Lifting yoke and method; the lifting yoke configured for connecting to, and lifting, a wind turbine blade transport frame, said yoke being generally rectangular and comprising four corner posts connected by struts; each corner post being configured for internally receiving therein an upwardly oriented locating finger atop a said transport frame shoulder; said corner post having a housing enclosing an internal space and extending between a lower foot face and a top; said corner post having, at said lower foot face, an aperture dimensioned to receive a said locating finger into said internal space; said corner post further comprising guide surfaces enclosed within said housing and spaced apart to define a locking space and configured to snugly receive a said locating finger; each guide surface comprising a locking aperture; wherein a movable locking element is configured to engage both said locking apertures to thereby bridge said locking space; said locking element being configured to engage a lifting point at said locating finger; said movable locking element constituting the primary lifting element of said lifting yoke.

The invention relates to a rotor blade of a wind power plant having two rotor blade half-shells (1, 21) with in each case a leading-edge periphery and a trailing-edge periphery (8a, 22a), which rotor blade half-shells are adhesively fastened to each other along the leading-edge and trailing-edge peripheries (8a, 22) and which in case have a trailing-edge girder (3, 25), and each of the trailing-edge girders (3, 25) at least in certain sections is of rectangular design in a cross section along its longitudinal extent.

The wind turbine array includes a plurality of wind turbines, a supporting frame, and a bollard. The plurality of wind turbines mount in the supporting frame. The bollard: 1) raises the supporting frame above a supporting surface; 2) transfers the load path of the supporting frame and the plurality of wind turbines to the supporting surface; and, 3) adjusts the azimuth of the supporting frame to optimize the orientation of the plurality of turbines relative to the direction of the wind. The plurality of wind turbines use the wind to generate electricity that is subsequently fed into an electric load.

A tidal current energy generating device includes an outer frame (1), at least one inner frame (2), at least two hydro turbines (3), at least one center shaft (4), at least one generator (5), and at least three bearings (6). The at least one inner frame (2) is separably disposed in the outer frame (1). At least two hydro turbines (3) are located below a water surface and are disposed in one inner frame (2). At least two hydro turbines (3) are disposed coaxially and are vertical-axis hydro turbines. At least one center shaft (4) is disposed through the at least two hydro turbines (3), the axis direction of the center shaft is perpendicular to the horizontal plane, and the center shaft (4) rotates along with the rotating of the hydro turbines (3). The at least one generator (5) is located above the water surface and connected with one end of the center shaft (4). The at least three bearings are sleeved on the center shaft (4) and are located on two sides of and between the two hydro turbines (3), respectively. The tidal current energy generating device can be modularly assembled and replaced above the water surface and can extend along the water depth direction, thereby improving the power generating efficiency.

A multi-piece fluid end that can be produced with fewer raw materials and at a lower cost. In one embodiment, a fluid end is formed from a first body attached to a separate second body. Their respective external surfaces may be engaged flushly, partially, or via one or more spacer elements. In some embodiments, the body pieces are flangeless to reduce stress on the fluid end. The second body may have a plurality of bores that are alignable with a plurality of corresponding bores formed in the first body. The second body may be connected to a power end using a plurality of stay rods. In other implementations, more than two body pieces may be utilized.

Some embodiments relate to a rotor blade of a wind turbine, a wind turbine having a rotor blade and a method for optimizing a rotor blade. Some embodiments relate to a rotor blade of a wind turbine, wherein the rotor blade has a leading edge, a trailing edge, a suction side and a pressure side, and extends in a longitudinal direction of a rotor blade between a root end and a tip end, wherein a direct connection between the leading edge and the trailing edge is termed the chord line and the length thereof is termed the chord length, wherein the rotor blade has at least one airfoil element, wherein the at least one airfoil element is arranged at the trailing edge with a proximal portion adjoining a trailing edge region and projects from the trailing edge with a distal portion having a projecting direction, which is oriented substantially parallel to the direction of the chord length, wherein the at least one airfoil element has an airfoil element thickness in a direction perpendicular to the projecting direction, wherein the at least one airfoil element has a pressure side airfoil side facing the pressure side and a suction side airfoil side facing the suction side, wherein the at least one airfoil element has a cross-section substantially orthogonal to the projecting direction, characterized in that the cross-section of the at least one airfoil element has at least one local minimum of the airfoil element thickness, wherein the airfoil element thickness in the cross-section on both sides of the local minimum has a larger value.

Lifting yoke and method; the lifting yoke configured for connecting to, and lifting, a wind turbine blade transport frame, said yoke being generally rectangular and comprising four corner posts connected by struts; each corner post being configured for internally receiving therein an upwardly oriented locating fmger atop a said transport frame shoulder; said corner post having a housing enclosing an internal space and extending between a lower foot face and a top; said corner post having, at said lower foot face, an aperture dimensioned to receive a said locating fmger into said internal space; said corner post further comprising guide surfaces enclosed within said housing and spaced apart to define a locking space and configured to snugly receive a said locating finger; each guide surface comprising a locking aperture; wherein a movable locking element is configured to engage both said locking apertures to thereby bridge said locking space; said locking element being configured to engage a lifting point at said locating finger; said movable locking element constituting the primary lifting element of said lifting yoke.

The invention relates to a turbine system for fuel saving in a vehicle, wherein the turbine system comprises a turbine and a turbine mount with a windshield, wherein the windshield and the wind turbine have a cross-sectional area, which is at least 60%, preferably at least 80% and more preferably 90% of the frontal projection area of the vehicle and the wind turbine by means of the turbine mount can be attached or is mounted on the front of the vehicle and/or on a chassis in front of the vehicle front.

A sandwich core material for a sandwich laminate is disclosed. The sandwich core material includes a number of flexible core material elements having a longitudinal structure. A flexible core material for a sandwich core material, a sandwich laminate and a wind turbine blade including such a sandwich core material are provided. In addition, the present a method of manufacturing such a sandwich core material is provided.

A fluid connection for a hydromotive machine or fluid-control valve having a first duct and a second duct. The first duct includes a mid-portion between a first end of the first duct and a second end of the first duct that has a non-circular cross-section. A second end of the first duct is wholly within the second end of the second duct. A first end of the second duct is wholly outside of the first duct.