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WO2011092353A2 - Structure de support d'un collecteur cylindro-parabolique - Google Patents

Structure de support d'un collecteur cylindro-parabolique Download PDF

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Publication number
WO2011092353A2
WO2011092353A2 PCT/ES2010/070049 ES2010070049W WO2011092353A2 WO 2011092353 A2 WO2011092353 A2 WO 2011092353A2 ES 2010070049 W ES2010070049 W ES 2010070049W WO 2011092353 A2 WO2011092353 A2 WO 2011092353A2
Authority
WO
WIPO (PCT)
Prior art keywords
support structure
bars
crossbars
longitudinal beams
flanges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/ES2010/070049
Other languages
English (en)
Spanish (es)
Other versions
WO2011092353A3 (fr
Inventor
Jaime Arraiza Ruiz De Galarreta
Borja DE CARLOS GANDÁSEGUI
José Luis CONDES VALBUENA
José Carlos FERNÁNDEZ MOVELLAN
Pedro JIMÉNEZ CARMONA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acciona Generacion Renovable SA
Original Assignee
Acciona Energia SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Acciona Energia SA filed Critical Acciona Energia SA
Priority to PCT/ES2010/070049 priority Critical patent/WO2011092353A2/fr
Publication of WO2011092353A2 publication Critical patent/WO2011092353A2/fr
Publication of WO2011092353A3 publication Critical patent/WO2011092353A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S25/65—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules for coupling adjacent supporting elements, e.g. for connecting profiles together
    • 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
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • 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
    • F24S25/13—Profile arrangements, e.g. trusses
    • 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
    • F24S2025/80—Special profiles
    • F24S2025/801—Special profiles having hollow parts with closed cross-section
    • 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
    • F24S2025/80—Special profiles
    • F24S2025/802—Special profiles having circular or oval cross-section
    • 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

Definitions

  • the main object of the invention is a novel structure for the support of the parabolic trough collectors of a thermoelectric solar plant.
  • Thermoelectric solar technology consists in the use of incident solar radiation on the earth's surface for heating a fluid that is subsequently used to move a turbine to generate electricity.
  • parabolic trough technology is the most advanced, since it is already beginning to be developed commercially.
  • This technology is based on a parabolic trough sensor that has a parabolic trough reflecting surface that reflects direct solar radiation, concentrating it on an absorbent tube placed in the focal line of the parabola. This radiation concentrated on the absorbent tube causes the fluid that circulates inside it to heat up, thus transforming solar radiation into thermal energy, in the form of sensible or latent heat of the fluid.
  • Cylinder-parabolic collectors can only take advantage of direct solar radiation, which requires the collector to change its position during the day by turning around an axis parallel to its focal line.
  • a surface support structure is necessary reflective that supports not only the weight of said reflective surface, but also the loads that appear due to the wind and because of the rotation of the reflective surfaces during the day as they are oriented towards the position of the sun at any time.
  • the assembly of these structures cannot normally be carried out in the same place where it must be fixed (“field assembly”), and must be mounted on a manufacturing bench that allows all associated work to be carried out. .
  • the joints of the bars that make up the existing structures do not currently have fixation on both sides of the bars, which limits the rigidity of these structures.
  • document ES 2274710 describes a structure formed by a central tubular body to which a plurality of support arms of the parabolic trough are coupled, each of which is wedge-shaped.
  • the present invention describes a support structure of a parabolic trough collector that allows faster assembly, mainly thanks to the use of a structure comprising a box of torsion formed by longitudinal beams of continuous profile and a series of arms that serve as support for the reflective surface of the parabolic trough.
  • This configuration allows to greatly accelerate the assembly work, since it is not necessary to perform complicated operations for fixing the bars in specific places of the longitudinal beams intended to serve as nodes.
  • each longitudinal beam of continuous profile allows the nodes to be formed anywhere along the entire length of the longitudinal beams, depending on how their machining is performed.
  • These longitudinal beams of continuous profile manage to integrate the bars of the torsion box with the support arms for the reflective surface, confluent in each beam, which means that each longitudinal beam of continuous profile acts as a connecting piece, avoiding any welding or Additional piece for this coupling.
  • the new configuration of the longitudinal beams allows bolts to be used for the joints of the structure, unlike the prior art where the joints were made by welding, thus shortening even more the assembly time.
  • Bolts means any type of screw, pin or element used in the industry for fixing by means of through-hole elements.
  • a tooling meaning tooling, a set of auxiliary mechanical elements
  • a tooling would be placed to support the four longitudinal beams of continuous profile, which act as a skeleton of the structure, and then the rest of the bars and arms would be mounted, just by placing the bars in the right place and apply the bolts and retaining elements. Due to the shape of the longitudinal beams of continuous profile, the arms of the structure can be mounted immediately after mounting all the bars that make up the torsion box. This implies a saving of time because the assembly of intermediate parts is not necessary to couple the arms.
  • the invention describes a support structure of parabolic trough collectors comprising a torsion box and support arms. Each of these elements is described in more detail below: a) Torsion box
  • the torsion box is the element of the structure designed to absorb mainly the torsional stresses. It is a quadrangular lattice torsion box that is formed by four longitudinal beams coupled by a plurality of cross bars. In principle, any configuration of the crossbars that achieves sufficient mechanical strength to withstand the stresses to which the structure will be subjected is possible.
  • the crossbars are contained in the planes that constitute the torsion box, and more specifically they can be divided into two types: perpendicular transverse bars, which are bars contained in planes perpendicular to the box of torsion so that they form grids, and oblique crossbars, which normally connect opposite ends of the same grid.
  • the longitudinal beams have continuous profiles that allow the coupling of the crossbars (which are part of the torsion box itself) and of inclined bars (which are part of the support arms, as explained later) in any position along its entire length.
  • the two longitudinal beams closest to the specular surface will be called “anterior longitudinal beams”, while those that are farthest will be called “posterior longitudinal beams”.
  • the continuous profile of each longitudinal beam comprises:
  • a pair of slopes of inclined connection it is a pair of flanges that is inclined in relation to the two pairs of horizontal and vertical flanges, and which is used for connecting inclined bars outside the planes that make up the torsion box to configure arms that support the parabolic trough cylinder structure, the particular inclination being a function of the overall configuration of the support structure.
  • the angle of inclination in relation to the two pairs of flanges forming a right angle is greater than 90 °, while in beams
  • the longitudinal angle of inclination is less than 90 ° in relation to one of the two flange pairs that form a right angle.
  • each longitudinal beam further comprises a hollow central cylinder to which the respective pairs of connecting flanges are attached. More preferably, the connection between the pairs of connecting flanges and the hollow central cylinder further comprises intermediate cavities.
  • each support arm comprises an inclined bar connected to an anterior longitudinal beam and another inclined bar connected to a posterior longitudinal beam.
  • the transverse bars (which constitute the torsion box) and the inclined bars (which form the support arms) are fixed to the corresponding pairs of connecting flanges of the longitudinal beams by means of bolts.
  • the Bolt fixing allows a more rigid connection, since the fixing on both sides of the bars occurs. Specifically, once the end of a bar is inserted between a pair of connecting flanges, a bolt is used to cross both flanges and the bar, and the opposite end of the bolt is fixed by means of retaining elements. It is possible to use the most convenient number of bolts for each case depending on the particular request to which each bar will be subjected, although preferably 1 or 2 bolts are used per joint.
  • the crossbars have made the holes for the bolts prior to assembly, that is, they are prepared for quick assembly. This saves additional time, because the assembly would only consist of placing the bars aligned with the holes and mounting the bolts and retaining elements.
  • the transverse and inclined bars, the longitudinal beams, as well as bolts or retaining elements may have signals, shapes or devices intended to avoid errors in the assembly of the various joints (poka-yoke).
  • the structure of the invention is made of aluminum. This means that the weight of the beams and different bars is much less than with other materials such as steel, which implies a lower assembly time, a lower number of labor required, and therefore a much lower overall cost of installation.
  • Fig. 1. shows a perspective view of a structure according to the invention.
  • Figs. 2a and 2b respectively show the profile of an anterior longitudinal beam according to the invention and a perspective view thereof.
  • Figs. 3a and 3b respectively show the profile of a rear longitudinal beam according to the invention and a perspective view thereof.
  • Figs. 4a, 4b, 4c and 4d show various details of the connection by bolts between different crossbars, oblique and inclined and an anterior longitudinal beam according to the invention.
  • FIG. 1 shows a perspective view of the support structure (1) where the torsion box (2) and the support arms (3) can be seen.
  • the torsion box (2) is formed by front longitudinal beams (21, 22) and rear longitudinal beams (23, 24), which are joined together by means of perpendicular crossbars (25) and oblique (26) .
  • Figs. 2a and 2b show in greater detail the shape of an anterior transverse beam (21, 22).
  • the two pairs of right angle connection flanges (21 1, 212) and the pair of inclined connection flanges (213) are appreciated.
  • the two pairs of right angle connection flanges (21 1, 212) receive the perpendicular (25) and oblique crossbars (26) to form the torsion box (2), while the pair of inclined connection flanges (213 ) receives inclined bars (31) which in this example constitute a part of the support arms (3) of the parabolic-cylinder specular surface. Note how the angle of inclination of the pair of inclined connecting flanges (213) of an anterior transverse beam (21, 23) is greater than 90 ° in relation to the two pairs of right-angled flanges (21 1, 212).
  • Figs. 3a and 3b show the shape of the rear longitudinal beams (23, 24), formed by two pairs of right angle connection flanges (231, 232) and a pair of inclined connection flanges (233) to which bars are fixed inclined (32) that converge with the inclined bars (31) at one point, thus forming the support arms (3).
  • the angle of inclination of the pair of inclined connection flanges (233) is less than 90 ° in relation to one of the right angle connection flanges (231, 232).
  • FIG. 4a shows a node formed in an anterior longitudinal beam (21, 22) where five bars converge: two perpendicular crossbars (25) that make up the torsion box grids (2), two oblique crossbars (26) arranged between opposite ends of the same grid to provide greater mechanical resistance to said torsion box (2), and an inclined bar (31) that is part of a support arm (3).
  • Figs. 4b and 4c show in greater detail the connection of the bars (25, 26, 31) to the longitudinal beam (21) by bolts (4). Each bar (25, 26, 31) is arranged between the corresponding pair of flanges (21 1, 212, 213), then introducing the fixing bolts (4).
  • Fig. 4d shows how at the end of the bolts (4) retention elements (5) have been fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Photovoltaic Devices (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

L'invention concerne principalement une nouvelle structure pour porter des collecteurs cylindro-paraboliques d'une centrale solaire thermoélectrique, qui comprend : une caisse de torsion (2) quadrangulaire en grille, formée par deux poutres longitudinales antérieures (21, 22) et deux poutres longitudinales postérieures (23, 24) couplées les unes aux autres au moyen d'une pluralité de barres transversales (25, 26); et des bras de support (3) qui comprennent au moins une barre inclinée (31, 32) pour fournir un support à une surface réfléchissante cylindro-parabolique; les poutres longitudinales (21, 22, 23, 24) présentant des profils continus qui permettent d'accoupler les barres transversales (25, 26) et les barres inclinées (31, 32).
PCT/ES2010/070049 2010-01-29 2010-01-29 Structure de support d'un collecteur cylindro-parabolique Ceased WO2011092353A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2010/070049 WO2011092353A2 (fr) 2010-01-29 2010-01-29 Structure de support d'un collecteur cylindro-parabolique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2010/070049 WO2011092353A2 (fr) 2010-01-29 2010-01-29 Structure de support d'un collecteur cylindro-parabolique

Publications (2)

Publication Number Publication Date
WO2011092353A2 true WO2011092353A2 (fr) 2011-08-04
WO2011092353A3 WO2011092353A3 (fr) 2012-01-26

Family

ID=44319903

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2010/070049 Ceased WO2011092353A2 (fr) 2010-01-29 2010-01-29 Structure de support d'un collecteur cylindro-parabolique

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012052579A1 (fr) * 2010-10-20 2012-04-26 Abengoa Solar New Technologies S. A. Structure à poutre de torsion en treillis pour collecteur solaire cylindro-parabolique
CN115682444A (zh) * 2022-11-04 2023-02-03 河北珠峰仪器仪表设备有限公司 一种高强度精准快捷式安装的双轴槽式太阳能集热器抗风框架

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2274710A1 (es) 2005-09-19 2007-05-16 Sener, Ingenieria Y Sistemas, S.A. Brazo de sustentacion, soporte de colector solar cilindro-parabolico y procedimiento para fabricar el brazo.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745412A (en) * 1985-05-10 1988-05-17 Chu Associates, Inc. Lightweight tower assemblies for antennas and the like
US6076324A (en) * 1996-11-08 2000-06-20 Nu-Cast Inc. Truss structure design
GB0101745D0 (en) * 2001-01-23 2001-03-07 Harrison John Reflector dish
US7578109B2 (en) * 2004-08-31 2009-08-25 Gossamer Space Frames Space frames and connection node arrangement for them
EP2221555B1 (fr) * 2009-02-24 2013-05-22 Sociedad Anonima Minera Catalano-Aragonesa (Samca) Structure de support pour capteur solaire

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2274710A1 (es) 2005-09-19 2007-05-16 Sener, Ingenieria Y Sistemas, S.A. Brazo de sustentacion, soporte de colector solar cilindro-parabolico y procedimiento para fabricar el brazo.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012052579A1 (fr) * 2010-10-20 2012-04-26 Abengoa Solar New Technologies S. A. Structure à poutre de torsion en treillis pour collecteur solaire cylindro-parabolique
CN115682444A (zh) * 2022-11-04 2023-02-03 河北珠峰仪器仪表设备有限公司 一种高强度精准快捷式安装的双轴槽式太阳能集热器抗风框架

Also Published As

Publication number Publication date
WO2011092353A3 (fr) 2012-01-26

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