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US 10,408,211 B2Granted
Hydraulic system for pressurization of gas with reduction of dead volume
AssigneeEaton Intelligent Power Limited
InventorQingHui Yuan
Life of this patent
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Abstract
A hydraulic system is provided to reduce a dead volume when pressurizing gas. The system includes a gas source, a gas output, a pressure vessel coupled to the gas source and the gas output, a hydraulic system that forces hydraulic fluid into the pressure vessel from the gas source to compress gas, and an overflow tank that receives overflow of hydraulic fluid once all gas has been expelled from the pressure vessel via the gas output.
Claims20
A system for compressing gas, the system comprising:
- a source of gas;
- a gas output location;
- first and second pressure vessels;
- first and second gas input lines for directing gas from the source of gas respectively to the first and second pressure vessels;
- first and second gas output lines for directing gas respectively from the first and second pressure vessels to the gas output location;
- a hydraulic system for moving hydraulic fluid back and forth between the first and second pressure vessels to compress gas in the first and second pressure vessels in an alternating manner, wherein gas can be pressurized in the first pressure vessel by directing a first charge of gas from the source of gas into the first pressure vessel through the first gas input line and moving hydraulic fluid from the second pressure tank to the first pressure tank to compress the first charge of gas within the first pressure vessel, wherein gas can be pressurized in the second pressure vessel by directing a second charge of gas from the source of gas into the second pressure vessel through the second gas input line and moving hydraulic fluid from both of the first pressure tank and the fluid overflow tank to the second pressure tank to compress the second charge of gas within the second pressure vessel;
- and
- an overflow arrangement for allowing all gas to be expelled from the first and second pressure vessels, wherein at least some hydraulic fluid flows into the overflow arrangement when all of the first charge of gas has been forced from the first pressure vessel;
- and wherein at least some hydraulic fluid flows into the overflow arrangement when all of the second charge of gas has been forced from the second pressure vessel;
- wherein the overflow arrangement includes an overflow tank that includes at least one sensor, wherein when the hydraulic fluid flows into the fluid overflow tank and reaches the at least one sensor, the hydraulic fluid in the fluid overflow tank is forced out of the fluid overflow tank and into at least one of the first and second pressure vessels.
7 more elements
A system for compressing gas, the system comprising:
- a source of gas;
- a gas output location;
- first and second pressure vessels;
- first and second gas input lines for directing gas from the source of gas respectively to the first and second pressure vessels;
- first and second gas output lines for directing gas respectively from the first and second pressure vessels to the gas output location;
- a hydraulic system for moving hydraulic fluid back and forth between the first and second pressure vessels to compress gas in the first and second pressure vessels in an alternating manner, wherein gas is pressurized in the first pressure vessel by directing a first charge of gas from the source of gas into the first pressure vessel through the first gas input line and moving hydraulic fluid from the second pressure tank to the first pressure tank to compress the first charge of gas within the first pressure vessel, wherein gas is pressurized in the second pressure vessel by directing a second charge of gas from the source of gas into the second pressure vessel through the second gas input line and moving hydraulic fluid from both of the first pressure tank and the fluid overflow tank to the second pressure tank to compress the second charge of gas within the second pressure vessel;
- and
- an overflow arrangement for allowing all gas to be expelled from the first and second pressure vessels during pressurization of the gas, wherein at least some hydraulic fluid flows into the overflow arrangement when all of the first charge of gas has been forced from the first pressure vessel;
- and wherein at least some hydraulic fluid flows into the overflow arrangement when all of the second charge of gas has been forced from the second pressure vessel;
- wherein the overflow arrangement includes an overflow tank that includes a first sensor and a second sensor, wherein when the hydraulic fluid flows into the fluid overflow tank and reaches the first sensor, the hydraulic fluid in the fluid overflow tank is forced out of the fluid overflow tank and into at least one of the first and second pressure vessels, and wherein when the hydraulic fluid reaches the second sensor, the hydraulic fluid cannot flow out of the fluid overflow tank.
7 more elements
A system for compressing gas, the system comprising:
- a source of gas;
- a gas output location;
- first and second pressure vessels;
- first and second gas input lines for directing gas from the source of gas respectively to the first and second pressure vessels;
- first and second gas output lines for directing gas respectively from the first and second pressure vessels to the gas output location;
- a hydraulic system for moving hydraulic fluid back and forth between the first and second pressure vessels to compress gas in the first and second pressure vessels in an alternating manner, wherein gas is pressurized in the first pressure vessel by directing a first charge of gas from the source of gas into the first pressure vessel through the first gas input line and moving hydraulic fluid from the second pressure tank to the first pressure tank to compress the first charge of gas within the first pressure vessel, wherein gas is pressurized in the second pressure vessel by directing a second charge of gas from the source of gas into the second pressure vessel through the second gas input line and moving hydraulic fluid from both of the first pressure tank and the fluid overflow tank to the second pressure tank to compress the second charge of gas within the second pressure vessel;
- and
- an overflow arrangement for allowing all gas to be expelled from the first and second pressure vessels during pressurization of the gas, wherein at least some hydraulic fluid flows into the overflow arrangement when all of the first charge of gas has been forced from the first pressure vessel;
- and wherein at least some hydraulic fluid flows into the overflow arrangement when all of the second charge of gas has been forced from the second pressure vessel;
- a first check valve located between the overflow arrangement and the first pressure vessel, the first check valve blocking fluid flow from the overflow arrangement to the first pressure vessel;
- a second check valve located between the overflow arrangement and the second pressure vessel, the second check valve blocking fluid flow from the overflow arrangement to the second pressure vessel;
- a first fluid sensor located between the first check valve and the overflow arrangement;
- and
- a second fluid sensor located between the second check valve and the overflow arrangement.
11 more elements
Dependencies are inferred from the claim text.