CN107368097A - Tower type solar collection system based on optically focused heliostat array - Google Patents
Tower type solar collection system based on optically focused heliostat array Download PDFInfo
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- CN107368097A CN107368097A CN201610314480.8A CN201610314480A CN107368097A CN 107368097 A CN107368097 A CN 107368097A CN 201610314480 A CN201610314480 A CN 201610314480A CN 107368097 A CN107368097 A CN 107368097A
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- daylighting
- minute surface
- solar energy
- mirror
- energy collecting
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
Abstract
The present invention relates to a kind of tower type solar collection system based on optically focused heliostat array, mainly include, the daylighting array and the solar energy collecting tower of responsible solar energy collecting being made up of daylighting modular unit.Be square distribution, solar energy collecting tower of whole daylighting array is located at array centre.Each daylighting modular unit structure is identical, is formed by n*n block daylightings minute surface.The rotation of all daylighting minute surfaces in three motor control units.Daylighting minute surface is square concave mirror, has a small concave mirror above its focus, the light of convergence is converted into directional light and reflexed at the level crossing of its bottom centre.The level crossing can reflex to light on the plane mirror above daylighting mirrored sides.The speculum can do two axles by motor control and rotate, to ensure accurately to reflex to light on solar energy collecting window.Whole system is tracked by daylighting minute surface to day, the linkage of mirror surface, is finally reached the efficient purpose collected to solar energy.
Description
Technical field
It is more particularly to a kind of that daylighting is carried out by optically focused heliostat and the tower type solar collection system of the collection to solar energy can be completed to sun real-time tracking, by multiple reflections the present invention relates to a kind of tower type solar collection system.
Background technology
The problems such as environmental pollution, resource exhaustion, non-renewable be present in traditional fossil energy.Cleaning, the New Energy Industry of low-carbon are greatly developed as the common recognition of countries in the world today.And the environmental problem that the utilization of solar energy can efficiently solve the energy problem in the whole world and result from.
Three class systems are mainly included at present to the Collection utilization of solar energy：Tower type solar collection system, disc type solar energy collection system and groove type solar collection system.Three kinds of systems have the advantages of respective and shortcoming, are unable to processing solar energy collecting efficiency, system manufacturing cost and the equilibrium relation of scale construction well.
Using primary event, every piece of daylighting minute surface in daylighting array directly reflexes to sunray at the solar energy collecting window for collecting tower the tower solar energy collecting system of tradition.It is not that every piece of minute surface is all just less efficient facing to the sun, Solar use in system work process.For large-scale traditional tower solar energy collecting system, generally require to build very high solar energy collecting tower to collect the sunray that daylighting mirror-reflection comes farther out.
Traditional general scale is smaller of disc type solar energy collection system, it is made up of mutual independent daylighting minute surface one by one.Each daylighting minute surface has oneself independent sun tracker and solar energy collecting system.For the Solar use engineering of scale, no matter from the perspective of the reliability of construction cost, work management, regular maintenance or system, traditional disc type solar energy collection system is all inefficient.
Traditional groove type solar collection system is line focus form, and lighting efficiency is relatively low.Large-scale trough system must have very long thermal-collecting tube in addition, and this can bring great energy loss.Daylighting groove is long, and corresponding thermal-collecting tube is also very long, causes the wind loading rating of system weaker.
As described above, traditional solar energy collecting system is all of inadequate achievement in the control of the solar energy collecting efficiency, cost of system and wind loading rating.
The content of the invention
For various problems existing for above-mentioned existing system, the invention provides a kind of tower type solar collection system based on optically focused heliostat array to attempt to be solved.Its daylighting minute surface is the less side's dish minute surface of depth, and focusing ratio is higher, minute surface wind loading rating is good.Minute surface rotates the locating and tracking realized to the sun by two axles, and its center of rotation is located above minute surface, so as to which the center of mirror surface structure is relatively low, capability of anti-wind is good.The height of incidence that light eventually enters into solar energy collecting window can be effectively forced down by the multiple reflections of what minute surface, so as to reduce the construction height of solar energy collecting tower.In addition, the operational reliability of system can be effectively improved by modularization construction, facilitate system maintenance management, the overall manufacturing cost of reduction.
The technical scheme is that：A kind of tower type solar collection system based on optically focused heliostat array, including daylighting module array and solar energy collecting tower.
Specifically, if above-mentioned daylighting module array is made up of stem structure identical daylighting modular unit, each modular unit is square, the also square distribution of whole array.Wherein, each daylighting modular unit forms by n*n block daylightings minute surface.Solar energy collecting tower is mainly responsible for the solar energy centralized collection work of whole system, has two solar energy collecting windows up and down on tower.
Preferably, daylighting minute surface is square dish-style minute surface, its reflecting surface is parabola concave surface, vertical view is square.The minute surface that can facilitate whole daylighting array using the minute surface of the type is arranged, facilitates the splicing and installation between minute surface.The gap between whole daylighting array minute surface can be reduced, improves lighting efficiency.
Preferably, each modular unit sets three motors, the pulling of control major-minor line is rotated by motor, the unified of daylighting minute surface rotates in modular unit to realize.Wherein, two motors of landscape configuration, the pulling of horizontal two main lines is controlled respectively.One motor of longitudinal direction configuration, the rotation of minute surface longitudinal direction is controlled by line wheel.By being uniformly controlled to daylighting minute surface rotation, the management and maintenance of system are facilitated, and reduce cost.
Preferably, daylighting minute surface depth is smaller, shape is flat, minute surface area is smaller, so as to reduce its windward side, the wind loading rating of minute surface is improved.
Preferably, the center of rotation of daylighting minute surface is located above its focus, the center of gravity of whole minute surface can be effectively reduced, improves its wind loading rating.
Preferably, this solar energy collecting system only builds a solar energy collecting tower, to unified centralized collection solar energy.This preferably realizes control cost and the purpose for maintaining easily, managing.
Preferably, solar energy collecting tower is provided with two solar energy collecting windows, the solar energy that near-end and distal end daylighting minute surface collect can be collected respectively.In addition, when a solar energy collecting window breaks down wherein, another solar energy collecting window can be very good to shoulder the collection work of solar energy, improve the reliability of system.
A kind of solar energy collecting method based on optically focused heliostat array and collection tower, specific steps include：
Sun location tracking system judges sun present orientation by sun position sensor, by controlling the rotation of three motors of transverse and longitudinal to drive the movement of modular unit transverse direction two main lines and a main line of longitudinal direction respectively.Three main clues then drive the by-pass of each daylighting minute surface to pull daylighting minute surface respectively, so as to ensure each lighting mirror in face of the sun is round-the-clock, real-time alignment.
Lighting mirror is completed after the tracking alignment of the sun, the reflective concave surface Jing Chu that sunshine was arrived above the focus of lighting mirror face later through the convergence reflection of daylighting minute surface carries out the second secondary reflection.Reflection of the sunray again through daylighting minute surface bottom reflection level crossing afterwards is come at rotatable double mirror.Controlled by rotation of the control circuit to two micromachines, Double sided mirror turns over to be penetrated light after appropriate angle and finally reflex at the solar energy collecting window on solar energy collecting tower in the future, completes the collection process of whole solar energy.
The beneficial effects of the invention are as follows：The daylighting end of this solar energy collecting system uses the dish-style minute surface with light collection ability, compares the tower solar energy collecting system of tradition, focusing ratio is higher, improves the solar energy collecting efficiency of system.It in addition, daylighting minute surface is square, can effectively reduce the space between adjacent daylighting minute surface, improve lighting efficiency.
The daylighting minute surface of this solar energy collecting system can realize the real-time alignment to the sun, all the time all just facing to the sun, to gather sunray to greatest extent.Due to the daylighting minute surface moment face sun, primary event can not complete the collection to sunray, so the system realizes the collection to sunray by the way of more minute surfaces link multiple reflections.Collected by way of multiple reflections solar energy can effectively in reduction system light-conductive pipeline use, greatly reduce the manufacturing cost of system.
This solar energy collecting system transfer sun light, collection solar energy by the way of multiple reflections, the height for the light for injecting solar energy collecting window can be effectively forced down by the angle adjustment of mirror surface, so as to reduce the design height of solar energy collecting tower.
This solar energy collecting system can combine steam turbine, Stirling engine etc., realize cleaning, solar power generation efficiently, inexpensive.
Brief description of the drawings
Fig. 1 is the overall structure diagram of this solar energy collecting system.
Fig. 2 is the light conduction schematic diagram of this solar energy collecting system.
When Fig. 3 is that system whether there is tertiary reflex minute surface, the contrast schematic diagram of design height needed for tower is collected.
Fig. 4 is that daylighting minute surface passes through the schematic diagram that tertiary reflex minute surface carries out light transmission in the case of diverse location and angle.
Fig. 5 is the structural representation of single daylighting unit minute surface.
Fig. 6 is the structural representation of daylighting minute surface rotation section.
Fig. 7 is daylighting unit module and the structural representation of transmission system.
Fig. 8 is the Making programme schematic diagram of square dish-style light-gathering concave-surface mirror.
Embodiment
It is the overall structure diagram of this solar energy collecting system as shown in Figure 1.The center of whole solar energy collecting system is solar energy collecting tower 1, and surrounding is the array 3 that daylighting modular unit is formed.The system can be divided into by function, position of sun twin shaft all-weather traction control system, light collection portion and light collection device three parts.
First, position of sun twin shaft all-weather traction control system includes sunray position sensor, control circuit and transmission mechanism.After system starts, solar tracking control system is first begin to run.The real-time azimuthal of the now sun can be obtained by sunray position sensor, control system is acted accordingly after obtaining bearing data by the motor 404 ~ 406 in circuit control daylighting modular unit 4.Motor 404 rotate after, rotating shaft 403 rotate therewith, the rotation of rotating shaft 403 and then drive longitudinal main line 506 to be moved.Longitudinal main line 506 is by pulling longitudinal by-pass so that power transmission shaft 5042 rotates, with this final rotation for driving the generation of daylighting minute surface around axis of pitch.Motor 405,406 is connected by drive line with all daylighting minute surfaces 5 in modular unit 4 respectively.Motor 405,406 realizes the series connection to every row daylighting minute surface by directive wheel 402, to reach the purpose for being uniformly controlled each row transverse direction main line 507.After motor 405,406 rotates, laterally it is driven main line 507 and is moved therewith.Horizontal main line 507 is connected with the horizontal by-pass of each minute surface respectively in the top of every piece of daylighting minute surface 5 by major-minor binding site 505.Two laterally transmission main line 507 is parallel to each other, the direction of motion pulls laterally outer ring realization of two by-passes respectively to daylighting minute surface driving section 504 on the contrary, it is moved, so as to complete the rotation around longitudinal axis of daylighting minute surface 5.The final each daylighting minute surface 5 driven in modular unit 4 of action of motor 404 ~ 406 realizes the alignment to the sun.
It is illustrated in figure 2 the light conduction schematic diagram during operation of this solar energy collecting system.First, sunshine is radiated on daylighting concave mirror 5, and daylighting concave mirror 5 is penetrated on the first order reflection concave mirror 501 above light collection to its main shaft future.Because reflective concave surface mirror 501 is located at the focus rear of daylighting concave mirror 5, light can be changed into directional light and reflex on the secondary reflex level crossing 502 of daylighting concave mirror bottom centre by reflective concave surface mirror 501.Fix, have fixed angle relative to the main shaft of daylighting concave mirror 5 in the position of secondary reflex level crossing 502.Light is reflexed on the rotatable tertiary reflex minute surface 503 of the top of daylighting concave mirror 5 by secondary reflex mirror 502 again.During being somebody's turn to do, daylighting concave mirror 5, first order reflection concave mirror 501, the relative position of secondary reflex minute surface 502, angle are fixed all the time.By tracking of the daylighting concave mirror 5 to the sun, can ensure sunray being irradiated on three-level rotary reflector face 503 by above triple reflection.Rotatable tertiary reflex minute surface 503 is by two independent controls of micro-step motor 5031, with the pivoting that both direction can also be carried out daylighting concave mirror 5.Daylighting concave mirror 5 is to carry out the once tracking to the sun in every five minutes, and the angle that tertiary reflex minute surface 503 should rotate then is calculated by control circuit.And then the rotation of tertiary reflex level crossing 503 is driven to enter to ensure that light is final in the solar energy collecting window 2 that center is collected on tower 1 by controlling stepper motor 5031 to rotate.Solar energy collecting tower 1 can apply to a variety of occasions such as thermal-arrest, illumination, generating after being collected into the sunray of high-energy.
The specific embodiment of the present invention is these are only, is not intended to limit the invention, protection scope of the present invention is defined by the claims.The various change made on the premise of present inventive concept is not departed from each falls within protection scope of the present invention.
Claims (10)
1. a kind of tower type solar collection system based on optically focused heliostat array, including：
Daylighting mirror array, solar energy collecting tower；
It is characterized in that：If the daylighting mirror array is made up of stem structure identical daylighting modular unit；The solar energy collecting tower, it is provided with two solar energy collecting windows of height.
A kind of 2. tower type solar collection system based on optically focused heliostat array according to claim 1, it is characterised in that：The daylighting modular unit arranges by n rows n, common n*n daylighting minute surface forms；Each daylighting mirror surface structure is identical；The adjacent both sides of the daylighting modular unit are provided with three motors altogether, and by the control of three motors, the daylighting minute surface in modular unit can realize the twin shaft all-weather traction to the sun.
A kind of 3. tower type solar collection system based on optically focused heliostat array according to claim 1, it is characterised in that：The kind of drive of the daylighting modular unit is stepped transmission, and its two horizontal motor connects two horizontal main lines and provides power, a longitudinal motor connection for it and drive longitudinal main transmission line respectively；Each mirror unit is connected by by-pass with main transmission line again, so as to realize the rotation of minute surface by the pulling of main transmission line.
A kind of 4. tower type solar collection system based on optically focused heliostat array according to claim 2, it is characterised in that：The daylighting minute surface is square dish-style minute surface；Its manufacturing process is：Dish-style minute surface is taken, direction of square is inscribed along it is cut and can obtain square dish-style minute surface.
A kind of 5. tower type solar collection system based on optically focused heliostat array according to claim 3, it is characterised in that：The horizontal main line is moved in the opposite direction respectively, and each daylighting minute surface is connected by two by-passes with two main lines；One end of two by-passes is individually fixed in different on main line 2 points, and left and right ends of the other end respectively with daylighting mirror surface support are connected；Longitudinal main line is connected by line wheel with longitudinal by-pass.
A kind of 6. tower type solar collection system based on optically focused heliostat array according to claim 4, it is characterised in that：There is one piece of reflecting concave mirror mutually fixed with the supporting structure of daylighting minute surface above the focus of the daylighting minute surface, there is a reflective plane mirror to be fixed on minute surface bottom at daylighting minute surface bottom centre below, be in a fixed angle with top reflecting concave mirror.
A kind of 7. tower type solar collection system based on optically focused heliostat array according to claim 4, it is characterised in that：The support of the daylighting level crossing by solar energy collecting tower side have one can two axles rotate two-sided planar mirror；The level crossing is located on the annular support being made up of inner and outer ring, and a micromachine is separately installed with its inner and outer ring.
A kind of 8. tower type solar collection system based on optically focused heliostat array according to claim 4, it is characterised in that：The square dish-style minute surface depth is smaller, shape is flat, and its center of rotation is located above whole minute surface.
A kind of 9. tower type solar collection system based on optically focused heliostat array according to claim 4, it is characterised in that：The rotating part of the daylighting minute surface is universal ring structure, by it is outer, in, interior shellring shape structure form, its outer shroud with mirror surface support be rigidly connected, inner ring is connected with module carrier.
10. a kind of solar energy collecting method based on optically focused heliostat array and collection tower, specific steps include：
Sun location tracking system judges sun present orientation by sun position sensor, by controlling the rotation of three motors of transverse and longitudinal to drive the movement of modular unit transverse direction two main lines and a main line of longitudinal direction respectively；Three main clues then drive the by-pass of each daylighting minute surface to pull daylighting minute surface respectively, so as to ensure each lighting mirror in face of the sun is round-the-clock, real-time alignment；Lighting mirror is completed after the tracking alignment of the sun, the reflective concave surface Jing Chu that sunshine was arrived above the focus of lighting mirror face later through the convergence reflection of daylighting minute surface carries out the second secondary reflection, and reflection of the sunray again through daylighting minute surface bottom reflection level crossing afterwards is come at rotatable double mirror；Controlled by rotation of the control circuit to two micromachines, Double sided mirror turns over to be penetrated light after appropriate angle and finally reflex at the solar energy collecting window on solar energy collecting tower in the future, completes the collection process of whole solar energy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610314480.8A CN107368097A (en) | 2016-05-13 | 2016-05-13 | Tower type solar collection system based on optically focused heliostat array |
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| CN201610314480.8A CN107368097A (en) | 2016-05-13 | 2016-05-13 | Tower type solar collection system based on optically focused heliostat array |
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| CN107368097A true CN107368097A (en) | 2017-11-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112035922A (en) * | 2020-08-25 | 2020-12-04 | 中船文化科技(北京)有限公司 | Intelligent shelter layout planning system and method, electronic equipment and storage medium |
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- 2016-05-13 CN CN201610314480.8A patent/CN107368097A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112035922A (en) * | 2020-08-25 | 2020-12-04 | 中船文化科技(北京)有限公司 | Intelligent shelter layout planning system and method, electronic equipment and storage medium |
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Application publication date: 20171121 |
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| WD01 | Invention patent application deemed withdrawn after publication |