RU1799785C - Device for inspection toe-in of isolating joints - Google Patents

Abstract

Usage: in railway automation, in particular in numeric code auto-lock. SUMMARY OF THE INVENTION: the device has a control frequency receiver 14, and the comparison element has a comparative transformer 16, a capacitor 33, and a resistor 24. 1 sludge.

Description

The invention relates to railway automation devices and can be used in automated systems, namely, in code auto-blocking, to replace a circuit for converging joints, for monitoring insulating joints at signal points before level crossings, to prevent premature opening of a level crossing if they are damaged, and for monitoring insulating joints at the docking stations and railway rails.

The aim of the invention is to increase reliability.

The drawing shows a schematic diagram of a device for controlling the descent of insulating joints.

The device for controlling the gathering of insulating joints contains a control frequency generator 1, the output of which through a resistor 2 and a capacitor 3 is connected to the third winding of the output transformer 4, the second winding of which is connected through the compensation capacitor 5 and the capacitor 6 to the matching elements (isolation transformer 7 and inductor-transformer 8} and through them are connected to the rail line 9 on one side of the insulating joints 10, parallel to the capacitor b, connected in series to the rail power supply The main frequency circuit 11, the limiter 12 and the contact of the transmitter relay 13, the device also contains a control frequency receiver 14, the output of which includes an actuating relay 15 with contact 15.1, and the input is connected to the second winding of the comparator transformer 16, the first winding of which is through a compensation capacitor 17, protective block 18, the path filter 19 is connected to the matching elements (isolation trans-, formatter 20 and inductor-transformer 21) and through them is connected to the rail. line 22 on the other side of the insulating joints 10 and a third winding of which, through a capacitor 23 and a resistor 24, is connected to the first and second windings of the output transformer 4 in series, at the output of the path filter 19, the track receiver 25 of the rail circuit and through the poles CX 16 and the Mech generator are connected via the terminal 15.1 of the executive relay 15 and the control frequency receiver is connected to an AC power source.

The device operates as follows.

With healthy insulating joints 10, the control frequency signal from the generator

1 through a resistor 2, a capacitor 3, the second winding of the output transformer 4, capacitors 5 and 6, matching elements 7 and 9 are supplied to the rail line 9, and through the first and second windings of the output transformer 4, the capacitor 23 and the resistor 24 are connected to the third winding of the comparison transformer 16 and through its second winding to the input of the receiver of the control frequency 14,

. The actuating relay is energized and, by contact 15.1, it connects the track receiver 25 to the output of the path filter 19, Another contact (not shown in the drawing), the actuator relay can include a control circuit on the state of the insulating joints, through the contact of the transmitter relay to the rail line 9 main frequency signals are also supplied from the power source 11.-At the relay end of the rail line 9, as a result of natural attenuation, only the main frequency signals arrive. The sequential switching on of the signal sources of the main and control frequencies allows controlling the fall of the control frequency in the rail line 9. When the circuit breaks at the moment of joining, the signals of the main frequency simultaneously disappear, which eliminates a dangerous situation. Control

0 loss is carried out by the track receiver of the rail circuit 9. When the capacitor 6 is broken, the control frequency signals will be modulated by a numerical code and the executive relay will operate in a pulsed mode, which monitors its operability.

If any insulating junction (or both) is damaged, the control frequency signal from the rail line 9 through the inductor 0 transformer 21, the insulating transformer 20 enters the first winding of the comparison transformer 16. In this case, the phases and amplitudes of the signals in the first and third windings of trans5 of the transformer 16 are compared. If If the signals are correctly phased, then, due to the appropriate choice of device parameters, pro, the signal level at the input of the control frequency receiver decreases

0 below the release voltage of the actuating relay 15. Relay 15 is de-energized, disconnects the track receiver 25 and the control circuit of the health of the insulating joints. Sequential inclusion

5 of the first winding of the comparator transformer 16 and the equipment of the relay end of the rail circuit makes it possible to control the serviceability of the signal path of the control frequency. Violation of the path at the same time leads to de-energization of the track receiver 25, which gives control of its violation.

Capacitors 5 and 17 partially compensate the inductance of the windings of transformers 4 and 16 and reduce their input impedances on the side of the rail circuit equipment.

Claims (1)

SUMMARY OF THE INVENTION A device for controlling the descent of insulating joints, comprising a control frequency generator coupled via a matching unit to a signal source of a rail circuit, and a choke transformer connected to the rails on one side of the insulating joints, a comparison unit to which the output is connected an actuating element and one of the inputs of which, through the matching unit, is connected to the rails on the other side of the insulating joints, characterized in that, in order to increase reliability, it is equipped with an output isolation transformer, and the comparison unit contains a comparison transformer, capacitor and resistor, moreover, one and the other windings of the output isolation transformer are connected in series according to between the matching blocks and the signal source of the rail circuit, and successively counter to them through the resistor and capacitor, one of the windings is turned on, which forms the second input of the comparison unit, comparing the transformer, the other winding of which forms the output of the comparison unit, and the third winding connected opposite to the first, the first block input is formed.