Typically French accessories page
As you may already know, this is mainly constituted by the following visible elements:
|Those two (1 each side of chimney) barrels.
They are clearly visible on every Chapelon engine,
and also on many French locomotives of any kind.
|The double pump.
The middle part is the engine. Front and rear
parts are hot and cold water pumps.
The principle used in those is heating of cold water by mix with
exhaust steam(s). These are quite simple. The water level is kept constant
in the two barrels by a classical float/three way valve combination.
As usual, click on the drawing for a large version. English (?? I hope!) legend.
||A: Oil drain (through a balanced
piston preventing steam losses).
B: Westinghouse & A.C.F.I. pumps exhaust steam input.
C: Drain pipe (maintenance).
D: To hot water part of the pump (to boiler).
E: Cold water in, from cold water part of the pump, or from main injector.
F: Cold water return (to pump).
G: Thermometer pick-up.