CN207162980U - A kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device - Google Patents
A kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device Download PDFInfo
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- CN207162980U CN207162980U CN201721052120.1U CN201721052120U CN207162980U CN 207162980 U CN207162980 U CN 207162980U CN 201721052120 U CN201721052120 U CN 201721052120U CN 207162980 U CN207162980 U CN 207162980U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
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Abstract
This patent discloses a kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device, including one-level reflective mirror, one-level reflective mirror support ring, two level reflective mirror, two level mirror support, tumbler, solar thermal collector；One-level reflective mirror is made up of the reflective mirror unit of multiple one-levels, each reflective mirror unit of one-level is strip concave mirror, the reflective mirror unit of one-level can surround rotary shaft and rotate, two level reflective mirror is made up of the reflective mirror unit of multiple two levels, each reflective mirror unit of two level is strip convex mirror, solar thermal collector is placed on the ground, using CPC slot type vacuum tube collectors.The solar energy heat collector has higher focusing ratio, the stability and wind resistance of solar thermal collector are good, the incident beam angle of solar energy is small simultaneously, there is higher focusing ratio and collecting efficiency with reference to CPC slot types vacuum tube collector, the apparatus structure is simple, cost is low, maintenance easy to install, and promotion potential is big.
Description
Technical field
A kind of solar energy heat collector is the utility model is related to, particularly a kind of two level curved surface Fresnel reflection formula solar energy
Vacuum heat collecting device, belong to technical field of solar utilization technique.
Background technology
The commercial development of solar energy and utilize an important development trend for being field of renewable energy, International Energy Agency
(IEA), it is expected that to the year two thousand forty solar power generation more than the 20% of world power supply will be accounted for.Concentration type solar generation technology
A kind of important way as Solar use, it has also become one of important directions of international heliotechnics development.China《Can be again
Raw energy development Eleventh Five-Year Plan》In also clearly propose, be on Ordos, inner Mongolia highland along the flat desert in the Yellow River, Gansu
The flat desert in Hexi Corridor, Hami area, Lhasa or Beijing periphery selection suitable area, carry out solar energy thermal-power-generating
Pilot work.
Using tracing collection type solar thermal collector, the heat energy of higher quality can be obtained.Therefore, can using focusing technology
To improve solar energy thermal transition temperature, it can realize that solar energy utilizes in applying for high temperature field in solar energy high temperature
In.Solar concentrating collector is divided into point focusing and the class of line focus two, and point focusing has dish-style and tower, the linear phenanthrene of line focus
Nie Er is reflective and slot type, can obtain higher thermal energy, be high-quality thermal source, belong to high temperature application.In solar energy high temperature profit
In, current main direction of studying is that the heating of medium temperature solar industry, solar refrigeration and air-conditioning and solar energy high temperature heat are sent out
Power technology.Linear Fresnel is reflective and slot type belongs to linear concentrator, has been carried out commercial applications at present.Dish-style and tower category
In point focusing, because cost is high and is constantly in demonstration phase with very high technical difficulty.Therefore, line-focusing solar thermal-arrest
Device occupies critical role in high temperature use aspects.
Linear Fresnel reflection heat collector is a kind of line-focusing solar heat collector.By multigroup horizontally disposed arrowband shape
Level crossing is formed, and every group of speculum has certain inclination angle, and the sunshine of incidence is reflexed on public focal line, receiver peace
At the common intersection of speculum, the solar energy of focusing is absorbed.Such device have big focusing ratio, low wind load stability and
The advantages that floor space is small, reduce the cost of investment and cost of electricity-generating of unit peak power.Linear Fresnel reflection collection hot charging
Put available for large-scale solar generating, small steam generation engineering, steam-type Refrigeration Engineering etc..
But linear Fresnel reflective solar system has the following disadvantages at present, have impact on the development of the system and pushes away
Wide application：1st, due to using level crossing, limiting the focusing ratio of the system, have impact on the Applicable temperature and collection of solar thermal collector
The thermal efficiency；2nd, heat collector is fixed in the air, be have impact on the stability and security of heat collector, is unfavorable for the arrangement and system of pipeline
Installation, while there is higher heat loss；3rd, the angle that light is reflexed on heat collector is excessive, adds to tracking accuracy
It is required that according to CPC secondary condensations, CPC focusing ratio also limit.
The content of the invention
The purpose of this utility model is to overcome above-mentioned existing dependent linearity Fresnel reflection formula solar energy heat collector
A kind of defect, there is provided the linear Fresnel reflective solar collection that focusing ratio is big, collecting efficiency is high, stability is good, cost is low
Thermal.
In order to solve the above technical problems, the technical scheme that this patent provides is：
Using two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device, including one-level reflective mirror, one-level reflective mirror
Support ring, two level reflective mirror, two level mirror support, tumbler, solar thermal collector；One-level reflective mirror is by multiple one-levels
Reflective mirror unit is formed, and each reflective mirror unit of one-level is strip concave mirror, the minute surface of the reflective mirror unit of one-level upward, one-level
The back of reflective mirror unit is provided with rotary shaft, and the reflective mirror unit of one-level can surround rotary shaft and rotate, multiple one-level reflective mirror lists
The rotary shaft of member is parallel, and rotary shaft is connected with tumbler, and one-level reflective mirror support ring is cased with each reflective mirror unit of one-level,
The top of one-level reflective mirror is provided with two level reflective mirror, and two level reflective mirror is made up of the reflective mirror unit of multiple two levels, and each two level is anti-
Light microscopic unit is strip convex mirror, and down, the long side of multiple reflective mirror units of two level is parallel for the reflective mirror unit minute surface of two level, two
Level reflective mirror is fixed on ground by two level mirror support, and solar thermal collector is located at the lower section of two level reflective mirror, too
Positive energy heat collector fixes on the ground.
As a kind of improvement of the present utility model, described tumbler includes worm gear, worm screw, motor, and worm gear, which is fixed, to be connected
The both ends of the rotary shaft of the reflective mirror unit of one-level are connected to, multiple worm gears are connected with worm engaging, worm screw and motor connection.
As a kind of improvement of the present utility model, described solar thermal collector uses CPC slot type vacuum tube collectors,
CPC slot types vacuum tube collector includes CPC reflectors, collector bracket, straight-through vacuum heat collecting tube；CPC reflectors it is reflective
Up, CPC reflectors are located at the lower section of straight-through vacuum heat collecting tube, and collector bracket is fixedly attached to CPC reflectors and straight
The both ends of formula vacuum heat collection pipe.
As a kind of improvement of the present utility model, described one-level reflective mirror includes 2 ~ 10 reflective mirror units of one-level, institute
The two level reflective mirror stated includes the number phase of 2 ~ 10 reflective mirror units of two level, the reflective mirror unit of one-level and the reflective mirror unit of two level
Together.
As a kind of improvement of the present utility model, the reflective mirror unit of described one-level is that arc surface concave mirror or parabola are recessed
Face mirror, the reflective mirror unit of described two level are arc surface convex mirror or parabola convex mirror.
Relative to prior art, the device described in the utility model has following advantage：1）The two level curved surface Fresnel
Reflective solar vacuum heat collecting device uses the design of secondary reflex, realizes the reduction of solar thermal collector height, will be solid
Fixed skyborne solar thermal collector is adjusted to, close to the position on ground, to improve the stability and security of heat collector, profit
In the installation of the arrangement and system of pipeline, while reduce heat loss caused by air flow；2）The two level curved surface Fresnel is anti-
The one-level reflective mirror for penetrating formula solar energy vacuum heat collecting device uses concave mirror, has convergence effect to reflection light, can improve phenanthrene
The focusing ratio of Nie Er reflective solar heat collectors, and then improve the medium temperature of solar energy utilization ratio and solar energy heat collector
Degree；3）The two level reflective mirror of the two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device uses convex mirror, will be by one-level
The converged light line reflection that reflective mirror comes is into less parallel light so that light be more uniformly distributed and concentrate by solar thermal collector
Receive；4）One-level reflective mirror and two level reflective mirror can reduce the area of two level reflective mirror using the design of concave-convex, and then drop
It is low that sunshine is blocked, improve solar energy utilization ratio；Also cause the incident beam angle for reflexing to solar thermal collector simultaneously
More concentrate, further improve the efficiency of solar thermal collector；5）Solar thermal collector employs CPC slot type vacuum tube heat collection functions
Device, the sunshine incided on CPC slot type vacuum tube collectors can be all reflexed on vacuum pipe heat-collecting pipe, improve solar energy
Focusing ratio and utilization rate, while also reduce requirement of the system to tracking accuracy, optical accuracy；Two-stage reflective mirror formed it is narrow enter
Firing angle degree sunshine also allows CPC to be designed to the heat collector with more high concentration ratio；6）Designed Fresnel reflection formula
Solar energy heat collector, secondary reflex mirror are fixed, and multiple first order reflection mirror units can synchronize tracking by a motor, tool
Have that focusing ratio is high, wind load is small, stability is high, cost simple in construction is low, has promotion potential.
Brief description of the drawings
Fig. 1 is the structural representation of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device；
Fig. 2 is the optical schematic diagram of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device；
Fig. 3 is the structural representation of tumbler；
Fig. 4 is the structural representation of CPC slot type vacuum tube collectors.
Wherein：1 it is the reflective mirror unit of one-level, 2 be one-level reflective mirror support ring, 3 be the reflective mirror unit of two level, 4 is two level
Mirror support, 5 be tumbler, 6 be solar thermal collector, 7 be sunray, 8 be worm gear, 9 be worm screw, 10 be electricity
Machine, 11 be rotary shaft, 12 be CPC reflectors, 13 be collector bracket, 14 be straight-through vacuum heat collecting tube.
Embodiment
Embodiment 1
It is reflective using two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device, including one-level referring to Fig. 1-Fig. 4
Mirror, one-level reflective mirror support ring 2, two level reflective mirror, two level mirror support 4, tumbler 5, solar thermal collector 6；One
Level reflective mirror is made up of the reflective mirror unit 1 of multiple one-levels, and each reflective mirror unit 1 of one-level is strip concave mirror, and one-level is reflective
Upward, the back of the reflective mirror unit 1 of one-level is provided with rotary shaft 11 to the minute surface of mirror unit 1, and the reflective mirror unit 1 of one-level, which can surround, to be turned
Moving axis 11 rotates, and the rotary shaft 11 of multiple reflective mirror units 1 of one-level is parallel, and rotary shaft 11 is connected with tumbler 5, each one-level
One-level reflective mirror support ring 2 is cased with reflective mirror unit 1, the top of one-level reflective mirror is provided with two level reflective mirror, two level reflective mirror
It is made up of the reflective mirror unit 3 of multiple two levels, each reflective mirror unit 3 of two level is strip convex mirror, the reflective mirror of mirror unit 3 of two level
Down, the long side of the reflective mirror unit 3 of multiple two levels is parallel, and two level reflective mirror is fixed to ground by two level mirror support 4
On face, solar thermal collector 6 is located at the lower section of two level reflective mirror, and solar thermal collector 6 fixes on the ground.
Embodiment 2
Referring to Fig. 1-Fig. 4, as it is of the present utility model it is a kind of improve, described tumbler 5 include worm gear 8, worm screw 9,
Motor 10, worm gear 8 are fixedly attached to the both ends of the rotary shaft 11 of the reflective mirror unit 1 of one-level, multiple worm gears 8 and the company of engagement of worm screw 9
Connect, worm screw 9 is connected with motor 10.
Embodiment 3
It is true using CPC slot types as a kind of improvement of the present utility model, described solar thermal collector referring to Fig. 1-Fig. 4
Blank pipe heat collector.CPC slot types vacuum tube collector includes CPC reflectors 12, collector bracket 13, straight-through vacuum heat collecting tube
14.CPC reflectors 12 it is reflective up, CPC reflectors 12 are located at the lower section of straight-through vacuum heat collecting tube 14, collector bracket
13 are fixedly attached to the both ends of CPC reflectors 12 and straight-through vacuum heat collecting tube 14.
Embodiment 4
Referring to Fig. 1-Fig. 4, as a kind of improvement of the present utility model, it is anti-that described one-level reflective mirror includes 2 ~ 10 one-levels
Light microscopic unit 1, described two level reflective mirror include the reflective mirror unit 3 of 2 ~ 10 two levels, and the reflective mirror unit 1 of one-level and two level are reflective
The number of mirror unit 3 is identical.
Embodiment 5
Referring to Fig. 1-Fig. 4, as a kind of improvement of the present utility model, the reflective mirror unit 1 of described one-level is that arc surface is recessed
Face mirror or parabola concave mirror, the reflective mirror unit 3 of described two level are arc surface convex mirror or parabola convex mirror.
Operation principle and process：
Referring to Fig. 1-Fig. 4, sunshine incides the reflective mirror unit 1 of one-level, reaches corresponding two level reflective mirror after reflection
Unit 3, because the reflective mirror unit 1 of one-level is concave mirror, light has convergence effect, therefore the area of the reflective mirror unit 3 of two level is less than
The reflective mirror unit 1 of one-level；Sunshine after the reflective mirror unit 3 of two level reflects incides solar thermal collector 6, two level reflective mirror
Unit 3 is convex mirror, can be approximately parallel light by the converged light line reflection that the reflective mirror unit 1 of one-level reflects back.This
The design of sample realizes：1st, the reflective mirror unit 1 of one-level improves Fresnel reflection formula solar energy heating to the convergence effect of light
The focusing ratio of device；2nd, the area of the reflective mirror unit 3 of two level is smaller, also smaller to blocking for sunshine；3rd, solar energy is reflexed to
The light angle of heat collector 6 is more concentrated.
When position of sun changes, the control of tumbler 5 drives the reflective mirror unit 1 of one-level to rotate, and ensures sunray 7
It can reach solar energy solar thermal collector 6 after reflection, when being the rotation tracking sun of speculum the characteristics of fresnel reflecting mirror,
Rotational angular velocity is identical, and the present apparatus employs the speculum of micro- curved surface, remains this feature, during tracking, the band of motor 10
Dynamic worm screw 9 rotates, and worm screw 9 drives worm gear 8 to rotate, and then drives the reflective mirror unit 1 of one-level to rotate.
Solar thermal collector 6 uses CPC slot type vacuum tube collectors, the sunray reflected through the reflective mirror unit 3 of two level
A part is directly received by straight-through vacuum heat collecting tube 14, and a part is after the reflection of CPC reflectors 12 by direct straight-through type vacuum
Thermal-collecting tube 14 is absorbed, and all light in the range of CPC acceptance angles can all be reflexed to straight-through vacuum heat collecting tube by CPC reflectors 12
On 14, the focusing ratio of solar energy heat collector can be improved, while also reduces the requirement to light reflection precision.
The utility model can also combine at least one in embodiment 2,3,4,5 technical characteristics with embodiment 1,
Form new embodiment.
It should be noted that above-described embodiment is only preferred embodiment of the present utility model, it is not used for limiting this reality
With new protection domain, the scope of protection of the utility model is defined by claims.
Claims (3)
- A kind of 1. two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device, it is characterised in that described two level curved surface phenanthrene alunite It is reflective that your reflective solar vacuum heat collecting device includes one-level reflective mirror, one-level reflective mirror support ring, two level reflective mirror, two level Mirror support bar, tumbler, solar thermal collector；One-level reflective mirror is made up of the reflective mirror unit of multiple one-levels, and each one-level is anti- Light microscopic unit is strip concave mirror, and upward, the back of the reflective mirror unit of one-level is provided with to be rotated the minute surface of the reflective mirror unit of one-level Axle, the reflective mirror unit of one-level can surround rotary shaft and rotate, and the rotary shaft of multiple reflective mirror units of one-level is parallel, and rotary shaft is with turning Dynamic device connects, and is cased with one-level reflective mirror support ring on each reflective mirror unit of one-level, the top of one-level reflective mirror is provided with two level Reflective mirror, two level reflective mirror are made up of the reflective mirror unit of multiple two levels, and each reflective mirror unit of two level is strip convex mirror, and two Down, the long side of multiple reflective mirror units of two level is parallel, and two level reflective mirror passes through two level reflective mirror branch for the reflective mirror unit minute surface of level Strut is fixed on ground, and solar thermal collector is located at the lower section of two level reflective mirror, and solar thermal collector fixes on the ground, institute The tumbler stated includes worm gear, worm screw, motor, and worm gear is fixedly attached to the both ends of the rotary shaft of the reflective mirror unit of one-level, more Individual worm gear is connected with worm engaging, worm screw and motor connection, and described solar thermal collector uses CPC slot type vacuum tube heat collection functions Device, CPC slot types vacuum tube collector include CPC reflectors, collector bracket, straight-through vacuum heat collecting tube；CPC reflectors it is anti- Upward, CPC reflectors are located at the lower section of straight-through vacuum heat collecting tube to smooth surface, collector bracket be fixedly attached to CPC reflectors and The both ends of straight-through vacuum heat collecting tube.
- 2. a kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device according to claim 1, its feature exist 2 ~ 10 reflective mirror units of one-level are included in described one-level reflective mirror, it is reflective that described two level reflective mirror includes 2 ~ 10 two levels Mirror unit, the reflective mirror unit of one-level are identical with the number of the reflective mirror unit of two level.
- 3. a kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device according to claim 1, its feature exist It is arc surface concave mirror or parabola concave mirror in the described reflective mirror unit of one-level, the reflective mirror unit of described two level is circular arc Face convex mirror or parabola convex mirror.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052120.1U CN207162980U (en) | 2017-08-22 | 2017-08-22 | A kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052120.1U CN207162980U (en) | 2017-08-22 | 2017-08-22 | A kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device |
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| Publication Number | Publication Date |
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| CN207162980U true CN207162980U (en) | 2018-03-30 |
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| CN201721052120.1U Active CN207162980U (en) | 2017-08-22 | 2017-08-22 | A kind of two level curved surface Fresnel reflection formula solar energy vacuum heat collecting device |
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