Multipoint radial jetting oil supply nozzle for high-speed and heavy-load bevel gear

Abstract

The invention relates to a multipoint radial jetting oil supply nozzle for a high-speed and heavy-load bevel gear. A hollow oil chamber, an oil inlet and oil jetting holes are formed in the nozzle. The hollow oil chamber communicates with the oil inlet and the oil jetting holes. A circumferential locating boss is formed at the end of the oil supply nozzle. The oil jetting holes comprise the first oil jetting hole, the second oil jetting hole and the third oil jetting hole. The three oil jetting holes are all formed in the end of the oil supply nozzle, and an independent included angle is formed between each of the three oil jetting holes and the central axis. An upper limit value of the oil supply amount exists for transmission of any gear. When the oil supply amount exceeds the upper limit value, no cooling effect can be achieved for the gear. The upper limit value is called as the valid oil supply amount, and the exceeding part is the invalid oil supply amount. By means of the multipoint radial jetting oil supply nozzle, the valid oil supply amount can be increased, the invalid oil supply amount can be controlled, and the cooling effect can be improved.

Description

technical field [0001] The invention relates to a multi-point radial injection oil supply nozzle for high-speed heavy-duty bevel gears, in particular to an injection oil supply structure for cooling high-speed heavy-duty bevel gears in a gas turbine engine. Background technique [0002] The choice of gear lubrication method is related to the linear speed. Foreign standards such as AGMA 2005-D03 recommend selection according to Table 1. [0003] Table 1 Selection of lubrication method [0004] Pitch line speed (m / s) spray position Remark 15-25 biting side Lubrication is primary, cooling is secondary. 25-60 Engagement side / Engagement side Cooling is the main thing, lubricating oil should be enough 60-100 Meat out side Cooling is dominant, lubricating oil should be surplus ＞100 two-way fuel injection Lubrication on the teeth side, cooling on the outlet side, high flow distribution ratio on the outlet side [0005] Research shows...

AI Technical Summary

Problems solved by technology

[0007] 1) The calorific value is large at higher power, but there is an upper limit for the cooling capacity of oil injection lubrication. When the calorific value exceeds the upper limit, increasing the oil supply will have no effect on the cooling of the gear teeth

[0008] 2) At a higher speed, the wind resistance has a great influence, and the spray may not be able to reach the vicinity of the exit mesh

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