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Electromagnetic flow sensor of non-insulated measuring pipe

A technology of electromagnetic flow and measuring tubes, which is applied in the application of electromagnetic flowmeters to detect fluid flow, volume/mass flow generated by electromagnetic effects, etc., which can solve problems affecting accurate flow measurement and difficulty in applying electromagnetic flow sensors, etc., and achieve easy application Effect

Inactive Publication Date: 2006-06-28
李斌
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the flexible measuring tube will affect the accurate measurement of the flow rate, and it is difficult to apply it to a general-purpose electromagnetic flow sensor

Method used

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  • Electromagnetic flow sensor of non-insulated measuring pipe
  • Electromagnetic flow sensor of non-insulated measuring pipe
  • Electromagnetic flow sensor of non-insulated measuring pipe

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Embodiment Construction

[0017] specific implementation plan

[0018] A preferred embodiment of the present invention is as follows: see figure 1 .

[0019] The electromagnetic flow sensor of the non-insulated measuring tube includes a rigid measuring tube 1 whose internal diameter is D for the flow of the measured fluid, and an excitation unit 2 that generates a magnetic field B perpendicular to the flow direction of the fluid on the rigid measuring tube 1; The fluid in the rigid measuring tube 1 has a flow velocity V. Under the action of the magnetic field B, the fluid in the rigid measuring tube 1 generates an induced potential E, E=K0×D×B×V, and K0 is a coefficient; it is characterized in that in the magnetic field B There are two measuring points a and b on the outer wall of the rigid measuring tube 1 within the scope of action, which directly leads to the output signal X for measurement, X=K1×K2×E, K1 is in the rigid non-insulated position with the two points a and b A position-dependent coeff...

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Abstract

An electromagnetic flow rate transducer of no insulated measurement tube consists of a rigid measurement tube with internal diameter of D to let fluid to be measured flow through and an excitation unit set on rigid measurement tube for generating magnetic field B vertical to fluid flowing direction. It is featured as generating induction potential E of fluid with flowing speed V in said tube under action of magnetic field B, setting a and B measuring points in action scope of magnetic field B to directly lead output signal X out for measuring.

Description

technical field [0001] The invention relates to an electromagnetic flow sensor, in particular to an electromagnetic flow sensor of a non-insulated measuring tube. technical background [0002] The principle of the electromagnetic flow sensor is: the fluid flows in a measuring tube with a diameter of D under the action of a vertical magnetic field B, and the fluid cuts the magnetic field line to generate an induced potential E proportional to the fluid velocity V in the direction perpendicular to the magnetic field and flow, E= K0×D×B×V, K0 is the coefficient, and E is taken as the output signal. Existing common electromagnetic flow sensors all use insulating measuring tubes so as not to reduce the output. There are two ways to obtain the induced potential: one is to drill a hole in the wall of the insulating measuring tube, install a conductive measuring electrode, and draw the induced potential through the electrode contacting the fluid and directly use it as an output sig...

Claims

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Application Information

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IPC IPC(8): G01F1/58
Inventor 李斌沈天飞刘可昌袁春华
Owner 李斌
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