Abstract: There is provided a drive train for transmitting a variable power with a variable input speed at a drive shaft and a substantially constant output speed at an output shaft for a power generation installation, driven by a continuous-flow machine. The drive train includes a power-split transmission having a first planetary gear as a superposition gear and a second planetary gear, and a hydrodynamic component which takes up power from an output side and returns said power in a controlled manner to the power-split transmission. The first and second planetary gears are coupled to each other via a common planet carrier. The drive shaft is coupled to a ring gear of the first planetary gear, and wherein in the common planet carrier, planets of the first planetary gear and planets of the second planetary gear are accommodated in an alternating fashion in a circumferential direction.

Abstract: The invention relates to a radial bearing, comprising a housing, a housing bore extending along a bearing axis, several tilting segments that are arranged around the bearing axis in order to support a shaft and each have a radially outer bearing surface, by means of which the tilting segments are supported on a supporting surface on the housing. The radially outer bearing surface of each tilting segment and the supporting surface are arranged facing each other. Each tilting segment is movably arranged relative to the housing.

Abstract: A press jacket for a press roller, in particular for a press roller of a shoe press for dewatering a fibrous material web, in particular a paper, cardboard, tissue or pulp web, or a transport band, in particular for a machine for producing or treating a fibrous material web, in particular a paper, cardboard or tissue machine, includes at least one layer containing polyurethane which contains a polyurethane matrix with a mixture of at least two prepolymers. Each prepolymer is a reaction product of two different polyols with a polyisocyanate.

Abstract: A clothing fabric for a paper machine has two or more endless strips, which are each formed by a film-like web spliced along a joint to form a film-like web that is endless in the direction of circulation of the fabric. The endless strips are connected to one another at the side edges with the joints of two endless strips that are connected to each other are arranged to be offset in relation to one another with respect to the direction of circulation of the fabric.

Abstract: There is provided a flow power plant including at least one turbine and a hub with at least one rotor blade, where a plurality of tie rods for applying a pretensioning force are arranged inside or outside of the at least one rotor blade in the region of a connection of the at least one rotor blade to the hub.

Abstract: A machine for producing and/or processing a fiber web, in particular a tissue web, includes a press roll and a mating roll which forms a nip with the press roll and the circumferential surface of which has a contour running in the cross-machine direction which, during operation of the machine, changes as compared with when the machine is at a standstill. The press roll has a roll core and a roll cover surrounding the roll core. Multiple pressure and/or temperature sensors are disposed in the roll cover and/or between the roll core and the roll cover. The pressure and/or temperature sensors are spaced apart differently far from one another in the cross-machine direction of the press roll, at least in some areas.

Abstract: The invention relates to a hydraulic drive device, comprising a piston which is guided displaceably in a cylinder chamber along a working axis and adjoins a working pressure chamber that can be pressurized by hydraulic fluid, and comprising a control means that is guided in the piston at least in some sections between different control states in order to control the flow of the hydraulic fluid from a high pressure supply into the working pressure chamber to move the piston in the working direction and from the working pressure chamber to a return flow chamber, wherein the region of the piston facing away from the working pressure chamber delimits a low pressure chamber that is pressurized by a low pressure supply for hydraulic fluid during the operation of the device such that the piston is moved back against the working direction when the control means connects the working pressure chamber to the return flow chamber. The invention furthermore relates to a method for operating a hydraulic drive device.

Abstract: A device for producing plastic spirals for use in a machine for producing a fibrous web includes at least two rolls between which an adjustable roll nip is formed. The rolls have a shape which differs in at least one region from a cylinder shape and/or have a surface structure in at least one region on the surface thereof.

Abstract: The invention relates to an impeller for a Kaplan turbine, comprising the following features or components: a shaft, a plurality of blades; a hollow hub which is located on the free end of the shaft and which carries the blades; an adjustment device for rotating the blades around axes of rotation perpendicular to the axis of rotation of the shaft. The invention is characterized by the following features: the interior of the hub is connected to a source of compressed air; branch lines are provided inside the hub to supply the compressed air to bearings or other lubrication points for the adjustment device.

Abstract: A method regulating the formation of a fibrous web, such as a paper, cardboard, or tissue web, in which method the formation of the fibrous web is measured online as a controlled variable and is held at a predefinable setpoint level via automatic formation regulation. In addition to the formation, the charge concentration of the suspension is measured as a controlled variable and is taken into consideration during the formation regulation.

Abstract: A device and corresponding method for producing three-dimensional components from impregnated fiber tapes. The device includes a plurality of grippers, arranged alongside one another, for gripping fiber tapes impregnated with matrix material, the grippers can be displaced in a linear manner on mutually parallel paths between a pick-up position and a maximum position such that the fiber tapes can be tensioned between the grippers and respectively associated transfer devices; a rotatable table on which the fiber tapes can be laid in a first and at least one additional layer; a severing device which can sever the fiber tapes close to the transfer device; a heating device for heating the layers to 160° C. to 400° C.; a first molding tool and one or more additional molding tools which can be moved together to three-dimensionally form the layers; and a transporting device which can transport the heated layers between the molding tools.

Abstract: A press belt for a shoe-press device for dewatering or smoothing a fibrous web, in particular a paper, cardboard, or tissue web. The press belt has a fiber-reinforced plastic matrix. On account of the fiber-reinforced plastic matrix containing at least in a partial region at least one polyurethane material and polydimethyl siloxane and silicon dioxide microparticles as additives, resistance to abrasion, the tendency toward developing fissures and toward fissure growth and/or resistance in relation to media present in a paper-making machine can be improved.

Abstract: The invention relates to a blade (1.1) for a water turbine, comprising the following features or components: •—a body made of sheet steel or cast steel, said body having mutually opposite outer surfaces that are in contact with the water during operation; •—at least one relief notch (5) which is located in a peripheral region of the blade (1.1) and extends through mutually opposite regions of the outer surfaces; •—a curable filling compound (6) which fills the cavity in the notch (5). The invention is characterized by the following features: •—retaining bodies (10) are fixed to the notch surface (5.1), said retaining bodies (10) being embedded in the filling compound (6) in the mounted state; •—the retaining bodies (10) have protrusions which prevent the filling compound (6) from falling out by way of a tight fit when the filling compound has cured.

Abstract: A paper machine clothing (PMC) fabric includes a plurality of monofilament yarns, at least some of the monofilament yarns having a composition formed of polyethylene terephthalate (PET). The PET monofilament yarns have an abrasion resistance of greater than 6,000 cycles.

Abstract: A switching or proportional valve has a valve drive, a valve body actuated by the valve drive, and at least one valve seat that, together with the valve body, delimits a flow cross-section for a flow medium conducted through the valve, wherein the flow cross-section is variable depending on the position of the valve body relative to the valve seat. The valve drive may be a rotary drive having a rotatable actuator, the actuator being coupled to the valve body in such a manner that the position of the valve body relative to the valve seat changes depending on the rotary position of the actuator. An eccentric element is rotationally related with the actuator. A spring-actuated return device with a plunger pressed by a spring against the eccentric element acts to return the eccentric element and the actuator to a starting position.

Abstract: The invention relates to an electric generator, comprising a rotor; a stator enclosing the rotor; a housing; a water-operated cooling device, comprising a water inlet and a water outlet and channels in the rotor and stator for guiding cooling water through the same; the housing is enclosed; the water-operated cooling device is the only cooling device of the generator.

Abstract: A shaking unit for the generation of one-dimensional oscillating movements of a machine part mass is provided having a coupling part for mechanical coupling to the machine part mass, a counter-mass which is coupled resiliently to the coupler part and, via the latter, to the machine part mass, and a drive system which acts in a sprung manner between the coupler part and the counter-mass. The coupling part may surround the counter-mass as a frame. At least one of two pneumatic springs of the drive system, which are arranged on both sides of the counter-mass, is loaded with a minimum and/or with a maximum load pressure of the pneumatic springs depending on an oscillation state.

Abstract: A method for producing a plain bearing including at least one plain bearing segment for forming a first plain bearing shell, at least one running element of a second plain bearing shell which forms a counter-bearing surface to the at least one plain bearing segment, with a sliding surface of the at least one running element having a higher hardness than a sliding surface of the at least one plain bearing segment, a carrying body for the at least one running element, an intermediate layer which is arranged between the at least one running element and the carrying body, a plastic deformability of which can be set by a temperature guidance. The method includes heating the intermediate layer, adjusting the running element, and reducing the plastic deformability of the intermediate layer by the temperature guidance.

Abstract: The invention concerns a Wells turbine, comprising a hub with a plurality of rotor blades having a drop-shaped profile orienting from a profile nose; the rotor blades are attached to the hub in a rotary fashion by means of a foot part such that the rotor blade angle is variable with respect to the plane of rotation, wherein the associated rotational axis intersects the chord for each profile section in a threading point, which is located in a region between the profile nose and the aerodynamic center of the profile; the adjustment of the blade angle is made passively by the equilibrium occurring during the operation of the wells turbine between the aerodynamic torque, acting on the rotor blades, and the centrifugal torque, wherein the average density of the rotor blade is selected to be less than 2700 kg/m3 and/or the mass distribution within the profile is selected such that the surface centrifugal torque of the rotor blade is reduced relative to a profile made from a solid and/or the surface centrifugal to

Abstract: The invention relates to a device for dewatering a fibrous web with a press zone which is formed by a mating element with a curved surface and a permeable press belt which wraps at least partially around the curved surface and has a running side and a contact side contacting a second side of the fibrous web. A permeable carrier belt arranged between the mating element and the fibrous web guides the fibrous web through the press zone. The device is configured so a fluid can flow through the press belt, the fibrous web, and the permeable carrier belt at least in a part region of the press zone. The permeable press belt is configured to generate a pressing pressure in the press zone when a tensile stress of at least 20 kN/m is applied and the contact side is adapted to a quality of the fibrous web produced.