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Title:
METALLIC WALL SECTION COOLING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/058851
Kind Code:
A1
Abstract:
Provided is a metallic wall section cooling method for partially cooling the outer surface of a pipe for circulating steam. The temperature of a pressurized fluid is 500-700°C and the temperature of the outer surface of the pipe is at least 200°C. The temperature difference in the plate thickness direction of the pipe is no greater than 300°C. The temperature difference at a cooled portion in the pipe axial direction of the pipe is 500°C if the dimension of the pipe in the pipe axial direction is within the range of ±100 mm. The temperature difference in the pipe circumferential direction of the pipe is no greater than 50°C.

Inventors:
WATANABE Daigo (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
KATO Chikako (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:
JP2018/030897
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:
F16L57/00; F16L53/70; G21D1/00
Foreign References:
JP5701349B22015-04-15
JP2016090031A2016-05-23
JP2016160959A2016-09-05
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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