RU2250170C2 - Passenger car water-filling system - Google Patents

Abstract

FIELD: railway transport; passenger car water supply system.

SUBSTANCE: proposed system contains receiving tank 1 mounted in upper part of car body with float valve secured inside in fixed case, and main lines for dispensing water for needs of passengers and for fire fighting. Capacity of receiving tank is sufficient to satisfy demands of passengers and for fire fighting. Receiving tank filling main line is furnished with automatic shutoff valve 8 with diaphragm drive of plate rubber slide valve. Float valve 3 and water pressure relay transmitter 5 are rigidly secured on signal pipe of system.

EFFECT: improved reliability.

2 cl, 3 dwg

Description

The invention relates to railway maintenance facilities, in particular to means for supplying water to passenger trains.

There is a known system for refueling a passenger car mod.61-4177 developed by the Tver Carriage Works, RF (catalog of the Tver carriage plant, quality indicators of passenger cars mod.61-4177, information is also available on the website www.tvz.ru). It provides for the presence of two tanks, one of which with a capacity of 1000 l is designed to supply passengers with water - a large tank, and a smaller tank with a capacity of 90 l is designed to supply water to the car’s fire extinguishing system.

The presence of two tanks complicates the design of the car, reduces its useful living area, which should be attributed to the disadvantages of the analogue.

A device for refueling a passenger car with water is protected by USSR author's certificate No. 854789 for application No. 2708883 / 27-11 of 01/08/79. It contains a tank mounted in the upper part of the body and a vertically installed water pipe connected to the float chamber, an inlet valve and a check valve mounted on the water pipe and an expansion tank in communication with the tank. To turn off the filling of water, regardless of its pressure in the line, it is equipped with a retractable pipe section mounted by means of a bellows on the water pipe that carries the specified float, and the inlet valve is mounted above the outlet of the water pipe with the possibility of interaction with it.

The complexity of the design and fire extinguishing system should be attributed to the disadvantages of the analogue.

For the prototype of the invention we take the technical solution according to patent RU 2162040, IPC B 61 K 11/02, 01/20/2001. The system includes a receiving tank, with a float valve fixed inside the stationary casing, water spill lines for the domestic needs of passengers and for fire fighting, and a pipe for accessing water into the receiving tank, a dispensing column, the design of which allows automatic discharge of water from the pipeline. The process of filling the tank with water is controlled by a special device in the form of a tube connected to the valve. When the valve is activated, there is an increase in pressure in its chamber, which is connected with the tube, and a small portion of water leaks through the tube, signaling the end of the process of filling the tank with water and draining the water from the pipeline.

The complexity of the system design and the need for a large number of dispensing columns at refueling points should be attributed to the disadvantages of the prototype.

The aim of the invention is, firstly, to simplify the design of the water supply system of a passenger car, and secondly, to ensure automatic shutdown of the system when filling the tanks with water.

This goal is achieved by using a tank with water for general consumption and for fire fighting needs with a water level not consumed for these purposes, the filling of water of which is carried out automatically, regardless of its pressure in the main.

The essence of the invention lies in the fact that the tank is equipped with a float valve mounted on the signal pipe, equipped with a sensor - a pressure switch, and the entire water filling system of the passenger car is equipped with a shut-off valve with a membrane actuator of a poppet rubber valve, which shuts off the water supply to the combined tank when it is filled .

The invention is illustrated by drawings, where

figure 1 shows a diagram of a system for refueling a water passenger car;

figure 2 - the water level in the receiving tank;

figure 3 - the level of water remaining in the combined tank for the fire extinguishing system.

The passenger car’s water refueling system contains a receiving tank 1 (Fig. 1), inside of which a float valve 3 is fixed in a fixed casing 2, which is rigidly fixed to the movable axis 4. The water pressure in the system’s main is monitored by a pressure sensor 5 made by a signal fixed to the signal pipe 6, connected to the casing 2 and the valve box 7, inside of which are fixed a shut-off valve 8 of the membrane type, made in the form of a rubber disk valve, and a sealing stand 9 of a tubular type, blocking the access of water into the pipeline 10. The receiving tank 1 is equipped with a pipeline 11, limiting the presence of water remaining for the fire extinguishing system 12, equipped with a valve 13. The water is supplied to the receiving tank 1 through the loading heads 14 connected to pipelines 15 equipped with valves 16.

Watering a passenger car is as follows. Through one of the pipelines 15, water fills the receiving tank 1 levels A + B. At the same time, the shut-off valve 8 seals the rack 9 and stops pouring water into the receiving tank 1, while the pressure switch controls the pressure in the water supply system when refueling from an external source, and permissible critical pressure in the tank in case of system malfunction (valve failure, freezing or mechanical damage to pipelines).

Water consumption for domestic needs is carried out through pipeline 11 to level B. The level from B to the inner surface of the bottom is an untouchable reserve for fire fighting and is used through pipeline 12 by opening valve 13.

The technical result achieved by using the invention is that, using a pressure switch sensor, the pressure in the system and its serviceability are monitored, the valve system ensures that the receiving tank is filled without excessive water consumption, automatically, and the fire extinguishing system can use both a full receiving tank and a minimum Guaranteed balance B required to extinguish the fire.

Claims (2)

1. A passenger car refueling system, comprising a receiving tank with a float valve fixed inside the fixed casing, passenger water and fire extinguishing lines and a water access pipe to the receiving tank connected to the casing, characterized in that the float valve is mounted on an equipped a pressure sensor and a signal pipe, connected to the valve box with a shut-off valve of the membrane type, with which the intake tank filling line is equipped, in Filled with a volume providing a supply of water for the domestic needs of passengers and for fire fighting. 2. The passenger carriage refueling system according to claim 1, characterized in that the receiving tank is equipped with a flow pipe for the domestic needs of passengers, providing the remaining water in the fire fighting tank.

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