RU96295U1 - PASSENGER WAGON ELECTRICITY SUPPLY DEVICE - Google Patents

Abstract

 1. A power supply device for a passenger car, located in a sub-car power cabinet for the car air conditioning system, with opening front doors and windows in the rear wall, in which cooling radiators are mounted with ribs outward, and with a flat surface inside the box, on which the structural modules of the voltage converter for power are mounted wagon consumers, characterized in that the radiators additionally contain the structural elements of the converter for the wagon battery charger GOVERNMENTAL batteries, namely, input rectifier, a filter, a high-frequency inverter, the transformer and rectifier, the latter being connected to the charging cable wagon battery and the voltage converter module to the power wagon consumers in the case of using an external source of industrial three-phase voltage 380 V, 50 Hz. ! 2. The low-voltage device according to claim 1, characterized in that the power rectifier of the car generator is additionally located in the cabinet. ! 3. The low-voltage device according to claim 1, characterized in that a device for connecting to an external source of three-phase voltage ~ 380 V, 50 Hz with a protective door equipped with a position lock is fixed in the side wall of the cabinet.

Description

The utility model relates to the electrical equipment of a railway passenger carriage and is a low-voltage device operating from a subcar generator during train movement or from an external industrial alternating current network ~ 380 V, 50 Hz during long-term parking. The device is intended for power supply of onboard consumers of a passenger carriage, including air conditioners, and for recharging carriage batteries. The device is structurally placed in a metal cabinet, which is mounted under the car.

The power supply system of modern passenger cars may include all or some of the electrical devices that supply and convert electricity from external power sources, for example:

a subcar (three-phase) generator driven by the axis of the wheel pair and a voltage regulator of this subcar generator,

accumulator battery;

high-voltage converter (when connected to the high-voltage contact network of the railway);

a low-voltage transformer that converts the voltage of an external three-phase network ~ 380 V, 50 Hz or the output voltage of the car generator to the desired level;

a rectifier that converts alternating voltage to direct;

low voltage converter for generating operating voltage loads.

The well-known structural embodiment of the power supply system of a passenger car used in Dneprovagonremstroy (http://dvrb.com.ua), provides for the presence of the following devices under the passenger car in the form of separate structural elements:

car generator;

rechargeable batteries;

subcar high-voltage hardware box;

high voltage static converter

step-down low-frequency large-sized transformer;

hardware subcar box for connecting the external voltage of a three-phase network 380 V, 50 Hz;

low voltage converter for generating supply voltages for wagon consumers.

This system provides the ability to convert energy for wagon consumers upon receipt of external power from all known sources:

contact railway network, industrial AC mains voltage, car generator, batteries.

To supply passenger cars that do not use a connection to a high-voltage contact network, but only the voltage of the car generator during the train and the external three-phase network ~ 380 V, 50 Hz in the parking lots, at least three car dimensions are required, namely:

low-voltage transformer with a device for connecting to an external three-phase network ~ 380 V, 50 Hz;

a rectifier with a device for connecting either to the car generator or to a low-voltage transformer,

low-voltage converter for forming power supply for wagon consumers.

Known utility model "Power supply for the air conditioning system of passenger cars" - RU No. 31075. This device is designed to operate as part of the passenger carriage life support equipment complex as a low-voltage converter for power supply of carriage consumers.

The power source is made in the form of a metal cabinet of rectangular elongated shape. Its rear wall has windows in which radiators are fixed with the ribbed side out. Inside the cabinet, on the flat surfaces of the radiators, removable modules are mounted that contain the circuit elements of a static converter that provides the formation of the required types of power for the air conditioning system and / or other wagon consumers. The device also contains boards without power elements, which are mounted on separate racks in front of the power elements with the possibility of rotation to provide access to the power modules if necessary.

The design of the utility model makes it possible to use it in the form of a carriage device, while providing ease of maintenance and repair.

The disadvantage of the prototype is the limited use due to the use only for the supply of wagon consumers, mainly air conditioners.

Utility Model Disclosure

The essence of the claimed utility model is to create a single low-voltage power supply device for a railroad car, combining the functions of a power source for railroad consumers with the function of charging batteries. The design also provides for placement inside the cabinet of power elements for controlling the car generator. The utility model can operate both from wagon power sources and from a three-phase industrial network ~ 380 V, 50 Hz, for example, when parked in a depot.

The power supply device for the passenger car is located in a metal cabinet that can be mounted under the car. The device serves to power carriage energy consumers, including the car's air conditioning system, as well as to charge batteries. The cabinet contains opening front doors. Windows are cut in the rear wall, in which cooling radiators are fixed with ribs out. Inside the box on the radiators are fixed structural modules containing the power elements of the voltage converter, which serves to form the power supply for wagon consumers. In addition to these modules, elements of another device are also located on the radiators - a voltage converter for the charger for car batteries (abbreviated as AB), which contains the following units: input rectifier, filter, high-frequency inverter, high-frequency transformer and output rectifier. This chain works when the cabinet is connected to an external three-phase power supply in the depot. Moreover, one of the outputs of the output rectifier is designed to supply voltage to the battery, while others can serve as power sources for various wagon consumers. In the side wall of the cabinet there are holes with nozzles through which you can use cables to connect to external devices located outside the cabinet.

In addition, power elements of the rectifier of the car generator can be placed in this undercar cabinet.

The technical solution that eliminates the need for a large-sized low-frequency transformer when connected to a three-phase voltage of ~ 380 V in the depot when generating the required supply voltage for various car consumers, as well as for the battery charger of the car, provides a significant reduction in the overall dimensions of the car devices.

Placing a power element inside the cabinet associated with the conversion of voltage of the car generator provides a reduction in the number of units of car elements.

In addition, in the side wall of the cabinet there is a constructive device for connecting to an external source of three-phase voltage ~ 380 V, 50 Hz, made in the form of a connector with a protective door, equipped with a position lock. The door is tightly closed during the train and locked in the open position when connected to a source of external industrial network in the depot. This improves the operating conditions of the power supply device of the passenger car.

Description of graphic figures

Figure 1 shows the appearance of a closed wagon cabinet with a connector for connecting to an external three-phase network ~ 380 V in the lower part of the right side wall.

Figure 2 shows the constructive placement of the internal elements of the power supply device of the passenger car on radiators fixed in the windows of the rear wall of the cabinet (front doors of the cabinet are removed).

Utility Model Implementation

The low-voltage power supply device of the passenger car is located in a metal cabinet 1, containing opening front doors 2 and windows in the rear wall of the cabinet. Cooling radiators are fixed in the windows with 3-6 ribs outward, with a flat surface inward. Structural modules 7 are included on the radiators 3.4, which are part of the voltage converter for supplying wagon consumers. On the radiator 5 there is a converter for a car battery charger, including an input rectifier 8, a filter 9, a high-frequency inverter 10, a transformer 11 and an output rectifier 12, one of the outputs of which can be connected to the batteries with a cable passed through one of the pipes (13-16 ) in the wall of the cabinet 1, and others - internal connections - with the corresponding voltage converter blocks for supplying wagon consumers, located on the radiators 3.4. The utility model is connected to an external source of three-phase voltage ~ 380 V / 50 Hz through a connecting device 17. This connecting device is equipped with a protective door 18, which is locked in the open position when the cabinet is powered from an external three-phase network and is closed when powered from other sources of car power supply. On the radiator 6 there are elements 19 that are part of the device for converting the output voltage of the car generator, cable communication with which is carried out through one of the pipes (13-16) in the side wall of the cabinet 1. On a vertical rack 20, located in the middle of the cabinet perpendicular to the plane of the radiators, can be placed other elements 21 of the circuit and fans 22 for forced cooling of the heating modules.

The claimed technical solution provides the following advantages:

- expanding the functionality of the power supply device for a passenger carriage by introducing structural elements that ensure the full functioning of all carriage consumers using various external power sources;

- reduction of the overall weight and size indicators of the carriage devices;

- improving the operating conditions of the subcar power supply device of a passenger car;

- simplification of maintenance and repair due to compact placement in one car cabinet of three functional blocks instead of one.

As an example of a specific embodiment of the power supply device for passenger vehicles, we can cite the static converter ПЧ-24-01 developed by the authors.

The metal cabinet 1 is made of steel.

Radiators 3-6 are made of aluminum alloy type AD-31.

On the radiators 3 and 4 there are power modules mounted on the KPT-8 heat-conducting paste for a more snug fit and improved heat transfer.

On the radiator 5 on the same paste, a rectifier 8 was mounted on thyristor modules of the MTT-160-12-62 type.

Filter 9 consists of capacitors of the ERWE-401-LGC682 type.

A transistor-diode module SKM 300 IB 124D is used as a high-frequency inverter.

In the lower part of the radiator 5, a high-frequency transformer 11 is installed, made of a high-frequency winding wire on a U-shaped ferrite core, filled with a PK-68 compound.

The output rectifier 12 is made according to the scheme of the diode bridge type M2DCH2.

The controls of the subcar generator include an input rectifier based on diode modules MDD 320-12.

On the side wall on the right there are nozzles through which the cable connection of the power supply device to the external devices of the car is carried out.

The connector 17 is closed by a cover 18 of a rectangular shape made of steel. The cover is equipped with a snap-on steel holder.

The ПЧ-24-01 static converter is intended for use on passenger cars as a power source for all on-board consumers, including air conditioners, and also for recharging car batteries.

Claims (3)

1. A power supply device for a passenger car, located in a sub-car power cabinet for the car air conditioning system, with opening front doors and windows in the rear wall, in which cooling radiators are mounted with ribs outward, and with a flat surface inside the box, on which the structural modules of the voltage converter for power are mounted wagon consumers, characterized in that the radiators additionally contain the structural elements of the converter for the wagon battery charger GOVERNMENTAL batteries, namely, input rectifier, a filter, a high-frequency inverter, the transformer and rectifier, the latter being connected to the charging cable wagon battery and the voltage converter module to the power wagon consumers in the case of using an external source of industrial three-phase voltage 380 V, 50 Hz. 2. The low-voltage device according to claim 1, characterized in that the power rectifier of the car generator is additionally located in the cabinet. 3. The low-voltage device according to claim 1, characterized in that a device for connecting to an external source of three-phase voltage ~ 380 V, 50 Hz with a protective door equipped with a position lock is fixed in the side wall of the cabinet.