WO2012107621A1 - Dispositif de positionnement pour des capteurs cylindro-paraboliques et capteur cylindro-parabolique comprenant un tel dispositif de positionnement - Google Patents

Dispositif de positionnement pour des capteurs cylindro-paraboliques et capteur cylindro-parabolique comprenant un tel dispositif de positionnement Download PDF

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Publication number
WO2012107621A1
WO2012107621A1 PCT/ES2012/070077 ES2012070077W WO2012107621A1 WO 2012107621 A1 WO2012107621 A1 WO 2012107621A1 ES 2012070077 W ES2012070077 W ES 2012070077W WO 2012107621 A1 WO2012107621 A1 WO 2012107621A1
Authority
WO
WIPO (PCT)
Prior art keywords
positioning device
driving wheel
actuator
bearing
rotation
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/ES2012/070077
Other languages
English (en)
Spanish (es)
Inventor
Alvaro Achaerandio Fernandez
Javier Errea Argaiz
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.)
Soluciones Tecnicas Integrales Norland SL
Original Assignee
Soluciones Tecnicas Integrales Norland SL
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 Soluciones Tecnicas Integrales Norland SL filed Critical Soluciones Tecnicas Integrales Norland SL
Publication of WO2012107621A1 publication Critical patent/WO2012107621A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements
    • H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
    • H10F77/488—Reflecting light-concentrating means, e.g. parabolic mirrors or concentrators using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/425—Horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S2030/10—Special components
    • F24S2030/13—Transmissions
    • F24S2030/134—Transmissions in the form of gearings or rack-and-pinion transmissions
    • 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
    • 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
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators

Definitions

  • the object of this invention is a positioning device for parabolic trough collectors comprising a set of mechanisms that can in a simple and economical way improve the mechanical performance of current positioning devices.
  • the object of the present invention is also the parabolic trough that incorporates said positioning device.
  • a parabolic cylinder collector comprises a parabolic cylinder surface that reflects direct solar radiation on an absorber tube placed in the focal line of the parabola. In this way the reflected radiation heats a fluid that circulates inside the absorber tube.
  • parabolic trough collectors can only take advantage of direct solar radiation, which requires the collector to change its position following the sun. This movement is achieved by a turn parallel to its focal line and oriented on the N-S axis.
  • the parabolic trough surface is supported by a supporting structure and a positioning device rotates it. Finally, a pole structure joins the positioning device to the ground.
  • the kneecaps at the ends of the cylinders are weaker elements than the cylinders themselves or the rest of the components.
  • the cylinders can be buckled by wind blows on the parabola.
  • Suitable drive devices are known for or other industrial applications, for example, crane drives.
  • the main mechanical request to be supported by the drive is the tipping moments, that is, the moments perpendicular to the axis of rotation.
  • the tipping moments 5 are low and instead the main request is the torsor moment.
  • the positioning device for parabolic trough collectors object of the invention allows a variable number of modules to be moved, a module comprising a bearing structure, a mirror and an absorber tube.
  • the positioning device object of the invention is normally located in the middle zone of a line of modules and normally moves an even number of modules between 6 and 16 constituting a line of 80 to 200 meters in length according to the configuration.
  • an actuator comprising a driving wheel adapted to be coaxial to the axis of rotation of the supporting structure and integral thereto for the rotation thereof, - a means of actuating the driving wheel of the actuator,
  • the positioning device object of the invention comprises an actuator that drags the supporting structure and places the module in the proper orientation.
  • the stresses supported by the actuator are transmitted to the housing in which the driving wheel is located and this in turn to a ground post. Between the housing and the driving wheel is a bearing.
  • An important aspect of the invention with respect to hydraulic drives is that the uncertainty of positioning is reduced to less than half of the hydraulic solution (0.1 °).
  • An additional advantage of the positioning device object of the invention, compared to hydraulic devices, is that the course of the current ⁇ 110 ° can be extended to ⁇ 157.5 °. This allows the collector to be positioned in a more defensive parking situation in case of adverse weather conditions.
  • Figure 1. It shows a schematic front view of an example of realization of two modules of parabolic trough collectors and a positioning device.
  • Figure 2. Shows a schematic front view of an embodiment example of a positioning device.
  • Figure 3. Shows a schematic perspective view of the embodiment example of the positioning device corresponding to Figure 2.
  • Figure 4.- Shows a schematic view of a section of the positioning device corresponding to the example of embodiment of Figure 2.
  • Figure 5. Shows a schematic perspective view of the embodiment of Figure 2, in which a limit switch is included.
  • Figure 6. Shows a schematic perspective view of the embodiment of Figure 2, in which a mechanism for controlling the positioning of the driving wheel is included.
  • Figure 7. Shows a schematic elevation view of a second embodiment of the driving wheel drive means.
  • Figure 8.- Shows a schematic elevation view of a third embodiment of the driving wheel drive means.
  • Figure 9. It shows a schematic perspective view of a module and a module bearing that is located between attached modules.
  • FIG. 1 and 2 The embodiment of the invention shown in Figures 1 and 2 has an actuator (10) that rotates a supporting structure (20) of parabolic trough mirrors (30).
  • a pole (40) joins the actuator (10) to the ground.
  • Extensions (50) connect the actuator (10) to the supporting structure (20).
  • Figure 3 shows an embodiment of the positioning device that has an actuator (10) consisting of a driving wheel (11), the actuator means (12) of the actuator (10) being two endless gears (15) located in diametrically opposite positions with respect to the driving wheel
  • a housing (13) carries the endless gears (15) and the driving wheel (11).
  • the endless gears (15) are driven by gearmotors (16) from one to several stages of reduction. They could also be driven by hydraulic motors.
  • each module is operated by its own positioning device
  • the modules being mechanically connected to each other and taking into account that at the end of the line the absorber tube is connected to a fixed pipe by means of a rotating joint, if the assembly
  • the manifold has several drives, a lack of synchronization, between them and / or if one of them has a breakdown or a malfunction, it can cause unwanted internal torsions, which could cause mechanical damage or loss in tracking.
  • a single actuator device drives several modules, this risk does not exist.
  • the bearings can be of rolling or friction elements (14).
  • friction bearings (14) are shown that transmit the forces generated in the driving wheel (11) to the housing (13).
  • the friction bearings (14) can be low friction rings, bronze, graphite bronze, technical plastics, resins or the like. Compared to solutions based on rolling element bearings, friction has a greater contact surface and greater damping, to absorb vibrations produced by the wind.
  • Another advantage of the friction bearing (14) over a rolling element bearing is that it is a maintenance-free bearing with an efficiency consistent with the type of drive, since it is necessary to take into account that the rotation speed of the solar tracker It is low compared to other industrial applications of drives, for example the drives intended for cranes. As the rotation speeds are very slow in the case of the operation of parabolic trough collectors, friction has no undesirable effects of heating by operation.
  • a screwed cover (17) retains the bearing and drive wheel assembly (11).
  • Two seal-scrapers (18) seal the inside of the mechanism.
  • Figure 5 shows a positioning device that integrates a race end 5 (60) which is arranged attached to the cover (17) by means of an adaptation plate (61).
  • Two stops (62) integral to the driving wheel (11) define the limit positions of rotation with the limit switch (60).
  • the limit switch (60) When the limit switch (60) is physically activated, it (60) gives an alarm signal and cuts off the power by stopping the mechanism.
  • a positioning control mechanism of the driving wheel (11) is shown in Figure 6, for example, a magnetic sensor (70) integral to the housing (13) in combination with a magnetic band (71) integral to the driving wheel5 (eleven ). In this way, counting pulses defines the angle of position of the driving wheel (11) and therefore of the set of mirrors (30).
  • FIG 7 An additional variant of this invention is shown in Figure 7, which consists in that the drive means (12) of the driving wheel (11) or comprises a pulley (81) and a transmission belt (82) extending between the driving wheel (11) and pulley (81) for driving the driving wheel (11).
  • FIG 8 shows another embodiment in which the drive means (12) of the driving wheel (11) comprises two gear wheels (80) located in diametrically opposite positions of the driving wheel (11).
  • the object of the invention is also the parabolic cylindrical sensor that incorporates the described positioning device.
  • the parabolic cylindrical sensor comprises, between attached modules, bearings module holder (70).
  • These bearings (70) module holders allow the structures to rotate. It is important that the bearing modules (70) are efficient since in the case that they were inefficient, this would require an oversizing of the actuator device by requiring more friction. In this sense, if the friction and clearance are high there will be a greater positioning error.
  • Figure 7 shows an example of an embodiment of the module bearing (70) comprising a metal tube (71) that is supported by an upper bearing (72) and a lower bearing (73) that are arranged joined by a screwed joint .
  • the lower bearing (73) is attached to an intermediate plate (74) which in turn is attached to a post (40) by means of bolted joints (75). These bolted joints (75) allow to regulate the bearing in the six degrees of freedom, 3 turns and 3 movements.
  • the lower (73) and upper (72) bearings are made of extruded aluminum profile.
  • the metal tube (71) can be made of extruded aluminum or stainless steel or of steel impregnated with a polyamide, Teflon, compounds based on molybdenum bisulfides or low friction resins.
  • bearings (72, 73) they can also be made of aluminum impregnated with polyamide or Teflon or with compounds based on molybdenum bisulfide or with low friction resins, they can also be bronze or bronze with graphite inserts.
  • Aluminum does not need subsequent anti-corrosion coatings, it can be profiled with very low dimensional manufacturing tolerances and it has very polished surfaces that favor sliding. In this way a set is achieved without the need for lubrication, with minimal play and economic.

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)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention concerne un dispositif de positionnement pour des capteurs cylindro-paraboliques. Elle concerne également le capteur cylindro-parabolique comprenant un tel dispositif de positionnement. Ledit dispositif de positionnement pour capteurs cylindro-paraboliques comprend une structure de support (20) de miroirs cylindro-paraboliques (30), un actionneur (10) comportant une roue motrice (11) conçue pour se placer de manière coaxiale à l'axe de rotation de la structure de support (20), solidaire en rotation à cette structure (20), un moyen d'actionnement (12) de la roue motrice (11) de l'actionneur (10), une carcasse (13) dans laquelle se trouve la roue motrice (11) et qui est conçue pour être raccordée à un poteau (40) s'étendant jusqu'au sol, ainsi qu'un palier qui est coaxial à l'axe de rotation de l'actionneur (10), est situé entre la roue motrice (11) et la carcasse (13) et est conçu pour transmettre les contraintes.
PCT/ES2012/070077 2011-02-08 2012-02-07 Dispositif de positionnement pour des capteurs cylindro-paraboliques et capteur cylindro-parabolique comprenant un tel dispositif de positionnement Ceased WO2012107621A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP201130166 2011-02-08
ES201130166A ES2354560B1 (es) 2011-02-08 2011-02-08 Dispositivo posicionador para captadores cilindro parabólicos y captador cilindro parabólico que incorpora dicho dispositivo posicionador

Publications (1)

Publication Number Publication Date
WO2012107621A1 true WO2012107621A1 (fr) 2012-08-16

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PCT/ES2012/070077 Ceased WO2012107621A1 (fr) 2011-02-08 2012-02-07 Dispositif de positionnement pour des capteurs cylindro-paraboliques et capteur cylindro-parabolique comprenant un tel dispositif de positionnement

Country Status (2)

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ES (1) ES2354560B1 (fr)
WO (1) WO2012107621A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019066634A1 (fr) * 2017-09-28 2019-04-04 Universite Internationale De Rabat Traqueur à un seul axe polaire avec plusieurs points d'action pour concentreur thermo solaire

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011103724A1 (de) * 2011-06-06 2012-12-06 Imo Holding Gmbh Vorrichtung zur Drehung einer Trägerstruktur um eine Hauptachse für den Einsatz in einer mit planaren Elementen oder Flächen ausgestatteten Anlage, insbesondere einer Solaranlage
PT2743604T (pt) 2011-08-10 2019-06-27 Tgb Rodamientos S L Módulo de rotação para orientação zenital de painéis solares
WO2013085776A2 (fr) * 2011-12-08 2013-06-13 Sunedison, Llc Dispositif à angle d'inclinaison réglable pour réseaux de photopiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155666A2 (fr) * 1984-03-19 1985-09-25 Kabushiki Kaisha Toshiba Mécanisme de poursuite solaire
DE102006036150A1 (de) * 2006-07-31 2008-02-07 Erwin Hölle Nachführbare Anlage für Solarmodule
US20090229597A1 (en) * 2008-03-11 2009-09-17 Seoul Marine Co., Ltd. Solar servo control tracking device
EP2136156A2 (fr) * 2008-06-20 2009-12-23 Jürgen Zimmermann Dispositif de poursuite destiné à l'adaptation de l'orientation d'un cadre porteur à la position du soleil

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8459249B2 (en) * 2007-06-15 2013-06-11 Ronald P. Corio Single axis solar tracking system
CN201523017U (zh) * 2009-10-15 2010-07-07 晃益齿轮工业股份有限公司 追日系统装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0155666A2 (fr) * 1984-03-19 1985-09-25 Kabushiki Kaisha Toshiba Mécanisme de poursuite solaire
DE102006036150A1 (de) * 2006-07-31 2008-02-07 Erwin Hölle Nachführbare Anlage für Solarmodule
US20090229597A1 (en) * 2008-03-11 2009-09-17 Seoul Marine Co., Ltd. Solar servo control tracking device
EP2136156A2 (fr) * 2008-06-20 2009-12-23 Jürgen Zimmermann Dispositif de poursuite destiné à l'adaptation de l'orientation d'un cadre porteur à la position du soleil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019066634A1 (fr) * 2017-09-28 2019-04-04 Universite Internationale De Rabat Traqueur à un seul axe polaire avec plusieurs points d'action pour concentreur thermo solaire

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Publication number Publication date
ES2354560A1 (es) 2011-03-16
ES2354560B1 (es) 2012-05-31

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