Rail vehicle with pressure surge-safe graywater line

Patent metadata

Field	Value
Publication number	US-9758179-B2
Application number	US-201314652187-A
Country	US
Kind code	B2
Filing date	Nov 14, 2013
Priority date	Dec 14, 2012
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A rail vehicle includes a graywater line which is in communication with the surroundings of the rail vehicle directly or by way of a collecting container. The graywater line is equipped with a pressure protection valve, which protects a graywater line section upstream of the pressure protection valve from pressure surges occurring in the surroundings of the rail vehicle. The pressure protection valve is constructed as a pinch valve which is controlled by a control device in order to protect the graywater line section from pressure surges.

First claim

The invention claimed is:

1. A rail vehicle, comprising: a graywater line in communication with an exterior of the rail vehicle directly or through a collection container; a pressure protection pinch valve disposed in said graywater line and defining a segment of said graywater line upstream of said pressure protection pinch valve; and a control device controlling said pressure protection pinch valve to protect said segment of said graywater line from pressure surges occurring exterior of the rail vehicle; said control device controlling said pinch valve in accordance with a signal generated in the rail vehicle indicating an occurrence of a pressure surge.

2. The rail vehicle according to claim 1 , which further comprises:
a water consumer connected to said graywater line; and
a sensor detecting an actuation of said water consumer;
said control device opening or closing said pinch valve in accordance with the actuation of said water consumer.

3. The rail vehicle according to claim 2 , wherein said control device opens said pinch valve only when actuation of said water consumer is detected.

4. The rail vehicle according to claim 1 , wherein said signal generated in the rail vehicle is a speed signal, and said control device for said pinch valve evaluates the speed signal and prevents opening of said pinch valve if a threshold value for the speed signal is exceeded.

5. The rail vehicle according to claim 1 , which further comprises a pressure sensor, said control device opening or closing said pinch valve in accordance with a pressure surge detected by said pressure sensor.

6. The rail vehicle according to claim 5 , wherein said graywater line or said collecting container is equipped with said pressure sensor for detecting a pressure surge, and said pressure sensor is disposed downstream of said pinch valve.

7. The rail vehicle according to claim 1 , which further comprises:
a further pinch valve connected in series with said pinch valve and controlled by said control device;
said control device controlling said two pinch valves to ensure that at least one of said pinch valves is always closed.

Assignees

• Siemens Ag

Inventors

• Cinarci Turgay
• Gaertner Ralph
• Huebsch Christian
• Schneider Christian

Classifications

• Y10T137/1044

  With other condition responsive valve control · CPC title

• E03F1/006

  Pneumatic sewage disposal systems; accessories specially adapted therefore · CPC title

• B61D35/00 Primary

  Sanitation · CPC title

• B61D35/002 Primary

  Washing facilities · CPC title

• F16K3/30

  Details · CPC title