Hydraulically powered compressor and hydraulic control and power system therefor
First Claim
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1. A hydraulically powered compressor for elevating the pressure of gaseous substances, comprising;
- a first double-acting piston and compression cylinder for initially compressing the gaseous substance;
a second double-acting piston and compression cylinder for additional compression of the gaseous substance;
a hydraulic power piston and cylinder disposed between the first and second double-acting pistons and cylinders;
the first and second double acting pistons and the hydraulic power piston each being disposed on a common elongate piston rod;
first piping for transferring the compressed gaseous substance from the first piston and compression cylinder to the second piston and compression cylinder;
second piping for transferring the compressed gaseous substance from the second piston and compression cylinder to an exit orifice;
first and second coils respectively associated with the first and second piping for cooling the compressed gaseous substance;
means for forcing air to flow over the first and second cooling coils;
the first and second pistons and compression cylinders, power piston and cylinder, first and second piping, first and second cooling coils, and air forcing means are all disposed within an air-cooling duct to provide cooling thereto; and
means for providing infinitely variable capacity control with a proportionately variable power requirement for the first and second pistons and compression cylinders, such means including a variable displacement hydraulic pump means for actuating the hydraulic power piston and cylinder so that the first and second pistons and compression cylinders may be operated over a range of from 0 to 100% of their capacity, with a proportionately variable power requirement.
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Abstract
A hydraulically powered compressor has infinitely variable capacity control through use of a variable displacement hydraulic pump, and a hydraulic control and power system provides the infinitely variable capacity control with a proportionate change in required power. Components may be mounted in an air duct.
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Citations
32 Claims
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1. A hydraulically powered compressor for elevating the pressure of gaseous substances, comprising;
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a first double-acting piston and compression cylinder for initially compressing the gaseous substance; a second double-acting piston and compression cylinder for additional compression of the gaseous substance; a hydraulic power piston and cylinder disposed between the first and second double-acting pistons and cylinders;
the first and second double acting pistons and the hydraulic power piston each being disposed on a common elongate piston rod;first piping for transferring the compressed gaseous substance from the first piston and compression cylinder to the second piston and compression cylinder; second piping for transferring the compressed gaseous substance from the second piston and compression cylinder to an exit orifice; first and second coils respectively associated with the first and second piping for cooling the compressed gaseous substance;
means for forcing air to flow over the first and second cooling coils;the first and second pistons and compression cylinders, power piston and cylinder, first and second piping, first and second cooling coils, and air forcing means are all disposed within an air-cooling duct to provide cooling thereto; and means for providing infinitely variable capacity control with a proportionately variable power requirement for the first and second pistons and compression cylinders, such means including a variable displacement hydraulic pump means for actuating the hydraulic power piston and cylinder so that the first and second pistons and compression cylinders may be operated over a range of from 0 to 100% of their capacity, with a proportionately variable power requirement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 18)
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12. A hydraulic control and power system for a compressor for gaseous substances having first and second double-acting pistons and compression cylinders and a reciprocating hydraulic power piston and cylinder for actuating the first and second pistons, comprising:
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a variable displacement hydraulic pump for providing hydraulic fluid to the power piston and cylinder to reciprocate the power piston within its cylinder; a two position shuttle valve for alternating the flow of hydraulic fluid from the pump into and out of the ends of the hydraulic power piston cylinder; a cam-operated, spring loaded check valve associated with each end of the power piston cylinder, said check valves being actuated by the reciprocating motion of the power piston to discharge hydraulic fluid from the respective end of said power piston cylinder; a pilot valve for actuating the shuttle valve in response to a pressure differential caused by the discharge of hydraulic fluid through one of the cam-operated, spring loaded check valves; a hydraulic fluid reservoir; and hydraulic fluid piping operatively associating the pump, shuttle valve, check valves, pilot valve and reservoir, with one another, so that upon varying the displacement of the pump, the speed of reciprocation of the power piston is varied, said hydraulic piping including means operatively connecting said check valves and pilot valve, said means consisting of conduits operatively extending from each of said check valves directly to said pilot valve for providing an all-hydraulic control of said pilot valve. - View Dependent Claims (13, 14, 15, 16, 17, 19, 20, 21, 22)
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23. A hydraulically powered compressor for elevating the pressure of gaseous substances, comprising:
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a first double-acting piston and compression cylinder for compressing the gaseous substance; a second double-acting piston and compression cylinder for compression of the gaseous substance; a hydraulic power piston and cylinder disposed between the first and second double-acting pistons and cylinders;
the first and second double acting pistons and the hydraulic power piston each being disposed on a common elongated piston rod;piping for transferring the compressed gaseous substance from the first and second pistons and compression cylinders to an exit orifice; cooling coils respectively associated with the piping for cooling the compressed gaseous substance; means for forcing air to flow over the cooling coils; the first and second pistons and compression cylinders, power piston and cylinder, piping, cooling coils, and air forcing means all being disposed within an air-cooling duct to provide cooling thereto; and means for providing infinitely variable capacity control for the first and second pistons and compression cylinders, the capacity control means including a variable displacement hydraulic pump for actuating the hydraulic power piston and cylinder, so that the first and second pistons and compression cylinders may be operated over a range of from 0 to 100% of their capacity. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification