Liquid drop and solid plate oblique collision testing device

Abstract

The invention relates to a testing device in the aviation field, in particular to a liquid drop and solid plate oblique collision testing device. The problems that an oil drop and cavity wall collision visual test cannot be carried out in an existing aircraft engine bearing cavity test platform, the physical variance of the adjustment scopes of parameters such as liquid drop sizes of other liquid drop and solid wall face collision testing devices and a bearing cavity project is large, the device is complex in structure and high in cost are solved. According to the technical scheme, the liquid drop and solid plate oblique collision testing device is built and comprises a supporting frame, a liquid drop generation component, an angle-adjustable solid plate component, an oil return component and a lighting pick-up system, the dropping diameters of liquid drops are changed by changing syringe needles of the liquid drop generation component, and the dropping speed of the liquid drops is changed by changing the distance between the liquid drop generation component and a collision plate in a sliding mode; oblique angles of the collision plate can be continuously changed. By means of the liquid drop and solid plate oblique collision testing device, the splashing critical working condition caused after the liquid drop and solid plate oblique collision happens is conveniently determined, visual observation on the oil drop and cavity wall collision can be achieved, and cost is reduced.

Description

technical field [0001] The invention belongs to the field of aviation and relates to a test device, in particular to a liquid drop and solid plate oblique collision test device. Background technique [0002] In the bearing chamber of an aeroengine, the rolling bearing adopts the lubrication method of oil supply under the ring. The lubricating oil is thrown out from the bearing cage and broken into oil droplets of different sizes. The oil droplets of different sizes finally hit the bearing at different incident angles and operating speeds. Cavity wall, after hitting the cavity wall, oil droplets deposit to form oil film or generate splash. The critical condition of spreading and splashing of oil droplets after impacting the cavity wall is an important input condition for the theoretical and engineering research of the bearing cavity. Therefore, the engineering design of the bearing cavity needs to carry out the work support of the oil drop and cavity wall collision test, whic...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to design a liquid drop and solid plate oblique collision test device, which solves the problem that the existing aero-engine bearing cavity test bench cannot carry out the oil drop and cavity wall collision visualization test, and other liquid drop and solid wall collision tests. The adjustment range of the droplet size, velocity, incident angle and other parameters of the device is very different from the actual bearing cavity engineering, and the device structure is complex and the cost is high, which can reflect the actual conditions of the aero-engine bearing cavity oil drop / wall collision engineering Under the premise of complete oil drop / cavity wall, visual observation of collision and the effect of compact structure and low cost of the test device

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