Babcock-Hitachi Kabushiki Kaisha

Hitachi Plant Technologies, Ltd.

Shinichi Sagawa

Shigeyoshi Kawaguchi

Yasuaki Kawashima

Yoshitaka Masuda

Masakatsu Imamura

Motoshi Horinouchi

Tadayoshi Mariyama

Minoru Sakino

New and useful method of building a boiler frame significantly reduces the use of high load-lifting height crane and improves the operation efficiency despite bad weather. Multiple levels of steel supporting posts, which are established beforehand, are linked together with their top portion by beams and the 9th floor unit is fixed to the posts at an intermediate floor position temporarily. Suspension rods, which are suspended from lifting jacks, are then connected to the 8th floor unit and jacked up, while floor units made for lower than the 8th floor are connected on the ground to form a multi-floor unit. After connecting the multi-floor unit to the 9th floor unit the temporary fixation is released, the multi-floor unit is lifted up, and each floor unit is permanently fixed to the designated floor position repeatedly and respectively.

Method of building a boiler frame

New and useful method of installing furnace walls for a boiler that does not require dedicated temporary lifting mechanism and reduces the installation work period significantly is disclosed. The method of installing furnace walls for a boiler configured with an upper portion of boiler properand a lower portion of boiler proper, temporally suspending two left and right face furnace water wall panelsamong four furnace water wall panels, the upper portion of boiler proper is assembled while it is hanged from a top girder modulepositioned on the top portion of a center portion in a boiler frame, a furnace rear walland a furnace front wallamong the furnace water wall panels are hanged sequentially, the temporally suspended two left and right face furnace water wall panelsare moved to designated positions, and the upper ends of the furnace water wall panelsandare connected with the lower end of the upper portion of boiler proper

Method of installing furnace walls of a boiler

Growing community of inventors

Chiyoda-ku, Japan

Shinichi Sagawa