CN116678128A - Photo-thermal energy supply system - Google Patents
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- CN116678128A CN116678128A CN202310704083.1A CN202310704083A CN116678128A CN 116678128 A CN116678128 A CN 116678128A CN 202310704083 A CN202310704083 A CN 202310704083A CN 116678128 A CN116678128 A CN 116678128A
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- 238000004146 energy storage Methods 0.000 claims abstract description 51
- 238000010248 power generation Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 338
- 238000000605 extraction Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000008398 formation water Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The invention provides a photo-thermal energy supply system which comprises a solar heat collection module, a geothermal energy storage module, a heat exchange module and a power generation module, wherein the solar heat collection module is connected with the geothermal energy storage module; the heat energy output end of the solar heat collection module is connected with the geothermal energy storage module, the heat exchange module comprises a first pipeline and a second pipeline which are separated from each other, the heat energy output end of the geothermal energy storage module is connected with the input end of the first pipeline, the output end of the first pipeline is connected with the input end of the solar heat collection module, the input end of the second pipeline is connected with the heat energy output end of the power generation module, and the output end of the second pipeline is connected with the heat energy input end of the power generation module. According to the photo-thermal energy supply system provided by the invention, solar energy is collected through the solar heat collection assembly and converted into heat energy, the heat energy is fully introduced into the geothermal energy storage module, heat energy generated by the solar energy is balanced and stored in the geothermal energy storage module, and the coupled heat energy and the geothermal energy jointly generate electricity, so that the power generation efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of comprehensive application of renewable energy sources, and particularly relates to a photo-thermal energy supply system.
Background
Solar energy is the cleanest energy source with the greatest development and utilization potential worldwide, is inexhaustible, has very high photo-thermal conversion efficiency for solar heat utilization, is far greater than photovoltaic power generation efficiency, and has good exploitation prospect.
However, due to the limitation of natural conditions such as day and night, seasons, geographical latitude and altitude, and the influence of random factors such as sunny, cloudy and rainy, solar irradiance reaching a certain ground is discontinuous and extremely unstable, difficulty is increased to large-scale application of solar energy, unstable solar energy heating is caused, fluctuation is caused, electricity is directly generated by utilizing solar energy to be transmitted into a power grid, the power grid is unstable, even the power grid fails to be damaged, and urban electricity utilization is influenced.
Disclosure of Invention
The embodiment of the invention provides a photo-thermal energy supply system, which aims to solve the technical problems that solar energy is unstable in heat supply and cannot be directly used and the use risk is high in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the photo-thermal energy supply system comprises a solar heat collection module, a geothermal energy storage module, a heat exchange module and a power generation module;
the heat energy output end of the solar heat collection module is connected with the geothermal energy storage module, the heat exchange module is a heat exchanger, the heat exchange module comprises a first pipeline and a second pipeline which are separated from each other, the heat energy output end of the geothermal energy storage module is connected with the input end of the first pipeline, the output end of the first pipeline is connected with the input end of the solar heat collection module, the input end of the second pipeline is connected with the heat energy output end of the power generation module, and the output end of the second pipeline is connected with the heat energy input end of the power generation module.
In one possible implementation manner, the solar heat collection module comprises a heat collector and a first water storage tank group which are sequentially communicated along the water flow direction, a water outlet end of the first water storage tank group is communicated with a water inlet end of the geothermal energy storage module, and a flow valve is arranged between the first water storage tank group and the geothermal energy storage module.
In one possible implementation manner, a temperature control device is arranged on the heat collector, and the temperature control device is used for controlling the drainage temperature of the heat collector.
In one possible implementation manner, the geothermal energy storage module comprises a geothermal reservoir, a heat exchange well and a heat supply well are arranged on the geothermal reservoir, a water inlet end of the heat exchange well is connected with a water outlet end of the first water storage tank set, and a water outlet end of the heat supply well is connected with an input end of the first pipeline.
In one possible implementation manner, a water suction pump and a first water purifying processor are sequentially connected between the water outlet of the heat supply well and the water inlet of the first pipeline along the water flow direction.
In one possible implementation manner, the water outlet end of the first water purifying processor is connected with the water inlet end of the second water storage tank set through the first pipeline, and the water outlet end of the second water storage tank set is communicated with the water inlet end of the heat collector;
a main valve is arranged at the water outlet end of the second water storage tank group, a main road is formed between the main valve and the second water storage tank group, and a first flow dividing valve is arranged between the main valve and the water inlet end of the heat collector;
a second water purifying processor is connected between the first flow dividing valve and the water inlet end of the heat collector, the water inlet end of the second water purifying processor is communicated with a water source, the water outlet end of the second water purifying processor is communicated with the water inlet end of the heat collector, and the water outlet end of the second water purifying processor is provided with a water supply valve;
a first condensing tank is arranged between the second water storage tank group and the first pipeline.
In one possible implementation manner, the water inlet end of the heat exchange well is also connected with a recharging branch, the water inlet of the recharging branch is connected with the water inlet end of the heat exchange well, the water outlet of the recharging branch is connected between the main valve and the first flow dividing valve, and the water outlet end of the recharging branch is provided with a second flow dividing valve;
and a water level detector is further arranged in the heat exchange well and is in communication connection with the second shunt valve.
In one possible implementation manner, the photo-thermal energy supply system further comprises a flow monitoring module, wherein the flow monitoring module comprises a first detector arranged between the first water storage tank group and the heat exchange well, a second detector arranged between the water suction pump and the first water purification processor and a processing module, and the processing module is respectively in communication connection with the first detector and the second detector.
In one possible implementation manner, the method for monitoring the flow by using the flow monitoring module is implemented based on the following steps:
s1, acquiring a preset injection temperature value T0 of the heat exchange well;
s2, acquiring an actual injection water temperature value T1 of the heat exchange well;
s3, acquiring a preset extraction water temperature value T2 of the heating well;
s4, acquiring an actual extraction water temperature value T3 of the heating well;
s5, comparing the T0 with the T1, and the T2 with the T3 respectively;
if the T0 is smaller than the T1 and the T2 is smaller than the T3, judging that the water injection temperature is too high, and the extraction water temperature is too high, so that the heat energy converted from solar energy is completely converted into geothermal energy;
if T0 is larger than T1 and T2 is larger than T3, judging that the water injection temperature is too low and the extraction water temperature is too low, and the heat energy converted from solar energy is not completely converted into geothermal energy.
In one possible implementation manner, the power generation module comprises a second condensation tank, a working medium pump, a flash evaporator set and a steam turbine which are sequentially connected in series along the water flow direction, wherein the output end of the steam turbine is connected with a generator, the second condensation tank is communicated with the working medium pump through a second pipeline, the water outlet end of the second condensation tank is communicated with the water inlet end of the second pipeline, and the water inlet end of the working medium pump is communicated with the water outlet end of the second pipeline;
the flash evaporator set comprises a first flash evaporator and a second flash evaporator, wherein the water inlet end of the first flash evaporator is connected with the water outlet end of the second pipeline, the water outlet end of the first flash evaporator is connected with the water inlet end of the steam turbine, the water inlet end of the second flash evaporator is connected with the water outlet end of the first flash evaporator, and the water outlet end of the second flash evaporator is connected with the water inlet end of the steam turbine.
Compared with the prior art, the solar energy is collected through the solar heat collection assembly and converted into heat energy, the heat energy is directly and completely introduced into the geothermal energy storage module and stored in the geothermal energy storage module, and unstable heat energy generated by the solar energy is balanced in the geothermal energy storage module, so that the energy supply of the solar energy is changed from an unstable state to a stable state, the failure damage probability of a power grid is reduced, and the safety risk is reduced; the coupled heat energy and geothermal energy jointly generate electricity, so that the working efficiency of the power generation module is improved, the heat energy converted by solar energy is stored in the geothermal energy storage module, and the utilization rate of the heat energy converted by solar energy is improved; the fluctuation solar energy heat does not influence the geothermal energy exploitation of the geothermal energy storage module, and the stable and normal operation of the electric energy entering the power grid is ensured; the heat energy of solar energy is introduced into the geothermal energy storage module, so that the heat energy in the geothermal energy storage module is increased, and the mining life of the geothermal energy storage module is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of a photo-thermal energy supply system according to an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1;
fig. 3 is a schematic structural diagram of a heat exchange module according to an embodiment of the present invention.
Reference numerals illustrate:
1. a solar heat collection module; 11. a heat collector; 12. a first water tank set; 13. a flow valve;
2. a geothermal energy storage module; 21. geothermal reservoirs; 22. an energy storage well group; 221. a heat exchange well; 222. a heat supply well; 23. a water pump; 24. a first water purifying processor; 25. the second water storage tank group; 26. a first condensing tank; 27. a main valve; 28. a first diverter valve; 29. a water level detector;
3. a power generation module; 31. a second condensing tank; 32. a working medium pump; 33. a flash evaporator set; 331. a first flash; 332. a second flash evaporator; 34. a steam turbine; 35. a generator;
4. a heat exchange module; 41. a first pipeline; 42. a second pipeline;
5. a water supply branch; 51. a second water purifying processor; 52. a water supply valve;
6. recharging the branch; 61. a second shunt valve;
7. a flow monitoring module; 71. a first detector; 72. a second detector;
8. and (3) a power grid.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," "tail," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. Furthermore, the meaning of "a plurality of", "a number" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, a description will be given of a photo-thermal energy supply system according to the present invention. The solar energy heat collection module 1, the geothermal energy storage module 2, the heat exchange module 4 and the power generation module 3 are included; the solar heat collection module heat energy output end is connected with the geothermal energy storage module 2, the heat exchange module 4 is a heat exchanger, the heat exchange module 4 comprises a first pipeline 41 and a second pipeline 42 which are separated from each other, the heat energy output end of the geothermal energy storage module 2 is connected with the input end of the first pipeline 41, the output end of the first pipeline 41 is connected with the input end of the solar heat collection module 1, the input end of the second pipeline 42 is connected with the heat energy output end of the power generation module 3, and the output end of the second pipeline 42 is connected with the heat energy input end of the power generation module 3.
The invention has the working principle that unstable heat energy generated by solar energy is introduced into a geothermal energy storage module 2, heat exchange is carried out between the unstable heat energy and the energy in the geothermal energy storage module 2 until the balance is achieved, the solar energy is stored into the geothermal energy storage module 2, the heat with volatility generated by the solar energy is converted into stable geothermal energy and is coupled with the geothermal energy of the geothermal energy storage module 2, hot water with the geothermal energy and the heat energy enters a heat exchange module 4 through a first pipeline 41, flowing working media in a power generation module enter the heat exchange module 4 through a second pipeline 42, the flowing working media exchange the energy with hot water, and the coupled geothermal energy and the heat energy are supplied into the flowing working media for power generation and use. Fundamentally solves the characteristics that the solar energy generated heat has volatility under the influence of seasons, spaces and climate factors, and the solar energy utilization efficiency is low.
In particular, the first pipeline 41 is in communication with the hot water output end of the geothermal energy storage module 2 to convert geothermal energy into the power generation module 3, so as to generate power by the power generation module 3.
Compared with the prior art, the photo-thermal energy supply system provided by the embodiment is characterized in that solar energy is collected through the solar heat collection component and converted into heat energy, the heat energy is directly and completely introduced into the geothermal energy storage module 2 and stored in the geothermal energy storage module 2, and unstable heat energy generated by the solar energy is balanced in the geothermal energy storage module 2, so that the energy supply of the solar energy is changed from an unstable state to a stable state, the failure damage probability of a power grid is reduced, and the safety risk is reduced; the coupled heat energy and geothermal energy jointly generate power, so that the working efficiency of the power generation module 3 is improved; the heat energy converted by solar energy is stored in the geothermal energy storage module 2, so that the utilization rate of the heat energy converted by solar energy is improved; the fluctuation solar energy heat does not influence the geothermal energy exploitation of the geothermal energy storage module 2, and the stable and normal operation of the electric energy entering the power grid 8 is ensured; the heat energy of solar energy is introduced into the geothermal energy storage module 2, so that the heat energy in the geothermal energy storage module 2 is increased, and the exploitation life of the geothermal energy storage module 2 is prolonged.
In some embodiments, referring to fig. 1, the solar heat collecting module 1 includes a heat collector 11 and a first water storage tank set 12 sequentially communicated along a water flow direction, a water outlet end of the first water storage tank set 12 is communicated with a water inlet end of the geothermal energy storage module 2, and a flow valve 13 is arranged between the first water storage tank set 12 and the geothermal energy storage module 2.
It should be noted that the water outlet end of the first water storage tank set 12 forms a heat energy output end of the solar heat collecting module 1.
In specific implementation, the first water storage tank set 12 includes a plurality of water storage tanks connected in parallel, and the water outlet ends of the plurality of water storage tanks connected in parallel are respectively communicated with a water outlet pipeline, and the water outlet pipeline is provided with a flow valve 13 and extends into the geothermal energy storage module 2.
It should be noted that, the water storage tank adopted by the first water storage tank set 12 is a heat preservation tank, so as to reduce heat loss.
The solar heat collection module 1 provided by the embodiment is simple to assemble, the heat collector 11 heats circulating water flowing through the heat collector 11, solar energy is converted into heat energy in the circulating water, the water enters the first water storage tank set 12 for storage, the storage of the heat energy is realized, the flow valve 13 controls the water outlet flow of the first water storage tank set 12, and then the flow of the water entering the geothermal energy storage module 2 is controlled, so that the control of the water is realized.
In specific implementation, the solar heat collector is adopted as the heat collector 11, so that the heat collection function efficiency is high, the heat collection device can be paved in parallel on a paving site, and the conversion efficiency of solar energy is ensured. Circulating water in the plurality of parallel solar collectors flows into the first water storage tank group 12.
In some embodiments, referring to fig. 1, a temperature control device (not shown) is disposed on the heat collector 11, and the temperature control device is used to control the drainage temperature of the heat collector 11. The temperature control device can sense illumination intensity, when the illumination intensity is high, the flowing speed of circulating water in the heat collector 11 is accelerated, heat energy converted by solar energy is quickly taken away by the water, the transfer efficiency of the heat energy is improved, and the utilization rate of the solar energy is further improved; when the illumination intensity is low, the flow speed of the circulating water in the heat collector 11 is reduced, the circulating water can fully absorb the heat converted by the heat collector 11, the energy consumption of the heat collector 11 is further reduced, and the use cost is saved.
In some embodiments, referring to fig. 1, the geothermal energy storage module 2 includes a geothermal reservoir 21, where a heat exchanging well 221 and a heating well 222 are disposed on the geothermal reservoir 21, a water inlet of the heat exchanging well 221 is connected to a water outlet of the first water storage tank set 12, and a water outlet of the heating well 222 is connected to an input of the first pipeline 41.
It should be noted that, the heat exchanging well 221 and the heat supplying well 222 form a storage well group 22, the bottoms of the heat exchanging well 221 and the heat supplying well 222 share a geothermal water layer, and are all communicated with the geothermal water layer, and the water levels of the heat exchanging well 221 and the heat supplying well 222 are equal according to the principle of communicating vessels.
It should be noted that the water outlet end of the heat supply well 222 forms the heat energy output end of the geothermal energy storage module 2.
The geothermal energy storage module 2 provided in this embodiment has a simple structure, and the circulating water carrying heat energy flowing out from the first water storage tank set 12 is led into the heat exchange well 221, so that the circulating water is led into the geothermal reservoir 21 underground from the ground, thereby reducing heat loss and improving the utilization rate of heat energy. The circulating water carrying the heat energy exchanges heat in the heat exchange well 221 to achieve heat balance, so as to supplement the heat energy converted by the solar energy into the geothermal reservoir 21 and convert the heat energy with volatility into stable geothermal energy.
In specific implementation, the geothermal reservoir 21 is divided into a shallow layer, a middle layer and a deep layer according to the depth, the bottom of the heat exchange well 221 extends into the deep layer, so that the lost heat energy is supplemented to the shallow layer and the middle layer in the process of entering the bottom of the heat exchange well 221, the maximum utilization rate of the heat energy is realized, and the service life of the geothermal reservoir 21 is prolonged.
In some embodiments, referring to fig. 1, a water pump 23 and a first water purifier 24 are sequentially connected between the water outlet of the heating well 222 and the water inlet of the first pipeline 41 in the water flow direction. The water pump 23 is used for extracting hot water with geothermal energy from the geothermal reservoir 21, and the first water purifier 24 is used for filtering the extracted hot water to avoid impurities affecting the flow of the hot water.
In some embodiments, referring to fig. 1, the water outlet end of the first water purifying processor 24 is connected to the water inlet end of the second water storage tank group 25, and the water outlet end of the second water storage tank group 25 is communicated with the water inlet end of the heat collector 11; the water outlet end of the second water storage tank group 25 is provided with a main valve 27, a main road is formed between the main valve 27 and the second water storage tank group 25, and a first flow dividing valve 28 is arranged between the main valve 27 and the water inlet end of the heat collector 11; a second water purifying processor 51 is connected between the first flow dividing valve 28 and the water inlet end of the heat collector 11, the water inlet end of the second water purifying processor 51 is communicated with a water source, the water outlet end of the second water purifying processor 51 is communicated with the water inlet end of the heat collector 11, and the water outlet end of the second water purifying processor 51 is provided with a water supply valve 52; a first condensation tank 26 is arranged between the second water storage tank group 25 and the first pipeline 41.
It should be noted that the second water storage tank set 25 includes a plurality of water storage tanks connected in parallel, and water outlet ends of the plurality of water storage tanks connected in parallel are respectively connected to a same water passing pipeline, and a main valve 27 is disposed on the water passing pipeline.
The main line is connected to the water supply line 5, and the second water purifying process 51 is provided on the water supply line 5.
The first water purifying processor 24, the first condensing tank 26, the second water storage tank group 25, the heat collector 11, the first water storage tank group 12, the heat exchanging well 221 and the heat supplying well 222 cooperate to form a circulating water path. The water absorbs the heat energy converted by solar energy from the heat collector 11 and passes the heat energy into the heat exchange well 221, so that the heat energy converted by solar energy is converted into geothermal energy, the geothermal energy carried by the water flows out from the heat supply well 222, flows into the first condensation tank 26 for cooling after the geothermal energy is consumed, and finally flows into the heat collector 11 again from the first condensation tank 26, so that the circulation of the water is realized.
In this embodiment, the circulation water path can be realized converting solar energy heat into heat energy, then converting the heat energy into geothermal energy, and the circulating water can be reused, so that the use cost of the circulating water can be reduced while the heat energy of solar energy is balanced. The main valve 27 can control the flow rate of the circulating water into the heat collector 11, and the first diverting valve 28 can finely adjust the flow rate of the circulating water into the heat collector 11. The second water purifier 51 can filter the external water, prevent the external water from being mixed with the water in the circulating waterway, and prevent impurities from affecting the flow of the water, and the water supply branch 5 can supplement the total amount of the circulating water, so that the normal operation of the circulating system is ensured.
In some embodiments, to ensure proper operation of the heat collector 11, a maximum water level limit and a minimum water level limit are provided within the heat collector 11, and a water level sensor is provided within the heat collector 11, the water level sensor being in communication with the first diverter valve 28. The water level sensor is capable of detecting whether the water level in the collector 11 exceeds a water level limit, and when the water in the collector 11 exceeds a maximum water level limit, the first diverter valve 28 reduces the flow rate of the circulating water to reduce the water in the collector 11 below the maximum water level limit. When the water in the heat collector 11 is lower than the minimum water level limit, the first diverter valve 28 increases the flow of the circulating water, so that the water in the heat collector 11 is raised below the minimum water level limit, the heat absorption efficiency of the water is ensured, and the transfer efficiency of solar heat is further ensured.
In some embodiments, referring to fig. 1, the water inlet end of the heat exchange well 221 is further connected with a recharging branch 6, the recharging branch 6 is communicated with the main road, the water inlet of the recharging branch 6 is connected with the water inlet end of the heat exchange well 221, the water outlet of the recharging branch 6 is connected between the main valve 27 and the first diverter valve 28, and the water outlet end of the recharging branch 6 is provided with a second diverter valve 61; a water level detector 29 is also provided in the heat exchanging well 221, and the water level detector 29 is in communication with the second diverter valve 61. The water level detector 29 monitors the water level in the geothermal reservoir 21, and when the water level in the geothermal reservoir 21 is too high, the second shunt valve 61 increases the flow input, and the flow valve 13 decreases the flow output to decrease the water level in the geothermal reservoir 21; when the geothermal reservoir 21 is at too low a water level, the second diverter valve 61 reduces the flow input and correspondingly adjusts the flow valve 13 to increase the water flow output to raise the water level of the geothermal reservoir 21. The recharging branch 6 can change the water level in the geothermal reservoir 21, so that the water level of the stratum is ensured to be normal.
It should be noted that, the water inlet end of the heat exchange well 221 has both a water inlet and a water outlet, the water inlet is connected to the water outlet end of the first water storage tank set 12, and the water outlet is connected to the water inlet of the recharging branch 6.
It will be readily appreciated that during adjustment of the second diverter valve 61, the first diverter valve 28 is also adjusted appropriately.
The specific recharging mode is as follows:
when the water level detector 29 shows that the geothermal reservoir 21 is in a descending trend, the passing flow of the first diverter valve 28 can be increased, the recharging flow of the second diverter valve 61 can be reduced, the flow valve 13 can be increased when necessary, the flow rate of water can be increased by the flow valve 13, the injection water amount can be increased, the formation water level can be ensured to reach the normal water level, the extraction power of the water suction pump 23 can be reduced, the extraction amount of geothermal water can be reduced, and several devices can be used in a coordinated manner, so that the formation water level can be ensured to be normal.
When the water level detector 29 shows that the water level of the geothermal reservoir 21 is in the ascending trend, the passing flow of the first diverter valve 28 can be reduced, the recharging flow of the second diverter valve 61 can be increased, if necessary, the flow valve 13 is reduced, the injected water flow can be reduced after the flow valve 13 is reduced, the stratum water level can be ensured to reach the normal water level, the extraction power of the water pump 23 can be increased, the extraction amount of geothermal water can be increased, and the first diverter valve 28, the second diverter valve 61, the flow valve 13 and the main valve 27 are used in a coordinated manner, so that the stratum water level can be ensured to be normal.
In some embodiments, referring to fig. 2, the photothermal power system further comprises a flow monitoring module 7, the flow monitoring module 7 comprising a first detector 71 disposed between the first water tank set 12 and the heat exchanging well 221, a second detector 72 disposed between the water pump 23 and the first water purifier 24, and a processing module in communication with the first detector 71 and the second detector 72, respectively. The first detector 71 can monitor the water injection temperature of the heat exchanging well 221, the second detector 72 can detect the extraction water temperature of the heat supplying well 222, and the first detector 71 and the second detector 72 are matched, so that unstable heat energy converted by solar energy can be stabilized in the geothermal reservoir 21, and the unstable heat energy extracted is avoided.
In particular, the first detector 71 is communicatively connected to the flow valve 13 and the second detector 72 is communicatively connected to the suction pump 23.
In some embodiments, the method of flow monitoring with the flow monitoring module 7 is implemented based on the following steps: s1, acquiring a preset injection temperature value T0 of a heat exchange well 221; s2, acquiring an actual injection water temperature value T1 of the heat exchange well 221; s3, acquiring a preset extraction water temperature value T2 of the heat supply well 222; s4, acquiring an actual extraction water temperature value T3 of the heat supply well 222; s5, comparing T0 with T1, and T2 with T3 respectively; if T0 is smaller than T1 and T2 is smaller than T3, judging that the water injection temperature is too high, and the extraction water temperature is too high, so that the heat energy converted from solar energy is completely converted into geothermal energy; if T0 is larger than T1 and T2 is larger than T3, the water injection temperature is judged to be too low, the extraction water temperature is judged to be too low, and the heat energy converted from solar energy is not completely converted into geothermal energy.
The detection step provided by the embodiment is simple, staff judgment is not needed, the water injection flow can be automatically adjusted according to the water injection temperature, whether the solar heat energy is completely converted into geothermal energy is judged according to the water injection quantity and the water extraction quantity, and the energy balance of the whole system is ensured.
In the implementation, if T0 is greater than T1 and T2 is greater than T3, the heat energy converted from solar energy is completely converted into geothermal energy without operation; if T0 is less than T1 and T2 is less than T3, the heat energy converted by solar energy is not completely converted into geothermal energy, so that the extraction efficiency of the water pump 23 can be reduced, the water outlet temperature of the heat collector 11 is increased, the water outlet flow of the flow valve 13 is increased, the transfer of solar energy heat is accelerated, the water quantity injected into the geothermal reservoir 21 is accelerated, the residence time of the heat converted by solar energy in the geothermal reservoir 2 is prolonged, the total amount of stable solar energy heat energy is increased, and the utilization rate of solar energy is accelerated.
In some embodiments, referring to fig. 1, the power generation module 3 includes a second condensation tank 31, a working medium pump 32, a flash evaporator group 33 and a steam turbine 34 sequentially connected in series along the water flow direction, the output end of the steam turbine 34 is connected with a generator 35, the second condensation tank 31 is communicated with the working medium pump 32 through a second pipeline 42, the water outlet end of the second condensation tank 31 is communicated with the water inlet end of the second pipeline 42, and the water inlet end of the working medium pump 32 is communicated with the water outlet end of the second pipeline 42; the flash evaporator set 33 includes a first flash evaporator 331 and a second flash evaporator 332, where the water inlet end of the first flash evaporator 331 is connected to the water outlet end of the second pipeline 42, the water outlet end of the first flash evaporator 331 is connected to the water inlet end of the steam turbine 34, the water inlet end of the second flash evaporator 332 is connected to the water outlet end of the first flash evaporator 331, and the water outlet end of the second flash evaporator 332 is connected to the water inlet end of the steam turbine 34.
The water flow direction refers to the flow direction of the flowing working medium, and water with preferable wages flows.
In the flash evaporator set 33 provided in this embodiment, the first flash evaporator 331 and the second flash evaporator 332 are used in cooperation, the first flash evaporator 331 performs a first-stage depressurization flash evaporation on the organic dry matter, so as to generate a first-stage depressurization steam and a small amount of unreacted organic dry matter, the first-stage flash steam enters the steam turbine 34 to perform energy conversion first, the unreacted organic dry matter enters the second flash evaporator 332, and the first-stage flash evaporation is performed to evaporate most of the organic dry matter. The second flash evaporator 332 performs a second-stage depressurization flash evaporation on a small amount of unreacted organic dry matters to generate a second-stage flash steam and a little unreacted organic dry matters, the second-stage flash steam enters the steam turbine 34 to perform energy conversion, and the little unreacted organic dry matters enter the second condensing tank 31, so that the second-stage flash evaporation adopts a higher pressure difference, the flash evaporation efficiency is ensured, and the unnecessary energy consumption is reduced.
The working medium pump 32 carries out pressure boosting treatment on the organic working medium, so that the pressure is the same when the organic working medium is supplied to the heat exchange module 4, the pressure stability of the heat exchange module 4 is met, the heat exchange efficiency is ensured, and the heat exchange module 4 is prevented from being damaged due to pressure difference.
The steam turbine 34 converts energy contained in the primary flash steam and the secondary flash steam into mechanical work, and inputs the energy-converted steam and organic working medium into the second condensing tank 31 to perform condensation treatment.
In particular, the steam turbine 34 is a condensing steam turbine.
The embodiment provides the power generation module 3, the power generation is stable, organic working medium flows through the second pipeline 42, is heated by geothermal energy in the first pipeline 41 in the second pipeline 42, and the heated organic working medium enters the flash evaporator set 33, and does work in the steam turbine 34 through the flash evaporator set 33, so that the steam turbine 34 converts the thermal energy into mechanical work, the steam turbine 34 is connected with the generator 35, the generator 35 is connected with the power grid 8, the power generation module 3 generates power and notifies the power grid, the heat energy from the heat exchange module 4 is stable in exchange, the generated electric energy is stable, and the normal operation of the power grid 8 is protected.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The photo-thermal energy supply system is characterized by comprising a solar heat collection module, a geothermal energy storage module, a heat exchange module and a power generation module;
the heat energy output end of the solar heat collection module is connected with the geothermal energy storage module, the heat exchange module is a heat exchanger, the heat exchange module comprises a first pipeline and a second pipeline which are separated from each other, the heat energy output end of the geothermal energy storage module is connected with the input end of the first pipeline, the output end of the first pipeline is connected with the input end of the solar heat collection module, the input end of the second pipeline is connected with the heat energy output end of the power generation module, and the output end of the second pipeline is connected with the heat energy input end of the power generation module.
2. The photothermal energy supply system of claim 1, wherein the solar heat collection module comprises a heat collector and a first water storage tank group which are sequentially communicated along a water flow direction, a water outlet end of the first water storage tank group is communicated with a water inlet end of the geothermal energy storage module, and a flow valve is arranged between the first water storage tank group and the geothermal energy storage module.
3. The photothermal energy supply system of claim 2, wherein a temperature control device is provided on the heat collector, the temperature control device being configured to control a temperature of a drain water of the heat collector.
4. The photothermal energy supply system of claim 2, wherein the geothermal energy storage module comprises a geothermal reservoir, wherein a heat exchange well and a heating well are arranged on the geothermal reservoir, a water inlet end of the heat exchange well is connected with a water outlet end of the first water storage tank set, and a water outlet end of the heating well is connected with an input end of the first pipeline.
5. The photothermal energy supply system of claim 4, wherein a water pump and a first water purifying processor are further connected in sequence along the water flow direction between the water outlet of the heat supply well and the water inlet of the first pipeline.
6. The photothermal energy supply system of claim 4, wherein a water outlet end of the first water purifying processor is connected with a water inlet end of a second water storage tank set through the first pipeline, and a water outlet end of the second water storage tank set is communicated with a water inlet end of the heat collector;
a main valve is arranged at the water outlet end of the second water storage tank group, a main road is formed between the main valve and the second water storage tank group, and a first flow dividing valve is arranged between the main valve and the water inlet end of the heat collector;
a second water purifying processor is connected between the first flow dividing valve and the water inlet end of the heat collector, the water inlet end of the second water purifying processor is communicated with a water source, the water outlet end of the second water purifying processor is communicated with the water inlet end of the heat collector, and the water outlet end of the second water purifying processor is provided with a water supply valve;
a first condensing tank is arranged between the second water storage tank group and the first pipeline.
7. The photothermal energy supply system of claim 6, wherein a water inlet end of the heat exchange well is further connected with a recharging branch, a water inlet of the recharging branch is connected with a water inlet end of the heat exchange well, a water outlet of the recharging branch is connected between the main valve and the first flow dividing valve, and a water outlet end of the recharging branch is provided with a second flow dividing valve;
and a water level detector is further arranged in the heat exchange well and is in communication connection with the second shunt valve.
8. The photothermal energy supply system of claim 4, further comprising a flow monitoring module comprising a first detector disposed between the first water storage tank set and the heat exchange well, a second detector disposed between the suction pump and the first water purification processor, and a processing module in communication with the first detector and the second detector, respectively.
9. The photothermal energy supply system of claim 8, wherein the method for flow monitoring using the flow monitoring module is implemented based on the steps of:
s1, acquiring a preset injection temperature value T0 of the heat exchange well;
s2, acquiring an actual injection water temperature value T1 of the heat exchange well;
s3, acquiring a preset extraction water temperature value T2 of the heating well;
s4, acquiring an actual extraction water temperature value T3 of the heating well;
s5, comparing the T0 with the T1, and the T2 with the T3 respectively;
if the T0 is smaller than the T1 and the T2 is smaller than the T3, judging that the water injection temperature is too high, and the extraction water temperature is too high, so that the heat energy converted from solar energy is completely converted into geothermal energy;
if T0 is larger than T1 and T2 is larger than T3, judging that the water injection temperature is too low and the extraction water temperature is too low, and the heat energy converted from solar energy is not completely converted into geothermal energy.
10. The photo-thermal energy supply system according to claim 1, wherein the power generation module comprises a second condensation tank, a working medium pump, a flash evaporator set and a steam turbine which are sequentially connected in series along the water flow direction, the output end of the steam turbine is connected with a generator, the second condensation tank is communicated with the working medium pump through a second pipeline, the water outlet end of the second condensation tank is communicated with the water inlet end of the second pipeline, and the water inlet end of the working medium pump is communicated with the water outlet end of the second pipeline;
the flash evaporator set comprises a first flash evaporator and a second flash evaporator, wherein the water inlet end of the first flash evaporator is connected with the water outlet end of the second pipeline, the water outlet end of the first flash evaporator is connected with the water inlet end of the steam turbine, the water inlet end of the second flash evaporator is connected with the water outlet end of the first flash evaporator, and the water outlet end of the second flash evaporator is connected with the water inlet end of the steam turbine.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081763A (en) * | 2000-09-04 | 2002-03-22 | Sekisui Chem Co Ltd | Solar heat and underground heat utilizing system |
| FR2922634A1 (en) * | 2007-10-18 | 2009-04-24 | Saunier Associes Soc Par Actio | Heat transfer installation's performance optimizing method for e.g. heating room of dwelling, involves recharging ground with heat energy outside operating period in heating mode using heat transfer carried out by exchanger from heat source |
| CN104603570A (en) * | 2012-06-28 | 2015-05-06 | 耐斯特公司 | Plant for energy production |
| CN104864460A (en) * | 2015-04-29 | 2015-08-26 | 大连理工大学 | Rural active solar heat storage floor system |
| US20160201948A1 (en) * | 2013-07-31 | 2016-07-14 | Sasie Limited | Energy system |
| CN107218094A (en) * | 2017-04-21 | 2017-09-29 | 昆明理工大学 | A kind of multiple pressure flashes the device of organic Rankine bottoming cycle cogeneration |
| CN114704343A (en) * | 2022-03-28 | 2022-07-05 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Waste mine geothermal-photothermal coupling power generation system and power generation method thereof |
| CN115839517A (en) * | 2022-12-09 | 2023-03-24 | 国网陕西省电力有限公司电力科学研究院 | Photovoltaic photo-thermal and geothermal coupling power generation and energy supply system |
-
2023
- 2023-06-14 CN CN202310704083.1A patent/CN116678128B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081763A (en) * | 2000-09-04 | 2002-03-22 | Sekisui Chem Co Ltd | Solar heat and underground heat utilizing system |
| FR2922634A1 (en) * | 2007-10-18 | 2009-04-24 | Saunier Associes Soc Par Actio | Heat transfer installation's performance optimizing method for e.g. heating room of dwelling, involves recharging ground with heat energy outside operating period in heating mode using heat transfer carried out by exchanger from heat source |
| CN104603570A (en) * | 2012-06-28 | 2015-05-06 | 耐斯特公司 | Plant for energy production |
| US20160201948A1 (en) * | 2013-07-31 | 2016-07-14 | Sasie Limited | Energy system |
| CN104864460A (en) * | 2015-04-29 | 2015-08-26 | 大连理工大学 | Rural active solar heat storage floor system |
| CN107218094A (en) * | 2017-04-21 | 2017-09-29 | 昆明理工大学 | A kind of multiple pressure flashes the device of organic Rankine bottoming cycle cogeneration |
| CN114704343A (en) * | 2022-03-28 | 2022-07-05 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Waste mine geothermal-photothermal coupling power generation system and power generation method thereof |
| CN115839517A (en) * | 2022-12-09 | 2023-03-24 | 国网陕西省电力有限公司电力科学研究院 | Photovoltaic photo-thermal and geothermal coupling power generation and energy supply system |
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