CN111306016A - Geothermal energy power generation system and method - Google Patents
Geothermal energy power generation system and method Download PDFInfo
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- CN111306016A CN111306016A CN202010192930.7A CN202010192930A CN111306016A CN 111306016 A CN111306016 A CN 111306016A CN 202010192930 A CN202010192930 A CN 202010192930A CN 111306016 A CN111306016 A CN 111306016A
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- power generation
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a geothermal energy power generation system and a method, which comprises a geothermal power generation module, a dry heat layer power generation module, a steam turbine power generation module, a first well, a second well, a power generation module connected with the first well and the second well, and a circulation module, wherein the invention absorbs heat from liquid state to gas state through an intermediate medium, and converts kinetic energy into electric energy by pushing a rotor to rotate through gas, in addition, the temperature difference of the dry heat bottom layer in the second well is used for generating part of electric quantity by the temperature difference generating module, the electric quantity is stored in the ground load, and when gas passes through the steam turbine, because the internal and external temperatures of the steam turbine are inconsistent, the shell of the steam turbine is provided with a temperature difference power generation module for power generation, the heat absorbed by the intermediate medium is fully utilized for power generation and stored on a ground load, the first condenser and the second condenser are driven to work through the bottom surface load, and the energy utilization rate in the first well is improved.
Description
Technical Field
The invention relates to the field of geothermal power generation, in particular to a geothermal energy power generation system and a geothermal energy power generation method.
Background
It is well known that with the rapid growth of the world's population economy, energy consumption increases dramatically. Today, people are eager for greenness and environment protection in the situation that environmental pollution is severe day by day and living environment is damaged day by day. In recent years, human beings have been continuously exploring the use of renewable energy sources, although we have found such as: solar energy, nuclear fusion energy, biological energy, wind energy, water conservancy energy, billow energy, tidal energy, underground heat energy and other new energy sources, but different technologies and equipment are needed for developing and utilizing the energy sources. The conversion rate of the energy sources in the prior art is not high, and the energy sources can better serve the lives of people if the conversion rate of the energy sources can be improved while the energy sources are exploited.
Among the green energy sources, the hot dry rock is more and more paid attention by people, the hot dry rock is also called an enhanced geothermal energy system, the total amount of hot dry rock resources in China is equivalent to 188 hundred million tons of standard coal, and if the hot dry rock is reasonably developed and utilized, the hot dry rock plays a very positive role in environmental protection and energy utilization in China.
Disclosure of Invention
The invention aims to provide a geothermal energy power generation system and a method.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a geothermal energy power generation system comprises a geothermal power generation module, a dry heat layer power generation module and a steam turbine power generation module, wherein the geothermal power generation module comprises a first well, a steam turbine unit and a generator set, the first well, the steam turbine unit and the generator set are connected through a pipeline, an intermediate medium is arranged in the pipeline, the dry heat layer power generation module comprises a second well, a temperature difference power generation module, a load line and a ground load, the temperature difference power generation module is positioned in the second well, the ground load is connected with the temperature difference power generation module through the load line, the ground load voltage output end is respectively and electrically connected with a first condenser and a second condenser power input end, one end of the first condenser is connected with a gas-liquid separator, the other end of the first condenser is connected with a liquid storage tank, the input port of the gas-liquid separator is connected with the pipeline in the first well, the inlet of the second condenser is connected to the outlet of the steam turbine, and the outlet of the second condenser is connected to the inlet of the liquid storage tank.
Furthermore, a medium circulating pipeline is arranged in the first well, an inlet of the medium circulating pipeline is connected to an outlet of the liquid storage tank, and an outlet of the medium pipeline is connected to an inlet of the gas-liquid separator.
Further, the second well comprises a surface layer ground and a dry hot rock reservoir; the upper part of the temperature difference power generation module is arranged in the surface layer ground, and the bottom of the temperature difference power generation module is arranged in the hot dry rock storage layer.
Furthermore, the load lines comprise a positive line and a negative line, and the positive line and the negative line are respectively connected to the positive interface and the negative interface of the ground load.
Further, the steam turbine power generation module comprises a shell and a rotor, wherein the rotor is rotatably connected inside the shell, the shell comprises a heat conduction layer, a high-temperature layer and a low-temperature layer from inside to outside, the low-temperature layer is connected to a ground load through a negative pole line, and the high-temperature layer is connected to the ground load through a positive pole line.
Furthermore, the intermediate medium is one or a mixture of several of low ethylene oxide, ethyl chloride, ethylamine, acetaldehyde, methyl formate, diethyl ether and dichloromethane.
The invention also provides a geothermal energy power generation method, which comprises the following steps:
s1: injecting an intermediate medium into a medium pipeline in the first well, wherein the medium is expanded and vaporized by heat conduction and enters a gas-liquid separator;
s2: the vaporized intermediate medium in the gas-liquid separator enters a steam turbine to push a rotor to rotate, and kinetic energy is converted into electric energy through a generator set;
s3: generating power in the second well through a temperature difference power generation module, storing the power in a ground load, transmitting the power generated by the temperature difference generated on the steam turbine through a high-temperature layer and a low-temperature layer into the ground load, and transmitting the voltage to the first condenser and the second condenser through the ground load;
s4: conveying the gas-liquid mixture remaining in the gas-liquid separator in the step S1 to a first condenser through a pipeline, and condensing the mixture to a liquid state by the first condenser and conveying the liquid state into a liquid storage tank;
s5: condensing the gas discharged from the steam turbine in the step S2 to liquid state through a second condenser and transmitting the liquid state into a liquid storage tank;
s6: and conveying the liquid intermediate medium in the liquid storage tank to a medium pipeline in the first well to complete circulation.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention absorbs heat from liquid state to gas state through the intermediate medium, and converts kinetic energy into electric energy by pushing the rotor to rotate through gas, in addition, a part of electric quantity is generated by using the temperature difference power generation module through the temperature difference of the dry heat bottom layer in the second well, the electric quantity is stored in the ground load, and when the gas passes through the steam turbine, the temperature difference power generation module is arranged on the shell of the steam turbine to generate power due to the fact that the internal temperature and the external temperature of the steam turbine are different, the heat absorbed by the intermediate medium is fully utilized to generate power and stored on the ground load, the first condenser and the second condenser are driven to work through the bottom load, and the energy utilization rate in the first well.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the steam turbine of the present invention;
Detailed Description
While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions are made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Unless otherwise defined, technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The terms "a" or "an," and the like, do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalent, and does not exclude other elements or items. The terms "disposed" or "connected," and the like, are not restricted to physical or mechanical connections, nor are they restricted to direct or indirect connections.
As shown in fig. 1 and 2, the geothermal energy power generation system comprises a geothermal power generation module, a dry heat layer power generation module and a steam turbine 4 power generation module, wherein the geothermal power generation module comprises a first well 1, a steam turbine 4 group and a generator set 5, the first well 1, the steam turbine 4 group and the generator set 5 are connected through a pipeline, an intermediate medium is arranged in the pipeline, the dry heat layer power generation module comprises a second well 13, a thermoelectric power generation module 11, a load line and a ground load 7, the thermoelectric power generation module 11 is positioned in the second well 13, the ground load 7 is connected with the thermoelectric power generation module 11 through the load line, a voltage output end of the ground load 7 is respectively and electrically connected with a power input end of the first condenser 2 and the second condenser 6, one end of the first condenser 2 is connected with a gas-liquid separator 3, the other end of the first condenser is connected with a liquid storage tank 14, an input port of the gas-, 3 steam outlet of vapour and liquid separator connects in 4 gas inlets of group of steam turbine, 6 access connection of No. two condensers are on 4 exports of steam turbine, and 6 exit connection of No. two condensers are on the import of liquid storage pot 14.
In this embodiment, a medium circulation pipeline is arranged in the first well 1, an inlet of the medium circulation pipeline is connected to an outlet of the liquid storage tank 14, and an outlet of the medium pipeline is connected to an inlet of the gas-liquid separator 3.
In this embodiment, the second well 13 includes a surface layer, a hot dry rock reservoir 12; the upper part of the thermoelectric generation module 11 is arranged in the surface layer ground, and the bottom part of the thermoelectric generation module is arranged in the hot dry rock reservoir 12.
In this embodiment, the load lines include a positive line 9 and a negative line 8, and the positive line 9 and the negative line 8 are respectively connected to positive and negative interfaces of the ground load 7.
In this embodiment, the steam turbine power generation module includes a housing and a rotor 18, the rotor 18 is rotatably connected inside the housing, the housing includes a heat conduction layer 17, a high temperature layer 15 and a low temperature layer 16 from inside to outside, the low temperature layer 16 is connected to the ground load 7 through a negative electrode line 8, and the high temperature layer 15 is connected to the ground load 7 through a positive electrode line 9.
In this embodiment, the intermediate medium is one or a mixture of several of low-ethylene oxide, ethyl chloride, ethylamine, acetaldehyde, methyl formate, diethyl ether and dichloromethane.
The geothermal energy power generation method is characterized by comprising the following steps
S1: injecting an intermediate medium into a medium pipeline in the first well 1, and leading the medium to enter a gas-liquid separator 3 after the medium is subjected to heat conduction expansion and vaporization;
s2: the intermediate medium in the gas-liquid separator 3 is vaporized and enters the steam turbine 4 to push the rotor 17 to rotate, and kinetic energy is converted into electric energy through the generator set 5;
s3: the temperature difference between the bottom surface 10 of the surface layer and the hot dry rock reservoir 12 is caused by the temperature difference in the second well 13, so that the temperature difference power generation module 11 generates power, the power is stored in the ground load 7, the power generated by the temperature difference generated on the steam turbine 4 through the high-temperature layer 15 and the low-temperature layer 16 is transmitted to the ground load 7, and the voltage is transmitted to the first condenser 2 and the second condenser 6 through the ground load 7;
s4: the gas-liquid mixture remaining in the gas-liquid separator 3 in the step S1 is conveyed to the first condenser 2 through a pipeline, and the first condenser 2 condenses the mixture into a liquid state and transmits the liquid state to the liquid storage tank 14;
s5: condensing the gas exhausted from the steam turbine 4 in the step S2 to a liquid state through a second condenser 6 and transmitting the liquid state to a liquid storage tank 14;
s6: and conveying the liquid intermediate medium in the liquid storage tank 14 to a medium pipeline in the first well 1 to finish circulation.
The invention absorbs heat from liquid state to gas state through the intermediate medium, and converts kinetic energy into electric energy by pushing the rotor to rotate through gas, in addition, a part of electric quantity is generated by using the temperature difference power generation module through the temperature difference of the dry heat bottom layer in the second well, the electric quantity is stored in the ground load, and when the gas passes through the steam turbine, the temperature difference power generation module is arranged on the shell of the steam turbine to generate power due to the fact that the internal temperature and the external temperature of the steam turbine are different, the heat absorbed by the intermediate medium is fully utilized to generate power and stored on the ground load, the first condenser and the second condenser are driven to work through the bottom load, and the energy utilization rate in the first well.
Claims (7)
1. A geothermal energy power generation system is characterized by comprising a geothermal power generation module, a dry heat layer power generation module and a steam turbine power generation module, wherein the geothermal power generation module comprises a first well, a steam turbine unit and a generator unit, the first well, the steam turbine unit and the generator unit are connected through a pipeline, an intermediate medium is arranged in the pipeline, the dry heat layer power generation module comprises a second well, a temperature difference power generation module, a load line and a ground load, the temperature difference power generation module is positioned in the second well, the ground load is connected with the temperature difference power generation module through the load line, a ground load voltage output end is respectively and electrically connected with a first condenser and a second condenser power input end, one end of the first condenser is connected with a gas-liquid separator, the other end of the first condenser is connected with a liquid storage tank, an input port of the gas-liquid separator is connected with a pipeline in the first well, a, the inlet of the second condenser is connected to the outlet of the steam turbine, and the outlet of the second condenser is connected to the inlet of the liquid storage tank.
2. The geothermal energy power generation system according to claim 1, wherein a medium circulation pipeline is arranged in the first well, an inlet of the medium circulation pipeline is connected to an outlet of the liquid storage tank, and an outlet of the medium circulation pipeline is connected to an inlet of the gas-liquid separator.
3. The geothermal energy power generation system of claim 1, wherein the second well comprises a surface earth, a hot dry rock reservoir; the upper part of the temperature difference power generation module is arranged in the surface layer ground, and the bottom of the temperature difference power generation module is arranged in the hot dry rock storage layer.
4. The geothermal energy power generation system according to claim 1, wherein the load lines comprise positive lines and negative lines, and the positive lines and the negative lines are respectively connected to a ground load positive-negative electrode interface.
5. The geothermal energy power generation system according to claim 1, wherein the steam turbine power generation module comprises a housing and a rotor, the rotor is rotatably connected inside the housing, the housing comprises a heat conduction layer, a high temperature layer and a low temperature layer from inside to outside, the low temperature layer is connected to the ground load through a negative line, and the high temperature layer is connected to the ground load through a positive line.
6. The geothermal energy power generation system according to claim 1, wherein the intermediate medium is one or a mixture of low ethylene oxide, ethyl chloride, ethyl amine, acetaldehyde, methyl formate, ethyl ether and methylene chloride.
7. A geothermal energy power generation method is characterized by comprising the following steps
S1: injecting an intermediate medium into a medium pipeline in the first well, wherein the medium is expanded and vaporized by heat conduction and enters a gas-liquid separator;
s2: the vaporized intermediate medium in the gas-liquid separator enters a steam turbine to push a rotor to rotate, and kinetic energy is converted into electric energy through a generator set;
s3: generating power in the second well through a temperature difference power generation module, storing the power in a ground load, transmitting the power generated by the temperature difference generated on the steam turbine through a high-temperature layer and a low-temperature layer into the ground load, and transmitting the voltage to the first condenser and the second condenser through the ground load;
s4: conveying the gas-liquid mixture remaining in the gas-liquid separator in the step S1 to a first condenser through a pipeline, and condensing the mixture to a liquid state by the first condenser and conveying the liquid state into a liquid storage tank;
s5: condensing the gas discharged from the steam turbine in the step S2 to liquid state through a second condenser and transmitting the liquid state into a liquid storage tank;
s6: and conveying the liquid intermediate medium in the liquid storage tank to a medium pipeline in the first well to complete circulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010192930.7A CN111306016B (en) | 2020-03-18 | 2020-03-18 | Geothermal energy power generation system and method |
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| CN202010192930.7A CN111306016B (en) | 2020-03-18 | 2020-03-18 | Geothermal energy power generation system and method |
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| CN111306016A true CN111306016A (en) | 2020-06-19 |
| CN111306016B CN111306016B (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271957A (en) * | 2020-10-30 | 2021-01-26 | 重庆星科裕信息科技有限公司 | Thermoelectric power generation device for collecting heat and converting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4291540A (en) * | 1978-10-23 | 1981-09-29 | Carrier Corporation | Power generation unit |
| IL101002A (en) * | 1991-02-20 | 2001-01-28 | Ormat Turbines 1965 Ltd | Method of and means for using a two phase fluid for generating power in a rankine cycle power plant |
| CN209431579U (en) * | 2018-07-26 | 2019-09-24 | 孙同成 | Utilize the air-conditioning device of shallow well geothermal energy thermo-electric generation |
| CN209761640U (en) * | 2019-03-11 | 2019-12-10 | 中国石油化工集团公司 | Hot dry rock power generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112271957A (en) * | 2020-10-30 | 2021-01-26 | 重庆星科裕信息科技有限公司 | Thermoelectric power generation device for collecting heat and converting |
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