Pneumo-hydraulic converter for energy storage
OwnerIvan Cyphellyinventor
Life of this patent
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Abstract
In order to maintain high efficiency close, to isothermy despite high frequencies in a pneumo-hydraulic converter with reciprocating pistons, pipe cluster-heat exchange pipes (38) are provided in the gas working chambers of the converter and the exchange fluid in the pipes is kept at approximately ambient temperature. For this the gas working chambers must be arranged axially next to one another and, in order to eliminate dead space, connected in pairs by conical exchange valves (12a/12b) which take in the entire wall thickness of the valve flange (5a/5b) dividing the air chambers.
Claims19
Pneumo-hydraulic converter for the conversion of at least one of pneumatic power into hydraulic power and hydraulic power into pneumatic power, including
- a reciprocating piston,
- a gas working chamber which is partially defined by the piston and in which is provided a gaseous working medium,
- an oil working chamber which is partially defined by said piston and in which is provided a liquid working medium,
- an air storage tank connected to the gas working chamber by means of valves, and the oil working chamber connected to a hydraulic circuit, a rod connected to said piston, and
- a tubular heat exchanger which passes through the piston and is connected to an exterior cooling circuit which is designed to maintain the temperature of the gaseous working medium in the gas working chamber at an essentially constant level, said tubular heat exchanger including at least a portion extending outside of said rod.
A pneumo-hydraulic converter which comprises:
- an housing which defines a first end portion, a middle portion and a second end portion,
- a first piston which is reciprocatingly movable in said middle portion to define two varying volume pre-pressure air chambers on opposite sides of said first piston,
- a second piston which is reciprocatingly movable in said first end portion to define a first hydraulic chamber and a first high-pressure air chamber on opposite sides of said second piston,
- a third piston which is reciprocatingly movable in said second end portion to define a second hydraulic chamber and a second high-pressure air chamber on opposite sides of said third piston,
- a rod which is connected to and extends between said second piston and said third piston and through said first piston, and
- heat exchanger means which extends through said first end portion of said housing, through said second piston, outside of said rod, through said third piston, and through said second end portion of said housing to convey cooling media through said housing.
Dependencies are inferred from the claim text.