SU998154A1 - Device for electric power supply to passenger train supplemental equipment - Google Patents

Description

(54) DEVICE FOR SUPPLYING ELECTRICITY TO ACCESSORIES OF PASSENGER

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The invention relates to electrified rail transport, in particular, devices for supplying electric power to auxiliary equipment of passenger trains, and may be around motor-car electric trains, diesel trains and passenger trains with locomotive traction, equipped with a centralized source of electricity.

A device for power supply to auxiliary equipment of a passenger train is known, which contains a time relay with closing contacts through one of which the auxiliary equipment of this car is connected to the train power wires in each car, and the train control wire connected in the head cars to the power source through control buttons connected to the coils of time 1.

The disadvantage of this device is that it simultaneously connects all the equipment to the power source, which leads to a dynamic overload of the source and reduce the reliability of the device.

TRAIN

The aim of the invention is to increase reliability.

This goal is achieved by the fact that the device is equipped with separation diodes, which in each car are connected in pairs into the train control wire and shunted by other closing contacts of the corresponding time relay, while the cathodes of the diodes are connected to each other and the Q time relay is indicated.

The drawing shows an electrical schematic diagram of the proposed device for a two-car train.

Each passenger train carriage contains a time relay 1, the closing time of cycle 1.1 of which is connected between one output of auxiliary equipment 2 and the power supply train wire 3. The other train power supply wire 4 is connected to another pin of auxiliary equipment 2 and to relay 1 directly. Train

20, the control wire 5 is connected to the buttons 6 with the train power supply wire 3. In each car, diodes 7 and 8 connected to each other and to relay 1 are connected to the cutting of the control wire 5. Diodes 7 and 8

shunted by other closing contacts 1.2 time relay 1. Safety switches 9 and 10 can be included in the coil circuit of the I time relay and in parallel with its contacts 1-.2.

The device works as follows.

In the initial state, all buttons 6 are turned off. At the same time, there is no voltage on wire 5, all relays 1 are de-energized and auxiliary equipment 2 is disconnected from the source. All switches 9 are closed, and switches 10 are open.

When button 6 is turned on in any of the control cabins of the head cars, for example, in the left car, the electrical voltage from wire 3 enters the corresponding section of wire 5 and through diode 7 to the winding of relay 1. Diode 8 prevents further voltage propagation through wire 1 closest to the included button 6.

With a time delay of 0.1-2, relay 1 triggers, including contacts 7.1, the corresponding auxiliary equipment 2 and contacts 1.2 applying voltage to the next section of the train wire 5. Similarly, with the same time delay, the next relay 1 is activated, including the auxiliary equipment 2 of its carriage and applying voltage to the next section of the wire bits. until the auxiliary equipment of all 2 wagons of the train is switched on.

The device works similarly when the button b is turned on at the other end of the train. The gradual (alternate) switching on of equipment 2 significantly reduces the resulting starting current consumed from a source (not shown) that is connected to wires 3 and 4.

In addition, when the auxiliary equipment 2 is gradually switched on, it is possible to control its operability using an ammeter connected to the source circuit (not shown). This is done by registering the next current increment (visually or by a recorder). The absence of increments indicates a break in the electrical circuit of the load, the increment is less than the normative — that of a break in the load section. The setting of relay 1 is selected based on the duration of the starting load period (for lighting circuits 0.05-0.1 s, for 31 motors 2-3 s). Switch 9 is turned off, and switch 10 is turned on when a relay 1 or auxiliary equipment 2 fails in the corresponding car.

The effectiveness of the proposed device is provided by reducing the starting currents of the source and the oscillatory processes caused by them, as well as the ability to control the auxiliary load circuit.

trains, and therefore an increase in the reliability of energy supply.

Claims (1)

Invention Formula A device for power supply to auxiliary equipment of a passenger train, containing a time relay with closing contacts, through one of which the auxiliary equipment of this car is connected to the train power wires in each car, and the train control wire connected in the head cars to the power source through control buttons connected to the coils of a time relay, characterized in that, in order to increase reliability, it is equipped with separation diodes, which in each car are connected in pairs to cut the train control wire and by other closing contacts of the corresponding time relay, while the cathodes are connected to each other and to the coil terminal of the specified time relay. Sources of information taken into account during the examination 1. A. Mikhaylenko. Diesel trains DR1, DR1A, DRSh. M., “Transport, 1979, fig. 4, s. 10-17 (prototype).