Detachable lubricating oil main pipe structure for aero-engine central transmission mechanism

Abstract

The invention relates to a detachable lubricating oil main pipe structure for an aero-engine central transmission mechanism and belongs to the technical field of aero-engine mechanical system design.The detachable lubricating oil main pipe structure comprises a plurality of nozzle assemblies connected through oil conveying pipes, wherein an adapter seat is arranged on oil conveying pipe, the adapter seat comprises a pipeline connecting part, two ends of the pipeline connecting part are both communicated with the oil conveying pipe, an end of the pipeline connecting part is provided with a sealing conical face used for being connected with the oil conveying pipe in a sealed mode, the pipeline connecting part is provided with a positioning hole, the oil conveying pipe is provided with a through hole corresponding to the positioning hole, and the positioning hole is connected with the through hole through a positioning pin. The detachable lubricating oil main pipe structure is advantagedin that the lubricating oil main pipe can be replaced at will when all nozzle assemblies and all pipelines have cracks and the like and need to be replaced, interchangeability of all parts of the lubricating oil main pipe is improved, and repair cost of the engine is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of aero-engine mechanical system design, in particular to a detachable lubricating oil main pipe structure for a central transmission mechanism of an aero-engine. Background technique [0002] Lubricating oil main pipe and casing buried pipe combined with nozzle are two main structural forms for providing lubrication to the central transmission mechanism of the aero-engine, and these two structures all have certain deficiencies in the repair of the engine. Such as figure 1 As shown in Fig. 1, for a typical lubricating oil manifold structure, it is a multi-nozzle and multi-pipe welded structure. Due to the essential vibration phenomenon in the use of the engine, the lubricating oil manifold structure is prone to cracks in the nozzles or pipelines. Or open welding faults, the repair of surface crack faults can be repaired by grinding, but there is no suitable repair method for cracks with a certain depth or o...

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Problems solved by technology

[0003] In order to solve technical problems such as poor interchangeability of lubricating structures in the central transmission mechanism of the aero-engine and high repair costs of the aero-engine in the prior art, the present invention provides a detachable lubricating oil main pipe structure for the central transmission mechanism of the aero-engine, which realizes lubrication The oil main pipe can be replaced at will when there are problems such as cracks in the nozzle components and various parts of the pipeline, which can improve the interchangeability of the parts of the lubricating oil main pipe and effectively reduce the repair cost of the engine

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