ES322063A1 - Storage tanks for liquids. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A tank for storing liquids, such as petroleum products, which includes an almost cylindrical vertical side wall, a floating roof placed in said tank and which includes an almost cylindrical vertical wall structure spaced radially inward of said side wall of the tank and which defines a practically annular space between them, which is characterized by a sealing mechanism for said annular space comprising an almost annular tubular envelope placed in said annular space and placed mainly above the level of the stored liquid, a means for fixing said envelope in the adjacent portion of said roof wall structure so that said shell is movable not said roof wall structure and with respect to said side wall of the tank, said shell is formed of a flexible non-metallic sheet-like material which is impermeable to the constituents of petroleum products and to water and air e, said enclosure includes an internal side wall that is along the outer surface of said roof wall structure and an external side wall that remains along the internal surface of said side wall of the tank and a bottom wall connecting the lower portions of said inner and outer side walls and a top wall extending between the upper portions of said inner and outer side walls, an annular body of a self-supporting elastic material of cellular structure enclosed by said shell and which it almost completely fills the same by means of which said envelope forms an external envelope for said body, said body extends between said internal and external lateral walls of the housing and constitutes an elastic cushioning that pushes said internal side wall of the enclosure in a sealed relation with said roof wall structure and pushing said outer side wall From the enclosure in sealed sealed relation with said tank side wall during both the vertical movements and the lateral movements of said roof wall structure with respect to said side wall of the tank, the material of said outer side wall of the enclosure is also highly resistant to prevent undue friction in its sliding movements in sealed coupling direct contact with said side wall of the tank, a plurality of braces carried by said roof wall structure in an annular formation and placed in circumferentially spaced relation with respect to each other said tie rods are secured with the upper portion of said side roof structure above said shell and project downwardly along said roof wall structure and toward said shell and between said inner side wall of the shell and said body , said braces terminate respectively po r the lower portions thereof in pieces placed between said shell and said body and adjacent to the joint between the lower portion of said inner side wall of the shell and the inner portion of said bottom wall of the shell, and a means including said straps to positively prevent said shell from marching up said sidewall of the tank and outwardly from said annular space inherently to the downward movement of said echo wall structure with respect to said side wall of the tank. (Machine-translation by Google Translate, not legally binding)