Hydraulic jacking automatic welding inverted construction method of large-sized storage tank

Abstract

The invention relates to a hydraulic jacking automatic welding inverted construction method of a large-sized storage tank, which is safe, reliable and advanced. The welding quality of a tank body can satisfy standard requirements and overcomes the defects of more work high above the ground of a forward-erection method of the large-sized storage tank, large input quantity of a large-sized crane, and the like. The method comprises the following steps of: prefabricating a bottom plate, a wall plate, a floating roof and accessories; installing and welding a tank bottom plate; installing a hydraulic jacking device; installing tracks of a horizontal welding machine; welding butt seams and longitudinal seams of a top wall plate group; installing a tank top; lifting the wall plate; welding the wall plate, a surrounding plate and longitudinal seams; welding ring seams; installing a top wall plate; and welding an edge plate. The invention mainly reforms a 'submerged-arc longitudinal welding machine' of the 'forward-calculation method' from a 'hanging type' into a 'track type' in order to adapt to a 'reversed method'. The invention adopts a one-side welding double-side forming technology and adopts the 'reversed method' to overcome the disadvantages of a 'forward-erection method installing process of the large-sized storage tank.

Description

Construction method of hydraulic jacking, automatic welding and flip-chip for large storage tanks Technical field: The invention relates to a construction method, in particular to a hydraulic jacking and automatic welding and flip-chip construction method for a large storage tank. Background technique: With the rapid development of my country's economy and the continuous improvement of people's living standards, energy consumption has increased sharply, and the demand for petroleum and refined oil has increased sharply. At present, my country has become a major oil importer, and oil has become an important strategic material for the country. It is directly related to my country's economic development, social stability and national security. It is imminent to increase crude oil reserves. Therefore, my country's national oil reserves and refined oil depots Construction has been given great attention. Large vertical steel storage tanks are very important storage and transpor...

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