CN107401488A - All-weather solar electricity-generating method and system based on whole operation with pressure - Google Patents
All-weather solar electricity-generating method and system based on whole operation with pressure Download PDFInfo
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- CN107401488A CN107401488A CN201710576955.5A CN201710576955A CN107401488A CN 107401488 A CN107401488 A CN 107401488A CN 201710576955 A CN201710576955 A CN 201710576955A CN 107401488 A CN107401488 A CN 107401488A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/10—Details of absorbing elements characterised by the absorbing material
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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
- Y02E10/44—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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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of all-weather solar electricity-generating method and system based on whole operation with pressure, the system includes solar energy heat-collection field, heat accumulation thermal desorption system and steam generating system；Solar energy heat-collection field includes solar thermal collector, cold heat transfer media main pipe and high-temperature heat-transfer medium main pipe；Heat accumulation thermal desorption system and steam generating system are connected in parallel between cold heat transfer media main pipe and high-temperature heat-transfer medium main pipe；The top packing area being sequentially communicated, more than one intermediate filler area, bottom filling area are provided with the heat storage can body of heat accumulation thermal desorption system, each packing area is provided with corresponding entrance switching valve.The double-circuit system that this method is separated using heat transfer with heat accumulation, heat transfer medium cyclic absorption solar energy in solar energy heat-collection field, exchanged heat in heat accumulation thermal desorption system with energy-accumulating medium to store or obtain heat energy, steam is produced in steam generating system to be generated electricity, heat accumulation exothermal effect and generating efficiency are improved as heat transfer medium using compressed gas medium simultaneously.
Description
Technical field
The present invention relates to solar heat power technology, particularly relates to a kind of all-weather solar hair based on whole operation with pressure
Method for electrically and system.
Background technology
Solar energy thermal-power-generating, also it is focus type solar energy generating (Concentrating Solar Power, abbreviation
CSP), it is that solar energy direct light is gathered together in a manner of focusing on a large amount of speculums, heating working medium, produces HTHP
Steam, by steam drive steam turbine power generation.
Currently, solar energy thermal-power-generating is mainly divided into according to solar energy acquisition mode：Solar groove type generates electricity, solar column
Formula heat generates electricity, solar energy dish-style heat generates electricity.1) trough system is that sunlight is focused on into tubulose using parabolic cylinder slot type speculum
Receiver on, and by pipe working medium heating produce steam, promote conventional steam turbine power generation.2) tower system is using numerous
Heliostat, by solar heat radiation reflection to being placed on the high temperature heat collector at the top of high tower, heating working medium produces superheated steam, or
Directly heat the water in heat collector and produce superheated steam, driving steam turbine generating set generates electricity.3) disk system is gathered using curved surface
Light reflection mirror, incident sunlight is gathered in focal point, heats heat absorption working medium in focal point, drive heat engine, realize photoelectric conversion.
The heat transfer medium of solar energy thermal-power-generating, typically using fused salt, conduction oil or air.Wherein, fused salt is typically by all
Mixture such as potassium nitrate, sodium nitrate and sodium chloride is formed, and its feature is cheap, and heat-conductive characteristic is good, Ke Yi
It is stored under normal pressure in tun while carries out heat accumulation as energy-accumulating medium.However, because fused salt has relatively high solidification
Point (120~240 DEG C), the pipeline flowed through needs to be preheated when system starts, so as to cause extra energy expenditure；
In addition, fused salt material requires high to the corrosion resistance of tubing, so as to increase the use cost of tubing.Using conduction oil as biography
During thermal medium, it is transported in follow-up system and is utilized after conduction oil absorption solar thermal energy；When carrying out heat accumulation, conduction oil is made simultaneously
It is stored into for heat-storage medium in one or more heat conduction oil tanks, when needing to carry out heat release, by the high-temperature heat-conductive in heat conduction oil tank
Oil is delivered directly to follow-up system and utilized.However, current conduction oil operating temperature must be controlled on 400 degrees Celsius of left sides
The right side, beyond this temperature will cause heat conduction oil-breaking, viscosity improve and heat transfer efficiency reduce the problems such as, so as to limit too
The operating temperature and generating efficiency of positive energy thermal electric generator.It is specifically that low pressure is empty using scheme of the hot-air as heat transfer medium
Gas is heated first in solar collector, is sent to heat recovery steam production system (Heat Recovery Steam
Generating, abbreviation HRSG) in heating water produce steam, subsequent steam, which is sent in steam turbine, to do work, drive generator hair
Electricity.However, the shortcomings that this scheme is, low-pressure air thermal capacitance is smaller, and convection transfer rate is low, therefore causes empty in pipeline
Gas carries the ability of heat, and the flow velocity of air is too high, and integrated piping crushing is bigger.
Due to by round the clock, season, the factor such as weather influenceed, the heat energy of solar energy heat-collection field collection is not only to be interrupted but also not
Stable.In order to ensure the stability of solar energy thermal-power-generating and continuation, fossil fuel engine can be added in electricity generation system,
When sun photo-labile, supplemented and generated electricity by fossil fuel engine.Also have using the storage in parallel with solar energy heat-collection field
Hot systems, heat is stored in solar radiation energy abundance, heat is discharged in solar radiation energy deficiency and is generated electricity.It is existing
Hold over system typically carry out heat accumulation by the way of the heat transfer mediums such as fused salt, conduction oil store in storage tank；Because gas passes
The thermal capacitance of thermal medium is low, and heat storage capacity is poor, therefore this mode is not suitable for gaseous heat transfer medium.
In order to concentrate heat energy, generating efficiency is improved, the plane skylight/heat collector for generally receiving sunshine uses modularization cloth
Office, it is connected to each other by the pipeline of complexity, in systems during each group solar thermal collector uneven heating, heat transfer medium can be brought
Resistance in pipe-line system is unbalance, the problem of causing bias current, stop.Because gas working medium heat-transfer capability is poor, flow velocity is too high,
The reasons such as heat collecting pipeline is long, above mentioned problem are particularly prominent in the groove type solar heat collecting field for use air as heat transfer medium
Go out, had a strong impact on the heat transfer efficiency of collecting system.
The content of the invention
It is an object of the invention to provide a kind of heat accumulation efficiency high of conducting heat, can realize round-the-clock generating based on whole band
Press the all-weather solar electricity-generating method and system of operation.
To achieve the above object, the all-weather solar electricity-generating method provided by the present invention based on whole operation with pressure,
Applied in the solar power system including solar energy heat-collection field, heat accumulation thermal desorption system and steam generating system, including it is as follows
Step：1) solar energy heat-collection field absorbs solar energy and heats cold heat transfer media, and gained high-temperature heat-transfer medium is transported to steam hair
Generated electricity and/or be transported to exchange heat with energy-accumulating medium in heat accumulation thermal desorption system in electric system and carry out heat accumulation；2) by the sun
The high-temperature heat-transfer medium of energy heat collecting field output and the high-temperature heat-transfer medium obtained via the heat exchange heating of heat accumulation thermal desorption system are simultaneously defeated
It is sent to steam generating system to be generated electricity, or the high-temperature heat-transfer medium that heat accumulation thermal desorption system heat release obtains individually is transported to steaming
Generated electricity in vapour electricity generation system；3) high-temperature heat-transfer medium discharges the cryogenic heat transfer obtained after heat energy in steam generating system and is situated between
Matter return solar energy heat-collection field carries out thermal-arrest again and/or return heat accumulation thermal desorption system carries out heat exchange heating again；Above-mentioned steps
In, the steam generating system heats production steam using high-temperature heat-transfer medium and generated electricity；The heat transfer medium is calmed the anger for band
Body medium, the compressed gas medium include the one or more in air, carbon dioxide, nitrogen, helium, methane, vapor.
The circulating pressure of the compressed gas medium is preferably 0.1Mpa~10MPa, more preferably 0.1Mpa~3MPa.
Preferably, the heat transfer medium is the gas medium for being mixed with solia particle, and the particle diameter of the solia particle is chosen as
0.01 μm~10mm, preferably 1 μm~1mm, solia particle can be formed more steady with gas medium in the range of the preferable particle size
Fixed gas-solid mixture, is advantageous to long distance delivery, can substantially reduce particle deposition, reduces the pressure loss and to pipe-line system
Abrasion, the especially very long trough type solar heat-collector of thermal-collecting tube, using less particle diameter advantageously.The solia particle is
Without phase-change material composition without phase transformation particulate, or to form capsule shell by solid heat conductive material, forming glue by phase-change material
The phase transformation capsule particulate of capsule filler.The no phase transformation particulate is preferably factory's dust, such as power plant's pot of dust pelletizing system trapping
Converter fly ash, to realize the twice laid of dust.In diabatic process, the heat transfer effect of gas medium can be improved by adding solia particle
Rate.When using the capsule particulate for including phase-change material, capsule particulate it is heated with to the cold when undergo phase transition process, the phase transformation in it
Material is discharged or absorbed heat energy by phase transformation actively to improve augmentation of heat transfer coefficient, is reduced heat transfer area, is reduced system pipes track forces
Very little and follow-up boiler heat exchange equipment size, reduce cost of investment.
Preferably, when the heat accumulation thermal desorption system carries out heat accumulation, heat transfer medium flows through energy-accumulating medium from top to bottom；The storage
When exothermic heat system carries out heat release, heat transfer medium flows through energy-accumulating medium from the bottom up.Because heat-transfer medium temperature is higher, in pressure
On the premise of constant, density is typically also bigger, and by above-mentioned flow direction, during heat accumulation, heat transfer medium is small in upper temp high density, bottom
Temperature low-density is big, is advantageous to the top-down flowing of heat transfer medium；Conversely, during heat release, heat transfer medium is highly dense in upper temp
Spend small, temperature of lower low-density is big, is advantageous to the flowing of heat transfer medium from bottom to top.
Preferably, the heat accumulation thermal desorption system is provided with multiple filler subregions, and when carrying out heat accumulation, it is same that heat transfer medium presses subregion
When or successively pass through each filler subregion carry out heat accumulation；When carrying out heat release, heat transfer medium presses subregion simultaneously or successively by each filler
Subregion obtains heat.For the heat accumulation tank body of not subregion, heat transfer medium enters from one end, is flowed out from the other end, along stream during heat accumulation
It is gradually reduced to temperature, the heat accumulating quick heating first heated, the heat accumulating heating heated afterwards is slow；Edge flows to temperature during heat release
Gradually rise, the heat accumulating cooling of first heat release is fast, and the heat accumulating cooling of rear heat release is slow, thus causes hold over system heat accumulation to be put
The problems such as hot total amount is relatively low, heat conduction efficiency declines.And when using the heat exchange of multiple filler subregions, it can flexibly realize a variety of subregions
Heat exchange pattern, such as enter successively from different subregions, flowed out from last subregion；And for example enter simultaneously from the subregion of odd indexed
(enter from the outflow of the subregion of even number sequence number from the first subregion, the second subregion goes out, while from the 3rd subregion enters, the 4th subregion goes out),
Or enter from even number subregion, odd number subregion goes out；And for example enter respectively from one end of each subregion, from the other end stream of same subregion
Go out, etc..Optimal subregion heat exchange pattern can be selected during use according to actual conditions, to obtain optimal heat accumulation exothermal effect.
Preferably, the heat accumulation thermal desorption system includes heat accumulation tank body, according to loading energy-accumulating medium in the heat storage can body
Position different demarcation is the top packing area, more than one intermediate filler area and bottom filling area being sequentially communicated；The storage
When carrying out heat accumulation, the high-temperature heat-transfer medium from solar energy heat-collection field enters exothermic heat system at the top of heat accumulation tank body first
Enter, pass sequentially through top packing area, each intermediate filler area and bottom filling area (top, bottom are relative bearing in the present invention,
The corresponding intrument left and right ends when device traverse), the cold heat transfer media obtained through heat exchange cooling flows from the bottom of heat accumulation tank body
Solar energy heat-collection field is returned after going out；When top packing area, temperature is increased to setting value, high-temperature heat-transfer medium is switched to from top
First intermediate filler area below packing area enters, and passes sequentially through first intermediate filler area and each centre below is filled out
Expect area and bottom filling area, the cold heat transfer media obtained through heat exchange cooling returns to solar energy after the outflow of the bottom of heat accumulation tank body
Heat collecting field；When first intermediate filler area temperature is increased to setting value, high-temperature heat-transfer medium switches to be filled out from second centre
Expect that area enters, pass sequentially through second intermediate filler area and each intermediate filler area and bottom filling area below, through heat exchange
The obtained cold heat transfer media that cools returns to solar energy heat-collection field after the outflow of the bottom of heat accumulation tank body；The rest may be inferred, until high
Warm heat transfer medium is switched to from the entrance of an intermediate filler area of bottom, is flowed out from bottom filling area, and make bottom filling area
Temperature be increased to setting value, the heat accumulation of heat accumulation tank body is completed, through the cold heat transfer media that heat exchange cooling obtains from heat accumulation tank body
Bottom outflow after return to solar energy heat-collection field.The program effectively avoids energy-accumulating medium part mistake by the way of successively heat accumulation
Heat, and energy storage dead band is reduced, improve the heat accumulation efficiency of heat accumulation thermal desorption system.
Preferably, for the heat accumulation thermal desorption system when carrying out heat release, the cold heat transfer media from steam generating system is first
First enter from the bottom of heat accumulation tank body, pass sequentially through bottom filling area, each intermediate filler area and top packing area, heated up through heat exchange
Obtained high-temperature heat-transfer medium enters steam generating system after the outflow of the top of heat accumulation tank body；When bottom filling area temperature reduces
During to setting value, cold heat transfer media switches to be entered from first intermediate filler area above bottom filling area, is passed sequentially through
First intermediate filler area and its each the intermediate filler area and top packing area of top, the high temperature heat transfer obtained through heat exchange heating
Medium enters steam generating system after the outflow of the top of heat accumulation tank body；When first intermediate filler area temperature is reduced to setting value
When, cold heat transfer media switches to be entered from second intermediate filler area, passes sequentially through second intermediate filler area and thereon
Each the intermediate filler area and top packing area of side, the high-temperature heat-transfer medium obtained through heat exchange heating flow out from the top of heat accumulation tank body
Enter steam generating system afterwards；The rest may be inferred, until cold heat transfer media switches to enter from an intermediate filler area of the top
Enter, flowed out from top packing area, and the temperature of top packing area is increased to setting value, the heat release of heat accumulation tank body is completed, through changing
The high-temperature heat-transfer medium that heat heating obtains enters steam generating system after the outflow of the top of heat accumulation tank body.The program is using successively
The mode of heat release, the exothermal efficiency of heat accumulation thermal desorption system is effectively increased, realize the speed responded when system changes to different load
Degree and effect.
Invention also provides a kind of all-weather solar electricity generation system based on whole operation with pressure, including solar energy
Heat collecting field, heat accumulation thermal desorption system, steam generating system, the first pressue device and the second pressue device；The solar energy heat-collection field
Passed including the cold heat transfer media main pipe as cold heat transfer media input and as the high temperature of high-temperature heat-transfer medium output end
Thermal medium main pipe；The heat accumulation thermal desorption system and steam generating system are arranged in parallel at cold heat transfer media main pipe and high temperature heat transfer
Between medium main pipe；The heat accumulation thermal desorption system includes heat accumulation tank body, and the heat storage can body is interior according to the position for loading energy-accumulating medium
It is the top packing area, more than one intermediate filler area and bottom filling area being sequentially communicated to put different demarcation；Wherein top
Packing area is connected by top switching valve with high-temperature heat-transfer medium main pipe, and bottom filling area passes through bottom switching valve and cryogenic heat transfer
Medium main pipe is connected, and each intermediate filler area is connected by corresponding each middle switching valve with middle area connecting tube；Institute
The one end for stating middle area connecting tube is connected by middle area high temperature switching valve with high-temperature heat-transfer medium main pipe, the middle area connection
The other end of pipe is connected by middle low temp area switching valve with cold heat transfer media main pipe；First pressue device is arranged on low
The pipeline section that warm heat transfer medium main pipe corresponds between heat accumulation thermal desorption system and solar energy heat-collection field；Second pressue device is set
In the pipeline section that cold heat transfer media main pipe corresponds between heat accumulation thermal desorption system and steam generating system.The first pressurization dress
Put, the second pressue device by being pressurizeed to heat transfer medium to supplement the pressure that it loses in flow process.
Preferably, the steam generating system includes waste heat boiler, steam turbine, generator, condensing unit and deoxygenation backheat
Device；The heated side input of the waste heat boiler is connected to high-temperature heat-transfer medium main pipe, the heated side output of the waste heat boiler
End is connected to cold heat transfer media main pipe；The water side input of the waste heat boiler by water pump be connected to deoxygenation regenerator to
Water output end, the water side output end of the waste heat boiler are connected with the Boiler Steam input of steam turbine；The steam turbine it is weary
Vapour output end is connected with the hot-side input end of condensing unit, and the pumping output end of the steam turbine and the pumping of deoxygenation regenerator are defeated
Enter end to be connected, the power output shaft of the steam turbine is connected with generator；The hot side output end of the condensing unit is returned with deoxygenation
The backwater input port of hot device is connected；The waste heat boiler is to be integrated with fuel heating, the integrated type boiler of heat transfer medium heat exchange function
Stove, increase heat transfer medium heat exchange preferably on the basis of existing subcritical, the overcritical or ultra-supercritical boiler in coal-burning power plant
The integrated form boiler of steam path is produced, the manifold type that solar energy and coal-burning power plant can be achieved generates electricity.
Preferably, the steam generating system also includes reheater, and the heated side input of the reheater is connected to height
Warm heat transfer medium main pipe, the heated side output end of the reheater are connected to cold heat transfer media main pipe；The steaming of the reheater
Vapour side input is connected to the reheated steam output end of steam turbine, and the steam side output end of the reheater is connected to steam turbine
Reheated steam input.
Preferably, the solar energy heat-collection field includes some solar thermal collectors in vertically and horizontally array arrangement, each vertical
Each solar thermal collector in nematic shares the thermal-collecting tube of a segmentation series connection insertion, the input and low temperature of each thermal-collecting tube
Heat transfer medium main pipe is connected, and the output end of each thermal-collecting tube is connected with high-temperature heat-transfer medium main pipe；Between adjacent two thermal-collecting tubes
Pass through some spaced distribution header lateral direction penetratings.The program uses distribution header to solve gaseous heat transfer medium in complexity
Pipe-line system in resistance unbalance the problem of causing bias current, cutout, heat transfer medium enter after distribution header change it is original straight
The flow direction of line style, realize intersection flow direction of the heat transfer medium between each heat transfer unit so that overall solar energy heat-collection field becomes
In being heated evenly, pressure-control valve is further set respectively on each thermal-collecting tube, adjusts solar energy heat-collection field air-flow stream in real time
Amount distribution, realizes the reliable and stable operation of total system.
Preferably, the thermal-collecting tube is preferably with inner fin or the thermal-collecting tube of interior extension fin.Inner fin can be straight
Fin, triangular fin, annular fin etc.；Can also be using prefabricated fin shape metal grate be fastened in thermal-collecting tube etc.
With conversion pattern.Compared with the thermal-collecting tube of straight tube, bellows or screw thread tubular construction, the thermal-arrest with inner fin or interior extension fin
The heat transfer area of pipe is bigger, improves heat transfer efficiency, realizes that passive facilitation conducts heat.
Preferably, using the gas medium active augmentation of heat transfer for being mixed with solia particle, while using wing in thermal-collecting tube setting
The mode passive facilitation heat transfer of piece, two ways are combined, and flowing of the gaseous heat transfer medium in thermal-collecting tube can be greatly improved
Heat transfer coefficient so that when the change of thermal-collecting tube caliber size is little, enough enough realize ensures foot in the case of gas economic velocity
Enough heat transfer efficiencys, SR and pipe wear are reduced, and then greatly reduce system cost.
Preferably, the energy-accumulating medium is high specific heat solid material or phase-change heat-storage material, and its shape can be spherical, post
Shape, netted, rhombus or irregular shape etc., it is deposited in heat-storing device and forms loose structure.It is highly preferred that the high specific heat
Solid material is the one or more in quartz sand, iron sand, cast iron, iron ore, cobblestone；The phase-change heat-storage material includes solid
The shell that body Heat Conduction Material is formed and the phase-change material filler being encapsulated in shell.
Beneficial effects of the present invention are as follows：
1) use heat transfer medium of the gas as whole system, have high temperature resistant, it is corrosion-free and cheap, safe and non-toxic, obtain
Simple characteristic is taken, system Construction cost and operation expense can be greatly reduced.Gaseous heat transfer medium is with pressure to improve density,
Improve ability and heat transfer efficiency that gas carries heat.
2) double-circuit system separated using heat transfer with heat accumulation, uses heat transfer medium cyclic absorption in solar energy heat-collection field
Solar energy, exchanged heat in heat accumulation thermal desorption system by energy-accumulating medium and heat transfer medium to store or discharge heat energy.Cross herein
Cheng Zhong, energy-accumulating medium only carries out heat accumulation heat release, without circulating heat transfer；Heat transfer medium only carries out circulating heat transfer, without heat accumulation
Heat release, energy-accumulating medium and heat transfer medium separation operation, Each performs its own functions, thus energy storage and heat transfer can respectively from high-efficiency energy-storage medium and
Efficient heat transfer medium, there is the advantages of heat accumulation and efficient, reliable exothermic process.
3) total system uses reliable system allocation plan, during solar heat energy abundance, is circulated by heat transfer medium efficient
Heat accumulation；During solar heat energy deficiency, used by heat transfer medium circulation come efficient heat release for steam generating system；In extreme case
Under, it can also be heated by burning fuel, ensure round-the-clock generating.
Brief description of the drawings
Fig. 1 is the general structure frame of the all-weather solar electricity generation system provided by the present invention based on whole operation with pressure
Figure.
Fig. 2 is the process schematic representation of solar power system in Fig. 1.
Fig. 3 is the schematic cross-section of thermal-collecting tube in Fig. 2.
Fig. 4 is that the judgement flow of the all-weather solar electricity-generating method provided by the present invention based on whole operation with pressure is shown
It is intended to.
Wherein：Solar energy heat-collection field 100, cold heat transfer media main pipe 101, high-temperature heat-transfer medium main pipe 102, standby other pipe
103rd, it is distributed header 104, solar thermal collector 105, thermal-collecting tube 106, pressure-control valve 107, the first standby switching valve 108, the
Two standby switching valves 109, glass bushing 110, metal inner pipe 111, inner fin 112, heat accumulation thermal desorption system 200, heat accumulation tank body
201st, middle switching valve 202 (including 202a, 202b, 202c), top switching valve 203, bottom switching valve 204, middle area high temperature
Switching valve 205, middle low temp area switching valve 206, middle area connecting tube 207, heat accumulation transfer valve 208, thermal-arrest return to valve 209, hair
Electric transfer valve 210, top packing area 211, intermediate filler area 212 (including 212a, 212b, 212c), bottom filling area 213, steaming
Vapour electricity generation system 300, waste heat boiler 301, reheater 302, steam turbine 303, condensing unit 304, deoxygenation regenerator 305, water pump
306th, generator 307, gas supplement entrance 308, boiler oil entrance 309, boiler replenishing water mouth 310, the first pressue device 400,
Second pressue device 500
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, the all-weather solar electricity generation system provided by the present invention based on whole operation with pressure, including
Solar energy heat-collection field 100, heat accumulation thermal desorption system 200, steam generating system 300, the first pressue device 400 and the second pressue device
500.Solar energy heat-collection field 100 is included as the cold heat transfer media main pipe 101 of cold heat transfer media input and as high temperature
The high-temperature heat-transfer medium main pipe 102 of heat transfer medium output end.Heat accumulation thermal desorption system 200 and steam generating system 300 are arranged in parallel
Between cold heat transfer media main pipe 101 and high-temperature heat-transfer medium main pipe 102.
Solar energy heat-collection field 100 includes some solar thermal collectors 105 in vertically and horizontally array arrangement, in each longitudinal row
Each solar thermal collector 105 share one segmentation series connection insertion thermal-collecting tube 106, the input of each thermal-collecting tube 106 with
Cold heat transfer media main pipe 101 is connected, and the output end of each thermal-collecting tube 106 is connected with high-temperature heat-transfer medium main pipe 102.Adjacent two
Pass through some spaced distribution lateral direction penetratings of header 104 between root thermal-collecting tube 106.The low temperature of solar energy heat-collection field 100 passes
Standby other pipe 103 is provided between thermal medium input and high-temperature heat-transfer medium output end, is provided with the first standby switching
Valve 108, the second standby switching valve 109, standby other pipe 103 add the flexibility of pipe-line system, blown available for device or pipeline
Sweep, heat transfer medium backflow etc..A pressure-control valve 107 is respectively arranged with each thermal-collecting tube 106, adjusts total system in real time
Air flow rate is distributed, and realizes the reliable and stable operation of total system.In addition, solar energy heat-collection field 100 is overall in parallel using reversed return type
Arrangement, to reduce droop loss of the heat transfer medium in the circulatory system.The heat transfer medium of solar energy heat-collection field 100 is compressed gas
Medium, wherein being mixed with solia particle, the solia particle is to form capsule shell by solid heat conductive material, form glue by phase-change material
The phase transformation capsule particulate of capsule filler.As shown in figure 3, thermal-collecting tube 106 includes glass bushing 110 and metal inner pipe 111, in metal
Inner fin 112 is provided with the inwall of pipe 111.
Heat accumulation thermal desorption system 200 includes at least one heat storage can, can carry out each heat storage can when using multiple heat storage cans
Connection in series-parallel is combined, and each heat storage can is respectively adopted method provided by the invention and carries out heat accumulation, heat release again.The heat storage can includes heat accumulation
Tank body 201, the inner chamber of heat accumulation tank body 201 are the top packing area being sequentially communicated according to the position different demarcation for loading energy-accumulating medium
211st, intermediate filler area 212 (including 212a, 212b and 212c) and bottom filling area 213.Wherein top packing area 211 is logical
Cross top switching valve 203 with high-temperature heat-transfer medium main pipe 102 to be connected, bottom filling area 213 passes through bottom switching valve 204 and low temperature
Heat transfer medium main pipe 101 is connected, each intermediate filler area 212 by corresponding each middle switching valve 202 (including
202a, 202b, 202c) it is connected with middle area connecting tube 207.One end of middle area connecting tube 207 is switched by middle area high temperature
Valve 205 is connected with high-temperature heat-transfer medium main pipe 102, and the other end of middle area connecting tube 207 passes through middle low temp area switching valve 206
It is connected with cold heat transfer media main pipe 101.Energy-accumulating medium is high specific heat solid material or phase-change heat-storage material, is deposited in heat accumulation dress
Put and loose structure is formed in 201.High specific heat solid material can use one in quartz sand, iron sand, cast iron, iron ore, cobblestone
Kind is a variety of.The phase-change material filling that phase-change heat-storage material includes the solid heat conductive material shell formed and is encapsulated in shell
Thing.
Steam generating system 300 includes waste heat boiler 301, reheater 302, steam turbine 303, generator 307, condensing unit
304 and deoxygenation regenerator 305.Waste heat boiler 301 is to be integrated with the integrated form boiler of fuel heating function, is integrated with it and is used for
The burner of heating is aided in, and is provided with boiler oil entrance 309 and exhanst gas outlet.The heated side input of waste heat boiler 301
End is connected to high-temperature heat-transfer medium main pipe 102, and the heated side output end of waste heat boiler 301 is connected to cold heat transfer media main pipe
101.The water side input of waste heat boiler 301 is connected to the feedwater output end of deoxygenation regenerator 305, waste heat pot by water pump 306
The water side output end of stove 301 is connected with the Boiler Steam input of steam turbine 303.The exhaust steam output end of steam turbine 303 and condensation
The hot-side input end of device 304 is connected, and the pumping output end of steam turbine 303 is connected with the pumping input of deoxygenation regenerator 305,
The power output shaft of steam turbine 303 is connected with generator 307.The hot side output end of condensing unit 304 and deoxygenation regenerator 305
Backwater input port is connected.The cold side of condensing unit 304 is led to exhaust steam of the cold water to hot side and cooled down, and deoxygenation regenerator 305 is also set
It is equipped with boiler replenishing water mouth 310.The heated side input of reheater 302 is connected to high-temperature heat-transfer medium main pipe 102, reheater 302
Heated side output end be connected to cold heat transfer media main pipe 101.The steam side input of reheater 302 is connected to steam turbine
303 reheated steam output end, the steam side output end of reheater 302 are connected to the reheated steam input of steam turbine 303.
First pressue device 400, thermal-arrest return valve 209 are arranged on cold heat transfer media main pipe 101 and correspond to heat accumulation heat release
On pipeline section between system 200 and solar energy heat-collection field 100.Second pressue device 500 is arranged on cold heat transfer media main pipe 101
Corresponding on the pipeline section between heat accumulation thermal desorption system 200 and steam generating system 300, the arrival end of the second pressue device 500 is set
It is equipped with gas supplement entrance 308.Heat accumulation transfer valve 208, generating transfer valve 210 are separately positioned on high-temperature heat-transfer medium main pipe 102
Between solar energy heat-collection field 100 and heat accumulation thermal desorption system 200, between heat accumulation thermal desorption system 200 and steam generating system 300
On pipeline section.Heat accumulation transfer valve 208, thermal-arrest return to valve 209, generating transfer valve 210 switches over according to requirements of process.
Heat storage can, the outer surface of high-temperature heat-transfer medium main pipe 102 are wrapped up using high heat preservation performance material, reduce thermal losses.
As shown in figure 4, invention also provides the method to be generated electricity using above-mentioned solar power system, including such as
Lower step：
1) solar energy heat-collection field 100 absorbs solar energy and heats cold heat transfer media, and gained high-temperature heat-transfer medium is transported to
Generated electricity and/or be transported in steam generating system 300 to exchange heat with energy-accumulating medium in heat accumulation thermal desorption system 200 and carry out heat accumulation.
It is 150 DEG C~350 DEG C that cold heat transfer media, which enters the temperature of solar energy heat-collection field 100, high-temperature heat-transfer medium outflow solar energy heating
100 temperature of field are 200 DEG C~800 DEG C；Heat transfer medium system circulation pressure is 0.1Mpa~3MPa.
2) high-temperature heat-transfer medium that solar energy heat-collection field 100 exports via the heat exchange heating of heat accumulation thermal desorption system 200 with obtaining
High-temperature heat-transfer medium be transported to steam generating system 300 simultaneously and generated electricity, or individually by the heat release of heat accumulation thermal desorption system 200
Obtained high-temperature heat-transfer medium is transported in steam generating system 300 and generated electricity, and is obtained after high-temperature heat-transfer medium release heat energy
Cold heat transfer media return to that solar energy heat-collection field 100 carries out thermal-arrest again and/or return heat accumulation thermal desorption system 200 is carried out again
Heat exchange heating.
3) in step 1), step 2), the steam generating system 300 heats production steam using high-temperature heat-transfer medium and carried out
Generate electricity；
Specifically, this method selects heat accumulation, heat release or generating according to following determination strategy：
1) determine whether illumination condition, if non-illuminated conditions and steam generating system 300 there are power generation needs, put by heat accumulation
The heat release of hot systems 200 stands alone as the heat supply of steam generating system 300.
If 2) there is illumination condition, and height of the steam generating system 300 without thermal demand, the then output of solar energy heat-collection field 100
Warm heat transfer medium fully enters heat accumulation thermal desorption system 200 and carries out heat accumulation.
If 3) there is illumination condition, and steam generating system 300 has thermal demand, then to the thermal-arrest of solar energy heat-collection field 100
Measure and contrasted with the thermal demand amount of steam generating system 300, entered 4), 5) or 6) according to comparative result.
4) if heat-collecting capacity is more than thermal demand, meet steam in the high-temperature heat-transfer medium that solar energy heat-collection field 100 exports
The part of the demand of electricity generation system 300 is transported to steam generating system 300 and generated electricity, and the part exceeded is delivered to heat accumulation heat release
System 200 carries out heat accumulation.
If 5) heat-collecting capacity is equal to thermal demand, the high-temperature heat-transfer medium that solar energy heat-collection field 100 exports fully enters steaming
Vapour electricity generation system 300 is generated electricity.
If 6) heat-collecting capacity is less than thermal demand, solar energy heat-collection field 100 is heated into obtained high-temperature heat-transfer medium and storage
Exothermic heat system 200, which exchanges heat, obtained high-temperature heat-transfer medium while to be inputted steam generating system 300 and is generated electricity.
It is as follows that heat accumulation thermal desorption system 200 carries out heat accumulation, the concrete operation step of heat release：
For heat accumulation thermal desorption system 200 when carrying out heat accumulation, the high-temperature heat-transfer medium from solar energy heat-collection field 100 is first from storage
The top of hot tank body 201 enters, and passes sequentially through top packing area 211, intermediate filler area 212a~212c and bottom filling area
213, the cold heat transfer media obtained through heat exchange cooling returns to solar energy heat-collection field 100 after the outflow of the bottom of heat accumulation tank body 201.
When top packing area 211, temperature is increased to setting value, high-temperature heat-transfer medium switches to first from the lower section of top packing area 211
Individual intermediate filler area 212a enters, and passes sequentially through intermediate filler area 212a, intermediate filler area 212b, intermediate filler area 212c and bottom
Portion packing area 213, the cold heat transfer media obtained through heat exchange cooling return to solar energy collection after the outflow of the bottom of heat accumulation tank body 201
Thermal field 100.When middle packing area 212a temperature is increased to setting value, high-temperature heat-transfer medium is switched to from second intermediate filler
Area 212b enters, and passes sequentially through intermediate filler area 212b, intermediate filler area 212c and bottom filling area 213, cools through heat exchange
The cold heat transfer media arrived returns to solar energy heat-collection field 100 after the outflow of the bottom of heat accumulation tank body 201.The rest may be inferred, until high
Warm heat transfer medium switches to the intermediate filler area 212c entrance from bottom, is flowed out from bottom filling area 213, and make centre
The temperature in packing area 212c or bottom filling area 213 (selection one) is increased to setting value, completes the storage of heat accumulation tank body 201
Heat, the cold heat transfer media obtained through heat exchange cooling return to solar energy heat-collection field 100 after the outflow of the bottom of heat accumulation tank body 201.
The specific transfer sequence of each valve refers to table 1.
The heat accumulation thermal desorption system of table 1 valve transfer order in heat accumulation
Note：In upper table, if only carrying out heat accumulation, without generating electricity, then 210 is normally closed；If the two is carried out simultaneously, 210 is normally opened.
For heat accumulation thermal desorption system 200 when carrying out heat release, the cold heat transfer media from steam generating system 300 is first from storage
The bottom of hot tank body 201 enters, and passes sequentially through bottom filling area 213, intermediate filler area 212c, 212b, 212c and top filler
Area 211, the high-temperature heat-transfer medium obtained through heat exchange heating enter steam generating system after the outflow of the top of heat accumulation tank body 201
300.When bottom filling area 213, temperature is reduced to setting value, cold heat transfer media is switched to above bottom filling area 213
First intermediate filler area 212c enters, and passes sequentially through intermediate filler area 212c, intermediate filler area 212b, intermediate filler area 212a
With top packing area 211, the high-temperature heat-transfer medium obtained through heat exchange heating enters steam after the outflow of the top of heat accumulation tank body 201
Electricity generation system 300.When first intermediate filler area 212c temperature is reduced to setting value, cold heat transfer media is switched to from second
Individual intermediate filler area 212b enters, and passes sequentially through intermediate filler area 212b, intermediate filler area 212a and top packing area 211, passes through
The high-temperature heat-transfer medium that heat exchange heating obtains enters steam generating system 300 after the outflow of the top of heat accumulation tank body 201.Class according to this
Push away, until cold heat transfer media switches to the intermediate filler area 212a entrance from the top, flowed from top packing area 211
Go out, and the temperature of intermediate filler area 212a or top packing area 211 (selection one) is increased to setting value, complete heat accumulation
The heat release of tank body 201, the high-temperature heat-transfer medium obtained through heat exchange heating enter steam after the outflow of the top of heat accumulation tank body 201 and sent out
Electric system 300.The specific transfer sequence of each valve refers to table 2.
The heat accumulation thermal desorption system of table 2 valve transfer order in heat release
Note：In upper table, if by the independent heat supply of heat accumulation thermal desorption system, solar energy heat-collection field not heat supply, then 208,209 is normally closed；
If the two heat supply simultaneously, 208,209 is normally opened.
When the energy storage of heat accumulation thermal desorption system 200 deficiency or load are too big or do not have solar energy, integrated form boiler can pass through combustion
Fuel burning is heated, and to meet the needs of steam generating system 300, ensures round-the-clock generating.
By taking trough solar power generation system as an example, its technique includes but is not limited to using slot type, tower, dish this embodiment
The similar solar power system of the other forms such as formula.
Claims (10)
1. a kind of all-weather solar electricity-generating method based on whole operation with pressure, applied to including solar energy heat-collection field (100),
In the solar power system of heat accumulation thermal desorption system (200) and steam generating system (300), it is characterised in that：Including following step
Suddenly：
1) solar energy heat-collection field (100) absorbs solar energy and heats cold heat transfer media, and gained high-temperature heat-transfer medium is transported to steaming
Generated electricity and/or be transported in vapour electricity generation system (300) in heat accumulation thermal desorption system (200) and stored up with energy-accumulating medium heat exchange
Heat；
2) by the high-temperature heat-transfer medium of solar energy heat-collection field (100) output with being heated up via heat accumulation thermal desorption system (200) heat exchange
To high-temperature heat-transfer medium be transported to steam generating system (300) simultaneously and generated electricity, or individually by heat accumulation thermal desorption system
(200) high-temperature heat-transfer medium that heat release obtains is transported in steam generating system (300) and generated electricity；
3) cold heat transfer media that high-temperature heat-transfer medium obtains in steam generating system (300) after release heat energy returns to solar energy
Heat collecting field (100) carries out thermal-arrest again and/or return heat accumulation thermal desorption system (200) carries out heat exchange heating again；
In above-mentioned steps, the steam generating system (300) is heated production steam using high-temperature heat-transfer medium and generated electricity；It is described
Heat transfer medium is compressed gas medium, and the compressed gas medium includes air, carbon dioxide, nitrogen, helium, methane, water and steamed
One or more in gas.
2. the all-weather solar electricity generation system according to claim 1 based on whole operation with pressure, it is characterised in that：Institute
It is the gas medium for being mixed with solia particle to state heat transfer medium；The solia particle be without phase-change material form without phase transformation particulate,
Or to form capsule shell by solid heat conductive material, the phase transformation capsule particulate of capsule filling being made up of phase-change material.
3. the all-weather solar electricity-generating method according to claim 1 or 2 based on whole operation with pressure, its feature exist
In：
The heat accumulation thermal desorption system (200) includes heat accumulation tank body (201), is situated between in the heat accumulation tank body (201) according to filling energy storage
The position different demarcation of matter is the top packing area (211), more than one intermediate filler area (212) and bottom being sequentially communicated
Portion packing area (213)；
For the heat accumulation thermal desorption system (200) when carrying out heat accumulation, the high-temperature heat-transfer medium from solar energy heat-collection field (100) is first
Enter from the top of heat accumulation tank body (201), pass sequentially through top packing area (211), each intermediate filler area (212) and bottom filling
Area (213), the cold heat transfer media obtained through heat exchange cooling return to solar energy heating after the outflow of the bottom of heat accumulation tank body (201)
Field (100)；
When top packing area (211) temperature is increased to setting value, high-temperature heat-transfer medium is switched under top packing area (211)
First intermediate filler area (212) of side enters, and passes sequentially through first intermediate filler area (212) and each centre below
Packing area (212) and bottom filling area (213), through the heat exchange obtained cold heat transfer media of cooling from the bottom of heat accumulation tank body (201)
Solar energy heat-collection field (100) is returned after portion's outflow；
When first intermediate filler area (212) temperature is increased to setting value, high-temperature heat-transfer medium is switched to from second centre
Packing area (212) enters, pass sequentially through second intermediate filler area (212) and each intermediate filler area (212) below and
Bottom filling area (213), the cold heat transfer media obtained through heat exchange cooling return too after the outflow of the bottom of heat accumulation tank body (201)
Positive energy heat collecting field (100)；
The rest may be inferred, until high-temperature heat-transfer medium switches to an intermediate filler area (212) entrance from bottom, is filled out from bottom
Expect area (213) outflow, and the temperature in bottom filling area (213) is increased to setting value, complete the heat accumulation of heat accumulation tank body (201),
The cold heat transfer media obtained through heat exchange cooling returns to solar energy heat-collection field (100) after the outflow of the bottom of heat accumulation tank body (201).
4. the all-weather solar electricity-generating method according to claim 3 based on whole operation with pressure, it is characterised in that：
For the heat accumulation thermal desorption system (200) when carrying out heat release, the cold heat transfer media from steam generating system (300) is first
Enter from the bottom of heat accumulation tank body (201), pass sequentially through bottom filling area (213), each intermediate filler area (212) and top filler
Area (211), the high-temperature heat-transfer medium obtained through heat exchange heating enter steam-electric power system after the outflow of the top of heat accumulation tank body (201)
System (300) is generated electricity；
When bottom filling area (213) temperature is reduced to setting value, cold heat transfer media is switched to from bottom filling area (213)
First intermediate filler area (212) of side enters, and passes sequentially through each centre of first intermediate filler area (212) and its top
Packing area (212) and top packing area (211), through the heat exchange obtained high-temperature heat-transfer medium of heating from the top of heat accumulation tank body (201)
Generated electricity after portion's outflow into steam generating system (300)；
When first intermediate filler area (212) temperature is reduced to setting value, cold heat transfer media is switched to from second centre
Packing area (212) enter, pass sequentially through second intermediate filler area (212) and its top each intermediate filler area (212) and
Top packing area (211), the high-temperature heat-transfer medium obtained through heat exchange heating enters after the outflow of the top of heat accumulation tank body (201) to be steamed
Vapour electricity generation system (300) is generated electricity；
The rest may be inferred, until cold heat transfer media switches to an intermediate filler area (212) entrance from the top, is filled out from top
Expect area (211) outflow, and the temperature of top packing area (211) is increased to setting value, complete the heat release of heat accumulation tank body (201),
The high-temperature heat-transfer medium obtained through heat exchange heating enters steam generating system (300) after the outflow of the top of heat accumulation tank body (201)
Generated electricity.
5. a kind of all-weather solar electricity generation system based on whole operation with pressure, including solar energy heat-collection field (100), heat accumulation are put
Hot systems (200), steam generating system (300), the first pressue device (400) and the second pressue device (500), its feature exist
In：
The solar energy heat-collection field (100) include as cold heat transfer media input cold heat transfer media main pipe (101) and
High-temperature heat-transfer medium main pipe (102) as high-temperature heat-transfer medium output end；
The heat accumulation thermal desorption system (200) and steam generating system (300) be arranged in parallel at cold heat transfer media main pipe (101) with
Between high-temperature heat-transfer medium main pipe (102)；
The heat accumulation thermal desorption system (200) includes heat accumulation tank body (201), is situated between in the heat accumulation tank body (201) according to filling energy storage
The position different demarcation of matter is the top packing area (211), more than one intermediate filler area (212) and bottom being sequentially communicated
Portion packing area (213)；Wherein top packing area (211) passes through top switching valve (203) and high-temperature heat-transfer medium main pipe (102) phase
Even, bottom filling area (213) are connected by bottom switching valve (204) with cold heat transfer media main pipe (101), each intermediate filler
Area (212) is connected by corresponding each middle switching valve (202) with middle area connecting tube (207)；
One end of the middle area connecting tube (207) passes through middle area high temperature switching valve (205) and high-temperature heat-transfer medium main pipe
(102) it is connected, the other end of the middle area connecting tube (207) is situated between by middle low temp area switching valve (206) and cryogenic heat transfer
Matter main pipe (101) is connected；
First pressue device (400) be arranged on cold heat transfer media main pipe (101) corresponding to heat accumulation thermal desorption system (200) with
On pipeline section between solar energy heat-collection field (100)；Second pressue device (500) is arranged on cold heat transfer media main pipe
(101) correspond on the pipeline section between heat accumulation thermal desorption system (200) and steam generating system (300).
6. the all-weather solar electricity generation system according to claim 5 based on whole operation with pressure, it is characterised in that：Institute
State steam generating system (300) include waste heat boiler (301), steam turbine (303), generator (307), condensing unit (304) and
Deoxygenation regenerator (305)；The waste heat boiler (301) is heated to be integrated with fuel, the integrated type boiler of heat transfer medium heat exchange function
Stove, the heated side input of the waste heat boiler (301) are connected to high-temperature heat-transfer medium main pipe (102), the waste heat boiler
(301) heated side output end is connected to cold heat transfer media main pipe (101)；The water side input of the waste heat boiler (301)
The feedwater output end of deoxygenation regenerator (305), the water side output end of the waste heat boiler (301) are connected to by water pump (306)
It is connected with the Boiler Steam input of steam turbine (303)；The exhaust steam output end of the steam turbine (303) and condensing unit (304)
Hot-side input end be connected, the pumping output end of the steam turbine (303) and the pumping input phase of deoxygenation regenerator (305)
Even, the power output shaft of the steam turbine (303) is connected with generator (307)；The hot side output end of the condensing unit (304)
It is connected with the backwater input port of deoxygenation regenerator (305).
7. the all-weather solar electricity generation system according to claim 6 based on whole operation with pressure, it is characterised in that：Institute
Stating steam generating system (300) also includes reheater (302), and the heated side input of the reheater (302) is connected to high temperature
Heat transfer medium main pipe (102), the heated side output end of the reheater (302) are connected to cold heat transfer media main pipe (101)；Institute
The steam side input for stating reheater (302) is connected to the reheated steam output end of steam turbine (303), the reheater (302)
Steam side output end be connected to the reheated steam input of steam turbine (303).
8. the all-weather solar electricity generation system based on whole operation with pressure according to any one of claim 5~7, its
It is characterised by：The solar energy heat-collection field (100) includes some solar thermal collectors (105) in vertically and horizontally array arrangement, often
Each solar thermal collector (105) in one longitudinal row shares the thermal-collecting tube (106) of a segmentation series connection insertion, each thermal-collecting tube
(106) input is connected with cold heat transfer media main pipe (101), and output end and the high temperature heat transfer of each thermal-collecting tube (106) are situated between
Matter main pipe (102) is connected；Laterally passed through by some spaced distribution headers (104) between adjacent two thermal-collecting tubes (106)
It is logical；A pressure-control valve (107) is respectively arranged with each thermal-collecting tube (106).
9. the all-weather solar electricity generation system based on whole operation with pressure according to any one of claim 5~7, its
It is characterised by：The energy-accumulating medium is high specific heat solid material or phase-change heat-storage material, is deposited in heat-storing device (201) and is formed
Loose structure.
10. the all-weather solar electricity generation system according to claim 9 based on whole operation with pressure, it is characterised in that：
The high specific heat solid material is the one or more in quartz sand, iron sand, cast iron, iron ore, cobblestone；The phase-change thermal storage
Material includes the shell that solid heat conductive material is formed and the phase-change material filler being encapsulated in shell.
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| CN201710576955.5A CN107401488A (en) | 2017-07-14 | 2017-07-14 | All-weather solar electricity-generating method and system based on whole operation with pressure |
| PCT/CN2018/095550 WO2019011309A1 (en) | 2017-07-14 | 2018-07-13 | Heat-transfer and heat-storage separation method and system for solar photothermal utilization |
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| CN108150370A (en) * | 2017-12-23 | 2018-06-12 | 青岛瑞恩吉能源科技有限公司 | A kind of solar power system and electricity-generating method |
| CN108413367A (en) * | 2018-03-21 | 2018-08-17 | 中国科学院电工研究所 | A kind of supercritical water and fuse salt heat exchanger apparatus |
| WO2019011309A1 (en) * | 2017-07-14 | 2019-01-17 | 武汉丰盈长江生态科技研究总院有限公司 | Heat-transfer and heat-storage separation method and system for solar photothermal utilization |
| JP2020041449A (en) * | 2018-09-07 | 2020-03-19 | 三菱日立パワーシステムズ株式会社 | Solar heat power generation facility |
| CN113280320A (en) * | 2021-06-21 | 2021-08-20 | 西安热工研究院有限公司 | System for greatly improving industrial steam supply reliability based on electric heating heat storage technology |
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Application publication date: 20171128 |