Internal floating roof oil tank sealing device of oil tanker

Abstract

The internal floating roof oil tank sealing device of the oil tanker, including the floating plate, the main seal, the telescopic rod and the suction cup. The sub-hollow rods of the telescopic rod are sleeved and connected to each other in sequence, and when the floating plate floats up, the sub-hollow rods below can gradually enter the sub-hollow rod of the upper section of the telescopic rod. The suction cup is fixed on the ring at the lower end of the spherical crown of the storage tank. The upper end of the uppermost section of the telescopic rod is divided into the hollow rod, and the upper end of the hollow rod is supported on the suction cup through the support plate and is fixedly connected with the suction cup. When the telescopic rod is extended to the maximum position, the bottom of the floating plate is suspended above the bottom of the storage tank; the inner side of the main seal and the outer side of the floating plate are always attached together; the outer side of the main seal and the tank side tank The inner sides of the walls are attached to each other. The invention can effectively prevent the excessive wear of the main seal and the rubber ring, has a simple structure, and is easy to install and manufacture.

Description

technical field [0001] The invention relates to an oil tank sealing device, in particular to an inner floating roof oil tank sealing device of a wharf oil tanker. Background technique [0002] Terminal oil tanker is a common oil storage equipment, which often uses internal floating roof oil tanks to store oil. The use of internal floating roof oil tanks to store oil involves a sealing problem. In fact, with the improvement of national environmental protection awareness year by year, higher and higher requirements for VOC emissions from storage tanks have been put forward, which has also promoted the rapid development of internal floating roof technology. The inner floating plate of the oil tank is relatively mature, and it is necessary to improve the edge sealing of the floating plate according to the tank cabin to ensure its stability and safety when applied to oil tankers. The sealing device used is required to be in close contact with the bulkhead plate and has no effec...

AI Technical Summary

Problems solved by technology

However, the floating discs of the two patents both have complex structures, and do not involve the connection relationship between the floating disc and the tank roof. The floating disc will not only cause the corresponding seals to encounter linear friction due to the up and down movement and swing. And the friction problem caused by extrusion deformation, it is also difficult to avoid the friction problem caused by the rotation movement of the back plate, thereby reducing the service life of the corresponding seal

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