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Gas-solid two-phase flow parameter detector

A technology of parameter detection and phase flow, which is applied in the field of gas-solid two-phase flow parameter detection devices, can solve problems such as inability to effectively measure a single flow parameter, and achieve the effects of simple installation, strong anti-interference ability, and low cost

Active Publication Date: 2013-01-02
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

However, the resonance signal contains both the velocity effect component and the two-phase flow concentration component, which cannot effectively measure a single flow parameter.

Method used

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  • Gas-solid two-phase flow parameter detector

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] See Figure 1 and figure 2 , a probe 2 is respectively installed upstream and downstream in the pneumatic conveying pipeline 1 (50 mm apart in this embodiment), and a piezoelectric sensor 4 is installed on the outside of the pipeline where the probe 2 is located. 3 connections. The static detection signal output by the static detection circuit 3 and the resonance signal output by the piezoelectric sensor 4 are connected to the data acquisition module 6 and the analysis and calculation module 7 through the resonance signal conditioning circuit.

[0035] The working principle of the electrostatic detection circuit and piezoelectric sensor combined measurement method of gas-solid two-phase flow parameters is as follows: In pneumatic transmission, due to the collision between solid particles, the collision between particles and the pipe wall, and the...

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Abstract

The invention belongs to the technical field of fluid measurement, and relates to a gas-solid two-phase flow parameter detector. The gas-solid two-phase flow parameter detector comprises two probes, a static electricity detection circuit, a piezoelectric transducer, a resonance signal conditioning circuit, a data acquisition module and an analysis computing module, wherein the two probes are respectively fixed in different positions in a pipeline; the static electricity detection circuit is connected with the two probes and is used for magnifying and filtering a static electricity charge detected by a detection electrode and obtains a static electricity detection signal; the piezoelectric transducer is connected to one or two of the probes and is used for detecting resonance signals of the probes, the resonance signal conditioning circuit is used for magnifying and filtering the resonance signals and obtains a resonance detection signal; and the static electricity detection signal andthe resonance detection signal are input into the analysis computing module through the data acquisition module. The gas-solid two-phase flow parameter detector has the advantages of simple structure, low cost and easiness in installation.

Description

Technical field [0001] The invention belongs to the technical field of fluid measurement, in particular to a gas-solid two-phase flow parameter detection device. Background technique [0002] The study of gas-solid two-phase flow involves a wide range of industrial production processes. Online measurement of key parameters to achieve process optimization control is of great significance for improving production efficiency, reducing energy consumption, and saving energy. At present, for solid velocity measurement, there are mainly relevant velocity measurement methods based on monitoring principles such as capacitance, electrostatic induction, and γ-rays [1-6], Doppler velocity measurement methods and spatial filtering methods based on ultrasonic, optical, and microwave principles, etc.[ 7-9]. For concentration measurement, there are mainly electrical methods based on the principles of capacitance and electrostatic induction [10-15]; attenuation and absorption methods based ...

Claims

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Application Information

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IPC IPC(8): G01F1/56
Inventor 王超徐占艳秦伟刚
Owner TIANJIN UNIV
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