SU1507632A1 - Arrangement for passing traction current through track circuit - Google Patents

Abstract

The invention relates to railway automation and can be applied to equip rail circuits. The purpose of the invention is to increase reliability. The goal is achieved by connecting an adjustable reactor 4 shunted by capacitor 5 between the start of the additional winding 2 and the end of the main winding 1. At the frequency of the traveling source, an oscillating circuit consisting of a reactor and a capacitor forms a two-pole with high resistance, and the current induced in the circuit , is equal to zero due to the opposite of EMF in the reactor winding. 1 il.

Description

(/)

The invention relates to railway automation and can be applied to equip rail prices.

The purpose of the invention - improving reliability.

The drawing shows a diagram of the device.

The device contains a main winding 1 with a branch from the middle turn, additional windings 2 and 3, an adjusting reactor 4 connected in parallel to capacitor 5 and connected between the beginning of winding 2 and the end of the main winding 1, and windings 1-3 are placed on a common magnetic circuit 6.

The device works as follows.

If the turns of the main 1 and additional 2 windings satisfy the relation

15

where w

about

Wo GI „Rr

Ro

 + R

R

(one)

25

RO 5

Rr, respectively, the number of turns of the main and secondary windings; 20 respectively, the resistance of the main, additional windings and reactor, the magnetic fluxes caused by the flow through the main and additional windings of the current in the rail line compensate each other. In this case, the resistance is proportional to the number of turns of the corresponding windings and the reactor.

Pa and the compensation winding can provide the required voltage transfer ratio of the signal current from winding 1 to winding 3. When the reactor 4 is bridged by a capacitor, the frequency of this circuit is equal to the frequency of the signal current and the main resistance, the additional windings and the reactor satisfy the indicated. The relation (1) for a case with a capacitor causes THAT magnetic fluxes caused by the flow of current through the main and additional windings with the reactor, due to the asymmetry of the rail line, compensate each other, - If in a known device the relative change in capacitance is iyX / CXg-X .), where KC is capacitive resistance, X p is inductive resistance, iX is the relative change in capacitance, then in this device the relative change in capacitance is equal.

Taking into account that - Xp at the frequency of the signal current, the relative change in the resistance of the capacitor, and hence the detuning of the resonance, is substantially less than that of the known device.

Claims (1)

1. A device for passing a current through a rail line, containing a main winding placed on a common magnetic conductor, a winding with a branch from the middle turn and additional windings, the beginning and the end of one of which are connected respectively with the end and the beginning of the main winding, characterized in that, in order to increase reliability, it is equipped with an adjustable reactor core, one of the terminals of which is connected to the beginning of the first additional winding, the other to the end of the main winding. 2, the device according to claim 1, about a tl and - in that a parallel-to-40 controlled-reactor capacitor is connected. Compiled by V. Skorikov Tehred M. Khodanich Proofreader T. Malets 45 50 0 five 0 five 0 Pa and the compensation winding can provide the required voltage transfer ratio of the signal current from winding 1 to winding 3. When the reactor 4 is bridged by a capacitor, the frequency of this circuit is equal to the frequency of the signal current and the main resistance, the additional windings and the reactor satisfy the indicated. The relation (1) for a case with a capacitor causes THAT magnetic fluxes caused by the flow of current through the main and additional windings with the reactor, due to the asymmetry of the rail line, compensate each other, - If in a known device the relative change in capacitance is iyX / CXg-X .), where KC is capacitive resistance, X p is inductive resistance, iX is the relative change in capacitance, then in this device the relative change in capacitance is equal. Taking into account that - Xp at the frequency of the signal current, the relative change in the resistance of the capacitor, and hence the detuning of the resonance, is substantially less than that of the known device. Invention Formula