High pressure or middle pressure rotating connector and marine structure

Abstract

The present invention relates to a high pressure swivel comprising an annular outer element and an inner cylindrical element. The inboard and outboard elements each include at least two axially spaced electrical conductors rotatable with the respective inboard and outboard elements, the conductors forming at least two pairs positioned to have contact surfaces in electrical contact with each other. One conductor in each pair is provided on the inner element and the other on the outer element, and each conductor is connected to a respective voltage line extending to an input terminal and an output terminal respectively, the conductors being surrounded by insulating material. The electrical conductor of the outer element is arranged in a recess located in the outer insulating ring of the annular entity, and the electrical conductor of the inner element is arranged in a recess located in the inner insulating ring of the annular entity, the inner insulating ring is coaxial with the outer insulating ring, and the inner and outer insulating rings Axially extending boundary surfaces are respectively defined, the boundary surfaces of the rings are closely adjacent to each other, and the contact surfaces of the electrical conductors are located at or close to the boundary surfaces.

Description

technical field [0001] The present invention relates to a high pressure swivel comprising an annular outer member defining a cylindrical chamber around a longitudinal axis and an inner cylindrical member coaxial with said outer member and relative to said outer member about said longitudinal axis. The outer elements are rotatable, the inner and outer elements each comprise at least two axially spaced electrical conductors, the conductors are rotatable with the respective inner and outer elements, the conductors are at least two pairs arranged to have The contact surfaces are in electrical contact with each other, one conductor in each pair is provided on the inner member and the other conductor is located on the outer member, and the conductors are connected to the respective conductors extending to the input terminal and the output terminal. Corresponding to the voltage line, the conductor is surrounded by insulating material. The invention also relates to a medium pressure ...

AI Technical Summary

Problems solved by technology

[0003] The known rotary joints have the disadvantage that the dielectric oil can be contaminated by particles arising from the carbon brushes during wear

Accordingly, the maximum voltage that can be delivered by the rotary joint is limited

[0004] Furthermore, the use of flow-through dielectric insulators in the known rotary joints is relatively complex and requires an additional fluid-tight design of the pump and bearings, while at the same time limiting the maximum voltage transmitted by the rotary joints

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