Capacitive electromagnetic flow meter used for non full package flow measurement

An electromagnetic flowmeter and flow measurement technology, applied in the application of electromagnetic flowmeters to detect fluid flow, measure flow/mass flow, liquid/fluid solid measurement, etc., can solve problems such as sensitive distribution, corrosion, and easy pollution of electrodes

Active Publication Date: 2010-05-05
安徽欧泰祺智慧水务科技有限公司
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Problems solved by technology

[0005] Aiming at the defects existing in the above-mentioned prior art, the problem to be solved by the present invention is to provide a capacitive electromagnetic flowmeter that can be used for the measurement of partial flow, which can overcome the sensitivity of the measurement of the traditional flowmeter to the distribution of the flow pattern in the measurement pipe, the electric current It is very easy to pollute, corrode and other problems, and it is necessary to calibrate different fluid media under the condition of partial flow

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  • Capacitive electromagnetic flow meter used for non full package flow measurement
  • Capacitive electromagnetic flow meter used for non full package flow measurement
  • Capacitive electromagnetic flow meter used for non full package flow measurement

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Embodiment Construction

[0015] The patent embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] attached figure 1 It is a structural schematic diagram of a capacitive electromagnetic flowmeter that can be used for partial pipe flow measurement. The electromagnetic flow sensor 1 includes a measuring tube 111, electrodes 131 to 138, shielding electrodes 121, and excitation coils 141 and 142; the measuring tube is a circular tube structure, and its manufacturing material is insulating material; the electrodes 131 to 138 are rectangular metal sheets , evenly attached to the outside of the measuring tube 111, without direct contact with the fluid to be measured, wherein the central connection line of the electrode 131 and the electrode 135 is parallel to the horizontal plane and perpendicular to the central connection line of the coil; the shielding electrode 121 is located between the electrodes 131 to 138 On the outside, t...

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Abstract

The invention relates to a capacitive type flow meter used for non full package flow measurement, comprising an electromagnetic flow sensor, a capacitance measurement module, an induced electromotive force measurement module and a control and signal processing module. The control and signal processing module controls a multi-way switch block and utilizes the electromagnetic flow sensor and the capacitance measurement module to obtain multiple group of capacitances and utilizes the electromagnetic flow sensor and the induced electromotive force measurement module to obtain multiple group of induced electromotive forces, thus being capable of obtaining in-pipeline flows under two conditions of full package and non full package. The invention can realize precise measurement on current without labelling different fluid mediums under non full package flowing condition and avoids the problems of electrode corrosion, pollution and leakage and influence of pulp fluid noise.

Description

technical field [0001] The invention relates to a flow measurement device, in particular to an electromagnetic flowmeter. Background technique [0002] At present, traditional electromagnetic flowmeters are generally sensitive to flow patterns, for example, the Chinese published patents of electromagnetic flowmeter CN1108385, electromagnetic flowmeter CN1131273, electromagnetic flowmeter and flow electromagnetic measurement method CN1097868, etc. The electromagnetic flow sensor is installed in the pipeline, and the conductive liquid flows through the electromagnetic flow sensor. The electromagnetic flow converter supplies the excitation current to the excitation coil to generate a magnetic field in the electromagnetic flow sensor, and the moving fluid cuts the magnetic field line measurement electrode to obtain the induced electromotive force. For the above structure, when any point of fluid micro-unit flows through a certain point in the measuring tube, the induced potenti...

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Application Information

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IPC IPC(8): G01F1/58G01F1/60
Inventor 徐立军曹章范士伟凌琪
Owner 安徽欧泰祺智慧水务科技有限公司
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