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Linear electrostatic sensor array method for measuring particle speed and device thereof

An electrostatic sensor and particle velocity technology, applied in measuring devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc., can solve the problems of reducing the filter space selectivity, affecting the accuracy of velocity measurement, and the wave peak is not obvious, etc., to achieve The effect of convenient signal processing, simple structure and low price

Active Publication Date: 2012-04-25
SUZHOU HUAMAO ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output signal frequency range of a single ring-shaped electrostatic sensor is wide, which reduces the spatial selectivity of the filter. On the power spectrum characteristic curve, it shows that each point has a large degree of dispersion, the peak is not obvious, and the signal-to-noise ratio is low, which affects the Accuracy of speed measurement

Method used

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  • Linear electrostatic sensor array method for measuring particle speed and device thereof
  • Linear electrostatic sensor array method for measuring particle speed and device thereof
  • Linear electrostatic sensor array method for measuring particle speed and device thereof

Examples

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Embodiment 1

[0018]A linear electrostatic sensor array measurement method for particle velocity, taking two groups of first electrostatic sensor array 5 and second electrostatic sensor array 6 with the same structure and dimensions and insulating measurement pipeline 10, said first electrostatic sensor array 5 includes at least the first electrostatic sensor array 5 11 ring electrostatic sensors, the 12th ring electrostatic sensor, the 13th ring electrostatic sensor, the 14th ring electrostatic sensor, the 15th ring electrostatic sensor, the second electrostatic sensor array 6 includes at least the 21st ring electrostatic sensor, the 22nd ring electrostatic sensor , the 23rd annular electrostatic sensor, the 24th annular electrostatic sensor, the 25th annular electrostatic sensor, the 11th annular electrostatic sensor, the 12th annular electrostatic sensor, the 13th annular electrostatic sensor, the 14th annular electrostatic sensor, the 15th annular electrostatic sensor set Set in the insu...

Embodiment 2

[0020] A device for implementing a linear electrostatic sensor array measurement method for particle velocity, comprising: a measuring probe 1, a pre-charge differential amplifier circuit 2, a data acquisition card 3 and a computer 4, the output terminal of the pre-charge differential amplifier circuit 2 and the The input end of the data acquisition card 3 is connected, the output end of the data acquisition card 3 is connected with the input end of the computer 4, and the computer 4 performs spectrum analysis on the output signal of the data acquisition card 3 and determines the peak frequency on the spectrum, and then calculates and obtains the gas-solid Two-phase flow particle average velocity, the measuring probe 1 includes: an insulating measuring pipeline 10, a first electrostatic sensor array 5 and a second electrostatic sensor array 6 provided on the insulating measuring pipeline 10, and an insulating measuring pipeline 10, the first A metal shield 9 is provided outside...

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Abstract

The invention discloses a linear electrostatic sensor array method for measuring particle speed and a device thereof. The method comprises the following steps: a duct is axially provided with a first linear electrostatic sensor array and a second linear electrostatic sensor array which are composed of a plurality of ring electrodes; when charged particles pass through the two electrostatic sensorarrays, two sets of electrostatic signals, which reflect gas-solid flow information, are generated; after the electrostatic signals are accessed into a front charge differential circuit to be amplified, a data acquisition circuit sends the amplified signals into a computer; and the computer carries out spectral analysis on the differential electrostatic signal and determines the peak frequency onthe frequency spectrum, thereby obtaining the average speed of gas-solid two-phase flow particles. Compared with the single ring electrostatic induction spatial filter, the linear electrostatic sensor array has higher space selectivity, thereby enhancing the measurement accuracy of the particle speed. The device comprises a measuring probe, a front charge differential amplification circuit, a data acquisition card and a computer.

Description

technical field [0001] The invention belongs to the technical field of gas-solid two-phase flow measurement, and in particular relates to a linear electrostatic sensor array measurement method and device for gas-solid two-phase flow particle velocity. Background technique [0002] Gas-solid two-phase flow systems are widely used in energy, chemical, electric power and metallurgy industries. Particle velocity is an important parameter to describe the gas-solid two-phase flow system. The measurement of particle velocity is of great significance for understanding the characteristics of gas-solid flow and the measurement, energy saving and control of the production process. The collision, friction and separation of particles and particles, particles and gas, and particles and pipe walls in the gas-solid flow system lead to the charging phenomenon of particles. In recent years, people have used particle charging to research and develop electrostatic correlation method particle v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P5/08
Inventor 许传龙李健高鹤明付飞飞王式民
Owner SUZHOU HUAMAO ENERGY TECH
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