A sealing ring test device with deformation error compensation

Abstract

The invention discloses a sealing ring test device with deformation error compensation, which comprises an upper connecting plate and a lower connecting plate, the top of the upper connecting plate is fixedly connected with the bottom of the upper pressure plate, and the lower connecting plate is placed on the lower pressure plate. And the lower connecting plate is facing the upper connecting plate, the sealing ring test piece is placed on the top surface of the lower connecting plate, the sealing ring is connected between the edge of the upper platen and the edge of the lower platen, and the bottom surface of the lower connecting plate is also The main electric heating wire is set, and the top of the sealing ring test piece is in close contact with the bottom of the upper connecting plate; the high-pressure air inlet pipe passes through the lower pressure plate and the lower connecting plate to communicate with the high-pressure cavity, and the internal pressure ventilation pipe passes through the lower pressure The disc communicates with the inner cavity. The sealing ring test device with deformation error compensation of the present invention reduces the thermal energy, mechanical energy and high-pressure gas energy required for the sealing ring test, improves the measurement accuracy of the loading force and deformation of the test piece, and improves the controllability of the pressure ring force.

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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