Pressure test system of combustion chamber outer casing

Abstract

The invention discloses a pressure test system of a combustion chamber outer casing, comprising a test piece (4) which is the combustion chamber outer casing; a fixed base (1) is vertically inserted into the test piece; the upper and lower ends of the fixed base are hermetically connected with the upper and lower ends of the test piece; an oil inlet adapter (2) which is transversely distributed ismounted at the bottom of the fixed base; one end of the oil inlet adapter is communicated with an oil outlet of an oil pump (5) through an oil outlet pipeline (18); the other end of the oil inlet adapter is communicated with the lower part of the inner cavity of the test piece through an oil through hole (17) in the bottom of the fixed base; the upper part of the internal cavity of the test pieceis communicated with an oil inlet of an oil pump (5) through an oil return port adapter (8) and an oil return pipeline (19); a strain gauge (16) is installed on the surface of the inner wall of the test piece. According to the invention, pressure load loading can be carried out on the combustion chamber outer casing, strain data can be measured in time, and the method can be used for examining the structural strength of the combustion chamber outer casing.

Description

technical field [0001] The invention relates to the technical field of testing an aero-engine combustion chamber, in particular to a pressure test system for a combustion chamber. Background technique [0002] At present, the combustion outer casing of an aero-engine is an important part of an aero-engine. It mainly bears the circumferential force formed by the internal and external pressure difference, which accounts for most of the stress of the outer casing. Therefore, the bearing capacity of the casing structure outside the combustion chamber is an important index for its design assessment. [0003] In order to assess the rationality of the structural strength design of the outer casing of the combustion chamber, it is necessary to design a reasonable test system and test method to realize the loading of the axial force on the outer casing, and to measure the stress of the key parts of the outer casing at the same time, and to carry out the analysis with the finite eleme...

AI Technical Summary

Problems solved by technology

[0005] However, there is currently no technology that can load the casing outside the combustion chamber with a pressure load and measure the strain data of the casing outside the combustion chamber in time, so as to assess the structural strength of the casing outside the combustion chamber

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