US20090226320A1 - System for connecting wind generator blade sections - Google Patents
System for connecting wind generator blade sections Download PDFInfo
- Publication number
- US20090226320A1 US20090226320A1 US12/398,367 US39836709A US2009226320A1 US 20090226320 A1 US20090226320 A1 US 20090226320A1 US 39836709 A US39836709 A US 39836709A US 2009226320 A1 US2009226320 A1 US 2009226320A1
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- blade sections
- blade
- sections
- skins
- wind generator
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- Abandoned
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- 230000008719 thickening Effects 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/302—Segmented or sectional blades
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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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- the present invention relates to the wind generator blades which are formed by composition by means of two or more longitudinal sections, for the purpose of facilitating the construction and essentially road transport, proposing a system for connecting sections in the constructive formation of the blades, whereby advantageous features for said function are achieved.
- wind energy which is mostly developed by means of wind generators which are driven by a blade rotor capturing the wind.
- the sweep surface of the blades of the rotor receiving the action of the wind is essential in the power generation by means of said wind generators, such that one of the factors to increase the power generation capacity is the increase in the size of the blades capturing the action of the wind.
- a system for the connection between the sections making up wind generator blades is proposed, with features which make the performance of the assembly and the effectiveness of the connection advantageous.
- the system of the invention is essentially provided for blades structurally formed by outer side blades laminated by layers of synthetic fibers, arranged on an inner resistant structure formed by stringers like longitudinal partitions, the aerodynamic profile of the blade being determined by means of outer skins which can extend, they themselves defining the trailing edge of the aerodynamic profile, whereas the formation of the leading edge of said aerodynamic profile is provided by means of a complementary part laminated in turn with synthetic fibers.
- a ring determining at its front parts channels in which there are fitted with their end edge the inner structural stringers of the blade sections, as well as the edges of the outer skins, which in the area comprised between the inner structural stringers are formed with a section thickened towards the inside, on the inside of which, as well as on the structural stringers there are defined longitudinal holes opening out into respective hollows of the corresponding walls, the securing of the connection being established by means of rods which are inserted through the opposite longitudinal holes of the skins and of the structural stringers of the sections to be connected, passing through the intermediate ring of the connections, which rods are connected in a tension threaded coupling with respect to respective end elements which are housed in the hollows into which the longitudinal holes open out.
- the hollows into which the longitudinal holes open out are made perpendicularly from the inner part of the corresponding walls, without passing to the outer part, said hollows having a cylindrical shape in one of the sections of the connection, in order to fit therein a corresponding cylindrical element provided with a threaded transverse hole, with respect to which the respective rod of the securing of the connection of the sections is coupled with threading, whereas in the other section of the connection the hollows are oblong, the incorporation of a nut being established therein on the end of the corresponding rod, to carry out the actuation on said nut through the opening of the respective oblong hollow.
- a securing for the connection between the blade sections is thus obtained which allows determining a resistant fastening with complete precision by means of tightening the nuts which are arranged on the rods of the connection, the assembly being very easy to carry out, since the securing rods are incorporated before the coupling in one of the sections to be connected, such that it is then only necessary to couple by insertion the second section and tighten the tension nuts for the securing on the second end of the securing rods.
- the incorporation of the intermediate ring in the connection further determines a protection preventing the defibration of the layers of fiber in the connection edge of the outer skins of the blade sections, which prevents, in the application work of the formed blade, the force of the wind from being able to cause a progressive deterioration of defibration of the skins forming the aerodynamic profile.
- making the hollows for housing the outer coupling elements of the securing rods of the connecting, at the inner part of the walls of the sections and without passing to the outside means that said walls of the sections which are connected are not very weakened, and furthermore the outer surface remains continuous, such that the efficiency of the aerodynamic profile for the performance of the blade is not affected.
- the system of the invention has truly advantageous features, acquiring its own identity and a preferred character for the securing function of the sections making up wind generator blades, compared to the already known solutions for said function.
- FIG. 1 shows an exploded perspective view of the structural assembly of a wind generator blade which is made up of two longitudinal sections, with the connection of said sections according to the invention.
- FIG. 2 is a perspective view of the blade of the previous figure in its assembled form.
- FIG. 3 is a detailed perspective view of a partial section of the previous blade, the arrangement of the structural elements of its formation being observed.
- FIG. 4 is an enlarged detail of area IV indicated in FIG. 2 , corresponding to the root of the blade.
- FIG. 5 is an enlarged detail of area V indicated in FIG. 2 , corresponding to the connection between the sections making up the blade.
- FIG. 6 is an exploded perspective view of said connection area of the sections making up the blade.
- FIG. 7 is a perspective view of the same connection area of the sections making up the blade, with the outer skins being transparent to observe the elements of the inside.
- FIG. 8 is a detail according to segment VIII-VIII indicated in FIG. 5 , the arrangement of a securing rod of the connection between the sections making up the blade being observed.
- FIG. 9 is a perspective view of the structural formation of the inner framework of the sections making up the blade.
- the object of the invention relates to a system intended to establish the securing for the connection between the sections making up the wind generator blades which are formed by independent longitudinal sections which can be separately transported, for the connection thereof at the constructive assembly site of the application wind generator.
- the system of the invention is provided essentially, but without a limiting character, for blades structurally formed by two outer side skins ( 3 ) which are arranged on an inner structure formed by stringers ( 4 ) like longitudinal partitions, such that the outer skins ( 3 ) determine the aerodynamic profile of the blade, together with a complementary part ( 5 ) defining the leading edge, the actual skins ( 3 ) forming the trailing edge by means of their prolongation until being connected in this edge, as observed in FIG. 3 , whereas the inner stringers ( 4 ) form a framework determining, together with the skins ( 3 ) a structural box along the formation of the blade, the stringers ( 4 ) being connected on the inside by means of supports ( 4 . 1 ), as observed in FIG. 9 .
- the blades thus formed can be longitudinally unitary, but with the same structural concept of the constructive formation, they can be formed by two or more longitudinal sections intended to be connected in the constructive assembly of the corresponding wind generator.
- connection between two sections ( 1 , 2 ) making up a blade is established by incorporating an intermediate ring ( 6 ) determining on its front faces grooves ( 6 . 1 ) in which the outer skins ( 3 ) and the inner stringers ( 4 ) of the sections ( 1 , 2 ) to be connected are fitted with their end edge, as observed in FIGS. 6 to 8 .
- the outer skins ( 3 ) of the sections ( 1 , 2 ) are formed, in the area comprised between the inner stringers ( 4 ), with a thickening ( 7 ) towards the inside, longitudinal holes ( 8 ) being defined in said thickening ( 7 ), as well as in the stringers ( 4 ), which holes correspond to one another in an opposite manner in both sections ( 1 , 2 ) and which also correspond with respective through holes in the intermediate ring ( 6 ).
- the longitudinal holes ( 8 ) open out into corresponding sections ( 1 , 2 ) in respective hollows ( 9 , 10 ) made perpendicularly at the inner part of the walls in which said longitudinal holes ( 8 ) are defined.
- the hollows ( 9 ) into which the longitudinal holes ( 8 ) open out are cylindrical and therein there are fitted corresponding cylindrical elements ( 11 ) provided with a threaded transverse hole ( 11 . 1 ) for the threaded coupling of the end of a rod ( 12 ) which is inserted through the respective longitudinal hole ( 8 ).
- the hollows ( 10 ) into which the longitudinal holes ( 8 ) open out are oblong, a stop washer ( 13 ) and a nut ( 14 ) which is incorporated on the other end of the rod ( 12 ) passing through the respective longitudinal hole ( 8 ) being housed in each of such hollows, such that said nut ( 14 ) can be actuated through the opening of the oblong hollow ( 10 ), to thereby tighten the tension of the rod ( 12 ).
- the intermediate ring ( 6 ) is inserted, making the rods ( 12 ) pass through the holes of said ring ( 6 ), which is taken in until abutting against the section ( 1 ), and in this arrangement, in order to establish the connection of the section ( 2 ), both parts are inserted in relation to one another, making the rods ( 12 ) be introduced through the longitudinal holes ( 8 ) of said section ( 2 ), up to the oblong hollows ( 10 ) thereof, wherein the washers ( 13 ) and the corresponding nuts ( 14 ) are incorporated on the end of the rods ( 12 ), such that by tightening the nuts ( 14 ) a tension of the rods ( 12 ) ensuring the connection between the sections ( 1 ) and ( 2 ) is obtained, as depicted in FIG. 8 .
- the actuation on the tightening nuts ( 14 ) for the securing of the connection is in any case practicable from inside the blade, since the connection of the sections ( 1 , 2 ) is established in a mid-area of the blade, wherein the inner space is sufficient for the entrance of an operator.
- the incorporation of the intermediate ring ( 6 ) in the connection determines in turn a protection on the edge of the outer skins ( 3 ) of the sections ( 1 , 2 ) which are connected, preventing the defibration of said skins from their edges by the action of the wind in the function of the application work of the blade.
Abstract
The invention relates to a system for connecting wind generator blade sections, preferably for the application in the connection of blade sections (1, 2), the formation of which comprises skins (3) determining the outer aerodynamic profile, arranged on inner stringers (4) like longitudinal partitions, the connection between the sections (1, 2) being established by means of rods (12) which are included through holes (8) defined in a longitudinal direction on the inside of the skins (3) and of the stringers (4) in the sections (1, 2), with the threaded connection of said rods (12) at one end on respective elements (11) which are fitted in one of the sections (1) and the tension is tightened by means of corresponding nuts (14) which are incorporated on the other end of said rods in the other section (2).
Description
- The present invention relates to the wind generator blades which are formed by composition by means of two or more longitudinal sections, for the purpose of facilitating the construction and essentially road transport, proposing a system for connecting sections in the constructive formation of the blades, whereby advantageous features for said function are achieved.
- The worldwide demand for renewable energy in order to deal with climate change and maintain an expectation of power production without depending on non-renewable natural resources involves in a very relevant manner wind energy, which is mostly developed by means of wind generators which are driven by a blade rotor capturing the wind.
- The development of wind generators and their application to power production by means of using the wind requires, however, wind generators with increasingly greater rated power which are more efficient and have a lower cost per kilowatt of the power produced.
- The sweep surface of the blades of the rotor receiving the action of the wind, among other aspects, is essential in the power generation by means of said wind generators, such that one of the factors to increase the power generation capacity is the increase in the size of the blades capturing the action of the wind.
- Exceeding a measurement of the size of the blades of the wind generators entails, however, a series of collateral problems because of the difficulties that arise both in the transport aspect, due to the existing vehicles and highway traffic regulations, and in the aspect of the actual constructive assembly of the wind generator, due to the types of cranes which must be used.
- Indeed, from 35 meters in length onwards, wind generator blades have large transport difficulties, since they require special transport means, which are very expensive.
- To solve this problem, the solution of forming blades by means of longitudinal sections is already known, which sections can be independently transported for their connection at the installation site of the wind generator and even in the constructive assembly thereof.
- This involves an advantage for large blades (between 40 and 60 meters in length) which are already demanded by the wind sector, but also for more traditional blades (between 30 and 40 meters in length), because since they can be made in sections of between 15 and 20 meters in length, they can be transported with normal means, a reduction in the transport cost being achieved which is advantageously greater than the cost of forming the independent sections and connecting them in the constructive assembly of the blades.
- In this sense, several systems have been developed for connecting the sections making up wind generator blades, which are formed by the connection of longitudinal sections, such as for example the solution of Patent ES 9901177 but the solutions known in such sense generally have deficiencies relating to the difficulty of the assembly and to the efficiency of the securing determining the connection between the sections.
- According to the invention, a system for the connection between the sections making up wind generator blades is proposed, with features which make the performance of the assembly and the effectiveness of the connection advantageous.
- The system of the invention is essentially provided for blades structurally formed by outer side blades laminated by layers of synthetic fibers, arranged on an inner resistant structure formed by stringers like longitudinal partitions, the aerodynamic profile of the blade being determined by means of outer skins which can extend, they themselves defining the trailing edge of the aerodynamic profile, whereas the formation of the leading edge of said aerodynamic profile is provided by means of a complementary part laminated in turn with synthetic fibers.
- In the connection of the sections making up the blades there is arranged a ring determining at its front parts channels in which there are fitted with their end edge the inner structural stringers of the blade sections, as well as the edges of the outer skins, which in the area comprised between the inner structural stringers are formed with a section thickened towards the inside, on the inside of which, as well as on the structural stringers there are defined longitudinal holes opening out into respective hollows of the corresponding walls, the securing of the connection being established by means of rods which are inserted through the opposite longitudinal holes of the skins and of the structural stringers of the sections to be connected, passing through the intermediate ring of the connections, which rods are connected in a tension threaded coupling with respect to respective end elements which are housed in the hollows into which the longitudinal holes open out.
- In the sections which are connected, the hollows into which the longitudinal holes open out are made perpendicularly from the inner part of the corresponding walls, without passing to the outer part, said hollows having a cylindrical shape in one of the sections of the connection, in order to fit therein a corresponding cylindrical element provided with a threaded transverse hole, with respect to which the respective rod of the securing of the connection of the sections is coupled with threading, whereas in the other section of the connection the hollows are oblong, the incorporation of a nut being established therein on the end of the corresponding rod, to carry out the actuation on said nut through the opening of the respective oblong hollow.
- A securing for the connection between the blade sections is thus obtained which allows determining a resistant fastening with complete precision by means of tightening the nuts which are arranged on the rods of the connection, the assembly being very easy to carry out, since the securing rods are incorporated before the coupling in one of the sections to be connected, such that it is then only necessary to couple by insertion the second section and tighten the tension nuts for the securing on the second end of the securing rods.
- The incorporation of the intermediate ring in the connection further determines a protection preventing the defibration of the layers of fiber in the connection edge of the outer skins of the blade sections, which prevents, in the application work of the formed blade, the force of the wind from being able to cause a progressive deterioration of defibration of the skins forming the aerodynamic profile.
- In addition, making the hollows for housing the outer coupling elements of the securing rods of the connecting, at the inner part of the walls of the sections and without passing to the outside, means that said walls of the sections which are connected are not very weakened, and furthermore the outer surface remains continuous, such that the efficiency of the aerodynamic profile for the performance of the blade is not affected.
- Due to the foregoing, the system of the invention has truly advantageous features, acquiring its own identity and a preferred character for the securing function of the sections making up wind generator blades, compared to the already known solutions for said function.
-
FIG. 1 shows an exploded perspective view of the structural assembly of a wind generator blade which is made up of two longitudinal sections, with the connection of said sections according to the invention. -
FIG. 2 is a perspective view of the blade of the previous figure in its assembled form. -
FIG. 3 is a detailed perspective view of a partial section of the previous blade, the arrangement of the structural elements of its formation being observed. -
FIG. 4 is an enlarged detail of area IV indicated inFIG. 2 , corresponding to the root of the blade. -
FIG. 5 is an enlarged detail of area V indicated inFIG. 2 , corresponding to the connection between the sections making up the blade. -
FIG. 6 is an exploded perspective view of said connection area of the sections making up the blade. -
FIG. 7 is a perspective view of the same connection area of the sections making up the blade, with the outer skins being transparent to observe the elements of the inside. -
FIG. 8 is a detail according to segment VIII-VIII indicated inFIG. 5 , the arrangement of a securing rod of the connection between the sections making up the blade being observed. -
FIG. 9 is a perspective view of the structural formation of the inner framework of the sections making up the blade. - The object of the invention relates to a system intended to establish the securing for the connection between the sections making up the wind generator blades which are formed by independent longitudinal sections which can be separately transported, for the connection thereof at the constructive assembly site of the application wind generator.
- The system of the invention is provided essentially, but without a limiting character, for blades structurally formed by two outer side skins (3) which are arranged on an inner structure formed by stringers (4) like longitudinal partitions, such that the outer skins (3) determine the aerodynamic profile of the blade, together with a complementary part (5) defining the leading edge, the actual skins (3) forming the trailing edge by means of their prolongation until being connected in this edge, as observed in
FIG. 3 , whereas the inner stringers (4) form a framework determining, together with the skins (3) a structural box along the formation of the blade, the stringers (4) being connected on the inside by means of supports (4.1), as observed inFIG. 9 . The blades thus formed can be longitudinally unitary, but with the same structural concept of the constructive formation, they can be formed by two or more longitudinal sections intended to be connected in the constructive assembly of the corresponding wind generator. - According to the system of the invention, the connection between two sections (1, 2) making up a blade is established by incorporating an intermediate ring (6) determining on its front faces grooves (6.1) in which the outer skins (3) and the inner stringers (4) of the sections (1, 2) to be connected are fitted with their end edge, as observed in
FIGS. 6 to 8 . - In the end part corresponding to the connection, the outer skins (3) of the sections (1, 2) are formed, in the area comprised between the inner stringers (4), with a thickening (7) towards the inside, longitudinal holes (8) being defined in said thickening (7), as well as in the stringers (4), which holes correspond to one another in an opposite manner in both sections (1, 2) and which also correspond with respective through holes in the intermediate ring (6).
- The longitudinal holes (8) open out into corresponding sections (1, 2) in respective hollows (9, 10) made perpendicularly at the inner part of the walls in which said longitudinal holes (8) are defined.
- In one of the blade sections, for example, the section (1), the hollows (9) into which the longitudinal holes (8) open out are cylindrical and therein there are fitted corresponding cylindrical elements (11) provided with a threaded transverse hole (11.1) for the threaded coupling of the end of a rod (12) which is inserted through the respective longitudinal hole (8).
- In the other blade section, in this case the section (2), the hollows (10) into which the longitudinal holes (8) open out are oblong, a stop washer (13) and a nut (14) which is incorporated on the other end of the rod (12) passing through the respective longitudinal hole (8) being housed in each of such hollows, such that said nut (14) can be actuated through the opening of the oblong hollow (10), to thereby tighten the tension of the rod (12).
- In such conditions, to establish the securing for the connection between the sections (1, 2), first the cylindrical elements (11) are inserted in the hollows (9) of the section (1) and respective rods (12) are introduced through the corresponding longitudinal holes (8), which rods are coupled by threading on the mentioned cylindrical elements (11), whereby said rods (12) are fixed with respect to the section (1), axially projecting from the longitudinal holes (8).
- Once so, the intermediate ring (6) is inserted, making the rods (12) pass through the holes of said ring (6), which is taken in until abutting against the section (1), and in this arrangement, in order to establish the connection of the section (2), both parts are inserted in relation to one another, making the rods (12) be introduced through the longitudinal holes (8) of said section (2), up to the oblong hollows (10) thereof, wherein the washers (13) and the corresponding nuts (14) are incorporated on the end of the rods (12), such that by tightening the nuts (14) a tension of the rods (12) ensuring the connection between the sections (1) and (2) is obtained, as depicted in
FIG. 8 . - The hollows (9, 10) into which the longitudinal holes (8) of the sections (1, 2) open out do not pass to the outside of the outer skins (3) of the sections (1, 2), such that the aerodynamic profile of the blade is not affected by the securing of the connection and furthermore, the structural weakening due to the mentioned hollows (9, 10) does not affect the resistance of the blade for its function. The actuation on the tightening nuts (14) for the securing of the connection is in any case practicable from inside the blade, since the connection of the sections (1, 2) is established in a mid-area of the blade, wherein the inner space is sufficient for the entrance of an operator.
- The incorporation of the intermediate ring (6) in the connection determines in turn a protection on the edge of the outer skins (3) of the sections (1, 2) which are connected, preventing the defibration of said skins from their edges by the action of the wind in the function of the application work of the blade.
Claims (9)
1.-6. (canceled)
7. A system for connecting wind generator blade sections, comprising: a first blade section; a second blade section, each of the blade sections having skins arranged on an inner structure formed by stringers arranged as longitudinal partitions; and a connection between the blade sections, the connection including rods which pass through opposing longitudinal holes of the blade sections, and elements which are fitted in one of the sections, a first end of each of the rods being connected to a respective one of the elements by a threaded connection, the connection further including a respective nut on a second end of each rod and practicably incorporated in the other section, which nuts are turnable to tighten tension of the blade sections and compress the blade sections frontally against one another.
8. The system for connecting wind generator blade sections according to claim 7 , wherein the elements on which the rods are threaded are cylindrical elements with a threaded transverse hole, said elements being fitted in corresponding cylindrical hollows into which the longitudinal holes of the first blade section open, the cylindrical hollows being perpendicular at an inner part of the blade section walls in which the corresponding longitudinal holes are defined.
9. The system for connecting wind generator blade sections according to claim 7 , wherein the nuts which are practicably incorporated on the second end of the rods are housed in oblong hollows into which the longitudinal holes of the second section open, the oblong holes being made at an inner part of the blade section walls in which the corresponding longitudinal holes are defined, whereby the nuts can be actuated through the openings of said oblong hollows.
10. The system for connecting wind generator blade sections according to claim 8 , wherein the cylindrical hollows are defined in the skins of the first blade section and only penetrate partially in the thickness of the skins, without affecting an outer surface thereof.
11. The system for connecting wind generator blade sections according to claim 9 , wherein the oblong hollows are defined in the skins of the second blade section and only penetrate partially in the thickness of the skins, without affecting an outer surface thereof.
12. The system for connecting wind generator blade sections according to claim 8 , wherein the skins of the blade sections have, in ends of the blade sections to be connected together, an area between the inner stringers with a thickening, the longitudinal holes and the corresponding hollows being provided in the thickening.
13. The system for connecting wind generator blade sections according to claim 9 , wherein the skins of the blade sections have, in ends of the blade sections to be connected together, an area between the inner stringers with a thickening, the longitudinal holes and the corresponding hollows being provided in the thickening.
14. The system for connecting wind generator blade sections according to claim 7 , and further comprising an intermediate ring arranged between the blade sections, the intermediate ring having front faces with grooves in which end edges of the skins and the inner stringers of the blade sections which are connected are fitted, said intermediate ring establishing a reinforcement that prevents defibration of the skins from edges of the connection.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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ES200800641 | 2008-03-05 | ||
ES200800641A ES2364258B1 (en) | 2008-03-05 | 2008-03-05 | AEROGENERATOR BLADES SECTION UNION SYSTEM |
Publications (1)
Publication Number | Publication Date |
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US20090226320A1 true US20090226320A1 (en) | 2009-09-10 |
Family
ID=41053783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/398,367 Abandoned US20090226320A1 (en) | 2008-03-05 | 2009-03-05 | System for connecting wind generator blade sections |
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US (1) | US20090226320A1 (en) |
ES (1) | ES2364258B1 (en) |
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US9863258B2 (en) | 2012-09-26 | 2018-01-09 | Blade Dynamics Limited | Method of forming a structural connection between a spar cap and a fairing for a wind turbine blade |
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ES2364258A1 (en) | 2011-08-30 |
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