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Prefabrication method for stainless steel tank vault and bottom plate
Apr 08, 2019

The layout of the top of the stainless steel tank vault should be drawn before the prefabrication. The distance between any adjacent welds should not be less than 200mm. There are two forms of stainless steel tank vault layout: one for the "Ten" word center typesetting, and the other for the melon skin plate typesetting. "The ten-character center method typesetting is because the vault is a sphere. The remaining pieces of different positions need to be cut off. The pre-fabrication cannot be carried out on the ground. Only when the site is compared, the table is cut after the installation. Typesetting can be accurately prefabricated in advance.

 

There are a plurality of fan-shaped plate sets on the top of the plate of the melon skin, which are welded to form a spherical crown. The inner side of the stainless steel tank is made of flat steel and the ribs are made of reinforced steel. The slab welds are used between the various fan-shaped plates. When the angled steel ring on the upper part of the wall is welded into a melon skin board, the positive and negative sides are just paired into two pieces of melon skin, and the butt welds are staggered.

 

The diameter of the row of the bottom of the stainless steel tank should be 0.1%~0-15% larger than the design diameter to offset the shrinkage during the welding of the large angle seam. The minimum dimension of the arcuate edge plate along the radial direction of the stainless steel tank bottom should not be less than 700 mm; the minimum straight edge dimension of the non-bow edge plate should not be less than 700 mm. The width of the middle panel shall not be less than 1000 mm and the length shall not be less than 2000 mm; the minimum straight edge dimension of the irregular medium web connected to the arcuate edge panel shall not be less than 70 mm.

 

The distance between any adjacent welds of the stainless steel tank vault prefabricated bottom plate shall not be less than 300 mm. The commonly used medium-slab weld joints are in the form of lap joints, and the lap joints are generally required to be controlled above 30 mm. For large stainless steel storage tank vault prefabricated medium web welded joints are also used for docking.www.wxlsshzb.com


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