SCREW STEAM ENGINE Russian patent published in 2001 - IPC

FIELD: conversion of energy of steam to mechanical energy. SUBSTANCE: specific feature of proposed machine is availability of device for balancing reactive forces in bearing units arising on side of screws, as well as steam and oil separators. Device for balancing reactive forces in bearing units is made in form of cavity formed between shaft and housing and communicated with steam source on one side and with exhaust branch pipe (by means of throttling passages) on other side. Cavity is made in housing on both sides from screws along lateral surface of shaft on section which is opposite to direction of reactive forces. Steam and oil separators are provided with steam and/or oil discharge units. EFFECT: enhanced efficiency at increased service life due to improved sealing of operational and technological clearances between movable and fixed parts of steam engine. 5 cl, 4 dwg