CN201497202U - Solar trough type light concentration and heat collection device - Google Patents
Solar trough type light concentration and heat collection device Download PDFInfo
- Publication number
- CN201497202U CN201497202U CN2009202318494U CN200920231849U CN201497202U CN 201497202 U CN201497202 U CN 201497202U CN 2009202318494 U CN2009202318494 U CN 2009202318494U CN 200920231849 U CN200920231849 U CN 200920231849U CN 201497202 U CN201497202 U CN 201497202U
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- circular arc
- reflex mirror
- secondary reflex
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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
Abstract
The utility model provides a solar trough type light concentration and heat collection device, which is especially applied in solar energy and high temperature systems and comprises a heat collection pipe (1), a plane first order reflector (2), a folded plane second order reflector (3), a composite arc first order reflector (4), a composite paraboloid second order reflector (5) and a support frame (6), wherein the heat collection pipe (1) is positioned inside the composite paraboloid second order reflector (5), the composite paraboloid second order reflector (5) is positioned above the composite arc first order reflector (4), and the support frame (3) is positioned below the composite arc first order reflector (4) and used for the fixation of the composite arc first order reflector (4). The employment of the composite paraboloid second order reflector results in less stricter requirements for the light concentration and focusing of the first order reflector as well as for the tracking accuracy. The use of the composite arc first order reflector leads to increased flexibility in design. The combined use of the plane mirror design and the folded plane design contributes to increased light utilization rate.
Description
Technical field
The utility model relates to a kind of solar groove type light-condensing and heat-collecting device, especially is applied in the solar energy medium and high temperature system, belongs to the solar energy light gathering and heat collecting technical field.
Background technology
In order to obtain high-temperature steam, electric energy etc., researcher is explored and is studied the optically focused principle in solar energy conversion and the utilization, develops groove type solar heat utilization technology, tower type solar heat utilization technology and disc type solar energy heat utilization technology.Groove type solar heat utilization technology is a mature technique the most wherein, has become the most possible a kind of means that substitute conventional energy resource in all renewable energy technologies.The concentrating collector of conventional groove type solar heat utilization system generally adopt parabolic concentrator with the light reflect focalization to thermal-collecting tube, the heating intraductal working medium.This concentrating collector optically focused is lower, and the working medium temperature is generally below 400 ℃; The large-area parabolic difficulty of making, cost is higher; And be difficult to guarantee in thermal-collecting tube absorbing surface scope, tracking accuracy is had relatively high expectations through the focal line behind the parabolic concentrator reflect focalization; Thermal-arrest tube wall heat dissipation capacity is big.Also the someone has adopted circular arc mirror condenser cheaply, but its characteristic with paraxial rays coking makes that the relative altitude of beam condensing unit is very high, and the optically focused band is wide and be abandoned.In order to improve the optically focused ratio, Japan adopts level crossing and paraboloidal mirror mixing condenser system, many level crossings with sunlight reflected to same paraboloidal mirror, to thermal-collecting tube, this mixing concentrating collector has improved the optically focused ratio through the paraboloidal mirror reflect focalization, but level crossing and paraboloidal mirror need two cover tracking systems, precision prescribed is higher, complex structure, difficulty of processing is big, the cost height.The U.S. has the scholar to propose to adopt the parabolic concentrator focused ray to secondary composite parabolic concentrator (Compound parabolic concentrator abbreviates CPC as), and reflect focalization is to thermal-collecting tube once more.Advantage is that two-stage reflecting and focusing heat accumulator is placed on the same support system, uses same set of tracking system, and than big, tracking accuracy requires to reduce than single-stage concentrating collector optically focused.But there is also the paraboloidal manufacturing difficulty of large tracts of land, the problem that cost is high; And because the restriction of the acceptance angle of composite parabolic, the parabolic short focal length advantage of circular arc does not relatively exist yet; The compound parabolic face condenser has blocked part light, has reduced the optically focused ratio; The paraboloidal design of monolithic lacks the free degree of design.
Summary of the invention
Technical problem: the purpose of this utility model is to overcome the existing defective of above-mentioned existing slot light collection technology, a kind of solar groove type light-condensing and heat-collecting device is proposed, the first order reflection mirror changes into by multi-section circular arc or folding plane and constituting, and the secondary reflex mirror is the composite parabolic speculum.Mounting plane first order reflection mirror above composite parabolic secondary reflex mirror is installed folding plane secondary reflex mirror in the outer end of compound circular arc primary reflector.
Technical scheme: it is parabolic to cut down finished cost and to increase the free degree of design that solar groove type light-condensing and heat-collecting device of the present utility model adopts multi-section circular arc or folding plane to replace, in order to utilize the light that is blocked by CPC, adopting level crossing is the first order reflection mirror, and the folding level crossing is the mode of secondary reflex mirror.When light enters in the aperture along the assembly axis direction, fraction light reflects into into the compound parabolic face condenser through two secondary mirror, most of converge in the compound parabolic face condenser, enter light in the compound parabolic face condenser directly or through reflecting on the final arrival thermal-collecting tube through compound circular arc or the mirroring of folding planar concentrating.
This concentrator comprises thermal-collecting tube, plane first order reflection mirror, folding plane secondary reflex mirror, compound circular arc primary reflector, composite parabolic secondary reflex mirror, bracing frame; Thermal-collecting tube is positioned at the inside of composite parabolic secondary reflex mirror, the minute surface opening that composite parabolic secondary reflex mirror is positioned at the top of compound circular arc primary reflector and composite parabolic secondary reflex mirror down, plane first order reflection mirror be positioned at composite parabolic secondary reflex mirror directly over, folding plane secondary reflex mirror is connected with compound circular arc primary reflector, bracing frame is positioned at the following of compound circular arc primary reflector and is used for fixing compound circular arc primary reflector, and stretches out support bar from the middle slit of compound circular arc primary reflector and support composite parabolic secondary reflex mirror.
Folding plane secondary reflex mirror or be arc surface secondary reflex mirror.
Between the every arc reflector of compound circular arc primary reflector or do not connect.
Compound circular arc primary reflector or be folding plane first order reflection mirror.
Composite parabolic secondary reflex mirror is outer optically focused composite parabolic secondary reflex mirror or interior optically focused composite parabolic secondary reflex mirror.
Beneficial effect:
What 1) the first order reflection mirror adopted is the compound circular arc speculum, also can adopt speculums such as parabola, compound folding plane, on cost and difficulty of processing, parabola＞compound circular arc＞compound folding plane, on optically focused coking effect, parabola＞compound circular arc＞compound folding plane.
Owing to adopted compound paraboloid secondary reflector, it has converges the characteristic of all acceptance angles with interior incident light, so just make that entering the compound parabolic face condenser after the first order reflection in the acceptance angle scope gets final product, reduced the requirement of first order reflection mirror optically focused coking, and, also make and adopt compound circular arc, compound folding plane to become possibility as the first order reflection mirror to the requirement of tracking accuracy.Be that the first order reflection mirror adopts parabola, reduced the requirement of tracking accuracy and mirror surface accuracy; Adopt compound folding plane, reduced the difficulty of cost and processing; Adopt compound circular arc, can have above two kinds advantage simultaneously.
2) adopted compound circular arc, made the free degree of design increase greatly,, can reach near paraboloidal effect by changing the number and the different separately diameters thereof of arc section; By changing the position of each arc section, can satisfy increases the optically focused ratio, reduces demands such as processing cost; Change the distance between the arc section, can reduce the influence of blast minute surface and support system.
3) adopted the secondary reflection technology, can be so that optically focused be than increasing, reaching by the acceptance angle that changes CPC axially can be at optically focused than adjusting in the larger context.
4) be provided with level crossing above the compound parabolic face condenser and reflect, be provided with corresponding secondary reflex mirror in the compound circular arc section, it can adopt parabola, circular arc, folding plane etc., and is less because of area, and what adopt here is the mode on folding plane.Such design can also converge to the light that drops on compound parabolic face condenser upper surface in the compound parabolic face condenser, reduces the aperture area of concentrator under identical optically focused ratio, has improved light utilization efficiency.
5) thermal-collecting tube is positioned at compound parabolic face condenser inside, and the radiation and the heat loss through convection of pipe outer wall are much smaller with respect to common groove type paraboloid concentrator.
A whole set of design science, simple, reasonable, spotlight effect is good, is convenient to large-scale industrial production, and cost is low, easily promotes.
Description of drawings
The perspective view of Fig. 1 solar groove type light-condensing and heat-collecting device,
Have among the figure: thermal-collecting tube 1, plane first order reflection mirror 2, folding plane secondary reflex mirror 3, compound circular arc primary reflector 4, composite parabolic secondary reflex mirror 5, bracing frame 6,
Fig. 2 is the design index path of solar groove type light-condensing and heat-collecting device,
Fig. 3 is the design index path of solar groove type light-condensing and heat-collecting device (improvement project 1),
Fig. 4 is the design index path of solar groove type light-condensing and heat-collecting device (improvement project 2),
Fig. 5 is the design index path of solar groove type light-condensing and heat-collecting device (improvement project 3),
Fig. 6 utilizes the part reflection of light mirror design index path that is blocked by CPC,
Fig. 7 a is interior optically focused compound parabolic concentrator structural representation,
Fig. 7 b is outer optically focused compound parabolic concentrator structural representation,
Have among the figure: speculum 7, cloche 8, vacuum 9, receiver 10, interior optically focused compound parabolic concentrator 11, outer optically focused compound parabolic concentrator 12.
The specific embodiment
The compound curved surface that the utility model adopts and the concentrating collector of secondary reflection principle comprise thermal-collecting tube 1, plane first order reflection mirror 2, folding plane secondary reflex mirror 3, compound circular arc primary reflector 4, composite parabolic secondary reflex mirror 5, bracing frame 6; Thermal-collecting tube 1 is positioned at the inside of composite parabolic secondary reflex mirror 5, the minute surface opening that composite parabolic secondary reflex mirror 5 is positioned at the top of compound circular arc primary reflector 4 and composite parabolic secondary reflex mirror 5 down, plane first order reflection mirror 2 be positioned at composite parabolic secondary reflex mirror 5 directly over, folding plane secondary reflex mirror 3 is connected with compound circular arc primary reflector 4, bracing frame 3 is positioned at the following of compound circular arc primary reflector 4 and is used for fixing compound circular arc primary reflector 4, and stretches out support bar from compound circular arc primary reflector 4 middle slits and support composite parabolic secondary reflex mirror 5.Folding plane secondary reflex mirror 3 or be arc surface secondary reflex mirror.Between the every arc reflector of compound circular arc primary reflector 4 or do not connect.Compound circular arc primary reflector 4 or be folding plane first order reflection mirror.Composite parabolic secondary reflex mirror 5 is outer optically focused composite parabolic secondary reflex mirror or interior optically focused composite parabolic secondary reflex mirror.
This groove type solar concentrator makes sunshine incide the face of acceptance vertically by tracking system, fall light on the compound circular arc primary reflector (4) in reflection converges to composite parabolic secondary reflex mirror (5), to make the light that enters (5) and its axle clamp angle maximum acceptance angle during design less than it, according to the characteristic of composite parabolic speculum, last so all light all will arrive on the thermal-collecting tube (1).All speculums and thermal-collecting tube are fixing by bracing frame (6).Adopt two sections circular arcs as first order reflection mirror (2), acceptance angle be 60 ℃ the compound parabolic face condenser as the light schematic diagram of secondary reflex mirror (3) as shown in Figure 2.
This groove type solar concentrator makes sunshine incide the face of acceptance vertically by tracking system, fall light on the compound circular arc primary reflector (4) in reflection converges to composite parabolic secondary reflex mirror (5), light directly or through reflection arrives on the thermal-collecting tube (1).All speculums and thermal-collecting tube are fixing by bracing frame (6).Adopt two sections circular arcs as first order reflection mirror (2),, perhaps, can the design (4) of compound circular arc primary reflector be improved in order to use planar bracket in order to increase the optically focused ratio, its design drawing such as Fig. 3, its shortcoming is that the part light loss is arranged in the daylighting scope.
This groove type solar concentrator makes sunshine incide the face of acceptance vertically by tracking system, fall light on the compound circular arc primary reflector (4) in reflection converges to composite parabolic secondary reflex mirror (5), light directly or through reflection arrives on the thermal-collecting tube (1).All speculums and thermal-collecting tube are fixing by bracing frame (6).Adopt two sections circular arcs as first order reflection mirror (2), in order to save manufacturing cost, compound circular arc primary reflector (4) can only adopt a kind of circular arc of size, but the position of each circular arc will be adjusted, its design drawing such as Fig. 4, shortcoming is that optically focused is than comparing less than normal with the design that circular arc connects together.
This groove type solar concentrator makes sunshine incide the face of acceptance vertically by tracking system, falls light on the first order reflection mirror (4) in reflection converges to composite parabolic secondary reflex mirror (5), and light directly or through reflection arrives on the thermal-collecting tube (1).All speculums and thermal-collecting tube are fixing by bracing frame (6).Replace compound circular arc as first order reflection mirror (4) with compound folding plane, can so that processing technology further simplify.Its design drawing such as Fig. 5.
This groove type solar concentrator makes sunshine incide the face of acceptance vertically by tracking system, the light of falling compound parabolic face condenser top reflexes to folding plane secondary reflex mirror (3) through plane first order reflection mirror (2), and reflection enters composite parabolic secondary reflex mirror (5) once more.All the other fall light on the compound circular arc primary reflector (4) in reflection converges to composite parabolic (CPC) secondary reflex mirror (5), to make the light that enters the compound parabolic face condenser and its axle clamp angle maximum acceptance angle during design less than it, according to the characteristic of closing parabolic mirror, last so all light all will arrive on the thermal-collecting tube (1).All speculums and thermal-collecting tube are fixing by bracing frame (6).In order to utilize the part light that is blocked by the compound parabolic face condenser, adopted additional secondary reflection mirror, also can adopt circular arc or parabola, its design index path such as Fig. 6.
Embodiment 6
This groove type solar concentrator makes sunshine incide the face of acceptance vertically by tracking system, fall light on the compound circular arc primary reflector (4) in reflection converges to composite parabolic secondary reflex mirror (5), light directly or through reflection arrives on the thermal-collecting tube (1).All speculums and thermal-collecting tube are fixing by bracing frame (6).More than design all is outer optically focused compound parabolic face condenser for composite parabolic secondary reflex mirror (5), because the space between heat collector glass tube and the receiving tube makes light that partial loss be arranged.So it relatively is fit to the situation than the large tracts of land speculum, can reduce cost.Light collecting compound parabolic face condenser in it can being made into.Its optical loss is relative with heat loss less, can be heated to higher temperature to working medium, but cost is higher.So optically focused compound parabolic face condenser in outer optically focused compound parabolic face condenser can being changed under a stable condition is seen Fig. 7.
Claims (5)
1. a solar groove type light-condensing and heat-collecting device is characterized in that this concentrator comprises thermal-collecting tube (1), plane first order reflection mirror (2), folding plane secondary reflex mirror (3), compound circular arc primary reflector (4), composite parabolic secondary reflex mirror (5), bracing frame (6); Thermal-collecting tube (1) is positioned at the inside of composite parabolic secondary reflex mirror (5), the minute surface opening that composite parabolic secondary reflex mirror (5) is positioned at the top of compound circular arc primary reflector (4) and composite parabolic secondary reflex mirror (5) down, plane first order reflection mirror (2) be positioned at composite parabolic secondary reflex mirror (5) directly over, folding plane secondary reflex mirror (3) is connected with compound circular arc primary reflector (4), bracing frame (6) is positioned at the following of compound circular arc primary reflector (4) and is used for fixing compound circular arc primary reflector (4), and stretches out support bar from the middle slit of compound circular arc primary reflector (4) and support composite parabolic secondary reflex mirror (5).
2. a kind of solar groove type light-condensing and heat-collecting device according to claim 1, it is characterized in that rolling over plane secondary reflex mirror (3) is arc surface secondary reflex mirror.
3. a kind of solar groove type light-condensing and heat-collecting device according to claim 1 is characterized in that closely not connecting between the every arc reflector of compound circular arc primary reflector (4).
4. a kind of solar groove type light-condensing and heat-collecting device according to claim 1 is characterized in that compound circular arc primary reflector (4) is folding plane first order reflection mirror.
5. a kind of solar groove type light-condensing and heat-collecting device according to claim 1 is characterized in that composite parabolic secondary reflex mirror (5) is outer optically focused composite parabolic secondary reflex mirror or interior optically focused composite parabolic secondary reflex mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202318494U CN201497202U (en) | 2009-09-07 | 2009-09-07 | Solar trough type light concentration and heat collection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202318494U CN201497202U (en) | 2009-09-07 | 2009-09-07 | Solar trough type light concentration and heat collection device |
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| CN201497202U true CN201497202U (en) | 2010-06-02 |
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| CN2009202318494U Expired - Fee Related CN201497202U (en) | 2009-09-07 | 2009-09-07 | Solar trough type light concentration and heat collection device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588230A (en) * | 2011-01-06 | 2012-07-18 | 胡达 | Solar-thermal generating system |
| CN102588228A (en) * | 2011-01-06 | 2012-07-18 | 胡达 | Photovoltaic solar-thermal composite generating system |
| CN102798230A (en) * | 2012-08-14 | 2012-11-28 | 中国华能集团清洁能源技术研究院有限公司 | Novel CPC secondary reflection device and fixing device thereof |
| CN103062922A (en) * | 2013-01-28 | 2013-04-24 | 中国石油大学(华东) | Two-stage convergent solar energy concentrator system with decompressing and thermal stress reducing functions |
| CN103322696A (en) * | 2013-05-08 | 2013-09-25 | 南京溧马新能源科技有限公司 | Thrice focusing solar energy receiving device |
| CN109297204A (en) * | 2018-09-30 | 2019-02-01 | 江苏大学 | A kind of miniature matrix form beam condensing unit |
| CN109682090A (en) * | 2017-10-19 | 2019-04-26 | 西北农林科技大学 | A kind of compound curved surface trunnion axis tracking solar thermal collector |
| CN113404473A (en) * | 2021-06-01 | 2021-09-17 | 常州大学 | Solar-based double-focusing light steam oil production system |
-
2009
- 2009-09-07 CN CN2009202318494U patent/CN201497202U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588230A (en) * | 2011-01-06 | 2012-07-18 | 胡达 | Solar-thermal generating system |
| CN102588228A (en) * | 2011-01-06 | 2012-07-18 | 胡达 | Photovoltaic solar-thermal composite generating system |
| CN102798230A (en) * | 2012-08-14 | 2012-11-28 | 中国华能集团清洁能源技术研究院有限公司 | Novel CPC secondary reflection device and fixing device thereof |
| CN102798230B (en) * | 2012-08-14 | 2014-04-16 | 中国华能集团清洁能源技术研究院有限公司 | Novel CPC secondary reflection device and fixing device thereof |
| CN103062922A (en) * | 2013-01-28 | 2013-04-24 | 中国石油大学(华东) | Two-stage convergent solar energy concentrator system with decompressing and thermal stress reducing functions |
| CN103062922B (en) * | 2013-01-28 | 2014-09-10 | 中国石油大学(华东) | Two-stage convergent solar energy concentrator system with decompressing and thermal stress reducing functions |
| CN103322696A (en) * | 2013-05-08 | 2013-09-25 | 南京溧马新能源科技有限公司 | Thrice focusing solar energy receiving device |
| CN109682090A (en) * | 2017-10-19 | 2019-04-26 | 西北农林科技大学 | A kind of compound curved surface trunnion axis tracking solar thermal collector |
| CN109297204A (en) * | 2018-09-30 | 2019-02-01 | 江苏大学 | A kind of miniature matrix form beam condensing unit |
| CN109297204B (en) * | 2018-09-30 | 2024-03-19 | 江苏大学 | Miniature matrix type condensing device |
| CN113404473A (en) * | 2021-06-01 | 2021-09-17 | 常州大学 | Solar-based double-focusing light steam oil production system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20120907 |