SU1020278A1 - Apparatus for switching-on excitation of diesel locomotive generator and engines - Google Patents

Description

The invention relates to transport, or rather to devices for controlling the starting of diesel locomotives, and can be used in diesel locomotives equipped with a rotary driver with a pathogen in the excitation system of a traction generator. .

A device is known for switching on the excitation of a generator and a diesel locomotive engine, comprising a starting contactor, the winding of which is connected to a power source through one of the closing contacts of a time relay, one of the driver controller contacts connected one after the safety devices, is connected to the power supply circuit of the icoToporo winding. from the contacts of the generator exciter and exciter contactor and the intermediate relay

A disadvantage of the known device is that the contactors of excitation of the generator and excitation of the exciter when protective devices, for example, the earthing relay, are turned off at the same time, lead to a sharp decrease in the load of the generator and, as a result, incomplete combustion of fuel in a diesel engine and collision of cars in a train.

The purpose of the invention is to increase the smoothness of the generator load change.

The goal is achieved by the fact that in the device containing the starting contactor, the winding of which is connected to the power source through one of the contacts of the time relay, one of the contactor contacts is connected to the winding power supply circuit of which is connected in series with the contacts of the protective devices. excitation of the generator. and excitation of the exciter and intermediate relay, other closing contacts of the relay are inserted into the power supply circuit of the winding of the generator excitation contactor and the closing contacts of the starting contactor, the other closing contacts of the generator exciter contactor are connected in parallel to one time relay contact, and still others in series with the other contacts of the driver controller and one contact of the intermediate relay in the exciter contactor winding power supply circuit, while the intermediate relay winding is connected in series with contacts of protective devices, and its other contacts are connected in parallel to other contacts of the driver’s controller.

FIG. 1 is an electrical schematic diagram of the device proposed; in fig. 2 is an electrical circuit for switching the main contacts of contactors into the power circuits of a locomotive.

. The device (Fig. 1) contains a starting contactor 1 with contacts 11 and 12, a contactor 2 that excites a generator with contacts 2.1, 2.2 and 2.3 and an excitation contactor 3 with contacts 3.1. Time relay 4 is connected to the power source 5 through one and the other pins 6.1 and 6.2 of the driver controller (not shown). Contacts 4.1 and 4.2 relays 4 times are included respectively in the supply circuit of the coils of contactors

5 1 and 2. Intermediate relay 7 is connected to the source 5 through contacts 6.1, 6.2 of the driver’s 5oller contact, contacts 2.3 of contactor 2 and contacts 8, 9 and 10 of protection devices (on

Fig. 1 is not shown); Contacts 7.1 and 7.2 of the relay 7 are included respectively in the supply circuits of the contactor 3 and relay 4.

Main pins 1.1, 1.2 and 1.3

(FIG. 2) contactors 1, 2 and 3 are respectively connected to the traction motor 11, excitation of the generator 12 and excitation of the exciter 13. The excitation power of the exciter 13 is supplied from the source 14 of the pi-

0 tannin. One of the protective devices 15 (grounding relay), the contacts 8 of which (FIG. 1) are connected to the relay circuit 7, is connected to the generator 12 and the housing 16 of the locomotive.

5 The device operates as follows.

When the diesel locomotive is started, the driver’s control operator is moved to the first position and, through its closing

b contacts 6.1 and contacts 6.2 closed at the zero and first position power is supplied to the relay for 4 times. The contacts 4.1 and 4.2 of the relay 4 time as well as the contacts 1,2, 2,3 and 7.1 allow switching on the starting contactor 1, the contactor 2 of the generator and the intermediate relay 7 and the exciter contactor 3 alternately. During the turn-on time of these devices and due to the residual magnetization of the generator 11 and the exciter 13, the current of the engine 11 increases smoothly and allows you to select gaps in the gearbox transmission wheelset before powering the activator 13

5 from source 14. Further, the acceleration of the locomotive occurs due to a change in the voltage of the power source 14.

When a protective device is activated, for example, a ground relay 15,

0, there is a supply circuit for the intermediate relay 7, which disconnects the power supply to the exciter excitation contactor 3 and the time relay 4. The exciter excitation current declines, which leads to a gradual decrease in the load of generator 12 when contacts 1.2 and 1.1 of contactors 2 and 1 are closed. With time delay, contacts and 4.2 relay of 4 times are opened, which leads to alternating disconnection of generator excitation contactor and starting contactor 1 The fuel regulator monitors the reduction of diesel, which leads to more complete combustion.

: fuels, and a smoother load. To reduce the dynamic effect of cars in a train.

The technical and economic effect from the introduction of the proposed device consists in the reduction of diesel fuel and an increase in the service of coupling devices of the rolling stock.

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Claims (1)

DEVICE FOR TURNING ON EXCITATION OF THE GENERATOR AND DIESEL ENGINE ENGINES, containing a starting contactor, the winding of which is connected to the power supply * through one of the closing contacts of the time relay, one of the driver’s controller contacts connected in series with the protective devices contacts, one of generator contactor contacts The exciter judgments and the intermediate relay are characterized in that, in order to increase the smoothness of the generator load change, other closing contacts of the time relay and closing contacts of the starting contactor are included in the power circuit of the coil of the generator excitation contactor, other closing contacts of the generator excitation contactor are connected in parallel with one relay contact time, and the third - in series with other contacts of the controller of the driver and one contact of the intermediate relay in the power supply circuit of the coil of the contactor exciter zhdo-. exciter, while the winding I of the intermediate relay is switched on sequentially I with the protective contacts an-I. paraths, and its other contacts are switched on in parallel with other contacts of the driver's controller I. 'and maybe-> !