Integrated collaborative working device for pipelines in lng storage tank and vertical maintenance ladder

Abstract

The invention discloses a synergetic operating device with integration of LNG storage tank inner pipelines and longitudinal maintenance ladders. The synergetic operating device comprises three LNG storage pipelines and longitudinal maintenance ladders which are arranged in an LNG storage tank, wherein the three LNG storage tank pipelines are arranged at the bottom of the LNG storage tank; connection lines in the horizontal direction are triangular; the three LNG storage tank pipelines are parallel to one another; a plurality of annular connection parts are welded on the LNG storage tank pipelines; three annular connection parts, arranged on the same plane, on the three LNG storage tank pipelines are connected with one another in a welding mode by virtue of horizontal connection parts; the longitudinal maintenance ladders are arranged on two adjacent horizontal connection parts; each longitudinal maintenance ladder comprises two parallel vertical pull rods and a plurality of step beams which are connected among the vertical pull rods. According to the synergetic operating device, the maintenance ladders and the pipelines are combined into an integrated structure; the safety of the structure is improved; the stress of the single pipeline constraint position is alleviated; the site construction is facilitated; the construction period can be shortened.

Description

technical field [0001] The invention relates to an integrated cooperative working device for a pipeline in an LNG storage tank and a vertical maintenance ladder, and belongs to the technical field of liquefied natural gas (LNG) transmission and distribution. Background technique [0002] Liquefied natural gas (LNG) is a clean energy with methane as the main component obtained after cooling conventional natural gas to below -160°C under normal pressure through a low-temperature liquefaction process and separating a large amount of sulfur, phosphorus and other polluting elements. The effect of low temperature causes a huge change in the storage state, the volume is compressed to about 1 / 600, and the density is about 480Kg / m 3 Colorless, odorless and non-corrosive liquid. In the LNG industry chain, safe storage is a key link. LNG storage tank is the core storage facility of the LNG receiving system, which requires large investment, intensive technology and high safety require...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an integrated cooperative working device for the inner pipeline of the LNG storage tank and the vertical maintenance ladder. The problem of large relative displacement caused by vibration or force has realized the separation of the maintenance ladder from the inner tank wall, and the device can ensure the coordinated and stable work of the pipeline in the tank and the maintenance ladder

Therefore, the present invention can successfully solve the difficulty that the inner tank wall of the self-supporting LNG storage tank cannot be welded

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