RU64162U1 - PASSENGER WAGON WATER SUPPLY SYSTEM - Google Patents

Abstract

The invention relates to railway transport, and in particular to the design of water supply systems for passenger cars. The essence of the invention lies in the fact that the passenger carriage is equipped with a water supply system, the filling pipelines of which are equipped with safety devices consisting of an electromagnetic valve and an overpressure compensator made in the form of a small diameter bypass pipeline. The water supply system is equipped with a tank fill level sensor that transmits a command to close the valve of the electromagnetic safety device at maximum tank fill and a pressure sensor to duplicate the command to close the electromagnetic valve at critical pressures in the water supply system. The overflow pipeline is mounted next to the riser of the heating system pipe and have a common insulation shell along the length of the riser.

Description

The invention relates to railway transport, and in particular to the design of water supply systems for passenger cars.

A well-known water supply system for a passenger car designed by the Tver Car-Building Plant (non-compartment passenger car. Technical description and operating instructions. Kalinin. 1988 Oblipography, Fig. 35, p. 49). The water supply system is equipped with two bulk pipes with connecting heads with heating pipes from the bottom of the heating system. Bulk pipes are not equipped with devices to automatically turn off the water supply to the tank of the water supply system when it is full.

In cases of untimely shutdown of the station's water taps and overfilling of the tank with excess water inside the tank, an overflow pipe is provided through which water is drained under the wagon and the critical pressure inside the water supply system decreases.

However, at present, in order to reduce the time for refueling passenger trains, the station's water intake columns are equipped with powerful pumps that allow refueling at a pressure of 6 atm, which, if the station columns are untimely turned off, can lead to the destruction of the nodes of the water supply system.

The disadvantages of the analogue can also include:

- lack of devices to automatically turn off the water supply to the tank when it is full;

- large losses of drinking water discharged under the wagon through overflow pipelines.

A well-known water supply system for serial passenger railcars manufactured at the Tver Carriage Works (Tver Carriage Catalog), Tver) is equipped with a filling device U3-2-4 (operating instructions for MVII. 667442.003 RE approved by MVII. 407729.001 RE-LU).

The passenger car water supply system includes filling pipelines with connecting heads and

overflow pipeline. The filling device contains electromechanical taps (left and right), a drive control unit and an indication board. The supply of drinking water to the tank of the passenger car’s water supply system during its overflow is blocked by a ball valve with manual and automatic drive from an electric motor.

The refueling device is designed to automate the filling of the tank with the water supply system of the passenger car’s water system, and also controls the filling of the tank with water and provides operational information to maintenance personnel.

Electromechanical cranes (left and right) switch from open to closed and vice versa.

The drive control unit controls the drive of the electromechanical cranes and provides control of filling the tank level.

The complexity of the design of the drive of the electromechanical crane and the possibility of its jamming when small fractions in the water get on the spherical surface should be attributed to the disadvantages of the analogue.

As the closest analogue of the invention, a passenger car refueling system is known, protected by RF patent No. 22250170 for application No. 2002125328 of September 23, 2002.

The passenger car’s water supply system contains filling pipelines heated in the lower part of the car body, connecting heads and overflow pipe. It contains a receiving tank with a float valve fixed inside the fixed casing and a water spill line for passenger domestic needs. The intake tank filling line is equipped with an automatic shut-off valve with a membrane actuator of a poppet rubber spool.

The disadvantages of this refueling system include the fragility of the rubber spool of the diaphragm actuator, as well as the fact that during the actuation of the shut-off valve, the phenomenon of water hammer (a sharp increase in pressure) occurs, which negatively affects the filling station equipment and can lead to rupture of hoses, damage to pipelines and personal injury to personnel .

The objective of the invention is to simplify the design of the water supply system of a passenger car and increase the reliability of its operation when performing refueling.

The essence of the invention lies in the fact that the passenger car is equipped with a water supply system, the filling pipelines of which are equipped with safety devices consisting of an electromagnetic valve and a compensator

excess pressure made in the form of a bypass pipeline of small diameter. The water supply system is equipped with a tank fill level sensor that transmits a command to close the valve of the electromagnetic safety device at maximum tank fill and a pressure sensor to duplicate the command to close the electromagnetic valve at critical pressures in the water supply system. The overflow pipeline is mounted next to the riser of the heating system pipe and have a common insulation shell along the length of the riser.

The technical result achieved by the invention is to simplify the design, increase the reliability of water supply systems and refueling a passenger car, as well as ensure their operability during any period of operation.

The invention is illustrated by drawings, where:

figure 1 shows a diagram of a water supply and heating system of a car with a safety device;

figure 2 is a cross section of a passenger car with a tank and piping of the heating system and the overflow pipe of the water supply system;

figure 3 is a cross section of the riser of the heating system and the overflow pipe of the water supply system in the insulation shell.

The passenger carriage with water supply and heating systems contains a heating boiler 1 (Fig. 1), a collector 2 connected by supply pipelines 3 and 4 of the corridor and compartment sides of the heating network, risers 5 and 6 and return pipelines 7 and 8. Pipelines are connected to the supply tank 9 filling 10 and 11, equipped with safety devices, consisting of an electromagnetic valve 12, 13 and an overpressure compensator 14 and 15, made in the form of a bypass pipeline of small diameter.

At the ends of the filling pipelines 10 and 11, connecting heads 16 and 17 are installed with heating devices 18 and 19 located in the lower part of the car body connected to the heating network. Overflow pipe 20 is installed next to the riser 5 of the heating network pipe. The consumable tank 9 is equipped with a tank fill level sensor 21, which transmits a command to close the solenoid valve 12, 13 of the safety device at maximum tank filling and a pressure sensor 22, to duplicate the command to close the solenoid valve at critical pressures in the water supply system. The sensors are installed on the pipe 23 with the shutoff valve 24, the level sensor 21 is equipped with an air pipe 25. Overflow pipe 20 is mounted next to the riser 5 of the supply pipe of the heating system. Overflow pipe 20 and riser 5

the heating system supply pipes have a common insulation shell 26 (FIGS. 2 and 3) along the riser height.

Refueling the water supply system of a passenger car is as follows. Through one of the connecting heads 16 or 17, water from the station columns through filling pipelines 10 or 11 and open electromagnetic valves 12 or 13 are supplied to the consumable tank 9. The tank is monitored for filling the tank 21. When the tank 9 is full, the level sensor 21 issues a command to closing of electromagnetic valves 12 or 13 - instantaneous shut-off of the water supply to the consumable tank 9. With a sharp shut-off of the water supply, the phenomenon of water hammer is smoothed out by an overpressure compensator 14 or 15, made in the form of a removable pipe oprovoda small diameter which continues to leak into the tank from the station the column and thus reduces the magnitude of the overpressure from the station equipment. Replenishing the tank 9 with water through an overpressure compensator 14 or 15 will not be able to create a large overpressure inside the water supply system, as water will merge in a timely manner through the overflow pipeline 20 of a much larger diameter than the filling pipeline, protecting the nodes of the water supply and refueling systems from destruction.

For cases of failure of the level sensor 21, a pressure sensor 22 is introduced into the water supply system, which is designed to duplicate the command to close the electromagnetic valves 12 and 13 at critical pressures in the system, protecting the tanks from destruction.

In the winter operation of passenger cars, the connecting heads 16 and 17 are heated by devices 18 and 19 connected to the heating system. For additional heating, the overflow pipe 20 is mounted next to the riser 5 of the supply pipe of the heating system and is enclosed with it in a common shell where natural heat is removed, excluding the phenomenon of freezing of the pipeline.

Claims (6)

1. The water supply system of a passenger car, comprising filling pipelines heated in the lower part of the car body by devices connected to the heating system, connecting heads and an overflow pipe, characterized in that the filling pipelines are equipped with safety devices consisting of an electromagnetic valve and an overpressure compensator made in the form of a bypass pipeline of small diameter. 2. The water supply system of a passenger car according to claim 1, characterized in that the overpressure compensator is made in the form of a removable pipeline. 3. The water supply system of a passenger car according to claim 1, characterized in that it is equipped with a tank fill level sensor transmitting a command to close the valve of the electromagnetic safety device at maximum tank fill. 4. The water supply system of a passenger car according to claim 1, characterized in that it is equipped with a pressure sensor for duplicating the closing command of the electromagnetic valve at critical pressures in the water supply system. 5. The water supply system of the passenger car according to claim 1, characterized in that the overflow pipe is mounted next to the riser of the supply pipe of the heating system. 6. The water supply system of a passenger car according to claim 1, characterized in that the overflow pipe and the riser of the heating pipe have a common insulation shell along the height of the riser of the supply pipe.