Mtu Aero Engines Gmbh

Mtu Aero Engines Ag

Other

Mtu Motoren-Und Turbinen-Union Muenchen, Gmbh

Michael Zielinski

Roland Huttner

Roland Hessert

Florian Gerbl

Gerhard Ziller

Rene Schneider

René Schneider

Andreas Zeisberger

Johann Eberl

Martin Stadlbauer

Ernst Trassl

Jürgen Gründmayer

A turbomachine stage, in particular a turbine stage or compressor stage of a gas turbine, is disclosed. The turbomachine stage has a, in particular conical, housing in which a rotor blade arrangement having a plurality of rotor blades is disposed which have an outer shroud having at least one radial sealing flange. The sealing flange has a recess arrangement having at least one radial recess in which a radial projection is disposed, in particular centrally. A sensor arrangement having at least one capacitive sensor for detecting a radial distance from a circumferential surface of the sealing flange is disposed on the housing.

Turbomachine stage and method for detecting a sealing gap of such a turbomachine stage

The invention relates to a turbomachine having a rotor () comprising rotor blades (), having a rotor housing () which surrounds at least sections of the rotor () or the rotor blade () so as to form a rotor gap (d), and having a gap-measuring system () which is coupled to a capacitive sensor device () having an electrode and a counterelectrode for determining measured capacitance values (C) which characterize the rotor gap (d), wherein the rotor () or the rotor blades () is/are connected as the electrode of the sensor device (), wherein at least part () of the rotor housing () is connected as the counterelectrode. The invention also relates to a gap-measuring system () and to a method for determining a rotor gap (d) between a rotor () comprising rotor blades () and a rotor housing () of a turbomachine, which rotor housing surrounds at least sections of the rotor () or the rotor blades ().

Turbomachine, gap-measuring system, and method for determining a rotor gap

An apparatus and method for non-contact blade vibration measurement is disclosed. The apparatus and method includes sensors which are arranged around the circumference of a rotor which is formed with rotor blades, a signal detection unit, and an evaluation unit. Devices are provided to determine the rotor position and/or the housing deformation. This avoids the technical problems of the prior art, and provides an improved apparatus and an improved method for non-contact blade vibration measurement. In particular, the attainment according to the invention eliminates the effect of rotor radial movements and housing deformations, i.e., oval deformations, on the measurement data, thereby ensuring high amplitude resolution for the vibration analysis under all conditions.

Apparatus and method for non-contacting blade oscillation measurement

A measurement system for detecting a rotary movement of a rotor that is situated in particular in rotatable fashion in a compressor housing of a jet engine, includes the rotor having vane elements that are preferably situated equidistant from one another on its periphery, and in addition at least one sensor being provided, and at least one material measure being fashioned on the rotor that can be periodically detected by the sensor due to the rotational movement, the material measure is formed by at least one modified vane element that is truncated in the area of the vane tip, the sensor outputting an identical measurement signal in each case when the vane elements travel past, and outputting a modified measurement signal when the modified vane element travels past.

Measuring arrangement for detecting a 1/rotary momentum of an engine rotor, and associated method

A device is described for determining the torque which is applied to a turbine shaft (), the determination device having at least one system for contactless measurement of the integral torsion of the turbine shaft () and a unit for contactless measurement of the restoring constant of the turbine shaft (). Furthermore, a method is described for determining the torque which is applied to the low-pressure turbine shaft () of a turbine engine, which is distinguished in that, to determine the torque, the integral torsion of the turbine shaft is measured by a contactless method and the restoring constant of the turbine shaft is measured.

Device and method for determining torques on a turbine shaft

In a method for generating time markers of arbitrary points on moving components and an optical trigger device for performing the method, light from a broadband light source with a correspondingly short coherence length is split into two paths, namely a measurement light path and a reference light path, and is coupled into two optical waveguides, the light of the reference light path is at least partially coupled back and the light of the measurement light path is focused at a measurement point and reflected by the component passing through the focus, wherein the light distances in the measurement light path up to the focus and in the reference light path up to the coupling-back plane are of the same length within the coherence length of the radiated light, wherein the coupled-back light from the reference light path and the measurement light path is brought to interference and detected by a detector, and wherein a short modulation event occurs at the detector when the component passes through the focus.

Method for producing time marks at any points on moving components

A method and an electrical circuit for converting highly structured analog signals arriving with variable pulse frequency into trigger pulses with an electronic circuit that locks the trigger pulses for a specific time, which is referred to as a dead time. The dead time being adapted to the current pulse frequency of the analog signals.

Method and electrical circuit for regulating dead time given varying pulse repetition rates

A signal device for turbo-engines which, by way of moving blades arranged on a rotor, when passing through a defined circumferential position of the housing, generates signals which are precise with respect to time. The device includes a probe which has fiber optical waveguides for emitting and receiving light. An illuminating beam is emitted which is focussed in the direction of the rotor. The probe is arranged on the housing at a distance with respect to free end faces of the moving blades. The probe emits the illuminating beam with an elliptical cross-section, through which the moving blades travel, in such a manner that, on each corresponding free end face, an elliptical illumination spot is imaged whose large axis is aligned essentially in parallel to the delivery-side or suction-side edges of the free end faces. The signals are generated from the light reflected by the free end faces.

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Unterschleissheim, Germany

Michael Zielinski