Sealing ring test device with deformation error compensation function

Abstract

The invention discloses a sealing ring test device with a deformation error compensation function, which comprises an upper connecting plate and a lower connecting plate. The top end of the upper connecting plate is fixedly connected with the bottom end of an upper pressing disc. The lower connecting plate is placed on a lower pressing disc and right faces the upper connecting plate. A sealing ring test piece is placed on the top face of the lower connecting plate. A sealing ring is connected between the edge of the upper pressing disc and the edge of the lower pressing disc. A main electric heating wire is further arranged on the bottom face of the lower connecting plate. The top end of the sealing ring test piece is in close contact with the bottom end of the upper connecting plate. A high-pressure air inlet pipe penetrates through the lower pressing disc and the lower connecting plate to be communicated with a high-pressure cavity, and an inner pressure ventilation pipe penetrates through the lower pressing disc to be communicated with an inner cavity. According to the sealing ring test device with a deformation error compensation function, heat energy, mechanical energy and high-pressure gas energy required by a sealing ring test are reduced, the measurement precision of the loading force and the deformation amount of a test piece is improved, and the controllability of thering pressing force is improved.

Description

technical field [0001] The invention relates to the technical field of aviation test equipment, in particular to a sealing ring test device with deformation error compensation. Background technique [0002] At present, China's aero-engine independent innovation is at a critical stage. As a sealing device in an aero-engine, the sealing ring needs to isolate external impurities from the working environment inside the engine. As the thrust and combustion efficiency of aero-engines are getting higher and higher , The tight working environment is becoming more and more challenging. Therefore, the simulated working condition test of the sealing ring is particularly necessary. [0003] For most existing similar test devices, the test method is that the lower pressure plate directly acts on the sealing ring, the interior is heated and filled with high-pressure gas. This test method has the defects of large measurement errors and potential safety hazards. Since the internal space o...

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Problems solved by technology

[0003] For most of the existing similar test devices, the test method is that the lower pressure plate directly acts on the sealing ring, the interior is heated and filled with high-pressure gas. This test method has the defects of large measurement errors and potential safety hazards.

Since the internal space of the testing machine is filled with a large amount of high-pressure gas, the reaction force acting on the upper and lower pressure plates is very large. This force must be resisted by the loading force of the testing machine, which affects the actual test force that needs to act on the test ring and wastes a lot of time. Mechanical energy

Similarly, due to the sharp increase of the loading force, the structural strength of the pressure plate must also be enhanced, so the mass of the pressure plate also increases sharply, which greatly increases the heating power required by the testing machine, which is likely to cause energy waste

[0004] Since the testing machine has a built-in large space of high-pressure gas, it must be sealed with a high-pressure container to meet the pressure requirements of several MPa, and the use of high-pressure container sealing will cause a very large dynamic friction force between the pressure plate connecting rod and the high-pressure container, resulting in inaccurate accuracy. Measuring the loading force applied to the test piece

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