Title:
SUPPORTING STRUCTURE OF BOILER HORIZONTAL HEAT TRANSFER TUBE
Document Type and Number:
Japanese Patent JP3875933
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a supporting structure of a boiler horizontal heat transfer tubes for reducing thermal stress to a supporting part and obtaining a structurally stable hanging structure.
SOLUTION: The supporting structure of the boiler horizontal heat transfer tube supports horizontal heat transfer tubes 11, 12 of a secondary superheater 2 and a primary superheater 3 of a boiler for recovering steam by a hanging tube 6 hung down from an upper part of the boiler, wherein high temperature gas is introduced from an upper part, and the secondary superheater 2 and the primary superheater 3 are sequentially arranged from the upper part. Only the horizontal heat transfer tube 12 on a lowest stage of the primary superheater 3 is fixed on the hanging tube, and the other horizontal heat transfer tubes 11, 12 of the secondary superheater and the primary superheater are sandwiched so as to slide in a tube axial direction.
Inventors:
Yukimasa Tanaka
Yoshio Egawa
Yoshio Egawa
Application Number:
JP2002219360A
Publication Date:
January 31, 2007
Filing Date:
July 29, 2002
Export Citation:
Assignee:
Nippon Steel Engineering Co., Ltd.
Nippon Steel Plant Design Co., Ltd.
Nippon Steel Plant Design Co., Ltd.
International Classes:
F22B37/20; (IPC1-7): F22B37/20
Domestic Patent References:
| JP10196905A | ||||
| JP5316102A | ||||
| JP59130984U | ||||
| JP2127979U | ||||
| JP8285210A |
Attorney, Agent or Firm:
Masu Kobori
Takato Tsutsumi
Takato Tsutsumi