摘要:
A method for the closed-loop speed control of an internal combustion engine-generator unit with a coupling, in which method, when the engagement of the coupling is detected, a change is made from a first set of parameters to a second set of parameters. In the second set of parameters, a second run-up ramp is set, which determines the presetting of the set speed, and second controller parameters are set as the determining factors for computing controller components of a speed controller.
摘要:
A corona shield for an electrical machine includes a non-woven fabric of fibers or a fabric of threads, wherein the fibers or threads contain electrically conductive inorganic material.
摘要:
A sealing device comprises a slide ring having a sliding surface and a counterring affixed to a shaft, the sliding surface of the slide ring sealingly contacting the counterring and capable of rotating relative to the counterring, the slide ring, on a side facing away from the sliding surface, being sealed relative to a retaining ring by a sealing element of elastomeric material, the retaining ring being biased by a compression spring away from a housing which has an essentially C-shaped cross-section open in the direction of the slide ring. The sealing element is constructed as a ring-shaped bellows and has an essentially N-shaped cross-section with a first radial segment and a second radial segment which are connected by an axial segment. The first radial segment sealingly contacts an end face of the slide ring facing away from the sliding surface, and the second radial segment sealingly contacts an inner segment of the housing.
摘要:
Magneto-inductive flow measurement using a pulsed and/or reversing pulsed constant field wherein the measurement voltage which is induced by the flow, running transversely with respect to the magnetic field, of the measurement medium in the measurement tube of the magneto-inductive flowmeter is sampled in each clock time interval when the coil current is applied, even if the magnetic field has not yet reached its steady-state. Empirically determined correction values are used to correct the samples to the situation when measurements are carried out with a steady-state magnetic field. Calibration measured values can be recorded in a steady-state magnetic field from time to time, in order to check and, if required, to correct the correction factors. The coil current can be switched at frequencies which alternate with one another in time, the number of periods of the mutually alternating period sequences being varied in an irregular manner.
摘要:
In a measurement system for a pressure gage which has a bourdon tube spring as well as a spring support, the bourdon tube spring is made of a metallic material and the spring support is made of a polymer plastic. The connection between the bourdon tube spring and the spring support is made by means of a metallic transition element which has a recess into which the fixed end of the bourdon tube spring is glued or soldered, and which has engagement means formed on it which are in form-fitting engagement with the spring support. The compound assembly comprising the transition element and the spring support combines the cost advantage of the fabrication of the spring support from plastic with the mechanical advantages and antileak advantages of a metal-to-metal connection for the connection of the bourdon tube spring to the spring support. The fabrication of the measurement system is carried out such that the compound assembly of the spring support and the transition element is produced first, before the connection with the bourdon tube spring is made in conventional manner.
摘要:
A device for transferring platforms movable on rollers from one conveyor onto another cross-over conveyor, the platforms being driven along the conveyors by motor driven friction wheels positioned along the conveyor so as to contact the outer surfaces of the platform. A pair of friction wheels are mounted on a rotatable swing lever of a rotatable friction wheel assembly so that the frictional wheels engage and drive the platform from one conveyor to the other.
摘要:
An arrangement for cleaning containers includes a spraying nozzle which is constructed as a pressure sprayer, and at least two jet tubes which are arranged at opposite sides of the spraying nozzle, extending substantially parallel to the axis of the latter. The spraying nozzle and the jet tubes are mounted on a common distributor body which, in turn is mounted on a base plate. The distributor body has a tubular configuration and carries at its end remote from the base plate a seat for a valve ball. The distributor body further includes an arrangement for conducting the cleaning water back along itself to the upstream ends of the jet tubes. As a result of this construction, the arrangement has a relatively low height, and yet it is suited for use in cleaning drinking containers of various shapes, such as tumblers and stemware. The valve ball is operated by a valve tappet or operating member which is guided in a tubular guiding wall extending upwardly beyond the distributor member. The valve tappet may either be provided with external grooves, or with an internal passage and radial openings communicating therewith, for the flow of the cleaning water therethrough from the valve seat of the ball valve to the spray openings of the spraying nozzle. The spraying nozzle sprays the cleaning water against the internal surface of the respective container, and the jet tubes against the external surface thereof.
摘要:
A flask for producing sand-cast parts. To make unpacking of the cast parts easier and to achieve closer measurement tolerances on the same, baffle plates are provided in at least one part of the conical outside, which baffle plates can be tilted out or opened and project in the tilted-in or closed position inside of the flask. These have during the casting process the function of reinforcing the sand portions. After tilting out gas can escape and can be removed.