Gas-solid phase pipe flow static measuring appliance and measuring method

Abstract

The invention discloses to a gas-solid phase pipe flow static measuring appliance and a gas-solid phase pipe flow static measuring method, and relates to a pipe flow static measuring device. The gas-solid pipe flow static measuring device is provided with an internal shielding metal layer, a first insulating layer, a metal layer, a second insulating layer and an external fielding metal layer in sequence from inside to outside. The internal shielding metal layer is provided with an electrode, and is grounded, the metal layer is provided with a measuring electrode, the measuring electrode is externally connected with a static measuring instrument, and the external shielding metal layer is grounded. A pipeline to be measured is inserted into the internal shielding metal layer, and the internal shielding metal layer is tightly attached to the outer wall of the pipeline to be measured. A computer and the static measuring instrument are started, a program window for controlling the static measuring instrument in the computer is started, and a data recording program of the static measuring instrument is started. When the gas-solid phase pipe flow static measuring appliance is started, particles move in the pipeline to be measured by pneumatic transmission, and static generated when the particles impact the wall surface of the pipeline is measured. After the measurement, the gas-solid phase pipe flow static measuring appliance is turned off, the pneumatic transmission is stopped, and a measurement controlling window of the computer is closed, and the static measuring instrument is turned off to accomplish the measuring process.

Description

technical field [0001] The invention relates to a pipe flow electrostatic measuring device, in particular to a gas-solid two-phase pipe flow electrostatic measuring device and a measuring method. Background technique [0002] Static electricity widely exists in nature and daily life. In actual industrial production, a large number of electrostatic phenomena also exist, directly affecting normal work, and even bringing danger and accidents. For example, in gas-solid two-phase pipeline transportation, non-metallic insulating materials have the advantages of corrosion resistance, long life, and cleanliness, and are widely used in food, chemical, pharmaceutical, energy and other fields. Due to the difference between the particles and the tube wall material, static electricity will be generated after the particles collide with the tube wall. Because the pipe material is non-metallic, electrostatic charge will accumulate on the pipe wall during the continuous collision between t...

AI Technical Summary

Problems solved by technology

Due to the particularity of electrostatic induction and the weakness of the signal (10e-7), the above factors make it very difficult to accurately measure the local static electricity of the pipeline

At present, there are many static measurement methods, but the influence of the external environment and surrounding factors on the measurement accuracy of static electricity is often ignored.

Since the measured electrostatic signal is very low, the measurement results are easily disturbed

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