Combined armour clamp

Abstract

The invention discloses a combined armour clamp comprising a connecting unit and two main tubes arranged at two ends of the connecting unit. The connecting unit includes two grading ring assemblies and a connecting member; each grading ring assembly is arranged at one end of each main tube and is used for realizing a uniform electric field; the grading ring assemblies include first circular rings,second circular rings, and a bracket for fixing the first circular ring and the second circular ring, wherein the first circular rings and the second circular rings are in closed states. The two grading ring assemblies have different heights in a direction perpendicular to the horizontal line. The connecting member that is used for connecting the two main tubes and enables the two main tubes to move in a horizontal direction by deformation includes at least two aluminum stranded wires; each aluminum stranded wire is bent and the two ends of each aluminum stranded wire are connected with the two main tubes; every two aluminum stranded wires are combined to form a vertical-infinite-symbol-shaped crossed structure and can be stretched freely. Therefore, flexible connection between converterstation equipment is realized, so that the converter station equipment does not lose the basic electrical performance.

Description

technical field [0001] The invention relates to the technical field of fittings, in particular to a combined fitting. Background technique [0002] Due to the characteristics of long-distance, large-capacity, low-loss power transmission and land resource saving, high-voltage direct current transmission has developed rapidly in my country in recent years. The converter station is a key part of the DC transmission project. The converter station is generally composed of a valve hall, an AC field and a DC field. It has a converter valve, a converter transformer, a wall bushing, a circuit breaker, an isolation switch, and a grounding switch. , Smoothing reactors, filter reactors, post insulators, surge arresters and transformers and many other equipment. All equipment in the valve hall, AC field and DC field are electrically connected through pipe nuts, fittings and connecting wires. For converter stations located in areas with high seismic intensity, under normal operating cond...

AI Technical Summary

Problems solved by technology

[0003] Under earthquake conditions, the equipment in the converter station will sway in different directions due to the seismic wave action and its own mechanical vibration characteristics, which will cause a large relative displacement between the equipment. At this time, the two equipment However, the distance between the two connecting ends of the pipe female fittings is basically unchanged, which leads to a large stress between the two connecting ends and the connected equipment, which is easy to damage the equipment or The corresponding equipment is disconnected, causing the valve hall to lose its basic electrical performance

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