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Method and device for the dynamic measuring of the unbalance of a rotor

A technology of dynamic measurement and balance degree, which is applied in the direction of measuring device, static/dynamic balance test, engine components, etc., can solve the problems affecting the measurement of unbalance degree and vibration characteristics, and achieve simplified operation, accurate unbalance degree, Accurately Measured Effects

Active Publication Date: 2008-11-12
SCHENCK ROTEC GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Here, however, the housing section attached to the housing center section of the turbocharger also influences the vibration behavior and thus significantly influences the measurement of the unbalance.

Method used

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  • Method and device for the dynamic measuring of the unbalance of a rotor
  • Method and device for the dynamic measuring of the unbalance of a rotor

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Embodiment Construction

[0017] The unbalance measuring device shown in FIG. 1 comprises a housing 1 which can be fixed on a base or base frame by means of screws 2 . The housing 1 comprises a flow channel 3 and an annular helical casing 4 whose central bore 5 communicates with the flow channel 3 . On its end side opposite the flow channel 3, the helical housing 4 has a helical channel 4a and an annular surface 4b concentric with its longitudinal center axis. Four elastic flexible elements 6 with the same structure are fixed on the ring surface by means of screws, respectively at the same distance from the longitudinal central axis and arranged equidistantly from each other.

[0018] As can be seen from FIG. 2 , said elastically flexible element 6 is plate-shaped substantially in the shape of a sector of a ring. By digging holes in the plate, the elastic flexible element 6 is divided into a radially inner sector 7, a radially outer sector 8 and the two sectors are connected to each other The Z-shape...

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Abstract

A method for the dynamic measuring of the unbalance of a rotor arranged in a casing (1) and rotating at high angular velocity, wherein the rotor is mounted in a separate bearing housing (14), comprises the following steps: fastening the bearing housing (14) to the casing (1) with elastically flexible elements (6) in between in such a way that the bearing housing (14) can be moved relative to the casing (1) in at least two spatial directions and the rotor is arranged in a working position, suitable for the drive, in the casing (1), accelerating the rotor to an essentially normal working speed, measuring the vibrations, induced by unbalance, while the rotor rotates at an essentially normal working speed, determining the phase position of the induced vibrations relative to the angular position of the rotor at the measuring speeds at which the induced vibrations are measured,; using the measured induced vibrations and the phase position in order to determine the unbalance to be compensated.

Description

technical field [0001] The invention relates to a method for dynamically measuring the unbalance of a rotor arranged in a housing and supported in a separate bearing housing and rotating at high angular speed, and to a device suitable for carrying out the method . In particular, the invention relates to a method and a device for measuring the unbalance of a rotor of an exhaust gas turbocharger. Background technique [0002] During operation, the rotors of turbochargers driven by exhaust gases rotate at very high rotational speeds, often exceeding 100,000 revolutions per minute, and must therefore be balanced particularly precisely in order to avoid noise and high bearing loads. The rotor usually consists of a shaft supported in an associated bearing housing. The shaft supports the turbine on one end and a compressor wheel on the other. For reasons of measurement accuracy, the unbalance of the rotor is generally measured at an angular velocity which essentially corresponds...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/04G01M1/16
CPCF01D5/027G01M1/04F05D2220/40
Inventor 迪特尔·西伦
Owner SCHENCK ROTEC GMBH