Lubricating structure of speed reduction transmission device for gas turbine

Abstract

The invention discloses a lubricating structure of a speed reduction transmission device for a gas turbine. The speed reduction transmission device comprises a sun gear shaft, a gear holder and a plurality of transmission gears, wherein the transmission gears are uniformly distributed on the gear holder in the circumferential direction; a lubricating oil distributing ring is arranged at the oil outlet end of a lubricating oil channel in the gear holder; an annular oil supply base of the lubricating oil distributing ring is embedded into a center hole of the gear holder and forms a closed oil way ring cavity; a radial oil spraying hole in each radial oil spraying pipeline guides lubricating oil to be sprayed to meshing points of the sun gear shaft and the transmission gears in the radial direction; and a tail end oil spraying hole in an axial nozzle is right opposite to a front end oil inlet of a central lubricating oil passage, guides the lubricating oil to flow to the rear end of thesun gear shaft and further distributes the lubricating oil distribution. The lubricating structure has the advantages that the overall structure is ingenious, the oil pressure is stable, the lubricating and cooling effects on friction pairs such as the sun gear shaft and the transmission gears are good, and guarantees can be provided for weight reduction, stable and reliable operation and prolongation of the service life of the gas turbine.

Description

technical field [0001] The invention relates to the technical field of gas turbines, and relates to a lubricating structure of a reduction transmission device, in particular to a lubrication structure of a reduction transmission device for a gas turbine. Background technique [0002] During the operation of the gas turbine, it is necessary to lubricate and cool the shafts, gears and bearings inside the reduction transmission device. If there is no good lubrication and cooling, the power and service life of the gas turbine will be affected. During normal operation, the gas turbine needs to be supplied with lubricating oil on the working surfaces such as bearings and gears, which can form a continuous oil film, thereby reducing friction damage between structures, and taking away heat from friction and high-temperature parts at the same time, so as to maintain parts. Within the normal operating temperature range, improve the service life of parts. The lubrication methods of th...

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Problems solved by technology

The lower planetary gear in the oil-immersed lubrication method is below the liquid level for a long time, and the lubricating oil is brought to the sun gear shaft and other planetary gears during operation. This lubrication method cannot perform good lubrication and cooling on the sun gear shaft; the forced lubrication method One-side or double-side oil injection above the middle planetary gear realizes the lubrication of the planetary gear and sun gear shaft, but the utilization rate of the injected lubricating oil is low, and it cannot cool the inside of the sun gear shaft well

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