CN113340010A - Vacuum and pressure composite type groundwater source heat pump recharging device - Google Patents
Vacuum and pressure composite type groundwater source heat pump recharging device Download PDFInfo
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- CN113340010A CN113340010A CN202110638884.3A CN202110638884A CN113340010A CN 113340010 A CN113340010 A CN 113340010A CN 202110638884 A CN202110638884 A CN 202110638884A CN 113340010 A CN113340010 A CN 113340010A
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- 239000003673 groundwater Substances 0.000 title claims abstract description 7
- 239000002131 composite material Substances 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 165
- 238000012856 packing Methods 0.000 claims abstract description 73
- 238000007789 sealing Methods 0.000 claims description 41
- 238000005086 pumping Methods 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000003973 irrigation Methods 0.000 claims description 4
- 230000002262 irrigation Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000003651 drinking water Substances 0.000 abstract description 2
- 235000020188 drinking water Nutrition 0.000 abstract description 2
- 230000008676 import Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
- F24T10/13—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
- F24T10/17—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes using tubes closed at one end, i.e. return-type tubes
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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 invention relates to a vacuum and pressure composite type groundwater source heat pump recharging device, which comprises a hydraulic telescopic outer pipe, an inner pipe and a heat exchange device, wherein the hydraulic telescopic outer pipe is arranged on the inner pipe; the upper end of the inner pipe extends upwards and extends to the upper part of the hydraulic telescopic outer pipe, the lower end of the inner pipe extends downwards and extends to the lower part of the hydraulic telescopic outer pipe, and the upper part of the inner pipe is connected with a fixed sleeve arranged in the upper part of the hydraulic telescopic outer pipe in a vertical sliding mode; the upper and lower both ends of the outside of the flexible outer tube of hydraulic pressure are fixed respectively and are equipped with gasbag packing subassembly and gasbag packing subassembly down, the upper end of inner tube passes through hot water source pipeline intercommunication with heat exchange device's import, according to the height of the whole drinking-water pipe of degree of depth automatic adjustment and water injection pipe of the hot-water well of difference, ensure to carry out effectual collection to the heat source in the hot-water well of any degree of depth, can be direct after accomplishing the heat exchange recharge, improve recharge efficiency, it provides convenience with recharging for the collection of ground source heat.
Description
Technical Field
The invention relates to the technical field of geothermal collection, in particular to a vacuum and pressure combined groundwater source heat pump back irrigation device.
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, the requirement on the geological structure is high, and the recharge efficiency is low; pressure recharge is suitable for aquifers with high water level and low permeability; the vacuum recharge is mainly used for aquifers with low water level and good permeability;
when the three methods are used, the scheme can be selected only after the hot water well is specifically detected, and great inconvenience is brought to recharging.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a vacuum and pressure combined underground water source heat pump recharging device which can be used in any hot water well recharging process.
In order to achieve the purpose, the invention adopts the following technical scheme that the vacuum and pressure combined underground water source heat pump backfilling device comprises a hydraulic telescopic outer pipe inserted into a hot water well, an inner pipe which is positioned in the hydraulic telescopic outer pipe and is concentric with the hydraulic telescopic outer pipe, and a heat exchange device; the upper end of the hydraulic telescopic outer pipe is fixedly connected with a wellhead of a hot water well, the upper end of the inner pipe extends upwards and extends to the upper part of the hydraulic telescopic outer pipe, the lower end of the inner pipe extends downwards and extends to the lower part of the hydraulic telescopic outer pipe, and the upper part of the inner pipe is connected with a fixed sleeve arranged in the upper part of the hydraulic telescopic outer pipe in a vertical sliding mode;
the upper end and the lower end of the outer part of the hydraulic telescopic outer pipe are respectively fixedly provided with an upper air bag packing assembly and a lower air bag packing assembly, the middle lower part of the hydraulic telescopic outer pipe is provided with a reinjection port for communicating an annular cavity formed between the hydraulic telescopic outer pipe and the inner pipe with a hot water well, and the reinjection port is positioned above the lower air bag packing assembly; a sealing packer is fixedly arranged on the end part of the inner pipe, which is positioned in the hydraulic telescopic outer pipe;
the upper end of the inner pipe is communicated with the inlet of the heat exchange device through a hot water source pipeline, a heat source water pump is arranged on the hot water source pipeline, the water outlet of the heat exchange device is communicated with a sealed annular cavity formed by the inner pipe and the hydraulic telescopic outer pipe through a recharge pipeline, and a pressure pump is arranged on the recharge pipeline;
the hydraulic telescopic outer pipe is communicated with a sealed recharge cavity formed by sealing the inner wall of the hot water well through an upper air bag sealing assembly and a lower air bag sealing assembly and a vacuum pumping pump arranged outside the hot water well through a vacuum pumping pipeline;
the upper air bag packing assembly and the lower air bag packing assembly are communicated with an air pump arranged outside the hot water well through an air charging and discharging pipeline;
an oil port formed in the hydraulic telescopic outer pipe is communicated with an oil supply device arranged outside the hot water well through an oil supply pipeline;
the end part of the inner pipe, which is positioned outside the hot water well, is connected with a driving assembly arranged outside the hot water well, and the driving assembly drives the inner pipe to move up and down along the fixed sleeve;
the lower end of the hydraulic telescopic outer pipe is provided with a geological detection module for detecting the geological formation condition of the hot water well, the geological detection module is electrically connected with the input end of a processor, and the output end of the processor is respectively electrically connected with a vacuum pumping pump and a pressure pump;
when an underground heat source is collected, an assembly formed by the hydraulic telescopic outer pipe and the inner pipe is placed into a hot water well, the hydraulic telescopic outer pipe is controlled by the oil supply device to extend downwards to the bottom of the hot water well, and then the air pump inflates air into the upper air bag packing assembly and the lower air bag packing assembly to seal and fix the hydraulic telescopic outer pipe in the hot water well, so that the hydraulic telescopic outer pipe is fixed; the driving assembly drives the inner pipe to extend into the hydraulic telescopic outer pipe, the lower end of the inner pipe extends out of the hydraulic telescopic outer pipe, and when the sealing packer is positioned below the reinjection port, the sealing packer is opened to fix the inner pipe in the hydraulic telescopic outer pipe, so that the assembly formed by the hydraulic telescopic outer pipe and the inner pipe is installed;
the heat source water pump is started, and heat source water in the hot water well is pumped into the heat exchange device through the inner pipe to exchange heat; when the geological detection module detects that the stratum in the hot water well needs pressure reinjection; the processor controls the pressurizing pump to be started, the heat source water after heat exchange is pressurized and reinjected into an annular cavity formed by the inner pipe and the hydraulic telescopic outer pipe through a reinjection pipeline, and is injected into the stratum of the hot water well through a reinjection port, and when the geological detection module detects that the stratum in the hot water well needs vacuum reinjection; at the moment, the processor controls the pressurizing pump and the vacuum pumping pump to be started simultaneously, and the vacuum pumping pump performs vacuum pumping treatment on a sealed recharge cavity formed after the compression and expansion outer pipe and the inner wall of the hot water well are sealed and separated by the upper air bag sealing assembly and the lower air bag sealing assembly; and pressurizing and vacuumizing the heat source water subjected to heat exchange through a recharging pipeline, and reinjecting the heat source water into an annular cavity formed by the inner pipe and the hydraulic telescopic outer pipe, and injecting the heat source water into the stratum of the hot water well through a reinjection port.
Preferably, a filtering plug is fixedly arranged below the inner pipe.
Preferably, a first electromagnetic valve is arranged on a pipeline between the heat source water suction pump and the heat exchange device, a second electromagnetic valve is arranged on a recharge pipeline communicated between the pressure pump and an annular cavity formed by the inner pipe and the hydraulic telescopic outer pipe, a third electromagnetic valve is arranged on an oil supply pipeline communicated between the oil supply device and the hydraulic telescopic outer pipe, a fourth electromagnetic valve is arranged on a charge and discharge pipeline communicated with the air pump, and a fifth electromagnetic valve is arranged on a vacuum pumping pipeline communicated with the vacuum pumping pump.
Preferably, the driving assembly comprises a driving motor fixedly arranged outside the hot water well, a driving gear fixedly connected to an output shaft of the driving motor, and a driving nut sleeved outside the inner pipe and in threaded connection with the inner pipe, the bottom of the driving nut is fixedly connected to a bearing base sleeved on the inner pipe and fixed outside the hot water well, a gap is formed between the outer wall of the inner pipe and the bearing base, and a driven gear meshed with the driving gear is fixedly arranged on the driving nut.
Preferably, the upper air bag packing component and the lower air bag packing component are the same air bag packing component, the air bag packing component comprises an annular body fixedly sleeved outside the hydraulic telescopic outer pipe, and blocking circular rings are fixedly arranged at the upper end and the lower end of the annular body respectively. An expansion air bag is fixedly arranged in a space formed by the two blocking circular rings; the inflation and deflation pipeline passes through the annular body of the upper air bag packing assembly and extends to the annular body of the lower air bag packing assembly, the inflation air bag in the upper air bag packing assembly is communicated with the inflation and deflation pipeline through the upper air pipe, the upper air pipe is provided with a first air valve, the inflation air bag in the lower air bag packing assembly is communicated with the inflation and deflation pipeline through the lower air pipe, and the lower air pipe is provided with a second air valve.
Preferably, the hydraulic telescopic outer tube comprises an outer tube body and an inner water tube arranged in the outer tube body, the inner water tube is connected with the outer tube body in a sealing and sliding manner, an annular cavity is arranged on the inner wall of the outer tube body, the annular cavity is sealed through the outer wall of the inner water tube to form an oil cavity, a sealing piston is fixedly arranged at the end part of the inner water tube positioned in the annular cavity, the outer wall of the sealing piston is connected with the inner wall of the oil cavity in a sealing and sliding manner, an upper oil inlet nozzle and a lower oil inlet nozzle which are communicated with the oil cavity are respectively arranged on the outer tube body, and the upper oil inlet nozzle and the lower oil inlet nozzle are respectively positioned at the upper end part and the lower end part of the oil cavity; the upper oil inlet nozzle and the lower oil inlet nozzle are respectively communicated with an oil supply device through oil supply pipelines; the upper air bag packing assembly is fixedly arranged on the outer barrel, and the lower air bag packing assembly is fixed on the end part of the lower part of the inner water pipe.
Preferably, the filtering plug comprises a plug cylinder, the upper end of the plug cylinder is provided with a plug connector fixedly connected with the lower end of the inner pipe, the plug cylinder is provided with a plurality of water inlets communicated with the inside of the plug cylinder, and the outside of the plug cylinder is fixedly provided with a layer of filter screen.
The invention has the beneficial effects that: according to the whole drinking-water pipe of degree of depth automatic adjustment and the height of water injection pipe of hot-water well of difference, ensure to carry out effectual collection to the heat source in the hot-water well of any degree of depth, can be direct simultaneously after accomplishing the heat exchange and recharge, the efficiency of recharging is improved, geological stratification in the hot-water well is gathered through gathering the sensor simultaneously, according to the message of gathering, control adopts which kind of mode to recharge when recharging, ensure that the device can both carry out effectual use in what kind of hot-water well heat source's exploitation recharging, collection and recharging for the ground source heat provide convenience.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the airbag packing assembly of the present invention;
FIG. 3 is a schematic view of the filtering plug of the present invention;
fig. 4 is a schematic structural view of a hydraulic telescopic outer tube according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and 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.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example 1
The vacuum and pressure combined underground water source heat pump backfilling device shown in fig. 1 comprises a hydraulic telescopic outer pipe 1 inserted into a hot water well, wherein the upper end of the hydraulic telescopic outer pipe 1 is fixedly connected with a well mouth of the hot water well through sealed cement pouring; the inner pipe 2 and the heat exchange device 7 are positioned in the hydraulic telescopic outer pipe 1 and are concentric with the hydraulic telescopic outer pipe 1; the hydraulic telescopic outer pipe 1 and the hydraulic telescopic inner pipe 2 are both made of stainless steel anti-corrosion and high-temperature-resistant materials, the heat exchange device 7 is the most common heat exchange equipment in the field at present, and the specific structure of the heat exchange device is not described in detail in the embodiment; the upper end of the inner pipe 2 extends upwards and extends to the upper part of the hydraulic telescopic outer pipe 1, the lower end of the inner pipe 2 extends downwards and extends to the lower part of the hydraulic telescopic outer pipe 1, and the upper part of the inner pipe 2 is connected with a fixed sleeve 18 arranged in the upper part of the hydraulic telescopic outer pipe 1 in a vertical sliding mode; the inner pipe 2 is used for pumping heat source water in a hot well, and an annular cavity formed by the inner pipe 2 and the hydraulic telescopic outer pipe 1 is used for recharging the heat source water subjected to heat exchange; the fixed sleeve 18 is fixedly connected with the inner part of the upper end of the hydraulic telescopic outer tube 1 in a sealing manner, specifically, a transverse bulge parallel to the central line of the fixed sleeve 18 is arranged on the inner wall of the fixed sleeve 18 and is matched with a transverse groove arranged on the outer wall of the inner tube 2, so that the inner tube 2 can move up and down along the fixed sleeve 18 and cannot rotate relatively; the upper end of the inner pipe 2 is provided with an external thread which is in threaded connection with a fixed nut, so that the inner pipe 2 can move up and down in the hydraulic telescopic outer pipe 1 when rotating;
the number of the hot water wells is two, and a water pumping and recharging pipe fitting formed by the hydraulic telescopic outer pipe 1 and the hydraulic telescopic inner pipe 2 is inserted into each hot water well;
an upper air bag packing component 4 and a lower air bag packing component 3 are respectively fixedly arranged at the upper end and the lower end of the outer part of the hydraulic telescopic outer pipe 1, a reinjection port 6 for communicating an annular cavity formed between the hydraulic telescopic outer pipe 1 and the inner pipe 2 with a hot water well is arranged at the middle lower part of the hydraulic telescopic outer pipe 1, and the reinjection port 6 is positioned above the lower air bag packing component 3; a sealing packer 5 is fixedly arranged on the end part of the inner pipe 2 positioned in the hydraulic telescopic outer pipe 1; the upper air bag packing component 4 and the lower air bag packing component 3 are fixedly sleeved on the hydraulic telescopic outer pipe 1, the upper air bag packing component 4 is fixed at the fixed end of the hydraulic telescopic outer pipe 1, the lower air bag packing component 3 is fixed at the telescopic end of the hydraulic telescopic outer pipe 1, and an oil port formed in the hydraulic telescopic outer pipe 1 is communicated with an oil supply device 11 arranged outside the hot water well through an oil supply pipeline; the oil supply device 11 position hydraulic telescopic outer pipe 1 supplies oil or discharges oil to drive the hydraulic telescopic outer pipe to finish the work of extension or shortening; the upper air bag packing component 4 and the lower air bag packing component 3 are communicated with an air pump 13 arranged outside the hot water well through an air charging and discharging pipeline 25; inflating the upper air bag packing component 4 and the lower air bag packing component 3 through an air pump 13, wherein the upper air bag packing component 4 and the lower air bag packing component 3 expand to seal and fix the hydraulic telescopic outer pipe 1 and a space formed between the upper air bag packing component 4 and the lower air bag packing component 3 of the hot water well, so as to form a sealed recharge annular cavity;
during construction and installation, after an assembly formed by the hydraulic telescopic outer pipe 1 and the inner pipe 2 is placed at a designed position in a hot water well, the upper end of the hydraulic telescopic outer pipe 1 and the well mouth of the hot water well are sealed and poured through cement, then the upper air bag packing assembly 4 and the lower air bag packing assembly 3 are inflated through the air pump 13, the upper air bag packing assembly 4 and the lower air bag packing assembly 3 are in sealing contact with the inner wall of the hot water well, the hydraulic telescopic outer pipe 1 is fixedly sealed in the hot water well, and meanwhile, a sealed recharge annular cavity is formed by the upper air bag packing assembly 4 and the lower air bag packing assembly 3 through quality inspection; the inner pipe 2 is driven to move up and down along the fixed sleeve 18 by a driving assembly arranged at the end part of the inner pipe 2 outside the hot water well and outside the hot water well; after the inner pipe 2 is driven to a set position, a sealing packer 5 is started to fixedly seal the inner pipe 2 in the hydraulic telescopic outer pipe 1, the sealing packer 5 is a sealing packer commonly used in the field of extracting heat source water or petroleum at present, and the structure of the sealing packer is not described in detail herein;
finally, the upper end of the inner pipe 2 is communicated with the inlet of a heat exchange device 7 through a hot water source pipeline, a heat source water pump 8 is arranged on the hot water source pipeline, the water outlet of the heat exchange device 7 is communicated with a sealed annular cavity formed by the inner pipe 2 and the hydraulic telescopic outer pipe 1 through a recharging pipeline, and a pressure pump 10 is arranged on the recharging pipeline; when pressurization recharging is needed, the pressurizing pump 10 is started to pressurize the heat source water after heat exchange to an annular cavity formed by the hydraulic telescopic outer pipe and the inner pipe, and then the heat source water enters the recharging annular cavity through the recharging port to be pressurized and seeped into the stratum;
a sealed recharge cavity formed after the hydraulic telescopic outer pipe 1 and the inner wall of the hot water well are sealed and separated through the upper air bag sealing component 4 and the lower air bag sealing component 3 is communicated with a vacuum pumping pump 15 arranged outside the hot water well through a vacuum pumping pipeline; when vacuum recharging is needed, the sealed recharging annular cavity is vacuumized through the vacuum pumping pump 15 to form negative pressure, and heat source water after heat exchange enters the recharging annular cavity to be recharged.
The lower end of the hydraulic telescopic outer pipe 1 is provided with a geological detection module 25 for detecting the geological formation condition of the hot water well, the geological detection module 25 is electrically connected with the input end of a processor, and the output end of the processor is respectively electrically connected with the vacuum pumping pump 15 and the pressure pump 10; the geological detection module 25 is used for detecting the stratum condition in the hot water well, and belongs to the conditions of physical blockage (bubbles and suspended particles), microbial blockage (different flora growth and biomembrane), and chemical blockage (water-rock reaction, ion exchange and dissolution precipitation), and ensures that the recharge is carried out by adopting any mode.
When an underground heat source is collected, an assembly formed by the hydraulic telescopic outer pipe 1 and the inner pipe 2 is placed in a hot water well, the oil supply device 11 controls the hydraulic telescopic outer pipe 1 to extend downwards to the bottom of the hot water well, and then the air pump 13 inflates air into the upper air bag packing assembly 4 and the lower air bag packing assembly 3 to hermetically fix the hydraulic telescopic outer pipe 1 in the hot water well, so that the hydraulic telescopic outer pipe 1 is fixed; then the driving assembly drives the inner pipe 2 to enter the hydraulic telescopic outer pipe, the lower end of the inner pipe 2 extends out of the hydraulic telescopic outer pipe 1, and when the sealing packer 5 is positioned below the back injection port 6, the sealing packer 5 is opened to fix the inner pipe 2 in the hydraulic telescopic outer pipe 1, and the assembly formed by the hydraulic telescopic outer pipe 1 and the inner pipe 2 is installed;
the heat source water pump 8 is started, and heat source water in the hot water well is pumped into the heat exchange device 7 through the inner pipe 2 for heat exchange; when the geological detection module 25 detects that the stratum in the hot water well needs pressure reinjection; at the moment, the processor controls the pressurizing pump 10 to be started, the heat source water after heat exchange is pressurized and reinjected into an annular cavity formed by the inner pipe 2 and the hydraulic telescopic outer pipe 1 through a reinjection pipeline, and is injected into the stratum of the hot water well through a reinjection port 6, and when the geological detection module 25 detects that the stratum in the hot water well needs vacuum reinjection; at the moment, the processor controls the pressurizing pump 10 and the vacuum pumping pump 15 to be started simultaneously, and the vacuum pumping pump 15 performs vacuum pumping treatment on a sealed recharge cavity formed after the compression and expansion outer pipe 1 and the inner wall of the hot water well are sealed by the upper air bag sealing assembly 4 and the lower air bag sealing assembly 3; the heat source water after heat exchange is pressurized and vacuumized through a recharging pipeline and is reinjected into an annular cavity formed by the inner pipe 2 and the hydraulic telescopic outer pipe 1, and is injected into the stratum of the hot water well through a reinjection port 6.
The effective service environment who has improved the device, no matter can both exploit and recharge heat source water through this equipment at the hot-water well of any degree of depth, brings very big convenience for exploiting or recharging.
Further fixed being equipped with in the below of inner tube 2 filters end cap 24, should filter end cap 24 and be used for collecting the spheroid of opening sealed packer, can filter the heat source water of exploitation simultaneously, avoids impurity to be taken out and causes equipment to take place the condition of blockking up or damaging.
Further, in order to ensure that the flow rate of mining, the reinjection flow rate, the inflation size, the oil supply flow rate and the vacuumizing efficiency can be effectively controlled, a first electromagnetic valve 9 is arranged on a pipeline between the heat source water suction pump 8 and the heat exchange device 7, a second electromagnetic valve 17 is arranged on a recharging pipeline communicated between the pressure pump 10 and an annular cavity formed by the inner pipe 2 and the hydraulic telescopic outer pipe 1, a third electromagnetic valve 12 is arranged on an oil supply pipeline communicated between the oil supply device 11 and the hydraulic telescopic outer pipe, a fourth electromagnetic valve 14 is arranged on a charging and discharging pipeline 25 communicated with the air pump 13, and a fifth electromagnetic valve 16 is arranged on a vacuumizing pipeline communicated with the vacuumizing pump 15. All solenoid valves can be connected with the treater electricity in this embodiment, also can be connected with the well control center electricity of this device, conveniently control the flow of whole device heat source water and gas, are conveniently overhauing simultaneously.
Preferably, the driving assembly comprises a driving motor 20 fixedly arranged outside the hot water well, a driving gear 21 fixedly connected to an output shaft of the driving motor 20, and a driving nut 22 sleeved outside the inner tube 2 and in threaded connection with the inner tube 2, the bottom of the driving nut 22 is fixedly connected to a bearing base 19 sleeved on the inner tube 2 and fixed outside the hot water well, a gap is formed between the outer wall of the inner tube 2 and the bearing base 19, and a driven gear 22 meshed with the driving gear 21 is fixedly arranged on the driving nut 22. Drive nut and bearing base 19 fixed connection, ensure drive nut can rotate, and can not take place relative movement, it is specific drive motor 20 passes through intermeshing's driving gear and driven gear drive nut 22 rotates, because go, drive nut and inner tube 2 pass through threaded connection, consequently drive nut is at the pivoted in-process, drives inner tube 2 along drive nut 22 reciprocates, drives the inner tube extends or returns to hydraulic stretching outer tube 1 is interior.
Example 2
Based on embodiment 1, the upper and lower air bag packing assemblies 4 and 3 are the same air bag packing assembly, and as shown in fig. 2, the air bag packing assembly includes an annular body 301 fixedly sleeved outside the hydraulic telescopic outer tube 1, and blocking rings 302 are fixedly disposed at upper and lower ends of the annular body 301 respectively. An inflatable air bag 303 is fixedly arranged in a space formed by the two blocking circular rings 302; the inflation and deflation pipeline 25 passes through the annular body 301 of the upper air bag packing component 4 and extends to the annular body 301 of the lower air bag packing component 3, the inflation air bag 303 in the upper air bag packing component 4 is communicated with the inflation and deflation pipeline 25 through the upper air pipe 27, the upper air pipe 27 is provided with a first air valve 26, the inflation air bag 303 in the lower air bag packing component 3 is communicated with the inflation and deflation pipeline 25 through the lower air pipe 29, and the lower air pipe 29 is provided with a second air valve 28. The blocking ring 302 and the ring body 301 are integrated to form an annular groove, so that the expansion airbag 303 can be stably fixed on the hydraulic telescopic outer tube, specifically, when the hydraulic telescopic outer tube is used, the inflation and deflation pump inflates through the inflation and deflation pipeline 25, before inflation begins, the first air valve 26 is opened, the expansion airbag 303 in the upper airbag packing assembly can be inflated through the inflation and deflation pipeline 25, the upper fixed end of the hydraulic telescopic outer tube 1 is sealed and fixed, when inflation is performed, the night-pressing telescopic outer tube 1 continues to extend, after a specified position is reached, the first air valve 26 is closed, the second air valve 28 is opened, and the expansion airbag 303 in the lower airbag packing assembly is inflated to fix the telescopic end of the hydraulic telescopic outer tube, so that a sealed annular cavity is formed.
Example 3
On the basis of embodiment 1, as shown in fig. 4, the hydraulic telescopic outer tube 1 includes an outer tube 101 and an inner water tube 102 disposed in the outer tube 101, and the inner water tube 102 is connected with the outer tube 101 in a sealing and sliding manner, an annular cavity 103 is disposed on the inner wall of the outer tube 101, the annular cavity 103 forms an oil cavity after being sealed by the outer wall of the inner water tube 102, a sealing piston 104 is fixedly disposed on the end portion of the inner water tube 102 located in the annular cavity 103, the outer wall of the sealing piston 104 is connected with the inner wall of the oil cavity in a sealing and sliding manner, an upper oil inlet 105 and a lower oil inlet 106 communicated with the oil cavity are respectively disposed on the outer tube 101, and the upper oil inlet 105 and the lower oil inlet 106 are respectively located at the upper end portion and the lower end portion of the oil cavity; the upper oil inlet nozzle 105 and the lower oil inlet nozzle 106 are respectively communicated with the oil supply device 11 through oil supply pipelines; the upper air bag packing component 4 is fixedly arranged on the outer cylinder body 101, and the lower air bag packing component 3 is fixed on the end part of the lower part of the inner water pipe 102. When the hydraulic telescopic outer tube 1 needs to be extended, the oil supply device supplies oil to the upper oil inlet nozzle 105, oil is fed into an oil cavity at the upper end of the sealing piston 104, the sealing piston 104 is pushed to move downwards to drive the inner water tube 102 to move downwards, the hydraulic telescopic outer tube 1 is extended downwards to achieve extension of the hydraulic telescopic outer tube, when the hydraulic telescopic outer tube needs to be shortened, the oil supply device supplies oil to the lower oil inlet nozzle 106, oil is returned from the upper oil inlet nozzle to push the sealing piston 104 to move upwards to drive the inner water tube 102 to move upwards, and retraction of the hydraulic telescopic outer tube 1 is achieved.
Example 4
On the basis of embodiment 1, in order to ensure that hot water can be effectively filtered when the hot water is extracted, as shown in fig. 3, the filtering plug 24 includes a plug cylinder 2401, the upper end of the plug cylinder 2401 is provided with a plug connector 2404 fixedly connected with the lower end of the inner pipe 2, the plug cylinder 2401 is provided with a plurality of water inlets 2402 communicated with the inside of the plug cylinder 2401, and the outside of the plug cylinder 2401 is fixedly provided with a layer of filter screen 2403.
The above embodiments are merely illustrative of the present invention, and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (7)
1. A vacuum and pressure combined underground water source heat pump backfilling device is characterized by comprising a hydraulic telescopic outer pipe (1) inserted into a hot water well, an inner pipe (2) which is positioned in the hydraulic telescopic outer pipe (1) and is concentric with the hydraulic telescopic outer pipe (1), and a heat exchange device (7); the upper end of the hydraulic telescopic outer pipe (1) is fixedly connected with a wellhead of a hot water well, the upper end of the inner pipe (2) extends upwards and extends to the upper part of the hydraulic telescopic outer pipe (1), the lower end of the inner pipe (2) extends downwards and extends to the lower part of the hydraulic telescopic outer pipe (1), and the upper part of the inner pipe (2) is connected with a fixed sleeve (18) arranged in the upper part of the hydraulic telescopic outer pipe (1) in a vertical sliding mode;
an upper air bag packing assembly (4) and a lower air bag packing assembly (3) are respectively and fixedly arranged at the upper end and the lower end of the outer part of the hydraulic telescopic outer pipe (1), a reinjection port (6) for communicating an annular cavity formed between the hydraulic telescopic outer pipe (1) and the inner pipe (2) with a hot water well is arranged at the middle lower part of the hydraulic telescopic outer pipe (1), and the reinjection port (6) is positioned above the lower air bag packing assembly (3); a sealing packer (5) is fixedly arranged on the end part of the inner pipe (2) positioned in the hydraulic telescopic outer pipe (1);
the upper end of the inner pipe (2) is communicated with an inlet of a heat exchange device (7) through a hot water source pipeline, a heat source water pump (8) is arranged on the hot water source pipeline, a water outlet of the heat exchange device (7) is communicated with a sealed annular cavity formed by the inner pipe (2) and the hydraulic telescopic outer pipe (1) through a recharging pipeline, and a pressure pump (10) is arranged on the recharging pipeline;
the hydraulic telescopic outer pipe (1) is communicated with the inner wall of the hot water well through a sealed recharge cavity formed after the upper air bag packing component (4) and the lower air bag packing component (3) are packed, and a vacuum pumping pump (15) arranged outside the hot water well is communicated through a vacuum pumping pipeline;
the upper air bag packing assembly (4) and the lower air bag packing assembly (3) are communicated with an air pump (13) arranged outside the hot water well through an air charging and discharging pipeline (25);
an oil port formed in the hydraulic telescopic outer pipe (1) is communicated with an oil supply device (11) arranged outside the hot water well through an oil supply pipeline;
the end part of the inner pipe (2) positioned outside the hot water well is connected with a driving assembly arranged outside the hot water well, and the driving assembly drives the inner pipe (2) to move up and down along a fixed sleeve (18);
the lower end of the hydraulic telescopic outer pipe (1) is provided with a geological detection module (25) for detecting the geological formation condition of the hot water well, the geological detection module (25) is electrically connected with the input end of a processor, and the output end of the processor is respectively electrically connected with a vacuum pumping pump (15) and a pressure pump (10);
when an underground heat source is collected, a component formed by the hydraulic telescopic outer pipe (1) and the inner pipe (2) is placed in a hot water well, the oil supply device (11) controls the hydraulic telescopic outer pipe (1) to extend downwards to the bottom of the hot water well, the air pump (13) inflates air into the upper air bag packing component (4) and the lower air bag packing component (3) to hermetically fix the hydraulic telescopic outer pipe (1) in the hot water well, and the fixation of the hydraulic telescopic outer pipe (1) is completed; then the driving assembly drives the inner pipe (2) to extend into the hydraulic telescopic outer pipe (1), the lower end of the inner pipe (2) extends out of the hydraulic telescopic outer pipe (1), and when the sealing packer (5) is located below the reinjection port (6), the sealing packer (5) is opened to fix the inner pipe (2) in the hydraulic telescopic outer pipe (1), and the assembly formed by the hydraulic telescopic outer pipe (1) and the inner pipe (2) is installed;
the heat source water pump (8) is started, and heat source water in the hot water well is pumped into the heat exchange device (7) through the inner pipe (2) to exchange heat; when the geological detection module (25) detects that the stratum in the hot water well needs to be subjected to pressure reinjection; at the moment, the processor controls the pressurizing pump (10) to be started, the heat source water after heat exchange is pressurized and reinjected into an annular cavity formed by the inner pipe (2) and the hydraulic telescopic outer pipe (1) through a reinjection pipeline, and is injected into the stratum of the hot water well through a reinjection opening (6), and when the geological detection module (25) detects that the stratum in the hot water well needs vacuum reinjection; at the moment, the processor controls the pressurization pump (10) and the vacuum pumping pump (15) to be started simultaneously, and the vacuum pumping pump (15) performs vacuum pumping treatment on a sealed recharge cavity formed after the compression and expansion outer pipe (1) and the inner wall of the hot water well are sealed by the upper air bag sealing assembly (4) and the lower air bag sealing assembly (3); and the heat source water after heat exchange is pressurized and vacuumized through a recharging pipeline and is reinjected into an annular cavity formed by the inner pipe (2) and the hydraulic telescopic outer pipe (1), and is injected into the stratum of the hot water well through a reinjection port (6).
2. The vacuum and pressure combined underground water source heat pump refluence device as claimed in claim 1, wherein a filtering plug (24) is fixedly arranged below the inner pipe (2).
3. The vacuum and pressure combined groundwater source heat pump recharging device according to claim 1, wherein a first electromagnetic valve (9) is arranged on a pipeline between the heat source water pump (8) and the heat exchange device (7), a second electromagnetic valve (17) is arranged on a recharging pipeline communicated between the pressure pump (10) and an annular cavity formed by the inner pipe (2) and the hydraulic telescopic outer pipe (1), a third electromagnetic valve (12) is arranged on an oil supply pipeline communicated between the oil supply device (11) and the hydraulic telescopic outer pipe, a fourth electromagnetic valve (14) is arranged on an air charging and discharging pipeline (25) communicated with the air pump (13), and a fifth electromagnetic valve (16) is arranged on an air pumping pipeline communicated with the vacuum pump (15).
4. The vacuum and pressure combined underground water source heat pump back irrigation device according to claim 1, wherein the driving assembly comprises a driving motor (20) fixedly arranged outside the hot water well, a driving gear (21) fixedly connected to an output shaft of the driving motor (20), and a driving nut (22) sleeved outside the inner pipe (2) and in threaded connection with the inner pipe (2), the bottom of the driving nut (22) is fixedly connected with a bearing base (19) sleeved on the inner pipe (2) and fixed outside the hot water well, a gap is formed between the outer wall of the inner pipe (2) and the bearing base (19), and a driven gear (22) meshed with the driving gear (21) is fixedly arranged on the driving nut (22).
5. The vacuum and pressure combined underground water source heat pump back irrigation device as claimed in claim 1, wherein the upper air bag packing assembly (4) and the lower air bag packing assembly (3) are the same air bag packing assembly, the air bag packing assembly comprises an annular body (301) fixedly sleeved outside the hydraulic telescopic outer pipe (1), and blocking rings (302) are fixedly arranged at the upper end and the lower end of the annular body (301) respectively. An expansion air bag (303) is fixedly arranged in a space formed by the two blocking circular rings (302); the inflation and deflation pipeline (25) penetrates through a ring body (301) of the upper air bag packing component (4) and extends to a ring body (301) of the lower air bag packing component (3), an inflation air bag (303) in the upper air bag packing component (4) is communicated with the inflation and deflation pipeline (25) through an upper air pipe (27), a first air valve (26) is arranged on the upper air pipe (27), the inflation air bag (303) in the lower air bag packing component (3) is communicated with the inflation and deflation pipeline (25) through a lower air pipe (29), and a second air valve (28) is arranged on the lower air pipe (29).
6. The vacuum and pressure combined groundwater source heat pump refluence irrigation device according to claim 1, it is characterized in that the hydraulic telescopic outer pipe (1) comprises an outer cylinder body (101) and an inner water pipe (102) arranged in the outer cylinder body (101), the inner water pipe (102) is connected with the outer cylinder body (101) in a sealing and sliding way, the inner wall of the outer cylinder body (101) is provided with an annular cavity body (103), the annular cavity (103) forms an oil cavity after being sealed by the outer wall of the inner water pipe (102), a sealing piston (104) is fixedly arranged at the end part of the inner water pipe (102) positioned in the annular cavity (103), the outer wall of the sealing piston (104) is connected with the inner wall of the oil cavity in a sealing and sliding way, an upper oil inlet nozzle (105) and a lower oil inlet nozzle (106) which are communicated with the oil cavity are respectively arranged on the outer cylinder body (101), and the upper oil inlet nozzle (105) and the lower oil inlet nozzle (106) are respectively positioned at the upper end part and the lower end part of the oil cavity; the upper oil inlet nozzle (105) and the lower oil inlet nozzle (106) are respectively communicated with the oil supply device (11) through oil supply pipelines; the upper air bag packing assembly (4) is fixedly arranged on the outer cylinder body (101), and the lower air bag packing assembly (3) is fixedly arranged on the end part of the lower part of the inner water pipe (102).
7. The groundwater source heat pump recharging device of claim 2, wherein the filtering plug (24) comprises a plug cylinder (2401), a plug joint (2404) fixedly connected with the lower end of the inner pipe (2) is arranged at the upper end of the plug cylinder (2401), a plurality of water inlets (2402) communicated with the inside of the plug cylinder (2401) are arranged on the plug cylinder (2401), and a layer of filter screen (2403) is fixedly arranged outside the plug cylinder (2401).
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| CN202110638884.3A CN113340010B (en) | 2021-06-08 | 2021-06-08 | Vacuum and pressure composite type groundwater source heat pump recharging device |
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