Patent ID: 9068455
Filing Date: 2015-06-30
Classification: F01B,F01L,F04B

Abstract:
1. A pneumatic engine system with gas circulation, comprising: a pneumatic engine receiving a compressed gas to produce power output; a gas storage device storing the compressed gas and supplying the compressed gas to the pneumatic engine; a transit gas storage tank recycling a gas discharged from the pneumatic engine; and a suction device transporting the gas recycled by transit gas storage tank to the gas storage device, wherein the gas storage device comprises: a first gas tank storing the compressed gas and providing the compressed gas to the pneumatic engine; a second gas tank storing the compressed gas, wherein a pressure in the second gas tank is less than a pressure in the first gas tank; a third gas tank storing the compressed gas, wherein a pressure in the third gas tank is less than the pressure in the second gas tank; a first booster pump located between the first gas tank and the second gas tank for pressurizing the compressed gas output from the second gas tank and supplying the pressurized compressed gas to the first gas tank; a second booster pump located between the second gas tank and the third gas tank for pressurizing the compressed gas output from the third gas tank and supplying the pressurized compressed gas to the second gas tank; wherein gases discharged from the first booster pump and the second booster pump are transported to the transit gas storage tank for recycling; and the suction device is configured to withdraw gas from the transit gas tank and transport the withdrawn gas to the second gas storage tank and/or the third gas storage tank.