TMCP high-strength steel plate for large storage tank tank wall and its manufacturing method and tank wall structure

Abstract

A TMCP high-strength steel plate for the tank wall of a large storage tank and its manufacturing method and tank wall structure, the steel plate is thick at one end and thin at the other end in the length direction, and its plate thickness increases or decreases linearly in all or part of the length section; the steel plate The plate width and plate length are constant, and the thickness of the steel plate changes along the length direction. The ratio of the plate thickness Tb at the thickest end to the plate thickness Ta at the thinnest end is not greater than 3; L1, L2... are different distances from the thin end of the steel plate, At this distance, the thickness of the steel plate is T1, T2..., and so on; the thickness of the plate increases or decreases linearly within the length range of 0~L1, L1~L2..., and the thickness increases or decreases within the length range. The decreasing slope is constant. The present invention significantly reduces the material usage of the tank wall steel plate, reduces the prefabrication process of the wall plate, and improves the welding construction efficiency of the tank wall without affecting the capacity and safety of the storage tank; the tank wall steel plate has a large width, The thickness is characterized by a trapezoidal gradient, which is suitable for large storage tanks with a capacity of 100,000 to 150,000 cubic meters.

Description

technical field [0001] The invention relates to a TMCP high-strength steel plate for the tank wall of a large storage tank, a manufacturing method thereof and a tank wall structure. Background technique [0002] The construction of oil storage tanks can play an extremely important role in ensuring national energy security and responding to the shortage of refined oil supply. The large-scale construction of large-scale oil storage tanks in my country began in 2005. The first four national strategic oil reserve bases were put into use in 2008. A total of 164 oil storage tanks of 100,000 cubic meters were built, with a total reserve of 16.4 million cubic meters. , or about 14 million tons. In 2011, the second phase of the project involving 8 oil reserve bases and more than 200 large oil storage tanks of 100,000 to 150,000 cubic meters started construction. According to the plan, my country's crude oil national storage and commercial storage projects will also start construction...

AI Technical Summary

Problems solved by technology

[0021] ②However, the plate width of 2440mm is not the ideal plate width for domestic mainstream wide and thick plate manufacturers

As one of the prefabrication processes of traditional storage tank wall panels, the crimping of wall panels not only increases the manufacturing cost of storage tanks, but also prolongs the manufacturing cycle

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