WO2014117283A1 - Ensemble support pour collecteur cylindro-parabolique - Google Patents

Ensemble support pour collecteur cylindro-parabolique Download PDF

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Publication number
WO2014117283A1
WO2014117283A1 PCT/CH2014/000010 CH2014000010W WO2014117283A1 WO 2014117283 A1 WO2014117283 A1 WO 2014117283A1 CH 2014000010 W CH2014000010 W CH 2014000010W WO 2014117283 A1 WO2014117283 A1 WO 2014117283A1
Authority
WO
WIPO (PCT)
Prior art keywords
trough collector
collector according
support structure
support
trough
Prior art date
Application number
PCT/CH2014/000010
Other languages
German (de)
English (en)
Inventor
Sergio GRANZELLA
Original Assignee
Airlight Energy Ip 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 Airlight Energy Ip Sa filed Critical Airlight Energy Ip Sa
Publication of WO2014117283A1 publication Critical patent/WO2014117283A1/fr

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
    • F24S25/70—Arrangement of stationary mountings or supports for solar heat collector modules with means for adjusting the final position or orientation of supporting elements in relation to each other or to a mounting surface; with means for compensating mounting tolerances
    • 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
    • F24S25/60—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules
    • F24S25/61—Fixation means, e.g. fasteners, specially adapted for supporting solar heat collector modules for fixing to the ground or to building structures
    • 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
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/45—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
    • 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
    • F24S2025/01—Special support components; Methods of use
    • F24S2025/015—Supports with play between elements
    • 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
    • F24S2025/01—Special support components; Methods of use
    • F24S2025/019—Means for accommodating irregularities on mounting surface; Tolerance compensation means
    • 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 present invention relates to a bearing assembly for a trough collector according to the preamble of claim 1.
  • the radiation of the sun is mirrored by collectors with the help of the concentrator and focused specifically on a place in which thereby high temperatures.
  • the concentrated heat can be dissipated and used to operate thermal engines such as turbines, which in turn drive the generating generators.
  • Solar tower power plant systems have a central, raised (on the "tower") mounted absorber for the hundreds to thousands of individual mirrors with mirrored sunlight, with which the radiation energy of the sun over the many mirrors or concentrators point concentrated in the absorber and on Reason the so achievable high concentration temperatures up to 1300 ° C can be achieved, which is favorable for the efficiency of the downstream thermal machines (usually a steam or fluid turbine power plant for power generation).
  • Solar tower power plants have (despite the achievable high temperatures) because of their own, sometimes difficult technology to this day also found no greater distribution.
  • Parabolic trough power plants are widespread and have large number of trough collectors, which have long concentrators with small transverse dimensions, and thus do not have a focal point but a focal line, which fundamentally differentiates them in their construction from the Dish Sterling and solar tower power plants.
  • An absorber line for the concentrated heat is arranged in the focal line, wherein the absorber line is flowed through by a medium which absorbs the heat and transports it via a pipeline network to the powerhouse of the power plant.
  • a heat-transporting medium is a fluid such. Thermal oil or superheated steam in question, wherein the temperatures at the outlet of the trough collector to about 500 ° C or more, z.Bsp. 650 ° C to reach.
  • the support structure over its entire length must be designed resiliently stiff, not only in the vertical (weight), but also from various directions. This is especially true when a film which is stretched in a pressure cell and which has no intrinsic stability is used as the concentrator and therefore deforms slightly when the support structure is twisted. However, deformation is also critical in conventional concentrators for the achievable concentration of the trough collector. It follows that, on the one hand, the support structure must be flexible in terms of thermal expansion compared to the stationary support and, on the other hand, rigid in terms of stress during operation, which leads to increased costs, for example in the framework of the supporting structure to provide such that the necessary rigidity of the support structure against bending and torsion, etc. is not affected.
  • a trough collector according to the characterizing features of claim 1. Due to the fact that the trough collector stationarily arranged in the power station can carry out a relative movement in addition to the pivoting of the supporting structure, thermal expansion with respect to the ground no longer has to be structurally compensated in the structure itself, but can readily be permitted, so that also a structure With very large dimensions conventional and simple (and thus cost) can be realized with the necessary rigidity.
  • a gutter collector designed according to the invention is also earthquake-proof, if the mounting of the support structure also permits, for example, movements of the substrate taking place transversely to its length.
  • the trough collector is provided with a suspension bearing its support structure, which allows in a structurally simplest way to rigidly form the body of the trough collector formed by the support structure regardless of the thermal expansion and at the same time, for example by earthquake gegeboden ground movements to isolate.
  • FIG. 1 a shows schematically a trough collector of a conventional type
  • FIG. 1 b shows a trough collector of conventional type with a supporting structure for the concentrator according to WO 2009/000147
  • FIG. 2 shows a cross section through a first embodiment of the inventive trough collector at the location of a bearing ring
  • FIG. 3 shows a cross section through a second embodiment of the inventive trough collector at the location of a bearing ring
  • FIG. 4 shows a cross section through a third embodiment of the annular collector according to the invention at the location of a bearing collar
  • FIG. 5 shows a view of a schematically illustrated storage unit according to a preferred embodiment of the present invention
  • FIG. 6 shows a cross section through the storage unit along the line AA
  • Figure 7 is a view of a trough collector according to the invention.
  • FIG. 8 schematically shows a view of a trough collector from above, during or after floor distortions.
  • FIG. 1 a shows a trough collector 1 of a conventional type, with a concentrator 2 which is parabolically curved in cross-section and reflects incident solar rays 3, the reflected rays 4 being concentrated in a focal zone in which a absorber tube 5 is arranged.
  • a suitably trained, omitted to relieve the figure support structure supports the concentrator 2 twist-proof, and usually consists of a framework of steel.
  • the absorber tube 5 Via a feed line 6, the absorber tube 5 is charged with a heat-transporting medium, which flows through it, thereby from an input temperature T E is heated to an initial temperature T A and finally discharged through a discharge line 7.
  • Schematically illustrated joints 8 allow the pivoting of the concentrator 2 about the pivot axis 10, so that the concentrator 2 can be continuously aligned with the current position of the sun.
  • a bearing assembly 11 as part of the trough collector 1 is designed to support the support structure and thus the concentrator 2 pivotally and has over the length of the trough collector 1 arranged distributed storage units 12.
  • the arrow L points in the longitudinal direction, the arrow Q in the transverse direction of the trough collector. 1
  • FIG. lb shows a cross section through a conventional trough collector 15, which is designed according to WO 2009/135330.
  • the disclosure of WO 2009/135330 is incorporated herein by express reference.
  • the arrows L, Q denote the longitudinal direction and the transverse direction in the illustrated trough collector 15.
  • This is provided with a dashed line indicated pressure cell 16, consisting of an upper, transparent to the sun's rays membrane 17 and a lower membrane 18, wherein the lower membrane 18th has a sun-ray reflecting layer and thus forms the concentrator of the trough collector 15.
  • Sunbeams reflected by the lower membrane 18 fall into a secondary concentrator 19, which in turn reflects it back onto an absorber tube 20 which absorbs its heat.
  • the gutter collector shown in the figure is symmetrical to a symmetry line 21,
  • the pressure cell 16 is clamped here in side members 22, which rest on cross braces 23 and in turn pass into a bearing ring 24 with a circular arc section 25, which in turn rests on roller supports 26 with rollers 27 and thus can roll on this, causing a pivoting of the entire support structure (Here side member 22, cross braces 23, bearing ring 24 with the associated framework) around the pivot axis 28 allowed.
  • the trough collector 15 is aligned according to the current position of the sun.
  • the pivot axis 28 is located in the center 30 of the bearing ring 24 (see the radius 31 shown) and at the same time in the heavy line 32 of the support structure.
  • the support structure shown is made of concrete, which allows a cost-effective production.
  • bearing rings 24 are provided at a distance from each other, which is sufficient for the storage of the trough collector 15 on the substrate 33.
  • the storage of the trough collector 15 has correspondingly a plurality of spaced over the length of the trough collector 15 bearing units 34.
  • Figure 2 shows accordingly a section through an inventive storage unit 40, for example, a trough collector 15 ( Figure lb) which supports a bearing ring 24 relative to the substrate 33.
  • the bearing ring 24 is shown to relieve the figure only partially, namely in a lower region in which it rests on rollers 27 and can be pivoted on these for Verschwen- kung also omitted to relieve the figure further support structure of the trough collector, s. the double arrow 29.
  • a support element 41 on which roller carriers 26 for the rollers 27 are arranged.
  • the support element 41 is stiff enough to carry the weight of the associated section of the trough collector applied over the bearing ring 24 and rests laterally on rollers 42 on which it can roll in the longitudinal direction, ie in a direction perpendicular to the plane of the drawing.
  • a bottom element 43 in turn carries the rollers 42.
  • the person skilled in the art can form the schematically illustrated bearing unit 44 in a specific case, depending on the requirements, and, for example, instead of the running surfaces 44, 45 NEN for the rollers 42, or keep the rollers 42 with a suitable cage (which in turn is not shown to relieve the figure) in position.
  • the bottom element 43 can also be designed as an elongated trough, up to the entire length of the trough collector.
  • the support member 41 in turn be formed as long or shorter, where it is then used several times.
  • the skilled person can make the appropriate training of the storage unit 40 in the specific case.
  • storage of the trough collector that this has at least one bearing unit 40 which is formed for at least one additional in addition to the pivoting of the support structure and independent of this relative movement of the support structure relative to the ground.
  • the trough collector or its support structure can thus freely expand in accordance with a temperature change, the bearing allowing the resulting relative movement with respect to the ground. In extreme cases, so that the support structure can be formed as a completely rigid beam.
  • FIG. 3 shows a section through a second embodiment of the trough collector according to the invention at the location of a bearing collar 24.
  • the bearing unit 48 is modified and designed here as a hanging bearing, with the support element 49 preferably being suspended, which in turn has at least one associated section of the support structure of the trough collector carries (or the whole supporting structure, when the bearing unit 48 extends over its entire length).
  • Suspension elements for the support element 49 which are preferably designed here as tie rods 50, are suitably connected to the support element 49 (for example screwed tightly) and in turn hang on the axis 51 of a respective pair of wheels 52 (for example via a roller bearing which is in an end-side Eye of the tie rods 50 is arranged).
  • the pairs of wheels 52 can in turn roll in the longitudinal direction of the trough collector on treads 53 formed here as projecting side support 54 supporting elements of the bottom member 55th
  • This hanging arrangement has, inter alia, the advantage that by simple means a tolerance of the bearing unit for relative movements can also be achieved transversely to the length of the trough collector.
  • the tie rods 50 can be attached to the support via rubber bearings. gerelement 49 are set so that it is slightly movable in the transverse direction Q.
  • 50 flexible suspension elements such as wire ropes may be provided instead of tie rods, whereby the possible relative movement between the substrate 33 and the support member 49 (and thus the support structure of the trough collector) longitudinally, transversely and also according to the double arrow 58 about the vertical axis 59 of the stored Section of the trough collector can be done.
  • the damping arrangement for this purpose comprises a per se known oil-filled piston-cylinder assembly 56 which acts in the transverse direction Q, and an oil-filled piston-cylinder arrangement 57 for the longitudinal direction L.
  • FIG. 4 shows a section through a third embodiment of the trough collector according to the invention at the location of a bearing collar 24.
  • the bearing unit 60 is again designed to be suspended, wherein the bearing element 61 is preferably of the same design as that of the embodiment shown in FIG.
  • the suspension elements are designed here as traction arms 62 or tie rods, which are mounted here on both sides in spherical bearings 63.
  • the term “Pendellager” includes bearings that allow a free pivoting movement of the generally vertically arranged suspension element (here: traction arms 62) in the longitudinal and transverse directions L, Q (and thus in any direction parallel to the substrate 33) relative to the bearing carrier ,
  • the suspension elements designed here as traction arms 62 are set freely pivotable on the support element 61.
  • a hanging storage generally has the advantage that it is self-stabilizing due to the weight on their operating weight, ie, wants to return to its neutral position.
  • bearings are symbolized with a circle for the fixed bearing part and a point lying in a circle for the movable bearing part.
  • the bearing unit 60 is further provided with a bottom element 64, the lateral support elements are in turn formed as over the support member 61 projecting side support 65, so that a arranged on the side support 65 self-aligning bearing 63 is located above an associated by the respective pulling arm 62 self-aligning bearing 63 of the support member 61 ,
  • the illustrated placed hanging storage self-centering, but allows a free relative movement of the support structure relative to the substrate 33 not only longitudinally but also transversely to this and also about its vertical axis 59 (double arrow 58).
  • a damper assembly which is formed as a cylinder-piston assembly 56,57 and acts in the longitudinal direction L and in the transverse direction Q.
  • the arrangement shown can be formed continuously over the entire length of the trough collector, in which case, for example, the tension arms 62 are arranged in pairs at a distance over the length of the support structure.
  • FIG. 5 schematically shows a top view of a preferred embodiment of a storage unit 70 according to the invention, again using the example of a trough collector designed according to WO 2009/135330, of which only the lower part of the storage ring 24 is indicated by dashed lines in the figure, so that the arranged on the ⁇ uflagerelement 71 rollers 26 with their roller carriers 27 can be seen.
  • Four bottom supports 73 with an upper, projecting region 74 are part of the floor element, which, for example, depending on the nature of the substrate 33, may or may not have an additional foundation connecting the floor supports 73.
  • Pendulum bearings 63 are preferably provided in order to suspend the support element 71 operatively via suspension elements 75 designed as tension arms 75 on the floor supports 73. It also results in the embodiment shown here that the suspension of the support element via substantially vertically suspended suspension elements takes place, which engage with a lower end of the support element 71 and with an upper end on overhanging portions 74 of the bottom element.
  • the suspension elements are defined pivotably on the bottom element and on the support element, s. the double arrows in the Zugarmen 75, which indicate possible Verschwenkungsraumen in the two dimensions parallel to the substrate 33.
  • suspension elements designed as tension arms 75 in the embodiment shown are arranged at the imaginary corners of a rectangle and enclose the support element between them so that it is mounted symmetrically.
  • the expert may also give preference in the specific case of an asymmetric arrangement.
  • FIG. 6 shows a vertical section through the suspension of the support element 71 at the location of a load carrier 73 along the line AA of FIG. 5. Shown are the bottom support 73, its upper, projecting region 74, a section 82 of the support element 71 and the two self-aligning bearings 63, which store their associated and extending therethrough pull arm 62 at both ends, such that there is a free pivoting of the pull arm 62 in the sense of the present invention.
  • the upper of the self-aligning bearing 63 has in the illustrated embodiment a fixed to the projecting portion 74 pan 75 with a spherical bearing surface 76 and further a locking element 77, which in turn has a counter-bearing surface 76 formed on the spherical bearing surface 78.
  • the spherical bearing surfaces 76,78 can slide freely on each other in operation, which gives the pendulum bearing 63 its mobility.
  • the suspension element designed here as a pull arm 63 runs through an opening in the locking element 76 and protrudes out of it with its one end 79, wherein the lock nuts 80, 81 form a stop which secures the pull arm 75 in the support 63.
  • a sensor 82 is arranged on the pull arm 63, which detects the load acting in the pull arm 63, possibly also the current orientation of the pull arm 63, and generates corresponding signals which are transmitted via a signal line (or via a signal line omitted to relieve the figure) wireless transmission) can be evaluated by a controller of the trough collector in order to continuously record the current operating state of the storage.
  • Figure 7 shows a view of a portion of a trough collector 85 according to the invention with a schematically illustrated support structure 86, which has a frame 87 in which a pressure cell 88 is clamped, in which there is a concentrator not shown here.
  • each bearing ring 24 is mounted on the substrate 33 via a bearing unit 70, as shown in FIG.
  • the support structure 86 can be pivoted relative to the base 33 about its axis of rotation 10 (FIG. 1b) and also exert a relative movement longitudinally (longitudinal direction L) with respect to the substrate 33, as can a relative movement in the transverse direction Q and in the case of corresponding ground movements (earthquakes) the vertical axis 59 of the affected storage unit 70.
  • vertical ground movements are often not critical, since the support structure of a trough collector is stiff against vertical load due to their weight.
  • the support elements 71 remain stationary in the above-mentioned relative movements relative to the ground to the axis of rotation 10 of the support structure 86. This arrangement also permits storage of (but not limited to) a completely rigid bearing structure 86.
  • FIG. 8 schematically shows a view from above of the trough collector 85 and through it on bearing units 70 in the event that a ground movement or an earthquake takes place or has taken place.
  • the originally aligned bearing units 70 have shifted from each other, s. the different arrangement of the bottom support 73, wherein the support structure of the trough collector has remained decoupled from this movement, which can be seen on the still unchanged the same aligned support elements 71.
  • the skilled person can provide in the specific case, conventionally form one of the bearing units to firmly anchor the gutter collector at a point of the subsurface.

Abstract

L'invention concerne un collecteur cylindro-parabolique présentant une structure porteuse pivotante pour un concentrateur, laquelle est montée sur le sol par l'intermédiaire d'un montage. Ce dernier comprend au moins une unité support conçue pour que la structure porteuse puisse effectuer au moins un mouvement relatif par rapport au sol en plus d'un pivotement et indépendamment de celui-ci. De ce fait, il est possible de réaliser une structure porteuse simple et peu onéreuse pour le collecteur cylindro-parabolique, laquelle permet une dilatation thermique de ce dernier par rapport au sol et offre, en même temps, une protection contre des mouvements du sol tels que les tremblements de terre.
PCT/CH2014/000010 2013-02-04 2014-01-28 Ensemble support pour collecteur cylindro-parabolique WO2014117283A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00393/13A CH707601A1 (de) 2013-02-04 2013-02-04 Rinnenkollektor mit einer verschwenkbaren Tragstruktur.
CH00393/13 2013-02-04

Publications (1)

Publication Number Publication Date
WO2014117283A1 true WO2014117283A1 (fr) 2014-08-07

Family

ID=47683397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2014/000010 WO2014117283A1 (fr) 2013-02-04 2014-01-28 Ensemble support pour collecteur cylindro-parabolique

Country Status (2)

Country Link
CH (1) CH707601A1 (fr)
WO (1) WO2014117283A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019219128A1 (fr) * 2018-05-17 2019-11-21 Ryszard Dzikowski Centrale hélioélectrique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587952A (en) * 1985-05-10 1986-05-13 Richardson John L Passive solar water heater
WO2009048879A2 (fr) * 2007-10-12 2009-04-16 Megawatt Solar, Inc. Procédés, systèmes et supports lisibles par ordinateur permettant de commander l'orientation d'un système de collecte photovoltaïque pour suivre le mouvement apparent du soleil
US20110041894A1 (en) * 2009-08-24 2011-02-24 Liao Henry H Method and Apparatus to Lower Cost Per Watt with Concentrated Linear Solar Panel
FR2954818A1 (fr) * 2009-12-29 2011-07-01 C3Tech Generateur d'energie thermique solaire a accumulation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587952A (en) * 1985-05-10 1986-05-13 Richardson John L Passive solar water heater
WO2009048879A2 (fr) * 2007-10-12 2009-04-16 Megawatt Solar, Inc. Procédés, systèmes et supports lisibles par ordinateur permettant de commander l'orientation d'un système de collecte photovoltaïque pour suivre le mouvement apparent du soleil
US20110041894A1 (en) * 2009-08-24 2011-02-24 Liao Henry H Method and Apparatus to Lower Cost Per Watt with Concentrated Linear Solar Panel
FR2954818A1 (fr) * 2009-12-29 2011-07-01 C3Tech Generateur d'energie thermique solaire a accumulation

Also Published As

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