CN204693854U - A kind of solar energy thermal-power-generating device - Google Patents

A kind of solar energy thermal-power-generating device Download PDF

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CN204693854U
CN204693854U CN201520269768.9U CN201520269768U CN204693854U CN 204693854 U CN204693854 U CN 204693854U CN 201520269768 U CN201520269768 U CN 201520269768U CN 204693854 U CN204693854 U CN 204693854U
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heat
temperature
circulation
air
boulez
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孟宁
王海波
魏然
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Nanjing Reclaimer Environmental Technology Co Ltd
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Nanjing Reclaimer Environmental Technology Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

Abstract

The utility model relates to a kind of solar energy thermal-power-generating device, this device adopts Boulez pause circulation and bottom Boulez in top to pause the circulation overlapping method of operation, adopt air as cycle fluid, air is after top circulation compressor pressure, the cavity type receiver sending into solar energy Accumulated Heat Units absorbs heat, utilize top Boulez the to pause higher air of temperature that high temperature air turbine in circulation discharges pauses as bottom Boulez the thermal source of circulation, thus forms superposition type solar heat power generation system.This device effectively can improve the efficiency of solar energy thermal-power-generating, and the security of unit, good economy performance, be particularly suitable for water-deficient area.

Description

A kind of solar energy thermal-power-generating device
Technical field
The utility model relates to a kind of solar energy thermal-power-generating device, concrete genus solar energy utilization technique field.
Background technology
Along with renewable energy utilization is global flourish, solar energy heat build-up generating (CSP) and photovoltaic solar generate electricity (PV) obtain and develop faster.Utilize solar energy power generating, the shorter light of wavelength can only be made to be utilized, the longer light of wavelength is wasted completely, and the temperature of battery is raised, the efficiency of battery is caused to decline, and utilize solar light-heat power-generation, can make full use of the sunshine of whole wavelength, thus solar energy heat build-up generating (CSP) is progressively by people are familiar with, are studied and are paid attention to.Solar energy heat build-up generating (CSP) is compared photovoltaic solar generating (PV) and is had the outstanding features such as scale is large, concentration degree is high, efficiency is high, but the common issue faced how to reduce cost of investment and how to improve generating efficiency and then reduce cost of electricity-generating, especially reduces cost of investment and improve the focus that generating efficiency just becomes two kinds of solar energy generation technology competitions.
Solar energy heat build-up generating (CSP) mainly contains slot type, dish-style and the hot power generation mode such as tower, wherein groove type solar heat build-up generating (CSP) realizes commercialization, and U.S. SEGS power station and Spain AndaSol power station have had the experience of commercialized running; This technology mainly adopts conduction oil to be heat-transfer working medium, generates electricity through conduction oil heat exchange rear drive conventional steam turbine drive electrical generators group.Because current conduction oil operating temperature must control at about 400 DEG C, exceed this temperature and will cause the problems such as conduction oil cracking, viscosity raising and heat transfer efficiency reduction, because which limit operating temperature and the generating efficiency of groove type solar heat build-up generating.
Dish solar thermal power system, based on single rotational paraboloid mirror, forms complete optically focused, thermal-arrest and a generator unit.Adopt double-axis tracking device, its focusing ratio is generally between 1000 ~ 3000.Heat sink solar radiation also converts thereof into heat energy, heats heat absorption working medium, drives heat engine (as gas turbine, Stirling engine or other type turbine etc.), realizes photoelectric conversion.The power of current single dish-style system mostly is 5 ~ 50kW, and peak electrical generation efficiency can reach 29%, and in the various modes of solar energy thermal-power-generating, it is most effective.Dish solar thermal power system is mainly used in distributing dynamical system, although multiple dish-style device can be formed a larger electricity generation system, they remain mini-system in principle, is not easy to maximize; Also be not suitable for the dynamic power machine of Dish solar thermal power system at present, its application receives certain restriction simultaneously.Dish solar thermal power system is other modes relatively, and have the advantages such as modular flexible deployment ability, higher focusing ratio and generating gross efficiency, when its shortcoming is maximization heat build-up generating, cost is more much higher than the tower-type solar thermal power generating system with scale.
Tower-type solar thermal power generating system, also claims concentrated solar heat power generation system.The citation form of solar energy tower type thermal generation system is the heliostat group utilizing the independently tracked sun, by solar ray collecting on the receiver being fixed on top of tower, in order to produce high temperature, heating working medium produces superheated steam or high-temperature gas, driving steam turbine generating set or Gas Turbine Generating Units generating, thus solar energy is converted to electric energy.The huge heliostat field be made up of many heliostats, its area is very large, and focusing ratio is very high, and a receiver can collect the radiant power of 100MW, and running temperature can reach 1000 ~ 1500 DEG C.Hot fluid in order to absorb solar thermal energy has water, fused salt, air etc. usually.Corresponding different hot fluids, the type of tower type solar receiver is also different:
(1) hot fluid is the system of water (steam)
Using water (steam) as the tower-type solar thermal power generating system of hot fluid, directly utilize the steam generating equipment of the similar station boiler of solar energy heating focused on.In such a system, feedwater is once after the preheating of tower type solar receiver, evaporation, the heat-transfer surface such as overheated, and become the acting working medium of Rankine cycle steam turbine, drive electrical generators generates electricity; After the steam discharge of steam turbine is sent to and condenses into water in condenser, be again sent in receiver by feed pump.For ensureing the stability of producing steam, steam hold over system being usually set, sun-drenched time, unnecessary steam heat being stored in heat-accumulator tank, thus ensure the stable of system operational parameters.Due to transient characteristic and the skewness of incident solar radiation, the endothermic tube be arranged in receiver often leaks.
The tower type solar thermo-power station of the current employing live (open) steam mode of production mainly comprises the Eurelios power station of Italian 0.75MW, the CESA-1 power station of Spain 1.2MW, the Solar One power station of U.S. 10MW, the PS10 power station etc. of Spain 11MW.
(2) hot fluid is the system of fused salt
In order to avoid the receiver of the tower type solar electricity generation system of the live (open) steam mode of production leaks, simultaneously in order to obtain higher operating temperature, fused salt can be adopted as the heat recipient fluid in receiver.Fused salt is used to have the MSEE power station of the U.S. and Solar Two power station, Hispanic Solar TRES power station etc. as the tower type solar power station of hot fluid.Solar Two is a practicality project in order to advance tower type solar electricity generation system commercialized development, for promoting that significant contribution has been made in the development of tower/fused salt solar energy thermal-power-generating technology.
But fused salt also exists certain shortcoming, namely have pyrolytic and etching problem, associated materials must be high temperature resistant, corrosion-resistant, makes system cost increase, reliability reduction; Fused salt also has low temperature freezing problem, must be incubated relevant device, preheating and companion heat etc., the energy consumption of system is increased.The fused salt research of novel crystalline temperature below 100 DEG C merits attention, as the fused salt of crystalline temperature below 100 DEG C is being studied in U.S. Sang Diya laboratory, if successfully will be hopeful to replace conduction oil.
(3) hot fluid is the system of air
Tower type solar electricity generation system using air as heat-absorbing medium, can reach higher operating temperature.Receiver adopts cavity type receiver usually.Tower type solar electricity generation system using air as heat-absorbing medium can adopt following two kinds of working methods.
Working method is that the hot-air produced in receiver is applied to a Rankine cycle heat and power system, as shown in Figure 2.Within the system, receiver ambient air and absorb the solar radiation from solar energy mirror field from the return air of pressure fan in recipient, heat recovery steam production system (Heat Recovery Steam Generating is sent to by the hot-air after heating, HRSG), the steam produced in HRSG is sent in steam turbine and does work, and drive electrical generators generates electricity.After hot-air transfers heat to working medium in HRSG, become Cryogenic air, be then again sent in the receiver of tower top by pressure fan.The shortcoming of this system adopts low-pressure air as heat-absorbing medium, absorber bulky, and the vapor (steam) temperature of steam Rankine cycle generating set is limited by resistant to elevated temperatures material, at present for the vapor (steam) temperature of steam Rankine cycle also not more than 625 DEG C.Its flow process as shown in Figure 2
Another kind of working method the hot-air produced in receiver is applied to Boulez pauses-Rankine association circulating power generation system.Directly pressure-air can be heated to 1000 DEG C with the propelling gas turbine engine that gets on, the gas after propelling gas turbine engine still has higher temperature, then generates steam by heat exchanger heats water, and steam removes pushing turbine again, effectively utilizes heat.Also the pressure-air after the heating of cavity type receiver directly can be sent into combustion chamber, enter gas turbine power generation further after heating, the exhaust of gas turbine enters bottom Rankine cycle and generates electricity.
Europe and Israel comparatively pay close attention to as the heat transfer technology of tower type solar electricity generation system of heat-absorbing medium and the research of heat storage technology employing air, and carried out some famous research projects, as Phoebus-TSA, SOLAIR and DIAPR etc., achieve certain achievement in research.The Germany J ü lich power station of putting into operation in 2009 is a verification experimental verification power station, be also in the world first adopt air as the tower type solar electricity generation system of heat transfer medium.The operating diagram in power station as shown in Figure 3.
Development zone, Nanjing of China Jiangning and Israel's R & D Cooperation build up domestic seat of honour 70kw tower type solar energy thermal power generation demonstration project, successfully generate electricity by way of merging two or more grid systems in by the end of October, 2005 in, this is China first the tower type solar energy thermal power generation station adopting Brayton cycle principle to set up.This power station makes heat-transfer working medium by solar energy cavity type receiver with air, be aided with natural gas and small size gas turbine takes the lead in achieving the thermal electric generator utilizing solar energy and Brayton cycle combine with technique, the tower height of its tower system is 33 meters, 32 specular cross sections are adopted to be the heliostat of 19.6 ㎡, the export temperature of receiver is 900 DEG C, inlet pressure is 0.4MPa, and test peak conversion efficiency is 85%, and gas turbine thermoelectrical efficiency is 28.5%.But because cavity-type solar receiver entrance is too little, it is not ideal that intake air temperature is difficult to the supporting experiment effect that causes with combustion gas.But the high thermoelectrical efficiency of gas turbine merits attention, after obviously solving matching problem, will be the tower-type solar thermal power generating system that there is application prospect pole." tulip " small-sized tower type solar energy thermal power generation pilot project that Israel and Australia implement is actual is the continuation of this technology.At present, the 1MW tower type solar power generation project undertaken by Yanqing County of Beijing county, Chinese Academy of Sciences electrician place just in test.
Chinese patent 201020168753.7,201210237402.6,201320792430.2,201310178790.8,201420007400.0 etc. discloses and adopts the enclosed Boulez of gas boosting mode to pause the circulatory system.
What be worth special concern is tower type solar electricity generation system using air as heat-absorbing medium, and this system adopts air as heat carrier.Although the heat-conductive characteristic of air is bad, its operating temperature range is large, simple to operate, non-toxic, can not only be connected with steam-powered steam turbine, and can also directly utilize high temperature air to drive gas turbine, efficiency is higher; In this scheme, the light focused on is projected onto a kind of gas permeable material (such as a kind of wire braid), air is passed through from this by the material that heats, because the contact surface of air and this thermal-arrest material is very large, therefore heat transfer is very fast, efficiency is very high, and can the high temperature of air heat to more than 700 DEG C.
Said system have employed Boulez and to pause hot generation technology, and its most outstanding advantage is that system conversion efficiency of thermoelectric is high, mainly adopts air, air and steam to be power working medium, and provides high temperature heat to run by the solar energy such as fuel oil, combustion gas.Clearly, the Boulez hot generation technology that pauses will have good application prospect in solar energy thermal-power-generating field.But all supporting waste heat boiler recovered steam of its afterbody, for steam Rankine cycle generating, service requirement is high, and system is comparatively complicated.
The delivery temperature of gas turbine is very high, the gas turbine unit delivery temperature of such as simple cycle is generally 470 DEG C ~ 600 DEG C, employing high-temperature exhaust air heats the air from blower outlet, improve the temperature that it enters combustion chamber, the fuel quantity added in combustion chamber can be made to reduce, thus improve the thermal efficiency, after installing regenerator additional in the gas turbine, the above-mentioned course of work can be realized, Here it is extraction cycle.Accompanying drawing 4 is the signal of its scheme.In accompanying drawing 4: C-compressor, R-regenerator, B-combustion chamber, T-turbine, L-generator.The people such as Daniele Cocco have studied the circulation of external-burning miniature gas turbine, and have carried out simulation calculation to three kinds of external-burning miniature gas turbines circulation that turbine inlet temperature is respectively 800K, 1000K, 1200K, and its result of calculation as shown in Figure 5; Obviously, when power output is more than 75kW, the thermal efficiency of external combustion gas turbine circulation is not low.This external combustion gas turbine circulation is by regenerative-type gas turbine cycle development, and its structure is similar to gas turbine extraction cycle; In external-burning gas turbine cycle, combustion chamber is replaced by high temperature regenerator, and adds a substitute fuel burner in outside, achieves the indirect of gas turbine; In substitute fuel combustion chamber, fuel burns in a little higher than ambient atmosphere pressure.The working medium that this gas turbine cycle adopts is air, and its essence is air turbine, and its advantage is that the combustion gas generated after fuel combustion does not flow through turbine, avoids the damage of the dirt in fuel to equipment.US Airways space research company and the joint research of heat chemistry energy Cooperation external-burning miniature gas turbine circulates, and successfully install in aerospace studies company laboratory, run the external-burning circulatory system, turbine inlet temperature generally remains on 750 DEG C, and temperature upper limit is 800 DEG C.The circulatory system of this pattern is that the application of regenerative resource in cogeneration provides a kind of selection newly, is a kind of up-and-coming, efficient, cheap functional mode, and how expanding its range of application is worth further investigation.
Therefore above-mentioned prior art Problems existing how is solved, give full play to tower or that disc type solar energy focusing ratio is high, temperature is high advantage, overcome in solar energy thermal-power-generating technology and adopt the inherent defect of steam Rankine cycle (as needed supporting corresponding water processing establishment, stram condenser and recirculating cooling water system etc.), expand the range of application of external-burning miniature gas turbine circulation, set up the solar energy thermal-power-generating pattern that efficiency is higher, new-type, become the difficult point of this area research.
Summary of the invention
The utility model is for solving prior art Problems existing, a kind of solar energy thermal-power-generating device is provided, adopt top circulation to be Boulez with end circulation to pause the association circulating power generation system of circulation: top circulation adopts air as the heat-absorbing medium of solar energy, drags air turbine generating; The circulation of external combustion gas turbine is used for reference in end circulation, select air as cycle fluid, the waste heat reclaiming top cyclic high-temperature air turbine Exhaust Gas is used for end circulating generation, making solar thermal utilization rational while, simplify flow process, thus reach the object of economical and efficient.
The purpose of this utility model is realized by following measures:
A kind of solar energy thermal-power-generating device, is characterized in that:
This device utilize top Boulez to pause higher air of temperature that high temperature air turbine in circulation discharges pauses as bottom Boulez the thermal source of circulation, and Boulez circulation of pausing in bottom adopts air as cycle fluid, thus forms superposition type solar energy thermal-power-generating device;
The circulation of pausing of described top Boulez refers to that air 20 is after circulation compressor 21 supercharging of top, form top circulation compressed air 22, the cavity type receiver 23 sending into solar energy Accumulated Heat Units absorbs heat, the high temperature air 24 produced drives high temperature air turbine 25 to drag top circulating generator 26 and generates electricity, thus solar energy is converted to electric energy, the air that high temperature air turbine 25 is discharged, after regenerator 27 is lowered the temperature, enter air, the closed circuit thus formation top Boulez pauses;
The circulation of pausing of described bottom Boulez refers to that air 30 is after the supercharging of end circulation compressor 31, produce compressed air 32, the exhaust heat of high temperature air turbine 25 is reclaimed by regenerator 27, the hot-air 33 produced, feeding end circulating air turbine 34 drags end circulating generator 35 and generates electricity, discharged by end circulating air turbine 34 again, the closed circuit thus formation bottom Boulez pauses;
Pause circulation and bottom Boulez of described top Boulez pauses and cycles through regenerator 27 and form superposition type solar heat power generation system.
Described solar energy Accumulated Heat Units includes but not limited to produce the tower of high temperature or disc type solar energy Accumulated Heat Units.
Be provided with two-stage heat-storage subsystem, described two-stage heat-storage subsystem comprises high-temperature heat accumulation device 37, low-temperature heat accumulating device 38: from solar energy heat build-up system cavity type receiver 23 high temperature air 24 out, store through the part sensible heat of high-temperature heat accumulation device 37 by high temperature air, then discharge after low-temperature heat accumulating device 38 accumulation of heat cooling.
Described two-stage heat-storage subsystem is store heat when solar radiation energy is sufficient, when solar radiant energy quantity not sufficient, top circulation compressed air 22 after the supercharging of top circulation compressor 21, after low-temperature heat accumulating device 38, high-temperature heat accumulation device 37 heat, the high temperature air 24 produced, drives high temperature air turbine 25 to drag top circulating generator 26 and generates electricity.
Comprise high-temperature heat accumulation working medium in described high-temperature heat accumulation device 37, this high-temperature heat accumulation working medium includes but not limited to as fused salt, metal heat-storing material or resistant to elevated temperatures concrete heat-storing material.
Comprise low-temperature heat accumulating working medium in described low-temperature heat accumulating device 38, this low-temperature heat accumulating working medium includes but not limited to as conduction oil, high pressure saturation water or phase-change working substance.
Be provided with air filter: described air sends into top circulation compressor 21, end circulation compressor 31 after air filter filters;
Described top circulation compressor 21, end circulation compressor 31 adopt one stage of compression, or multi-stage compression, cooling during rolling mode;
Described top circulation compressor 21, end circulation compressor 31 adopt scroll compressor, screw compressor, centrifugal compressor, piston compressor, slide vane compressor or Axial Flow Compressor;
As preferably, adopt the supporting miniature gas turbine unit of wet screw compressor, adopt water as the cooling medium of helical-lobe compressor.In the synchronous hydrojet of current band, cold wet screw compressor single stage compress ratio can reach 1:10, and compression final temperature is not then higher than 85 DEG C; The final pressure of multi-stage screw compressor can reach 4MPa(inter-stage band cooling during rolling), the discharge capacity of helical-lobe compressor has charged into the scope of centrifugal compressor, and capacity can reach 500m3/min, can meet the supporting requirement of miniature gas turbine completely.Within 1988, Shanghai 711 research institute is with chemical industry one factory of oil-refining chemical portion of Shanghai Petrochem. General Plant and the cooperation of Shanghai Compressors Factory, have developed " recovery device for wet screw compressor torch gas " (ZL89106075.8) for petroleum chemical industry flare gas recovery; " ammonia flow process Raw gas processed enters the improvement of pressing technology before change furnace " (ZL91108225.5), the low pressure stage of existing piston compressor is replaced with screw compressor, unstripped gas after desulfurization enters screw compressor pressurization, in compressor, spray into the cooling water through desalination deoxygenation simultaneously, injection flow rate is advisable to make temperature remain on 100 ± 5 DEG C, discharge from compressor outlet and be pressurized to the gas of required pressure, water vapour and hot water mixture, isolate the gas after hot water and water vapour sends into conversion section in the lump.Obviously, adopt water-spraying control technology, the air temperature control of blower outlet can be made at about 95 DEG C, while avoiding flue gas low-temperature to corrode, for the flue gas discharge temperature reducing gas turbine creates extremely excellent condition, when adopting clean fuel, the flue-gas temperature that gas turbine is discharged can be controlled in about 130 DEG C, only reduce exhaust gas temperature, absolute thermal efficiency can improve more than 1%.
Described top circulation compressor 21, end circulation compressor 31 can merge into same compressor, and the compressed air after supercharging is divided into two-way, namely push up circulation compressed air 22, end circulation compressed air 32, are sent to top circulation, end circulation conduct respectively as cycle fluid.
Described high temperature air turbine 25, end circulating air turbine 34 can adopt the coaxial or different axle method of operation.
When described high temperature air turbine 25, end circulating air turbine 34 adopt coaxial manner, top circulating generator 26, end circulating generator 35 can merge into same generator.
Described regenerator 27 comprises surface-type and regenerative two class;
Described surface-type regenerator includes but not limited to shell-and-tube, board-like, plate-fin and original surface formula (New-type plate);
Described high temperature air turbine 25, end circulating air turbine 34 are scroll expansion machine, screw type expansion machine, centrifugal decompressor or piston expansion engine.
Described top Boulez the pause high temperature air turbine 25 of circulation, the end circulating air turbine 34 of circulation, bottom Boulez that pause adopts identical or different admission pressure.
Described top Boulez pause circulation and bottom Boulez pause circulate can select different pressure, temperature organizes superposition type solar heat power generation system, such as top Boulez pauses to circulate and adopts the method for operation of low pressure, higher temperature, bottom Boulez pauses to circulate and adopts the method for operation of high pressure, lower temperature, while raising unit efficiency, reduce the selection requirements of material.
Thermosistor is provided with between described top circulation compressor 21 and high temperature air turbine 25, burn as adopted fuel burner and produce high-temperature flue gas heating top circulation compressed air, indirectly fill into institute's calorific requirement, thus ensure that top Boulez pauses operational factor stable of circulation.
Described fuel comprises biomass fuel, coal, gaseous fuel or liquid fuel.
Unaccounted equipment and back-up system thereof in the utility model, pipeline, instrument, valve, the bypass facility etc. that is incubated, has regulatory function adopt known mature technology to carry out supporting.
Be provided with and the safety of the utility model system support, regulation device, adopt the control technique of existing maturation to carry out supporting, make solar heat power generation system energy economy, safety, high-efficiency operation, reach energy-saving and cost-reducing object.
the utility model compared to existing technology tool has the following advantages:
1, by increasing the air capacity that bottom Boulez pauses in circulation, can effectively reduce top Boulez pause circulation delivery temperature, expanded the application of external combustion gas turbine unit simultaneously, be applied to solar heat power generation system, the efficiency of solar energy thermal-power-generating is high, even if when adopting little micro-gas turbine unit, the thermal efficiency of Combined Cycle Unit still can reach more than 37%.
2, solar energy thermal-power-generating Combined Cycle Unit runing adjustment is flexible, without the need to being equipped with the condenser in conventional gas-steam combined cycle power generating unit, the public work water consumption of unit reduces significantly, and equipment greatly simplifies, and is particularly suitable for water-deficient area.
3, the self-insurance ability of system is strong; during one of the turbine in top Boulez pauses and bottom Boulez pauses off-the-line, still by regulating the method for operation, guarantee unit safety operation; enhance safety operation elasticity and the flexibility of whole system, be convenient to the rapid enforcement of safe emergency measure.
4, circulation compressed air in the end can adopt atm number, the high pressure method of operation, is guaranteeing, under the prerequisite effectively reducing top circulating exhaust temperature, the end Cycle Unit thermal efficiency, also can reduce the material requirement of regenerator, thus effectively reduce equipment manufacturing cost.
5, in Combined Cycle Unit top circulation and end circulatory turbine machine can adopt coaxial manner, the end circulation and top circulation generator can merge into a generator, thus equipment is simplified more, compact.
6, the more traditional solar energy thermal-power-generating technology of the security of whole unit significantly improves, and maintenance load significantly reduces.
Accompanying drawing explanation
Fig. 1 is a kind of solar energy thermal-power-generating device schematic flow sheet of the present utility model;
In Fig. 1: 20-air, 21-pushes up circulation compressor, and 22-pushes up circulation compressed air, 23-cavity type receiver, 24-high temperature air, 25-high temperature air turbine, 26-pushes up circulating generator, 27-regenerator, 28-is vented, 29-solar energy heliostat field, 30-air, circulation compressor at the bottom of 31-, circulation compressed air at the bottom of 32-, 33-hot-air, circulating air turbine at the bottom of 34-, circulating generator at the bottom of 35-, air is discharged in circulation at the bottom of 36-, 37-high-temperature heat accumulation device, 38-low-temperature heat accumulating device, 39-waste gas.
Tower-type solar thermal power generating system operation principle (the electricity generation system employing Rankine cycle) schematic flow sheet of Fig. 2 to be a kind of with air be hot fluid.
Tower-type solar thermal power generating system operation principle (the electricity generation system employing combined cycle) schematic flow sheet of Fig. 3 to be a kind of with air be hot fluid.
Fig. 4 is the gas turbine unit schematic flow sheet adopting extraction cycle.
Fig. 5 take air as the graph of relation of the open fire type gas turbine power output of cycle fluid, efficiency and pressure ratio.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
embodiment 1:
As shown in Figure 1, a kind of solar energy thermal-power-generating device schematic flow sheet of the present utility model.
A kind of solar energy thermal-power-generating device, this device utilize top Boulez to pause higher air of temperature that high temperature air turbine in circulation discharges pauses as bottom Boulez the thermal source of circulation, bottom Boulez pauses circulation employing air as cycle fluid, the combined cycle generating unit thus formation superposition type Boulez pauses;
The circulation of pausing of described top Boulez refers to that air 20 is after circulation compressor 21 supercharging of top, form top circulation compressed air 22, the cavity type receiver 23 sending into solar energy Accumulated Heat Units absorbs heat, the high temperature air 24 produced drives high temperature air turbine 25 to drag top circulating generator 26 and generates electricity, thus solar energy is converted to electric energy, the air that high temperature air turbine 25 is discharged, after regenerator 27 is lowered the temperature, enter air, the closed circuit thus formation top Boulez pauses;
The circulation of pausing of described bottom Boulez refers to that air 30 is after the supercharging of end circulation compressor 31, produce compressed air 32, the exhaust heat of high temperature air turbine 25 is reclaimed by regenerator 27, the hot-air 33 produced, feeding end circulating air turbine 34 drags end circulating generator 35 and generates electricity, discharged by end circulating air turbine 34 again, the closed circuit thus formation bottom Boulez pauses;
Pause circulation and bottom Boulez of described top Boulez pauses and cycles through regenerator 27 and form superposition type solar energy thermal-power-generating device.
Described solar energy Accumulated Heat Units adopts tower type solar Accumulated Heat Units, supporting solar energy heliostat field 29.
Be provided with two-stage heat-storage subsystem, described two-stage heat-storage subsystem comprises high-temperature heat accumulation device 37, low-temperature heat accumulating device 38: from solar energy heat build-up system cavity type receiver 23 high temperature air 24 out, store through the part sensible heat of high-temperature heat accumulation device 37 by high temperature air, then discharge after low-temperature heat accumulating device 38 accumulation of heat cooling.
Described two-stage heat-storage subsystem is store heat when solar radiation energy is sufficient, when solar radiant energy quantity not sufficient, top circulation compressed air 22 after the supercharging of top circulation compressor 21, after low-temperature heat accumulating device 38, high-temperature heat accumulation device 37 heat, the high temperature air 24 produced, drives high temperature air turbine 25 to drag top circulating generator 26 and generates electricity.
Comprise high-temperature heat accumulation working medium in described high-temperature heat accumulation device 37, this high-temperature heat accumulation working medium includes but not limited to as fused salt, metal heat-storing material or resistant to elevated temperatures concrete heat-storing material.
Comprise low-temperature heat accumulating working medium in described low-temperature heat accumulating device 38, this low-temperature heat accumulating working medium includes but not limited to as conduction oil, high pressure saturation water or phase-change working substance.
Be provided with air filter: described air sends into compressor after air filter filters.
Described top circulation compressor 21, end circulation compressor 31 adopt multi-stage compression, cooling during rolling mode.
Described top circulation compressor 21, end circulation compressor 31 adopt screw compressor.
Described high temperature air turbine 25, end circulating air turbine 34 can adopt the coaxial method of operation.
Described top circulating generator 26, end circulating generator 35 merge into same generator.
Described regenerator 27 is plate-fin or original surface formula (New-type plate).
Described high temperature air turbine 25, end circulating air turbine 34 are scroll expansion machine.
Described top Boulez the pause high temperature air turbine 25 of circulation, the end circulating air turbine 34 of circulation, bottom Boulez that pause adopts identical or different admission pressure.
Described top Boulez pause circulation and bottom Boulez pause circulate can select different pressure, temperature organizes superposition type Boulez to pause solar heat power generation system, such as top Boulez pauses to circulate and adopts the method for operation of low pressure, higher temperature, bottom Boulez pauses to circulate and adopts the method for operation of high pressure, lower temperature, thus widens the Application Range of unit material.
Thermosistor is provided with between the cavity type receiver of described solar energy Accumulated Heat Units and high temperature air turbine, the high-temperature flue gas heating top circulation compressed air adopting fuel burner burning to produce, indirectly fill into institute's calorific requirement, thus ensure that top Boulez pauses operational factor stable of circulation; Fuel adopts biomass fuel.
Unaccounted equipment and back-up system thereof in the utility model, pipeline, instrument, valve, the bypass facility etc. that is incubated, has regulatory function adopt known mature technology to carry out supporting.
Be provided with and the safety of the utility model system support, regulation device, adopt the control technique of existing maturation to carry out supporting, make solar heat power generation system energy economy, safety, high-efficiency operation, reach energy-saving and cost-reducing object.
Although the utility model with preferred embodiment openly as above; but they are not for limiting the utility model; anyly be familiar with this area technical professional; without departing from the spirit and scope of the invention; various simple modification, equivalent variations can be made, still belong to the protection domain of technical solutions of the utility model.

Claims (9)

1. a solar energy thermal-power-generating device, is characterized in that:
This device is formed by pause circulation and the bottom Boulez circulation overlapping that pauses of top Boulez;
The circulation of pausing of described top Boulez refers to that air (20) is after circulation compressor (21) supercharging of top, form top circulation compressed air (22), the cavity type receiver (23) sending into solar energy Accumulated Heat Units absorbs heat, the high temperature air (24) produced drives high temperature air turbine (25) to drag top circulating generator (26) generating, thus solar energy is converted to electric energy, the air that high temperature air turbine (25) is discharged, discharge after regenerator (27) cooling, the closed circuit thus formation top Boulez pauses;
The circulation of pausing of described bottom Boulez refers to that air (30) is after end circulation compressor (31) supercharging, produce compressed air (32), the exhaust heat of high temperature air turbine (25) is reclaimed by regenerator (27), the hot-air (33) produced, send into end circulating air turbine (34) dragging end circulating generator (35) generating, discharged by end circulating air turbine (34) again, the closed circuit thus formation bottom Boulez pauses;
Pause circulation and bottom Boulez of described top Boulez pauses and cycles through regenerator (27) and form superposition type solar heat power generation system.
2. device according to claim 1, is characterized in that:
Described high temperature air turbine (25) and end circulating air turbine (34), adopt identical or different admission pressure.
3. device according to claim 1, is characterized in that:
Be provided with two-stage heat-storage subsystem: described two-stage heat-storage subsystem comprises high-temperature heat accumulation device (37), low-temperature heat accumulating device (38), from cavity type receiver (23) high temperature air out (24) of solar energy heat build-up system, discharge after high-temperature heat accumulation device (37), low-temperature heat accumulating device (38) accumulation of heat cooling;
Described two-stage heat-storage subsystem is store heat when solar radiation energy is sufficient, when solar radiant energy quantity not sufficient, top circulation compressed air (22) after circulation compressor (21) supercharging of top, after low-temperature heat accumulating device (38), high-temperature heat accumulation device (37) heating, produce high temperature air (24), drive high temperature air turbine (25) to drag top circulating generator (26) generating.
4. device according to claim 3, is characterized in that:
Comprise high-temperature heat accumulation working medium in described high-temperature heat accumulation device, this high-temperature heat accumulation working medium comprises fused salt, metal heat-storing material or resistant to elevated temperatures concrete heat-storing material;
Comprise low-temperature heat accumulating working medium in described low-temperature heat accumulating device, this low-temperature heat accumulating working medium comprises conduction oil, high pressure saturation water or phase-change working substance.
5. device according to claim 1, is characterized in that:
Described high temperature air turbine (25), end circulating air turbine (34), adopt the coaxial or different axle method of operation.
6. device according to claim 5, is characterized in that:
When described high temperature air turbine (25), end circulating air turbine (34) employing coaxial manner, same generator is merged on top circulating generator (26), end circulating generator (35).
7. device according to claim 1, is characterized in that:
Described solar energy Accumulated Heat Units refers to tower or disc type solar energy Accumulated Heat Units.
8. device according to claim 1, is characterized in that:
Described top circulation compressor (21), end circulation compressor (31) adopt one stage of compression, or multi-stage compression, cooling during rolling mode.
9. device according to claim 1, is characterized in that:
Described top circulation compressor (21), end circulation compressor (31) adopt scroll compressor, screw compressor, centrifugal compressor, piston compressor, slide vane compressor or Axial Flow Compressor.
CN201520269768.9U 2015-04-29 2015-04-29 A kind of solar energy thermal-power-generating device Active CN204693854U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896764A (en) * 2015-04-29 2015-09-09 南京瑞柯徕姆环保科技有限公司 Solar thermal power generation method and device
CN105700567A (en) * 2016-04-19 2016-06-22 吴敏军 Simulation test method and testing stand for heliostat control during thermosolar power generation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104896764A (en) * 2015-04-29 2015-09-09 南京瑞柯徕姆环保科技有限公司 Solar thermal power generation method and device
CN105700567A (en) * 2016-04-19 2016-06-22 吴敏军 Simulation test method and testing stand for heliostat control during thermosolar power generation
CN105700567B (en) * 2016-04-19 2019-01-29 中国电力工程顾问集团西北电力设计院有限公司 A kind of sunlight heat power generation heliostat control simulating experimental and testing stand

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