ROTARY MACHINE STATE OBSERVATION DEVICE, ROTARY MACHINE, AND ROTARY MACHINE STATE OBSERVATION METHOD

Title:

ROTARY MACHINE STATE OBSERVATION DEVICE, ROTARY MACHINE, AND ROTARY MACHINE STATE OBSERVATION METHOD

Document Type and Number:

WIPO Patent Application WO/2016/092945

Kind Code:

A1

Abstract:

A state observation device (30) uses an ADC (37) to digitize a detection signal from a gap sensor (21) at a low sampling interval and uses a separation unit (38) to separate the digitized detection signal into vane detection signals considered to be for the detection of a vane of a compressor impeller and non-vane detection signals considered not to be for the detection of a vane. Further, the determination unit (39) extracts a vane peak detection signal considered to be for a vane peak by comparing a vane detection signal with vane detection signals corresponding to other vanes and non-vane detection signals, and a shaft vibration and tip clearance are determined as states of the compressor impeller on the basis of the extracted vane peak detection signal. Thus, the state observation device (30) is capable of observing the state of a rotary machine without carrying out high-speed sampling.

Inventors:

YOSHIDA TADASHI (JP)
OGAWA SHINJI (JP)
SAKAMOTO KOICHI (JP)
IWASA YUKIHIRO (JP)

Application Number:

PCT/JP2015/078257

Publication Date:

June 16, 2016

Filing Date:

October 06, 2015

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)

International Classes:

G01M99/00; F02C7/00; G01B7/14

Foreign References:

JPH06313711A	1994-11-08
JP2010175542A	2010-08-12
US20130311130A1	2013-11-21

Other References: