Unlock instant, AI-driven research and patent intelligence for your innovation.

Flow electromagnetic measuring device and measuring method of multi-coil array

An electromagnetic measurement, multi-coil technology, used in measurement devices, measurement flow/mass flow, liquid/fluid solid measurement, etc., to remove power frequency interference, optimize design and layout, and improve measurement accuracy.

Active Publication Date: 2022-04-29
SOUTHWEST PETROLEUM UNIV
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a flow electromagnetic measuring device and a measuring method of a multi-coil array to solve the problems mentioned above

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flow electromagnetic measuring device and measuring method of multi-coil array
  • Flow electromagnetic measuring device and measuring method of multi-coil array
  • Flow electromagnetic measuring device and measuring method of multi-coil array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see Figure 10, the present invention provides a technical solution: a multi-coil array flow electromagnetic measuring device, including electrodes, saddle-shaped coil groups, excitation systems, crystal oscillator circuits, reset circuits, preamplifier circuits, filter circuits, multiplication circuits, and cross-correlation detection circuits , A / D conversion circuit, and keyboard, display circuit, D / A conversion module, storage module, communication interface, saddle-shaped coil group includes A array excitation coil and B array excitation coil, A array excitation coil and B array excitation coil are fixed On the outside of the measuring tube, the electrodes are placed inside the measuring tube, and the A array excitation coil and the B array excitation coil are symmetrically distributed on both sides of the tube wall of the measuring tube. Shielding cover, so an independent non-uniform magnetic field is excited in the cross-sectional area of ​​the measuring tube, su...

Embodiment 2

[0080] The measuring method of the flow electromagnetic measuring device of the multi-coil array comprises the following steps:

[0081] S1: The present invention proposes a method of using a non-uniform magnetic field for non-axisymmetric flow flow measurement. By simply comparing common coils that generate non-uniform magnetic fields, including non-uniform coils produced by rectangular coils, diamond coils, and saddle coils, etc. The effect of the magnetic field, it is determined that the saddle-shaped coil is used as the base coil of the multi-coil electromagnetic flowmeter, and the magnetic field generated by this method can be most suitable for non-axisymmetric flow flow measurement;

[0082] S2: The present invention proposes a method for optimizing the excitation coil structure, using multiple pairs of saddle-shaped excitation coils as the system excitation structure. By adopting the method of the present invention, the coil structure of the multi-coil is optimized, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a flow electromagnetic measuring device and a measuring method of a multi-coil array. / D conversion circuit, keyboard, display circuit, D / A conversion module, storage module, communication interface, select the saddle-shaped coil as the base coil of the excitation structure of the electromagnetic flowmeter; determine the optimal saddle-shaped coil angle and the optimal The number of turns; the preamplifier circuit is used for differential amplification, the flow signal is transmitted by twisted pair, and the interference source is effectively physically isolated from the signal transmission line through a steel magnetic shield; The rectangular wave is multiplied by the waveform signal to obtain the flow signal containing only the smooth band, and the DSP correlation algorithm is used to perform cross-correlation operation on the processed flow signal and the 6.25Hz low-frequency three-valued rectangular wave of the excitation signal.

Description

technical field [0001] The invention relates to the technical field of electromagnetic measurement of non-axisymmetric flow, in particular to a flow electromagnetic measurement device and a measurement method of a multi-coil array. Background technique [0002] Due to its high efficiency, convenience and accuracy, the electromagnetic flowmeter has become an indispensable flow measurement instrument in industry and life, and its application scenarios are diverse. The measurement accuracy of the electromagnetic flowmeter directly affects the normal operation of industrial and agricultural production. At present, the traditional electromagnetic flowmeter is more mature in industry. The working magnetic field of the sensor is a uniform magnetic field, and its excitation structure is mostly a single pair of Helmholtz coils. However, the uniformity of the magnetic field generated by a single pair of coils is always limited, which will limit the measurement accuracy of the electrom...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/58G01F1/60
CPCG01F1/58G01F1/586G01F1/60
Inventor 葛亮阳彩霞叶正旺肖小汀胡泽韦国晖赖欣李丹陈俊先白洋
Owner SOUTHWEST PETROLEUM UNIV