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Split type vortex street effusion meter

A vortex flowmeter, a split-type technology, applied in the direction of volume/mass flow generated by mechanical effects, dynamic effects by detecting fluid flow, etc. Effects of Interference Ability

Inactive Publication Date: 2008-04-09
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This vortex flowmeter cannot be used in high temperature environment, because its signal processing circuit cannot work normally under high temperature conditions

Method used

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  • Split type vortex street effusion meter
  • Split type vortex street effusion meter
  • Split type vortex street effusion meter

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Experimental program
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Embodiment Construction

[0034] The invention will be further described below in conjunction with the accompanying drawings.

[0035] The design concept of the present invention is to separate the vortex flow sensor, temperature and pressure sensor and conditioning circuit module from the digital signal processing module, and connect them with a shielded cable. Place the sensor and conditioning circuit on the site to be tested, while the digital signal processing module is placed at a normal temperature away from high temperature. This is because the output signal of some sensors is very weak and the output impedance is high, and direct long-distance transmission will be disturbed by noise. Therefore, the sensor and the conditioning circuit module are made in a meter and placed on the site under test. However, even if devices such as DSP work at normal temperature, their own temperature will be tens of degrees higher than the ambient temperature. If they work in an environment of 100°C, their core wil...

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Abstract

The invention relates to a flowmeter, in particular to a split-typed vortex flowmeter. The invention consists of sensors, a conditioning circuit module and a digital signal processing module, three kinds of sensors and the conditioning circuit module are positioned at a high temperature measured field, while the digital signal processing module is positioned in normal temperature environment, the modules are connected to each other through a shield cable, the signals are transformed in the form of differential signal. The invention solves the technical problem that original techniques can not be applied in high temperature environment; the invention can be applied in high temperature environment and special occasions which needs split-typed flowmeter. The invention has the advantages of good anti-jamming capability and high reliability.

Description

technical field [0001] The invention relates to a flow measuring instrument, in particular to a split-type vortex flowmeter with a digital signal processor (DSP) as the core. Background technique [0002] Vortex flowmeter is a widely used flowmeter. The existing vortex flowmeter integrates the conditioning circuit of the sensor and the signal processing part, which is called an integrated signal processing system. This vortex flowmeter cannot be used in a high temperature environment, because its signal processing circuit cannot work normally under high temperature conditions. Therefore, in some industrial sites with high temperature, in order to ensure the stability of the system, it is necessary to separate the conditioning circuit of the sensor from the signal processing part, and keep the signal processing part away from the high temperature environment. In addition, some special installation sites also require split meters. For example, if the location of the pipeline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/32
Inventor 徐科军周杨朱志海王肖芬刘三山黄云志
Owner HEFEI UNIV OF TECH
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