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Title:
AIR NOZZLE, OUTER CASING, BOILER, POWER GENERATION SYSTEM, AND METHOD FOR REPLACING AIR NOZZLE OUTER CASING
Document Type and Number:
WIPO Patent Application WO/2019/043830
Kind Code:
A1
Abstract:
The purpose of the invention is to provide an air nozzle, an outer casing, a boiler, a power generation system, and a method for replacing an air nozzle outer casing that can reduce the workload involved in repair operations. This air nozzle (12) comprises: a cylindrical inner casing (35) that is fixed to the bottom of a furnace; a cylindrical outer casing (36) in which the inner casing (35) is disposed; an inner casing blocking member (37) that has a column portion (44) fixed to the top end face (35d) of the inner casing (35) and extending vertically upward and that blocks an upper opening (35a) of the inner casing (35); and a first outer casing blocking member (38) that has a columnar cylindrical portion (46) extending vertically upward and that blocks an upper opening (36a) of the outer casing (36). The column portion (44) is housed in the columnar cylindrical portion (46) so that the outer circumferential face (44a) of the column portion (44) lies along the inner circumferential face (46a) of the columnar cylindrical portion (46). The upper end of the column portion (44) and the columnar cylindrical portion (46) are fixed by welding.

Inventors:
MATSUMOTO, Shintaro (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
YAMASAKI, Yoshinori (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
Application Number:
JP2017/031164
Publication Date:
March 07, 2019
Filing Date:
August 30, 2017
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:
F23C10/20; F23G5/30
Domestic Patent References:
WO2016009289A12016-01-21
Foreign References:
EP2522903A22012-11-14
US20150321153A12015-11-12
JP2006162161A2006-06-22
JP2016530074A2016-09-29
CN203413617U2014-01-29
CN204063021U2014-12-31
CN203836946U2014-09-17
CN103423739A2013-12-04
CN203177163U2013-09-04
US20160281977A12016-09-29
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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