LNG (liquefied natural gas) ship gas dome safety valve pipe accessory assembling and positioning tool

Abstract

The utility model relates to an LNG ship gas dome safety valve pipe accessory assembling and positioning tool. The tool is characterized in that a safety valve pipe accessory comprises a first end and a second end, the first end of the safety valve pipe accessory is connected with a gas dome through a first flange, and the second end of the safety valve pipe accessory is connected with a ventilation mast pipe accessory of a liquid cargo tank through a second flange; and the positioning tool comprises a tool panel, wherein a first through hole matched with a bolt hole of the second flange is formed in the tool panel; and a supporting assembly used for supporting the tool panel. Through the simple and convenient design scheme and low manufacturing cost, a manufacturer can conveniently and effectively assemble, position and weld by using the tool, so that the assembling and positioning error is reduced, the welding deformation is reduced, the potential safety hazard is eliminated, and the product quality is improved.

Description

technical field [0001] The application relates to the technical field of steel structure fabrication, and in particular to a tool for assembling and positioning a gas dome safety valve pipe accessory of an LNG ship. Background technique [0002] Each liquid cargo tank of an LNG (Liquefied Natural Gas, liquefied natural gas) ship is generally equipped with two safety valve assemblies, one safety valve assembly weighs about 460kg, plus the safety valve pipe accessories, the safety valve pipe accessories weigh about 560kg, and the specification is Φ219 .1*3.76. The first end of the safety valve pipe attachment is welded to the gas dome cylinder (diameter of the cylinder is about 2000mm), and the second end of the safety valve pipe attachment is connected to the venting mast pipe attachment of the liquid cargo tank. [0003] Since the second end of the safety valve pipe attachment needs to be docked with the breathable mast pipe attachment on the ship, the assembly and position...

AI Technical Summary

Problems solved by technology

[0003] Since the second end of the safety valve pipe attachment needs to be docked with the breathable mast pipe attachment on the ship, the assembly and positioning accuracy of the flange center positions at both ends is relatively high, and the entire safety valve pipe attachment is heavy, making hoisting, assembly and positioning difficult. In addition, the installation direction of the safety valve itself is inconsistent, resulting in the eccentric center of gravity of the overall structure, which increases the difficulty of hoisting, assembly and positioning, and easily causes safety hazards

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