Alstom Technology Limited

Ansaldo Energia Switzerland Ag

General Electric Technology Gmbh

Sebastian Marc Schwarzendahl

Jaroslaw Leszek Szwedowicz

Marcus Neubauer

Andreas Hohl

Wolfgang Kappis

Jörg Wallaschek

Andreas Bauer

Lars Panning

The application relates to a method and a device for suppressing ice formation on intake structures of a compressor, particularly the compressor of a gas turbine. The technical aim of the present invention is to provide a method and a device for suppressing the formation of ice on said structures, which avoid the disadvantages of known solutions, such as a reduction of the performance of the gas turbine, and have a simple and broad applicability. According to the present invention the mechanical vibratory energy of said structures during operation is converted into electrical energy by a piezoelectric element, firmly applied to said structure, and in a connected electrical circuit the generated electrical energy is then converted into thermal energy by an ohmic resistor and this thermal energy is conducted to at least a portion of the structure for suppressing ice formation. Excess energy may be transmitted by a transmitter to other circuits in adjacent structures.

Method and device for suppressing the formation of ice on structures at the air intake of a turbomachine

In a method for influencing, in particular damping or suppressing, mechanical vibrations occurring during operation in a turbomachine blade (), the mechanical vibratory energy of the turbomachine blade () is first converted into electrical energy and the electrical energy generated is then converted into heat loss. Effective damping which can be used especially simply and in a versatile way is achieved in that the piezoelectric effect is used in order to convert mechanical vibratory energy into electrical energy.

Method for influencing, damping, or suppressing mechanical vibrations occurring during operation in a turbomachine blade, a turbomachine blade useful for carrying out the method, and a piezoelectric damping element

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Hannover, Germany

Sebastian Marc Schwarzendahl