METHOD FOR OBTAINING MECHANICAL ENERGY FROM ACTION OF GAS PRESSURE AND PISTON EXPANDER FOR ITS IMPLEMENTATION Russian patent published in 2024 - IPC F25B1/02 

FIELD: gas and oil and gas industries.

SUBSTANCE: invention can be used in piston expander units at integrated power plants (IPP), using differential pressure at gas distribution stations (GDS). The piston expander consists of a cylinder block, a five-bearing crankshaft, and a five-link crank mechanism. The cylinder block is divided into sections, each of which contains a horizontal cylinder with a liner with a piston and a crosshead guide. The intake piston valve drive mechanism consists of a front cam camshaft and a fork lever. The front camshaft passes through the front cylinder head. The rear camshaft passes through the rear cylinder head. The crankshaft is connected to each piston through a five-link crank mechanism. A gear train is located at one end of the five-bearing crankshaft. The method for obtaining mechanical energy from the actuation of gas pressure is characterized by supplying gas through the inlet piston valve to each cylinder of the piston expander. Within the cylinder, the piston moves from top dead centre (TDC) to bottom dead centre (BDC). When the piston moves in the cylinder until the piston reaches BDC, the inlet piston valve closes and the exhaust parts open. After which the exhaust parts close, when approaching TDC, the intake piston valve opens and the cycle of piston movement from TDC to BDC is repeated.

EFFECT: increase of efficiency of the piston expander.

4 cl, 7 dwg