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Permanent magnetic liquid metal vortex street flowmeter and application thereof

A vortex flowmeter and liquid metal technology, applied in liquid/fluid solid measurement, test/calibration volume flow, measurement flow/mass flow, etc., can solve the problem that the flowmeter cannot be used in the field of liquid metal flow measurement, and achieve fluid Insensitivity to flow characteristics, good vibration resistance, and high measurement accuracy

Inactive Publication Date: 2017-09-19
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Claims
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Problems solved by technology

[0002] Due to the inherent characteristics of liquid metal, such as high temperature, active chemical properties, and often used in high-irradiation environments, conventional flowmeters cannot be used in the field of liquid metal flow measurement
Usually, permanent magnet flowmeters are used for liquid metal flow measurement, but it is usually impossible to obtain accurate accuracy through real flow calibration

Method used

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  • Permanent magnetic liquid metal vortex street flowmeter and application thereof
  • Permanent magnetic liquid metal vortex street flowmeter and application thereof
  • Permanent magnetic liquid metal vortex street flowmeter and application thereof

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0027] The structure of the exemplary permanent magnet liquid metal vortex flowmeter of the present invention is as follows Figure 1-3 As shown, it includes a primary sensor (including a magnetic steel assembly 1, an electrode 2, a pipe 3, a vortex generator 4, a flat washer 5, an upper pipe clamp 6, a bolt 7, and a lower pipe clamp 11), a protective cover 8, and a secondary instrument 9 10. Signal cable.

[0028] The magnetic steel component 1 provides a stable magnetic field for the generation of the measurement signal, and is composed of a permanent magnet, a magnetic pole, and a yoke (magnetic conductor).

[0029] The upper pipe clamp 6 and the lower pipe clamp 11 provided on the pipe 3 are used to clamp and fix the pipe 3 in the middle of the magnetic steel assembly 1 . The upper pipe clamp 6 and the lower pipe clamp 11 ar...

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Abstract

The invention belongs to the technical field of flow measurement, and relates to a permanent magnetic liquid metal vortex street flowmeter and application thereof. The permanent magnetic liquid metal vortex street flowmeter comprises a primary sensor, a secondary meter and a signal cable, wherein the primary sensor comprises a magnetic steel assembly, an electrode, a pipeline and a vortex generating body; the magnetic steel assembly provides a stable magnetic field for generating measuring signals; the pipeline is clamped in the middle of the magnetic steel assembly; the vortex generating body is arranged in the pipeline and used for transforming the three-dimensional pipe flow in the pipeline into a two-dimensional vortex current; the electrode is arranged on the pipeline, and the axial line of the electrode, the axial line of the pipeline and the magnetic line of force of the magnetic field generated by the magnetic steel assembly are mutually perpendicular; and the secondary meter is connected with the electrode through the signal cable and used for calculating the output signals of the electrode by a correlation method. The liquid metal vortex street flowmeter and application thereof provided by the invention are capable of measuring the flow rate of liquid metal by a simple structure at high precision in a wide range, and realizing on-line calibration of the flow rate of the liquid metal.

Description

technical field [0001] The invention belongs to the technical field of flow measurement, and relates to a permanent magnet liquid metal vortex flowmeter and its application. Background technique [0002] Due to the inherent characteristics of liquid metal, such as high temperature, active chemical properties, and often used in high-irradiation environments, conventional flowmeters cannot be used in the field of liquid metal flow measurement. Usually, permanent magnet flowmeters are used for liquid metal flow measurement, but it is usually impossible to obtain accurate accuracy through real flow calibration. [0003] The permanent magnet liquid metal vortex flowmeter is based on the Karman vortex street principle, that is, by measuring the vortex frequency behind the vortex generator, the flow rate of liquid metal is measured according to the relationship between the vortex frequency and the fluid flow rate. Contents of the invention [0004] The primary purpose of the pre...

Claims

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Application Information

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IPC IPC(8): G01F1/32G01F25/00
CPCG01F1/325G01F25/10
Inventor 张媛媛杨建伟吴宏岩崔国生董康乐赵保平金佳佳刘小申
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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