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词汇 Steam dome
分类 英语词汇 英语翻译词典
释义

Steam dome

英语百科

Steam dome

Cutaway section of a steam dome, showing the regulator inside
1:2 model of a Burrell single-crank compound traction engine. Note the Ramsbottom safety valve mounted on top.
Cornish boiler, with a 'Dolly Varden' dome

The steam dome is a vessel fitted to the top of the boiler of a steam locomotive. It contains the opening to the main steam pipe and its purpose is to allow this opening to be kept well above the water level in the boiler. This arrangement acts as a simple steam separator and minimises the risk that water will be carried over to the cylinders where it might cause a hydraulic lock - this is also known as priming.

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