一种高精度超声燃气声速检测方法及系统
By calibrating the delay time in air and testing the total propagation time of the gas in a dual-path ultrasonic channel, and then calculating the sound velocity using simultaneous equations, the error problem caused by changes in gas composition in gas sound velocity detection was solved, achieving high-precision gas sound velocity detection and flow measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- QINGDAO ITECHENE TECH CO LTD
- Filing Date
- 2026-06-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for detecting the velocity of gas sound suffer from time drift errors due to changes in gas composition, and gas chromatography analysis methods are expensive and cannot meet the needs for rapid on-site calibration.
By employing transducer pairs with consistent impedance phase zero crossings, and by calibrating the delay time in air and testing the total propagation time of the gas in a dual-path ultrasonic channel, the velocity of sound is calculated using simultaneous equations, providing a simplified and accurate calculation formula that reduces reliance on fixed velocity lookup tables.
It achieves high-precision sound velocity detection in scenarios with unknown gas composition, reduces transducer screening costs, improves engineering applicability, calculates the true sound velocity under the current gas composition in real time, and supports the accuracy of gas flow measurement.
Smart Images
Figure CN122410071A_ABST