A liquid metal flowmeter calibration method

A technology of liquid metal and calibration method, which is applied in the direction of liquid/fluid solid measurement, measuring device, test/calibration device, etc., can solve the problems of low calibration accuracy, low safety, narrow calibration range, etc., and achieve The effect of high calibration accuracy, high security, and both security and economy

Active Publication Date: 2016-05-04
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

[0005] In order to solve the problems of the existing liquid metal flowmeter calibration device and calibration method, such as low calibration accuracy, narrow calibration range, and low safety, the present invention provides a liquid metal flowmeter calibration device and calibration method. test method

Method used

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  • A liquid metal flowmeter calibration method

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Embodiment

[0047] The liquid metal flowmeter calibration device and calibration method of the present invention are used to calibrate a permanent magnet liquid metal flowmeter, the liquid metal used is sodium, and the calibration range is 0.2-2.0m 3 / h, the temperature required for calibration is 200°C, 300°C, 400°C, and the required flow rate for calibration is 0.2m 3 / h, 0.5m 3 / h, 0.8m 3 / h, 1.1m 3 / h, 1.4m 3 / h, 1.7m 3 / h, 2.0m3 / h.

[0048] Of which: 1.2m 3 The range below / h is calibrated by the calibration method of gravity-driven constant pressure head standard volume method, repeating steps ⑷~⑹ once; 1.2m 3 The range above / h is calibrated by the standard volume method of the constant pressure head driven by the electromagnetic pump, and steps ⑾~⑿ are repeated once.

[0049] The verification results show that the liquid metal flowmeter verification device and verification method of the present invention have high verification accuracy, good data consistency, safe and appli...

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Abstract

The invention relates to a device and a method for verifying or correcting instrument equipment for measuring the flow rate. In order to solve the problems of low verification accuracy, narrow verification range, low safety and the like of an existing verifying device and verifying method of a liquid metal flowmeter, the invention provides a verifying device and a verifying method of a liquid metal flowmeter. The device comprises a storage tank, a heater, an electromagnetic pump, a main measuring cylinder, an auxiliary measuring cylinder, a preheater, a liquid metal flowmeter connector A, a liquid metal flowmeter connector B and a vapor trap. The verifying method employing the verifying device is used for verifying different measuring ranges of the liquid metal flowmeter in a segmental verifying mode. The verifying device of the liquid metal flowmeter provided by the invention is an original standard device, is capable of realizing actual flow verification on the transfer flow magnitude or the test accuracy of the liquid metal flowmeter, and is high in verification accuracy, large in verification measuring range, high in safety, low in cost and excellent in applicability.

Description

technical field [0001] The invention relates to a verification or correction device and method for instrument equipment used to measure flow, in particular to a liquid metal flowmeter verification device and verification method. Background technique [0002] Flow standard devices can be divided into two categories: original standard devices and transfer standard devices according to the value traceability system. The original standard device uses the basic quantity length (derived as volume) or mass and time to comprehensively derive the flow rate. Compared with the transfer standard device that uses the standard flowmeter for value transfer, the original standard device has high precision, complex system composition, and large investment. Usually, flow measurement research institutes and large-scale flow meter factories mainly focus on setting original standard devices. [0003] For liquid metal flowmeters (such as: permanent magnet, electromagnetic, differential pressure,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F25/00
Inventor 毕可明冯波卫光仁柴宝华魏国锋杨夷龙俞伊韩冶翟丽娜
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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