How to reinforce the inward-extending nozzles of large internal floating roof dome storage tanks?
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A large internal floating roof dome storage tank with a capacity of 1000 M3 (DN11500, L=10700) is to be designed. The inlet N1 (DN80) extends from the top of the tank inward to a position 200 mm below the bottom. How should this inlet fitting be reinforced? The triangular supports on the sides will definitely interfere with the internal floating roof and make sealing difficult; what measures should be taken for reinforcement?
The DN80 pipe is too thin for the floating platform. If this pipe must run from the top to the bottom of the tank, it can be installed inside a guide post or a leveling post. That is, a large tube is placed over it
Side triangular supports can be used under the floating pad, or it can be fixed directly to the tank bottom plate, without affecting the upward and downward movement of the floating pad.
Add three reinforcing ribs inside the top of the tank, and at the bottom, weld guide angle steel or guide sleeves to the tank bottom (using three rib plates welded to the tank bottom).
A tank with a capacity of 1,000 cubic meters can’t be considered a large floating roof tank, right? The standard is 50,000 cubic meters
Change the pipe diameter to 150, or use a thick-walled pipe; a triangular bracket can be welded to the tank wall at a height of 80 above the bottom plate. Pass through the floating pad, which is secured with ducts and guide wires.