CN105758014A - Heat absorber of linear Fresnel heat-collecting system - Google Patents
Heat absorber of linear Fresnel heat-collecting system Download PDFInfo
- Publication number
- CN105758014A CN105758014A CN201610272738.2A CN201610272738A CN105758014A CN 105758014 A CN105758014 A CN 105758014A CN 201610272738 A CN201610272738 A CN 201610272738A CN 105758014 A CN105758014 A CN 105758014A
- Authority
- CN
- China
- Prior art keywords
- heat
- collecting tube
- heat extractor
- riser
- column
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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
- F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
- F24S25/10—Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat absorber of a linear Fresnel heat-collecting system.The heat absorber comprises a heat-collecting tube, secondary reflectors and stand columns supporting a heat absorber body, the heat-collecting tube is fixed to lower cross beams connected with the stand columns through supporting rods, and a spring steel piece is arranged between each supporting rod and the corresponding lower cross beam; the secondary reflectors are connected with multiple vertical plates respectively, and the vertical plates are connected with upper cross beams fixed to the stand columns or connected with a frame fixed among the stand columns.According to the heat absorber, the secondary reflectors and the heat-collecting tube are relatively independent in structure, and the heat absorber is simple in structure and convenient to mount and maintain; the supporting mode of the heat-collecting tube is simple and reliable, and it can be effectively guaranteed that the heat-collecting tube is not damaged due to the fact that the heat-collecting tube is heated and expanded; the secondary reflectors and the heat-collecting tube are all mounted on the stand columns, the stand columns are taken as the reference, accuracy of relative positions can be effectively guaranteed, and it is guaranteed that the secondary reflectors focus radiation to the heat-collecting tube.
Description
Technical field
The invention belongs to solar light-heat power-generation technical field, relate to the heat extractor of a kind of linear Fresnel collecting system.
Background technology
Solar energy thermal-power-generating technology is to get up to be converted into heat energy by solar energy collecting by condenser, then produces the generating of high temperature and high pressure steam driving steam turbine.The hot generation technology of linear Fresnel formula Salar light-gathering is a kind of common form of current solar energy thermal-power-generating, sunlight is become wire hot spot by the secondary mirror field consisted of multiaspect linear reflective mirror, then utilize receptor, by heat-conducting fluid the high temperature that illumination produces absorbed and be delivered to heat exchanger.In heat exchanger, the heat of heat-conducting fluid is used to heating water generation steam, and then utilizes the acting generating of steam driving steam turbine.
In whole linear Fresnel collecting system, heat extractor is responsible for absorbing the solar radiation of a secondary mirror field reflection, thermal-arrest medium is heated to high temperature, is very crucial assembly.The energy absorption efficiency of heat extractor is directly connected to the final luminous energy transformation efficiency to electric energy.Due in solar energy thermal-power-generating technology for the requirement of focusing ratio and receptor limited width, in linear Fresnel technology, adopt narrower reflection mirror array and reflecting mirror is done the spot width that bending process reduction reflecting mirror is irradiated on heat extractor, secondary reflection mirror is installed simultaneously, for to the radiation secondary focusing being irradiated to heat extractor entrance, improving focusing ratio and thermal-arrest medium be heated to higher temperature.
Therefore linear Fresnel collecting system heat extractor mainly to have secondary reflection mirror and thermal-collecting tube, thermal-collecting tube operationally can be heated to significantly high temperature, and secondary reflection mirror and frame structure temperature are not high, under room temperature to running temperature, the swell increment of frame structure and secondary reflection mirror and thermal-collecting tube has very big difference, this just requires structurally to process, it is to avoid thermal-collecting tube is because expanding the limited harmful effect brought.
One of existing solution is to adopt rail structure, thermal-collecting tube suspention is got up and avoids and the contacting of other positions of framework.The shortcoming of this mode is that structure is complicated, and installation difficulty, changes thermal-collecting tube and framework is also highly difficult.
Summary of the invention
For solving existing linear Fresnel heat extractor structure complexity, installing and problem difficult in maintenance, the invention provides the heat extractor of a kind of linear Fresnel collecting system, its simple in construction, installs and is easily serviced, it is possible to effective guarantee each parts relative position accurate.
The present invention is achieved through the following technical solutions:
The heat extractor of a kind of linear Fresnel collecting system, including thermal-collecting tube, secondary reflection mirror and the column supporting heat extractor, described thermal-collecting tube is fixed on the sill being connected with column by pole, is additionally provided with spring steel plate between pole and sill；Described secondary reflection mirror is connected with multiple risers respectively, and riser is connected with the entablature being fixed on column, or is connected with the framework being fixed between column.
The both sides of described framework are equipped with column and coupled respectively, and column is arranged in pairs and along heat extractor length direction spaced set, entablature, sill are connected vertical with column respectively.
Described entablature is connected with riser in vertical direction, and horizontal direction is connected with framework, and riser is paralleled with column.
Described riser is along heat extractor length direction spaced set, and its spacing is 0.5～2 times of secondary reflection mirror height, and riser is connected to the lower section of entablature or framework.
Described secondary reflection mirror is connected with riser by connector, and one end of connector is bonding with secondary reflection mirror, and the other end is contained in the sliding tray offered on riser, and connector can slide in sliding tray.
One end of described connector is provided with bonding plane, bonding with secondary reflection mirror by bonding agent, and the other end being contained in sliding tray is perpendicular with bonding plane.
Described connector is angle steel or class angle iron connecting piece, and connector offers through hole, is connected on riser by the bolt matched with through hole.
Described pole includes the support bar being separately positioned on thermal-collecting tube both sides, is provided with auxiliary connecting rod between support bar, and the spring steel plate between pole and sill provides the space that thermal-collecting tube expands after being heated.
Compared with prior art, the present invention has following useful technique effect:
The heat extractor of linear Fresnel collecting system provided by the invention, secondary reflection mirror is relatively independent with in thermal-collecting tube structure, secondary reflection mirror is fixed by riser, entablature, thermal-collecting tube is fixed by pole, sill, its support force one comes from above one from below, avoiding too much between the two tangling, overall structure is simple, installs and is easily serviced.
The heat extractor of linear Fresnel collecting system provided by the invention, the supporting way of thermal-collecting tube is simple and reliable, is additionally provided with spring steel plate between pole and sill, and with the space expanded after providing thermal-collecting tube to be heated, can be effectively ensured thermal-collecting tube will not be impaired because of expanded by heating；And secondary reflection mirror is by the connection of connector with riser, it is allowed to connector slides, it is ensured that secondary reflection mirror expanded by heating deformation space, improve the reliability of the installation of secondary reflection mirror, it is ensured that reasonable spotlight effect.
The heat extractor of linear Fresnel collecting system provided by the invention, secondary reflection mirror and thermal-collecting tube are all arranged on column, with column for benchmark, it is possible to effective guarantee relative position accurate, it is ensured that radiation is focused on thermal-collecting tube by secondary reflection mirror.
Accompanying drawing explanation
Fig. 1 is the structural representation of linear Fresnel heat collecting field heat extractor of the present invention.
Fig. 2 is the attachment structure schematic diagram of secondary reflection mirror in heat extractor of the present invention.
In figure, 1. thermal-collecting tube, 2. secondary reflection mirror, 3. column, 4. pole, 5. spring steel plate, 6. sill, 7. entablature, 8. framework, 9. riser, 10. connector, 11. bonding agents.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
Referring to Fig. 1, Fig. 2, a kind of heat extractor of linear Fresnel collecting system, including thermal-collecting tube 1, secondary reflection mirror 2 and the column 3 supporting heat extractor, described thermal-collecting tube 1 is fixed on the sill 6 being connected with column 3 by pole 4, is additionally provided with spring steel plate 5 between pole 4 and sill 6；Described secondary reflection mirror 2 is connected with multiple risers 9 respectively, and riser 9 is connected with the entablature 7 being fixed on column 3, or is connected with the framework 8 being fixed between column 3.
Concrete, the both sides of described framework 8 are equipped with column 3 and coupled respectively, and column 3 is arranged in pairs and along heat extractor length direction spaced set, entablature 7, sill 6 are connected vertical with column respectively.
Described entablature 7 is connected with riser 9 in vertical direction, and horizontal direction is connected with framework 8, and riser 9 is paralleled with column 3.
Concrete, described riser 9 is along heat extractor length direction spaced set, and its spacing is 0.5～2 times of secondary reflection mirror 2 height, it is preferable that the spacing being highly close with secondary reflection mirror 2 is arranged, and riser 9 is connected to entablature 7 or the lower section of framework 8.
Described secondary reflection mirror 2 is connected with riser 9 by connector 10, and one end of connector 10 is bonding with secondary reflection mirror 2, and the other end is contained on riser 9 in the sliding tray offered, and connector 10 can slide in sliding tray.
One end of described connector 10 is provided with bonding plane, bonding with secondary reflection mirror 2 by bonding agent 11, and the other end being contained in sliding tray is perpendicular with bonding plane.
Described connector 10 is angle steel or class angle iron connecting piece, and connector 10 offers through hole, is connected on riser 9 by the bolt matched with through hole.
Concrete, referring to Fig. 2, secondary reflection mirror 2 and riser 9, connected by the connector 10 of similar angle steel, connector 10 with between secondary reflection mirror 2 with bonding agent 11 bonding, riser 9 has groove, hold the another side of connector 10, add strong ties by welding or bolt.
Described pole 4 includes the support bar being separately positioned on thermal-collecting tube 1 both sides, is provided with auxiliary connecting rod between support bar, the space that the spring steel plate 5 between pole 4 and sill 6 expands after providing thermal-collecting tube to be heated.
The heat extractor of linear Fresnel collecting system provided by the invention, secondary reflection mirror is relatively independent with in thermal-collecting tube structure, and simple in construction is installed and is easily serviced.The supporting way of thermal-collecting tube is simple and reliable, and can be effectively ensured thermal-collecting tube will not be impaired because of expanded by heating.Secondary reflection mirror and thermal-collecting tube are all arranged on column, with column for benchmark, it is possible to effective guarantee relative position accurate, it is ensured that radiation is focused on thermal-collecting tube by secondary reflection mirror.
Example given above is to realize the present invention preferably example, the invention is not restricted to above-described embodiment.Those skilled in the art, according to the made any nonessential interpolation of the technical characteristic of technical solution of the present invention, replacement, belongs to protection scope of the present invention.
Claims (8)
1. the heat extractor of a linear Fresnel collecting system, it is characterized in that, including thermal-collecting tube (1), secondary reflection mirror (2) and the column (3) supporting heat extractor, described thermal-collecting tube (1) is fixed on the sill (6) being connected with column (3) by pole (4), is additionally provided with spring steel plate (5) between pole (4) and sill (6)；Described secondary reflection mirror (2) is connected with multiple risers (9) respectively, riser (9) is connected with the entablature (7) being fixed on column (3), or is connected with the framework (8) being fixed between column (3).
2. the heat extractor of linear Fresnel collecting system as claimed in claim 1, it is characterized in that, the both sides of described framework (8) are equipped with column (3) and coupled respectively, column (3) is arranged in pairs and along heat extractor length direction spaced set, entablature (7), sill (6) are connected vertical with column respectively.
3. the heat extractor of linear Fresnel collecting system as claimed in claim 1 or 2, it is characterized in that, described entablature (7) is connected with riser (9) in vertical direction, being connected with framework (8) in horizontal direction, riser (9) is paralleled with column (3).
4. the heat extractor of linear Fresnel collecting system as claimed in claim 1 or 2, it is characterized in that, described riser (9) is along heat extractor length direction spaced set, its spacing is 0.5～2 times of secondary reflection mirror (2) height, and riser (9) is connected to entablature (7) or the lower section of framework (8).
5. the heat extractor of linear Fresnel collecting system as claimed in claim 1, it is characterized in that, described secondary reflection mirror (2) is connected with riser (9) by connector (10), one end of connector (10) is bonding with secondary reflection mirror (2), the other end is contained on riser (9) in the sliding tray offered, and connector (10) can slide in sliding tray.
6. the heat extractor of linear Fresnel collecting system as claimed in claim 5, it is characterized in that, one end of described connector (10) is provided with bonding plane, bonding with secondary reflection mirror (2) by bonding agent (11), the other end being contained in sliding tray is perpendicular with bonding plane.
7. the heat extractor of linear Fresnel collecting system as claimed in claim 5, it is characterized in that, described connector (10) is angle steel or class angle iron connecting piece, connector offers through hole on (10), is connected on riser (9) by the bolt matched with through hole.
8. the heat extractor of the linear Fresnel collecting system as described in claim 1 or 5, it is characterized in that, described pole (4) includes the support bar being separately positioned on thermal-collecting tube (1) both sides, being provided with auxiliary connecting rod between support bar, the spring steel plate (5) between pole (4) and sill (6) provides the space that thermal-collecting tube expands after being heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272738.2A CN105758014B (en) | 2016-04-27 | 2016-04-27 | A kind of heat dump of linear Fresnel collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272738.2A CN105758014B (en) | 2016-04-27 | 2016-04-27 | A kind of heat dump of linear Fresnel collecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105758014A true CN105758014A (en) | 2016-07-13 |
| CN105758014B CN105758014B (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610272738.2A Active CN105758014B (en) | 2016-04-27 | 2016-04-27 | A kind of heat dump of linear Fresnel collecting system |
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| CN (1) | CN105758014B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016779A (en) * | 2016-07-25 | 2016-10-12 | 中国华能集团清洁能源技术研究院有限公司 | Linear Fresnel heat absorber structure for secondary light condensation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660845A (en) * | 2009-09-07 | 2010-03-03 | 东南大学 | Secondary reflection light gathering and heat collecting device with compound curved surface |
| 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 |
| CN203286779U (en) * | 2013-05-28 | 2013-11-13 | 兰州大成科技股份有限公司 | Road space three-dimensional linear Fresnel type solar condensation device |
| CN105783290A (en) * | 2016-04-26 | 2016-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Easily cleaned heat absorber for linear Fresnel heat collecting system |
| CN205641600U (en) * | 2016-04-27 | 2016-10-12 | 中国华能集团清洁能源技术研究院有限公司 | Linear fei nieer solar collecting system's heat absorber |
-
2016
- 2016-04-27 CN CN201610272738.2A patent/CN105758014B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660845A (en) * | 2009-09-07 | 2010-03-03 | 东南大学 | Secondary reflection light gathering and heat collecting device with compound curved surface |
| 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 |
| CN203286779U (en) * | 2013-05-28 | 2013-11-13 | 兰州大成科技股份有限公司 | Road space three-dimensional linear Fresnel type solar condensation device |
| CN105783290A (en) * | 2016-04-26 | 2016-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Easily cleaned heat absorber for linear Fresnel heat collecting system |
| CN205641600U (en) * | 2016-04-27 | 2016-10-12 | 中国华能集团清洁能源技术研究院有限公司 | Linear fei nieer solar collecting system's heat absorber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016779A (en) * | 2016-07-25 | 2016-10-12 | 中国华能集团清洁能源技术研究院有限公司 | Linear Fresnel heat absorber structure for secondary light condensation |
| CN106016779B (en) * | 2016-07-25 | 2018-03-06 | 中国华能集团清洁能源技术研究院有限公司 | A kind of linear Fresnel heat dump structure of secondary condensation |
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| Publication number | Publication date |
|---|---|
| CN105758014B (en) | 2018-12-25 |
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