Vibration reduction in an exhaust gas turbo-supercharger

A technology of exhaust gas turbine and supercharger, which is applied in the direction of gas turbine devices, machines/engines, blade support components, etc. It can solve the problems of affecting the speed range, increasing the material load of noise generation structure collapse, reducing efficiency, etc., to achieve improvement Effects of thermodynamic parameters, avoiding resonance, improving efficiency

Inactive Publication Date: 2014-05-07
MAN ENERGY SOLUTIONS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This vibration excitation affects the usable speed range, reduces efficiency and, increases noise generation and material loading at resonance which can lead to structural collapse

Method used

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  • Vibration reduction in an exhaust gas turbo-supercharger
  • Vibration reduction in an exhaust gas turbo-supercharger

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0030] figure 1 The figure shows a radial compressor according to the invention of an exhaust gas turbocharger for a marine diesel engine in section in a perspective view.

[0031] The impeller hub or rotor hub 2 is accommodated in the housing 1 in such a way that a flow channel for the combustion air for the marine diesel engine is defined between them. Arranged in this flow channel are the rotor blades 3 for acceleration and deflection of the air, which rotate together with the rotor hub 2 at a rotational speed n around the longitudinal axis of the compressor and supply the air to the rear guide arranged downstream. Guide vanes 4, in the rear guide, the kinetic energy of the air is partially converted into pressure energy.

[0032] Turbulences in the form of pressure and velocity fluctuations are induced in the air flow by the guide vanes 4 , which act on the rotor blades 3 . Since the rotor blades are thin-walled and thus have a low bending stiffness, the rotor blades are...

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Abstract

PURPOSE: Vibration reduction in an exhaust gas turbo-supercharger is provided to remove the vibration of rotary blades resulting from guide blades by creating a disturbance overlapping the fluid flux. CONSTITUTION: Vibration reduction in an exhaust gas turbo-supercharger comprises a housing(1), a rotary wheel hub(2), a plurality of rotary blades(3), a guide apparatus, and a disturbance generator. The housing defines a flow channel of fluid in a turbo machine. The rotary wheel hub is accommodated in the housing. The rotary blades convert the direction of the fluid. The guide apparatus comprises guide blades(4) switching the fluid flux. The disturbance generator induces a disturbance in the fluid flux in order to reduce the vibration generated by the guide blades with overlapping.

Description

technical field [0001] The invention relates to a fluid machine (Stroemungsmaschine) for an exhaust gas turbocharger according to the preamble of claim 1, an exhaust gas turbine with such a fluid machine, in particular for a self-ignition internal combustion engine A supercharger, and a method for damping vibrations in such an exhaust gas turbocharger. Background technique [0002] An exhaust gas turbocharger for an internal combustion engine always includes two fluid machines: a compressor (Verdichter) for the compression of the combustion air (Verbrennungsluft) for the internal combustion engine, and a turbine (Turbine) for driving the compressor. Especially in exhaust gas turbochargers for high-power self-igniting internal combustion engines (e.g. marine diesel engines), the compressors and turbines are exposed to high mechanical and thermodynamic loads by the fluid (i.e. combustion air or exhaust gases) flowing through them . On the other hand, today's efforts are made...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D25/06F01D5/26F02C6/12F02B37/00
CPCF02C6/12F05D2220/40F05D2260/96Y02T10/144F01D25/06F02B37/24Y02T10/12F01D17/16F02B37/22F02B39/16
Inventor G·里德
Owner MAN ENERGY SOLUTIONS SA
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