A connection structure of ventilation pipeline passing through casing

Abstract

The invention discloses a ventilating pipeline connection structure penetrating through a gear box. The ventilating pipeline connection structure is characterized by comprising the gear box, a gear box mounting seat, a floating ring, an independent joint, a sealing pad, a joint, a guide pipe and a quick release ring, wherein the gear box mounting seat is welded or riveted on the gear box, and the floating ring is arranged between the independent joint and the gear box mounting seat, so that the sealing of an opening of the gear box, pipeline installation and thermal expansion compensation are achieved. The independent joint is in threaded connection with the joint, the sealing pad is arranged between the independent joint and the joint, and the independent joint and the joint are sealed by the sealing pad and fixedly connected by the quick release ring, and the joint and the guide pipe are welded with each other to form a pipeline in the gear box. The ventilating pipeline connection structure has the advantage of improving the assembly property of the gear box and the pipeline. By the adoption of the rigidity of the large-diameter guide pipe, the requirement on a counter torque is eliminated when a pipeline is assembled outside the gear box. By the adoption of the design of the independent joint, the diameter of a connection part between the inner pipeline and the outer pipeline of the gear box is reduced, the diameter of the opening of the gear box is effectively reduced, the operation space for assembly is reduced, and the assembly maintainability is improved.

Description

technical field [0001] The invention relates to the field of aero-engine pipeline connection structures, and in particular provides a ventilation pipeline connection structure passing through the casing, with a diameter of φ30-φ50. Background technique [0002] The ventilation pipeline (with a diameter of φ30~φ50) passing through the casing on the traditional engine, in order to meet the installation of the internal and external pipelines of the casing and the sealing requirements of the casing opening, the connection structure design between the pipelines is often compared Complicated, the diameter of the casing opening is large, which reduces the strength of the casing. Generally, through the connection structure of the casing, the inner pipe joints of the casing are mostly exposed outside the casing, and the half-type floating ring is used to match the inner hole of the casing mounting seat. This connection structure is simple to fix and reliable in sealing, but it incre...

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

Images