RU2248611C2 - Device for switching and controlling two-filament lamps for traffic lights - Google Patents

Abstract

FIELD: traffic lights.

SUBSTANCE: device has power source, signal control relay, safety device, light relay, cable line, signal transformer, relay for switching to reserve filament and is additionally provided with light relay for controlling integrity of main filament of lamp, two capacitors, resistor and diode. To first pole of power source through safety device, light relay winding, first capacitor, signal relay contact first wire of line is connected. To second wire of line second pole of power source is connected. To end of line through second capacitor first and second input outputs of signal transformer are connected, and also a circuit is connected, consisting of serially connected frontal contact of relay for switching to reserve filament of resistor and diode. To first and second outputs of signal transformer through switching relay winding main lamp filament if connected. To third output of signal transformer through end contact of switching relay reserve filament of lamp is connected. To common contact of signal relay and second linear wire a winding of light relay of main filament integrity is connected.

EFFECT: higher effectiveness.

1 dwg

Description

The invention relates to the field of railway automation and telemechanics, in particular to devices for regulating the movement of trains.

A device for switching and control of double-stranded lamps of output traffic lights at local power [Petrov AF, Tseiko LP, Ivensky IM Schemes of electrical centralization of intermediate stations. - M .: Transport, 1987, p. 91-93].

The disadvantage of this scheme is the use of a relay cabinet at the output traffic lights.

There is also a device for switching and control of double-stranded lamps of output traffic lights [GTSS instruction of November 22, 1996 No. 1247/1361, code PR 89: On devices of switching and control double-stranded lamps of traffic lights PKU-M, author of the development Assoc. MIIT Zenkovich Yu.I.].

The disadvantages of this device are the lack of lamp control with a double voltage reduction, the high cost of PKU-M equipment, which excludes the use in new construction.

Closest to the technical nature of the claimed device is a device selected for use as a prototype for switching and monitoring double-strand lamps of output traffic lights with central power [Petrov AF, Tseiko LP, Ivensky IM Schemes of electrical centralization of intermediate stations. - M .: Transport, 1987, pp. 96-100, Fig. 54], containing the control circuit, cable conductors (for the main and backup threads for one core), signal transformers (for each thread for a transformer).

A disadvantage of the known device is a large cable consumption and a larger number of signal transformers.

The technical result to which this invention is directed is to reduce construction costs with a new design and the use of double-filament lamps during reconstruction without additional cable laying, as well as to increase the reliability of interval control devices for train movements.

The technical result is achieved by the fact that the device for switching and monitoring of double-stranded lamps of output traffic lights, containing a power source, a signal control relay, a fuse, a fire relay, a cable line, a signal transformer, a relay for switching to a backup thread, is additionally equipped with a fire relay for monitoring the integrity of the main thread of the lamp, two capacitors, a resistor and a diode, while to the first pole of the power source through a fuse, the coil of the fire relay, the first capacitor, the signal relay contact the first wire of the line is connected, the second pole of the power source is connected to the second wire of the line, the first and second input terminals of the signal transformer are connected to the end of the line through the second capacitor, and a circuit consisting of series-connected front contact of the relay switch to the backup thread, a resistor and a diode is connected , the main thread of the lamp is connected to the first and second output terminals of the signal transformer through the winding of the relay switch to the backup thread, to the third output terminal of the signal transformer nsformatora through rear contact relay switching to the standby thread connected backup lamp filament, and to a general alarm relay contact and a second line conductor connected to the relay winding fire warp yarn integrity.

The drawing shows a diagram of the inclusion of a two-filament lamp for a traffic light with one burning signal lamp.

The circuit contains a pole of a power source 1, connected to one pole of a fuse 2, to the second pole of which a first fire relay 3 is connected, to another pole of which, through a capacitor 4, one terminal of the coil of the fire relay 5 for monitoring the integrity of the main thread of the lamp and a common contact of the signal relay 6 are connected, the front contact of which is connected to the first linear wire 7, the end of which is connected to the second capacitor 8, the second pole of which is connected to the first input terminal of the first signal transformer 9, the second input the output terminal of which through the second line wire 10 is connected to the second pole of the power source 11 and the second terminal of the relay coil 5. To the first and second output terminals of the signal transformer 9 through the winding of the switching relay 12 is connected the main thread of the traffic light 13. The backup thread of the lamp is connected to the third output the output of the signal transformer through the rear contact of the switching relay 12.2. A series circuit consisting of a front contact of a relay 12.1, a resistor 14, and a diode 15 is connected to line wires 7 and 10.

The device operates as follows. With the excitation of the signal relay 6, a signal transformer 9 power circuit is created from the power source with poles 1 and 11 through elements 2, 3, 4, 6, 7, 8, and 10. The induced emf of the secondary winding creates the main current (left and right lamp leads 13) and backup (lower and right conclusions of the lamp 13) of the filaments of the lamp 13. In this case, the switching relay 12 is activated and by its contact 12.2 opens the circuit of the backup filament of the lamp 13. Another contact of this relay 12.1 closes the circuit of the diode 15 through the resistor 14, so that the fire relay 5 is excited thread integrity monitoring lamps. Fire relay 3 is also energized. Capacitors 4 and 8 exclude the shunting of the relay coil 5 by the supply windings (not shown in FIG. 1) and signal transformers. Without the mentioned capacitors, the excitation of relay 5 would not have been possible. Resistor 14 reduces the current of the diode. A switching relay (reed switch) 12 together with a signal transformer 9, a resistor 14 and a diode 15 are placed in the transformer box of the traffic light. Other devices, except for a traffic light, are located at the EC post. When the main thread of the lamp 13 burns out, the relay 12 is de-energized, which closes the backup thread circuit with one contact 12.2 and the diode 15 circuit with the other 12.1, so the fire relay 5 for the integrity control of the main thread of the lamp 13 is de-energized. Relay 12 continues to hold the armature until the backup lamp thread is intact 13. To avoid overstating the voltage on the backup lamp thread, it is connected only to part of the secondary winding of the transformer 9. The total voltage of the secondary winding is calculated under the condition that part of the voltage drops on the relay winding 12. Relay contacts 5 are used to inform the station duty officer about the burnout of the main thread of the lamp. In addition, relay contacts 3 and 5 can be used to control traffic lights. Due to the fact that a relay of a non-first reliability class can be used as a relay 12, it is necessary to take into account the consequences of a relay malfunction. If contact 12.2 does not open, then both threads of the lamp will burn, which does not lead to a dangerous situation. If contact 12.2 does not close, the backup thread will not burn and when the main burnout fails, both fire relays 3 and 5 will be de-energized, information will appear on the burnout of both threads, which also does not entail dangerous consequences. If the contact 12.1 is not closed with a working lamp, information about the burning of the main thread will appear. Non-opening contact 12.1 is most undesirable. In this case, there is no control of the burnout of the main thread. However, the signal indication at the traffic light is reliable and does not entail a dangerous situation. The presence of a resistor 14 minimizes the possibility of sintering of the contact 12.1.

The implementation of the proposed device provides significant material savings by reducing the number of cable cores used both in new construction and in the reconstruction of the station.

Claims (1)

A device for switching and monitoring double-output lamp output traffic lights, containing a power source, a signal control relay, a fuse, a fire relay, a cable line, a signal transformer, a relay for switching to a backup thread, characterized in that it is additionally equipped with a fire relay for monitoring the integrity of the main thread of the lamp, two capacitors, a resistor and a diode, while to the first pole of the power source through a fuse, the coil of the fire relay, the first capacitor, the signal relay contact is connected first line wire, the second pole of the power source is connected to the second wire of the line, the first and second input terminals of the signal transformer are connected to the end of the line through the second capacitor, and a circuit consisting of series-connected front contact of the relay switch to the backup thread, resistor and diode is connected to the first and second output terminals of the signal transformer through the winding of the relay switch to the backup thread connected to the main thread of the lamp, to the third output terminal of the signal transformer through rear relay contact switch connected to the standby thread reserve lamp filament, and to a general alarm relay contact and a second line conductor connected winding fire integrity monitoring relay warp yarn.