Testing device of tightness of high-pressure pipeline spherical joint of automobile engine and use method thereof

Abstract

The invention relates to the technical field of pipeline joint testing devices, in particular to a device for testing the tightness of a spherical joint of a high-pressure pipeline of an automobile engine and a using method thereof. The testing device of tightness of high-pressure pipeline spherical joint of automobile engine simulates the working conditions of the high-pressure pipeline and the spherical joint of the automobile engine, in particular to the matching of a conical surface and a spherical joint on a high-pressure pipeline of an automobile engine, namely the matching of the conical surface of the rear section of the positioning through hole and the front end of the spherical joint. The testing device of tightness of high-pressure pipeline spherical joint of automobile engine has the advantages of being stable in structure and high in matching degree, providing key parameters for the design of the spherical joint of the high-pressure pipeline, improving the test efficiencyand the test quality, and ensuring the high-pressure pipeline sealing safety of the automobile engine.

Description

technical field [0001] The invention relates to the technical field of pipeline joint testing devices, in particular to a sealing performance testing device for a high-pressure pipeline ball joint of an automobile engine and a use method thereof. Background technique [0002] At this stage, the working pressure of the high-pressure pipeline of the new hybrid electric vehicle is getting higher and higher, and the risk of pipeline leakage is also increasing. The traditional high-pressure pipeline is connected to the flared adapter in the way of conical sealing. The disadvantage is that the self-adaptive ability of the conical pier is poor and leakage is prone to occur. [0003] In order to reduce the risk of leakage of high-pressure pipelines, domestic automobile engine high-pressure pipeline manufacturers have developed a new type of high-pressure oil pipe joint with high sealing performance. Its characteristics are: rely on the traditional thread to realize the connection b...

AI Technical Summary

Problems solved by technology

Therefore, the relationship between the axial force at the joint, the contact surface pressure, the elastic-plastic deformation of the joint and the nut torque is difficult to determine. At present, the preliminary results are obtained by finite element analysis, and there are no relevant experimental methods and devices to study high-pressure pipes. Sealing performance of road ball joints

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