Measuring system and measuring method for particle flow parameters

Abstract

The invention discloses a measuring system and a measuring method for particle flow parameters. The measuring system comprises a sensor device, a detection circuit and a signal acquisition and processing module, wherein the detection circuit is used for extracting a detection signal output by means of the sensor device, the signal acquisition and processing module obtains the particle flow parameters according to the signal extracted by means of the detection circuit, and the sensor device comprises a detection casing pipe, two response electrodes and an excitation electrode; the detection casing pipe has an internal detection channel; the two response electrodes and the excitation electrode are axially arranged on the inner surface of the detection casing pipe along the detection sleeve at intervals, and are in direction contact with the detection channel; and an isolation unit used for electric isolation is arranged at an interval position between the response electrodes and the excitation electrode, and the isolating unit is arranged at the interval position of the response electrodes and the excitation electrode. The measuring system and the measuring method can prevent temperature drift and can improve the precision and reliability of speed measurement.

Description

technical field [0001] The invention relates to a measurement system and a measurement method for particle flow parameters. Background technique [0002] Gas-solid two-phase flow systems widely exist in energy, chemical, food, and metallurgy industries. With the development of modern industry, the requirements for the detection and control of industrial process parameters are getting higher and higher. Accurate measurement of gas-solid two-phase flow parameters has important practical significance for industrial process control and safe and efficient operation. [0003] The electrical measurement methods for solid particle flow parameters (velocity, concentration, mass flow rate) in gas-solid two-phase flow mainly include electrostatic method and capacitance method. The electrostatic method is a particle flow parameter measurement method developed by using the charging phenomenon of particles in gas-solid two-phase flow. By arranging electrostatic sensors on the particle fl...

AI Technical Summary

Problems solved by technology

In addition, the excitation electrode and response electrode of the traditional capacitive sensor measurement device are attached to the outside of the pipe made of insulating materials such as plexiglass tubes. When the temperature changes, the dielectric constant of the material will also change, resulting in Temperature drift problem, which affects the accurate measurement of particle concentration

Images