高温蒸汽带流变截面管道声功能样件声学性能测试方法
By correcting the angle between the oblique sound source and the axial direction of the main pipeline and using a multi-parameter coupled acoustic transfer matrix, the error problem in acoustic performance testing of variable cross-section pipelines under high temperature and high pressure steam environment was solved, achieving high-precision and high-reliability acoustic performance measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN TEXTILE UNIV
- Filing Date
- 2026-05-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot effectively test the acoustic performance of variable cross-section pipes under high temperature and high pressure steam environments, resulting in large discrepancies between test results and actual performance.
The axial propagation wavenumber is corrected by using the angle between the oblique sound source and the main duct axis. Combined with the multi-parameter coupled acoustic transfer matrix and the dual-microphone wave decomposition model, the total measurement transfer matrix of the system is solved by regularization method, eliminating the influence of upstream and downstream devices, and accurately calculating acoustic performance parameters.
It has achieved high-precision and high-reliability testing of acoustic functional prototypes of variable cross-section pipelines under high-temperature steam environment, adapting to complex service environments, eliminating measurement errors caused by inherent microphone mismatch and high-temperature drift, and improving the stability and accuracy of the testing system.
Smart Images
Figure CN122193417B_ABST