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High-accuracy electromagnetic eddy flow meter

An electromagnetic flowmeter technology, applied in the application of electromagnetic flowmeters to detect fluid flow, volume/mass flow generated by electromagnetic effects, and through detection of dynamic effects of fluid flow, etc., can solve poor anti-interference ability and limited application range , Measurement accuracy and accuracy are difficult to improve, etc., to achieve the effect of improving measurement accuracy, improving signal-to-noise ratio, and reducing interference noise

Inactive Publication Date: 2015-01-07
中山欧麦克仪器设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vortex flowmeter has poor anti-interference ability in the application, and it is difficult to improve the measurement accuracy and accuracy
Although the electromagnetic flowmeter has high precision, it is expensive with a large pipe diameter and its application range is limited

Method used

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  • High-accuracy electromagnetic eddy flow meter

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Experimental program
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Effect test

Embodiment Construction

[0019] refer to figure 1 , figure 1 It is a structural schematic diagram of a specific embodiment of the present invention. As shown in the figure, a high-precision electromagnetic eddy current flowmeter includes:

[0020] A vortex splitter 2, the vortex splitter 2 is arranged on the upstream of the measuring pipe, so that the fluid generates a swirling vortex;

[0021] Electrode 1, the electrode 1 is arranged on the side of the measuring tube, and is used to detect the potential generated by the eddy current fluid cutting the magnetic field lines in the measuring tube;

[0022] A magnetic body 3, the magnetic body 3 is arranged correspondingly to the electrode 1;

[0023] A signal processing circuit, the signal processing circuit is connected to the electrode 1, and is used to process the potential signal detected by the electrode 1;

[0024] an A / D converter connected to a signal processing circuit for converting an analog signal into a digital signal;

[0025] a micropr...

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PUM

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Abstract

The invention discloses a high-accuracy electromagnetic eddy flow meter which comprises an eddy distributing plate, a magnetic body, an electrode, a signal processing circuit, an A / D converter and a microprocessor. An eddy is produced in a tube body through the eddy distributing plate, an eddy fluid cuts the magnetic force line of the magnetic body to produce potential, the electrode senses the potential, flow information can be obtained though the signal processing circuit, the A / D converter and the microprocessor, a signal is sequentially transmitted to an amplifying circuit and a filter circuit to be output, the influence of interference noise is reduced, fundamental waves of a flowing speed signal are obtained, the powers of various interference noises can be reduced with decreasing band width, signal to noise ratio is improved, and the measurement accuracy of the electromagnetic eddy flow meter is improved.

Description

technical field [0001] The invention relates to a high-precision electromagnetic vortex flowmeter. Background technique [0002] When a cylinder with a non-streamlined cross-section (vortex generator) whose axis is perpendicular to the flow direction of the fluid is inserted into the flowing fluid, two rows of internally rotating and interlaced vortices will be generated downstream of it. Within a certain flow range The separation frequency of the vortex is directly proportional to the column side fluid flow rate. The flow velocity and flow rate of the fluid can be calculated by detecting the separation frequency of the vortex. This is a vortex flowmeter usually based on the Karman vortex principle. A magnetic field is set around the conductive fluid, and the conductive fluid cuts the magnetic force lines in the magnetic field to generate an electric potential, so as to calculate the flow velocity of the measured fluid. This is an electromagnetic flowmeter based on Faraday'...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/32G01F1/58
Inventor 石冰鑫李明达袁登通兰维
Owner 中山欧麦克仪器设备有限公司