Abstract: A turbomachine having a rotor is provided, wherein the rotor comprises a central holding element and rotor elements which are arranged thereon, is intended to permit faster start-up without reducing the lifetime of the rotor, while permitting better predictions relating to the remaining lifetime of the rotor. To this end, a contact element is arranged in a region of the rotor between the holding element and the rotor element, wherein the contact element comprises a temperature measurement device.

Abstract: A method for determining oscillations of a rotating blade disc of a turbomachine is provided. The method utilizes the steps including, arranging a substance that emits a light quanta when excited by an external excitation source to emit the light quanta, exciting the light emitting substance by the external excitation source to emit the light quanta, sensing the emitted light quanta by a light sensor, and evaluating a signal from the sensor tot determine the osciallation behavior of the blade disc. A corresponding apparatus is also provided.

Abstract: Said method and corresponding device operate on a rotor, on which a substance, emitting quanta of light, is arranged at least one point, a radiation source, by means of which radiation my be emitted onto the rotating vane and the substance arranged thereon, a sensor, by means of which the light quanta emitted by the substance may be detected and an analytical circuit, by means of which the signal from the sensor may be analyzed to determine the vibrational behavior of the vane.

Abstract: The invention relates to a steam turbine (3) comprising an optical measuring system (60) for measuring a moving blade vibration. A transmitter (55) produces a light beam (61) which strikes the moving blades (27, 29, 31, 33) and is reflected by these into a receiver (57). By providing that the transmitter (55) is separated from the receiver (56), the invention achieves a measuring angle that actually reduces the scattered light effect of the steam enough to enable reliable optical measurements of the blades vibration. The invention also relates to a method for measuring the vibration of a moving blade (33) in a flow channel (19, 21, 23, 25) of a steam turbine (3).

Abstract: Steam turbine and method of measuring the vibration of a moving blade in a flow passage of a steam turbine The invention relates to a steam turbine (3) having an optical measuring system (60) for measuring a vibration of a moving blade. A transmitter (55) produces a light beam (61) which strikes the moving blade (27, 29, 31, 33) and, reflected from the latter, reaches a receiver (57). By separating the transmitter (55) from the receiver (57), a measuring angle is obtained which reduces the scattered-light effect of steam to such an extent that a reliable optical measurement of the blade vibration surprisingly becomes possible. The invention also relates to a method of measuring the vibration of a moving blade (33) in a flow passage (19, 21, 23, 25) of a steam turbine (3).