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Ventilating device with oil preventing function

A ventilation device and function technology, which is applied in the field of the reducer of the helicopter transmission system, can solve the problems of increasing the liquid-gas ratio of the ventilation plug, the oil mist of the reducer, and reducing the oil-gas separation efficiency of the ventilation plug, etc.

Pending Publication Date: 2021-06-11
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Through in-depth research, it is found that the oil mist inside the reducer is heavy, and the high-temperature lubricating oil is sprayed by the nozzle and splashed by the high-speed rotating gear, so that part of the lubricating oil directly splashes into the vent plug and the internal gas-liquid filter, increasing the vent plug. The near liquid-gas ratio reduces the oil-gas separation efficiency of the vent plug, resulting in oil leakage

Method used

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  • Ventilating device with oil preventing function
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  • Ventilating device with oil preventing function

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] The present invention is designed with a bottom plate 1 at the bottom of the ventilation device, which effectively prevents the splashed lubricating oil from directly entering the ventilation device; at the same time, a number of small ventilation holes 2 perpendicular to the inner hole are designed on the side wall of the ventilation device, and the area of ​​the small ventilation holes 2 and not less than the ventilation area of ​​the ventilation plug to ensure the ventilation function; the small ventilation holes 2 are designed to be distributed asymmetrically along the circumference of the side wall of the ventilation device. The gas stays and flows down the inner wall under the action of gravity, and the gas changes direction and flows to the ventilation device, which plays a role in the preliminary separat...

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Abstract

The invention belongs to the technical field of helicopter transmission system reducer and discloses a ventilating device with an oil preventing function. The ventilating device is fixed to a side wall of a reducer cartridge and comprises a bottom plate arranged at the bottom of the ventilating device and several small vent holes arranged in the side wall of the ventilating device and vertical to the inner hole, such that lubricating oil splashing to the ventilating device is stopped, the liquid-gas ratio of gas passing through a ventilating plug is reduced, a working environment of the ventilating plug is improved and the problem of oil leakage of the ventilating plug is solved.

Description

technical field [0001] The invention belongs to the technical field of reducers for transmission systems of helicopters, and in particular relates to a ventilation device with an oil-proof function. Background technique [0002] The vent plug is usually installed on the reducer. Its main function is to release the internal cavity pressure to avoid excessive cavity pressure. At the same time, it separates the liquid in the gas and has the function of gas-liquid separation. [0003] Vent plug mounting seat, one end is installed on the casing of the reducer, and the other end is connected to the vent plug with the function of ventilation and gas-liquid separation, which acts as a conversion connection. The disassembly causes damage to the casing of the receiver, and at the same time has a certain ventilation function. [0004] At present, the vent plug mounting seat used for the helicopter reducer has a simple structure, such as figure 1 As shown, the inner hole is designed a...

Claims

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Application Information

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IPC IPC(8): F16H57/027
CPCF16H57/027
Inventor 张羽胡克伟瘐邦王玲云程巾英秦艳波齐晓辉徐秀波于伟徐童童
Owner HARBIN DONGAN ENGINE GRP
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