Russian series Л
| Russian series Л (L) | |
|---|---|
 Steam locomotive Л
|
|
| Numbering: | unknown |
| Number: | 66 |
| Manufacturer: | Putilov |
| Year of construction (s): | 1914-1918 1923-1926 |
| Axis formula : | 2'C1 |
| Genre : | Pacific |
| Gauge : | 1524 mm |
| Length: | 14,000 mm |
| Empty mass: | 85.6 t |
| Service mass: | 96.7 t |
| Friction mass: | 51.9 t |
| Wheel set mass : | 17.3 t |
| Top speed: | 120 km / h |
| Indexed performance : | 1,500-1,600 hp |
| Driving wheel diameter: | 1,840 mm |
| Impeller diameter front: | 940 mm |
| Rear wheel diameter: | 1,310 mm |
| Number of cylinders: | 4th |
| Cylinder diameter: | 460 mm |
| Piston stroke: | 650 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 4.65 m² |
| Radiant heating surface: | 17.6 m² |
| Tubular heating surface: | 252.0 m² |
| Superheater area : | 85.5 m² |
| Evaporation heating surface: | 269.6 m² |
| Service weight of the tender: | 27.5 t |
| Water supply: | 28 m 3 |
| Fuel supply: | 10 t |
| Particularities: | The locomotive has a four-cylinder single expansion engine |
The steam locomotives of the Russian class Л designed for the Vladikavkaz Railway Company were a series of Russian express train steam locomotives of the type 2'C1 and - apart from the 2'C1 'tank locomotives of the series П of the Ryazan-Ural Railway with additional tenders - the only Pacific locomotives built in Russia . A special feature of them is that they had a four-cylinder single expansion engine. The locomotives are not to be confused with the Soviet Л series , which appeared after 1945. The only similarity between the two locomotive designs was that both designers happened to have the same first letter of their surname. For this reason, the locomotive was renamed Л П (Л = Lopuschinski, П = Passaschirski; passenger locomotive) in 1947 .
history
The locomotives of the Л series (also known by the nicknames "Wladikawski Pacific" or "Elka") were Russian express train steam locomotives with the axle formula 2'C1. They were manufactured in the Putilov factories from 1914 to 1918 and from 1923 to 1926 . They were designed by the Russian-Polish engineer Wacław Łopuszyński , who at the time was the chief engineer of the Vladikavkaz Railway Company . For its main route from Rostov-on-Don to Vladikavkas , the company needed more powerful express locomotives in order to reduce the pre-tensioning services that were often necessary up to now .
The use of a four-cylinder single expansion engine in a fixed frame was rare for the construction of Russian and Soviet steam locomotives. The middle axis, on which the outer cylinders also acted, was cranked; the connecting rods of the two middle cylinders acted on it. With the design as a four-cylinder machine, Łopuszyński pursued the goal of placing as little stress on the superstructure as possible. For the Vladikavkaz Railway, 18 pieces were initially produced from 1915 to 1918. All specimens were fired with naphtha . From 1924 a further 48 pieces were produced for the October Railway , which they used in front of express trains on the route between Moscow and Leningrad . In 1937 they were replaced there by more powerful locomotives and also came to the foothills of the Caucasus. This only Russian Pacific type was finally retired in the 1950s.
Comparable German quad locomotives such as the 17.6 of the DRG were retired 20 years earlier. A similar four-of-a-kind Pacific, the Romanian 231 , remained in service until the early 1970s.
literature
- Vitaly Alexandrowitsch Rakow: Паровозы серии Л - Локомотивы отечественных железных дорог 1845–1955 ( Russian ), 2nd revised edition. Edition, Transport Verlag, Moscow 1995, ISBN 5-277-00821-7 , pp. 244–245, 283.
- Jury Leonid Koffman: Lopuschinsky's 23,000 locomotives. in: Lok-Magazin 93, November / December 1978, pp. 428–436.
Web links
Individual evidence
- ↑ Erhard Born: 2C1: Development and history of the Pacific locomotives. Franckh, Stuttgart 1965, p. 50.