CN203928448U - A kind of gradient type linear fresnel solar utilizes system - Google Patents
A kind of gradient type linear fresnel solar utilizes system Download PDFInfo
- Publication number
- CN203928448U CN203928448U CN201420287076.2U CN201420287076U CN203928448U CN 203928448 U CN203928448 U CN 203928448U CN 201420287076 U CN201420287076 U CN 201420287076U CN 203928448 U CN203928448 U CN 203928448U
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- speculum
- receiver
- plane
- thermal
- jing chang
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Classifications
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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
- 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 utility model relates to a kind of gradient type linear fresnel solar and utilizes system, and it comprises multiple thermal-arrest unit that laterally connect side by side, and each thermal-arrest unit comprises Jing Chang, bracing frame, upper bracket and receiver; Jing Chang comprises multiple speculums of uniformly-spaced arranging, speculum is rotatably connected on the bracing frame that is positioned at its both sides, in mirror field, the rotating shaft of all speculums is parallel to each other and is positioned at same plane, plane is an inclined-plane, inclined-plane and horizontal plane become the angle of 27 °～60 °, receiver is supported on the top of Jing Chang by the upper bracket being connected with bracing frame, the length direction of receiver is parallel to the rotating shaft of speculum in mirror field.The utility model adopts the Jing Chang with horizontal plane with certain inclination angle, the shade causing to each other can reduce speculum with track of sun angle changing time or block, thereby ensure that receiver has comparatively full collector area, farthest reduce cosine effect loss, according to statistics, the utility model system average annual collecting efficiency under the condition of identical floor space improves more than 35%, and heat-collecting capacity improves more than 15%.
Description
Technical field
The utility model relates to a kind of solar energy utilization system, and particularly a kind of gradient type linear fresnel solar utilizes system.
Background technology
Linear Fresnel system is a kind of ubiquitous system in solar energy heat utilization field, it is mainly by linear Fresnel speculum (Linear Fresnel Reflector, LFR), receiver and tracking sun drive unit composition, speculum is in a row arranged abreast, under the drive of drive unit, follow the orbiting motion of the sun, in the situation that having sunlight, all the time sunshine is reflexed on receiver, then by receiver by solar energy energy transform into heat energy.
Conventionally fresnel reflecting mirror is horizontal on the ground, and receiver is placed on the centre of speculum field.
This system is the curved mirror involving great expense without use with respect to an advantage of paraboloid trough type photo-thermal system, use line focus effect with the level crossing of simulation Fresnel Lenses principle, simpler cost is installed lower, but distinct issues are because level crossing is along with the track translation-angle of the sun, when level crossing and horizontal plane angle are when larger, cause its side speculum part not receive incident light, cause shade; Or reverberation is blocked and is not beaten on concentrator by side speculum, causes and blocks.This all can cause the sunshine that concentrator obtains to reduce, and drags down conversion efficiency, and if though the spacing that adds significantly large reflective mirror can reduce and blocks and shade, but can cause reflective mirror area in unit are to reduce, final conversion efficiency still can not get improving.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of gradient type linear fresnel solar that blocks effectively to improve conversion efficiency and can increase again land utilization ratio that can reduce and utilize system.
For achieving the above object, the present invention is by the following technical solutions: a kind of gradient type linear fresnel solar utilizes system, it is characterized in that: it comprises multiple thermal-arrest unit that laterally connect side by side, and described in each, thermal-arrest unit comprises Jing Chang, bracing frame, upper bracket and receiver; Described Jing Chang comprises multiple speculums of uniformly-spaced arranging, described speculum is rotatably connected on the support frame as described above that is positioned at its both sides, in described mirror field, the rotating shaft of all described speculums is parallel to each other and is positioned at same plane, described plane is an inclined-plane, described inclined-plane and horizontal plane become the angle of 27 °～60 °, described receiver is supported on the top of described Jing Chang by the described upper bracket being connected with support frame as described above, the length direction of described receiver is parallel to the rotating shaft of speculum described in described mirror field.
Also comprise that one is arranged on the angle adjusting mechanism of Jing Chang bottom surface, described angle adjusting mechanism comprises a stock, multiple quarter butt, two connecting rods, a transfer bar mechanism, threaded screw rod pair and a motor; The back side of the vertical firm connection in one end of quarter butt speculum described in each described in each, the other end of all described quarter butts is uniformly-spaced hinged on described stock; Described in two, one end of connecting rod is fastened together, and the other end is fastenedly connected respectively the middle part at described stock; The hinged described transfer bar mechanism of the link of connecting rod described in two; Described transfer bar mechanism comprises that an outer tube and is slidably connected at the interior bar in described outer tube, and described outer tube is hinged on support frame as described above, and the link of connecting rod is hinged described in one end of described interior bar and two; Described threaded screw rod pair comprises that a leading screw and being fastenedly connected with the output shaft of described motor is threaded in the nut on described leading screw, and the other end of described interior bar is connected with described fastening nuts.
Described speculum in described mirror field is level crossing or micro-curved globoidal mirror, and described receiver is the combination of compound parabolic concentrator and thermal-collecting tube, and described compound parabolic concentrator reaches sunshine secondary reflection on thermal-collecting tube.
On support frame as described above, be provided with a windbreak or the net that keeps out the wind, the top edge of described windbreak or the net that keeps out the wind connects described Jing Chang and is positioned at the edge of highest point, and the lower limb of described windbreak or the net that keeps out the wind connects the bottom of support frame as described above.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the utility model adopts the Jing Chang with horizontal plane with certain inclination angle, the shade causing to each other can reduce speculum with track of sun angle changing time or block, thereby ensure that receiver has comparatively full collector area, farthest reduce cosine effect loss, according to statistics, the utility model system average annual collecting efficiency under the condition of identical floor space improves more than 35%, and heat-collecting capacity improves more than 15%.2, the utility model adopts horizontal plane to have the Jing Chang at certain inclination angle, and the spacing that can effectively dwindle speculum, makes heat collector can design more compactly, thereby reduces the rolled steel dosage of support, reduces system cost cost.3, the utility model adopts the Jing Chang with horizontal plane with certain inclination angle, makes the following range of the tracking system of controlling the speculum tracking sun be reduced to the half of about conventional system following range, and fault rate is lower.4, the utility model arranges a windbreak or the net that keeps out the wind at the back side of Jing Chang, has increased the wind loading rating of system, is that the stability of system operation is higher.
Brief description of the drawings
Fig. 1 is the structural representation of a thermal-arrest unit of the present utility model;
Fig. 2 is the structural representation of angular transformation of the present utility model mechanism;
Fig. 3 is optically focused schematic diagram of the present utility model;
Fig. 4 is use view of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
The utility model comprises multiple thermal-arrest unit 10 that laterally connect side by side, and as shown in Figure 1, each thermal-arrest unit 10 comprises mirror field 11, bracing frame 12, upper bracket 13 and receiver 14.Mirror field 11 comprises multiple speculums of uniformly-spaced arranging, speculum is rotatably connected on the bracing frame 12 that is positioned at its both sides, in mirror field 11, the rotating shaft of all speculums is parallel to each other and is positioned at same plane, and this plane is an inclined-plane, and itself and horizontal plane become the angle of 27 °～60 °.Receiver 14 is supported on the top of mirror field 11 by the upper bracket 13 being connected with bracing frame 12, its length direction is parallel to the rotating shaft of speculum in mirror field 11.
As shown in Figure 2, thermal-arrest unit 10 also comprises that one is arranged on the angle adjusting mechanism 15 of Jing Chang bottom surface, and angle adjusting mechanism 15 comprises a stock 16, multiple quarter butt 17, two connecting rods 18, a transfer bar mechanism 19, the secondary (not shown) of a threaded screw rod and a motor (not shown).The back side of vertical firm each speculum of connection in one end of each quarter butt 17, the other end of all quarter butts 17 is uniformly-spaced hinged on stock 16.One end of two connecting rods 18 is fastened together, and the other end is fastenedly connected respectively at the middle part of stock 16, the hinged transfer bar mechanism 19 of the link of two connecting rods 18.Transfer bar mechanism 19 comprises that an outer tube 191 and is slidably connected at the interior bar 192 in outer tube 191, and outer tube 191 is hinged on bracing frame 12, and the link of one end of interior bar 192 and two connecting rods 18 is hinged; Threaded screw rod pair comprises that a leading screw and being fastenedly connected with the output shaft of motor is threaded in the nut on leading screw, and the other end of interior bar 192 is connected with fastening nuts.The operation principle of angle adjusting mechanism 15 is as follows: motor does rectilinear motion by the interior bar 192 in the moving transfer bar mechanism 19 of threaded screw rod subband, and speed is approximately 0.5～1mm/s, and simultaneously interior bar 192 can the pin joint rotation with bracing frame 12 around outer tube 191.After electric motor starting, the interior bar 192 in transfer bar mechanism 19 promotes two connecting rods 18, and the variation of connecting rod 18 positions causes that the rotation of stock 16 and quarter butt 17, quarter butt 17 drive speculum rotation, thereby realizes the tracking to sunray.In mirror field 11, every speculum initial settling angle degree difference, but the angular dimension rotating in tracing process is identical, thereby drive the rotation of all speculums by a stock 16.
In above-described embodiment, the speculum in mirror field 11 can be level crossing, is also can micro-curved globoidal mirror; Receiver 14 is the combination of compound parabolic concentrator (CPC) and thermal-collecting tube, and compound parabolic concentrator reaches sunshine secondary reflection on thermal-collecting tube.Thermal-collecting tube energy admittance deep fat and so on medium, after sunshine is heated medium, the medium of intensification and cryogenic media (as water) carry out heat exchange, recycling heat energy; Thermal-collecting tube also can be replaced with concentrating solar battery plate, is directly electric energy by transform light energy.
In above-described embodiment, a windbreak or the net that keeps out the wind can be set on bracing frame 12, the top edge connection mirror field 11 of windbreak or the net that keeps out the wind is positioned at the edge of highest point, and the lower limb of windbreak or the net that keeps out the wind connects the bottom of bracing frame 12.Windbreak or the net that keeps out the wind can keep off (north) wind effectively, thereby improve the wind loading rating of solar energy utilization system and reduce the thermal loss of thermal-collecting tube, increase the stability of a system (China North China, the Northwest are taking northerly as main).
Main beneficial effect of the present utility model is as follows:
As shown in Figure 3, because the liftoff ball of the sun is enough far away, can think that the sunshine that the earth receives is directional light, reflect reverberation is got to compound parabolic concentrator by mirror field 11.Each piece speculum width is a, and the centre-to-centre spacing of adjacent two mirrors is b, by mirror field integral inclination α, than the tiling Jing Chang of available technology adopting, can be the in the situation that of identical blocking, type minifier spacing (b-a), improves the power output of identical mirror scene when long-pending.
The utility model is applied on the building of south-north direction conventionally, as shown in Figure 4, the utility model thing is arranged, 11 inclined planes, mirror field south, after every mirror places by initial angle, mirror field 11 just can enter receiver 14 by sunshine reflection all the time, in the time that sun irradiation angle is sent out variation, drive motors is by the inclination angle of speculum in angle adjusting mechanism 15 adjusting mirror fields 11, make receiver 14 receive incessantly the sunshine that 11 reflections of mirror field come, wherein, the tracking mode of system is that calendar is followed the tracks of and photoelectric sensor tracking compound use (belongs to the mature technology of this area, do not repeat).
The utility model only describes with above-described embodiment; structure, setting position and the connection thereof of each parts all can change to some extent; on the basis of technical solution of the present invention; all improvement of indivedual parts being carried out according to the principle of the invention and equivalents, all should not get rid of outside protection scope of the present invention.
Claims (5)
1. gradient type linear fresnel solar utilizes a system, it is characterized in that: it comprises multiple thermal-arrest unit that laterally connect side by side, and described in each, thermal-arrest unit comprises Jing Chang, bracing frame, upper bracket and receiver;
Described Jing Chang comprises multiple speculums of uniformly-spaced arranging, described speculum is rotatably connected on the support frame as described above that is positioned at its both sides, in described mirror field, the rotating shaft of all described speculums is parallel to each other and is positioned at same plane, described plane is an inclined-plane, described inclined-plane and horizontal plane become the angle of 27 °～60 °, described receiver is supported on the top of described Jing Chang by the described upper bracket being connected with support frame as described above, the length direction of described receiver is parallel to the rotating shaft of speculum described in described mirror field.
2. a kind of gradient type linear fresnel solar as claimed in claim 1 utilizes system, it is characterized in that: also comprise that one is arranged on the angle adjusting mechanism of Jing Chang bottom surface, described angle adjusting mechanism comprises a stock, multiple quarter butt, two connecting rods, a transfer bar mechanism, threaded screw rod pair and a motor; The back side of the vertical firm connection in one end of quarter butt speculum described in each described in each, the other end of all described quarter butts is uniformly-spaced hinged on described stock; Described in two, one end of connecting rod is fastened together, and the other end is fastenedly connected respectively the middle part at described stock; The hinged described transfer bar mechanism of the link of connecting rod described in two; Described transfer bar mechanism comprises that an outer tube and is slidably connected at the interior bar in described outer tube, and described outer tube is hinged on support frame as described above, and the link of connecting rod is hinged described in one end of described interior bar and two; Described threaded screw rod pair comprises that a leading screw and being fastenedly connected with the output shaft of described motor is threaded in the nut on described leading screw, and the other end of described interior bar is connected with described fastening nuts.
3. a kind of gradient type linear fresnel solar as claimed in claim 1 utilizes system, it is characterized in that: the described speculum in described mirror field is level crossing or micro-curved globoidal mirror, described receiver is the combination of compound parabolic concentrator and thermal-collecting tube, and described compound parabolic concentrator reaches sunshine secondary reflection on thermal-collecting tube.
4. a kind of gradient type linear fresnel solar as claimed in claim 2 utilizes system, it is characterized in that: the described speculum in described mirror field is level crossing or micro-curved globoidal mirror, described receiver is the combination of compound parabolic concentrator and thermal-collecting tube, and described compound parabolic concentrator reaches sunshine secondary reflection on thermal-collecting tube.
5. a kind of gradient type linear fresnel solar as claimed in claim 1 or 2 or 3 or 4 utilizes system, it is characterized in that: on support frame as described above, be provided with a windbreak or the net that keeps out the wind, the top edge of described windbreak or the net that keeps out the wind connects described Jing Chang and is positioned at the edge of highest point, and the lower limb of described windbreak or the net that keeps out the wind connects the bottom of support frame as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420287076.2U CN203928448U (en) | 2014-05-30 | 2014-05-30 | A kind of gradient type linear fresnel solar utilizes system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420287076.2U CN203928448U (en) | 2014-05-30 | 2014-05-30 | A kind of gradient type linear fresnel solar utilizes system |
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| Publication Number | Publication Date |
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| CN203928448U true CN203928448U (en) | 2014-11-05 |
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| CN201420287076.2U Active CN203928448U (en) | 2014-05-30 | 2014-05-30 | A kind of gradient type linear fresnel solar utilizes system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449045A (en) * | 2018-04-24 | 2018-08-24 | 北京兆阳光热技术有限公司 | A kind of speculum module production method, structure, light focusing unit structure and power station |
| CN108954866A (en) * | 2018-09-30 | 2018-12-07 | 浙江宝威电气有限公司 | A kind of opto-thermal system acquisition equipment |
| CN109282507A (en) * | 2018-09-30 | 2019-01-29 | 浙江宝威电气有限公司 | A kind of solar-thermal generating system |
-
2014
- 2014-05-30 CN CN201420287076.2U patent/CN203928448U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449045A (en) * | 2018-04-24 | 2018-08-24 | 北京兆阳光热技术有限公司 | A kind of speculum module production method, structure, light focusing unit structure and power station |
| CN108954866A (en) * | 2018-09-30 | 2018-12-07 | 浙江宝威电气有限公司 | A kind of opto-thermal system acquisition equipment |
| CN109282507A (en) * | 2018-09-30 | 2019-01-29 | 浙江宝威电气有限公司 | A kind of solar-thermal generating system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100026 No. 2 Tuanjiehu North Road, Beijing, Chaoyang District Patentee after: Beijing Jingyi Film Machinery Equipment Co.,Ltd. Address before: 100026 No. 2 Tuanjiehu North Road, Beijing, Chaoyang District Patentee before: BEIJING INSTITUTE OF FILM MACHINERY |
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| CP01 | Change in the name or title of a patent holder |