摘要:
An adjusting device for rotor blades of a wind power plant is disclosed. An AC motor is provided for adjusting the angle setting of the rotor blades. An input serves for receiving an input alternating current. A frequency converter is provided for generating a second alternating current having a second frequency, wherein the second alternating current drives the AC motor. Additionally, a DC voltage source and an inverter are provided for converting the voltage provided by the DC voltage source into an alternating current for the AC motor. The inverter is thereby separated from the frequency inverter.
摘要:
A pneumatic brake servo for motor vehicles having a servo housing, the interior of which is divided into at least one working chamber and at least one vacuum chamber by at least one axially movable wall which can be loaded with a pneumatic differential pressure, having a control valve which controls the differential pressure and is arranged in a control housing for connecting the working chamber to the vacuum chamber or to atmosphere. The movable wall includes a diaphragm plate and a rolling diaphragm, and the working chamber is sealed by a sealing ring which bears against the control housing and which is clamped in the radial direction in relation to a longitudinal axis of the brake servo. An actively loaded area of the movable wall is reduced by division of the working chamber into a prechamber and a main chamber to avoid stick/slip effects and reduce disruptive noises.
摘要:
An orthopedic kit includes a hollow cannula having a distal end including spiral thread for engaging a bone, an elongated probe extending through the hollow cannula, and a metering device for moving the probe such that a distal end of the probe is moved away from a proximal end of the hollow cannula to into the bone to form a channel in the bone whereby the metering device measures a force applied by the distal end of the probe and thus the mechanical strengh of the bone. A cement injector also forms part of the kit which passes though the hollow canula beyond the distal end of the cannula into the channel to inject cement into the surrounding bone structure. A pedicle screw may also form part of the kit to be placed in the channel before the cement is cured.
摘要:
An adjusting device for rotor blades of a wind power plant is disclosed. An AC motor is provided for adjusting the angle setting of the rotor blades. An input serves for receiving an input alternating current. A frequency converter is provided for generating a second alternating current having a second frequency, wherein the second alternating current drives the AC motor. Additionally, a DC voltage source and an inverter are provided for converting the voltage provided by the DC voltage source into an alternating current for the AC motor. The inverter is thereby separated from the frequency inverter.
摘要:
A magneto-optical storage medium for the repeated writing of information at a write temperature T.sub.w, or at two write temperatures T.sub.h, T.sub.i, above the room temperature T.sub.a and for the repeated reading out at a temperature T.sub.m, with a front mask at the temperature T.sub.f and a rear mask at a temperature T.sub.r, above the room temperature T.sub.a, in an external magnetic field H.sub.e, which medium includes a substrate, a first magnetic layer which is disposed on the substrate and has a temperature-dependent coercivity H.sub.C1 (T), a compensation temperature T.sub.cp1 and a Curie temperature T.sub.C1, a second magnetic layer which is disposed on the first magnetic layer and has a temperature-dependent coercivity H.sub.C2 (T), a compensation temperature T.sub.cp2 and a Curie temperature T.sub.C2, and a third magnetic layer which is disposed on the second magnetic layer and has a temperature-dependent coercivity H.sub.C3 (T), a compensation temperature T.sub.cp3 and a Curie temperature T.sub.C3, where:T.sub.a H.sub.e for T
摘要:
The invention relates to a device for carrying out an individual immunoassay in a fully automatic manner in order to detect the presence of a biologically active substance in a sample, and to the use of one such device. The invention also relates to a sample strip which, in order to carry out an individual immunoassay for the detection of a biologically active substance in a sample using the above-mentioned device, comprises a plurality of cavities for providing the reagents required for the assay. The sample strip is sealed with a film carrying a code specific to the assay.
摘要:
An actuating drive for a rotor blade in a wind power installation is provided with an electric motor and a frequency converter which has a rectifier that is to be fed from a power supply system, a link connected to the rectifier, and a d.c.-to-a.c. inverter for feeding the motor, the link carrying a specified nominal operating voltage in a network-fed normal operation of the frequency converter. Furthermore, an auxiliary energy supply device is provided that is connected to the link. The auxiliary energy supply device includes and energy store which makes available a support voltage that amounts to less than 80% of the nominal operating voltage of the link. A diode is connected between the energy store and the link, and is arranged, with regard to its forward direction, in such a way that it feeds a support voltage from the energy store into the link if the link voltage falls below the support voltage. The diode prevents a current flow between the energy store and the link if the link voltage is greater than the support voltage. A charging device for the energy store has a lower charging voltage than the nominal operating voltage of the link.
摘要翻译:在风力发电设备中用于转子叶片的致动驱动器设置有电动机和变频器,该电动机和变频器具有将从电源系统馈送的整流器,连接到整流器的连接器和直流 - ac 用于馈送电机的变频器,在变频器的网络馈电正常运行中,链路承载指定的额定工作电压。 此外,提供了连接到链路的辅助能量供应装置。 辅助能量供应装置包括能量存储器,其提供的总和小于链路额定工作电压的80%的支持电压。 二极管连接在能量存储器和链路之间,并且相对于其向前方向被布置成使得如果链路电压低于支持电压,则将支持电压从能量存储器馈送到链路中。 如果链路电压大于支持电压,则二极管阻止能量存储器和链路之间的电流流动。 用于能量存储器的充电装置具有比链路的额定工作电压低的充电电压。
摘要:
A bone substitute which consists of a porous metallic or a biocompatible, open-cell material which is wholly or partly impregnated with a solution comprising factor XIII, or at least some of its pores are filled with a solution comprising factor XIII, is described.
摘要:
Organic and/or inorganic substances and water are thermally separated from contaminated materials, solid aggregates, the contaminated material is pretreated and is subsequently heated in a directly or indirectly heated furnace, which includes a rotary kiln, a fluidized bed furnace or a floating zone reactor, and during the heating the material is treated with recycled hot gases or recycled hot steam and with oxidizing agents. The exiting processing gases, which contain water vapor, are dedusted, and 80 to 90% by volume of the water vapor-containing processing gases are recycled to the furnace to act as entraining gas. The remaining water vapor-containing processing gases are condensed, the resulting liquid phase is withdrawn, and pollutants are removed from the withdrawn liquid phase by a wet chemical or physical processing.
摘要:
A pneumatic brake servo for motor vehicles having a servo housing, the interior of which is divided into at least one working chamber and at least one vacuum chamber by at least one axially movable wall which can be loaded with a pneumatic differential pressure, having a control valve which controls the differential pressure and is arranged in a control housing for connecting the working chamber to the vacuum chamber or to atmosphere. The movable wall includes a diaphragm plate and a rolling diaphragm, and the working chamber is sealed by a sealing ring which bears against the control housing and which is clamped in the radial direction in relation to a longitudinal axis of the brake servo. An actively loaded area of the movable wall is reduced by division of the working chamber into a prechamber and a main chamber to avoid stick/slip effects and reduce disruptive noises.