Track Loop Power Supply System

Abstract

The invention relates to the field of track traffic power supply and particularly discloses a power supply system for a track loop. Particularly, an integral insulation support is arranged nearby a vehicle walking track, and two contact tracks are installed on the integral insulation support and are a traction track and a backflow track respectively; two current collection boots are installed on an insulation base of a vehicle bogie and are a traction boot and a backflow boot respectively, the traction boot can be in contact with the traction track, and the backflow boot can be in contact withthe backflow track. Arc extinction mechanisms are arranged on the traction boot and the backflow boot, and when a vehicle runs, the arc extinction mechanisms can store energy of airflow; when the vehicle stops running and the current collection boots are not separated from the contact tracks, the arc extinction mechanisms cannot release energy; when the current collection boots are separated fromthe contact tracks, the airflow can be quickly discharged from air blowing holes, the period is also a crucial period of arc generation, the arcs can be quickly damped through the airflow, and the current collection boots and the contact tracks are prevented from being damaged.

Description

technical field [0001] The invention relates to the field of rail transit power supply, in particular to a rail loop power supply system. Background technique [0002] Existing urban rail transit traction power supply systems generally use running rails to achieve traction return. Since it is difficult to completely insulate the running rails from the ground, the traction current does not all flow back to the traction substation through the running rails, but part of it is The running rail leaks to the ground, and then flows back from the ground to the running rail and returns to the traction substation. This part of the current is the stray current. The existence of stray currents will cause electrochemical corrosion to the steel structure of the track bed of the urban rail transit line, the steel structure of the tunnel and the metal pipelines along the line, thus affecting the safety and service life of these structures and metal facilities. The current stray current cor...

AI Technical Summary

Problems solved by technology

Repeatedly, in the long-term operation process, due to the wear caused by the arc, the steel strip will produce scale-like wear marks, the entire surface of the steel strip will be uneven, and the local wear will be serious and even grooves will appear. At the same time, the end elbow and the The service life of the carbon skateboard of the collector shoe will affect the entire track loop power supply system, increasing the workload and cost of equipment maintenance

Images