CN108643956B - System for generating electricity and cooling by utilizing geothermal energy in mining of deep mine - Google Patents
System for generating electricity and cooling by utilizing geothermal energy in mining of deep mine Download PDFInfo
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- CN108643956B CN108643956B CN201810476982.XA CN201810476982A CN108643956B CN 108643956 B CN108643956 B CN 108643956B CN 201810476982 A CN201810476982 A CN 201810476982A CN 108643956 B CN108643956 B CN 108643956B
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- water tank
- coiled pipe
- cold water
- refrigerating device
- heat
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- 238000001816 cooling Methods 0.000 title claims abstract description 17
- 238000005065 mining Methods 0.000 title abstract description 14
- 230000005611 electricity Effects 0.000 title abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000010248 power generation Methods 0.000 claims abstract description 8
- 238000009423 ventilation Methods 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G2007/007—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using heat pumps
-
- 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)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Other Air-Conditioning Systems (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a system for generating electricity and cooling by utilizing geothermal heat in mining of a deep mine. The geothermal power generation cooling system used in the deep mining of the mine comprises a coiled pipe, a heat pump, a hot water tank, a cold water tank, a thermoelectric generator, a grid-connected inverter and a refrigerating device; the coiled pipe is arranged in the main shaft, the ventilation shaft and the working roadway for heat collection, one end of the coiled pipe is connected with the refrigerating device, and the other end of the coiled pipe is connected with the heat pump; cold water entering from a refrigerating device or a cold water filling port of the refrigerating device collects heat of a deep mine through a coiled pipe and then enters a heat pump; the heat pump is used for preparing warm water into temperature difference water which is respectively communicated with the hot water tank and the cold water tank; the hot water tank and the cold water tank are connected with a thermoelectric generator for power generation, and the generated direct current is converted into alternating current through a grid-connected inverter and is connected to a power grid; after the thermoelectric generator collects energy, water in the hot water tank and the cold water tank is introduced into the refrigerating device; the cold water obtained by the refrigerating device enters the coiled pipe to collect heat and circularly flow.
Description
Technical Field
The invention belongs to the technical field of mining, and particularly relates to a system for generating electricity and cooling by utilizing geothermal heat in the mining of a mine deep well.
Background
With the development of science and technology and the progress of mining technology, the mining of mines is also developed to a deeper part more and more. The mining depth depends not only on the mining technology, but also on the working environment of the deep roadways of the mine. Because all mineral resources needing to be mined by a mine, including coal, metal, non-metal ores and the like, are subjected to thermal damage of higher temperature when reaching a certain mining depth. When the ambient temperature in the mine exceeds the temperature which can be tolerated by the normal heat balance of the human body, the labor efficiency of workers can be reduced, the accident frequency is increased, the health is damaged, even the equipment can not work normally due to overhigh temperature, and the like. Therefore, the prevention and control of geothermal hazards are necessary during deep mine mining.
At present, the treatment measures of mine heat damage are generally as follows: the air temperature is reduced by improving mine ventilation and spraying technology, personal cooling working clothes and the like, and low-temperature gas or low-temperature water is introduced into the underground of some mines to reduce the overall temperature of the mines. The disadvantage of improving mine ventilation is that a large amount of electrical energy needs to be consumed; the spraying technology has the defects that the spraying technology has great limitation on the arrangement site; the cooling clothes have the defects that the cooling clothes can not provide all-round cooling, and simultaneously limit the actions of underground personnel, thereby influencing the working efficiency; the defects of introducing low-temperature gas and low-temperature water are that the effect is better in a shallow well area, and the cooling effect is not obvious in a deep well. Therefore, no ideal method for preventing the heat damage of the deep well exists at present.
Disclosure of Invention
The invention aims to solve the problem of geothermal disaster of deep well exploitation, provides a self-circulation system for generating temperature difference power and reducing temperature by using deep well geothermal energy, and can effectively relieve the geothermal disaster, and meanwhile, the geothermal power is used for electrical appliances of a mine to improve the underground working environment.
In order to achieve the purpose, the technical scheme is as follows:
the geothermal power generation cooling system used in the deep mining of the mine comprises a coiled pipe, a heat pump, a hot water tank, a cold water tank, a thermoelectric generator, a grid-connected inverter and a refrigerating device;
the coiled pipe is arranged in the main shaft, the ventilation shaft and the working roadway for heat collection, one end of the coiled pipe is connected with the refrigerating device, and the other end of the coiled pipe is connected with the heat pump; cold water entering from a refrigerating device or a cold water filling port of the refrigerating device collects heat of a deep mine through a coiled pipe and then enters a heat pump;
the heat pump is used for preparing temperature difference water from warm water flowing out after heat is collected by the coiled pipe, and the temperature difference water is respectively led to the hot water tank and the cold water tank;
the hot water tank and the cold water tank are connected with a thermoelectric generator for power generation, and the generated direct current is converted into alternating current through a grid-connected inverter and is connected to a power grid;
after the thermoelectric generator collects energy, water in the hot water tank and the cold water tank is introduced into the refrigerating device; the cold water obtained by the refrigerating device enters the coiled pipe to collect heat and circularly flow.
According to the scheme, the current generated by the thermoelectric generator is used for supporting the work of the refrigerating device and the heat pump.
Compared with the prior art, the invention has the following advantages:
1) the underground heating disaster in the deep well can be effectively relieved, a more comfortable working environment is provided for underground personnel and machinery, and the production efficiency is improved;
2) the system is completely driven by the terrestrial heat after entering the working state, so that the mine power consumption is reduced, the energy and the cost are saved, and the system conforms to the theme of green mines;
3) the heat collecting device of the system is laid on the roadway and the well wall, so that mine production is not influenced, harmful substances are not generated, and too large space is not occupied.
Drawings
FIG. 1: the invention utilizes the working schematic diagram of a geothermal power generation cooling system;
FIG. 2: a 3D simulation of the serpentine tube of the invention;
FIG. 3: a cross-sectional view of the serpentine tube of the invention;
FIG. 4: the invention relates to a working principle diagram of a heat pump;
the system comprises a heat pump 1, a hot water tank 2, a cold water tank 3, a thermoelectric generator 4, a grid-connected inverter 5, a refrigerating device 6, a coiled pipe 7, an evaporator 8, a condenser 9, a compressor 10 and an expansion valve 11.
Detailed Description
The following embodiments are further illustrative of the technical solutions of the present invention, but should not be construed as limiting the scope of the present invention.
The invention discloses a system for generating electricity and cooling by utilizing terrestrial heat in the deep mining of a mine, which is shown in the attached drawing 1: the system comprises a coiled pipe 7, a heat pump 1, a hot water tank 2, a cold water tank 3, a thermoelectric generator 4, a grid-connected inverter 5 and a refrigerating device 6;
the coiled pipe 7 is arranged in the main shaft, the ventilation shaft and the working roadway for heat collection, one end of the coiled pipe is connected with the refrigerating device 6, and the other end of the coiled pipe is connected with the heat pump 1; cold water entering from the refrigerating device 6 or a cold water filling port thereof collects heat of the deep mine through the coiled pipe 7 and then enters the heat pump 1;
the heat pump 1 is used for preparing temperature difference water from hot water flowing out after heat is collected by the coiled pipe 7, and the temperature difference water is respectively led to the hot water tank 2 and the cold water tank 3;
the hot water tank 2 and the cold water tank 3 are connected with a thermoelectric generator 4 for power generation, and the generated direct current is converted into alternating current through a grid-connected inverter 5 and is connected to a power grid;
after the thermoelectric generator 4 collects energy, water in the hot water tank and the cold water tank is introduced into the refrigerating device 6; the cold water obtained by the refrigerating device enters the coiled pipe to collect heat and circularly flow.
The serpentine pipe is designed to be flat and is close to a rock wall, the contact area between the serpentine pipe and the rock wall is increased, flowing water fully absorbs heat in rock, and meanwhile, the serpentine pipe covers a heat insulation material towards the air, so that heat is reduced to diffuse into the air, a better cooling effect is achieved, and the heat collection efficiency is improved. The serpentine pipeline is arranged in a grading way, so that small circulation in an area is formed, and the power consumption of water lifting is saved.
After the warm water in the coiled pipe is introduced into the heat pump, part of the warm water releases heat for cooling, and cooling water is introduced into a cold water tank; the other part absorbs the heat emitted by the cooling water and then is heated, and the heated water is introduced into a hot water tank; therefore, the water flow has larger temperature difference and is used for generating electricity.
The working principle of the heat pump is shown in figure 4, when warm water collected by the coiled pipe flows into the evaporator 8, the warm water is discharged and cooled, and then is injected into the cold water tank, meanwhile, the refrigerant evaporates in the evaporator 8 to absorb heat, the generated steam is sucked by the compressor 10 and compressed to high pressure to enter the condenser 9, the refrigerant steam is condensed in the condenser, simultaneously, the heat is discharged and the warm water is heated, then the hot water tank is injected, the liquid refrigerant enters the expansion valve 11 to perform adiabatic expansion, and does work outwards to enable the liquid refrigerant to reach low temperature, and then the liquid refrigerant enters the evaporator to absorb the heat of the heat pump from water to perform the next cycle.
The thermoelectric generator is connected with the grid-connected inverter, the electric energy generated by the thermoelectric generator is direct current, the direct current needs to be converted into alternating current through the grid-connected inverter, the output voltage of the thermoelectric generator is basically the voltage of a power grid and can be slightly raised, the output current is generally sine wave, the frequency and the phase are completely consistent with the commercial power, and the thermoelectric generator can be directly introduced into a mine power grid for being used by a power consumer.
The water of hot-water tank and cold water tank is behind the electricity generation, and the difference in temperature diminishes, mixes back rethread refrigerating plant reduces the temperature back, utilizes the water pump to take cold water out, lets in snakelike pipeline once more to realize cooling and thermal collection, form the hydrologic cycle in the region. The refrigerating device, the heat pump and the like can use electric energy generated by the thermoelectric generator, the damage of deep well geothermal energy is solved under the condition of not consuming external electricity, and meanwhile, the electric energy can also be used by electric appliances such as a fan, a lifting device and the like in a mine.
Claims (1)
1. The geothermal power generation cooling system is characterized by comprising a coiled pipe, a heat pump, a hot water tank, a cold water tank, a thermoelectric generator, a grid-connected inverter and a refrigerating device;
the coiled pipe is arranged in the main shaft, the ventilation shaft and the working roadway for heat collection, one end of the coiled pipe is connected with the refrigerating device, and the other end of the coiled pipe is connected with the heat pump; cold water obtained from the refrigerating device collects heat of the deep mine through a coiled pipe and then enters a heat pump;
the heat pump is used for preparing temperature difference water from warm water flowing out after heat is collected by the coiled pipe, and the temperature difference water is respectively led to the hot water tank and the cold water tank;
the hot water tank and the cold water tank are connected with a thermoelectric generator for power generation, and the generated direct current is converted into alternating current through a grid-connected inverter and is connected to a power grid; the current generated by the thermoelectric generator is used for supporting the work of a refrigerating device and a heat pump;
after the thermoelectric generator collects energy, water in the hot water tank and the cold water tank is introduced into the refrigerating device; the cold water obtained by the refrigerating device enters the coiled pipe to collect heat and circularly flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476982.XA CN108643956B (en) | 2018-05-18 | 2018-05-18 | System for generating electricity and cooling by utilizing geothermal energy in mining of deep mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476982.XA CN108643956B (en) | 2018-05-18 | 2018-05-18 | System for generating electricity and cooling by utilizing geothermal energy in mining of deep mine |
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| Publication Number | Publication Date |
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| CN108643956A CN108643956A (en) | 2018-10-12 |
| CN108643956B true CN108643956B (en) | 2020-02-18 |
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| CN201810476982.XA Active CN108643956B (en) | 2018-05-18 | 2018-05-18 | System for generating electricity and cooling by utilizing geothermal energy in mining of deep mine |
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| CN111649506A (en) * | 2020-06-16 | 2020-09-11 | 中陕核宜威新能源有限公司 | Ground source heat pump heat balance and heat recovery system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316083A (en) * | 2008-07-03 | 2008-12-03 | 无锡明惠通科技有限公司 | Tunnel type waste heat recovery semiconductor power generation method and device by temperature difference |
| CN101672188A (en) * | 2009-09-23 | 2010-03-17 | 同济大学 | Lining heat system used at tunnel portal |
| CN101672189A (en) * | 2009-09-23 | 2010-03-17 | 同济大学 | Ground source heat pump type heating system used for heat insulating ditch in tunnel |
| CN202017580U (en) * | 2011-01-20 | 2011-10-26 | 顾为东 | Wind energy storage power supply system |
| CN202737789U (en) * | 2012-04-19 | 2013-02-13 | 苟仲武 | Thermoelectric power generation system and thermoelectric generator |
| KR101239777B1 (en) * | 2012-10-17 | 2013-03-06 | 한국지질자원연구원 | Geothermal power generation system using heat exchange of exhaust gas and molten salt |
| CN204313505U (en) * | 2014-12-14 | 2015-05-06 | 安徽建筑大学 | The two temperature difference electricity generation device of a kind of solar water heater |
| CN105162232A (en) * | 2015-10-14 | 2015-12-16 | 成都理工大学 | High ground temperature tunnel cooling heat dissipation and heat energy conversion apparatus |
| CN204992736U (en) * | 2015-10-14 | 2016-01-20 | 成都理工大学 | Cooling heat dissipation of high ground temperature tunnel and heat energy conversion device |
| CN207245732U (en) * | 2017-09-15 | 2018-04-17 | 西南交通大学 | A kind of phase change concrete suitable for subway tunnel couples cooling system with underground pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003278539A (en) * | 2002-03-22 | 2003-10-02 | Komatsu Ltd | Heat using system |
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2018
- 2018-05-18 CN CN201810476982.XA patent/CN108643956B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316083A (en) * | 2008-07-03 | 2008-12-03 | 无锡明惠通科技有限公司 | Tunnel type waste heat recovery semiconductor power generation method and device by temperature difference |
| CN101672188A (en) * | 2009-09-23 | 2010-03-17 | 同济大学 | Lining heat system used at tunnel portal |
| CN101672189A (en) * | 2009-09-23 | 2010-03-17 | 同济大学 | Ground source heat pump type heating system used for heat insulating ditch in tunnel |
| CN202017580U (en) * | 2011-01-20 | 2011-10-26 | 顾为东 | Wind energy storage power supply system |
| CN202737789U (en) * | 2012-04-19 | 2013-02-13 | 苟仲武 | Thermoelectric power generation system and thermoelectric generator |
| KR101239777B1 (en) * | 2012-10-17 | 2013-03-06 | 한국지질자원연구원 | Geothermal power generation system using heat exchange of exhaust gas and molten salt |
| CN204313505U (en) * | 2014-12-14 | 2015-05-06 | 安徽建筑大学 | The two temperature difference electricity generation device of a kind of solar water heater |
| CN105162232A (en) * | 2015-10-14 | 2015-12-16 | 成都理工大学 | High ground temperature tunnel cooling heat dissipation and heat energy conversion apparatus |
| CN204992736U (en) * | 2015-10-14 | 2016-01-20 | 成都理工大学 | Cooling heat dissipation of high ground temperature tunnel and heat energy conversion device |
| CN207245732U (en) * | 2017-09-15 | 2018-04-17 | 西南交通大学 | A kind of phase change concrete suitable for subway tunnel couples cooling system with underground pipe |
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| CN108643956A (en) | 2018-10-12 |
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