NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

Introduced: September 1968

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
Subclass:: NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

Description

F01D covers non-positive-displacement turbomachines, primarily steam turbines and gas turbines, where fluid flow through rotating blades generates mechanical power without requiring positive displacement. This classification encompasses the design, construction, and operation of reaction and impulse turbines, including blade configurations, rotor assemblies, casing arrangements, and control systems. It applies to both stationary industrial turbines and mobile applications, but excludes positive-displacement engines (such as reciprocating engines covered under F01B) and compressors or pumps (classified separately in other sections).

Related Keywords

SCREW(S) motors actuated by fluids

13 direct subcodes

Child Classifications

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F01D 1/00 Non-positive-displacement machines or engines, e.g. steam turbines
F01D 11/00 Preventing or minimising internal leakage of working fluid, e.g. between stages
F01D 13/00 Combinations of two or more machines or engines
F01D 15/00 Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
F01D 17/00 Regulating or controlling by varying flow
F01D 19/00 Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
F01D 21/00 Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
F01D 23/00 Non-positive-displacement machines or engines with movement other than pure rotation, e.g. of endless-chain type
F01D 25/00 Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
F01D 3/00 Machines or engines with axial-thrust balancing effected by working fluid
F01D 5/00 Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
F01D 7/00 Rotors with blades adjustable in operation; Control thereof
F01D 9/00 Stators