CN111457607 A CN 111457607A CN 202010393922 A CN202010393922 A CN 202010393922A CN 111457607 A CN111457607 A CN 111457607A
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- water
- well
- valve
- recharging
- pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
Abstract
The invention discloses a water source heat pump groundwater recharge system, which is characterized in that a pumping well and a recharge well are arranged, well water is pumped out by the pumping well, is recharged into the recharge well after heat exchange of a heat pump device, the recharge system is connected with an external heat pump device to form a closed loop, the process is closed, and groundwater returns to the ground without loss and pollution after circulation; a recharging booster pump is arranged on a water return pipeline of the circulating water and used for controlling recharging pressure and adjusting recharging flow and dynamic water level of a recharging well; and meanwhile, a water level sensor is arranged in a shaft of the recharging well, and when the dynamic water level of the recharging well rises to trigger the sensor, the controller sends a water level protection instruction to prevent the dynamic water level of the recharging well from rising to overflow the shaft. The pumping well and the recharging well are completely the same in configuration and can be used as a pumping well and a recharging well, when the water pump on one side fails, the water pump on the other side can completely replace work, and the high reliability of the work of the recharging system is guaranteed. The invention has simple design, low cost and convenient application and popularization.
Description
Technical Field
The invention relates to the technical field of water source heat pump application, in particular to a groundwater recharge system and a recharge method of a water source heat pump.
Background
The water source heat pump takes water as a heat source, is clean and energy-saving, can provide a low-temperature heat source, and is very suitable for heating of industrial and mining enterprises and agricultural production; however, most areas in the north of China do not have surface water, only underground water can be used, water resources are in short supply, the underground water is used as a water source, and water discharged by a water source heat pump cannot be simply discharged and must be recycled.
At present, a water source heat pump uses underground water as a water source, and usually adopts a pipe well for extraction and recharge, and three engineering methods of vacuum recharge, gravity recharge and pressure recharge are adopted for recharging the underground water through the pipe well.
Among the three methods, gravity recharge is also natural recharge, although simple, has high requirements on geological structures and low recharge efficiency, and usually requires N: the second water well is configured in a mode 1, namely the recharging requirement can be met only by one first water well corresponding to N second water wells, and most application environments are difficult to meet the conditions; vacuum recharge and pressure recharge require complicated engineering design, construction process and operation flow, the investment is large, and the complexity and high cost of the technology limit the popularization of application.
Therefore, how to provide a water source heat pump groundwater recharge system with simple engineering design and easy realization is a problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The present invention solves at least to some extent one of the above-mentioned technical problems of the prior art.
In view of the above, the invention aims to provide a water source heat pump groundwater recharge system, which has simple and reasonable engineering design and low cost; the height of the dynamic water level of the recharge is controlled by controlling the recharge pressure, so that the method is well suitable for different geological structures; the second well does not need to be sealed, has small construction difficulty, can meet the heating requirements of industrial and mining enterprises and agricultural production, and is convenient to apply and popularize.
In order to achieve the purpose, the invention adopts the following technical scheme:
a water source heat pump groundwater recharge system comprises a first water well, a second water well, a submersible pump, an in-well pipeline, a valve, a heat pump device, a sensor and a controller; the sensors are installed in the first water well and the second water well;
the submersible pump comprises a first submersible pump and a second submersible pump; the first submersible pump and the second submersible pump are respectively installed at the bottoms of the first water well and the second water well;
the well pipeline comprises a first pump pipe, a second pump pipe, a first recharging guide pipe and a second recharging guide pipe; the first pump pipe and the second pump pipe are respectively connected with the first submersible pump and the second submersible pump; the first recharging guide pipe and the second recharging guide pipe are respectively arranged in the first well and the second well and extend to the bottom of the well from the well mouth;
the valve comprises a one-way valve and a switch valve; the one-way valve comprises a first one-way valve and a second one-way valve; the switch valve comprises a first electric valve, a second electric valve, a first drain valve and a second drain valve;
the water inlet of the heat pump device is communicated with the first drain valve, and the first drain valve is respectively communicated with the water outlets of the first check valve and the second check valve and a valve port at one end of the second drain valve; the water inlets of the first one-way valve and the second one-way valve are respectively connected with the first submersible pump and the second submersible pump; a recharging port of the heat pump device is respectively communicated with the first electric valve and the second electric valve, and the first electric valve and the second electric valve are respectively communicated with the first recharging conduit and the second recharging conduit;
the controller is respectively electrically connected with the first submersible pump, the second submersible pump, the first electric valve, the second electric valve and the sensor.
According to the technical scheme, compared with the prior art, the groundwater recharge system for the water source heat pump is characterized in that the first water well and the second water well are arranged to serve as the first water well and the second water well, and well water is pumped out through the first water well, exchanges heat through the heat pump device and is recharged into the second water well. The recharging system is connected with an external heat pump device to form a closed loop, the process is closed, and the underground water returns to the underground without loss and pollution after circulating; and meanwhile, a water level sensor is arranged in the shaft of the second water well, and after the dynamic water level of the second water well rises to trigger the sensor, the controller can adjust the pressure of the recharge water according to the water level sensor and send a water level protection instruction if necessary to prevent the dynamic water level of the second water well from rising to overflow the shaft. The first water well and the second water well are completely the same in configuration and can be mutually supplemented, and when the submersible pump on one side fails, the water pump on the other side can completely replace the operation, so that the high reliability of the operation of the recharge system is guaranteed; simple design, low cost and convenient application and popularization.
Preferably, in the groundwater recharging system of the water source heat pump, a recharging booster pump is further arranged, a water inlet of the recharging booster pump is connected with a recharging port of the heat pump device, and a water outlet of the recharging booster pump is respectively connected with the first electric valve and the second electric valve; by adopting the scheme, the recharging booster pump can be arranged on the water return pipeline of the circulating water to control the recharging pressure, adjust the recharging flow and the dynamic water level of the second well, control the recharging pressure and protect the dynamic water level.
Preferably, in the above groundwater recharging system of the water source heat pump, the water outlet of the first check valve, the water outlet of the second check valve, the valve port at one end of the first drain valve and the valve port at one end of the second drain valve are connected through a four-way joint; the water flow direction is controlled by controlling the flow direction of the first drain valve and the second drain valve, so that the water well is convenient to clean and supplies water for the heat pump device.
Preferably, in the groundwater recharge system of the water source heat pump, a water outlet of the recharge booster pump, a valve port at one end of the first electric valve and a valve port at one end of the second electric valve are connected through a tee joint; the scheme can control the recharging direction by controlling the flow direction of the first electric valve and the second electric valve.
Preferably, in the groundwater recharging system of the water source heat pump, the sensor comprises a first water level sensor and a second water level sensor, and the first water level sensor and the second water level sensor are respectively installed at the top of the well bores of the first water well and the second water well.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram provided by the present invention;
fig. 2 is a schematic diagram of one embodiment of the present invention.
Reference numerals
The water-saving device comprises a first water well 1, a second water well 2, a first submersible pump 30, a second submersible pump 31, a first pump pipe 40, a second pump pipe 41, a first recharging guide pipe 42, a second recharging guide pipe 43, a first one-way valve 50, a second one-way valve 51, a first electric valve 52, a second electric valve 53, a first drain valve 54, a second drain valve 55, a heat pump device 6, a first water level sensor 70, a second water level sensor 71, a controller 8 and a recharging booster pump 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise specifically indicated and limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to FIG. 1, the groundwater recharging system of the water source heat pump of the present invention comprises
The system comprises a first water well 1, a second water well 2, a submersible pump, an in-well pipeline, a valve, a heat pump device 6, a sensor and a controller 8; sensors are arranged in the first water well 1 and the second water well 2;
the submersible pumps include a first submersible pump 30 and a second submersible pump 31; the first submersible pump 30 and the second submersible pump 31 are respectively arranged at the bottoms of the first water well 1 and the second water well 2;
the well tubing comprises a first pump tube 40, a second pump tube 41, a first recharge conduit 42 and a second recharge conduit 43; the first pump pipe 40 and the second pump pipe 41 are respectively connected with the first submersible pump 30 and the second submersible pump 31; the first recharging guide pipe 42 and the second recharging guide pipe 43 are respectively arranged in the first water well 1 and the second water well 2 and extend from the well mouth to the well bottom;
the valve comprises a one-way valve and a switch valve; the check valves include a first check valve 50 and a second check valve 51; the switch valve comprises a first electric valve 52, a second electric valve 53, a first drain valve 54 and a second drain valve 55;
a water inlet of the heat pump device 6 is communicated with a first drain valve 54, and the first drain valve 54 is respectively communicated with water outlets of the first check valve 50 and the second check valve 51 and a valve port at one end of a second drain valve 55; the water inlets of the first check valve 50 and the second check valve 51 are respectively connected with the first submersible pump 30 and the second submersible pump 31; the recharging ports of the heat pump device 6 are respectively communicated with a first electric valve 52 and a second electric valve 53, and the first electric valve 52 and the second electric valve 53 are respectively communicated with a first recharging conduit 42 and a second recharging conduit 43;
the controller 8 is electrically connected to the first submersible pump 30, the second submersible pump 31, the first electric valve 52, the second electric valve 53 and the sensor, respectively.
Specifically, a first submersible pump 30 and a second submersible pump 31 are respectively installed at the positions, close to the bottom (more than 3 meters) of a shaft, of the first water well 1 and the second water well 2;
the first and second recharge conduits 42, 43 are mounted in opposite positions of the first and second submersible pumps 30, 31, respectively.
In the above embodiment of the present invention, a recharging booster pump 9 is further provided, a water inlet of the recharging booster pump 9 is connected to a recharging port of the heat pump device 6, and a water outlet thereof is respectively connected to the first electric valve 52 and the second electric valve 53.
In the above embodiment of the present invention, the water outlet of the first check valve 50, the water outlet of the second check valve 51, the port at one end of the first drain valve 54, and the port at one end of the second drain valve 55 are connected by a four-way valve.
In the above embodiment of the present invention, the water outlet of the recharge booster pump 9, the port of the first electric valve 52 and the port of the second electric valve 53 are connected by a three-way connection.
In the above-described embodiment of the present invention, the sensors include the first water level sensor 70 and the second water level sensor 71, and are installed at the top of the well bores of the first water well 1 and the second water well 2, respectively.
In the above embodiments, the recharge booster pump 9 may not be provided where the geological structure and recharge water flow permit.
Referring to fig. 2, in another embodiment of the present invention, the first submersible pump 30 and the second submersible pump 31 are both submersible pumps allowing passive inversion, and the first pump tube 40 and the second pump tube 41 can be used as recharging conduits, and the pipeline connecting the first recharging conduit 42 and the second recharging conduit 43 is connected to the corresponding first pump tube 40 and the second pump tube 41 to serve as recharging conduits.
In the embodiment shown in the attached figure 1, the recharging method comprises the following steps:
under the normal working state, the first water well 1 and the second water well 2 both have two working modes of pumping water and recharging. The controller 8 controls the first submersible pump 30 to start, the second submersible pump 31 to stop, the first electric valve 52 to open and the second electric valve 53 to close, so that the first water well 1 is in a water pumping mode and the second water well 2 is in a recharging mode; the controller 8 controls the first submersible pump 30 to stop, the second submersible pump 31 to start, the first electric valve 52 to close and the second electric valve 53 to open, so that the first water well 1 is in a recharging mode and the second water well 2 is in a pumping mode;
the following examples are the recharging method in which the first well 1 is in pumping mode and the second well 2 is in recharging mode:
the controller 8 controls the first submersible pump 30 to start, the second submersible pump 31 to stop, the first electric valve 52 to open and the second electric valve 53 to close, so that the first water well 1 is in a water pumping mode and the second water well 2 is in a recharging mode; the water flow is output from the first submersible pump 30, flows through the first pump pipe 40, the first one-way valve 50 and the first drain valve 54, and is sent out to the external heat pump device 6 through the water outlet pipeline; after heat exchange, water flow returns along the water return pipeline, is pressurized by the recharge booster pump 9, enters the bottom of the shaft of the second well 2 through the second electric valve 53 and the second recharge conduit 43, and the recharge process is completed.
In the well flushing state, stopping the first submersible pump 30, closing the first drain valve 54, opening the second drain valve 55, starting the second submersible pump 31, and pumping back the second well 2 for well flushing;
in the dynamic water level adjusting state, a recharge booster pump 9 arranged on the circulating water return pipeline is used for controlling the recharge pressure, adjusting the recharge flow and adjusting the dynamic water level of the recharge well; the controller 8 is set for setting working mode, recharging pressure value and dynamic water level protection value. A water level sensor is arranged in a shaft of the recharging well, and after the dynamic water level of the recharging well rises to trigger the sensor, the controller 8 can adjust the pressure of the recharging water according to the water level sensor and send a water level protection instruction if necessary to prevent the dynamic water level of the recharging well from rising to overflow the shaft.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A water source heat pump groundwater recharge system is characterized by comprising a first water well (1), a second water well (2), a submersible pump, an in-well pipeline, a valve, a heat pump device (6), a sensor and a controller (8); the sensors are arranged in the first water well (1) and the second water well (2);
the submersible pump comprises a first submersible pump (30) and a second submersible pump (31); the first submersible pump (30) and the second submersible pump (31) are respectively installed at the bottoms of the first water well (1) and the second water well (2);
the well tubing comprises a first pump tube (40), a second pump tube (41), a first recharge conduit (42) and a second recharge conduit (43); the first pump pipe (40) and the second pump pipe (41) are respectively connected with the first submersible pump (30) and the second submersible pump (31); the first recharging guide pipe (42) and the second recharging guide pipe (43) are respectively arranged in the first water well (1) and the second water well (2) and extend from the well head to the well bottom;
the valve comprises a one-way valve and a switch valve; the check valve comprises a first check valve (50) and a second check valve (51); the switch valve comprises a first electric valve (52), a second electric valve (53), a first drain valve (54) and a second drain valve (55);
a water inlet of the heat pump device (6) is communicated with the first drain valve (54), and the first drain valve (54) is respectively communicated with a water outlet of the first check valve (50) and the second check valve (51) and a valve port of one end of the second drain valve (55); the water inlets of the first check valve (50) and the second check valve (51) are respectively connected with the first submersible pump (30) and the second submersible pump (31); the recharging port of the heat pump device (6) is respectively communicated with the first electric valve (52) and the second electric valve (53), and the first electric valve (52) and the second electric valve (53) are respectively communicated with the first recharging conduit (42) and the second recharging conduit (43);
the controller (8) is electrically connected with the first submersible pump (30), the second submersible pump (31), the first electric valve (52), the second electric valve (53) and the sensor respectively.
2. The groundwater recharge system of a water source heat pump as claimed in claim 1, wherein a recharge booster pump (9) is further provided, a water inlet of the recharge booster pump (9) is connected to a recharge port of the heat pump device (6), and a water outlet of the recharge booster pump is connected to the first electric valve (52) and the second electric valve (53), respectively.
3. The groundwater recharge system of a water source heat pump as claimed in claim 2, wherein the outlet of the first check valve (50), the outlet of the second check valve (51), the port of the first drain valve (54) and the port of the second drain valve (55) are connected by a four-way valve.
4. The groundwater recharge system of a water source heat pump as claimed in claim 2, wherein the outlet of the recharge booster pump (9), the port of the first electric valve (52) and the port of the second electric valve (53) are connected by a tee joint.
5. A water source heat pump groundwater recharge system as claimed in claim 2, wherein the sensors comprise a first water level sensor (70) and a second water level sensor (71) and are mounted on the top of the shaft of the first water well (1) and the second water well (2), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010393922.9A CN111457607A (en) | 2020-05-11 | 2020-05-11 | Water source heat pump groundwater recharge system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010393922.9A CN111457607A (en) | 2020-05-11 | 2020-05-11 | Water source heat pump groundwater recharge system |
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| CN111457607A true CN111457607A (en) | 2020-07-28 |
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| CN202010393922.9A Pending CN111457607A (en) | 2020-05-11 | 2020-05-11 | Water source heat pump groundwater recharge system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7096930B1 (en) | 2021-05-06 | 2022-07-06 | 三菱重工サーマルシステムズ株式会社 | Geothermal heat utilization system, control device, control method, program |
| WO2022234705A1 (en) * | 2021-05-06 | 2022-11-10 | 三菱重工サーマルシステムズ株式会社 | Geothermal heat utilization system, control device, control method, and program |
-
2020
- 2020-05-11 CN CN202010393922.9A patent/CN111457607A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7096930B1 (en) | 2021-05-06 | 2022-07-06 | 三菱重工サーマルシステムズ株式会社 | Geothermal heat utilization system, control device, control method, program |
| WO2022234705A1 (en) * | 2021-05-06 | 2022-11-10 | 三菱重工サーマルシステムズ株式会社 | Geothermal heat utilization system, control device, control method, and program |
| WO2022234703A1 (en) * | 2021-05-06 | 2022-11-10 | 三菱重工サーマルシステムズ株式会社 | Geothermal heat utilization system, control device, control method, program |
| JP2022172641A (en) * | 2021-05-06 | 2022-11-17 | 三菱重工サーマルシステムズ株式会社 | Underground heat utilization system, control device, control method, and program |
| JP2022172656A (en) * | 2021-05-06 | 2022-11-17 | 三菱重工サーマルシステムズ株式会社 | Underground heat utilization system, control device, control method, and program |
| JP7179905B2 (en) | 2021-05-06 | 2022-11-29 | 三菱重工サーマルシステムズ株式会社 | Geothermal heat utilization system, control device, control method, program |
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