An experimental system for measuring liquid metal flow velocity on the surface of liquid metal pump blades
A liquid metal, flow velocity measurement technology, applied in fluid velocity measurement, full-field flow measurement, velocity/acceleration/impact measurement, etc. high precision effect
Active Publication Date: 2021-06-22
XI AN JIAOTONG UNIV
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Problems solved by technology
This system is not suitable for the measurement of the flow rate of liquid metal in moving structural equipment, and it is difficult to apply it to the continuously rotating pump blades. Under the external strong magnetic field, cutting the magnetic induction line when the blade rotates will affect the measurement, making the measurement difficult.
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Embodiment Construction
[0030] Taking the main pump on the lead-bismuth alloy fast reactor circuit as an example, the embodiment of the present invention is further described in conjunction with the accompanying drawings.
[0031] Since each blade of the liquid metal pump has the same shape, by arranging probe arrays at different spatial positions of different pump blades and dispersing the probes on different pump blades, the lead-bismuth alloy on the entire wall surface of a pump blade can be measured. The relative velocity between the blades.
[0032] like figure 1 As shown, the liquid metal flow rate measurement experimental system at the surface of a liquid metal pump blade of the present invention is characterized in that it includes a magnetic field generation system arranged on the pump shaft 1-1 and the pump casing 1-2 of the liquid metal pump, and is arranged on The probe array 1-8 at the surface of the pump blade 1-9 of the liquid metal pump is connected through the conductive metal wire ...
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Abstract
The invention discloses an experimental system for measuring the liquid metal flow velocity on the surface of the liquid metal pump blade, which comprises a magnetic field generating system arranged on the pump shaft and the pump shell of the liquid metal pump, and a probe arranged on the surface of the pump blade of the liquid metal pump The probe array is connected to the output signal line in the pump shaft through the conductive metal wire, the output signal line is connected to the potential acquisition system, the potential acquisition system is connected to the converter, and the converter outputs the relative position of the liquid metal on the entire blade surface flow rate. The measurement system can realize the accurate measurement of the relative flow velocity of the fluid on the vane of the liquid metal pump. The invention overcomes the difficulty that the flow velocity of the liquid metal dynamic system is difficult to measure, and can be used for the research on the corrosion rate of the liquid metal to the wall surface material.
Description
technical field [0001] The invention belongs to the technical field of flow velocity measurement, and in particular relates to an experimental system for measuring the flow velocity of liquid metal on the surface of the vane of a liquid metal pump. Background technique [0002] Due to its good thermal conductivity and other advantages, liquid metal is used as a coolant material for reactors. At present, research on small modular fast reactors at home and abroad is mainly focused on the conceptual design of stationary reactors. Most of the primary circuits use natural circulation. The pressure difference required for natural circulation cannot meet the requirements of compact size for mobile operation of nuclear power reactors. In order to solve this problem, the main circulation pump is widely used to drive the circulation of the coolant in the primary circuit. The main circulation pump plays the role of pressurizing the coolant to meet the operating requirements of the equ...
Claims
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IPC IPC(8): G01P5/00G01P5/08
CPCG01P5/001G01P5/08
Inventor 李良星赵浩翔李翔宇王凯琳
Owner XI AN JIAOTONG UNIV