The invention discloses a liquid cargo tank anti-leakage device for a large
oil tanker. The liquid cargo tank anti-leakage device for the large
oil tanker comprises a liquid cargo tank; a liquid cargo tank room is arranged in the liquid cargo tank, and the liquid cargo tank room is composed of a
liquid storage tank, a liquid regulating box and an empty cavity chamber; a liquid separating valve is arranged between the
liquid storage tank and the liquid regulating box, and the liquid separating valve is connected with the
liquid storage tank and the liquid regulating box correspondingly through an infusion
pipe; the inner part of the
liquid storage tank is divided into a
gas phase layer and a
liquid phase layer; a protective cabin is arranged between the liquid cargo tank and the liquid cargo tank room; pressure sensors are arranged in the
gas phase layer, the empty cavity chamber, the protective cabin and the liquid regulating box correspondingly and are connected with each control device through
branch pipes, and finally connected with a pressure real-time
display device; and the pressure real-time
display device is connected with a
gas transmission device through a main
pipe, and the
gas transmission device is connected with an
inert gas generating device through a main
pipe. The liquid cargo tank anti-leakage device for a large
oil tanker has the advantages of being reasonable in structure and firmer,
safer in the tanker body structure, better preventing leakage and
safer.