CN102681154A - Fresnel focusing system - Google Patents
Fresnel focusing system Download PDFInfo
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- CN102681154A CN102681154A CN2011100561943A CN201110056194A CN102681154A CN 102681154 A CN102681154 A CN 102681154A CN 2011100561943 A CN2011100561943 A CN 2011100561943A CN 201110056194 A CN201110056194 A CN 201110056194A CN 102681154 A CN102681154 A CN 102681154A
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- fresnel
- aggregation apparatus
- catoptron
- bar
- receiving trap
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
- G02B19/0023—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) at least one surface having optical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/77—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with flat reflective plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/80—Arrangements for concentrating solar-rays for solar heat collectors with reflectors having discontinuous faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
- G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S2023/87—Reflectors layout
- F24S2023/872—Assemblies of spaced reflective elements on common support, e.g. Fresnel reflectors
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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
Abstract
The invention discloses a Fresnel focusing system which comprises a reflector field, receivers and maintenance spaces, wherein the reflector field is composed of a row of parallelly arranged reflecting mirror stripes, the receivers are parallelly arranged above the reflecting mirror stripes, and the maintenance spaces are arranged at the bottom of the reflector field. By the aid of the Fresnel focusing system, severe problems including low focusing efficiency of extinction, tolerance rate, screen ratio, and inconvenience to overhaul and maintain are solved.
Description
Technical field
The present invention relates to a kind of solar-energy light collector, particularly relate to a kind of Fresnel aggregation apparatus.
Background technology
Sun power is as the energy of a kind of cleaning, environmental protection, and people are devoted to the development and utilization to it always for a long time.Particularly in recent years; Because oil price constantly soaring and to the raising of environmental protection requirement; And the anthropogenic carbon dioxide emissions quantitative limitation, various countries have carried out the research that sun power utilizes the aspect harder, particularly to how to obtain more efficiently and utilize sun power to drop into more energy.
Solar light-heat power-generation is one of the most economic means that realize high-power generating, alternative conventional energy resources, and the advantage shortcoming is very obvious separately for three kinds of modes of solar light-heat power-generation, as: tower efficient is high, but disposable having high input; The slot type cost is low, but tower relatively low with butterfly efficient; But butterfly unit standardized production, but scale is difficult to do greatly.
Condensation photovoltaic (CPV) is meant and directly converts the sunshine after converging the technology of electric energy into through the photovoltaic cell of high transformation efficiency, and condensation photovoltaic also is a kind of selection that realizes the low-cost solar generating, and the Fresnel array approaches also is an one of which in the optically focused mode.
The linear fresnel solar beam condensing unit mainly comprises linear Fresnel catoptron bar system and receiving trap; This linear Fresnel catoptron bar system comprises linear reflective mirror bar field; This linear reflective mirror bar field is made up of a plurality of catoptron bars that laterally arrange side by side; These catoptron bars can drive to follow the tracks of sun's motion through tracking means simultaneously, continue to guarantee incident light is reflexed to receiving trap.The sunshine of these catoptron bar reflections is concentrated directive to be arranged in the receiving trap of these catoptron bar tops, is heat energy or electric energy through this receiving element with conversion of solar energy.A common receiving trap can be arranged between a plurality of catoptron bars, so that receive the sunshine of these a plurality of catoptron bar reflections.
In the present linear fresnel solar condenser system, horizontal linear ground, Fresnel mirror field is arranged, is pressed close to fundamental plane such as ground; Bring some inconvenient factors, for example 1, the dust disturbance of ground proximity is many usually, and moisture is heavier; The receiving trap that the paramount height of catoptron bar back reflection of sunray incident Fresnel Jing Chang is erected; Through twice dust horizon, have extinction effect, reduce certain light efficiency; 2, the catoptron bar face dust of Fresnel Jing Chang thickens behind the certain hour, has seriously reduced the reflection potential of catoptron bar, needs more short-period regular cleaning; While, on ground, operating personnel also were inconvenient to clean, and have only the catoptron bar is turned to the upright position because of the tight arranged of Fresnel Jing Chang; Get into the slit of operating personnel between the catoptron bar and operate; So the width of catoptron bar must be very wide, and for example 2 meters, this size is bigger; Desirable strength improves, and cost of manufacture is difficult to descend; 3, the flat reflective mirror of catoptron bar design, in theory, the width of flat reflective mirror bar is close with the width of receiver, and in order to improve the tolerance property of following the tracks of angle, the acceptance width of receiving trap is greater than the width of flat reflective mirror bar; For the symmetrical arrangement and the blade-end loss effect still less (light of convergence deflects away from the axially too much of receptacle) that obtain Fresnel Jing Chang, present Jing Chang generally adopts north and south to arrange, so needs wider range of following the tracks of; For example positive and negative 80 degree; Therefore the mirror field tolerance rate very little (or the width of required receiving trap is very wide) of the catoptron bar of mirror field edge particularly is to obtain higher light concentrating times and better tolerance rate, and mirror field width is very wide; The number of catoptron bar is numerous; And it is very high that receiving trap is arranged, and for example more than 18 meters, the temperature of the heat transfer medium that even so can reach is approximately 250 ℃～300 ℃; Simultaneously because of the raising of the desirable strength of receiving trap etc., corresponding material cost can't be subdued; 4, mirror field horizontal linear is arranged; The catoptron bar is in the process of following the tracks of; The shading rate between the edge reflections mirror bar of every group of mirror field very serious (light that the back mirror bar reflects has been blocked at the back of front mirror bar) has particularly reduced the light gathering efficiency of catoptron bar; 5, the mirror field directly is arranged on the ground, and floor area is bigger, and land utilization ratio is not high, has wasted land resource.Therefore how to improve the light gathering efficiency of the catoptron field of Fresnel, maintenance and safeguard inconvenience, problems such as construction cost and utilization of area rate become the key subjects of Fresnel aggregation technique.
Summary of the invention
The object of the invention mainly is to address the problem: the delustring that 1, the aggregation apparatus light gathering efficiency is not high, tolerance rate and block the serious problems of rate; 2, the inconvenient problem of aggregation apparatus maintenance and maintenance; 3, the aggregation apparatus floor area is big, the problem that land utilization ratio is not high; 4, some other influences cost and reliability problems.
For addressing the above problem; The invention provides a kind of Fresnel aggregation apparatus, comprise mirror field, receiving trap and Maintenance and Repair space, wherein the mirror field is made up of the catoptron bar that at least one row are arranged in parallel; Linear receiving trap is arranged in parallel on the catoptron bar; The Maintenance and Repair space is arranged on the lower bottom part of anti-body Jing Jingchang, and personnel and equipment near equipment mechanisms such as reflector group, carry out work such as Installation and Debugging, cleaning maintenance through this space.
In further embodiment, the mirror surface type of said catoptron bar is a cylinder face type, and can be around the turning axle rotation of self.
Preferably, the mirror surface type of said catoptron bar is special cylinder, has certain convergence ability, and can be around the turning axle rotation of self.
In further embodiment, the rotating shaft position of said mirror field vertical cross-section internal reflector bar is arranged along a straight line, and each mirror bar has identical rotational angle in the tracing process.
Preferably, the certain width layout that centre, said mirror field is positioned under the receiving trap can change the catoptron bar that the position for example stands vertically by both sides, so that vacating space forms central passage, to make things convenient for motor vehicles and machines to pass through and to carry out work high above the ground.
Preferably, said mirror field vertical cross-section internal reflector bar rotating shaft position is arranged along curve pattern, to obtain less shading rate.
Preferably, in every arrangement of mirrors field, said rotating shaft position is along the matrix arrangement of curves.
In further embodiment; The width of said catoptron bar is inconsistent; Catoptron bar width in every group of mirror field under the receiving trap its width wide more so that each mirror bar obtains close tolerance rate, and reduce catoptron bar quantity.
Preferably, the matrix curve fitting that said mirror field the is arranged straight line that to be two sections angles distribute less than 180 ° indent, about use link-type to organize interlock respectively more, simplify structure, reduce cost.
Preferably, bottom, said mirror field is an arch support structures, through catoptron bar rotating shaft supporting reflex Jing Jingchang, improves physical strength.
In further embodiment, said Fresnel aggregation apparatus can be applied to the photovoltaic field, and said receiving trap is the solar battery group of linear arrangement.
In this application mode; On the parallel direction of the solar battery group of linear arrangement property along the line focal line compound parabolic collector units (CPC) can be set further; Light to the focal line direction carries out certain convergence, forms the accurate two-dimentional optically focused that is interrupted of arranging along the focal line direction and receives.
In further embodiment, when said Fresnel aggregation apparatus can be applied to the photo-thermal field, said receiving trap was linear heat collector.
Preferably, receiving trap is made up of at least one U type thermal-collecting tube, and U type thermal-collecting tube comprises the compound parabolic collector units (CPC) of glass bushing, internal layer absorption tube and disposed outside.
In further embodiment, the import and export of U type thermal-collecting tube are at same end, and each U type thermal-collecting tube exit installation self-supporting temperature-sensing valve, and through detecting the temperature of outlet medium, the size of Control Flow keeps the heat transfer medium of equilibrium temperature to export and security of operation.
In further embodiment, keep vacuum state in the space that glass bushing and internal layer absorption tube form, with convection heat losses who reduces U type thermal-collecting tube inside and the absorber coatings of protecting the internal layer absorption tube, increase the service life.
Preferably, through bleeding continuously or intermittently, keep the dynamic vacuum state in the space that said glass bushing and internal layer absorption tube form.
In further embodiment, below, said Maintenance and Repair space can fully utilize, for example, and parking lot or grain, vegetables, flower and plant base or building roof or the like.
Preferably, receiving trap is arranged in the focal line position of mirror field.
Preferably, the width of catoptron bar is more than or equal to the opening of receiving trap.
Preferably, the Maintenance and Repair space is arranged on the lower bottom part of mirror field, apart from floor level more than or equal to 1.5 meters.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present invention is explained in more detail, in the accompanying drawings:
Fig. 1 is the arranged in arrays synoptic diagram of Fresnel aggregation apparatus of the present invention;
Fig. 2 is the Fresnel aggregation apparatus integral arrangement synoptic diagram of a kind of embodiment of the present invention;
Fig. 3 is that the mirror field structure of a kind of embodiment of the present invention is arranged synoptic diagram;
Fig. 4 is the cross-sectional structure synoptic diagram of single catoptron bar of the present invention;
Fig. 5 is that receiving trap of the present invention is the structural arrangement synoptic diagram of photovoltaic solar cell group;
Fig. 6 is that receiving trap of the present invention is the structural arrangement synoptic diagram of photo-thermal solar energy heat collection pipe.
Embodiment
Fig. 1 is the arranged in arrays synoptic diagram of Fresnel aggregation apparatus of the present invention.Conventional fresnel reflecting mirror mirror field 2 can be provided with fundamental plane along continuous straight runs straight line; In order to obtain some more excellent performances; This aggregation apparatus arranges shown in Fig. 1 a, and the array of Fresnel aggregation apparatus arranged by a plurality of Fresnel aggregation apparatus cell arrays, for example 101,102 and 103; The one-piece construction 1 of each Fresnel aggregation apparatus unit mainly comprises high mirror field 2, receiving trap 3 and the Maintenance and Repair space of arranging 10 of frame; Wherein mirror field 2 comprises many catoptron bars that are arranged in parallel 4 compositions; The catoptron bar rotating shaft position of a plurality of catoptron bar 4 integral body in the vertical cross-section of mirror field arrange along the curve pattern of spill, to reduce mutual eclipsing loss between a plurality of catoptron bars 4 that mirror field 2 local arrays arrange to obtain less shading rate; And mirror field 2 is positioned at catoptron bar 4 that the middle certain width layout under the receiving trap 3 can change the position so that vacating space; For example keep to the side to stand vertically; Form central passage 13 (seeing Fig. 1 b), carry out work high above the ground to make things convenient for personnel and motor vehicles and machines to pass through, after accomplishing work high above the ground; The catoptron bar 4 of this position is got back to original position, proceeds reflecting condensation.In order to simplify the tracking drive pattern, the concave Iy curved that mirror field 2 is arranged fits to two sections straight line, and is as shown in Figure 1; With the catoptron bar 4 on the former curve homonymy that is arranged in spill, for example 4-1,4-3 and 4-5, match is arranged on same the straight line; And be furnished with interlock connecting rod 11 under the every catoptron bar 4; Multiple reflection mirror bar 4 interlocks to realize the connecting rod mode simplify structure, reduce cost.For improving the physical strength of mirror field 2, in 2 bottoms, mirror field arch support structures 12 is set, be used for supporting reflex mirror mirror field 2.The width of a plurality of catoptron bars 4 is inconsistent; Wherein the width of the catoptron bar 4-1 that arranges than both sides of the catoptron bar 4-5 that arranges of 2 centre positions, mirror field and 4-3 is wide; The width of catoptron bar 4 that is every group of mirror field 2 internal placement is relevant with the position in it is arranged in the mirror field; The present position is more near the center under the receiving trap 3; The width of the catoptron bar 4 that it is corresponding is wide more, when making each catoptron bar 4 obtain close optics tolerance ability, reduces catoptron bar quantity; The width of catoptron bar 4 should not be made excessive, when saving material and space, also can improve the catoptron precision of catoptron bar 4; Because of the face type of the design's catoptron bar 4 is a cylinder, have certain convergence ability, certain layout of mirror field 2 simultaneously, for example north and south is arranged; Wider range of required tracking angle, and in the process that can rotate at the turning axle 5 around self, exist and owe burnt and overfocus phenomenon; After guaranteeing certain high tolerance angle, the opening of the width of catoptron bar 4 and receiving trap 3 is suitable, and is perhaps wideer; Also can difference sunshine constantly be reflexed in the identical space, and also have rational tolerance angle, so can obtain higher gathering multiple reliably; Obtain better heat transfer medium temperature, reduce the desirable strength of device, reduce construction cost; Mirror field 2 is set to the catoptron bar of flat reflective mirror bar and special cylinder in the practical operation, when obtaining preferably catoptron bar optically focused, can control effectively and reduces cost; Focal line location arrangements receiving trap 3 in mirror field 2.
This Fresnel aggregation apparatus 1 can be applied to the photo-thermal field, and receiving trap 3 is linear heat collector, and is as shown in Figure 1; The thermal-collecting tube that receiving trap 3 is arranged by one or more adjacent parallel is formed like U type thermal-collecting tube 6 (Fig. 1 is not shown, sees Fig. 6); The import and export of each U type thermal-collecting tube are at same end, and are adjacent very near, can self-supporting temperature-sensing valve 14 be set at entrance point; Do not need the electronic closed loop control device, stable and reliable operation realizes simple; Detect the flow of outlet temperature with control U type thermal-collecting tube through self-supporting temperature-sensing valve 14, when guaranteeing the output of equilibrium temperature, the system's security of operation that also guarantees is simplified control, economic and reliable greatly.Maintenance and Repair space 10 is positioned at the lower bottom part of mirror field 2; The certain altitude apart from ground, for example 1.5 meters, with make things convenient for the staff below the mirror field or the back lower place to mirror field 2 inspection and maintenances; When minute surface was carried out cleaning, mirror bar angular setting was for erectting or the deflection below.So design can also be played the effect of moisture proof and dust protection with mirror field 2 relatively away from ground in addition; To a certain degree reduce the extinction effect of dust horizon to sunray; Can also be designed to parking lot or grain, flower planting base under the Maintenance and Repair space 10, and this Fresnel beam condensing unit can also be arranged in building roof or the like, make full use of the valuable land resource of growing tension.This Fresnel aggregation apparatus 1 also can be applied to the photovoltaic field; This moment, receiving trap 3 was the solar battery group of linear arrangement; The phototransformation that reflection is assembled becomes electric energy output, on the parallel direction of the solar battery group of linear arrangement property along the line focal line compound parabolic collector units (CPC) can be set further, need in this dimension, not carry out active tracking; Can carry out certain convergence to the light of focal line direction, form the accurate two-dimentional optically focused that is interrupted of arranging and receive along the focal line direction.
The cylinder design of the design in the Maintenance and Repair space 10 of the liftoff certain altitude of this Fresnel aggregation apparatus 1, the design of mirror field 2 arrangement of curves, catoptron bar 4; Than traditional Fresnel mirror field horizontal linear be arranged on the ground, have lot of advantages: for example, the dust disturbance that has reduced ground proximity is many; And the drawback that moisture is heavier; Sunray is avoided dust horizon direct incident Fresnel Jing Chang and receiving trap, reduces extinction effect, improves light gathering efficiency; Avoid dust horizon, have the longer cleaning frequency, operating personnel are easy and convenient when regularly cleaning, and operating environment is superior, and 2 beneath cool place districts patrol and examine and maintenance clean easily in the mirror field; Catoptron bar 4 width do not get between the catoptron bar for the cleaning personnel and design very wide, and therefore required cost of manufacture descends; Catoptron bar 4 is arranged to cylindrical structure, than flat reflective mirror bar, has certain convergence ability; Required when following the tracks of angle on a large scale, only need a catoptron bar to accomplish to owe burnt and overfocus gets final product, the width of catoptron bar 4 can be close with the width of receiving trap 3; Even wide a lot, the range of size broad has higher light concentrating times and better tolerance rate; And it is very wide that the overall width of every group of mirror field 2 needn't design, thus receiving trap 3 can arrange lower, for example 6 meters; Required support receiving trap 3 intensity lower, required cost can reduce; The inner sunken face of mirror field 2 is arranged; Be arranged in than horizontal linear in the tracing process of catoptron bar; Particularly the shading rate between the edge reflections mirror bar of mirror field 2 alleviates a lot (the light ratio minimizing that the back mirror bar reflects has been blocked at the back of front mirror bar), has increased the light gathering efficiency of catoptron bar; Mirror field 2 built on stilts design maintenance space for maintenances 10; When under satisfying operating personnel's fat city, easily accomplishing maintenance, safeguard and cleaning; Can also can fully utilize in the bottom in Maintenance and Repair space 10; The place of parking lot or other purposes is set, and this Fresnel beam condensing unit can also be arranged in the building roof, amplitude peak ground raising land utilization ratio.
Fig. 2 is the Fresnel aggregation apparatus integral arrangement synoptic diagram of a kind of embodiment of the present invention.Fresnel aggregation apparatus one-piece construction 1 shown in Figure 2 mainly comprises mirror field 2 and receiving trap 3; Mirror field 2 is made up of the catoptron bar 4 that is arranged in parallel; A plurality of catoptron bars 4 are rule arranged in arrays on 4-1,4-3 and the 4-5 east-west direction for example; The face type of catoptron bar 4 is a cylinder, and can be around turning axle 5 rotations of self, and different sunshines constantly reflex in the identical space; A plurality of catoptron bar 4-1,4-3 and 4-5 can converge at the sunshine reflection in the identical space, form common focal line; Focal line location arrangements receiving trap 3 in mirror field 2, the U type thermal-collecting tube 6 (seeing Fig. 6 for details) that receiving trap 3 is arranged by a plurality of adjacent parallel is formed.
Fig. 3 is that the mirror field structure of a kind of embodiment of the present invention is arranged synoptic diagram.Mirror as shown in Figure 3 field 2 comprises a plurality of catoptron bars 4, and for example 4-1,4-3,4-5,4-8,4-12 and 4-12 converge near receiving trap 3 (convergent point positions according to the postpone of rule cloth with sunray; Do not indicate among the figure); 4-1 as shown in Figure 3,4-3 is when residing position was the incident of sunshine certain angle when the residing position of 4-5 was sun light positive vertical incidence; When the catoptron bar 4 of three diverse locations is accomplished the reflection task, the location status that is in respectively; In the practical operation, catoptron bar 4 correspondences of any diverse location of synchronization are with sunray, and it is all inequality to accomplish near the residing location status of converging ray receiving trap 3; As shown in Figure 3; Mirror field 2 distributes along curve A originally; Arrange that in the certain width of the positive bottom of curve A and receiving trap 3 the one or more catoptron bar 4 that can change the position is so that vacating space; For example keep to the side to stand vertically, central passage 13 is set, current and completion work high above the ground in order to motor vehicles and machines; The width of the catoptron bar 4 in the mirror field 2 is along with the position different in width is inconsistent, and wide more the closer to the wide degree of mirror of the catoptron bar 4 of receiving trap 3 arranged just beneath, for example, catoptron bar 4-5 width is greater than the width of catoptron bar 4-1; For the unified of connecting rod mode of realizing a plurality of catoptron bars 4 links, curve A is fitted to two straight lines, straight line B and straight line C divide two groups of connecting rod 11 unified tracking independently.The off working state of mirror field 2 has been illustrated on Fig. 3 the right; Promptly clean state, unclean when the reflecting surface of mirror field 2, and certain sky is suitable follows the tracks of when obtaining sun power; Open cleaning model; With the catoptron bar in the mirror field 2 for example 4-8,4-10 and 4-12, changing its position is approximately perpendicular state, and it is cleaned.
Fig. 4 is the cross-sectional structure synoptic diagram of single catoptron bar of the present invention.Fig. 4 has illustrated the part-structure of catoptron bar 4 and receiving trap 3; The mirror surface of catoptron bar 4 is a cylinder among the figure, and has illustrated-75 °, and three kinds of sunray incidence reflection mirror bars 4 of 0,75 ° are corresponding to three different mirror-state; Be respectively I, II, III; Catoptron bar 4 is around turning axle 5 rotations of self, and the face type of catoptron bar 4 is a cylinder, has certain convergence ability; The North and South direction of mirror field 2 is arranged simultaneously, wider range of required tracking angle, and in the process that can rotate at the turning axle 5 around self; Exist and owe burnt and overfocus phenomenon, after guaranteeing certain high tolerance angle, the opening of the width of catoptron bar and receiving trap 3 is suitable; Even can be wideer, also can difference sunshine constantly be reflexed in the space of receiving trap 3, so can obtain higher gathering multiple; Obtain better heat transfer medium temperature, reduce the desirable strength of device, reduce construction cost.
Fig. 5 is that receiving trap of the present invention is the structural arrangement synoptic diagram of photovoltaic solar cell group.As shown in Figure 5; The structure of describing for ease the photovoltaic solar cell group rotates to be positive signal; Solar battery group is made up of a plurality of photovoltaic cells 15 that are connected into linear arrangement; Be arranged on the linear focal line position of Fresnel solar energy according to acquisition means; Two kinds of compound parabolic collector units of the solar battery group periphery of linear arrangement (CPC) 9 are respectively that property focal line parallel direction along the line is provided with and compound parabolic collector units (CPC) 9-1 of array, and the light of linear focal line vertical direction is carried out certain convergence; The vertical direction (radially) of property focal line along the line goes up compound parabolic collector units (CPC) 9-2 of setting and property focal line parallel direction array along the line; After sunray is incident to compound parabolic collector units (CPC) 9-2; Be arranged in compound parabolic collector units (CPC) 9 bottom photovoltaic cells 15 through reflexing to; So can realize increasing the tolerance performance on the linear focal line vertical direction; Can reduce simultaneously the number that on linear focal line parallel direction, receives photovoltaic cell, improve light concentrating times and utilization ratio, and the accurate two-dimentional optically focused that is interrupted that formation is arranged along the focal line direction receives; A plurality of compound parabolic collector units (CPC) aperture position can be provided with the thin glass 16 of high permeability and carry out capping; Form the confined space cavity with photovoltaic cell 15; The reflectance coating of protection compound parabolic collector units (CPC) 9 guarantees its service efficiency and improves its serviceable life.
Fig. 6 is that receiving trap of the present invention is the structural arrangement synoptic diagram of photo-thermal solar energy heat collection pipe.As shown in Figure 6, receiving trap 3 is made up of at least one U type thermal-collecting tube 6, and many U type thermal-collecting tubes 6 are formed side by side.Each U type thermal-collecting tube 6 comprises glass bushing 7, internal layer absorption tube 8 and outer compound parabolic collector units (CPC) 9 of arranging respectively.At same end, and each U type thermal-collecting tube 6 is provided with self-supporting temperature-sensing valve 14, do not need the electronic closed loop control device in the import and export of in service a plurality of U type thermal-collecting tubes 6 of implementing, and stable and reliable operation realizes simple; Detect outlet temperature through self-supporting temperature-sensing valve 14,, keep the heat transfer medium output and the security of operation of certain steady temperature through the size of temperature Control Flow; Internal layer absorption tube 8 inside of U type thermal-collecting tube 6 are heat transfer medium; Internal layer absorption tube 8 with good absorber coatings is arranged in the glass bushing 7; The inner space that both form keeps vacuum state; Or be in the dynamic vacuum state, to reduce the absorber coatings of inner convection heat losses of U type thermal-collecting tube and protection internal layer absorption tube, increase the service life; In order to improve the receiving ability of sunray, increase receiving trap 3 tolerance property, obtain higher optically focused multiplying power and the better homogeneity that receives of light, in the disposed outside compound parabolic collector units (CPC) 9 of U type thermal-collecting tube 6 devices; Its opening part can arrange that the thin glass 16 of high permeability carries out capping, forms the confined space cavity with glass bushing 7, and the reflectance coating of protection compound parabolic collector units (CPC) 9 guarantees its service efficiency and improves its serviceable life.
Obviously, under the prerequisite that does not depart from true spirit of the present invention and scope, the present invention described here can have many variations.Therefore, the change that all it will be apparent to those skilled in the art that all should be included within the scope that these claims contain.The present invention's scope required for protection is only limited described claims.
Claims (19)
1. Fresnel aggregation apparatus; Comprise mirror field (2), receiving trap (3) and access path (10); It is characterized in that: said mirror field (2) is made up of the catoptron bar (4) that is arranged in parallel more than; Said receiving trap (3) is arranged in parallel on said catoptron bar (4) focal line position, and said Maintenance and Repair space (10) is arranged on the lower bottom part of said anti-body Jing Jingchang (2).
2. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: the catoptron bar rotating shaft position of said catoptron bar (4) in the vertical cross-section of said mirror field (2) is along arrangement of curves.
3. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: the catoptron bar rotating shaft position of said catoptron bar (4) in the vertical cross-section of said mirror field (2) is along the matrix arrangement of curves.
4. a kind of Fresnel aggregation apparatus according to claim 3 is characterized in that: the matrix curve fitting that the catoptron bar rotating shaft position of said catoptron bar (4) in the vertical cross-section of said mirror field (2) arranged is two sections straight lines.
5. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: said catoptron bar (4) present position is more near the center under the receiving trap (3), and the width of the catoptron bar (4) that it is corresponding is wide more.
6. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that, the catoptron bar (4) that is positioned at centre position under the receiving trap (3) in the said mirror field (2) can form central passage (13) through remove temporarily.
7. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: said mirror field (2) is provided with connecting rod (11).
8. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: bottom, said mirror field (2) is provided with an arch support structures (12).
9. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: the reflecting surface type of said catoptron bar (4) is a cylinder.
10. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: said receiving trap (3) comprises linear heat collector.
11. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: said receiving trap (3) comprises at least one U type thermal-collecting tube (6), is arranged in juxtaposition between the said U type thermal-collecting tube (6).
12. a kind of Fresnel aggregation apparatus according to claim 10 is characterized in that: said linear heat collector comprises glass bushing (7), internal layer absorption tube (8) and compound parabolic collector units (9).
13. a kind of Fresnel aggregation apparatus according to claim 11 is characterized in that: said U type thermal-collecting tube (6) is provided with self-supporting temperature-sensing valve (14).
14. a kind of Fresnel aggregation apparatus according to claim 12 is characterized in that: the space that said glass bushing (7) and internal layer absorption tube (8) form keeps vacuum state.
15. a kind of Fresnel aggregation apparatus according to claim 12 is characterized in that: the space that said glass bushing (7) and internal layer absorption tube (8) form keeps the dynamic vacuum state.
16. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: said Maintenance and Repair space (10) apart from floor level more than or equal to 1.5 meters.
17. a kind of Fresnel aggregation apparatus according to claim 1 is characterized in that: said receiving trap (3) comprises the solar battery group of linear arrangement.
18. a kind of Fresnel aggregation apparatus according to claim 17 is characterized in that: on the parallel direction of the solar battery group of said linear arrangement property along the line focal line compound parabolic collector units (9) is set.
19. a kind of Fresnel aggregation apparatus according to claim 18 is characterized in that: said compound parabolic collector units (9) aperture position is provided with glass 16 and carries out capping, forms the confined space cavity with photovoltaic cell 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100561943A CN102681154A (en) | 2011-03-09 | 2011-03-09 | Fresnel focusing system |
| PCT/CN2012/071877 WO2012119528A1 (en) | 2011-03-09 | 2012-03-02 | Fresnel collector apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100561943A CN102681154A (en) | 2011-03-09 | 2011-03-09 | Fresnel focusing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102681154A true CN102681154A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100561943A Pending CN102681154A (en) | 2011-03-09 | 2011-03-09 | Fresnel focusing system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102681154A (en) |
| WO (1) | WO2012119528A1 (en) |
Cited By (1)
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|---|---|---|---|---|
| CN103808030A (en) * | 2012-11-15 | 2014-05-21 | 上海能辉电力科技有限公司 | Solar linear concentrating heat-collecting device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355998A (en) * | 2016-05-09 | 2017-11-17 | 秦皇岛市瑜阳光能科技有限公司 | A kind of stepped linear fresnel solar concentrator of Unequal distance |
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| WO2012119528A1 (en) | 2012-09-13 |
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