CN210801483U - Underground hot water recycling system - Google Patents
Underground hot water recycling system Download PDFInfo
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- CN210801483U CN210801483U CN201921728443.7U CN201921728443U CN210801483U CN 210801483 U CN210801483 U CN 210801483U CN 201921728443 U CN201921728443 U CN 201921728443U CN 210801483 U CN210801483 U CN 210801483U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/40—Geothermal heat-pumps
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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 underground hot water recycling system comprises a cluster shallow layer extraction well, a cluster deep layer extraction well, an equipment acid washing system, a water source heat pump air conditioning system, a recharge water storage tank, a cluster shallow layer recharge first well, a cluster shallow layer recharge second well, a cluster deep layer recharge first well, a cluster deep layer recharge second well and a water-bearing layer fracturing permeability-increasing standby system, wherein the cluster shallow layer extraction well, the cluster deep layer extraction well, the equipment acid washing system and the recharge water storage tank are respectively connected with the water source heat pump air conditioning system, the recharge water storage tank is respectively connected with the equipment acid washing system, the cluster shallow layer recharge first well, the cluster shallow layer recharge second well, the cluster deep layer recharge first well and the cluster deep layer recharge second well, and the water-bearing layer fracturing permeability-increasing standby system is respectively connected with the cluster shallow layer recharge first well, the cluster shallow layer recharge second well, the cluster deep layer recharge first well and the cluster deep layer recharge second well. The utility model discloses can effectively prevent "hot short circuit", but regular cleaning equipment dirt can increase the permeability on recharge stratum, solves the difficult problem of recharging.
Description
Technical Field
The utility model relates to a geothermal resource's development and utilization field, specific theory relates to an underground hot water cyclic utilization system.
Background
Energy shortage and environmental pollution are two prominent problems facing the current society. Geothermal resources are used as green and renewable energy sources and have huge development potential. The scientific development and utilization of geothermal resources in China started from the 70 th century, and the development and utilization scale is rapidly enlarged after 21 st century, wherein the underground geothermal resources are directly or indirectly applied to various fields of life, and obvious social, economic and environmental benefits are brought.
Although the underground hot water resource is used as a renewable and environment-friendly new energy resource, the method has wide development prospect. But still faces many problems in the aspect of developing and utilizing technology. For example, in a project with a large cooling and heating load, long-term operation of the heat pump system will cause changes in the geothermal field due to so-called "heat accumulation" and "cold cavern" in the recharge target aquifer or imbalance in the formation heat budget. The extraction well and the recharge well are too close to each other, so that thermal short circuit is easily caused, and the problems of difficult recharge, low recharge rate, easy scaling of equipment and the like exist.
In order to solve the above problems, people are always seeking an ideal technical solution.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an underground hot water cyclic utilization system, the utility model discloses can effectively prevent "hot short circuit", but regular cleaning equipment dirt can increase the permeability on recharge stratum, solves the difficult problem of recharging.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the underground hot water recycling system comprises a cluster shallow layer extraction well, a cluster deep layer extraction well, an equipment pickling system, a water source heat pump air-conditioning system, a recharging water storage tank, a cluster shallow layer recharging first well, a cluster shallow layer recharging second well, a cluster deep layer recharging first well, a cluster deep layer recharging second well and a water-bearing layer fracturing anti-reflection standby system, wherein the cluster shallow layer extraction well is connected with the water source heat pump air-conditioning system through a first water pumping pipeline, a first water pump and a first digital display flow control valve are arranged on the first water pumping pipeline, the cluster deep layer extraction well is connected with the water source heat pump air-conditioning system through a second water pumping pipeline, a second water pump and a second digital display flow control valve are arranged on the second water pumping pipeline, the equipment pickling system is connected with the water source heat pump air-conditioning system through a third water pumping pipeline, a third water pump and a third digital display flow control valve are arranged on the third water pumping pipeline, the water source heat pump air-conditioning system is connected with the recharging water storage tank through, a fourth water pump and a fourth digital display flow control valve are arranged on the first drainage pipeline, the recharge water storage tank is connected with the equipment pickling system through a second drainage pipeline, a fifth water pump and a fifth digital display flow control valve are arranged on the second drainage pipeline, the recharge water storage tank is connected with the cluster shallow recharge first well through a first recharge pipeline, a sixth water pump and a sixth digital display flow control valve are arranged on the first recharge pipeline, the recharge water storage tank is connected with the cluster shallow recharge second well through a second recharge pipeline, a seventh water pump and a seventh digital display flow control valve are arranged on the second recharge pipeline, the recharge water storage tank is connected with the cluster deep recharge first well through a third recharge pipeline, an eighth water pump and an eighth digital display flow control valve are arranged on the third recharge pipeline, the recharge water storage tank is connected with the cluster deep recharge second well through a fourth recharge pipeline, and a ninth water pump and a ninth digital display flow control valve are arranged on the fourth recharge pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster shallow recharge first well through a first fracturing pipeline, a tenth water pump and a tenth digital control valve are arranged on the first fracturing pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster shallow recharge second well through a second fracturing pipeline, an eleventh water pump and an eleventh digital control valve are arranged on the second fracturing pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster deep recharge first well through a third fracturing pipeline, a twelfth water pump and a twelfth digital control valve are arranged on the third fracturing pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster deep recharge second well through a fourth fracturing pipeline, a thirteenth water pump and a thirteenth digital control valve are arranged on the fourth fracturing pipeline, and the water source heat pump air-conditioning system is respectively connected with a water inlet pipeline for introducing the water of residents and a water outlet pipeline for discharging the water of residents;
the storage tank of the equipment pickling system is stored with a prepared acid solution, and a vent valve, a pressure gauge and a PH meter are arranged on the storage tank of the equipment pickling system.
The cluster shallow layer extraction well is a vertical well vertically driven into a relatively shallow layer water-containing layer, the cluster shallow layer recharge first well and the cluster shallow layer recharge second well are horizontal wells driven into the relatively shallow layer water-containing layer, mineshafts of the cluster shallow layer recharge first well and the cluster shallow layer recharge second well horizontally extend in the relatively shallow layer water-containing layer and are far away from the mineshafts of the cluster shallow layer extraction well, the cluster deep layer extraction well is a vertical well vertically driven into the relatively deep layer water-containing layer, the cluster deep layer recharge first well and the cluster deep layer recharge second well are horizontal wells driven into the relatively deep layer water-containing layer, and the mineshafts of the cluster deep layer recharge first well and the cluster deep layer recharge second well horizontally extend in the relatively deep layer water-containing layer and are far away from the mineshafts of the cluster deep layer extraction well;
casings are inserted into the cluster shallow extraction well, the cluster shallow recharge first well, the cluster shallow recharge second well, the cluster deep extraction well, the cluster deep recharge first well and the cluster deep recharge second well, cement is poured into annular gaps between the inner walls of the cluster shallow extraction well, the cluster shallow recharge first well, the cluster shallow recharge second well, the cluster deep extraction well, the cluster deep recharge first well and the cluster deep recharge second well and the corresponding casings, and the casings are made of carbon steel.
First pipeline, the second pipeline that draws water, the third pipeline that draws water, first drainage pipe, the second drainage pipe, first recharge pipeline, the second pipeline that recharges, the third pipeline that recharges, the fourth pipeline that recharges, inlet channel and outlet conduit are transversal vacuum pipe who personally submits cyclic annular sandwich structure, and cyclic annular sandwich space is the vacuum, and the material of vacuum pipe adopts PPR, and the outside parcel of vacuum pipe has the one deck insulating layer, is equipped with vacuum meter and evacuation valve on the vacuum pipe.
By adopting the technical scheme, the working method of the underground hot water recycling system comprises the following working modes:
the first mode of operation: when the weather is hot, collecting underground water with lower temperature from a relatively shallow water-containing layer by using the cluster shallow extraction well, performing heat exchange between the underground water with lower temperature and residential water in a water source heat pump air conditioning system to realize a refrigeration effect, and enabling the underground water after heat exchange to enter a recharge water storage tank and be recharged into the relatively shallow water-containing layer through a cluster shallow recharge first well and a cluster shallow recharge second well respectively;
the second working mode is as follows: when the weather is cold, the cluster deep extraction well is used for collecting underground water with higher temperature from the relatively deep aquifer, the underground water with higher temperature and residential water exchange heat in the water source heat pump air conditioning system to realize the heating effect, and the underground water after heat exchange enters the recharge water storage tank and is recharged to the relatively deep aquifer through the cluster deep recharge first well and the cluster deep recharge second well respectively.
The first operating mode is specifically as follows: starting a first water pump, a fourth water pump, a sixth water pump and a seventh water pump, opening a first digital display flow control valve, a fourth digital display flow control valve, a sixth digital display flow control valve and a seventh digital display flow control valve, pumping underground water with lower temperature from a cluster shallow extraction well through a first water pumping pipeline, enabling the underground water with lower temperature to enter a water source heat pump air conditioning system, enabling resident water to enter the water source heat pump air conditioning system through a water inlet pipeline to exchange heat with the underground water, enabling the resident water to be cooled and flow out of a water outlet pipeline, and achieving a refrigeration effect; the underground water after heat exchange enters the recharge water storage tank through the fourth water pump and the fourth digital display flow control valve and the first drainage pipeline, the underground water in the recharge water storage tank enters the cluster shallow recharge first well through the sixth water pump and the sixth digital display flow control valve and the first recharge pipeline, and the underground water in the recharge water storage tank enters the cluster shallow recharge second well through the seventh water pump and the seventh digital display flow control valve and the second recharge pipeline.
The second working mode is specifically as follows: starting a second water pump, a fourth water pump, an eighth water pump and a ninth water pump, opening a second digital display flow control valve, a fourth digital display flow control valve, an eighth digital display flow control valve and a ninth digital display flow control valve, pumping underground water with higher temperature from the cluster deep extraction well through a second water pumping pipeline, enabling the underground water with higher temperature to enter a water source heat pump air conditioning system, enabling resident water to enter the water source heat pump air conditioning system through a water inlet pipeline to exchange heat with the underground water, enabling the temperature of the resident water to rise and flow out of a water outlet pipeline, and achieving a heating effect; the underground water after heat exchange enters the recharge water storage tank through the fourth water pump and the fourth digital display flow control valve and the first drainage pipeline, the underground water in the recharge water storage tank enters the first cluster deep recharge well through the eighth water pump and the eighth digital display flow control valve and the third recharge pipeline, and the underground water in the recharge water storage tank enters the second cluster deep recharge well through the ninth water pump and the ninth digital display flow control valve and the fourth recharge pipeline, so that the underground water in the recharge water storage tank can be recharged to the relatively deep water-containing layer.
During the working period of the cluster shallow extraction well, the cluster shallow recharge first well and the cluster shallow recharge second well, the cluster deep extraction well, the cluster deep recharge first well, the cluster deep recharge second well and the relative deep aquifer in which the cluster deep extraction well, the cluster deep recharge first well and the cluster deep recharge second well enter an underground water compensation and temperature recovery period; during the working period of the cluster deep extraction well, the cluster deep recharge first well and the cluster deep recharge second well, the cluster shallow extraction well, the cluster shallow recharge first well, the cluster shallow recharge second well and the relative shallow aquifer enter the underground water compensation and temperature recovery period.
In the shutdown time period, the acid solution in the equipment pickling system enters the water source heat pump air conditioning system through the third water pump and the third digital display flow control valve, then enters the recharging water storage tank through the fourth water pump and the fourth digital display flow control valve, and then enters the equipment pickling system through the fifth water pump and the fifth digital display flow control valve to complete a pickling cycle to clean the water source heat pump air conditioning system and the recharging water storage tank.
When fracturing work is needed, the aquifer fracturing permeability-increasing standby system is utilized to respectively carry out fracturing operation on the aquifers of the cluster shallow recharge first well, the cluster shallow recharge second well, the cluster deep recharge first well and the cluster deep recharge second well, so that the recharging amount of the cluster shallow recharge first well, the cluster shallow recharge second well, the cluster deep recharge first well and the cluster deep recharge second well is increased, and the method specifically comprises the following steps: fracturing liquid in the aquifer fracturing permeability-increasing standby system respectively enters a cluster shallow recharging first well through a tenth water pump and a tenth digital control valve through a first fracturing pipeline, enters a cluster shallow recharging second well through an eleventh water pump and an eleventh digital control valve through a second fracturing pipeline, enters a cluster deep recharging first well through a twelfth water pump and a twelfth digital control valve through a third fracturing pipeline, and enters a cluster deep recharging second well through a thirteenth water pump and a thirteenth digital control valve through a fourth fracturing pipeline, so that fracturing operation on aquifers of the cluster shallow recharging first well, the cluster shallow recharging second well, the cluster deep recharging first well and the cluster deep recharging second well is realized.
Compared with the prior art, the utility model has substantive characteristics and progress, in particular to the utility model, the cluster shallow layer extraction well and the cluster deep layer extraction well are arranged, and a cluster shallow layer recharge first well, a cluster shallow layer recharge second well, a cluster deep layer recharge first well and a cluster deep layer recharge second well are respectively and correspondingly arranged, thus the whole occupied area of the well heads of the extraction well and the recharge well is small, and the maintenance and the management are easy; moreover, the cluster well can be extended farther, so that the problem of thermal short circuit is effectively prevented; the deep well and the shallow well are combined for use, so that the temperature of underground water with different temperatures is more reasonably utilized, the heat exchange efficiency is higher, the temperature recovery period of the underground water is reserved, and the problems of heat accumulation and cold cave effect caused by long-term operation are avoided; the backup system for fracturing and permeability increasing of the aquifer is used for increasing the permeability of the recharge stratum and solving the problem of difficult recharge; water scales in the water source heat pump air-conditioning system and the recharge water storage tank are periodically cleaned by using an acid solution, so that the heat exchange efficiency is prevented from being influenced by a large amount of water scales generated in the operation of the water source heat pump air-conditioning system; the vacuum pipeline has good heat insulation performance and better heat insulation effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the vacuum pipe.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the underground hot water recycling system comprises a cluster shallow layer extraction well 1, a cluster deep layer extraction well 2, an equipment pickling system 3, a water source heat pump air-conditioning system 4, a recharge water storage tank 5, a cluster shallow layer recharge first well 6, a cluster shallow layer recharge second well 7, a cluster deep layer recharge first well 8, a cluster deep layer recharge second well 9 and a aquifer fracturing permeability-increasing standby system 10, wherein the cluster shallow layer extraction well 1 is connected with the water source heat pump air-conditioning system 4 through a first water pumping pipeline 11, a first water pump 12 and a first digital display flow control valve 13 are arranged on the first water pumping pipeline 11, the cluster deep layer extraction well 2 is connected with the water source heat pump air-conditioning system 4 through a second water pumping pipeline 14, a second water pump 15 and a second digital display valve 16 are arranged on the second water pumping pipeline 14, the equipment pickling system 3 is connected with the water source heat pump air-conditioning system 4 through a third water pumping pipeline 17, a third water pump 18 and a third digital display flow control valve 19 are arranged on a third water pumping pipeline 17, a water source heat pump air-conditioning system 4 is connected with a recharge water storage tank 5 through a first water drainage pipeline 20, a fourth water pump 21 and a fourth digital display flow control valve 22 are arranged on the first water drainage pipeline 20, the recharge water storage tank 5 is connected with an equipment pickling system 3 through a second water drainage pipeline 23, a fifth water pump 24 and a fifth digital display flow control valve 25 are arranged on the second water drainage pipeline 23, the recharge water storage tank 5 is connected with a cluster shallow recharge first well 6 through a first recharge pipeline 26, a sixth water pump 27 and a sixth digital display flow control valve 28 are arranged on the first recharge pipeline 26, the recharge water storage tank 5 is connected with a cluster shallow recharge second well 7 through a second recharge pipeline 29, a seventh water pump 30 and a seventh digital display flow control valve 31 are arranged on the second recharge pipeline 29, the recharge water storage tank 5 is connected with a cluster deep recharge first well 8 through a third recharge pipeline 32, an eighth water pump 33 and an eighth digital display flow control valve 34 are arranged on a third recharging pipeline 32, a recharging water storage tank 5 is connected with a cluster deep recharging second well 9 through a fourth recharging pipeline 35, a ninth water pump 36 and a ninth digital display flow control valve 37 are arranged on the fourth recharging pipeline 35, a aquifer fracturing permeability-increasing standby system 10 is connected with a cluster shallow recharging first well 6 through a first fracturing pipeline 38, a tenth water pump 39 and a tenth digital display flow control valve 40 are arranged on the first fracturing pipeline 38, the aquifer fracturing permeability-increasing standby system 10 is connected with a cluster shallow recharging second well 7 through a second fracturing pipeline 41, an eleventh water pump 42 and an eleventh digital display flow control valve 43 are arranged on the second fracturing pipeline 41, the aquifer fracturing permeability-increasing standby system 10 is connected with a cluster deep recharging first well 8 through a third fracturing pipeline 44, a twelfth digital display flow control valve 45 and a twelfth digital display flow control valve 46 are arranged on the third fracturing pipeline 44, the aquifer fracturing permeability-increasing standby system 10 is connected with the cluster deep-layer recharge second well 9 through a fourth fracturing pipeline 47, a thirteenth water pump 48 and a thirteenth digital display flow control valve 49 are arranged on the fourth fracturing pipeline 47, and the water source heat pump air-conditioning system 4 is respectively connected with a water inlet pipeline 50 for introducing the resident water and a water outlet pipeline 51 for discharging the resident water;
the storage tank of the equipment pickling system 3 is stored with the prepared acid solution, and the storage tank of the equipment pickling system 3 is provided with a vent valve 52, a pressure gauge 53 and a pH meter 54.
The cluster shallow extraction well 1 is a vertical well vertically driven into a relatively shallow aquifer 57, the cluster shallow recharge first well 6 and the cluster shallow recharge second well 7 are horizontal wells driven into the relatively shallow aquifer 57, mineshafts of the cluster shallow recharge first well 6 and the cluster shallow recharge second well 7 horizontally extend in the relatively shallow aquifer 57 and are far away from the cluster shallow extraction well 1, the cluster deep extraction well 2 is a vertical well vertically driven into the relatively deep aquifer 58, the cluster deep recharge first well 8 and the cluster deep recharge second well 9 are horizontal wells driven into the relatively deep aquifer 58, and the mineshafts of the cluster deep recharge first well 8 and the cluster deep recharge second well 9 horizontally extend in the relatively deep aquifer 58 and are far away from the mineshafts of the cluster deep extraction well 2;
casings are inserted into the cluster shallow extraction well 1, the cluster shallow recharge first well 6, the cluster shallow recharge second well 7, the cluster deep extraction well 2, the cluster deep recharge first well 8 and the cluster deep recharge second well 9, annular gaps between the inner walls of the cluster shallow extraction well 1, the cluster shallow recharge first well 6, the cluster shallow recharge second well 7, the cluster deep extraction well 2, the cluster deep recharge first well 8 and the cluster deep recharge second well 9 and the corresponding casings are filled with cement, and the casings are made of carbon steel.
The first water pumping pipeline 11, the second water pumping pipeline 14, the third water pumping pipeline 17, the first water draining pipeline 20, the second water draining pipeline 23, the first recharging pipeline 26, the second recharging pipeline 29, the third recharging pipeline 32, the fourth recharging pipeline 35, the water inlet pipeline 50 and the water outlet pipeline 51 are vacuum pipelines with cross sections in an annular sandwich structure, the annular sandwich space is vacuum, the vacuum pipelines are made of PPR (polypropylene random copolymer), the vacuum pipelines are wrapped with a heat insulation layer, and a vacuum meter 55 and a vacuum pumping valve 56 are arranged on each vacuum pipeline. The vacuum pipeline is used for preventing heat loss of water in the transportation process.
By adopting the technical scheme, the working method of the underground hot water recycling system comprises the following working modes:
the first mode of operation: when the weather is hot, underground water with lower temperature is collected from the relatively shallow aquifer 57 by using the cluster shallow extraction well 1, the underground water with lower temperature and residential water exchange heat in the water source heat pump air conditioning system 4 to realize the refrigeration effect, and the underground water after heat exchange enters the recharge water storage tank 5 and is recharged to the relatively shallow aquifer 57 through the cluster shallow recharge first well 6 and the cluster shallow recharge second well 7 respectively;
the second working mode is as follows: when the weather is cold, the cluster deep extraction well 2 is used for collecting underground water with higher temperature from the relatively deep aquifer 58, the underground water with higher temperature and the residential water exchange heat in the water source heat pump air conditioning system 4 to realize the heating effect, and the underground water after heat exchange enters the recharge water storage tank 5 and is recharged to the relatively deep aquifer 58 through the cluster deep recharge first well 8 and the cluster deep recharge second well 9 respectively.
The first operating mode is specifically as follows: starting a first water pump 12, a fourth water pump 21, a sixth water pump 27 and a seventh water pump 30, opening a first digital display flow control valve 13, a fourth digital display flow control valve 22, a sixth digital display flow control valve 28 and a seventh digital display flow control valve 31, extracting low-temperature underground water from the cluster shallow extraction well 1 through a first water pumping pipeline 11, enabling the low-temperature underground water to enter a water source heat pump air conditioning system 4, enabling resident water to enter the water source heat pump air conditioning system 4 through a water inlet pipeline 50 to exchange heat with the underground water, enabling the temperature of the resident water to be reduced and enabling the resident water to flow out of a water outlet pipeline 51, and achieving a refrigeration effect; the groundwater after heat exchange enters the recharge water storage tank 5 through the first drainage pipeline 20 via the fourth water pump 21 and the fourth digital display flow control valve 22, the groundwater in the recharge water storage tank 5 enters the cluster shallow recharge first well 6 through the first recharge pipeline 26 via the sixth water pump 27 and the sixth digital display flow control valve 28, the groundwater in the recharge water storage tank 5 also enters the cluster shallow recharge second well 7 through the seventh water pump 30 and the seventh digital display flow control valve 31 and the second recharge pipeline 29, and therefore the groundwater in the recharge water storage tank 5 can be recharged to the relatively shallow aquifer 57.
The second working mode is specifically as follows: starting a second water pump 15, a fourth water pump 21, an eighth water pump 33 and a ninth water pump 36, opening a second digital display flow control valve 16, a fourth digital display flow control valve 22, an eighth digital display flow control valve 34 and a ninth digital display flow control valve 37, extracting high-temperature underground water from the cluster type deep extraction well 2 through a second water pumping pipeline 14, enabling the high-temperature underground water to enter a water source heat pump air conditioning system 4, enabling resident water to enter the water source heat pump air conditioning system 4 through a water inlet pipeline 50 to exchange heat with the underground water, enabling the temperature of the resident water to rise and flow out of a water outlet pipeline 51, and achieving a heating effect; the groundwater after heat exchange enters the recharge water storage tank 5 through the first drainage pipeline 20 via the fourth water pump 21 and the fourth digital display flow control valve 22, the groundwater in the recharge water storage tank 5 enters the cluster deep recharge first well 8 through the eighth water pump 33 and the eighth digital display flow control valve 34 and the third recharge pipeline 32, the groundwater in the recharge water storage tank 5 also enters the cluster deep recharge second well 9 through the ninth water pump 36 and the ninth digital display flow control valve 37 and the fourth recharge pipeline 35, and therefore the groundwater in the recharge water storage tank 5 can be recharged to the relatively deep aquifer 58.
During the working period of the cluster shallow extraction well 1, the cluster shallow recharge first well 6 and the cluster shallow recharge second well 7, the cluster deep extraction well 2, the cluster deep recharge first well 8, the cluster deep recharge second well 9 and the corresponding deep aquifer 58 enter an underground water compensation and temperature recovery period; during the working period of the cluster deep extraction well 2, the cluster deep recharge first well 8 and the cluster deep recharge second well 9, the cluster shallow extraction well 1, the cluster shallow recharge first well 6, the cluster shallow recharge second well 7 and the relative shallow aquifer 57 enter the underground water compensation and temperature recovery period.
In the shutdown time period, the acidic solution in the equipment pickling system 3 enters the water source heat pump air conditioning system 4 through the third water pump 18 and the third digital display flow control valve 19, enters the recharging water storage tank 5 through the fourth water pump 21 and the fourth digital display flow control valve 22, enters the equipment pickling system 3 through the fifth water pump 24 and the fifth digital display flow control valve 25, completes a pickling cycle, and cleans the water source heat pump air conditioning system 4 and the recharging water storage tank 5.
When fracturing work is needed, the aquifer fracturing permeability-increasing standby system 10 is used for respectively carrying out fracturing operation on aquifers of the cluster shallow recharge first well 6, the cluster shallow recharge second well 7, the cluster deep recharge first well 8 and the cluster deep recharge second well 9, so that the recharging amount of the cluster shallow recharge first well 6, the cluster shallow recharge second well 7, the cluster deep recharge first well 8 and the cluster deep recharge second well 9 is increased, and the method specifically comprises the following steps: fracturing liquid in the aquifer fracturing permeability-increasing standby system 10 enters the cluster shallow recharging first well 6 through the first fracturing pipeline 38 via the tenth water pump 39 and the tenth digital flow control valve 40, enters the cluster shallow recharging second well 7 through the second fracturing pipeline 41 via the eleventh water pump 42 and the eleventh digital flow control valve 43, enters the cluster deep recharging first well 8 through the third fracturing pipeline 44 via the twelfth water pump 45 and the twelfth digital flow control valve 46, and enters the cluster deep recharging second well 9 through the fourth fracturing pipeline 47 via the thirteenth water pump 48 and the thirteenth digital flow control valve 49, so that fracturing operation on the aquifers of the cluster shallow recharging first well 6, the cluster shallow recharging second well 7, the cluster deep recharging first well 8 and the cluster deep recharging second well 9 is realized.
The utility model discloses set up cluster shallow layer extraction well 1 and cluster deep layer extraction well 2, and correspond respectively and set up cluster shallow layer recharge first well 6, cluster shallow layer recharge second well 7, cluster deep layer recharge first well 8 and cluster deep layer recharge second well 9, so, make the whole area occupied of well head of extraction well and recharge well small, easy to maintain and manage; moreover, the cluster well can be extended farther, so that the problem of thermal short circuit is effectively prevented; the deep well and the shallow well are combined for use, so that the temperature of underground water with different temperatures is more reasonably utilized, the heat exchange efficiency is higher, the temperature recovery period of the underground water is reserved, and the problems of heat accumulation and cold cave effect caused by long-term operation are avoided; the backup fracturing and permeability increasing system 10 for the aquifer is used for increasing the permeability of the recharge stratum and solving the problem of difficult recharge; water scales in the water source heat pump air-conditioning system 4 and the recharge water storage tank 5 are periodically cleaned by using an acid solution, so that a large amount of water scales generated in the operation of the water source heat pump air-conditioning system 4 are prevented from influencing the heat exchange efficiency; the vacuum pipeline has good heat insulation performance and better heat insulation effect.
The above embodiments are only used for illustrating but not limiting the technical solution of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
Claims (3)
1. Underground hot water cyclic utilization system, its characterized in that: the system comprises a cluster shallow extraction well, a cluster deep extraction well, an equipment pickling system, a water source heat pump air conditioning system, a recharge water storage tank, a cluster shallow recharge first well, a cluster shallow recharge second well, a cluster deep recharge first well, a cluster deep recharge second well and a aquifer fracturing permeability-increasing standby system, wherein the cluster shallow extraction well is connected with the water source heat pump air conditioning system through a first water pumping pipeline, a first water pump and a first digital display flow control valve are arranged on the first water pumping pipeline, the cluster deep extraction well is connected with the water source heat pump air conditioning system through a second water pumping pipeline, a second water pump and a second digital display flow control valve are arranged on the second water pumping pipeline, the equipment pickling system is connected with the water source heat pump air conditioning system through a third water pumping pipeline, a third water pump and a third digital display flow control valve are arranged on the third water pumping pipeline, the water source heat pump air conditioning system is connected with the recharge water storage tank through a first water drainage pipeline, a fourth water pump and a fourth digital display flow control valve are arranged on the first drainage pipeline, the recharge water storage tank is connected with the equipment pickling system through a second drainage pipeline, a fifth water pump and a fifth digital display flow control valve are arranged on the second drainage pipeline, the recharge water storage tank is connected with the cluster shallow recharge first well through a first recharge pipeline, a sixth water pump and a sixth digital display flow control valve are arranged on the first recharge pipeline, the recharge water storage tank is connected with the cluster shallow recharge second well through a second recharge pipeline, a seventh water pump and a seventh digital display flow control valve are arranged on the second recharge pipeline, the recharge water storage tank is connected with the cluster deep recharge first well through a third recharge pipeline, an eighth water pump and an eighth digital display flow control valve are arranged on the third recharge pipeline, the recharge water storage tank is connected with the cluster deep recharge second well through a fourth recharge pipeline, and a ninth water pump and a ninth digital display flow control valve are arranged on the fourth recharge pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster shallow recharge first well through a first fracturing pipeline, a tenth water pump and a tenth digital control valve are arranged on the first fracturing pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster shallow recharge second well through a second fracturing pipeline, an eleventh water pump and an eleventh digital control valve are arranged on the second fracturing pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster deep recharge first well through a third fracturing pipeline, a twelfth water pump and a twelfth digital control valve are arranged on the third fracturing pipeline, the aquifer fracturing permeability-increasing standby system is connected with the cluster deep recharge second well through a fourth fracturing pipeline, a thirteenth water pump and a thirteenth digital control valve are arranged on the fourth fracturing pipeline, and the water source heat pump air-conditioning system is respectively connected with a water inlet pipeline for introducing the water of residents and a water outlet pipeline for discharging the water of residents;
the storage tank of the equipment pickling system is stored with a prepared acid solution, and a vent valve, a pressure gauge and a PH meter are arranged on the storage tank of the equipment pickling system.
2. The underground hot water recycling system according to claim 1, wherein: the cluster shallow layer extraction well is a vertical well vertically driven into a relatively shallow layer water-containing layer, the cluster shallow layer recharge first well and the cluster shallow layer recharge second well are horizontal wells driven into the relatively shallow layer water-containing layer, mineshafts of the cluster shallow layer recharge first well and the cluster shallow layer recharge second well horizontally extend in the relatively shallow layer water-containing layer and are far away from the mineshafts of the cluster shallow layer extraction well, the cluster deep layer extraction well is a vertical well vertically driven into the relatively deep layer water-containing layer, the cluster deep layer recharge first well and the cluster deep layer recharge second well are horizontal wells driven into the relatively deep layer water-containing layer, and the mineshafts of the cluster deep layer recharge first well and the cluster deep layer recharge second well horizontally extend in the relatively deep layer water-containing layer and are far away from the mineshafts of the cluster deep layer extraction well;
casings are inserted into the cluster shallow extraction well, the cluster shallow recharge first well, the cluster shallow recharge second well, the cluster deep extraction well, the cluster deep recharge first well and the cluster deep recharge second well, cement is poured into annular gaps between the inner walls of the cluster shallow extraction well, the cluster shallow recharge first well, the cluster shallow recharge second well, the cluster deep extraction well, the cluster deep recharge first well and the cluster deep recharge second well and the corresponding casings, and the casings are made of carbon steel.
3. An underground hot water recycling system according to claim 1 or 2, characterized in that: first pipeline, the second pipeline that draws water, the third pipeline that draws water, first drainage pipe, the second drainage pipe, first recharge pipeline, the second pipeline that recharges, the third pipeline that recharges, the fourth pipeline that recharges, inlet channel and outlet conduit are transversal vacuum pipe who personally submits cyclic annular sandwich structure, and cyclic annular sandwich space is the vacuum, and the material of vacuum pipe adopts PPR, and the outside parcel of vacuum pipe has the one deck insulating layer, is equipped with vacuum meter and evacuation valve on the vacuum pipe.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110542166A (en) * | 2019-10-16 | 2019-12-06 | 河南理工大学 | Underground hot water recycling system and working method thereof |
| CN114876414A (en) * | 2022-04-20 | 2022-08-09 | 中国地质科学院水文地质环境地质研究所 | Efficient extraction equipment for deep geothermal exploitation well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542166A (en) * | 2019-10-16 | 2019-12-06 | 河南理工大学 | Underground hot water recycling system and working method thereof |
| CN114876414A (en) * | 2022-04-20 | 2022-08-09 | 中国地质科学院水文地质环境地质研究所 | Efficient extraction equipment for deep geothermal exploitation well |
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