High vacuum heat insulation low temperature liquefied gas storage tank

Abstract

A super-vacuum insulation tank for cryogenic liquefied gas comprises a framework; and a tank body including an outer shell, an inner vessel, and a combined support structure connecting the outer shell and inner vessel. The combined support structure is only provided between the dome ends of the out shell and inner vessel at both ends of the tank, which can bear the force in both radial and longitudinal direction. The conduction heating surface between the inner vessel and the outer shell is small, but the support structure can bear heavy load, and the effective shipment volume of the inner vessel is large.

Description

technical field [0001] The present invention relates to a low-temperature liquefied gas storage and transportation equipment, and more specifically relates to a high-vacuum heat-insulated low-temperature liquefied gas storage tank, which may be a tank truck or a tank container suitable for efficiently transporting low-temperature liquefied gas. The present invention realizes that the impact force and the temperature change of the carrier medium that the low-temperature liquefied gas storage and transportation equipment bears during the operation process meet the requirements of the low-temperature liquefied gas The requirements for storage and transportation, and the vacuum layer between the inner tank and the outer cylinder of the cryogenic container is the thinnest, and finally the loading rate of the cryogenic liquefied gas is maximized. The invention belongs to the field of cryogenic engineering and cryogenic technology. Background technique [0002] The vacuum-powder i...

AI Technical Summary

Problems solved by technology

Among the existing technologies, the upper and inner support structures of low-temperature storage tanks currently used at home and abroad include: 1) The heat-insulating pad structure between the inner tank and the outer shell, but it cannot effectively solve the problem of large heat leakage from the support due to the small distance between high-vacuum multi-layer heat insulation 2) The stainless steel casing structure between the inner and outer heads is difficult to manufacture, the distance between the inner and outer heads is large, and the impact resistance is poor. And the heat leakage is relatively large; 3) The structure of the suspension belt cannot effectively solve the problem of the decline in the impact resistance caused by thermal expansion and contraction; 4) The strong impact support structure of the low-temperature container of the utility model ZL00216678.X requires a large distance between the heads and When normal temperature turns to low temperature, the contact gap increases and the impact resistance level decreases

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