CN202417847U - Solar energy heat exchange and power generation system - Google Patents

Solar energy heat exchange and power generation system Download PDF

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Publication number
CN202417847U
CN202417847U CN 201120542707 CN201120542707U CN202417847U CN 202417847 U CN202417847 U CN 202417847U CN 201120542707 CN201120542707 CN 201120542707 CN 201120542707 U CN201120542707 U CN 201120542707U CN 202417847 U CN202417847 U CN 202417847U
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China
Prior art keywords
temperature
heat
agent
power generation
heat exchanger
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Expired - Fee Related
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CN 201120542707
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Chinese (zh)
Inventor
陈展和
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SHENZHEN SUNNY TECH Co Ltd
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SHENZHEN SUNNY TECH Co Ltd
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Priority to CN 201120542707 priority Critical patent/CN202417847U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Abstract

The utility model relates to a solar energy heat exchange and power generation system, which comprises a solar energy concentrating system, a heat collector, a boiler, a heat exchanger and a power generating device. The sunlight is reflected by the solar energy concentrating system and is concentrated to the heat collector, and luminous energy is converted into heat energy and stored for standby by heat-storing media. Heat energy of the heat-storing media is transmitted to the boiler according to the need. The power generating device comprises a main system and an auxiliary system, wherein the main system comprises a high-temperature vaporization agent, a power generator unit and the heat exchanger, and the auxiliary system comprises a low-temperature vaporization agent and another power generator unit. The high-temperature vaporization agent is heated in the boiler to generate vaporization to drive the power generator unit to generate power, and is cooled and liquefied for recycle by passing through the heat exchanger via a pipeline after vaporizing for the power generation. The low-temperature vaporization agent in the heat exchange is heated by vapor of the high-temperature vaporization agent passing through the heat exchange to generate vapor to drive the other power generator unit to generate power. By the aid of the solar energy heat exchange and power generation system, utilization efficiency of heat resources can be improved, and various vaporizing liquids can be comprehensively and flexibly considered to be mixed to realize multi-level heat exchange and vaporized power generation.

Description

The solar heat-exchange power generation system
Technical field
The utility model relates to a kind of solar heat-exchange power generation system, is widely used in fields such as solar energy thermal-power-generating, solar airconditioning, heating, hot water.
Background technique
Solar energy resources is very abundant, and solar radiation is merely 1/2200000000th of its total radiation energy to the energy of the earth, and solar irradiance just equaled the total energy consumption in 1 year in the world in 1.5 hours, also is equivalent to 80,000 times of world's generation current total amount.Though solar energy resources is abundant, be clean energy resourcies the most noticeable in the renewable energy sources, that developmental research maximum, application is the widest, and also free the use, need not transportation, environment there is not any pollution.
The low-carbon environment-friendly benefit of photothermal power generation is very high, has absolute environmental ecology advantage, is the most green generation technology.Year sunshine duration is higher than 5000MJ/cm greater than 2000 hours, radiation amount 2The area in year belongs to the abundant or more rich area of solar energy resources, and area accounts for national total area more than 2/3, and sunshine is sufficient, has the good condition of utilizing solar energy.
The model utility content
The purpose of the utility model provides a kind of solar heat-exchange power generation system that can realize multi-stage heat exchanger, multistage vaporization generating, make full use of the energy.
The utility model solves the technological scheme that its technical problem adopted:
A kind of solar heat-exchange power generation system; It comprises solar concentrating system, heat collector, boiler and electricity generating device; Solar concentrating system comprises at least one condenser; Said condenser focuses in the said heat collector after sunlight is reflected, and the solar energy heat-storage medium transfers to heat energy in the boiler:
Said electricity generating device comprises generating main system and power generation sub-system; Said generating main system comprises high-temperature evaporation agent, first generator set and heat exchanger; Said power generation sub-system comprises the low-temperature vaporization agent and second generator set; Said high-temperature evaporation agent is heated generation steam and promotes the generating of first generator set in said boiler, be provided with the cryogenic media cavity volume that holds the low-temperature vaporization agent in the said heat exchanger, and also be provided with the high temperature media pipeline that passes said cryogenic media cavity volume in the heat exchanger; The vapor stream of said high-temperature evaporation agent is through said high temperature media pipeline, and said low-temperature vaporization agent heating is produced steam promotes the generating of second generator set.
Preferably, said high-temperature evaporation agent comprises that boiling point is at the liquid more than 70 ℃.
Preferably, said low-temperature vaporization agent comprises that boiling point is at the liquid below 70 ℃.
Preferably, the steam of said high-temperature evaporation agent is through said heat exchanger, by said low-temperature vaporization agent cooling.
Preferably, be provided with first high-pressure service pump that cooled high-temperature evaporation agent is refluxed between said heat exchanger and the boiler, be provided with second high-pressure service pump between said second generator set and the heat exchanger the steam cooling liquefaction backflow of low-temperature vaporization agent.
Preferably; Be provided with the temperature detection automatic control system that is used to detect said low-temperature vaporization agent temperature in the said heat exchanger; And the concurrent heating medium that is provided with the agent of transmission high-temperature evaporation between said boiler and the heat exchanger is gone into pipe and is mended thermal medium exit tube, and said concurrent heating medium is gone into pipe and linked to each other with inner concurrent heating pipeline or the high-temperature heat-storage medium pipeline of heat exchanger with the benefit thermal medium exit tube.
Preferably; Be provided with the temperature detection control system that is used to detect said low-temperature vaporization agent temperature in the said heat exchanger; And the concurrent heating medium that is provided with the agent of transmission heat storage material high-temperature evaporation between said heat collector and the heat exchanger is gone into pipe and is mended thermal medium exit tube, and said concurrent heating medium is gone into pipe and linked to each other with inner concurrent heating pipeline or the high temperature media pipeline of heat exchanger with the benefit thermal medium exit tube.
Preferably, said solar concentrating system comprises the mirror battle array that a plurality of condensers are formed.
In order to practice thrift cost of investment; Improve the thermal resource utilization ratio; The utility model can be considered to adopt single comprehensively, flexibly or mix multiple vaporization liquid, realizes the system of multi-stage heat exchanger, vaporization generating, and heat energy efficiently is converted into electric energy; Simultaneously, can solve safe long-term operation problem under harsh weather, environment.Particularly winter temperature is lower; And solar energy resources is abundant area; Western like Tibet, Gansu is northern, Ningxia is northern, southern Xinjiang etc., low-temperature electricity-generating technology be the energy demand of these low developed areas of thorough solution, and quickens it sound assurance is provided.
Description of drawings
Fig. 1 is the first mode of execution schematic representation of the solar heat-exchange power generation system of the utility model;
Fig. 2 is the second mode of execution schematic representation of the solar heat-exchange power generation system of the utility model.
Reference character: 1-solar concentrating system; The 2-heat collector; The 3-boiler; 4-high-temperature evaporation agent steam electric power unit; The 5-heat exchanger; 50-high temperature media pipeline; 51-cryogenic media chamber; 52-high temperature media inlet; The outlet of 53-high temperature media; The outlet of 54-cryogenic media; 55-cryogenic media inlet; 6-first high-pressure service pump; 7-Low Temperature Steam generator set; 8-second high-pressure service pump; 9-concurrent heating pipeline; 90-concurrent heating medium is gone into pipe; 91-mends thermal medium exit tube; 92-the 3rd high-pressure service pump.
Embodiment
Understand and enforcement the utility model for the ease of those of ordinary skills, the utility model is done further to describe in detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the solar heat-exchange power generation system of the utility model comprises solar concentrating system 1, heat collector 2, boiler 3 and electricity generating device, and said electricity generating device comprises generating main system and power generation sub-system.Main system comprises high-temperature evaporation agent, high-temperature steam generator set 4, heat exchanger 5, first high-pressure service pump 6, and subtense angle comprises low-temperature vaporization agent, Low Temperature Steam generator 7 and second high-pressure service pump 8.Said high temperature of the utility model and low temperature be the two comparatively speaking.
Said solar concentrating system 1 includes one or more condensers; Condenser can with the heating of the heat storage material in the heat collector 2, thereby be converted into heat energy by luminous energy with focusing on heat collector 2 after the sunlight reflection; By heat-storage medium storage, subsequent use; Heat energy with heat-storage medium transfers in the boiler as required, after the heat storage material after being heated gets into boiler 3, with heating of the high-temperature evaporation agent in the boiler 3 and generation high-temperature steam; The high-temperature steam that produces in the boiler 3 promotes 4 generatings of high temperature generator set; High-temperature steam through said high temperature generator set 4 gets in the high temperature media pipeline 50 of heat exchanger 5 through high temperature media inlet 52, after low-temperature vaporization agent cooling, becomes liquid and is back in the boiler 3 from high temperature media outlet 53, first high-pressure service pump 6, utilizes thereby high-temperature evaporation agent steam is able to liquefaction through the heat exchange cooling again.
Above-mentioned solar power system is the heat exchange main system of the utility model, will introduce the heat exchange subtense angle below.Inside at said heat exchanger 5; The outside of high temperature media pipeline 50 is a cryogenic media chamber 51, in the low-temperature vaporization agent is housed, after high-temperature evaporation agent steam gets into high temperature media pipeline 50; The low-temperature vaporization agent will be by these pipeline 50 heating; Thereby the generation Low Temperature Steam, Low Temperature Steam transfers to low-temperature electricity-generating unit 7 through cryogenic media outlet 54, promotes 7 generatings of low-temperature electricity-generating unit.Low Temperature Steam after the generating is back to low-temperature vaporization agent recovering container through air cooling, or is transmitted back in the said heat exchanger 5 by second high-pressure service pump 5 after the direct water-cooling.
Above-described solar heat-exchange power generation system is the electricity-generating method in the non high temperature area; When above-mentioned solar heat-exchange power generation system is in high-temperature zone; The desert more than 60 ℃ can be reached like surface temperature, when this moment, outside air temperature was higher than steam generation agent steam point, high-temperature evaporation agent vapour system can be stopped; Low-temperature vaporization agent in the cryogenic media chamber 51 in the heat exchanger 5 directly obtains heat energy and is vaporized from air through heat exchanger 5 outer walls, thereby promotes 7 generatings of low-temperature electricity-generating unit.After the generating, cooling is back to ground through the high-altitude, or direct water-cooling, is focused to recovering container, injects heat exchanger 5 through second high-pressure service pump 8 again and recycles.
In the utility model mode of execution; Said high-temperature evaporation agent be boiling point at the liquid more than 70 ℃, said low-temperature vaporization agent is that boiling point is at the liquid below 70 ℃, usually; The boiling point that can select the high-temperature evaporation agent for use is at 70 ℃~100 ℃ liquid, for example water, ethanol, heptane etc.; Low-temperature vaporization agent meeting selects for use boiling point at 10 ℃~70 ℃ liquid, and for example low temperature such as carbon sulfide, pentane, methyl alcohol are in liquid material.The boiling point that also might select the low-temperature vaporization agent for use at cold area is at the liquid below 10 ℃, for example butane etc.; The boiling point of perhaps selecting the high-temperature evaporation agent for use in special circumstances is at the liquid more than 100 ℃, for example octane etc.
In other mode of execution of the utility model; High-temperature evaporation agent and low-temperature vaporization agent also can be adopted other scope; As long as the two is comparatively speaking, one belong to the high-temperature evaporation agent, another belongs to the low-temperature vaporization agent and can realize, the mode that also can adopt multiple vaporization agent to mix certainly realizes.
In the utility model mode of execution; Have additional the concurrent heating medium between said boiler 3 and the heat exchanger 5 and go into pipe 90 and mend thermal medium exit tube 91, the end of the two is communicated with boiler 3, and the other end is communicated with high temperature media outlet 53 with the high temperature media inlet 52 of high temperature media pipeline 50; And be provided with temperature detection control system (not shown) in the said cryogenic media chamber 51; When high-temperature evaporation agent steam thermal energy is not enough to low-temperature vaporization agent vaporization generating needs, when needing concurrent heating to vaporize, said temperature detection control system will start automatically; Open the concurrent heating medium and go into the valve (not shown) of pipe 90; Through the 3rd high-pressure service pump 92 the concurrent heating medium in the boiler 3 (or high-temperature evaporation agent steam) is transferred in the high temperature media pipeline 50, after the replacement heat, be back in the boiler 3 through mending thermal medium exit tube 91.In other embodiments, also can in heat exchanger 5, set up the high-temperature evaporation agent that is used to circulate of a concurrent heating pipeline and carry out concurrent heating.Perhaps directly use high-temperature evaporation agent steam to be used for concurrent heating, when the low-temperature vaporization agent is not enough to produce steam, can open valve, high-temperature evaporation agent vapor transmission to concurrent heating medium is gone in the pipe 90 to carry out concurrent heating.
Shown in Figure 2 is another mode of execution of the utility model solar heat-exchange power generation system.With the distinctive points of a last mode of execution be: in heat exchanger 5, set up a concurrent heating pipeline 9; The concurrent heating medium is gone into pipe 90 and is linked to each other with concurrent heating pipeline 9 with an end of mending thermal medium exit tube 91; The other end links to each other with heat storage material in the heat collector 2, when high-temperature evaporation agent steam thermal energy is not enough to low-temperature vaporization agent vaporization generating needs, needs concurrent heating to vaporize; Said temperature detection control system will start automatically; Open the concurrent heating medium and go into the valve of pipe 90, through the 3rd high-pressure service pump 92 heat storage material in the heat collector 2 is transferred in the concurrent heating pipeline 9, heat storage material is back in the heat collector 2 through mending thermal medium exit tube 91 after the replacement heat.In other embodiments, the concurrent heating medium is gone into pipe 90 and is mended thermal medium exit tube 91 and also can directly link to each other with high temperature media pipeline 50, and at this moment, the heat storage material in the heat collector 2 is identical with high-temperature evaporation agent material need in the boiler 3.
The solar heat-exchange power generation system of the utility model has multiple vaporization agent, and mixed process is united the vaporization generating: various vaporization agents are preheating in the high temperature air of ground, heat exchange all.For example: vapourizing temperature is 10-70 ℃ directly heat exchange from 50-80 ℃ air, vaporization of low-temperature vaporization agent, generating; Vapourizing temperature is in the high-temperature evaporation agent more than 80 ℃; Also can do the heat energy storage material in the heat collector 2; When temperature drops to below 40 ℃; High-temperature evaporation agent heat supply gives vapourizing temperature 40-70 ℃ low-temperature vaporization agent preheating, vaporization, generating, or directly by solar concentrating system with more than the high-temperature evaporation agent concurrent heating to 80 ℃, realize the high-temperature evaporation generating.The high-temperature steam that has generated electricity through low-temperature vaporization agent (vapourizing temperature is lower than below 70 ℃) heat exchange cooling, is able to liquefaction, recycling.Simultaneously, the low-temperature vaporization agent obtains the heat energy vaporization from heat exchange after, with the direct generation of electricity, after air cooling, liquefaction, recirculation is used.
In the non high temperature area or low temperature season (as: temperature is lower than 45 ℃); Earlier with vapourizing temperature in the high-temperature evaporation agent more than 80 ℃, be able to vaporization, generating from heat collector 2 heat exchange after, cool off through low-temperature vaporization agent (vapourizing temperature is lower than below 70 ℃) heat exchange; Be able to liquefaction, recycling.Simultaneously, the low-temperature vaporization agent is able to vaporization from heat exchange after, promote 7 direct generations of electricity of low-temperature electricity-generating unit, after air cooling, liquefaction, recirculation is used; Perhaps, directly just all use low-temperature vaporization agent vaporization generating.
Said high-temperature steam generator set 4 is screw expansion generator set or low-temperature flue gas turbine generator group with Low Temperature Steam generator set 7.
The utility model is a kind of high-temperature desert or cold area that can be applied in the abundance at sunshine, realizes the solar heat-exchange power generation system of multi-stage heat exchanger, multistage vaporization generating.
The above; It only is practical implementation case in order to explanation the utility model; But be not in order to limit the practical range of the utility model; Such as those skilled in the art must be covered by the scope of the utility model claim not breaking away from all equivalence changes of being accomplished under indicated spirit of the utility model and the principle or modifying.

Claims (8)

1. solar heat-exchange power generation system; It comprises solar concentrating system (1), heat collector (2), boiler (3) and electricity generating device; Solar concentrating system (1) comprises at least one condenser, and said condenser focuses in the said heat collector (2) after sunlight is reflected, and the solar energy heat-storage medium transfers to heat energy in the boiler (3); It is characterized in that, comprising:
Said electricity generating device comprises generating main system and power generation sub-system; Said generating main system comprises high-temperature evaporation agent, first generator set (4) and heat exchanger (5); Said power generation sub-system comprises low-temperature vaporization agent and second generator set (7); Said high-temperature evaporation agent is heated generation steam and promotes first generator set (4) generating in said boiler; Be provided with the cryogenic media cavity volume (51) that holds the low-temperature vaporization agent in the said heat exchanger (5); And also be provided with the high temperature media pipeline (50) that passes said cryogenic media cavity volume (51) in the heat exchanger (5), the vapor stream of said high-temperature evaporation agent is through said high temperature media pipeline (50), and said low-temperature vaporization agent heating is produced steam promotes second generator set (7) generating.
2. solar heat-exchange power generation system as claimed in claim 1 is characterized in that: said high-temperature evaporation agent comprises that boiling point is at the liquid more than 70 ℃.
3. solar heat-exchange power generation system as claimed in claim 2 is characterized in that: said low-temperature vaporization agent comprises that boiling point is at the liquid below 70 ℃.
4. solar heat-exchange power generation system as claimed in claim 3 is characterized in that: the steam of said high-temperature evaporation agent is through said heat exchanger (5), by said low-temperature vaporization agent cooling.
5. solar heat-exchange power generation system as claimed in claim 1; It is characterized in that: be provided with first high-pressure service pump that cooled high-temperature evaporation agent is refluxed between said heat exchanger (5) and the boiler (3), be provided with second high-pressure service pump between said second generator set (7) and the heat exchanger (5) the steam cooling liquefaction backflow of low-temperature vaporization agent.
6. solar heat-exchange power generation system as claimed in claim 1; It is characterized in that: be provided with the temperature detection automatic control system that is used to detect said low-temperature vaporization agent temperature in the said heat exchanger (5); And the concurrent heating medium that is provided with the agent of transmission high-temperature evaporation between said boiler (3) and the heat exchanger (5) is gone into pipe (90) and is mended thermal medium exit tube (91), and said concurrent heating medium is gone into pipe (90) and linked to each other with inner concurrent heating pipeline or the high-temperature heat-storage medium pipeline (50) of heat exchanger (5) with benefit thermal medium exit tube (91).
7. solar heat-exchange power generation system as claimed in claim 1; It is characterized in that: be provided with the temperature detection control system that is used to detect said low-temperature vaporization agent temperature in the said heat exchanger (5); And the concurrent heating medium that is provided with the transmission heat storage material between said heat collector (2) and the heat exchanger (5) is gone into pipe (90) and is mended thermal medium exit tube (91), and said concurrent heating medium is gone into pipe (90) and linked to each other with inner concurrent heating pipeline (9) or the high temperature media pipeline (50) of heat exchanger (5) with benefit thermal medium exit tube (91).
8. solar heat-exchange power generation system as claimed in claim 1 is characterized in that: said solar concentrating system comprises the mirror battle array that a plurality of condensers are formed.
CN 201120542707 2011-12-22 2011-12-22 Solar energy heat exchange and power generation system Expired - Fee Related CN202417847U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102900638A (en) * 2012-09-11 2013-01-30 王振铎 Heat energy driven device and driving method thereof
CN103174612A (en) * 2011-12-22 2013-06-26 深圳市阳能科技有限公司 Solar energy heat exchange and power generation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103174612A (en) * 2011-12-22 2013-06-26 深圳市阳能科技有限公司 Solar energy heat exchange and power generation system
CN102900638A (en) * 2012-09-11 2013-01-30 王振铎 Heat energy driven device and driving method thereof

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120905

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