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A Constant Magnetic Electromagnetic Flowmeter

An electromagnetic flowmeter, electromagnetic flow technology, applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, measuring device, etc., can solve the problem of high power consumption, high temperature and high pressure resistance, can not meet the underground high temperature and high pressure working environment, easy to occur Electrode polarization effect and other problems, to achieve the effect of low power consumption, reducing electrode polarization effect, and improving measurement accuracy

Active Publication Date: 2019-03-15
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The electromagnetic flowmeter in the prior art has high power consumption, is prone to electrode polarization effect, and its high temperature and high pressure resistance performance cannot meet the needs of the underground high temperature and high pressure working environment

Method used

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  • A Constant Magnetic Electromagnetic Flowmeter
  • A Constant Magnetic Electromagnetic Flowmeter

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0036] figure 1 It is a schematic diagram of the module structure of an embodiment of the constant magnetic electromagnetic flowmeter provided by the present invention, such as figure 1 As shown, the constant magnetic electromagnetic flowmeter includes: an electromagnetic flow sensor, a signal processing unit, a central processing unit a...

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Abstract

The embodiment of the invention provides a constantly magnetic type electromagnetic flowmeter which comprises an electromagnetic flow transducer, a signal processing unit, a central processing unit and a feedback unit. The electromagnetic flow transducer is used for detecting current signals generated by cutting magnetic induction lines when liquid flows; the signal processing unit is used for converting the current signals into voltage signals and sampling and processing the voltage signals to generate voltage sampling signals; the central processing unit is used for controlling the signal processing unit to process the current signals and further used for receiving, analyzing and processing the voltage sampling signals; a feedback circuit is used for feeding back the voltage sampling signals to the electromagnetic flow transducer according to the time cycle. By means of the constantly magnetic type electromagnetic flowmeter, the electrode polarization effect can be reduced, and measurement precision can be improved.

Description

technical field [0001] The invention relates to the technical field of fluid measurement, in particular to a constant magnetic electromagnetic flowmeter. Background technique [0002] The electromagnetic flowmeter is an instrument made by Faraday's law of electromagnetic induction that can measure the flow of conductive liquids. The electromagnetic flowmeter can convert the flow velocity or flow signal of the liquid into an induced electromotive force. Electromagnetic flowmeters are widely used in various fields due to their fast response speed and high precision. In the field of petroleum exploration, during the development of water injection oilfields, the measurement and adjustment equipment for adjusting the downhole flow rate, such as single and double flow downhole measurement and adjustment instruments, double directional and double flow downhole measurement and adjustment instruments, bridge concentric measurement and adjustment instruments, bridge eccentric layering...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/60
CPCG01F1/60
Inventor 刘合裴晓含贾德利孙福超杨清海
Owner PETROCHINA CO LTD
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