Water supply system of railway vehicle

Abstract

The invention provides a water supply system of a railway vehicle, which comprises a water tank, a water pumping device, water consumption equipment, a control module and a middle water tank. The water tank is arranged below an underframe of a vehicle body, the water consumption equipment is disposed above the underframe of the vehicle body, the middle water tank is positioned above the water consumption equipment, an acquisition device is disposed in the middle water tank, a water outlet pipe of the water tank is communicated with the water pumping device while the other end of the water tank is communicated with the middle water tank via a water supply pipeline, a check valve which is used for preventing water in the middle water tank from flowing back to the water pumping device is arranged on the water supply pipeline, a distributing pipeline which is used for supplying water for the water consumption equipment is disposed on the water supply pipeline, the tail end of the distributing pipeline is connected with a drain pipe, and the control module is respectively connected with the acquisition device and the water pumping device, so that the water pumping device is started when an acquired liquid level signal value is lower than a preset value and then closed after a preset time. The water supply system of the railway vehicle has the advantages that leakage of the pipeline due to excessive pressure of the system is prevented, hidden dangers of bursting of the pipeline due to excessive water injection when a pressure sensor fails are eliminated, and operational reliability of the system is improved.

Description

technical field [0001] The invention relates to a water supply system, in particular to a railway vehicle water supply system. Background technique [0002] The main function of the railway vehicle water supply system is to meet the drinking water, washing and other water needs of passengers or passengers. As the speed of the train increases, the water supply system adopts the method of placing the water storage tank under the underframe of the car body to lower the center of gravity of the railway vehicle and improve the running stability. [0003] figure 1 It is a working principle diagram of a railway vehicle water supply system in the prior art. Such as figure 1 As shown, the railway vehicle water supply system in the prior art includes: a water storage tank 11 fixedly arranged under the chassis of the car body, an electric water pump 13, a water supply pipeline 12, a disinfection filter 14, and a water supply pipeline via the disinfection filter 14. 12 connected to ...

AI Technical Summary

Problems solved by technology

[0004] Due to the large number of components and complex structure of the railway vehicle water supply system in the prior art, the pressure in the whole system is relatively high, which is easy to cause leakage of the pipeline; in addition, because the water pump is mainly controlled by the pressure sensor Water supply, and the pressure in the pipeline of the water supply system is in a state of change, which interferes with the reliability of the pressure sensor and makes the working pressure sensor not stable enough, which easily leads to the failure of the pressure sensor, which may cause the pipeline to burst due to excessive pipeline pressure; In addition, the water supply system frequently starts the electric water pump during use, which also reduces the service life of the electric water pump and increases maintenance costs

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