Low-temperature ultra-large liquefied natural gas storage tank

Abstract

The invention relates to the technical field of natural gas storage tanks, in particular to a low-temperature ultra-large liquefied natural gas storage tank. The low-temperature ultra-large liquefiednatural gas storage tank comprises a protective tank, a four storage structures, a rotary feeding structure, an intelligent control structure and a folding sun-shading structure, the storage structurecomprises connecting rods, mounting rings, four storage tanks, discharging hoses, valves and springs, the four storage tanks are distributed in a cross shape, the storage tanks are horizontally arranged on the inner side wall of the protective tank, and the outer side walls of the storage tanks are sleeved with a plurality of evenly-arranged mounting rings. Natural gas can be normally conveyed into the designated storage tank, traditional unified adding is not adopted, the proper amount of the natural gas can be sequentially added into the storage tanks, the situation that due to unified adding, the internal pressure of a single storage tank is increased easily, danger is generated, safety is guaranteed, a Z-shaped feeding pipe is replaced to be aligned with a feeding pipe needing to be corresponding, the manual adjusting process is not needed, time and labor are saved in the operation process, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of natural gas storage tanks, in particular to a low-temperature super-large liquefied natural gas storage tank. Background technique [0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere, and lithosphere (including oil field gas, gas field gas, mud volcano gas, coal bed methane, and biologically generated gas, etc.). The definition of "natural gas" that people have used for a long time is a narrow definition from the perspective of energy, which refers to the mixture of hydrocarbon and non-hydrocarbon gases naturally stored in the formation. In petroleum geology, it usually refers to oil field gas and gas field gas. Its composition is dominated by hydrocarbons and contains non-hydrocarbon gases. [0003] Referring to the Chinese patent of a transport device for hierarchical storage of compressed natural g...

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Problems solved by technology

[0004] The process of adding natural gas inside the first gas storage tank, the second gas storage tank and the third gas storage tank needs to be added due to the difference in the residual amount in the first gas storage tank, the second gas storage tank and the third gas storage tank The corresponding natural gas is different, and adding it at the same time is easy to cause danger. Manually replace the connecting pipe in order to add it, and the operation process is time-consuming and laborious, which affects work efficiency.

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