Cleaning device

Abstract

The cleaning device for the exhaust gas turbine comprises openings, which open out into the flow duct upstream of the nozzle ring, for injecting a cleaning liquid from the radially inner side into the annular flow duct, a cavity, which is connected to the openings, for distributing the cleaning liquid to the openings, and a supply line for supplying the cleaning liquid to the cavity. The cleaning device according to the invention provides a uniform distribution of water to nozzle ring or to the rotor blades of the turbine rotor wheel.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority under 35 U.S.C. §119 to EP Application 04405513.5 filed in European Patent Office on 16 Aug. 2004, and as a continuation application under 35 U.S.C. §120 to PCT / CH2005 / 000465 filed as an International Application on 10 Aug. 2005 designating the U.S., the entire contents of which are hereby incorporated by reference in their entireties.FIELD [0002] An exhaust gas turbine having a cleaning device is disclosed as it relates to exhaust gas turbines for internal combustion engines. BACKGROUND INFORMATION [0003] Exhaust gas turbines, in particular in exhaust gas turbochargers, are used in conjunction with an internal combustion engine. The exhaust gas from the internal combustion engine is utilized as a driving medium for driving the turbine wheel. The turbine wheel is connected by means of a shaft to the compressor wheel which compresses the intake air which is supplied to the internal combustion engine. The ...

AI Technical Summary

Benefits of technology

"The patent describes a device for cleaning an exhaust gas turbine using a simplified cleaning device. The device injects a cleaning liquid into the flow duct of the turbine to provide a uniform distribution of the liquid over the guide device. The cleaning liquid is injected from the inner side of the flow duct, which allows the liquid to be better distributed over the guide elements and reduces the need for complex tubes in the outer region of the turbine housing. The cleaning liquid is directed at the guide elements that are most contaminated, making more effective cleaning possible. The injection takes place in the axial direction and / or in the direction of rotation in the region of the stagnation point, which reduces the injection pressure and allows for a lower flow resistance."

Problems solved by technology

Said spacing from the guide blades can however have the result that the cleaning medium is dissolved in the flow to too great a degree, and it is therefore not possible to provide a cleaning action which even comes close to that of a focused jet.

Targeted cleaning of the guide elements therefore cannot be provided.

In addition, if the injection takes place from the radially inner side, it is generally the case that no tubes which are complex to relocate are required in the radially outer region of the turbine housing, which could otherwise lead to insulation losses in terms of the insulation of the housing.

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