A 27000dwt chemical/product tanker construction process for stainless steel liquid cargo tanks

Abstract

The present invention relates to a 27000DWT chemical / product oil tanker stainless steel liquid cargo tank construction process. The liquid cargo tank adopts the technological process of small group erection, middle group erection, segmental, segmental general group and berth hoisting and closing. , the liquid cargo tank is reasonably divided into multiple annular three-dimensional segments, and the multiple annular three-dimensional segments include double bottom segments, side segments, deck segments, longitudinal grooved bulkhead segments, and transverse grooved bulkheads Segmentation; the double bottom section of the cargo hold adopts the inner bottom plate as the base surface to be reversed, the side section is made of the outer plate as the base surface, the deck section and the upper deck are used as the base surface, and the transverse groove bulkhead section and The sections of the longitudinal trough bulkhead are built horizontally with the front rib as the base and laterally with the left side as the base. The advantages of the present invention are: the stainless steel liquid cargo tank construction process of the present invention, reasonable segmentation and construction method, is conducive to safe production, greatly improves work efficiency, and shortens the construction period.

Description

technical field [0001] The invention relates to the field of shipbuilding, in particular to a construction process for a stainless steel liquid cargo tank of a 27000DWT chemical / product oil tanker. Background technique [0002] In the world and my country in the mid-1980s, large and medium-sized multi-purpose chemical tankers of 10,000 to 40,000 tons appeared, and the proportion of hull liquid cargo tanks made of stainless steel increased. Each cargo tank has its own pump and piping system. After decades of production research and development, according to the national standard (CB / T3280-92), by 2007, China has been able to produce 55 brand names of new stainless steel products, and has gradually formed a climate. [0003] The cargo tanks of chemical tankers are constructed of stainless steel, which further improves the corrosion resistance and service life of the cargo tanks. In modern times, with the development of science and technology, the research and development of n...

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Problems solved by technology

[0004] In the process of manufacturing stainless steel liquid cargo tanks of chemical tankers, because stainless steel is used in hull construction, the price is relatively expensive, and the whole process of storage and passivation treatment, cutting, forming, welding, grinding, final cleaning of cargo tanks and pickling is compared. Complicated and high-tech, the current construction period of the shipyard is generally long, and it is difficult to guarantee the quality of the construction project

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