CN114165944B - Clean cold and heat source system based on abandoned mine - Google Patents

Clean cold and heat source system based on abandoned mine Download PDF

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Publication number
CN114165944B
CN114165944B CN202111516014.5A CN202111516014A CN114165944B CN 114165944 B CN114165944 B CN 114165944B CN 202111516014 A CN202111516014 A CN 202111516014A CN 114165944 B CN114165944 B CN 114165944B
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China
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water
pipe
heat
valve
cold
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CN114165944A (en
Inventor
李海波
吴建华
高鹏
文兰
郝君
李婷
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Fourth Exploration Team Of Shandong Coalfield Geology Bureau
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Fourth Exploration Team Of Shandong Coalfield Geology Bureau
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00—Geothermal collectors
    • F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • F28C2001/006—Systems comprising cooling towers, e.g. for recooling a cooling medium
    • 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Hydrology & Water Resources (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Abstract

The application relates to a clean cold and heat source system based on a abandoned mine, and belongs to the technical field of mine utilization. The application comprises a water source system and an energy station machine room; the water source system is used for providing and storing cold source water and heat source water; the water source system comprises a mine shaft and a newly-built water well; the mine shaft is used for pumping water and draining water from the surface of the underground water level; the newly built water well is used for pumping water or draining water from the deep well lane; the energy station machine room is communicated with the water source system through a pipeline and is used for extracting cold source water or heat source water and inputting cold water or hot water to an energy utilization end; the water source system and the energy station machine room are used for realizing circulation of cold source water and hot source water. The application designs a clean cold and heat source system with high efficiency and low cost by utilizing the characteristics of the abandoned mine and combining the treatment work of the abandoned mine, and reasonably applies and treats the abandoned mine.

Description

Clean cold and heat source system based on abandoned mine
Technical Field
The application relates to a clean cold and heat source system based on a abandoned mine, and belongs to the technical field.
Background
The coal, iron ore and the like in China are large in total utilization amount, underground mineral resources are continuously mined, and abandoned mines are more and more after reserves are mined.
The total mileage of abandoned mine shaft is long, the average depth is deep, the heat quantity of the mine shaft is enough, and meanwhile, after the mine shaft is closed and water drainage is stopped, the mine shaft water can rebound quickly and submerge, so that abundant mine shaft water resources are formed. Along with the expansion of urban construction areas and the development of construction of new rural areas, necessary conditions are created for realizing new resource utilization forms, and the application and treatment of abandoned mines are required to be further excavated and utilized.
Disclosure of Invention
The waste mine has the characteristics of long mine tunnel, large underground space and deep burying depth, so that the mine tunnel rock soil and the well water have the advantages of rich geothermal resources and energy storage.
The application provides a clean cold and heat source system based on a abandoned mine, which adopts the following technical scheme:
a clean cold and heat source system based on abandoned mines, comprising:
the water source system is used for providing cold source water and heat source water and can exchange cold and heat with underground rock soil and well water; and
the energy station machine room is communicated with the water source system through a pipeline and is used for extracting the cold source water or the heat source water, preparing cold water or hot water and conveying the cold water or the hot water to an energy utilization end;
the water source system and the energy station machine room are used for realizing circulation of the cold source water and the heat source water;
the water source system includes:
a mine shaft for effecting water withdrawal and drainage from the surface of the ground water level; and
and the newly-built water well is used for pumping water or draining water from the deep roadway.
By adopting the technical scheme, the water source system is communicated with the energy station machine room, heat source water and cold source water are used as heat and cold sources of the energy station machine room, the favorable conditions of the abandoned mine are fully utilized, well water is used as a medium to extract and store energy to underground rock and soil of the abandoned mine, and cold water or hot water is provided for an energy utilization end; the method has higher efficiency and lower construction cost, and simultaneously realizes the aim of changing waste into valuables by combining the treatment work of the abandoned mine.
Preferably, the method further comprises:
and the auxiliary heat dissipation system is used for keeping the temperature of the cold source water within a set range.
By adopting the technical scheme, when the temperature of the cold source water is too high, the auxiliary heat dissipation system starts to work according to the heat dissipation requirement, so that the temperature of the cold source water entering the energy station machine room is kept within a set range.
Preferably, a first water suction pipe and a first water discharge pipe are arranged in the mine shaft; one end of the first water suction pipe is provided with a first submersible pump, and the first submersible pump is positioned below the water level of the mine shaft; the first water suction pipe is provided with a first valve; the first drain pipe is provided with a second valve; one end of the first drain pipe is communicated with the energy station machine room;
the distance between the newly-built water well and the mine shaft is a set distance; a second water pumping pipe and a second water draining pipe are arranged in the newly-built water well, a second submersible pump is arranged at one end of the second water pumping pipe, and the second submersible pump is positioned below the water level of the newly-built water well; the second water suction pipe is provided with a third valve; one end of the second drain pipe is communicated with the energy station machine room; the second drain pipe is provided with a fourth valve;
the water source system further comprises:
the sedimentation tank is used for precipitating and filtering impurities in the cold source water and the heat source water and replacing the cold source water and the heat source water; the sedimentation tank is provided with a water pumping pipe; the water suction pipe is provided with a fifth valve; the water pumping pipe is communicated with the other end of the first water pumping pipe; the water pumping pipe is communicated with the other end of the second water pumping pipe.
By adopting the technical scheme, when hot water is prepared in the energy station machine room, a newly built water well is used as a pumping well, a mine shaft is used as a drainage well, a second submersible pump works, a second valve, a third valve and a fifth valve are opened, heat source water with higher temperature in a deep well lane is pumped through the newly built water well, and is discharged into the vicinity of the surface of an underground water level through the mine shaft after being utilized, the heat source water is gradually heated by rock soil and purified water from shallow and deep and is recycled to a suction inlet of the newly built water well, and the aim of highest heat source water temperature is fulfilled; when cold water is prepared by the energy station, the first submersible pump works, the first valve, the fourth valve and the fifth valve are opened, the newly built water well is used as a drainage well, the mine shaft is used as a pumping well, cold source water with lower temperature is pumped from the vicinity of the surface of the underground water level through the mine shaft, the cold source water is discharged into a deep well lane from the newly built water well after being utilized, and the cold source water is recycled to a suction inlet at the vicinity of the surface of the underground water level after gradually cooling from deep to shallow through rock soil and well water, so that the aim of lowest temperature of the cold source water is fulfilled; in order to increase the heat exchange quantity of well water and rock soil, the distance between a newly-built well and a mine shaft needs to be larger than a set distance, and the set distance is comprehensively determined according to the installed capacity of an energy station machine room, the economic cost of a pipeline and the installation condition of a site; by arranging the sedimentation tank, the stability of the application is ensured.
Preferably, the energy station machine room includes:
the heat pump unit is provided with a third water suction pipe and a third water discharge pipe; the third water suction pipe is provided with an active water circulating pump; the third drain pipe is provided with a sixth valve; the heat pump unit is communicated with the sedimentation tank through the third water suction pipe; the heat pump unit is communicated with the mine shaft through the third drain pipe and the first drain pipe; the heat pump unit is communicated with the newly-built water well through the third water drain pipe and the second water drain pipe;
the heat pump unit is also provided with a fourth water suction pipe and a fourth water discharge pipe; the fourth water pumping pipe is provided with a useful energy end circulating pump; the heat pump unit is communicated with one end of the fourth water suction pipe, and the other end of the fourth water suction pipe is connected with the energy utilization end; the energy utilization end is communicated with one end of the fourth drain pipe, and the other end of the fourth drain pipe is communicated with the heat pump unit; and
the control mechanism is in communication connection with the first submersible pump, the second submersible pump, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, the source water circulating pump, the energy-consumption-end circulating pump and the heat pump unit.
By adopting the technical scheme, cold water or hot water can be prepared, and at the moment, the sixth valve is opened; when hot water is prepared, the heat in the heat source water is extracted and released into the hot water at the energy utilization end; when cold water is prepared, the heat in the cold water is extracted and released into cold source water.
Preferably, the heat pump unit is divided into a primary heat pump unit and a secondary heat pump unit; the cascade utilization is realized between the primary heat pump unit and the secondary heat pump unit.
When the temperature of the heat source water is higher, the available temperature difference of the heat source water is large, and the cascade utilization of the heat source water is realized by adopting the technical scheme, so that the working efficiency of the application is improved.
Preferably, the auxiliary heat dissipation system is one or more of a shallow water source well, a cooling tower or a heat pump water heater.
By adopting the technical scheme, a proper auxiliary heat dissipation mode can be selected according to actual conditions, and the temperature of cold source water entering the heat pump unit is ensured to be normal.
Preferably, a fifth water pumping pipe is arranged in the shallow water source well; one end of the fifth water suction pipe is provided with a third submersible pump, and the other end of the fifth water suction pipe is communicated with the sedimentation tank; the third submersible pump is in communication connection with the control mechanism.
By utilizing the characteristic of low temperature of shallow rock and soil, the control mechanism controls the working state of the third submersible pump by adopting the technical scheme, and the third submersible pump bears the power of well water flowing to the sedimentation tank; the shallow water source well is used as a pumping well, can obtain well water with lower temperature, and pumps part of well water with lower temperature into the sedimentation tank so as to reduce the temperature of cold source water in the sedimentation tank.
Preferably, the cooling tower is provided with a fifth drain pipe and a sixth drain pipe; the fifth drain pipe is provided with a seventh valve, and the seventh valve is in communication connection with the control mechanism; the cooling tower is communicated with the heat pump unit through the fifth drain pipe and the third drain pipe; the sixth drain pipe is in communication with the second drain pipe.
By adopting the technical scheme, the control mechanism controls the opening and closing of the seventh valve; when cold water is prepared, when the water temperature discharged into a deep roadway is higher than a set value, the seventh valve is opened, and the sixth valve is closed; the cooling tower reduces the temperature of cold source water and reduces the heat discharged into a deep roadway by radiating heat to the outdoor air.
Preferably, the heat pump water heater is provided with a sixth water suction pipe; the sixth water pumping pipe is provided with a circulating pump, and the circulating pump is in communication connection with the control mechanism;
the heat pump water heater is communicated with the sedimentation tank through the sixth water suction pipe.
By adopting the technical scheme, the control mechanism controls the starting and the suspension of the circulating pump; the heat pump water heater is used for preparing high-temperature hot water by absorbing heat of cold source water and reducing the temperature of the cold source water in the sedimentation tank.
Preferably, the control mechanism is a controller.
In summary, the application has the following beneficial technical effects:
1. the application reasonably applies and treats the abandoned mine, fully utilizes the favorable conditions of the abandoned mine by combining the heat pump technology, takes the well water as a medium to extract and store energy to underground rock soil and well water of the abandoned mine, is used for providing cold water or hot water to an energy utilization end, and can improve a clean cold and heat source system with high efficiency and low construction cost;
2. the application can reduce the temperature of cold source water, reduce the heat discharged into the ground, improve the energy efficiency of the application, save energy and protect environment by the auxiliary heat dissipation system;
3. when the temperature of the heat source water is higher and the available temperature difference of the heat source water is large, the application can realize the cascade utilization of the heat pump unit and fully utilize the heat in the heat source water.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic structural diagram of embodiment 2 of the present application;
FIG. 3 is a schematic structural view of embodiment 3 of the present application;
fig. 4 is a schematic diagram of a heat pump unit cascade utilization structure in an embodiment of the application.
Reference numerals illustrate: 1. a mine shaft; 2. a first submersible pump; 3. a first water suction pipe; 4. a first drain pipe; 5. a second valve; 6. a first valve; 7. newly-built water wells; 8. a second submersible pump; 9. a second water suction pipe; 10. a second drain pipe; 11. a fourth valve; 12. a third valve; 13. a sedimentation tank; 14. a water pumping pipe; 15. a fifth valve; 16. a heat pump unit; 17. a third water suction pipe; 18. a third drain pipe; 19. a sixth valve; 20. a source water circulating pump; 21. an energy utilization end; 22. a fourth water suction pipe; 23. an energy end circulating pump is used; 24. a fourth drain pipe; 25. shallow water source well; 26. a third submersible pump; 27. a fifth water suction pipe; 28. a heat pump water heater; 29. a sixth water suction pipe; 30. a circulation pump; 31. a cooling tower; 32. a fifth drain pipe; 33. a seventh valve; 34. a sixth drain pipe; 35. a first-stage heat pump unit; 36. a water pumping pipe of the heat pump unit; 37. a first source water circulating pump; 38. a seventh water suction pipe; 39. a ninth valve; 40. an eighth valve; 41. a ninth water suction pipe; 42. a first energy-side circulation pump; 43. a primary energy utilization end; 44. a ninth drain pipe; 45. an eighth water pumping pipe; 46. a tenth valve; 47. a tenth water pumping pipe; 48. an eleventh valve; 49. a tenth drain pipe; 50. the second energy-consumption end circulating pump; 51. an eleventh water suction pipe; 52. a second-stage energy utilization end; 53. an eleventh drain pipe; 54. a two-stage heat pump unit.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses a clean cold and heat source system based on a abandoned mine.
Example 1
Abandoned mine conditions:
the waste mine has a three-hole waste mine, wherein: the waste mine 1 has a depth of 250m, the waste mine 2 has a depth of 380m, and the waste mine 3 has a depth of 620m. Each abandoned mine is arranged in an area with the length of 3.6km from the south to the north, the depth of the abandoned mine is gradually increased, and the average diameter of the abandoned mine is 5.2 meters. Every two abandoned mines are connected by two main roadways from the bottommost of the mines, the distance between the two main roadways is 20m-30m, branch roadways are communicated every 100m-200m, supporting structures are arranged around the main roadways, and the supporting structures are partially U-shaped steel groove structures and partially anchor bolt supports. The top surface of the roadway is arched, the bottom plate and the side wall are rectangular, the width is 4m, and the height is 3m-4m. The rest of the roadway and the mining face collapse due to the lack of support. The water temperature near the water surface of the abandoned mine is 18 ℃, the water temperature of the underground 255m roadway is 21 ℃, and the water temperature of the underground 615m roadway is 30 ℃.
As shown in fig. 1, a clean cold and heat source system based on abandoned mines comprises a water source system and an energy station machine room; the water source system comprises a mine shaft 1, a newly built water well 7 and a sedimentation tank 13; the energy station machine room comprises a heat pump unit 16 and a control mechanism;
the mine shaft 1 is a waste mine No. 1 with the depth of 250 meters; setting the depth of the newly built water well 7 to be 250 meters; the heat source water with the temperature of 21 ℃ at the highest and the cold source water with the temperature of 18 ℃ at the lowest can be obtained;
a first water suction pipe 3 and a first water discharge pipe 4 are vertically arranged in the mine shaft 1; a first submersible pump 2 is arranged at one end of the first water suction pipe 3, and the first submersible pump 2 is positioned below the water level of the mine shaft 1; the first water suction pipe 3 is provided with a first valve 6; the first drain pipe 4 is provided with a second valve 5;
the distance between the newly-built water well 7 and the mine shaft 1 is set, and the set distance is comprehensively determined according to the installed capacity of an energy station machine room, the economic cost of a pipeline and the installation condition of the site; in the embodiment, the distance between the newly-built water well 7 and the mine shaft 1 is 200 meters; the depth of the newly-built vertical shaft is 250m, a second water pumping pipe 9 and a second water discharging pipe 10 are arranged in the newly-built water well 7, a second submersible pump 8 is arranged at one end of the second water pumping pipe 9, the second submersible pump 8 is positioned below the water level of the newly-built water well 7, and the setting depth of the second submersible pump 8 is 110 m; the second water suction pipe 9 is provided with a third valve 12; the second drain pipe 10 is provided with a fourth valve 11;
the sedimentation tank 13 is used for precipitating and filtering impurities in the cold source water and the heat source water and storing the cold source water and the heat source water; the volume of the sedimentation tank 13 is 20 m; the sedimentation tank 13 is provided with a water pumping pipe 14 and a water level measuring instrument; the water suction pipe 14 is provided with a fifth valve 15; the water level measuring instrument is in communication connection with the control mechanism and is used for collecting water level data in the sedimentation tank 13 and transmitting the water level data to the control mechanism;
the heat pump unit 16 is provided with a third water suction pipe 17, a third water discharge pipe 18, a fourth water suction pipe 22 and a fourth water discharge pipe 24; the third water suction pipe 17 is provided with an active water circulating water pump 20 and a first temperature sensor, the first temperature sensor is in communication connection with the control mechanism, and the first temperature sensor is used for collecting temperature data of cold source water or heat source water flowing to the heat pump unit 16 through the third water suction pipe 17 and transmitting the temperature data to the control mechanism; the third drain pipe 18 is provided with a sixth valve 19 and a second temperature sensor, the second temperature sensor is in communication connection with the control mechanism, and the second temperature sensor is used for collecting temperature data of cold source water or heat source water flowing out of the heat pump unit 16 through the third drain pipe 18 and transmitting the temperature data to the control mechanism; the fourth water suction pipe 22 is provided with an energy-end circulating pump 23;
the other end of the second water suction pipe 9 of the newly-built water well 7 is communicated with a water suction pipe 14 of a sedimentation tank 13, the sedimentation tank 13 is communicated with a third water suction pipe 17 of a heat pump unit 16, and a third water discharge pipe 18 of the heat pump unit 16 is communicated with the first water discharge pipe 4 of the mine shaft 1; the newly built water well 7, the second submersible pump 8, the second water pumping pipe 9, the water pumping pipe 14, the sedimentation tank 13, the third water pumping pipe 17, the source water circulating water pump 20, the heat pump unit 16, the third water discharging pipe 18, the first water discharging pipe 4 and the mine shaft 1 form a heat source water circulating loop;
the other end of the first water suction pipe 3 of the mine shaft 1 is communicated with the water suction pipe 14 of the sedimentation tank 13, and the third water discharge pipe 18 of the heat pump unit 16 is communicated with the second water discharge pipe 10 of the newly-built water well 7; the mine shaft 1, the first submersible pump 2, the first water pumping pipe 3, the water pumping pipe 14, the sedimentation tank 13, the third water pumping pipe 17, the heat pump unit 16, the third water discharging pipe 18, the second water discharging pipe 10 and the newly-built water well 7 form a cold source water circulation loop;
the heat pump unit 16 is communicated with the energy utilization end 21 through a fourth water suction pipe 22 and a fourth water discharge pipe 24;
the control mechanism is in communication connection with the first submersible pump 2, the second submersible pump 8, the first valve 6, the second valve 5, the third valve 12, the fourth valve 11, the fifth valve 15, the sixth valve 19, the source water circulating pump 20, the energy-consumption-end circulating pump 23 and the heat pump unit 16; the source water circulating pump 20 works in a variable frequency mode, and the control structure determines the working frequency of the source water circulating pump 20 according to the received data acquired by the first temperature sensor and the second temperature sensor; the control mechanism controls the working states of the first submersible pump 2 and the second submersible pump 8 according to the received water level data acquired by the water level measuring instrument; when the water level data is lower than a preset value, the control mechanism controls the first submersible pump 2 or the second submersible pump 8 to be started;
the working mode of this embodiment is as follows:
when hot water is prepared, a newly built water well 7 is used as a pumping well, and the mine shaft 1 is used as a drainage well; when the heat source water is pumped, the control mechanism controls the second valve 5, the third valve 12, the fifth valve 15 and the sixth valve 19 to be opened, and the energy-saving circulating pump 23 and the source water circulating pump 20 are used for starting; when the water level in the sedimentation tank 13 is lower than a preset value, the control mechanism controls the second submersible pump 8 to start, and the heat source water flows to the sedimentation tank 13 through the second water pumping pipe 9 and the water pumping pipe 14 under the action of the second submersible pump 8, so that impurities in the heat source water are precipitated and filtered in the sedimentation tank 13; under the action of the source water circulating water pump 20, the precipitated and filtered heat source water flows to the heat pump unit 16 through the third water pumping pipe 17, and the heat pump unit 16 extracts heat in the heat source water; the hot water at the energy utilization end 21 flows to the heat pump unit 16 through the fourth water pumping pipe 22 under the action of the energy utilization end circulating pump 23, and the heat pump unit 16 heats the hot water by utilizing the extracted heat and conveys the hot water to the energy utilization end 21 through the fourth water pumping pipe 24; after the heat of the heat source water is extracted by the heat pump unit 16, the heat source water is discharged to the mine shaft 1 through the third water discharge pipe 18 and the first water discharge pipe 4, and the heat source water is gradually heated and recycled to the newly built water well 7 from shallow to deep through the rock soil and the well water, and the next cycle is started.
When cold water is prepared, the mine shaft 1 is used as a pumping well, and the newly-built well 7 is used as a drainage well; the control mechanism controls the first valve 6, the fourth valve 11, the fifth valve 15 and the sixth valve 19 to be opened, and the source water circulating pump 20 and the energy-end circulating pump 23 are started; when the water level in the sedimentation tank 13 is lower than a set value, the control mechanism controls the first submersible pump 2 to start, cold source water flows to the sedimentation tank 13 through the first water suction pipe 3 and the water suction pipe 14 under the action of the first submersible pump 2, and impurities in the cold source water are precipitated and filtered in the sedimentation tank 13; the cold source water after precipitation and filtration flows to the heat pump unit 16 through the third water pumping pipe 17 under the action of the source water circulating water pump 20; cold water at the energy utilization end 21 flows to the heat pump unit 16 under the action of the energy utilization end circulating pump 23, and the heat pump unit 16 absorbs heat in the cold water and releases the heat into cold source water; the cold source water after temperature rise flows to the newly built water well 7 through the third water drain pipe 18 and the second water drain pipe 10, and after gradually cooling from deep to shallow through rock soil and well water, the cold source water is recycled to the vicinity of the surface of the underground water level, and the next cycle is started.
In this embodiment, the control mechanism is a plc controller; the plc controller is respectively connected with the first submersible pump 2, the second submersible pump 8, the first valve 6, the second valve 5, the third valve 12, the fourth valve 11, the fifth valve 15, the sixth valve 19, the energy-consumption-end circulating pump 23, the heat pump unit 16, the water level measuring instrument, the first temperature sensor and the second temperature sensor through signal wires; the diameters of the first submersible pump 2 and the second submersible pump 8 are 250mm; the number of heat pump units 16 is 3.
Example 2
This embodiment differs from embodiment 1 in that: the heat-dissipating system is also included; the mine shaft 1 is a No. 3 abandoned mine, the depth is 620m, the depth of the newly-built well 7 is 620m, and the distance between the newly-built well 7 and the mine shaft 1 is 300m; the volume of the sedimentation tank 13 is 30 m;
the auxiliary heat radiation system comprises a shallow water source well 25 and a heat pump water heater 28;
the depth of the shallow water source well 25 is 200m, and a fifth water pumping pipe 27 is arranged in the shallow water source well 25; one end of the fifth water pumping pipe 27 is connected with a third submersible pump 26, the third submersible pump 26 is in communication connection with a plc controller, and when water level data received by the plc controller is lower than a set value, the plc controller controls the third submersible pump 26 to start; the heat pump water heater 28 is provided with a sixth water suction pipe 29; the sixth water pumping pipe 29 is provided with a circulating pump 30, and the circulating pump 30 is in communication connection with the plc controller;
the shallow water source well 25 is communicated with the sedimentation tank 13 through a fifth water pumping pipe 27; the heat pump water heater 28 is communicated with the sedimentation tank 13 through a sixth water suction pipe 29;
when cold water is prepared, when the temperature of cold source water entering the heat pump unit 16 is higher than a set value, the plc controller controls the third submersible pump 26 to start, well water in the shallow water source well 25 enters the sedimentation tank 13 through the fifth water pumping pipe 27 under the action of the third submersible pump 26, and the temperature of the cold source water in the sedimentation tank 13 is reduced, so that the cold source water entering the heat pump unit 16 is kept within a set range;
the plc controller controls the circulating pump 30 to start, the cold source water in the sedimentation tank 13 is extracted, the heat pump water heater 28 absorbs the heat of the cold source water to prepare high-temperature hot water, and the cold source water is returned to the sedimentation tank 13 after the temperature of the cold source water is reduced.
Example 3
This embodiment differs from the other embodiments in that: the auxiliary heat dissipation system is a cooling tower 31.
The cooling tower 31 is installed with a fifth drain pipe 32 and a sixth drain pipe 34; the fifth drain pipe 32 is provided with a seventh valve 33, and the seventh valve 33 is in communication connection with the plc controller;
the fifth drain pipe 32 is communicated with the third drain pipe 18, and cold source water firstly flows through the communication end and then flows through the sixth valve 19; the sixth drain pipe 34 communicates with the second drain pipe 10;
when the temperature of the cold source water flowing out of the heat pump unit 16 is higher than a set value, the plc controller controls the seventh valve 33 to be opened and the sixth valve 19 to be closed, the cold source water flows into the cooling tower 31, the cooling tower 31 reduces the temperature of the cold source water by radiating heat to the outdoor air, and the cooled cold source water is discharged through the sixth drain pipe 34 and the second drain pipe 10, so that the heat discharged into the ground is reduced.
Example 4
This embodiment differs from the other embodiments in that: the heat pump unit 16 is divided into a primary heat pump unit 35 and a secondary heat pump unit 54; the cascade utilization is realized between the primary heat pump unit 35 and the secondary heat pump unit 54.
The first-stage heat pump unit 35 is provided with a seventh water suction pipe 38, an eighth water suction pipe 45, a ninth water suction pipe 41 and a ninth water discharge pipe 44; the seventh water suction pipe 38 is provided with an eighth valve 40 and a ninth valve 39, the seventh water suction pipe 38 is connected with the water suction pipe 36 of the heat pump unit, and the connecting end is positioned between the eighth valve 40 and the ninth valve 39; the heat pump unit water suction pipe 36 is provided with a first source water circulating water pump 37; the eighth water suction pipe 45 is provided with a tenth valve 46; the ninth water suction pipe 41 is provided with a first energy-end circulating pump 42; the second-stage heat pump unit 54 is provided with a tenth water suction pipe 47, a tenth water discharge pipe 49, an eleventh water suction pipe 51, and an eleventh water discharge pipe 53; the tenth water suction pipe 47 is provided with an eleventh valve 48, and the eleventh water discharge pipe 53 is provided with a second energy-use-end circulating pump 50;
the first-stage heat pump unit 35 is communicated with a first-stage energy utilization end 43 through a ninth water suction pipe 41 and a ninth water discharge pipe 44; the second-stage heat pump unit 54 is communicated with a second-stage energy utilization end 52 through an eleventh water suction pipe 51 and an eleventh water discharge pipe 53;
the pumping pipe 36 of the heat pump unit is communicated with the sedimentation tank 13; the seventh water pumping pipe 38 is communicated with the tenth water pumping pipe 47, and the communication end is positioned between the second-stage heat pump unit 54 and the eleventh valve 48; the eighth water pumping pipe 45 is communicated with the tenth water pumping pipe 47, and the communication position is positioned between the first-stage heat pump unit 35 and the tenth valve 46; the eighth water suction pipe 45 communicates with a tenth water discharge pipe 49; the eleventh drain pipe 53 communicates with the first drain pipe 4; the eleventh drain pipe 53 communicates with the second drain pipe 10;
the eighth valve 40, the ninth valve 39, the tenth valve 46, the eleventh valve 48, the first energy-use-end circulation pump 42, the second energy-use-end circulation pump 50 and the first source water circulation pump 37 are all in communication connection with the control mechanism, respectively.
When the temperature of the heat source water is higher, the available temperature difference of the heat source water is large, and the heat pump unit 16 can be utilized in a cascade manner; when hot water is prepared, the control mechanism controls the eighth valve 40 and the eleventh valve 48 to be opened, and the first source water circulating pump 37, the first energy-saving end circulating pump 42 and the second energy-saving end circulating pump 50 are started; under the action of the first source water circulating water pump 37, heat source water flows into the first-stage heat pump unit 35 through the heat pump unit water suction pipe 36 and the seventh water suction pipe 38, and the first-stage heat pump unit 35 extracts heat of the heat source water and releases the heat to the first-stage energy utilization end 43; at this time, the heat source water is still available, and flows into the secondary heat pump unit 54 through the eighth water suction pipe 45 and the tenth water suction pipe 47, and the secondary heat pump unit 54 extracts heat from the heat source water and releases the heat to the secondary energy use end 52; the heat source water which has been used flows to the mine shaft 1 through the eleventh drain pipe 53 and the first drain pipe 4 to the vicinity of the groundwater level surface.
When cold water is prepared, the control mechanism controls the eighth valve 40, the ninth valve 39 and the tenth valve 46 to be opened, and the eleventh valve 48 to be closed, and the first source water circulating pump 37, the first energy-end circulating pump 42 and the second energy-end circulating pump 50 are started; the cold source water in the sedimentation tank 13 flows to the first-stage heat pump unit 35 through the heat pump unit water suction pipe 36 and the seventh water suction pipe 38 under the action of the first source water circulating water pump 37, the heat of cold water at the energy-absorbing end 21 absorbed by the heat pump unit 16 is released into the cold source water, and the cold source water flows to the newly-built water well 7 through the eighth water suction pipe 45, the eleventh water discharge pipe 53 and the second water discharge pipe 10; the cold source water in the sedimentation tank 13 flows to the secondary heat pump unit 54 through the heat pump unit water suction pipe 36, the seventh water suction pipe 38 and the tenth water suction pipe 47 under the action of the first source water circulating water pump 37, the secondary heat pump unit 54 absorbs the heat of the cold water in the secondary energy use end 52 and releases the heat to the cold source water, and the cold source water flows to the newly-built water well 7 through the tenth water discharge pipe 49 and the second water discharge pipe 10.
In this embodiment, the control mechanism is a plc controller, and the plc controller is connected to the eighth valve 40, the ninth valve 39, the tenth valve 46, the eleventh valve 48, the first energy-saving-end circulation pump 42, the second energy-saving-end circulation pump 50, and the first source water circulation pump 37 through signal lines; the number of the heat pump units 16 is 6, wherein 3 groups are primary heat pump units 35, and 3 groups are secondary heat pump units 54.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The above is a preferred embodiment of the present application, and is not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. Clean cold and heat source system based on abandonment mine, its characterized in that: comprising the following steps:
the water source system is used for providing cold source water and heat source water and can exchange cold and heat with underground rock soil and well water; and
the energy station machine room is communicated with the water source system through a pipeline and is used for extracting the cold source water or the heat source water, preparing cold water or hot water and conveying the cold water or the hot water to an energy utilization end (21);
the water source system and the energy station machine room are used for realizing circulation of the cold source water and the heat source water;
the water source system includes:
a mine shaft (1), the mine shaft (1) being used for pumping water and draining water from the surface of the ground water level; and
a newly built water well (7), wherein the newly built water well (7) is used for realizing pumping or draining from a deep well lane;
further comprises: the auxiliary heat dissipation system is used for keeping the temperature of the cold source water within a set range;
a first water suction pipe (3) and a first water discharge pipe (4) are arranged in the mine shaft (1); one end of the first water pumping pipe (3) is provided with a first submersible pump (2), and the first submersible pump (2) is positioned below the water level of the mine shaft (1); the first water suction pipe (3) is provided with a first valve (6); the first drain pipe (4) is provided with a second valve (5); one end of the first drain pipe (4) is communicated with the energy station machine room;
the distance between the newly-built water well (7) and the mine shaft (1) is a set distance; a second water pumping pipe (9) and a second water draining pipe (10) are arranged in the newly-built water well (7), one end of the second water pumping pipe (9) is provided with a second submersible pump (8), and the second submersible pump (8) is positioned below the water level of the newly-built water well (7); the second water suction pipe (9) is provided with a third valve (12); one end of the second drain pipe (10) is communicated with the energy station machine room; the second drain pipe (10) is provided with a fourth valve (11);
the water source system further comprises:
a sedimentation tank (13), wherein the sedimentation tank (13) is used for precipitating and filtering impurities in the cold source water and the heat source water and replacing the cold source water and the heat source water; the sedimentation tank (13) is provided with a water suction pipe (14); the water suction pipe (14) is provided with a fifth valve (15); the water suction pipe (14) is communicated with the other end of the first water suction pipe (3); the water suction pipe (14) is communicated with the other end of the second water suction pipe (9).
2. The clean cold and heat source system based on abandoned mines according to claim 1, wherein: the energy station machine room comprises:
a heat pump unit (16), wherein the heat pump unit (16) is provided with a third water suction pipe (17) and a third water discharge pipe (18); the third water suction pipe (17) is provided with an active water circulating pump (20); the third drain pipe (18) is provided with a sixth valve (19); the heat pump unit (16) is communicated with the sedimentation tank (13) through the third water suction pipe (17); the heat pump unit (16) is communicated with the mine shaft (1) through the third drain pipe (18) and the first drain pipe (4); the heat pump unit (16) is communicated with the newly-built water well (7) through the third water drain pipe (18) and the second water drain pipe (10);
the heat pump unit (16) is also provided with a fourth water suction pipe (22) and a fourth water discharge pipe (24); the fourth water suction pipe (22) is provided with a useful energy end circulating pump (23); the heat pump unit (16) is communicated with one end of the fourth water suction pipe (22), and the other end of the fourth water suction pipe (22) is connected with the energy utilization end (21); the energy utilization end (21) is communicated with one end of the fourth drain pipe (24), and the other end of the fourth drain pipe (24) is communicated with the heat pump unit (16); and
the control mechanism is in communication connection with the first submersible pump (2), the second submersible pump (8), the first valve (6), the second valve (5), the third valve (12), the fourth valve (11), the fifth valve (15), the sixth valve (19), the source water circulating pump (20), the energy-consumption-end circulating pump (23) and the heat pump unit (16).
3. The clean cold and heat source system based on abandoned mines according to claim 2, wherein:
the heat pump unit (16) is divided into a first-stage heat pump unit (35) and a second-stage heat pump unit (54); the cascade utilization is arranged between the primary heat pump unit (35) and the secondary heat pump unit (54).
4. The clean cold and heat source system based on abandoned mines according to claim 2, wherein: the auxiliary heat dissipation system is one or more of a shallow water source well (25), a cooling tower (31) or a heat pump water heater (28).
5. The clean cold and heat source system based on abandoned mines according to claim 4, wherein: a fifth water pumping pipe (27) is arranged in the shallow water source well (25); one end of the fifth water suction pipe (27) is provided with a third submersible pump (26), and the other end of the fifth water suction pipe (27) is communicated with the sedimentation tank (13); the third submersible pump (26) is in communication with the control mechanism.
6. The clean cold and heat source system based on abandoned mines according to claim 4, wherein: the cooling tower (31) is provided with a fifth drain pipe (32) and a sixth drain pipe (34); the fifth drain pipe (32) is provided with a seventh valve (33), and the seventh valve (33) is in communication connection with the control mechanism; the cooling tower (31) is communicated with the heat pump unit (16) through the fifth drain pipe (32) and the third drain pipe (18); the sixth drain pipe (34) communicates with the second drain pipe (10).
7. The clean cold and heat source system based on abandoned mines according to claim 4, wherein: the heat pump water heater (28) is provided with a sixth water suction pipe (29); the sixth water suction pipe (29) is provided with a circulating pump (30), and the circulating pump (30) is in communication connection with the control mechanism;
the heat pump water heater (28) is communicated with the sedimentation tank (13) through the sixth water suction pipe (29).
8. The clean cold and heat source system based on abandoned mines according to any one of claims 2 to 7, wherein: the control mechanism is a controller.
CN202111516014.5A 2021-12-13 2021-12-13 Clean cold and heat source system based on abandoned mine Active CN114165944B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101089490A (en) * 2006-06-16 2007-12-19 Lg电子株式会社 Geothermal air conditioning system
WO2008122114A2 (en) * 2007-04-04 2008-10-16 Bardsley James E Coaxial borehole energy exchange system for storing and extracting underground cold
CN102562496A (en) * 2012-01-17 2012-07-11 天津大学 Middle/low-temperature geothermic efficient thermoelectric coupling combined supply system based on organic Rankine cycle (ORC)
CN105066666A (en) * 2015-07-22 2015-11-18 合肥淘能环境科技有限公司 Heat pump drying device with humidity and temperature adjusting function
CN109855221A (en) * 2019-03-22 2019-06-07 山东许厂煤矿有限公司 A kind of mine water residual heat extraction and application system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101089490A (en) * 2006-06-16 2007-12-19 Lg电子株式会社 Geothermal air conditioning system
WO2008122114A2 (en) * 2007-04-04 2008-10-16 Bardsley James E Coaxial borehole energy exchange system for storing and extracting underground cold
CN102562496A (en) * 2012-01-17 2012-07-11 天津大学 Middle/low-temperature geothermic efficient thermoelectric coupling combined supply system based on organic Rankine cycle (ORC)
CN105066666A (en) * 2015-07-22 2015-11-18 合肥淘能环境科技有限公司 Heat pump drying device with humidity and temperature adjusting function
CN109855221A (en) * 2019-03-22 2019-06-07 山东许厂煤矿有限公司 A kind of mine water residual heat extraction and application system

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