Gas turboelectric locomotive

G. appeared for the first time in THE USA into 1948, into 1969 on zh d. of yunion Pacific it was exploited up to 50 g. with GDT by the power of 3300 kW (4500 hp.) and 6300 kW (8500l. s.). Otd. G. they were prepared also in Great Britain, Sweden, Switzerland and Czechoslovakia. First Soviet g. be in operation from 1965.

Power plant g. with the elec. transfer consists of gas turbine, compressor, direct-current generator and tractive electric motors. Generator ensures the nourishment of elektrich. by energy of the tractive electric motors, installed usually on one to each moving axis of locomotive.

Fig. 3. Arrangement of the power equipment of the gas turboelectric locomotive of Gy -01: 1 compressor; 2- turbine: 3 combustion chamber; 4 reducer; 5 main generators; 6 auxiliary diesel; 7 high-voltage cameras; 8 refrigerator of gas turbine engine; 9 fuel tank; 10 Torr compressor.

The transmission mode of power from the shaft of gas turbine to the drive wheels g. is determined by type GTD - GAS-TURBINE ENGINE and its designation. It adapts With Single-shaft GTD - GAS-TURBINE ENGINE

Fig. 1. Schematic of the single-shaft gas-turbine unit of the open cycle: 1- air compressor; 2- gas tuobnna; 3 combustion chamber; 4 atmospheric air; 5 waste gases) 6 fuel-.

elektrich. diesel type transfer; t. n. the positive drives, whose the use is possible in G. with the multishaft engine, there are mechanical (main reducer, Cardan joints, axial reducers) or electrical of alternating current (synchronous generators, the asynchronous squirrel-cage motors). On g. there is also a launcher, usually diesel - 150-240 kW (200 300 hp). Its osn designation - to bring the speed of rotation of generator to the value, with which the compressor begins to give air into the combustion chamber. Furthermore, this installation moves the locomotive, when it follows without the composition, and it feeds a number of vspomogat. of aggregates. Gas-turbine unit g. usually works on the heavy liquid propellant or the gas.

G. have a number of advantages not only over locomotives, but according to the some indices and before the diesel locomotives. Thus, specific mass g., i.e. mass per the unit of power, composes ok. 50% of mass of locomotive and 75% of mass of diesel locomotive; compactness of gas-turbine unit makes it possible to decrease the length of locomotive approximately 2 times in comparison with the diesel locomotive of equal power; power plant g. does not require water supply; simplicity of the construction of gas-turbine aggregate ensures reliability and continuity of its work, facilitates maintenance and routine repair. Control g. is reduced to the feed control of fuel into the combustion chamber. The proper regime 3lekt- Rich transfer is ensured automatically.

G. kolomenskogo teplovozostroit. of the plant of Gy -01 (Fig. 2 and 3) differs in terms of high reliability GTD - GAS-TURBINE ENGINE, simplicity of withdrawal and repair, in terms of possibility of work on heavy fuel.

The development of gazoturbovozostroyeniya thus far did not leave the experimental stage, main obr. because of comparatively low efficiency (approximately 2 times lower than efficiency of diesel locomotive). Are conducted the works on the increase efficiency G. napr., Luganskim of teplovozostroit. by plant it is built experimental g. with SPGG with the power of 2200 kW (3000 l. s.). Power plant consists of 4 elec. generators, which work on one gas turbine, hydro-mech. transfers and vspomogat. of equipment. Similar experimental g. are created also in France and Sweden. Efficiency such g. can reach 30-32%.

Lit.: Belokon' n. i., gas-turbine locomotives, "rail transport", 1955, N° 4; Locomotive gas-turbine units, M., 1962; Bartosh E. T., Gas turboelectric locomotives, M., 1963; Questions of the creation of powerful gas-turbine locomotives. [ coll. st. ], M., 1966. Ye. t. bartosh.