LNG double-metal full containment tank bottom cold insulation structure

By using high-strength foamed glass bricks and filling the outer tank wall with nitrile rubber in the LNG bimetallic full-containment tank, and by setting irregularly shaped glass bricks and arc plates at the hot corners for connection, the problems of frost formation and cold leakage at the bottom of the tank were solved, and a better cold insulation effect was achieved.

CN122107260APending Publication Date: 2026-05-29CHINA PETROLEUM ENG & CONSTR +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM ENG & CONSTR
Filing Date
2024-11-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Some LNG bimetallic full-containment tanks experience frost formation at the bottom during winter, affecting the normal use of the tanks. The existing hot corner protection structure also suffers from cold leakage.

Method used

High-strength foam glass bricks are used to fill the space between them and the outer tank wall panels with nitrile rubber. Irregularly shaped glass bricks are placed between the foam glass bricks and perlite concrete blocks to protect the hot corners. These spaces are sealed with polyurethane sealant. Curved plates are installed at the hot corners to increase the path of cold energy transfer and reduce cold energy loss.

Benefits of technology

It effectively reduces cold leakage at the bottom of the storage tank, ensures the cold insulation effect, avoids the failure of glass bricks due to thermal expansion and contraction, and enhances the cold insulation performance of the structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field, and particularly relates to a LNG double-metal full containment tank bottom cold insulation structure. The technical scheme is as follows: a LNG double-metal full containment tank bottom cold insulation structure, comprising an outer tank wall plate, high-strength foam glass bricks are constructed in the outer tank wall plate, and the high-strength foam glass bricks are filled with butadiene acrylonitrile rubber between the outer tank wall plate, the outer tank wall plate is further constructed with a heat angle protection foam glass brick, and the heat angle protection foam glass brick is constructed on the top of the high-strength foam glass brick; further comprising an inner tank wall plate, the bottom of the inner tank wall plate is provided with a perlite concrete block, a special-shaped glass brick is arranged in the annular space between the heat angle protection foam glass brick and the perlite concrete block, and the special-shaped glass brick is constructed on the top of the high-strength foam glass brick. The LNG double-metal full containment tank bottom cold insulation structure can effectively reduce cold leakage.
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