AN SIMPLIFIED CLAMPING PLATFORM APPARATUS FOR BEND TUBE FIT UP FOR WELDING IN WATER WALL PANELS USED IN FURNACE OF BOILER?

摘要

The invention relates to a simplified clamping platform for positioning and fit up of bent tubes to high pressure steam generator water wall panels used for carrying water and steam located in and around furnace of high pressure boilers for power generation. A base platform (02) placed horizontally and interlocked with fasteners (03) at two ends to bottom channels (12) of A-Frame (01). The bottom channels (12) are welded perpendicular to A-frame (01). The fine adjustment of A-Frame (01) with ground floor is carried out by means of fasteners (10) and (11) which are provided in the bottom of the A frame (01). The mounting assembly for clamping in position is done in sequence of fasteners (05), (06), (07) and 09). The counter weight (14) is provided on the panel (16) for leveling with bent tubes (15). The necessary supporting stands are provided (not shown) in the water wall panel to act as simply support during root welding. The device is ready for root welding with out and external members such as bridge pieces welded on the work pieces (15) and (16) thereby avoiding the grinding and gas cutting reworks and saves cycle time and man power.