Hydraulic device of a control device, such as a blade pitch-change device

摘要

A hydraulic device includes a body, a piston rod configured to be actuated by a pressurized hydraulic fluid, and a first drainage channel for externally draining an internal leakage of hydraulic fluid in the device. The device includes a second drainage channel for externally draining the internal leakage of hydraulic fluid in the device, the first and second channels being oriented in two different directions and each of the channels communicating at one of the ends thereof inside the body of the device.

主权项

1. A hydraulic device comprising:
a body; a piston rod configured to be actuated by a pressurised hydraulic fluid; a first drainage channel constructed and arranged to externally drain an internal leakage of the hydraulic fluid in said device, and a second drainage channel constructed and arranged to externally drain said internal leakage of hydraulic fluid in the device; said first drainage channel and said second drainage channel being orientated in two different directions, said first and second drainage channels communicating with each other, and each of said first and second drainage channels further communicating at one of their ends with the interior of said body of said device, wherein said two drainage channels form a V or Y profile.