Method of manufacturing a wind turbine blade having predesigned segment
A technology for wind turbines and blades, which is applied in the field of manufacturing wind turbine blades with pre-designed segments, which can solve the problems of no flow guide device on the blade profile, and achieve the effects of reduced production costs, simple shape, and simple mold parts
Active Publication Date: 2015-03-11
LM GLASSFIBER
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
The profile of the blade is not provided with a guide device
Method used
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[0158] figure 1 A conventional modern upwind wind turbine according to the so-called "Danish concept" is illustrated, having a tower 4, a nacelle 6 and a rotor with a substantially horizontal rotor shaft. The rotor comprises a hub 8 and three blades 10 extending radially from the hub 8 , each blade having a blade root 16 closest to the hub and a blade tip 14 furthest from the hub 8 . The rotor has a radius indicated by R.
[0159] figure 2 A schematic view of a first embodiment of a wind turbine blade 10 according to the invention is shown. Wind turbine blade 10 has the shape of a conventional wind turbine blade and includes a root region 30 closest to the hub, a profile or airfoil region 34 furthest from the hub, and a transition region 32 between root region 30 and airfoil region 34 . The blade 10 comprises a leading edge 18 facing the direction of rotation of the blade 10 when the blade is mounted on the hub, and a trailing edge 20 facing in the opposite direction from ...
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Abstract
A method of manufacturing a wind turbine blade by using the design of a longitudinal segment of a first wind turbine blade for the design of a second wind turbine blade is described. The first wind turbine blade and the second wind turbine blade each comprise a longitudinally extending base part having a profiled contour comprising a pressure side and a suction side as well as a leading edge and a trailing edge with a chord extending between the leading edge and the trailing edge, the profiled contour generating a lift when being impacted by an incident airflow, the profiled contour in the radial direction being divided into a root region with a substantially circular or elliptical profile closest to the hub, an airfoil region with a lift generating profile furthest away from the hub, and preferably a transition region between the root region and the airfoil region, the transition region having a profile gradually changing in the radial direction from the circular or elliptical profile of the root region to the lift generating profile of the airfoil region. The method comprises the steps of a) taking a first blade design of a first base part of a first longitudinal section of the airfoil region of a first blade, b) using the first blade design for the first base part on a first longitudinal section of the airfoil region of a second blade, so that an induction factor of the first base part on the second blade without flow altering devices at a rotor design point deviates from a target induction factor, and c) providing the first longitudinal section of the second blade with first flow altering devices so as to adjust the aerodynamic properties of the first longitudinal segment to substantially meet the target induction factor at the design point on the second blade. The first longitudinal segment extends along at least 20% of a longitudinal extent of the airfoil region of the second blade.
Description
technical field [0001] The present invention relates to a method of manufacturing a wind turbine blade using the design of a longitudinal segment of a first wind turbine blade for the design of a second wind turbine blade, wherein both the first wind turbine blade and the second wind turbine blade comprise a longitudinal segment an extended base portion having a profiled contour including a pressure side and a suction side and a leading edge and a trailing edge with a chord at the leading edge and the trailing edge Extending between, the profile profile will generate lift when impacted by the incident air flow, the profile profile is divided in the radial direction into the root area closest to the hub, the airfoil area farthest from the hub and A preferred transition region between the root region having a substantially circular or oval profile and the airfoil region having a lift-generating profile , the transition region has a gradually changing profile in radial direction...
Claims
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IPC IPC(8): F03D1/06
CPCF03D1/0675F05B2240/32Y10T29/49336F03D1/0641F05B2240/301Y02E10/721F05B2240/305F05B2240/3062Y02E10/72Y02P70/50
Inventor P.富格尔桑格S.博夫L.富格尔桑格
Owner LM GLASSFIBER