摘要:
A scroll type fluid displacement apparatus is disclosed which includes a pair of scrolls each having a circular end plate and a spiral element extending from one end surface of the circular end plate. The pair of scrolls are maintained at an angular and radial offset so that both spiral elements interfit to form a plurality of line contacts between their spiral curved surfaces to thereby seal off and define at least one pair of fluid pockets. The fluid pockets are moved by relative orbital motion of the pair of scrolls. At least one of the circular end plates is provided with an anti-wear plate covering the end surface thereof in the area on which an axial end surface of the opposing spiral element slidably contacts. The circular end plate has a depressed portion at the center portion thereof to define an axial clearance between the anti-wear plate and the central portion of the end plate. Therefore, changes in the axial length of the spiral element due to temperature changes is absorbed by the deformation of the anti-wear plate into the depressed portion.
摘要:
A tool for making a scroll for use in a scroll type fluid displacement apparatus is disclosed. The tool includes first and second molding members and an insertion member. The first molding element has an end plate and two involute wall elements extending from one side surface of the end plate to define two involute grooves, one wedge-shaped and the other rectangular in axial cross-section. A wedge-shaped insertion member is removably disposed in the wedge-shaped involute groove. The second molding member has an indentation in its axial end surface which defines an end plate of a scroll to be formed.
摘要:
A wind turbine blade includes a lengthwise portion that extends between a root region and a tip region of the wind turbine blade. The lengthwise portion includes a cross section in which a first region surrounds a second region. The densities of the first and second regions vary with the first density being greater than the second density. The lengthwise portion includes a surface layer that bounds the first region, forms an exterior surface, and is configured to resist environmental degradation. At least one structural element extends longitudinally through the first region and is configured to reinforce the blade during use of the wind turbine. The lengthwise portion of a wind turbine blade may be made through an additive manufacturing process by depositing a main body in a plurality of layers. Each layer may be deposited in a plane generally parallel to a longitudinal axis of the lengthwise portion.
摘要:
A method of manufacturing a wind turbine blade shell part is described. Fibre mats and a root end insert are laid up in a mould part in a layup procedure by use of an automated layup system. The fibre mats are laid up by use of a buffer so that the fibre mats may continuously be laid up on the mould surface, also during a cutting procedure. The root end insert is prepared in advance and mounted on a mounting plate. The root end insert is lowered onto the mould by use of the mounting plate and a lowering mechanism. After the wind turbine blade shell has been moulded, the mounting plate is removed.
摘要:
A wind turbine blade includes a lengthwise portion that extends between a root region and a tip region of the wind turbine blade. The lengthwise portion includes a cross section in which a first region surrounds a second region. The densities of the first and second regions vary with the first density being greater than the second density. The lengthwise portion includes a surface layer that bounds the first region, forms an exterior surface, and is configured to resist environmental degradation. At least one structural element extends longitudinally through the first region and is configured to reinforce the blade during use of the wind turbine. The lengthwise portion of a wind turbine blade may be made through an additive manufacturing process by depositing a main body in a plurality of layers. Each layer may be deposited in a plane generally parallel to a longitudinal axis of the lengthwise portion.
摘要:
The present disclosure is directed to spar caps for wind turbine rotor blades and methods of manufacturing same. The spar cap includes a plurality of plies having varying lengths that are arranged in a tapered configuration. Further, the tapered configuration includes at least an upper portion and a lower portion. The upper portion is configured for attachment to at least one of a pressure side or a suction side of the rotor blade. Further, one or more plies of the upper and lower portions tapers towards an intermediate ply configured between the upper and lower portions of the spar cap. In addition, the intermediate ply has a length that is shorter than the plies in the upper and lower portions.
摘要:
A component for a wind turbine blade is described having a reinforced through-going aperture. The reinforcement can be provide by way of a fibre rope arranged around the periphery of the aperture, or as fibre material arranged in a radially-extending arrangement from the aperture.
摘要:
A wind turbine rotor blade is assembled from a first and a second rotor blade half shell made of a fiber-reinforced plastics material. An electrical heating arrangement includes a first heating element connected to the first rotor blade half shell and having a blade root end and a blade tip end and a second heating element connected to the second rotor blade half shell also having a blade root end and a blade tip end. The heating arrangement also includes a third heating element connected to the rotor blade half shells and having a blade root end and a blade tip end. The blade tip ends of the first, second and third heating elements are mutually electrically connected. The blade root ends of the first, second and third heating elements are connected to respective electrical connecting lines.
摘要:
A method of manufacturing a wind turbine blade shell part is described. Fibre mats and a root end insert are laid up in a mould part in a layup procedure by use of an automated layup system. The fibre mats are laid up by use of a buffer so that the fibre mats may continuously be laid up on the mould surface, also during a cutting procedure. The root end insert is prepared in advance and mounted on a mounting plate. The root end insert is lowered onto the mould by use of the mounting plate and a lowering mechanism. After the wind turbine blade shell has been moulded, the mounting plate is removed.
摘要:
A method of fabricating a thermoplastic component using inductive heating is described. The method includes positioning a plurality of induction heating coils to define a process area for the thermoplastic component, wherein the plurality of induction heating coils comprises a first set of coils and a second set of coils. The method also includes controlling a supply of electricity provided to the plurality of inductive heating coils to intermittently activate the coils. The intermittent activation is configured to facilitate prevention of electromagnetic interference between adjacent coils.