Definition of de Laval turbine. Meaning of de Laval turbine. Synonyms of de Laval turbine

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Definition of de Laval turbine

de Laval turbine
Turbine Tur"bine, n. A form of steam engine analogous in construction and action to the water turbine. There are practically only two distinct kinds, and they are typified in the de Laval and the Parsons and Curtis turbines. The de Laval turbine is an impulse turbine, in which steam impinges upon revolving blades from a flared nozzle. The flare of the nozzle causes expansion of the steam, and hence changes its pressure energy into kinetic energy. An enormous velocity (30,000 revolutions per minute in the 5 H. P. size) is requisite for high efficiency, and the machine has therefore to be geared down to be of practical use. Some recent development of this type include turbines formed of several de Laval elements compounded as in the ordinary expansion engine. The Parsons turbine is an impulse-and-reaction turbine, usually of the axial type. The steam is constrained to pass successively through alternate rows of fixed and moving blades, being expanded down to a condenser pressure of about 1 lb. per square inch absolute. The Curtis turbine is somewhat simpler than the Parsons, and consists of elements each of which has at least two rows of moving blades and one row of stationary. The bucket velocity is lowered by fractional velocity reduction. Both the Parsons and Curtis turbines are suitable for driving dynamos and steamships directly. In efficiency, lightness, and bulk for a given power, they compare favorably with reciprocating engines.

Meaning of de Laval turbine from wikipedia

- design of steam turbines and centrifugal separation machinery for dairy. Gustaf de Laval was born at Orsa in Dalarna in the Swedish de Laval Huguenot family...
- turbine, and to Swedish engineer Gustaf de Laval (1845–1913) for invention of the impulse turbine. Modern steam turbines frequently employ both reaction and...
- engineer Gustaf de Laval applied his own converging diverging nozzle design for use on his impulse turbine in the year 1888. Laval's convergent-divergent...
- New York. Another company that Gustaf de Laval founded in the United States in 1901 was the De Laval Steam Turbine Company in Trenton. In Sweden, AB Separator...
- Other variations of turbines have been developed that work effectively with steam. The de Laval turbine (invented by Gustaf de Laval) accelerated the steam...
- use, because in its original form de Laval proposed the separator for use in his steam turbine. De Laval's turbine used mechanically lubricated journal...
- developing the Ljungström turbine. In 1916, STAL became a subsidiary of ASEA. In 1959, the company was merged with AB de Laval Steam Turbine in Stockholm and formed...
- take part in designing FDNY’s super pumper and its companion tender. DeLaval Turbine was commissioned to design a multistage centrifugal pump with a Napier-Deltic...
- × Bab**** & Wilcox boilers, 580 psi (3.7 MPa); 825 °F (440 °C) 1 × De Laval turbine 22,000 shp (16.4 MW) sustained 1 shaft Speed 21 knots (39 km/h; 24 mph)...
- equipped with two geared steam turbines, each driving one propeller shaft, using steam provided by 4 water-tube boilers. The turbines were intended to produce...