High and low temperature environment dustproof sealing ring sealing performance test device and test method

Abstract

The invention provides a high-low temperature environment dustproof sealing ring sealing performance testing device which comprises a high-low temperature box and a testing mechanism arranged in the high-low temperature box, and the testing mechanism comprises a mounting support, a driving mechanism, a sealing ring mounting shaft, a tested sealing ring and a collector. The tested sealing ring is arranged at the bottom of the mounting support in a penetrating mode, the lunar dust environment is simulated in a dust burying mode, the sealing ring mounting shaft penetrating in the tested sealing ring is powered by the driving mechanism, and the sealing ring mounting shaft is made to rotate relative to the sealing ring. The invention further provides a high-low temperature testing method. The device is adopted, the testing mechanism is arranged in the high-low temperature box, the temperature of the simulated lunar surface environment is set, the driving mechanism is started to rotate for certain circles and then is stopped, the collector is dismounted, the amount of dust passing through the collector is detected through a magnifying lens, the diameter of the collector is estimated, and whether the collector meets index requirements or not is determined. According to the device and method, testing and detecting are integrally designed, the high-low temperature testing environment meeting the practical environment is set, and the sealing performance of the sealing ring can be judged visually and accurately.

Description

technical field [0001] The invention relates to a verification technology for the sealing performance of a dustproof sealing ring, in particular to a testing device and a testing method for the sealing performance of a dustproof sealing ring in a high and low temperature environment. Background technique [0002] On the surface of the moon, the high temperature during the day can reach 150°C, and the low temperature during the night can reach -180°C. The temperature difference is huge, and the moon dust is charged with static electricity. During the working process of the lunar surface detector, if the exposed mechanism and moving joints of the detector do not take effective dust-proof measures, the moon dust entering the mechanism will increase the friction of the moving parts, reduce the transmission efficiency, and cause the mechanism to be stuck in severe cases. . Therefore, sealing measures must be taken to prevent moon dust from entering the mechanism, thereby elimina...

AI Technical Summary

Problems solved by technology

This patent has the following disadvantages: First, due to the large difference between moon dust and ground dust, the dust movement patterns caused by the earth's gravity, atmosphere and other environments are also different, and the dust in the dust cover cannot reach the dust on the moon by driving the blades to rotate. The effect of dust and dust suspension cannot evaluate the dustproof effect of the lunar surface; secondly, the above-mentioned patent judges the sealing performance by testing the amount of dust on the sealing lip, but even if there is a small amount of dust between the sealing lips, it will not affect the dustproof effect. Affect the normal operation of the mechanism, because the dust particles on the moon are finer and more penetrating, and the dust-proof technical means are more difficult in the lunar environment, so the test effect of the above patent is not good; third, if it is to measure the dust between the lips, During the disassembly process of the sealing ring, it is easy to bring in external dust, even the dust in the experimental device, which is easy to cause secondary pollution

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