초록 ▼

A method of and apparatus for momentum exchange of a pressurized fluid including a jet nozzle for discharging a jet of pressurized fluid produced by a pressure pump, a first inlet opening provided downstream of the jet nozzle, an air layer generating pipe, and a momentum exchange tube disposed downs

A method of and apparatus for momentum exchange of a pressurized fluid including a jet nozzle for discharging a jet of pressurized fluid produced by a pressure pump, a first inlet opening provided downstream of the jet nozzle, an air layer generating pipe, and a momentum exchange tube disposed downstream of the air layer generating pipe. A layer of air, around a highly pressurized fluid released from the jet nozzle, is formed by the air layer generating pipe. The momentum exchange tube is formed of a substantially straight construction and has an inner diameter which is greater than an inner diameter of the air layer generating pipe. An outlet provided at the momentum exchange tube for using, as a lifting elevation, the pressure produced by urging the pressurized fluid against air in the momentum exchange tube. The lifting force is calculated through dividing the pressure of the pressurized fluid by a ratio of the inner diameter of the momentum exchange tube and the diameter of the jet nozzle aperture, and multiplying the resultant value by an inertial force of the pressurized fluid.

대표청구항 ▼

[ What is claimed is:] [1.] A method of making a jet pump for momentum exchange of a pressurized fluid with a pumped fluid, said method comprising:providing a jet nozzle for discharging a jet of pressurized fluid produced by a pressure pump, said jet nozzle having an outlet aperture;providing an air

[ What is claimed is:] [1.] A method of making a jet pump for momentum exchange of a pressurized fluid with a pumped fluid, said method comprising:providing a jet nozzle for discharging a jet of pressurized fluid produced by a pressure pump, said jet nozzle having an outlet aperture;providing an air layer generating pipe in communication with a downstream end of said jet nozzle for forming a layer of air surrounding the pressurized fluid from said jet nozzle, said air layer generating pipe being substantially linear and coaxial with said jet nozzle, and having an inner diameter which is greater than a diameter of the outlet aperture of said jet nozzle; andproviding an inlet for pumped fluid downstream of said air layer generating pipe;providing a substantially straight momentum exchange tube disposed downstream of said inlet for the pumped fluid, said momentum exchange tube having an inlet opening in communication with said jet nozzle, said air layer generating pipe, and said inlet for the pumped fluid, wherein substantially straight momentum exchange tube further includes an outlet opening, and an inner diameter which is greater than the inner diameter of said air layer generating pipe,dimensioning said jet nozzle aperture, said air layer generating pipe, and said momentum exchange tube such that a desired lifting elevation for elevating a pumped fluid from said outlet opening is obtained, wherein the dimensions of said jet nozzle aperture, said air layer generating pipe, and said momentum exchange tube satisfy the following relationship: EQU H=[P/(A1/A2)].times.vmc re H is the desired lifting elevation, P is a lifting elevation of the pressure pump, representing the pressure of the pressurized fluid, A1/A2 is a ratio of the cross-sectional area of said momentum exchange tube to the cross-sectional area of the outlet aperture of said jet nozzle, and vmc is a density variation rate of the pressurized fluid.