Flexible supporting mechanism with vibration and thermal insulation and deformation absorbing functions

Abstract

The invention belongs to the field of aerodynamics, and provides a flexible supporting mechanism with vibration and thermal insulation and deformation absorbing functions. The mechanism comprises a flow guiding sheet, an axial sleeve tube, flexible supporting frames and an asbestos heat preservation layer. Multiple flexible supporting frames are circumferentially and uniformly distributed betweenthe inner wall and outer wall of a cave body, each flexible supporting frame comprises a thermal insulation cushioning pad, a clamping structure and a saddle plate. The thermal insulation cushioning pads are applied to each linking position to prevent the problems of low compressor working efficiency and the like caused by unsatisfactory lubricating effect; vibration in the longitudinal and axialdirections is absorbed and insulated through the clamping structures, low-temperature resistant strong non-linear damping can be formed by internal metallic rubber to ensure that the performance of the clamping structures are not affected while resistant to low-temperature gases; deformation is effectively absorbed by the saddle plates to reduce the structural thermal stress to the maximum extent,and therefore it is ensured that a structure is not subjected to the variation of temperature resulting in the generation of deformation errors; the asbestos heat preservation layer is arranged on the outer side of the cave body to protect the whole structure. The novel flexible supporting mechanism provides a significant reference for the self-developing of a compressor.

Description

technical field [0001] The invention is mainly used in aerodynamic research and experiment, and mainly relates to the flexible supporting mechanism at the second corner of the large-scale low-temperature wind tunnel compressor unit. In addition, it also has important applications in the large-scale blower structure and the vent. Background technique [0002] As a pipe-shaped experimental equipment that can artificially generate and control airflow to simulate the flow of air around aircraft or objects, and can measure the effect of airflow on objects and observe physical phenomena, it is the most commonly used and most effective for aerodynamic experiments. Tool of. As the driving system of the wind tunnel, the axial flow compressor is one of the important factors affecting the safe operation of the wind tunnel and the performance of the flow field, so the performance of the compressor is particularly important. However, at present, most domestic manufacturers directly impo...

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Problems solved by technology

[0003] 1) The ambient temperature rises during the operation of the compressor, and the high temperature will reduce the lubricating effect of the lubricating oil and accelerate the friction of the machine head;

[0004] 2) When low-temperature gas passes through the compressor, the viscosity of lubricating oil decreases under low-temperature conditions, the lubricating effect decreases, and the resulting wear of the rotor increases, resulting in a decrease in the efficiency of the compressor;

[0005] 3) The temperature difference generated during the operation of the compressor unit will cause it to deform due to the principle of thermal expansion and contraction;

[0006] 4) The vibration generated during the operation of the compressor unit will accelerate the wear of the friction contact surface and shorten the service life of the machine. At the same time, the large vibration will increase the noise of the machine and deteriorate the working conditions of the operator

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