Method to assemble a steam generator

Details Method to assemble a steam generator Method to assemble a steam generator

2007-11-20

2007-11-20

Bryant, David P. (Department: 3726)

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

C029S890030, C029S429000, C122S494000

Reexamination Certificate

active

10902907

ABSTRACT:
When constructing a steam generator, buckstay modules are joined with tube wall units to form buckstay and tube wall modules while the boiler steel structure is being erected, and they are temporarily placed within the boiler steel structure level by level. Then an external part of the boiler top main grid is constructed whose beams are flush with the tube walls of the buckstay and tube wall modules. Then the boiler wall is mounted by aligning and welding the individual tube wall modules from top to bottom. Simultaneously, the internal components are constructed on the boiler base and hoisted to installation height. Preassembling buckstay and tube wall modules eliminate the need for inserting buckstays or tube walls from above through the boiler top main grid. For this reason, the roof opening can be smaller than usual. The inner boiler top main grid therefore does not require its own main beams, which saves a substantial amount of steel.

REFERENCES:
patent: 3751783 (1973-08-01), Roberts, Jr. et al.
patent: 6588104 (2003-07-01), Heidrich
patent: 690 00 992 (1993-06-01), None
patent: 100 14 758 (2001-10-01), None
patent: EP 402248 (1990-12-01), None
patent: 04257602 (1992-11-01), None
German Search Report, dated Feb. 3, 2004.

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