CN116717926B - Mid-deep geothermal energy collection same-well pumping-back system - Google Patents

Mid-deep geothermal energy collection same-well pumping-back system Download PDF

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Publication number
CN116717926B
CN116717926B CN202310943403.9A CN202310943403A CN116717926B CN 116717926 B CN116717926 B CN 116717926B CN 202310943403 A CN202310943403 A CN 202310943403A CN 116717926 B CN116717926 B CN 116717926B
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China
Prior art keywords
filter
box
ring
water
case
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CN116717926A (en
Inventor
刘艳
李博
丛培德
刘光宇
尚进
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Tianjin Geothermal Development Co ltd
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Tianjin Geothermal Development Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24TGEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00Geothermal collectors
    • F24T10/20Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46Regenerating the filtering material in the filter
    • B01D24/4626Construction of spray heads specially adapted for regeneration of the filter material or for filtrate discharging
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24TGEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T50/00Geothermal systems 
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to the technical field of geothermal energy collection, in particular to a mid-deep geothermal energy collection same-well pumping-back system; including gathering well, heat exchanger and filtration purification unit, when needs wash the filter media in the filter chamber, start rotating the subassembly, drive the rotation ring through drive gear and rotate on first washing case, thereby make the threaded rod precess in the inside of rotation ring, and then drive the inside slip of installing frame at the filter box through connecting the bearing, make the filter chamber that is not attached to by impurity on the installing frame and the internal diameter assorted of filter box, the filter chamber that is attached to impurity on the installing frame removes to the inside of corresponding first washing case and second washing case, thereby utilize washing subassembly to wash the filter media of needs abluent filter media, adopt above-mentioned structure, when making use the filter media to filter the purification to the geothermal water, need not to shut down and wash the filter media, thereby save time cost.

Description

Mid-deep geothermal energy collection same-well pumping-back system
Technical Field
The invention relates to the technical field of geothermal energy collection, in particular to a mid-deep geothermal energy collection same-well pumping-back system.
Background
The energy collection system of the prior water source heat pump central air conditioner has the disadvantages of low groundwater level caused by incomplete recharging after long-term use, sand removal during use, geological collapse and the like easily caused by long-term use.
To solve the above problems, the prior published patent (CN 210717769U) discloses a mid-deep geothermal energy collecting and pumping system of the same well, comprising a collecting well and a heat exchanging assembly; the collecting well body comprises a lower heat energy extraction area and an upper reinjection area, a sealing device is arranged at the adjacent part between the heat energy extraction area and the reinjection area, a through hole for penetrating a water pumping pipe is arranged in the center of the sealing device, the lower end of the water pumping pipe extends into the heat energy extraction area, and a submersible pump for pumping geothermal water is connected to the lower end of the water pumping pipe; a quartz sand filter material layer is filled between the outer side of the well pipe of the recharging area and the inner wall of the well hole; the heat exchange assembly comprises a filtering and purifying device and a heat exchanger, the technical scheme adopts the collecting well with water pumping and backwater functions, heat in middle-deep geothermal water is collected and utilized, but geothermal water is not consumed, the recharging rate of geothermal water after heat exchange is high, the groundwater level is not reduced, and the change and damage of a geological structure are not caused.
However, after the filter layer in the filtering and purifying device in the conventional medium-deep geothermal energy collecting and pumping-back system is used for a long time, the filter layer is required to be cleaned by a back flushing structure after the filter layer is stopped, and the filter layer cannot be cleaned while filtering and purifying.
Disclosure of Invention
The invention aims to provide a mid-deep geothermal energy collecting and same-well pumping-back system, which solves the problems that after a filter layer in a filtering and purifying device in the mid-deep geothermal energy collecting and same-well pumping-back system in the prior art is used for a long time, the filter layer is required to be cleaned by a back flushing structure after the filter layer is stopped, and the filter layer cannot be cleaned while being filtered and purified.
In order to achieve the above purpose, the invention provides a mid-deep geothermal energy collecting and same-well pumping-back system, which comprises a collecting well, a heat exchanger and a filtering and purifying unit, wherein the collecting well comprises a lower thermal energy extraction area and an upper reinjection area, the borehole diameter of the thermal energy extraction area is smaller than that of the reinjection area, a sealing device is arranged at the adjacent part between the thermal energy extraction area and the reinjection area, the sealing device comprises a bearing steel plate and a sealing rubber plate fixedly arranged on the lower surface of the bearing steel plate, the sealing device is arranged at the top of the borehole of the thermal energy extraction area, a through hole for penetrating a water pumping pipe is arranged in the center of the bearing steel plate, the lower end of the water pumping pipe extends into the thermal energy extraction area, a submersible pump for pumping geothermal water is connected to the lower end of the water pumping pipe, a quartz sand filter layer is filled between the outer side of a well pipe of the reinjection area and the borehole wall, one end of the water pumping pipe, which is far away from the submersible pump, is connected with a water inlet of the heat exchanger, a water outlet of the heat exchanger is connected with a water outlet of the heat exchanger, and the water pumping pipe extends into the heating area;
the suction pipe is close to the one end of heat exchanger is provided with filtration purification unit, filtration purification unit includes filtration box and a plurality of straining device, be provided with a plurality of on the filtration box straining device, every straining device all includes first washs case, second washs case, filter frame, rotating assembly, threaded rod, rotation ring and cleaning assembly, the both sides of filtration box all are provided with the through groove, first washs the case with the second washs the case all with the filtration box is dismantled and is connected, and is located respectively the both sides of filtration box, and all covers and establish in the outside of corresponding the through groove, it is provided with to lead to the inslot to slide the filter frame, first washs the case with the second washs the internal diameter cross-section of case unanimous, the size of filter frame is with two the internal diameter cross-section of filter box is unanimous, be provided with two filter chambers on the filter frame, every filter intracavity is provided with first washs the case with the filter ring, the filter ring is close to the filter ring is provided with and is provided with the filter frame, the filter ring is close to the filter box is provided with the filter ring one end is kept away from to the filter box, the filter ring is connected with the first end is kept away from to the filter ring, and is provided with the filter box is connected with the first end.
Each cleaning assembly comprises a pump body, a main conveying pipe, a shunt pipe and two spray pipes, the pump body is installed at the top of the corresponding first cleaning box and the top of the corresponding second cleaning box, the input end of the pump body is communicated with an external water source, the output end of the pump body is provided with the main conveying pipe, the main conveying pipe is far away from one end of the pump body is provided with the shunt pipe, the two ends of the shunt pipe are respectively provided with the spray pipes, the two spray pipes penetrate through the corresponding first cleaning box and the corresponding second cleaning box, and one side, close to the corresponding through groove, of each spray pipe is respectively provided with a plurality of spray heads.
Each rotating assembly comprises a servo motor, a driving shaft and a driving gear, the servo motor is connected with the first cleaning box in a detachable mode, the driving shaft is arranged at the output end of the servo motor, the driving gear is arranged at one end, far away from the servo motor, of the driving shaft, and the driving gear is in mechanical transmission with the transmission gear.
Each rotating ring comprises a ring body and two limiting rings, the ring bodies are connected with the first cleaning box in a rotating mode, two limiting rings are arranged outside the ring bodies, and the two limiting rings are respectively located on the inner surface and the outer surface of one end, far away from the filtering box body, of the corresponding first cleaning box.
The medium-deep geothermal energy collecting and same-well pumping-back system further comprises a plurality of collecting boxes, wherein a plurality of collecting boxes are arranged at the bottom of the filtering box body, collecting pipes are arranged at two ends of each collecting box, and one end, away from each collecting box, of each collecting pipe is communicated with the bottoms of the corresponding first cleaning box and second cleaning box respectively.
Wherein, every the first washs the case with the bottom of second washs the case all is the chamfer platform structure setting.
According to the mid-deep geothermal energy collecting and same-well pumping-back system, different filter fillers are filled in the filter frames in each filter mechanism, so that geothermal water is filtered and purified by utilizing the matching of multiple filter fillers, one filter cavity in the filter frames is matched with the pipe diameter of the filter box body, geothermal water is filtered and purified, when the filter fillers in the filter cavities need to be cleaned, the rotating assembly is started, the rotating ring is driven to rotate on the first cleaning box through the transmission gear, the threaded rod is screwed in the rotating ring, the installation frame is driven to slide in the filter box body through the connection bearing, the filter cavities which are not attached by impurities on the installation frame are matched with the inner diameter of the filter box body, the filter cavities with impurities attached on the installation frame are moved to the corresponding first cleaning box and the second cleaning box, therefore, the filter cavities need to be cleaned by the aid of the cleaning assembly, filter cavities need to be cleaned, filter water is stopped when the filter cavities need to be cleaned, and filter water is not to be cleaned, and therefore the filter cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a mid-deep geothermal energy harvesting and pumping-back system according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a filter purification unit according to a first embodiment of the present invention.
Fig. 3 is an enlarged view of a partial structure at a of fig. 2 provided by the present invention.
Fig. 4 is a partially disassembled structure schematic illustration of a filtering and purifying unit according to a first embodiment of the present invention.
Fig. 5 is an enlarged view of a partial structure at B of fig. 4 provided by the present invention.
Fig. 6 is a schematic diagram of a filter purification unit according to a second embodiment of the present invention.
Fig. 7 is a schematic view showing a part of the structure of a filtration and purification unit in a third embodiment of the present invention.
101-collecting well, 102-heat exchanger, 103-filtering box, 104-first washing box, 105-second washing box, 106-filtering frame, 107-rotating component, 108-threaded rod, 109-rotating ring, 110-cleaning component, 111-pump body, 112-main conveying pipe, 113-shunt pipe, 114-spray pipe, 115-servo motor, 116-driving shaft, 117-driving gear, 118-ring body, 119-limit ring, 120-heat energy extraction area, 121-recharging area, 122-sealing device, 123-bearing steel plate, 124-sealing rubber plate, 125-pumping pipe, 126-submersible pump, 127-quartz sand filtering material layer, 128-return pipe, 129-through groove, 130-filtering cavity, 131-connecting bearing, 132-driving gear, 133-spray head, 201-collecting box, 202-collecting pipe, 301-protecting shell, 302-shell, 303-mounting wing plate.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
First embodiment:
referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a mid-deep geothermal energy collecting and pumping-back system according to a first embodiment, fig. 2 is a schematic structural diagram of a filtering and purifying unit according to a first embodiment, fig. 3 is a partially enlarged structural diagram of a portion of a filtering and purifying unit shown in fig. 2, fig. 4 is a partially disassembled structural diagram of a filtering and purifying unit according to a first embodiment, and fig. 5 is a partially enlarged structural diagram of a portion of a filtering and purifying unit shown in fig. 4B.
The invention provides a mid-deep geothermal energy collecting and same-well pumping-back system, which comprises a collecting well 101, a heat exchanger 102 and a filtering and purifying unit, wherein the filtering and purifying unit comprises a filtering box body 103 and a plurality of filtering mechanisms, the filtering box body 103 is provided with a plurality of filtering mechanisms, each filtering mechanism comprises a first cleaning box 104, a second cleaning box 105, a filtering frame 106, a rotating assembly 107, a threaded rod 108, a rotating ring 109 and a cleaning assembly 110, each cleaning assembly 110 comprises a pump body 111, a conveying main pipe 112, a shunt pipe 113 and two spraying pipes 114, each rotating assembly 107 comprises a servo motor 115, a driving shaft 116 and a driving gear 117, and each rotating ring 109 comprises a ring body 118 and two limiting rings 119.
For this embodiment, the collecting well 101 includes a lower heat energy extraction area 120 and an upper reinjection area 121, the diameter of the well bore of the heat energy extraction area 120 is smaller than that of the reinjection area 121, a sealing device 122 is disposed adjacent to the heat energy extraction area 120 and the reinjection area 121, the sealing device 122 includes a bearing steel plate 123 and a sealing rubber plate 124 fixedly disposed on the lower surface of the bearing steel plate 123, the sealing device 122 is disposed on the top of the well bore of the heat energy extraction area 120, a through hole for passing through a water pumping pipe 125 is disposed in the center of the bearing steel plate 123, the lower end of the water pumping pipe 125 extends into the heat energy extraction area 120, a submersible pump 126 for pumping geothermal water is connected to the lower end of the water pumping pipe 125, a quartz sand filter layer 127 is filled between the outer side of the well pipe of the reinjection area 121 and the inner wall of the well bore, the water pumping pipe 125 is connected with the water inlet of the heat exchanger 102 at one end far away from the submerged pump 126, the heat exchanger 102 is connected with a heating pipe network, the water outlet of the heat exchanger 102 is connected with a water return pipe 128, the water outlet end of the water return pipe 128 extends into the reinjection area 121, as the lower heat energy extraction area 120 and the upper reinjection area 121 in the collection well 101 are separated, the heat energy extraction area 120 is used for extracting geothermal water in a middle-deep layer, the extracted geothermal water flows out through the water pumping pipe 125 and then exchanges heat through the heat exchanger 102 (such as a plate type heat exchanger 102), the heat exchanger 102 is connected with the heating pipe network to provide heat for the heating pipe network, the geothermal water after heat exchange flows back to the reinjection area 121 through the closed water return pipe 128, the quartz sand filter material is filled between a well pipe and the inner wall of the reinjection area 121, play the drainage, heat accumulation effect for the geothermal water of recharging is back to ooze the in-process and is carried out the heat exchange with groundwater and soil, heat energy extraction district 120 with set up between the recharging district 121 closing means 122 will heat energy extraction district 120 with the recharging district 121 effectively separates, the geothermal water of recharging district 121 can not get into heat energy extraction district 120 can avoid recharging water to influence quality of water and temperature in the heat energy extraction district 120.
Wherein the water suction pipe 125 is provided with the filtration purification unit near one end of the heat exchanger 102, both sides of the filtration box body 103 are provided with through grooves 129, the first filtration box 104 and the second filtration box 105 are detachably connected with the filtration box body 103 and are respectively positioned at both sides of the filtration box body 103, and are respectively covered outside the corresponding through grooves 129, the filtration box 106 is slidably arranged in the through grooves 129, the inner diameter section of the first filtration box 104 and the second filtration box 105 is consistent with the inner diameter section of the filtration box body 103, the size of the filtration box 106 is consistent with the inner diameter section of the two filtration box bodies 103, the filtration box 106 is provided with two filtration cavities 130, each filtration cavity 130 is internally provided with filtration filler, the middle part of one end of the first filtration box 104 far away from the filtration box body 103 is rotationally connected with the rotation ring 109, the filter frame 106 is provided with a connecting bearing 131 near one end of the rotating ring 109, the threaded rod 108 is connected with the inner thread of the rotating ring 109, one end of the threaded rod 108 near the filter frame 106 is inserted into the connecting bearing 131, one end of the first cleaning box 104 far away from the filter box body 103 is also provided with a rotating assembly 107, the outer part of the rotating ring 109 is provided with a transmission gear 132, the output end of the rotating assembly 107 is mechanically transmitted with the transmission gear 132, one ends of the first cleaning box 104 and the second cleaning box 105 near the filter box body 103 are respectively provided with a cleaning assembly 110, different filter fillers are filled in the filter frame 106 in each filter mechanism, so that geothermal water is filtered and purified by matching with various filter fillers, one of the filter cavities 130 in the filter frame 106 is matched with the pipe diameter of the filter box 103, so that geothermal water is filtered and purified, when filter fillers in the filter cavities 130 are required to be cleaned, the rotating assembly 107 is started, the rotating ring 109 is driven to rotate on the first cleaning box 104 through the transmission gear 132, so that the threaded rod 108 is screwed in the rotating ring 109, and then the connecting bearing 131 drives the installation frame to slide in the filter box 103, so that the filter cavities 130 which are not attached by impurities on the installation frame are matched with the inner diameter of the filter box 103, and the filter cavities 130 attached with impurities on the installation frame are moved to the corresponding inner parts of the first cleaning box 104 and the second cleaning box 105, so that the filter fillers in the filter cavities 130 which are required to be cleaned are not required to be cleaned are utilized to be cleaned by the cleaning assembly 110.
Secondly, the pump body 111 is installed at the top of corresponding first washing case 104 and second washing case 105, the input of pump body 111 is linked together with external water source, the output of pump body 111 is provided with the delivery main 112, the delivery main 112 is kept away from the one end of pump body 111 is provided with shunt tubes 113, the both ends of shunt tubes 113 all are provided with shower 114, two shower 114 all run through corresponding first washing case 104 and the top of second washing case 105, two shower 114 are close to corresponding one side of logical groove 129 all is provided with a plurality of shower nozzles 133, starts pump body 111, through delivery main 112 with shunt tubes 113 carry washing water to in the shower 114 to utilize a plurality of shower nozzles 133 to wash the filter filler in the filter chamber 130, thereby get rid of the impurity that adheres to on the filter filler.
Meanwhile, the servo motor 115 is detachably connected with the first cleaning tank 104, the output end of the servo motor 115 is provided with a driving shaft 116, one end, away from the servo motor 115, of the driving shaft 116 is provided with a driving gear 117, the driving gear 117 is mechanically driven by a transmission gear 132, the servo motor 115 is started, the driving gear 117 is driven to rotate by the driving shaft 116, and the driving gear 117 is meshed with the transmission gear 132, so that the rotating ring 109 is driven to rotate on the first cleaning tank 104.
In addition, the ring body 118 is rotatably connected with the first cleaning box 104, two limiting rings 119 are arranged outside the ring body 118, the two limiting rings 119 are respectively located on the inner surface and the outer surface of the corresponding end, far away from the filtering box body 103, of the first cleaning box 104, and the structure is more stable when the rotating ring 109 rotates on the first cleaning box 104 through the arrangement of the two limiting rings 119.
When the mid-deep geothermal energy collecting and same-well pumping-back system of the embodiment is used, as the thermal energy extraction area 120 at the lower part and the recharging area 121 at the upper part are separated in the collecting well 101, the geothermal water at the mid-deep layer is extracted in the thermal energy extraction area 120, flows out through the water extraction pipe 125, then is subjected to heat exchange through the heat exchanger 102 (such as the plate type heat exchanger 102), the heat exchanger 102 is connected to a heating pipe network to provide heat for the heating pipe network, the geothermal water after heat exchange flows back to the recharging area 121 through the closed water return pipe 128, the quartz sand filter material is filled between the well pipe and the inner wall of the well hole of the recharging area 121 to play roles of water filtering and heat accumulation, so that the heat exchange is performed between the recharged geothermal water and the underground soil in the recharging process, the sealing device 122 is arranged between the thermal energy extraction area 120 and the recharging area 121, the thermal energy extraction area 120 is effectively separated from the recharging area 121, geothermal water in the recharging area 121 does not enter the thermal energy extraction area 120, the water quality and the water temperature in the thermal energy extraction area 120 can be prevented from being influenced by recharging water, and different filter fillers are filled in the filter frames 106 in each filter mechanism, so that the geothermal water is filtered and purified by matching with a plurality of filter fillers, the pipe diameter of one filter cavity 130 in the filter frames 106 is matched with that of the filter box 103, so that the geothermal water is filtered and purified, when the filter fillers in the filter cavity 130 are required to be cleaned, the rotating assembly 107 is started, the rotating ring 109 is driven to rotate on the first cleaning box 104 through the transmission gear 132, so that the threaded rod 108 is screwed in the rotating ring 109, and then drive through connecting bearing 131 the installation frame is in the inside slip of filtration box 103 makes the installation frame is last not by impurity adhesion filtration chamber 130 with the internal diameter phase-match of filtration box 103, the installation frame is last to be attached with debris filtration chamber 130 remove to corresponding first washing case 104 with the inside of second washing case 105, thereby utilize washing assembly 110 to wash the filter media in the filtration chamber 130 that needs to wash, adopt above-mentioned structure for when utilizing filter media to filter the purification to geothermal water, need not to shut down to wash filter media, thereby save time cost.
Second embodiment:
referring to fig. 6 on the basis of the first embodiment, fig. 6 is a schematic structural diagram of a filtering and purifying unit in the second embodiment.
The invention provides a mid-deep geothermal energy collecting and pumping-back system of the same well, which also comprises a plurality of collecting boxes 201.
For this embodiment, a plurality of collecting boxes 201 are disposed at the bottom of the filtering box 103, collecting pipes 202 are disposed at two ends of the collecting boxes 201, one end, away from the collecting boxes 201, of each collecting pipe 202 is respectively communicated with the bottoms of the corresponding first cleaning box 104 and second cleaning box 105, and cleaning water is conveyed to the collecting boxes 201 through the collecting pipes 202, so that the subsequent recycling of the cleaning water is facilitated, and the waste of water resources is reduced.
Wherein, every the bottom of first washing case 104 with the second washing case 105 all is the setting of chamfer platform structure, through the setting of chamfer platform structure for washing water is more smooth and easy to pass through collection pipe 202 carries to in the collection tank 201.
When the system is used for collecting the geothermal energy of the middle and deep layer and withdrawing the same well, through the arrangement of the chamfering platform structure, the cleaning water is smoothly conveyed into the collecting box 201 through the collecting pipe 202, so that the subsequent recycling of the cleaning water is facilitated, and the waste of water resources is reduced.
Third embodiment:
referring to fig. 7, fig. 7 is a schematic view showing a part of the structure of a filtration and purification unit according to a third embodiment.
The invention provides a mid-deep geothermal energy collecting and logging-in-well pumping-back system, which further comprises a plurality of protective shells 301, wherein each protective shell 301 comprises a shell 302 and a mounting wing plate 303.
For this embodiment, one end of each first cleaning tank 104 far away from the filtering tank 103 is provided with a protective housing 301, and the protective housing 301 is covered by the rotating assembly 107 and the corresponding transmission gear 132, so that the rotating assembly 107 and the corresponding transmission gear 132 are protected by the protective housing 301, and the influence of the external environment on the meshing position of the driving gear 117 and the transmission gear 132 is avoided.
The casing 302 is covered outside the rotating assembly 107 and the corresponding transmission gear 132, one end of the casing 302, which is close to the first cleaning box 104, is provided with the installation wing plate 303, the installation wing plate 303 is detachably connected with the first cleaning box 104, and after the casing 302 is covered outside the rotating assembly 107 and the corresponding transmission gear 132, the installation wing plate 303 is fixed on the first cleaning box 104 by using screws, thereby completing the installation of the protective shell 301.
When the mid-deep geothermal energy collecting and pumping-back system is used, the shell 302 is covered outside the rotating assembly 107 and the corresponding transmission gear 132, and then the mounting wing plate 303 is fixed on the first cleaning box 104 by using screws, so that the mounting of the protective shell 301 is completed, the rotating assembly 107 and the corresponding transmission gear 132 are protected by the protective shell 301, and the influence of the external environment on the meshing position of the driving gear 117 and the transmission gear 132 is avoided.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.

Claims (6)

1. The utility model provides a well pumping back system is gone into to middle deep geothermal energy collection, includes collection well and heat exchanger, the collection well includes the heat energy extraction zone of lower part and the back irrigation district of upper portion, the borehole diameter of heat energy extraction zone is less than the borehole diameter of back irrigation district, be equipped with closing device in the heat energy extraction zone with the adjacent department between the back irrigation district, closing device includes bearing steel sheet and fixed setting in bearing steel sheet lower surface's sealing rubber board, closing device sets up the borehole top of heat energy extraction zone the center of bearing steel sheet is equipped with the through-hole that is used for passing the drinking-water pipe, the lower extreme of drinking-water pipe extends to in the heat energy extraction zone the lower extreme of drinking-water pipe is connected with the immersible pump that is used for extracting geothermal water fill between the well outside of back irrigation district and the borehole inner wall, the drinking-water pipe keeps away from the one end links to each other with the water inlet of heat exchanger, the heat exchanger inserts heating pipe network, the delivery port of heat exchanger is connected with the wet return, the water pipe extends into in the back irrigation district, its characterized in that,
the water pump also comprises a filtering and purifying unit, and one end of the water pumping pipe, which is close to the heat exchanger, is provided with the filtering and purifying unit;
the filter purification unit includes filter box and a plurality of filter mechanism, be provided with a plurality of on the filter box filter mechanism, every filter mechanism all includes first washs case, second washs case, filter frame, rotating assembly, threaded rod, rotation ring and cleaning assembly, the both sides of filter box all are provided with logical groove, first washs the case with the second washs the case all with the filter box body is dismantled and is connected, and is located respectively the both sides of filter box body, and all covers and establish in the outside of logical groove, it is provided with to lead to the sliding in the groove filter frame, first washs the case with the second washs the case the internal diameter cross-section with the internal diameter cross-section of filter box body is unanimous, the size of filter frame with two the internal diameter cross-section of filter box body is unanimous, be provided with two filter chambers on the filter frame, every all be provided with filter filler in the filter chamber, first washs the case keep away from the middle part filter box the filter ring connection have the filter ring to be close to the filter ring is provided with the filter ring is close to the first end, the filter ring is provided with the filter ring is connected to the filter box has the filter ring, the filter box is close to the first end is connected to the filter assembly is washed to the filter ring, and is provided with the drive box is close to the filter box.
2. The mid-deep geothermal energy harvesting co-well pumping system of claim 1,
every wash the subassembly all including the pump body, the delivery main pipe, shunt tubes and two shower, the pump body is installed and is corresponding first wash the case with the top of second wash the case, the input and the external water source of pump body are linked together, the output of pump body is provided with the delivery main pipe, the delivery main pipe keeps away from the one end of pump body is provided with the shunt tubes, the both ends of shunt tubes all are provided with the shower, two the shower all runs through the correspondence first wash the case with the top of second wash the case, two the shower is close to the correspondence one side of logical groove all is provided with a plurality of shower nozzles.
3. The mid-deep geothermal energy harvesting co-well pumping system of claim 1,
every rotating assembly all includes servo motor, drive shaft and drive gear, servo motor with first washbox dismantles to be connected, servo motor's output is provided with the drive shaft, the drive shaft is kept away from servo motor's one end is provided with drive gear, drive gear with transmission gear mechanical transmission.
4. The mid-deep geothermal energy harvesting well pumping system of claim 3,
each rotating ring comprises a ring body and two limiting rings, the ring body is rotationally connected with the first cleaning box, two limiting rings are arranged outside the ring body, and the two limiting rings are respectively positioned on the inner surface and the outer surface of one end, far away from the filtering box, of the corresponding first cleaning box.
5. The mid-deep geothermal energy harvesting co-well pumping system of claim 1,
the medium-deep geothermal energy collection same-well pumping-back system further comprises a plurality of collecting boxes, a plurality of collecting boxes are arranged at the bottom of the filtering box body, collecting pipes are arranged at two ends of each collecting box, and one end, away from each collecting box, of each collecting pipe is communicated with the bottoms of the corresponding first cleaning boxes and second cleaning boxes respectively.
6. The mid-deep geothermal energy harvesting well pumping system of claim 5,
the bottoms of each first cleaning box and each second cleaning box are in a chamfering table structure.
CN202310943403.9A 2023-07-28 2023-07-28 Mid-deep geothermal energy collection same-well pumping-back system Active CN116717926B (en)

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