Train whistle

The steam whistle is a technical device in which means highly compressed water vapor (vapor pressure ), an acoustic signal ( with the railroad railway signal at the steamship, see below, eg fog signal, price-signal distress, etc.) is generated.

Steam pipes are used both in stationary and in mobile steam generation systems and can be used as long due to the use of the generated and pre -preserved for work purposes vapor such as sufficient steam pressure is available.

In railways, the steam whistle is (steam if available ) or a similar device ( compressed air pipe, exhaust pipe) required to generate acoustic signals by the Railway Construction and Operation (EBO ).

The principle of the steam whistle based on the fact that escapes through a narrow gap steam against a pipe bell. Here, the bouncing steam generated vibrations at the bell, which are perceived as whistling.

The operation of the steam whistle is carried out at railway vehicles via a mechanical linkage from the cab of the locomotive or railcar to the control valve between the steam supply and whistle. By means of the main valve and auxiliary valve can be generated by a different dosage of the steam flowing through a different tone and different volumes of Pfeifsignals.

The arrangement of the steam whistle on motor vehicles of the train is very different between the series. Arrangements on the cab roof, ahead of the cab on the boiler barrel or directly above the smoke chamber are known.

Steam pipes and steam sirens were also used in the steam navigation.

A formerly very widespread vapor pressure pipe is the pipe on Kettles. It emits a beep when the water is boiling in the kettle on the stove.

On the principle of the acoustic pipe organ pipe see.

• Steam locomotive technology
• Steam technology
• Whistle