WO2025007750A1 - 一种模块化地热发电系统 - Google Patents

一种模块化地热发电系统 Download PDF

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Publication number
WO2025007750A1
WO2025007750A1 PCT/CN2024/100166 CN2024100166W WO2025007750A1 WO 2025007750 A1 WO2025007750 A1 WO 2025007750A1 CN 2024100166 W CN2024100166 W CN 2024100166W WO 2025007750 A1 WO2025007750 A1 WO 2025007750A1
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Prior art keywords
power generation
cold
radiator
hot water
pipe
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Ceased
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PCT/CN2024/100166
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English (en)
French (fr)
Inventor
龙西亭
谢和平
孙立成
皋天一
夏恩通
李书恒
王俊
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Shenzhen University
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Shenzhen University
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Publication of WO2025007750A1 publication Critical patent/WO2025007750A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/0316—Assemblies of conduits in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/17—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the structure or configuration of the cell or thermocouple forming the device
    • 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

Definitions

  • the present invention relates to the technical field of geothermal power generation, and in particular to a modular geothermal power generation system.
  • Thermoelectric materials are a type of functional material that can achieve direct conversion of heat to electricity.
  • the carriers inside them generate electromotive force under the action of temperature difference.
  • the Seebeck effect causes the charge distribution inside the thermoelectric material to change, resulting in a stable potential difference, thereby generating current.
  • the temperature difference power generation technology of thermoelectric materials breaks through the traditional energy conversion path of thermal energy-mechanical energy-electric energy, avoids the intermediate process of mechanical work, and realizes direct conversion of heat to electricity. It has unique advantages such as simple operation, no mechanical energy loss, stable and reliable, and green and clean.
  • thermovoltaic generator which has verified the feasibility of applying temperature difference power generation technology to medium and low temperature geothermal power generation.
  • the installed capacity of the equipment is limited.
  • the integrated design makes the equipment bulky and lacks good scalability. It is also inconvenient for subsequent operation and maintenance, making it difficult to achieve large-scale engineering applications.
  • the purpose of the present invention is to provide a modular geothermal power generation system to address the deficiencies of the prior art.
  • the modular geothermal power generation system has good scalability and is convenient for assembly and maintenance.
  • a modular geothermal power generation system comprising: a plurality of groups of thermovoltaic power generation modules;
  • the thermovoltaic power generation module includes at least two radiators, which are arranged adjacent to each other and spaced apart.
  • the two adjacent radiators are respectively: a hot radiator and a cold radiator.
  • a plurality of thermoelectric modules for thermovoltaic power generation are arranged between the two radiators.
  • the hot water supply system is connected to the hot radiator, and the cold water supply system is connected to the cold radiator.
  • thermovoltaic power generation modules form a power generation group
  • the radiator includes a heat dissipation shell
  • the two ends of the heat dissipation shell are respectively provided with a water inlet interface and a water outlet interface
  • the hot water supply system and the cold water supply system are respectively arranged on the left and right sides of the thermovoltaic power generation module
  • the hot water supply system includes a hot water input pipe and a hot water output pipe
  • the cold water supply system includes a cold water input pipe and a cold water output pipe
  • the hot radiator and the cold radiator are connected correspondingly between two adjacent thermal photovoltaic power generation modules in the power generation group through pipelines, and the hot radiator and the cold radiator of each thermal photovoltaic power generation module are connected in series accordingly;
  • the thermal photovoltaic power generation modules located on both sides of the power generation group are the main thermal photovoltaic power generation module and the auxiliary thermal photovoltaic power generation module, the hot radiator water inlet interface of the main thermal photovoltaic power generation module is connected to the hot water input pipe through a pipeline, and the cold radiator water inlet interface of the auxiliary thermal photovoltaic power generation module is connected to the cold water input pipe through a pipeline;
  • the cold radiator water outlet interface of the main thermal photovoltaic power generation module is connected to the cold water delivery pipe through a pipeline, and the hot radiator water outlet interface of the auxiliary thermal photovoltaic power generation module is connected to the hot water output pipe through a pipeline.
  • thermovoltaic power generation module includes 2K+1 radiators, K is a natural number; wherein K radiators are hot radiators; K+1 radiators are cold radiators, and the hot radiator is arranged between two adjacent cold radiators; and further includes a fixing structure for fixing the radiator, wherein the fixing structure has two clamping plates, The two clamping plates are fixedly connected via a connecting piece.
  • the heat dissipation shell includes a cover plate and a bottom shell
  • the bottom shell includes a bottom plate
  • a plurality of spaced convex ribs are provided in the middle of the bottom plate.
  • the convex ribs are arranged along the length direction of the radiator to divide the internal space of the radiator into a plurality of water flow grooves, and the water inlet interface and the water outlet interface are respectively arranged at the lower end of the left side and the upper end of the right side of the heat dissipation shell.
  • the left side plate and the right side plate of the bottom shell are both inclined; the distance between the left end surface of the ridge and the left side plate gradually increases from top to bottom, and the distance between the right end surface of the ridge and the right side plate gradually decreases from top to bottom.
  • the modular geothermal power generation system also includes a bracket for fixing the thermovoltaic power generation module;
  • the bracket includes a base plate, a support plate is provided in the middle of the base plate, and a plurality of load-bearing plates are respectively connected to the two side surfaces of the support plate at intervals, and the thermovoltaic power generation module is fixed to the load-bearing plate.
  • thermovoltaic power generation modules are a power generation group
  • the hot water input pipe and the hot water output pipe are located at the front end and the rear end of one side of the thermovoltaic power generation module
  • the cold water input pipe and the cold water output pipe are located at the front end and the rear end of the other side of the thermovoltaic power generation module.
  • the side of the hot water input pipe is connected to a plurality of transversely arranged hot water input branch pipes, the hot water input branch pipe is connected to the water inlet interface of the heat radiator through a pipe, the hot water output pipe is connected to a plurality of transversely arranged hot water output branch pipes, the hot water output branch pipe is connected to the water outlet interface of the heat radiator through a pipe; the hot water input branch pipe and the hot water output branch pipe are alternately arranged; the side of the cold water input pipe is connected to a plurality of transversely arranged cold water input branch pipes 42, the cold water input branch pipe 42 is connected to the water inlet interface of the cold radiator through a pipe, the cold water output pipe is connected to a plurality of transversely arranged cold water output branch pipes, the cold water output branch pipe is connected to the water outlet interface of the cold radiator through a pipe; the cold water input branch pipe 42 and the cold water output branch pipe are alternately arranged.
  • thermovoltaic power generation module also includes a box, a thermovoltaic power generation module, a cold water supply system, and a hot water supply system.
  • the bracket is arranged in the box body, and the outer side of the box body is provided with an interface connected with the cold water supply system and the hot water supply system.
  • control system is provided at the upper end of the box, and the control system is used to monitor the working status of the cold water supply system, the hot water supply system and the thermovoltaic power generation module.
  • the present invention arranges hot and cold ends of relatively arranged heat sinks and cold sink-shaped slots, and arranges thermoelectric modules therebetween, so that the overall structure is modularized, the number of uses can be adjusted according to demand, and maintenance and assembly are convenient.
  • FIG1 is a schematic structural diagram of this embodiment.
  • FIG. 2 is a schematic diagram of FIG. 1 without the housing and the control system.
  • FIG. 3 is a schematic diagram of FIG. 2 from another viewing angle.
  • FIG. 4 is a schematic diagram of a thermovoltaic power generation module.
  • FIG. 5 is an exploded schematic diagram of FIG. 4 .
  • FIG. 6 is a partial exploded schematic diagram of FIG. 3 with the thermovoltaic power generation module removed.
  • FIG. 7 is a schematic structural diagram of a radiator.
  • FIG. 8 is a schematic cross-sectional view of FIG. 7 .
  • FIG9 is a schematic diagram showing the cooperation between the power generation group, the thermovoltaic power generation module and the hot water supply system.
  • Reference numerals include: 1——control system; 2——box; 3——thermovoltaic power generation module; 4—cold water supply system; 5——hot water supply system; 6——bracket; 31——heat sink; 32—thermoelectric module; 33——heat dissipation housing; 34——heat sink; 36 —clamping plate; 37—connecting piece; 311——water outlet interface; 312——water inlet interface; 331——convex rib; 332——right side plate; 333——water flow channel; 41 - cold water output pipe; 42 - cold water input branch pipe; 43 - cold water output branch pipe; 44 - —Cold water inlet pipe; 51——hot water input branch pipe; 52——hot water output branch pipe; 53—hot water output pipe; 54——— —Hot water inlet pipe.
  • a modular geothermal power generation system comprises: a plurality of groups of thermovoltaic power generation modules 3;
  • the thermovoltaic power generation module 3 includes at least two radiators 31, which are arranged adjacent to each other at intervals.
  • the two adjacent radiators 31 are respectively: a hot radiator 31 and a cold radiator 31.
  • a plurality of thermoelectric modules 32 for thermovoltaic power generation are arranged between the two radiators 31.
  • the hot water supply system 5 is connected to the hot radiator 31, and the cold water supply system 4 is connected to the cold radiator 31.
  • thermovoltaic power generation module 3 When implementing this technical solution, by modularizing the thermovoltaic power generation module 3, this technical solution can set a corresponding number of thermovoltaic power generation modules 3 according to demand.
  • the thermoelectric modules 32 of each group of thermovoltaic power generation modules are connected to the power generation circuit through wires, and the generated electric energy is output to the outside through the power generation circuit.
  • the power generation circuit is an existing technology and is not the technical innovation point of the application, so it will not be repeated.
  • the hot water supply system 5 provides hot water to the heat sink 31, and the cold water supply system 4 Cold water is supplied to the cold radiator 31, and the two sides of the thermoelectric module 32 form a hot end and a cold end, and a potential difference is generated between the hot end and the cold end to form electric energy, which is output to the outside.
  • the modular design of the thermoelectric module 32 makes its application have better expansion performance and is also convenient for assembly and maintenance.
  • flexible heat sinks 34 are provided on both sides of the thermoelectric module, and the heat sinks 34 are abutted against the radiator.
  • thermovoltaic power generation modules 3 form a power generation group
  • the radiator 31 includes a heat dissipation shell 33
  • the two ends of the heat dissipation shell 33 are respectively provided with a water inlet interface 312 and a water outlet interface 311
  • the hot water supply system 5 and the cold water supply system 4 are respectively arranged on the left and right sides of the thermovoltaic power generation module 3
  • the hot water supply system 5 includes a hot water input pipe 54 and a hot water output pipe 53
  • the cold water supply system 4 includes a cold water input pipe 44 and a cold water output pipe 41;
  • thermovoltaic power generation modules 3 located on both sides of the power generation group are the main thermovoltaic power generation module 38 and the auxiliary thermovoltaic power generation module 39, and the two sides here refer to the two sides located on the outermost side; when the power generation group is distributed up and down, the two groups of thermovoltaic power generation modules 3 located on the lower and upper sides are the main thermovoltaic power generation modules 38 and the auxiliary thermovoltaic power generation modules 39; when the power generation group is horizontally set, the two groups of thermovoltaic power generation modules 3 located on the edge are the main thermovoltaic power generation modules 38 and the auxiliary thermovoltaic power generation modules 39.
  • the heat exchanger water inlet interface 311 of the main thermal power generation module 38 is connected to the hot water input pipe 54 through a pipeline, and the heat exchanger water outlet interface 312 of the auxiliary thermal power generation module 39 is connected to the hot water output pipe 53 through a pipeline; the cold heat exchanger water inlet interface 311 of the main thermal power generation module 38 is connected to the cold water input pipe 44 through a pipeline, and the cold heat exchanger water outlet interface 312 of the auxiliary thermal power generation module 39 is connected to the cold water output pipe 41 through a pipeline. See Figures 2, 3, and 11.
  • thermovoltaic power generation module 3 is directly connected to the cold water supply system 4 and the hot water supply system 5. Since the water flow is relatively fast, the amount of heat exchange is relatively small; resulting in a small temperature change between hot and cold water, and a low efficiency of thermovoltaic conversion; if the water flow reduces the flow rate, the temperature difference between the cold radiator 31 and the hot radiator 31 will become smaller, reducing the power of thermovoltaic conversion; if the radiator 31 is extended, the volume of the entire device will become larger; in order to balance the above problems well, the applicant has developed a series connection method, connecting at least two thermovoltaic power generation modules 3 in series through a pipeline, and the pipeline can be a flexible corrugated pipe, etc.
  • thermovoltaic power generation modules 3 are used in series, and the two thermovoltaic power generation modules 3 are arranged up and down.
  • the upper thermovoltaic power generation module 3 is the main thermovoltaic power generation module 3
  • the lower thermovoltaic power generation module 3 is the auxiliary thermovoltaic power generation module 3.
  • the water inlet interface 311 on the right side of the heat exchanger 31 of the main thermal photovoltaic power generation module 38 is connected to the hot water input pipe 54 through a straight pipe, and the water outlet interface 312 on the left side of the heat exchanger 31 of the main thermal photovoltaic power generation module 38 is connected to the water inlet interface 311 on the left side of the heat exchanger 31 of the auxiliary thermal photovoltaic power generation module 39 through a U-shaped pipe; the water outlet interface 312 on the right side of the heat exchanger of the auxiliary thermal photovoltaic power generation module 39 is connected to the hot water output pipe through a straight pipe to form a hot water circulation.
  • the water inlet interface 311 on the left side of the cold heat exchanger 31 of the main thermal photovoltaic power generation module 38 is connected to the cold water input pipe 44 through a straight pipe, and the water outlet interface 312 on the right side of the cold heat exchanger 31 of the main thermal photovoltaic power generation module 38 is connected to the water inlet interface 311 on the right side of the cold heat exchanger 31 of the auxiliary thermal photovoltaic power generation module 39 through a U-shaped pipe; the water outlet interface 312 on the left side of the cold heat exchanger 31 of the auxiliary thermal photovoltaic power generation module 39 is connected to the cold water output pipe 41 through a straight pipe to form a cold water circulation.
  • thermovoltaic power generation modules 3 When adjacent thermovoltaic power generation modules 3 are connected in series, the outlet of the heat radiator 31 of one thermovoltaic power generation module 3 and the inlet of the heat radiator 31 of another thermovoltaic power generation module 3 are located on the same side and connected by pipelines; the outlet of the cold radiator 31 of one thermovoltaic power generation module 3 and the inlet of the cold radiator 31 of another thermovoltaic power generation module 3 are located on the same side and connected by pipelines; The outlets of the cold radiator 31 of the thermovoltaic power generation module 3 are located on the same side and are connected by pipelines.
  • thermovoltaic power generation modules 3 when there are 2N+1 (such as 3) thermovoltaic power generation modules 3 connected in series, the cold water input pipe 44 and the cold water output pipe 41 are located on both sides of the thermovoltaic power generation module 3, and the hot water output pipe 53 and the hot water input pipe 54 are also located on both sides of the thermovoltaic power generation module 3. At this time, the hot water flows and the cold water flows in an S-shaped line.
  • thermovoltaic power generation module 3 the cold water flow path and the hot water flow path adopt two opposite routes, with hot water flowing from left to right and cold water flowing from right to left, or vice versa; this ensures that the relative temperature difference between the cold radiator 31 and the hot radiator 31 on both sides of the thermovoltaic power generation module 3 does not fluctuate much, and the working state of the thermoelectric module 32 in the thermovoltaic power generation module 3 remains basically consistent, which is beneficial to the collection of electrical energy.
  • thermovoltaic power generation module 3 includes 2K+1 radiators 31, K is a natural number; wherein K radiators 31 are hot radiators 31; K+1 radiators 31 are cold radiators 31, and the hot radiator 31 is arranged between two adjacent cold radiators 31; and also includes a fixing structure for fixing the radiator 31, the fixing structure having two clamping plates 36, and the two clamping plates 36 are fixedly connected by a connecting piece 37.
  • thermovoltaic power generation module is arranged between the cold radiator 31 and the hot radiator 31; if the outermost radiator 31 has a hot radiator 31, the hot radiator 31 will exchange heat with the outside and lose some heat; in order to maximize the use of heat, the cold radiator 31 is arranged at the outermost sides of both sides, and the hot radiator 31 is arranged in between.
  • K can be 1, 2, 3, 4, 5, etc.
  • the heat dissipation shell 33 includes a cover plate and a bottom shell, the bottom shell includes a bottom plate, and a plurality of spaced convex ribs 331 are provided in the middle of the bottom plate.
  • the convex ribs 331 are arranged along the length direction of the radiator 31, dividing the internal space of the radiator 31 into a plurality of water flow grooves 333, and the water inlet interface 312 and the water outlet interface 311 are respectively arranged at the lower end of the left side and the upper end of the right side of the heat dissipation shell 33.
  • the left side plate and the right side plate 332 of the bottom shell are both inclined; the distance between the left end surface of the ridge and the left side plate gradually increases from top to bottom, and the distance between the right end surface of the ridge and the right side plate 332 gradually decreases from top to bottom.
  • a convex rib 331 is arranged in the heat dissipation shell 33, and a plurality of water flow grooves 333 are formed; since the width of the radiator 31 is greater than the width of the interface, when cold water or hot water enters from the interface, if the radiator 31 is made into a regular rectangle, different flow rate layers will be formed inside the radiator 31, resulting in a temperature difference on the surface of the radiator 31, affecting the working efficiency of the thermovoltaic power generation module; the inventor has previously designed a similar radiator 31, by designing the end of the convex rib 331 to have different curvatures to adjust the flow rate of the balance water flow groove 333; but this brings difficulty to the production; in order to facilitate the production and to be able to balance With regard to the flow rate of each water flow trough 333, the technical solution sets the left plate and the right plate 332 of the bottom plate to an inclined shape with an inclination angle of 15-30 degrees.
  • the water pressure at the left end and the right end of the radiator 31 is adjusted, so that the pressure difference at the left end and the right end of all the water flow troughs 333 is equal or approximately equal, thereby making the water flow rate of the water flow trough 333 approximately equal, and further making the temperature of the radiator 31 consistent in the width direction and maintaining a linear temperature difference in the length direction.
  • the cold radiator 31 and the hot radiator 31 maintain an equal or approximately equal temperature difference in the length direction, so that the thermovoltaic power generation module can work stably.
  • the ribs 331 can also play a structural reinforcement effect on the heat exchanger.
  • the temperature of the heat exchanger in the length direction gradually rises or falls.
  • the heat exchanger is generally made of metal material, and its thermal expansion and contraction are different, which can easily cause large internal stress to form inside, causing deformation of the cover plate and the bottom shell, affecting the thermal contact with the thermoelectric module; after adding the ribs 331, the overall strength is improved, which can reduce or avoid deformation.
  • the modular geothermal power generation system further includes a device for fixing the geothermal power generation module.
  • the bracket 6 is provided to facilitate fixing the thermovoltaic power generation module 3 .
  • thermovoltaic power generation modules 3 are a power generation group
  • the hot water input pipe 54 and the hot water output pipe are located at the front end and the rear end of one side of the thermovoltaic power generation module 3
  • the cold water input pipe 44 and the cold water output pipe 41 are located at the front end and the rear end of the other side of the thermovoltaic power generation module 3.
  • the side of the hot water input pipe 54 is connected to a plurality of transversely arranged hot water input branch pipes 51, and the hot water input branch pipe 51 is connected to the water inlet interface 312 of the heat radiator 31 through a pipeline, and the hot water output pipe is connected to a plurality of transversely arranged hot water output branch pipes 52, and the hot water output branch pipes 53 are connected to the hot water output branch pipes 54.
  • the pipe 52 is connected to the water outlet interface 311 of the heat radiator 31 through a pipeline; the hot water input branch pipe 51 and the hot water output branch pipe 52 are arranged alternately; the side of the cold water input pipe 44 is connected to multiple transversely arranged cold water input branch pipes 42, the cold water input branch pipe 42 is connected to the water inlet interface 312 of the cold radiator through a pipeline, and the cold water output pipe 41 is connected to multiple transversely arranged cold water output branch pipes 43, and the cold water output branch pipe 43 is connected to the water outlet interface 311 of the cold radiator through a pipeline; the cold water input branch pipe 42 and the cold water output branch pipe 43 are arranged alternately.
  • thermovoltaic power generation modules 3 are combined into a power generation group, so that the cold water input pipe 44 and the cold water output pipe 41 are located on the same side, and the hot water input pipe 54 and the hot water output pipe are located on the same side; it is easy to manage; secondly, the cold water input branch pipe 42 and the cold water output branch pipe 43 are alternately arranged; the hot water input branch pipe 51 and the hot water output branch pipe are alternately arranged so that the space is reasonably utilized.
  • thermovoltaic power generation module 3 a cold water supply system 4 , a hot water supply system 5 and a bracket 6 are all arranged in the box body 2, and an interface connected to the cold water supply system 4 and the hot water supply system 5 is provided on the outside of the box body 2.
  • the present technical solution is provided with a box 2, and an interface is provided to connect with the cold water supply system 4 and the hot water supply system 5 to facilitate the introduction and outflow of hot water and cold water.
  • the hot water uses geothermal water, and the cold water can use river water.
  • a control system 1 is provided at the upper end of the box body 2 , and the control system 1 is used to monitor the working status of the cold water supply system 4 , the hot water supply system 5 and the thermovoltaic power generation module 3 .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photovoltaic Devices (AREA)

Abstract

本发明涉及地热发电技术领域，尤其涉及一种模块化地热发电系统。其包括：多组热伏发电模组、热水供应系统以及冷水供应系统；热伏发电模组包括至少两个散热器，散热器相邻间隔设置，相邻的两个散热器分别为：热散热器和冷散热器，该两个散热器之间设有多片用于热伏发电的热电模块，热水供应系统与热散热器连接，冷水供应系统与冷散热器连接。本发明通过设置相对设置的热散热器和冷散热器形槽热端和冷端，其之间设置热电模组，使得整体模块化，可以根据需求调整使用数量，方便维护和组装。

Description

一种模块化地热发电系统 技术领域
本发明涉及地热发电技术领域，尤其涉及一种模块化地热发电系统。
背景技术
现有的地热发电系统能量转化形式大部分为将热能转化为机械能，再转化为电能，过程中不可避免存在机械损耗、管线结垢等弊端，且系统整体较为复杂，亟待优化。
热电材料是一类能实现热电直接转化的功能材料，其内部的载流子在温度差异作用下产生电动势。具体地，当在热电材料的两端施加不同的温度时，塞贝克效应会导致热电材料内部的电荷分布发生变化，产生稳定电势差，从而产生电流。热电材料的温差发电技术突破了热能—机械能—电能这一传统的能量转换路径，避免了机械做功的中间过程，实现了热电直接转换，具有运行简单、无机械能损耗、稳定可靠、绿色清洁等独特优势。
目前有研发团队设计了地热热伏发电机，验证了温差发电技术应用于中低温地热发电的可行性，但其设备的装机容量有限，其次采用了整体式设计导致设备体积庞大而不具备良好的可拓展性，且不方便后期运行维护，难以实现规模化的工程应用。
发明内容
本发明的目的在于针对现有技术的不足，提供一种模块化地热发电系统，该模块化地热发电系统具有较好的可拓展性，方便组装和维护。
一种模块化地热发电系统，其包括：多组热伏发电模组；
热水供应系统；
冷水供应系统；
热伏发电模组包括至少两个散热器，散热器相邻间隔设置，相邻的两个散热器分别为：热散热器和冷散热器，该两个散热器之间设有多片用于热伏发电的热电模块，热水供应系统与热散热器连接，冷水供应系统与冷散热器连接。
进一步地，其中至少两个热伏发电模组为一个发电小组，所述散热器包括一个散热壳体，散热壳体的两端分别设有入水接口和出水接口，所述热水供应系统、冷水供应系统分别设置于热伏发电模组的左右两侧，热水供应系统包括热水输入管以及热水输出管，冷水供应系统包括冷水输入管和冷水输出管；
发电小组中相邻的两个热伏发电模组之间通过管道将热散热器、冷散热器对应连接，将各个热伏发电模组的热散热器、冷散热器对应串联；发电小组中位于两侧的热伏发电模组为主热伏发电模组和副热伏发电模组，主热伏发电模组的热散热器入水接口通过管道与热水输入管连接，副热伏发电模组的冷散热器入水接口通过管道与冷水输入管连接；主热伏发电模组的冷散热器出水接口通过管道与冷水输处管连接，副热伏发电模组的热散热器出水接口通过管道与热水输出管连接。
进一步地，热伏发电模组包括2K+1个散热器，K为自然数；其中K个散热器为热散热器；K+1个散热器为冷散热器，热散热器设置于相邻的两个冷散热器之间；还包括用于固定散热器的固定结构，所述固定结构两个夹板， 两个夹板通过连接件固定连接。
进一步地，所述散热壳体包括盖板和底壳，底壳包括底板，底板的中部设有多条间隔设置的凸肋，凸肋沿着散热器长度方向设置，将散热器内部空间分割成多条流水槽，所述入水接口、出水接口分别设置在散热壳体左侧的下端和右侧的上端。
优选地，底壳的左侧板、右侧板均呈倾斜设置；凸棱的左端面与左侧板的间距从上至下逐渐增加，凸棱的右端面与右侧板的间距从上至下逐渐减小。
进一步地，模块化地热发电系统还包括用于固定热伏发电模组的支架；所述支架包括底板，底板的中部设有支持板，支持板的两侧面分别连接有多块间隔设置的承重板，所述热伏发电模组固定于承重板。
进一步地，所述两个热伏发电模组为一个发电小组，所述热水输入管、热水输出管位于热伏发电模组一侧的前端和后端，冷水输入管、冷水输出管位于热伏发电模组另一侧的前端和后端，热水输入管的侧面连接有多根横向设置的热水输入支管，热水输入支管通过管道与热散热器的入水接口连接，热水输出管连接有多根横向设置的热水输出支管，热水输出支管通过管道与热散热器的出水接口连接；热水输入支管与热水输出支管交替设置；冷水输入管的侧面连接有多根横向设置的冷水输入支管42，冷水输入支管42通过管道与冷散冷器的入水接口连接，冷水输出管连接有多根横向设置的冷水输出支管，冷水输出支管通过管道与冷散冷器的出水接口连接；冷水输入支管42与冷水输出支管交替设置。
进一步地，还包括箱体，热伏发电模组、冷水供应系统、热水供应系统 以及支架均设置于箱体内，箱体的外侧设有与冷水供应系统、热水供应系统连接的接口。
进一步地，箱体的上端设有控制系统，控制系统用于监控冷水供应系统、热水供应系统以及热伏发电模组的工作状态。
本发明的有益效果：本发明通过设置相对设置的热散热器和冷散热器形槽热端和冷端，其之间设置热电模组，使得整体模块化，可以根据需求调整使用数量，方便维护和组装。
附图说明
图1为本实施例的一种结构示意图。
图2为图1除去箱体、控制系统的示意图。
图3为图2的另一视角示意图。
图4为热伏发电模组的示意图。
图5为图4的一种分解示意图。
图6为图3除去热伏发电模组的一种局部分解示意图。
图7为散热器的一种结构示意图。
图8为图7的一种剖视示意图。
图9为发电小组与热伏发电模组、热水供应系统配合的一种示意图。
附图标记包括：
1——控制系统；2——箱体；3——热伏发电模组；4——冷水供应系统；
5——热水供应系统；6——支架；
31——散热器；32——热电模块；33——散热壳体；34——散热片；36
——夹板；37——连接件；311——出水接口；312——入水接口；331——凸肋；332——右侧板；333——流水槽；
41——冷水输出管；42——冷水输入支管；43——冷水输出支管；44—
—冷水输入管；
51——热水输入支管；52——热水输出支管；53——热水输出管；54—
—热水输入管。
具体实施方式
以下结合附图对本发明进行详细的描述。如图1至图8所示。
实施例：参见图1至图5，一种模块化地热发电系统，其包括：多组热伏发电模组3；
热水供应系统5；
冷水供应系统4；
热伏发电模组3包括至少两个散热器31，散热器31相邻间隔设置，相邻的两个散热器31分别为：热散热器31和冷散热器31，该两个散热器31之间设有多片用于热伏发电的热电模块32，热水供应系统5与热散热器31连接，冷水供应系统4与冷散热器31连接。
本技术方案在实施时，通过将热伏发电模组3模块化，使得本技术方案能够根据需求设置相应数量的热伏发电模组3。在具体实施时，每组热伏发电模组的热电模块32均通过导线与发电电路连接，通过发电电路将产生的电能对外输出，发电电路为现有技术，且不是申请技术创新点所在，因此不再赘述。在实施时，热水供应系统5向热散热器31提供热水，冷水供应系统4 向冷散热器31提供冷水，热电模块32的两侧形成热端和冷端，热端与冷端之间产生电势差并形成电能，且对外输出。通过模块化设计热电模块32，使得其应用具有较好的拓展性能，也方便组装和维护。优选地，热电模块的两侧均设有柔性的散热片34，并通过散热片34与散热器抵接。
进一步地，其中至少两个热伏发电模组3为一个发电小组，所述散热器31包括一个散热壳体33，散热壳体33的两端分别设有入水接口312和出水接口311，所述热水供应系统5、冷水供应系统4分别设置于热伏发电模组3的左右两侧，热水供应系统5包括热水输入管54以及热水输出管53，冷水供应系统4包括冷水输入管44和冷水输出管41；
发电小组中相邻的两个热伏发电模组3之间通过管道将热换热器31、冷换热器31对应连接，将各个热伏发电模组3的热换热器31、冷换热器31对应串联；参见图11；发电小组中位于两侧的热伏发电模组3为主热伏发电模组38和副热伏发电模组39，这里的两侧是指位于最外侧的两侧；当发电小组是上下分布时，位于最下侧和最上侧的两组热伏发电模组3为主热伏发电模组38和副热伏发电模组39；当发电小组是水平设置时，位于最边上的两组热伏发电模组3为主热伏发电模组38和副热伏发电模组39。
主热伏发电模组38的热换热器入水接口311通过管道与热水输入管54连接，副热伏发电模组39的热换热器出水接口312通过管道与热水输出管53连接；主热伏发电模组38的冷换热器入水接口311通过管道与冷水输入管44连接，副热伏发电模组39的冷换热器出水接口312通过管道与冷水输出管41连接。参见图2、图3、图11。
在实际应用中，一个热伏发电模组3直接与冷水供应系统4、热水供应系统5连接，由于水流的速度比较快，热交换的量比较小；导致热水、冷水的温度变化较小，热伏转换的效率偏低；如果水流降低流速，则冷散热器31、热散热器31的温差将变小，降低热伏转换的功率；如果延长散热器31，则导致整个装置的体积变大；为了很好的平衡上述问题，申请人开发了一种串联连接方式，将至少2个热伏发电模组3通过管道串联起来，管道可采用柔性的波纹管等。在本实施例中采用了2个热伏发电模组3串联，该2个热伏发电模组3呈上下设置，为方便理解，上方的热伏发电模组3为主热伏发电模组3，下方的热伏发电模组3为副热伏发电模组3。
主热伏发电模组38的热换热器31右侧的入水接口311通过直线管道与热水输入管54连接，主热伏发电模组38的热换热器31左侧的出水接口312通过U型管道与副热伏发电模组39的热换热器31左侧的入水接口311连接；副热伏发电模组39的热换热器右侧的出水接口312通过直线管道与热水输出管连接，形成热水循环。
主热伏发电模组38的冷换热器31左侧的入水接口311通过直线管道与冷水输入管44连接，主热伏发电模组38的冷换热器31右侧的出水接口312通过U形管道与副热伏发电模组39的冷换热器31右侧的入水接口311连接；副热伏发电模组39的冷换热器31左侧的出水接口312通过直线管道与冷水输出管41连接，形成冷水循环。
为方便管道连接，相邻的热伏发电模组3串联时，其中一个热伏发电模组3的热散热器31出口与另一个热伏发电模组3的热散热器31入口位于同侧，并通过管道连接；其中一个热伏发电模组3的冷散热器31出口与另一个 热伏发电模组3的冷散热器31出口位于同侧，并通过管道连接。
参见图9；当有2N+1个(如3个)热伏发电模组3串联时，冷水输入管44与冷水输出管41位于热伏发电模组3的两侧，热水输出管53、热水输入管54也位于热伏发电模组3的两侧，此时热水流经、冷水流经均呈S线路。
其次，在同一个热伏发电模块3中冷水流路和热水流路采用两条相反的路线，热水从左到右，冷水从右到左，或反之；使得热伏发电模组3两侧的冷散热器31、热散热器31之间相对的温差波动不大，热伏发电模组3中的热电模块32的工作状态基本保持一致，有利于电能的收集。
进一步地，热伏发电模组3包括2K+1个散热器31，K为自然数；其中K个散热器31为热散热器31；K+1个散热器31为冷散热器31，热散热器31设置于相邻的两个冷散热器31之间；还包括用于固定散热器31的固定结构，所述固定结构两个夹板36，两个夹板36通过连接件37固定连接。
在具体实施时，热伏发电模块设置于冷散热器31与热散热器31之间；如果最外侧的散热器31有热散热器31，则该热散热器31会与外界发生热交换，会损失一部分热量；为了能够将热量最大化利用，将冷散热器31设在两侧的最外侧，热散热器31设置在期间。K可以为1、2、3、4、5等。
参见图6、图7；进一步地，所述散热壳体33包括盖板和底壳，底壳包括底板，底板的中部设有多条间隔设置的凸肋331，凸肋331沿着散热器31长度方向设置，将散热器31内部空间分割成多条流水槽333，所述入水接口312、出水接口311分别设置在散热壳体33左侧的下端和右侧的上端。
优选地，底壳的左侧板、右侧板332均呈倾斜设置；凸棱的左端面与左侧板的间距从上至下逐渐增加，凸棱的右端面与右侧板332的间距从上至下逐渐减小。
为减小散热器31内部的扰流，在散热壳体33内设置凸肋331，并形成多条流水槽333；由于散热器31的宽度大于接口的宽度，从接口进入冷水或热水，如果将散热器31制作为规则的矩形，则在散热器31内部将形成不同流速层，导致散热器31表面的温度有温差，影响到热伏发电模块工作效率；之前本发明人也设计过类似的散热器31，通过将凸肋331的端部设计为不同的弧度，以调整平衡流水槽333的流速；但这给制作带来了难度；为方便制作，且能平衡各个流水槽333的流速，本技术方案将底板的左侧板、右侧板332设置为倾斜状，倾斜角度为15—30度之间；左侧板、右侧板设置为倾斜状后，散热器31左端部、右端部的水压得到调整，使得所有的流水槽333左端、右端的压差相等或大致相等，从而使得流水槽333水流速度大致相等，进而使得散热器31的温度在宽度方向上保持一致，在长度方向保持线性温差，冷散热器31和热散热器31之间在长度方向保持相等或大致的温差，使得热伏发电模块稳定工作。
其次，凸肋331还可以对换热器起到结构加固的效果，换热器在长度方向的温度是逐渐上升或下降的，换热器一般是由金属材质，其热胀冷缩的尺度不一，容易造成内部形成较大的内应力，导致盖板和底壳产生变形，影响与热电模块之间的热接触；增加凸肋331后，整体强度提高，可以减少变形或避免变形
参见图4，进一步地，模块化地热发电系统还包括用于固定热伏发电模 组3的支架6；所述支架6包括底板，底板的中部设有支持板，支持板的两侧面分别连接有多块间隔设置的承重板，所述热伏发电模组3固定于承重板。
设置支架6，可方便将热伏发电模组3进行固定。
进一步地，所述两个热伏发电模组3为一个发电小组，所述热水输入管54、热水输出管位于热伏发电模组3一侧的前端和后端，冷水输入管44、冷水输出管41位于热伏发电模组3另一侧的前端和后端，热水输入管54的侧面连接有多根横向设置的热水输入支管51，热水输入支管51通过管道与热散热器31的入水接口312连接，热水输出管连接有多根横向设置的热水输出支管52，热水输出支管52通过管道与热散热器31的出水接口311连接；热水输入支管51与热水输出支管52交替设置；冷水输入管44的侧面连接有多根横向设置的冷水输入支管42，冷水输入支管42通过管道与冷散冷器的入水接口312连接，冷水输出管41连接有多根横向设置的冷水输出支管43，冷水输出支管43通过管道与冷散冷器的出水接口311连接；冷水输入支管42与冷水输出支管43交替设置。
将两个热伏发电模组3为一个发电小组，使得冷水输入管44、冷水输出管41位于同一侧，热水输入管54、热水输出管位于同一侧；便于管理；其次通过交替设置冷水输入支管42、冷水输出支管43；交替设置热水输入支管51、热水输出管支管使得空间得到合理利用。
参见图1，进一步地，还包括箱体2，热伏发电模组3、冷水供应系统4、热水供应系统5以及支架6均设置于箱体2内，箱体2的外侧设有与冷水供应系统4、热水供应系统5连接的接口。
为保护热伏发电模组3正常工作，以及冷水供应系统4、热水供应系统5不受外界干扰，本技术方案设置了箱体2，同时设置了接口与冷水供应系统4、热水供应系统5连接，以方便将热水、冷水引入以及流出。热水采用地热水，冷水可采用河水。
进一步地，箱体2的上端设有控制系统1，控制系统1用于监控冷水供应系统4、热水供应系统5以及热伏发电模组3的工作状态。
以上内容仅为本发明的较佳实施例，对于本领域的普通技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，本说明书内容不应理解为对本发明的限制。

Claims (9)

  1. 一种模块化地热发电系统，其特征在于：其包括：
    多组热伏发电模组；
    热水供应系统；
    冷水供应系统；
    热伏发电模组包括至少两个散热器，散热器相邻间隔设置，相邻的两个散热器分别为：热散热器和冷散热器，该两个散热器之间设有多片用于热伏发电的热电模块，热水供应系统与热散热器连接，冷水供应系统与冷散热器连接。
  2. 根据权利要求1所述的一种模块化地热发电系统，其特征在于：其中至少两个热伏发电模组为一个发电小组，所述散热器包括一个散热壳体，散热壳体的两端分别设有入水接口和出水接口，所述热水供应系统、冷水供应系统分别设置于热伏发电模组的左右两侧，热水供应系统包括热水输入管以及热水输出管，冷水供应系统包括冷水输入管和冷水输出管；
    发电小组中相邻的两个热伏发电模组之间通过管道将热散热器、冷散热器对应连接，将各个热伏发电模组的热散热器、冷散热器对应串联；发电小组中位于两侧的热伏发电模组为主热伏发电模组和副热伏发电模组，主热伏发电模组的热换热器入水接口通过管道与热水输入管连接，副热伏发电模组的热换热器出水接口通过管道与热水输出管连接；主热伏发电模组的冷换热器入水接口通过管道与冷水输入管连接，副热伏发电模组的冷换热器出水接口通过管道与冷水输出管连接。
  3. 根据权利要求2所述的一种模块化地热发电系统，其特征在于：热伏发电 模组包括2K+1个散热器，K为自然数；其中K个散热器为热散热器；K+1个散热器为冷散热器，热散热器设置于相邻的两个冷散热器之间；还包括用于固定散热器的固定结构，所述固定结构两个夹板，两个夹板通过连接件固定连接。
  4. 根据权利要求2所述的一种模块化地热发电系统，其特征在于：所述散热壳体包括盖板和底壳，底壳包括底板，底板的中部设有多条间隔设置的凸肋，凸肋沿着散热器长度方向设置，将散热器内部空间分割成多条流水槽，所述入水接口、出水接口分别设置在散热壳体左侧的下端和右侧的上端。
  5. 根据权利要求4所述的一种模块化地热发电系统，其特征在于：底壳的左侧板、右侧板均呈倾斜设置；凸棱的左端面与左侧板的间距从上至下逐渐增加，凸棱的右端面与右侧板的间距从上至下逐渐减小。
  6. 根据权利要求1所述的一种模块化地热发电系统，其特征在于：所述模块化地热发电系统还包括用于固定热伏发电模组的支架；所述支架包括底板，底板的中部设有支持板，支持板的两侧面分别连接有多块间隔设置的承重板，所述热伏发电模组固定于承重板。
  7. 根据权利要求2所述的一种模块化地热发电系统，其特征在于：所述两个热伏发电模组为一个发电小组，所述热水输入管、热水输出管位于热伏发电模组一侧的前端和后端，冷水输入管、冷水输出管位于热伏发电模组另一侧的前端和后端，热水输入管的侧面连接有多根横向设置的热水输入支管，热水输入支管通过管道与热散热器的入水接口连接，热水输出管连接有多根横向设置的热水输出支管，热水输出支管通过管道与热散热器的出 水接口连接；热水输入支管与热水输出支管交替设置；冷水输入管的侧面连接有多根横向设置的冷水输入支管，冷水输入支管通过管道与冷散冷器的入水接口连接，冷水输出管连接有多根横向设置的冷水输出支管，冷水输出支管通过管道与冷散冷器的出水接口连接；冷水输入支管与冷水输出支管交替设置。
  8. 根据权利要求1所述的一种模块化地热发电系统，其特征在于：还包括箱体，热伏发电模组、冷水供应系统、热水供应系统以及支架均设置于箱体内，箱体的外侧设有与冷水供应系统、热水供应系统连接的接口。
  9. 根据权利要求8所述的一种模块化地热发电系统，其特征在于：箱体的上端设有控制系统，控制系统用于监控冷水供应系统、热水供应系统以及热伏发电模组的工作状态。
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