Molten salt flow calibration facility by dynamic weighing method base on argon pressure balance principle

Chao Chen, Jin Song, Yiping Liu, Jinchuan Wu

Abstract

Thorium-based molten salt has the characteristics of high temperature, low pressure, high chemical stability and high heat capacity, which can be used as coolant for the molten salt reactor. The hightemperature molten salt flow meters need to measure, display and record the flow parameters in the reactor of molten salt circuit, and monitor the operating conditions of the molten salt reactor equipment, ensuring the safe and reliable operation of the reactor. However, there is no good calibration method for the high-temperature molten salt flow meter in China. <BR />We have established high-temperature molten salt flow calibration facility by dynamic weighing method base on argon pressure balance principle. The flow range is (1～30) m³/h, and the operating temperature range is from 600°C to 650 °C. The expanded uncertainty is Urel=1.3% (k = 2). The calibration facility has the characteristics of using less amount of molten salt, fast response and stable temperature. The configuration of the facility, working principle, main technical specification, data processing methods and uncertainty evaluation are described in this paper. High-temperature molten salt flowmeter of DN25-DN50 can be calibrated in the facility，the traceability problem of the high-temperature molten salt flowmeters can be solved.

Download

IMEKO-TC9-2019-005.pdf

DOI

-

IMEKO TC

TC9 - Flow Measurement

Back to the proceedings