Air dynamic bearing seal test device

By using the clamping mechanism, the first testing mechanism, and the second testing mechanism of the air dynamic bearing sealing test device, the problem of inaccurate sealing tests in the prior art has been solved, enabling accurate detection and problem identification of the air dynamic bearing sealing performance, and improving the accuracy and uniformity of the test.

CN117346977BActive Publication Date: 2026-07-24NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Filing Date
2023-10-26
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the existing technology, the sealing performance of air dynamic bearings is tested only by disassembling the parts, ignoring the sealing performance during use, which results in insufficient accuracy of the test.

Method used

A sealing test device for aerodynamic bearings was designed, including a clamping mechanism, a first test mechanism, and a second test mechanism. The sealing performance is tested in three ways: a first sealing test and a second sealing test. The device utilizes a wind speed sensor and soapy water for testing, and adaptive clamping and application of soapy water ensure test accuracy.

Benefits of technology

It enables precise testing of the sealing performance of pneumatic bearings, allowing for preliminary identification of sealing problems, reducing soap water evaporation, ensuring more even application, and resulting in more accurate test results.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117346977B_ABST
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Abstract

The application relates to the field of aerodynamic pressure bearing testing, and discloses an aerodynamic pressure bearing sealing test device, which comprises a base, a clamping mechanism for self-adaptive centering and clamping of an aerodynamic pressure bearing, a first test mechanism arranged at an air inlet hole of the aerodynamic pressure bearing and used for first heavy sealing test of the aerodynamic pressure bearing, and a second test mechanism used for second heavy sealing test of the aerodynamic pressure bearing. The first heavy sealing test comprises two different sealing tests, and the second heavy sealing test comprises one sealing test. Therefore, in the scheme, sealing test of the aerodynamic pressure bearing is realized through three different modes, the test result is more accurate, the corresponding test positions are different during the two heavy sealing tests, and therefore, the sealing problem can be preliminarily judged according to the test result.
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