SPARE PARTS

Electric Pre-heating Device for Steam Locomotives

The electric pre-heating device considerably improves the operational readiness of steam locomotives. It offers the following advantages:

  • Unattended, electric heating of a steam locomotive up to a boiler pressure of 10bar.
  • Compensate the radiation losses to keep an engine in steam without attendance.
  • Filling of boiler without having to open a wash-out plug.

In contrast to the conventional method with combustible fuels, the heating in this case is effected by means of an electric continuous-flow heater. The water is extracted from the locomotive boiler and flows to the circulation pump, which forces the water through the continuous flow heater and back into the boiler. The forced circulation results in an extremly homogeneous heat-up, because the boiler is heated from the water-side and thus has the same temperature overall (as opposed to the conventional method by which the firebox and boiler tubes have to be heated first, while the outer firebox and the cylindrical boiler shell are still cold). The electric pre-heating device heats the boiler water slowly to the temperature preset on the thermostat and keeps it constant.

Our electric preheating devices have a standard power of 20 or 40 kW.Other ratings on request.

The pictures show the 25 kW version during the heating of an old coal-fired steam locomotive. The smoke- and noiseless heating is very much appreciated by the nearby residents.

AIR PUMP

Compressor, Air Pump

Mockup

Single stage compressor for working pressure from 10 to 16 bar. These are up-graded versions of standard Chinese compressors, not available at the moment. We are looking for alternatives

Return Bends for superheaters

umkehrende
umkehr-zeichnung

Superheater element return bend
Unicast on heat-resistant cast steel (16CrMo4)

 

Standard dimensions are as follows
.

pipe diameter
D
thickness
S
distance
X
33.7 mm
3.2 mm
44 mm
38.0mm
4.0 mm
45 mm

 

Other dimensions on request

BOILER SAFETY VALVES

sicherheitsventil

Technical Info:

  • Boiler pressure: 10 -18 bar
  • Steam flow rate adjustable
  • Optional pre-lifting lever
  • Integrated silencer for efficient noise reduction

Dimensions: (other dimensions on request)

ventil

LUBRICATION SYSTEMS

MECHANICAL LUBRICATION

zentralschmier

Concept of complete lubrication systems

DRIP-FEED LUBRICATOR

tropfoeler

Drip-feed lubricator in sturdy design:
• With adjusting screw and lock nut
• All mechanical parts in brass or bronze, all surfaces fine grounded

Applications:
steam engines for ships
• Stationary steam engines

Dimensions: (other dimensions on request)

troeler_masse

GREASE CUP

schmiertopf

• Spring-loaded automatic grease cup for grease-lubricated friction-type bearings
• Constant flow of lubricant
• Unthrottled feed of grease
• Robust lightweight construction for high acceleration

schmiertopf2

Grease cup in use (big end bearing of the rack steam locomotives)

schmiertopf

Dimensions

Non-lifting, re-starting Injector type ASZ no.6

injektor (002)

Injector Friedmann ASZ no. 6 right-hand side:

It's a non-lifting injector, adequate for a pressure range up to approx. 16 bar. Suitable for steam locomotives with a steam production of around 3 tons per hour. The injectors are new and unused, manufactured long time ago by Alex Friedmann, Vienna.