Ads
related to: safety valve steam engine
Search results
Results From The WOW.Com Content Network
An oxygen safety relief valve DN250-safety valves. A safety valve is a valve that acts as a fail-safe.An example of safety valve is a pressure relief valve (PRV), which automatically releases a substance from a boiler, pressure vessel, or other system, when the pressure or temperature exceeds preset limits.
Collects steam at the top of the boiler (well above the water level) so that it can be fed to the engine via the main steam pipe, or dry pipe, and the regulator/throttle valve. [2] [5] [6]: 211–212 [3]: 26 Air pump / Air compressor Westinghouse pump (US+) Powered by steam, it compresses air for operating the train air brake system.
Piston valves are one form of valve used to control the flow of steam within a steam engine or locomotive. They control the admission of steam into the cylinders and its subsequent exhausting, enabling a locomotive to move under its own power.
The passages of the steam jacket were large enough that the safety valve could also be mounted on the cylinder block. The regulator could also conveniently be built into the casting, immediately between the dome passage and the valve chest, without requiring long steam pipes. US traction engines were commonly fitted with domes, as were the ...
If steam is released normally, say by opening a throttle valve, the bubbling action of the water remains moderate and relatively dry steam can be drawn from the highest point in the vessel. If steam is released more quickly, the more vigorous boiling action that results can throw a fine spray of droplets up as "wet steam" which can cause damage ...
A system will also require an approved steam safety valve and water level control as well as valves for water into the boiler and steam to the engine. If the system is intended to run without supervision, then sensors and automatic safety shutdown systems are needed.
If the pressure reaches the boiler's design working limit, a safety valve opens automatically to reduce the pressure [34] and avoid a catastrophic accident. Aftermath of a boiler explosion on a railway locomotive, c.1850. The exhaust steam from the engine cylinders shoots out of a nozzle pointing up the chimney in the smokebox.
In the simple case, this can be a relatively simple task as in the internal combustion engine in which the valves always open and close at the same points. This is not the ideal arrangement for a steam engine, though, because greatest power is achieved by keeping the inlet valve open throughout the power stroke (thus having full boiler pressure, minus transmission losses, against the piston ...