초록 ▼

A turbine nozzle for a gas turbine engine includes a hollow airfoil vane including a first wall, a second wall, and a plurality of pins extending therebetween. The nozzle also includes at least one row of turbulators. The first and second walls are connected at a leading edge and a trailing edge. Th

A turbine nozzle for a gas turbine engine includes a hollow airfoil vane including a first wall, a second wall, and a plurality of pins extending therebetween. The nozzle also includes at least one row of turbulators. The first and second walls are connected at a leading edge and a trailing edge. The first wall includes a plurality of slots extending towards the trailing edge, and the row of turbulators are substantially radially-aligned and extend between the plurality of slot and the pins.

대표청구항 ▼

A turbine nozzle for a gas turbine engine includes a hollow airfoil vane including a first wall, a second wall, and a plurality of pins extending therebetween. The nozzle also includes at least one row of turbulators. The first and second walls are connected at a leading edge and a trailing edge. Th

A turbine nozzle for a gas turbine engine includes a hollow airfoil vane including a first wall, a second wall, and a plurality of pins extending therebetween. The nozzle also includes at least one row of turbulators. The first and second walls are connected at a leading edge and a trailing edge. The first wall includes a plurality of slots extending towards the trailing edge, and the row of turbulators are substantially radially-aligned and extend between the plurality of slot and the pins. ng a flow of fluid to drive said rotor, said rotor being disposed in said casing and being driven by the fluid; and a diffusor for decelerating the fluid, said diffusor being disposed in said casing downstream of said rotor in a flow direction of the fluid, said diffusor including: at least one wall forming a channel for receiving the fluid, said at least one wall having an inlet, an outlet, and at least one opening for receiving an energizing fluid to be transported selectively into said channel, said inlet having a relatively smaller inlet flow cross section and said outlet having a relatively larger outlet flow cross section; said channel defining an axial direction, the fluid entering the diffusor in said axial direction; and said channel defining a radial direction, the fluid discharging from the diffusor in said radial direction. 19. A low-pressure steam turbine, comprising: a rotor; a casing for receiving a flow of fluid to drive said rotor, said rotor being disposed in said casing and being driven by the fluid; and a diffusor for decelerating the fluid, said diffusor being disposed in said casing downstream of said rotor in a flow direction of the fluid and having at least one wall forming a channel for receiving the fluid, said at least one wall having an inlet, an outlet, and at least one opening for receiving an energizing fluid to be transported selectively into said channel, said inlet having a relatively smaller inlet flow cross section and said outlet having a relatively larger outlet flow cross section. 20. A gas turbine, comprising: a rotor; a casing for receiving a flow of fluid to drive said rotor, said rotor being disposed in said casing and being driven by the fluid; and a diffusor for decelerating the fluid, said diffusor being disposed in said casing downstream of said rotor in a flow direction of the fluid and having at least one wall forming a channel for receiving the fluid, said at least one wall having an inlet, an outlet, and at least one opening for receiving an energizing fluid to be transported selectively into said channel, said inlet having a relatively smaller inlet flow cross section and said outlet having a relatively larger outlet flow cross section. 21. A water turbine, comprising: a rotor; a casing for receiving a flow of fluid to drive said rotor, said rotor being disposed in said casing and being driven by the fluid; and a diffusor for decelerating the fluid, said diffusor being disposed in said casing downstream of said rotor in a flow direction of the fluid and having at least one wall forming a channel for receiving the fluid, said at least one wall having an inlet, an outlet, and at least one opening for receiving an energizing fluid to be transported selectively into said channel, said inlet having a relatively smaller inlet flow cross section and said outlet having a relatively larger outlet flow cross section. 22. A Francis turbine, comprising: a rotor; a casing for receiving a flow of fluid to drive said rotor, said rotor being disposed in said casing and being driven by the fluid; and a diffusor for decelerating the fluid, said diffusor being disposed in said casing downstream of said rotor in a flow direction of the fluid and having at least one wall forming a channel for receiving the fluid, said at least one wall having an inlet, an outlet, and at least one opening for receiving an energizing fluid to be transported selectively into said channel, said inlet having a relatively smaller inlet flow cross section and said outlet having a relatively larger outlet flow cross section. 23. A method for preventing shock boundary layer pulsations in a diffusor, which comprises: measuring pressures of a moving fluid in a diffusor in a non-stationary manner; evaluating amplitudes and frequencies of the measured pressures; and feeding energizing fluid into the diffusor if the amplitudes within a predetermined frequency band exceed a threshold val