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Title:
METHOD FOR SETTING COOLING TEMPERATURE FOR METAL WALL SECTION AND METHOD FOR COOLING METAL WALL SECTION
Document Type and Number:
WIPO Patent Application WO/2019/058852
Kind Code:
A1
Abstract:
The present invention includes: a cooling temperature-stress relationship computation step for computing a cooling temperature-stress relationship indicating a relationship between the temperature of an outer surface of a metal wall section after cooling, said metal wall section partitioning a high-pressure fluid, and stress acting on the cooled portion; and a post-cooling temperature computation step for computing, from the cooling temperature-stress relationship and a constant fatigue line indicating a temperature-stress relationship and representing a target creep life of the metal wall section, a target post-cooling temperature for the outer surface satisfying the target creep life. In the cooling temperature-stress relationship computation step, the cooling temperature-stress relationship is computed while taking into consideration the thickness of the metal wall section.

Inventors:
KATO Chikako (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
WATANABE Daigo (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
SAKATA Fumitoshi (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
MATSUO Takeshi (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
URASHITA Yasutaka (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
OHYAMA Hiroyuki (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
Application Number:
JP2018/030901
Publication Date:
March 28, 2019
Filing Date:
August 22, 2018
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYSTEMS, LTD. (3-1 Minatomirai 3-chome, Nishi-ku Yokohama-sh, Kanagawa 01, 〒2208401, JP)
International Classes:
F16L53/00; F16L57/00; G21D1/00
Foreign References:
JP5701349B22015-04-15
JPH0666409A1994-03-08
Attorney, Agent or Firm:
FUJITA, Takaharu (37F The Landmark Tower Yokohama, 2-2-1 Minatomirai, Nishi-ku, Yokohama-sh, Kanagawa 37, 〒2208137, JP)
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