Research on error compensation method of multi-channel ultrasonic flowmeter based on SVM
Abstract
The measurement process of multi-channel ultrasonic flowmeter is affected by the distribution of flow field in the pipeline, which makes the measurement results of sound channel have large errors, and finally leads to large errors in the integration results of flow. Especially when the ultrasonic flowmeter is installed near the rear of the valve, elbow and other spoiler, the influence of the flow field distribution in the pipeline on the measurement results of the ultrasonic flowmeter is difficult to avoid. Aiming at the distribution of the flow field in the pipeline behind the gate valve and its influence on the multi-channel ultrasonic flowmeter, this paper studies the influence of the opening of the gate valve, the distance between the ultrasonic flowmeter and the gate valve and the installation angle of the gate valve on the measurement error of the multi-channel ultrasonic flowmeter through CFD simulation experiments, and puts forward the error compensation model of the multi-channel ultrasonic flowmeter based on SVM, The measurement results of multi-channel ultrasonic flowmeter caused by the flow field distribution behind the gate valve are compensated, and the compensation results are compared with the flow integration results. It is found that the compensation model based on SVM proposed in this paper has better compensation effect.
Event details
- Event
- FLOMEKO 2022
- Technical Committee
- TC9
- lich@nim.ac.cn
- Place
- Chongqing, CHINA
- Time
- 1 November 2022 - 4 November 2022
- Website
- http://flomeko2022.msmk.tech/c/index.html