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Electronic flowmeter

A flowmeter, electronic technology, applied in the field of measurement, can solve the problems of flowmeter mechanical aging, short service life and damage of flowmeter, so as to improve the service life, avoid the effect of suction or disconnection in place

Pending Publication Date: 2021-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above-mentioned flowmeters all have the problem of mechanical aging. For example, the magnetism of the permanent magnet in the induction type will naturally fade away, and the mechanical action of the iron sheet inside the reed switch is prone to stress aging during use, and then the absorption failures such as incomplete coupling or disconnection, or even damage; therefore, the service life of flowmeters in the prior art is too short

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  • Electronic flowmeter

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Embodiment Construction

[0034] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0035] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0036] In this document, for the convenience of description, spatially relative terms, such as "below", "below", "lower", "above", "above", "upper", etc., may be used to describe the relationship between one element or feature and another. The relationship of elements or features in the drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the item in use or o...

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Abstract

The invention discloses an electronic flowmeter. The electronic flowmeter comprises an induction device, wherein the induction device comprises an induction coil, an impeller and a rotor, after being driven by a flowing fluid measurement object, the impeller drives the rotor to cut the magnetic field of the induction coil so as to generate induction voltage; a measuring circuit which comprises a power interface and a plurality of IGBTs, wherein the collectors of the IGBTs are connected in parallel and then are connected with the positive electrode of the power interface, the emitting electrodes of the IGBTs provided with the measuring resistors are connected in parallel and then are connected with the negative electrode of the power supply interface through the serially connected protective resistors, and the grid electrodes of the IGBTs are connected in parallel and then are connected with the induction voltage output end of the induction coil through the serially connected operational amplifiers; and a processing unit which is used for generating a measurement result according to the trunk current of the measurement circuit. According to the electronic flowmeter, the problem of stress aging of the iron sheet is solved, so that faults caused by stress aging of the iron sheet are avoided, and the service life of the electronic flowmeter is effectively prolonged.

Description

technical field [0001] The invention relates to the field of measurement, in particular to an electronic flowmeter. Background technique [0002] When performing automatic control or real-time monitoring on the transportation, storage, and processing of fluids or gases such as petrochemical, artificial gas, natural gas, and tail gas treatment, it is often necessary to measure the flow of fluids or gases through flow meters. [0003] The general-purpose flowmeters in the prior art generally include electromagnetic flowmeters, turbine flowmeters, and positive displacement flowmeters; It is transformed into an electrical signal for remote transmission; among them, signal detection methods include inductive, photoelectric, and reed switch mechanical actions to control the on-off of the circuit for current transmission. [0004] The inventor has found through research that at least the following defects exist in the prior art: [0005] The above-mentioned flowmeters all have th...

Claims

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Application Information

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IPC IPC(8): G01F1/05
CPCG01F1/05
Inventor 杨振宇李经伟
Owner CHINA PETROLEUM & CHEM CORP