WO2012060370A1 - 風力発電装置のナセルカバー接続部構造 - Google Patents
風力発電装置のナセルカバー接続部構造 Download PDFInfo
- Publication number
- WO2012060370A1 WO2012060370A1 PCT/JP2011/075171 JP2011075171W WO2012060370A1 WO 2012060370 A1 WO2012060370 A1 WO 2012060370A1 JP 2011075171 W JP2011075171 W JP 2011075171W WO 2012060370 A1 WO2012060370 A1 WO 2012060370A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- panel
- frame member
- nacelle
- nacelle cover
- end portion
- Prior art date
Links
- 238000010248 power generation Methods 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000012856 packing Methods 0.000 claims abstract description 18
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- 239000003566 sealing material Substances 0.000 claims description 14
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 10
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims 1
- 210000004907 gland Anatomy 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000007654 immersion Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
-
- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
- F05B2230/604—Assembly methods using positioning or alignment devices for aligning or centering, e.g. pins
-
- 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
- F05B2240/10—Stators
- F05B2240/14—Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
-
- 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
- Y02E10/728—Onshore wind turbines
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a nacelle cover connection structure of a wind turbine generator.
- the wind turbine generator is a device that generates electric power from a generator driven by rotating a rotor head provided with wind turbine blades by receiving wind power and accelerating this rotation with a speed increaser.
- a rotor head is mounted on the wind turbine tower, mounted at the end of the yawable nacelle, and supported so as to be rotatable about a generally horizontal lateral rotational axis.
- the nacelle cover that covers the nacelle of the wind power generator is configured by connecting a plurality of panels, and the connection structure of this panel needs to be a structure that can prevent rainwater from entering the inside of the nacelle cover from inside There is.
- the connection of the panel is generally joined by a bolt, when the nacelle cover is subjected to external force by wind pressure, snow, etc., the joint of the panel joined by the bolt becomes the weakest part in terms of strength.
- the connection of the panel should have a structure such that high material distortion does not occur.
- FIG. 1 As a general structure of the connection part of a wall surface panel, there exists a technique shown, for example to patent document 1.
- the roof panel constituting the roof of the nacelle cover needs to be constructed so as to be removable.
- connection part structure of the wall surface panel shown by patent document 1 is a connection part structure of the wall surface panel used for a house, it is not the structure which considered removal and reattachment of the wall surface panel. Furthermore, the work of removing and reattaching the panels that make up the nacelle cover of the wind power generator is carried out under high altitude and strong wind environment, but the wall panel connection structure shown in Patent Document 1 is The structure does not correspond to the removal and reattachment of the panel under high altitude and strong wind environment.
- FIG. 9 As a nacelle cover connection part structure of a wind power generator, what is shown, for example to FIG. 8, FIG. 9 can be considered.
- the lower side of the upper panel (the side wall panel) 103 is suspended at the upper end portion of the lower side panel (the side wall panel) 103 during installation.
- the interference between the upper end of the panel 103 and the lower end of the upper panel 104 is not preferable because the upper end of the lower panel 103 and the upper panel 104 may be damaged.
- a waterproof material 180 such as urethane foam between the outer surface of the upper end of the lower panel 103 and the inner surface of the lower end of the upper panel 104.
- a waterproof material 180 such as urethane foam
- the seal by the waterproof material 180 breaks each time the upper panel 104 is removed. It can not be said that the structure is in consideration of the removal and reattachment of the upper panel 104.
- the panel of the nacelle cover is generally formed of a synthetic material such as fiber reinforced plastic (FRP), and providing a flange at the panel end increases the molding cost of the panel. Further, the provision of the flange serving as the projecting portion causes a problem that the transportation efficiency of the panel is deteriorated. Furthermore, it is necessary to dispose a packing 207 or the like between the flanges 241 and 231 from the viewpoint of water tightness.
- FRP fiber reinforced plastic
- An object of the present invention is to provide a nacelle cover connection structure of a wind turbine generator.
- a nacelle cover connection structure of a wind turbine generator comprises a lower panel constituting a lower portion of a side wall of a nacelle cover covering a nacelle of a wind turbine generator and an upper panel constituting an upper portion of the side wall
- a nacelle cover connecting portion structure for connecting a long first frame member is fixed to a surface inside the nacelle cover which is an upper end portion of the lower panel, and a lower end portion of the upper panel and
- the elongated second frame member is fixed to the inner surface of the nacelle cover, and the upper surface of the first frame member and the lower surface of the second frame member are abutted and fixed to each other.
- the upper end of the lower panel and the lower end of the upper panel are connected to each other on substantially the same plane, and the upper end of the lower panel is outside the nacelle with a predetermined distance from the upper end of the lower panel.
- Is provided with a covering that covers the An upper surface of the first frame member and a lower surface of the second frame member are integrally formed with the lower end portion of the upper panel so as to protrude outward of the nacelle cover from the lower end portion of the upper panel.
- a packing is interposed therebetween.
- the covering portion covering the upper end portion of the lower panel from the outside of the nacelle while keeping a predetermined distance from the upper end portion of the lower panel
- the covering portion is integrally formed with the lower end of the upper panel so as to project further outward than the lower end of the upper panel so that the upper panel is lowered while the upper panel is suspended.
- the above-mentioned covering portion is formed integrally with the lower end portion of the upper panel so as to protrude outside the nacelle cover more than the lower end portion of the upper panel, it flows downward from above the nacelle cover. Rainwater flows to the outside of the lower panel along the outside of the covering portion.
- the packing since the space between the first frame material and the second frame material for joining the upper and lower panels is sealed by the packing, when rainwater blown up by the crosswind intrudes into the inside of the covering portion However, it is possible to reliably prevent rainwater or the like from invading the joint portion of the first frame member and the second frame member. In addition, at the time of maintenance of the device in the nacelle, even if the upper panel is removed and attached again, the sealing performance by the packing is not impaired. Furthermore, when positioning the upper panel, even if the upper panel is moved, the packing does not fall off and follows the first frame member and the second frame member.
- a nacelle cover connection portion structure of a wind turbine generator comprises a lower panel constituting a lower portion of a side wall of a nacelle cover covering a nacelle of a wind turbine generator and an upper panel constituting an upper portion of the side wall
- a nacelle cover connecting portion structure for connecting a long first frame member is fixed to a surface inside the nacelle cover which is an upper end portion of the lower panel, and a lower end portion of the upper panel and
- the elongated second frame member is fixed to the inner surface of the nacelle cover, and the upper surface of the first frame member and the lower surface of the second frame member are abutted and fixed to each other.
- the upper end of the lower panel and the lower end of the upper panel are connected to each other on substantially the same plane, and the upper end of the lower panel is outside the nacelle with a predetermined distance from the upper end of the lower panel.
- the lower end of the upper panel is integrally formed with the lower end of the upper panel so as to project outward from the lower end of the upper panel, and the upper end of the lower panel faces the lower end of the covering portion.
- the portion to be formed is formed to project toward the lower end of the covering portion.
- the covering portion covering the upper end portion of the lower panel from the outside of the nacelle while separating a predetermined distance from the upper end portion of the lower panel
- the covering portion is integrally formed with the lower end of the upper panel so as to project further outward than the lower end of the upper panel so that the upper panel is lowered while the upper panel is suspended.
- the above-mentioned covering portion is formed integrally with the lower end portion of the upper panel so as to protrude outside the nacelle cover more than the lower end portion of the upper panel, it flows downward from above the nacelle cover. Rainwater flows to the outside of the lower panel along the outside of the covering portion.
- the upper end portion of the lower panel which is a portion facing the lower end of the covering portion, is formed so as to project toward the lower end of the covering portion, so rainwater blown up by the crosswind flows to the inside of the covering portion It can prevent entering.
- the waterproofness between the upper panel and the lower panel is not impaired.
- the upper end portion of the lower panel which is opposed to the lower end of the covering portion, is formed so as to project toward the lower end of the covering portion. In the vicinity of the connection portion, rigidity is improved, deformation during panel handling is reduced, and assembly work of the nacelle cover is facilitated.
- the upper surface of the first frame member is positioned above the upper end of the upper end portion of the lower panel.
- the first frame member is fixed to the lower panel, and the lower surface of the second frame member is positioned lower than the lower end of the lower end portion of the upper panel,
- the frame material of 2 is preferably fixed to the upper panel.
- the first frame member is fixed to the lower panel such that the upper surface of the first frame member is positioned above the upper end of the upper end portion of the lower panel
- the second frame member is fixed to the upper panel so that the lower surface of the lower frame of the upper panel is positioned lower than the lower end of the lower panel of the upper panel, so the upper panel is lowered while the upper panel is suspended.
- the step formed between the upper surface of the first frame member and the upper end of the upper end portion of the lower panel is sealed by a sealing material, and the second frame It is preferable that the level difference which arises between the lower surface of the material and the lower end of the lower end of the upper panel is sealed by a sealing material.
- the step generated between the upper surface of the first frame member and the upper end of the upper end of the lower panel and the step generated between the lower surface of the second frame member and the lower end of the lower end of the upper panel is sealed by the sealing material, it is possible to prevent the immersion of water from the outside to the inside of the nacelle cover more reliably.
- the second frame member has a length such that the first frame member protrudes inward of the nacelle. It is preferable that the first frame member and the second frame member have a configuration in which a level difference between the projecting end edges inside the nacelle is sealed by a sealing material.
- the length by which the first frame member protrudes to the inside of the nacelle is set longer than the length by which the second frame member protrudes to the inside of the nacelle, and the first frame member and the second frame member Since the step formed between the projecting edges inside the nacelle is sealed by the sealing material, it is possible to prevent the water from entering the inside of the nacelle cover more reliably.
- the first frame member is the upper end portion of the lower panel
- the second frame member is the above It is preferable that the lower end portion of the upper panel be bolted with a polytetrafluoroethylene washer, respectively.
- the diameter of the polytetrafluoroethylene washer is preferably equal to or less than the diameter of the bolt.
- the first frame member and the second frame member are linearly formed in their length direction. It is preferable that the extending portion is made of metal, and the portion extending curvilinearly in the longitudinal direction is made of fiber reinforced plastic.
- the first frame member and the second frame member are formed of metal at portions extending rectilinearly in their length direction, and extend curvilinearly in their length direction Because it is made of fiber reinforced plastic in the area where it is used, a standard metal frame material is used in the linear area, and a fiber reinforced plastic frame material is used only in the corner area, and the cost is low as a whole. Strength can be In addition, when wind is applied from the rear of the nacelle, stress concentration occurs at the corner portions. However, by using a fiber reinforced plastic frame material at this portion, stress concentration can be alleviated.
- the nacelle cover connection portion structure of the wind turbine generator according to the present invention removal and reattachment of the panel constituting the nacelle cover and the watertightness of the panel connection portion are sufficiently considered, and further, the strength of the panel connection portion is high. It becomes possible to satisfy efficiently the function required as a panel which constitutes the nacelle cover at low cost.
- FIG. 1 to 3 show an example of the structure of a nacelle cover to which the nacelle cover connection portion structure of the wind turbine generator according to the present invention is applied.
- the nacelle cover connection part structure of a wind power generator is applied to the nacelle cover 2 which covers the nacelle of a wind power generator.
- the nacelle is installed at the upper end of the tower and accommodates equipment such as a step-up gear and generator connected via a main shaft with a rotor attached with wind turbine blades, and the nacelle cover 2 forms the outer wall of the nacelle Member.
- the nacelle cover connection portion structure described below is a side wall in which a pair of left and right roof panels (upper panels) 4 having a substantially U-shaped cross section are arranged to be substantially parallel to each other.
- the roof panel 4 is divided into four in the axial direction of the main shaft, and both side portions of each roof panel 4 are attached to the upper end portion of the side wall panel 3 erected in the vertical direction.
- FIGS. 4 to 6 show a nacelle cover connection structure of a wind turbine generator according to a first embodiment of the present invention.
- the upper end portion 31 of the side wall panel 3 constituting the nacelle cover 2 is provided with a long first angled member (first inner surface of the nacelle cover 2).
- Frame material) 5 is fixed.
- a long second angle member (second frame member) 6 is fixed to the inner surface side of the nacelle cover 2 at the lower end portion 41 of the roof panel 4 constituting the nacelle cover 2.
- the upper surface 51 of the first angled member 5 and the lower surface 61 of the second angled member 6 are abutted and fixed to each other by the bolt 11,
- the upper end 31 of the side wall panel 3 and the lower end 41 of the roof panel 4 are connected to each other on substantially the same plane. That is, in the connection portion structure of the present embodiment, the angle members 5 and 6 are provided between the side wall panel 3 and the roof panel 4 in consideration of the removal of the roof panel 4 which is necessary at the time of maintenance which is high work on the tower. While joining, it has a structure which seals the joint surface of the angle members 5 and 6.
- the roof panel 4 projects to the outside of the nacelle cover 2 beyond the lower end 41 of the roof panel 4, that is, extends the lower end 41 downward so as to extend the lower end outlet side outward,
- a covering portion 43 integrally formed with the lower end portion 41 is provided.
- the covering portion 43 is an upper end located on the outer side of the nacelle cover 2 at a predetermined distance from the upper end portion 31 of the side wall panel 3 in the outer direction of the nacelle cover 2. This portion is provided to cover the surface of the portion 31 (the nacelle outer wall surface).
- a packing 7 having a substantially P-shaped cross section is interposed between the upper surface 51 of the first angle member 5 and the lower surface 61 of the second angle member 6, for example.
- the first angled member 5 is fixed to the nacelle inner surface side of the side wall panel 3 so that the upper surface 51 is positioned above the upper end 32 of the upper end portion 31 of the side wall panel 3. Further, the second angle member 6 is fixed to the roof panel 4 such that the lower surface 61 thereof is positioned lower than the lower end 42 of the lower end portion 41 of the roof panel 4.
- the sealing material 81 on which silicon or the like is applied is formed on this step. It is being constructed.
- the sealing material 81 prevents the inflow of the nacelle from the joint surface of the side wall panel 3 and the first angle member 5.
- a gap or a step between the lower surface 61 of the second angle member 6 and the lower end 42 of the lower end 41 of the roof panel 4 is also sealed by the sealing material 82 in order to prevent water immersion inside the nacelle. ing.
- the lengths of the upper surface 51 and the lower surface 61 of the first angle member 5 and the second angle member 6 described above be set as follows. That is, the length at which the first angle member 5 protrudes inward of the nacelle is set longer than the length at which the second angle member 6 protrudes inward of the nacelle, and the first angle member 5 and the second angle member 6 In the joint surface, a step formed between the side edges 52 and 62 to be a projecting edge inside the nacelle is sealed by a sealing material 83 such as silicon.
- the sealing material 83 prevents water immersion when the packing 7 is broken.
- the length of the upper surface 51 projecting from the upper end 31 of the side wall panel 3 toward the inner side of the nacelle is longer than the length of the lower surface 62 projecting from the lower end 41 of the roof panel 4 toward the inner side of the nacelle
- the first angle member 5 is the first edge between the side edge 52 to be the nacelle inner end face in the vertical direction and the side edge 62 to be the nacelle inner end face in the vertical direction of the second angle member 6.
- a step is formed by the angle member 5 protruding long in the nacelle inner direction.
- the sealing material 83 is applied utilizing this level difference, the joint surfaces are sealed in the same manner as the level difference described above, and it is possible to prevent water immersion when the seal by the packing 7 is broken.
- the cross sectional shape is sealed by the packing 7 having a substantially P shape, so for example, at the time of maintenance of the device in the nacelle
- the sealability by the packing 7 is not impaired unlike the seal by urethane foam or the like.
- the packing 7 does not fall off, and the sealing function is maintained following the angle members 5 and 6.
- the positioning pins 53 and the pin holes 63 can be used easily and reliably.
- the positioning pins 53 project upward from the upper surface 51 of the first angle member 5, and a plurality of the positioning pins 53 are disposed at positions shifted from the bolts 11 connecting the angle members 5 and 6.
- the pin holes 63 are through holes formed in the lower surface 61 of the second angle member 6, and are arranged such that the positioning pins 53 pass through at a predetermined roof panel mounting position.
- the roof panel 4 is lowered from the state before attachment shown in FIG. 5, and the positioning pins 53 are aligned so as to pass through the pin holes 63.
- the covering portion 43 provided on the lower end side of the roof panel 4 is lowered to a predetermined position (see FIG. 6) without interfering with the side wall panel 3. Therefore, the roof panel 4 can be easily positioned and attached to a predetermined position of the lower panel 3.
- the first angle member 5 is fastened to the upper end portion 31 of the side wall panel 3 and the second angle member 6 is fastened to the lower end portion 41 of the roof panel 4 with bolts 10 through the polytetrafluoroethylene washers 9, respectively.
- the polytetrafluoroethylene washer 9 is a component formed of a polytetrafluoroethylene resin (fluororesin) such as, for example, Teflon (registered trademark), and is flexible and excellent in heat resistance and chemical resistance. For this reason, adoption of the polytetrafluoroethylene washer 9 is effective in water stop processing of a bolt fastening part.
- the polytetrafluoroethylene washer 9 described above is desirably set so that the outer diameter thereof is equal to or less than the bearing surface diameter of the bolt 10. This is because, as shown in FIG. 4, when the polytetrafluoroethylene washer 9 has a diameter larger than the bearing surface of the bolt 10, the contact surface with the bolt bearing surface (especially, the outer periphery of the bolt bearing surface) It is because there is a risk of breakage from near the end).
- first angle member 5 and the second angle member 6 which extend linearly in the longitudinal direction are formed of metal such as steel.
- first angle member 5 and the second angle member 6 are formed of fiber reinforced plastic (FRP) in a portion extending in a curvilinear shape in their length direction, that is, a corner portion 5C shown in FIG. 3 It is done.
- FRP fiber reinforced plastic
- the nacelle cover connection portion structure of the embodiment described above is not only watertight at the connection portion between the side wall panel 3 and the roof panel 4. Sex will also be considered fully. Furthermore, since the nacelle cover connection portion structure of the embodiment described above can ensure high strength also for the panel connection portion between the side wall panel 3 and the roof panel 4, the function necessary as a panel constituting the nacelle cover 2 can be efficiently Can be satisfied at low cost. In particular, in recent years, the size of the wind power generator has been increased, and the case where the nacelle is installed at a height of about 100 m from the ground is also increasing.
- a nacelle cover connection portion structure of a wind turbine generator according to a second embodiment of the present invention will be described based on FIG.
- symbol is attached
- the nacelle cover connection part structure of this embodiment is comprised substantially similarly to the nacelle cover connection part structure of 1st embodiment, it has a different structure in the following points.
- the upper end portion 31 of the side wall panel 3A is formed so that a part thereof located at a position facing the lower end of the covering portion 43 becomes the bulging portion 33 and protrudes toward the lower end 44 of the covering portion 43 .
- the lower end 44 of the covering portion 43 is at substantially the same level as the bulging portion 33, and the opening area is narrowed by the bulging portion 33 at the lower end inlet portion of the covering portion 43.
- a packing 7 having a P-shaped cross section is interposed between the upper surface 51 of the first angle member 5 and the lower surface 61 of the second angle member 6.
- the packing between the upper surface 51 of the first angle member 5 and the lower surface 61 of the second angle member 6 is omitted. Therefore, the lower surface 61 of the second angle member 6 is joined in a state of being in direct contact with the upper surface 51 of the first angle member 5.
- the lower end 44 of the covering portion 43 is set to substantially the same level as the inclined surface 33 a of the bulging portion 33, that is, the upper end portion is set to substantially the same level as the inclined surface 33 a spreading toward the back side of the covering portion 43 If so, the rainwater guided to the inclined surface 33a of the bulging portion 33 strikes the back surface (inner surface) of the covering portion 43 and falls due to gravity, so that it is possible to prevent rainwater from entering more reliably.
- the length of the covering portion 43, the position of the bulging portion 33, and the amount of protrusion may be set to optimum values in consideration of various conditions.
- the bulging part 33 of this embodiment is effective not only in the intrusion prevention function of the rain water mentioned above but in the rigidity improvement of side wall panel 3A. That is, since the bulging portion 33 having a convex cross-sectional shape is formed in the vicinity of the joint portion of the side wall panel 3A connected to the roof panel 4, the panel rigidity is improved and it becomes difficult to be deformed. improves. Moreover, it is desirable to comprise the bulging part 33 mentioned above as a combination of the straight line which has a bending point rather than curved surfaces, such as circular arc, from a viewpoint of panel manufacture or drainage property. In addition, the bulging part 33 of illustration is formed in the cross-sectional shape of the substantially trapezoidal shape which has four bending points by combining three straight lines.
- the nacelle cover connection portion structure of the present embodiment can ensure high strength also for the panel connection portion between the side wall panel 3A and the roof panel 4, the function necessary as a panel constituting the nacelle cover 2 can be efficiently It can be satisfied at low cost.
- the packing between the upper surface 51 of the first angled member 5 and the lower surface 61 of the second angled member 6 is omitted, but this is not omitted.
- a packing may be provided between the upper surface 51 of the angle member 5 and the lower surface 61 of the second angle member 6.
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Abstract
Description
パネルの接続部は一般にボルトによって接合されるが、風圧、積雪等によってナセルカバーが外力を受ける時には、このボルトで接合されたパネルの接続部が強度面で最弱部となる。従って、パネルの接続部は、高い材料歪みが発生しないような構造を有する必要がある。
壁面パネルの接続部の一般的な構造としては、たとえば特許文献1に示す技術がある。
特に、ナセルカバーの屋根部を構成する屋根パネルについては、これを取り外せる構造にする必要がある。
さらに、風力発電装置のナセルカバーを構成するパネルの取り外しや再取り付けの作業は、高所・強風環境下で行われるが、特許文献1に示されている壁面パネルの接続部構造は、このような高所・強風環境下でのパネルの取り外し、再取り付けに対応した構造とはなっていない。
しかし、図8に示すような、単純なパネルの重ね継手方式では、上側パネル(屋根パネル)104を吊り下げながら下側パネル(側壁パネル)103の上端部に被せて据え付ける作業時において、下側パネル103の上端部と上側パネル104の下端部とが干渉することにより、下側パネル103の上端部及び上側パネル104を損傷させる可能性があって好ましくない。
しかし、ナセルカバーのパネルは一般に繊維強化プラスチック(FRP)などの合成材料で形成されており、パネル端部にフランジを設けると、パネルの成形コストが高くなってしまう。また、突出部となるフランジを設けることにより、パネルの輸送効率が悪くなるという問題も生じてくる。さらに、水密性の観点から、フランジ241、231間にパッキン207などを配設する必要がある。
また、ナセル内の機器のメンテナンス時において、上側パネルを取り外して再び取り付けても、パッキンによるシール性が損なわれることはない。さらに、上側パネルを位置決めする際には、上側パネルを動かしてもパッキンが脱落せず、第1の枠材及び第2の枠材に追随する。
また、ナセル内の機器のメンテナンス時において、上側パネルを取り外して再び取り付けても、上側パネルと下側パネルとの間の防水性が損なわれることはない。
さらに、下側パネルの上端部のうち、被覆部の下端と対向する部位は、被覆部の下端に向かって突出するように形成されているので、この突出形状により、下側パネルの上側パネルとの接続部近傍では剛性が向上し、パネル取扱い時の変形が少なくなって、ナセルカバーの組立作業は容易になる。
また、上側パネルを下側パネルに接続する際には、パネルの製品誤差を吸収することができる。
また、ナセルの後方から風が当たるときには、コーナー部に応力集中が生じるが、この部位に繊維強化プラスチック製の枠材を用いることにより、応力集中を緩和することができる。
以下に説明する各実施形態において、風力発電装置のナセルカバー接続部構造は、風力発電装置のナセルを覆うナセルカバー2に適用される。ナセルは、タワー上端部に設置され、風車翼を取り付けたロータと主軸を介して連結される増速機や発電機等の機器類を収納するものであり、ナセルカバー2はナセルの外壁を形成する部材である。
図4~6に示す断面図は、本発明の第一実施形態に係る風力発電装置のナセルカバー接続部構造である。
図3及び図4において、ナセルカバー2を構成する側壁パネル3の上端部31には、ナセルカバー2の内側となる面(ナセル内面側)に、長尺状の第1のアングル材(第1の枠材)5が固定されている。また、ナセルカバー2を構成する屋根パネル4の下端部41には、ナセルカバー2の内面側に、長尺状の第2のアングル材(第2の枠材)6が固定されている。
そして、第1のアングル材5の上面51と第2のアングル材6の下面61との間には、たとえば断面形状を略P字状にしたパッキン7が介装されている。
また、第2のアングル材6は、その下面61が屋根パネル4の下端部41の下端42よりも下方に位置するようにして、屋根パネル4に固定されている。
また、第2のアングル材6の下面61と、屋根パネル4の下端部41の下端42との間に生じる隙間や段差についても、ナセル内側への浸水を防止するため、シーリング材82によってシールされている。
すなわち、第1のアングル材5がナセル内側に突出する長さを、第2のアングル材6がナセル内側に突出する長さより長く設定し、第1のアングル材5及び第2のアングル材6との接合面は、ナセル内側の突出端縁となる側縁52,62間に生じる段差がシリコン等のシーリング材83によりシールされている。このシーリング材83は、パッキン7が破損した場合の浸水を防止するものである。
また、屋根パネル4を取り付けるための位置決めで屋根パネル4を動かした際にも、パッキン7が脱落することはなく、アングル材5、6に追随してシール機能を維持する。
上述したように、金属及び繊維強化プラスチックを使い分ける理由は、強度上の観点から鋼材等の金属素材が好ましいにもかかわらず、曲線に合わせた鋼製等の金属製アングル材は特注品となるためである。
特に、近年の風力発電装置は大型化が進み、ナセルが地上から100m程度の高所に設置されるケースも増加している。このため、ナセルの組立作業やナセル内機器類のメンテナンス作業等を高所で実施する機会も多くなるので、屋根パネル4の取り外しや再度の取り付け作業が、破損の原因となる互いの干渉を防止して容易に実施可能となることの意義は大きい。
次に、図7に基づいて、本発明の第二実施形態に係る風力発電装置のナセルカバー接続部構造を説明する。なお、上述した実施形態と同様の部分には同じ符号を付し、その詳細な説明は省略する。
さて、本実施形態のナセルカバー接続部構造は、第一実施形態のナセルカバー接続部構造と略同様に構成されているが、以下の点において異なる構成を有している。
また、第一実施形態においては、第1のアングル材5の上面51と第2のアングル材6の下面61との間には、断面形状がP字状のパッキン7が介装されていたが、本実施形態においては、第1のアングル材5の上面51と第2のアングル材6の下面61との間のパッキンは省略されている。従って、第2のアングル材6の下面61は、第1のアングル材5の上面51に対して直接接した状態で結合される。
なお、被覆部43の長さや膨出部33の位置及び突出量等については、諸条件を考慮して最適値に設定すればよい。
また、上述した膨出部33は、パネル製作上や水切り性の観点より、円弧等の曲面よりも屈曲点を有する直線の組み合わせで構成することが望ましい。なお、図示の膨出部33は、3本の直線を組み合わせることにより、4箇所の屈曲点を有する略台形状の断面形状に形成されている。
3,3A 側壁パネル(下側パネル)
4 屋根パネル(上側パネル)
5 第1のアングル材(枠材)
6 第2のアングル材(枠材)
7 パッキン
9 ポリテトラフルオロエチレンワッシャー
10 ボルト
31 上端部
32 上端
33 膨出部
41 下端部
42 下端
43 被覆部
44 下端
51 上面
61 下面
81,82,83 シーリング材
Claims (8)
- 風力発電装置のナセルを覆うナセルカバーの側壁の下部を構成する下側パネルと前記側壁の上部を構成する上側パネルとを接続するためのナセルカバー接続部構造であって、
前記下側パネルの上端部となる前記ナセルカバー内側の面に長尺状の第1の枠材が固定され、
前記上側パネルの下端部となる前記ナセルカバー内側の面に長尺状の第2の枠材が固定され、
前記第1の枠材の上面と前記第2の枠材の下面とが衝合されて互いに固定されることにより、前記下側パネルの上端部と前記上側パネルの下端部とが略同一面上で互いに接続され、
前記下側パネルの上端部と所定の間隔を隔てつつ前記下側パネルの上端部をナセル外側から覆う被覆部が設けられ、該被覆部が、前記上側パネルの下端部よりも前記ナセルカバー外側に突出するようにして前記上側パネルの下端部と一体的に形成され、かつ、
前記第1の枠材の上面と前記第2の枠材の下面との間にパッキンが介装されている、風力発電装置のナセルカバー接続部構造。 - 風力発電装置のナセルを覆うナセルカバーの側壁の下部を構成する下側パネルと前記側壁の上部を構成する上側パネルとを接続するためのナセルカバー接続部構造であって、
前記下側パネルの上端部となる前記ナセルカバー内側の面に長尺状の第1の枠材が固定され、
前記上側パネルの下端部となる前記ナセルカバー内側の面に長尺状の第2の枠材が固定され、
前記第1の枠材の上面と前記第2の枠材の下面とが衝合されて互いに固定されることにより、前記下側パネルの上端部と前記上側パネルの下端部とが略同一面上で互いに接続され、
前記下側パネルの上端部と所定の間隔を隔てつつ前記下側パネルの上端部をナセル外側から覆う被覆部が設けられ、該被覆部が、前記上側パネルの下端部よりも前記ナセルカバー外側に突出するようにして前記上側パネルの下端部と一体的に形成され、かつ、
前記下側パネルの上端部のうち、前記被覆部の下端と対向する部位は、前記被覆部の下端に向かって突出するように形成されている、風力発電装置のナセルカバー接続部構造。 - 前記第1の枠材の上面が前記下側パネルの上端部の上端よりも上方に位置するようにして、前記第1の枠材は前記下側パネルに固定されており、
前記第2の枠材の下面が前記上側パネルの下端部の下端よりも下方に位置するようにして、前記第2の枠材は前記上側パネルに固定されている請求項1または2に記載の風力発電装置のナセルカバー接続部構造。 - 前記第1の枠材の上面と前記下側パネルの上端部の上端との間に生じる段差が、シーリング材によってシールされ、
前記第2の枠材の下面と前記上側パネルの下端部の下端との間に生じる段差が、シーリング材によってシールされている請求項3に記載の風力発電装置のナセルカバー接続部構造。 - 前記第1の枠材がナセル内側に突出する長さを前記第2の枠材がナセル内側に突出する長さより長く設定し、前記第1の枠材及び前記第2の枠材は、ナセル内側の突出端縁間に生じる段差がシーリング材によってシールされている請求項1から4のいずれか一項に記載の風力発電装置のナセルカバー接続部構造。
- 前記第1の枠材は前記下側パネルの上端部に、前記第2の枠材は前記上側パネルの下端部に、それぞれポリテトラフルオロエチレンワッシャーを介してボルトで締結されている請求項1から5のいずれか一項に記載の風力発電装置のナセルカバー接続部構造。
- 前記ポリテトラフルオロエチレンワッシャーの径は前記ボルトの径以下である請求項6に記載の風力発電装置のナセルカバー接続部構造。
- 前記第1の枠材及び前記第2の枠材は、それらの長さ方向において直線状に延在する部位においては金属で形成され、それらの長さ方向において曲線状に延在する部位においては繊維強化プラスチックで形成されている請求項1または2に記載の風力発電装置のナセルカバー接続部構造。
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EP11838020.3A EP2636898A1 (en) | 2010-11-01 | 2011-11-01 | Structure for nacelle cover connection unit of wind power generation device |
CN201180051500.2A CN103270297B (zh) | 2010-11-01 | 2011-11-01 | 风力发电装置的机舱罩连接部结构 |
US13/881,564 US9677543B2 (en) | 2010-11-01 | 2011-11-01 | Structure for nacelle cover connection portion of wind turbine generator |
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- 2011-11-01 EP EP11838020.3A patent/EP2636898A1/en not_active Withdrawn
- 2011-11-01 JP JP2012541872A patent/JP5518207B2/ja not_active Expired - Fee Related
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Cited By (4)
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EP2942522A1 (en) | 2014-05-07 | 2015-11-11 | Mitsubishi Heavy Industries, Ltd. | Wind turbine power generating apparatus and nacelle assembly method for the same |
JP2015214889A (ja) * | 2014-05-07 | 2015-12-03 | 三菱重工業株式会社 | 風力発電装置及び風力発電装置用のナセルの組立方法 |
EP3002456A1 (en) | 2014-09-30 | 2016-04-06 | Hitachi, Ltd. | Wind power generator |
JP2016070176A (ja) * | 2014-09-30 | 2016-05-09 | 株式会社日立製作所 | 風力発電装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2012060370A1 (ja) | 2014-05-12 |
KR20130059451A (ko) | 2013-06-05 |
EP2636898A1 (en) | 2013-09-11 |
US20130259677A1 (en) | 2013-10-03 |
JP5518207B2 (ja) | 2014-06-11 |
CN103270297A (zh) | 2013-08-28 |
CN103270297B (zh) | 2015-11-25 |
US9677543B2 (en) | 2017-06-13 |
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