PL405852A1 - Vane expansion engine - Google Patents

Abstract

The subject of the invention is an expansion vane engine used at natural gas reduction stations to drive a power generator. The expansion motor has a body (1) covered with a ribbed jacket (12). Covers are attached to the body on both sides, front (5) and rear (7), in the middle of which covers are located, respectively front (6) and rear (8). The front cover (6) is sealed with a flat gasket (9). The engine body (1) has an elliptical raceway, and the shaft (3) of the bladed rotor (2) is hollow inside and is terminated on one side with a connector (15) for the gas inlet port. Moreover, radial holes are made in the shaft axis (3) and in the rotor (2). The blades (4) are mounted in the grooves of the rotor (2) and can be moved freely in the radial direction. The side walls of the rotor (2) are separated from the front (5) and rear (7) covers by slides (14), permanently attached to the rotor, and front (10) and rear (11) inserts, made similarly to the blades (4) with material with a low coefficient of friction, preferably Teflon. The front insert (10) is permanently mounted between the rotor (2) and the cover (5), while the rear insert (11) is equipped with pressing elements (13) located in the rear cover (7). The engine jacket (12) has holes for two gas inlet conduits with connections and two outlet holes per side for the expanded gas.