Fully-underground LNG storage tank with top air inlet jacking device

Abstract

The invention discloses a fully-underground LNG storage tank with a top air inlet jacking device. The fully-underground LNG storage tank with the top air inlet jacking device comprises an LNG storagetank body. The dome center of the LNG storage tank body is provided with an air inlet. The dome is provided with a plurality of guide pulleys around the air inlet. Each guide pulley is provided with asteel wire rope in a supporting manner, wherein one end of the steel wire rope penetrates through the air inlet to be fixed to a bearing platform of the LNG storage tank body, the other end of the steel wire rope is connected with a winch through a guide sliding trolley arranged on the edge of the dome, the winch is fixed outside the LNG storage tank body. According to the fully-underground LNG storage tank with the top air inlet jacking device, the problem that the fully-underground LNG storage tank cannot achieve a manner that the bottom of the tank wall is opened to achieve air inlet jacking like a common overground tank is solved; the dome structure is integrally installed, and the construction risk caused by high altitude bulk hoisting can be avoided; a bottom air inlet is omitted, and the integrity of a concrete tank wall structure is ensured; and in the whole jacking operation process, the position of a dome frame can be monitored and adjusted in real time through a pulley block balance guide device and an upper balance drafting device, and precision and stability of the whole jacking process are ensured.

Description

technical field [0001] The invention relates to an all-underground LNG storage tank, in particular to an all-underground LNG storage tank provided with a top air intake and lifting device, and belongs to the technical field of liquefied natural gas transmission and distribution. Background technique [0002] Safe storage is a key link in the liquefied natural gas (LNG) industry chain. LNG storage tank is the core storage facility of the LNG receiving system, which requires large investment, intensive technology and high safety requirements. At present, all LNG storage tanks in China are above-ground structures. In terms of mechanical performance, underground storage tanks have more advantages. Underground tanks have better shock resistance and safety, less possibility of collision with objects in the air, less influence of wind load, less influence of leakage, etc. [0003] At present, the installation of the dome of the above-ground LNG storage tank generally adopts the m...

AI Technical Summary

Problems solved by technology

The disadvantages of this scheme are: (1) the air inlet provided on the concrete tank wall needs to be poured and sealed after the roof is raised, which destroys the integrity of the structure; (2) the full underground LNG storage tank cannot The air port is set on the tank wall; (3) When the roof is lifted, the edge of the dome contacts the tank wall to generate friction, and the friction in all directions is uneven, which will cause the dome to deflect and tilt, and may even occur in extreme cases. Overturning and other accidents

Images