FIELD: power industry.
SUBSTANCE: conversion of heat energy to potential gas energy for filling, compression and supply to high-pressure line is performed in one working volume which is divided into discharge and combustion chambers. Heat energy obtained in combustion chamber is converted to potential gas energy of discharge chamber; at that, at expansion stroke some part of potential gas energy of discharge chamber is used for gas supply to high pressure main line, and the rest part is supplied to provide motor operation. Such operating method can be implemented in piston-type compressor. In compressor cylinder there installed is additional piston not connected to compressor shaft which divides the working volume of cylinder into discharge and combustion chambers and moves under influence of pressure difference between chambers. In cylinder there installed is fuel supply atomiser, air inlet valve and waste gas outlet valve. In this case, combustion chamber of motor-compressor operates in the same way as combustion chamber of piston-type internal combustion engine the heat energy of which is supplied not only to create the torque moment of the shaft, but also for compression and supply of gas to high-pressure main line. For motor-compressor with the number of cylinders more than one there installed are switching valves on main lines connecting discharge chambers to HP and LP main lines.
EFFECT: providing parallel connection of discharge chambers of various cylinders to increase volumetric capacity or in-series connection to increase the pressure.
2 dwg, 5 cl
