High pressure or middle pressure rotating connector

Abstract

The invention relates to high pressure swivel joint that comprises ring outward element and inner cylindrical element. The inner element and outward element include at least two axially-spaced electric conductors which can rotate with the corresponding inner element and outward element, the conductors are at least two pairs, they are set to contact surfaces which are contacted with each other. One of the pair of conductor is set on the inner element, the other is at the outward element, and every conductor is connected with the relative voltage line which is extended to the input end and output end, the conductor is surrounded by insulating materials. The electric conductor of the outward element is set in the rabbet of the ring solid outer insulation ring, the electric conductor of the inner element is set in the rabbet of the ring solid inner insulation ring, the inner insulation ring and the outer insulation ring are coaxial, and they separately limit the boundary surface which extends along the axial, the boundary surfaces of ring are closely adjacent, the contact surface of the electric conductor is at or near the boundary surface.

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 element is 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 element, the conductors form 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 ro...

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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