Ventilation system for lng receiving terminal

Abstract

The invention discloses a ventilation system used for an LNG (Liquefied Natural Gas) receiving terminal. The ventilation system comprises an air supply fan, an air exhaust fan and an LNG storage tank supporting short column group, wherein the air supply fan and the air exhaust fan are both arranged at the top of the LNG receiving terminal; the air supply fan is communicated with an air supply ventilation pipe, the air supply ventilation pipe extends to the bottom of the LNG receiving terminal, and an air outlet of the air supply ventilation pipe is formed in the bottom of an LNG storage tank; the air exhaust fan is communicated with an air exhaust ventilation pipe, the air exhaust ventilation pipe extends to the bottom of the LNG receiving terminal, and an air inlet of the air exhaust ventilation pipe is formed in the bottom of the LNG storage tank; the LNG storage tank supporting short column group is arranged at the bottom of the LNG storage tank, and comprises a plurality of supporting short columns. Due to the effect of the ventilation system disclosed by the invention, surrounding air of the LNG storage tank is in a circulating state, and an accumulation effect of low temperature inside the LNG receiving terminal is avoided.

Description

technical field [0001] The invention relates to a ventilation system for an LNG receiving terminal, belonging to the technical field of liquefied natural gas (LNG) transmission and distribution. Background technique [0002] The offshore LNG receiving terminal is an important facility for storing LNG liquid, mainly including concrete caissons and LNG storage tanks placed in the caisson structure. Due to the ultra-low temperature characteristics of LNG liquid (-162°C), the surrounding concrete will be in a low-temperature state, which will affect the normal operation of the concrete structure. How to shield the ultra-low temperature effect is an important problem that must be solved in the development of LNG storage equipment. Especially in the closed environment of the caisson, it is difficult to exchange the air inside the caisson with the outside air, which exacerbates the adverse effect of the low temperature liquid on the surrounding concrete structure. Contents of the...

AI Technical Summary

Problems solved by technology

Due to the ultra-low temperature characteristics of LNG liquid (-162°C), the surrounding concrete will be in a low-temperature state, which will affect the normal operation of the concrete structure. How to shield the ultra-low temperature effect is an important problem that must be solved in the development of LNG storage equipment

Especially in the closed environment of the caisson, it is difficult to exchange the air inside the caisson with the outside air, which exacerbates the adverse effects of low temperature liquid on the surrounding concrete structure

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