CN212447121U

CN212447121U - Subway train activation circuit

Info

Publication number: CN212447121U
Application number: CN202021771830.1U
Authority: CN
Inventors: 孙洪庆; 陈姝
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2021-02-02
Anticipated expiration: 2030-08-22

Abstract

The utility model provides a subway vehicle train activation circuit, includes supplementary emergent starting switch, auxiliary power system and control negative line, non-permanent bus positive line, battery box, non-permanent bus negative line, train activation relay, and the battery box includes non-permanent bus control contactor, battery under-voltage relay, battery, its characterized in that: the main contact setting of non-permanent bus control contactor is in the middle of auxiliary power supply system and battery to the auxiliary contact of supplementary emergent starting switch is connected to between non-permanent bus control contactor coil and the battery under-voltage relay contact, the utility model provides a train lose direct current control power supply's puzzlement when non-permanent bus control contactor breaks down, improved the reliability of vehicle main line operation.

Description

Subway train activation circuit

Technical Field

The utility model belongs to subway transportation field, concretely relates to control circuit of subway vehicle train activation.

Background

The subway train is generally provided with a train non-permanent direct current bus and a train permanent direct current bus, wherein the non-permanent bus is used for supplying power to train direct current equipment after a train auxiliary power supply system is started, and the train permanent direct current bus provides a control power supply for train activation.

In the existing subway train activation control method, the integrity of a train and the power supply voltage of a train storage battery are detected by operating a train activation switch, a non-permanent bus control contactor of the train is controlled, and finally a starting power supply is provided for a train auxiliary power supply system. The main contact of the non-permanent bus control contactor of the current train is arranged between the auxiliary power supply system and the direct current load, and when the non-permanent bus control contactor fails in the operation process of the main line of the train, the train loses the direct current control power supply, and the train needs to be rescued, so that the operation efficiency of the main line is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel subway train activates DC power supply's control circuit guarantees still can continue the positive line operation when the non-permanent bus control contactor trouble of train when the positive line operation, improves the reliability of train operation.

In order to realize the utility model discloses the purpose, the utility model provides a control circuit of subway vehicle train activation, including supplementary emergent starting switch, auxiliary power system and control negative line, non-permanent generating line positive line, battery box, non-permanent generating line negative line, train activation relay, the battery box includes non-permanent generating line control contactor, battery under-voltage relay, battery, its characterized in that: the main contact of the non-permanent bus control contactor is arranged between the auxiliary power supply system and the storage battery, and the auxiliary contact of the auxiliary emergency starting switch is connected between the coil of the non-permanent bus control contactor and the contact of the undervoltage relay of the storage battery.

And further, the emergency starting switch also comprises two diodes, wherein a first diode is arranged between the coil of the non-permanent bus control contactor and the contact of the undervoltage relay of the storage battery, and an auxiliary contact of the auxiliary emergency starting switch is connected between the coil of the non-permanent bus control contactor and the first diode through a second diode.

The utility model discloses a set up non-permanent generating line control contactor main contact in the middle of auxiliary power supply system and battery to increase non-permanent generating line control contactor coil supply circuit of the same kind, under the condition that the battery is under-voltage, auxiliary system emergency starting power supply provides the power for non-permanent generating line control contactor coil, it is closed to realize contactor normally open contact, thereby guarantee auxiliary power supply gives the function of charging of battery, the puzzlement that the train lost direct current control power supply when having solved non-permanent generating line control contactor trouble, the reliability of vehicle main line operation has been improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein: 1-auxiliary contact of auxiliary emergency starting switch S01, 2-auxiliary power supply system control DC110V negative line, 3-DC110V non-permanent bus positive line, 4-DC110V permanent bus positive line, 5-storage battery, 6-DC110V non-permanent bus negative line, KM 01-non-permanent bus control contactor, K01-train activation relay, K02-storage battery under-voltage relay, S01-auxiliary emergency starting switch, VD 02-first diode, VD 03-second diode

Detailed Description

Referring to fig. 1, when the charger is started, a positive line 3 of a non-permanent bus of a DC110V is used for supplying power to a vehicle load, a storage battery directly supplies power to a positive line 4 of a permanent bus of a DC110V, a first diode VD02 is arranged between a coil of a non-permanent bus control contactor KM01 and a contact of an undervoltage relay K02 of the storage battery, and an auxiliary contact 1 of an auxiliary emergency starting switch is connected between the coil of the non-permanent bus control contactor and the first diode VD02 through a second diode VD 03. The KM01 coil is forcibly put into the battery under-voltage condition to control the KM01 coil to be electrified, a DC110V non-permanent bus negative line 6 provides a negative line loop for all DC110V loads of a vehicle, the battery 5 is used for providing a power supply when a train is activated and providing a power supply for emergency loads of the vehicle when a charger fails, a K02 coil of the battery under-voltage relay is powered by the battery and is controlled by a K01 state, a K01 contact is closed when the train is activated, a K02 detects whether the voltage of the battery meets the power supply requirement, the K02 contact is closed when the voltage meets the requirement, and the K02 contact is open when the voltage does not meet the requirement; the coil of the non-permanent bus control contactor KM01 is controlled by a K02 contact state, and the contact state can control whether the storage battery can supply power to the non-permanent bus or not and whether the storage battery can be charged by a charger (+ B end); the auxiliary emergency starting switch S01 is used for starting an emergency starting power supply in an auxiliary power supply system, and an auxiliary contact 1 of the auxiliary emergency starting switch S01 controls the conduction of a DC110V non-permanent bus positive line 3 and a KM01 coil which are forcibly put into conduction, so that power is supplied to the KM01 contactor coil.

The KM01 main contact is arranged between an auxiliary power system and a storage battery in the attached drawing 1, so that the train activating function can be realized, and the risk of losing direct-current power supply due to the fault of a non-permanent bus contactor is avoided. The specific control method comprises the following steps:

1) when the train activates, operation train activation button and detect the complete back of vehicle, train activation relay K01 normally open contact is closed, and it is normal that battery under-voltage relay K02 detects battery voltage, thereby K02's normally open contact closure KM01 coil gets the electricity main contact closed, and the battery is to the power supply of non-permanent bus to provide external control power supply for auxiliary power system, thereby realize train activation procedure.

2) If the storage battery has a power shortage phenomenon, when the train is activated and the voltage of the storage battery is detected to be lower than the discharge termination voltage by K02, the normally open contact of K02 cannot be closed, so that the KM01 coil cannot be powered; at this time, the auxiliary emergency starting switch S01 is pressed, the emergency starting function of the auxiliary power supply system is started, power is supplied to a non-permanent bus of the vehicle, the auxiliary power supply system also obtains an external control power supply, and at this time, the direct-current power supply of the vehicle is supplied to the KM01 coil through the auxiliary contact of S01, so that the KM01 main contact is closed. At the moment, the S01 switch is released, the auxiliary power supply system supplies power to the non-permanent bus, and meanwhile, the function of charging the storage battery with insufficient power is achieved, so that the train activation program is achieved.

Claims

1. The utility model provides a subway vehicle train activation circuit, includes supplementary emergent starting switch, auxiliary power system and control negative line, non-permanent bus positive line, battery box, non-permanent bus negative line, train activation relay, and the battery box includes non-permanent bus control contactor, battery under-voltage relay, battery, its characterized in that: the main contact of the non-permanent bus control contactor is arranged between the auxiliary power supply system and the storage battery, and the auxiliary contact of the auxiliary emergency starting switch is connected between the coil of the non-permanent bus control contactor and the contact of the undervoltage relay of the storage battery.

2. The railcar train activation circuit of claim 1, further comprising two diodes, wherein a first diode is disposed between the non-permanent bus control contactor coil and the undervoltage battery relay contact, and wherein the auxiliary contact of the auxiliary emergency start switch is connected between the non-permanent bus control contactor coil and the first diode through a second diode.