A pressure-equalizing ring fitting

Abstract

The invention discloses a pressure-equalizing ring fitting, which is characterized in that the fitting comprises a connecting unit and two pipe mothers arranged at two ends of the connecting unit. Theconnecting unit comprises two pressure-equalizing ring assemblies and a connecting piece. The voltage equalizing ring assembly is arranged at one end of the pipe mother, and the voltage equalizing ring assembly is used for uniforming an electric field; The pressure equalizing ring assembly includes a first pressure equalizing ring, a second pressure equalizing ring and a bracket for fixing the first pressure equalizing ring and the second pressure equalizing ring, wherein the first pressure equalizing ring and the second pressure equalizing ring are provided with openings at positions adjacent to the connector; The connector is used for connecting the two tube masters, and the connector can allow the two tube masters to move in the horizontal direction by deformation; The connector comprises at least two current-carrying leads, each current-carrying lead is in a curved shape, two tube buses are respectively connected at two ends of each current-carrying lead, and the current-carryingleads can be freely stretched. By adopting the embodiment of the invention, the flexible connection between the equipment can be realized, so as to ensure that the equipment of the converter station does not lose its basic electric performance.

Description

technical field [0001] The invention relates to the technical field of fittings, in particular to a fitting for a pressure equalizing ring. 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, support insulators, lightning 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 a converter station in a high seismic intensity area, under nor...

AI Technical Summary

Problems solved by technology

[0003] Under earthquake conditions, the equipment in the converter station will swing 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 Corresponding equipment is disconnected, causing the converter station to lose its basic electrical performance

Images