Multi-cavity casing pressure test device and method

Abstract

The invention discloses a multi-cavity casing pressure test device and method, the multi-cavity casing pressure test device comprises a base, a bottom cavity separation ring, a casing test piece and a cover plate, the casing test piece is a cylindrical thin-wall piece, the upper end face and the lower end face of the casing test piece are provided with outer boss surfaces extending in the horizontal direction, the outer boss surface of the lower end face is provided with a connecting hole, and the connecting hole is communicated with the bottom cavity separation ring. The connecting holes are used for being connected with a base, the base is of a disc structure, an annular protrusion is arranged on the base, the connecting holes are formed in the upper end face of the annular protrusion of the base, a bottom cavity separation ring is arranged on the base, and a cover plate is arranged above the bottom cavity separation ring. The testing device is compact in structure and easy to install and adjust, the pressure load can be accurately applied to all the cavities of the test piece through the testing device, and the purpose of checking the structural rigidity and the welding quality stability of the casing test piece in a cavity dividing mode is achieved. The device is high in universality, can be used for similar aero-engine case pressure tests, is wide in application range, and has high engineering application value.

Description

technical field [0001] The invention relates to the technical field of hydraulic strength testing, in particular to a multi-chamber casing pressure testing device and method. Background technique [0002] The aero-engine casing is an extremely important load-bearing component of the aero-engine, and plays a very important role in the structure of the aero-engine. The role of external pipelines and engine accessories, and at the same time contain the high-speed rotating parts such as internal rotors and blades when the engine is running. Most of the casings are welded structures of thin-walled parts. In order to verify the stability of the welding process and the rationality of the structural design of the casing-type thin-walled test pieces, it is necessary to conduct a hydraulic test on the casing to verify the strength reserve and welding quality of the parts. , to provide experimental basis for the state assessment and reliability evaluation of parts. However, due to th...

AI Technical Summary

Problems solved by technology

When the engine is working, the cavity not only bears the air pressure of the inner duct and the outer duct, but also has a certain pressure difference between adjacent cavities due to the difference in compression ratio. During the test, the working boundary conditions of the test piece should be simulated, and given Examination tests posed great difficulties

Images