Elastic wave foil type cylindrical surface air film flexible supporting structure

Abstract

The invention relates to an elastic wave foil type cylindrical surface air film flexible supporting structure, and belongs to the technical field of non-contact mechanical sealing. The structure comprises an outer supporting shaft sleeve, a flat plate, a corrugated foil, a static ring, a moving ring rotor and a pressing block, a groove is formed in the moving ring rotor, the static ring is eccentrically installed on the moving ring rotor, the outer supporting shaft sleeve and the static ring are coaxially installed on an external structure, a clamping groove is formed in the circumferential inner wall of the outer supporting shaft sleeve, an arc plate is arranged on the corrugated foil, the arc plate is located on the inner circumferential wall of the outer supporting shaft sleeve, the flat plate is installed on one side in the clamping groove, the corrugated foil is tightly attached to the flat plate and installed in the clamping groove, and the pressing block is pressed into the other side in the clamping groove. According to the structure, the large load can be borne, and uniform structural rigidity can be borne; the supporting performance of the sealing structure can be improved by adjusting the number of the corrugated foils and parameters of the corrugated foils; the flexible supporting and buffering effect and the heat transfer performance of the sealing structure can be improved by adjusting the porosity degree of holes wound by steel wires of the flat plate and the arc plate.

Description

technical field [0001] The invention relates to an elastic wave foil type cylinder air film flexible support structure, which is especially suitable for an axial sealing device of a rotating shaft of a high-speed rotating machine, and belongs to the technical field of non-contact mechanical sealing. Background technique [0002] Sealing technology is one of the key technologies of aero-engines. Sealing technology plays a key role in improving mechanical work efficiency and ensuring reliability. The original traditional sealing methods all use contact seals, which are only suitable for low-speed rotating machines. For high-speed rotating machines, the contact seal structure will generate a lot of friction, which seriously affects the mechanical structure. Therefore, in high-speed rotating machines, non-contact seals are used. The sealing device is particularly important; the general aerospace field is the field of high-speed operation machinery, and the use of non-contact sea...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to provide a flexible support structure of elastic wave foil cylindrical air film to overcome the deformation of the sealing air film caused by the change of working conditions during the operation of high-speed rotating machinery, so that the instability of the air film will cause the gap between the moving ring rotor and the static ring. wear and tear

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