Title:
CONTROL DEVICE, GAS TURBINE, CONTROL METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/065241
Kind Code:
A1
Abstract:
This control device controls the temperature of a shaft seal portion provided around a rotating shaft of a rotating machine to an appropriate temperature by adjusting a supply amount of cooling air supplied to the shaft seal portion. The control device calculates a sensitivity exhibited by the temperature of the shaft seal portion with respect to the flow rate of the cooling air supplied to the shaft seal portion, and controls the flow rate of the cooling air on the basis of the calculated sensitivity in such a way that the sensitivity attains a predetermined target value. In calculating the sensitivity, the flow rate is varied within a predetermined range about a certain flow rate. The temperature sensitivity at the central flow rate is calculated from the variation in the temperature of the shaft seal portion with respect to the variation in the flow rate.
Inventors:
HIROE TAKAHARU (JP)
HADA SATOSHI (JP)
IDE KAZUNARI (JP)
TATEISHI KOKI (JP)
TAKENAKA RYUJI (JP)
FUKUMOTO KOSHIRO (JP)
YOSHIOKA SHINICHI (JP)
HADA SATOSHI (JP)
IDE KAZUNARI (JP)
TATEISHI KOKI (JP)
TAKENAKA RYUJI (JP)
FUKUMOTO KOSHIRO (JP)
YOSHIOKA SHINICHI (JP)
Application Number:
PCT/JP2018/033804
Publication Date:
April 04, 2019
Filing Date:
September 12, 2018
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F02C7/18; F01D5/08; F01D25/00; F01D25/12; F02C7/28
Foreign References:
| JP2015145644A | 2015-08-13 | |||
| JPH05171958A | 1993-07-09 | |||
| JP3100723B2 | 2000-10-23 | |||
| US20130152602A1 | 2013-06-20 | |||
| JPH0957808A | 1997-03-04 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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