Sleeve-tooth-shaped floating sealing structure penetrating casing

Abstract

A sleeve-tooth-shaped floating sealing structure penetrating a casing is characterized by comprising the casing, casing mounts, transfer pipe sleeves, bolts, an external cone connector, a guide pipe, a ball joint housing, a ball joint, a captive nut, a flat nozzle and a guide pipe. The external cone connector and the guide pipe are integrated to be a guide pipe assembly inside the casing; the captive nut, the flat nozzle and the guide pipe are integrated by welding to be a guide pipe assembly outside the casing; the casing mounts are connected on the casing by welding or riveting; the transfer pipe sleeves are fixed on the casing mounts through bolts ,and closed up through the ball joint housing to be integrated with the ball joint; the ball joint housing can freely rotate corresponding to the ball joint in all directions within an allowed spacial range; and the ball joint is welded on the guide pipe. The sleeve-tooth-shaped floating sealing structure penetrating the casing has the advantages that the sealing structure is mainly designed for pipelines penetrating the casing on aero-engines, and the sealing structure with diameter of phi 6-phi 12 improves product performance, improves assemblability and tightness of the casing and the pipelines, and reduces assembly stress of the pipelines.

Description

technical field [0001] The invention relates to the field of sealing structures of aero-engines, and in particular provides a gear-shaped floating sealing structure for passing through casings. Background technique [0002] The pipes passing through the casing on traditional engines adopt different sealing structures according to their diameters and transmission media. Generally, pipelines with a diameter of φ6~φ12 adopt an integrated seal structure passing through the casing, that is, the joints on the pipeline in the casing are exposed outside the casing, and the half-type floating ring and the inner hole of the casing mounting seat (or independent sleeve) fit. This sealing structure is simple to fix and reliable in sealing, but requires the casing to be a split structure. There are often multiple pipes with different axial and angular positions on the engine passing through the casing. Therefore, when the casing is assembled, the mounting holes of the casing need to be ...

AI Technical Summary

Problems solved by technology

There are often multiple pipes with different axial and angular positions on the engine passing through the casing. Therefore, when the casing is assembled, the mounting holes of the casing need to be aligned with the positions of each pipe, which not only reduces the assembly of the casing, but also Easy to scratch and collide with the pipeline, which increases the difficulty of assembly work

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