SILENCING DEVICE, SILENCING METHOD, AND PROGRAM

Title:

SILENCING DEVICE, SILENCING METHOD, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2023/276370

Kind Code:

A1

Abstract:

A silencing device according to the present invention includes: a first waveform acquisition unit that, on the basis of a reference signal that detects vibrations at a first position on an exhaust duct of a gas turbine, acquires a first waveform representing vibration of the exhaust duct; an unbalance motor that applies vibrations of a specified target frequency to the exhaust duct at a second position on the exhaust duct; a second waveform acquisition unit that, on the basis of measurement signals obtained by measuring rotation pulses of the unbalance motor, acquires a second waveform representing rotations of the unbalance motor; a setting unit that sets the target frequency on the basis of the first waveform; and a correcting unit that corrects the target frequency so that the first waveform and the second waveform are at a predetermined phase difference.

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Inventors:

TAKEI YOSHIKO (JP)
KUDO TOSHIFUMI (JP)
SHINO NAOKI (JP)

Application Number:

PCT/JP2022/014914

Publication Date:

January 05, 2023

Filing Date:

March 28, 2022

Export Citation:

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Assignee:

MITSUBISHI POWER LTD (JP)
MITSUBISHI HEAVY IND LTD (JP)

International Classes:

F02C7/24; F01D25/00; F01D25/30; F02C7/00; G10K11/178

Foreign References:

JP2018005081A	2018-01-11
JPH05188978A	1993-07-30

Attorney, Agent or Firm:

MATSUNUMA Yasushi et al. (JP)

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