DR series 23
| DR series 23 | |
|---|---|
| Numbering: | 23 001–002 from 1970: 35 2001 |
| Number: | 2 |
| Manufacturer: | Schichau AG Elbing |
| Year of construction (s): | 1941 |
| Retirement: | 1975 |
| Axis formula : | 1'C1 ' |
| Type : | 1'C1 'h2 |
| Genre : | P 35.18 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 22,940 mm |
| Empty mass: | 80.1 t |
| Service mass: | 88.3 t |
| Service mass with tender: | 148.2 t |
| Friction mass: | 53.9 t |
| Wheel set mass : | 18.0 t |
| Top speed: | 110 km / h |
| Indexed performance : | 1,500 PSi / 1103 kW |
| Starting tractive effort: | ≈ 147 kN |
| Coupling wheel diameter: | 1,750 mm |
| Driving wheel diameter: | 1,750 mm |
| Impeller diameter front: | 1,000 mm |
| Rear wheel diameter: | 1,250 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 550 mm |
| Piston stroke: | 660 mm |
| Boiler overpressure: | 16 bar |
| Number of heating pipes: | 113 |
| Number of smoke tubes: | 35 |
| Heating pipe length: | 5,200 mm |
| Grate area: | 3.89 m² |
| Radiant heating surface: | 15.90 m² |
| Tubular heating surface: | 161.70 m² |
| Superheater area : | 63.60 m² |
| Evaporation heating surface: | 177.60 m² |
| Tender: | 2'2 'T 26 |
| Water supply: | 26.0 m³ |
| Fuel supply: | 8.0 tons of coal |
| Train heating: | steam |
The class 23 of the Deutsche Reichsbahn was a light passenger steam locomotive ( standard locomotive ). It was intended as a replacement for the Prussian P 8 . In the interest of broader exchange opportunities in the workshop service, the locomotive was given the same boiler as the series 50 developed in parallel and, like this, the newly developed tender 2'2 'T 26 with a front wall that offered protection to the staff when reversing.
history
The design of the locomotive genus was carried out by the standardization office, after deviating concepts to achieve higher possible heating surface loads, as the main administration of the Reichsbahn wanted to implement, for example with a combustion chamber boiler or long, narrow fire box in the Garbe style , then with regard to the standardization idea but had withdrawn again. In 1941 two prototype locomotives were built and delivered by the Schichau works in Elbing. The procurement of 800 locomotives was planned; Due to the Second World War , however, series production could not be started.
After the war, the two locomotives with the road numbers 23 001 and 23 002 remained with the Deutsche Reichsbahn and were stationed in Berlin, Brandenburg an der Havel, Jüterbog and Halle. In 1961, 23 001 received a Reko boiler with a combustion chamber developed for the 50 series . In 1970 this locomotive was given EDP number 35 2001-2.
The 23 002 was also to be reconstructed, but it was retired and dismantled in 1967 due to damage to the frame and the wheels. The 35 2001 was scrapped in Cottbus in 1975 because it was no longer suitable for use.
After the war, the design of the locomotives served as the basis for the new DR class 23.10 locomotive, also classified as class 23 . The new DB locomotive of the DB class 23 , on the other hand, was based on an unrealized design by BMAG for the DR class 23.
Constructive features
The two locomotives had a bar frame with 100 mm cheek thickness. The front wheel set together with the coupled wheel set formed a Krauss-Helmholtz frame . The other coupled wheel sets were firmly mounted in the frame; the rear wheelset is designed as an Adam's axle .
The riveted boiler with a welded steel firebox could be fed via a steam jet pump or a piston feed pump with a surface preheater. As with all standard locomotives, the controller was designed as a wet steam valve controller of the Wagner type.
The two-cylinder superheated steam engine with simple steam expansion and Heusinger control acted on the second coupled gear set; Karl Schulz valves were installed as pressure equalizers.
The tender 2'2 'T 26 of the two locomotives was structurally identical to that of the class 50.
literature
- Manfred Weisbrod, Hans Müller, Wolfgang Petznick: Steam Locomotive Archive , Volume 1 . transpress VEB Verlag for Transport, Berlin 1976, p. 180 ff.
