Method of installing heating coil used for liquid cargo tank of chemical cargo ship

Abstract

The invention relates to a method of installing a heating coil used for a liquid cargo tank of a chemical cargo ship. The liquid cargo tank is divided first, corresponding heating coil unit modules ofeach liquid cargo tank unit are prepared separately and then are hoisted and installed according to an installation progress to achieve one cabin and one module in each liquid cargo tank. Heating coil pipe docking work of an original slipway is completed in advance on a platform, the mode that hoisting is conducted once in each cabin is achieved, the labor intensity is reduced, the working environment of construction personnel is improved, the working efficiency is improved, the slipway cycle is greatly shortened, and the construction cost of the chemical cargo ship is reduced.

Description

technical field [0001] The invention relates to the technical field of marine heating coils, in particular to a heating coil installation method for liquid cargo tanks of chemical tankers. Background technique [0002] There are many kinds of liquid chemicals, and the chemical properties of various chemicals are different. Generally, they are flammable, explosive, and some are toxic. Some chemicals are solid at room temperature and become liquid when heated, and the viscosity of some chemicals will increase sharply as the temperature decreases. Maintain a certain temperature requirement. At present, chemical tankers adopt a certain length of heating coils arranged at the bottom of liquid cargo tanks to ensure their heating and cooling requirements. [0003] Because chemicals are generally flammable, explosive, and highly corrosive, it is required that the heating coil must be made of high-corrosion stainless steel pipes, and the pipes must be connected in the form of butt ...

AI Technical Summary

Problems solved by technology

In order to meet the heating coefficient requirements of each cabin, a large number of heating coils need to be arranged in each cabin, and the length of each heating pipe raw material is generally 6 meters or 9 meters, which results in dozens of butt joints in each cabin. The joints need to be welded. In the past, shipyards generally installed heating coils in bulk or in small pieces at the berth or dock stage. The construction period was long, the environment was poor, and the quality of pipe butt welding could not be effectively guaranteed. It is easy to cause collision damage on the surface of the pipe, which increases the cost of shipbuilding

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