超声测流装置的实验室测试与优化

doi:10.3969/j.issn.1000-1158.2021.10.04

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Abstract In order to improve the accuracy of online flow calibration for large diameter pipeline, a set of ultrasonic flow measurement device is established. The probe installation technical process and geometric parameter measurement method are optimized for practical use. The flow rate model is studied and flow rate calibration under different probe protrusion state is done in the laboratory. The configuration of double-plane 4-path is installed for a DN400 pipe, and three probe protrusion states are tested to get a best solution based on flow error analysis. The experiments shows that the probe protrusion state has a significant impact on the flow measurement error of the device, and flow measurement results increases with the increase of probe insertion depth. The full contraction state is with the best linearity, and the practical installation with this state can get the best flow measurement accuracy with 0.2 level after a coefficient correction. The ultrasonic flow measurement device can meet the accuracy requirements of online flow calibration for 1.0 level large diameter pipeline after laboratory optimization.

Key words： metrology flow measurement ultrasonic flow measurement device online calibration coefficient correction probe status

Received: 09 February 2020 Published: 18 October 2021

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TB937

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	LIU Dun-li
	CAI Qin
	HU He-ming

Cite this article:

LIU Dun-li,CAI Qin,HU He-ming. Laboratory Test and Optimization of Ultrasonic Flow Measurement Device[J]. Acta Metrologica Sinica, 2021, 42(10): 1282-1287.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2021.10.04 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2021/V42/I10/1282

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