Title:
TRIP SYSTEM FOR STEAM TURBINE
Document Type and Number:
WIPO Patent Application WO/2017/104036
Kind Code:
A1
Abstract:
A trip system for a steam turbine is provided which is capable of ensuring a sufficient flow rate when control oil is drained from a main stop valve. The present invention is provided with: an emergency shut-off device (10) for shutting off the supply of control oil; and a drainage device (45) for draining the control oil. The emergency shut-off device (10) is provided with: a chamber (22a) in which a piston (12A) is moved from a normal-operation position to an emergency position; a chamber (22b) through which the control oil is supplied to an ECV (32) during normal operation; a chamber (22c) through which the control oil for the ECV (32) is drained during an emergency; and a chamber (22d) through which the control oil for a TTV (31) is drained during an emergency. Piping through which the control oil is supplied includes: piping (L1) which is connected to chamber (22b); and piping (L2) which is connected in parallel to the drainage device (45), chamber (22a), chamber (22d), and the TTV (31), via an orifice (33).
Inventors:
NISHITANI KEN (JP)
JAIN ABHAY (JP)
JAIN ABHAY (JP)
Application Number:
PCT/JP2015/085307
Publication Date:
June 22, 2017
Filing Date:
December 17, 2015
Export Citation:
Assignee:
MITSUBISHI HEAVY IND COMPRESSOR CORP (JP)
International Classes:
F01D21/16; F01D21/00
Foreign References:
| JP2015161204A | 2015-09-07 | |||
| JPH07145705A | 1995-06-06 | |||
| JPS588206A | 1983-01-18 | |||
| JPH10131711A | 1998-05-19 | |||
| JPS55101706A | 1980-08-04 | |||
| JP2001055903A | 2001-02-27 | |||
| JPH0351284U | 1991-05-17 | |||
| JP2001241559A | 2001-09-07 |
Other References:
See also references of EP 3351747A4
Attorney, Agent or Firm:
MITSUISHI, Toshiro et al. (JP)
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