A central drainpipe assembly with a counterweight

Abstract

The invention discloses a central drainage pipe assembly with a counterweight. Including the joint (1), especially the hose (2) connected to the joint (1), from the inside to the outside, from the inner rubber layer (3), the inner rubber cloth layer (4), the high-strength spring steel wire reinforcement layer (5), the outer rubber cloth layer (6), an outer rubber layer (7) and an outer protective layer (8), and the hose (2) is provided with at least one rod-type weight offset from the axis of the hose. The invention has a uniquely designed rod-type counterweight that deviates from the hose axis, so that the repeated bending and retracting of the drainage hose during the repeated lifting and lowering process with the outer floating roof has basically the same running track, and the service life of the hose is greatly improved.

Description

Technical field: [0001] The invention relates to the technical field of rubber hoses, in particular to a central drainage assembly with a specific performance on the outer floating roof of a petroleum oil storage tank. Background technique: [0002] In recent years, with the continuous growth of oil demand and reserves, my country's crude oil storage and transportation equipment has been promoted to localization and large-scale development. The external floating roof oil tank is a widely used oil storage container in petrochemical enterprises. The upper part of the oil tank is It is open and has a floating roof. Rain and snow fall directly on its outer surface. In order to prevent rain and snow from penetrating into the oil tank from the seal of the pontoon (roof) or threatening the pontoon (roof), a special drainage mechanism must be set up, commonly known as Floating roof central drainage system or central drain. Since the above-mentioned drainage system is located inside t...

AI Technical Summary

Problems solved by technology

Since the above-mentioned drainage system is located inside the oil tank, it cannot be detected normally, and it is difficult to monitor during production and operation. Once the leakage of the drainage system occurs, it cannot be repaired in time. At this time, the oil will flow into the drainage system and pollute the environment and may cause serious damage. security risks

At present, there are many devices for the central drainage hose assembly at home and abroad, such as setting a more complicated support system on the floating roof to realize the connection between the drainage hose and the floating roof, so as to ensure the floating displacement of the drainage hose and the floating roof. During the long-term use of the oil tank, with the repeated up and down displacement of the floating roof, the drain hose will also be stretched repeatedly, so there may be damage caused by wear and bending, and there will be stress between the drain hose and the connectors at both ends. At the same time, long-term immersion of the drainage hose in oil will also cause corrosion problems, and the displacement track of the drainage hose during the repeated up and down displacement process will also have irregular problems, which will increase the damage of the drainage hose or local cracks.

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