LNG liquid storage tank shock insulation layer

Abstract

The invention provides an LNG liquid storage tank shock insulation layer which is adaptive to high pile foundation shock insulation on the lower portion of an LND liquid storage tank where cold gas needs to be removed by dispersing in a ventilation mode. The LNG liquid storage tank shock insulation layer comprises a plurality of reaction walls, a plurality of sliding supports, a plurality of lamination rubber supports and a plurality of sticking dampers. The sliding supports are fixedly connected with the lower bottom face of a bottom plate of a tank body of the liquid storage tank and the top face of a pile foundation respectively. The lamination rubber supports are fixedly connected with the lower bottom face of the bottom plate of the tank body and the top faces of the reaction walls respectively. The two ends of each sticking damper are hinged to the lower surface of the bottom plate of the tank body and the stand face of the corresponding reaction wall through ball hinged supports respectively. The LNG liquid storage tank shock insulation layer can be well adaptive to horizontal displacement and vertical vibration of the liquid storage tank caused by an earthquake, the earthquake response of the tank body and the pulse pressure, the convection effect and the waggling wave height of storage liquid can be greatly lowered, accordingly, the influence on the final shock insulation effect from changing of liquid storage amount in the liquid storage tank can be lowered, and a future earthquake with the uncertain earthquake magnitude can be well resisted.

Description

technical field [0001] The invention belongs to the field of engineering foundation shock isolation, and relates to a shock isolation layer of a liquid storage tank. Background technique [0002] Liquefied natural gas (LNG for short) is a non-toxic, non-polluting, high-quality and efficient energy source. In order to meet my country's energy demand and achieve sustainable economic and social development, LNG storage tanks with large or super-large capacity are currently being built. This kind of project has played the role of benefiting the country and the people, and belongs to the city lifeline project. However, once an earthquake occurs, the liquefied natural gas storage tank is prone to damage, causing the natural gas stored in the tank to leak out, which may cause very serious disaster consequences, such as explosions, fires, shock waves, etc., thereby affecting urban safety. pose a serious threat. Therefore, the design should be designed according to the operating b...

AI Technical Summary

Problems solved by technology

However, since the liquid storage volume of the storage tank changes dynamically, when the liquid storage volume changes, the vibration cycle of the storage tank will also change, and only using laminated rubber bearings for vibration isolation cannot achieve an ideal vibration isolation effect

Furthermore, when encountering rare earthquakes exceeding the design, the large horizontal displacement of the isolation layer may exceed the limit displacement of the laminated rubber bearing, thus causing damage to the laminated rubber bearing and losing the seismic isolation effect

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