CN204003299U - A kind of efficient tower type solar power system - Google Patents
A kind of efficient tower type solar power system Download PDFInfo
- Publication number
- CN204003299U CN204003299U CN201420373327.9U CN201420373327U CN204003299U CN 204003299 U CN204003299 U CN 204003299U CN 201420373327 U CN201420373327 U CN 201420373327U CN 204003299 U CN204003299 U CN 204003299U
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- China
- Prior art keywords
- heat absorber
- pylon
- tooth bar
- gear
- lowering
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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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
-
- 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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- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
The utility model discloses a kind of efficient tower type solar power system, comprise pylon, heat absorber, heliostat group, heat absorber is installed on pylon, and described heat absorber is removable to be arranged on pylon, and this heat absorber can move up and down within the specific limits along pylon; Concrete, described heat absorber carries out the adjustment of position height by lowering or hoisting gear; Described lowering or hoisting gear comprises tooth bar, gear and hydraulic station; Described tooth bar is fixedly arranged on pylon, and heat absorber is arranged on described tooth bar by gear, and under the driving of hydraulic station, heat absorber is moved up and down within the specific limits along tooth bar by gear.The utility model is simple in structure, with low cost, be suitable for extensive popularization, by the adjustable lifting structure in heat absorber position, according to sun altitude changing value, move the position height of the heat absorber on pylon by lowering or hoisting gear, all the time make the cosine effect of Jing Chang minimum, and then reach the object that reduces cosine effect.
Description
Technical field
The utility model relates to the Height Adjustable high efficiency tower type solar power generation system of a kind of novel heat absorber.
Background technique
Traditional tower-type solar thermal power generating system, comprise the equipment such as condenser field, heat absorber and generator, condenser field is for collecting and converge sunlight, light is all converged to the absorption mouth place of heat absorber, heat absorber absorbs light ray energy, and is converted into multi-form heat, is transferred to generator, the heat of collection is converted into electric energy by generator, and output.
The efficiency that tower-type solar thermal power generating system is transformed into generated energy by solar energy is lower, is the highlyest also difficult to reach 20%.Wherein mainly can be divided into the impact of 3 aspects: mirror field efficiency, heat absorber transformation efficiency and generator generating efficiency, wherein, mirror field efficiency is generally 50%～65%, and heat absorber transformation efficiency is 60%～85%, and rear end generating efficiency is between 25%～40%.
In the efficiency calculation of mirror field, from light incident, loss in efficiency comprises that light transmition loss, cosine effect, the reflection of reflector silverskin, eyeglass block mutually successively, the absorption efficiency of mirror field tracking error and heat absorber.In the time of the tower-type solar thermal power generating system design of carrying out, in order to realize the object that improves terminal generating efficiency, need to consider from above-mentioned each factor.
Common tower Jing Chang, heat absorber is fixed on top of tower, due to sun altitude each in season difference larger, Winter Solstice the meridian hour sun altitude very little, and the Summer Solstice the meridian hour elevation angle very large, look over along light, the relative position of heat absorber and Jing Chang changes, and corresponding mirror field cosine losses is not identical yet.In order to reduce cosine losses, improve mirror field efficiency, while conventionally designing heat absorber height, adopt the elevation angle of equinox to design, ensure that like this cosine losses is smaller in the annual most of the time, but during to Solstice, cosine losses is larger.
Summary of the invention
In view of the defect that prior art exists, the utility model provides a kind of Height Adjustable tower-type solar thermal power generating system of heat absorber that reduces system cosine losses.
To achieve these goals, the technical solution of the utility model is:
A kind of efficient tower type solar power system, comprises pylon, heat absorber, heliostat group, and heat absorber is installed on pylon, it is characterized in that: described heat absorber is removable to be arranged on pylon, and this heat absorber can move up and down within the specific limits along pylon.
Further, in the time of the tracing collection of mirror field, according to sun altitude changing value and system requirements, described heat absorber carries out the adjustment of position height by lowering or hoisting gear; Gear and hydraulic station that described lowering or hoisting gear comprises tooth bar, matches with tooth bar; Described tooth bar is fixedly arranged on pylon, and heat absorber is arranged on described tooth bar by described gear, and under the driving of hydraulic station, heat absorber is moved up and down within the specific limits along tooth bar by gear.
The utility model, than common mirror field system, in the time that sun altitude changes, can move by lowering or hoisting gear the position height of the heat absorber on pylon, makes all the time the cosine effect of Jing Chang minimum, and then reaches the object that reduces cosine effect.By calculating, if use this structure monthly all heat absorber height to be adjusted once, can make cosine effect decline 30%～40%, drop to 6%～7% by original 10%, can improve terminal generating efficiency 0.3%～0.5%.If all adjust per hour, efficiency increase is more obvious.
If only use a heat absorber on pylon, because the Jing Chang of heliostat group is large, can cause the mirror field cosine losses of innermost circle and outmost turns large, a kind of novel tower system that can further extend out by the way,, by multiple heat absorbers are set on pylon, cuts apart Jing Chang according to order correspondence from inside to outside, heat absorber apart from tower Jing Chang far away corresponding to eminence, heat absorber from the Jing Chang close to tower corresponding to lower, reduces the cosine losses of each heliostat, thereby raises the efficiency.
Compared with prior art, the beneficial effects of the utility model:
The utility model is simple in structure, with low cost, be suitable for extensive popularization, by the adjustable structure in heat absorber position, according to sun altitude changing value, move the position height of the heat absorber on pylon by shifter, all the time make the cosine effect of Jing Chang minimum, and then reach the object of the impact that reduces cosine effect.
Brief description of the drawings
Fig. 1 is the structural representation of cosine effect;
Fig. 2 is common tower-type electricity generation system architecture schematic diagram;
Fig. 3 is common tower-type electricity generation system architecture schematic diagram of the present utility model;
Fig. 4 is the tower-type electricity generation system architecture schematic diagram that extends out a kind of many heat absorbers;
Fig. 5 is lifting device structure simplified schematic diagram one of the present utility model;
Fig. 6 is lifting device structure simplified schematic diagram two of the present utility model.
In figure: 1, heat absorber, 2, heliostat, 2.1, minute surface normal, 2.2, the transversal section of light, 3, pylon, 4, heliostat group, 5, tooth bar, 6, gear, 7, hydraulic station; A, Winter Solstice position of sun, b, the Autumnal Equinox position of sun, c, the Summer Solstice position of sun.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1, cosine losses corresponding to cosine effect:
Heliostat surface normal 2.1 becomes ∠ A with incident ray, heliostat surface and light truncation surface 2.2 are angled ∠ A ', because two limits of ∠ A are vertical with two limits of ∠ A ' respectively, so:
∠A＝∠A’
The minute surface area of setting solar eyepiece is S, and the optical cross section of actual reflection is long-pending:
S1＝S*cos(A)
Produced the loss of (S-S1) area:
S-S1＝S*(1-cos(A))
Because heliostat will reflex to incident ray heat absorber ingress all the time, so heliostat central point and heat absorber entrance center line are defined as reflection ray, the angle of incident ray and reflection ray is 2* ∠ A.
By formula analysis, ∠ A is larger, and the cosine losses of bringing is larger; In the time of ∠ A=0, incident ray overlaps with reflection ray, and point-blank, its cosine losses is 0 the sun, heat absorber, heliostat center.So want to reduce the impact of cosine effect, just need to be by regulating ∠ A to realize.
Fig. 2 is traditional tower-type electricity generation system construction drawing, choose the meridian hour analysis, because heat absorber height is fixed, when the height and position of the sun is in heliostat group 4---when heliostat field central position and heat absorber line of centres top, can obtain now cosine effect minimum.B is as shown in the figure the position of the sun in the Autumnal Equinox, and this Jing Chang cosine effect in the time of the Autumnal Equinox is less, and when arriving position a or Summer Solstice when the c of position in Winter Solstice, its cosine effect can obviously increase.
The designed tower type solar power generation system of the utility model for the foregoing reasons, comprise pylon 3, heat absorber 1, heliostat group 4, heat absorber 1 is installed on pylon 3, and making that described heat absorber 1 is removable to be arranged on pylon 3, this heat absorber 1 can move up and down within the specific limits along pylon 3.
Fig. 3 is the tower-type electricity generation system construction drawing that adopts the utility model structure, and it adopts rack gear, and---lowering or hoisting gear (concrete structure is illustrated by Fig. 5, Fig. 6)---can adjust heat absorber 1 position up and down.According to analysis above, if we can ensure position of sun, heat absorber position and heliostat group 4 all the time---all the time point-blank, its cosine effect has obvious reduction at heliostat field center.According to the difference of sun elevation angle at noon, the height of heat absorber is regulated accordingly, ensure that all the time cosine effect is less.If but only adopt single heat absorber in reality owing to being subject to many-sided restriction, in diagram, more difficult move to best position the Summer Solstice; If Jing Chang is larger simultaneously, can cause the mirror field cosine losses of innermost circle and outmost turns large, be provided with multiple heat absorber structural types as described in Figure 4, because front-seat Jing Chang has larger cosine effect to the higher heat absorber in position, so the heat absorber that front-seat corresponding position is lower, same reason, after the higher heat absorber of solar eyepiece corresponding position that is ranked, make to reduce in this way cosine effect, reach the object that improves mirror field efficiency.
Fig. 5, Fig. 6 are the utility model---the optimal way that heat absorber moves, drives the mode of tooth bar 5, gear 6 transmissions, and then drives heat absorber 1 to move up and down by hydraulic station 7; In the time of the tracing collection of mirror field, according to sun altitude changing value and system requirements, the adjustment of the position height that described heat absorber 1 is undertaken by lowering or hoisting gear; Described lowering or hoisting gear comprises tooth bar 5, gear 6 and hydraulic station 7; Described tooth bar 5 one end are fixedly arranged on pylon 3 tops, the other end is arranged at heat absorber on described tooth bar 5 by gear 6, hydraulic station 7 actuation gears 6 move, and make heat absorber 1 under the driving of hydraulic station 7, move up and down within the specific limits along tooth bar 5 by gear 6.
In actual tower system, conventionally steam turbine generator or gas turbine powered generator 8 are also arranged on top of tower in the lump, and this part equipment can be placed on the lift platform of heat absorber together with heat absorber---on lowering or hoisting gear, also can be placed on separately other regions on tower, which kind of no matter belongs to, all should be included within the scope of the utility model.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and model utility design thereof, within all should being encompassed in protection domain of the present utility model.
Claims (4)
1. an efficient tower type solar power system, comprise heat absorber (1), pylon (3), heliostat group (4), heat absorber is installed on pylon (3), it is characterized in that: described heat absorber (1) is removable is arranged at pylon (3) above, and this heat absorber (1) can move up and down within the specific limits along pylon (3).
2. a kind of efficient tower type solar power system according to claim 1, is characterized in that: described heat absorber (1) carries out the adjustment of position height by lowering or hoisting gear; Gear (6) and hydraulic station (7) that described lowering or hoisting gear comprises tooth bar (5), matches with tooth bar (5); Described tooth bar (5) is fixedly arranged on pylon (3), heat absorber (1) is arranged on described tooth bar (5) by gear (6), and under the driving of hydraulic station (7), heat absorber (1) is moved up and down within the specific limits along tooth bar (5) by gear (6).
3. according to a kind of efficient tower type solar power system described in claim 1 or 2, it is characterized in that: the quantity of described heat absorber (1) is multiple.
4. a kind of efficient tower type solar power system according to claim 2, is characterized in that: described system also comprises steam turbine generator or gas turbine powered generator (8); Described steam turbine generator or gas turbine powered generator (8) or be arranged in the lump pylon (3) top; Or be arranged on described lowering or hoisting gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373327.9U CN204003299U (en) | 2014-07-07 | 2014-07-07 | A kind of efficient tower type solar power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373327.9U CN204003299U (en) | 2014-07-07 | 2014-07-07 | A kind of efficient tower type solar power system |
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| Publication Number | Publication Date |
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| CN204003299U true CN204003299U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420373327.9U Expired - Fee Related CN204003299U (en) | 2014-07-07 | 2014-07-07 | A kind of efficient tower type solar power system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462466A (en) * | 2018-01-23 | 2018-08-28 | 浙江中控太阳能技术有限公司 | A kind of photovoltaic-photo-thermal hybrid power plant systems and its operation method |
| CN109973341A (en) * | 2019-02-28 | 2019-07-05 | 华电电力科学研究院有限公司 | A kind of power generation of disc type solar energy and comprehensive energy utilize system and its working method |
-
2014
- 2014-07-07 CN CN201420373327.9U patent/CN204003299U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462466A (en) * | 2018-01-23 | 2018-08-28 | 浙江中控太阳能技术有限公司 | A kind of photovoltaic-photo-thermal hybrid power plant systems and its operation method |
| CN109973341A (en) * | 2019-02-28 | 2019-07-05 | 华电电力科学研究院有限公司 | A kind of power generation of disc type solar energy and comprehensive energy utilize system and its working method |
| CN109973341B (en) * | 2019-02-28 | 2023-09-15 | 华电电力科学研究院有限公司 | Dish type solar power generation and comprehensive energy utilization system and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20200707 |