A performance test device for ultra-high-speed centrifugal ventilator

Abstract

The application provides a performance test device for an ultra-high-speed centrifugal ventilator, which includes: a drive motor, a coupling assembly, and a main chamber assembly including a rotating assembly, a housing assembly, a sealing assembly, and a supporting bearing. A first lubricating chamber, an oil-air chamber and a second lubricating chamber are formed. This application adopts the layout form of three chamber structures, each chamber is isolated by a mechanical seal assembly, the two ends are respectively placed in separate lubricating chambers through support bearings, the centrifugal ventilator to be tested is placed in the middle oil-gas chamber, and then passed through The oil supply channels and nozzles in the bearing seat lubricate or cool the support bearings and seals, and the seal between the chambers prevents the lubricating oil in the lubricating chamber from affecting the oil-air environment in the oil-air chamber.

Description

technical field [0001] The application belongs to the technical field of centrifugal ventilators, and particularly relates to a performance test device for an ultra-high-speed centrifugal ventilator. Background technique [0002] Centrifugal ventilator is an important part of aero-engine lubricating oil ventilation subsystem. It is usually arranged in the accessory casing cavity or bearing cavity, between the cavity and the external environment. The phase mixture separates into oil and air, thereby reducing oil consumption. The separation efficiency and resistance of centrifugal ventilators are important characteristics of centrifugal ventilators. The level of separation efficiency will affect the recovery capacity of lubricating oil in the lubricating oil ventilation subsystem, thereby affecting the consumption of lubricating oil, thereby affecting the endurance of the aircraft; the size of the resistance It will affect the pressure of the sealing cavity, bearing cavity, l...

AI Technical Summary

Problems solved by technology

However, as the rotational speed of the centrifugal ventilator of the high thrust-to-weight ratio engine continues to increase (almost 30,000r / min), the existing centrifugal ventilator test device cannot meet the test requirements of the ultra-high rotational speed of the centrifugal ventilator.

[0006] In addition, the test device in the prior art only relies on the encoder of the driving motor to extract data and then converts it in the speed measurement. The way the encoder extracts the data cannot directly reflect the real speed, and the data cannot be traced. Real test results make motorized feedback, so there is a safety risk

Images