CN103267374A - Solar heat collection and energy storage device, solar thermal electricity generation equipment and control method of solar thermal electricity generation equipment - Google Patents
Solar heat collection and energy storage device, solar thermal electricity generation equipment and control method of solar thermal electricity generation equipment Download PDFInfo
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- CN103267374A CN103267374A CN2013101946707A CN201310194670A CN103267374A CN 103267374 A CN103267374 A CN 103267374A CN 2013101946707 A CN2013101946707 A CN 2013101946707A CN 201310194670 A CN201310194670 A CN 201310194670A CN 103267374 A CN103267374 A CN 103267374A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The invention discloses a solar heat collection and energy storage device, solar thermal electricity generation equipment and a control method of the solar thermal electricity generation equipment. The solar heat collection and energy storage device is formed by a solar heat collection device and a high-temperature energy storage device in a connected mode, and the solar heat collection device is formed in the method that a heat collection module and a focusing module are connected through a connecting pipe. The solar thermal electricity generation equipment comprises the solar heat collection and energy storage device, an automatic control device and a constant-temperature steamer electricity generation device. Heat energy stored in the solar heat collection and energy storage device is transported to a constant-temperature tank of the constant-temperature steamer electricity generation device to provide thermal electricity generation energy sources for the constant-temperature steamer electricity generation device; the automatic control device is used for controlling the solar heat collection and energy storage device and the constant-temperature steamer electricity generation device to work. The invention further discloses the control method of the solar thermal electricity generation equipment. Compared with the prior art, the solar heat collection and energy storage device, the solar thermal electricity generation equipment and the control method of the solar thermal electricity generation equipment have the advantages that heat collection temperatures are improved, the heat preservation effect is enhanced, heat energy use ratios are high, cost is low, structure is simple and installation is convenient.
Description
Technical field
The present invention relates to a kind of solar heat collection, energy storage device, solar thermal power plants and control method.
Background technology
The mankind face the deficient day by day of going from bad to worse of living environment and intrinsic petrochemical industry fossil energy and in new forms of energy such as development and use water, nuclear, wind, nighttide, they all exist human uncontrollable multiple potential safety hazard again in today; So seek a kind of safe and reliable new forms of energy, to solve the energy demand in the human development, become the research topic that numerous scientific workers seek assiduously.The sun is given human cleaning, safe and reliable green energy resource as universe, is attracting numerous scientific and technical personnel's sight already, more has benevolence person to do one's utmost for it to devote oneself as long as life endures.
The sun confers human inexhaustible green energy resource treasure-house as universe, how she is developed to general general clear energy sources electric energy with regard to it; Scientist from the 1840s countries in the world has carried out big quantity research, has developed the technology that multiple solar energy is converted to electric energy in succession; As: dish formula, disc type, slot type, tower type thermal generation equipment and monocrystalline silicon, polysilicon, PI film photovoltaic generating equipment.But because the sun when arriving earth surface from universe, is subjected to the influence of multiple natural cause, cause existing solar energy generation technology to exist such-and-such defective, as: uncontrollable, investment is big, efficient is low, mounting condition is limited etc.Cause also can't make solar energy today, really become the new forms of energy that can generally use in the human social development.The application is that improve on the basis of 201210087504.2 solar thermal collection system at application number.
Summary of the invention
Technical problem to be solved by this invention is to overcome existing above-mentioned deficiency in the prior art, and provide a kind of small investment, efficient height, controlled solar heat collection, energy storage device, solar thermal power plants and control method, by in, cryogenic fluid is converted to the clean energy resource electricity to solar thermal energy, makes solar energy become main energy sources in the human development.
The present invention solves the problems of the technologies described above the technical scheme that adopts and comprises: a kind of solar heat collection, energy storage device, it is characterized in that the solar heat collection, energy storage device is connected and composed by solar energy heat collector and high temperature energy-storage device, described solar energy heat collector is by heat collecting module, focus module connects and composes by union pipe, heat collecting module comprises several big space vacuum heat collection pipes and a resistant to elevated temperatures header, described big space vacuum heat collection pipe comprises outer tube and interior pipe, interior pipe adopts the heat-exchange tube of band heat transmission fin, the vacuum heat-preserving layer thickness of big space vacuum heat collection pipe is outer more than ten times of tube thickness of big space vacuum heat collection pipe, heat-exchange tube and heat transmission fin fit tightly, heat-exchange tube is provided with passage of heat, the passage of heat of heat-exchange tube is connected to the heat-exchange tube outlet by the heat-exchange tube entrance again through the U-shaped heat transmission fin in both sides, and the heat-exchange tube of the big space of several of heat collecting module vacuum heat collection pipe is communicated with by union pipe is in parallel.
Focus module of the present invention comprises focus lamp, big space vacuum heat collection pipe and resistant to elevated temperatures header, and focus lamp, big space vacuum heat collection pipe are installed on the header.
High temperature energy-storage device of the present invention comprises the high temperature energy-storage jar, the energy storage circulation control valve, the energy storage circulating pump, flow control valve, exhaust-valve, the emptying intake valve, drain pump, the energy storage pump inlet is connected with the outlet of high temperature energy-storage jar, the energy storage circulating-pump outlet is connected with the Flow-rate adjustment valve inlet, the Flow-rate adjustment valve outlet port is connected with the solar energy heat collector entrance, the energy storage circulation control valve is installed between energy storage circulating pump and the flow control valve, the solar energy heat collector outlet is connected with high temperature energy-storage jar entrance, the emptying intake valve is installed on the union pipe of solar energy heat collector outlet, the drain pump outlet is connected with the high temperature energy-storage jar, and the drain pump entrance is connected with the solar energy heat collector entrance by exhaust-valve.
High temperature energy-storage jar of the present invention is provided with thermal insulating warm-keeping layer, rigid layer, heat-insulating material and shell from inside to outside, and thermal insulating warm-keeping layer adopts the asbestos pottery to make, and heat-insulating material adopts rock wool.
The present invention solves the problems of the technologies described above the technical scheme that adopts and also comprises: a kind of solar thermal power plants, described solar thermal power plants comprises automaton, constant temperature steamer TRT and above-mentioned solar heat collection, energy storage device, described constant temperature steamer TRT comprises the constant temperature pump, thermostatic tank, steam generator, the steam turbine intake valve, steam turbine, generator, condenser, high-pressure circulation pump, constant temperature pump and thermostatic tank, the high temperature energy-storage jar connects, steam generator in the thermostatic tank is connected with steam turbine by the steam turbine intake valve, steam turbine and generator, condenser connects, condenser is connected with high-pressure circulation pump, high-pressure circulation pump is connected with steam generator, the heat energy that stores in the solar heat collection, energy storage device is delivered in the thermostatic tank of constant temperature steamer TRT, provide constant temperature steamer TRT hot power generation energy resource, automaton is used for controlling the solar heat collection, energy storage device, the work of constant temperature steamer TRT.
Automaton of the present invention comprises the digital control computer control device, solar energy heat collector middle heat photosensitive elements, solar energy heat collector outlet temperature-sensitive element, the energy storage canister temperature controller, the thermostatic tank temperature controller, the energy storage circulation control valve, thermostatic control valve, steam generator pressure instrument, thermostatic control valve is located on the connecting line between high temperature energy-storage jar and the thermostatic tank, the digital control computer control device is by lead and solar energy heat collector middle heat photosensitive elements, solar energy heat collector outlet temperature-sensitive element, the energy storage canister temperature controller, the thermostatic tank temperature controller, the energy storage circulation control valve, flow control valve, exhaust-valve, the emptying intake valve, thermostatic control valve, the energy storage circulating pump, the constant temperature pump, high-pressure circulation pump, drain pump, the steam turbine intake valve, steam generator pressure instrument is electrically connected, so that control solar heat collection, energy storage device, constant temperature steamer TRT is according to setting program work.
The present invention solves the problems of the technologies described above the technical scheme that adopts and also comprises: a kind of control method of solar thermal power plants, may further comprise the steps: according to selected Turbo-generator Set, working medium and service condition, determine thermostatic tank temperature operation interval and steam generator pressure operation interval; The work of digital control computer control device control solar heat collection, energy storage device; When energy storage canister temperature controller detected temperatures is higher than the thermostatic tank design temperature, the thermostatic control opening of valves, the constant temperature pump is opened, steam turbine inlet open when steam generator pressure instrument detected pressures rises to steam generator operating pressure setting value, high-pressure circulation pump is opened, and solar thermal power plants enters the continuous and stable electric generation running status; When thermostatic tank temperature controller detected temperatures reached thermostatic tank temperature capping value, constant temperature pump, thermostatic control valve were closed; When thermostatic tank temperature controller detected temperatures dropped near thermostatic tank temperature preset lower limit, constant temperature pump, thermostatic control opening of valves went round and began again and realize steadily generating; When energy storage canister temperature controller detected temperatures drop to thermostatic tank design temperature lower limit when following solar thermal power plants out of service, close the solar heat collection, energy storage device, close constant temperature steamer TRT (closing its each parts).
Digital control computer control device control solar heat collection, energy storage device job step of the present invention may further comprise the steps: when solar energy heat collector outlet temperature-sensitive element detected temperatures surpasses energy storage canister temperature controller detected temperatures and reaches the cycle sets temperature of solar heat collection, energy storage device, energy-accumulating medium in the digital control computer control device control high temperature energy-storage jar heats up by the solar energy heat collector circulation, the energy storage circulation control valve is opened, and the energy storage circulating pump starts; When solar energy heat collector outlet temperature-sensitive element detected temperatures changes when exceeding the output temperature scope that the solar heat collection, energy storage device sets, the digital control computer control device is regulated flow automatically by flow control valve, regulates the solar energy heat collector outlet temperature; When dropping to the high temperature energy-storage jar temperature that detects with the energy storage canister temperature controller, solar energy heat collector outlet temperature-sensitive element detected temperatures closes the solar heat collection, energy storage device when identical.
Present embodiment is described closes solar heat collection, energy storage device step and comprises that the energy storage circulation control valve closes, the energy storage circulation pump, exhaust-valve, emptying INO, drain pump starts, after accumulation of energy medium in the solar energy heat collector sent into the high temperature energy-storage jar, exhaust-valve, emptying intake valve, drain pump are closed, and realize that waste heat takes full advantage of.
The major function of solar energy heat collector middle heat photosensitive elements of the present invention is to shift to an earlier date anticipation solar energy heat collector outlet temperature (solar energy heat collector outlet temperature-sensitive element detected temperatures), improves the thermal efficiency and prevents the energy-accumulating medium carbonization simultaneously; When solar energy heat collector middle heat photosensitive elements detected temperatures reaches the cycle sets temperature of solar heat collection, energy storage device when above, the every rising of solar energy heat collector middle heat photosensitive elements detected temperatures is transferred big accumulation of energy rate-of flows 5% for 5 ℃; When solar energy heat collector middle heat photosensitive elements detected temperatures drops to the cycle sets temperature of solar heat collection, energy storage device when following, the every decline of solar energy heat collector middle heat photosensitive elements detected temperatures is turned accumulation of energy rate-of flow 5% down for 5 ℃, stablizing focusing heat collection body outlet temperature, improve energy-accumulating medium service life.
The cycle sets temperature of solar heat collection, energy storage device of the present invention is 200～250 degrees centigrade, 380～400 degrees centigrade of the output temperature scopes that the solar heat collection, energy storage device is set, high temperature energy-storage jar design temperature is 380～400 degrees centigrade, it is 150～200 degrees centigrade that thermostatic tank is set operating temperature range, and the steam generator operating pressure sets value between 2～4 MPas.
The present invention compared with prior art has the following advantages and effect: 1, the full glass vacuum heat collection pipe in big space has improved heat-collecting temperature and heat insulation effect, and the thermal power transfer utilization rate reaches more than 90%; 2, because heat collector is main the composition by the simple glass heat-collecting vacuum tube of manufacturing process, and the investment superiority of effectiveness is remarkable, with existing solar energy thermal-power-generating device ratio, can reduces investment and reach more than 50%; 3, whole-course automation control, energy storage are can also organically combine with the accumulation of energy of paddy electricity the main while with solar energy, reach and save more money.Make solar energy and electricity really become the complementary green novel energy source that uses; 4, overall structure is simple, easy for installation, is not subjected to the geographical climate environment condition restriction, for the industrial and agricultural production large electricity consumer carries out energy-conservation technological transformation, reduces discharging and save money, provides a kind of economy, safe and reliable green clean energy resource.
Description of drawings
Fig. 1 is the structural representation of embodiment of the invention heat collecting module.
Fig. 2 is the structural representation of embodiment of the invention solar energy heat collector.
Fig. 3 is the local enlarged diagram of Fig. 2.
Fig. 4 is the structural representation of embodiment of the invention solar thermal power plants.
Fig. 5 is the structural representation of embodiment of the invention high temperature energy-storage device.
Fig. 6 is the structural representation of embodiment of the invention constant temperature steamer TRT.
Fig. 7 is the partial schematic diagram of embodiment of the invention heat collecting module.
Among the figure, big space vacuum heat collection pipe 1, heat-exchange tube 1-1, passage of heat 1-2, heat transmission fin 1-3, heat collecting module 2, header 3, union pipe 4, focus lamp 5, focus module 6, solar energy heat collector outlet temperature-sensitive element 7, energy storage canister temperature controller 8, energy storage circulation control valve 9, energy storage circulating pump 10, high temperature energy-storage jar 11, thermal insulating warm-keeping layer 11-1, rigid layer 11-2, heat-insulating material 11-3, shell 11-4, flow control valve 12, digital control computer control device 13, solar energy heat collector middle heat photosensitive elements 14, emptying intake valve 15, thermostatic tank temperature controller 16, thermostatic control valve 17, constant temperature pump 18, thermostatic tank 19, steam generator 19-1, steam turbine 20, steam turbine intake valve 20-1, generator 21, condenser 22, high-pressure circulation pump 23, drain pump 24, exhaust-valve 25, steam generator pressure instrument 28.
The specific embodiment
Referring to Fig. 1～Fig. 7, embodiment of the invention solar heat collection, energy storage device is connected and composed by solar energy heat collector and high temperature energy-storage device, heated accumulation of energy medium in solar energy heat collector (warm medium or cryogenic media in being generally, special case is oil) is transported to the energy that stores and be used as the heat generating in the high temperature energy-storage device.
Present embodiment heat collecting module 2 comprises several big space vacuum heat collection pipes 1 and a resistant to elevated temperatures header 3, described big space vacuum heat collection pipe 1 comprises outer tube and interior pipe, interior pipe employing band heat transmission fin 1-3(U type bend pipe) heat-exchange tube 1-1, the vacuum heat-preserving layer thickness of big space vacuum heat collection pipe 1 (between big space vacuum heat collection pipe 1 outer tube and the interior pipe along diametric distance) is more than ten times of tube thickness outside the vacuum heat collection pipe 1 of big space, each heat-exchange tube 1-1 and heat transmission fin 1-3 fit tightly for increasing heat-conducting area and improve exchange rate, each heat-exchange tube 1-1 is provided with passage of heat 1-2, the passage of heat 1-2 of each heat-exchange tube 1-1 is connected to heat-exchange tube 1-1 outlet by heat-exchange tube 1-1 entrance again through the U-shaped heat transmission fin 1-3 for increasing heat-conducting area in both sides, the heat-exchange tube 1-1 of the big space of several of each heat collecting module 2 vacuum heat collection pipe 1 be communicated with by the union pipe 4 of band heat-insulation layer is in parallel (the heat-exchange tube 1-1 entrance that described UNICOM in parallel refers to several big space vacuum heat collection pipes 1 all with inlet tube 41 UNICOMs of union pipe 4, the heat-exchange tube 1-1 of several big space vacuum heat collection pipes 1 outlet all with outlet 42 UNICOMs of union pipe 4, be with advancing with going out between several heat-exchange tubes 1-1, so that augmented flow), make the accumulation of energy medium absorb solar energy as much as possible and whenever just improve the one-level temperature through a heat collecting module 2 by several heat-exchange tubes 1-1 heat transmission fin 1-3 simultaneously, reach the purpose that heat collecting module 2 improves the accumulation of energy medium temperature step by step.Several big space vacuum heat collection pipes 1 are installed in and constitute a heat collecting module 2 on the header 3, and header 3 is provided with high-temperature-resistant thermal-insulation material 3-1.Big space vacuum heat collection pipe 1 adopts glass to make.
The described focus module 6 of present embodiment comprises that big space vacuum heat collection pipe 1 structure in focus lamp 5, big space vacuum heat collection pipe 1(and the above-mentioned heat collecting module 2 is identical) and resistant to elevated temperatures header 3; Focus lamp 5, big space vacuum heat collection pipe 1 are installed in (referring to Fig. 2) on the header 3.
Solar energy heat collector is connected by several union pipes 4 by several heat collecting modules 2, several focus module 6 and (refers to that the heat-exchange tube 1-1 of heat collecting module 2, the heat-exchange tube 1-1 of focus module 6 are communicated with by union pipe 4, constitute down together), wherein the heat-exchange tube 1-1 of the heat collecting module 2 of previous stage or focus module 6 is connected with the heat collecting module 2 of back one-level or the heat-exchange tube 1-1 of focus module 6 by union pipe 4, thereby constitutes a solar energy heat collector that heats step by step by the series connection of heat collecting module 2 and focus module 6.
As the special case of above-mentioned series connection heating, after can connecting successively by union pipe 4, several heat collecting modules 2 connect by the focus module 6 that union pipe 4 is connected successively with several again, and described several of present embodiment all refer to more than 2 or 2, are generally 2 ~ 5.
The big space of present embodiment vacuum heat collection pipe 1 and heat-exchange tube 1-1 thereof are the U font, the entrance outlet of the heat-exchange tube 1-1 of big space vacuum heat collection pipe 1 all is communicated with union pipe 4, so that the accumulation of energy medium in the union pipe 4 can absorb solar energy as far as possible by the U-shaped bend pipe of heat-exchange tube 1-1, improve the temperature of accumulation of energy medium step by step, under the situation that the sunlight heating is arranged, the accumulation of energy medium is more high the closer to solar energy heat collector outlet (this example is last focus module 6 outlet, referring to Fig. 2 upper end) temperature.
Present embodiment solar energy heat collector middle heat photosensitive elements 14 is arranged on the solar energy heat collector middle part, and special case is the exit that is located at last heat collecting module 2 that is cascaded; Solar energy heat collector outlet temperature-sensitive element 7 is located at the solar energy heat collector exit, and special case is the exit that is located at last focus module 6 that is cascaded.
The present invention solves the problems of the technologies described above the technical scheme that adopts and comprises a kind of solar thermal power plants, described solar thermal power plants comprises the solar heat collection, energy storage device, automaton, constant temperature steamer TRT, the heat energy that solar energy heat collector obtains is delivered to the high temperature energy-storage jar 11 of high temperature energy-storage device by union pipe 4, heat energy in the high temperature energy-storage jar 11 is delivered to the thermostatic tank 19 of constant temperature steamer TRT again, and the steam that steam generator 19-1 produces under the control and regulation of automaton is delivered to steam turbine 20, generator 21 carries out continuously, stable, controlled generating.
Present embodiment high temperature energy-storage device comprises high temperature energy-storage jar 11, energy storage circulation control valve 9, energy storage circulating pump 10, flow control valve 12, exhaust-valve 25, emptying intake valve 15, drain pump 24,10 imports of energy storage circulating pump are connected with 11 outlets of high temperature energy-storage jar, 10 outlets of energy storage circulating pump are connected with flow control valve 12 entrances, flow control valve 12 outlets are connected (Fig. 2 lower-left) with the solar energy heat collector entrance, energy storage circulation control valve 9 is installed between energy storage circulating pump 10 and the flow control valve 12, solar energy heat collector outlet (Fig. 2 is upper right) is by union pipe 4 and high temperature energy-storage jar 11(top) entrance is connected, emptying intake valve 15 is installed on the union pipe 4 of solar energy heat collector outlet, drain pump 24 outlets are connected with high temperature energy-storage jar 11, and drain pump 24 entrances are connected with the solar energy heat collector entrance by exhaust-valve 25.High temperature energy-storage jar 11 is provided with thermal insulating warm-keeping layer 11-1, rigid layer 11-2, heat-insulating material 11-3 and shell 11-4 from inside to outside.Present embodiment thermal insulating warm-keeping layer 11-1 adopts the asbestos pottery to make, and heat-insulating material 11-3 adopts rock wool.
The described constant temperature steamer of present embodiment TRT comprises constant temperature pump 18, thermostatic tank 19, steam generator 19-1, steam turbine intake valve 20-1, steam turbine 20, generator 21, condenser 22, high-pressure circulation pump 23, constant temperature pump 18 is connected with thermostatic tank 19, high temperature energy-storage jar 11, steam generator 19-1 in the thermostatic tank 19 is connected with steam turbine 20 by steam turbine intake valve 20-1, steam turbine 20 is connected with generator 21, condenser 22, condenser 22 is connected with high-pressure circulation pump 23, and high-pressure circulation pump 23 is connected with steam generator 19-1.
The described automaton of present embodiment comprises digital control computer control device 13, solar energy heat collector middle heat photosensitive elements 14, solar energy heat collector outlet temperature-sensitive element 7, energy storage canister temperature controller 8, thermostatic tank temperature controller 16, thermostatic control valve 17, steam generator pressure instrument 28, and thermostatic control valve 17 is located on the connecting line between high temperature energy-storage jar 11 and the thermostatic tank 19; Digital control computer control device 13 is electrically connected the operation of control electrical equipment by lead with solar energy heat collector middle heat photosensitive elements 14, solar energy heat collector outlet temperature-sensitive element 7, energy storage canister temperature controller 8, thermostatic tank temperature controller 16, energy storage circulation control valve 9, flow control valve 12, exhaust-valve 25, emptying intake valve 15, thermostatic control valve 17, energy storage circulating pump 10, constant temperature pump 18, high-pressure circulation pump 23, drain pump 24, steam turbine intake valve 20-1, steam generator pressure instrument 28.
The present invention is by the improvement of solar energy vacuum heat collecting structure, by adopting big space vacuum heat collection pipe 1 to compose in parallel heat collecting module 2, heat collecting module 2 is through improving heat-collecting temperature by focus module 6 again after the series connection repeatedly, make solar energy heat collector obtain a large amount of heat energy, and make it be in the hot operation state always, directly the accumulation of energy medium being heated to needs temperature and sends into high temperature energy-storage jar 11 to store, when the no sun or sunlight shakiness, by automaton (system), the heat energy storage stable and uniform is offered solar thermal power plants in an orderly manner; Realize continuous, even, controlled generating purpose.Solved the defective that uncontrollable, unstable, the no sun that occurs in the existing solar electrical energy generation does not namely have electricity by high temperature energy-storage, thereby made solar energy really become the green novel energy source that alternative mineral can generate electricity.
The present invention reduces heat energy loss by high temperature energy-storage jar 11, improves heat insulation effect effectively and extends working time, and makes the heat energy that obtains in setting-up time, sends electric energy continuously and stably for human lives's production demand.
Technical method that the present invention adopts is: 1, and at first organize the accumulation of energy rate-of flow big space vacuum heat collection pipe 1 and be unified into heat collecting module 2 according to single.2, calculate required heat energy by the accumulation of energy rate-of flow heat collecting module 2 is connected into huge heat collection body, the accumulation of energy medium of heat collection body outlet is heated to 200～250 ℃ of (solar energy heat collector middle heat photosensitive elements 14 detected temperature) intervals.3, make the vacuum heat-collecting temperature rise to 380～400 ℃ of the conditions of high temperature (temperature that 7 detections of solar energy heat collector outlet temperature-sensitive element obtain by focusing on cascaded structure again, can realize by structure, quantity, the size of adjusting heat collecting module 2 and focus module 6 as required), at this moment after accumulation of energy media set hot body is heated to high temperature, the accumulation of energy medium is sent into high temperature energy-storage jar 11 from the port of export by pipeline and is stored, in order to continuing to provide thermal source to solar thermal power plants.The big space of the present invention vacuum heat collection pipe 1 adopts glass to make, and realizes the high-temperature heat-gathering energy storage, has reduced the cost of investment of existing solar energy thermal-power-generating significantly.
The control method of solar thermal power plants of the present invention is: 1, at first according to selected Turbo-generator Set, working medium and service condition, determine thermostatic tank 19 temperature operation intervals and steam generator 19-1 pressure operation interval; 2, digital control computer control device 13 control solar heat collection, energy storage device work; 3, when energy storage canister temperature controller 8 detected temperatures are higher than thermostatic tank 19 design temperatures, thermostatic control valve 17 is opened, constant temperature pump 18 is opened, steam turbine intake valve 20-1 opens when steam generator pressure instrument 28 detected pressures rise to steam generator 19-1 operating pressure setting value, high-pressure circulation pump 23 is opened, and solar thermal power plants enters the continuous and stable electric generation running status; 4, when thermostatic tank temperature controller 16 detected temperatures reached thermostatic tank 19 temperature capping values, constant temperature pump 18, thermostatic control valve 17 were closed; When thermostatic tank temperature controller 16 detected temperatures drop near thermostatic tank 19 temperature preset lower limit, (can be a scope, when for example thermostatic tank temperature controller 16 detected temperatures are above 5～10 degrees centigrade of thermostatic tank 19 temperature preset lower limit), constant temperature pump 18, thermostatic control valve 17 are opened, and go round and begin again and realize steadily generating; 5, when energy storage canister temperature controller 8 detected temperatures drop to thermostatic tank 19 design temperature lower limits when following solar thermal power plants out of service, close the solar heat collection, energy storage device, close constant temperature steamer TRT (closing its each parts).
Described digital control computer control device 13 control solar heat collection, energy storage device job steps may further comprise the steps: when solar energy heat collector outlet temperature-sensitive element 7 detected temperatures surpass energy storage canister temperature controller 8 detected temperatures and reach the cycle sets temperature of solar heat collection, energy storage device, energy-accumulating medium in the digital control computer control device 13 control high temperature energy-storage jars 11 heats up by the solar energy heat collector circulation, energy storage circulation control valve 9 is opened, and energy storage circulating pump 10 starts; When solar energy heat collector outlet temperature-sensitive element 7 detected temperatures change when exceeding the output temperature scope that the solar heat collection, energy storage device sets, digital control computer control device 13 is regulated flow automatically by flow control valve 12, regulates and stable solar energy heat collector outlet temperature; When dropping to high temperature energy-storage jar 11 temperature that detect with energy storage canister temperature controller 8, solar energy heat collector outlet temperature-sensitive element 7 detected temperatures close the solar heat collection, energy storage device when identical.
Present embodiment is described closes solar heat collection, energy storage device step and comprises that energy storage circulation control valve 9 closes, energy storage circulating pump 10 cuts out, exhaust-valve 25, emptying intake valve 15 are opened, drain pump 24 starts, after trapped fuel in the solar energy heat collector sent into high temperature energy-storage jar 11, exhaust-valve 25, emptying intake valve 15, drain pump 24 are closed, and realize that waste heat takes full advantage of.
The cycle sets temperature of solar heat collection, energy storage device of the present invention is 200～250 degrees centigrade, 380～400 degrees centigrade of the output temperature scopes that the solar heat collection, energy storage device is set, high temperature energy-storage jar 11 design temperatures are 380～400 degrees centigrade, it is 150～200 degrees centigrade that thermostatic tank 19 is set operating temperature range, and steam generator 19-1 operating pressure sets value between 2～4 MPas.
The major function of solar energy heat collector middle heat photosensitive elements 14 of the present invention is to shift to an earlier date anticipation solar energy heat collector outlet temperature (solar energy heat collector outlet temperature-sensitive element 7 detected temperatures), improves the thermal efficiency and prevents the energy-accumulating medium carbonization simultaneously; When solar energy heat collector middle heat photosensitive elements 14 detected temperatures reach the cycle sets temperature (special case is 200 ℃) of solar heat collection, energy storage device when above, otherwise the every rising of solar energy heat collector middle heat photosensitive elements 14 detected temperatures is transferred big accumulation of energy rate-of flow 5% then to turn accumulation of energy rate-of flow 5%(down for 5 ℃ and is regulated by flow control valve 12, namely reach 205 ℃ and transfer big flow 5% during less than 210 ℃ when solar energy heat collector middle heat photosensitive elements 14 detected temperatures, reach 210 ℃ and transfer big flow 10%... during less than 215 ℃; When dropping to, solar energy heat collector middle heat photosensitive elements 14 detected temperatures are lower than 195 ℃ and turn flow 5% during greater than 190 ℃ down, be lower than 190 ℃ and turn flow 10%... during less than 185 ℃ down), stablize focusing heat collection body outlet temperature, improve energy-accumulating medium service life.
The present invention compared with prior art has the following advantages and effect: 1, the full glass vacuum heat collection pipe in big space has improved heat-collecting temperature and heat insulation effect, and the thermal power transfer utilization rate reaches more than 90%; 2, because heat collector is main the composition by the simple glass heat-collecting vacuum tube of manufacturing process, and the investment superiority of effectiveness is remarkable, with existing solar energy thermal-power-generating device ratio, can reduces investment and reach more than 50%; 3, whole-course automation control, energy storage are can also organically combine with the accumulation of energy of paddy electricity the main while with solar energy, reach and save more money.Make solar energy and electricity really become the complementary green novel energy source that uses; 4, overall structure is simple, easy for installation, is not subjected to the geographical climate environment condition restriction, for the industrial and agricultural production large electricity consumer carries out energy-conservation technological transformation, reduces discharging and save money, provides a kind of economy, safe and reliable green clean energy resource.
The simple deformation of the technology of the present invention feature or technical scheme and combination should be thought to fall into protection scope of the present invention.
Claims (10)
1. solar heat collection, energy storage device, it is characterized in that: the solar heat collection, energy storage device is connected and composed by solar energy heat collector and high temperature energy-storage device, described solar energy heat collector is by heat collecting module, focus module connects and composes by union pipe, heat collecting module comprises several big space vacuum heat collection pipes and a resistant to elevated temperatures header, described big space vacuum heat collection pipe comprises outer tube and interior pipe, interior pipe adopts the heat-exchange tube of band heat transmission fin, the vacuum heat-preserving layer thickness of big space vacuum heat collection pipe is outer more than ten times of tube thickness of big space vacuum heat collection pipe, heat-exchange tube and heat transmission fin fit tightly, heat-exchange tube is provided with passage of heat, the passage of heat of heat-exchange tube is connected to the heat-exchange tube outlet by the heat-exchange tube entrance again through the U-shaped heat transmission fin in both sides, and the heat-exchange tube of the big space of several of heat collecting module vacuum heat collection pipe is communicated with by union pipe is in parallel.
2. solar heat collection, energy storage device according to claim 1 is characterized in that: described focus module comprises focus lamp, big space vacuum heat collection pipe and resistant to elevated temperatures header, and focus lamp, big space vacuum heat collection pipe are installed on the header.
3. solar heat collection, energy storage device according to claim 1 and 2, it is characterized in that: described high temperature energy-storage device comprises the high temperature energy-storage jar, the energy storage circulation control valve, the energy storage circulating pump, flow control valve, exhaust-valve, the emptying intake valve, drain pump, the energy storage pump inlet is connected with the outlet of high temperature energy-storage jar, the energy storage circulating-pump outlet is connected with the Flow-rate adjustment valve inlet, the Flow-rate adjustment valve outlet port is connected with the solar energy heat collector entrance, the energy storage circulation control valve is installed between energy storage circulating pump and the flow control valve, the solar energy heat collector outlet is connected with high temperature energy-storage jar entrance, the emptying intake valve is installed on the union pipe of solar energy heat collector outlet, the drain pump outlet is connected with the high temperature energy-storage jar, and the drain pump entrance is connected with the solar energy heat collector entrance by exhaust-valve.
4. solar thermal power plants, it is characterized in that: described solar thermal power plants comprises automaton, constant temperature steamer TRT and claim 1 or 2 or 3 described solar heat collection, energy storage devices, described constant temperature steamer TRT comprises the constant temperature pump, thermostatic tank, steam generator, the steam turbine intake valve, steam turbine, generator, condenser, high-pressure circulation pump, constant temperature pump and thermostatic tank, the high temperature energy-storage jar connects, steam generator in the thermostatic tank is connected with steam turbine by the steam turbine intake valve, steam turbine and generator, condenser connects, condenser is connected with high-pressure circulation pump, high-pressure circulation pump is connected with steam generator, the heat energy that stores in the solar heat collection, energy storage device is delivered in the thermostatic tank of constant temperature steamer TRT, provide constant temperature steamer TRT hot power generation energy resource, automaton is used for controlling the solar heat collection, energy storage device, the work of constant temperature steamer TRT.
5. solar thermal power plants according to claim 4, it is characterized in that: described automaton comprises the digital control computer control device, solar energy heat collector middle heat photosensitive elements, solar energy heat collector outlet temperature-sensitive element, the energy storage canister temperature controller, the thermostatic tank temperature controller, thermostatic control valve, steam generator pressure instrument, thermostatic control valve is located on the connecting line between high temperature energy-storage jar and the thermostatic tank, and the digital control computer control device is by lead and solar energy heat collector middle heat photosensitive elements, solar energy heat collector outlet temperature-sensitive element, the energy storage canister temperature controller, the thermostatic tank temperature controller, the energy storage circulation control valve, flow control valve, exhaust-valve, the emptying intake valve, thermostatic control valve, the energy storage circulating pump, the constant temperature pump, high-pressure circulation pump, drain pump, the steam turbine intake valve, steam generator pressure instrument is electrically connected.
6. the control method of a claim 4 or 5 described solar thermal power plants, it is characterized in that may further comprise the steps: according to selected Turbo-generator Set, working medium and service condition, determine thermostatic tank temperature operation interval and steam generator pressure operation interval; The work of digital control computer control device control solar heat collection, energy storage device; When energy storage canister temperature controller detected temperatures is higher than the thermostatic tank design temperature, the thermostatic control opening of valves, the constant temperature pump is opened, steam turbine inlet open when steam generator pressure instrument detected pressures rises to steam generator operating pressure setting value, high-pressure circulation pump is opened, and solar thermal power plants enters the continuous and stable electric generation running status; When thermostatic tank temperature controller detected temperatures reached thermostatic tank temperature capping value, constant temperature pump, thermostatic control valve were closed; When thermostatic tank temperature controller detected temperatures dropped near thermostatic tank temperature preset lower limit, constant temperature pump, thermostatic control opening of valves went round and began again and realize steadily generating; When energy storage canister temperature controller detected temperatures drop to thermostatic tank design temperature lower limit when following solar thermal power plants out of service, close the solar heat collection, energy storage device, close constant temperature steamer TRT.
7. according to the control method of the described solar thermal power plants of claim 6, it is characterized in that: described digital control computer control device control solar heat collection, energy storage device job step may further comprise the steps: when solar energy heat collector outlet temperature-sensitive element detected temperatures surpasses energy storage canister temperature controller detected temperatures and reaches the cycle sets temperature of solar heat collection, energy storage device, energy-accumulating medium in the digital control computer control device control high temperature energy-storage jar heats up by the solar energy heat collector circulation, the energy storage circulation control valve is opened, and the energy storage circulating pump starts; When solar energy heat collector outlet temperature-sensitive element detected temperatures changes when exceeding the output temperature scope that the solar heat collection, energy storage device sets, the digital control computer control device is regulated flow automatically by flow control valve, regulates the solar energy heat collector outlet temperature; When dropping to the high temperature energy-storage jar temperature that detects with the energy storage canister temperature controller, solar energy heat collector outlet temperature-sensitive element detected temperatures closes the solar heat collection, energy storage device when identical.
8. according to the control method of the described solar thermal power plants of claim 6, it is characterized in that: the described solar heat collection, energy storage device step of closing comprises that the energy storage circulation control valve closes, the energy storage circulation pump, exhaust-valve, emptying INO, drain pump starts, after accumulation of energy medium in the solar energy heat collector sent into the high temperature energy-storage jar, exhaust-valve, emptying intake valve, drain pump were closed.
9. according to the control method of the described solar thermal power plants of claim 7, it is characterized in that: when solar energy heat collector middle heat photosensitive elements detected temperatures reaches the cycle sets temperature of solar heat collection, energy storage device when above, the every rising of solar energy heat collector middle heat photosensitive elements detected temperatures is transferred big accumulation of energy rate-of flows 5% for 5 ℃; When solar energy heat collector middle heat photosensitive elements detected temperatures drops to the cycle sets temperature of solar heat collection, energy storage device when following, the every decline of solar energy heat collector middle heat photosensitive elements detected temperatures is turned accumulation of energy rate-of flow 5% down for 5 ℃.
10. according to the control method of the described solar thermal power plants of claim 7, it is characterized in that: the cycle sets temperature of described solar heat collection, energy storage device is 200～250 degrees centigrade, 380～400 degrees centigrade of the output temperature scopes that the solar heat collection, energy storage device is set, high temperature energy-storage jar design temperature is 380～400 degrees centigrade, it is 150～200 degrees centigrade that thermostatic tank is set operating temperature range, and the steam generator operating pressure sets value between 2～4 MPas.
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