Low-temperature high-speed bearing test device for liquid rocket engine

Abstract

The invention provides a low-temperature high-speed bearing test device for a liquid rocket engine, and the device comprises a main housing which is internally provided with a bearing shafting assembly, and the bearing shafting assembly is provided with a to-be-detected test bearing. And an axial load loading assembly is arranged outside the main shell, is parallel to or coaxial with the axis of the bearing shafting assembly, and is used for applying an axial load to the tested bearing. A radial load loading assembly is further arranged outside the main shell, is perpendicular to the axis of the bearing shafting assembly and is used for applying a radial load to the tested bearing. A medium inlet assembly communicated with the interior of the main shell is arranged on the main shell and used for providing a cooling medium for the interior of the main shell. A front middle sleeve and a rear middle sleeve are arranged between the main shell and the bearing shafting assembly and used for fixing the bearing shafting assembly. The test device is good in compatibility, high in utilization rate and convenient to disassemble and assemble, the test efficiency is greatly improved, and the test cost and the labor cost are reduced.

Description

technical field [0001] The invention relates to the technical field of bearing testing devices, in particular to a low-temperature and high-speed bearing testing device, in particular to a low-temperature and high-speed bearing testing device for a liquid rocket engine. Background technique [0002] The high-speed turbo pump is an important component of the liquid rocket engine, and the low-temperature bearing is the key part of the turbo pump. The reliability of the low-temperature bearing is the basis for the stable, safe and reliable use of the engine. According to the operating conditions of the liquid rocket engine turbopump, it is necessary to carry out assessment tests on whether the performance and effect of the low temperature bearing under simulated rated and over-speed conditions meet the design requirements. The life of low temperature bearings is related to factors such as speed, cooling flow of low temperature medium, axial and radial loads and temperature. Th...

AI Technical Summary

Problems solved by technology

[0003] At present, there is already a test device for low temperature bearings in this technical field, but this test device can only test fixed types of bearings, and cannot meet the requirements for testing various types of low temperature bearings

And because of the design of the device structure, it is inconvenient to disassemble, which greatly increases the labor cost and test cost

Images